Sheet machining clamping tool and clamping method thereof

Abstract

The invention discloses a sheet machining clamping tool and a clamping method thereof.The sheet machining clamping tool comprises a base, the two sides of the base are each provided with two clamping blocks in a matched mode, the two clamping blocks are fixedly connected with the base through locking shafts, the base and the clamping blocks are provided with an assembly hole and a through hole which are convenient for the locking shafts to penetrate through respectively, and the locking shafts are in clearance fit with the assembly holes; first inclined planes which are symmetrical to each other are arranged on the two sides of the base located below the assembly hole, second inclined planes which are in sliding fit with the first inclined planes are arranged at the lower ends of the clamping blocks, tong heads used for clamping a thin plate are arranged at the upper ends of the clamping blocks, and the two tong heads are oppositely arranged on the two sides of the top face of the base; according to the scheme, through cooperation of the base and the two clamping blocks, the two clamp heads can abut against each other to clamp a thin plate and tightly press the thin plate on the top face of the base, so that rapid clamping and positioning of the thin plate are achieved, reliability and machining precision during thin plate machining are improved, the quality of thin plate batch machining is remarkably improved, and the machining cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a thin plate processing clamping tool and a clamping method thereof. Background Art

[0002] Usually in the processing of thin plate parts of mechanical parts, we often encounter some plate structural parts that are difficult to clamp. Since it involves clamping at a thinner position, two pieces of extruded iron with inclined surfaces or similar methods are usually used for top clamping. However, instability is very likely to occur during clamping, and parts are prone to pop out of the processing work area, which will affect the dimensional accuracy and positional accuracy of the parts. Therefore, how to prevent thin plate parts from displacement, bending, hollowing, etc. during the clamping process is the key to solving such problems. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a thin plate processing clamping tool and a clamping method thereof, which solves the problem of poor stability of thin plate parts during clamping and positioning.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] In the first aspect, a thin plate processing clamping tool is provided, which includes a base, two clamping blocks are respectively matched on both sides of the base, and the two clamping blocks are fastened to the base through a locking shaft, the base and the clamping block are respectively provided with an assembly hole and a through hole for the locking shaft to pass through, and the locking shaft is gap-matched with the assembly hole, and mutually symmetrical first inclined surfaces are provided on both sides of the base below the assembly hole, a second inclined surface slidably fitted with the first inclined surface is provided at the lower end of the clamping block, and a clamp head for clamping the thin plate is provided at the upper end of the clamping block, and the two clamp heads are arranged facing each other on both sides of the top surface of the base.

[0006] Furthermore, a limiting hole connected to and perpendicular to the assembly hole is provided in the middle of the base, an anti-rotation pin is passed through the limiting hole, and a notch groove for abutting against the anti-rotation pin is opened on the side wall of the middle part of the locking shaft.

[0007] Furthermore, the pliers head is a cone head consisting of an inclined upper mold surface and a lower mold surface, the lower mold surface is provided with stripes, and the side where the two clamping blocks are close to each other is a concave surface consisting of the lower mold surface, the inner side surface of the clamping block and the second inclined surface.

[0008] Furthermore, a vertical clamping surface is arranged on the clamping block located above the upper molding surface, and the two vertical clamping surfaces are arranged facing each other.

[0009] Furthermore, the two first inclined surfaces are arranged in an inverted figure eight shape.

[0010] Furthermore, concave step holes are provided at both ends of the assembly hole and at the end of the through hole close to the assembly hole, and two springs are sleeved on the locking shaft, and both ends of the springs are respectively abutted against the two concave step holes between the assembly hole and the through hole.

[0011] Furthermore, a butt joint is provided at one end of the locking shaft, a spherical step is provided at the inner end of the butt joint, an external thread is provided at the other end of the locking shaft, a locking nut and a spherical pad are matched on the external thread, and spherical holes matching the spherical step and the spherical pad are provided at the ports of the two through holes away from the assembly hole.

[0012] In a second aspect, a clamping method for a thin plate processing clamping tool is provided, which comprises the following steps:

[0013] S1: Assemble the thin plate processing clamping tooling and fix the base on the workbench;

[0014] S2: Place the thin plate to be clamped on the top surface of the base. The operator presses the thin plate with one hand to make its bottom surface fit to the top surface of the base, and turns the locking nut with the other hand to make the two clamping blocks gradually approach each other and the second inclined surface fits the first inclined surface and slides on the first inclined surface until the lower surface of the clamp head clamps the thin plate and presses the thin plate tightly against the top surface of the base.

