Clamping tool for U-shaped bolt machining

Abstract

The utility model relates to the technical field of U-shaped bolt machining, in particular to a clamping tool for U-shaped bolt machining, which comprises a workbench, a clamping base is mounted on the workbench, a clamping block and a hydraulic cylinder are arranged on the clamping base, and the hydraulic cylinder is used for driving the clamping block to be matched with the clamping base to clamp the middle of a bolt raw material and expose the two ends of the bolt raw material. A linear displacement sensor for detecting the position of a bolt raw material is arranged on the workbench, one end of the linear displacement sensor is fixed on the workbench, one end of a stretchable probe is connected with a limiting plate, and the limiting plate is used for blocking one end of the bolt raw material. The device has the advantages of automatically clamping and simultaneously processing threads at two ends of the U-shaped bolt, improving the processing efficiency and reducing the processing cost, and solves the problems that the manual operation efficiency is low, the safety risk exists and the labor cost is increased in the process of processing the threads on the U-shaped bolt in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of U-bolt processing, in particular to a clamping tool for processing U-bolts. Background Art

[0002] U-bolts, named for their U-shaped shape, feature threads at both ends for connection to nuts. They are commonly used in trucks to stabilize the chassis and frame. Leaf springs, for example, are connected using U-bolts. U-bolts are typically made from cold-drawn round steel, a material often used for its smooth surface, high dimensional accuracy, and superior mechanical properties. After being cut to length using a cutting machine, the steel requires threading and then bending using a bolt bending machine.

[0003] In the existing technology, during the thread processing process, it is necessary to manually insert one end of the bolt into the threading machine to process the thread, and then insert the other end into the threading machine to process the thread on the other end. This operation is inefficient and manual operation poses safety risks, which increases labor costs. For this reason, we propose a clamping tool for U-bolt processing. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping tool for processing U-bolts, which has the advantages of automatically clamping and simultaneously processing threads on both ends of the U-bolt, thereby improving processing efficiency and reducing processing costs. It solves the problems of low manual operation efficiency, safety risks and increased labor costs in the existing U-bolt thread processing process.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a clamping tool for processing U-bolts, comprising a workbench, a clamping base mounted on the workbench, a clamping block and a hydraulic cylinder provided on the clamping base, the hydraulic cylinder being used to drive the clamping block to cooperate with the clamping base to clamp the middle portion of the bolt stock, leaving both ends of the bolt stock exposed;

[0006] A linear displacement sensor for detecting the position of the bolt raw material is provided on the workbench. One end of the linear displacement sensor is fixed on the workbench, and one end of the stretchable probe is connected to a limit plate, which is used to block one end of the bolt raw material.

[0007] Preferably, a support is fixedly connected to the side of the clamping base, a connecting rod is welded to the back of the clamping block, and the connecting rod is rotatably connected to the support via a rotating shaft;

[0008] The telescopic end of the hydraulic cylinder is connected to the connecting rod and is used to drive the connecting rod to rotate along the rotating shaft.

[0009] Preferably, the hydraulic cylinder is installed inside the clamping base, and its telescopic end is connected to a push rod, which is inserted into the slide groove of the connecting rod. The hydraulic cylinder is used to push the push rod, and drives the connecting rod and the clamping block to rotate and clamp the clamping base through the push rod.

[0010] Preferably, the clamping block is connected to at least two connecting rods, the push rod is inserted into the sliding grooves of more than two connecting rods at the same time, and the outer diameter of the sliding groove of the push rod is consistent with the width of the sliding groove.

[0011] Preferably, the workbench is provided with a first slide rail and a second slide rail parallel to each other, and the clamping base is provided with pulleys inserted into the first slide rail and the second slide rail, and the pulleys are used to slide along the first slide rail and the second slide rail.

[0012] Preferably, an electric telescopic rod is installed on the workbench, and the telescopic end of the electric telescopic rod is connected to the clamping base for driving the clamping base to move along the first slide rail and the second slide rail.

[0013] Preferably, a controller is provided on the workbench, and the controller is used to control the operation of the electric telescopic rod and the hydraulic cylinder.

[0014] Preferably, a protrusion is provided on a side of the clamping block that contacts the bolt material, and a protrusion is provided in the groove of the clamping base.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model is provided with a clamping base, a clamping block and a hydraulic cylinder. The hydraulic cylinder drives the clamping block to move relative to the clamping base, thereby clamping the middle part of the bolt raw material, exposing both ends of the bolt raw material for thread processing by the threading machine. A linear displacement sensor is provided on the workbench, and the linear displacement sensor detects the position of the limit plate relative to the clamping base. When one end of the bolt raw material contacts the limit plate, it indicates that the clamping tool is located in the middle part of the bolt raw material. The exposed lengths of both ends of the bolt raw material are the same, which facilitates symmetrical processing. The position of the limit plate is adjusted according to the different bolt raw materials, thereby ensuring that the bolt raw materials contacting the limit plate are all located in the center position of the clamping tool, without the need for further adjustment. This solves the problem of low manual operation efficiency and safety risks in the existing U-bolt thread processing process, which increases labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the clamping tool of the utility model in the open state;

[0019] Figure 3 This is a schematic diagram of the clamping state structure of the clamping tool of the utility model.

