Machining clamp for thin-wall round pipe and cylinder parts

Abstract

The utility model discloses a processing fixture for thin-wall circular tube and cylinder parts, which comprises a first arc-shaped clamping jaw, a second arc-shaped clamping jaw and a third arc-shaped clamping jaw, the first arc-shaped clamping jaw is arranged on the first clamping jaw, the second arc-shaped clamping jaw is arranged on the second clamping jaw, the third arc-shaped clamping jaw is arranged on the third clamping jaw, and the third arc-shaped clamping jaw is arranged on the third clamping jaw. The first clamping jaw, the second clamping jaw and the third clamping jaw synchronously move on the chuck through a synchronous driving structure, every two of the first arc-shaped clamping jaw, the second arc-shaped clamping jaw and the third arc-shaped clamping jaw are connected in a clamped mode through a hoop structure, and the first arc-shaped clamping jaw, the second arc-shaped clamping jaw and the third arc-shaped clamping jaw can be spliced into a complete cylinder. By means of the thin-wall circular tube and cylinder part clamping device, in the thin-wall circular tube and cylinder part machining process, directional stress deformation of a thin-wall circular tube and cylinder part caused by uneven clamping force can be prevented, and the machining precision of the thin-wall circular tube and cylinder part is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal parts processing, and in particular relates to a processing fixture for thin-walled round tubes and cylindrical parts. Background Art

[0002] When processing thin-walled round tubes and cylindrical parts, they are generally clamped and fixed using a chuck fixture, and then processed on a lathe or grinder.

[0003] When the current chuck fixture clamps and fixes thin-walled circular tubes and cylindrical parts, its claws cannot embrace and clamp the outer surface or inner surface of the thin-walled circular tubes and cylindrical parts. During the processing, due to uneven force on the thin-walled circular tubes and cylindrical parts, stress deformation is easily caused to the thin-walled circular tubes and cylindrical parts, affecting the processing accuracy of the thin-walled circular tubes and cylindrical parts. For this reason, we propose a processing fixture for thin-walled circular tubes and cylindrical parts. Utility Model Content

[0004] The purpose of the utility model is to provide a processing fixture for thin-walled circular tubes and cylindrical parts, so as to solve the problem proposed in the above background technology that the current chuck fixture cannot clamp the outer surface or inner surface of the thin-walled circular tube and cylindrical parts when clamping and fixing the thin-walled circular tube and cylindrical parts. During the processing, due to uneven force on the thin-walled circular tube and cylindrical parts, stress deformation of the thin-walled circular tube and cylindrical parts is easily caused, thereby affecting the processing accuracy of the thin-walled circular tube and cylindrical parts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a processing fixture for thin-walled circular tubes and cylindrical parts, comprising a first arc-shaped jaw, a second arc-shaped jaw and a third arc-shaped jaw, the first arc-shaped jaw is arranged on the first jaw, the second arc-shaped jaw is arranged on the second jaw, and the third arc-shaped jaw is arranged on the third jaw, the first jaw, the second jaw and the third jaw move synchronously on the chuck through a synchronous driving structure, the first arc-shaped jaw, the second arc-shaped jaw and the third arc-shaped jaw are clamped in pairs through a clamp structure, and the first arc-shaped jaw, the second arc-shaped jaw and the third arc-shaped jaw can be spliced ​​into a complete cylinder.

[0006] Preferably, the clamp structure includes main clamping teeth and main clamping grooves, the main clamping teeth are respectively arranged on one side of the first arc-shaped jaw, the second arc-shaped jaw and the third arc-shaped jaw, the main clamping teeth are clamped in the main clamping grooves, and the main clamping grooves are arranged on the other side of the first arc-shaped jaw, the second arc-shaped jaw and the third arc-shaped jaw, and the main clamping teeth are clamped in the main clamping grooves. Through the matching clamping teeth of the main clamping teeth and the main clamping grooves, thin-walled circular tubes and cylindrical parts can be clamped or supported in an embracing manner, which can prevent stress deformation of thin-walled circular tubes and cylindrical parts during processing, thereby ensuring their processing accuracy.

