CN110181981B

CN110181981B - A carving machine

Info

Publication number: CN110181981B
Application number: CN201910345144.3A
Authority: CN
Inventors: 吴善旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2025-02-25
Anticipated expiration: 2039-04-26
Also published as: CN110181981A

Abstract

The present invention provides an engraving machine, which belongs to the technical field of mechanical processing equipment. It solves the problem that the processing components of the existing engraving machine have low stability and processing accuracy under a large moving stroke. The engraving machine includes a frame, a crossbeam horizontally arranged on the frame, and a processing component with at least one cutter head. A guide sleeve is slidably arranged on the crossbeam in the horizontal direction, a guide column is penetrated in the guide sleeve in the vertical direction, a guide rail is fixed on the guide column in the length direction, a guide block is fixed on the guide sleeve, the guide rail and the guide block are slidably matched, and the processing component is arranged at the lower end of the guide column. The processing component of the engraving machine has high stability and processing accuracy under a large moving stroke.

Description

Engraving machine

Technical Field

The invention belongs to the technical field of machining equipment, and relates to an engraving machine.

Background

The engraving is combined processing of drilling and milling in principle, has wide application range, and comprises a woodworking engraving machine, a laser engraving machine, an advertisement engraving machine, a jade engraving machine, a stone engraving machine, a cylinder engraving machine and the like, and the engraving machine has wide application range and even replaces a manual engraving technology, thereby laying a foundation for mass rapid production of products. The engraving machine needs the cutter head to move and swing in different directions when engraving the workpiece so as to realize three-dimensional machining of the workpiece, the longitudinal adjustment is usually realized through the movement of the cross beam or the workpiece, the transverse adjustment is realized through the movement of the cross carriage, the height adjustment is realized through the movement of the vertical carriage or the workpiece, the supporting of the cross beam can be obtained in the movement process of the cross carriage, but the supporting of the cross beam can not be obtained after the movement stroke of the vertical carriage is larger, so that the machining assembly is unstable, the machining precision is low, the movement stroke of the vertical carriage is usually smaller, and in order to comprehensively machine the workpiece with higher height, the vertical movement of the workpiece or the vertical movement of the cross beam is realized by a person skilled in the art, so that the carriage connected with the machining assembly always leans against the cross beam, and the cross beam is obtained so as to solve the problems of small vertical movement stroke or low machining precision of the machining assembly.

The machine tool frame of the engraving machine comprises two groups of parallel supporting plates, a cross beam is arranged above the two groups of supporting plates, the cross beam is in sliding fit with the two groups of supporting plates, an engraving device is arranged on the cross beam, the engraving device is in sliding fit with the cross beam, a lifting device for lifting a car body is further arranged below the engraving device, the lifting device consists of a quick lifting structure and a fine tuning structure, the car body is lifted up by the quick lifting structure until wheels are suspended after the car body is in place, and the fine tuning structure adjusts the height of the car body until a table top is in a horizontal state, namely, the height position of a workpiece is adjusted through the lifting device so as to be matched with the machining of a machining assembly. As another example, an engraving machine disclosed in chinese patent application No. (201720765693.2) is provided with a first sliding block on a first sliding rail, the top of the first sliding block is connected with a lifting rod, one side of the lifting rod is provided with a first driving motor, the top of the lifting rod is provided with a transverse plate, one side of the transverse plate is provided with a second sliding rail, the second sliding rail is connected with a second sliding block, one side of the second sliding block is connected with a mounting box, one side of the mounting box is provided with a second driving motor, the other side of the mounting box is provided with a through hole, a connecting rod is arranged in the through hole, one end of the connecting rod is provided with a fixed ring, a tool bit is arranged in the fixed ring, namely, the vertical movement stroke of the tool bit is increased through the vertical movement of the transverse plate, however, the weight of the tool bit is large, the manner of vertically moving the workpiece or the transverse plate is laborious, and moving heavy objects also causes low movement precision, and further influences the processing precision.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides an engraving machine which is used for solving the problems of lower stability and lower machining precision of a machining component of the prior engraving machine under a larger moving stroke.

