CN210161836U

CN210161836U - Three-dimensional carving machine

Info

Publication number: CN210161836U
Application number: CN201920277970.4U
Authority: CN
Inventors: 吴善旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-03-20
Anticipated expiration: 2029-03-05

Abstract

The utility model provides a three-dimensional engraver belongs to mechanical technical field. It has solved the suitability problem that how to improve current three-dimensional engraver. This three-dimensional engraver includes the frame, is equipped with the toolframe of brace table and rectangular shape in the frame, be equipped with a plurality of tool bits on the toolframe, brace table and toolframe set up the translation structure respectively and between the frame and make the toolframe form three-dimensional translation for the brace table on be equipped with the workstation that is rectangular shape, be equipped with the locating component that a plurality of groups are used for fixing a position the work piece on the workstation, workstation and toolframe parallel arrangement, be equipped with on the brace table can with the same and relative holder in position of locating component quantity, the workstation can alternate between primary importance and secondary importance, when the workstation is in the secondary importance locating component with the holder cooperate and live the work piece centre gripping. The three-dimensional engraving machine improves the application range of processing under the condition of ensuring the efficiency.

Description

Three-dimensional carving machine

Technical Field

The utility model belongs to the technical field of machinery, a three-dimensional engraver of multitool head simultaneous processing is related to, especially a six three-dimensional engravers of multitool head.

Background

The three-dimensional engraving machine has more machine types, can be applied to engraving in processing of wood, stone, metal, plastic and the like, but along with the increasing complexity of workpieces, various adaptive three-dimensional engraving machines appear in succession aiming at the engraving processing of workpieces with complex shapes. In order to improve the processing efficiency, the optimal efficiency improving method in the field of three-dimensional engraving machines is adopted when a plurality of cutter heads simultaneously process, so that the cutter heads are arranged on the cutter frame to synchronously move and synchronously process.

For example, the chinese patent application No. CN201520018008.0 discloses a three-dimensional carving machine, which comprises a frame and a carving platform; the carving platform is located at the lower end of the rack, the movable support is arranged on the carving platform, and the four-jaw self-centering chuck assembly used for fixing the workpiece is arranged on the movable support. The upper end of the frame is provided with a lifting component which can also be positioned in the middle or at two sides of the frame. The movable support is provided with an adsorption platform which is adsorbed by a vacuum pump. After a product is clamped by the four-jaw self-centering chuck assembly, the position and the angle of the graver are adjusted through the lifting assembly, and then the product is carved after the position and the angle of the product are adjusted through the movable support.

The three-dimensional engraving machine type can only adopt a horizontal clamping mode to clamp, and a thick and long workpiece is difficult to engrave a groove with an inclined groove wall on the multi-cutter-head cutter frame by adopting vertical clamping, and is difficult to clamp due to too high height. Although it is convenient to use horizontal clamps, the height of the clamping mechanism of this engraving machine type is fixed, resulting in a limited height between the tool and the clamping mechanism. Therefore, the engraver of such a similar type becomes very difficult to machine a short work piece, and it is difficult to engrave the inclined recessed groove surface due to insufficient length and angle. Therefore, the engraving machine of the type is generally only suitable for processing thick and long workpieces, and has larger processing difficulty for short and small parts.

Disclosure of Invention

The utility model discloses there is above-mentioned problem to current technique, has provided a three-dimensional engraver, the utility model aims to solve the technical problem how to improve the suitability under the circumstances of guaranteeing machining efficiency.

The utility model discloses a following technical scheme realizes: the utility model provides a three-dimensional engraver, includes the frame, is equipped with the toolframe of brace table and rectangular shape in the frame, be equipped with a plurality of tool bits on the toolframe, brace table and toolframe set up the translation structure respectively and between the frame and make the toolframe form three-dimensional translation for the brace table on be equipped with the workstation that is rectangular shape, its characterized in that is equipped with the locating component that a plurality of groups are used for fixing a position the work piece on the workstation, workstation and toolframe parallel arrangement, be equipped with on the brace table can with the same and relative holder in position of locating component quantity, the workstation can alternate between primary importance and secondary importance, when the workstation is in the secondary importance locating component with the holder cooperate and live the work piece centre gripping.