[0007] Preferably, auxiliary teeth are provided on the first arc-shaped jaw, the second arc-shaped jaw and the third arc-shaped jaw on both sides of the main clamping groove, and one end of the auxiliary teeth is clamped in the auxiliary clamping groove. The auxiliary clamping groove is provided on the first arc-shaped jaw, the second arc-shaped jaw and the third arc-shaped jaw on both sides of the main clamping teeth, so as to further improve the clamping effect on thin-walled round tubes and cylindrical parts.

[0008] Preferably, the synchronous drive structure includes a carrying turntable, which is rotatably arranged in a chuck. The chuck is also provided with an adjustment component for controlling the rotation of the carrying turntable. The rotation of the carrying turntable can drive the first claw, the second claw and the third claw to move synchronously.

[0009] Preferably, the adjustment assembly includes a driving gear, the driving gear is meshed with a transmission gear ring, and the transmission gear ring is arranged on one side of the supporting turntable and can control the rotation direction of the supporting turntable.

[0010] Preferably, an adjusting knob is also provided on the driving gear, and the adjusting knob extends to the outer surface of the chuck, and can control the rotation direction of the driving gear, and further control the rotation direction of the supporting turntable.

[0011] Preferably, a spiral groove is also provided on the surface of the carrying turntable, and the spiral groove is meshed with a spiral tooth. The spiral tooth is provided on a slider, and the slider is provided on the first claw, the second claw and the third claw respectively, so as to synchronously control the movement of the slider, and further control the movement of the first claw, the second claw and the third claw.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model drives the first arc-shaped clamping jaw, the second arc-shaped clamping jaw and the third arc-shaped clamping jaw to move synchronously through the synchronous movement of the first clamping jaw, the second clamping jaw and the third clamping jaw, and then can clamp or support the thin-walled circular tube and cylindrical parts in an embracing manner through the clamp structure, and can prevent the directional stress deformation of the thin-walled circular tube and cylindrical parts due to uneven clamping force during the processing of the thin-walled circular tube and cylindrical parts, thereby ensuring the processing accuracy of the thin-walled circular tube and cylindrical parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the hoop structure in the utility model;

[0018] Figure 5 It is a partial half-section structural schematic diagram of the synchronous drive structure in the utility model;

[0019] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 7 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0021] In the figure: 1, first clamping jaw; 2, first arc-shaped clamping jaw; 3, second clamping jaw; 4, second arc-shaped clamping jaw; 5, third arc-shaped clamping jaw; 6, third clamping jaw; 7, chuck; 21, main clamping groove; 22, main clamping tooth; 23, auxiliary clamping tooth; 24, auxiliary clamping groove; 71, transmission gear ring; 72, bearing turntable; 73, spiral groove; 74, adjustment knob; 75, driving gear; 76, spiral tooth; 77, slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4The utility model provides a technical solution: a processing fixture for thin-walled round tubes and cylindrical parts, comprising a first arc-shaped jaw 2, a second arc-shaped jaw 4 and a third arc-shaped jaw 5, the first arc-shaped jaw 2 is arranged on the first clamping jaw 1, the second arc-shaped jaw 4 is arranged on the second clamping jaw 3, and the third arc-shaped jaw 5 is arranged on the third clamping jaw 6, the first clamping jaw 1, the second clamping jaw 3 and the third clamping jaw 6 are synchronously moved on the chuck 7 through a synchronous driving structure, the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 are clamped in pairs through a hoop structure, and the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 can be spliced ​​into a complete cylinder.

[0024] The clamp structure includes a main clamping tooth 22 and a main clamping groove 21. The main clamping tooth 22 is respectively arranged on one side of the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5, and the main clamping tooth 22 is clamped in the main clamping groove 21. The main clamping groove 21 is arranged on the other side of the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5. The main clamping tooth 22 is clamped in the main clamping groove 21. Through the matching clamping teeth of the main clamping tooth 22 and the main clamping groove 21, thin-walled circular tubes and cylindrical parts can be clamped or supported in an embracing manner, which can prevent stress deformation of thin-walled circular tubes and cylindrical parts during processing, thereby ensuring their processing accuracy.