[0015] Furthermore, before executing step S1, the thin plate to be clamped and the inner and outer surfaces of each assembly component are cleaned with washing gasoline or alcohol; and grease is dipped into a silk cloth and applied to the inner surface of the assembly hole, the first bevel, the second bevel, the spherical step and the surface of the spherical pad.

[0016] Furthermore, the base and the clamping block are made of 30CrMnSiA alloy steel, and after being subjected to quenching and tempering heat treatment, the surfaces of the base and the clamping block are chrome-plated.

[0017] The beneficial effects of the present invention are:

[0018] Through the cooperation of the base and the two clamping blocks, this solution can enable the two clamp heads to clamp the thin plate against each other and press the thin plate against the top surface of the base, thereby realizing rapid clamping and positioning of the thin plate. Compared with the tooling of simple top clamping, this solution can achieve more stable clamping and positioning for flat thin plates, angle thin plates, inclined thin plates, etc., making the thin plates less likely to shift, thereby improving the reliability and processing accuracy of the thin plates during processing, significantly improving the quality of batch processing of thin plates, and reducing processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the clamping tooling for thin plate processing.

[0020] Figure 2 This is an exploded view of the clamping fixture for thin plate processing.

[0021] Figure 3 Side view of the clamping fixture for thin plate processing.

[0022] Figure 4 It is a schematic diagram of the structure of the locking shaft.

[0023] Figure 5 A cross-sectional view of the clamping block.

[0024] Among them, 1. base, 2. clamping block, 3. locking shaft, 4. assembly hole, 5. through hole, 6. first inclined surface, 7. second inclined surface, 8. clamp head, 9. limit hole, 10. anti-rotation pin, 11. notch groove, 12. upper profile, 13. lower profile, 14. vertical clamp surface, 15. concave step hole, 16. spring, 17. abutment, 18. spherical step, 19. external thread, 20. locking nut, 21. spherical pad, 22. spherical hole. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0026] like Figures 1 to 3 As shown, the thin plate processing clamping tool of the present scheme includes a base 1, two clamping blocks 2 are respectively matched on both sides of the base 1, and the two clamping blocks 2 are fastened to the base 1 through a locking shaft 3, and the base 1 and the clamping block 2 are respectively provided with an assembly hole 4 and a through hole 5 for the locking shaft 3 to pass through, and the locking shaft 3 is clearance-matched with the assembly hole 4, and mutually symmetrical first inclined surfaces 6 are provided on both sides of the base 1 located below the assembly hole 4, and the two first inclined surfaces 6 are arranged in an inverted eight shape, and the lower end of the clamping block 2 is provided with a second inclined surface 7 that slides in contact with the first inclined surface 6, and the upper end of the clamping block 2 is provided with a clamp head 8 for clamping the thin plate, and the two clamp heads 8 are arranged facing each other on both sides of the top surface of the base 1.

[0027] As an optional implementation, Figure 2 and Figure 4As shown, a limiting hole 9 connected to and perpendicular to the assembly hole 4 is provided in the middle of the base 1, and the limiting hole 9 and the assembly hole 4 are both arranged horizontally, an anti-rotation pin 10 is passed through the limiting hole 9, and a notch groove 11 for abutting against the anti-rotation pin 10 is opened on the side wall of the middle part of the locking shaft 3; in particular, in order to reserve a displacement gap in the vertical direction between the locking shaft 3 and the assembly hole 4, the anti-rotation pin 10 is not in contact with the bottom surface of the notch groove 11, but the anti-rotation pin 10 abuts against the side edge of the notch groove 11, so that the locking shaft 3 is prevented from rotating, and when the locking shaft 3 needs to be displaced downward, the locking shaft 3 can automatically rotate under the action of the downward driving force and make the bottom surface of the notch groove 11 abut against the anti-rotation pin 10, thereby generating a downward displacement gap for the locking shaft 3.

[0028] As an optional implementation, Figure 2 and Figure 4 As shown, one end of the locking shaft 3 is provided with a butt joint 17, and the inner end of the butt joint 17 is provided with a spherical step 18, and the other end of the locking shaft 3 is provided with an external thread 19, and the external thread 19 is matched with a locking nut 20 and a spherical pad 21, and the two through holes 5 are provided at the ends away from the assembly hole 4 with spherical holes 22 respectively matched with the spherical step 18 and the spherical pad 21; the purpose of such a setting is to cooperate with the first inclined surface 6 and the second inclined surface 7, so as to achieve uniform and stable floating clamping of the thin plate.

