Multi-axis engraving machine automatic fixture

Abstract

The present invention discloses an automatic clamp for a multi-axis precision engraving machine, which belongs to the field of mechanical processing technology. The clamp comprises a base (1), a positioning clamp (2) is provided on the base (1), and a mounting groove (3) is provided on the upper surface of the positioning clamp (2). The base (1) is also provided with a clamping mechanism (4) corresponding to the end of a workpiece (17), the clamping mechanism (4) comprises a clamping rod (5), a driving member (6) for driving the clamping rod (5) to move in the longitudinal direction, and a pressing member for realizing that the clamping rod (5) presses the end of the workpiece (17). The present invention utilizes the movable cooperation between the rocker (10) and the connecting rod (11) to realize that the rocker (10) moves in the longitudinal direction while rotating around the pin shaft (16), thereby driving the clamping rod (5) to automatically extend into the end of the workpiece (17) to clamp and fix the workpiece (17). After the processing is completed, the workpiece (17) can be automatically released, thereby ensuring the processing accuracy, avoiding manual operation, and saving time and labor.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to an automatic clamp for a multi-axis precision engraving machine. Background Art

[0002] A precision engraving machine is a type of CNC machine tool that can perform non-contact cutting and punching on metal or non-metallic plates and pipes, with good processing quality and high efficiency. Before the workpiece is precision engraved, the rough workpiece needs to be fixed on the fixture of the precision engraving machine. The rough workpiece is fixed by the fixture to prevent the rough workpiece from shaking and displacement during the processing, which affects the processing accuracy. After the processing is completed, the workpiece is removed from the fixture. In the existing technology, a pressure rod is usually pushed into the inside of the workpiece manually, and the pressure rod is driven downward by a cylinder to press the workpiece, and then moved upward to release the workpiece. After release, the pressure rod needs to be manually removed from the inside of the workpiece before the next product can be processed. This results in low work efficiency and increased labor costs.

[0003] The utility model patent with application number CN201821661087.7 ​​discloses a disposable copper milling fixture for a multi-head CNC precision engraving machine, including a fixture base plate, on which three locating seats distributed in a triangular shape are provided, the locating seats including a seat body, a locating column detachably connected to the seat body, a locating column screwed on the locating column, and the locating columns and the locating columns are vertically orthogonal. The three locating columns press the workpiece from three directions, that is, the workpiece is clamped, which is convenient for workpiece processing. However, the milling fixture mainly achieves clamping and fixing the workpiece by threading the locating column onto the locating column, thereby extending into the interior of the workpiece. This also requires manual operation, and the locating column needs to be tightened manually. The operation is time-consuming and labor-intensive, and the clamping effect is not ideal. Due to the shaking of the workpiece during processing, the locating column is easily unscrewed from the locating column and falls off, affecting the processing accuracy. Summary of the Invention

[0004] The purpose of the present invention is to overcome the technical problems in the prior art that the fixtures in the precision engraving machine require manual operation, which is time-consuming and labor-intensive and affects the processing accuracy of the workpiece. The present invention provides a multi-axis precision engraving machine automatic fixture that can automatically clamp, fix and release the workpiece, thereby reducing manual operation.

[0005] In order to solve the above technical problems, the present invention provides an automatic clamp for a multi-axis precision engraving machine, comprising a base, a positioning clamp is provided on the base, and an upper surface of the positioning clamp is provided with a mounting groove adapted to the outer surface of the workpiece. The base is also provided with a clamping mechanism corresponding to both end portions of the workpiece, the clamping mechanism comprising a clamping rod, a driving member for driving the clamping rod to move in a longitudinal direction, and a clamping member for realizing that the clamping rod presses the end portion of the workpiece during the longitudinal movement, so that the clamping rod automatically extends into the interior of the workpiece and clamps and fixes the workpiece during the up-and-down movement of the clamping rod in the longitudinal direction.

