Double-pressing-point auxiliary pressing device capable of automatically balancing stress and using method of double-pressing-point auxiliary pressing device

Abstract

The invention relates to a double-pressing-point auxiliary pressing device capable of automatically balancing stress and a using method. The pressing device comprises a linkage screw rod, a clamping nut, a clamping pressing plate, a stand column, a base shell, a fixing shaft, a bottom plate, a linkage pin, a supporting spring and a balance beam. And when the heights of the clamping surfaces at the two ends are different, the clamping nuts at the two ends are rotated to drive the clamping pressing plates to move and adjust to the positions matched with the heights of the clamping surfaces at the two ends. The auxiliary pressing device is arranged outside an original positioning and clamping clamp and an auxiliary supporting device aiming at a part which is long in screwing length and provided with screwing-out parts on the two sides on the head, such as a C226 project speed reducer shell, multi-direction limiting and clamping are achieved on the basis of single-direction limiting of the auxiliary supporting device, machining vibration of the screwing-out parts is avoided, and the machining efficiency is improved. And a double-pressing-point automatic balanced stress structure is adopted, automatic shape following can be achieved, automatic compensation can still be applied when the heights of the pressing faces on the two sides are inconsistent, it is guaranteed that the workpiece does not deform when the workpiece is kept in the original clamping state, and the machining efficiency and the surface quality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of reducer housing processing, and in particular relates to a double-pressure-point automatic balanced force auxiliary pressing device and a usage method thereof. Background Art

[0002] In the processing of the reducer housing of the L platform C226 project, the bottom surface is positioned and clamped, and the top is rotated and enlarged, which has weak strength. Since the housing is made of ductile iron material with high hardness and large machining cutting force, vibration will be generated when processing the top machining features, the machining feed speed cannot be increased, and chatter marks will appear on the machining surface, and the surface quality does not meet the design requirements. Usually, auxiliary support is used to prevent vibration, but the auxiliary support device is a one-way limiter. For processing conditions with large cutting forces, it still cannot solve the problems of low machining efficiency and poor surface quality. Summary of the invention

[0003] The purpose of the present invention is to provide a double-pressure point automatic balanced force auxiliary clamping device, and also to provide a method for using the double-pressure point automatic balanced force auxiliary clamping device to solve the problem of improving processing efficiency and surface quality.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A double-pressure-point automatic balanced force auxiliary clamping device comprises a linkage screw 1; a clamping nut 2 cooperates with the linkage screw 1, a clamping plate 3 is mounted on the linkage screw 1, and rotating the clamping nut 2 can drive the clamping plate 3 to move and clamp the workpiece; a support spring 9 is mounted on the linkage screw 1, and its lower part is supported on a base shell 5, and its upper part supports the clamping plate 3 to ensure that the clamping plate 3 does not slide down;

[0006] The column 4 is sleeved outside the linkage screw 1, and its lower end is fixed to the base shell 5. There is a notch at the upper end, which enables the clamping plate 3 to rotate in the notch. The clamping plate 3 is clamped at a vertical angle before the workpiece is installed, and the clamping plate 3 is clamped at a vertical level after the workpiece is installed to clamp the clamping surface;

[0007] The lower end platform of the linkage screw rod 1 is inserted into the slots at both ends of the balance beam 10, and is linked with the balance beam 10 by a linkage pin 8;

[0008] The balance beam 10 is connected to the base shell 5. The balance beam 10 can rotate. The two ends drive the linkage screw 1 through the linkage pins 8. The linkage screw 1 at one end is pulled by force to rotate the balance beam 10 and drive the linkage screw 1 at the other end to ensure that the linkage screw 1 at both ends is evenly stressed. The bottom plate 7 is fixed to the base shell 5.

[0009] Furthermore, the clamping nut 2 and the linkage screw rod 1 are threadedly matched.

[0010] Furthermore, the rotating clamping nut 2 can drive the clamping plate 3 to move. When the heights of the clamping surfaces at both ends are inconsistent, the clamping nuts 2 at both ends can be rotated to drive the clamping plate 3 to move and adjust to a position that is consistent with the heights of the clamping surfaces at both ends. During clamping, the balance beam is rotated to ensure that the clamping plates 3 at both ends automatically fit with the clamping surfaces at both ends.

