1. The utility model provides a car mould device of operation motor housing for wire rope electric block, includes location dabber and the position sleeve that has the through-hole, its characterized in that:

the positioning sleeve is integrally formed by a connecting flange part, a sleeve body part and an expansion sleeve part axially extending from the sleeve body part, wherein a positioning journal for positioning and mounting on a main shaft of a lathe is axially formed on the outer side wall of the connecting flange part, the through hole is positioned on the inner wall of the expansion sleeve part to form a conical positioning hole, and the aperture of the conical positioning hole is gradually increased towards the direction of an opening of the conical positioning hole;

the positioning mandrel comprises a conical shaft section and a mandrel body section, and a pit for applying axial force to a top of a lathe is formed in the outer end of the conical shaft section;

the conical shaft section extends with its conical head forward into the conical positioning hole.

2. The turning mold device for operating the motor casing for the wire rope electric block according to claim 1, characterized in that: still include material returned cover and material returned nut, this section axial extension of dabber has the necking down spindle nose of outband screw thread, and material returned nut threaded connection is on the necking down spindle nose, and material returned cover is empty to overlap this section of dabber, and the material returned cover is located and expands between cover portion and the material returned nut, and the outer end of material returned cover is corresponding with the necking down spindle nose just.

3. The turning mold device for operating the motor casing for the wire rope electric block according to claim 2, characterized in that: the concave pit is conical and is arranged on the end surface of the necking shaft head.

[ background of the invention ]

In the operation motor that current confession wire rope electric block used, need to process out the tang at the surface of motor housing, the lathe work of tang is usually gone on the lathe, turns on the three-jaw chuck of lathe with motor housing clamping in advance, and the shortcoming of this clamping structure is because the clamp force that three clamping jaw of chuck was applyed the motor housing is different to lead to the centering inaccurate, and the concrete expression is not good enough at the concentricity of tang and its hole of stator, because the machining precision is low, and then influences the assembly of follow-up rotor.

Because the three-jaw chuck is clamped on the outer surface of the motor shell, the spigot can be machined on one end side of the shell after one-time clamping, when the other end side is machined, the motor shell needs to be taken down and rotated by 180 degrees to clamp the motor shell to the end side of the machined spigot again, and then a space for a cutter to machine the other spigot can be vacated. In addition, the three-jaw chuck can clamp the motor shell only through the force applying rod, so that the defect of long auxiliary clamping time exists.

[ summary of the invention ]

The invention provides a turning mold device for operating a motor shell for a steel wire rope electric block, aiming at the defects in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

the turning mold device for operating the motor shell for the steel wire rope electric block comprises a positioning mandrel and a positioning sleeve with a through hole, wherein the positioning sleeve is integrally formed by a connecting flange part, a sleeve body part and an expansion sleeve part axially extending from the sleeve body part, a positioning journal for positioning and mounting on a main shaft of a lathe is axially formed on the outer side wall of the connecting flange part, a conical positioning hole is formed in the inner wall of the through hole, which is positioned on the expansion sleeve part, and the aperture of the conical positioning hole is gradually increased towards the direction of an opening of the conical positioning hole; the positioning mandrel comprises a conical shaft section and a mandrel body section, and a pit for applying axial force to a top of a lathe is formed in the outer end of the conical shaft section; the conical shaft section extends with its conical head forward into the conical positioning hole.

Preferably, the material returning sleeve and the material returning nut are further included, a necking shaft head with an external thread extends axially from the mandrel body section, the material returning nut is connected to the necking shaft head in a threaded mode, the material returning sleeve is sleeved on the mandrel body section in an empty mode, the material returning sleeve is located between the expansion sleeve portion and the material returning nut, and the outer end of the material returning sleeve is just corresponding to the necking shaft head.

The concave pit is conical and is arranged on the end surface of the necking shaft head.

The working principle of the invention is as follows: the motor shell with the stator is sleeved on the positioning sleeve and the material returning sleeve, then a top head of a lathe is aligned to the central point of the concave pit, the conical surface of the concave pit is pressed by the top head to generate axial force on the positioning core shaft, along with the fact that the conical shaft section gradually penetrates into the conical positioning hole, the expanding sleeve portion correspondingly converts into gradually and uniformly increased radial expansion force, centering is guaranteed and circumferential rotation of the stator and the shell is prevented under a tensioning state, then the surface of the motor shell is subjected to seam allowance processing, and the seam allowance processed can guarantee that the seam allowance and an inner hole of a stator iron core have the same concentricity.