The engraving machine comprises a machine frame, a cross beam horizontally arranged on the machine frame and a machining assembly with at least one tool bit, and is characterized in that a guide sleeve is arranged on the cross beam in a sliding mode along the horizontal direction, a guide post is arranged in the guide sleeve in a penetrating mode along the vertical direction, a guide rail is fixed on the guide post along the length direction, a guide block is fixed on the guide sleeve, the guide rail is in sliding fit with the guide block, and the machining assembly is arranged at the lower end of the guide post.

The beam moves along the horizontal direction, the guide post moves vertically, and the height position of the machining assembly is adjusted, so that the machining assembly performs three-dimensional machining on a workpiece, the machining assembly is positioned at the lower end of the guide post, the guide post has a certain length, the machining assembly has a larger stroke in the vertical direction, and the machining assembly can receive a larger reaction force in the machining process.

In the engraving machine, the cross beam is arranged on the frame in a sliding manner along the longitudinal direction. The longitudinal position of the cutter head is adjusted by the longitudinal movement of the cross beam.

In the engraving machine, the cross sections of the guide sleeve and the guide post are rectangular, and at least two inner side surfaces of the guide sleeve and at least two outer side surfaces of the guide post are respectively in sliding fit with the guide block through the guide rail. The guide fit between the guide post and the guide sleeve through the guide fit between a plurality of faces enables the guide post to be positioned sufficiently so as to ensure stability, and the guide piece can be used for transmitting the positioning force of the guide sleeve to the guide post and enabling the guide post to move more smoothly and to be higher in precision.

In the engraving machine, the guide sleeve comprises a transverse carriage, two side plates and an end plate, wherein the transverse carriage is connected to the cross beam in a sliding manner along the transverse direction, the two side plates are vertically fixed to the transverse carriage, the end plate is fixed to the two side plates, the transverse carriage, the two side plates and the end plate enclose the guide sleeve, and the guide column is of a hollow structure. The transverse carriage is used as a component part of the guide sleeve, so that the framework is simplified, the weight of the guide sleeve is reduced, the weight of the guide post can be reduced by adopting a hollow structure, the moving precision and the processing precision are further improved, the transverse carriage can be arranged on the transverse beam in a sliding manner, and the guide sleeve adopts an integral structure and is fixed on the transverse carriage.

In the engraving machine, the guide blocks are fixed on the inner side surfaces of the two side plates, the guide rails are fixed on the side surfaces of the two sides of the guide post, and the guide rails on the two sides of the guide post are respectively connected with the guide blocks on the two side plates in a sliding manner. The guide blocks at two sides are matched with the guide rail, so that the guide column is transversely positioned to bear transverse stress in the processing process, and stability and processing precision are ensured.

In the engraving machine, the guide block is fixed on the inner side surface of the end plate, the guide rail is fixed on the front side surface of the guide post, and the guide rail on the front side of the guide post is in sliding fit with the guide block on the end plate. The guide block at the front side is matched with the guide rail, so that the guide column is positioned in the front-rear direction to bear the stress in the front-rear direction in the processing process, and the stability and the processing precision are ensured.

In the engraving machine, the front side surface of the transverse carriage is horizontally fixed with a plurality of support plates which are vertically arranged, the edges of the two sides of the support plates are respectively propped against and fixed with the inner side surfaces of the two side plates, and the outer side surfaces of the two side plates are provided with a plurality of reinforcing ribs. In the processing assembly processing process, the uide bushing can receive great reaction force, supports the inboard of uide bushing through the backup pad, processes the outside of wire cover through the strengthening rib to improve the mechanism intensity of uide bushing, and then guarantee holistic stability.

In the engraving machine, the frame comprises a rectangular frame-shaped underframe and two supporting beams fixed on the underframe through a plurality of upright posts, two ends of the cross beams are respectively and slidably connected to the two supporting beams, and a plurality of adjusting mechanisms which support the underframe and can adjust the height of the underframe are arranged on the underframe. The supporting beam is supported and fixed through the stand, so that the cross beam has a larger height, further the cross beam is provided with a larger space below, the three-dimensional translation of the machining assembly is realized, the overall height of the frame can be adjusted through the adjusting mechanism, and the vertical movable support is suitable for workpieces with different heights, and is better in applicability due to the fact that the vertical movable support is combined with a larger vertical movable travel of the guide post.

