Flexible machining clamp for support bridge body

Abstract

The utility model discloses a flexible machining clamp for a support bridge body. The flexible machining clamp comprises a positioning device, a flexible supporting module, a clamp body and a pressing device. The two groups of positioning devices are respectively arranged at two ends of the clamp body and correspond to two ends of the bracket bridge body in position; the two groups of flexible supporting modules are uniformly distributed between the two groups of positioning devices and are fixedly connected with the clamp body; the two sets of positioning devices and the two sets of flexible supporting modules correspond to one set of pressing devices respectively and are used for pressing the support bridge body. According to the utility model, tremor can be eliminated, reliable support can be provided, no deformation can be produced before and after clamping, and the processing quality and the processing efficiency of parts are improved; the clamp is suitable for machining thin-wall structural parts such as support bridge bodies, and is simple in structure, good in manufacturability, wide in application range and low in production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a flexible processing fixture for a support bridge body. Background Art

[0002] The support bridge body is a thin-walled welded structural part that requires processing after welding. This part is an important component of the pick-up and delivery device. Its processing accuracy directly affects the stability of the pick-up and delivery device system. However, due to the particularity of the part structure, the wall thickness of the main part is 3mm, and the part is semicircular. Therefore, the processing after welding must be guaranteed by a good processing fixture. The solutions used in the previous processing fixture design are basically:

[0003] 1. The main parts are rigidly supported and positioned at both ends, and auxiliary supports with adjusting screws are added in the middle; 2. The main parts are rigidly supported and positioned at both ends, and auxiliary supports are rigid contour supports.

[0004] The bracket bridge body parts will produce different degrees of deformation during the welding process, and the arc of one of the positioning references used in the processing will also be deformed. The defects of adopting the above scheme are:

[0005] Solution 1: The support point of the adjustment screw type auxiliary support is point contact, which cannot provide good support. Therefore, vibration is easily generated during processing, resulting in the inability to meet product requirements for processing accuracy and surface finish.

[0006] Solution 2: The auxiliary support adopts a rigid contour support. When clamping, the positioning support can be close to the arc to eliminate vibration, but rebound will occur when released, causing the processing during clamping, such as the coaxiality and parallelism of the φ24H10 hole, to change, thus failing to meet product requirements. Utility Model Content

[0007] The utility model provides a flexible processing fixture for a support bridge body, and aims to solve the technical problem that the support bridge body is prone to vibration during processing and is prone to deformation during clamping.

[0008] In order to solve the above technical problems, the utility model provides a flexible processing fixture for a support bridge body, which is characterized by: including a positioning device, a flexible support module, a clamping body and a clamping device; two groups of positioning devices are respectively installed at the two ends of the clamping body, and their positions correspond to the two ends of the support bridge body; two groups of flexible support modules are evenly distributed between the two groups of positioning devices and fixedly connected to the clamping body; the two groups of positioning devices and the two groups of flexible support modules each correspond to a group of clamping devices, which are used to clamp the support bridge body.

[0009] Beneficial effects: The utility model can eliminate vibration and provide reliable support, and can produce no deformation before and after clamping, thereby improving the processing quality and efficiency of parts; it is suitable for the processing of thin-walled structural parts such as bracket bridge bodies, and the fixture has a simple structure, good processability, a wide range of applications, and low production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 for Figure 1 A top view of

[0012] Figure 3 for Figure 1 A-direction view;

[0013] Figure 4 for Figure 3 Left view of;

[0014] Figure 5 Schematic diagram of the flexible support module. DETAILED DESCRIPTION

[0015] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below.