This cutter frame among three-dimensional engraver can form three-dimensional translation for a supporting bench, for example the cutter frame can be vertical translation from top to bottom and horizontal translation from left to right, and a supporting bench can be vertical preceding back translation of level, perhaps the cutter frame can be vertical translation from top to bottom, and a supporting bench can be horizontal vertical translation from front to back and horizontal translation from left to right. The workstation can use the bar direction of workstation to carry out the fore-and-aft movement or rotate and alternate primary importance and second position as the axle center, when primary importance, can pass through locating component snap-on the workstation with short and small work piece, and parallel arrangement's workstation and toolframe can form sufficient angle and carve, and when processing thick and long work piece, can alternate the workstation to the second place, the cooperation adds the holder and grasps thick and long work piece in the horizontal direction, and like this, this three-dimensional engraver's multitool head just can both be suitable for short and small work piece and thick and long work piece, has very big application scope. The method that the universal multi-cutter-head engraving machine can only horizontally place the workpiece is overcome.

In the three-dimensional carving machine, the plurality of tool bits are arranged on the tool rest at intervals, and at least two different orientations of the tool bits are arranged at the same position. The tool bits in different directions at the same position form a group of tool bit groups for engraving the same workpiece, the groups of the engraving tool groups are sequentially arranged on the tool rest, and the number of the engraving tool groups is generally determined according to the number of the positioning components. The tool bits in different directions can be selected by swinging the tool rest to change the tool and carve, and the efficiency is improved. And the tool bits of different orientations can select two tool bits of opposite directions, also can select four tool bits that four directions differ by 90 degrees from top to bottom. When one tool bit is used for carving, the rest tool bits cannot interfere with the movement and the swing of the workpiece, and the application range and the machining efficiency are improved.

In the three-dimensional engraving machine, the clamping piece is a tip, a long-strip-shaped tip holder which can be close to or far away from the workbench is connected onto the support table in a sliding manner, the tip is arranged on the tip holder, and a locking structure which is fixed after the tip holder slides is arranged between the tip holder and the support table. All the centers are driven to move together through the center frame, and clamping efficiency can be improved.

The outer end of the centre is of a spike structure, can be of a single conical spike or of a disc-shaped structure with a plurality of spikes, is connected on the centre frame in a sliding manner, and is driven by a handle or an air cylinder to extend out to be matched with the workbench to form clamping. The handle driving tip can extend outwards by adopting transmission structures such as threads or gear racks.

In the three-dimensional engraving machine, the clamping piece comprises a tip seat and a tip arranged on the tip seat, each tip seat is respectively connected to the support platform in a sliding manner, and a locking structure which is fixed after the tip slides is arranged between each tip seat and the support platform. The single independent clamping piece can be suitable for workpieces with different lengths to clamp, and the application range is expanded.

In the three-dimensional engraving machine, the locking structure comprises a fastener, a slide rail is arranged on the support table along the horizontal longitudinal direction, the center frame or the center seat is connected to the slide rail in a sliding manner, the fastener is connected to the center frame or the center seat through threads, and the fastener can abut against the slide rail by rotating the fastener.

Besides the locking structure, the locking structure comprises a bolt, a plurality of jacks which are arranged in a straight line are arranged on the slide rail, and the center frame or the center seat is locked on the slide rail through the bolt. The locking can also be realized in a way of directly pulling a threaded strip, positioning and locking a gear rack or clamping a sliding rail.

In the three-dimensional engraving machine, the worktable swings back and forth by taking the strip-shaped direction of the worktable as an axis, and the positioning assembly can rotate relative to the worktable. By adopting the structure, the three-dimensional engraving machine is upgraded to a multi-cutter six-shaft engraving machine, the three-dimensional engraving machine can have greater applicability after the layout is adopted, and the engraving precision can be further improved.

