A clamping device for combined machining of annular thin-walled parts

Abstract

The application discloses a clamping device for combined machining of annular thin-wall parts, which comprises a supporting mechanism, an angular positioning mechanism, a pressing plate mechanism and an assembling mechanism. The supporting mechanism comprises a base and a supporting seat, the supporting seat is in a multi-segment arc structure, and the supporting seat is annularly arranged on the base. The supporting seat is connected with the base through a supporting seat positioning pin and a supporting seat screw. The combined annular thin-wall parts are fixed on the upper end surface of the supporting seat through the pressing plate mechanism, and the annular structure of the lower part of the combined annular thin-wall parts is tightly attached to the inner wall of the supporting seat. The angular positioning mechanism comprises a positioning pin support and an angular positioning pin, and the lower end of the positioning pin support is fixedly connected with the base. The combined annular thin-wall parts are positioned through the supporting mechanism and the angular positioning mechanism, and the outer extension overhang and the opening position of the combined annular thin-wall parts are supported through the assembling mechanism and an auxiliary supporting mechanism. The problems of part cutting deformation and tool setting are solved, so that the machining efficiency of products is effectively improved while the product quality is ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aircraft manufacturing, and particularly relates to a clamping device for combined machining of annular thin-walled parts. BACKGROUND

[0002] On an aircraft engine, in order to achieve the requirement of weight reduction, the wall thickness of mechanical parts is relatively thin, and meanwhile the machining precision of these parts has a relatively high requirement. In the process of high-precision machining, in order to ensure that the size after assembly can meet the precision requirement of the product, the combined machining mode is often used in the size machining of the component, so as to achieve the purpose of ensuring the assembly precision requirement. At present, in the combined machining of thin-walled parts, the machining deformation of the parts is large, and the tool is prone to be let go and the cutting deformation is prone to occur, which becomes the main factor restricting the product quality, and at the same time, this factor also seriously affects the improvement of production efficiency, which is not conducive to the batch production of parts. Therefore, a clamping device for combined machining of annular thin-walled parts is urgently needed, which can fix and support the combined annular thin-walled parts, reduce the deformation amount during machining, and improve the machining precision and efficiency. SUMMARY

[0003] To solve the above technical problems, the present application provides a clamping device for combined machining of annular thin-walled parts, which can solve the problem of large machining deformation of parts in the prior art, and the tool is prone to be let go and the cutting deformation is prone to occur.

[0004] The present application is implemented by the following technical solutions.

[0005] The clamping device for combined machining of annular thin-walled parts provided by the present application comprises a supporting mechanism, an angular positioning mechanism, a pressing plate mechanism and an assembly mechanism. The supporting mechanism comprises a base and a supporting seat, the supporting seat is a multi-segment arc structure, and the supporting seat is installed on the base in a ring shape, the supporting seat and the base are connected through a supporting seat positioning pin and a supporting seat screw, the combined annular thin-walled parts are fixed on the upper end surface of the supporting seat through the pressing plate mechanism, and the annular structure at the lower part of the combined annular thin-walled parts is tightly attached to the inner wall of the supporting seat. The angular positioning mechanism comprises a positioning pin support and an angular positioning pin, the lower end of the positioning pin support is fixedly connected with the base, the angular positioning pin penetrates through the positioning pin support along the radial direction of the base, and the angular positioning pin is inserted into the positioning hole on the combined annular thin-walled parts. The assembly mechanism comprises a work-shaped seat, the lower part of the work-shaped seat is connected with the base through a supporting screw, the upper part of the work-shaped seat is provided with a pressing screw, one end of the pressing screw extends to the outer extension of the combined annular thin-walled parts after penetrating through the work-shaped seat, and the combined annular thin-walled parts are clamped.

[0006] The pressing plate mechanism comprises a pressing plate screw, a pressing plate, the lower end of the pressing plate screw is connected with the base through screw thread, the upper end of the pressing plate screw penetrates through the pressing plate and is connected with the upper part of the pressing plate through a pressing plate nut, one end of the pressing plate is used for pressing the annular thin-walled component combination on the supporting base, and the other end of the pressing plate is provided with an adjusting screw, the upper end of the adjusting screw is connected with the pressing plate, and the lower end of the adjusting screw is abutted on the upper end face of the base.

[0007] The pressing plate adjusting nuts are arranged on the pressing plate screw and the adjusting screw, the pressing plate adjusting nut on the pressing plate screw is located at the lower part of the pressing plate screw, and the pressing plate adjusting nut on the adjusting screw is located at the upper part of the adjusting screw.

