1. The utility model provides a part mills anchor clamps in batches for a plurality of parts of centre gripping are for processing, its characterized in that: the part batch milling fixture comprises a fixing plate body and a pair of tool setting pieces arranged on the fixing plate body, wherein a tool setting groove for placing the pair of tool setting pieces and a plurality of part placing holes which are arranged in an array mode by taking a central shaft of the tool setting groove as an axis are formed in the fixing plate body, and the pair of tool setting pieces are arranged in the tool setting groove.

2. The batch milling fixture of parts according to claim 1, wherein: the pair of tool setting pieces are provided with fixing screw holes, and the pair of tool setting pieces penetrate through the fixing screws, and the fixing screw holes are detachably connected with the fixing plate body.

3. The batch milling fixture of parts according to claim 1, wherein: the part batch milling fixture further comprises a supporting plate arranged on one side, away from the tool aligning groove, of the fixing plate body, and the supporting plate is fixedly connected with the fixing plate body through a supporting screw.

4. The batch milling fixture of parts according to claim 3, wherein: the part includes the cylinder and certainly the spacing portion of the one end of cylinder is along the protruding stretching of radial outside, the fixed plate body still includes the orientation the spacing groove of backup pad one side, the spacing groove certainly part mounting hole is along radial outside extension, the size of spacing portion is greater than the size in part mounting hole is less than the size of spacing groove, the height of spacing portion with the height of spacing groove is equal, the part sets up during part mounting hole, spacing portion sets up the spacing inslot.

5. The batch milling fixture of parts according to claim 4, wherein: the part batch milling fixture further comprises a part screw passing through the support plate to be fixed with the part.

6. A milling method characterized by: the milling method comprises the following steps:

s1: providing the part batch milling fixture of any one of claims 1-5, placing the part in the part seating hole, disposing a pair of cutters in the pair of cutter pockets;

s2: providing a numerical control machine tool, fixing the part batch milling fixture on the numerical control machine tool, and performing batch roughing on the parts on the part batch milling fixture by using the numerical control machine tool;

s3: the part batch milling fixture and the parts are taken down and installed on a precision milling machine;

s4: installing a first ball-end milling cutter on a precision milling machine, obtaining position parameters of the first ball-end milling cutter by using a tool setting piece, performing trial cutting, obtaining deviation of the first ball-end milling cutter in the plane direction, correcting, and removing the tool setting piece on the part batch milling fixture;

s5: roughing by using a first ball end mill;

s6: removing the first ball milling cutter, mounting a second ball milling cutter on the precision milling machine, mounting a tool setting piece on the part batch milling fixture, obtaining the position parameter of the second ball milling cutter by using the tool setting piece, performing trial cutting, obtaining and correcting the deviation of the second ball milling cutter in the plane direction, and removing the tool setting piece;

s7: and performing finish machining by using a second ball-end milling cutter to finish machining, and removing the part batch milling fixture and the parts.

7. The milling method according to claim 6, characterized in that: the precision milling machine has a spindle for clamping the first ball end mill and the second ball end mill, and further includes a step S31 between steps S3 and S4: the coaxiality of the main shaft is adjusted to be 1um, and the dynamic balance is adjusted to be 2 nm.

8. The milling method according to claim 6, characterized in that: and before trial cutting in the steps S4 and S6, controlling the first ball end mill or the second ball end mill to move downwards by 0.015 mm.

9. The milling method according to claim 6, characterized in that: in step S2, the margin of the single side is opened to be 0.1 mm.

10. The milling method according to claim 6, characterized in that: in step S5, the margin of the single side is opened to be 0.003 mm.

Background

With the improvement of the requirements of aerospace and other national defense and civil fields on the surface finish of products, students at home and abroad pay more and more attention to the single-point diamond milling technology. Single-point diamond milling belongs to horizontal triaxial processing, and a workpiece is fixed on a rotating shaft sucker, and the alignment needs to make the excircle and the flat position of a clamp. The single piece production can not meet the requirements of large-batch production and the consistency of the whole batch piece processing, so the design and process formulation of batch production tools are urgent.

For batch processing, when two or more cutters are used, only the traditional optical camera tool setting method is adopted, the two cutters have deviation, and the deviation cannot be completely removed in the final cutter finishing. The rough machining and the finish machining of the part are carried out on different machine tools, and how to design the tool clamp reduces the clamping error twice. The problems in the two aspects are not effectively solved in the actual production process, so that the processing efficiency is low, and the production cost is increased.

