A quick-clamping assembly for tapping bolts of various sizes

Abstract

This utility model relates to the field of clamping technology for bolt tapping, specifically to a quick clamping assembly for tapping processes adaptable to various bolt sizes, used to fix the bolt body upon entry. It includes a base plate that can be mounted on the worktable of a tapping machine; a clamping unit disposed on the top of the base plate for clamping the bolt body; a bolt return assembly disposed on the clamping unit and abutting against the end of the bolt body; and a limiting assembly disposed on the clamping unit for limiting the head of the bolt body. A first slide rail is fixed along its width on one side of the top of the base plate. The clamping unit includes two moving parts that can reciprocate on the top of the first slide rail, and each pair of moving parts is respectively fixed with a clamping block for fixing the bolt body. Each set of limiting assemblies is respectively mounted on the moving parts. This utility model, by providing the bolt return assembly and the limiting assembly, prevents axial movement of the bolt during tapping, thereby improving the tapping quality.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology for bolt tapping, specifically a quick clamping assembly for tapping bolts of various specifications. Background Technology

[0002] Tapping is one of the core processes in bolt manufacturing, and its machining accuracy directly determines the reliability and service life of the bolt connection. As a key component of the tapping equipment, the clamping assembly must achieve stable positioning and rapid clamping of the bolt blank, ensuring that the blank does not shift radially or move axially during the tapping process, while also meeting the requirements of high-efficiency production.

[0003] During the tapping process, the cutting tool applies a continuous axial cutting force to the bolt. However, the existing clamping structure can only achieve radial clamping and positioning, lacking an effective axial limiting and anti-movement mechanism. This causes the bolt to have a significant tendency to move under the action of axial force, which in turn leads to problems such as deviation in thread machining depth, thread deformation, and accelerated wear of the tapping tool, seriously affecting the tapping quality and reducing the product qualification rate. Utility Model Content

[0004] The purpose of this utility model is to provide a quick clamping assembly for tapping bolts of various specifications. By setting a bolt return assembly and a limiting assembly, the axial movement of the bolt is prevented during tapping, thereby improving the tapping quality.

[0005] To address the problems of existing technologies, this utility model provides a quick clamping assembly for tapping bolts of various specifications, used to fix the bolt body. It includes a base plate that can be mounted on the worktable of a tapping machine; a clamping unit disposed on the top of the base plate for clamping the bolt body; a bolt return assembly disposed on the clamping unit and abutting against the end of the bolt body; and two sets of limiting assemblies disposed on the clamping unit to limit the head of the bolt body. A first slide rail is fixed along its width on one side of the top of the base plate. The clamping unit includes two moving parts that can reciprocate on the top of the first slide rail, and each pair of moving parts is fixed with a clamping block for fixing the bolt body. Each set of limiting assemblies is mounted on the moving parts, and each limiting assembly includes a limiting block that can reciprocate on the clamping block and limit the end of the bolt body. The bolt return assembly also includes a return plate that reciprocates along the axial direction of the bolt body and abuts against the end of the bolt body.

[0006] Preferably, each moving part has a first sliding groove and the clamping block has a second sliding groove. The first sliding groove and the second sliding groove are connected to each other, and the limiting block can reciprocate in the first sliding groove and the second sliding groove.

[0007] Preferably, the limiting component further includes a fixing clip installed on the back of the moving part, and a third telescopic drive component for driving the limiting block to reciprocate is installed on the fixing clip.

[0008] Preferably, the clamping unit further includes a second slider mounted on the bottom of the moving part, and the second slider is slidably engaged with the first slide rail.

[0009] Preferably, the clamping block has a V-shaped groove at its center that can adapt to the end of the bolt body.

[0010] Preferably, a mounting plate is fixed to one end of the base plate away from the moving part, and a second slide rail is provided at the center of the top of the base plate along its length. The clamping unit also includes a sliding member that can reciprocate on the top of the second slide rail, and a first slider that can cooperate with the second slide rail is provided at the bottom of the sliding member. Two movably connected transmission rods are also provided on both sides of the top of the sliding member, and the transmission rods are connected to the moving part.

[0011] Preferably, the clamping unit further includes a first telescopic drive member fixed to the mounting plate, and the output end of the first telescopic drive member passes through the mounting plate and is connected to the sliding member.

[0012] Preferably, the bolt return assembly further includes a fixing plate fixed to the upper part of the sliding member, a second telescopic drive member is connected to the fixing plate, and the output end of the second telescopic drive member is connected to the return plate.

