CN115070464A

CN115070464A - Novel high-efficient cnc engraving and milling machine

Info

Publication number: CN115070464A
Application number: CN202210774885.5A
Authority: CN
Inventors: 李子俊
Original assignee: Ace Plastics Shenzhen Co Ltd
Current assignee: Ace Plastics Shenzhen Co Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-09-20
Anticipated expiration: 2042-07-01
Also published as: CN115070464B

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

Novel high-efficient cnc engraving and milling machine

Technical Field

The application relates to the technical field of cutting processing equipment, in particular to a novel efficient engraving and milling machine.

Background

The engraving and milling machine is used as numerical control cutting processing equipment and has the characteristics of high processing precision and wide application range.

An engraving and milling machine, refer to fig. 1, which comprises a machine tool body 1, wherein the machine tool body 1 is provided with a main shaft 11 and a workbench 2; the main shaft 11 is arranged along the vertical direction in the axial direction; the main shaft 11 can move up and down and the main shaft 11 can rotate around the axis of the main shaft; the table 2 is located below the spindle 11, and the table 2 is movable in the longitudinal direction and the width direction of the machine tool body 1. When a workpiece is processed by using the engraving and milling machine, a cutter is arranged at the lower end of the main shaft 11, and the workpiece to be processed is clamped on the workbench 2; then, the table 2 is manually slowly manipulated to move the center of the workpiece to a position directly below the spindle 11; at this time, the coordinates displayed by the engraving and milling machine are X, Y coordinates set as the origin of the workpiece coordinate system; then, setting a Z coordinate of an origin of a workpiece coordinate system according to the thickness of the workpiece; and finally, starting the engraving and milling machine to enable the engraving and milling machine to process the workpiece according to a preset program.

For the related art, the inventor thinks that, when setting the origin coordinate of the workpiece coordinate system, the workbench needs to be manually and slowly controlled, the operation is complicated, and the debugging efficiency of the engraving and milling machine is low, so the method needs to be improved.

Disclosure of Invention

The utility model aims at providing a novel high-efficient cnc engraving and milling machine to improve the problem of cnc engraving and milling machine debugging inefficiency.

The application provides a pair of novel high-efficient cnc engraving and milling machine adopts following technical scheme:

a novel high-efficiency engraving and milling machine 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 workbench is provided with a sliding groove along the length direction of the workbench, and the workbench is provided with a sliding groove along the width direction of the workbench; the inner side wall of the sliding groove and the inner side wall of the sliding groove are connected with two clamping plates used for clamping a workpiece to be processed in a sliding mode; 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; and a fixing part for fixing the clamping plate is arranged between the clamping plate and the workbench.

By adopting the technical scheme, after a workpiece to be processed is placed on the workbench, the clamping plate is slid to enable the clamping plate to be abutted against the side wall of the workpiece; two clamping plates in the sliding groove synchronously approach to the workpiece so that the workpiece moves to the central position between the two corresponding clamping plates along the length direction of the workbench; the two clamping plates in the sliding groove are synchronously close to the workpiece, so that the workpiece moves to the center position between the two corresponding clamping plates along the width direction of the workbench, and the center of the workpiece is superposed with the center of an area surrounded by the four clamping plates. When workpieces with different sizes are machined, 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 last machined workpiece, the X, Y coordinates of the origin of the workpiece coordinate system do not need to be debugged again, and only the Z coordinates of the origin of the workpiece coordinate system need to be adjusted according to the thickness of the workpieces; the operation of resetting the X, Y coordinates of the original point of the workpiece coordinate system is reduced, the operation is simpler and more labor-saving, and the debugging time of the machine tool is favorably shortened, so that the debugging efficiency of the machine tool is improved, and the machining efficiency of the machine tool is improved. After the clamping plate clamps the workpiece, the clamping plate is fixed by the fixing piece, so that the workpiece to be processed can be fixed, and the clamping device is simple in structure and convenient and fast to operate.

Optionally, the connecting assembly includes a connecting gear rotatably connected to the worktable and connecting racks located at two sides of the connecting gear; the connecting racks correspond to the clamping plates one by one, and each connecting rack is fixedly connected with the clamping plate; and the two connecting racks are meshed with the connecting gear.

Through adopting above-mentioned technical scheme, when one of them grip block removed, the grip block can drive the connecting rack that corresponds and remove to the drive connecting gear rotates, thereby can drive another connecting rack and grip block and remove, thereby realizes that two grip blocks are close to each other in step or keep away from each other in step.

Optionally, the two connecting gears are connected with a rotating shaft, and the rotating shaft is rotatably connected with the workbench; the axis of rotation slides along self axial and is connected with fixed sleeve, fixed sleeve's periphery wall and workstation threaded connection.

By adopting the technical scheme, the connecting gear can be driven to rotate by rotating the rotating shaft so as to drive the two corresponding clamping plates to approach or move away from each other; the fixed sleeve is in threaded fit with the workbench, so that the contact area between the rotating shaft and the workbench can be increased, and the friction force between the rotating shaft and the workbench can be increased; after the grip block contacts with the work piece to be processed, the rotation axis stops rotating, and the rotation axis accessible self keeps static with the frictional force between the workstation to reduce the possibility that grip block and work piece break away from, thereby be convenient for mounting locking grip block, so that the grip block presss from both sides tight work piece.

