1. A tool wear monitoring tool for turning of an excircle of a roller is characterized by comprising a base, a sliding groove, a sliding block, a supporting plate, a pair of electronic dial indicators, a control module and an alarm, wherein the base is used for being connected with a tool rest of a lathe, the sliding groove is arranged on the base and is perpendicular to the direction of a rotation axis of the lathe, the sliding block is arranged on the sliding groove in a sliding mode, the supporting plate is arranged at the front end of the sliding block, the pair of electronic dial indicators are arranged on the supporting plate and are provided with data interfaces, the control module is connected with the pair of electronic dial indicators, the alarm is connected with the control module, the pair of electronic dial indicators are arranged on the supporting plate at intervals along the direction parallel to the rotation axis of the lathe, chip-proof protective housings are arranged on the supporting plate and are arranged on the peripheries of the pair of electronic dial indicators, each chip-proof protective housing comprises an upper chip-proof protective housing connected with the upper end face of the supporting plate and a lower chip-proof protective housing connected with the lower end face of the supporting plate, the upper chip-preventing protective shell covers dial parts of the pair of electronic dial indicators, the lower chip-preventing protective shell is a flexible sheath surrounding measuring head parts of the pair of electronic dial indicators, and the opening part of the flexible sheath is in flexible contact with the outer circle of the roller.

2. The tool for monitoring the wear of the turning tool for the outer circle of the roller according to claim 1, wherein a pair of permanent magnet plates are respectively arranged at two sides of the bottom of the sliding groove, and the sliding block is slidably arranged in the sliding groove and fixed by the magnetic attraction of the permanent magnet plates.

3. The tool wear monitoring tool for turning the outer circle of the roller as claimed in claim 2, wherein a connecting screw hole is formed in the middle of the bottom of the sliding groove, a waist-shaped hole is formed in the sliding block, and the sliding block is further fixed through a butterfly bolt which penetrates through the waist-shaped hole and is connected with the connecting screw hole.

4. The tool wear monitoring tool for turning the outer circle of the roller according to claim 1, wherein the support plate is positioned obliquely above one side of the outer circle of the roller, which is close to the tool rest; the utility model discloses a dustproof cover plate, including backup pad, last anti-dust protective housing activity suit, backup pad up end is provided with the location buckle, go up anti-dust protective housing activity suit in on the location buckle.

5. The tool wear monitoring tool for turning the outer circle of the roller according to claim 1, wherein the upper chip-preventing protective shell is made of a transparent material.

6. The tool for monitoring the wear of the turning tool for the outer circle of the roller according to claim 1, wherein a mounting plate is connected to the base, and the control module is arranged on the mounting plate; the control module is provided with a display device for displaying the reading difference value of the pair of electronic dial indicators; the control module is an MCU controller or a PLC controller.

7. The tool wear monitoring tool for the turning of the outer circle of the roller according to claim 1, wherein a support and a compressed air cleaning nozzle connected to the support are further arranged on the tool rest, an inner hole at the outlet end of the compressed air cleaning nozzle is a rectangular flat nozzle hole, the outlet end of the compressed air cleaning nozzle faces the outer circle direction of the roller, the end part at the outlet end of the compressed air cleaning nozzle is an arc-shaped end part matched with the outer circle of the roller, and the compressed air cleaning nozzle is connected with a compressed air source through a pipeline; the compressed air cleaning nozzle is axially positioned between the turning tool and the supporting plate.