[0029] As an optional implementation, Figure 5 As shown, the pliers head 8 is a conical head composed of an inclined upper mold surface 12 and a lower mold surface 13, and stripes are provided on the lower mold surface 13, which can be horizontal or oblique stripes. The side where the two clamping blocks 2 are close to each other is a concave surface composed of the lower mold surface 13, the inner side surface of the clamping block 2 and the second inclined surface 7.

[0030] As an optional implementation, Figure 2 and Figure 5 As shown, concave step holes 15 are provided at both ends of the assembly hole 4 and at the end of the through hole 5 close to the assembly hole 4, and two springs 16 are sleeved on the locking shaft 3, and the two ends of the spring 16 are respectively abutted against the two concave step holes 15 between the assembly hole 4 and the through hole 5; the two springs 16 can be uniformly tightened or rebounded axially with their respective concave step holes 15 as support, so as to facilitate the rebound reset of the clamping block 2.

[0031] The following is a detailed description of the working principle of this solution:

[0032] When clamping and positioning the thin plate, the clamping block 2 can be gradually brought together by rotating the locking nut 20, so that the lower mold surfaces 13 of the two clamp heads 8 clamp the thin plate placed on the top surface of the base 1 facing each other. At the same time, due to the existence of the first inclined surface 6 and the second inclined surface 7, the clamping block 2 gradually moves together, and the second inclined surface 7 slides on the first inclined surface 6 and drives the clamping block 2 to move obliquely downward along the direction of the first inclined surface 6, so that the lower mold surfaces 13 of the two clamp heads 8 squeeze and pull down the thin plate, thereby clamping and pressing the thin plate against the top surface of the base 1, forming a stable and reliable clamping.

[0033] In particular, the length of the clamp head 8 and the width of the clamp head 8 can be modified accordingly according to actual conditions. If conditions permit, it can be designed as a replaceable component to accommodate the clamping of more thin plate parts.

[0034] As an optional embodiment, a vertical clamp surface 14 is provided on the clamping block 2 located above the upper mold surface 12, and the two vertical clamp surfaces 14 are arranged facing each other; when a thin plate that is thicker and not easy to deform only needs to be clamped against the top, the thin plate can be placed on the two clamp heads 8, and the two vertical clamp surfaces 14 can be used to achieve the top clamping of the thin plate.

[0035] The present invention also provides a clamping method for a thin plate processing clamping tool, which comprises the following steps:

[0036] S0: Use washing gasoline or alcohol to clean the inner and outer surfaces of the thin plate to be clamped and each assembly component; and use a silk cloth to dip in grease and apply it to the inner surface of the assembly hole 4, the first inclined surface 6, the second inclined surface 7, the spherical step 18 and the surface of the spherical pad 21;

[0037] S0: Use washing gasoline or alcohol to clean the inner and outer surfaces of the thin plate to be clamped and each assembly component; and use a silk cloth to dip the grease and apply it to the inner surface of the assembly hole 4, the first inclined surface 6, the second inclined surface 7, the spherical step 18 and the surface of the spherical pad 21;

[0038] S1: Assemble the thin plate processing clamping tooling and fix the base 1 on the workbench; the assembly process specifically includes: inserting the locking shaft 3 into the through hole 5 of the clamping block 2, and then inserting the spring 16; then inserting the locking shaft 3 into the assembly hole 4 of the base 1, and then sequentially introducing the spring 16, the clamping block 2, the spherical pad 21, and the locking shaft 3; when the two springs 16 have fallen into the corresponding concave step holes 15, keep the second inclined surface 7 of the clamping block 2 and the first inclined surface 6 of the base 1 in abutment, and screw the locking nut 20 into the external thread 19 of the locking shaft 3; adjust the position of the notch groove 11 on the locking shaft 3, and insert the anti-rotation pin 10 into the limit hole 9; manually clamp the clamping blocks 2 at both ends, visually observe the spring 16 and the clamping block 2, so that the clamping block 2 can be kept flexible and can be tensioned on the left and right;

[0039] S2: Place the thin plate to be clamped on the top surface of the base 1. The operator presses the thin plate with one hand to make its bottom surface fit to the top surface of the base 1, and turns the locking nut 20 with the other hand to make the two clamping blocks 2 gradually approach each other and the second inclined surface 7 fits the first inclined surface 6 and slides on the first inclined surface 6 until the lower mold surface 13 of the clamp head 8 clamps the thin plate and presses the thin plate tightly against the top surface of the base 1.

