CN109733103B - A three-dimensional engraving machine - Google Patents

Abstract

The present invention provides a three-dimensional engraving machine, which belongs to the field of mechanical technology. It solves the problem of how to improve the applicability of existing three-dimensional engraving machines. The three-dimensional engraving machine includes a frame, a support platform and a long strip tool holder are provided on the frame, a plurality of tool heads are provided on the tool holder, and translation structures are respectively provided between the support platform and the tool holder and the frame so that the tool holder forms a three-dimensional translation relative to the support platform, a long strip workbench 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 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. The three-dimensional engraving machine improves the applicable scope of processing while ensuring 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. 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 frame, a support platform and a long strip tool holder are arranged on the frame, a plurality of tool heads are arranged on the tool holder, translation structures are respectively arranged between the support platform and the tool holder and the frame so that the tool holder forms a three-dimensional translation relative to the support platform, a long strip workbench is arranged on the support platform, characterized in that a plurality of positioning components for positioning the workpiece are arranged 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 arranged 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, for example, the tool holder can translate vertically up and down and horizontally left and right, and the support table can translate horizontally forward and backward, or the tool holder can translate vertically up and down, and the support table can translate horizontally forward and backward and 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 member. 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 scope 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, several of the tool heads are arranged at intervals on the tool holder, and the tool heads at the same location have at least two different orientations. Tool heads at the same location with different orientations 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. The number of engraving tool groups is generally determined according to the number of positioning components. Tool heads with different orientations can select the required tool heads by swinging the tool holder, and tool change and engraving can be performed, thereby improving efficiency. Moreover, tool heads with different orientations can select two tool heads in opposite directions, or four tool heads with a 90-degree difference in four directions, namely, 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.

In the above-mentioned three-dimensional engraving machine, the frame includes a base and a crossbeam fixed on the base, the translation structure between the support platform and the frame includes a horizontal transverse guide rail and a horizontal longitudinal guide rail, and the support platform is connected to the base through the horizontal transverse guide rail and the horizontal longitudinal guide rail so that the support platform can move horizontally and vertically; the translation structure between the tool holder and the frame includes a vertical guide rail, and the tool holder is connected to the crossbeam through the vertical guide rail so that the tool holder can move up and down.

In the above-mentioned three-dimensional engraving machine, the vertical guide rail is arranged in the middle of the crossbeam, a vertical carriage is slidably connected to the vertical guide rail, and the tool holder is rotatably connected to the vertical carriage.

In the above-mentioned three-dimensional engraving machine, there are two groups of vertical guide rails, which are respectively arranged at the two ends of the crossbeam. A vertical carriage is provided on each group of vertical guide rails, and the two ends of the tool holder are rotatably connected to the corresponding vertical carriages.

In the above-mentioned three-dimensional engraving machine, the frame includes a base and a crossbeam fixed on the base, the translation structure between the support platform and the frame includes a horizontal longitudinal guide rail, and the support platform is connected to the base through the horizontal longitudinal guide rail so that the support platform can move horizontally longitudinally; the translation structure between the tool holder and the frame includes a vertical guide rail and a horizontal cross guide rail, and the tool holder is connected to the crossbeam through the vertical guide rail and the horizontal cross guide rail so that the tool holder can move up and down and horizontally.

In the above-mentioned three-dimensional engraving machine, the vertical guide rail is fixed to the horizontal beam and a vertical carriage is slidably connected to the vertical guide rail. The horizontal guide rail is arranged on the vertical carriage and a horizontal carriage is slidably connected to the horizontal guide rail. The two ends or the middle of the tool holder are rotatably connected to the horizontal carriage.

In the above-mentioned three-dimensional engraving machine, the horizontal cross guide rail is fixed to the cross beam and is slidably connected to a cross carriage on the horizontal cross guide rail. The vertical guide rail is arranged on the cross carriage and is slidably connected to a vertical carriage on the vertical guide rail. The two ends or the middle part of the tool holder are rotatably connected to the vertical carriage.

