Chuck device with adjustable torque

Abstract

The utility model relates to the technical field of PCB cutter machining equipment, in particular to a torque-adjustable chuck device which comprises a body and a chuck assembly arranged in the body, the chuck assembly comprises a tongue plate, a pressing module, an elastic module and an adjusting screw, the tongue plate is rotationally arranged on the body, a clamping opening is formed in one side of the body, and the elastic module is arranged on the other side of the body. The elastic module abuts against one end of the tongue plate, the pressing module is arranged in the body and located above the other end of the tongue plate, and the pressing module is matched with the tongue plate to be used for clamping a bar. The adjusting screw is used for adjusting the elastic force applied to one end of the tongue plate by the elastic module. Through the arrangement of the adjusting screw, the elastic force of the elastic module is adjusted through the adjusting screw so as to adjust the torsion applied to the bar by the tongue plate, and the effect of adjusting the torque of the bar is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB tool processing equipment, in particular to a chuck device with adjustable torque. Background Art

[0002] For multi-axis, multi-station processing equipment in the PCB field, the production process of finished PCB tools requires the use of a chuck device to clamp the bar stock, control the bar stock's rotational phase and speed to cut the thread angle, and control the bar stock processing length to cut the fishtail angle, etc. Current multi-station processing equipment has multiple working heads, each of which is equipped with a chuck device. Due to errors in processing and assembly, the clamping force of each chuck device holding the bar stock and the length of the bar stock extending vary, affecting the consistency of product processing. In addition, most existing chuck devices on the market use laminated springs and non-adjustable rear positioning. The radial clamping of the bar stock also uses a chuck body and tongue plate clamping method. When the chuck body and tongue plate wear, the first result is that the chuck concentricity is out of tolerance, the chuck body is scrapped, and the cost of use remains high. Secondly, after the tongue plate is worn, the pressure on the tongue plate will be significantly reduced due to the small compression of the laminated spring, resulting in the clamping force of the tongue plate pressing the material becoming smaller and exceeding the minimum torque range required by the bar, resulting in the bar being unable to be clamped. During the rotation of the bar, the runout increases and exceeds the tolerance. Summary of the Invention

[0003] The utility model aims to solve the problems of the prior art and provides a chuck device with adjustable torque, which can adjust the torque applied by the tongue plate to the bar stock, so that the torque applied to the bar stock can still be maintained at a desired value after the tongue plate is worn.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The utility model provides a chuck device with adjustable torque, comprising a main body and a chuck assembly arranged in the main body, the chuck assembly comprising a tongue plate, a holding module, an elastic module and an adjusting screw, the tongue plate being rotatably arranged on the main body, a clamping opening being provided on one side of the main body, the elastic module abutting one end of the tongue plate, the holding module being arranged in the main body and located above the other end of the tongue plate, the holding module and the tongue plate being cooperated to clamp the bar material; the adjusting screw is used to adjust the elastic force applied by the elastic module to one end of the tongue plate.

[0006] Furthermore, the elastic module includes a spring and a pressure plate, one end of the spring abuts against the tongue plate, the pressure plate is connected to the other end of the spring, the adjusting screw is threadedly connected to the body, and the adjusting screw abuts against the pressure plate.

[0007] Furthermore, the elastic module also includes a support pin, which is arranged at one end of the spring. The end of the support pin away from the spring is provided with an arc surface, and the arc surface contacts the tongue plate.

[0008] Furthermore, the holding module includes two tungsten steel rods, both of which are arranged on the main body, and the two tungsten steel rods are arranged at intervals, and the tongue plate cooperates with the two tungsten steel rods to clamp the rod material.

[0009] Furthermore, the main body is provided with an adjustment hole, in which an eccentric shaft is movably provided. The eccentric shaft is used to resist one end of the rod inserted into the clamping port; the length of the rod inserted into the clamping port is adjusted by controlling the rotation of the eccentric shaft.

[0010] Furthermore, the eccentric shaft includes a positioning portion, a connecting portion and an eccentric portion, the connecting portion is arranged between the positioning portion and the eccentric portion, the positioning portion and the connecting portion are arranged concentrically, the eccentric portion and the connecting portion are arranged non-concentrically, and the positioning portion is installed in the adjustment hole.

