A center support tool for hollow shaft machining

Abstract

The utility model discloses a center support frock is used in hollow shaft processing, including outer support frock, the rear end of outer support frock is provided with mounting bracket, install first electric cylinder on the mounting bracket, one end fixed connection inner support frock of first electric cylinder push rod, outer support frock includes first clamping block and second clamping block, first clamping block is by second electric cylinder drive, second clamping block is by third electric cylinder drive, all be set up on first clamping block and second clamping block and locate the groove, inner support frock includes base and inner support head. The utility model discloses that the outer circle of hollow shaft is fixedly clamped to outer support frock, and the inner hole of hollow shaft is supported through inner support frock, and center support frock includes two different support forms, and the inner support and outer support are integrated, satisfy different processing demand, need not to carry out the frequent assembly and disassembly to frock, convenient to use, and further improved the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hollow shaft machining tooling technology, specifically a center support tooling for hollow shaft machining. Background Technology

[0002] Hollow shafts are shaft parts with a hollow internal structure, widely used in machinery, engineering, automotive, aerospace, and other fields. Their core feature is a hollow center section, which, through optimized structural design, achieves lightweighting, material savings, or meets specific functional requirements. The machining of hollow shafts typically involves several stages: material preparation, rough machining, finish machining, surface treatment, and inspection. In hollow shaft machining, a central support fixture is a crucial auxiliary tool ensuring the stability and accuracy of the workpiece during processing.

[0003] The machining of hollow shafts includes internal and external machining. Different support fixtures are required for internal and external machining. When changing fixtures, the original fixtures need to be disassembled and the new fixtures need to be installed, which is inconvenient and affects machining efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a central support fixture for machining hollow shafts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a center support fixture for hollow shaft machining, comprising an outer support fixture, a mounting frame at the rear end of the outer support fixture, a first electric cylinder mounted on the mounting frame, one end of the push rod of the first electric cylinder being fixedly connected to an inner support fixture, the outer support fixture comprising a first clamping block and a second clamping block, the first clamping block being driven by a second electric cylinder, the second clamping block being driven by a third electric cylinder, and positioning grooves being provided on both the first and second clamping blocks; the inner support fixture comprising a base and an inner support head, the inner support head having a built-in push block, the push block being driven by a fourth electric cylinder.

[0006] The external support fixture includes a stand, the second electric cylinder is installed at the top of the stand, the third electric cylinder is installed at the bottom of the stand, one end of the push rod of the second electric cylinder is fixedly connected to the first clamping block, and one end of the push rod of the third electric cylinder is fixedly connected to the second clamping block.

[0007] The upright frame is equipped with a slide bar, the first clamping block is slidably connected to the slide bar, and the second clamping block is slidably connected to the slide bar.

[0008] The positioning groove is configured as a V-shaped structure.

[0009] The inner support head is provided with multiple sets of sliders, and the sliders are slidably connected to the inner support head.

[0010] The pusher includes a conical surface, and the slider includes an inclined surface.

[0011] The fourth electric cylinder is mounted on the base, and one end of the push rod of the fourth electric cylinder is fixedly connected to the push block.

[0012] The conical surface of the pusher block is in contact with the inclined surface of the slider.

[0013] The multiple sets of sliders are evenly distributed at intervals along the circumference of the inner support head.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model uses an external support fixture to clamp and fix the outer circle of the hollow shaft, and an internal support fixture to support the inner hole of the hollow shaft. The central support fixture includes two different support forms, integrating internal and external support into one unit to meet different processing needs. It eliminates the need for frequent assembly and disassembly of the fixture, making it convenient to use and thus improving processing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one side view of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure from another side view of the present invention;

[0018] Figure 3 This is a schematic diagram of the external support fixture of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal support fixture of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal support tooling of this utility model;

[0021] Figure 6 This is a partial sectional view of the internal support fixture of this utility model.