In the engraving machine, the adjusting mechanism comprises a cylindrical supporting seat, a screw sleeve is fixed on the inner peripheral surface of the supporting seat, a screw rod is connected to the underframe in a rotating mode, the screw rod is arranged vertically, the lower end of the screw rod is connected in the screw sleeve in a threaded mode, and an adjusting motor capable of driving a plurality of screw rods to rotate synchronously is arranged on the rack. The adjusting motor drives the screws to synchronously rotate, the adjusting motor and the screw random frame are lifted together under the support of the supporting seat, and the screws and the threaded sleeves can be self-locked after being adjusted in place, so that the height of the rack is locked.

In the engraving machine, the four corners of the underframe are respectively provided with the screw rods, the two transverse sides of the underframe are respectively rotationally connected with the transmission rods, the transmission rods are arranged in the front-rear direction, the two ends of each transmission rod are respectively fixed with the worm, the upper ends of the screw rods are respectively fixed with worm wheels, the worm wheels at the two ends of each transmission rod are respectively meshed with the worm wheels on the two screw rods at the same side, the rear ends of the transmission rods are respectively fixed with belt wheels, the two belt wheels are sleeved with the transmission belts, and the motor shaft of the adjusting motor is connected with one transmission rod. The regulating motor drives one of the transmission rods to rotate, the transmission rod drives the other transmission rod to synchronously rotate through the cooperation of the transmission belt and the belt wheel, and the two transmission rods drive the four screws to synchronously rotate through the cooperation of the worm wheel and the worm, so that the synchronous rotation of the four screws is better, and the stability of the frame is further ensured.

In the engraving machine, the mounting plates are fixed at four corners of the underframe, the screws are rotationally connected to the mounting plates, sliding sleeves are vertically fixed on the lower side surfaces of the mounting plates, the sliding sleeves are sleeved on the supporting seats, and the sliding sleeves are in sliding fit with the supporting seats. The sliding sleeve is in sliding fit with the supporting seat, so that a guiding effect is achieved, and the supporting seat is connected with the frame more stably.

In the engraving machine, the adjusting mechanism comprises a plurality of oil cylinders, wherein the oil cylinders are vertically arranged, and piston rods of the oil cylinders are vertically upwards and fixedly connected with the bottom of the underframe. The height of the frame is adjusted by synchronously stretching piston rods of the oil cylinders.

In the engraving machine, a vertical driving piece capable of driving the guide post to lift up and down is further arranged between the guide sleeve and the guide post, and the vertical driving piece comprises a screw rod nut mechanism, a gear rack mechanism or an air cylinder. The vertical driving piece drives the guide post to lift so as to realize the adjustment of the height position of the processing assembly.

In the engraving machine, the vertical driving piece is a screw-nut mechanism, the screw-nut mechanism comprises a vertical nut fixed on the inner side surface of the guide sleeve, a vertical screw rod is connected to the rear side surface of the guide post in a vertical rotating mode, the vertical screw rod is in threaded connection with the vertical nut, a vertical motor is fixed to the top end of the guide post, and the vertical motor is connected with the vertical screw rod. Because the guide post obtains the location of uide bushing, stability is higher, consequently the vertical motor of as power take off source is directly fixed in the upper end of guide post, and it goes up and down along with the guide post with vertical lead screw together, and then guarantees stability.

In the engraving machine, the lower end of the guide post is rotationally connected with the rotating seat, the rotating shaft line of the rotating seat is vertically arranged, the processing assembly comprises a processing motor, the processing motor is rotationally connected to the rotating seat, the rotating shaft line of the processing motor is horizontally arranged, and the cutter head is arranged on the processing motor. The adjustment of tool bit horizontal orientation is realized through rotating the seat, through the rotation of processing motor self, realizes the regulation of tool bit vertical direction, carries out three-dimensional processing to the work piece.

