CN114012473A

CN114012473A - Automatic fixture for multi-axis engraving machine

Info

Publication number: CN114012473A
Application number: CN202111422708.2A
Authority: CN
Inventors: 魏伟; 朱永锦
Original assignee: Zhejiang Nengwei Technology Co ltd
Current assignee: Zhejiang Nengwei Technology Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-02-08
Anticipated expiration: 2041-11-26
Also published as: CN114012473B

Abstract

The invention discloses an automatic clamp of a multi-shaft engraving and milling machine, which belongs to the technical field of machining and comprises a base (1), wherein a positioning clamp (2) is arranged on the base (1), a mounting groove (3) is formed in the upper surface of the positioning clamp (2), a clamping mechanism (4) corresponding to the end part of a workpiece (17) is also arranged on the base (1), the clamping mechanism (4) comprises a clamping rod (5), a driving piece (6) for driving the clamping rod (5) to move along the longitudinal direction and a pressing part for pressing the end part of the workpiece (17) by the clamping rod (5), the movable fit between a rocker (10) and a connecting rod (11) is utilized to realize that the rocker (10) rotates around a pin shaft (16) while moving along the longitudinal direction, the clamping rod (5) is driven to automatically extend into the end part of the workpiece (17) to clamp and fix the workpiece (17), and the workpiece (17) can be automatically released after machining is finished, the processing precision is ensured, the manual operation is avoided, and the time and the labor are saved.

Description

Automatic clamp of multi-axis engraving and milling machine

Technical Field

The invention belongs to the technical field of machining, and particularly relates to an automatic clamp for a multi-shaft engraving and milling machine.

Background

The engraving and milling machine is a numerical control machine tool, can perform non-contact cutting and punching on metal or nonmetal plates and pipes, and is good in processing quality and high in efficiency. The work piece is before the finishing impression processing, need be fixed in the blank work piece on the anchor clamps of finishing impression machine earlier, fixes the blank work piece through anchor clamps, prevents that in the course of working, blank work piece production from rocking and the displacement, influences the machining precision, and the back is accomplished in the processing, takes off the work piece from anchor clamps again. In prior art, push away the work piece inside with the depression bar through the manual work usually, drive the depression bar through the cylinder and move down and compress tightly the work piece, upward movement loosens the work piece, still need take out the depression bar from the work piece is inside through the manual work after loosening, just can continue to process next product, and work efficiency is low, increases the cost of labor.

The utility model discloses a utility model patent that application number is CN201821661087.7 discloses a disposable copper milling fixture for bull numerical control cnc engraving and milling machine, including the anchor clamps bottom plate, be equipped with the three positioning seat that is triangular distribution on the anchor clamps bottom plate, the positioning seat includes the pedestal, can dismantle on the pedestal and be connected with the location stand, and the spiro union has the reference column on the location stand, and location stand and reference column are perpendicular quadrature. The three positioning columns tightly push the workpiece from three directions, namely, the workpiece is clamped, and the workpiece is convenient to process. But this milling fixture is mainly through with reference column threaded connection on the stand of location to inside stretching into the work piece, realize pressing from both sides tight fixed to the work piece, need manual operation like this, and need the manual work to screw the reference column, the operation is wasted time and energy, presss from both sides tight fixed effect and also is not ideal, because rocking of the work piece in the course of working, the reference column is easily followed the stand of location and is screwed out and lead to droing, influences the machining precision.

Disclosure of Invention

The invention aims to solve the technical problems that a clamp in an engraving and milling machine in the prior art needs manual operation, wastes time and labor, influences the processing precision of a workpiece and the like, provides an automatic clamp of a multi-shaft engraving and milling machine, which is applied to the engraving and milling machine and can automatically clamp, fix and loosen the workpiece, and reduces manual operation.

