CN115026720A

CN115026720A - Grinding and polishing handheld clamp

Info

Publication number: CN115026720A
Application number: CN202210906154.1A
Authority: CN
Inventors: 王福增; 张铖; 孟岩鑫; 胡岭保
Original assignee: Nan'an Huada Stone Industry Technology Research Institute; Huaqiao University
Current assignee: Nan'an Huada Stone Industry Technology Research Institute; Huaqiao University
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-09-09

Abstract

The invention discloses a grinding and polishing handheld clamp which comprises a motor protective cover, a motor, a base, a double-rotation-direction bolt and two opposite movable seats. Each movable seat is provided with a clamping piece, and the two clamping pieces which are close to each other can clamp a workpiece. The motor is fixed in the motor protection cover, and the output of motor is fixed in the base. The double-screwing-direction bolt is provided with two sections of opposite threads, and the two movable seats are respectively in threaded connection with the two sections of opposite threads. The double-handed bolt is mounted on the base and arranged to rotate radially but to restrict axial movement. Two sliding seats are driven to be close to each other through rotating the double-rotation-direction bolt to clamp workpieces, the rotation of the workpieces is driven through a motor to polish and polish, the clamp is compact in structure, the workpieces with smaller or thinner quality can be machined, the use is convenient, the energy consumption is low, the polishing efficiency is remarkably improved, clamping pieces with different sizes can be replaced by the clamp, and the workpieces with different sizes can be clamped.

Description

Grinding and polishing handheld clamp

Technical Field

The invention relates to a handheld clamp, and belongs to the technical field of clamps.

Background

Anchor clamps are machining or the essential equipment in the electric welding work, but when needing the less or thin work piece of processingquality, use the great anchor clamps of specification not only to use inconvenience but also energy loss big, are difficult to satisfy current experimental demand.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a clamp suitable for handheld polishing, and solves the problem that the clamp of the existing polishing machine cannot meet the requirements of clamping workpieces with different sizes.

The invention achieves the above purpose through the following technical scheme: a grinding and polishing handheld clamp comprises a motor protective cover (1), a motor (2), a base (6), a double-rotation-direction bolt (7) and two opposite movable seats (8); each movable seat (8) is provided with a clamping piece (83). The motor (2) is fixed in the motor protective cover (1), and the output end of the motor (2) is fixed on the base (6). The double-screwing-direction bolt (7) is provided with two sections of opposite threads, and the two movable seats (8) are respectively in threaded connection with the two sections of opposite threads; the double-rotation-direction bolt (7) is arranged on the base (6) and can rotate in the radial direction, but can not move in the axial direction, and a limiting mechanism is arranged between the double-rotation-direction bolt (7) and the base (6) to limit the double-rotation-direction bolt (7) to move in the axial direction; the two clamping pieces (83) can be close to each other by rotating the double-rotation-direction bolt (7) so as to clamp the workpiece.

As an improvement of the grinding and polishing handheld clamp, a straight chute is formed in one surface, close to the motor (2), of the base (6), a strip-shaped groove penetrating through the base (6) is formed in the bottom of the straight chute, the width of the strip-shaped groove is smaller than that of the straight chute, and the strip-shaped groove is parallel to the straight chute. The movable seat (8) further comprises a sliding block (81) and a connecting block (82); the sliding block (81) and the clamping piece (83) are respectively fixed at two ends of the connecting block (82); the connecting block (82) is matched with and penetrates through the strip-shaped groove, and the sliding block (81) and the clamping piece (83) are respectively abutted against the inner bottom surface of the straight sliding groove and the outer bottom surface of the base (6); the double-rotation-direction bolt (7) penetrates through the strip-shaped groove and the two connecting blocks (82); the two connecting blocks (82) are respectively in threaded connection with two sections of opposite threads of the double-handed bolt (7).

As an improvement of the grinding and polishing handheld clamp, the connecting block (82) and the clamping piece (83) are integrally formed; the connecting block (82) is fixedly connected with the sliding block (81) through screws.

As an improvement of the grinding and polishing handheld clamp, the height of the connecting block (82) is equal to the thickness of the strip-shaped groove.

As an improvement of the grinding and polishing handheld clamp, the end of the double-rotation-direction bolt (7) is exposed out of the base (6), the rod body of the double-rotation-direction bolt (7) adjacent to the end is provided with a limiting block, and the limiting block abuts against the inner wall of the strip-shaped groove.

As an improvement of the grinding and polishing handheld clamp, a cylindrical groove is formed in the inner wall of the end, away from the end of the double-screwing-direction bolt (7), of the strip-shaped groove, and the end tail of the double-screwing-direction bolt (7) is embedded into the cylindrical groove.

