Bolt machining clamp

Abstract

The bolt machining clamp comprises a machining base and a clamping body, the clamping body comprises a positioning piece, an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are oppositely arranged, the upper clamping plate is slidably connected to the machining base in the vertical direction, and the lower clamping plate is fixedly or slidably connected to the machining base in the vertical direction. The positioning piece is used for keeping the upper clamping plate or / and the lower clamping plate at the fixed position, and the side wall of the machining base is provided with a receding opening for a bolt to penetrate through. According to the scheme, fixing of bolts with different diameters can be adapted, the bolts can be clamped between the two clamping plates by adjusting the distance between the two clamping plates, the stability of the bolts is kept, and the machining yield can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fastener processing, and particularly relates to a bolt processing fixture. Background Art

[0002] A U-bolt, also known as a riding bolt, has threads at both ends for combining with nuts and belongs to a kind of fastener, mainly used for fixing tubular objects such as water pipes or sheet-like objects such as automotive leaf springs. When processing the threads of a U-bolt, it needs to be fixed. A fixture for fastener processing with the publication number of CN215999524U designed by the applicant in the early stage includes a frame and two fixing plates. Two parallel slide rails are connected to the frame, and the two slide rails are respectively slidably connected to the two fixing plates; fixing holes are provided at one end of the two fixing plates away from each other, and the central axis of the fixing hole is perpendicular to the slide rail. A support plate is connected to the lower slide rail. In this solution, the distance between the two fixing holes can be adjusted by sliding the two fixing plates to adapt to U-bolts of different sizes. Moreover, after the U-bolt passes through the two fixing holes, due to the limitation of the U-bolt, the two fixing plates will not move relative to each other during the processing, and at the same time, the support of the support plate prevents the U-bolt from loosening from the fixing hole. The mutual cooperation between the fixture and the U-bolt enables the U-bolt to be firmly fixed.

[0003] This fixture has been frequently used in the production process. It has a simple structure and is easy to use. However, for bolts with different diameters, the fixing plates need to be replaced. The main reason is that the diameters of the fixing holes on different fixing plates are different, so as to replace the fixing plate with a hole diameter matching the bolt diameter. The replacement process includes steps such as disassembly, installation, and debugging, which correspondingly increases the work process to a certain extent. Summary of the Utility Model

[0004] The utility model aims to provide a bolt processing fixture, especially applied to the fixation of U-bolts during tapping, to solve the problem that the existing fixtures cannot be widely applied to the processing of bolts with different diameters.

[0005] A bolt processing fixture in this solution includes a processing base and a clamping body. The clamping body includes a positioning member, two oppositely arranged upper clamping plates and a lower clamping plate. The upper clamping plate is slidably connected to the processing base in the vertical direction, and the lower clamping plate is fixedly connected or slidably connected to the processing base in the vertical direction. The positioning member is used to keep the upper clamping plate or / and the lower clamping plate in a fixed position. A relief opening for the bolt to pass through is provided on the side wall of the processing base.

[0006] The working principle of this solution is as follows: The provision of a relief opening on the processing base and the cooperation between the two clamping plates enable the rapid clamping and loosening of the U-shaped bolt. The clamping plates are connected to the processing base in a sliding manner, which allows for convenient and rapid positioning, improving the processing efficiency. After the position of the clamping plate is determined, a positioning component is used to lock the position of the clamping plate, preventing the clamping plate from shaking due to vibration during the tapping process and ensuring the smooth progress of tapping.

[0007] The beneficial technical effects of this solution are as follows: This solution can adapt to the fixation of bolts with different diameters. By adjusting the distance between the two clamping plates, the bolt can be clamped between them, maintaining the stability of the bolt, which is conducive to improving the yield rate of processing.

[0008] Furthermore, the positioning component includes a servo motor and a lead screw. The servo motor is installed on the processing base. The output shaft of the servo motor is connected to one end of the lead screw through a connecting shaft, and the other end of the lead screw is rotatably connected to the processing base. The upper clamping plate or / and the lower clamping plate are threadedly connected to the lead screw. During the process of driving the lead screw to rotate by the servo motor, the clamping plate can move longitudinally. On the one hand, it realizes the clamping and fixation of bolts with different diameters. On the other hand, after the bolt is clamped, the position of the clamping plate is determined. After the servo motor stops running, the threaded connection between the clamping plate and the lead screw exerts a self-locking function, enabling the clamping plate to stably maintain the determined position, and conveniently, rapidly, and efficiently realizing the adjustment and fixation of the position of the clamping plate.

[0009] Furthermore, the lower clamping plate is fixedly connected to the processing base. A slide bar is connected between the top of the processing base and the lower clamping plate. The upper clamping plate is slidably connected to the slide bar. By using the slide bar to connect the upper clamping plate and the processing base in a sliding manner, such a structure is simpler compared to setting a chute or a slide rail on the processing base, and the preparation process of the device is more convenient. Moreover, the slide bar and the lead screw are evenly distributed on both sides of the two clamping plates, forming an area for placing the bolt in the middle, making the structure of the device more coordinated.

[0010] Furthermore, two clamping blocks for clamping the lateral sides of the bolt are slidably connected to the lower clamping plate. The upper clamping plate and the lower clamping plate position the upper and lower sides of the bolt. In this solution, the lateral clamping blocks fix the left and right sides of the bolt. Before clamping the upper and lower sides of the bolt, the bolt is first placed on the lower clamping plate, and then the clamping blocks clamp the left and right sides of the bolt. The clamping blocks can automatically align the bolt, making the end of the bolt face the processing equipment directly, which is conducive to accurate positioning during processing.

