CN115070464A - Novel high-efficient cnc engraving and milling machine - Google Patents

Abstract

The application relates to a novel efficient engraving and milling machine, which comprises a machine tool main body, wherein the machine tool main body is provided with a workbench for placing a workpiece to be machined; the working table is provided with a sliding groove along the length direction of the working table, and the working table is provided with a sliding groove along the width direction of the working table; the inner side wall of the sliding groove and the inner side wall of the sliding groove are connected with two clamping plates for clamping a workpiece to be processed in a sliding manner; connecting components are connected between the two clamping plates positioned in the sliding groove and between the two clamping plates positioned in the sliding groove, and the connecting components are used for driving the two corresponding clamping plates to synchronously approach to each other or synchronously move away from each other; a fixing piece for fixing the clamping plate is arranged between the clamping plate and the workbench. All the clamping plates are matched with each other, so that the workpieces can be automatically centered, the centers of the corresponding workpieces are automatically aligned with the center of the workpiece machined in the previous step, the operation of resetting X, Y coordinates of the original point of the workpiece coordinate system is reduced, and the debugging efficiency of the machine tool is improved.

Description

A new type of high-efficiency engraving machine

technical field

The present application relates to the technical field of cutting processing equipment, and in particular, to a novel high-efficiency engraving machine.

Background technique

As a kind of CNC cutting equipment, the engraving machine has the characteristics of high machining accuracy and wide application range.

A fine engraving machine, referring to FIG. 1, includes a machine tool main body 1, the machine tool main body 1 is provided with a main shaft 11 and a worktable 2; the axial direction of the main shaft 11 is arranged in the up and down direction; the main shaft 11 can move up and down and the main shaft 11 can revolve around its own axis Rotation; the worktable 2 is located below the main shaft 11 , and the worktable 2 can move along the length and width directions of the machine tool body 1 . When using the engraving machine to process the workpiece, the tool is installed on the lower end of the main shaft 11, and the workpiece to be processed is clamped on the worktable 2; The position directly below; at this time, the coordinates displayed by the engraving machine are set as the X and Y coordinates of the origin of the workpiece coordinate system; then set the Z coordinate of the origin of the workpiece coordinate system according to the thickness of the workpiece; finally start Engraving machine, so that the engraving machine can process the workpiece according to the preset program.

In view of the above-mentioned related technologies, the inventor believes that when setting the origin coordinates of the workpiece coordinate system, it is necessary to manually and slowly control the worktable, which is cumbersome and leads to low debugging efficiency of the engraving machine, so it needs to be improved.

SUMMARY OF THE INVENTION

The purpose of this application is to provide a new type of high-efficiency engraving machine to improve the problem of low debugging efficiency of the engraving machine.

A novel high-efficiency engraving machine provided by the application adopts the following technical solutions:

A novel high-efficiency engraving machine includes a machine tool main body, which is provided with a worktable for placing workpieces to be processed; the worktable is provided with a sliding groove along its own length direction, and the worktable is provided along its own width direction There is a sliding groove; the inner side wall of the sliding groove and the inner side wall of the sliding groove are both slidably connected with two clamping plates for clamping the workpiece to be processed; located between the two clamping plates of the sliding groove A connecting assembly is connected between the two clamping plates located in the sliding groove, and the connecting assembly is used to drive the corresponding two clamping plates to approach or move away from each other synchronously; A fixing piece for fixing the clamping plate is arranged between them.

By adopting the above technical solution, after placing the workpiece to be processed on the worktable, slide the clamping plate to make the clamping plate abut against the side wall of the workpiece; the two clamping plates in the sliding groove approach the workpiece synchronously , so that the workpiece moves to the center position between the corresponding two clamping plates along the length direction of the worktable; the two clamping plates in the sliding groove approach the workpiece simultaneously, so that the workpiece moves along the width direction of the worktable to The center position between the corresponding two clamping plates, so that the center of the workpiece coincides with the center of the area enclosed by the four clamping plates. When machining workpieces of different sizes, all the clamping plates cooperate with each other, so that the workpiece can be automatically centered, so that the center of the corresponding workpiece is automatically aligned with the center of the previous workpiece, so there is no need to re-adjust the machine tool and reset the workpiece. The X and Y coordinates of the origin of the coordinate system only need to adjust the Z coordinate of the origin of the workpiece coordinate system according to the thickness of the workpiece; the operation of resetting the X and Y coordinates of the origin of the workpiece coordinate system is reduced, and the operation is simpler and Labor saving is beneficial to shorten the debugging time of the machine tool, thereby improving the debugging efficiency of the machine tool, so as to improve the processing efficiency of the machine tool. After the clamping plate clamps the workpiece, the clamping plate is fixed by the fixing member, and the workpiece to be processed can be fixed. The structure is simple and the operation is convenient.