As an improvement of the hand-held clamp for grinding and polishing, the sliding block (81) is in a plate shape and is attached to the inner bottom surface of the straight sliding chute; the two clamping pieces (83) are plate-shaped and are attached to the outer bottom surface of the base (6); the opposite sides of the two clamping pieces (83) are provided with symmetrical V-shaped notches.

As an improvement of the grinding and polishing handheld clamp, the clamp further comprises a rotating platform (5); the output end of the motor (2) is firstly fixed with the rotating platform (5), and then the rotating platform (5) is fixed with the base (6).

As an improvement of the sanding and polishing handheld clamp, the clamp further comprises a ball bearing (4); the rotary platform (5) comprises a circular disc and a convex cylinder protruding on the circular disc; the inner ring of the ball bearing (4) is fixed on the convex cylinder; the outer ring of the ball bearing (4) is fixed on the inner wall of the motor protective cover (1); the base (6) is fixed to the disc.

As an improvement of the hand-held clamp for grinding and polishing, the clamp also comprises an anti-skid rubber sleeve (3); the anti-skid rubber sleeve (3) is tightly sleeved outside the motor protective cover (1).

The polishing handheld clamp has the beneficial effects that: the two movable seats are driven to be close to each other by rotating the double-rotation-direction bolt, so that the two clamping pieces are close to each other to clamp a workpiece, and the rotation of the workpiece is driven by the rotation of the motor to use the workpiece for polishing and grinding; the clamp is compact in structure, can be used for machining workpieces with smaller or thinner mass, is convenient to use, has low energy consumption, obviously improves the grinding efficiency, is convenient to disassemble, and can be used for replacing clamping pieces with different sizes to clamp the workpieces with different sizes.

Drawings

So that the manner in which the above recited features and advantages of the present invention are attained and can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings.

FIG. 1 is a schematic view of an external structure of a hand-held grinding and polishing fixture according to the present invention;

FIG. 2 is an exploded view of the sanding and polishing hand-held clamp of FIG. 1;

FIG. 3 is a cross-sectional view of the sanding and polishing hand-held clamp of FIG. 1;

FIG. 4 is a top view of a base in the sanding and polishing hand-held clamp of FIG. 1;

FIG. 5 is a bottom view of the base of FIG. 4;

FIG. 6 is a top view block diagram of the sanding and polishing hand-held jig of FIG. 1 with the movable seat and the double-handed bolt installed in the base;

FIG. 7 is a bottom view of the apparatus of FIG. 6;

fig. 8 is a structural view of two movable seats connected in series by a double-handed bolt.

In the figure: the anti-skidding type motor comprises a motor protective cover-1, a motor-2, an output end-21, an anti-skidding rubber sleeve-3, a flared opening-11, a ball bearing-4, an inner steel ring-41, an outer steel ring-42, balls-43, a rotating platform-5, a large circular chassis-51, a cylinder-52, a base-6, a straight sliding groove-61, a strip-shaped groove-62, a double-rotation-direction bolt-7, an annular protruding portion-71, a movable seat-8, a sliding block-81, a connecting block-82, a clamping piece-83 and a V-shaped notch-830.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further explained by the specific embodiments.

Referring to fig. 1-2, the present invention provides a technical solution of a hand-held clamp for polishing: the anti-skidding type motor protective cover comprises a motor protective cover 1, a motor 2, an anti-skidding rubber sleeve 3, a ball bearing 4, a rotating platform 5, a base 6, a double-rotation-direction bolt 7 and two opposite movable seats 8. The motor 2 may be a twelve tooth motor.

Motor protection cover 1 overlaps on motor 2, and motor 2's main part is fixed on motor protection cover 1, avoids the hand to grab always on motor. The antiskid rubber sleeve 3 is sleeved outside the motor protection cover 1 to increase the hand-held friction force.

Referring to fig. 3, the output end 21 of the motor 2 and the rotary platform 5 are fixed to each other by shaft hole fit, and the motor is controlled by an external controller to work to drive the rotary platform 5 to rotate. The external controller and the motor 2 are connected to a common driving link, which belongs to the common knowledge in the field, and the external controller is mainly used for protecting a mechanical device, so the control mode and the circuit connection mode are not explained in detail.

The lower end of the motor protection cover 1 is flared to form a flared opening 11, and the ball bearing 4 is mounted in the flared opening 11. The ball bearing 4 comprises an inner steel ring 41, an outer steel ring 42 and a plurality of balls 43 in the middle. The outer steel ring 42 is fixed to the inner wall of the flare 11.