[0011] Furthermore, the lower end of the column 4 is fixed to the base shell 5 by screws, and the upper end has a notch, which allows the clamping plate 3 to rotate 90 degrees in the notch.

[0012] Furthermore, the linkage pin 8 and the linkage screw rod 1 are connected by a pin hole.

[0013] Furthermore, the linkage pin 8 and the balance beam 10 are connected by a linkage pin flat head and a straight groove of the balance beam 10 to ensure that when the balance beam 10 rotates, the linkage pin head translates and rotates in the straight groove of the balance beam 10, while driving the linkage screw shaft to move and ensuring that the linkage screw 1 is always vertical.

[0014] Furthermore, the balance beam 10 is connected to the base shell 5 by a fixed shaft 6 , and the balance beam 10 can rotate along the fixed shaft 6 .

[0015] Furthermore, the linkage screw 1 is inserted into two fixing holes on the upper portion of the base housing 5 .

[0016] Furthermore, the bottom plate 7 and the base shell 5 are fixed with screws, and the bottom plate 7 is wider than the base shell 5 for fixing the device on a workbench or a fixture.

[0017] A method for using a dual-pressure point automatic balanced force auxiliary pressing device comprises the following steps:

[0018] A. Fix the double-pressure point automatic balanced force auxiliary clamping device 11 to the correct position of the positioning clamping fixture 14, and fix the auxiliary support device 12 to the correct position on the double-pressure point automatic balanced force auxiliary clamping device 11;

[0019] B. After the clamping plate 3 of the device is rotated to a vertical angle, the workpiece is positioned and clamped to the positioning clamping fixture 14, the front end of the workpiece is placed on the auxiliary support device 12, and the auxiliary support device 11 is locked;

[0020] C. Rotate the clamping plate 3 of the device to a horizontal angle, and adjust the clamping nut 2 so that the clamping plate 3 floats on the clamping surface;

[0021] D. For the first piece, use a lever gauge and hit the middle of the front end of the workpiece. Set the gauge needle to zero and use a torque wrench to rotate the clamping nut 2 to tighten it. Observe the fluctuation position of the gauge needle. When the gauge needle is at the limit position of the tolerance, record the torque and then use this torque for clamping.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention is aimed at parts with a long rotational extension and a head with rotational extension parts on both sides, such as the reducer housing of the C226 project. An auxiliary clamping device is installed outside the original positioning and clamping fixture and auxiliary support. Multi-directional limiting and clamping are achieved on the basis of single-directional limiting of the auxiliary support device to avoid processing vibration of the rotational extension part. In addition, a double-pressure point automatic balanced force structure is adopted to achieve automatic shape following. Automatic compensation can still be applied if the heights of the pressing surfaces on both sides are inconsistent, thereby ensuring that the workpiece does not deform while maintaining the original clamping state, thereby improving processing efficiency and surface quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram of the use of the dual-pressure point automatic balanced force auxiliary pressing device;

[0026] Figure 2 A cross-sectional view of the dual-pressure-point automatic balanced force auxiliary pressing device;

[0027] Figure 3 This is an appearance diagram of the dual-pressure-point automatic balanced force auxiliary clamping device.

[0028] In the figure, 1. linkage screw 2. clamping nut 3. clamping plate 4. column 5. base shell 6. fixed shaft 7. bottom plate 8. linkage pin 9. support spring 10. balance beam 11. auxiliary clamping device 12. auxiliary support device 13. processed parts 14. positioning clamping fixture. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with embodiments:

[0030] The double-pressure-point automatic balanced force auxiliary clamping device of the present invention can realize automatic shape-conforming for parts with a long rotational extension and a head with rotational extension parts on both sides. Automatic compensation can still be applied if the heights of the clamping surfaces on both sides are inconsistent. The consistent clamping forces on both sides ensure that the workpiece does not deform while maintaining the original clamping state, thereby improving processing efficiency and surface quality.

[0031] like Figure 2As shown, the double-pressure-point automatic balanced force auxiliary clamping device of the present invention includes a linkage screw 1, a clamping nut 2, a clamping pressure plate 3, a column 4, a base shell 5, a fixed shaft 6, a bottom plate 7, a linkage pin 8, a support spring 9 and a balance beam 10.

