Four-hole zero-point blind rivet clamp with taper holes

Abstract

The utility model relates to a four-hole zero-point pop-rivet clamp with taper holes, which comprises a clamp base, four pop-rivet positioning holes are formed in the clamp base at intervals in a manner of penetrating through the upper end and the lower end of the clamp base, and the connecting lines among the four pop-rivet positioning holes are square; a pop-rivet joint assembly cylinder is rotatably arranged in each pop-rivet positioning hole, each pop-rivet joint assembly cylinder is of a cylindrical structure with two open ends, and a pop-rivet joint is detachably connected in each pop-rivet joint assembly cylinder; a plurality of taper holes are formed in the inner circumferential wall of the blind rivet connector assembling cylinder along the same circumferential line, balls with the same number as the taper holes are movably arranged in the blind rivet connector assembling cylinder, and the balls can partially stretch out of the taper holes to lock the blind rivet connector or retreat from the taper holes. According to the four-hole zero-point blind rivet clamp with the taper holes, high-precision positioning and clamping can be achieved, workpiece clamping can be rapidly completed, and universality is high.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a four-hole zero-point rivet clamp with a tapered hole. Background Technology

[0002] In the conventional parts machining process, many products require multi-faceted machining, necessitating multiple clamping operations to complete each process. This leads to low production efficiency, decreased precision, and increased scrap. Furthermore, it requires repeated alignment of the parts' reference positions. In addition, a new set of tooling fixtures needs to be fabricated for each product, with numerous specifications and types that are fixed and not interchangeable, resulting in significant time and labor costs. Utility Model Content

[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a four-hole zero-point rivet clamp with a tapered hole, which can achieve high-precision positioning and clamping, and can also quickly complete workpiece clamping, with high versatility.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A four-hole zero-point rivet clamp with tapered holes includes a clamp base. Four rivet positioning holes are spaced apart at both ends of the clamp base, and the line connecting the four rivet positioning holes forms a square. A rivet connector assembly cylinder is rotatably disposed in each of the rivet positioning holes. The rivet connector assembly cylinder is a cylindrical structure open at both ends, and a rivet connector is detachably connected to the rivet connector assembly cylinder. Several tapered holes are formed along the same circumference on the inner peripheral wall of the rivet connector assembly cylinder. The rivet connector assembly cylinder contains movably disposed spheres of the same number as the tapered holes, and the spheres can partially extend out of or retract from the tapered holes.

[0006] The clamp base has a through groove along the center line of the four rivet positioning holes. A lead screw drive shaft is rotatably arranged in the through groove. Two drive sliders are respectively connected to the lead screw drive shaft by reverse threads. The two drive sliders are slidably arranged in the through groove, and each drive slider is engaged with one of the rivet joint assembly cylinders on both sides.

[0007] The lead screw drive shaft is used to drive the two drive sliders to slide in opposite directions or away from each other in the through slot, so that the two drive sliders drive the four rivet joint assembly cylinders to rotate and cause the ball part in each rivet joint assembly cylinder to extend out of the conical hole to lock the rivet joint or to exit from the conical hole.

[0008] In one embodiment, the two ends of the through groove pass through two opposite sides of the clamp base, and a lead screw bearing is provided in the middle of the through groove. The lead screw drive shaft is rotatably disposed in the lead screw bearing. The four pull pin positioning holes are respectively connected to the through groove.

[0009] In one embodiment, the outer periphery of the lead screw drive shaft is provided with two threaded segments with opposite thread directions, and the two threaded segments are symmetrically arranged with respect to the center of the lead screw drive shaft; the two drive sliders are provided with threaded holes through the through groove, and the two drive sliders are threadedly connected to the two threaded segments through their respective threaded holes; when the lead screw drive shaft is driven to rotate by an external force, the lead screw drive shaft drives the two drive sliders to slide towards each other or away from each other.

[0010] In one embodiment, drive racks are respectively provided on both sides of the two drive sliders opposite to the through groove, and a gear ring is rotatably provided on the outer peripheral side of each rivet joint assembly cylinder. Each drive slider is connected to the gear rings of the two rivet joint assembly cylinders by the drive racks on both sides. When the two drive sliders slide towards each other or away from each other, the two drive sliders drive the gear rings on the four rivet joint assembly cylinders to rotate.

