Universal long shaft part gear shaping clamp

Abstract

The utility model belongs to the technical field of machine tool machining, and discloses a universal long shaft part gear shaping clamp which comprises a connector, a body and a positioning support. The body is coaxially communicated with the positioning support, and a limiting step is formed at the joint of the body and the positioning support; an expansion sleeve is arranged in the body in a sleeved mode, the top end of the expansion sleeve can abut against the limiting step, and the lower end of the expansion sleeve stretches into the installation cavity. And a third mounting hole for fixing the long shaft part to be machined is formed in the expansion sleeve in a penetrating manner. The gear shaping clamp comprises the body and the positioning supports which are detachably connected, and the length of the gear shaping clamp can be adjusted by replacing the positioning supports with different lengths for long-shaft parts with different lengths, so that the variety of the long-shaft parts compatible with the clamp is expanded, the whole set of gear shaping clamp does not need to be replaced during production replacement, rapid production replacement is achieved, and the production efficiency is improved. And the production cost of an enterprise is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lathe machining technical field, concretely relates to a general long shaft part gear shaping fixture. BACKGROUND

[0002] At present, the internal and external teeth of long shaft parts are mostly processed by gear shaping process, and in order to cooperate with the gear shaping machine tool, the corresponding integral gear shaping fixture needs to be designed according to the length and structure of the part. When changing production, due to the difference in part structure and length, the whole set of gear shaping fixture needs to be replaced, and the long shaft part gear shaping fixture has a complex structure and a large volume, and the whole set weighs about 70 kg, so it needs to be lifted to the machine tool workbench and installed by means of a jib crane, a forklift and other lifting auxiliary equipment, which leads to a long gear shaping fixture replacement cycle and affects the processing rhythm.

[0003] The gear shaping fixture generally adopts the positioning mode of a clamping and positioning round of a rising sleeve and a tail center, in order to ensure the processing effect, the clamping and positioning round of the rising sleeve needs to be close to the tooth part to be processed for part positioning, so as to ensure the tooth part precision after processing, and due to the length of some long shaft parts exceeding 500 mm, the fixture designed by the above scheme has a long length of the rising sleeve and a large volume of the clamp body, which is difficult to manufacture and transport and install, and at the same time, it is limited by the length of the center, so one length of part needs to correspond to one fixture, which leads to limited fixture versatility and high processing cost.

[0004] In order to reduce the processing difficulty of the gear shaping fixture, realize the light weight of the fixture, increase the versatility of the fixture, reduce the frequency of replacing the fixture and improve the production change efficiency, it is urgent to design a new long shaft part gear shaping fixture. SUMMARY

[0005] The utility model discloses a general long shaft part gear shaping fixture, which solves the technical problem of large volume and poor versatility of the shaft gear shaping fixture in the prior art.

[0006] In order to achieve the above task, the utility model adopts the following technical scheme:

[0007] A general long shaft part gear shaping fixture, comprising a joint, a body and a positioning support, the joint is provided with an installation cavity with an open top;

[0008] The body and the positioning support are coaxially communicated, and a limiting step is formed at the connection between the body and the positioning support;

[0009] The body is provided with a rising sleeve, the top end of the rising sleeve can abut against the limiting step, and the lower end of the rising sleeve extends into the installation cavity.

[0010] The utility model also has the following technical features:

[0011] Specific, the through hole is provided with a third mounting hole in the sleeve for fixing the long shaft parts to be processed.

[0012] Further, the first mounting hole and the second mounting hole are coaxially communicated.

[0013] Further, the first mounting hole includes a coaxially communicated cylindrical hole and a frustum hole.

[0014] The sleeve includes a first connecting section, a cylindrical section, a second connecting section and a frustum section which are integrally connected, the first connecting section extends into the mounting cavity, the cylindrical section and the second connecting section are both provided in the cylindrical hole, the frustum section is provided in the frustum hole, and the upper end of the frustum section abuts against the limiting step.

[0015] Further, the joint and the sleeve are connected by a first screw.

[0016] Further, the body and the positioning support are connected by a second screw.

[0017] Further, a connecting disc is formed on the lower end of the body, and a handle is arranged on the upper surface of the connecting disc.

[0018] Further, an external thread is arranged on the outer wall of the sleeve in a circumferential direction, and an internal thread matched with the external thread is arranged on the inner wall of the mounting cavity in a circumferential direction.

[0019] Further, a plurality of radial limiting holes are arranged on the body in a circumferential direction, and a limiting bolt capable of limiting the rotation of the sleeve is arranged in the radial limiting hole.

[0020] Compared with the prior art, the utility model has the following technical features:

[0021] (1) The utility model discloses a body and a positioning support which are detachably connected, for long shaft parts of different lengths, the length adjustment of the gear shaping clamp can be realized by replacing the positioning supports of different lengths, thereby expanding the compatible long shaft part types of the clamp, when changing production, the whole gear shaping clamp does not need to be replaced, quick production change is realized, and the production cost of enterprises is saved.