[0013] The advantages of this utility model compared to the prior art are: This application constructs a bidirectional, collaborative axial restraint structure by specifically designing a bolt return assembly and a limiting assembly, achieving reliable axial constraint on the bolt body and fundamentally suppressing its axial movement tendency during the tapping process. Specifically, the bolt return assembly consists of a return plate and a second telescopic drive component. After completing the radial clamping and positioning process of the bolt body, the second telescopic drive component moves the return plate along the axial direction of the bolt body until the working surface of the return plate forms a tight and stable abutment with one end face of the bolt body. This provides unilateral axial restraint support for the bolt body, effectively preventing axial displacement towards that end. Similarly, the limiting assembly adopts a cooperative structure of a third telescopic drive component and two limiting blocks. The third telescopic drive component can drive the two limiting blocks to move synchronously, so that the limiting surfaces of the two limiting blocks respectively form a close-fitting restraint with the other end face of the bolt body. By rigidly restricting the axial displacement of the bolt body on that side, it forms a bidirectional complementary restraint effect with the tightening action of the bolt return assembly. With the coordinated operation of the bolt return assembly and the limiting assembly, the bolt body is always in a bidirectional axial constraint state throughout the tapping process, which can avoid axial movement caused by axial cutting force, thereby ensuring the integrity of the thread structure. At the same time, it reduces the abnormal wear of the tapping tool caused by bolt movement, and ultimately achieves a significant improvement in the quality of bolt tapping. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional structural diagram of a quick-clamping assembly for tapping bolts of various specifications according to this utility model.

[0015] Figure 2 This is a second three-dimensional structural diagram of a quick-clamping assembly for tapping bolts of various specifications according to this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of a clamping unit of a quick-clamping assembly for tapping bolts of various specifications, according to this utility model.

[0017] Figure 4 This is a first three-dimensional structural diagram of a limiting component of a fast clamping assembly for tapping bolts of various specifications, which is installed on a clamping unit.

[0018] Figure 5 This is a second three-dimensional structural diagram of a limit component of a fast clamping assembly for tapping bolts of various specifications, which is installed on a clamping unit.

[0019] The following are the labels in the diagram: 1. Base plate; 11. First slide rail; 12. Mounting plate; 13. Second slide rail; 2. Clamping unit; 21. Sliding component; 211. First slider; 22. Moving component; 221. Second slider; 222. First slide groove; 23. Clamping block; 231. Second slide groove; 24. First telescopic drive component; 25. Transmission rod; 3. Bolt return assembly; 31. Fixing plate; 32. Return plate; 33. Second telescopic drive component; 4. Limiting assembly; 41. Limiting block; 42. Third telescopic drive component; 43. Fixing clip; 100. Bolt body. Detailed Implementation

[0020] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0021] Reference Figures 1-5 As shown, this utility model provides a quick clamping assembly for tapping bolts of various specifications, used to fix the bolt body 100 on site. It includes a base plate 1, which can be installed on the worktable of the tapping machine. The base plate 1 serves as the basic mounting carrier of the entire clamping assembly and can be stably assembled on the worktable of the tapping machine. It provides fixed support and positioning reference for all subsequent functional components, ensuring that the assembly maintains structural stability during the tapping process and avoiding the impact of foundation shaking on the processing accuracy. A clamping unit 2 is disposed on the top of the base plate 1 to clamp the bolt body 100; a bolt return assembly 3 is disposed on the clamping unit 2 and abuts against the end of the bolt body 100; a limiting assembly 4, having two sets, is disposed on the clamping unit 2 and limits the head of the bolt body 100; a first slide rail 11 is fixed on one side of the top of the base plate 1 along its width direction; the clamping unit 2 includes two moving parts 22 that can slide back and forth on the top of the first slide rail 11, and each of the two moving parts 22 is respectively fixed with a clamping block 23 for fixing the bolt body 100; the distance between the two moving parts 22 is adjusted to adapt to bolt bodies 100 of different diameters; the clamping block 23 fixed on each moving part 22 is in direct contact with the bolt body 100; through the relative clamping action of the two clamping blocks 23, the radial positioning and fixing of the bolt body 100 is achieved, preventing the bolt body 100 from radially shifting during the tapping process.

