CN109774361B - A three-dimensional engraving machine - Google Patents

Abstract

The invention provides a three-dimensional engraving machine, and belongs to the technical field of machinery. It has solved the suitability problem of how to improve current three-dimensional engraver. The three-dimensional engraving machine comprises a base and a gantry beam capable of horizontally and longitudinally moving, wherein a supporting table is arranged below the gantry beam, a cutter frame which is in a strip shape and provided with a plurality of cutter heads is connected to the gantry beam through a translation structure, three-dimensional translation is formed by the cutter frame relative to the supporting table, a workbench which is in a strip shape is arranged on the supporting table, a plurality of groups of positioning components for positioning workpieces are arranged on the workbench, the workbench and the cutter frame are arranged in parallel, clamping pieces which are identical in number and opposite in position with the positioning components are arranged on the supporting table, the workbench can be transformed between a first position and a second position, and the positioning components are matched with the clamping pieces to clamp the workpieces when the workbench is in the second position. The three-dimensional engraving machine improves the application range of processing under the condition of ensuring the efficiency.

Description

A three-dimensional engraving machine

Technical Field

The invention belongs to the field of mechanical technology and relates to a three-dimensional engraving machine capable of processing multiple cutter heads simultaneously, in particular to a three-dimensional engraving machine with multiple cutter heads and six axes.

Background Art

There are many types of 3D engraving machines, which can be applied to wood, stone, metal, plastic and other processing and engraving. However, as the workpieces become more and more complex, various 3D engraving machines suitable for engraving and processing of some complex-shaped workpieces have also appeared one after another. In order to improve processing efficiency, the best way to improve efficiency in the field of 3D engraving machines is to use multiple tool heads to process simultaneously. Therefore, multiple tool heads are set on the tool holder to move synchronously and process synchronously.

For example, the Chinese patent application number CN201520018008.0 discloses a three-dimensional engraving machine, including a frame and an engraving platform; the engraving platform is located at the lower end of the frame, and a mobile bracket is provided on the engraving platform, and a four-jaw self-centering chuck assembly for fixing the workpiece is provided on the mobile bracket. A lifting assembly is provided at the upper end of the frame, and the lifting assembly can also be located in the middle or on both sides of the frame. An adsorption platform is provided on the mobile bracket, and the adsorption platform is adsorbed by a vacuum pump. After the product is clamped with the four-jaw self-centering chuck assembly, the position and angle of the engraving knife are adjusted by the lifting assembly, and then the position and angle of the product are adjusted by the mobile bracket before engraving.

Compared with the above-mentioned three-dimensional engraving machine models, which can only be clamped in the horizontal direction, it is difficult to engrave the grooves of the inclined groove wall with vertical clamping on this multi-head tool holder for thick and long workpieces, and it is also difficult to clamp because of the high height. Although it is more convenient to use horizontal clamping, the height of the clamping mechanism of this engraving machine model is fixed, resulting in a limited height between the tool and the clamping mechanism. Therefore, it becomes very difficult for engraving machines of similar models to process short workpieces. Due to insufficient length and angle, it is difficult to engrave the inclined concave groove surface. Therefore, this type of engraving machine is generally only suitable for the processing of thick and long workpieces, and it is more difficult to process short parts.

Summary of the invention

In view of the above problems existing in the prior art, the present invention proposes a three-dimensional engraving machine. The technical problem to be solved by the present invention is how to improve the applicability while ensuring the processing efficiency.

The present invention is realized through the following technical scheme: a three-dimensional engraving machine, comprising a base and a gantry beam connected to the base and capable of horizontal and longitudinal movement, a support platform is provided on the base below the gantry beam, a tool holder in the shape of an elongated strip and having a plurality of tool heads is connected to the gantry beam through a translation structure, the tool holder forms a three-dimensional translation relative to the support platform, and is characterized in that a workbench in the shape of an elongated strip is provided on the support platform, a plurality of positioning components for positioning the workpiece are provided on the workbench, the workbench is arranged in parallel with the tool holder, a clamping member which can be the same in number and opposite in position as the positioning components is provided on the support platform, the workbench can be transformed between a first position and a second position, and when the workbench is in the second position, the positioning component cooperates with the clamping member to clamp the workpiece.

The tool holder in this stereo engraving machine can form a three-dimensional translation relative to the support table. Since the tool holder is set on the horizontally moving gantry beam, the tool holder can translate vertically up and down relative to the gantry beam, and the support table can translate horizontally left and right. The workbench can swing back and forth or rotate with the strip direction of the workbench as the axis to change the first position and the second position. In the first position, short workpieces can be directly fixed on the workbench through the positioning assembly, and the parallel workbench and tool holder can form a sufficient angle for engraving, and when processing thick and long workpieces, the workbench can be changed to the second position, and the thick and long workpiece can be clamped in the horizontal direction with the support parts. In this way, the multi-tool head of this stereo engraving machine can be applicable to both short and thick workpieces, and has a very large range of application. It overcomes the practice that the general multi-tool head engraving machine can only place workpieces horizontally.