[0006] As a further improvement measure of the present invention, the above-mentioned driving member is arranged on the base through a mounting plate, the driving member is provided with an output end, and the base is provided with a through hole for the output end to pass through, thereby fixing the driving member.

[0007] As a further improvement measure of the present invention, the end of the above-mentioned output end is provided with a "U"-shaped connecting block, the clamping component includes a rocker with one end hinged to the connecting block, the clamping rod is provided at the other end of the rocker, and the clamping rod is facing the workpiece, the clamping component also includes a connecting rod provided on the upper surface of the driving member along the longitudinal direction, and the end of the connecting rod away from the driving member is movably connected to the end of the rocker away from the connecting block.

[0008] As a further improvement measure of the present invention, the number of the above-mentioned connecting rods is set to two, which are respectively arranged on both sides of the rocker. The two connecting rods are respectively provided with a connecting hole one at one end away from the driving member, and the connecting hole one is set to be circular. The rocker is provided with a connecting hole two corresponding to the connecting hole one, and the connecting hole two is set to be an arc-shaped long hole. Connecting rods are inserted into the connecting hole one and the connecting hole two, and the two ends of the connecting rod are respectively connected to the two connecting rods.

[0009] As a further improvement measure of the present invention, the above-mentioned connecting hole 2 is arranged along the longitudinal direction away from one end of the connecting block, and the end of the connecting hole 2 close to the connecting block is inclined toward the workpiece, one end of the clamping rod is facing the workpiece, and the other end of the clamping rod is opposite to the end of the connecting hole 2 arranged along the longitudinal direction, and the clamping rod is perpendicular to the end of the connecting hole 2 arranged along the longitudinal direction.

[0010] As a further improvement measure of the present invention, the above-mentioned connecting rod is arranged in an inverted "L" shape, one longitudinal end of the connecting rod is parallel to the output end, and a support block is arranged between the end of the longitudinal end of the connecting rod and the driving member, the connecting rod and the support block are detachably connected, and the connecting hole is opened at the end of the transverse end of the connecting rod.

[0011] As a further improvement measure of the present invention, a groove is provided in the above-mentioned "U"-shaped connecting block, and a hinge hole 1 is provided on both sides of the groove, and a hinge hole 2 is provided on the rocker. A pin shaft is provided between the hinge hole 1 and the hinge hole 2, and the end portion of the rocker hinged to the connecting block is set to an arc shape.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention utilizes the movable cooperation between the rocker and the connecting rod. In the process of the output end of the driving member driving the connecting block to move up and down in the longitudinal direction, the rocker is rotated around the pin shaft, thereby driving the clamping rod to automatically extend into the end of the workpiece to clamp and fix the workpiece, preventing the workpiece from shaking, shifting, etc. during cutting, punching and other processing, thereby ensuring processing accuracy; 2. The present invention has a simple structure, and the longitudinal movement of the clamping rod and the automatic clamping and loosening of the workpiece can be achieved by using one driving member, avoiding manual operation and saving time and effort; 3. Compared with manual operation, the present invention utilizes the drive of the driving member, and the clamping effect is more stable, and the clamping rod will not fall off due to the shaking of the workpiece during processing, thereby ensuring the processing progress of the workpiece and helping to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view of the present invention.

[0014] Figure 2 It is the front view of the present invention.

[0015] Figure 3 It is a top view of the present invention.

[0016] Figure 4 It is an enlarged stereoscopic view of the clamping mechanism in the present invention.

[0017] Figure 5 It is an enlarged structural schematic diagram of the clamping mechanism of the present invention when it is in a compressed state.

[0018] Figure 6 It is an enlarged structural schematic diagram of the clamping mechanism of the present invention when it is in a released state.

[0019] Figure 7 It is a schematic diagram of the enlarged structure of the rocker in the present invention.

