Clamp for turning sheet material

Abstract

The utility model discloses a thin sheet material turning clamp, which relates to the field of machining, and comprises a main shaft, a left chuck, a right chuck and an ejector pin, one end of the main shaft is inserted into the left chuck, the right chuck is arranged on one side of the left chuck, and rubber pads are arranged on the opposite sides of the left chuck and the right chuck. The left chuck is provided with a rubber pad, the right chuck is provided with a rubber pad, a gap is formed between the rubber pad of the left chuck and the rubber pad of the right chuck, a mounting hole is formed in the center of the right chuck, and an ejector pin is arranged on one side, far away from the left chuck, of the right chuck. The problem that the number of products is small but the specifications are multiple is effectively solved, the production flexibility is improved, the overall light-weight design is adopted, hard connection such as complex screws is not needed, the structure is simplified, and the material cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing, in particular to a clamp for turning thin sheet materials. Background Art

[0002] In the field of material processing, especially for the processing of circular thin sheet materials, traditional processing methods such as blanking and laser cutting have their own advantages, but they are unable to meet specific requirements such as high precision and high scrap recovery rate of precious metal target products.

[0003] The punching and forming method requires the design of separate molds for circular workpieces of different diameters, which not only increases production costs but also prolongs the production cycle and cannot flexibly respond to diverse production needs. Secondly, the edges of the products after punching often have a collapsed edge (arc-shaped) phenomenon, which makes it difficult to meet the processing needs of parts with high edge precision requirements.

[0004] Although laser cutting has great flexibility in processing shapes, it also causes large material losses, which is costly for materials with strict requirements on waste recovery rates. Utility Model Content

[0005] In order to make up for the shortcomings of the existing technical problems, the purpose of this utility model is to provide a fixture for turning thin sheet materials, and the technical problems to be solved are as follows: how to design a turning fixture suitable for circular thin sheet materials of various specifications, and how to ensure the clamping accuracy and stability of thin sheet materials during the turning process.

[0006] In order to solve the problems of the prior art, the technical solutions of the present utility model are as follows:

[0007] A fixture for turning thin sheet materials includes a spindle, a left chuck, a right chuck and an ejector pin, one end of the spindle is inserted into the left chuck, a right chuck is provided on one side of the left chuck, rubber pads are provided on the sides opposite to the left and right chucks, a gap is provided between the rubber pads of the left and right chucks, a mounting hole is provided at the center of the right chuck, and an ejector pin is provided on the side of the right chuck away from the left chuck, one end of the ejector pin is fixedly connected to the mounting hole.

[0008] Preferably, a through hole is provided inside the spindle. The built-in through hole achieves a weight reduction effect, making the operation process more convenient and reducing the burden on the operator. Secondly, the through hole can save material removal during spindle production and reduce the cost of spindle processing.

[0009] Preferably, the main shaft and the left chuck are clearance-matched, so that the two can be quickly aligned and easily installed during the assembly process. At the same time, this design also eliminates the need for hard connections such as screws, greatly facilitating the disassembly process. The entire clamping process therefore becomes simpler and more efficient, thereby significantly improving work efficiency.

[0010] Preferably, the end of the spindle inserted into the left chuck is provided with a chamfer, which plays a key guiding role in the assembly process of the spindle and the left chuck, ensuring that the spindle can be smoothly and unobstructedly inserted into the left chuck, thereby effectively reducing the wear and resistance caused by friction, extending the service life of the equipment and improving assembly efficiency.

[0011] Preferably, the outer wall of the other end of the spindle is knurled, and the knurling enhances the friction between the spindle and the machine tool chuck, ensuring that the spindle can be firmly clamped on the machine tool chuck, effectively preventing it from falling off due to vibration or impact during processing, and ensuring the stability and safety of processing.

[0012] Preferably, mesh grooves are provided on the opposite sides of the left chuck and the right chuck. The presence of these grooves increases the contact area and friction between the end face of the chuck and the rubber pad, so that the rubber pad can fit more tightly and firmly on the chuck, thereby improving the stability of the clamping and preventing the workpiece from loosening or shifting due to vibration or impact during processing.

[0013] Preferably, both sides of the rubber pad are provided with patterns, and the patterns increase the contact area and friction between the rubber pad and the workpiece and the chuck.

[0014] Compared with the prior art, the advantages of the present invention are as follows:

[0015] This new fixture is suitable for circular sheet materials of varying thicknesses and specifications, eliminating the need for separate mold designs for each size of workpiece. This effectively solves the problem of a small production run but a wide variety of specifications, improving production flexibility. The overall lightweight design eliminates the need for complex hard connections such as screws, simplifying the structure and reducing material costs. Furthermore, by improving clamping accuracy, the size of the blank is effectively reduced, further saving on raw material costs.

[0016] The thin material is clamped by tightening on both sides. Combined with the pattern design of the left and right rubber pads, the friction force is significantly increased, ensuring that the workpiece is not easy to slip or move during clamping, improving the stability and safety of processing. The clearance fit design between the spindle and the left chuck makes the clamping accuracy higher. By adjusting the position of the workpiece center line and the spindle axis, the two are kept as close as possible, thereby reducing processing errors and improving the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the main shaft structure of the utility model;

[0019] Figure 3This is a schematic structural diagram of the left chuck and the right chuck of the present utility model;

[0020] Figure 4 This is a schematic diagram of the right chuck and ejector structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the disassembled right chuck and ejector structure of the utility model.