In view of the above, there is a need for an improved fixture for batch milling of parts to solve the above problems.

Disclosure of Invention

The invention aims to provide a part batch milling clamp to solve the problem that deviation exists in the existing batch processing of a plurality of cutters.

In order to achieve the purpose, the invention provides a part batch milling fixture which is used for clamping a plurality of parts for processing, and the part batch milling fixture comprises a fixed plate body and a tool setting member arranged on the fixed plate body, wherein a tool setting groove used for placing the tool setting member and a plurality of part placing holes which are arranged in an array mode by taking a central shaft of the tool setting groove as an axis are formed in the fixed plate body, and the tool setting member is arranged in the tool setting groove.

As a further improvement of the invention, a fixing screw hole is arranged on the pair of the cutters, and the pair of the cutters passes through the fixing screw hole through a fixing screw to be detachably connected with the fixing plate body.

As a further improvement of the invention, the part batch milling fixture further comprises a support plate arranged on one side of the fixing plate body far away from the tool aligning groove, and the support plate is fixedly connected with the fixing plate body through a support screw.

As a further improvement of the present invention, the component includes a column body and a limiting portion protruding outward from one end of the column body in a radial direction, the fixing plate further includes a limiting groove facing one side of the supporting plate, the limiting groove extends outward from the component placement hole in the radial direction, a size of the limiting portion is larger than a size of the component placement hole and smaller than the limiting groove, a height of the limiting portion is equal to a height of the limiting groove, and when the component is disposed in the component placement hole, the limiting portion is disposed in the limiting groove.

As a further improvement of the invention, the part batch milling fixture further comprises a part screw passing through the support plate to be fixed with the part.

The invention also provides a milling method, which comprises the following steps:

s1: providing the part batch milling fixture, placing the part in the part mounting hole, and arranging the pair of cutters in the pair of cutter grooves;

s2: providing a numerical control machine tool, fixing the part batch milling fixture on the numerical control machine tool, and performing batch roughing on the parts on the part batch milling fixture by using the numerical control machine tool;

s3: the part batch milling fixture and the parts are taken down and installed on a precision milling machine;

s4: installing a first ball-end milling cutter on a precision milling machine, obtaining position parameters of the first ball-end milling cutter by using a tool setting piece, performing trial cutting, obtaining deviation of the first ball-end milling cutter in the plane direction, correcting, and removing the tool setting piece on the part batch milling fixture;

s5: roughing by using a first ball end mill;

s6: removing the first ball milling cutter, mounting a second ball milling cutter on the precision milling machine, mounting a tool setting piece on the part batch milling fixture, obtaining the position parameter of the second ball milling cutter by using the tool setting piece, performing trial cutting, obtaining and correcting the deviation of the second ball milling cutter in the plane direction, and removing the tool setting piece;

s7: and performing finish machining by using a second ball-end milling cutter to finish machining, and removing the part batch milling fixture and the parts.

As a further improvement of the present invention, the precision milling machine has a spindle for holding the first ball nose mill and the second ball nose mill, and further includes, between steps S3 and S4, step S31: the coaxiality of the main shaft is adjusted to be 1um, and the dynamic balance is adjusted to be 2 nm.

As a further improvement of the present invention, before trial cutting in steps S4 and S6, the first ball nose mill or the second ball nose mill is controlled to move downward by 0.015 mm.

As a further improvement of the invention, in step S2, the margin of one side is opened to be 0.1 mm.

As a further improvement of the invention, in step S5, the margin of single side is opened to be 0.003 mm.

The invention has the beneficial effects that: according to the part batch milling fixture, a plurality of part placing holes are formed, so that a plurality of parts can be simultaneously machined; through setting up the tool setting piece to can guarantee the unity of many times processing benchmark, different cutter zero point coincidence has guaranteed the uniformity of part.

Drawings

FIG. 1 is a schematic structural diagram of a batch milling fixture for parts according to the present invention;

FIG. 2 is a schematic structural diagram of a fixing plate body of the batch milling fixture for parts according to the present invention;

FIG. 3 is a schematic view of a part machined by the batch milling fixture of parts according to the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the batch milling fixture 100 for parts of the present invention is used for clamping a plurality of parts 200 for machining. In this embodiment, the component 200 is an optical component 200.

The part 200 comprises a cylinder 201 and a limiting part 202 protruding outwards from one end of the cylinder 201 in the radial direction, and the milling method of the invention mainly processes one end of the part 200 far away from the limiting part 202.