The positioning assembly can rotate relative to the workbench in two ways: one is that a plurality of turntables which can rotate are arranged on a workbench, and a positioning component is arranged on the turntables; the other type is that a plurality of output shafts capable of rotating are arranged on the workbench, the positioning assembly is arranged on the output shafts, and the output shafts can be rotating shafts which are rotatably connected on the workbench and can also be output shafts of motors or output shafts of speed reducers. The positioning assembly can be used in various ways, such as clamping, pressing, air-suction or glue bonding. The positioning component can rotate to enable the three-dimensional engraving machine to become a six-axis engraving machine with multiple cutter heads, and the positioning component is arranged on the basis of the double-swing structure to rotate so as to better realize the stability and the processing precision of the six-axis engraving machine.

In foretell three-dimensional engraver, the brace table on be equipped with two supporting seats, the workstation setting is between two supporting seats and the both ends swing of workstation is connected on the supporting seat, is equipped with the motor that is used for driving the workstation wobbling outside one of them supporting seat. The workbench is improved through the supporting seat, and the swing range of the large workbench is increased. The external motor avoids causing swing interference to the workbench.

In foretell three-dimensional engraver, the workstation include the strip shaped plate of rectangular shape and connect the connecting plate at strip shaped plate both ends, the upper end and the supporting seat of connecting plate are connected, are equipped with drive locating component pivoted power supply at the downside of workstation. The distance between the workbench and the tool rest is enlarged through the connecting plate, so that the application range of the workpiece is enlarged, and the swing range of the connecting plate can be enlarged.

In the three-dimensional engraving machine, the power source comprises a second motor and speed reducers arranged below each positioning assembly, each speed reducer comprises a transmission shaft horizontally arranged and an output shaft perpendicular to the transmission shaft, the output shafts are used for driving the positioning assemblies to rotate, the transmission shafts of two adjacent speed reducers are coaxially connected in series, and the second motor is connected with the transmission shaft of the speed reducer positioned at the end part.

In the three-dimensional engraving machine, the power source comprises a third motor arranged below each positioning assembly, and each third motor is used for driving each positioning assembly to rotate. The output shaft of the motor III can directly drive the positioning component to rotate or the motor III drives the positioning component to rotate through the output shaft of the speed reducer.

The power source is arranged at the bottom of the workbench, so that the interference to the workpiece can be avoided, and the swing range between the tool rest and the workbench can not be reduced. And this configuration enables the center of gravity to be balanced while the workpiece is positioned in the positioning assembly.

In the three-dimensional engraving machine, the rack comprises a base and a beam fixed on the base, the translation structure between the support table and the rack comprises a horizontal transverse guide rail and a horizontal longitudinal guide rail, and the support table is connected to the base through the horizontal transverse guide rail and the horizontal longitudinal guide rail so as to enable the support table to horizontally move transversely and horizontally move longitudinally; the translation structure between the tool rack and the rack comprises a vertical guide rail, and the tool rack is connected to the cross beam through the vertical guide rail so that the tool rack can move up and down.

In the three-dimensional engraving machine, the vertical guide rail is arranged in the middle of the cross beam, the vertical guide rail is connected with the vertical towing bracket in a sliding manner, and the cutter frame is rotatably connected to the vertical towing bracket.

In the three-dimensional engraving machine, two groups of vertical guide rails are arranged at two ends of the cross beam respectively, vertical brackets are arranged on each group of vertical guide rails, and two ends of the cutter frame are rotatably connected to the corresponding vertical brackets respectively.

In the three-dimensional engraving machine, the rack comprises a base and a beam fixed on the base, the translation structure between the support table and the rack comprises a horizontal longitudinal guide rail, and the support table is connected to the base through the horizontal longitudinal guide rail so as to enable the support table to horizontally and longitudinally move; the translation structure between the tool rack and the rack comprises a vertical guide rail and a horizontal transverse guide rail, and the tool rack is connected to the cross beam through the vertical guide rail and the horizontal transverse guide rail so that the tool rack can move up and down and move horizontally and transversely.