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, the application range of a single tool head is increased, and the processing efficiency is improved.

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

FIG. 3 is a schematic diagram of the structure of a state in which a handle is used to drive the clamping member to clamp.

FIG. 4 is a schematic diagram of the three-dimensional structure of FIG. 1 from another viewing angle.

FIG. 5 is a top view of FIG. 1 .

Fig. 6 is a schematic cross-sectional view of the structure along line A-A in Fig. 5 .

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

FIG8 is a schematic diagram of the three-dimensional structure of the three-dimensional engraving machine of the third embodiment with part of the support platform removed.

FIG. 9 is a schematic diagram of the three-dimensional structure of the three-dimensional engraving machine of the fourth embodiment with part of the support platform removed.

Figures 10-12 are schematic diagrams of the structures of four different positioning components.

In the figure, 1, frame; 1a, base; 1b, crossbeam; 1c, column; 2, support table; 2a, support seat; 2b, bracket seat; 2c, motor 1; 2d, reducer; 2e, bearing; 2f, slide rail; 3, tool holder; 3a, tool head; 3b, carving tool set; 4, workbench; 4a, strip plate; 4b, connecting plate; 4c, turntable; 4d, positioning assembly; 4d1, air suction hole; 4d2, airway; 4d3, claw; 5 , clamping part; 5a, top; 5b, top rack; 5c, cylinder; 5d, handle; 6a, horizontal longitudinal guide rail; 6b, horizontal transverse guide rail; 6c, vertical guide rail; 7, longitudinal drag rack; 8, vertical drag rack; 8a, mounting seat; 8b, gear set; 8c, motor; 8d, reducer; 8e, bearing seat; 8f, motor; 9, power source; 9a, motor 2; 9b, reducer; 9b1, transmission shaft; 9b2, output shaft; 10, transverse drag rack.

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 Figure 1, Figure 1 is a multi-tool six-axis three-dimensional engraving machine, including a frame 1, a support table 2 and a long strip tool holder 3 are provided on the frame 1, and a translation structure is respectively arranged between the support table 2 and the tool holder 3 and the frame 1 so that the tool holder 3 is relative to the support table 2, and a plurality of tool heads 3a are arranged on the tool holder 3 and can swing with the strip direction of the tool holder 3 as the axis, and a long strip workbench 4 for clamping the workpiece is provided on the support table 2, the workbench 4 is arranged parallel to the tool holder 3 and the workbench 4 can swing with the strip direction of the workbench 4 as the axis so that the workbench 4 can be transformed between a first position and a second position, and a plurality of rotatable turntables 4c are provided on the upper side of the workbench 4, and a positioning assembly 4d for positioning the workpiece is provided on the turntable 4c, and a clamping member 5 that can be the same in number and opposite in position as the positioning assembly 4d is provided on the support table 2, and when the workbench is in the second position, the positioning assembly 4d cooperates with the clamping member 5 to clamp the workpiece.

Specifically, as shown in FIG. 1 and in combination with FIG. 2-6, the frame 1 includes a base 1a and a crossbeam 1b, the crossbeam 1b is fixed to the middle and rear part of the base 1a through two columns 1c, the support platform 2 is located below the crossbeam 1b and connected to the base 1a, a horizontal longitudinal guide rail 6a is fixed on the base 1a, a longitudinal carriage 7 is slidably connected to the horizontal longitudinal guide rail 6a, a horizontal transverse guide rail 6b is fixedly connected to the longitudinal carriage 7, and the support platform 2 is slidably connected to the horizontal transverse guide rail 6b. As a simple replacement, it is also possible to connect the horizontal transverse guide rail 6b and the horizontal longitudinal guide rail 6a on the base 1a for interchangeability, that is, the support platform 2 is connected to the base 1a through the horizontal transverse guide rail 6b and the horizontal longitudinal guide rail 6a so that the support platform 2 can move horizontally and horizontally. The longitudinal carriage 7 can be a strip plate or an H-shaped bracket, and the driving mechanism that drives the longitudinal carriage 7 and the support platform 2 to move can be a screw drive mechanism, a gear rack mechanism or a cylinder, etc.