[0025] When thin-walled circular tubes and cylindrical parts need to be processed, the thin-walled circular tubes and cylindrical parts are placed in the middle of the chuck 7, and then the first jaw 1, the second jaw 3 and the third jaw 6 are driven to move at the same time through the synchronous driving structure, and the first jaw 1, the second jaw 3 and the third jaw 6 simultaneously drive the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 to move. When the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 are in contact with the outer surface of the thin-walled circular tube and cylindrical parts, the main clamping tooth 22 is inserted into the main clamping groove 21. Through the cooperation of the main clamping tooth 22 and the main clamping groove 21, the thin-walled circular tube and cylindrical parts can be clamped and fixed in an embracing manner. When the thin-walled circular tube and cylindrical parts are processed, there will be no uneven clamping force at the clamping position, and stress deformation will not be caused at the clamping position of the thin-walled circular tube and cylindrical parts during the processing, thereby greatly improving the processing accuracy of the thin-walled circular tube and cylindrical parts.

[0026] Similarly, the present application can also support the inner wall of thin-walled circular tube components and process the outer surface of thin-walled circular tube components, thereby ensuring the overall processing accuracy of thin-walled circular tube components.

[0027] Furthermore, auxiliary teeth 23 are provided on the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 on both sides of the main clamping groove 21, and one end of the auxiliary teeth 23 is clamped in the auxiliary clamping groove 24. The auxiliary clamping groove 24 is provided on the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 on both sides of the main clamping tooth 22. When the first arc-shaped jaw 2, the second arc-shaped jaw 4 and the third arc-shaped jaw 5 are clamping, the auxiliary teeth 23 can be clamped in the auxiliary clamping groove 24, which can further improve the clamping effect of thin-walled circular tubes and cylindrical parts, and can further improve the clamping accuracy of thin-walled circular tubes and cylindrical parts.

[0028] Specifically, the main slot 21, the main latch teeth 22, the auxiliary latch teeth 23 and the auxiliary slot 24 in the present application can be provided in multiple groups, and can be provided according to the specifications of the processed parts.

[0029] As a specific embodiment of this application, please refer to Figure 5-Figure 7 The synchronous drive structure includes a bearing turntable 72, which is rotatably arranged in the chuck 7. The chuck 7 is also provided with an adjustment component for controlling the rotation of the bearing turntable 72. The rotation of the bearing turntable 72 can drive the first clamping claw 1, the second clamping claw 3 and the third clamping claw 6 to move synchronously. The adjustment component includes a driving gear 75, which is meshed with a transmission gear ring 71. The transmission gear ring 71 is arranged on one side of the bearing turntable 72 and can control the rotation direction of the bearing turntable 72. An adjustment knob 74 is also provided on the driving gear 75, and the adjustment knob 74 extends to The outer surface of the chuck 7 can control the rotation direction of the driving gear 75, thereby controlling the rotation direction of the carrying turntable 72. A spiral groove 73 is also provided on the surface of the carrying turntable 72, and the spiral groove 73 is meshed with a spiral tooth 76. The spiral tooth 76 is provided on a slider 77. The slider 77 is respectively provided on the first clamping jaw 1, the second clamping jaw 3 and the third clamping jaw 6. Specifically, the slider 77 is a T-shaped structure. The slider 77 is slidably provided on the chuck 7, and can synchronously control the movement of the slider 77, thereby controlling the movement of the first clamping jaw 1, the second clamping jaw 3 and the third clamping jaw 6.

[0030] The driving gear 75 is driven to rotate by adjusting the knob 74, and the driving gear 75 drives the transmission ring gear 71 to rotate, and the transmission ring gear 71 drives the bearing turntable 72 to rotate, and the bearing turntable 72 drives the spiral groove 73 to rotate, and the rotation of the spiral groove 73 drives the spiral teeth 76 to move, and the spiral teeth 76 move the slider 77 to move, and then the slider 77 synchronously drives the first clamping jaw 1, the second clamping jaw 3 and the third clamping jaw 6 to move, and the first clamping jaw 1, the second clamping jaw 3 and the third clamping jaw 6 synchronously drive the first arc-shaped clamping jaw 2, the second arc-shaped clamping jaw 4 and the third arc-shaped clamping jaw 5 to move synchronously, and clamp and fix the thin-walled circular tube and cylindrical parts.