In order to solve the technical problem, the invention provides an automatic clamp of a multi-shaft engraving and milling machine, which comprises a base, wherein a positioning clamp is arranged on the base, a mounting groove matched with the outer surface of a workpiece is formed in the upper surface of the positioning clamp, a clamping mechanism corresponding to the end parts of two ends of the workpiece is further arranged on the base, the clamping mechanism comprises a clamping rod, a driving part and a pressing part, the driving part is used for driving the clamping rod to move along the longitudinal direction, the pressing part is used for pressing the end part of the workpiece in the longitudinal moving process of the clamping rod, and the clamping rod automatically extends into the workpiece to clamp and fix the workpiece in the process of moving up and down along the longitudinal direction.

As a further improvement measure of the present invention, the driving member is disposed on the base through a mounting plate, an output end is disposed on the driving member, and a through hole through which the output end can pass is disposed on the base, so as to fix the driving member.

As a further improvement measure of the invention, a U-shaped connecting block is arranged at the end of the output end, the compressing component comprises a rocker with one end hinged with the connecting block, the clamping rod is arranged at the other end of the rocker and faces towards the workpiece, the compressing component further comprises a connecting rod arranged on the upper surface of the driving component along the longitudinal direction, and one end of the connecting rod, which is far away from the driving component, is movably connected with one end of the rocker, which is far away from the connecting block.

As a further improvement measure of the present invention, the number of the connecting rods is two, the two connecting rods are respectively arranged on two sides of the rocker, one end of each of the two connecting rods, which is far away from the driving member, is respectively provided with a first connecting hole, the first connecting hole is circular, the rocker is provided with a second connecting hole, which corresponds to the first connecting hole, the second connecting hole is provided with an arc-shaped long hole, a connecting rod is inserted into the first connecting hole and the second connecting hole, and two ends of the connecting rod are respectively connected with the two connecting rods.

As a further improvement measure of the present invention, one end of the connecting hole two, which is far away from the connecting block, is arranged along the longitudinal direction, one end of the connecting hole two, which is close to the connecting block, is inclined towards the workpiece direction, one end of the clamping rod is towards the workpiece, the other end of the clamping rod is opposite to one end of the connecting hole two, which is arranged along the longitudinal direction, and the clamping rod is perpendicular to one end of the connecting hole two, which is arranged along the longitudinal direction.

As a further improvement measure of the invention, the connecting rod is arranged in an inverted L shape, one longitudinal end of the connecting rod is parallel to the output end, a supporting block is arranged between the end part of one longitudinal end of the connecting rod and the driving part, the connecting rod is detachably connected with the supporting block, and the first connecting hole is arranged at the end part of one transverse end of the connecting rod.

As a further improvement measure of the invention, a groove is formed in the U-shaped connecting block, two side faces of the groove are respectively provided with a first hinge hole, a second hinge hole is formed in the rocker, a pin shaft is arranged between the first hinge hole and the second hinge hole, and the end part of one end, hinged with the connecting block, of the rocker is in a circular arc shape.

Compared with the prior art, the invention has the beneficial effects that: 1. according to the invention, by utilizing the movable fit between the rocker and the connecting rod, the rocker is rotated around the pin shaft in the process that the output end of the driving piece drives the connecting block to move up and down along the longitudinal direction, so that the clamping rod is driven to automatically extend into the end part of the workpiece to clamp and fix the workpiece, the workpiece is prevented from shaking, shifting and the like in the processing processes of cutting, punching and the like, and the processing precision is ensured; 2. the clamping rod clamping device is simple in structure, the longitudinal movement of the clamping rod and the automatic clamping and loosening operation of the workpiece can be realized by using one driving piece, the manual operation is avoided, and the time and the labor are saved; 3. compared with manual operation, the clamping device is driven by the driving piece, the clamping effect is more stable, the clamping rod cannot fall off due to the shaking of the workpiece in the machining process, the machining progress of the workpiece is guaranteed, and the production efficiency is improved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is an enlarged perspective view of the clamping mechanism of the present invention.

Fig. 5 is an enlarged schematic view of the clamping mechanism of the present invention in a compressed state.

Fig. 6 is an enlarged schematic view of the clamping mechanism of the present invention in a released state.

Fig. 7 is an enlarged schematic view of the rocker of the present invention.

