precision combination flat nose pliers

Abstract

The utility model discloses a precise combination flat mouth tongs relates to flat mouth tongs technical field, including the body of tongs, fixed mouth and movable mouth, the fixed mouth sets up in the upper surface one side of body of tongs, the fixed mouth is connected through first bolt and body of tongs thread locking, the movable mouth is slidly arranged on the upper surface of body of tongs, the upper surface of body of tongs and be located movable mouth far away from the one side of fixed mouth and be provided with fixed support, both sides of fixed support are connected through second bolt and body of tongs thread locking, the inside of body of tongs is provided with the positioner of keeping movable mouth and fixed support vertical direction stability, the upper portion inclined thread hole of fixed support is equipped with the screw rod in the thread, the utility model discloses when the flat mouth tongs movable mouth is up when the force is born, because the compensation force is formed to the inclination of connecting groove and screw rod, thereby making movable mouth not up.

Description

Technical Field

[0001] This utility model relates to the field of flat-nose pliers technology, specifically to precision combination flat-nose pliers. Background Technology

[0002] As a core clamping tool in the field of machining, the flat-jaw vise is widely used in milling machines, drilling machines, grinding machines and other equipment to accurately position and stably clamp metal workpieces. Its clamping stability directly affects the machining accuracy of the workpiece.

[0003] In existing flat-jaw vises, the movable jaw is the core component that directly contacts the workpiece. When clamping the workpiece and bearing machining force, it is prone to "tilting" due to force imbalance. That is, the end of the movable jaw away from the fixed jaw tilts towards the fixed support, resulting in a gap between the workpiece and the jaw contact surface. This not only destroys the workpiece's positioning reference, but also causes machining vibration, resulting in workpiece dimensional deviations, increased surface roughness, and even tool breakage. Utility Model Content

[0004] In view of the problems existing in the above-mentioned flat-nose pliers, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a precision combined flat-jaw pliers, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A precision combination flat-jaw pliers includes a pliers body, a fixed jaw, and a movable jaw. The fixed jaw is located on one side of the upper surface of the pliers body and is threadedly locked to the pliers body by a first bolt. The movable jaw is slidably disposed on the upper surface of the pliers body. A fixed support is provided on the upper surface of the pliers body, on the side of the movable jaw away from the fixed jaw. Both sides of the fixed support are threadedly locked to the pliers body by second bolts. The pliers body has a limiting mechanism inside to keep the movable jaw and the fixed support vertically stable. A lead screw is threaded in the inclined threaded hole at the upper part of the fixed support. A T-shaped groove is inclined on the side of the movable jaw near the fixed support, and a connector is engaged inside the T-shaped groove. One end of the lead screw is fixedly connected to the connector.

[0007] Preferably, the limiting mechanism includes two T-shaped blocks, and the end of the clamp body is provided with a T-shaped through groove. The two T-shaped blocks are slidably disposed inside the T-shaped through groove from left to right, and the upper sides of the two T-shaped blocks are respectively fixedly connected to the corresponding movable jaw and fixed support.

[0008] Preferably, a first clamping plate and a second clamping plate are respectively provided on the side of the fixed jaw and the movable jaw that are close to each other. The first clamping plate is threadedly locked to the fixed jaw by a third bolt, and the second clamping plate is threadedly locked to the movable jaw by a fourth bolt.

[0009] Preferably, a knob is fixedly sleeved at the end of the lead screw away from the movable jaw.

[0010] Preferably, the fixed support has cavities on both sides, and a ball is slidably disposed inside the cavity. The lower side of the ball extends to the outside of the cavity. A ball groove is provided inside the clamp body at a position corresponding to the ball, and the lower side of the ball extends into the ball groove.