[0032] The clamping nut 2 and the linkage screw 1 are threadedly matched, and the clamping plate 3 is mounted on the linkage screw 1. Rotating the clamping nut 2 can drive the clamping plate 3 to move and clamp the workpiece. The support spring 9 is mounted on the linkage screw 1, and the lower part is supported on the base shell 5, and the upper part supports the clamping plate 3 to ensure that the clamping plate 3 does not slide down.

[0033] The column 4 is sleeved on the outside of the linkage screw 1, and the lower end is fixed with screws to the base shell 5. There is a notch on the upper end, so that the clamping plate 3 can rotate 90 degrees in the notch. Before installing the workpiece, the clamping plate 3 is vertically angled to facilitate the installation of the workpiece. After the workpiece is installed, the clamping plate 3 is vertically leveled to clamp the clamping surface.

[0034] The lower end platform of the linkage screw 1 is inserted into the slots at both ends of the balance beam 10, and is linked with the balance beam 10 by a linkage pin 8. The linkage pin 8 and the linkage screw 1 are connected by a pin hole, and the linkage pin 8 and the balance beam 10 are connected by the flat head of the linkage pin 8 and the straight groove of the balance beam 10, to ensure that when the balance beam 10 rotates, the linkage pin head translates and rotates in the straight groove of the balance beam 10, while driving the linkage screw shaft to move, to ensure that the linkage screw 1 is always vertical.

[0035] The balance beam 10 is connected to the base shell 5 by a fixed shaft 6. The balance beam 10 can rotate along the fixed shaft 6. The two ends of the balance beam 10 drive the linkage screw 1 through the linkage pin 8. The linkage screw 1 at one end is subjected to force to pull the balance beam 10 to rotate and drive the linkage screw 1 at the other end, ensuring that the linkage screw 1 at both ends is subjected to uniform force.

[0036] The linkage screw 1 and the clamping nut 2 are threadedly matched. Rotating the clamping nut 2 can drive the clamping plate 3 to move. When the clamping surface heights at both ends are inconsistent, the clamping nuts 2 at both ends can be rotated to drive the clamping plate 3 to move and adjust to a position that is consistent with the height of the clamping surfaces at both ends. When clamping, the balance beam is rotated to ensure that the clamping plates 3 at both ends automatically fit with the clamping surfaces at both ends.

[0037] The bottom plate 7 is fixed to the base housing 5 by screws. The bottom plate 7 is wider than the base housing 5 and is used to fix the device on a workbench or a fixture.

[0038] The double pressure point automatically balances the force to assist the installation of the clamping device.

[0039] 1. The lower end platform of the linkage screw rod 1 is inserted into the slots at both ends of the balance beam 10, and is linked with the balance beam 10 by the linkage pin 8. The linkage pin 8 and the linkage screw rod 1 are connected by a pin hole, and the linkage pin 8 and the balance beam 10 are connected by the linkage pin 8 flat head and the balance beam 10 straight groove.

[0040] 2. Continue to install the above from the bottom of the base shell 5, insert the linkage screw 1 into the two fixing holes on the upper part of the base shell 5, and fix the balance beam 10 with the fixed shaft 6.

[0041] 3. The bottom plate 7 and the base housing 5 are fixed with screws.

[0042] 4. The column 4 is sleeved outside the linkage screw 1, and the lower end is fixed to the base shell 5 by screws.

[0043] 5. The support spring 9 is mounted on the linkage screw 1, the clamping plate 3 is mounted on the linkage screw 1 on the support spring 9, and the clamping nut 2 is screwed into the linkage screw 1 by threaded matching.

[0044] Method for using a double-pressure-point automatic balanced force auxiliary clamping device.

[0045] like Figure 1 As shown, the reducer processing application includes the following steps:

[0046] 1. Fix the double-pressure-point automatic balanced force auxiliary clamping device 11 to the correct position of the positioning clamping fixture 14, and fix the auxiliary support device 12 to the correct position on the double-pressure-point automatic balanced force auxiliary clamping device 11.

[0047] 2. After the clamping plate 3 of the device is rotated to a vertical angle, the workpiece is positioned and clamped on the positioning clamping fixture 14, the front end of the workpiece is placed on the auxiliary support device 12, and the auxiliary support device 11 is locked.

[0048] 3. Rotate the clamping plate 3 of the device to a horizontal angle, and adjust the clamping nut 2 so that the clamping plate 3 floats on the clamping surface.