The reference numbers illustrate: 1-base, 2-positioning clamp, 3-mounting groove, 4-clamping mechanism, 5-clamping rod, 6-driving piece, 7-output end, 8-through hole, 9-connecting block, 10-rocker, 11-connecting rod, 12-connecting hole II, 13-connecting rod, 14-supporting block, 15-groove, 16-pin shaft and 17-workpiece.

Detailed Description

The invention will be further explained with reference to the drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.

The automatic clamp of the multi-shaft engraving and milling machine comprises a base 1, wherein a positioning clamp 2 is arranged on the base 1, a mounting groove 3 matched with the outer surface of a workpiece 17 is formed in the upper surface of the positioning clamp 2, the workpiece 17 to be machined is placed in the mounting groove 3, in the embodiment, in order to improve the working efficiency, a plurality of positioning clamps 2 which are sequentially arranged can be arranged on the base 1, the simultaneous machining of the workpieces 17 is realized, and the production and machining time is saved.

As shown in fig. 1 to 7, in order to prevent the workpiece 17 from shaking or moving during the machining process and affecting the machining precision of the workpiece 17, the base 1 is further provided with clamping mechanisms 4 corresponding to the end portions of the two ends of the workpiece 17, and the clamping mechanisms are used for clamping and fixing the two end portions of the workpiece 17. Fixture 4 includes supporting rod 5 and is used for driving supporting rod 5 along longitudinal direction motion's driving piece 6, and driving piece 6 sets up to the cylinder, supporting rod 5 along the horizontal direction set up and with work piece 17 tip is relative, and driving piece 6 passes through the mounting panel and sets up on base 1, and in order to realize spatial structure's reasonable overall arrangement, driving piece 6 can be installed in base 1's lower surface, is provided with output 7 on driving piece 6, sets up the through-hole 8 that can supply output 7 to pass on the base 1, and driving piece 6 drives output 7 and drives supporting rod 5 and remove along longitudinal direction, makes supporting rod 5 relative with work piece 17.

As shown in fig. 1, 4, 5 and 6, in order to automatically clamp and fix the end of the workpiece 17 by the clamping rod 5 and reduce manual operations, the clamping mechanism 4 further includes a pressing component for pressing the end of the workpiece 17 by the clamping rod 5 in the longitudinal movement process, the pressing component includes a rocker 10 and a connecting rod 11 disposed on the upper surface of the driving component 6 along the longitudinal direction, and the clamping rod 5 is disposed on the rocker 10.

The end of the output end 7 is provided with a U-shaped connecting block 9, a groove 15 is formed in the U-shaped connecting block 9, a first hinge hole is formed in each of two side faces of the groove 15, a second hinge hole is formed in the rocker 10, a hinge pin 16 is arranged between the first hinge hole and the second hinge hole, one end of the rocker 10 is hinged to the connecting block 9 through the hinge pin 16, the bottom of the groove 15 is a plane, the rocker 10 can rotate relative to the connecting block 9 around a hinge point conveniently, the end portion of the hinged end of the rocker 10 and the connecting block 9 is arc-shaped, a gap is formed between the end portion of the rocker 10 and the bottom of the groove 15, and the rocker 10 is prevented from being in contact with the bottom of the groove 15 in the rotating process.

As shown in fig. 1, 4, 5 and 6, the number of the connecting rods 11 is two, the two connecting rods are respectively arranged on two sides of the rocker 10, one ends of the two connecting rods 11, which are far away from the driving part 6, are respectively provided with a first connecting hole, the rocker 10 is provided with a second connecting hole 12 corresponding to the first connecting hole, the first connecting hole and the second connecting hole 12 are internally inserted with a connecting rod 13, two ends of the connecting rod 13 are respectively connected with the two connecting rods 11, and the one ends of the connecting rods 11, which are far away from the driving part 6, and one ends of the rocker 10, which are far away from the connecting block 9, are movably connected through the connecting rod 13.