[0011] In one embodiment, the length of the lead screw drive shaft is the same as the length of the through groove; one or both ports of the lead screw drive shaft are provided with an internal hex wrench position.

[0012] In one embodiment, the rivet connector assembly cylinder includes an inner cylinder body and a locking cap arranged coaxially. The inner cylinder body is fixedly disposed in the rivet positioning hole. The inner circumferential wall of the inner cylinder body has a plurality of conical holes along the same circumferential line. The locking cap is disposed on the outer side of the inner cylinder body and is fixedly connected to the inner sidewall of the rivet positioning hole. The gear ring is rotatably disposed on the locking cap and is meshed with the drive slider. An arc-shaped groove communicating with the conical holes is formed between the gear ring and the inner cylinder body. The ball is movably disposed in the arc-shaped groove. The width of the arc-shaped groove at the end near the conical hole gradually increases in the direction away from the conical hole, so that when the gear ring rotates relative to the inner cylinder body, the gear ring drives the ball part to extend out of the conical hole or retract from the conical hole into the arc-shaped groove through the arc-shaped groove.

[0013] In one embodiment, the fixture base is provided with a plurality of mounting holes for connecting to a machine tool.

[0014] In one embodiment, the clamp base is a flat, square-shaped structure.

[0015] In one embodiment, an annular groove is formed on the outer peripheral wall of the rivet joint, and the middle part of the annular groove is inclined to both sides along the axial direction.

[0016] Compared with traditional technology, the beneficial effects of the four-hole zero-point rivet clamp with tapered hole described in this utility model are:

[0017] This embodiment of the invention features four rivet positioning holes on a clamp base, with a rotatable rivet connector assembly cylinder rotatably mounted in each hole. Specifically, a lead screw drive shaft drives two drive sliders to slide relative to each other or in opposite directions, causing the two drive sliders to synchronously rotate the four rivet connector assembly cylinders. During the rotation of the rivet connector assembly cylinders, the gear ring of the locking cap rotates relative to the inner cylinder. The gear ring drives the ball portion through an arc-shaped groove to extend out of the conical hole to lock the annular groove on the rivet connector, or retracts from the conical hole into the arc-shaped groove to unlock the rivet connector. When the annular groove of the rivet connector is locked by several balls, the rivet connector is locked by being pulled in with a uniform downward force, without any lateral positioning force. Precise positioning and locking are achieved mainly by the tapered grip between the balls and the annular groove. When it is necessary to release the rivet connector, simply reverse the rotation of the lead screw drive shaft to quickly drive the balls back into the rivet connector assembly cylinder, allowing the rivet connector to be quickly pulled out of the assembly cylinder. Therefore, the four-hole zero-point rivet clamp with tapered hole according to the present utility model embodiment can achieve high-precision positioning and clamping, and can also quickly complete workpiece clamping, with high versatility.

[0018] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the four-hole zero-point rivet clamp with tapered hole of this utility model;

[0020] Figure 2 This is the second structural schematic diagram of the four-hole zero-point rivet clamp with tapered hole of this utility model;

[0021] Figure 3 for Figure 2 A cross-sectional schematic diagram of a four-hole zero-point rivet clamp with tapered holes is shown.

[0022] Figure 4 This is an exploded view of the four-hole zero-point rivet clamp with tapered hole of this utility model;

[0023] Figure 5This is a schematic diagram showing the connection between the lead screw drive shaft and the drive slider of this utility model;

[0024] Figure 6 This is a schematic diagram of the assembly cylinder of the rivet joint of this utility model;

[0025] Figure 7 This is an exploded view of the rivet joint assembly cylinder of this utility model.

[0026] 10. Fixture base; 11. Rivet positioning hole; 12. Through groove; 13. Mounting hole; 20. Rivet connector assembly cylinder; 21. Locking cap; 22. Gear ring; 23. Arc groove; 24. Sphere; 25. Inner cylinder; 26. Tapered hole; 27. Dustproof damping ring; 30. Rivet connector; 31. Annular groove; 40. Screw drive shaft; 41. Threaded section; 42. Hex wrench position; 50. Drive slider; 51. Drive rack; 52. Threaded hole. Detailed Implementation

[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this utility model.