[0020] In the figure: 1. Workbench; 2. Clamping base; 3. Clamping block; 4. Bolt material; 5. Support; 6. Connecting rod; 7. Rotating shaft; 8. Slide; 9. Hydraulic cylinder; 10. Push rod; 11. Linear displacement sensor; 12. Limit plate; 13. First slide rail; 14. Second slide rail; 15. Pulley; 16. Electric telescopic rod; 17. Controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3 A clamping tool for processing U-shaped bolts includes a workbench 1, a clamping base 2 is installed on the workbench 1, a clamping block 3 and a hydraulic cylinder 9 are provided on the clamping base 2, and the hydraulic cylinder 9 is used to drive the clamping block 3 to cooperate with the clamping base 2 to clamp the middle part of the bolt raw material 4, exposing the two ends of the bolt raw material 4; the hydraulic cylinder 9 drives the clamping block 3 to move relative to the clamping base 2, thereby clamping the middle part of the bolt raw material 4, exposing the two ends of the bolt raw material 4 for thread processing of the threading machine.

[0023] A linear displacement sensor 11 for detecting the position of the bolt stock 4 is provided on the workbench 1. One end of the linear displacement sensor 11 is fixed on the workbench 1, and one end of the stretchable probe is connected to a limit plate 12. The limit plate 12 is used to block one end of the bolt stock 4. By providing the linear displacement sensor 11 on the workbench 1, the linear displacement sensor 11 detects the position of the limit plate 12 relative to the clamping base 2. When one end of the bolt stock 4 contacts the limit plate 12, it indicates that the clamping tool is located in the middle of the bolt stock 4. The exposed lengths of both ends of the bolt stock 4 are the same. At this time, the hydraulic cylinder 9 extends to clamp the bolt stock 4, facilitating symmetrical processing. The position of the limit plate 12 is adjusted according to the different bolt stocks 4, thereby ensuring that the bolt stocks 4 that contact the limit plate 12 are all located in the center of the clamping tool, without the need for further adjustment. The linear displacement sensor 11 provided on the clamping base 2 can also realize the position detection of the limit plate 12 and the bolt stock 4 relative to the clamping base 2.

[0024] The clamping base 2 is fixedly connected with a support 5 on the side, and the back of the clamping block 3 is welded with a connecting rod 6, which is rotatably connected with the support 5 through a rotating shaft 7; the telescopic end of a hydraulic cylinder 9 is connected with the connecting rod 6, for driving the connecting rod 6 to rotate along the rotating shaft 7. By arranging the connecting rod 6 and the support 5, the clamping block 3 can be rotatably opened and clamped relative to the support 5, and in the opened state, the recess above the clamping base 2 is in an open state, and the bolt raw material 4 can be directly placed into the recess of the clamping base 2 from above. The clamping block 3 and the clamping base 2 are both long strip-shaped structures with arc-shaped grooves, and when the clamping block 3 clamps the bolt raw material 4 with the clamping base 2, the contact area is large and the wrapping is strong, which can improve the stability of the clamping of the bolt raw material 4 and avoid sliding during thread processing; on the other hand, it can avoid excessive pressure on the bolt raw material 4 during clamping, which can cause deformation or scratches on the bolt raw material 4.

[0025] The hydraulic cylinder 9 is installed inside the clamping base 2, and the telescopic end thereof is connected with a push rod 10, which is inserted into the sliding groove 8 of the connecting rod 6; the hydraulic cylinder 9 is used to push the push rod 10, and drive the connecting rod 6 and the clamping block 3 to rotate and clamp the clamping base 2 through the push rod 10. In addition to arranging the pulley 15 on the bottom of the clamping base 2, a recess or channel for installing the hydraulic cylinder 9 is also arranged; after the hydraulic cylinder 9 is installed, it moves linearly, drives the push rod 10 to slide in the sliding groove 8 of the connecting rod 6, and further drives the connecting rod 6 to rotate relative to the rotating shaft 7, so that the clamping block 3 clamps the bolt raw material 4.

[0026] The clamping block 3 is connected with at least two connecting rods 6, and the push rod 10 is inserted into the sliding grooves 8 of the two or more connecting rods 6, and the outer diameter of the sliding groove 8 of the push rod 10 is consistent with the width of the sliding groove 8. The arrangement of multiple connecting rods 6 can ensure the stability of the clamping block 3 during clamping and avoid deflection.