8. The monitoring method for the abnormal wear monitoring tool of the roll excircle turning tool according to any one of claims 1 to 7 is characterized by comprising the following steps:

s0, installation and correction of the monitoring tool: mounting the monitoring tool on a tool rest of a horizontal lathe, and performing zero correction on a pair of electronic dial indicators of the monitoring tool on the lathe by using a standard mandrel;

s1, workpiece installation: clamping the roller on a horizontal lathe;

s2, lathe tool, compressed air cleaning nozzle and monitoring tool setting: a turning tool and a compressed air cleaning nozzle are respectively arranged on a tool rest of the lathe; adjusting the position of a sliding block on the monitoring tool to enable a flexible sheath on the monitoring tool to be far away from the excircle of the roller;

s3, turning: turning the outer circle of the roller by starting a lathe, and then cleaning the turned outer circle by starting a compressed air cleaning nozzle;

s4, adjusting a monitoring tool: after a section of outer circle of the roller is machined, a power supply of a monitoring tool is started under the condition that turning is not stopped, a sliding block on the monitoring tool is moved forward, so that an opening part of a flexible sheath on the monitoring tool is in flexible contact with the outer circle of the roller, a measuring head of a pair of electronic dial indicators is in contact with the outer circle of the roller, and then the sliding block is fixed by a butterfly bolt;

s5, abnormal wear monitoring of the cutter: pressing a monitoring button on a control module of the monitoring tool, dynamically acquiring readings of a pair of electronic dial indicators in real time by the control module in a subsequent turning process, and calculating the difference of the readings of the pair of electronic dial indicators; when the reading difference of the pair of electronic dial indicators is in a preset range, the fact that the cutter is not normally worn is indicated, and the turning can be continued; when the reading difference of the pair of electronic dial indicators exceeds a preset range, the abnormal abrasion of the cutter is indicated, and the control module gives an alarm through the alarm to remind a lathe operator to process.

9. The monitoring method for the tool wear monitoring tool for the cylindrical turning of the roller as claimed in claim 8, wherein the monitoring tool calibration method of step S0 is as follows: clamping a standard mandrel on a horizontal lathe, mounting a dial indicator on a lathe tool rest position, enabling a measuring head of the dial indicator to be in contact with an excircle of the standard mandrel, and adjusting the position of the standard mandrel to enable readings of the dial indicator to be consistent when the lathe tool rest axially feeds; and then removing the dial indicator, starting a power supply of the monitoring tool, and adjusting the transverse position of the lathe tool rest to enable the measuring heads of the pair of electronic dial indicators to be in contact with the standard mandrel, detect whether the readings of the pair of electronic dial indicators are the same or not, and enable the readings of the pair of electronic dial indicators to be the same by adjusting the position of the base.

Background

The roll is the core part of the rolling machinery, and the quality diameter of the roll influences the performance of the rolling machinery.

When the roller is turned, the axial length of the roller is long, the hardness of the roller surface is high, and certain cutter abrasion is inevitable during continuous turning, so that the cutter abrasion can generate great influence on the processing size of the excircle of the roller. Particularly, when the tool is abnormally worn due to a large amount of wear during long-time machining, the machining condition may be deteriorated, and the machining quality of the roll may be seriously affected.

However, the prior art lacks an effective monitoring means for abnormal wear of the tool during roll machining, and the operator generally determines the abnormal wear based on experience, and once the abnormal wear is found, the abnormal wear is late.

Therefore, there is a need to improve the existing roll processing technology and find the abnormal wear amount of the cutter during roll processing in time, so as to ensure the quality of roll processing.

Disclosure of Invention

In order to solve the problems, the invention provides a tool wear monitoring tool and a monitoring method for turning the outer circle of a roller, aiming at realizing automatic monitoring of tool wear during turning the outer circle of the roller and ensuring the quality of roller processing. The specific technical scheme is as follows:

a tool wear monitoring tool for turning of an excircle of a roller comprises a base, a sliding groove, a sliding block, a supporting plate, a pair of electronic dial indicators, a control module and an alarm, wherein the base is used for being connected with a tool rest of a lathe, the sliding groove is arranged on the base and is perpendicular to the direction of a rotation axis of the lathe, the sliding block is arranged on the sliding groove in a sliding mode, the supporting plate is arranged at the front end of the sliding block, the pair of electronic dial indicators are arranged on the supporting plate and are provided with data interfaces, the control module is connected with the pair of electronic dial indicators, the alarm is connected with the control module, the pair of electronic dial indicators are arranged on the supporting plate at intervals along the direction parallel to the direction of the rotation axis of the lathe, chip-proof protective housings are arranged on the supporting plate and are positioned on the peripheries of the pair of electronic dial indicators, each chip-proof protective housing comprises an upper chip-proof protective housing and a lower chip-proof protective housing, the upper chip-proof protective housing covers a dial part of the pair of electronic dial indicators, the lower chip-proof protective shell is a flexible sheath surrounding the measuring head parts of the pair of electronic dial indicators, and the opening part of the flexible sheath is in flexible contact with the excircle of the roller.