In the above-mentioned three-dimensional engraving machine, the tool holder can swing with the strip direction of the tool holder as the axis, and several of the tool heads are arranged at intervals on the tool holder, and the tool heads at the same place have at least two different directions. The tool heads with different directions at the same place form a group of tool head groups, which are used to engrave the same workpiece. There are several groups of these engraving tool groups and they are arranged in sequence on the tool holder. Generally, the number of engraving tool groups is determined according to the number of positioning components. The tool heads with different directions can select the required tool heads by swinging the tool holder, and the tool change and engraving are performed, which improves the efficiency. And the tool heads with different directions can use two tool heads in opposite directions, or four tool heads with a difference of 90 degrees in four directions of up, down, front and back. When one tool head is engraving, the other tool heads will not interfere with the movement and swinging of the workpiece, thereby improving the scope of application and processing efficiency.

In the above-mentioned three-dimensional engraving machine, the clamping part is a tip, and a tip frame which can be close to or away from the workbench and is in a long strip is slidably connected on the support platform. The tip is arranged on the tip frame, and a locking structure is arranged between the tip frame and the support platform to fix the tip frame after it slides. The tip frame drives all tips to move together, which can improve the clamping efficiency.

The outer end of the top is a spike structure, which can be a single conical spike or a disc-shaped structure with multiple spikes. The top is slidably connected to the top frame, and the handle or cylinder drives the outer end of the top to extend and cooperate with the above-mentioned workbench to form a support. The handle drives the top to extend outward, which can adopt a transmission structure such as a thread or a gear rack.

In the above-mentioned three-dimensional engraving machine, the clamping member includes a top seat and a top arranged on the top seat, each top seat is slidably connected to the support platform, and a locking structure is provided between each top seat and the support platform to fix the top after sliding. A single independent holding member can be used to hold workpieces of different lengths, expanding the scope of application.

In the above-mentioned three-dimensional engraving machine, the locking structure includes a fastener, a slide rail arranged along the horizontal longitudinal direction is provided on the support platform, the top rack or the top seat is slidably connected to the slide rail, and the fastener is connected to the top rack or the top seat by threading. Rotating the fastener can make the fastener rest against the slide rail.

In addition to this locking structure, the locking structure includes a latch, and the slide rail is provided with a plurality of sockets arranged in a straight line, and the top rack or the top seat is locked on the slide rail through the latch. It can also be locked by straight pulling of the threaded strip, positioning locking of the gear rack, or clamping the slide rail.

In the above-mentioned three-dimensional engraving machine, the workbench swings back and forth with the strip direction of the workbench as the axis, and the positioning component can rotate relative to the workbench. Through this structure, the three-dimensional engraving machine is upgraded to a multi-head six-axis engraving machine. After adopting this layout, the three-dimensional engraving machine can be more applicable and the engraving accuracy can be further improved.

There are two ways for the positioning component to rotate relative to the workbench: one is to provide a number of rotatable turntables on the workbench, and the positioning component is set on the turntable; the other is to provide a number of rotatable output shafts on the workbench, and the positioning component is set on the output shaft. The output shaft can be a rotating shaft rotatably connected to the workbench, or it can be the output shaft of the motor or the output shaft of the reducer. The positioning component here can be used in a variety of ways, such as clamping, top pressure, gas adsorption, or glue bonding. The positioning component can rotate to make this three-dimensional engraving machine a six-axis engraving machine with multiple tool heads, and setting the positioning component to rotate on the basis of the double swing structure can better achieve the stability and processing accuracy of the six-axis engraving machine.

In the above-mentioned three-dimensional engraving machine, the support table is provided with two support seats, the workbench is arranged between the two support seats and the two ends of the workbench are swingably connected to the support seats, and a motor 1 for driving the workbench to swing is arranged on the outer side of one of the support seats. The workbench is raised by the support seats to increase the swing range of the large workbench. The motor 1 is externally arranged to avoid swing interference with the workbench.

In the above-mentioned three-dimensional engraving machine, the workbench includes a long strip plate and connecting plates connected to both ends of the strip plate, the upper end of the connecting plate is connected to the support seat, and a power source for driving the positioning assembly to rotate is provided on the lower side of the workbench. The distance between the workbench and the tool holder is enlarged by the connecting plate, so that the applicable range of the workpiece is increased, and the connecting plate can also increase the swing range.

In the above-mentioned three-dimensional engraving machine, the power source includes a motor 2 and a reducer arranged under each positioning component, each reducer includes a horizontally arranged transmission shaft and an output shaft perpendicular to the transmission shaft, the output shaft is used to drive the positioning component to rotate, the transmission shafts of two adjacent reducers are coaxially connected in series, and the above-mentioned motor 2 is connected to the transmission shaft of the reducer located at the end.