[0027] The workbench 1 is provided with a first sliding rail 13 and a second sliding rail 14 parallel to each other, and the clamping base 2 is provided with a pulley 15 inserted into the first sliding rail 13 and the second sliding rail 14, which is used to slide along the first sliding rail 13 and the second sliding rail 14. The arrangement of the sliding rail and the pulley 15 can move the clamping base 2 from the clamping station to the thread processing station, and when the linear displacement sensor 11 and the limiting plate 12 are installed on the workbench 1, after the clamping base 2 and the bolt raw material 4 are moved, the limiting plate 12 does not block the bolt raw material 4, which avoids affecting the threading machine and processing the bolt raw material 4 at the same time.

[0028] The workbench 1 is provided with an electric telescopic rod 16, the telescopic end of which is connected with the clamping base 2, for driving the clamping base 2 to move along the first sliding rail 13 and the second sliding rail 14. The electric telescopic rod 16 can automatically drive the clamping base 2 and the bolt raw material 4 to move, stop after moving to the thread processing station, and ensure the stability of the bolt raw material 4 during processing, avoiding the clamping base 2 from sliding along the sliding rail during thread processing.

[0029] The workbench 1 is provided with a controller 17, which is used to control the operation of the electric telescopic rod 16 and the hydraulic cylinder 9. The controller 17 can facilitate the staff to set data and control the operation of the clamping tool.

[0030] The side of the clamping block 3 that contacts the bolt raw material 4 is provided with a protrusion, and the groove of the clamping base 2 is provided with a protrusion. The setting of the protrusion can improve the friction force to a certain extent.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping tool for processing U-bolts, comprising a workbench (1), characterized in that: A clamping base (2) is installed on the workbench (1), and a clamping block (3) and a hydraulic cylinder (9) are provided on the clamping base (2). The hydraulic cylinder (9) is used to drive the clamping block (3) to cooperate with the clamping base (2) to clamp the middle part of the bolt material (4), thereby exposing both ends of the bolt material (4); A linear displacement sensor (11) for detecting the position of the bolt material (4) is provided on the workbench (1); one end of the linear displacement sensor (11) is fixed on the workbench (1); one end of a stretchable probe is connected to a limit plate (12); and the limit plate (12) is used to block one end of the bolt material (4).

2. A clamping tool for processing U-bolts according to claim 1, characterized in that: The side of the clamping base (2) is fixedly connected to a support (5), the back of the clamping block (3) is welded with a connecting rod (6), and the connecting rod (6) is rotatably connected to the support (5) via a rotating shaft (7); The telescopic end of the hydraulic cylinder (9) is connected to the connecting rod (6) and is used to drive the connecting rod (6) to rotate along the rotating shaft (7).

3. A clamping tool for processing U-bolts according to claim 2, characterized in that: The hydraulic cylinder (9) is installed inside the clamping base (2), and its telescopic end is connected to a push rod (10). The push rod (10) is inserted into the slide groove (8) of the connecting rod (6). The hydraulic cylinder (9) is used to push the push rod (10), and drive the connecting rod (6) and the clamping block (3) to rotate and clamp the clamping base (2) through the push rod (10).

4. The clamping tool for processing U-bolts according to claim 3, characterized in that: At least two connecting rods (6) are connected to the clamping block (3), and the push rod (10) is inserted into the slide grooves (8) of more than two connecting rods (6) at the same time, and the outer diameter of the slide groove (8) of the push rod (10) is consistent with the width of the slide groove (8).

5. The clamping tool for processing U-bolts according to claim 1, characterized in that: The workbench (1) is provided with a first slide rail (13) and a second slide rail (14) which are parallel to each other, and the clamping base (2) is provided with a pulley (15) which is inserted into the first slide rail (13) and the second slide rail (14), and the pulley (15) is used to slide along the first slide rail (13) and the second slide rail (14).

6. The clamping tool for processing U-bolts according to claim 1, characterized in that: An electric telescopic rod (16) is installed on the workbench (1), and the telescopic end of the electric telescopic rod (16) is connected to the clamping base (2) and is used to drive the clamping base (2) to move along the first slide rail (13) and the second slide rail (14).

7. The clamping tool for processing U-bolts according to claim 1, characterized in that: The workbench (1) is provided with a controller (17), and the controller (17) is used to control the operation of the electric telescopic rod (16) and the hydraulic cylinder (9).

8. The clamping tool for processing U-bolts according to claim 1, characterized in that: A protrusion is provided on the side of the clamping block (3) that contacts the bolt raw material (4), and a protrusion is provided in the groove of the clamping base (2).

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