Optionally, the connecting assembly includes a connecting gear rotatably connected to the worktable and a connecting rack located on both sides of the connecting gear; the connecting racks correspond to the clamping plates one-to-one, and each connecting rack is It is fixedly connected with the clamping plate; both of the connecting racks are engaged with the connecting gears.

By adopting the above technical solution, when one of the clamping plates moves, the clamping plate can drive the corresponding connecting rack to move, so as to drive the connecting gear to rotate, so as to drive the other connecting rack and the clamping plate to move, thereby realizing two The clamping plates are synchronously approaching each other or synchronously moving away from each other.

Optionally, the two connecting gears are both connected with a rotating shaft, and the rotating shaft is rotatably connected with the worktable; the rotating shaft is slidingly connected with a fixed sleeve along its own axial direction, and the outer peripheral wall of the fixed sleeve is connected to the working table. Threaded connection.

By adopting the above technical solution, the connecting gear can be driven to rotate by rotating the rotating shaft, so as to drive the corresponding two clamping plates to approach or move away from each other; The contact area is large, which is beneficial to increase the friction between the rotating shaft and the worktable; when the clamping plate is in contact with the workpiece to be processed, the rotating shaft stops rotating, and the rotating shaft can pass the friction between itself and the worktable. The force remains stationary to reduce the possibility of the clamping plate being disengaged from the workpiece, thereby facilitating the fasteners to lock the clamping plate so that the clamping plate clamps the workpiece.

Optionally, the worktable is rotatably connected with a drive shaft, the drive shaft is connected with two transmission shafts, and the two transmission shafts are both rotatably connected with the worktable; the drive shaft can drive the two transmission shafts to rotate synchronously ; The transmission shaft is in one-to-one correspondence with the rotating shaft, and a transmission assembly is connected between each of the transmission shaft and the corresponding rotating shaft; when the rotating shaft is blocked and stops rotating, the transmission shaft can continue to rotate.

By adopting the above technical solution, when clamping the workpiece, the drive shaft can be directly rotated to drive the two transmission shafts to rotate, thereby driving the two rotating shafts to rotate, so as to drive all the clamping plates to move toward the workpiece; when one of the clamping plates is clamped When the plate is in contact with the workpiece, the corresponding rotating shaft stops rotating; at this time, the driving shaft continues to rotate to drive the other rotating shaft to rotate until all the clamping plates are in contact with the workpiece, and the operation is simpler and more convenient.

Optionally, the transmission assembly includes a fixed plate that is fixedly connected to the rotating shaft and a sliding plate that is slidably connected to the transmission shaft along the axial direction of the transmission shaft; the sliding plate is provided with a transmission protrusion extending in the direction of the fixed plate, The fixed plate is provided with a fixed groove that is inserted and matched with the transmission protrusion; both sides of the transmission protrusion along the circumferential direction of the transmission shaft are provided with guide surfaces obliquely; the sliding plate and the transmission shaft are connected with An elastic connecting piece that drives the sliding plate to move in the direction of the fixed plate.

By adopting the above technical solution, when the rotating shaft is blocked and stops rotating, when the driving shaft continues to exert force on the transmission shaft, the transmission protrusion exerts a force on the inner side wall of the fixing groove, and the inner side wall of the fixing groove has a reverse effect on the guide surface force to drive the sliding plate to move away from the fixed plate, so that the transmission protrusion is disengaged from the fixed groove, so that the transmission shaft continues to rotate.