In the above-mentioned three-dimensional engraving machine, the power source includes a motor 3 arranged under each positioning assembly, and each motor 3 is used to drive the positioning assembly to rotate. The output shaft of the motor 3 can directly drive the positioning assembly to rotate, or the motor 3 can drive the positioning assembly to rotate through the output shaft of the reducer.

Placing the power source at the bottom of the workbench avoids interference with the workpiece and ensures that the swing range between the tool holder and the workbench is not reduced. This structure can maintain the center of gravity balance when the workpiece is positioned in the positioning assembly.

As a moving mode in three-dimensional space, in the above-mentioned three-dimensional engraving machine, the gantry crossbeam is fixedly connected to a vertical guide rail, a vertical carriage is slidably connected to the vertical guide rail, the tool holder is swingably connected to the vertical carriage, and the support platform is connected to the base through a horizontal cross-guide rail so that the support platform can move horizontally. Or the gantry crossbeam is fixedly connected to a horizontal cross-guide rail, a cross carriage is slidably connected to the horizontal cross-guide rail, the vertical guide rail is arranged on the cross carriage, the vertical carriage is slidably connected to the vertical guide rail, and the tool holder is swingably connected to the vertical carriage. Or the gantry crossbeam is fixedly connected to a vertical guide rail, a vertical carriage is slidably connected to the vertical guide rail, the horizontal cross-guide rail is arranged on the vertical carriage, a cross carriage is slidably connected to the horizontal cross-guide rail, and the tool holder is swingably connected to the cross carriage.

The second type of three-dimensional engraving machine is similar to the above-mentioned three-dimensional engraving machine, which includes a base and a gantry set on the base and capable of horizontal longitudinal movement, the gantry includes two columns slidably connected to the base, and is characterized in that a vertical carriage capable of vertically moving up and down is provided on the two columns, a support platform is fixed on the base, a tool holder in the form of an elongated strip and having a plurality of tool heads is provided on the vertical carriage, the tool holder is connected to the vertical carriage through a horizontal cross guide rail so that the tool holder can move horizontally, a workbench in the form of an elongated strip is provided on the support platform, a plurality of positioning components for positioning the workpiece are provided on the workbench, the workbench is arranged parallel to the tool holder, a clamping member that can be the same in number and opposite in position as the positioning components is provided on the support platform, the workbench can be transformed between a first position and a second position, and when the workbench is in the second position, the positioning component cooperates with the clamping member to clamp the workpiece.

This three-dimensional engraving machine adopts a U-shaped gantry, and the tool holder is set on the horizontal longitudinal moving gantry and can move vertically up and down and horizontally relative to the gantry, so that the tool holder forms a three-dimensional translation relative to the support table, while the support table is fixed. The workbench can swing back and forth or rotate with the strip direction of the workbench as the axis to change the first position and the second position. In the first position, short workpieces can be directly fixed on the workbench through the positioning assembly, and the parallel workbench and tool holder can form a sufficient angle for engraving, and when processing thick and long workpieces, the workbench can be changed to the second position, and the thick and long workpieces can be clamped in the horizontal direction with the support parts. In this way, the multi-tool head of this three-dimensional engraving machine can be applicable to both short and long workpieces, and has a very large range of application. It overcomes the practice that the general multi-tool head engraving machine can only place workpieces horizontally.

The third type of three-dimensional engraving machine is similar to the above-mentioned three-dimensional engraving machine, which includes a base and a gantry set on the base and capable of horizontal longitudinal movement, the gantry includes two columns slidably connected to the base, and is characterized in that a vertical carriage capable of vertically moving up and down is provided on the two columns, a support platform capable of horizontally moving laterally is provided on the base below the gantry, a tool holder in the form of an elongated strip and having a plurality of tool heads is connected to the vertical carriage, a workbench in the form of an elongated strip is provided on the support platform, a plurality of positioning components for positioning the workpiece are provided on the workbench, the workbench is arranged parallel to the tool holder, a clamping member that can be the same in number and opposite in position as the positioning members is provided on the support platform, the workbench can be transformed between a first position and a second position, and when the workbench is in the second position, the positioning member cooperates with the clamping member to clamp the workpiece.

This three-dimensional engraving machine adopts a U-shaped gantry. The tool holder is set on the horizontal longitudinally movable gantry and can translate vertically up and down relative to the gantry, so that the tool, and the support table moves horizontally and laterally, so that the tool holder can form a three-dimensional translation relative to the support table. The workbench can swing back and forth or rotate with the strip direction of the workbench as the axis to change the first position and the second position. In the first position, short workpieces can be directly fixed on the workbench through the positioning assembly, and the parallel workbench and tool holder can form a sufficient angle for engraving, and when processing thick and long workpieces, the workbench can be changed to the second position, and the thick and long workpieces can be clamped in the horizontal direction with the support parts. In this way, the multi-tool head of this three-dimensional engraving machine can be applicable to both short and long workpieces, and has a very large range of application. It overcomes the practice that the general multi-tool head engraving machine can only place workpieces horizontally.