In foretell three-dimensional engraver, perpendicular guide rail fixed and perpendicular guide rail on sliding connection have perpendicular carriage, horizontal cross rail set up on perpendicular carriage, sliding connection has horizontal carriage on horizontal cross rail, the both ends of tool holder or then the middle part rotate to be connected on horizontal carriage.

In foretell three-dimensional engraver, horizontal cross rail and crossbeam fixed and sliding connection have horizontal bracket on horizontal cross rail, perpendicular guide rail set up on horizontal bracket, sliding connection has perpendicular bracket on perpendicular guide rail, the both ends or the middle part of toolframe rotate to be connected on perpendicular bracket.

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

1. this three-dimensional engraver's workstation uses the bar direction of workstation to carry out the fore-and-aft swing or rotate and alternate first position and second position as the axle center, when processing thick and long work piece, commutate the workstation to the second position, the cooperation adds the holder and grasps thick and long work piece in the horizontal direction, when processing short and small work piece, the workstation commutates first position, the workstation and the rotatory locating component of cooperation swing state, six engravers of having formed the multiple-cutter head, and has very big application scope.

2. The tool bits of different orientations on the tool rest can select the required tool bit as long as swing tool rest, carry out the tool changing sculpture, and efficiency improves to carving at a tool bit, and the removal and the swing of work piece can not disturbed to all the other tool bits, make the swing angle of work piece can the grow, improve the application scope of single tool bit, improve machining efficiency.

Drawings

Fig. 1 is a schematic perspective view of a three-dimensional engraving machine according to an embodiment.

Fig. 2 is a structural schematic view of a clamping state formed by the workbench and the clamping piece when the workbench is at the second position.

Fig. 3 is a structural diagram of a state that a handle is adopted to drive the clamping piece to clamp.

Fig. 4 is a perspective view of fig. 1 from another perspective.

Fig. 5 is a top view of fig. 1.

Fig. 6 is a schematic sectional structure view of a-a in fig. 5.

Fig. 7 is a schematic perspective view of a three-dimensional engraving machine according to the second embodiment.

FIG. 8 is a schematic perspective view of a support table of the three-dimensional engraving machine of the embodiment with a portion removed.

FIG. 9 is a schematic perspective view of a support table with a portion removed according to the fourth embodiment of the disclosure.

Fig. 10-12 are schematic views of four different positioning assemblies.

In the figure, 1, a frame; 1a, a base; 1b, a cross beam; 1c, a column; 2. a support table; 2a, a supporting seat; 2b, a bracket base; 2c, a first motor; 2d, a speed reducer; 2e, a bearing; 2f, a slide rail; 3. a tool holder; 3a, a cutter head; 3b, engraving a cutter group; 4. a work table; 4a, a strip-shaped plate; 4b, a connecting plate; 4c, a turntable; 4d, positioning components; 4d1, suction holes; 4d2, airway; 4d3, pawl; 5. a clamping member; 5a, a tip; 5b, a center frame; 5c, a cylinder; 5d, a handle; 6a, a horizontal longitudinal guide rail; 6b, horizontal cross guide rails; 6c, vertical guide rails; 7. a longitudinal towing bracket; 8. a vertical towing bracket; 8a, a mounting seat; 8b, a gear set; 8c, a motor; 8d, a speed reducer; 8e, a bearing seat; 8f, a motor; 9. a power source; 9a, a second motor; 9b, a speed reducer; 9b1, drive shaft; 9b2, output shaft; 10. a transverse towing bracket.

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.

The first embodiment is as follows:

FIG. 1 shows a multi-blade six-axis three-dimensional engraving machine, which comprises a frame 1, a support table 2 and a strip-shaped tool holder 3 are arranged on the frame 1, a translation structure is arranged between the support table 2 and the tool holder 3 and the frame 1 respectively to enable the tool holder 3 to be opposite to the support table 2, a plurality of tool bits 3a are arranged on the tool holder 3 and can swing by taking the strip-shaped direction of the tool holder 3 as an axis, a strip-shaped worktable 4 for clamping a workpiece is arranged on the support table 2, the worktable 4 is arranged in parallel with the tool holder 3 and can swing by taking the strip-shaped direction of the worktable 4 as the axis to enable the worktable 4 to be changed between a first position and a second position, a plurality of rotatable turntables 4c are arranged on the upper side of the worktable 4, positioning assemblies 4d for positioning the workpiece are arranged on the turntables 4c, clamping members 5 which can be in the same number and are opposite to the positioning assemblies 4d are arranged on the support, the positioning component 4d cooperates with the clamping piece 5 to clamp the workpiece when the workbench is at the second position.

