Tool structure for turning shaft sleeve parts

Abstract

The utility model relates to a tool structure for turning shaft sleeve parts, and belongs to the technical field of turning of automobile transmission shafts. According to the technical scheme, a first screw (3) penetrates through a main body (2), a spacer bush (4) and a cone (5) to be fastened with a connector (6), and a pull rod (1) penetrates through a center hole (24) in the bottom of the main body (2) to be connected with an inner hole (18) of the cone (5); the heads of the three split type mother claws (9) are connected with three child claws (12) through corresponding third screws (13) respectively, and the three child claws (12) are arranged at the interval of 120 degrees to clamp a workpiece (22). The clamp has the advantages that the clamping stroke of the clamping jaws of the clamp can be enlarged, clamping turning of shaft sleeve parts with the difference of the diameter of a shaft shoulder and the diameter of a clamping positioning position being 12 mm is achieved, and the machining range of a machine tool is enlarged.

Description

Technical Field

[0001] The utility model relates to a tooling structure for turning shaft sleeve parts, which is suitable for processing shaft parts with a large difference between the shaft shoulder diameter and the clamping position diameter, and belongs to the technical field of automobile transmission shaft turning processing. Background Art

[0002] The turning of transmission shaft parts is one of the necessary processing links in the transmission manufacturing process, which plays a decisive role in whether the transmission can work normally in the vehicle. At present, when turning parts, the clamping mechanism is clamped by a hydraulic three-jaw chuck, but due to the limitation of the jaw stroke, if the shoulder diameter of these shaft parts is greatly different from the clamping position diameter, the workpiece shoulder size will exceed the jaw clamping stroke, and the workpiece cannot be clamped for processing. Utility Model Content

[0003] The utility model aims to provide a tooling structure for turning shaft sleeve parts, which amplifies the tight travel of the clamp claws, realizes the clamping and turning processing of shaft sleeve parts in the transmission whose diameter of some shaft shoulders differs greatly from the diameter of the clamping positioning point, expands the processing range of the machine tool, and solves the above-mentioned technical problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A tooling structure for turning shaft sleeve parts, comprising a pull rod, a main body, a spacer, a cone, a connector, an axial locator, a split female claw, a cylindrical pin, a spring and a child claw. The connector is a disc-shaped structure with three installation grooves spaced along the circumference. The three split female claws are respectively placed in the corresponding installation grooves, and the split female claws are clamped in the installation groove of the connector through the cylindrical pin. A spring groove 1 is provided at the bottom of the installation groove of the connector, and a matching spring groove 2 is provided at the tail of the split female claw. Both ends of the spring are respectively placed in the spring groove 1 and the spring groove 2, and an outer conical surface is provided at the head of the split female claw. The cone is a barrel-shaped structure with an open end, and the open end is an inner conical surface that matches the outer conical surface of the split female claw. An inner hole is provided at the center of the barrel bottom, and a spring groove 2 is provided along the barrel bottom. Three holes are arranged at intervals in the circumferential direction; the main body is a barrel-shaped structure with an opening at one end, the inner diameter of the main body is the same as the outer diameter of the cone, the inner diameter of the cone is the same as the outer diameter of the connector, the three spacers are respectively inserted into the three holes of the cone, the connector is placed in the inner cavity of the cone, the main body and the cone are fitted together, three screws are respectively passed through the main body, the spacers and the cone to fasten the connector together, the outer circle of the pull rod passes through the center hole at the bottom of the main body and is connected to the inner hole of the cone; an axial positioning hole is arranged in the center of the connector, the axial locator is installed in the axial positioning hole of the connector, and the axial locator matches the axis of the workpiece; the heads of the three split female claws are respectively connected to the three sub-claws through corresponding screws, and the three sub-claws are arranged at 120 degrees apart to clamp the workpiece.

[0006] Furthermore, the pull rod is connected to the pull rod of the machine tool, and the main body is connected to the main shaft of the machine tool through six screws. The movement of the pull rod of the machine tool drives the movement of the pull rod and the cone. The workpiece of the sleeve is directly loaded into the fixture composed of the split mother claw and the son claw. The end face of the workpiece contacts the axial locator to achieve axial positioning of the workpiece. At this time, the machine tool clamping instruction is run, and the machine tool pull rod drives the pull rod of the utility model to move to achieve the clamping of the workpiece. During operation, the split mother claw cooperates with the conical surface of the cone to achieve clamping and loosening of the workpiece. The split mother claw enlarges the stroke of the split mother claw by rotating the cylindrical pin, thereby achieving the clamping of sleeve parts with a large difference in diameter between the shaft shoulder and the clamping position.