As a further improvement of the invention, a pair of permanent magnet plates are respectively arranged at two sides of the bottom of the sliding groove, and the sliding block is arranged in the sliding groove in a sliding manner and is fixed by the magnetic attraction of the permanent magnet plates.

Preferably, the permanent magnet plate is fixed at two sides of the groove bottom of the sliding groove by screws.

As a further improvement of the invention, a connecting screw hole is arranged at the middle position of the bottom of the sliding groove, a waist-shaped hole is arranged on the sliding block, and the sliding block is fixed by a butterfly bolt which passes through the waist-shaped hole and is connected with the connecting screw hole.

Preferably, the supporting plate is positioned at the oblique upper position of the outer circle of the roller close to one side of the tool rest; the utility model discloses a dustproof cover plate, including backup pad, last anti-dust protective housing activity suit, backup pad up end is provided with the location buckle, go up anti-dust protective housing activity suit in on the location buckle. The location buckle is the location buckle of dismantling fast.

Preferably, the support plate is integrally connected to the slider.

Preferably, the upper anti-scrap protective shell is made of a transparent material.

In the invention, the base is connected with an installation plate, and the control module is arranged on the installation plate; the control module is provided with a display device for displaying the reading difference value of the pair of electronic dial indicators; the control module is an MCU controller or a PLC controller.

Preferably, the mounting plate is bolted to the base.

In the invention, the turning tool and the base for turning the excircle of the roller are respectively arranged on two sides of the tool rest. The lathe tool is positioned on the tool rest and close to one side of a headstock of the lathe, and the base is positioned on the tool rest and far away from one side of the headstock of the lathe.

In order to prevent the influence of the excircle pollution of the roller on the monitoring precision, the further improvement scheme is as follows: the tool rest is also provided with a support and a compressed air cleaning nozzle connected to the support, an inner hole at the outlet end of the compressed air cleaning nozzle is a rectangular flat nozzle hole, the outlet end of the compressed air cleaning nozzle faces the outer circle direction of the roller, the end part of the outlet end of the compressed air cleaning nozzle is an arc-shaped end part matched with the outer circle of the roller, and the compressed air cleaning nozzle is connected with a compressed air source through a pipeline; the compressed air cleaning nozzle is axially positioned between the turning tool and the supporting plate.

A monitoring method for a tool wear monitoring tool for turning of an outer circle of a roller comprises the following steps:

s0, installation and correction of the monitoring tool: mounting the monitoring tool on a tool rest of a horizontal lathe, and performing zero correction on a pair of electronic dial indicators of the monitoring tool on the lathe by using a standard mandrel;

s1, workpiece installation: clamping the roller on a horizontal lathe;

s2, lathe tool, compressed air cleaning nozzle and monitoring tool setting: a turning tool and a compressed air cleaning nozzle are respectively arranged on a tool rest of the lathe; adjusting the position of a sliding block on the monitoring tool to enable a flexible sheath on the monitoring tool to be far away from the excircle of the roller;

s3, turning: turning the outer circle of the roller by starting a lathe, and then cleaning the turned outer circle by starting a compressed air cleaning nozzle;

s4, adjusting a monitoring tool: after a section of outer circle of the roller is machined, a power supply of a monitoring tool is started under the condition that turning is not stopped, a sliding block on the monitoring tool is moved forward, so that an opening part of a flexible sheath on the monitoring tool is in flexible contact with the outer circle of the roller, a measuring head of a pair of electronic dial indicators is in contact with the outer circle of the roller, and then the sliding block is fixed by a butterfly bolt;