[0022] (2) The utility model discloses a structure design, especially the small gap cooperation between the long shaft parts to be processed and the upper end of the sleeve and the mouth of the positioning support, centering is realized, and the influence of the precision of the clamp itself on the machining precision is reduced.

[0023] (3) The utility model discloses simple structure, convenient to use, and has very strong popularization and use value. DRAWINGS

[0024] Figure 1 This is a cross-sectional view of the gear-shaping fixture that clamps long shaft-type parts in Example 1;

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 3 This is a top view of the main structure;

[0027] Figure 4 This is a sectional view of the body;

[0028] Figure 5 This is a cross-sectional view of the expansion sleeve.

[0029] The labels in the diagram represent:

[0030] 1-Connector, 2-Body, 3-Positioning support, 4-Limiting step, 5-Expansion sleeve, 6-First screw, 7-Second screw, 8-Limiting bolt; 11-Mounting cavity; 21-Connecting plate, 22-First mounting hole, 31-Second mounting hole; 51-First connecting section, 52-Cylindrical section, 53-Second connecting section, 54-Frustoconical section, 55-Third mounting hole; 221-Cylindrical hole, 222-Frustoconical hole. Detailed Implementation

[0031] The following provides specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally defined based on the drawing of the corresponding figure, and "inner" and "outer" refer to the inner and outer contours of the corresponding components.

[0033] It should be emphasized that, unless otherwise specified, all parts used in this utility model are commercially available.

[0034] Example 1

[0035] Following the above technical solutions, such as Figures 1 to 5 As shown, this embodiment discloses a general-purpose long shaft part gear clamp, including a connector 1, a body 2 and a positioning support 3, wherein the connector 1 is provided with a top-open mounting cavity 11;

[0036] The main body 2 and the positioning support 3 are coaxially connected, and a limiting step 4 is formed at the connection between the main body 2 and the positioning support 3;

[0037] The body 2 is sleeved with a swelling sleeve 5, the top end of the swelling sleeve 5 can abut against the limiting step 4, the lower end of the swelling sleeve 5 extends into the installation cavity 11 and is connected with the connector 1, and the limiting step 4 can limit the axial movement of the swelling sleeve 5.

[0038] As a preferred scheme of the embodiment, a third installation hole 51 for fixing a long shaft type part to be processed is arranged through the swelling sleeve 5.

[0039] As a preferred scheme of the embodiment, a first installation hole 22 is arranged through the body 2 in the axial direction, a second installation hole 31 is arranged through the positioning support 3 in the axial direction, and the first installation hole 22 and the second installation hole 31 are coaxially communicated.

[0040] As a preferred scheme, the inner diameter of the third installation hole 51 is smaller than the inner diameter of the second installation hole 31, and the long shaft type part arranged through the third installation hole 51 and the second installation hole 31 can be matched with the small gap between the upper end of the swelling sleeve 5 and the mouth of the positioning support 3.

[0041] As a preferred scheme of the embodiment, as shown in Figure 4 , the first installation hole 22 includes a coaxially communicated cylindrical hole 221 and a conical hole 222;

[0042] As shown in Figure 5 , the swelling sleeve 5 includes a first connecting section 51, a cylindrical section 52, a second connecting section 53 and a conical section 54 which are integrally connected, the first connecting section 51 extends into the installation cavity 11 and is connected with the connector 1, the cylindrical section 52 and the second connecting section 53 are arranged through the cylindrical hole 221, and the outer wall of the cylindrical section 52 can be attached to the inner wall of the cylindrical hole 221; the conical section 53 is arranged in the conical hole 222, and the upper end of the conical section 53 abuts against the limiting step 4, and the outer wall of the conical section 52 can be attached to the inner wall of the conical hole 222, so as to realize the positioning and clamping of the part.

[0043] As a preferred scheme of the embodiment, the connector 1 is connected with the swelling sleeve 5 through a first screw 6.

[0044] Specifically, a plurality of radial swelling sleeve limiting holes are arranged on the connector 1 in the circumferential direction, the first screw 6 is arranged through the swelling sleeve limiting holes, and the rotation of the swelling sleeve 5 can be limited through the first screw 6 after the connector 1 is connected with the swelling sleeve 5.

[0045] As a preferred scheme of the embodiment, the body 2 is connected with the positioning support 3 through a second screw 7, specifically, a plurality of first threaded holes are arranged on the body, a plurality of second threaded holes are also arranged on the positioning support 3, the first threaded holes and the second threaded holes are arranged one by one in correspondence, and the second screw 7 is arranged through the first threaded holes and the second threaded holes.

[0046] As a preferred scheme of the embodiment, an external flange 21 is formed on the lower end of the body 2, and a handle 9 is arranged on the upper surface of the external flange 21.

[0047] As a preferred scheme of the embodiment, an external thread is arranged on the outer wall of the expansion sleeve 5 in the circumferential direction, and an internal thread matching the external thread is arranged on the inner wall of the mounting cavity 11 in the circumferential direction.