[0031] The chuck 7 in the present application is not limited to a three-jaw chuck, but may also be a hydraulic chuck or a pneumatic chuck.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing fixture for thin-walled round tubes and cylindrical parts, characterized in that: The invention comprises a first arc-shaped clamping jaw (2), a second arc-shaped clamping jaw (4) and a third arc-shaped clamping jaw (5); the first arc-shaped clamping jaw (2) is arranged on a first clamping jaw (1); the second arc-shaped clamping jaw (4) is arranged on a second clamping jaw (3); the third arc-shaped clamping jaw (5) is arranged on a third clamping jaw (6); the first clamping jaw (1), the second clamping jaw (3) and the third clamping jaw (6) move synchronously on a chuck (7) through a synchronous driving structure; the first arc-shaped clamping jaw (2), the second arc-shaped clamping jaw (4) and the third arc-shaped clamping jaw (5) are clamped in pairs through a clamping hoop structure; the first arc-shaped clamping jaw (2), the second arc-shaped clamping jaw (4) and the third arc-shaped clamping jaw (5) can be spliced ​​into a complete cylinder.

2. A processing fixture for thin-walled round tubes and cylindrical parts according to claim 1, characterized in that: The clamp structure comprises a main clamping tooth (22) and a main clamping groove (21); the main clamping tooth (22) is respectively arranged on one side of the first arc-shaped clamping jaw (2), the second arc-shaped clamping jaw (4) and the third arc-shaped clamping jaw (5); the main clamping tooth (22) is clamped in the main clamping groove (21); the main clamping groove (21) is arranged on the other side of the first arc-shaped clamping jaw (2), the second arc-shaped clamping jaw (4) and the third arc-shaped clamping jaw (5); the main clamping tooth (22) is clamped in the main clamping groove (21).

3. A processing fixture for thin-walled round tubes and cylindrical parts according to claim 2, characterized in that: Auxiliary clamping teeth (23) are arranged on the first arc-shaped clamping jaw (2), the second arc-shaped clamping jaw (4) and the third arc-shaped clamping jaw (5) on both sides of the main clamping groove (21); one end of the auxiliary clamping teeth (23) is clamped in the auxiliary clamping groove (24); and the auxiliary clamping groove (24) is arranged on the first arc-shaped clamping jaw (2), the second arc-shaped clamping jaw (4) and the third arc-shaped clamping jaw (5) on both sides of the main clamping teeth (22).

4. A processing fixture for thin-walled round tubes and cylindrical parts according to claim 1, characterized in that: The synchronous driving structure comprises a bearing turntable (72), wherein the bearing turntable (72) is rotatably arranged in a chuck (7), and the chuck (7) is further provided with an adjustment component for controlling the rotation of the bearing turntable (72). The rotation of the bearing turntable (72) can drive the first clamping claw (1), the second clamping claw (3) and the third clamping claw (6) to move synchronously.

5. A processing fixture for thin-walled round tubes and cylindrical parts according to claim 4, characterized in that: The adjustment assembly comprises a driving gear (75), the driving gear (75) meshing with a transmission gear ring (71), and the transmission gear ring (71) is arranged on one side of the bearing turntable (72).

6. A processing fixture for thin-walled round tubes and cylindrical parts according to claim 5, characterized in that: The driving gear (75) is also provided with an adjusting knob (74), and the adjusting knob (74) extends to the outer surface of the chuck (7).

7. A processing fixture for thin-walled round tubes and cylindrical parts according to claim 4, characterized in that: The surface of the bearing turntable (72) is also provided with a spiral groove (73), the spiral groove (73) meshes with a spiral tooth (76), the spiral tooth (76) is provided on a slider (77), and the slider (77) is respectively provided on the first clamping claw (1), the second clamping claw (3) and the third clamping claw (6).

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