[0029] Please see Figures 1 to 7This embodiment provides a four-hole zero-point rivet clamp with conical holes 26, including a clamp base 10. The clamp base 10 has four rivet positioning holes 11 spaced apart at its upper and lower ends, and the line connecting the four rivet positioning holes 11 is square. A rivet connector assembly cylinder 20 is rotatably disposed in each rivet positioning hole 11. The rivet connector assembly cylinder 20 is a cylindrical structure open at both ends, and a rivet connector 30 is detachably connected to it. Several conical holes 26 are formed along the same circumference on the inner circumferential wall of the rivet connector assembly cylinder 20. The rivet connector assembly cylinder 20 has movably disposed spheres 24, the same number as the conical holes 26, inside which spheres 24 can partially extend out of or from the conical holes 26. Exit; The fixture base 10 has a through groove 12 along the center line of the four rivet positioning holes 11. A lead screw drive shaft 40 is rotatably arranged in the through groove 12. Two drive sliders 50 are respectively connected to the lead screw drive shaft 40 by reverse threads. The two drive sliders 50 are slidably arranged in the through groove 12, and each drive slider 50 is engaged with a rivet joint assembly cylinder 20 on both sides. The lead screw drive shaft 40 is used to drive the two drive sliders 50 to slide in opposite directions or away from each other in the through groove 12, so that the two drive sliders 50 drive the four rivet joint assembly cylinders 20 to rotate and cause the ball 24 part in each rivet joint assembly cylinder 20 to extend out of the conical hole 26 or retract from the conical hole 26.

[0030] Specifically, in this embodiment, the two ends of the through groove 12 respectively penetrate two opposite sides of the clamp base 10, and a lead screw bearing is provided in the middle of the through groove 12. The lead screw drive shaft 40 is rotatably disposed in the lead screw bearing; four pull pin positioning holes 11 are respectively connected to the through groove 12. Among them, two threaded segments 41 with opposite thread directions are respectively provided on the outer periphery of the lead screw drive shaft 40, and the two threaded segments 41 are symmetrically arranged with respect to the center of the lead screw drive shaft 40; two drive sliders 50 are provided with threaded holes 52 through the direction of the through groove 12, and the two drive sliders 50 are respectively threadedly connected to the two threaded segments 41 through their respective threaded holes 52; when the lead screw drive shaft 40 is driven to rotate by an external force, the lead screw drive shaft 40 drives the two drive sliders 50 to slide towards each other or away from each other.

[0031] Furthermore, drive racks 51 are respectively provided on both sides of the opposite through slots 12 of the two drive sliders 50, and gear rings 22 are rotatably provided on the outer periphery of each rivet joint assembly cylinder 20. Each drive slider 50 is connected to the gear rings 22 of the two rivet joint assembly cylinders 20 through the drive racks 51 on both sides respectively. When the two drive sliders 50 slide towards each other or away from each other, the two drive sliders 50 can simultaneously drive the gear rings 22 on the four rivet joint assembly cylinders 20 to rotate.

[0032] In addition, to facilitate user operation of the lead screw drive shaft 40, in this embodiment, the length of the lead screw drive shaft 40 is the same as the length of the through groove 12; one or both ports of the lead screw drive shaft 40 are provided with an internal hex wrench position 42. This can be understood as the user being able to drive the lead screw drive shaft 40 to rotate forward or backward by inserting a wrench compatible with the internal hex wrench position 42 into the internal hex wrench position 42 of the lead screw drive shaft 40. This, in turn, drives the two drive sliders 50 to slide towards or away from each other through the two threaded sections 41 with opposite thread directions on the lead screw drive shaft 40, thereby enabling the four rivet joint assembly cylinders 20 to rotate synchronously forward or backward. This allows the ball 24 in each rivet joint assembly cylinder 20 to partially extend out of the corresponding conical hole 26 to lock the rivet joint 30 or to retract from the conical hole 26.