The tool head, tool holder, support platform, clamping member, etc. in the second and third three-dimensional engraving machines are arranged in the same structure as the first one.

Compared with the existing technology, this three-dimensional engraving machine has the following advantages:

1. The worktable of the three-dimensional engraving machine swings back and forth or rotates with the strip direction of the worktable as the axis to change the first position and the second position. When processing thick and long workpieces, the worktable is changed to the second position, and the thick and long workpiece is clamped in the horizontal direction with the support. When processing short workpieces, the worktable is changed to the first position, and the swinging worktable and the rotating positioning component are formed to form a multi-tool head six-axis engraving machine with a very wide range of applications.

2. The tool heads with different directions on the tool holder can be selected by swinging the tool holder to change the tool for engraving, which improves efficiency. When one tool head is engraving, the other tool heads will not interfere with the movement and swing of the workpiece, so that the swing angle of the workpiece can be increased, thereby increasing the application range of a single tool head and improving processing efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the three-dimensional structure of a three-dimensional engraving machine according to the first embodiment.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic cross-sectional view of the structure along line A-A in Fig. 2 .

FIG. 4 is a schematic structural diagram of a clamping state formed with the clamping member when the workbench in FIG. 1 is in the second position.

FIG. 5 is a schematic diagram of the structure of a state in which the handle is used to drive the clamping member to clamp.

FIG. 6 is a schematic diagram of the three-dimensional structure of the three-dimensional engraving machine of the second embodiment.

FIG. 7 is a schematic diagram of the three-dimensional structure of the three-dimensional engraving machine of the third embodiment.

FIG8 is a schematic diagram of the three-dimensional structure of the three-dimensional engraving machine of the fourth embodiment.

FIG. 9 is a schematic diagram of the three-dimensional structure of the three-dimensional engraving machine of the fifth embodiment.

10-12 are schematic diagrams of the structure of the positioning component.

In the figure, 1, base; 1a, support frame; 2, support table; 2a, support seat; 2b, bracket seat; 2c, motor 1; 2d, reducer; 3, tool holder; 3a, tool head; 3b, engraving tool set; 3c, motor; 3d, reducer; 4, workbench; 4a, strip plate; 4b, connecting plate; 4c, turntable; 4d, positioning assembly; 5, clamping part; 5a, top; 5b, top holder; 5c, cylinder; 6a, horizontal longitudinal guide ; 6b, horizontal cross guide rail; 6c, vertical guide rail; 7, longitudinal trailer; 8, vertical trailer; 8a, mounting seat; 8b, gear set; 8c, motor; 8d, reducer; 81, trailer; 82, trailer beam; 9, power source; 9a, motor 2; 9b, reducer; 9b1, transmission shaft; 9b2, output shaft; 10, cross trailer; 10a, bearing seat; 11, gantry beam; 12, gantry; 12a, column; 12b, connecting beam.

DETAILED DESCRIPTION

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

Embodiment 1:

As shown in FIG1 and in combination with FIG2-5, the present three-dimensional engraving machine is a multi-tool six-axis three-dimensional engraving machine, including a base 1 and a gantry beam 11. The support frames 1a on both sides of the base 1 are higher than the middle part. A horizontal longitudinal guide rail 6a is fixed on each support frame 1a, and a longitudinal carriage 7 is slidably connected to the horizontal longitudinal guide rail 6a. The gantry beam 11 is a straight strip, and its two ends are fixed on the longitudinal carriage 7 so that the gantry beam 11 can move horizontally and longitudinally. A support platform 2 is connected to the base 1 below the gantry beam 11. A tool holder 3 which is in the shape of an elongated strip and has a plurality of tool heads 3a is provided on the crossbeam 11. The tool holder 3 can form a three-dimensional translation relative to the support platform 2. The tool holder 3 can swing with the strip direction of the tool holder 3 as the axis. A workbench 4 which is in the shape of an elongated strip and is used to clamp the workpiece is provided on the support platform 2. The workbench 4 is arranged parallel to the tool holder 3 and can swing with the strip direction of the workbench 4 as the axis. A plurality of positioning components 5 which can rotate and are used to position the workpiece are provided on the upper side of the workbench 4.