[0011] Furthermore, the main body is further provided with two interference screws facing each other, and the positioning portion is located between the two interference screws.

[0012] The beneficial effects of the present invention are as follows: the present invention adjusts the torsional force applied by the tongue plate to the rod material by adjusting the elastic force of the elastic module through the setting of the adjusting screw, thereby achieving the effect of adjusting the torque of the rod material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present utility model.

[0014] Figure 2 It is a cross-sectional view of the present utility model.

[0015] Figure 3 Schematic diagram of the chuck assembly of the present invention.

[0016] Figure numerals: 1—main body, 2—chuck assembly, 3—tongue plate, 4—pressing module, 5—elastic module, 6—adjusting screw, 11—clamping mouth, 12—adjusting hole, 13—eccentric shaft, 14—positioning part, 15—connecting part, 16—eccentric part, 17—interference screw, 41—tungsten steel rod, 51—spring, 52—pressure plate, 53—support pin. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0018] like Figures 1 to 3As shown, the utility model provides a chuck device with adjustable torque, including a main body 1 and a chuck assembly 2 arranged in the main body 1, the chuck assembly 2 includes a tongue plate 3, a holding module 4, an elastic module 5 and an adjusting screw 6, the tongue plate 3 is rotatably arranged on the main body 1, a clamping opening 11 is provided on one side of the main body 1, the elastic module 5 abuts against one end of the tongue plate 3, the holding module 4 is arranged in the main body 1 and is located above the other end of the tongue plate 3, the holding module 4 cooperates with the tongue plate 3 to clamp the bar material; the adjusting screw 6 is used to adjust the elastic force applied to one end of the tongue plate 3 by the elastic module 5.

[0019] Specifically, the end of the bar is inserted into the body 1 through the clamping opening 11, and the other end of the tongue plate 3 cooperates with the holding die 4 to achieve clamping. When the tongue plate 3 wears out due to frequent use, the clamping force (torque) of the tongue plate 3 on the bar will inevitably decrease. The staff can turn the adjustment screw 6 to make the elastic die 5 apply a greater force to one end of the tongue plate 3, and use the seesaw to move the other end of the tongue plate 3 toward the holding die 4. This ensures that the clamping effect on the bar is basically the same as before wear, achieving the effect of adjusting the torque.

[0020] In this embodiment, the elastic module 5 includes a spring 51 and a pressure plate 52. One end of the spring 51 contacts the tongue plate 3. The pressure plate 52 is connected to the other end of the spring 51. The adjusting screw 6 is screwed to the body 1, and the adjusting screw 6 contacts the pressure plate 52.

[0021] That is, the elastic module 5 is mainly squeezed and deformed by the spring 51 to apply a force to the tongue plate 3. Figure 1 For example, when the tongue plate 3 is worn, the staff turns the adjusting screw 6 to make the pressure plate 52 move downward, and the spring 51 is further squeezed to apply a greater force to the tongue plate 3, so that the other end of the tongue plate 3 is tilted more and can output a greater force, so that the clamped bar is clamped with a greater force.

[0022] Specifically, the elastic module 5 further includes a support pin 53 , which is disposed at one end of the spring 51 . An end of the support pin 53 away from the spring 51 is provided with an arc surface, which contacts the tongue plate 3 .

[0023] That is, the support pin 53 has an arc surface, which is tangent to the tail plane of the tongue plate 3. When the tongue plate 3 is automatically clamped or loosened, the bottom of the mushroom head always remains tangent to the force-bearing surface of the tongue plate 3, transmitting the elastic force of the spring 51 to the tongue plate 3, thereby maintaining the stability of the clamping force of the tongue plate 3 on the rod.

[0024] In this embodiment, the pressing die set 4 includes two tungsten steel rods 41 , both of which are arranged on the main body and spaced apart. The tongue plate 3 cooperates with the two tungsten steel rods 41 to clamp the bar material.