[0022] In the diagram: 1. External support fixture; 2. Mounting frame; 3. First electric cylinder; 4. Internal support fixture; 11. Stand; 12. Second electric cylinder; 13. First clamping block; 14. Third electric cylinder; 15. Second clamping block; 16. Positioning groove; 17. Sliding bar; 41. Base; 42. Internal support head; 43. Fourth electric cylinder; 44. Push block; 45. Sliding block; 46. Inclined surface. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a center support fixture for hollow shaft processing, including an outer support fixture 1, a mounting frame 2 is provided at the rear end of the outer support fixture 1, a first electric cylinder 3 is mounted on the mounting frame 2, one end of the push rod of the first electric cylinder 3 is fixedly connected to an inner support fixture 4, the outer support fixture 1 includes a first clamping block 13 and a second clamping block 15, the first clamping block 13 is driven by a second electric cylinder 12, the second clamping block 15 is driven by a third electric cylinder 14, and positioning grooves 16 are provided on both the first clamping block 13 and the second clamping block 15, the inner support fixture 4 includes a base 41 and an inner support head 42, the inner support head 42 has a push block 44 built in it, and the push block 44 is driven by a fourth electric cylinder 43.

[0025] The central support fixture includes an outer support fixture 1 and an inner support fixture 4. The outer support fixture 1 clamps and fixes the outer circle of the hollow shaft, while the inner support fixture 4 supports the inner hole of the hollow shaft. The central support fixture includes two different support forms to meet different processing requirements.

[0026] When using external support fixture 1 to fix the hollow shaft, such as Figure 3 As shown, the inner support fixture 4 is positioned at the rear to avoid obstruction, and the outer support fixture 1 at the front clamps the outer circle of the hollow shaft to achieve clamping. When the inner support fixture 4 is used to fix the hollow shaft, as shown... Figure 4 As shown, the first clamping block 13 and the second clamping block 15 of the outer support fixture 1 move to the sides to avoid each other. The inner support fixture 4 extends under the drive of the first electric cylinder 3 and moves to the front. The inner hole of the hollow shaft is supported by the inner support fixture 4 at the front position to achieve clamping. The position of the inner support fixture 4 can be adjusted according to the processing type of the hollow shaft to achieve flexible switching between the inner support fixture 4 and the outer support fixture 1. The central support fixture integrates the inner support and the outer support, which can meet different processing requirements without the need for frequent assembly and disassembly of the fixture.

[0027] The center support fixture can also provide both internal hole support and external circle support, improving the stability of the hollow shaft during machining.

[0028] The external support fixture 1 includes a frame 11, a second electric cylinder 12 installed at the top of the frame 11, a third electric cylinder 14 installed at the bottom of the frame 11, one end of the push rod of the second electric cylinder 12 is fixedly connected to the first clamping block 13, and one end of the push rod of the third electric cylinder 14 is fixedly connected to the second clamping block 15.

[0029] The support frame 11 is provided with a slide bar 17, the first clamping block 13 is slidably connected to the slide bar 17, and the second clamping block 15 is slidably connected to the slide bar 17.

[0030] When the second electric cylinder 12 is working, it drives the first clamping block 13 at one end to slide along the slide bar 17 of the upright 11. When the third electric cylinder 14 is working, it drives the second clamping block 15 at one end to slide along the slide bar 17 of the upright 11. The second electric cylinder 12 and the third electric cylinder 14 work synchronously, driving the first clamping block 13 and the second clamping block 15 to move the same distance.

[0031] The positioning groove 16 is configured as a V-shaped structure, with the V-shaped edge of the positioning groove 16 contacting the outer circle of the hollow shaft. The positioning groove 16 of the first clamping block 13 and the positioning groove 16 of the second clamping block 15 drive the hollow shaft to move, and the hollow shaft is pushed towards the center to achieve center support positioning.

[0032] The inner support head 42 is provided with multiple sets of sliders 45, and the sliders 45 are slidably connected to the inner support head 42. Under the drive of external force, the sliders 45 can slide relative to the inner support head 42, and the sliders 45 will not fall out.

[0033] The pusher 44 includes a conical surface, and the slider 45 includes an inclined surface 46.

