Split type clamp for precise turning of rotary body part

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a split type clamp for precise turning of a rotary body part. The rotor comprises a rotor shell, a pull rod is arranged in the rotor shell, and a connecting blank cap is fixed on the pull rod. In the use process, the pull rod is fixedly connected with the blank cap and is matched with the clamp body to form the clamping cavity for clamping a rotary body part for next turning, and the positioning seat is used for positioning the clamp body and a rotor shell, so that the clamp body is prevented from position deviation during installation; the elastic buffering assembly can play a certain axial elastic buffering role on the clamp body, the stability of clamping force is kept, meanwhile, the whole clamp is of a split structure, follow-up maintenance and replacement are convenient, the use cost is reduced, and practicability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps and relates to a split clamp used for precision turning of rotating body parts. Background Art

[0002] When turning a rotating part, it is necessary to use a fixture to clamp the rotating part before turning. Existing rotating part fixtures generally use an integrated fixture, which lacks a corresponding axial elastic buffer structure when clamping parts. The clamping stability is relatively general. At the same time, once the fixture is damaged, it needs to be replaced as a whole, which is troublesome to repair and has a high cost. Therefore, it is urgent to design a split fixture for precision turning of rotating parts that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a rotating part processing fixture [application number: 201710109481.3], which includes a base, a V-block fixed on the base, a pressure plate on the upper part of the V-block, and the pressure plate is fixedly connected to the V-block through a pull rod and a positioning rod. Utility Model Content

[0004] The utility model aims to solve the above problems and provide a split fixture for precision turning of rotating parts.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A split fixture for precision turning of rotating parts includes a rotor shell, a pull rod is provided inside the rotor shell, a connecting cover is fixed on the pull rod, a fixture body is provided on the rotor shell, the pull rod passes through the fixture body, a positioning seat is provided between the fixture body and the rotor shell, an elastic buffer component is provided between the pull rod and the rotor shell, and a clamping cavity is formed between the connecting cover and the fixture body.

[0007] In the above-mentioned split fixture for precision turning of rotating parts, the elastic buffer assembly includes a lower cone arranged between the pull rod and the rotor housing, a lower fixed seat is provided on the lower cone, the lower fixed seat is abutted against the positioning seat, and an elastic block is provided between the lower cone and the lower fixed seat.

[0008] In the above-mentioned split fixture for precision turning of rotating parts, a rotor insert is provided at the inner wall of the rotor housing, and an abutment piece is provided between the rotor insert and the lower cone.

[0009] In the above-mentioned split fixture for precision turning of rotating parts, the abutment member includes an expansion sleeve arranged between the rotor insert and the lower cone, the outer wall of the expansion sleeve is in close contact with the inner wall of the rotor insert, and the inner wall of the expansion sleeve is in close contact with the outer wall of the lower cone.

[0010] In the above-mentioned split fixture for precision turning of rotating parts, a center alignment piece is provided between the lower cone and the pull rod.

[0011] In the above-mentioned split fixture for precision turning of rotating parts, the center alignment member includes a core expansion sleeve arranged between the lower cone and the pull rod, the core expansion sleeve is in the shape of a hollow cylinder, and the pull rod passes through the core expansion sleeve.

[0012] In the above-mentioned split fixture for precision turning of rotating parts, a limiting connecting piece is provided on the core expansion sleeve, and the limiting connecting piece is staggered with the lower cone.

[0013] In the above-mentioned split fixture for precision turning of rotating parts, the limiting connecting member includes a retaining ring arranged on the core expanding sleeve, and the retaining ring and the core expanding sleeve are fixed by a plurality of limiting heads.

[0014] In the above-mentioned split fixture for precision turning of rotating body parts, a transition block is provided on the fixture body, and the transition block and the connecting cover are arranged alternately.

[0015] In the above-mentioned split fixture for precision turning of rotating parts, the transition block is provided with a plurality of bolt holes distributed in a circular array along the center point of the transition block.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. During the use of the utility model, the pull rod is fixedly connected to the blind cover, and cooperates with the clamp body to form a clamping cavity for clamping the rotating body parts for the next step of turning. The positioning seat is used to position the clamp body and the rotor housing to avoid position displacement of the clamp body during installation. The elastic buffer component can play a certain axial elastic buffering role on the clamp body to maintain the stability of the clamping force. At the same time, the entire clamp adopts a split structure, which is convenient for subsequent maintenance and replacement, reducing the cost of use and improving practicality.

[0018] 2. The expansion sleeve in the utility model is used to fix the bottom of the pull rod in position to prevent the bottom of the pull rod from shifting during use.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a partial structural schematic diagram of the utility model.

[0022] Figure 3 It is a partial structural schematic diagram of the utility model in another direction.

[0023] Figure 4 It is a partial structural schematic diagram of the utility model in another direction.

