CN213164126U

CN213164126U - Clamp with bidirectional linkage compression function

Info

Publication number: CN213164126U
Application number: CN202021315197.5U
Authority: CN
Inventors: 张兆祥; 张磊; 郭祥龙
Original assignee: Nanjing Kangni Precision Mechanics Co ltd
Current assignee: Nanjing Kangni Precision Mechanics Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-05-11
Anticipated expiration: 2030-07-07

Abstract

The utility model discloses a take two-way linkage to compress tightly anchor clamps of function. The device comprises two pressing plates, two compression screws, two shift levers, two shift pins, two fixing screws, two bolts and a fixing clamp plate which are symmetrically arranged; two pressing plates are symmetrically arranged at the two sides of the central hole of the fixed clamping plate, namely the workpiece mounting hole; the upper part of the pressure plate is provided with an oval screw hole, a compression screw penetrates through the oval screw hole, and the bottom of the compression screw is screwed into the fixed clamping plate; a notch is formed in the pressure plate, and the poking pin is embedded into the notch; the deflector rod is transversely inserted into a top nut hole of the compression screw; the shifting pin can push the pressure plate to move horizontally in the direction away from or close to the workpiece mounting hole when rotating along with the shifting rod and the compression screw. The clamp can realize simultaneous up-and-down and front-and-back movement; the pressing plate is pushed to move forwards while downward pressing is guaranteed, so that parts can be guaranteed to be pressed, and the pressing plate is pushed to move backwards while upward movement is carried out during loosening, so that the parts can be guaranteed to be taken out; the surface deformation of the part can be ensured to be small while the pressing is ensured, and the vertical movement phenomenon can not occur.

Description

Clamp with bidirectional linkage compression function

Technical Field

The utility model belongs to the technical field of machining, a take two-way linkage to compress tightly anchor clamps of function is related to.

Background

In machining, a workpiece (a part to be machined) is machined by being fixed to a machine tool by a jig. In the process of processing a workpiece, the firmness (clamping or pressing degree) of clamping the workpiece (to-be-processed part) is very important, otherwise, the workpiece may become loose in the process of processing, and the processing quality and safety are further influenced; meanwhile, the positioning accuracy of the workpiece (the part to be machined) is ensured, otherwise, deviation may occur at the machining position, and the machining accuracy and quality are affected.

For the clamp needing to ensure the compression, the following forms are available on the market at present: firstly, the manual pressing mode is inconvenient to clamp, and when the cutting force or the grinding force is large, the part cannot be pressed; and secondly, in a pneumatic or hydraulic pressing mode, when air pressure or hydraulic pressure is suddenly cut off, the clamp can be loosened, and certain potential safety hazards exist. In addition, the existing clamp can not ensure that the surface deformation of the part is small while ensuring the compression, and the phenomenon of vertical movement can occur sometimes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a simple structure, simple to operate, security height, can realize about and around the anchor clamps that the two-way linkage in area of simultaneous movement compressed tightly the function, this anchor clamps can guarantee when compressing tightly that the surface deformation volume that can guarantee the part is little, and the drunkenness phenomenon about can not appearing.

The technical scheme of the utility model as follows:

a clamp with a bidirectional linkage compression function comprises two pressure plates, two compression screws, two shifting pins, two shifting rods, two fixing screws, two inserting pins and a fixing clamp plate, wherein the two pressure plates, the two compression screws, the two shifting pins, the two shifting rods, the two fixing screws and the two inserting pins are symmetrically arranged; the fixed splint is fixed on the machine tool base; the central hole of the fixed clamping plate is a workpiece mounting hole; two pressing plates are symmetrically arranged on two sides of the workpiece mounting hole on the fixed clamping plate; the upper part of the pressure plate is provided with an oval screw insertion hole through which a compression screw penetrates, and the lower part (bottom) of the compression screw is screwed into a screw hole of the fixed clamping plate, i.e. the pressure plate and the fixed clamping plate can be fixedly connected through the compression screw, i.e. the pressure plate can be compressed on the fixed clamping plate through the compression screw; a U-shaped groove is formed in the lower portion of the side edge below the oval screw insertion hole in the pressing plate, and a shifting pin arranged at the middle lower portion of the compression screw is embedded into the U-shaped groove; the bottom of the outer side of the pressure plate is provided with a groove; the fixing screw is fixedly arranged on the fixing clamp plate below the outer bottom groove of the pressure plate, the top of the fixing screw is embedded into the outer bottom groove of the pressure plate, the top of the fixing screw props against the pressure plate, and the pressure plate can be adjusted to a proper height position by adjusting the fixing screw; the bottom of the inner side of the pressing plate is a bottom plane; a bolt is inserted into a bolt hole on a disc of the fixed clamping plate under the bottom plane of the inner side of the pressing plate, a spring is arranged at the bottom in the bolt hole, and the spring pushes against the bolt; the top of the bolt is contacted with the inner bottom plane of the pressure plate;