Optionally, the two connecting gears are arranged in sequence in the up and down direction; the connecting gear located at the top is coaxially connected with an upper fixed shaft, and the connecting gear located at the bottom is coaxially connected with a lower fixed shaft, and the lower fixed shaft is coaxially connected. The shaft is rotatably connected to the worktable; the upper end wall of the lower fixed shaft is provided with a rotating hole downward, the upper fixed shaft is inserted in the rotating hole, and the upper fixed shaft is rotatably connected with the inner side wall of the rotating hole.

By adopting the above technical solution, the two connecting gears are arranged in sequence along the upper and lower directions, which is beneficial to make the two sets of clamping plates clamped at the corresponding central positions of the workpiece, thereby helping to improve the uniformity of the force on each side of the workpiece , at the same time, it is beneficial to increase the size range of the workpiece to be processed and improve the applicability.

Optionally, the clamping plate is slidingly connected along its own sliding direction with an abutment block for abutting with the side wall of the workpiece to be processed; the clamping plate is slidingly connected with a connecting block in the up-down direction, and the The connection block is provided with an insertion hole for inserting one end of the abutment block; the connection block is provided with a limit block for abutting with the upper surface of the workpiece to be processed; a driving surface abutting against the inner sidewall of the lower side of the contact hole; the contact block is connected with an elastic contact piece for driving the contact block to move in a direction away from the insertion hole.

By adopting the above technical solution, when the clamping plate approaches the workpiece, the abutting block first abuts against the side wall of the workpiece, so that the driving surface pushes against the inner side wall of the lower side of the insertion hole to drive the connecting block downward move, so as to drive the limit block to move down to press against the upper surface of the workpiece. When the clamping plate moves away from the workpiece, the abutment block is disengaged from the insertion hole, so as to reduce the interaction force between the limit block and the workpiece, so as to facilitate the separation of the limit block and the workpiece, so as to facilitate clamping movement of the board.

Optionally, the inner side wall of the insertion hole is provided with a fitting surface for fitting with the driving surface.

By adopting the above technical solution, the abutting surface and the driving surface cooperate with each other, so that the contact area between the abutting block and the connecting block can be increased, and the interaction force between the abutting block and the connecting block can be reduced, thereby facilitating the contact between the abutting block and the connecting block. Relative movement between the connecting blocks, so that the abutting blocks drive the connecting blocks to move.

Optionally, an elastic pushing member for driving the connecting block to move upward is provided between the connecting block and the clamping plate.

By adopting the above technical solution, when the abutting block is disengaged from the insertion hole, the elastic abutting member moves on the workpiece.

Optionally, the connecting block is slidingly connected with a docking rod in an up-down direction, and the connecting block is provided with a locking member for fixing the docking rod; and the limiting block is fixedly connected with the docking rod.

By adopting the above technical solution, the butt rod can be adjusted up and down relative to the connecting block to adjust the distance between the limit block and the upper surface of the worktable, so as to be suitable for clamping workpieces with different thicknesses.

To sum up, the present application includes at least one of the following beneficial technical effects:

1. When machining workpieces of different sizes, all the clamping plates cooperate with each other, so that the workpiece can be automatically centered, so that the center of the corresponding workpiece is automatically aligned with the center of the previous workpiece, so there is no need to reset the workpiece coordinate system. The X and Y coordinates of the origin of the machine are easy to operate and labor-saving, thereby improving the debugging efficiency of the machine tool;

2. The drive shaft, transmission shaft and transmission components cooperate with each other to drive all the clamping plates to move, with simple structure and convenient operation;

3. During the process of the clamping plate approaching the workpiece, the abutting block first abuts the side wall of the workpiece, so that the driving surface pushes against the inner side wall of the lower side of the insertion hole to drive the connecting block to move downward, thereby driving the The stopper moves downward to abut against the upper surface of the workpiece, thereby further securing the workpiece.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a fine engraving machine in the related art.

FIG. 2 is a schematic diagram of the overall structure of a novel high-efficiency engraving machine according to an embodiment of the present application.

FIG. 3 is a schematic view of the structure for showing the workbench.

FIG. 4 is an enlarged view of part A in FIG. 3 .

FIG. 5 is a schematic cross-sectional view taken along the line B-B in FIG. 4 .