[0024] In the figure: rotor housing 1, pull rod 2, connecting cover 3, fixture body 4, positioning seat 5, elastic buffer assembly 6, lower cone 7, lower fixed seat 8, elastic block 9, rotor insert 10, abutment 11, expansion sleeve 12, center alignment piece 13, core expansion sleeve 14, limit connector 15, retaining ring 16, limit head 17, transition block 18, bolt hole 19. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-4 As shown, a split fixture for precision turning of rotating parts includes a rotor shell 1, a pull rod 2 is provided inside the rotor shell 1, a connecting cover 3 is fixed on the pull rod 2, a fixture body 4 is provided on the rotor shell 1, the pull rod 2 passes through the fixture body 4, a positioning seat 5 is provided between the fixture body 4 and the rotor shell 1, an elastic buffer component 6 is provided between the pull rod 2 and the rotor shell 1, and a clamping cavity is formed between the connecting cover 3 and the fixture body 4.

[0027] In this embodiment, during use, the pull rod 2 is fixedly connected to the blind cover 3, and cooperates with the clamp body 4 to form a clamping cavity for clamping the rotating body part for the next turning step. The positioning seat 5 is used to position the clamp body 4 and the rotor housing 1 to avoid position displacement of the clamp body 4 during installation. The elastic buffer component 6 can play a certain axial elastic buffering role on the clamp body 4 to maintain the stability of the clamping force. At the same time, the entire clamp adopts a split structure, which is convenient for subsequent maintenance and replacement, reducing the cost of use and improving practicality.

[0028] Combination Figure 1-4 As shown, the elastic buffer assembly 6 includes a lower cone 7 arranged between the pull rod 2 and the rotor housing 1, a lower fixing seat 8 is provided on the lower cone 7, the lower fixing seat 8 is abutted against the positioning seat 5, and an elastic block 9 is provided between the lower cone 7 and the lower fixing seat 8.

[0029] Specifically, through the cooperation between the lower cone 7, the lower fixed seat 8 and the elastic block 9, a certain axial elastic buffering effect is exerted on the clamp body 4 to maintain the stability of the clamping force. At the same time, the entire clamp adopts a split structure, which makes subsequent maintenance and replacement more convenient, reduces the cost of use, and improves practicality. Each component can be replaced individually.

[0030] A rotor insert 10 is disposed on the inner wall of the rotor housing 1 , and an abutment member 11 is disposed between the rotor insert 10 and the lower cone 7 .

[0031] In this embodiment, the rotor insert 10 plays the role of internal embedding and fixing, and the abutment member 11 abuts and fixes the outer side of the lower cone 7.

[0032] Combination Figure 2 , Figure 3 As shown, the abutment member 11 includes an expansion sleeve 12 disposed between the rotor insert 10 and the lower cone 7 , the outer wall of the expansion sleeve 12 is in close contact with the inner wall of the rotor insert 10 , and the inner wall of the expansion sleeve 12 is in close contact with the outer wall of the lower cone 7 .

[0033] In this embodiment, the expansion sleeve 12 can abut and fix the outer side of the lower cone 7.

[0034] A center alignment member 13 is provided between the lower cone 7 and the pull rod 2 .

[0035] In this embodiment, the central aligning member 13 is used to align and fix the bottom of the pull rod 2 to prevent the bottom of the pull rod 2 from shifting during use.

[0036] Combination Figure 2-4 As shown, the central aligning member 13 includes an expanding sleeve 14 disposed between the lower cone 7 and the pull rod 2 . The expanding sleeve 14 is in a hollow cylindrical shape, and the pull rod 2 passes through the expanding sleeve 14 .

[0037] In this embodiment, the core expansion sleeve 14 is used to align and fix the bottom of the pull rod 2 to prevent the bottom of the pull rod 2 from shifting during use.

[0038] The core expansion sleeve 14 is provided with a limiting connection piece 15 , and the limiting connection piece 15 and the lower cone 7 are arranged alternately.

[0039] In this embodiment, the limiting connector 15 fills the gap between the core expansion sleeve 14 and the lower cone 7 to ensure the tightness of the assembly.

[0040] Combination Figure 1-4 As shown, the limiting connector 15 includes a retaining ring 16 disposed on the core expansion sleeve 14 , and the retaining ring 16 and the core expansion sleeve 14 are fixed via a plurality of limiting heads 17 .

[0041] In this embodiment, the retaining ring 16 fills the gap between the core expansion sleeve 14 and the lower cone 7 to ensure the tightness of the assembly. The retaining ring 16 and the core expansion sleeve 14 are fixed by a plurality of limit heads 17 to facilitate subsequent disassembly and assembly.

[0042] Combination Figure 1 As shown, the fixture body 4 is provided with a transition block 18 , and the transition block 18 and the connecting cover 3 are arranged alternately.

[0043] In this embodiment, the transition block 18 cooperates with the connection cover 3 to better clamp the workpiece.