s5, abnormal wear monitoring of the cutter: pressing a monitoring button on a control module of the monitoring tool, dynamically acquiring readings of a pair of electronic dial indicators in real time by the control module in a subsequent turning process, and calculating the difference of the readings of the pair of electronic dial indicators; when the reading difference of the pair of electronic dial indicators is in a preset range, the fact that the cutter is not normally worn is indicated, and the turning can be continued; when the reading difference of the pair of electronic dial indicators exceeds a preset range, the abnormal abrasion of the cutter is indicated, and the control module gives an alarm through the alarm to remind a lathe operator to process.

As a preferable scheme of the monitoring tool calibration method in the present invention, the monitoring tool calibration method in step S0 is as follows: clamping a standard mandrel on a horizontal lathe, mounting a dial indicator on a lathe tool rest position, enabling a measuring head of the dial indicator to be in contact with an excircle of the standard mandrel, and adjusting the position of the standard mandrel to enable readings of the dial indicator to be consistent when the lathe tool rest axially feeds; and then removing the dial indicator, starting a power supply of the monitoring tool, and adjusting the transverse position of the lathe tool rest to enable the measuring heads of the pair of electronic dial indicators to be in contact with the standard mandrel, detect whether the readings of the pair of electronic dial indicators are the same or not, and enable the readings of the pair of electronic dial indicators to be the same by adjusting the position of the base.

As another preferred embodiment of the method for correcting the monitoring tool, after the roller is mounted on the horizontal lathe, a section of outer circle is pre-run (a certain machining allowance is still reserved for the section of outer circle after the trial run), the size of the section of outer circle after the trial run is measured by an outside micrometer, and after the outer circle meets the precision requirement, the section of outer circle after the trial run is used for replacing a standard mandrel to correct the zero position of the pair of electronic dial indicators on the monitoring tool. And after the monitoring tool is corrected, the tool can be immediately put into tool abrasion detection of subsequent formal machining. The monitoring tool correcting method can also ensure the correcting precision and save a large amount of time for clamping and correcting the standard mandrel.

The invention has the beneficial effects that:

firstly, the tool for monitoring the abrasion of the cutter for turning the outer circle of the roller and the monitoring method thereof are characterized in that a pair of electronic dial indicators (digital display dial indicators with data interfaces) connected with a control module are arranged in a chip-proof protective shell, when the control module monitors whether the cutter is abnormally abraded or not through the difference of the readings of the pair of electronic dial indicators, an alarm is sent to remind an operator to timely treat the cutter (for example, timely replace a blade) if necessary, and therefore the occurrence of processing quality accidents can be avoided.

Secondly, the tool for monitoring the abrasion of the turning tool for the outer circle of the roller and the monitoring method have the advantages of simple overall structure, convenience in installation and good universality.

Secondly, according to the tool wear monitoring tool and the monitoring method for the turning machining of the outer circle of the roller, the anti-scrap protective shell is arranged on the periphery of the pair of electronic dial indicators, so that the influence of scrap iron splashing is prevented, and on the other hand, due to the fact that the lower anti-scrap protective shell is a flexible sheath in flexible contact with the outer circle of the roller, dirt can be prevented from entering the anti-scrap protective shell, and therefore the measuring accuracy of the pair of electronic dial indicators is guaranteed.

Thirdly, according to the tool wear monitoring tool and the monitoring method for the turning machining of the outer circle of the roller, double antifouling is achieved through the cooperation of the compressed air cleaning nozzle and the anti-chip protective shell.

Drawings

FIG. 1 is a schematic structural diagram of a tool wear monitoring tool for turning the outer circle of a roller according to the invention;

fig. 2 is a left side view of fig. 1.