Specifically, as shown in fig. 1 and fig. 2-6, the frame 1 includes a base 1a and a cross beam 1b, the cross beam 1b is fixed at the middle rear portion of the base 1a through two vertical posts 1c, the support platform 2 is located below the cross beam 1b and connected to the base 1a, a horizontal longitudinal rail 6a is fixed on the base 1a, a longitudinal bracket 7 is slidably connected to the horizontal longitudinal rail 6a, a horizontal transverse rail 6b is fixedly connected to the longitudinal bracket 7, and the support platform 2 is slidably connected to the horizontal transverse rail 6 b. As a simple alternative, it is also possible to connect the horizontal cross rails 6b and the horizontal longitudinal rails 6a on the base 1a interchangeably, i.e. the support table 2 is connected to the base 1a by the horizontal cross rails 6b and the horizontal longitudinal rails 6a so that the support table 2 can move horizontally laterally and horizontally longitudinally. The longitudinal bracket 7 may be a strip-shaped plate or an H-shaped bracket, and the driving mechanism for driving the longitudinal bracket 7 and the support platform 2 to move may be a screw rod driving mechanism, a gear rack mechanism or an air cylinder.

Crossbeam 1b middle part has linked firmly perpendicular guide rail 6c through the mounting panel, and sliding connection has perpendicular carriage 8 on perpendicular guide rail 6c, and perpendicular carriage 8 is bar platelike or H shape support, and 3 swing connections of tool rack are on perpendicular carriage 8, and tool rack 3 makes tool rack 3 can reciprocate on crossbeam 1b through perpendicular guide rail 6c connection promptly. The outer side of the vertical towing bracket 8 is provided with a mounting seat 8a, the middle part of the tool rack 3 is connected on the vertical towing bracket 8 through a bearing, the vertical towing bracket 8 is provided with a gear set 8b for driving the tool rack 3 to swing, and the gear set 8b is driven by a motor 8c through a speed reducer 8 d. Alternatively, a belt, a chain, or other transmission structure may drive the tool rack 3 to rotate.

The cutter frame 3 is in a long strip shape and can be made into a square section or a round section, the square section is adopted in the embodiment, a plurality of cutter heads 3a are arranged on the cutter frame 3 at intervals, and at least two adjacent cutter heads 3a have different orientations. It can be made in four different orientations as shown in fig. 1, where a tool spindle penetrates the tool holder 3 to form two tool bits 3a at both ends of the tool spindle, and adjacent tool spindles are perpendicular to the tool spindle and also penetrate the tool holder 3 to form two tool bits 3a, and the two tool spindles jointly form a group of engraving tool groups 3b for machining the same workpiece, so that four tool bits 3a can machine the workpiece. The engraving blocks 3b are arranged in several groups in sequence on the tool holder 3, and the number of the engraving blocks 3b is generally determined according to the number of the rotary discs 4 c. The tool bits 3a in different directions can select the required tool bit 3a only by swinging the tool rest 3, so that tool changing and carving can be carried out, and the efficiency is improved. It is also possible to simplify the engraving knife group 3b, for example to three or two in four cutting heads 3a, etc.

