阅读说明：本技术 一种避免夹持力度过大损坏待加工件的虎钳夹持装置 (Vice clamping device for avoiding excessive damage of clamping force to workpiece to be machined ) 是由 杜娟 于 2020-12-08 设计创作，主要内容包括：本发明涉及增压式精密虎钳技术领域,且公开了一种避免夹持力度过大损坏待加工件的虎钳夹持装置,包括壳体,所述壳体内部的顶部固定连接有限位齿,所述壳体左侧的顶部固定连接有固定钳,所述壳体的内部活动连接有丝杆,所述丝杆的左侧固定连接有旋转把手。该避免夹持力度过大损坏待加工件的虎钳夹持装置,转动旋转把手,此时滑块在丝杆的外壁向左运动,当活动钳与固定钳的夹持力大于滚珠与凹槽的摩擦力时,此时滚珠从凹槽的内部运动出去,从而达到了防止夹持力度过大损坏待加工件的效果。转动旋钮,此时螺纹杆可以带动活动块上下运动,进一步可以使得滚珠与凹槽之间的摩擦力发生改变,从而达到了可以便捷的调节夹持力度的效果。(The invention relates to the technical field of supercharged precise vices, and discloses a vice clamping device for preventing a workpiece to be machined from being damaged due to overlarge clamping force. This avoid too big vice clamping device who treats the machined part of damaging of centre gripping dynamics rotates rotatory handle, and the slider moves left at the outer wall of lead screw this moment, and when the clamping-force of activity pincers and fixed pincers was greater than the frictional force of ball and recess, the ball moved away from the inside of recess this moment to reached and prevented that the too big effect of treating the machined part of damaging of centre gripping dynamics. The knob is rotated, the threaded rod can drive the movable block to move up and down at the moment, and friction force between the ball and the groove can be further changed, so that the effect of conveniently adjusting clamping force is achieved.)

1. The utility model provides an avoid too big damage of centre gripping dynamics to treat vice clamping device of machined part, includes casing (1), its characterized in that: the top of the inside of the shell (1) is fixedly connected with a limiting tooth (2), the top of the left side of the shell (1) is fixedly connected with a fixed clamp (3), the inside of the shell (1) is movably connected with a lead screw (4), the left side of the lead screw (4) is fixedly connected with a rotating handle (5), the outer wall of the lead screw (4) is in threaded connection with a sliding block (6), the top of the sliding block (6) is provided with a groove (7), the inside of the shell (1) is movably connected with a movable clamp (8), the top of the movable clamp (8) is movably connected with a knob (9), the bottom of the knob (9) is fixedly connected with a screw rod (10), the outer wall of the screw rod (10) is in threaded connection with a fixed block (11), the bottom of the screw rod (10) is movably connected with a movable block (12), and the inside of, one side fixedly connected with ball (14) of activity piece (12) are kept away from in spring (13), perpendicular groove (15) have been seted up to the bottom of activity pincers (8), the inside activity of erecting groove (15) is connected with montant (16), the top fixedly connected with wedge piece (17) of montant (16), the outer wall of montant (16) bottom has cup jointed spring two (18), the bottom fixedly connected with gag lever post (19) of montant (16).

2. The vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force according to claim 1, wherein: and the inner part of the sliding block (6) is provided with a thread matched with the outer wall of the screw rod (4).

3. The vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force according to claim 1, wherein: the screw thread that has with the outer wall looks adaptation of screw rod (10) is in the inside of fixed block (11), fixed block (11) fixed connection is in the inside of activity pincers (8).

4. The vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force according to claim 1, wherein: the number of the balls (14) is not less than two, and the bottoms of the balls (14) are movably connected inside the grooves (7).

5. The vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force according to claim 1, wherein: the right side of the top of the wedge-shaped block (17) is provided with a certain inclination angle, the width of the wedge-shaped block (17) is smaller than the width of the inner part of the vertical groove (15), and the wedge-shaped block (17) is arranged on the left side of the sliding block (6).

6. The vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force according to claim 1, wherein: two ends of the second spring (18) are respectively and fixedly connected to the top of the limiting rod (19) and the bottom of the movable clamp (8).

7. The vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force according to claim 1, wherein: the bottom of gag lever post (19) has the tooth with the top looks adaptation of spacing tooth (2), gag lever post (19) is directly over spacing tooth (2), the quantity of spacing tooth (2) is no less than twenty, and the even top that distributes in casing (1) of these spacing tooth (2).

Technical Field

The invention relates to the technical field of supercharged precise vices, in particular to a vice clamping device for preventing a workpiece to be machined from being damaged due to overlarge clamping force.

Background

A pressure-charged precision vice is also called vice, which is a universal clamp used for clamping workpieces. The device is arranged on a workbench and used for clamping and stably processing workpieces, and is a necessary tool for a bench worker workshop.