FIG. 6 is a schematic cross-sectional view taken along line C-C in FIG. 3 .

FIG. 7 is an exploded schematic diagram for showing the connection structure between the clamping plate and the worktable.

FIG. 8 is an enlarged view of part D in FIG. 6 .

FIG. 9 is an exploded schematic diagram for showing the structure of the transmission assembly.

In the figure, 1. Main body of machine tool; 11. Spindle; 2. Worktable; 21. Sliding slot; 22. Sliding slot; 23. Receiving slot; 24. Receiving slot; , give way slot; 26, mounting block; 261, drive screw hole; 27, drive shaft; 28, drive shaft; 281, limit ring; 282, elastic connecting piece; 3, clamping plate; 31, fixing block; 311 312, threaded hole; 32, limit bar; 321, limit slot; 33, connecting block; 331, plug hole; 3311, fitting surface; 332, guide hole; 34, receiving plate; 341, Elastic pushing piece; 35, sliding hole; 351, abutting block; 3511, driving surface; 3512, extension block; 352, extension groove; 3521, elastic abutting piece; 36, locking piece; 4, limit block ; 41, docking rod; 5, connecting assembly; 51, connecting gear; 511, upper fixed shaft; 512, lower fixed shaft; 5121, rotating hole; 52, connecting rack; 6, transmission turbine; 61, transmission worm; 611 , rotating shaft; 6111, transmission key; 612, fixed sleeve; 6121, transmission groove; 7, transmission assembly; 71, fixed plate; 711, fixed groove; 72, sliding plate; 721, transmission protrusion; 7211, guide surface .

Detailed ways

The present application will be described in further detail below with reference to Figures 2 to 9 .

A new type of high-efficiency engraving machine, referring to FIG. 2 , includes a machine tool main body 1 , and the machine tool main body 1 is provided with a main shaft 11 and a worktable 2 . The worktable 2 is used to clamp the workpiece to be processed; the main shaft 11 is used to install the tool to process the workpiece to be processed.

Referring to FIG. 3 , the upper surface of the workbench 2 is provided with a sliding groove 21 along the length direction of the workbench 2 itself; in this embodiment, each end of the sliding groove 21 communicates with the end wall of the corresponding end of the workbench 2 , and the worktable 2 is located in the middle of the length direction of the sliding groove 21 and is integrally formed with a filling block, and the filling block divides the sliding groove 21 into two sections. The upper surface of the worktable 2 is provided with a sliding groove 22 along the width direction of the worktable 2 itself; A filling block is integrally formed at the middle position of the sliding groove 22 , and the filling block divides the sliding groove 22 into two sections.

Referring to FIG. 3 , the sliding groove 21 is located at the center position of the worktable 2 along its own width direction, and the sliding groove 22 is located at the center position of the worktable 2 along its own length direction. The inner side walls of each sliding groove 21 and each sliding groove 22 are slidably connected with the clamping plate 3; when clamping the workpiece, place the workpiece to be processed in the area enclosed by the four clamping plates 3; The two clamping plates 3 in the sliding groove 21 can clamp both ends of the workpiece along the length direction of the workpiece itself, and the two clamping plates 3 located in the sliding groove 22 can clamp the workpiece along the width direction of the workpiece itself. to clamp the workpiece to be processed. In another embodiment, the two sections of the sliding grooves 21 are in penetrating communication with each other, and the two sliding grooves 22 are in penetrating communication with each other.

Referring to FIGS. 3 and 4 , a side wall of each clamping plate 3 in a direction away from the opposite clamping plate 3 is welded and fixed with a fixing block 31 , and the fixing block 31 is provided with a fixing member 311 . In this embodiment, the fixing member 311 includes a screw; the upper surface of the fixing block 31 is provided with a threaded hole 312 downward, and the fixing member 311 is threadedly connected to the inner side wall of the threaded hole 312 . After the clamping plate 3 is moved to contact with the workpiece, the fixing member 311 is rotated to make the lower end of the fixing member 311 abut against the upper surface of the table 2 to fix the clamping plate 3 and the workpiece to be processed.