A vertical guide rail 6c is fixedly connected to the middle of the crossbeam 1b through a mounting plate, and a vertical carriage 8 is slidably connected to the vertical guide rail 6c. The vertical carriage 8 is a strip plate or H-shaped bracket. The tool holder 3 is swingably connected to the vertical carriage 8, that is, the tool holder 3 is connected to the crossbeam 1b through the vertical guide rail 6c so that the tool holder 3 can move up and down. A mounting seat 8a is provided on the outside of the vertical carriage 8. The middle 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 provided on the vertical carriage 8. The gear set 8b is driven by a motor 8c through a reducer 8d. As an alternative, a transmission structure such as a belt or a chain can also drive the tool holder 3 to rotate.

The tool holder 3 is in the shape of a long strip and can be made into a square cross section or a circular cross section. In this example, a square cross section is adopted. Several 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 Figure 1. A tool spindle passes through the tool holder 3 so that two cutter heads 3a are formed at both ends of the tool spindle. The adjacent tool spindles are perpendicular to the tool spindle and also pass through the tool holder 3 to form two cutter heads 3a. These two tool spindles together form a group of engraving tool groups 3b for processing 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 turntables 4c. 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 improved, 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 turntable 4c is provided with a workpiece positioning component 4d for positioning the workpiece. The positioning component 4d here is a clamping member, a top pressure member, an air adsorption member, or is directly used to glue 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 workpiece positioning assembly 4d, 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 workpiece positioning assembly 4d.

Two support seats 2a are provided on the support table 2, and the workbench 4 is arranged between the two support seats 2a. The upper end of the connecting plate 4b is provided 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 1 2c for driving the workbench 4 to swing is provided on the outer side of one of the support seats 2a. The motor 1 2c is fixed on the bracket seat 2b, and the motor 1 2c is connected to the connecting plate 4b through a reducer 2d.

The clamping member 5 is a tip 5a, and a tip frame 5b which can move close to or away from the workbench and is in a long strip shape is slidably connected on the support platform 2. The tip 5a is arranged on the tip frame 5b, and a slide rail 2f is arranged along the horizontal longitudinal direction on the support platform 2. The tip frame 5b is slidably connected to the slide rail 2f through a slider 5b1, and a locking structure is provided between the tip frame 5b and the support platform 2 to fix the tip frame 5b after sliding. The locking structure includes a fastener, and the tip frame 5b is slidably connected to the slide rail 2f. The fastener is connected to the tip frame 5b by a thread, 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 is provided with a plurality of sockets arranged in a straight line, and the tip frame 5b is locked to 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

The second embodiment is basically the same as the first embodiment, except that the support platform 2 is connected to the base 1a through the horizontal longitudinal guide rail 6a so that the support platform 2 can move horizontally and longitudinally, and the tool holder 3 is connected to the crossbeam 1b through the vertical guide rail 6c and the horizontal cross guide rail 6b so that the tool holder 3 can move up and down and horizontally and transversely. Specifically, as shown in Figure 7, the horizontal cross guide rail 6b is fixed to the crossbeam 1b and is slidably connected to a strip-shaped cross carriage 10 on the horizontal cross guide rail 6b, the vertical guide rail 6c is arranged on the cross carriage 10, and a vertical carriage 8 is slidably connected to the vertical guide rail 6c. The vertical carriage 8 is in the shape of a long strip of strips, or it can be H-shaped, and two convex bearing seats 8e are provided on the vertical carriage 8, and the two ends of the tool holder 3 are rotatably connected to the bearing seats 8e of the vertical carriage 8. The motor 8f is connected to the end of the tool holder 3 through the reducer 8d, or the middle part of the tool holder 3 is rotatably connected to the mounting seat 8a of the vertical carriage 8. A horizontal longitudinal guide rail 6a is fixed on the base 1a, and the support platform 2 is slidably connected to the horizontal longitudinal guide rail 6a. Alternatively, a vertical guide rail 6c is fixed to the crossbeam 1b and a vertical carriage 8 is slidably connected to the vertical guide rail 6c, a horizontal transverse guide rail 6b is arranged on the vertical carriage 8, a transverse carriage 10 is slidably connected to the horizontal transverse guide rail 6b, and both ends of the tool holder 3 are rotatably connected to the transverse carriage 10 or the middle of the tool holder 3 is rotatably connected to the transverse carriage.