the compression screw is a special part, a transverse nut hole is formed in a nut at the top of the compression screw, and the deflector rod is transversely inserted into the nut hole at the top of the compression screw; the lower part of a nut of the compression screw is a vertical screw rod, the upper part of the screw rod penetrates through an oval or long-strip-shaped screw insertion hole in the upper part of the pressure plate, and a section of thread in the lower part of the screw rod can be screwed into a screw hole of the fixed clamping plate (so that a workpiece can be compressed downwards); the middle lower part of the screw rod of the compression screw (namely the middle vertical part of the screw) is provided with a shifting pin which protrudes in the horizontal direction, the shifting pin and the compression screw are integrated, and the shifting pin is embedded into a U-shaped groove at the lower part of the side edge of the pressure plate; the shifting pin can horizontally move towards a direction away from or close to a central hole (namely a workpiece mounting hole) of the fixed clamping plate against the pressing plate in the process of rotating along with the shifting rod and the pressing screw.

Furthermore, a groove at the bottom of the outer side of the pressure plate is an L-shaped groove; the top of the fixing screw is embedded into the L-shaped groove at the bottom of the outer side of the pressure plate.

Furthermore, the fixed clamping plate is a disc similar to a flange, and a central hole of the disc is a workpiece mounting hole; two pressing plates are symmetrically arranged on the disc surfaces at the two sides of the workpiece mounting hole of the fixed clamping plate.

Furthermore, the pressing plate, the compression screw, the deflector rod and the fixed clamping plate are all made of steel materials; the pin is also steel.

Further, the bolt is made of copper.

Furthermore, at an oval screw insertion hole at the upper part of the pressure plate, the compression screw is connected and assembled with the pressure plate through a round pad.

The utility model has the advantages that:

the utility model provides a can realize about and around with the anchor clamps of two-way linkage in area of simultaneous movement compress tightly the function, this anchor clamps can promote the clamp plate to move forward when guaranteeing to compress tightly downwards, can guarantee to press the part, realize compressing tightly the function, upward movement promotes the clamp plate rearward movement simultaneously when loosening, can guarantee that the part takes out. The clamp is high in structural rigidity and hardness, simple in structure, convenient to install and high in safety. The clamp is suitable for parts with high requirements, ensures that the surface deformation of the parts is small while the pressing is ensured, and cannot move up and down.

The utility model relates to a take two-way linkage to compress tightly anchor clamps of function has following advantage: the part deformation can be prevented while the pressing is carried out, and the pressing force is moderate through the matching of the plug pin and the spring; the compression screw can push the pressure plate to move forwards and backwards (i.e. towards or away from the central hole of the fixed clamping plate) while rotating downwards; because of the forward and backward movement of the platen, interference of the workpieces can be avoided at the time of loading (mounting the workpieces) and unloading (discharging the workpieces).

Drawings

Fig. 1 is a schematic structural view of a clamp with bidirectional linkage pressing function according to the present invention;

FIG. 2 is a schematic structural view of the clamp with bidirectional linkage compressing function of the present invention;

fig. 3 is a schematic structural view of the pressing plate 2 (left pressing plate 2a) in the present invention;

fig. 4 is a schematic structural view of the present invention in which the pressing plate 2 (left pressing plate 2a) is turned over;

fig. 5 is a schematic structural diagram of the compression screw 3 according to the present invention.