In the engraving machine, the two supporting beams are arranged along the front-back direction, the two supporting beams are respectively fixed with a longitudinal sliding rail along the front-back direction, the two ends of the cross beam are respectively and slidably connected with the longitudinal sliding rails on the two supporting beams, the cross beam is transversely fixed with a transverse sliding rail, and the guide sleeve is slidably connected with the transverse sliding rail. The longitudinal movement of the cross beam realizes the longitudinal position adjustment of the tool bit, the transverse movement of the cross carriage realizes the transverse position adjustment of the tool bit, the vertical movement of the guide post realizes the height position adjustment of the tool bit, and the rotation of the rotating seat and the processing motor is combined, so that the five-dimensional movement of the tool bit is realized.

Compared with the prior art, the engraving machine has the following advantages:

1. Because the guide sleeve is adopted to hold the guide post tightly, the guide post is positioned by the guide sleeve in any horizontal direction, so that the stroke of the processing assembly is larger, and the enough stability and the processing precision can be still kept when the distance from the guide sleeve is longer.

2. Because the guide sleeve is combined by the guide blocks at different positions, the guide column is positioned in different directions, and the stability and the precision of the processing assembly during processing are further ensured.

3. The chassis is also provided with the plurality of adjusting mechanisms which are used for supporting the chassis and adjusting the height of the chassis, and the overall height of the chassis can be adjusted through the adjusting mechanisms, so that the chassis is applicable to workpieces with different heights, and the applicability is better due to the combination of the larger vertical moving stroke of the guide post.

Drawings

Fig. 1 is a schematic perspective view of an engraving machine.

Fig. 2 is a structural top view of the engraving machine.

Fig. 3 is a cross-sectional view of the structure at A-A in fig. 2.

Fig. 4 is an enlarged view of the structure at B in fig. 1.

Fig. 5 is an enlarged view of the structure at C in fig. 2.

Fig. 6 is an enlarged view of the structure at D in fig. 3.

Fig. 7 is a partial structural cross-sectional view at E-E in fig. 2.

Fig. 8 is an enlarged view of the structure at F in fig. 1.

Fig. 9 is a partial structural cross-sectional view at G-G in fig. 2.

Fig. 10 is a schematic perspective view of an engraving machine according to a second embodiment.

In the figure, 1, a frame, 11, a bottom frame, 111, a mounting plate, 12, a stand column, 13, a supporting beam, 131, a longitudinal sliding rail, 2, a cross beam, 21, a transverse sliding rail, 22, a support, 221, a longitudinal sliding block, 3, a guide sleeve, 31, a transverse carriage, 311, a vertical nut, 312, a transverse sliding block, 32, a side plate, 33, an end plate, 34, a supporting plate, 35, a reinforcing rib, 36, a guide block, 4, a guide post, 41, a guide rail, 42, a vertical screw rod, 43, a vertical motor, 44, a rotating seat, 45, a horizontal steering motor, 46, a vertical steering motor, 5, a processing assembly, 51, a processing motor, 52, a tool bit, 6, an adjusting mechanism, 61, a supporting seat, 62, a screw sleeve, 63, a screw rod, 631, a worm gear, 64, a transmission rod, 641, a worm, 642, a belt pulley, 643, a transmission belt, 65, an adjusting motor, 66, a sliding sleeve, 67 and an oil cylinder.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Embodiment one:

As shown in fig. 1, an engraving machine comprises a frame 1, a cross beam 2, a guide sleeve 3, a guide post 4 and a processing assembly 5, wherein the frame 1 comprises a bottom frame 11 and two support beams 13, the bottom frame 11 is in a rectangular frame shape, a plurality of upright posts 12 are vertically fixed on the bottom frame 11, the two support beams 13 are fixed at the top ends of the upright posts 12, the two support beams 13 are horizontally arranged along the longitudinal direction, the two support beams 13 are consistent in height, a space for placing a workpiece is reserved between the two support beams 13, a pair of longitudinal sliding rails 131 are longitudinally fixed on the upper side surfaces of the two support beams 13, a downward support 22 is arranged at the two ends of the cross beam 2, longitudinal sliding blocks 221 are fixedly arranged at the bottoms of the support 22, and the two support beams 22 are respectively connected to the longitudinal sliding rails 131 of the two support beams 13 through the longitudinal sliding blocks 221 in a sliding manner. The crossbeam 2 is horizontally arranged along the transverse direction, a pair of transverse sliding rails 21 are transversely fixed on the front side surface of the crossbeam 2, a transverse sliding block 312 is fixed on the guide sleeve 3, the transverse sliding block 312 is slidably connected to the transverse sliding rails 21, the central line of the guide sleeve 3 is vertically arranged, the guide column 4 vertically penetrates through the guide sleeve 3, the guide column 4 is slidably matched with the guide sleeve 3, the lower end of the guide column 4 is rotationally connected with a rotating seat 44, the rotating axis of the rotating seat 44 is vertically arranged, the machining assembly 5 comprises a machining motor 51 and a cutter head 52, the machining motor 51 is rotationally connected to the rotating seat 44, the rotating axis of the machining motor 51 is horizontally arranged, the cutter head 52 is mounted on the machining motor 51, the crossbeam 2 and the guide sleeve 3 are respectively driven in a matched mode through respective motors and screw nuts, a horizontal steering motor 45 is fixed inside the lower end of the guide column 4, the horizontal steering motor 45 drives the rotating seat 44 to rotate through a speed reducer, a vertical steering motor 46 is fixed on the rotating seat 44, and the vertical steering motor 46 drives the machining motor 51 to swing through a belt pulley transmission mode, a gear transmission mode and the like.

Specifically, as shown in fig. 4 and 5, the cross section of the guide sleeve 3 is rectangular, and includes a cross carriage 31, two side plates 32 and an end plate 33, the cross slider 312 is fixed on the rear side of the cross carriage 31, the two side plates 32 are vertically fixed on the front side of the cross carriage 31, the end plate 33 is fixed on the front side edges of the two side plates 32, that is, the cross carriage 31, the two side plates 32 and the end part enclose the guide sleeve 3, and three support plates 34 are horizontally fixed on the front side of the cross carriage 31, and the three support plates 34 are vertically arranged. The support plate 34 has two side edges respectively abutting against and fixed to the inner side surfaces of the two side plates 32, so as to support the two side plates 32, and a plurality of reinforcing ribs 35 vertically arranged are further provided on the outer side surfaces of the two side plates 32, and the length direction of the reinforcing ribs 35 is set in the front-rear direction. Referring to fig. 6 and 7, the guide post 4 is in a hollow structure, guide rails 41 are fixed on lateral sides of the guide post 4, the guide rails 41 are arranged along a vertical direction, two ends of the guide rails 41 extend to two ends of the guide post 4 respectively, three guide blocks 36 are fixed on inner sides of two side plates 32, the three guide blocks 36 on the same side plate 32 are vertically arranged, the guide rails 41 on two sides of the guide post 4 are respectively in sliding fit with the guide blocks 36 on the two side plates 32, two guide rails 41 are fixed on a front side of the guide post 4, the two guide rails 41 are arranged along the vertical direction, two ends of the guide rails 41 extend to two ends of the guide post 4 respectively, two guide blocks 36 are fixed on an inner side of the end plate 33, and the two guide rails 41 on a front side of the guide post 4 are respectively in sliding fit with the two guide blocks 36 on the end plate 33. A screw-nut mechanism is further arranged between the guide sleeve 3 and the guide post 4, the screw-nut mechanism comprises a vertical nut 311 fixed on the inner side surface of the guide sleeve 3, a vertical screw rod 42 is connected to the rear side surface of the guide post 4 in a vertical rotation mode, the vertical screw rod 42 is in threaded connection with the vertical nut 311, a vertical motor 43 is fixed to the top end of the guide post 4, and the vertical motor 43 is connected with the vertical screw rod 42.