As shown in fig. 4 to 6, in order to facilitate the connection between the connecting rod 11 and the rocker 10, the connecting rod 11 is arranged in an inverted "L" shape, the longitudinal end of the connecting rod 11 is parallel to the output end 7, a supporting block 14 is arranged between the end of the longitudinal end of the connecting rod 11 and the driving member 6, the connecting rod 11 is detachably connected with the supporting block 14, the first connecting hole is arranged at the end of the transverse end of the connecting rod 11, and the transverse end of the connecting rod 11 is arc-shaped connected with the longitudinal end of the connecting rod 11.

In this embodiment, as shown in fig. 4 to 6, the first connecting hole is set to be circular, as shown in fig. 7, the second connecting hole 12 is set to be an arc-shaped long hole, because the connecting rod 11 is set on the driving member along the longitudinal direction and is fixed, and the first connecting hole on the connecting rod 11 is movably connected with the second connecting hole 12 on the rocker 10 through the connecting rod 13, therefore, in the process that the output end 7 of the driving member 6 drives the connecting block 9 to drive the rocker 10 to move along the longitudinal direction, according to the difference of the horizontal height of the rocker 10, the connecting rod 13 can be respectively located at different positions in the arc-shaped long connecting hole 12, so that the rotation angle and direction of the rocker 10 around the hinge point are limited by the connecting rod 13, and the rotation angle of the rocker can be controlled by controlling the radian and the length of the second connecting hole 12.

As shown in fig. 1 to 3, in the present embodiment, the workpieces 17 are all placed in the installation groove 3 of the positioning fixture 2 along the horizontal direction, and therefore, as shown in fig. 4 to 6, in order to realize the clamping and releasing effects of the clamping rods on the workpieces 17, one end of the connecting hole two 12, which is far away from the connecting block 9, is disposed along the longitudinal direction, one end of the connecting hole two 12, which is close to the connecting block 9, is inclined toward the direction of the workpieces 17, the clamping rod 5 is disposed on the side surface of the rocker 10, which is far away from the end of the connecting block 9, one end of the clamping rod 5 faces the workpieces 17, the other end of the clamping rod 5 is opposite to one end of the connecting hole two 12, which is disposed along the longitudinal direction, and the clamping rod 5 is perpendicular to one end of the connecting hole two 12, which is disposed along the longitudinal direction.

As shown in fig. 6, when the output end 7 of the driving member 6 drives the connecting block 9 to move upward along the longitudinal direction, due to the upward movement of the rocker 10, the connecting rod 13 is located at one end of the connecting hole two 12 close to the connecting block 9, and because one end of the connecting hole two 12 close to the connecting block 9 inclines towards the workpiece 17, the rocker 10 rotates around the hinge point, and drives the clamping rod 5 to incline towards the side far away from the workpiece 17, and the inclination angle is the same as the inclination angle of one end of the connecting hole two 12 close to the connecting block 9 towards the workpiece 17; as shown in fig. 5, when the output end 7 of the driving member 6 drives the connecting block 9 to move downward along the longitudinal direction, due to the downward movement of the rocker 10, the connecting rod 13 gradually moves from one end of the connecting hole two 12 close to the connecting block 9 to one end of the connecting hole two 12 far from the connecting block 9, and because one end of the connecting hole two 12 far from the connecting block 9 is arranged along the longitudinal direction, therefore, the rocker 10 at this time rotates to the vertical direction around the hinge point, in the rotating process of the rocker 10, the clamping rod 5 extends into the workpiece, and is finally arranged on the inner wall of one end part of the workpiece 17 in the horizontal direction, and along with the downward driving of the driving member 6 along the longitudinal direction, the clamping rod 5 plays a role in compressing and clamping the workpiece 17. Carry out the in-process that moves up, down along longitudinal direction at driving piece 6, rocker 10 rotates around round pin axle 16, and the pivoted angle receives the restriction because of the cooperation between connecting rod 13 and the second 12 of connecting hole, realize supporting rod 5 and carry out the centre gripping fixed to work piece 17 in the work piece 17 tip is stretched into automatically in the longitudinal movement in-process, prevent that work piece 17 from appearing rocking, the condition such as aversion in the course of working such as cutting, punch, guarantee the machining precision, manual operation has also been avoided simultaneously, more labour saving and time saving.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that several modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.