Referring to FIG. 4 , the clamping plate 3 is welded and fixed to the limiting strip 32 , and the limiting strip 32 and the fixing block 31 are located on the same side of the clamping plate 3 . The mutually facing side walls of the two limiting bars 32 are both provided with limiting grooves 321 along the up-down direction, and the inner side walls of the two limiting grooves 321 are slidably connected with the connecting block 33 . A receiving plate 34 is welded and fixed to the position of the clamping plate 3 below the connecting block 33 , and an elastic pushing member 341 is provided on the upper surface of the receiving plate 34 . In this embodiment, the elastic pushing member 341 includes a rubber pad, the lower surface of the rubber pad is bonded and fixed with the upper surface of the receiving plate 34 , and the upper surface of the rubber pad is in contact with the lower end wall of the connecting block 33 to support the connecting block 33 . In another embodiment, the elastic resisting member 341 may also be a spring.

4 and 5 , the side wall of the side wall of the clamping plate 3 away from the fixing block 31 is provided with a sliding hole 35 along the sliding direction of the clamping plate 3 itself, and the inner side wall of the sliding hole 35 is slidably connected and abutted. For the block 351 , both ends of the abutting block 351 are located outside the sliding hole 35 . The side wall of the connecting block 33 facing the abutting block 351 is provided with an insertion hole 331 along the longitudinal direction of the sliding hole 35, and the inner side wall of the lower side of the mouth of the insertion hole 331 is inclined with a fitting surface 3311; The lower side of the end wall of the block 351 close to one end of the insertion hole 331 is obliquely provided with a driving surface 3511 . The driving surface 3511 is attached to the bonding surface 3311; when the clamping plate 3 moves to the contact block 351 and the workpiece abuts, the workpiece can drive the contact block 351 to move in the direction of the insertion hole 331 to drive the connection block 33 to move down , and at the same time, the elastic pushing member 341 is compressed. The upper end of the connection block 33 is connected with a limit block 4, and the limit block 4 can move down with the connection block 33 to press the workpiece, thereby further fixing the workpiece.

Referring to FIG. 4 , a butt rod 41 is disposed between the limit block 4 and the connection block 33 , one end of the butt rod 41 is welded and fixed to the lower surface of the limit block 4 , and the other end extends downward. The upper end wall of the connecting block 33 is provided with a guide hole 332 downward; the lower end of the straw is inserted into the guide hole 332, and the outer peripheral wall of the butt rod 41 is slidingly connected with the inner side wall of the guide hole 332, so as to adjust the limit block 4 The distance from the upper surface of the table 2. The clamping plate 3 is provided with a locking member 36; in this embodiment, the locking member 36 comprises a screw, the locking member 36 is threadedly connected with the clamping plate 3, and one end of the locking member 36 extends into the guide hole 332 to Abut the docking rod 41 to fix the docking rod 41 and the limit block 4 .

Referring to FIG. 5 , an extension block 3512 is welded and fixed to the side wall of the abutment block 351 ; An elastic abutting member 3521 is disposed in the extending groove 352; in this embodiment, the elastic abutting member 3521 is a spring; in another embodiment, the elastic abutting member 3521 may also be a rubber pad. One end of the elastic abutting member 3521 is in contact with the limiting block 4, and the other end is in contact with the inner wall of the end of the extension groove 352 close to the insertion hole 331; when the clamping plate 3 moves away from the workpiece, the elastic abutting The connecting piece 3521 can push the abutting block 351 in a direction away from the insertion hole 331 , so that the elastic pushing piece 341 pushes the connecting block 33 upward to separate the limiting block 4 from the workpiece, thereby facilitating the movement of the clamping plate 3 .

Referring to FIGS. 6 and 7 , connecting components 5 are connected between the two clamping plates 3 located in the sliding groove 21 and between the two clamping plates 3 located in the sliding groove 22 . The connecting assembly 5 includes a connecting gear 51 and connecting racks 52 located on both sides of the connecting gear 51; the connecting racks 52 are in one-to-one correspondence with the clamping plates 3, and the length direction of each connecting rack 52 is along the corresponding clamping plate. The sliding direction of 3 is set, and one end of each connecting rack 52 away from the connecting gear 51 is welded and fixed with the corresponding clamping plate 3 . The worktable 2 is provided with a receiving groove 23 at the position of each connecting rack 52 for embedding the corresponding connecting rack 52 . The two connecting racks 52 are meshed with the connecting gear 51. When the connecting gear 51 rotates, the connecting rack 52 can drive the corresponding two clamping plates 3 to approach or move away from each other synchronously.