As shown in fig. 8 and 9, the four corners of the chassis 11 are respectively provided with an adjusting mechanism 6 capable of adjusting the height of the chassis 11, specifically, the adjusting mechanism 6 comprises a cylindrical supporting seat 61, the four corners of the chassis 11 are respectively and horizontally fixed with a mounting plate 111, a sliding sleeve 66 is vertically fixed on the lower side surface of the mounting plate 111, the sliding sleeve 66 is sleeved on the supporting seat 61, the sliding sleeve 66 is in sliding fit with the supporting seat 61, a threaded sleeve 62 is fixed on the inner peripheral surface of the supporting seat 61, a screw 63 is rotationally connected to the mounting plate 111, the screw 63 is vertically arranged, the lower end of the screw 63 extends into the supporting seat 61 and is in threaded connection with the threaded sleeve 62, the upper end of the screw 63 is fixedly provided with a worm wheel 631, both lateral sides of the chassis 11 are rotationally connected with a transmission rod 64, the transmission rod 64 is arranged in the front-rear direction, both ends of the transmission rod 64 are respectively meshed with the worm 641, the rear ends of the two transmission rods 64 are respectively fixed with a belt wheel 642, the two belt wheels 642 are sleeved with a transmission belt 643, a motor shaft 111 is fixedly connected to the motor shaft 65, and one of the adjustment rod 64 is fixedly connected to the motor shaft 65.

Embodiment two:

The structure of the engraving machine is basically the same as that of the first embodiment, except that as shown in fig. 10, the adjusting mechanism 6 includes four cylinders 67, the four cylinders 67 are vertically disposed, the four cylinders 67 are respectively located at four corners of the chassis 11, and piston rods of the cylinders 67 face and are fixedly connected with the mounting plate 111.

Embodiment III:

The structure of the engraving machine is basically the same as that of the first embodiment, and the engraving machine is different in that the frame 1 comprises two upright posts which are transversely arranged, two ends of the cross beam 2 are respectively fixed at the top ends of the two upright posts, a base is arranged between the two upright posts, the base is positioned below the cross beam 2, a longitudinal sliding rail 131 is longitudinally fixed on the base, a processing platform is slidably connected on the longitudinal sliding rail 131 and is horizontally arranged for positioning a workpiece, the processing platform is driven by a screw-nut assembly or a gear-rack assembly and drives the workpiece to longitudinally move, and simultaneously, the transverse movement of the guide sleeve 3 and the vertical movement of the guide post 4 are combined, so that the three-dimensional translation of the cutter head 52 relative to the workpiece is realized.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the chassis 1, the chassis 11, the mounting plate 111, etc. are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the invention and should be construed in a manner consistent with their spirit and scope.

Claims

1. An engraving machine, comprising a frame (1), a crossbeam (2) horizontally arranged on the frame (1), and a processing assembly (5) having at least one cutter head (52), characterized in that a guide sleeve (3) is slidably arranged on the crossbeam (2) in a horizontal direction, a guide column (4) is penetrated in the guide sleeve (3) in a vertical direction, a guide rail (41) is fixed on the guide column (4) in a length direction, a guide block (36) is fixed on the guide sleeve (3), the guide rail (41) and the guide block (36) are slidably matched, and the processing assembly (5) is arranged at the lower end of the guide column (4); the guide sleeve (3) comprises a transverse slide plate (31), two side plates (32) and an end plate (33), the transverse slide plate (31) is slidably connected to the crossbeam (2) in a transverse direction, and the two side plates (32) and the end plate (33) are connected to the crossbeam (2) in a transverse direction. The side plates (32) are vertically fixed on the transverse drag plate (31), the end plate (33) is fixed on the two side plates (32), and the transverse drag plate (31), the two side plates (32) and the end plate (33) surround the guide sleeve (3), the guide blocks (36) are fixed on the inner side surfaces of the two side plates (32), the guide rails (41) are fixed on the two side sides of the guide column (4), and the guide rails (41) on both sides of the guide column (4) are respectively slidably connected to the guide blocks (36) on the two side plates (32), the guide blocks (36) are fixed on the inner side surfaces of the end plates (33), the guide rails (41) are fixed on the front side surfaces of the guide column (4), and the guide rails (41) on the front side of the guide column (4) are slidably matched with the guide blocks (36) on the end plates (33).

2. The engraving machine according to claim 1, characterized in that the crossbeam (2) is slidably arranged on the frame (1) along the longitudinal direction.

3. The engraving machine according to claim 1 is characterized in that a plurality of support plates (34) are horizontally fixed on the front side of the transverse drag plate (31), and the plurality of support plates (34) are arranged vertically, and the two side edges of the support plates (34) are respectively abutted and fixed against the inner side surfaces of the two side plates (32), and the outer side surfaces of the two side plates (32) are provided with a plurality of reinforcing ribs (35).