In the figure: 1. fixing screw 2, pressing plate (2a, left pressing plate 2b, right pressing plate) 3, compression screw (3a, left compression screw 3b, right compression screw) 4, deflector rod (4a, left deflector rod 4b, right deflector rod) 5, plug pin 6, workpiece mounting hole 7, deflector pin 8, fixing clamp plate 9, U-shaped groove (namely the lower notch of the side edge of pressing plate 2) 10, oval screw inserting hole 11, L-shaped groove 12, bottom plane 13, nut 14, screw rod 15, thread 16, workpiece

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1-5, the utility model relates to a clamp with bidirectional linkage compressing function, which comprises two bilaterally symmetrical pressing plates 2 (namely, a left pressing plate 2a and a right pressing plate 2b), two bilaterally symmetrical compressing screws 3 (namely, a left compressing screw 3a and a right compressing screw 3 b), a shifting lever 4 (comprising two bilaterally symmetrical shifting levers: a left shifting lever 4a and a right shifting lever 4b), two bilaterally symmetrical shifting pins 7, two bilaterally symmetrical fixing screws 1, two bilaterally symmetrical pins 5 (copper pins) and a fixing splint 8; the fixed splint 8 is fixed on the machine tool base; the fixed clamping plate 8 is a disc similar to a flange, the central hole of the disc is a workpiece mounting hole 6, and a workpiece 16 can be inserted into the workpiece mounting hole 6; two pressing plates 2 are symmetrically arranged on the disc surfaces at two sides of the workpiece mounting hole 6 of the fixed clamping plate 8; the upper part of the pressure plate 2 is provided with an oval screw insertion hole 10, the compression screw 3 penetrates through the oval screw insertion hole, and the lower part (bottom) of the compression screw 3 is screwed into a screw hole of the fixed clamping plate 8, namely, the pressure plate 2 and the fixed clamping plate 8 can be fixedly connected through the compression screw 3, namely, the pressure plate 2 can be compressed on the fixed clamping plate 8 through the compression screw 3; a notch, namely a U-shaped groove 9 is formed in the lower portion of the side edge below the oval screw insertion hole 10 on the pressure plate 2, and the poking pin 7 is embedded into the notch, namely the U-shaped groove 9; the bottom of the outer side of the pressure plate 2 is provided with an L-shaped groove 11; the fixing screw 1 is fixedly arranged on the fixing clamp plate 8 under the L-shaped groove 11 at the bottom of the outer side of the pressure plate 2, the top of the fixing screw 1 is embedded into the L-shaped groove 11 at the outer side of the pressure plate 2, the top of the fixing screw 1 is propped against the pressure plate 2, and the pressure plate 2 can be adjusted to a proper height position by adjusting the fixing screw 1; the bottom of the inner side of the pressure plate 2 is a plane, namely a bottom plane 12; under the inner bottom plane 12 of the pressure plate 2, the bolt 5 is inserted into a bolt hole on a disc of the fixed clamp plate 8, a spring is arranged at the bottom of the bolt 5, namely, the spring is also arranged in the bolt hole and positioned at the bottom in the bolt hole, and the spring props against the bolt 5; the inner bottom plane of the pressing plate 2 contacts the top of the latch 5.

As shown in fig. 5, the compression screw 3 is a special component, a top nut 13 of the compression screw 3 is provided with a transverse nut hole, and the deflector rod 4 is transversely inserted into the top nut hole of the compression screw 3; the lower part of a nut 13 of the compression screw 3 is a vertical screw 14 (a normal screw with a rotatable thread at the lower part), the upper part of the screw 14 passes through an oval screw insertion hole 10 at the upper part of the pressure plate 2 (at the oval screw insertion hole 10, a compression screw 3b is assembled with the pressure plate 2 through a round pad), and a section of thread 15 at the lower part of the screw 14 can be screwed into a screw hole of the fixed clamping plate 8 (the pressure plate 2, the compression screw 3, the deflector rod 4 and the fixed clamping plate 8 are all made of steel materials, so that a workpiece can be compressed downwards through the rotation of the thread 15 of the screw 14 of the compression screw 3); a pin (i.e. a shifting pin 7) protruding in the horizontal direction is arranged at the middle lower part (i.e. the middle vertical part) of a screw rod 14 of the compression screw 3, the shifting pin 7 and the compression screw 3 are integrated (the shifting pin 7 is also made of steel), and the shifting pin 7 is embedded into a lower gap of the side edge of the pressure plate 2, i.e. a U-shaped groove 9; the shifting pin 7 can push (abut against) the pressure plate 2 to move horizontally in a direction away from or close to a central hole of the fixed clamping plate 8 in the process of rotating along with the shifting rod 4 and the compression screw 3 (the horizontal moving distance of the pressure plate 2 is the length of an oval screw insertion hole 10 at the upper part of the pressure plate 2); that is, when the shift lever 4 is pulled by hand, the pressing screw 3 rotates along with the shift lever 4, the shift pin 7 rotates along with the pressing screw 3, and the shift pin 7 horizontally moves away from or close to the central hole (i.e., the workpiece mounting hole 6) of the fixed clamp plate 8 against the pressing plate 2; since the upper portion of the pressing screw 3 is circular and the screw insertion hole 10 of the upper portion of the pressing plate 2 is oval, the pressing screw 3 and the pressing plate 2 do not fit over the entire circumferential surface in the hole, and the thumb pin 7 can be horizontally moved in the screw insertion hole 10 against (abutting) the pressing plate 2 when rotated.