The accurate vice of current booster-type need carry out the debugging that relapses to the clamping force degree when carrying out the work piece centre gripping, if press from both sides the too big then can hinder or press from both sides the work piece with work piece surface clamp, the debugging process is more loaded down with trivial details, and how prevent that the too big damage of clamping force degree from treating the processing work piece, the regulation clamping force degree that can be convenient has become an important problem, therefore we have proposed a vice clamping device who avoids the too big damage of clamping force degree to treat the machined part.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the vice clamping device for preventing the workpiece to be machined from being damaged due to overlarge clamping force, has the advantages of preventing the workpiece to be machined from being damaged due to the overlarge clamping force and conveniently adjusting the clamping force, and solves the problems that the clamping force needs to be repeatedly adjusted when the existing supercharged type precise vice is used for clamping the workpiece, the surface of the workpiece is clamped or the workpiece clamp is deformed if the clamping force is overlarge, and the debugging process is complicated.

(II) technical scheme

In order to achieve the purposes of preventing the workpiece to be machined from being damaged due to excessive clamping force and conveniently adjusting the clamping force, the invention provides the following technical scheme: a vice clamping device for avoiding damage to a workpiece to be machined due to excessive clamping force comprises a shell, wherein limiting teeth are fixedly connected to the top of the interior of the shell, fixed pliers are fixedly connected to the top of the left side of the shell, a lead screw is movably connected to the interior of the shell, a rotating handle is fixedly connected to the left side of the lead screw, a sliding block is in threaded connection with the outer wall of the lead screw, a groove is formed in the top of the sliding block, movable pliers are movably connected to the interior of the shell, a knob is movably connected to the top of the movable pliers, a screw rod is fixedly connected to the bottom of the knob, a fixed block is in threaded connection with the outer wall of the screw rod, a movable block is movably connected to the bottom of the screw rod, a first spring is fixedly connected to the interior of the bottom of the movable block, a ball, the inner portion of the vertical groove is movably connected with a vertical rod, the top of the vertical rod is fixedly connected with a wedge-shaped block, the outer wall of the bottom of the vertical rod is sleeved with a second spring, and the bottom of the vertical rod is fixedly connected with a limiting rod.

Preferably, the inside of the sliding block is provided with a thread matched with the outer wall of the screw rod.

Preferably, the fixed block is internally provided with threads matched with the outer wall of the screw rod, and the fixed block is fixedly connected inside the movable pliers.

Preferably, the number of the balls is not less than two, and the bottoms of the balls are movably connected inside the grooves.

Preferably, the right side of the top of the wedge-shaped block has a certain inclination angle, the width of the wedge-shaped block is smaller than the width of the inner part of the vertical groove, and the wedge-shaped block is arranged on the left side of the sliding block.

Preferably, two ends of the second spring are respectively and fixedly connected to the top of the limiting rod and the bottom of the movable clamp.

Preferably, the bottom of the limiting rod is provided with teeth matched with the tops of the limiting teeth, the limiting rod is arranged right above the limiting teeth, the limiting teeth are not less than twenty, and the limiting teeth are uniformly distributed on the tops of the inner parts of the shell.

(III) advantageous effects

Compared with the prior art, the invention provides the vice clamping device for preventing the workpiece to be machined from being damaged due to overlarge clamping force, and the vice clamping device has the following beneficial effects:

1. this avoid too big vice clamping device who treats machined part of damage of centre gripping dynamics, through rotatory handle, the lead screw, the slider, the recess, the activity pincers, fixed pincers, the cooperation of ball is used, rotates rotatory handle, the slider moves left at the outer wall of lead screw this moment, when the clamping-force of activity pincers and fixed pincers is greater than the frictional force of ball and recess, the ball goes out from the inside motion of recess this moment to reached and prevented that the too big damage of centre gripping dynamics from treating the effect of machined part.

2. This avoid too big damage of centre gripping dynamics to treat vice clamping device of machined part uses through the cooperation of knob and screw rod, movable block, ball, recess, rotates the knob, and the threaded rod can drive the movable block up-and-down motion this moment, further can make the frictional force between ball and the recess change to the effect of the regulation centre gripping dynamics that can be convenient has been reached.

Drawings

FIG. 1 is a schematic front view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure B of FIG. 1 according to the present invention;

fig. 4 is a schematic diagram of the stop block structure of the present invention after movement.