[0049] 4. For the first piece, use a lever gauge, hit the middle of the front end of the workpiece, set the needle to zero, use a torque wrench to rotate the clamping nut 2 to tighten it, observe the fluctuation position of the needle, and ensure that the needle is in the limit position of the tolerance. Note the torque and then use this torque for clamping.

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A dual-pressure point automatic balanced force auxiliary pressing device, characterized in that: It comprises a linkage screw (1); a clamping nut (2) cooperates with the linkage screw (1); a clamping plate 3 is mounted on the linkage screw (1); rotating the clamping nut (2) can drive the clamping plate (3) to move and clamp the workpiece; a support spring (9) is mounted on the linkage screw (1); the lower part of the support spring is supported on the base shell (5); the upper part of the support spring supports the clamping plate (3) to ensure that the clamping plate (3) does not slide down; The column (4) is sleeved outside the linkage screw (1), and its lower end is fixed to the base shell (5). The upper end has a notch, which enables the clamping plate (3) to rotate in the notch. Before the workpiece is installed, the clamping plate (3) is vertically angled, and after the workpiece is installed, the clamping plate (3) is vertically leveled for clamping the clamping surface; The lower end platform of the linkage screw rod (1) is inserted into the slots at both ends of the balance beam (10), and is linked with the balance beam (10) by a linkage pin (8); The balance beam (10) is connected to the base shell (5). The balance beam (10) can rotate. The linkage screws (1) are driven by linkage pins (8) at both ends. The linkage screw (1) at one end is pulled by force to rotate the balance beam (10) and drive the linkage screw (1) at the other end, thereby ensuring that the linkage screws (1) at both ends are evenly stressed. The bottom plate (7) is fixed to the base shell (5).

2. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The clamping nut (2) and the linkage screw rod (1) are threadedly matched.

3. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The rotating clamping nut (2) can drive the clamping pressure plate (3) to move. When the heights of the clamping surfaces at both ends are inconsistent, the clamping nuts (2) at both ends can be rotated to drive the clamping pressure plate (3) to move and adjust to a position that is compatible with the heights of the clamping surfaces at both ends. During clamping, the balance beam rotates to ensure that the clamping pressure plates (3) at both ends automatically fit with the clamping surfaces at both ends.

4. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The lower end of the column (4) is fixed to the base shell (5) by screws, and the upper end is provided with a notch, which enables the clamping plate (3) to rotate 90 degrees in the notch.

5. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The linkage pin (8) and the linkage screw rod (1) are connected via a pin hole.

6. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The linkage pin (8) and the balance beam (10) are connected by a linkage pin flat head and a balance beam (10) straight groove, so that when the balance beam (10) rotates, the linkage pin head translates and rotates in the balance beam (10) straight groove, and drives the linkage screw shaft to move while ensuring that the linkage screw (1) is always vertical.

7. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The balance beam (10) is connected to the base shell (5) by a fixed shaft (6), and the balance beam (10) can rotate along the fixed shaft (6).

8. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The linkage screw rod (1) is inserted into two fixing holes on the upper part of the base shell (5).

9. The dual-pressure point automatic balanced force auxiliary pressing device according to claim 1, characterized in that: The bottom plate (7) and the base shell (5) are fixed by screws, and the part of the bottom plate (7) wider than the base shell (5) is used to fix the device on a workbench or a fixture.

10. A method for using a dual-pressure point automatic balanced force auxiliary pressing device, characterized in that: The following steps are involved: A. Fix the double-pressure point automatic balanced force auxiliary clamping device (11) to the correct position of the positioning clamping fixture (14), and fix the auxiliary support device (12) to the correct position on the double-pressure point automatic balanced force auxiliary clamping device (11); B. After the clamping plate (3) of the device is rotated to a vertical angle, the workpiece is positioned and clamped on the positioning clamping fixture (14), the front end of the workpiece is placed on the auxiliary support device (12), and the auxiliary support device (11) is locked; C. Rotate the clamping plate (3) of the device to a horizontal angle, and adjust the clamping nut (2) so that the clamping plate 3 floats on the clamping surface; D. For the first piece, use a lever gauge and hit the center of the front end of the workpiece. Set the gauge needle to zero and use a torque wrench to rotate the clamping nut (2) to tighten it. Observe the fluctuation position of the gauge needle. When the gauge needle is at the limit position of the tolerance, record the torque and use this torque for clamping.

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