[0011] Preferably, the inclination angle of the T-groove is the same as the inclination angle of the lead screw, and both are greater than 0° and less than 90°.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This invention utilizes an inclined lead screw and an inclined T-shaped groove on the movable jaw, with an inclination angle greater than 0° and less than 90°. During use, when the movable jaw is subjected to force and tends to tilt upwards (tilting towards the direction of the fixed support), the inclination of the T-shaped groove and the lead screw creates a compensating force, thereby preventing the movable jaw from tilting upwards. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the structure of the precision combined flat-jaw pliers proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the second-view structure; Figure 3 for Figure 1 A schematic diagram of the structure after the lead screw is removed.

[0015] Figure 4 for Figure 1 A cross-sectional structural diagram.

[0016] Explanation of reference numerals in the attached figures: 1. Clamp body; 2. Fixed jaws; 3. First bolt; 4. First clamping plate; 5. Movable jaws; 6. Second clamping plate; 7. Fourth bolt; 8. T-groove; 9. Lead screw; 10. Fixed support; 11. Second bolt; 12. Knob; 13. Third bolt; 14. Connector; 15. T-block; 16. T-slot; 17. Ball bearing; 18. Ball bearing groove. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] Reference Figure 1-3 A precision combination flat-jaw pliers includes a pliers body 1, a fixed jaw 2, and a movable jaw 5. The fixed jaw 2 is located on one side of the upper surface of the pliers body 1 and is threadedly locked to the pliers body 1 by a first bolt 3. The movable jaw 5 is slidably disposed on the upper surface of the pliers body 1. A fixed support 10 is provided on the upper surface of the pliers body 1, on the side of the movable jaw 5 away from the fixed jaw 2. Both sides of the fixed support 10 are threadedly locked to the pliers body 1 by second bolts 11. By adjusting the position of the fixed support 10, the distance between the movable jaw 5 and the fixed jaw 2 can be adjusted. Then, by tightening the second bolts 11, the fixed support 10 and the pliers body 1 are locked and fixed. The pliers body 1 has a retaining mechanism inside to hold the movable jaw 5 in place. The jaws 5 and the fixed support 10 are vertically stable limiting mechanisms. The upper inclined threaded hole of the fixed support 10 is provided with a lead screw 9. The movable jaw 5 is inclined with a T-shaped groove 8 on the side near the fixed support 10. The connector 14 is engaged inside the T-shaped groove 8. One end of the lead screw 9 is fixedly connected to the connector 14. The inclination angle of the T-shaped groove 8 is the same as the inclination angle of the lead screw 9, and both are greater than 0° and less than 90°. The end of the lead screw 9 away from the movable jaw 5 is fixedly sleeved with a knob 12. When the operator rotates the knob 12, the lead screw 9 moves helically. The lead screw 9 pushes the connector 14 to rotate in the T-shaped groove 8, thereby driving the movable jaw 5 to move towards the fixed jaw 2.

[0019] Reference Figure 4 The limiting mechanism includes two T-shaped blocks 15. The end of the clamp body 1 is provided with a T-shaped through groove 16. The two T-shaped blocks 15 are slidably disposed inside the T-shaped through groove 16 from left to right. The upper side of the two T-shaped blocks 15 is fixedly connected to the corresponding movable jaw 5 and fixed support 10 respectively. The cooperation between the T-shaped blocks 15 and the T-shaped through groove 16 can ensure that the movable jaw 5 and the fixed support 10 move smoothly.

[0020] Reference Figure 1-3A first clamping plate 4 and a second clamping plate 6 are respectively provided on the side of the fixed jaw 2 and the movable jaw 5. The first clamping plate 4 is threadedly locked to the fixed jaw 2 by a third bolt 13, and the second clamping plate 6 is threadedly locked to the movable jaw 5 by a fourth bolt 7.

[0021] Reference Figure 4 The fixed support 10 has cavities on both sides inside, and a ball bearing 17 is slidably disposed inside the cavity. The lower side of the ball bearing 16 extends to the outside of the cavity. A ball groove 18 is provided inside the clamp body 1 at a position corresponding to the ball bearing 17. The lower side of the ball bearing 17 extends into the ball groove 18. When the fixed support 10 moves inside the clamp body 1, it will drive the ball bearing 17 at the bottom of the fixed support 10 to move. When the ball bearing 17 is aligned with the ball groove 18 and the lower side of the ball bearing 1 falls into the ball groove 18, the position of the fixed support 10 is restricted, thereby restricting the distance between the fixed jaw 2 and the movable jaw 5.