[0008] The auxiliary supporting mechanism comprises an auxiliary support and an auxiliary pad block, the lower part of the auxiliary support is connected with the base through screw thread, the upper part of the auxiliary support is abutted on the lower part of the annular thin-walled component combination in the suspended position, the auxiliary pad block is connected with the base through a pad block support, the auxiliary pad block is connected with the pad block support through an auxiliary pad block adjusting nut, the middle part of the auxiliary pad block is provided with a long hole, the auxiliary pad block adjusting nut penetrates through the long hole, and one end of the auxiliary pad block extends into the lower part of the annular thin-walled component combination in the opening position.

[0009] A bushing is arranged between the angular positioning pin and the positioning pin support, the upper part of the positioning pin support is provided with a positioning pin adjusting screw, and one end of the positioning pin adjusting screw is tightly pressed on the side face of the angular positioning pin after penetrating through the positioning pin support and the bushing.

[0010] The I-shaped seat is connected with the positioning hole on the annular thin-walled component combination through the assembly positioning pin.

[0011] The end of the pressing screw is provided with a pad, and the pressing screw clamps the annular thin-walled component combination through the pad.

[0012] The pad block support is installed on the upper end face of the base through a support screw and a support positioning pin.

[0013] The lower part of the supporting screw is provided with a supporting screw adjusting nut.

[0014] The lower part of the auxiliary support is provided with an auxiliary support adjusting nut.

[0015] The beneficial effects of the present application are that the annular thin-walled component combination is positioned through the supporting mechanism and the angular positioning mechanism, the outer extension suspended position and the opening position of the annular thin-walled component combination are supported through the assembly mechanism and the auxiliary supporting mechanism, the part cutting deformation and the tool setting problem are solved, and thus the product machining efficiency is effectively improved while the product quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front view of the present application;

[0017] Figure 2 is the A-A sectional view in the front view;

[0018] Figure 3 It is the DD section view in the main view;

[0019] Figure 4 It is a CC section view in the main view;

[0020] Figure 5 It is the BB section view in the main view;

[0021] Figure 6 It is the EE section view in the main view;

[0022] In the diagram: 1-base, 2-pressure plate screw, 3-adjusting screw, 4-pressure plate adjusting nut, 5-pressure plate, 6-pressure plate nut, 7-support seat screw, 8-support seat, 9-support seat positioning pin, 10-support screw, 11-support positioning pin, 12-pad support, 13-support screw adjusting nut, 14-support screw, 15-I-shaped seat, 16-clamping screw, 17-pad, 18-assembly positioning pin, 19-auxiliary support, 20-auxiliary support adjusting nut, 21-auxiliary pad, 22-auxiliary pad adjusting nut, 23-positioning pin support, 24-bushing, 25-positioning pin adjusting screw, 26-angular positioning pin. Detailed Implementation

[0023] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0024] like Figures 1 to 6 As shown, a clamping device for assembling annular thin-walled parts includes a support mechanism, an angular positioning mechanism, a pressure plate mechanism, and an assembly mechanism. The support mechanism includes a base 1 and a support seat 8. The support seat 8 has a multi-segment arc structure and is mounted annularly on the base 1. The support seat 8 and the base 1 are connected by a support seat positioning pin 9 and a support seat screw 7. The annular thin-walled part assembly is fixed to the upper end face of the support seat 8 by the pressure plate mechanism. The annular structure at the bottom of the annular thin-walled part assembly is tightly attached to the inner wall of the support seat 8. The angular positioning mechanism includes... The assembly includes a positioning pin support 23 and an angular positioning pin 26. The lower end of the positioning pin support 23 is fixedly connected to the base 1. The angular positioning pin 26 passes through the positioning pin support 23 radially along the base 1 and is inserted into the positioning hole on the annular thin-walled component assembly. The assembly mechanism includes an I-shaped seat 15. The lower part of the I-shaped seat 15 is connected to the base 1 through a support screw 14. The upper part of the I-shaped seat 15 is provided with a clamping screw 16. One end of the clamping screw 16 passes through the I-shaped seat 15 and extends to the outer extension of the annular thin-walled component assembly, clamping the annular thin-walled component assembly.

[0025] The annular thin-walled part assembly is fixed on the upper part of the support seat 8 through the pressing plate mechanism. Since the support seat 8 is annularly installed, the inside of the support seat 8 can be clamped in the lower part of the annular thin-walled part assembly, and the centering operation is quickly completed. Then, the angular positioning pin 26 is inserted into the positioning hole of the annular thin-walled part assembly, and the annular thin-walled part assembly is positioned in the circumferential direction, so that the position to be machined is located on the assembly mechanism and the auxiliary support mechanism. After the annular thin-walled part assembly is preliminarily constrained in the radial and axial directions by the pressing screw 16 on the work seat 15 and the assembly positioning pin 18, the annular thin-walled part assembly is supported by the auxiliary support mechanism on the overhanging part and the opening part, so as to solve the problems of part cutting deformation and tool setting, thereby effectively improving the machining efficiency of the product while ensuring the quality of the product.