[0007] The positive effects of the utility model are as follows: by adopting the utility model, the clamping stroke of the clamping claws can be enlarged, so as to realize the clamping turning processing of shaft sleeve parts whose shaft shoulder diameter differs by 12mm from the diameter of the clamping position, expand the processing range of the machine tool, and be suitable for small batch and multi-variety processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the structure of the clamping state of an embodiment of the utility model;

[0009] Figure 2 This is a schematic diagram of the connector structure of an embodiment of the utility model;

[0010] Figure 3 This is a schematic cross-sectional view of the connector AA according to an embodiment of the utility model;

[0011] Figure 4 This is a schematic diagram of the split female claw structure of an embodiment of the utility model;

[0012] Figure 5 This is a cross-sectional schematic diagram of the split female claw BB of the embodiment of the utility model;

[0013] Figure 6 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0014] Figure 7 This is a schematic diagram of the structure of the spacer sleeve in an embodiment of the utility model;

[0015] Figure 8 This is a schematic diagram of the cone structure of an embodiment of the utility model;

[0016] Fig. 9 This is a schematic diagram of the pull rod structure of an embodiment of the utility model;

[0017] Fig.10 This is a schematic diagram of the claw structure of an embodiment of the utility model;

[0018] Fig.11 This is a cross-sectional schematic diagram of the example claw CC of the embodiment of the utility model;

[0019] Fig.12 This is a schematic diagram of the structure of the axial positioner of the utility model embodiment;

[0020] In the figure: pull rod 1, main body 2, screw 1 3, spacer 4, cone 5, connector 6, axial locator 7, screw 2 8, split female claw 9, cylindrical pin 10, spring 11, sub-claw 12, screw 3 13, spring slot 1 14, spring slot 2 15, hole 16, inner cavity 17, inner hole 18, axial locating hole 19, inner cone 20, outer cone 21, workpiece 22, mounting groove 23, center hole 24. DETAILED DESCRIPTION

[0021] The present invention will be further described below by way of examples in conjunction with the accompanying drawings.

[0022] See attached Figure 1-12 The present embodiment provides a tooling structure for turning shaft sleeve parts, comprising a pull rod 1, a main body 2, a spacer sleeve 4, a cone 5, a connector 6, an axial positioner 7, a split female claw 9, a cylindrical pin 10, a spring 11 and a child claw 12. The connector 6 is a disc-shaped structure, and three mounting grooves 23 are arranged at intervals along the circumference. The three split female claws 9 are respectively placed in the corresponding mounting grooves 23, and the split female claws 9 are clamped in the mounting grooves 23 of the connector 6 through the cylindrical pin 10. The bottom of the mounting groove of the connector 6 is provided with a spring groove 14, and the tail of the split female claw 9 is provided with a matching spring groove 25. Both ends of the spring 11 are provided with a spring groove 14. The main body 2 is a barrel-shaped structure with an opening at one end, and the inner diameter of the main body 2 is the same as the outer diameter of the cone 5, and the inner diameter of the cone 5 is the same as the outer diameter of the connector 6. The three spacers 4 are respectively inserted into the three holes 16 of the cone 5, and the connector 6 is placed in the inner cavity 17 of the cone 5. The main body 2 and the cone 5 are connected to each other. The assembly is composed of three screws 3 that pass through the main body 2, the spacer sleeve 4 and the cone 5 and are fastened together with the connector 6. The outer circle of the pull rod 1 passes through the central hole 24 at the bottom of the main body 2 and is connected with the inner hole 18 of the cone 5. An axial positioning hole 19 is provided at the center of the connector 6. The axial positioning device 7 is installed in the axial positioning hole 19 of the connector 6. The axial positioning device 7 matches the axis of the workpiece 22. The heads of the three split female claws 9 are respectively connected with the three sub-claws 12 through corresponding screws 13. The three sub-claws 12 are arranged at an interval of 120 degrees to clamp the workpiece 22.

[0023] The pull rod 1 is connected to the pull rod of the machine tool, and the main body 2 is connected to the main shaft of the machine tool through six screws 8. During operation, the pull rod of the machine tool moves, driving the pull rod 1 and the cone 5 to move.

[0024] When the machine tool pull rod moves to the right, the pull rod 1 and the cone 5 move to the right together. At this time, the inner cone surface 20 of the cone 5 (the inclination angle R2 of the inner cone surface 20 is 15°) presses the outer cone surface 21 of the split female claw 6 (the inclination angle R1 of the outer cone surface 21 is 15°), and the split female claw 9 drives the sub-claw 12 inward to clamp the workpiece 22. At this time, the spring 11 is compressed.