[0040] As an optional embodiment, the base 1 and the clamping block 2 are both made of 30CrMnSiA alloy steel, and after tempering heat treatment, the surfaces of the base 1 and the clamping block 2 are chrome-plated; to obtain good comprehensive mechanical properties, stable structural dimensions and certain anti-corrosion functions, while having certain strength and hardness, which can effectively prevent the material from oxidation and rusting.

[0041] To sum up, in this solution, through the cooperation between the base 1 and the two clamping blocks 2, the two clamp heads 8 can clamp the thin plate against each other and press the thin plate against the top surface of the base 1, thereby realizing rapid clamping and positioning of the thin plate; at the same time, this solution can realize more stable clamping and positioning of flat thin plates, angled thin plates, inclined thin plates, etc., so that the thin plates are not easy to shift, thereby improving the reliability and processing accuracy of the thin plates during processing, so that the quality of batch processing of thin plates can be significantly improved, and the processing cost can be reduced.

Claims

1. A thin plate processing clamping tool, characterized in that: It includes a base, two clamping blocks are respectively matched on both sides of the base, and the two clamping blocks are fastened to the base through a locking shaft, the base and the clamping block are respectively provided with an assembly hole and a through hole for the locking shaft to pass through, and the locking shaft and the assembly hole are clearance-matched, and first inclined surfaces symmetrical to each other are provided on both sides of the base below the assembly hole, and a second inclined surface slidingly fitted with the first inclined surface is provided at the lower end of the clamping block, and a clamp head for clamping a thin plate is provided at the upper end of the clamping block, and the two clamp heads are arranged facing each other on both sides of the top surface of the base.

2. The thin plate processing clamping tool according to claim 1, characterized in that: A limiting hole connected to and perpendicular to the assembly hole is provided in the middle of the base, an anti-rotation pin is passed through the limiting hole, and a notch groove for abutting against the anti-rotation pin is opened on the side wall of the middle part of the locking shaft.

3. The thin plate processing clamping tool according to claim 1, characterized in that: The pliers head is a cone head consisting of an inclined upper mold surface and a lower mold surface, the lower mold surface is provided with stripes, and the side where the two clamping blocks are close to each other is a concave surface consisting of the lower mold surface, the inner side surface of the clamping block and the second inclined surface.

4. The thin plate processing clamping tool according to claim 3, characterized in that: The clamping block located above the upper molding surface is provided with vertical clamping surfaces, and the two vertical clamping surfaces are arranged facing each other.

5. The thin plate processing clamping tool according to claim 1, characterized in that: The two first inclined surfaces are arranged in an inverted figure eight shape.

6. The thin plate processing clamping tool according to claim 1, characterized in that: Concave step holes are arranged at both ends of the assembly hole and at the end of the through hole close to the assembly hole. Two springs are sleeved on the locking shaft, and the two ends of the spring are respectively abutted against the two concave step holes between the assembly hole and the through hole.

7. The thin plate processing clamping tool according to claim 1, characterized in that: One end of the locking shaft is provided with a butt joint, the inner end of the butt joint is provided with a spherical step, the other end of the locking shaft is provided with an external thread, the external thread is matched with a locking nut and a spherical pad, and spherical holes respectively matched with the spherical step and the spherical pad are provided at the ports of the two through holes away from the assembly hole.

8. A clamping method using the thin plate processing clamping tool as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Assemble the thin plate processing clamping tooling and fix the base on the workbench; S2: Place the thin plate to be clamped on the top surface of the base. The operator presses the thin plate with one hand to make its bottom surface fit to the top surface of the base, and turns the locking nut with the other hand to make the two clamping blocks gradually approach each other and the second inclined surface fits the first inclined surface and slides on the first inclined surface until the lower surface of the clamp head clamps the thin plate and presses the thin plate tightly against the top surface of the base.

9. The clamping method of the thin plate processing clamping tool according to claim 8, characterized in that: Before executing step S1, the thin plate to be clamped and the inner and outer surfaces of each assembly component are cleaned with washing gasoline or alcohol; and grease is dipped into a silk cloth and applied to the inner surface of the assembly hole, the first bevel, the second bevel, the spherical step and the surface of the spherical pad.

10. The clamping method of the thin plate processing clamping tool according to claim 8, characterized in that: The base and the clamping block are made of 30CrMnSiA alloy steel, and after being quenched and tempered, the surfaces of the base and the clamping block are chrome-plated.

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