In the figure: 1. the device comprises a knife rest, 2, a base, 3, a rotation axis, 4, a sliding groove, 5, a sliding block, 6, a supporting plate, 7, an electronic dial indicator, 8, a control module, 9, an alarm, 10, a chip-proof protective shell, 11, an upper chip-proof protective shell, 12, a lower chip-proof protective shell (a flexible sheath), 13, a permanent magnet plate, 14, a waist-shaped hole, 15, a butterfly bolt, 16, a positioning buckle, 17, a mounting plate, 18, a display device, 19, a roller, 20, a turning tool, 21, a support, 22 and a compressed air cleaning nozzle.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1:

fig. 1 to 2 show an embodiment of a wear monitoring tool for a roller excircle turning tool according to the present invention, which includes a base 2 connected to a tool rest 1 of a lathe, a sliding groove 4 disposed on the base 2 and perpendicular to a direction of a rotation axis 3 of the lathe, a sliding block 5 slidably disposed on the sliding groove 4, a supporting plate 6 disposed at a front end of the sliding block 5, a pair of electronic dial indicators 7 with data interfaces disposed on the supporting plate 6, a control module 8 connected to the pair of electronic dial indicators 7, and an alarm 9 connected to the control module 8, wherein the pair of electronic dial indicators 7 are disposed on the supporting plate 6 at intervals along a direction parallel to the rotation axis 3 of the lathe, a peripheral anti-chip protective case 10 is disposed on the supporting plate 6 and located on the pair of electronic dial indicators 7, and the anti-chip protective case 10 includes an upper anti-chip protective case 11 connected to an upper end surface of the supporting plate 6 and a lower end surface connected to a lower end surface of the supporting plate 6 The upper chip-preventing protective shell 11 covers the dial plate parts of the pair of electronic dial indicators 7, the lower chip-preventing protective shell 12 is a flexible sheath 12 which surrounds the measuring head parts of the pair of electronic dial indicators 7, and the opening part of the flexible sheath 12 is in flexible contact with the excircle of the roller 19.

As a further improvement of this embodiment, a pair of permanent magnet plates 13 are respectively disposed at two sides of the bottom of the chute 4, and the slider 5 is slidably disposed in the chute 4 and fixed by the magnetic attraction of the permanent magnet plates 13.

Preferably, the permanent magnet plate 13 is fixed to both sides of the bottom of the chute 4 by screws.

As a further improvement of this embodiment, a connecting screw hole is provided at the middle position of the bottom of the sliding groove 4, a waist-shaped hole 14 is provided on the sliding block 5, and the sliding block 4 is further fixed by a butterfly bolt 15 which passes through the waist-shaped hole 14 and is connected with the connecting screw hole.

Preferably, the support plate 6 is positioned at an obliquely upper position of the outer circle of the roller 19 close to one side of the tool rest 1; 6 up end of backup pad is provided with location buckle 6, go up 11 movable suit of antidandruff protective housing in location buckle 6 is last. The positioning buckle 6 is a quick detachable positioning buckle.

Preferably, the support plate 6 is integrally connected to the slider 5.

Preferably, the upper anti-scrap protective shell 11 is made of a transparent material.

In this embodiment, the base 2 is connected to an installation plate 17, and the control module 8 is disposed on the installation plate 17; the control module 8 is provided with a display device 18 for displaying the reading difference value of the pair of electronic dial indicators 7; the control module 8 is an MCU controller or a PLC controller.

Preferably, the mounting plate 17 is bolted to the base 2.

In this embodiment, the turning tool 20 for turning the outer circle of the roller 19 and the base 2 are respectively disposed on two sides of the tool rest 1. The turning tool 20 is positioned on the tool rest 1 on the side close to the headstock of the lathe, and the base 2 is positioned on the tool rest 1 on the side away from the headstock of the lathe.

In order to prevent the monitoring precision from being influenced by the outer circle pollution of the roller 19, the further improvement scheme is as follows: the tool rest 1 is further provided with a support 21 and a compressed air cleaning nozzle 22 connected to the support 21, an inner hole of an outlet end of the compressed air cleaning nozzle 22 is a rectangular flat nozzle hole, an outlet end of the compressed air cleaning nozzle 22 faces the outer circle direction of the roller 19, an end part of the outlet end of the compressed air cleaning nozzle 22 is an arc-shaped outlet end part matched with the outer circle of the roller 19, and the compressed air cleaning nozzle 22 is connected with a compressed air source through a pipeline; the compressed air cleaning nozzle 22 is located axially between the turning tool 20 and the support plate 6.