[0026] The pressing plate mechanism comprises a pressing plate screw 2 and a pressing plate 5. The lower end of the pressing plate screw 2 is connected to the base 1 through threads, the upper end of the pressing plate screw 2 penetrates through the pressing plate 5, and the upper part of the pressing plate 5 is connected to the pressing plate 5 through a pressing plate nut 6. One end of the pressing plate 5 presses the annular thin-walled part assembly on the support seat 8, and the other end of the pressing plate 5 is provided with an adjusting screw 3. The upper end of the adjusting screw 3 is connected to the pressing plate 5, and the lower end of the adjusting screw 3 is abutted on the upper end face of the base 1. The pressing plate screw 2 and the pressing plate 5 are connected through the pressing plate adjusting nut 4, and the length of the adjusting screw 3 is adjusted at the same time, so that the pressing plate 5 remains horizontal and ensures the reliability of the pressing plate 5 pressing the part.

[0027] The pressing plate adjusting nut 4 is arranged on the pressing plate screw 2 and the adjusting screw 3. The pressing plate adjusting nut 4 on the pressing plate screw 2 is located at the lower part of the pressing plate screw 2, and the pressing plate adjusting nut 4 on the adjusting screw 3 is located at the upper part of the adjusting screw 3. The pressing plate adjusting nut 4 is tightened to lock the height position between the adjusting screw 3 and the pressing plate 5, and the height position between the pressing plate screw 2 and the base 1, so as to prevent the part from loosening during machining.

[0028] The auxiliary support mechanism includes an auxiliary support 19, a lower part of which is connected to the base 1 through screw thread, and an upper part of which is placed on the lower part of the suspended position of the ring-shaped thin-walled part combination, and an auxiliary cushion block 21, which is connected to the base 1 through the cushion block support 12, and is connected to the cushion block support 12 through the auxiliary cushion block adjusting nut 22, and has a long hole in the middle part, through which the auxiliary cushion block adjusting nut 22 passes, and one end of which extends into the lower part of the opening position of the ring-shaped thin-walled part combination, the auxiliary support 19 is adjusted to be in contact with the suspended position of the ring-shaped thin-walled part combination, so as to support the suspended position of the ring-shaped thin-walled part combination, reduce the tool relief and cutting deformation of the part caused by suspension during machining, the radial position of the auxiliary cushion block 21 is adjusted to be in contact with the opening position of the ring-shaped thin-walled part combination after the auxiliary cushion block adjusting nut 22 is loosened, and the auxiliary cushion block adjusting nut 22 is tightened, so as to reduce the opening size deformation problem of the ring-shaped thin-walled part combination caused by the opening structure of the ring-shaped thin-walled part combination during machining, and the auxiliary cushion block adjusting nut 22 is in screw thread cooperation with the cushion block support 12.

[0029] The sleeve 24 is arranged between the angular positioning pin 26 and the positioning pin support 23, the upper part of the positioning pin support 23 is provided with the positioning pin adjusting screw 25, one end of the positioning pin adjusting screw 25 is pressed against the side surface of the angular positioning pin 26 after passing through the positioning pin support 23 and the sleeve 24, the sleeve 24 facilitates the sliding of the angular positioning pin 26, and the positioning pin adjusting screw 25 is locked through the positioning pin adjusting screw 25 to prevent loosening during the machining process and cause the displacement of the part.

[0030] The I-shaped seat 15 is connected to the positioning hole on the ring-shaped thin-walled part combination through the assembly positioning pin 18, so that the I-shaped seat 15 can fix the ring-shaped thin-walled part combination at a predetermined position, and the deformation amount of the part during machining is reduced.

[0031] The end part of the pressing screw 16 is provided with the backing plate 17, the pressing screw 16 clamps the ring-shaped thin-walled part combination through the backing plate 17, and the backing plate 17 is soft in texture and can prevent the pressing screw 16 from scratching the part.

[0032] The cushion block support 12 is installed on the upper end surface of the base 1 through the support screw 10 and the support positioning pin 11, so as to ensure the position accuracy of the cushion block support 12.

[0033] The lower part of the support screw 14 is provided with the support screw adjusting nut 13, the height between the support screw 14 and the base 1 is adjusted, the axial height of the I-shaped seat 15 is adjusted, the ring-shaped thin-walled part combination is supported in a free state, the height position between the support screw 14 and the base 1 is locked by tightening the support screw adjusting nut 13, and the part is prevented from loosening during the machining process.