Specifically, the support platform 2 is fixedly connected to the base 1, the horizontal transverse guide rail 6b is fixed to the gantry beam 11 and a transverse carriage 10 is slidably connected on the horizontal transverse guide rail 6b. The transverse carriage 10 can be a strip plate or an H-shaped bracket. The vertical guide rail 6c is arranged on the transverse carriage 10, and a vertical carriage 8 is slidably connected on the vertical guide rail 6c. The middle part of the tool holder 3 is rotatably connected to the vertical carriage 8, that is, the tool holder 3 is connected to the gantry beam 11 through the vertical guide rail 6c so that the tool holder 3 can move up and down. A mounting seat 8a is arranged on the outer side of the vertical carriage 8, and the middle part of the tool holder 3 is connected to the vertical carriage 8 through a bearing. A gear set 8b for driving the tool holder 3 to swing is arranged on the vertical carriage 8, and the gear set 8b is driven by the motor 8c through the reducer 8d. As an alternative, a transmission mechanism such as a belt or a chain can also drive the tool holder 3 to rotate. The driving mechanism for driving the vertical carriage 8 and the transverse carriage 10 to move can be a screw drive mechanism, a gear rack mechanism or a cylinder. As a simple replacement, the two ends of the tool holder 3 can also be rotatably connected to the vertical carriage 8. The tool holder 3 of this structure is driven by the motor 3c through the reducer 3d to swing.

The tool holder 3 is in the shape of an elongated strip and can be made into a square cross section or a circular cross section. In this example, a square cross section is adopted. A plurality of cutter heads 3a are arranged at intervals on the tool holder 3, and adjacent cutter heads 3a have at least two different orientations. It can be made into four different orientations as shown in FIG1 , with a tool spindle passing through the tool holder 3 so that two cutter heads 3a are formed at both ends of the tool spindle, and the adjacent tool spindles are perpendicular to the tool spindle and also pass through the tool holder 3 to form two cutter heads 3a, and these two tool spindles together form a group of engraving tool groups 3b, which are used to process the same workpiece, so that there are four cutter heads 3a that can process the workpiece. There are several groups of engraving tool groups 3b and they are arranged in sequence on the tool holder 3. Generally, the number of engraving tool groups 3b is determined according to the number of positioning components 5. The cutter heads 3a with different orientations can select the required cutter heads 3a by swinging the tool holder 3, and the tool change engraving is performed, which improves the efficiency. The engraving tool group 3b can also be simplified, for example, four cutter heads 3a can be simplified to three or two.

The workbench 4 includes a long strip plate 4a and a connecting plate 4b connected to both ends of the strip plate 4a. The connecting plate 4b and the strip plate 4a can be an integrated structure or a split welded structure. The turntable 4c is rotatably connected to the strip plate 4a. The positioning component 4d is located on the turntable 4c. The positioning component here is a clamping member, a top pressure member, an air adsorption member, or directly used for gluing the workpiece to the turntable 4c. The specific positioning component 4d is a gas adsorption member as shown in Figure 10, with an air suction hole 4d1 and an air duct 4d2 arranged on the upper surface of the turntable 4c, or a clamping member as shown in Figure 11, with a plurality of claws 4d3 arranged on the turntable 4c, and the workpiece is positioned by clamping the claws 4d3, or a top pressure member as shown in Figure 12, with a T-slot on the turntable 4c, a clamping bolt connected in the T-slot, and a pressure plate connected to the clamping bolt by thread. A power source 9 for driving the positioning assembly to rotate is provided on the lower side of the strip plate 4a of the workbench 4. The power source 9 includes a motor 2 9a and a reducer 9b arranged below each positioning assembly 5, each reducer 9b includes a horizontally arranged transmission shaft 9b1 and an output shaft 9b2 perpendicular to the transmission shaft 9b1, the output shaft 9b2 is connected to the positioning assembly, the transmission shafts 9b1 of two adjacent reducers 9b are coaxially connected, and the motor 2 9a is connected to the transmission shaft 9b1 of the reducer 9b located at the end. As a simple replacement, the power source 9 can also be a motor 3 arranged below each positioning assembly, and the output shaft 9b2 of each motor 3 is connected to the positioning assembly 5.

Two support seats 2a are provided on the support platform 2, and the workbench 4 is arranged between the two support seats 2a. The upper end of the connecting plate 4b is arranged on the outer side of the connecting sleeve or the rotating shaft. The connecting plates 4b at both ends of the workbench 4 are swingably connected to the support seats 2a through bearings 2e, and a motor 2c for driving the workbench 4 to swing is provided on the outer side of one of the support seats 2a. The motor 2c is fixed on the bracket seat 2b, and the reducer 2d of the motor 2c is connected to the connecting plate 4b. The clamping member 5 is a top 5a, and a top frame 5b that can approach or move away from the workbench and is in a long strip shape is slidably connected on the support platform 2. The top 5a is arranged on the top frame 5b, and a slide rail 2f is arranged along the horizontal longitudinal direction on the support platform 2. The top frame 5b is slidably connected to the slide rail 2f through a slider 5b1, and a locking structure is provided between the top frame 5b and the support platform 2 to fix the top frame 5b after sliding. The locking structure includes a fastener, the top frame 5b is slidably connected to the slide rail 2f, the fastener is threadedly connected to the top frame 5b, and the fastener can be rotated to make the fastener abut against the slide rail. In addition to this locking structure, the locking structure includes a latch, and the slide rail 2f is provided with a plurality of sockets arranged in a straight line, and the top frame 5b is locked on the slide rail by the latch.