[0022] In this invention, during use, the flat-jaw vises are fixed on the workbench of a processing equipment (such as a milling machine), ensuring that the vise body 1 is placed horizontally to avoid overall tilting affecting clamping accuracy. The workpiece is placed on the vise body 1, with one side against the first clamping plate 4. The knob 12 is manually turned, causing the lead screw 9 to rotate along the tilt of the fixed support 10. The lead screw 9 pushes the connector 14 to rotate in the T-shaped groove 8, thereby causing the movable jaw 5 to move towards the fixed jaw 2 until the second clamping plate 6 is against the other side of the workpiece. During processing, when the workpiece is subjected to cutting force and transmitted to the movable jaw 5, causing the movable jaw 5 to tilt upwards towards the fixed support 10, the tilted lead screw 9 and the tilted T-shaped groove 8 will generate a downward compensating force on the movable jaw 5 to counteract the upward tilting force. At the same time, the T-shaped block 15 in the vise body 1 slides along the T-shaped through groove 16, restricting the vertical displacement of the movable jaw 5 and ensuring that the movable jaw 5 is always stably against the vise body 1.

[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A precision combination flat-jaw pliers, comprising a pliers body (1), fixed jaws (2) and movable jaws (5), characterized in that, The fixed jaw (2) is located on one side of the upper surface of the jaw body (1). The fixed jaw (2) is threadedly locked to the jaw body (1) by the first bolt (3). The movable jaw (5) is slidably located on the upper surface of the jaw body (1). A fixed support (10) is provided on the upper surface of the jaw body (1) on the side of the movable jaw (5) away from the fixed jaw (2). Both sides of the fixed support (10) are threadedly locked to the jaw body (1) by the second bolt (11). The jaw body (1) is provided with a limiting mechanism to keep the movable jaw (5) and the fixed support (10) vertically stable. A screw (9) is provided in the inclined threaded hole at the upper part of the fixed support (10). A T-shaped groove (8) is inclinedly opened on the side of the movable jaw (5) near the fixed support (10). A connector (14) is snapped into the T-shaped groove (8). One end of the screw (9) is fixedly connected to the connector (14).

2. The precision combination flat-jaw pliers according to claim 1, characterized in that, The limiting mechanism includes two T-shaped blocks (15). The end of the clamp body (1) is provided with a T-shaped through groove (16). The two T-shaped blocks (15) are slidably disposed inside the T-shaped through groove (16) from left to right. The upper sides of the two T-shaped blocks (15) are respectively fixedly connected to the corresponding movable jaw (5) and fixed support (10).

3. The precision combination flat-jaw pliers according to claim 2, characterized in that, The fixed jaw (2) and the movable jaw (5) are respectively provided with a first clamping plate (4) and a second clamping plate (6) on the side close to each other. The first clamping plate (4) is threadedly locked to the fixed jaw (2) by a third bolt (13), and the second clamping plate (6) is threadedly locked to the movable jaw (5) by a fourth bolt (7).

4. The precision combination flat-jaw pliers according to claim 1, characterized in that, A knob (12) is fixedly connected to the end of the lead screw (9) away from the movable jaw (5).

5. The precision combination flat-jaw pliers according to claim 3, characterized in that, The fixed support (10) has cavities on both sides inside, and a ball (17) is slidably arranged inside the cavity. The lower side of the ball (17) extends to the outside of the cavity. A ball groove (18) is provided inside the clamp body (1) at a position corresponding to the ball (17). The lower side of the ball (17) extends into the inside of the ball groove (18).

6. The precision combination flat-jaw pliers according to claim 1, characterized in that, The tilt angle of the T-groove (8) is the same as that of the lead screw (9), and both are greater than 0° and less than 90°.

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