Embodiment three:

Embodiment 3 is basically the same as Embodiment 1, except that: as shown in FIG. 8 , there are two groups of vertical guide rails 6c, which are respectively arranged on the columns at the two ends of the crossbeam 1b, and a vertical carriage 8 is provided on each group of vertical guide rails 6c, and the two ends of the tool holder 3 are rotatably connected to the corresponding vertical carriage 8.

Embodiment 4:

Embodiment 4 is basically the same as Embodiment 2, except that: as shown in FIG. 9 , there are two groups of vertical guide rails 6c, which are respectively arranged on the columns at the two ends of the crossbeam 1b, and a vertical carriage 8 is provided on the two groups of vertical guide rails 6c. A horizontal cross guide rail 6b is fixed on the vertical carriage 8 along the horizontal direction, and a cross carriage 10 is slidably connected to the horizontal cross guide rail 6b. The two ends of the tool holder 3 are rotatably connected to the cross carriage 10 or the middle part of the tool holder 3 is rotatably connected to the cross carriage 10.

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 (13)

1. The utility model provides a three-dimensional engraving machine, includes frame (1), is equipped with brace table (2) and rectangular cutter frame (3) on frame (1), be equipped with a plurality of tool bits (3 a) on cutter frame (3), set up translation structure between brace table (2) and cutter frame (3) and frame (1) respectively and make cutter frame (3) form three-dimensional translation for brace table (2), brace table (2) on be equipped with and take shape in rectangular workstation (4), characterized in that, be equipped with a plurality of groups of locating component (4 d) that are used for locating the work piece on workstation (4), workstation (4) and cutter frame (3) parallel arrangement, be equipped with on brace table (2) can be the same with locating component (4 d) quantity and holder (5) that the position is relative, holder (5) be tip (5 a), workstation (4) on be equipped with a plurality of carousel (4 c) that can rotate, above-mentioned locating component (4 d) set up on carousel (4 c), workstation (4) can be in the first position and second position through fixed in between workstation (4) and first position when locating component (4 d), when the workbench (4) is in the second position, the positioning component (4 d) is matched with the clamping piece (5) to clamp the workpiece.

2. The stereoscopic engraving machine according to claim 1, characterized in that said tool holder is capable of swinging about the axis of the bar-shaped direction of the tool holder (3); the plurality of tool bits (3 a) are arranged on the tool frame (3) at intervals, and the tool bits (3 a) at the same position have at least two different orientations.

3. The stereoscopic engraving machine according to claim 1, characterized in that a strip-shaped tip holder (5 b) which can be close to or far from the workbench (4) is connected to the supporting table (2) in a sliding manner, the tip (5 a) is arranged on the tip holder (5 b), and a locking structure which is fixed after the tip holder (5 b) slides is arranged between the tip holder (5 b) and the supporting table (2).

4. The stereoscopic engraving machine according to claim 1, characterized in that the clamping member (5) comprises a tip seat, the tip (5 a) is arranged on the tip seat, each tip seat is respectively and slidably connected to the supporting table (2), and a locking structure for fixing the tip (5 a) after sliding is arranged between each tip seat and the supporting table (2).

5. The machine according to any one of claims 1 to 4, wherein the table (4) swings back and forth about a bar-shaped direction of the table (4), and the positioning unit (4 d) is rotatable with respect to the table (4).