[0022] Figure numerals: 1, spindle; 2, left chuck; 3, right chuck; 4, rubber pad; 5, ejector pin; 6, through hole; 7, mounting hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] The fixture for turning thin sheet materials comprises a spindle 1, a left chuck 2, a right chuck 3 and an ejector pin 5;

[0025] like Figures 1 to 5 As shown, one end of the spindle 1 is inserted into the left chuck 2, and a right chuck 3 is provided on one side of the left chuck 2. Rubber pads 4 are provided on the opposite sides of the left chuck 2 and the right chuck 3. A gap is provided between the rubber pads 4 of the left chuck 2 and the right chuck 3. A mounting hole 7 is provided at the center of the right chuck 3. A thimble 5 is provided on the side of the right chuck 3 away from the left chuck 2, and one end of the thimble 5 is fixedly connected to the mounting hole 7.

[0026] The spindle 1 is securely clamped to the machine tool's jaws using the knurled design on its left end. The left chuck 2 is installed to the right side of the spindle 1. The concave design on the left side of the left chuck 2 allows it to fit tightly against the spindle 1. The right side of the thimble 5 is fixed to the thimble seat of the machine tool. A rubber pad 4 is attached to the side opposite the left chuck 2 and the right chuck 3. The workpiece is clamped between the rubber pads 4 of the left chuck 2 and the right chuck 3 to ensure the correct and secure positional relationship between the components.

[0027] Then, this overall structure is gently inserted into the spindle 1, and by shaking the crank handle of the thimble seat, the thimble 5 is gradually pushed into the center mounting hole 7 of the right chuck 3 to initially tighten the workpiece. At this time, the operator can gently tap the workpiece to further adjust the position of its center line and the axis of the spindle 1 to ensure that they are as close as possible to achieve the highest clamping accuracy. Finally, continue to turn the crank handle of the thimble seat until the workpiece is firmly fixed and the clamping is completed.

[0028] like Figures 1 to 5As shown, a through hole 6 is provided inside the spindle 1, which reduces the overall weight of the spindle 1 in a hollow manner, making it lighter and easier for personnel to operate during operation. At the same time, the existence of the through hole 6 also helps to dissipate heat, reduce heat accumulation caused by long-term processing, and improve processing stability and safety.

[0029] like Figures 1 to 5 As shown, the spindle 1 and the left chuck 2 are clearance-fitted, so that the two can be easily aligned and quickly installed during assembly. It is also easy to disassemble, avoiding the use of hard connections such as screws, simplifying the clamping process, and improving work efficiency.

[0030] like Figures 1 to 5 As shown, one end of the spindle 1 inserted into the left chuck 2 is provided with a chamfer, which can play a guiding role, so that the spindle 1 can be inserted into the left chuck 2 smoothly and without obstruction, reducing wear and resistance caused by friction.

[0031] like Figures 1 to 5 As shown, the outer wall of the other end of the spindle 1 is knurled to increase the friction between the spindle 1 and the machine tool chuck, so that the spindle 1 can be clamped more securely on the machine tool chuck to prevent it from falling off due to vibration or impact during processing.

[0032] like Figures 1 to 5 As shown, mesh grooves are provided on the opposite sides of the left chuck 2 and the right chuck 3. The mesh grooves are used to increase the friction between the end faces of the chucks and the rubber pads 4, so that the rubber pads 4 can fit more closely on the chucks, thereby improving the stability of the clamping.

[0033] like Figures 1 to 5 As shown, patterns are provided on both sides of the rubber pad 4. The patterns increase the friction between the rubber pad 4 and the workpiece and the chuck, preventing the workpiece from loosening or falling off due to vibration or impact during the processing. The patterns can also improve the anti-slip performance of the rubber pad 4, making the clamping more secure.

[0034] 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 fixture for turning thin sheet materials, characterized in that: include: A main shaft (1), a left chuck (2), a right chuck (3) and an ejector pin (5), one end of the main shaft (1) is inserted into the left chuck (2), a right chuck (3) is provided on one side of the left chuck (2), a rubber pad (4) is provided on the opposite side of the left chuck (2) and the right chuck (3), a gap is provided between the rubber pads (4) of the left chuck (2) and the right chuck (3), a mounting hole (7) is provided at the center of the right chuck (3), a ejector pin (5) is provided on the side of the right chuck (3) away from the left chuck (2), and one end of the ejector pin (5) is fixedly connected to the mounting hole (7).

2. The fixture for turning sheet materials according to claim 1, characterized in that: A through hole (6) is provided inside the main shaft (1).

3. The fixture for turning sheet materials according to claim 1, characterized in that: The main shaft (1) and the left chuck (2) are clearance-fitted.

4. The fixture for turning sheet materials according to claim 1, characterized in that: One end of the spindle (1) inserted into the left chuck (2) is provided with a chamfer.

5. The fixture for turning sheet materials according to claim 4, characterized in that: The outer wall of the other end of the main shaft (1) is knurled.

6. The fixture for turning sheet materials according to claim 1, characterized in that: A mesh-shaped sliding groove is provided on the side opposite to the left chuck (2) and the right chuck (3).

7. The fixture for turning sheet materials according to claim 1, characterized in that: Both sides of the rubber pad (4) are provided with patterns.

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