The outer end of the top 5a is a spike structure, which can be a single conical spike or a disc-shaped structure with multiple spikes. The top 5a is slidably connected to the top frame 5b, and the top 5a is driven to extend outward by the cylinder 5c or the handle 5d so that the outer end of the top 5a cooperates with the workbench 4 to form a support.

When the workbench 4 is in the first position, a six-axis engraving machine with multiple tool heads is formed. After the workpiece is positioned on the positioning assembly 4d of the turntable 4c, when engraving and milling, according to the setting of the program, the tool holder 3 swings to select a tool head 3a to face the workpiece, and controls the tool holder 3, the workbench 4 and the turntable 4c to swing in coordination with each other, so that the tool head 3a can make any spatial arc and reach any angle when engraving the workpiece, with high precision. When the workbench 4 is in the second position, the workbench 4 no longer rotates and as part of the clamping assembly, cooperates with the clamping member to clamp the workpiece, forming a five-axis engraving machine with multiple tools, and improving the scope of application.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1, except that: as shown in FIG6 , a vertical guide rail 6c is fixedly connected to the middle part of the gantry beam 11 through a mounting plate, a vertical carriage 8 is slidably connected to the vertical guide rail 6c, the vertical carriage 8 is a strip-shaped plate or an H-shaped bracket, and the middle part of the tool holder 3 is rotatably connected to the vertical carriage 8; the support platform 2 is connected to the base 1a through a horizontal transverse guide rail 6b so that the support platform 2 can move horizontally.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, except that: as shown in FIG7 , the gantry 12 disposed on the base 1 includes two columns 12a slidably connected to the base 1, and the two columns 12a are connected and fixed by a connecting beam 12b to form a U-shaped gantry 12. The two columns 12a are fixedly connected to the longitudinal carriage 7 so that the gantry 12 can move horizontally and longitudinally, and the two columns 12a are respectively fixedly connected with vertical guide rails 6c, and each set of vertical guide rails 6c is slidably connected with a vertical carriage 8 so that the vertical carriage 8 can move vertically up and down, and a mounting seat 8a is provided on the vertical carriage 8, and the two ends of the tool holder 3 are rotatably connected to the mounting seat 8a. The support platform 2 is connected to the base 1a through a horizontal transverse guide rail 6b so that the support platform 2 can move horizontally and laterally.

Embodiment 4

The fourth embodiment is basically the same as the first embodiment, except that: as shown in FIG8 , the gantry 12 disposed on the base 1 includes two columns 12a slidably connected to the base 1, and the two columns 12a are connected and fixed by a connecting beam 12b to form a U-shaped gantry 12. The two columns 12a are fixedly connected to the longitudinal carriage 7 so that the gantry 12 can move horizontally and longitudinally, and the two columns 12a are respectively fixedly connected with vertical guide rails 6c, and a vertical carriage 8 is slidably connected to each set of vertical guide rails 6c so that the vertical carriage 8 can move vertically up and down, and the vertical carriage 8 includes a carriage plate 81 and a carriage beam 82 connected between the two carriage plates 81, and a horizontal transverse guide rail 6b is fixedly connected to the carriage beam 82 in a horizontal and transverse direction, and a strip-shaped transverse carriage 10 is slidably connected to the horizontal transverse guide rail 6b, and the middle part of the tool holder 3 is rotatably connected to the transverse carriage 10.

Embodiment 5

Embodiment 5 is basically the same as embodiment 4, except that: as shown in FIG9 , a long horizontal carriage 10 is slidably connected to the horizontal horizontal guide rail 6b, and two outer bearing seats 10a are provided on the horizontal carriage 10. The two ends of the tool holder 3 are rotatably connected to the bearing seats 10a of the horizontal carriage 10 and the tool holder 3 is driven to swing by a motor 3c through a reducer 3d.

The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims (23)