[0022] refer to Figure 1 and Figure 2As shown, the bolt return assembly 3 also includes a return plate 32 that reciprocates along the axial direction of the bolt body 100 and abuts against the end of the bolt body 100. The bolt return assembly 3 also includes a fixing plate 31 fixed to the upper part of the sliding member 21. A second telescopic drive member 33 is connected to the fixing plate 31, and the output end of the second telescopic drive member 33 is connected to the return plate 32. The bolt return assembly 3 performs the function of axial limiting on one side of the bolt body 100 and is composed of the fixing plate 31, the second telescopic drive member 33, and the return plate 32. The fixing plate 31 is fixed on the upper part of the sliding member 21, providing a stable installation platform for the second telescopic drive member 33, ensuring that the output direction of the drive member is consistent with the axis of the bolt body 100; the second telescopic drive member 33, as a power source, can output linear driving force to drive the return plate 32 to reciprocate along the axis of the bolt body 100, realizing the contact or separation between the return plate 32 and the end of the bolt body 100; under the drive of the second telescopic drive member 33, the return plate 32 can tightly abut against one end of the bolt body 100, and by continuously applying axial clamping force, restrict the axial movement of the bolt body 100 in that end direction.

[0023] refer to Figure 4 and Figure 5 As shown, each set of limiting components 4 is respectively installed on the moving part 22. The limiting component 4 includes a limiting block 41 that can reciprocate on the clamping block 23 and limit the end of the bolt body 100. Each moving part 22 has a first sliding groove 222, and the clamping block 23 has a second sliding groove 231. The first sliding groove 222 and the second sliding groove 231 are opposite to each other, and the limiting block 41 can reciprocate in the first sliding groove 222 and the second sliding groove 231. The limiting component 4 also includes a fixing clip 43 installed on the back of the moving part 22, and a third telescopic drive member 42 for driving the limiting block 41 to reciprocate is installed on the fixing clip 43.

[0024] The limiting component 4 cooperates with the bolt return component 3 to achieve bidirectional axial limiting. Each limiting component 4 is installed on a corresponding moving part 22 and consists of a limiting block 41, a third telescopic drive component 42, and a fixing clip 43. The fixing clip 43 is installed on the back of the moving part 22, providing a stable mounting and fixing carrier for the third telescopic drive component 42, while avoiding interference with components such as the clamping block 23 and the bolt body 100, ensuring the compactness and coordinated movement of the overall component structure. The third telescopic drive component 42 is installed on the fixing clip 43 and serves as the power source for the limiting block 41, outputting a controllable linear driving force to drive the limiting block 41 to reciprocate along a preset trajectory. The limiting block 41 can be positioned in the first sliding groove 222 of the moving part 22 and the clamping block... The first slide 222 slides back and forth in the second slide 231. The docking design of the first slide 222 and the second slide 231 provides continuous and precise movement guidance for the limiting block 41, ensuring that the limiting block 41 always moves in a direction parallel to the axis of the bolt body 100, and avoiding the failure of the limiting due to trajectory deviation. The core function of the limiting block 41 is to limit the head of the bolt body 100. By fitting and contacting the head of the bolt body 100, it restricts the axial movement of the bolt body 100 in that direction, forming a bidirectional axial constraint with the top plate 32.

[0025] refer to Figure 1 , Figure 2 and Figure 3 As shown, the clamping unit 2 also includes a second slider 221 installed at the bottom of the moving part 22, and the second slider 221 slides in cooperation with the first slide rail 11. A "V"-shaped groove is provided at the center of the clamping block 23 to adapt to the end of the bolt body 100. The "V"-shaped groove at the center of the clamping block 23 has two advantages: first, utilizing the self-centering characteristic of the "V"-shaped surface, regardless of the diameter of the bolt body 100 to be processed, the inclined surfaces on both sides of the "V"-shaped groove can form a close contact with the end of the bolt, automatically correcting the bolt axis position and ensuring that the axis of the bolt body 100 remains coaxial with the tapping tool axis, avoiding thread processing deviations caused by axis offset; second, the "V"-shaped groove can increase the contact area between the clamping block 23 and the bolt body 100, improving the uniformity of radial clamping force and effectively preventing radial rotation or offset of the bolt body 100 during tapping.

[0026] A mounting plate 12 is fixed to one end of the base plate 1 away from the moving member 22. A second slide rail 13 is provided along the length of the base plate 1 at the center of its top. The clamping unit 2 also includes a sliding member 21 that can reciprocate on the top of the second slide rail 13. The bottom of the sliding member 21 is provided with a first slider 211 that can cooperate with the second slide rail 13. Two movably connected transmission rods 25 are provided on both sides of the top of the sliding member 21, and the transmission rods 25 are connected to the moving member 22. The clamping unit 2 also includes a first telescopic drive member 24 fixed on the mounting plate 12, and the output end of the first telescopic drive member 24 passes through the mounting plate 12 and is connected to the sliding member 21.