Example 2:

a monitoring method for monitoring the wear of a tool for turning the outer circle of a roller in embodiment 1 comprises the following steps:

s0, installation and correction of the monitoring tool: mounting the monitoring tool on a tool rest 1 of a horizontal lathe, and performing zero correction on a pair of electronic dial indicators 7 of the monitoring tool on the lathe by using a standard mandrel;

s1, workpiece installation: clamping the roller 19 on a horizontal lathe;

s2, lathe tool, compressed air cleaning nozzle and monitoring tool setting: a turning tool 20 and a compressed air cleaning nozzle 22 are respectively arranged on a tool rest 1 of the lathe; adjusting the position of the sliding block 5 on the monitoring tool to enable the flexible sheath 12 on the monitoring tool to be far away from the excircle of the roller 19;

s3, turning: turning the outer circle of the roller 19 by starting a lathe, and then cleaning the turned outer circle by starting a compressed air cleaning nozzle 22;

s4, adjusting a monitoring tool: after a section of outer circle of the roller 19 is machined, a power supply of a monitoring tool is started under the condition that turning is not stopped, a sliding block 5 on the monitoring tool is moved forwards, so that an opening part of a flexible sheath 12 on the monitoring tool is in flexible contact with the outer circle of the roller 19, a measuring head of a pair of electronic dial indicators 7 is in contact with the outer circle of the roller 19, and then the sliding block is fixed by a butterfly bolt 15;

s5, abnormal wear monitoring of the cutter: pressing a monitoring button on a control module 8 of the monitoring tool, dynamically acquiring readings of a pair of electronic dial indicators 7 by the control module 8 in real time in a subsequent turning process, and calculating the reading difference of the pair of electronic dial indicators 7; when the reading difference of the pair of electronic dial indicators 7 is in a preset range, the abnormal abrasion of the cutter is not generated, and the turning can be continued; when the difference between the readings of the pair of electronic dial indicators 7 exceeds a preset range, the abnormal wear of the tool is indicated, and the control module 8 gives an alarm through the alarm 9 to remind a lathe operator to process the tool.

As a preferable scheme of the monitoring tool calibration method in this embodiment, the monitoring tool calibration method in step S0 is as follows: clamping a standard mandrel on a horizontal lathe, mounting a dial indicator on a lathe tool rest 1, enabling a measuring head of the dial indicator to be in contact with the excircle of the standard mandrel, and adjusting the position of the standard mandrel to enable the readings of the dial indicator to be consistent when the lathe tool rest axially feeds; then the dial indicator is removed, a power supply of the monitoring tool is started, the transverse position of the lathe tool rest is adjusted, the measuring heads of the pair of electronic dial indicators 7 are made to be in contact with the standard mandrel, whether the readings of the pair of electronic dial indicators 7 are the same or not is detected, and the readings of the pair of electronic dial indicators 7 are made to be the same by adjusting the position of the base 2.

As another preferred embodiment of the method for calibrating the monitoring tool in this embodiment, after the roll 19 is mounted on the horizontal lathe, a trial run is performed on a section of outer circle (the section of outer circle subjected to trial run still retains a certain machining allowance after the trial run), the size of the section of outer circle subjected to trial run is measured by using an outside micrometer, and after the outer circle meets the precision requirement, the section of outer circle subjected to trial run is used to replace a standard mandrel to calibrate the zero position of the pair of electronic dial indicators 7 on the monitoring tool. And after the monitoring tool is corrected, the tool can be immediately put into tool abrasion detection of subsequent formal machining. The monitoring tool correcting method can also ensure the correcting precision and save a large amount of time for clamping and correcting the standard mandrel.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.