1. A three-dimensional engraving machine, comprising a base (1) and a gantry beam (11) connected to the base (1) and capable of horizontal and longitudinal movement, a support platform (2) being provided on the base (1) below the gantry beam (11), a tool holder (3) in the form of an elongated strip and having a plurality of tool heads (3a) being connected to the gantry beam (11) via a translation structure, the tool holder (3) forming a three-dimensional translation relative to the support platform (2), characterized in that a workbench (4) in the form of an elongated strip is provided on the support platform (2), a plurality of positioning components (4d) for positioning a workpiece are provided on the workbench (4), the workbench (4) and the tool holder (3) are arranged on the support platform (2) and the tool holder (3) is arranged on the support platform (2) and the tool holder (3) is arranged on the workbench (4) and the tool holder (3) is arranged on the support platform (2 ... The tool frame (3) is arranged in parallel, and a clamping member (5) having the same number and opposite position as the positioning assembly (4d) is provided on the support table (2), and the clamping member (5) is a top (5a). The workbench (4) is provided with a plurality of rotatable turntables (4c), and the positioning assembly (4d) is arranged on the turntable (4c). The workbench (4) can be switched between a first position and a second position. In the first position, the workpiece is fixed on the workbench (4) by the positioning assembly (4d), and when the workbench (4) is in the second position, the positioning assembly (4d) cooperates with the clamping member (5) to clamp the workpiece. 2. The three-dimensional engraving machine according to claim 1 is characterized in that the tool holder (3) can swing with the strip direction of the tool holder (3) as the axis, and a plurality of the tool heads (3a) are arranged at intervals on the tool holder (3), and the tool heads (3a) at the same location have at least two different directions. 3. The three-dimensional engraving machine according to claim 1 is characterized in that a long strip-shaped top frame (5b) capable of moving closer to or away from the workbench (4) is slidably connected to the support table (2), the top (5a) is arranged on the top frame (5b), and a locking structure is provided between the top frame (5b) and the support table (2) for fixing the top frame (5b) after it slides. 4. The three-dimensional engraving machine according to claim 1 is characterized in that the clamping member (5) includes a center seat, a center (5a) is arranged on the center seat, each center seat is slidably connected to the support platform (2), and a locking structure is provided between each center seat and the support platform (2) to fix the center (5a) after sliding. 5. The three-dimensional engraving machine according to any one of claims 1 to 4, characterized in that the workbench (4) can swing with the strip direction of the workbench (4) as the axis, and the positioning component (4d) can rotate relative to the workbench (4). 6. The three-dimensional engraving machine according to any one of claims 1 to 4 is characterized in that two support seats (2a) are provided on the support table (2), the workbench (4) is arranged between the two support seats (2a) and the two ends of the workbench (4) are swingably connected to the support seats (2a), and a motor (2c) for driving the workbench (4) to swing is provided on the outer side of one of the support seats (2a). 7. The three-dimensional engraving machine according to claim 6 is characterized in that the workbench (4) includes a long strip plate (4a) and connecting plates (4b) connected to both ends of the strip plate (4a), the upper end of the connecting plate (4b) is connected to the support seat (2a), and a power source (9) for driving the positioning assembly (4d) to rotate is provided on the lower side of the workbench (4). 8. The three-dimensional engraving machine according to claim 1 is characterized in that the translation structure between the tool holder (3) and the gantry beam (11) includes a vertical guide rail (6c) fixedly connected to the gantry beam (11), a vertical carriage (8) is slidably connected to the vertical guide rail (6c), the tool holder (3) is swingably connected to the vertical carriage (8), and the support platform (2) is connected to the base (1) through a horizontal transverse guide rail (6b) so that the support platform (2) can move horizontally. 9. The three-dimensional engraving machine according to claim 1 is characterized in that the translation structure between the tool holder (3) and the gantry beam (11) includes a horizontal transverse guide rail (6b) fixedly connected to the gantry beam (11), a transverse carriage (10) is slidably connected to the horizontal transverse guide rail (6b), the transverse carriage (10) is provided with a vertical guide rail (6c), a vertical carriage (8) is slidably connected to the vertical guide rail (6c), and the tool holder (3) is swingably connected to the vertical carriage (8). 10. The three-dimensional engraving machine according to claim 1 is characterized in that the translation structure between the tool holder (3) and the gantry beam (11) includes a vertical guide rail (6c) fixedly connected to the gantry beam (11), a vertical carriage (8) is slidably connected to the vertical guide rail (6c), the vertical carriage (8) is provided with a horizontal cross guide rail (6b), a cross carriage (10) is slidably connected to the horizontal cross guide rail (6b), and the tool holder (3) is swingably connected to the cross carriage (10). 11. A three-dimensional engraving machine, comprising a base (1) and a gantry (12) arranged on the base (1) and capable of horizontal longitudinal movement, the gantry (12) comprising two columns (12a) slidably connected to the base (1), a vertical carriage (8) capable of vertical upward and downward movement is arranged on the two columns (12a), a support platform (2) is fixed on the base (1), a tool holder (3) in the form of an elongated strip and having a plurality of tool heads (3a) is arranged on the vertical carriage (8), the tool holder (3) is connected to the vertical carriage (8) via a horizontal transverse guide rail (6b) so that the tool holder (3) can move horizontally, and the feature is that a workbench (4) in the form of an elongated strip is arranged on the support platform (2), and a workbench (4) is arranged on the workbench (4). A plurality of positioning components (4d) for positioning a workpiece are provided. The workbench (4) is arranged in parallel with the tool holder (3). A number of clamping members (5) which are equal in number to the number of the positioning components (4d) and are located opposite to each other are provided on the support table (2). The clamping members (5) are vertices (5a). The workbench (4) is provided with a plurality of rotatable turntables (4c). The positioning components (4d) are arranged on the turntables (4c). The workbench (4) can be switched between a first position and a second position. In the first position, the workpiece is fixed on the workbench (4) by the positioning components (4d). When the workbench (4) is in the second position, the positioning components (4d) cooperate with the clamping members (5) to clamp the workpiece. 