[0016] The utility model provides a flexible processing fixture for a support bridge body, comprising a positioning device 1, a flexible support module 2, a clamp body 3, a pressing device 4, and a positioning key 5;

[0017] The two groups of positioning devices 1 are respectively installed at the two ends of the clamp body 3, and their positions correspond to the two ends of the bracket bridge body component; the two groups of flexible support modules 2 are evenly distributed between the two groups of positioning devices and fixedly connected to the clamp body 3; the two groups of positioning devices 1 and the two groups of flexible support modules 2 each correspond to a group of clamping devices 4, satisfying the principle of mutual correspondence between clamping and support.

[0018] The clamping device includes a column, a screw, a clamping nut and a pressure plate. The pressure plate is sleeved on the screw, and the clamping nut is installed at the end of the screw. One end of the pressure plate is hinged with the end of the column. After the bracket bridge body is installed in the fixture, the clamping nut of the clamping device is locked, driving the clamping device to clamp the bracket bridge body. Two positioning keys 5 are installed at both ends of the bottom of the fixture to determine the accurate positioning of the fixture and the machine tool. The column and screw are fixed on the fixture.

[0019] The bracket bridge body parts are precisely positioned by the positioning device, which is a rigid positioning device to ensure the reliable positioning of the parts; the flexible support module adopts a lockable elastic multi-pin mechanism, and the multiple elastic pins of multiple flexible support modules automatically adjust with the arc surface of the parts to fit tightly and then lock. The locked pins can bear 400kg, which fully meets the processing requirements, and then the parts are pressed. The clamp body has two positioning keys on the lower end face to determine its precise position on the machine tool.

[0020] Rigid positioning supports are used in combination with flexible supports, which can be highly adaptable to the arc shape of the component.

[0021] The flexible processing fixture of the support bridge body of the utility model can rigidly and accurately position the support, providing a correct benchmark for subsequent processing. The flexible support module of the fixture can highly adapt to the arc surface of the component, and can be quickly locked to maintain the stability of the arc surface. The locked module can bear 400kg, which fully meets the processing requirements. The flexible processing fixture solution can eliminate the vibration generated during processing, and because the flexible support module fits the shape of the arc, it will not deform when pressed, and will not change when released. Therefore, the dimensions after processing will not change, thereby well ensuring the quality requirements of the product.

[0022] The utility model can accurately position, flexibly support and quickly clamp, eliminates the vibration produced in the process of parts processing and the deformation produced by clamping, and improves the processing quality.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flexible processing fixture for a stent bridge body, characterized in that: It includes a positioning device, a flexible support module, a clamping body and a pressing device; two groups of positioning devices are respectively installed at the two ends of the clamping body, and their positions correspond to the two ends of the support bridge body; two groups of flexible support modules are evenly distributed between the two groups of positioning devices and fixedly connected to the clamping body; the two groups of positioning devices and the two groups of flexible support modules each correspond to a group of pressing devices, which are used to press the support bridge body.

2. A flexible processing fixture for a stent bridge according to claim 1, characterized in that: A positioning key is installed at the bottom of the clamp body.

3. A flexible processing fixture for a stent bridge according to claim 1, characterized in that: The flexible support module adopts a lockable elastic multi-pin mechanism.

4. The flexible processing fixture for a stent bridge according to claim 1, characterized in that: The multiple elastic pins of the flexible support module can be adaptively adjusted along the arc surface of the part.

5. The flexible processing fixture for a stent bridge body according to claim 1, characterized in that: The clamping device comprises a column, a screw rod, a clamping nut and a clamping plate. The clamping plate is sleeved on the screw rod, the clamping nut is installed at the end of the screw rod, and one end of the clamping plate is hinged with the end of the column.

6. A flexible processing fixture for a stent bridge body according to claim 5, characterized in that: After the support bridge body is installed into the fixture, the clamping nut is tightened to drive the pressure plate to press the support bridge body.

7. The flexible processing fixture for a stent bridge body according to claim 5, characterized in that: The columns and screws are all fixed on the clamp body.

8. The flexible processing fixture for a stent bridge body according to claim 1, characterized in that: The lower end surface of the clamp body is provided with two positioning keys.

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