Claims

1. An automatic fixture for a multi-axis engraving machine, comprising a base (1), a positioning fixture (2) is arranged on the base (1), and an upper surface of the positioning fixture (2) is provided with a surface corresponding to the outer surface of the workpiece (17). The adapted installation groove (3) is characterized in that the base (1) is further provided with clamping mechanisms (4) corresponding to both ends of the workpiece (17), and the clamping mechanisms (4) It includes a clamping rod (5), a driving member (6) for driving the clamping rod (5) to move in the longitudinal direction, and a driving member (6) for realizing the clamping rod (5) to the workpiece (17) during the longitudinal movement. ) is a compression part that compresses the ends.

2 . The automatic fixture for a multi-axis engraving machine according to claim 1 , wherein the driving member ( 6 ) is arranged on the base ( 1 ) through a mounting plate, and the driving member ( 6 ) is arranged on the base ( 1 ). 3 . There is an output end (7), and the base (1) is provided with a through hole (8) through which the output end (7) can pass.

3 . The automatic fixture for a multi-axis engraving machine according to claim 2 , wherein the end of the output end ( 7 ) is provided with a “U”-shaped connecting block ( 9 ), and the pressing member comprises: 4 . A rocker (10) whose one end is hinged with the connecting block (9), the clamping rod (5) is arranged on the other end of the rocker (10), and the clamping rod (5) faces the workpiece (17), the pressing member further comprises a connecting rod (11) arranged on the upper surface of the driving member (6) in the longitudinal direction, and one end of the connecting rod (11) away from the driving member (6) is connected to the One end of the rocker (10) away from the connecting block (9) is movably connected.

4. The automatic fixture for a multi-axis engraving machine according to claim 3, wherein the number of the connecting rods (11) is set to two, which are respectively arranged on both sides of the rocker (10), and the two One end of each of the connecting rods (11) away from the driving member (6) is respectively provided with a connecting hole one, the connecting hole one is set to be circular, and the rocker (10) is provided with a connecting hole corresponding to the connecting hole. The corresponding connecting hole two (12), the connecting hole two (12) is set as an arc-shaped elongated hole, and a connecting rod (13) is inserted into the connecting hole one and the connecting hole two (12), Two ends of the connecting rod (13) are respectively connected with the two connecting rods (11).

5 . The automatic fixture for a multi-axis engraving machine according to claim 4 , wherein the second connecting hole ( 12 ) is arranged along the longitudinal direction at one end away from the connecting block ( 9 ). 6 . 12) One end close to the connecting block (9) is inclined towards the workpiece (17), one end of the clamping rod (5) faces the workpiece (17), and the other end of the clamping rod (5) is connected to the One end of the second hole (12) arranged in the longitudinal direction is opposite, and the clamping rod (5) is perpendicular to one end of the second connecting hole (12) arranged in the longitudinal direction.

6. The automatic fixture for a multi-axis engraving machine according to claim 4, wherein the connecting rod (11) is set in an inverted "L" shape, and one longitudinal end of the connecting rod (11) is connected to the output The ends (7) are parallel, and a support block (14) is provided between the end of one longitudinal end of the connecting rod (11) and the driving member (6), and the connecting rod (11) and the support block (14) Removable connection, the connection hole is opened at the end of the lateral end of the connecting rod (11).

7 . The automatic fixture for a multi-axis engraving machine according to claim 3 , wherein a groove ( 15 ) is formed in the “U”-shaped connecting block ( 9 ), and the groove ( 15 ) has a groove ( 15 ). 8 . Two sides are respectively provided with a hinge hole 1, the rocker (10) is provided with a hinge hole 2, a pin shaft (16) is arranged between the hinge hole 1 and the hinge hole 2, the rocker (10) ) hinged with the connecting block (9) is arranged in a circular arc shape.