Adjustable part clamping mechanism

Abstract

The utility model relates to an adjustable clamping mechanism for parts. Comprising a base, a supporting plate used for supporting parts, a rotating block arranged at the bottom of the supporting plate, a limiting seat used for limiting rotation of the rotating block, an inner gear arranged on the outer edge of the inner side of the base, a rotating device used for driving the rotating block to rotate and an abutting piece used for fixing the parts. The supporting plate is provided with four sets of abutting pieces which are arranged in a circumferential array mode. The rotating block is rotationally connected to the limiting seat; the limiting seat is arranged on the base; the rotating device is installed on the rotating block and connected to the inner gear in an engaged mode. The problems that in the prior art, clamps mostly adopt a single locking mode (such as thread screwing or pneumatic driving), position fine adjustment in the machining process is difficult to achieve after clamping, in the scene of special-shaped parts needing multi-procedure machining, an operator needs to repeatedly disassemble and reassemble a workpiece to adjust the machining face, and the machining efficiency is low are solved. The accumulated error is increased, and the processing efficiency is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping mechanism field, especially a kind of adjustable clamping mechanism for parts. BACKGROUND

[0002] Mechanical parts as the core unit of constituting mechanical equipment, its machining precision and assembly quality directly affect the whole machine performance and service life.In the field of mechanical manufacturing, various parts need to be accurately positioned and fixed through clamping mechanism in turning, milling, drilling, welding and other machining processes.The traditional clamping device (such as vice, three-jaw chuck, pneumatic clamp, etc.) can meet the basic fixing needs, but gradually exposes significant limitations in complex processing scenarios.

[0003] Conventional clamps mostly adopt single locking mode (such as threaded tightening or air pressure driving), and it is difficult to realize position fine adjustment during machining after clamping.For example, in the scene of special-shaped parts requiring multi-process machining, the operator needs to repeatedly disassemble and reassemble the workpiece to adjust the machining surface, resulting in increased cumulative error and reduced processing efficiency. SUMMARY

[0004] The embodiments of the present application provide a clamping mechanism for adjustable parts, which solves the technical problems that in the prior art, the clamps mostly adopt single locking mode (such as threaded tightening or air pressure driving), and it is difficult to realize position fine adjustment during machining after clamping, and in the scene of special-shaped parts requiring multi-process machining, the operator needs to repeatedly disassemble and reassemble the workpiece to adjust the machining surface, resulting in increased cumulative error and reduced processing efficiency.

[0005] The technical solutions adopted by the embodiments of the present application are as follows:

[0006] A clamping mechanism for adjustable parts, comprising a base, a support plate for supporting parts, a rotating block provided at the bottom of the support plate, a limiting seat for limiting the rotation of the rotating block, an internal gear provided on the inner side of the base, a rotating device for driving the rotating block to rotate, and an abutting piece for fixing parts; The support plate is provided with four groups of abutting pieces arranged in a circumferential array; The rotating block is rotatably connected to the limiting seat; The limiting seat is provided on the base; The rotating device is installed on the rotating block, and the rotating device is engaged with the internal gear.

[0007] Further technical solutions are as follows: the rotating device comprises an outer gear, a first driving device for driving the outer gear to rotate, and a rotating handle arranged on the rotating block; the first driving device is installed at the bottom of the rotating handle; the outer gear is arranged on the output shaft of the first driving device; the outer gear is in meshing connection with the inner gear; when the output shaft of the first driving device drives the outer gear to rotate, the outer gear rolls along the inner tooth surface of the inner gear, and the rotating handle drives the rotating block to rotate.

[0008] Further technical solutions are as follows: the abutting member comprises a fixing seat, a second driving device installed at the top of the supporting plate, a stopper for abutting against a part, and a fixing member for fixing the stopper; the fixing seat is arranged on the driving end of the second driving device; the stopper is detachably fixedly installed on the fixing seat through the fixing member.

[0009] Further technical solutions are as follows: a cross positioning line is arranged at the top center of the supporting plate.

[0010] Further technical solutions are as follows: the first driving device is a servo motor; and the second driving device is a pneumatic cylinder.

[0011] Further technical solutions are as follows: the fixing member is a bolt.

[0012] Further technical solutions are as follows: the end of the stopper is provided with a rubber pad.