[0020] Explanation of the accompanying numbers: 1-base, 2-positioning fixture, 3-mounting groove, 4-clamping mechanism, 5-clamping rod, 6-driving member, 7-output end, 8-through hole, 9-connecting block, 10-rocker, 11-connecting rod, 12-connecting hole 2, 13-connecting rod, 14-support block, 15-groove, 16-pin shaft, 17-workpiece. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] On the contrary, the present invention covers any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention as defined by the claims. Furthermore, to facilitate a better understanding of the present invention, certain specific details are described in detail below in the detailed description of the present invention. Those skilled in the art will be able to fully understand the present invention without these details.

[0024] like Figures 1 to 3 The multi-axis engraving machine automatic fixture shown includes a base 1, a positioning fixture 2 is provided on the base 1, and a mounting groove 3 is provided on the upper surface of the positioning fixture 2 which is adapted to the outer surface of the workpiece 17. The workpiece 17 to be processed is placed in the mounting groove 3. In this embodiment, in order to improve work efficiency, a plurality of positioning fixtures 2 arranged in sequence can be provided on the base 1 to realize simultaneous processing of multiple workpieces 17, thereby saving production and processing time.

[0025] like Figures 1 to 7 As shown, in order to prevent the workpiece 17 from shaking or moving during the processing, which may affect the processing accuracy of the workpiece 17, the base 1 is further provided with a clamping mechanism 4 corresponding to the two ends of the workpiece 17, respectively clamping and fixing the two ends of the workpiece 17. The clamping mechanism 4 includes a clamping rod 5 and a driving member 6 for driving the clamping rod 5 to move in the longitudinal direction. The driving member 6 is configured as a cylinder. The clamping rod 5 is arranged in the horizontal direction and is opposite to the end of the workpiece 17. The driving member 6 is provided on the base 1 through a mounting plate. In order to achieve a reasonable layout of the spatial structure, the driving member 6 can be installed on the lower surface of the base 1. The driving member 6 is provided with an output end 7. The base 1 is provided with a through hole 8 for the output end 7 to pass through. The driving member 6 drives the output end 7 to drive the clamping rod 5 to move in the longitudinal direction, so that the clamping rod 5 is opposite to the workpiece 17.

[0026] like Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, in order to automatically realize the clamping and fixing effect of the clamping rod 5 on the end of the workpiece 17 and reduce manual operation, the clamping mechanism 4 also includes a clamping component for realizing that the clamping rod 5 presses the end of the workpiece 17 during the longitudinal movement. The clamping component includes a rocker 10 and a connecting rod 11 arranged on the upper surface of the driving member 6 along the longitudinal direction, and the clamping rod 5 is arranged on the rocker 10.

[0027] A "U"-shaped connecting block 9 is provided at the end of the output end 7, and a groove 15 is provided in the "U"-shaped connecting block 9. A hinge hole 1 is provided on both sides of the groove 15, and a hinge hole 2 is provided on the rocker 10. A pin 16 is provided between the hinge hole 1 and the hinge hole 2. One end of the rocker 10 is hinged to the connecting block 9 through the pin 16. Since the bottom of the groove 15 is a plane, in order to facilitate the rocker 10 to rotate relative to the connecting block 9 around the hinge point, the end of the rocker 10 hinged to the connecting block 9 is set to an arc shape, and a gap is provided between the end of the rocker 10 and the bottom of the groove 15 to prevent the rocker 10 from contacting the bottom of the groove 15 during rotation.

[0028] like Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, the number of connecting rods 11 is set to two, which are respectively arranged on both sides of the rocker 10. The two connecting rods 11 are respectively provided with a connecting hole one at one end away from the driving member 6, and the rocker 10 is provided with a connecting hole two 12 corresponding to the connecting hole one. Connecting rods 13 are inserted into the connecting hole one and the connecting hole two 12. The two ends of the connecting rod 13 are respectively connected to the two connecting rods 11, and the end of the connecting rod 11 away from the driving member 6 and the end of the rocker 10 away from the connecting block 9 are movably connected through the connecting rod 13.