The workbench 4 comprises a strip-shaped plate 4a and connecting plates 4b connected to two ends of the strip-shaped plate 4a, and the connecting plates 4b and the strip-shaped plate 4a can be of an integrated structure or a split welding structure. The rotary table 4c is rotatably connected to the strip-shaped plate 4a, a workpiece positioning component 4d is arranged on the rotary table 4c and used for positioning a workpiece, and the positioning component 4d is a clamping piece, a jacking piece, an air suction accessory or is directly used for bonding the workpiece on the rotary table 4c through glue. The specific positioning component 4d is an air suction accessory as shown in fig. 10, a rotary table 4c is provided with an air suction hole 4d1 and an air channel 4d2 arranged on the upper surface of the rotary table 4c, or a clamping piece as shown in fig. 11, the rotary table 4c is provided with a plurality of clamping jaws 4d3, the clamping jaws 4d3 clamp the workpiece to position, or a jacking piece as shown in fig. 12, the rotary table 4c is provided with a T-shaped groove, a compression bolt is connected in the T-shaped groove, and a compression plate is connected on the compression bolt through threads. A power source 9 for driving the positioning component to rotate is arranged on the lower side of the strip-shaped plate 4a of the workbench 4. The power source 9 comprises a second motor 9a and a speed reducer 9b arranged below each workpiece positioning assembly 4d, each speed reducer 9b comprises a horizontally arranged transmission shaft 9b1 and an output shaft 9b2 perpendicular to the transmission shaft 9b1, the output shafts 9b2 are connected with the positioning assemblies, the transmission shafts 9b1 of two adjacent speed reducers 9b are coaxially connected, and the second motor 9a is connected with the transmission shafts 9b1 of the speed reducers 9b at the end parts. As a simple alternative, the power source 9 may also be a third motor disposed below each positioning assembly, with the output shaft 9b2 of each third motor being connected to the workpiece positioning assembly 4 d.

Two supporting seats 2a are arranged on the supporting table 2, the workbench 4 is arranged between the two supporting seats 2a, a connecting sleeve or a rotating shaft is arranged on the outer side of the upper end of a connecting plate 4b, the connecting plates 4b at two ends of the workbench 4 are connected to the supporting seats 2a in a swinging mode through bearings 2e, and a motor 2c used for driving the workbench 4 to swing is arranged on the outer side of one supporting seat 2 a. The first motor 2c is fixed on the bracket base 2b, and the first motor 2c is connected with the connecting plate 4b through the speed reducer 2 d.

The clamping part 5 is a centre 5a, a long-strip-shaped centre frame 5b which can be close to or far away from the workbench is connected on the supporting platform 2 in a sliding mode, the centre 5a is arranged on the centre frame 5b, a sliding rail 2f which is arranged on the supporting platform 2 along the horizontal direction is arranged on the supporting platform 2, the centre frame 5b is connected on the sliding rail 2f in a sliding mode through a sliding block 5b1, and a locking structure which is fixed after the centre frame 5b slides is arranged between the centre frame 5b and the supporting platform 2. The locking structure comprises a fastener, the top frame 5b is connected to the sliding rail 2f in a sliding mode, the fastener is connected to the top frame 5b through threads, and the fastener can abut against the sliding rail by rotating the fastener. Besides the locking structure, the locking structure comprises a bolt, a plurality of jacks which are arranged in a straight line are arranged on the slide rail, and the tip holder 5b is locked on the slide rail through the bolt.

The outer end of the centre 5a is of a spine structure, the spine structure can be a single conical spine or a disc-shaped structure with a plurality of spines, the centre 5a is connected to the centre frame 5b in a sliding mode, and the cylinder 5c or the handle 5d drives the centre 5a to extend outwards so that the outer end of the centre 5a is matched with the workbench 4 to form clamping.

When the workbench 4 is at the first position, a multi-cutter six-axis engraving machine is formed, a workpiece is positioned on the positioning component 4d of the rotary table 4c, and when engraving and milling are performed, according to the setting of a program, the tool rest 3 swings to select one cutter head 3a to face the workpiece, and the tool rest 3, the workbench 4 and the rotary table 4c are controlled to swing in a coordinated manner, so that the cutter head 3a can make any spatial arc and reach any angle when engraving the workpiece, and the precision is very high. When the workbench 4 is located at the second position, the workbench 4 does not rotate and serves as a part of the clamping assembly, and the workpiece is clamped by matching with the clamping piece, so that the multi-cutter five-axis engraving machine is formed, and the application range is improved.