[0034] The fourth electric cylinder 43 is mounted on the base 41, and one end of the push rod of the fourth electric cylinder 43 is fixedly connected to the push block 44.

[0035] The conical surface of the pusher 44 is in contact with the inclined surface 46 of the slider 45.

[0036] When the fourth electric cylinder 43 is working, it drives the push block 44 at one end. The conical surface of the push block 44 presses against the inclined surface 46 of the multiple sets of sliders 45. The multiple sets of sliders 45 slide outward under the action of external force. The multiple sets of sliders 45 contact the inner circle of the hollow shaft, support the inner hole of the hollow shaft, and realize the central support positioning.

[0037] Multiple sets of sliders 45 are evenly distributed along the circumference of the inner support head 42, enabling multi-point positioning.

[0038] Working principle: During use, the position of the inner support fixture 4 is adjusted according to the machining type of the hollow shaft. When the outer support fixture 1 is used to fix the hollow shaft, such as... Figure 3As shown, the inner support fixture 4 is positioned at the rear to avoid obstruction, and the outer support fixture 1 at the front clamps the outer circle of the hollow shaft to achieve clamping. When the inner support fixture 4 is used to fix the hollow shaft, as shown... Figure 4 As shown, the first clamping block 13 and the second clamping block 15 of the outer support fixture 1 move to the sides to avoid each other, and the inner support fixture 4 extends out under the drive of the first electric cylinder 3 and moves to the front. The inner hole of the hollow shaft is supported by the inner support fixture 4 at the front position to achieve clamping.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A central support fixture for machining hollow shafts, comprising an outer support fixture (1), characterized in that: The rear end of the external support fixture (1) is provided with a mounting frame (2), and a first electric cylinder (3) is installed on the mounting frame (2). One end of the push rod of the first electric cylinder (3) is fixedly connected to the inner support fixture (4). The external support fixture (1) includes a first clamping block (13) and a second clamping block (15). The first clamping block (13) is driven by a second electric cylinder (12), and the second clamping block (15) is driven by a third electric cylinder (14). The first clamping block (13) and the second clamping block (15) are both provided with positioning grooves (16). The inner support fixture (4) includes a base (41) and an inner support head (42). The inner support head (42) has a push block (44) built in it, and the push block (44) is driven by a fourth electric cylinder (43).

2. The center support fixture for machining a hollow shaft according to claim 1, characterized in that: The external support fixture (1) includes a stand (11), the second electric cylinder (12) is installed at the top of the stand (11), the third electric cylinder (14) is installed at the bottom of the stand (11), one end of the push rod of the second electric cylinder (12) is fixedly connected to the first clamping block (13), and one end of the push rod of the third electric cylinder (14) is fixedly connected to the second clamping block (15).

3. The central support fixture for machining a hollow shaft according to claim 2, characterized in that: The support frame (11) is provided with a slide bar (17), the first clamping block (13) is slidably connected to the slide bar (17), and the second clamping block (15) is slidably connected to the slide bar (17).

4. The central support fixture for machining a hollow shaft according to claim 1, characterized in that: The positioning groove (16) is configured as a V-shaped structure.

5. The center support fixture for machining a hollow shaft according to claim 1, characterized in that: The inner support head (42) is provided with multiple sets of sliders (45), and the sliders (45) are slidably connected to the inner support head (42).

6. The central support fixture for machining a hollow shaft according to claim 5, characterized in that: The pusher (44) includes a conical surface, and the slider (45) includes an inclined surface (46).

7. The center support fixture for machining a hollow shaft according to claim 6, characterized in that: The fourth electric cylinder (43) is mounted on the base (41), and one end of the push rod of the fourth electric cylinder (43) is fixedly connected to the push block (44).

8. The center support fixture for machining a hollow shaft according to claim 7, characterized in that: The conical surface of the pusher (44) is in contact with the inclined surface (46) of the slider (45).

9. A center support fixture for machining a hollow shaft according to claim 8, characterized in that: Multiple sets of sliders (45) are evenly distributed along the circumferential direction of the inner support head (42).

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