[0029] like Figures 4 to 6 As shown, in order to facilitate the connection between the connecting rod 11 and the rocker 10, the connecting rod 11 is set to an inverted "L" shape, one longitudinal end of the connecting rod 11 is parallel to the output end 7, and a support block 14 is provided between the end of the longitudinal end of the connecting rod 11 and the driving member 6. The connecting rod 11 and the support block 14 are detachably connected, and a connecting hole is opened at the end of the transverse end of the connecting rod 11, and the transverse end of the connecting rod 11 and the longitudinal end of the connecting rod 11 are connected in an arc shape.

[0030] In this embodiment, if Figures 4 to 6 As shown, the connection hole is set to be circular, as shown in FIG. Figure 7 As shown, the second connecting hole 12 is set as an arc-shaped long strip hole. Since the connecting rod 11 is set on the driving member along the longitudinal direction and is fixed, and the connecting hole 1 on the connecting rod 11 is movably connected to the connecting hole 2 12 on the rocker 10 through the connecting rod 13, therefore, in the process of the output end 7 of the driving member 6 driving the connecting block 9 to drive the rocker 10 to move along the longitudinal direction, according to the different horizontal heights of the rocker 10, the connecting rod 13 will be located at different positions in the arc-shaped long strip connecting hole 2 12, so that the angle and direction of rotation of the rocker 10 around the hinge point are restricted by the connecting rod 13, and the rotation angle of the rocker can be controlled by controlling the curvature and length of the connecting hole 2 12.

[0031] like Figures 1 to 3As shown, in this embodiment, the workpiece 17 is placed in the mounting groove 3 of the positioning fixture 2 along the horizontal direction. Figures 4 to 6 As shown, in order to realize the clamping and loosening function of the clamping rod on the workpiece 17, the connecting hole 2 12 is arranged in the longitudinal direction at one end away from the connecting block 9, and the connecting hole 2 12 is inclined toward the workpiece 17 at one end close to the connecting block 9. The clamping rod 5 is arranged on the side surface of the rocker 10 away from the end of the connecting block 9, and one end of the clamping rod 5 is facing the workpiece 17, and the other end of the clamping rod 5 is opposite to the end of the connecting hole 2 12 arranged in the longitudinal direction, and the clamping rod 5 is perpendicular to the end of the connecting hole 2 12 arranged in the longitudinal direction.

[0032] like Figure 6 As shown, when the output end 7 of the driving member 6 drives the connecting block 9 to move upward in the longitudinal direction, due to the upward movement of the rocker 10, the connecting rod 13 is located at the end of the connecting hole 2 12 close to the connecting block 9. Since the end of the connecting hole 2 12 close to the connecting block 9 is inclined toward the workpiece 17, the rocker 10 will rotate around the hinge point, driving the clamping rod 5 to tilt toward the side away from the workpiece 17. The inclination angle is the same as the inclination angle of the end of the connecting hole 2 12 close to the connecting block 9 toward the workpiece 17; Figure 5 As shown, when the output end 7 of the driving member 6 drives the connecting block 9 to move downward in the longitudinal direction, due to the downward movement of the rocker 10, the connecting rod 13 gradually moves from the end of the connecting hole 2 12 close to the connecting block 9 to the end of the connecting hole 2 12 away from the connecting block 9. Since the end of the connecting hole 2 12 away from the connecting block 9 is arranged in the longitudinal direction, the rocker 10 at this time rotates around the hinge point to the vertical direction. During the rotation of the rocker 10, the clamping rod 5 extends into the interior of the workpiece and is finally arranged horizontally on the inner wall of one end of the workpiece 17. As the driving member 6 is driven downward in the longitudinal direction, the clamping rod 5 has the effect of pressing and clamping the workpiece 17. During the up and down movement of the driving member 6 in the longitudinal direction, the rocker arm 10 rotates around the pin shaft 16, and the angle of rotation is limited by the cooperation between the connecting rod 13 and the second connecting hole 12, so that the clamping rod 5 automatically extends into the end of the workpiece 17 during the longitudinal movement to clamp and fix the workpiece 17, preventing the workpiece 17 from shaking or shifting during the cutting, punching and other processing processes, ensuring the processing accuracy, and avoiding manual operation, saving time and effort.