[0044] Combination Figure 1 As shown, the transition block 18 is provided with a plurality of bolt holes 19 distributed in a circular array along the center point of the transition block 18 .

[0045] In this embodiment, the bolt holes 19 are used in conjunction with bolts to fix the transition block 18 .

[0046] The working principle of the utility model is:

[0047] During use, the pull rod 2 is fixedly connected to the cover 3, and cooperates with the clamp body 4 to form a clamping cavity for clamping the rotating body parts for the next turning step. The positioning seat 5 is used to position the clamp body 4 and the rotor housing 1 to avoid position displacement of the clamp body 4 during installation. Through the cooperation between the lower cone 7 and the lower fixed seat 8 and the elastic block 9, a certain axial elastic buffering effect is played on the clamp body 4 to maintain the stability of the clamping force. At the same time, the entire clamp adopts a split structure, which is convenient for subsequent maintenance and replacement, reducing the cost of use and improving practicality. Each component can be replaced separately. The expansion sleeve 12 can abut and fix the outer side of the lower cone 7. The expansion sleeve 14 is used to fix the bottom of the pull rod 2 to prevent the bottom of the pull rod 2 from shifting during use. The retaining ring 16 fills the gap between the expansion sleeve 14 and the lower cone 7 to ensure the tightness of the assembly. The retaining ring 16 and the expansion sleeve 14 are fixed by a number of limit heads 17 to facilitate subsequent disassembly and assembly. The transition block 18 cooperates with the connecting cover 3 to better clamp the workpiece, and the bolt hole 19 cooperates with the bolt to fix the transition block 18.

[0048] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0049] Although this article uses more terms such as rotor housing 1, tie rod 2, connecting cover 3, fixture body 4, positioning seat 5, elastic buffer assembly 6, lower cone 7, lower fixing seat 8, elastic block 9, rotor insert 10, abutment 11, expansion sleeve 12, center alignment member 13, expansion sleeve 14, limit connector 15, retaining ring 16, limit head 17, transition block 18, bolt hole 19, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A split fixture for precision turning of rotating parts, comprising a rotor housing (1), characterized in that: A pull rod (2) is provided inside the rotor housing (1), a connecting cover (3) is fixed on the pull rod (2), a clamp body (4) is provided on the rotor housing (1), the pull rod (2) passes through the clamp body (4), a positioning seat (5) is provided between the clamp body (4) and the rotor housing (1), an elastic buffer component (6) is provided between the pull rod (2) and the rotor housing (1), and a clamping cavity is formed between the connecting cover (3) and the clamp body (4).

2. The split fixture for precision turning of rotating parts according to claim 1 is characterized in that: The elastic buffer assembly (6) comprises a lower cone (7) arranged between the pull rod (2) and the rotor housing (1), a lower fixing seat (8) is provided on the lower cone (7), the lower fixing seat (8) is in abutment with the positioning seat (5), and an elastic block (9) is provided between the lower cone (7) and the lower fixing seat (8).

3. The split fixture for precision turning of rotating parts according to claim 2 is characterized in that: A rotor insert (10) is provided on the inner wall of the rotor housing (1), and an abutment piece (11) is provided between the rotor insert (10) and the lower cone (7).

4. The split fixture for precision turning of rotating parts according to claim 3 is characterized in that: The abutment member (11) comprises an expansion sleeve (12) arranged between the rotor insert (10) and the lower cone (7), the outer wall of the expansion sleeve (12) being in close contact with the inner wall of the rotor insert (10), and the inner wall of the expansion sleeve (12) being in close contact with the outer wall of the lower cone (7).

5. The split fixture for precision turning of rotating parts according to claim 4 is characterized in that: A center alignment piece (13) is provided between the lower cone (7) and the pull rod (2).

6. The split fixture for precision turning of rotating parts according to claim 5 is characterized in that: The central aligning member (13) comprises an expanding sleeve (14) arranged between the lower cone (7) and the pull rod (2); the expanding sleeve (14) is in the shape of a hollow cylinder, and the pull rod (2) passes through the expanding sleeve (14).

7. The split fixture for precision turning of rotating parts according to claim 6 is characterized in that: The core expansion sleeve (14) is provided with a position-limiting connecting piece (15), and the position-limiting connecting piece (15) and the lower cone (7) are arranged alternately.

8. The split fixture for precision turning of rotating parts according to claim 7 is characterized in that: The limiting connection piece (15) comprises a retaining ring (16) arranged on the core expansion sleeve (14); the retaining ring (16) and the core expansion sleeve (14) are fixed via a plurality of limiting heads (17).

9. The split fixture for precision turning of rotating parts according to claim 8, characterized in that: The clamp body (4) is provided with a transition block (18), and the transition block (18) and the connecting cover (3) are arranged alternately.

10. The split fixture for precision turning of rotating parts according to claim 9, characterized in that: The transition block (18) is provided with a plurality of bolt holes (19) distributed in a circular array along the center point of the transition block (18).

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