The structure of the rotary platform 5 comprises a large circular base plate 51 and an upward convex cylinder 52, and the cylinder 52 and the large circular base plate 51 are integrally formed. The cylinder 52 of the rotary platform 5 is embedded in the inner ring 41 of the ball bearing 4. The inner ring 41 of the ball bearing 4 is fixedly connected with the upper convex cylinder 52 of the rotary platform 5. The output 21 of the electric motor 2 is inserted into the cylinder 52 and fixedly connected. Because the ball bearing 4 is arranged, the friction force in the power transmission process is reduced in a rolling mode, the shaking caused by the fact that the ball bearing 4 is not arranged is prevented, and the transmission efficiency of mechanical power is improved.

A plurality of (for example, two screw holes at the left and right ends) are arranged between the large circular base plate 51 of the rotary platform 5 and the base 6, and are matched and fixed by screwing in screws, and the mechanical energy of the motor 2 can be converted into the rotation kinetic energy of the base 6 because the output end 21 of the motor 2 is fixed with the rotary platform 5. The base 6 is used for installing two opposite movable seats 8 and driving the two opposite movable seats 8 to rotate stably.

As shown in fig. 4-5, a horizontal straight chute 61 is formed on the upper surface of the base 6, the inner bottom surface of the straight chute 61 is planar, a strip-shaped groove 62 penetrating through the bottom surface of the base 6 is formed at the middle bottom of the horizontal straight chute 61, the width of the strip-shaped groove 62 is smaller than that of the horizontal straight chute 61, and the strip-shaped groove 62 is parallel to the horizontal straight chute 61.

As shown in fig. 2 and 8, each movable seat 8 includes a sliding block 81, a connecting block 82, and a clip 83 fixed to each other. The upper end of the connecting block 82 is connected with the sliding block 81, and the lower end is connected with the clamping piece 83. Wherein, connecting block 82 and clamping piece 83 can be integrated into one piece, and connecting block 82 and slider 81 carry out detachable fixed connection through the screw, the installation of being convenient for is dismantled. The two opposite sliding blocks 81 are preferably plate-shaped, and both fit on the inner bottom surface of the horizontal straight sliding groove 61, that is, cover the upper surface of the strip-shaped groove 62. The connecting block 82 can be square or cylindrical, and the width of the connecting block is equal to that of the strip-shaped groove 62, so that the connecting block 82 can be matched to downwards penetrate through the strip-shaped groove 62 and cannot shake forwards and backwards. The clamping pieces 83 are preferably plate-shaped and are attached to the outer bottom surface of the strip-shaped groove 62, namely the outer bottom surface of the base 6, the outer bottom surface is planar, the two clamping pieces 83 can be kept on the same plane due to the design, and the surface to be polished of a workpiece clamped by the two clamping pieces 83 can be flush with the polishing machine. Simultaneously, this device still sets up the height that highly equals bar groove 62 of connecting block 82 for the slider 81 and the clamping piece 83 of sliding seat 8 centre gripping respectively at the upper and lower surface of bar groove 62, make the sliding seat 8 can only be at the axial round trip movement in bar groove 62, and can not carry out the reverse removal of width, make the counterpoint of two clamping pieces 83 accurate stable.

As shown in fig. 6 to 7, the double-handed bolt 7 is inserted into the base 6, specifically, the double-handed bolt 7 axially passes through the strip-shaped groove 62 and is parallel to the strip-shaped groove 62. The double-handed bolt 7 passes through the strip-shaped groove 62 and also passes through two connecting pieces 82 in the strip-shaped groove 62.

The middle of the double-screwing-direction bolt 7 is free of threads, and the two sides of the double-screwing-direction bolt are threads in opposite directions. The two connecting blocks 82 are respectively located on two opposite threads of the double-handed bolt 7, preferably symmetrically with respect to the middle unthreaded position of the double-handed bolt 7. The double-handed bolt 7 is constrained to perform only rotational movement in the base 6 and not axial movement relative to the base 6. For example, the end of the bi-directional bolt 7 abuts against the base 6 and cannot move forward, and the shaft of the bi-directional bolt 7 near the nut end is provided with an annular protrusion 71 which abuts against the inner wall of the strip-shaped groove 62 to form a limiting mechanism, so that the bi-directional bolt 7 is prevented from being screwed out and only can rotate in place. The nut 72 is arranged on the outside of the base 6.

Through clockwise or anticlockwise rotation double-rotation-direction bolt 7, two opposite movable seats 8 can be closed towards the middle or separated towards two sides, so that two clamping pieces 83 are close to each other or far away from each other to clamp workpieces with different sizes. For example, when the double-rotation-direction bolt 7 is rotated clockwise, the two clamping pieces 83 are close to each other toward the middle; when the double-handed bolt 7 is rotated counterclockwise, the two jaws 83 are separated to both sides.