[0025] When the machine tool pull rod moves to the left, the pull rod 1 and the cone 5 move to the left together, and the inner cone surface 20 (the inclination angle R2 of the inner cone surface 20 is 15°) of the cone 5 is separated from the outer cone surface 21 (the inclination angle R1 of the outer cone surface 21 is 15°) of the split female claw 9. At this time, the spring 11 rebounds and pushes the split female claw 9 outward to drive the sub-claw 12 to release the workpiece 22.

[0026] In the embodiment, the split female claw 9 is first connected to the connector 6 through the cylindrical pin 10, and then the spring 11 is placed between the split female claw 9 and the connector 6; then the connector 6 is placed in the cone 5, the three-piece spacer sleeve 4 is inserted into the three Φ16mm holes 16 of the cone 5, the spacer sleeve 4, the cone 5 and the connector 6 are placed together in the inner cavity of the main body 2, three screws 3 are passed through the main body 2 and the spacer sleeve 4 to fasten the connector 6 together, the Φ37mm outer circle of the pull rod 1 is passed through the Φ37mm inner hole 18 of the main body 2 to connect with the cone 5, and then the pull rod 1 is connected to the machine tool pull rod, and finally six screws 8 are used to connect the main body 2 to the machine tool spindle, and finally the axial locator 7 is installed in the axial locating hole 19 of the connector 6.

[0027] When using the utility model, first use a dial indicator to measure the axial and radial runout of the utility model. After the runout meets the requirements, directly load the sleeve-type workpiece 22 into the fixture composed of the split female claw 9 and the child claw 12. The end face of the workpiece 22 contacts the axial locator 7 to achieve axial positioning of the workpiece 22. At this time, the machine tool clamping command is run, and the machine tool pull rod drives the pull rod 1 of the utility model to move to achieve clamping of the workpiece 22.

[0028] During operation, the split female jaw 9 cooperates with the conical surface of the cone 5 to clamp and loosen the workpiece. The split female jaw 9 enlarges the stroke of the solid female jaw 9 by rotating the cylindrical pin 10, thereby clamping sleeve-like parts with a large diameter difference between the shaft shoulder and the clamping position.

Claims

1. A tooling structure for turning sleeve parts, Features: The invention comprises a pull rod (1), a main body (2), a spacer (4), a cone (5), a connector (6), an axial positioner (7), a split female claw (9), a cylindrical pin (10), a spring (11) and a sub-claw (12). The connector (6) is a disc-shaped structure, and three mounting grooves (23) are arranged at intervals along the circumference. The three split female claws (9) are respectively placed in the corresponding mounting grooves (23), and the split female claws (9) are clamped in the mounting grooves (23) of the connector (6) through the cylindrical pin (10). The connector (6) ) is provided with a spring groove 1 (14) at the bottom of the installation groove, a matching spring groove 2 (15) is provided at the tail of the split female claw (9), the two ends of the spring (11) are respectively placed in the spring groove 1 (14) and the spring groove 2 (15), and the head of the split female claw (9) is provided with an outer conical surface (21); the cone (5) is a barrel-shaped structure with an open end, the open end is an inner conical surface (20), which matches the outer conical surface (21) of the split female claw (9), an inner hole (18) is provided at the center of the barrel bottom, and three holes are provided at intervals along the circumferential direction of the barrel bottom (16); the main body (2) is a barrel-shaped structure with one end open, the inner diameter of the main body (2) is the same as the outer diameter of the cone (5), the inner diameter of the cone (5) is the same as the outer diameter of the connector (6), three spacers (4) are respectively inserted into the three holes (16) of the cone (5), the connector (6) is placed in the inner cavity (17) of the cone (5), the main body (2) and the cone (5) are fitted together, three screws (3) are respectively passed through the main body (2), the spacers (4) and the cone (5) and the connector (6) are fastened together, and the pull rod (1) The outer circle of the connector (6) passes through the center hole (24) at the bottom of the main body (2) and is connected to the inner hole (18) of the cone (5); an axial positioning hole (19) is provided at the center of the connector (6), and the axial positioner (7) is installed in the axial positioning hole (19) of the connector (6), and the axial positioner (7) matches the axis of the workpiece (22); the heads of the three split female claws (9) are respectively connected to the three sub-claws (12) through corresponding screws (13), and the three sub-claws (12) are arranged at intervals of 120 degrees to clamp the workpiece (22).

2. A tooling structure for turning sleeve parts according to claim 1, Features: The pull rod (1) is connected to a machine tool pull rod, and the main body (2) is connected to a machine tool spindle via six screws (8).

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