[0033] Specifically, in this embodiment, the rivet connector assembly cylinder 20 includes an inner cylinder 25 and a locking cover 21 coaxially arranged. The inner cylinder 25 is fixedly disposed in the rivet positioning hole 11. The inner circumferential wall of the inner cylinder 25 has a plurality of tapered holes 26 along the same circumferential line. The locking cover 21 is spaced apart on the outer side of the inner cylinder 25 and is fixedly connected to the inner circumferential wall of the rivet positioning hole 11. The gear ring 22 is rotatably disposed on the outer side wall of the locking cover 21, and the gear ring 22 is connected to the drive slide. Block 50 is engaged; in addition, the inner side of the gear ring 22 opposite to the inner cylinder 25 is provided with an arc-shaped groove 23 that communicates with the conical hole 26. The ball 24 is movably disposed in the arc-shaped groove 23. The width of the arc-shaped groove 23 at the end near the conical hole 26 gradually increases in the direction away from the conical hole 26, so that when the gear ring 22 rotates relative to the inner cylinder 25, the gear ring 22 drives the ball 24 to partially extend out of the conical hole 26 or retract from the conical hole 26 into the arc-shaped groove 23 through the arc-shaped groove 23.

[0034] Furthermore, an annular groove 31 is recessed on the outer peripheral wall of the rivet joint 30, and the middle part of the annular groove 31 is inclined to both sides along the axial direction. In this way, when the locking cover 21 rotates relative to the inner cylinder 25, the locking cover 21 drives the ball 24 to extend out of the conical hole 26 through the arc groove 23 to lock the annular groove 31 of the rivet joint 30, or retracts from the conical hole 26 into the arc groove 23 to release the locking of the annular groove 31 of the rivet joint 30.

[0035] In this embodiment, the fixture base 10 is a flat, rectangular structure. Additionally, the fixture base 10 is provided with several mounting holes 13 for connecting to the machine tool.

[0036] In addition, an annular groove is provided on the top edge of the inner cylinder 25, and several grooves are provided on the annular groove. This embodiment also includes a dustproof damping ring 27, which is fitted over the annular groove and its grooves to prevent dust. When the rivet joint assembly cylinder 20 is locked, the rivet joint 30 will deform slightly, and the dustproof damping ring 27 can play a certain rebound role at this time.

[0037] Compared with the prior art, this utility model embodiment provides four rivet positioning holes 11 on the clamp base 10, and a rivet joint assembly cylinder 20 is rotatably arranged in each rivet positioning hole 11. Specifically, the lead screw drive shaft 40 drives two drive sliders 50 to slide relative to each other or in opposite directions, so that the two drive sliders 50 synchronously drive the four rivet joint assembly cylinders 20 to rotate. During the rotation of the rivet joint assembly cylinders 20, the gear ring 22 on the locking cover 21 moves relative to the inner cylinder 25. As the gear ring 22 rotates, the ball 24 extends out of the conical hole 26 through the arc groove 23 to lock the annular groove 31 on the rivet joint 30, or retracts from the conical hole 26 into the arc groove 23 to unlock the rivet joint 30. When the annular groove 31 of the rivet joint 30 is locked by several balls 24, the rivet joint 30 is pulled in by a uniform downward force, without lateral positioning force. It mainly relies on the tapered clamping between several balls 24 and the annular groove 31 to achieve precise positioning and locking. When it is necessary to release the rivet joint 30, simply reverse the rotation of the lead screw drive shaft 40 to quickly drive the balls 24 back into the rivet joint assembly cylinder 20, so that the rivet joint 30 can be quickly pulled out from the rivet joint assembly cylinder 20. Therefore, the four-hole zero-point rivet clamp with conical hole 26 according to the embodiment of this utility model can achieve high-precision positioning and clamping, and can also quickly complete workpiece clamping, with high versatility.