[0027] The first telescopic drive component 24 is activated, outputting a linear driving force to move the sliding component 21. At this time, the first slider 211 at the bottom of the sliding component 21 cooperates with the second slide rail 13 to ensure that the sliding component 21 moves smoothly along a straight line. The transmission rods 25 on both sides of the top of the sliding component 21 move with the sliding component 21. Since the two ends are hinged to the sliding component 21 and the moving component 22 respectively, the transmission rods 25 rotate around the hinge point, converting the motion of the sliding component 21 into the synchronous motion of the two moving components 22. The second sliders 221 at the bottom of the two moving components 22 slide along the first slide rail 11 in a direction that brings them closer to each other until the "V" groove spacing of the two clamping blocks 23 is aligned with the screw to be processed. With the diameter of the bolt body 100 adapted, the bolt body 100 is placed between the "V"-shaped grooves of the two clamping blocks 23. The first telescopic drive component 24 is activated again, causing it to output a small driving force to push the sliding component 21 to continue moving. Through the transmission rod 25, the two moving components 22 are driven to move closer together. The "V"-shaped groove of the clamping block 23 fits against the outer circular surface of the bolt body 100. With the self-centering characteristic of the "V"-shaped surface, the axis of the bolt body 100 is automatically aligned with the axis of the tapping tool. As the clamping force increases, the "V"-shaped groove forms a large area of ​​tight contact with the outer circular surface of the bolt. Under the action of radial clamping force, the bolt body 100 is firmly fixed, preventing its radial displacement or rotation.

[0028] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A quick-clamping assembly for tapping bolts of various specifications, used to fix the bolt body (100) upon entry into the machine, characterized in that: include The base plate (1) is installed on the worktable of the tapping machine; A clamping unit (2) is provided on the top of the base plate (1) for clamping the bolt body (100). The bolt return assembly (3) is mounted on the clamping unit (2) and abuts against the end of the bolt body (100); The limiting assembly (4) has two sets and is disposed on the clamping unit (2) to limit the head of the bolt body (100); A first slide rail (11) is fixed on one side of the top of the base plate (1) along its width direction. The clamping unit (2) includes two moving parts (22) that can slide back and forth on the top of the first slide rail (11). Each of the two moving parts (22) is fixed with a clamping block (23) for fixing the bolt body (100). Each set of limiting components (4) is installed on the moving parts (22). The limiting component (4) includes a limiting block (41) that can move back and forth on the clamping block (23) and can limit the end of the bolt body (100). The bolt return assembly (3) includes a return plate (32) that can move back and forth along the axial direction of the bolt body (100) and can abut against the end of the bolt body (100).

2. The tapping quick clamping assembly for adapting multi-specification bolts according to claim 1, characterized in that: Each moving part (22) has a first sliding groove (222) and the clamping block (23) has a second sliding groove (231). The first sliding groove (222) and the second sliding groove (231) are connected to each other, and the limiting block (41) can reciprocate in the first sliding groove (222) and the second sliding groove (231).

3. The tapping quick clamping assembly for adapting multi-specification bolts according to claim 1, characterized in that: The limiting component (4) also includes a fixing clip (43) installed on the back of the moving part (22), and a third telescopic drive (42) for driving the limiting block (41) to reciprocate is installed on the fixing clip (43).

4. The tapping quick clamping assembly for adapting multi-specification bolts according to claim 1, characterized in that: The clamping unit (2) further includes a second slider (221) installed at the bottom of the moving part (22), and the second slider (221) slides in cooperation with the first slide rail (11).

5. The tapping quick clamping assembly for adapting multi-specification bolts according to claim 2, characterized in that: The clamping block (23) has a "V" shaped groove at its center that can adapt to the end of the bolt body (100).

6. A tapping quick clamping assembly for adapting multi-specification bolts according to claim 1, characterized in that: A mounting plate (12) is fixed on one end of the base plate (1) away from the moving part (22). A second slide rail (13) is provided at the center of the top of the base plate (1) along its length. The clamping unit (2) also includes a sliding part (21) that can reciprocate on the top of the second slide rail (13). A first slider (211) that can cooperate with the second slide rail (13) is provided at the bottom of the sliding part (21). Two movably connected transmission rods (25) are also provided on both sides of the top of the sliding part (21). The transmission rods (25) are connected to the moving part (22).

7. A tapping quick clamping assembly for adapting multi-specification bolts according to claim 6, characterized in that: The clamping unit (2) further includes a first telescopic drive member (24) fixed on the mounting plate (12), and the output end of the first telescopic drive member (24) passes through the mounting plate (12) and is connected to the slider (21).

8. The tapping quick clamping assembly for adapting multi-specification bolts according to claim 6, characterized in that: The bolt retracting assembly (3) further comprises a fixed plate (31) fixed on the upper portion of the sliding member (21), a second telescopic driving member (33) is connected to the fixed plate (31), and the output end of the second telescopic driving member (33) is connected with a retracting plate (32).

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