[0013] One or more technical solutions provided in the embodiments of the application have at least the following technical effects or advantages:

[0014] 1. Due to the arrangement of the base, the supporting plate, the rotating block, the limiting seat, the inner gear, the rotating device and the abutting member, the mechanism can realize 360° accurate rotation adjustment of the supporting plate through meshing transmission of the inner gear and the outer gear, combined with servo motor driving, can quickly align the machining reference with the cross positioning line, significantly reduces the disassembly and reassembly times of the workpiece, and reduces the cumulative error. The four groups of abutting members driven by the pneumatic cylinders can be independently controlled, the horizontal position of the stopper is adjusted to adapt to parts of different sizes and shapes, the stopper can be detachably replaced, and the versatility of the clamp is improved. The rubber pad can protect the surface of the workpiece and enhance the clamping friction force. The overall structure has high integration degree, supports multi-degree-of-freedom fine adjustment in the machining process, and is especially suitable for multi-process machining of special-shaped parts. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the adjustable part clamping mechanism.

[0016] Figure 2Part structure diagram for reflecting the rotating device in the embodiment of the utility model.

[0017] Figure 3 Part structure diagram for reflecting the abutting piece in the embodiment of the utility model.

[0018] In the drawing: 1, base; 2, support plate; 3, rotating block; 4, limiting seat; 5, inner gear; 6, rotating device; 61, outer gear; 62, first driving device; 63, rotating handle; 7, abutting piece; 71, fixed seat; 72, second driving device; 73, stop block; 74, fixing piece. DETAILED DESCRIPTION

[0019] The adjustable part clamping mechanism provided in the embodiment of the application solves the technical problems in the prior art that the clamps in the prior art solution are mostly single locking modes (such as threaded tightening or air pressure driving), it is difficult to realize position fine adjustment in the machining process after clamping, and in the scene of special-shaped parts requiring multi-process machining, the operator needs to repeatedly disassemble and reassemble the workpiece to adjust the machining surface, resulting in increased cumulative error and reduced machining efficiency.

[0020] The technical solution in the embodiment of the application is as follows to solve the above problems:

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0022] An adjustable part clamping mechanism, as shown in Figure 1 , Figure 2 and Figure 3 , includes a base 1, a support plate 2 for supporting parts, a rotating block 3 arranged at the bottom of the support plate 2, a limiting seat 4 for limiting the rotation of the rotating block 3, an inner gear 5 arranged on the inner side of the base 1, a rotating device 6 for driving the rotating block 3 to rotate, and an abutting piece 7 for fixing the parts. The support plate 2 is provided with four groups of abutting pieces 7 arranged in a circumferential array. The rotating block 3 is rotatably connected to the limiting seat 4. The limiting seat 4 is arranged on the base 1. The rotating device 6 is installed on the rotating block 3, and the rotating device 6 is meshingly connected to the inner gear 5.

[0023] The rotating device 6 includes an outer gear 61, a first driving device 62 for driving the outer gear 61 to rotate, and a rotating handle 63 arranged on the rotating block 3. The first driving device 62 is installed at the bottom of the rotating handle 63. The outer gear 61 is arranged on the output shaft of the first driving device 62. The outer gear 61 is meshingly connected to the inner gear 5. When the output shaft of the first driving device 62 drives the outer gear 61 to rotate, the outer gear 61 will roll along the inner tooth surface of the inner gear 5, and the rotating handle 63 will drive the rotating block 3 to rotate.

[0024] The abutting member 7 comprises a fixing seat 71, a second driving device 72 installed on the top of the support plate 2, a stopper 73 for abutting the parts, and a fixing member 74 for fixing the stopper 73. The fixing seat 71 is arranged on the driving end of the second driving device 72. The stopper 73 is detachably fixed on the fixing seat 71 by the fixing member 74.

[0025] A cross positioning line is arranged at the center of the top of the support plate 2.

[0026] The first driving device 62 is a servo motor. The second driving device 72 is a pneumatic cylinder.

[0027] The fixing member 74 is a bolt.

[0028] The end of the stopper 73 is provided with a rubber pad.