[0038] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the four-hole zero-point pull stud clamp with tapered hole 26 of this utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A four-hole zero-point rivet clamp with a tapered hole, characterized in that: The device includes a clamp base with four rivet positioning holes spaced apart at its upper and lower ends, the line connecting the four rivet positioning holes forming a square. A rivet connector assembly cylinder is rotatably disposed in each of the rivet positioning holes. The rivet connector assembly cylinder is a cylindrical structure open at both ends, and a rivet connector is detachably connected to the rivet connector assembly cylinder. Several conical holes are formed along the same circumference on the inner peripheral wall of the rivet connector assembly cylinder. The rivet connector assembly cylinder contains movably disposed spheres of the same number as the conical holes, the spheres being able to partially extend out of or retract from the conical holes. The clamp base has a through groove along the center line of the four rivet positioning holes. A lead screw drive shaft is rotatably arranged in the through groove. Two drive sliders are respectively connected to the lead screw drive shaft by reverse threads. The two drive sliders are slidably arranged in the through groove, and each drive slider is engaged with one of the rivet joint assembly cylinders on both sides. The lead screw drive shaft is used to drive the two drive sliders to slide in opposite directions or away from each other in the through slot, so that the two drive sliders drive the four rivet joint assembly cylinders to rotate and cause the ball part in each rivet joint assembly cylinder to extend out of the conical hole to lock the rivet joint or to exit from the conical hole.

2. The four-hole zero-point rivet clamp with tapered hole according to claim 1, characterized in that: The two ends of the through groove pass through two opposite sides of the clamp base, and a lead screw bearing is provided in the middle of the through groove. The lead screw drive shaft is rotatably disposed in the lead screw bearing. The four pull pin positioning holes are respectively connected to the through groove.

3. The four-hole zero-point rivet clamp with tapered hole according to claim 2, characterized in that: The outer circumference of the lead screw drive shaft is provided with two threaded segments with opposite thread directions, and the two threaded segments are symmetrically arranged with respect to the center of the lead screw drive shaft; the two drive sliders are provided with threaded holes through the through groove, and the two drive sliders are threadedly connected to the two threaded segments through their respective threaded holes; when the lead screw drive shaft is driven to rotate by an external force, the lead screw drive shaft drives the two drive sliders to slide towards each other or away from each other.

4. The four-hole zero-point rivet clamp with tapered hole according to claim 3, characterized in that: Two drive sliders are provided with drive racks on both sides of the through groove, and a gear ring is rotatably provided on the outer periphery of each rivet joint assembly cylinder. Each drive slider is connected to the gear rings of the two rivet joint assembly cylinders by the drive racks on both sides. When the two drive sliders slide towards each other or away from each other, the two drive sliders drive the gear rings on the four rivet joint assembly cylinders to rotate.

5. The four-hole zero-point rivet clamp with tapered hole according to claim 2, characterized in that: The length of the lead screw drive shaft is the same as the length of the through groove; one or both ports of the lead screw drive shaft are provided with an internal hex wrench position.

6. The four-hole zero-point rivet clamp with tapered hole according to claim 4, characterized in that: The rivet connector assembly cylinder includes an inner cylinder body and a locking cover arranged coaxially. The inner cylinder body is fixedly disposed in the rivet positioning hole. The inner circumferential wall of the inner cylinder body has a plurality of conical holes along the same circumferential line. The locking cover is disposed on the outer side of the inner cylinder body and is fixedly connected to the inner sidewall of the rivet positioning hole. The gear ring is rotatably disposed on the locking cover and is meshed with the drive slider. An arc-shaped groove communicating with the conical holes is formed between the gear ring and the inner cylinder body. The ball is movably disposed in the arc-shaped groove. The width of the arc-shaped groove at the end near the conical hole gradually increases in the direction away from the conical hole, so that when the gear ring rotates relative to the inner cylinder body, the gear ring drives the ball part to extend out of the conical hole or retract from the conical hole into the arc-shaped groove through the arc-shaped groove.

7. The four-hole zero-point rivet clamp with tapered hole according to claim 1, characterized in that: The fixture base is provided with a plurality of mounting holes, which are used for connection with the machine tool.

8. The four-hole zero-point rivet clamp with tapered hole according to claim 1, characterized in that: The clamp base is a flat, square structure.

9. The four-hole zero-point rivet clamp with tapered hole according to claim 1, characterized in that: The outer peripheral wall of the rivet joint is recessed to form an annular groove, and the middle part of the annular groove is inclined to both sides along the axial direction.

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