[0034] The lower part of the auxiliary support 19 is provided with an auxiliary support adjusting nut 20. The auxiliary support adjusting nut 20 is tightened to lock the height position between the auxiliary support 19 and the base 1, preventing the parts from loosening during processing.

Claims

1. A clamping device for assembling and machining annular thin-walled parts, characterized in that: The assembly includes a support mechanism, an angular positioning mechanism, a pressure plate mechanism, and an assembly mechanism. The support mechanism includes a base (1) and a support seat (8). The support seat (8) has a multi-segment arc structure and is mounted on the base (1) in a ring. The support seat (8) and the base (1) are connected by a support seat positioning pin (9) and a support seat screw (7). The annular thin-walled component assembly is fixed to the upper end face of the support seat (8) by the pressure plate mechanism. The annular structure at the bottom of the annular thin-walled component assembly is tightly attached to the inner wall of the support seat (8). The angular positioning mechanism includes a positioning pin support (23) and an angular positioning pin. (26) The lower end of the positioning pin support (23) is fixedly connected to the base (1). The angular positioning pin (26) passes through the positioning pin support (23) along the radial direction of the base (1) and is inserted into the positioning hole on the annular thin-walled component assembly. The assembly mechanism includes an I-shaped seat (15). The lower part of the I-shaped seat (15) is connected to the base (1) through a support screw (14). The upper part of the I-shaped seat (15) is provided with a clamping screw (16). One end of the clamping screw (16) passes through the I-shaped seat (15) and extends to the outer extension of the annular thin-walled component assembly, and clamps the annular thin-walled component assembly. The pressure plate mechanism includes a pressure plate screw (2) and a pressure plate (5). The lower end of the pressure plate screw (2) is connected to the base (1) by a thread. The upper end of the pressure plate screw (2) passes through the pressure plate (5) and is connected to the upper part of the pressure plate (5) by a pressure plate nut (6). One end of the pressure plate (5) presses the annular thin-walled component assembly onto the support seat (8). The other end of the pressure plate (5) is provided with an adjusting screw (3). The upper end of the adjusting screw (3) is connected to the pressure plate (5), and the lower end of the adjusting screw (3) rests on the upper surface of the base (1). Both the pressure plate screw (2) and the adjusting screw (3) are provided with pressure plate adjusting nuts (4). The pressure plate adjusting nuts (4) on the pressure plate screw (2) are located at the lower part of the pressure plate screw (2), and the pressure plate adjusting nuts (4) on the adjusting screw (3) are located at the upper part of the adjusting screw (3). The I-shaped base (15) is connected to the positioning hole on the annular thin-walled component assembly by means of the assembly positioning pin (18); The lower part of the support screw (14) is provided with a support screw adjusting nut (13).

2. The clamping device for assembling and machining annular thin-walled parts as described in claim 1, characterized in that: It also includes an auxiliary support mechanism, which includes an auxiliary support (19) and an auxiliary pad (21). The lower part of the auxiliary support (19) is connected to the base (1) by a thread, and the upper part of the auxiliary support (19) rests on the lower part of the suspended position of the annular thin-walled component assembly. The auxiliary pad (21) is connected to the base (1) through a pad support (12). The auxiliary pad (21) is connected to the pad support (12) through an auxiliary pad adjusting nut (22). The auxiliary pad (21) has an elongated hole in the middle, through which the auxiliary pad adjusting nut (22) passes. One end of the auxiliary pad (21) extends below the opening of the annular thin-walled component assembly.

3. The clamping device for assembling and machining annular thin-walled parts as described in claim 1, characterized in that: A bushing (24) is provided between the angular positioning pin (26) and the positioning pin support (23). A positioning pin adjusting screw (25) is provided on the upper part of the positioning pin support (23). One end of the positioning pin adjusting screw (25) passes through the positioning pin support (23) and the bushing (24) and is pressed tightly against the side of the angular positioning pin (26).

4. The clamping device for assembling and machining annular thin-walled parts as described in claim 1, characterized in that: The end of the clamping screw (16) is provided with a washer (17), and the clamping screw (16) clamps the annular thin-walled component assembly through the washer (17).

5. A clamping device for assembling and machining annular thin-walled parts as described in claim 2, characterized in that: The pad support (12) is mounted on the upper surface of the base (1) by support screws (10) and support positioning pins (11).

6. A clamping device for assembling and machining annular thin-walled parts as described in claim 2, characterized in that: The auxiliary support (19) is provided with an auxiliary support adjusting nut (20) at its lower part.

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