[0033] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. A person skilled in the art may make several modifications and improvements without departing from the present invention, and these should also be considered to fall within the scope of protection of the present invention.

Claims

1. An automatic fixture for a multi-axis precision engraving machine, comprising a base (1), a positioning fixture (2) being provided on the base (1), a mounting groove (3) being provided on the upper surface of the positioning fixture (2) and being adapted to the outer surface of a workpiece (17), wherein: The base (1) is also provided with a clamping mechanism (4) corresponding to the two ends of the workpiece (17), the clamping mechanism (4) comprising a clamping rod (5), a driving member (6) for driving the clamping rod (5) to move in the longitudinal direction, and a pressing member for realizing that the clamping rod (5) presses the ends of the workpiece (17) during the longitudinal movement. The driving member (6) is provided on the base (1) through a mounting plate. The driving member (6) is provided with an output end (7). The base (1) is provided with a clamping member for the workpiece (17). The output end (7) passes through the through hole (8), the end of the output end (7) is provided with a "U"-shaped connecting block (9), the pressing component includes a rocker (10) with one end hinged to the connecting block (9), the clamping rod (5) is provided at the other end of the rocker (10), and the clamping rod (5) faces the workpiece (17), and the pressing component also includes a connecting rod (11) provided on the upper surface of the driving member (6) in the longitudinal direction, and the end of the connecting rod (11) away from the driving member (6) is connected to the rocker (10) The end away from the connecting block (9) is movably connected, the number of the connecting rods (11) is set to two, and they are respectively set on both sides of the rocking arm (10), and the ends of the two connecting rods (11) away from the driving member (6) are respectively provided with a connecting hole 1, and the connecting hole 1 is set to be circular, and the rocking arm (10) is provided with a connecting hole 2 (12) corresponding to the connecting hole 1, and the connecting hole 2 (12) is set to be an arc-shaped long hole, and a connecting rod (13) is inserted into the connecting hole 1 and the connecting hole 2 (12), and the connecting rod The two ends of (13) are respectively connected to the two connecting rods (11), the end of the second connecting hole (12) away from the connecting block (9) is arranged in the longitudinal direction, the end of the second connecting hole (12) close to the connecting block (9) is inclined toward the workpiece (17), one end of the clamping rod (5) is directed toward the workpiece (17), the other end of the clamping rod (5) is opposite to the end of the second connecting hole (12) arranged in the longitudinal direction, and the clamping rod (5) is perpendicular to the end of the second connecting hole (12) arranged in the longitudinal direction.

2. The automatic fixture for a multi-axis engraving machine according to claim 1, characterized in that: The connecting rod (11) is configured to be in an inverted "L" shape, one longitudinal end of the connecting rod (11) is parallel to the output end (7), and a support block (14) is provided between the end of the longitudinal end of the connecting rod (11) and the driving member (6), the connecting rod (11) and the support block (14) are detachably connected, and the connecting hole is opened at the end of one transverse end of the connecting rod (11).

3. The automatic fixture of the multi-axis engraving machine according to claim 1 is characterized in that: A groove (15) is provided in the U-shaped connecting block (9), and hinge holes (1) are provided on both sides of the groove (15). A hinge hole (2) is provided on the rocker (10), and a pin (16) is provided between the hinge hole (1) and the hinge hole (2). One end of the rocker (10) hinged to the connecting block (9) is arranged in an arc shape.

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