[0011] Furthermore, the two clamping blocks are magnet blocks that attract each other. The magnetic attraction force between the clamping blocks is used to enhance the clamping effect on the bolt.

[0012] Further, elastic rubber pads are provided on one side of the upper clamping plate and the lower clamping plate in contact with the bolt. The elastic rubber pads can prevent the two clamping plates from wearing the bolt on the one hand, and on the other hand, the elastic rubber pads will deform to a certain extent after being stressed, and the contact part with the bolt will be sunken, and part of the bolt will sink into the sunken part, making the fixing effect of the device on the bolt better. Brief Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of Embodiment 1 of a bolt processing fixture of the present utility model;

[0014] Figure 2 is a schematic structural diagram of Embodiment 2 of a bolt processing fixture of the present utility model. Detailed Description of the Invention

[0015] The following is a more detailed description through specific embodiments:

[0016] The reference numerals in the accompanying drawings of the specification include: processing base 1, lead screw 2, relief opening 3, clamping block 4, sliding groove 5, lower clamping plate 6, elastic rubber pad 7, upper clamping plate 8, sliding rod 9, servo motor 10.

[0017] Embodiment 1 is basically as shown in the attached Figure 1 figures: A bolt processing fixture includes a processing base 1 and a clamping body. The clamping body includes a positioning member, two relatively arranged upper clamping plates 8 and lower clamping plates 6. The lower clamping plate 6 is fixedly connected to the bottom of the processing base 1, or the lower clamping plate 6 is integrally formed with the bottom of the processing base 1. A sliding rod 9 is connected between the lower clamping plate 6 and the top of the processing base 1. The positioning member includes a servo motor 10 and a lead screw 2. The servo motor 10 is installed on the top of the processing base 1. The output shaft of the servo motor 10 is connected to the upper end of the lead screw 2 through a connecting shaft. The lower end of the lead screw 2 is rotatably connected to the lower clamping plate 6. The upper clamping plate 8 is threadedly connected to the lead screw 2, and at the same time, the upper clamping plate 8 is also slidably connected to the sliding rod 9. Elastic rubber pads 7 are provided on one side of the upper clamping plate 8 and the lower clamping plate 6 in contact with the bolt.

[0018] A relief opening 3 for the bolt to pass through is opened at the lower end of the side wall at the rear of the processing base 1. The relief opening 3 is a horizontally extended strip-shaped opening, and the lower edge of the relief opening 3 is 0.5 cm lower than the surface of the elastic rubber pad 7 on the lower clamping plate 6.

[0019] Sliding grooves 5 are provided on the lower clamping plate 6 and the elastic rubber pad 7 on its surface. Two clamping blocks 4 for clamping the two lateral sides of the bolt are slidably connected in the sliding grooves 5. The clamping blocks 4 are magnet blocks that attract each other.

[0020] The specific implementation process is as follows: after starting the servo motor 10 to move the upper clamping plate 8 away from the lower clamping plate 6, the U-shaped bolt is placed flat on the lower clamping plate 6, and the end of the U-shaped bolt is inserted into the clearance opening 3 to perform preliminary positioning, and then the two clamping blocks 4 are slid so that they are clamped on both sides of the U-shaped bolt, and the two ends of the U-shaped bolt to be tapped pass through the space between the upper clamping plate 8 and the lower clamping plate 6, that is, the two ends of the U-shaped bolt to be tapped extend beyond the front edge of the lower clamping plate 6.

[0021] Then, the servo motor 10 is started to move the lower clamping plate 6 downward until the U-shaped bolt is clamped between the upper clamping plate 8 and the lower clamping plate 6, and the tapping process begins.

[0022] Embodiment 2 is different from Embodiment 1 in that Figure 2 As shown, the opening 3 is a strip-shaped opening extending longitudinally. When in use, the U-bolt is placed longitudinally, and its bending part extends into the opening 3, and the two ends of the U-bolt are located on the same vertical line.

Claims

1. A bolt processing fixture, characterized in that: It includes a processing base and a clamping body. The clamping body includes a positioning member, two oppositely arranged upper clamping plates and a lower clamping plate. The upper clamping plate is slidably connected to the processing base in the vertical direction, and the lower clamping plate is fixedly connected or slidably connected to the processing base in the vertical direction. The positioning member is used to keep the upper clamping plate or / and the lower clamping plate in a fixed position. A relief opening for a bolt to pass through is provided on the side wall of the processing base.

2. A bolt processing fixture according to claim 1, characterized in that: The positioning member includes a servo motor and a lead screw. The servo motor is installed on the processing base. The output shaft of the servo motor is connected to one end of the lead screw through a connecting shaft, and the other end of the lead screw is rotatably connected to the processing base. The upper clamping plate or / and the lower clamping plate is threadedly connected to the lead screw.

3. The bolt processing fixture according to claim 2, characterized in that: The lower clamping plate is fixedly connected to the processing base. A slide bar is connected between the top of the processing base and the lower clamping plate. The upper clamping plate is slidably connected to the slide bar.

4. A bolt processing fixture according to any one of claims 1 to 3, characterized in that: Two clamping blocks for clamping the two lateral sides of the bolt are slidably connected to the lower clamping plate.

5. A bolt processing fixture according to claim 4, characterized in that: The two clamping blocks are magnet blocks that attract each other.

6. A bolt processing fixture according to any one of claims 1 to 3 and 5, characterized in that: Elastic rubber pads are provided on the sides of the upper clamping plate and the lower clamping plate that contact the bolt.

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