[0048] As a preferred scheme of the embodiment, a plurality of radial limiting holes 22 are arranged on the body 2 in the circumferential direction, and a limiting bolt 8 capable of limiting the rotation of the expansion sleeve 5 is arranged in the radial limiting hole 22.

[0049] The use process of the utility model is as follows:

[0050] The joint 1 is connected with the expansion sleeve 5, the first screw 6 is screwed into the joint 1 and connected with the expansion sleeve 5, the expansion sleeve 5 is installed into the body 2, the limiting bolt 8 is screwed into the radial limiting hole 22 to prevent the rotation of the expansion sleeve 5 during machining, the handle 9 is installed for convenient use, the assembled part is installed on the machine tool workbench, the expansion sleeve 5 is rotated, the connection and assembly of the joint 1 and the machine tool hydraulic cylinder are realized by means of the external thread arranged on the lower end of the joint 1 and the internal thread at the machine tool hydraulic cylinder, after assembly, the body 2 is fixedly connected with the machine tool workbench, the positioning support 3 is installed on the upper end of the body 2, and the outer circle runout of the positioning support 3 is detected by means of a dial indicator, after the positioning support 3 is qualified, the body 2 is connected with the positioning support 3 by means of the second screw 7, the shaft type part to be machined provided with a sealing cover in the inner hole is installed into the positioning support 3 and the expansion sleeve 5, the shaft body of the shaft type part to be machined is matched with the lower port part of the positioning support 3 and the small gap of the expansion sleeve 5 to realize the centering of the part, the machining of the shaft type part is ensured to be stable during machining by means of the positioning support 3, and stress vibration and warping are not generated, the taper surface of the expansion sleeve 5 is matched with the taper surface of the body and is pressed tightly to realize the positioning and clamping of the part, and the machine tool drives the expansion sleeve 5 to move downward by pulling the joint 3.

[0051] By means of the detachably connected body 2 and positioning support 3, for different lengths of the long shaft type part, length adjustment can be realized by replacing the positioning support 3 of different lengths, so that the types of long shaft type parts compatible with the gear shaping fixture are expanded, and when the production is changed, the whole set of gear shaping fixture need not be replaced, and the production cost of enterprises is saved.

[0052] The preferred embodiments of the disclosure are described in detail in combination with the drawings, but the disclosure is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the disclosure within the technical concept of the disclosure, and these simple modifications all belong to the protection scope of the disclosure.

[0053] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and the disclosure will not be repeated here for various possible combinations.

[0054] In addition, various different embodiments of the disclosure can also be combined with each other as long as they do not contradict the idea of the disclosure, and they should also be considered as disclosed by the disclosure.

Claims

1. A general-purpose gear-shafting fixture for long shaft parts, characterized in that, It includes a connector (1), a body (2) and a positioning support (3), wherein the connector (1) is provided with a top-open mounting cavity (11). The main body (2) is coaxially connected with the positioning support (3), and a limiting step (4) is formed at the connection between the main body (2) and the positioning support (3). The body (2) is fitted with an expansion sleeve (5), the top of the expansion sleeve (5) can abut against the limiting step (4), and the lower end of the expansion sleeve (5) extends into the mounting cavity (11).

2. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, The expansion sleeve (5) has a third mounting hole (55) through which a long shaft part to be processed is fixed.

3. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, The main body (2) has a first mounting hole (22) through it along the axial direction, and the positioning support (3) has a second mounting hole (31) through it along the axial direction. The first mounting hole (22) and the second mounting hole (31) are coaxially connected.

4. The general-purpose gear-shafting fixture for long shaft parts as described in claim 3, characterized in that, The first mounting hole (22) includes a cylindrical hole (221) and a frustum-shaped hole (222) that are coaxially connected. The expansion sleeve (5) includes a first connecting section (51), a cylindrical section (52), a second connecting section (53), and a frustum section (54) that are integrally connected. The first connecting section (51) extends into the mounting cavity (11), and the cylindrical section (52) and the second connecting section (53) are both inserted into the cylindrical hole (221). The frustum section (54) is disposed in the frustum hole (222), and the upper end of the frustum section (54) abuts against the limiting step (4).

5. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, The connector (1) is connected to the expansion sleeve (5) by a first screw (6).

6. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, The main body (2) and the positioning support (3) are connected by a second screw (7).

7. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, The lower end of the main body (2) has a connecting plate (21) protruding outward, and a handle (9) is provided on the upper surface of the connecting plate.

8. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, The expansion sleeve (5) has an external thread along the circumferential direction on its outer wall, and the mounting cavity (11) has an internal thread along the circumferential direction that matches the external thread.

9. The general-purpose gear-shafting fixture for long shaft parts as described in claim 1, characterized in that, Multiple radial limiting holes are opened on the body (2) along the circumference, and limiting bolts (8) that can limit the rotation of the expansion sleeve (5) are inserted in the radial limiting holes.

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