Referring to fig. 8, the two clips 83 are disposed opposite to each other, the clips 83 may be square, the opposite sides of the two clips 83 are respectively provided with V-shaped notches 830, the two opposite V-shaped notches 830 may be used to accommodate and clamp a workpiece, when the two clips 83 are close to each other, the two opposite V-shaped notches 830 may clamp the workpiece, and the workpiece is not easily dropped due to the design of the V-shaped notches. The V-shaped notch 830 can select different side lengths and V-shaped angles to hold workpieces of different sizes. After the motor is started, the workpiece is driven to rotate, and the workpiece can be polished by placing the workpiece on the polishing machine.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides a handheld anchor clamps of burnishing and polishing which characterized in that: comprises a motor protective cover (1), a motor (2), a base (6), a double-rotation-direction bolt (7) and two opposite movable seats (8); each movable seat (8) is provided with a clamping piece (83);

the motor (2) is fixed in the motor protective cover (1), and the output end of the motor (2) is fixed on the base (6);

the double-screwing-direction bolt (7) is provided with two sections of opposite threads, and the two movable seats (8) are respectively in threaded connection with the two sections of opposite threads; the double-rotation-direction bolt (7) is mounted on the base (6) and can rotate in the radial direction, and a limiting mechanism is arranged between the double-rotation-direction bolt (7) and the base (6) to limit the double-rotation-direction bolt (7) to move in the axial direction; the double-rotation-direction bolt (7) is rotated to enable the two clamping pieces (83) to approach each other so as to clamp the workpiece.

2. The sanding and polishing hand-held clamp of claim 1, wherein: one side of the base (6) close to the motor (2) is provided with a straight chute, the bottom of the straight chute is provided with a strip-shaped groove penetrating through the base (6), the width of the strip-shaped groove is smaller than that of the straight chute, and the strip-shaped groove is parallel to the straight chute;

the movable seat (8) further comprises a sliding block (81) and a connecting block (82); the sliding block (81) and the clamping piece (83) are respectively fixed at two ends of the connecting block (82); the connecting block (82) is matched with and penetrates through the strip-shaped groove, and the sliding block (81) and the clamping piece (83) are respectively abutted to the inner bottom surface of the straight sliding groove and the outer bottom surface of the base (6); the double-rotation-direction bolt (7) penetrates through the strip-shaped groove and the two connecting blocks (82); the two connecting blocks (82) are respectively in threaded connection with two sections of opposite threads of the double-handed bolt (7).

3. The sanding and polishing hand-held clamp of claim 2, wherein: the connecting block (82) and the clamping piece (83) are integrally formed; the connecting block (82) is fixedly connected with the sliding block (81) through screws.

4. The hand-held clamp for grinding and polishing as claimed in claim 2, wherein: the height of the connecting block (82) is equal to the thickness of the strip-shaped groove.

5. The sanding and polishing hand-held clamp of claim 2, wherein: the end of the double-screwing-direction bolt (7) is exposed out of the base (6), the rod body of the double-screwing-direction bolt (7) adjacent to the end is provided with a limiting block, and the limiting block abuts against the inner wall of the strip-shaped groove.

6. The sanding and polishing handheld fixture of claim 5, wherein: the inner wall of the strip-shaped groove, which is far away from the end of the double-screwing-direction bolt (7), is provided with a cylindrical groove, and the tail end of the double-screwing-direction bolt (7) is embedded into the cylindrical groove.

7. The sanding and polishing hand-held clamp of claim 2, wherein: the sliding block (81) is in a plate shape and is attached to the inner bottom surface of the straight sliding groove; the two clamping pieces (83) are plate-shaped and are attached to the outer bottom surface of the base (6); the opposite sides of the two clamping pieces (83) are provided with symmetrical V-shaped notches.

8. The sanding and polishing hand-held clamp of claim 1, wherein: the clamp further comprises a rotating platform (5); the output end of the motor (2) is firstly fixed with the rotating platform (5), and then the rotating platform (5) is fixed with the base (6).

9. The sanding and polishing hand-held clamp of claim 8, wherein: the clamp further comprises a ball bearing (4); the rotary platform (5) comprises a circular disc and a convex cylinder protruding on the circular disc; the inner ring of the ball bearing (4) is fixed on the convex cylinder; the outer ring of the ball bearing (4) is fixed on the inner wall of the motor protective cover (1); the base (6) is fixed to the disc.

10. The sanding and polishing hand-held clamp of claim 1, wherein: the clamp also comprises an anti-skid rubber sleeve (3); the anti-skid rubber sleeve (3) is tightly sleeved outside the motor protective cover (1).