The utility model discloses an assembly method of anchor clamps of function is compressed tightly in two-way linkage in area:

left side: the spring is matched with the bolt 5 and is placed in a bolt hole of the fixed clamping plate 8; assembling the left compression screw 3a with the pressure plate 2 through a round pad (inserting into an oval screw insertion hole 10 at the upper part of the pressure plate 2), and simultaneously screwing the left compression screw 3 into the fixed clamp plate 8 to enable the inner bottom plane 12 of the pressure plate 2 to contact the top of the bolt 5; the fixing screw 1 is screwed into the fixing clamping plate 8, and the pressure plate 2 is adjusted to the proper height position by adjusting the fixing screw 1 (the top of the fixing screw 1 is pressed against the pressure plate 2).

Right side: the spring is matched with the bolt 5 and is placed in a bolt hole of the fixed clamping plate 8; assembling the right compression screw 3b with the pressure plate 2 through the round pad (inserting into the oval screw inserting hole 10 at the upper part of the pressure plate 2), and simultaneously screwing the right compression screw 6 into the fixed clamp plate 8 to enable the inner bottom plane 12 of the pressure plate 2 to contact the top of the bolt 5; the fixing screw 1 is screwed into the fixing clamping plate 8, and the pressure plate 2 is adjusted to the proper height position by adjusting the fixing screw 1 (the top of the fixing screw 1 is pressed against the pressure plate 2).

The utility model discloses a take two-way linkage to compress tightly the theory of operation of anchor clamps of function:

treat that processing part (work piece) need pass through the utility model discloses an anchor clamps installation is fixed on the solid fixed splint 8 of lathe, just can process. The method for mounting the workpiece, namely the method for using the clamp, comprises the following steps:

(1) as shown in fig. 2, the home position of the shift lever 4 is in a direction perpendicular to the horizontal moving direction of the platen 2; the left deflector rod 4a is pulled leftwards by hand, and the left compression screw 3 rotates leftwards (rotates 90-120 degrees clockwise); the right deflector rod 4b is pulled to the right by hand, and the right compression screw 6 rotates to the right (rotates 90-120 degrees anticlockwise); when the shifting pins 7 on the two sides rotate along with the shifting rods 4 and the compression screws 3, the pressing plate 2 is driven to horizontally move in the direction away from the central hole (namely a workpiece mounting hole) of the fixed clamping plate 8.

(2) Inserting the workpiece 16 into the center hole (i.e., the workpiece mounting hole 6) of the fixing clip 8;

and (3) a compaction principle: after the part is clamped, the driving lever 4 is pulled by hand, and because the left compression screw 3 is in left-handed thread and the right compression screw 6 is in right-handed thread, the left compression screw 3 is rotated leftwards (rotated by 90-120 degrees) and the right compression screw 6 is rotated rightwards (rotated by 90-120 degrees); as the shifting pin 7 and the compression screw 3 are integrated, the shifting pin 7 is embedded into a U-shaped groove 9 which is a notch at the lower part of the side edge of the pressure plate 2, and the shifting pin 7 can push (abut against) the pressure plate 2 to horizontally move in an oval screw insertion hole 10 at the upper part of the pressure plate 2 when rotating along with the shifting pin 4 and the compression screw 3. That is, the pressure plate 2 can be driven to move forward (move horizontally) by the driving lever 4 and the rotating screw 3 driving the driving pin 7, and the rotating screw 3 is ensured to rotate to drive the pressure plate 2 to move forward (i.e. move horizontally in a direction close to the workpiece) while the rotating screw 3 drives the pressure plate 2 to move downward (press), so that the pressing of the workpiece 16 in the horizontal direction and the vertical direction can be ensured. The pressing plate 2 can rotate the compression screw 3 by pulling the shift lever 4 and push (abut) against the shift pin 7 to move forwards and backwards (i.e. move horizontally towards the direction close to or away from the workpiece mounting hole 6) in the horizontal direction opposite to the central hole (towards the position of the workpiece 16) of the fixed clamping plate 8, so that interference cannot be caused during loading (i.e. mounting the workpiece 16) and unloading (i.e. unloading the workpiece 16).