[0025] The tungsten steel rod 41 has the property of wear resistance. The two tungsten steel rods 41 cooperate with the tongue plate 3 to respectively contact three positions of the end of the bar material, forming a three-point positioning support, thereby ensuring stable clamping of the bar material.

[0026] Specifically, the tungsten steel rod 41 contacts the rod material at its side (arc-shaped side), thereby reducing the friction between the tungsten steel rod 41 and the rod material, thereby achieving the effect of reducing wear.

[0027] In this embodiment, the main body 1 is provided with an adjustment hole 12, and an eccentric shaft 13 is movably provided in the adjustment hole 12. The eccentric shaft 13 is used to resist one end of the rod inserted into the clamping opening 11; the length of the rod inserted into the clamping opening 11 is adjusted by controlling the rotation of the eccentric shaft 13.

[0028] That is, by rotating the eccentric shaft 13, the eccentric shaft 13 can be controlled to have a small displacement, so that the position where the end of the rod contacts the eccentric shaft 13 changes, thereby achieving the effect of adjusting the insertion depth of the rod.

[0029] Specifically, the eccentric shaft 13 includes a positioning portion 14, a connecting portion 15, and an eccentric portion 16. The connecting portion 15 is disposed between the positioning portion 14 and the eccentric portion 16. The positioning portion 14 and the connecting portion 15 are disposed concentrically, while the eccentric portion 16 and the connecting portion 15 are disposed non-concentrically. The positioning portion 14 is mounted in the adjustment hole 12. That is, the eccentric portion 16 is disposed eccentrically relative to the connecting portion 15. The positioning portion 14 and the connecting portion 15 always rotate in the adjustment hole 12, thereby driving the eccentric portion 16 to rotate about the center of the connecting portion 15, thereby adjusting the position of the contact bar.

[0030] Specifically, the main body 1 is further provided with two mutually opposing screws 17 , and the positioning portion 14 is located between the two opposing screws 17 , thereby achieving the positioning of the positioning portion 14 and preventing the positioning portion 14 from being separated from the adjustment hole 12 .

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A chuck device with adjustable torque, comprising a body and a chuck assembly disposed within the body, characterized in that: The chuck assembly includes a tongue plate, a holding module, an elastic module and an adjusting screw. The tongue plate is rotatably arranged on the main body. A clamping opening is provided on one side of the main body. The elastic module abuts against one end of the tongue plate. The holding module is arranged in the main body and is located above the other end of the tongue plate. The holding module and the tongue plate cooperate to clamp the bar material; the adjusting screw is used to adjust the elastic force applied by the elastic module to one end of the tongue plate.

2. The torque-adjustable chuck device according to claim 1, characterized in that: The elastic module includes a spring and a pressure plate, one end of the spring contacts the tongue plate, the pressure plate is connected to the other end of the spring, and the adjusting screw is screwed to the body, and the adjusting screw contacts the pressure plate.

3. The torque-adjustable chuck device according to claim 2, characterized in that: The elastic module also includes a support pin, which is arranged at one end of the spring. The end of the support pin away from the spring is provided with an arc surface, and the arc surface contacts the tongue plate.

4. The torque-adjustable chuck device according to claim 1, characterized in that: The pressing module includes two tungsten steel rods, both of which are arranged on the main body and spaced apart. The tongue plate cooperates with the two tungsten steel rods to clamp the rod material.

5. The torque-adjustable chuck device according to claim 1, characterized in that: The body is provided with an adjustment hole, in which an eccentric shaft is movably provided. The eccentric shaft is used to resist one end of the bar inserted into the clamping opening. The length of the bar inserted into the clamping opening can be adjusted by controlling the rotation of the eccentric shaft.

6. The torque-adjustable chuck device according to claim 5, characterized in that: The eccentric shaft includes a positioning portion, a connecting portion and an eccentric portion. The connecting portion is arranged between the positioning portion and the eccentric portion. The positioning portion and the connecting portion are arranged concentrically, and the eccentric portion and the connecting portion are arranged non-concentrically. The positioning portion is installed in the adjustment hole.

7. The torque-adjustable chuck device according to claim 6, characterized in that: The main body is further provided with two interference screws facing each other, and the positioning portion is located between the two interference screws.

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