Referring to FIGS. 6 and 7 , an accommodating groove 24 is opened downward on the upper surface of the table 2 at the intersection of the sliding groove 21 and the sliding groove 22 . The two connecting gears 51 are sequentially arranged in the accommodating groove 24 along the up-down direction; the two connecting gears 51 have the same number of teeth and are arranged coaxially. The upper connecting gear 51 is coaxially connected to the upper fixed shaft 511 , and the lower connecting gear 51 is coaxially connected to the lower fixed shaft 512 . The lower end of the lower fixed shaft 512 extends downward and penetrates the worktable 2 , and the lower fixed shaft 512 is rotatably connected to the worktable 2 through a bearing. A rotating hole 5121 is formed through the upper end wall of the lower fixed shaft 512 downward; the lower end of the upper fixed shaft 511 is inserted through the lower rotating hole 5121 , and the upper fixed shaft 511 is rotatably connected to the inner wall of the rotating hole 5121 through a bearing. The inner side wall of the upper end of the accommodating groove 24 is provided with a mounting groove 241 along its circumferential direction, and a mounting plate 2411 is placed in the mounting groove 241 .

Referring to FIGS. 6 and 8 , the lower surface of the table 2 is provided with an escape groove 25 along its width direction. The lower ends of the lower fixed shaft 512 and the lower end of the upper fixed shaft 511 are coaxially connected with the transmission turbine 6, and the worktable 2 is located at the position of each transmission turbine 6 and is connected to the transmission worm 61 through the bearing rotation. The axial direction of the transmission worm 61 works along the The table 2 is provided in the width direction, and the transmission worm 61 is engaged with the opposite transmission turbine 6 . Each transmission worm 61 is coaxially connected with a rotating shaft 611, and the rotating shaft 611 is rotatably connected to the table 2 through a bearing. A mounting block 26 is fixedly mounted on the bottom wall of the abdication slot 25 at the position of the rotating shaft 611 by screws. The transmission screw holes 261 are in one-to-one correspondence with the rotating shafts 611 , and one end of each rotating shaft 611 away from the transmission worm 61 is inserted into the corresponding transmission screw hole 261 and extends to the same side of the table 2 .

6 and 8 , the rotating shaft 611 is sleeved with a fixing sleeve 612 , and the outer side wall of the fixing sleeve 612 is threadedly connected to the inner side wall of the transmission screw hole 261 . A transmission key 6111 is fixedly installed on the peripheral wall of the rotating shaft 611 , and the length direction of the transmission key 6111 is arranged along the axial direction of the rotating shaft 611 . A transmission groove 6121 is formed through the inner side wall of the fixed sleeve 612 along its own axial direction; Rotating the rotating shaft 611 can drive the corresponding connecting gear 51 to rotate, and at the same time the rotating shaft 611 can drive the corresponding fixing sleeve 612 to rotate; when the rotating shaft 611 stops rotating, the fixing sleeve 612 is threaded with the transmission screw hole 261 to reduce The possibility of rotation of the small rotation shaft 611.

6 and 9 , the worktable 2 is provided with a drive shaft 27 at a position at one end of the rotating shaft 611 away from the transmission worm 61 , and the drive shaft 27 is rotatably connected to the worktable 2 through a bearing. Two transmission shafts 28 are rotatably provided on the worktable 2 at the position of the drive shaft 27; the drive shaft 27 is connected with the transmission shaft 28 through gear transmission; when the drive shaft 27 is rotated, the two transmission shafts 28 rotate synchronously.