In the figure: 1. a housing; 2. limiting teeth; 3. fixing the pliers; 4. a screw rod; 5. rotating the handle; 6. a slider; 7. a groove; 8. movable pliers; 9. a knob; 10. a screw; 11. a fixed block; 12. a movable block; 13. a first spring; 14. a ball bearing; 15. a vertical slot; 16. a vertical rod; 17. a wedge-shaped block; 18. a second spring; 19. a limiting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a vice clamping device for preventing a workpiece to be machined from being damaged due to excessive clamping force comprises a housing 1, wherein the top inside the housing 1 is fixedly connected with limiting teeth 2, the number of the limiting teeth 2 is not less than twenty, the limiting teeth 2 are uniformly distributed on the top inside the housing 1, the top on the left side of the housing 1 is fixedly connected with fixed pliers 3, the inside of the housing 1 is movably connected with a screw rod 4, the left side of the screw rod 4 is fixedly connected with a rotating handle 5, the outer wall of the screw rod 4 is in threaded connection with a sliding block 6, the inside of the sliding block 6 is provided with threads matched with the outer wall of the screw rod 4, the top of the sliding block 6 is provided with a groove 7, the inside of the housing 1 is movably connected with movable pliers 8, the top of the movable pliers 8 is movably connected with a knob 9, the bottom of the knob 9 is fixedly connected with a screw rod 10, the outer wall of, the fixed block 11 is fixedly connected inside the movable clamp 8, the bottom of the screw rod 10 is movably connected with a movable block 12, the inside of the bottom of the movable block 12 is fixedly connected with a first spring 13, one side of the first spring 13, which is far away from the movable block 12, is fixedly connected with a ball 14, the number of the ball 14 is not less than two, the bottom of the ball 14 is movably connected inside the groove 7, the bottom of the movable clamp 8 is provided with a vertical groove 15, the inside of the vertical groove 15 is movably connected with a vertical rod 16, the top of the vertical rod 16 is fixedly connected with a wedge-shaped block 17, the right side of the top of the wedge-shaped block 17 has a certain inclination angle, the width of the wedge-shaped block 17 is smaller than the width inside of the vertical groove 15, the wedge-shaped block 17 is arranged on the left side of the sliding block 6, the outer wall of the bottom of the vertical rod 16 is sleeved, the bottom of the limiting rod 19 is provided with teeth matched with the tops of the limiting teeth 2, and the limiting rod 19 is arranged right above the limiting teeth 2.

Detailed working principle referring to fig. 1, turning to the rotating handle 5, the screw rod 4 can rotate at the moment because the rotating handle 5 is fixedly connected to the left side of the screw rod 4, and the sliding block 6 is connected to the outer wall of the screw rod 4 through threads, and the sliding block 6 is internally provided with threads matched with the outer wall of the screw rod 4, so that the sliding block 6 can slide leftwards on the outer wall of the screw rod 4.

Referring to fig. 2 in detail, since the top of the slider 6 is provided with the groove 7, and the bottom of the ball 14 is movably connected inside the groove 7, the ball 14 will slide leftward at this time, and since the first spring 13 is fixedly connected inside the bottom of the movable block 12, and the ball 14 is fixedly connected to one side of the first spring 13 away from the movable block 12, the movable block 12 will move leftward at this time, and since the top of the movable clamp 8 is movably connected with the knob 9, the bottom of the knob 9 is fixedly connected with the screw 10, and the bottom of the screw 10 is movably connected with the movable block 12, the movable clamp 8 will also move leftward at this time.

Referring to fig. 4 for details, after the clamping is completed, when the force of the clamped object is greater than the friction force between the ball 14 and the groove 7, the ball 14 is separated from the inside of the groove 7, the movable clamp 8 stops moving leftwards, the slide block 6 continues moving leftwards, the wedge block 17 is on the left side of the slide block 6, the width of the wedge block 17 is smaller than the width of the inside of the vertical groove 15, the wedge block 17 moves downwards, the wedge block 17 is fixedly connected to the top of the vertical rod 16, the bottom of the vertical rod 16 is fixedly connected with the limiting rod 19, the limiting rod 19 moves downwards, the bottom of the limiting rod 19 has teeth matched with the tops of the limiting teeth 2, the number of the limiting teeth 2 of the limiting rod 19 above the limiting teeth 2 is not less than twenty, and the limiting teeth 2 are uniformly distributed on the top of the inside of the housing 1, so 19 the bottom of gag lever post can block in the inside at 2 tops of spacing tooth this moment, so slider 6 can't move again this moment, and slider 6 blocks activity pincers 8 this moment and prevents that activity pincers 8 are not hard up among the clamping process, and the clamping dynamics slightly is greater than the frictional force of ball 14 with recess 7 this moment to reached and prevented that the too big damage of clamping dynamics from treating the effect of machined part.

Referring to fig. 2 for details, the knob 9 is rotated, the screw rod 10 is fixedly connected to the bottom of the knob 9, the screw rod 10 can rotate at the moment, the outer wall of the screw rod 10 is in threaded connection with the fixed block 11, threads matched with the outer wall of the screw rod 10 are arranged inside the fixed block 11, the fixed block 11 is fixedly connected to the inside of the movable pliers 8, the screw rod 10 can move up and down at the moment, the bottom of the screw rod 10 is movably connected with the movable block 12, the movable block 12 can move up and down at the moment, the spring 13 is fixedly connected to the inside of the bottom of the movable block 12, the ball 14 is fixedly connected to one side, away from the movable block 12, of the spring 13, the bottom of the ball 14 is movably connected to the inside of the groove 7, and the friction force between the ball 14 and the groove 7 can be adjusted at the moment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.