The part batch milling fixture 100 comprises a fixed plate body 1, a pair of cutters 2 arranged on the fixed plate body 1, a support plate 3 arranged on one side of the fixed plate body 1, and a part screw 4.

The fixed plate body 1 is provided with a tool setting groove 11 for placing a tool setting element 2, a plurality of part placing holes 12 which are arranged in an array mode by taking a central shaft of the tool setting groove 11 as an axis, and a limiting groove 13 facing one side of the supporting plate 3.

The pair of blades 2 are disposed in the pair of knife grooves 11. Be equipped with set screw hole 21 on to cutter 2, pass through set screw 22 to cutter 2 set screw hole 21 with the connection can be dismantled to fixed plate body 1. The tool setting piece 2 is used for correcting the positions of the two milling cutters. In this embodiment, the cross sections of the pair of knife grooves 11 and the pair of knife elements 2 are both circular to ensure the centrality.

The supporting plate 3 is disposed on one side of the fixing plate body 1 far away from the tool aligning groove 11, and the supporting plate 3 is fixedly connected with the fixing plate body 1 through a supporting screw 31.

The limiting groove 13 extends outwards from the part placing hole 12 in the radial direction, the size of the limiting part 202 is larger than that of the part placing hole 12 and smaller than that of the limiting groove 13, and the height of the limiting part 202 is equal to that of the limiting groove 13.

When the part 200 is arranged in the part arranging hole 12, the limiting part 202 is arranged in the limiting groove 13, the column 201 penetrates through the part arranging hole 12, and the column 201 is the same as the part arranging hole 12 in shape and size so as to limit the displacement of the part 200 in the horizontal direction.

The part screw 4 passes through the support plate 3 to be fixed with the part 200.

The mounting mode of the part 200 is as follows: the column 201 of the part 200 is put into the part placing hole 12 from one side with the limiting groove 13, the supporting plate 3 is fixed with the fixing plate body 1 by the supporting screw 31, the part 200 is fixed by the part screw 4, and the tool setting part 2 is fixed in the tool setting groove 11 by the fixing screw 22.

A milling method, comprising the steps of:

s1: providing the part batch milling fixture 100 as described above, placing the part 200 in the part placing hole 12, and placing the tool setting member 2 in the tool setting groove 11;

s2: providing a numerical control machine tool, fixing the part batch milling fixture 100 on the numerical control machine tool, and using the numerical control machine tool to perform batch roughing on the parts 200 on the part batch milling fixture 100, wherein the roughing single-side margin is 0.1 mm;

s3: the part batch milling fixture 100 and the parts 200 are taken down and mounted on a precision milling machine; the precision milling machine is provided with a main shaft;

s31: adjusting the coaxiality of a main shaft to be 1um, and dynamically balancing to be 2 nm;

s4: installing a first ball end mill on a precision milling machine, obtaining position parameters of the first ball end mill by using the cutter setting piece 2, performing trial cutting, obtaining deviation of the first ball end mill in the plane direction, correcting, and removing the cutter setting piece 2 on the part batch milling fixture 100;

s5: performing roughing by using a first ball-end milling cutter, wherein the single-side margin of the roughing is 0.003 mm;

s6: dismantling the first ball milling cutter, installing a second ball milling cutter on a precision milling machine, installing a cutter setting piece 2 on the part batch milling fixture 100, obtaining a position parameter of the second ball milling cutter by using the cutter setting piece 2, performing trial cutting, obtaining and correcting the deviation of the second ball milling cutter in the plane direction, and dismantling the cutter setting piece 2;

s7: and (5) performing finish machining by using a second ball-end milling cutter, finishing machining, and removing the part batch milling fixture 100 and the parts 200.

The main shaft is used for clamping the first ball end mill and the second ball end mill.

Setting the plane direction to comprise the X direction and the Y direction, and controlling the first ball head milling cutter or the second ball head milling cutter to move downwards by 0.015mm because the residual shape of the first ball head milling cutter or the second ball head milling cutter in the Y direction is always a cone before trial cutting in the steps S4 and S6.

According to the part batch milling fixture 100, a plurality of part placing holes 12 are formed, so that a plurality of parts 200 can be machined at the same time; by arranging the cutter 2, the unification of multiple processing references can be ensured, zero points of different cutters are overlapped, and the consistency of the parts 200 is ensured. The milling method greatly reduces the roughing time and improves the processing efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.