The utility model discloses a take two-way linkage to compress tightly advantage of anchor clamps of function: the part deformation can be prevented while the pressing is carried out, and the pressing force is moderate through the matching of the bolt 5 and the spring; the compression screw 3 can push the pressure plate 2 to move forwards and backwards (i.e. towards or away from the central hole of the fixed clamping plate) while rotating downwards; because of the forward and backward movement of the platen 2, interference of the workpiece 16 can be avoided at the time of loading (mounting the workpiece) and unloading (discharging the workpiece). The clamp can ensure that the surface deformation of the part is small while ensuring the compression, and the phenomenon of vertical movement can not occur.

Claims

1. A clamp with a bidirectional linkage compression function is characterized by comprising two symmetrically-arranged pressing plates, two compression screws, two shifting pins, two shifting rods, two fixing screws, two inserting pins and a fixing clamp plate; the fixed splint is fixed on the machine tool base; the central hole of the fixed clamping plate is a workpiece mounting hole; two pressing plates are symmetrically arranged on two sides of the workpiece mounting hole on the fixed clamping plate; the upper part of the pressure plate is provided with an oval screw insertion hole through which a compression screw penetrates, and the bottom of the compression screw is screwed into a screw hole of the fixed clamping plate, namely the pressure plate and the fixed clamping plate can be fixedly connected through the compression screw; the lower part of the side edge below the bolt inserting hole on the pressure plate is provided with a U-shaped groove, and a shifting pin arranged at the middle lower part of the compression bolt is embedded into the U-shaped groove; the bottom of the outer side of the pressure plate is provided with a groove; a fixing screw is fixedly arranged on the fixing clamp plate below the outer bottom groove of the pressure plate, the top of the fixing screw is embedded into the outer bottom groove of the pressure plate, and the top of the fixing screw abuts against the pressure plate; the bottom of the inner side of the pressing plate is a bottom plane; a bolt is inserted into a bolt hole of the fixed clamping plate under the bottom plane of the inner side of the pressing plate, a spring is arranged at the bottom in the bolt hole, and the spring pushes against the bolt; the top of the bolt is contacted with the inner bottom plane of the pressure plate;

a transverse nut hole is formed in a top nut of the compression screw, and the deflector rod is transversely inserted into the top nut hole of the compression screw; the lower part of a nut of the compression screw is a vertical screw rod, the upper part of the screw rod penetrates through a screw inserting hole at the upper part of the pressure plate, and a section of thread at the lower part of the screw rod can be screwed into a screw hole of the fixed clamping plate; the middle lower part of a screw rod of the compression screw is provided with a shifting pin protruding in the horizontal direction, the shifting pin and the compression screw are integrated, and the shifting pin is embedded into a U-shaped groove at the lower part of the side edge of the pressure plate; the shifting pin can push the pressure plate to move horizontally in the direction of leaving or approaching the central hole of the fixed clamping plate, namely the workpiece mounting hole, in the process of rotating along with the shifting rod and the compression screw.

2. The clamp with the bidirectional linkage pressing function as recited in claim 1, wherein the outer bottom groove of the pressing plate is an L-shaped groove; the top of the fixing screw is embedded into the L-shaped groove at the bottom of the outer side of the pressure plate.

3. The clamp with the bidirectional linkage pressing function as recited in claim 2, wherein the fixed clamping plate is a disk like flange, and a central hole of the disk is a workpiece mounting hole; two pressing plates are symmetrically arranged on the disc surfaces at the two sides of the workpiece mounting hole of the fixed clamping plate.

4. The clamp with the bidirectional linkage pressing function according to claim 1, 2 or 3, wherein the pressing screw is connected with the pressing plate through a round pad at an oval screw insertion hole at the upper part of the pressing plate.

5. The clamp with the bidirectional linkage pressing function as recited in claim 1, 2 or 3, wherein the pressing plate, the pressing screw, the shifting rod and the fixing splint are all made of steel; the shifting pin is also made of steel.

6. The clamp with the bidirectional linkage pressing function as recited in claim 1, 2 or 3, wherein the bolt is made of copper.