Example two

The second embodiment is basically the same as the first embodiment, except that: the support table 2 is connected to the base 1a through a horizontal longitudinal guide 6a so that the support table 2 can move horizontally and longitudinally, and the tool rest 3 is connected to the cross beam 1b through a vertical guide 6c and a horizontal transverse guide 6b so that the tool rest 3 can move up and down and horizontally and transversely. Specifically, as shown in fig. 7, the horizontal transverse guide rail 6b is fixed to the cross beam 1b, a strip-shaped plate-shaped transverse towing bracket 10 is slidably connected to the horizontal transverse guide rail 6b, the vertical guide rail 6c is disposed on the transverse towing bracket 10, the vertical towing bracket 8 is slidably connected to the vertical guide rail 6c, the vertical towing bracket 8 is formed into a strip-shaped plate shape, or may be H-shaped, two convex bearing seats 8e are disposed on the vertical towing bracket 8, two ends of the tool rack 3 are rotatably connected to the bearing seats 8e of the vertical towing bracket 8, and the motor 8f is connected to the end of the tool rack 3 through the speed reducer 8d, or the middle of the tool rack 3 is rotatably connected to the mounting seat 8a of the vertical towing bracket 8. A horizontal vertical guide rail 6a is fixed to the base 1a, and the support base 2 is slidably connected to the horizontal vertical guide rail 6 a. Alternatively, the vertical guide rail 6c is fixed with the cross beam 1b, the vertical guide rail 6c is connected with a vertical towing bracket 8 in a sliding mode, the horizontal transverse guide rail 6b is arranged on the vertical towing bracket 8, the horizontal transverse guide rail 6b is connected with a transverse towing bracket 10 in a sliding mode, and two ends of the tool rack 3 are rotatably connected to the transverse towing bracket 10 or the middle of the tool rack 3 is rotatably connected to the transverse towing bracket.

Example three:

the third embodiment is basically the same as the first embodiment, except that: as shown in fig. 8, two sets of vertical guide rails 6c are respectively disposed on the vertical columns at the two ends of the cross beam 1b, a vertical bracket 8 is disposed on each set of vertical guide rails 6c, and the two ends of the tool rack 3 are respectively rotatably connected to the corresponding vertical brackets 8.

Example four:

the fourth embodiment is basically the same as the second embodiment, except that: as shown in fig. 9, two sets of vertical guide rails 6c are provided on the vertical columns at the two ends of the cross beam 1b, respectively, a vertical bracket 8 is provided on the two sets of vertical guide rails 6c, a horizontal cross guide rail 6b is horizontally and transversely fixed on the vertical bracket 8, a horizontal bracket 10 is slidably connected on the horizontal cross guide rail 6b, and the two ends of the tool rack 3 are rotatably connected to the horizontal bracket 10 or the middle part of the tool rack 3 is rotatably connected to the horizontal bracket 10.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A three-dimensional engraving machine comprises a frame (1), wherein a support table (2) and a strip-shaped tool rest (3) are arranged on the frame (1), a plurality of tool bits (3a) are arranged on the tool rest (3), a translation structure is arranged between the support table (2) and the tool rest (3) and the frame (1) respectively to enable the tool rest (3) to form three-dimensional translation relative to the support table (2), a strip-shaped worktable (4) is arranged on the support table (2), the three-dimensional engraving machine is characterized in that a plurality of groups of positioning components (4d) used for positioning workpieces are arranged on the worktable (4), the worktable (4) and the tool rest (3) are arranged in parallel, clamping pieces (5) which can be the same as the positioning components (4d) in quantity and are opposite in position are arranged on the support table (2), and the worktable (4) can be changed between a first position and a second position, when the workbench (4) is at the second position, the positioning component (4d) is matched with the clamping piece (5) to clamp the workpiece.

2. The stereoengraving machine according to claim 1, characterized in that said tool-holder can oscillate with the bar-shaped direction of the tool-holder (3) as the axis; the plurality of tool bits (3a) are arranged on the tool rest (3) at intervals, and at least two different directions of the tool bits (3a) at the same position are provided.