12. The three-dimensional engraving machine according to claim 11 is characterized in that the tool holder (3) can swing with the strip direction of the tool holder (3) as the axis, and a plurality of the tool heads (3a) are arranged at intervals on the tool holder (3), and the tool heads (3a) at the same location have at least two different directions. 13. The three-dimensional engraving machine according to claim 11 is characterized in that a long top frame (5b) capable of approaching or moving away from the workbench (4) is slidably connected to the support table (2), the top (5a) is arranged on the top frame (5b), and a locking structure is provided between the top frame (5b) and the support table (2) to fix the top frame (5b) after sliding. 14. The three-dimensional engraving machine according to any one of claims 11 to 13, characterized in that the workbench (4) can swing with the strip direction of the workbench (4) as the axis, and the positioning component (4d) can rotate relative to the workbench (4). 15. The three-dimensional engraving machine according to claim 14 is characterized in that two support seats (2a) are provided on the support table (2), the workbench (4) is arranged between the two support seats (2a), and the two ends of the workbench (4) are swingably connected to the support seats (2a), and a motor (2c) for driving the workbench (4) to swing is provided on the outer side of one of the support seats (2a). 16. The three-dimensional engraving machine according to claim 15 is characterized in that the workbench (4) includes a long strip plate (4a) and connecting plates (4b) connected to both ends of the strip plate (4a), the upper end of the connecting plate (4b) is connected to the support seat (2a), and a power source (9) for driving the positioning assembly (4d) to rotate is provided on the lower side of the workbench (4). 17. The three-dimensional engraving machine according to claim 11 is characterized in that the vertical carriage (8) is fixedly connected to a horizontal transverse guide rail (6b), a transverse carriage (10) is slidably connected to the horizontal transverse guide rail (6b), and the middle part or both ends of the tool holder (3) are swingably connected to the transverse carriage (10). 18. A three-dimensional engraving machine, comprising a base (1) and a gantry (12) arranged on the base (1) and capable of horizontal longitudinal movement, the gantry (12) comprising two columns (12a) slidably connected to the base (1), a vertical carriage (8) capable of vertical upward and downward movement being arranged on the two columns (12a), a support platform (2) capable of horizontal transverse movement being arranged on the base (1) below the gantry (12), a tool holder (3) in the form of an elongated strip and having a plurality of tool heads (3a) being connected to the vertical carriage (8), characterized in that a workbench (4) in the form of an elongated strip is arranged on the support platform (2), and a plurality of positioning tools (3a) for positioning workpieces are arranged on the workbench (4). The invention relates to a tool holder (3) and a workbench (4). The tool holder (3) and the workbench (4) are arranged in parallel with each other. A number of clamping members (5) which are the same as the number of the positioning members (4d) and are located opposite to each other are arranged on the support table (2). The clamping members (5) are vertices (5a). The workbench (4) is provided with a plurality of rotatable turntables (4c). The positioning members (4d) are arranged on the turntables (4c). The workbench (4) can be switched between a first position and a second position. When the workbench (4) is in the first position, the workpiece is fixed on the workbench (4) by the positioning member (4d). When the workbench (4) is in the second position, the positioning member (4d) cooperates with the clamping member (5) to clamp the workpiece. 19. The three-dimensional engraving machine according to claim 18 is characterized in that the tool holder (3) can swing with the strip direction of the tool holder (3) as the axis, and a plurality of the tool heads (3a) are arranged at intervals on the tool holder (3), and the tool heads (3a) at the same location have at least two different directions. 20. The three-dimensional engraving machine according to claim 18 is characterized in that a long strip-shaped top frame (5b) capable of approaching or moving away from the workbench (4) is slidably connected to the support table (2), the top (5a) is arranged on the top frame (5b), and a locking structure is provided between the top frame (5b) and the support table (2) to fix the top frame (5b) after it slides. 21. The three-dimensional engraving machine according to claim 18, 19 or 20, characterized in that the workbench (4) can swing with the strip direction of the workbench (4) as the axis, and the positioning component (4d) can rotate relative to the workbench (4). 22. The three-dimensional engraving machine according to claim 18 is characterized in that two support seats (2a) are provided on the support table (2), the workbench (4) is arranged between the two support seats (2a), and the two ends of the workbench (4) are swingably connected to the support seats (2a), and a motor (2c) for driving the workbench (4) to swing is provided on the outer side of one of the support seats (2a). 23. The three-dimensional engraving machine according to claim 18 is characterized in that the workbench (4) includes a long strip plate (4a) and connecting plates (4b) connected to both ends of the strip plate (4a), the upper end of the connecting plate (4b) is connected to the support seat (2a), and a power source (9) for driving the positioning assembly (4d) to rotate is provided on the lower side of the workbench (4).