6. The stereoscopic carving machine according to any one of claims 1 to 4, wherein two supporting seats (2 a) are arranged on the supporting table (2), the workbench (4) is arranged between the two supporting seats (2 a) and two ends of the workbench (4) are connected to the supporting seats (2 a) in a swinging manner, and a motor I (2 c) for driving the workbench (4) to swing is arranged outside one supporting seat (2 a).

7. The stereoscopic engraving machine according to claim 6, characterized in that the workbench (4) comprises a strip-shaped plate (4 a) and connecting plates (4 b) connected to two ends of the strip-shaped plate (4 a), the upper ends of the connecting plates (4 b) are connected with the supporting seat (2 a), and a power source (9) for driving the positioning component (4 d) to rotate is arranged on the lower side of the workbench (4).

8. The stereolithography machine according to claim 1, wherein said frame (1) comprises a base (1 a) and a cross beam (1 b) fixed to the base (1 a), the translation structure between the support table (2) and the frame (1) comprises a horizontal transverse rail (6 b) and a horizontal longitudinal rail (6 a), said support table (2) being connected to the base (1 a) by means of the horizontal transverse rail (6 b) and the horizontal longitudinal rail (6 a) so that the support table (2) can move horizontally and longitudinally; the translation structure between the tool frame (3) and the frame (1) comprises a vertical guide rail (6 c), and the tool frame (3) is connected to the cross beam (1 b) through the vertical guide rail (6 c) so that the tool frame (3) can move up and down.

9. The stereoscopic engraving machine according to claim 8, characterized in that the vertical guide rail (6 c) is arranged in the middle of the cross beam (1 b), the vertical guide rail (6 c) is slidably connected with a vertical bracket (8), and the tool holder (3) is rotatably connected to the vertical bracket (8).

10. The three-dimensional engraving machine according to claim 8, characterized in that two groups of vertical guide rails (6 c) are respectively arranged at two ends of the cross beam (1 b), each group of vertical guide rails (6 c) is provided with a vertical bracket (8), and two ends of the cutter frame (3) are respectively connected with the corresponding vertical brackets (8) in a rotating way.

11. The stereolithography machine according to claim 1, wherein said frame (1) comprises a base (1 a) and a cross beam (1 b) fixed to the base (1 a), said translation structure between said support table (2) and the frame (1) comprises a horizontal longitudinal rail (6 a), said support table (2) being connected to the base (1 a) by means of the horizontal longitudinal rail (6 a) so as to enable a horizontal longitudinal movement of the support table (2); the translation structure between the tool frame (3) and the frame (1) comprises a vertical guide rail (6 c) and a horizontal transverse guide rail (6 b), and the tool frame (3) is connected to the cross beam (1 b) through the vertical guide rail (6 c) and the horizontal transverse guide rail (6 b) so that the tool frame (3) can move up and down and horizontally and transversely.

12. The stereoscopic carving machine according to claim 11, wherein the vertical guide rail (6 c) is fixed with the cross beam (1 b), the vertical guide rail (6 c) is connected with a vertical bracket (8) in a sliding manner, the horizontal transverse guide rail (6 b) is arranged on the vertical bracket (8), the horizontal transverse guide rail (6 b) is connected with a transverse bracket (10) in a sliding manner, and two ends or the middle part of the cutter frame (3) are connected to the transverse bracket (10) in a rotating manner.

13. The stereoscopic carving machine according to claim 11, wherein the horizontal transverse guide rail (6 b) is fixed with the cross beam (1 b) and is connected with a transverse towing frame (10) in a sliding manner on the horizontal transverse guide rail (6 b), the vertical guide rail (6 c) is arranged on the transverse towing frame (10), the vertical guide rail (6 c) is connected with a vertical towing frame (8) in a sliding manner, and two ends or the middle part of the cutter frame (3) are connected to the vertical towing frame (8) in a rotating manner.