[0029] An annular internal gear 5 is arranged inside the base 1. The limiting seat 4 is fixed on the base 1. The rotating block 3 is rotatably connected with the limiting seat 4 through a bearing. The support plate 2 is fixed on the top of the rotating block 3. A cross positioning line is arranged at the center of the top of the support plate 2. Four groups of abutting members 7 are distributed in a circumferential array with the cross positioning line as the center. The rotating device 6 comprises an external gear 61, a servo motor 62 and a rotating handle 63. The servo motor 62 is installed at the bottom of the rotating handle 63. The output shaft of the servo motor 62 is connected with the external gear 61. The external gear 61 is engaged with the internal gear 5. When the servo motor 62 is started, the external gear 61 rolls along the internal teeth of the internal gear 5, drives the rotating handle 63 and the rotating block 3 to rotate, and then the circumferential angle adjustment of the support plate 2 is realized. Each group of abutting members 7 comprises a fixing seat 71, a pneumatic cylinder 72, a stopper 73 and a bolt 74. The pneumatic cylinder 72 drives the horizontal movement of the fixing seat 71. The stopper 73 is detachably fixed on the end of the fixing seat 71 through the bolt 74. The contact surface of the stopper 73 is provided with a rubber pad, which is used for flexible clamping of the parts.

[0030] Due to the arrangement of the base 1, the support plate 2, the rotating block 3, the limiting seat 4, the internal gear 5, the rotating device 6 and the abutting member 7, the 360° precise rotation adjustment of the support plate 2 can be realized through the engagement transmission of the internal gear 5 and the external gear 61 combined with the driving of the servo motor 62. The machining reference is quickly aligned with the cross positioning line. The number of workpiece disassembly and reassembly is significantly reduced, and the cumulative error is reduced. The four groups of abutting members 7 driven by the pneumatic cylinders 72 can be independently controlled. The horizontal position of the stopper 73 is adjusted to adapt to different sizes and shapes of parts. The stopper 73 can be replaced, which improves the versatility of the clamp. The rubber pad can protect the surface of the workpiece and enhance the clamping friction. The overall structure has high integration degree, supports multi-freedom fine adjustment in the machining process, and is especially suitable for multi-process machining of special-shaped parts.

[0031] While the preferred embodiments of the application have been described, those skilled in the art will note that various modifications and changes can be made thereto without departing from the spirit and scope of the application. Accordingly, it is intended that all such modifications and changes be included within the scope of the application as claimed.

[0032] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. An adjustable clamping mechanism for parts, characterized in that, The system includes a base (1), a support plate (2) for supporting components, a rotating block (3) disposed at the bottom of the support plate (2), a limiting seat (4) for limiting the rotation of the rotating block (3), an internal gear (5) disposed on the inner side of the base (1), a rotating device (6) for driving the rotating block (3) to rotate, and abutment (7) for fixing components; four sets of abutment (7) arranged in a circumferential array are provided on the support plate (2); the rotating block (3) is rotatably connected to the limiting seat (4); the limiting seat (4) is disposed on the base (1); the rotating device (6) is mounted on the rotating block (3), and the rotating device (6) is meshed with the internal gear (5).

2. The adjustable clamping mechanism for parts as described in claim 1, characterized in that, The rotating device (6) includes an external gear (61), a first driving device (62) for driving the external gear (61) to rotate, and a rotating handle (63) disposed on the rotating block (3); the first driving device (62) is mounted on the bottom of the rotating handle (63); the external gear (61) is disposed on the output shaft of the first driving device (62); the external gear (61) is meshed with the internal gear (5); when the output shaft of the first driving device (62) drives the external gear (61) to rotate, the external gear (61) will roll along the inner tooth surface of the internal gear (5), and the rotating handle (63) will drive the rotating block (3) to rotate.

3. The adjustable clamping mechanism for parts as described in claim 2, characterized in that, The abutment (7) includes a fixed base (71), a second drive device (72) mounted on the top of the support plate (2), a stop (73) for abutting the component, and a fixing member (74) for fixing the stop (73); the fixed base (71) is disposed on the drive end of the second drive device (72); the stop (73) is detachably fixed on the fixed base (71) by the fixing member (74).

4. The adjustable clamping mechanism for parts as described in claim 1, characterized in that, A cross-shaped positioning line is provided at the top center of the support plate (2).

5. An adjustable clamping mechanism for parts as described in claim 3, characterized in that, The first drive device (62) is a servo motor; the second drive device (72) is a cylinder.

6. The adjustable clamping mechanism for parts as described in claim 3, characterized in that, The fastener (74) is a bolt.

7. An adjustable clamping mechanism for parts as described in claim 3, characterized in that, A rubber pad is provided at the end of the stop (73).

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