Compared with the prior art, the invention has the following positive technical effects:

the positioning sleeve with the positioning shaft neck can be positioned and installed on a main shaft of a lathe, the centering precision of the device is high, the positioning sleeve can be repeatedly used as a reference center when a spigot of a motor shell is machined, the positioning mandrel has the positioning function and the tensioning function, the structure greatly shortens the preparation time for fixing the motor shell with the stator before turning, the structural design is simple, the machining is simple, the clamping type turning machining adopted in the prior art is abandoned, the spigot of the motor shell is machined in the tensioning positioning state instead, and after the technical scheme is adopted, the concentricity of an inner hole (a mounting hole for installing the rotor) of a stator iron core and the spigot is ensured, so that the assembly precision of a subsequent rotor is improved.

In addition, due to the adoption of internal tensioning positioning, the processing of the seam allowance of the motor shell by the cutter is not interfered, one motor shell can be tensioned and positioned at one time, the seam allowance is processed for the second time, and the working efficiency is improved again.

[ description of the drawings ]

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the mounting of a motor housing configured with a stator to the present invention.

[ detailed description ] embodiments

Referring to fig. 1 and 2, a turning mold device for operating a motor housing for a wire rope electric block comprises a positioning mandrel 2 and a positioning sleeve 1 with a through hole 10, wherein the positioning sleeve 1 is integrally formed by a connecting flange part 11, a sleeve body part 12 and an expanding sleeve part 13 axially extending from the sleeve body part, a positioning journal 110 for positioning and mounting on a main shaft of a lathe (well known and not shown) is axially formed on the outer side wall of the connecting flange part 11, a conical positioning hole 130 is formed by the through hole 10 on the inner wall of the expanding sleeve part 13, and the diameter of the conical positioning hole 130 is gradually increased towards the opening direction; the positioning mandrel 2 comprises a conical shaft section 23 and a mandrel body section 22, and a pit 210 for applying axial force to a top of a lathe is formed in the outer end of the conical shaft section 23; the conical shaft section 23 projects with its conical head forward into the conical positioning bore 130.

As a preferred embodiment, the present invention further comprises a material returning sleeve 3 and a material returning nut 4, wherein the mandrel body section 22 extends axially to form a neck shaft head 21 with external threads, the material returning nut 4 is connected to the neck shaft head 21 in a threaded manner, the material returning sleeve 3 is sleeved on the mandrel body section 22 in an empty manner, the material returning sleeve 3 is located between the sleeve expanding portion 13 and the material returning nut 4, and the material returning sleeve 3 is located at an outer end position corresponding to the neck shaft head 21.

The sleeve body part 12 is of an equal-diameter structure, and the outer diameter of the expansion sleeve part 13 is also of an equal-diameter structure; the material returning sleeve 3 is of an equal-diameter structure, and the outer diameters of the material returning sleeve 3, the material returning sleeve and the material returning sleeve are equal.

The recess 210 is tapered and is provided in the end face of the neck stub shaft 21.

When the too big motor housing M that leads to of tight process top pressure can't get from this device smoothly, handle through following, concrete operation is as follows:

the material returning nut 4 is rotated clockwise to jack the outer port of the material returning sleeve 3 to eliminate the axial clearance between the two, the nut 4 is rotated continuously until the positioning mandrel 2 moves outwards from the conical positioning hole 130 in the axial direction, at the moment, the motor shell M can be easily taken away from the positioning sleeve 1, and then the next motor shell can be processed and prepared.

When the device is installed on a main shaft of a lathe, the positioning shaft neck 110 is firstly aligned to a corresponding positioning groove (not shown) on the main shaft, then a fastening bolt is inserted into the assembling hole 11-1 and then the main shaft is screwed, and at the moment, the central line of the positioning sleeve 1 is collinear with the axial line of the main shaft.

In the device, a positioning sleeve 1 is used as a reference center of an inner hole of a stator core (a stator is assembled in a motor shell), and the central line of the positioning sleeve 1 is collinear with the axial lead of a positioning core shaft 2; the recess 210 is tapered and the center point of the recess 210 is on the axis of the positioning mandrel 2.

Referring to fig. 2, the motor housing M has two machined left and right spigots M1, the spigot M1 is used for mounting a motor end cover, and the motor end cover is used for supporting a rotor shaft.

As can be seen in figure 1, the die device only comprises a positioning sleeve 1, a positioning mandrel 2, a material returning sleeve 3 and a material returning nut 4.