6 and 9 , the transmission shafts 28 and the rotating shafts 611 are in one-to-one correspondence, and a transmission assembly 7 is connected between each transmission shaft 28 and the corresponding rotating shaft 611 , and the transmission assembly 7 includes a fixed plate 71 and a sliding plate 72 . The fixed plate 71 is welded and fixed to the end wall of the rotating shaft 611 ; the sliding plate 72 is sleeved on the outside of the transmission shaft 28 and is keyed to the transmission shaft 28 , and the sliding plate 72 can slide along the axial direction of the transmission shaft 28 . The sliding plate 72 is provided with transmission protrusions 721 . In this embodiment, a plurality of transmission protrusions 721 are sequentially provided along the circumferential direction of the transmission shaft 28 . One end of the transmission protrusion 721 is welded and fixed to the side wall of the sliding plate 72 facing the direction of the fixed plate 71, and the other end extends in the direction of the fixed plate 71; The grooves 711 are for inserting the corresponding transmission protrusions 721 . When the transmission shaft 28 rotates, the transmission protrusion 721 can push against the inner side wall of the fixing groove 711 to drive the corresponding fixing plate 71 and the rotating shaft 611 to rotate. Guide surfaces 7211 are obliquely provided on both side walls of the transmission protrusion 721 along the circumferential direction of the transmission shaft 28 .

Referring to FIG. 9 , the limit ring 281 is fixed by welding on the peripheral wall of the transmission shaft 28 on the side of the sliding plate 72 away from the fixing plate 71 . An elastic connecting member 282 is provided between the sliding plate 72 and the transmission shaft 28 . In this embodiment, the elastic connecting member 282 includes a spring, and the spring is sleeved on the peripheral wall of the transmission shaft 28 . One end of the elastic connecting member 282 is in contact with the side wall of the side of the sliding plate 72 away from the fixed plate 71 , and the other end is in contact with the limit ring 281 to push the sliding plate 72 and reduce the transmission protrusion 721 and the fixing groove. Risk of 711 detachment. During the rotation of the transmission shaft 28, when the rotation shaft 611 is blocked and stops rotating, the reverse force of the inner wall of the fixing groove 711 on the transmission protrusion 721 increases; The limit ring 281 moves in the direction so that the transmission shaft 28 continues to rotate.

The implementation principle of the embodiment of the present application is:

When clamping the workpiece, place the workpiece in the area enclosed by the four clamping plates 3, and make the lower surface of the workpiece fit with the upper surface of the table 2; then, rotate the drive shaft 27 to drive the transmission shaft 28 and The rotation shaft 611 rotates, thereby driving the connecting gear 51 to rotate, so as to drive the clamping plate 3 to approach the workpiece to clamp the workpiece.

When machining workpieces of different sizes, the two opposite clamping plates 3 can approach the workpiece synchronously, so that the workpiece can be automatically moved to the center position between the two clamping plates 3, so that the center of the corresponding workpiece can be moved up and down. The center of the workpiece is automatically coincident, so that it is not necessary to reset the X and Y coordinates of the origin of the workpiece coordinate system, which reduces the operation of resetting the X and Y coordinates of the origin of the workpiece coordinate system, which is beneficial to improve the debugging efficiency of the machine tool, so that To improve the efficiency of the mechanics of machine tools.

The embodiments of this specific implementation manner are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same components are denoted by the same reference numerals. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims (10)

1. A novel high-efficiency engraving and milling machine comprises a machine tool main body (1), wherein the machine tool main body (1) is provided with a workbench (2) for placing a workpiece to be machined; the method is characterized in that: the workbench (2) is provided with a sliding groove (21) along the length direction of the workbench, and the workbench (2) is provided with a sliding groove (22) along the width direction of the workbench; the inner side wall of the sliding groove (21) and the inner side wall of the sliding groove (22) are connected with two clamping plates (3) used for clamping a workpiece to be processed in a sliding mode; the connecting assemblies (5) are connected between the two clamping plates (3) positioned in the sliding groove (21) and between the two clamping plates (3) positioned in the sliding groove (22), and the connecting assemblies (5) are used for driving the two corresponding clamping plates (3) to synchronously approach to each other or synchronously move away from each other; and a fixing piece (311) for fixing the clamping plate (3) is arranged between the clamping plate (3) and the workbench (2).

2. The novel efficient engraving and milling machine as claimed in claim 1, wherein: the connecting assembly (5) comprises a connecting gear (51) rotatably connected with the workbench (2) and connecting racks (52) positioned on two sides of the connecting gear (51); the connecting racks (52) correspond to the clamping plates (3) one by one, and each connecting rack (52) is fixedly connected with the clamping plate (3); the two connecting racks (52) are meshed with the connecting gear (51).