3. The stereoengraving machine according to claim 1, characterized in that said clamping member (5) is a tip (5a), a long-strip-shaped tip holder (5b) capable of approaching or departing from the worktable (4) is slidably connected on the supporting table (2), said tip (5a) is arranged on the tip holder (5b), and a locking structure for fixing after the tip holder (5b) slides is arranged between the tip holder (5b) and the supporting table (2).

4. The stereolithography machine according to claim 1, characterized in that said holder (5) comprises a tip seat and a tip (5a) arranged on said tip seat, each tip seat being slidably connected to said support table (2) and between each tip seat and said support table (2) a locking structure is provided for fixing after sliding of said tip (5 a).

5. The stereoengraving machine according to any one of claims 1 to 4, characterized in that said table (4) is pivoted back and forth about the bar-shaped direction of the table (4), said positioning element (4d) being able to rotate with respect to the table (4).

6. The stereoengraving machine according to claim 5, characterized in that said table (4) is provided with a plurality of rotatable discs (4c), said positioning element (4d) being provided on said discs (4 c).

7. The stereoengraving machine according to claim 5, characterized in that a plurality of rotatable output shafts are provided on the table (4), said positioning elements (4d) being provided on the output shafts.

8. The stereoengraving machine according to any one of claims 1 to 4, characterized in that said support (2) is provided with two support seats (2a), said table (4) is disposed between said two support seats (2a) and both ends of said table (4) are pivotally connected to said support seats (2a), and a first motor (2c) for driving said table (4) to swing is disposed outside one of said support seats (2 a).

9. The stereoengraving machine according to claim 8, characterized in that said table (4) comprises an elongated strip (4a) and connecting plates (4b) connected to the two ends of the strip (4a), the upper end of the connecting plate (4b) is connected to the supporting base (2a), and a power source (9) for driving the positioning assembly (4d) to rotate is provided at the lower side of the table (4).

10. The stereoengraving machine according to claim 1, characterized in that said frame (1) comprises a base (1a) and a cross beam (1b) fixed on said base (1a), the translation structure between said support table (2) and said frame (1) comprises a horizontal cross rail (6b) and a horizontal longitudinal rail (6a), said support table (2) is connected to said base (1a) through said horizontal cross rail (6b) and said horizontal longitudinal rail (6a) to enable said support table (2) to move horizontally and laterally and horizontally and longitudinally; the translation structure between the tool rack (3) and the rack (1) comprises a vertical guide rail (6c), and the tool rack (3) is connected to the cross beam (1b) through the vertical guide rail (6c) to enable the tool rack (3) to move up and down.

11. The stereoengraving machine according to claim 10, characterized in that said vertical guide (6c) is arranged in the middle of said cross-beam (1b), a vertical carriage (8) is slidably connected to said vertical guide (6c), and said tool holder (3) is rotatably connected to said vertical carriage (8).

12. The stereoengraving machine according to claim 10, characterized in that said vertical guides (6c) are provided in two groups, and are respectively disposed at two ends of said cross-beam (1b), wherein each group of vertical guides (6c) is provided with a vertical bracket (8), and two ends of said tool rack (3) are respectively rotatably connected to the corresponding vertical brackets (8).

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

14. The stereoengraving machine according to claim 13, characterized in that said vertical guide (6c) is fixed to said cross-beam (1b) and said vertical guide (6c) is slidably connected to a vertical carriage (8), said horizontal cross-guide (6b) is disposed on said vertical carriage (8), said horizontal cross-guide (6b) is slidably connected to a horizontal carriage (10), and said two ends or middle of said tool holder (3) are rotatably connected to said horizontal carriage (10).

15. The stereoengraving machine according to claim 13, characterized in that said horizontal cross rail (6b) is fixed to said cross beam (1b) and is slidably connected to a cross carriage (10) on said horizontal cross rail (6b), said vertical rail (6c) is disposed on said cross carriage (10), said vertical carriage (8) is slidably connected to said vertical rail (6c), and both ends or the middle of said tool holder (3) are rotatably connected to said vertical carriage (8).