4. The engraving machine according to claim 1 or 2 is characterized in that the frame (1) includes a rectangular frame-shaped base frame (11) and two support beams (13) fixed to the base frame (11) through a plurality of columns (12), the two ends of the cross beam (2) are respectively slidably connected to the two support beams (13), and the base frame (11) is provided with a plurality of adjustment mechanisms (6) for supporting the base frame (11) and being able to adjust the height of the base frame (11).

5. The engraving machine according to claim 4 is characterized in that the adjustment mechanism (6) comprises a cylindrical support seat (61), a screw sleeve (62) is fixed on the inner circumference of the support seat (61), a screw rod (63) is rotatably connected to the base frame (11), and the screw rod (63) is vertically arranged, and the lower end of the screw rod (63) is screwed into the screw sleeve (62), and the frame (1) is provided with an adjustment motor (65) capable of driving a plurality of screw rods (63) to rotate synchronously.

6. The engraving machine according to claim 5 is characterized in that the screw rods (63) are provided at the four corners of the base frame (11), the two lateral sides of the base frame (11) are rotatably connected with transmission rods (64), and the transmission rods (64) are arranged along the front-back direction, worms (641) are fixed at both ends of the transmission rod (64), worm wheels (631) are fixed at the upper ends of the screw rods (63), and the worms (641) at both ends of the transmission rod (64) are respectively meshed with the worm wheels (631) on the two screw rods (63) on the same side, pulleys (642) are fixed at the rear ends of the two transmission rods (64), and transmission belts (643) are sleeved on the two pulleys (642), and the motor shaft of the adjustment motor (65) is connected to one of the transmission rods (64).

7. The engraving machine according to claim 5 is characterized in that a mounting plate (111) is fixed at each of the four corners of the base frame (11), the screw rod (63) is rotatably connected to the mounting plate (111), a sliding sleeve (66) is vertically fixed on the lower side of the mounting plate (111), the sliding sleeve (66) is sleeved on the support seat (61), and the sliding sleeve (66) and the support seat (61) are slidably matched.

8. The engraving machine according to claim 4, characterized in that the adjusting mechanism (6) comprises a plurality of oil cylinders (67), the plurality of oil cylinders (67) are vertically arranged, and the piston rods of the plurality of oil cylinders (67) are vertically upward and fixedly connected to the bottom of the base frame (11).

9. The engraving machine according to claim 1 or 2, characterized in that a vertical driving member capable of driving the guide column (4) to move up and down is further provided between the guide sleeve (3) and the guide column (4), and the vertical driving member comprises a screw nut mechanism, a gear rack mechanism or a cylinder.

10. The engraving machine according to claim 9 is characterized in that the vertical driving member is a screw nut mechanism, the screw nut mechanism includes a vertical nut (311) fixed on the inner side of the guide sleeve (3), a vertical screw (42) is connected to the rear side of the guide column (4) for vertical rotation, the vertical screw (42) is threadedly connected to the vertical nut (311), a vertical motor (43) is fixed to the top of the guide column (4), and the vertical motor (43) is connected to the vertical screw (42).

11. The engraving machine according to claim 1 or 2 is characterized in that the lower end of the guide column (4) is rotatably connected to a rotating seat (44), and the rotation axis of the rotating seat (44) is arranged in the vertical direction. The processing component (5) includes a processing motor (51), which is rotatably connected to the rotating seat (44), and the rotation axis of the processing motor (51) is arranged in the horizontal direction. The tool head (52) is installed on the processing motor (51).

12. The engraving machine according to claim 4 is characterized in that the two support beams (13) are arranged along the front-to-back direction, and longitudinal slide rails (131) are fixed on the two support beams (13) along the front-to-back direction, and the two ends of the cross beam (2) are respectively slidably connected to the longitudinal slide rails (131) on the two support beams (13), and a transverse slide rail (21) is fixed on the cross beam (2) in the transverse direction, and the guide sleeve (3) is slidably connected to the transverse slide rail (21).