3. The novel efficient engraving and milling machine as claimed in claim 2, wherein: the two connecting gears (51) are both connected with a rotating shaft (611), and the rotating shaft (611) is rotatably connected with the workbench (2); the rotating shaft (611) is connected with a fixing sleeve (612) in a sliding mode along the axial direction of the rotating shaft, and the outer peripheral wall of the fixing sleeve (612) is in threaded connection with the workbench (2).

4. The novel efficient engraving and milling machine as claimed in claim 3, wherein: the workbench (2) is rotatably connected with a driving shaft (27), the driving shaft (27) is connected with two transmission shafts (28), and the two transmission shafts (28) are rotatably connected with the workbench (2); the driving shaft (27) can drive the two transmission shafts (28) to synchronously rotate; the transmission shafts (28) correspond to the rotating shafts (611) one by one, and a transmission assembly (7) is connected between each transmission shaft (28) and the corresponding rotating shaft (611); when the rotating shaft (611) is blocked and stops rotating, the transmission shaft (28) can continue to rotate.

5. The novel efficient engraving and milling machine as claimed in claim 4, wherein: the transmission assembly (7) comprises a fixed plate (71) fixedly connected with the rotating shaft (611) and a sliding plate (72) connected with the transmission shaft (28) in a sliding manner along the axial direction of the transmission shaft (28); the sliding plate (72) is provided with a transmission bulge (721) extending towards the direction of the fixed plate (71), and the fixed plate (71) is provided with a fixed groove (711) which is in inserted connection and matching with the transmission bulge (721); the two sides of the transmission bulge (721) along the circumferential direction of the transmission shaft (28) are respectively provided with a guide surface (7211) in an inclined way; an elastic connecting piece (282) for driving the sliding plate (72) to move towards the direction of the fixed plate (71) is connected between the sliding plate (72) and the transmission shaft (28).

6. The novel efficient engraving and milling machine as claimed in claim 2, wherein: the two connecting gears (51) are sequentially arranged along the vertical direction; the upper connecting gear (51) positioned at the upper part is coaxially connected with an upper fixed shaft (511), the lower connecting gear (51) positioned at the lower part is coaxially connected with a lower fixed shaft (512), and the lower fixed shaft (512) is rotationally connected with the workbench (2); the upper end wall of the lower fixing shaft (512) penetrates downwards to be provided with a rotating hole (5121), the upper fixing shaft (511) is inserted into the rotating hole (5121), and the upper fixing shaft (511) is rotatably connected with the inner side wall of the rotating hole (5121).

7. The novel efficient engraving and milling machine as claimed in claim 1, wherein: the clamping plate (3) is connected with a butting block (351) which is used for butting against the side wall of a workpiece to be processed in a sliding manner along the self sliding direction; the clamping plate (3) is connected with a connecting block (33) in a sliding mode along the vertical direction, and the connecting block (33) is provided with an inserting hole (331) for inserting one end of the abutting block (351); the connecting block (33) is provided with a limiting block (4) which is used for being abutted against the upper surface of a workpiece to be processed; the abutting block (351) is obliquely provided with a driving surface (3511) for abutting against the inner side wall of the lower side of the inserting hole (331); the abutting block (351) is connected with an elastic abutting piece (3521) used for driving the abutting block (351) to move in the direction away from the inserting hole (331).

8. The novel efficient engraving and milling machine as claimed in claim 7, wherein: the inner side wall of the inserting hole (331) is provided with a binding surface (3311) which is used for being bound with the driving surface (3511).

9. The novel efficient engraving and milling machine as claimed in claim 7, wherein: an elastic abutting part (341) used for driving the connecting block (33) to move upwards is arranged between the connecting block (33) and the clamping plate (3).

10. The novel efficient engraving and milling machine as claimed in claim 7, wherein: the connecting block (33) is connected with a butt joint rod (41) in a sliding mode along the vertical direction, and a locking piece (36) used for fixing the butt joint rod (41) is arranged on the connecting block (33); the limiting block (4) is fixedly connected with the butt joint rod (41).

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