Optionally, the workbench is rotatably connected with a driving shaft, the driving shaft is connected with two transmission shafts, and both the two transmission shafts are rotatably connected with the workbench; the driving shaft can drive the two transmission shafts to synchronously rotate; the transmission shafts correspond to the rotating shafts one by one, and a transmission assembly is connected between each 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 technical scheme, when a workpiece is clamped, the driving shafts can be directly rotated to drive the two driving shafts to rotate, so that the two driving shafts are driven to rotate to drive all the clamping plates to move towards the direction of the workpiece; when one of the clamping plates is abutted to the workpiece, the corresponding rotating shaft stops rotating; at this moment, the drive shaft continues to rotate to drive another axis of rotation and rotate, until all grip blocks all with the work piece butt can, the operation is simpler, convenient.

Optionally, the transmission assembly includes a fixed plate fixedly connected to the rotating shaft and a sliding plate slidably connected to the transmission shaft along an axial direction of the transmission shaft; the sliding plate is provided with a transmission bulge extending towards the direction of the fixed plate, and the fixed plate is provided with a fixed groove in inserted fit with the transmission bulge; the transmission bulge is obliquely provided with guide surfaces along the two sides of the circumferential direction of the transmission shaft; and an elastic connecting piece for driving the sliding plate to move towards the direction of the fixed plate is connected between the sliding plate and the transmission shaft.

Through adopting above-mentioned technical scheme, after the axis of rotation is obstructed and the stall, when the drive shaft continues the application of force to the drive shaft, the transmission arch produced the effort to the inside wall of fixed slot, and the inside wall of fixed slot has reverse effort to the guiding surface to the drive sliding plate removes to the direction of keeping away from the fixed plate, so that the transmission arch breaks away from with the fixed slot, in order to supply the drive shaft to continue to rotate.

Optionally, the two connecting gears are sequentially arranged along the up-down direction; the upper connecting gear positioned at the upper part is coaxially connected with an upper fixed shaft, the lower connecting gear positioned at the lower part is coaxially connected with a lower fixed shaft, and the lower fixed shaft is rotationally connected with the workbench; the upper end wall of the lower fixed shaft penetrates downwards to be provided with a rotating hole, the upper fixed shaft is inserted into the rotating hole, and the upper fixed shaft is rotatably connected with the inner side wall of the rotating hole.

Through adopting above-mentioned technical scheme, two connecting gear set gradually along upper and lower direction, are favorable to making two sets of grip blocks all centre gripping in the central point that corresponds of work piece puts to be favorable to improving the homogeneity of the atress of each side of work piece, be favorable to increasing the size scope of treating the processing work piece simultaneously, improve the suitability.

Optionally, the clamping plate is connected with an abutting block which is used for abutting against the side wall of the workpiece to be processed in a sliding manner along the self sliding direction; the clamping plate is connected with a connecting block in a sliding manner along the vertical direction, and the connecting block is provided with an inserting hole for inserting one end of the abutting block; the connecting block is provided with a limiting block which is used for being abutted against the upper surface of a workpiece to be processed; the butting block is obliquely provided with a driving surface which is used for butting against the inner side wall on the lower side of the inserting hole; the butt joint block is connected with an elastic butt joint piece used for driving the butt joint block to move towards the direction far away from the plug hole.

Through adopting above-mentioned technical scheme, the grip block is at first with the lateral wall butt of work piece to the in-process that the work piece is close to, so that the driving surface supports the inside wall that pushes away the downside of spliced eye, with the drive connecting block downstream, thereby drives the stopper downstream in order to support the upper surface of tight work piece. When the clamping plate moves towards the direction far away from the workpiece, the abutting block is separated from the plug hole, so that the interaction force between the limiting block and the workpiece is reduced, the limiting block and the workpiece are convenient to separate from each other, and the clamping plate is convenient to move.

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

Through adopting above-mentioned technical scheme, binding face and driving surface mutually support, can increase the area of contact between butt piece and the connecting block, reduce the interact power between butt piece and the connecting block to be convenient for the relative movement between butt piece and the connecting block, so that butt piece drive connecting block removes.

Optionally, an elastic abutting piece for driving the connecting block to move upwards is arranged between the connecting block and the clamping plate.

By adopting the technical scheme, when the abutting block is separated from the inserting hole, the elastic abutting piece moves on the workpiece.

Optionally, the connecting block is connected with a docking rod in a sliding manner along the up-down direction, and the connecting block is provided with a locking piece for fixing the docking rod; the limiting block is fixedly connected with the butt joint rod.

Through adopting above-mentioned technical scheme, butt joint pole can be adjusted from top to bottom for the connecting block to adjust the distance between the upper surface of stopper and workstation, with the clamping that is suitable for the work piece to different thickness.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when workpieces with different sizes are machined, 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 last machined workpiece, the X, Y coordinate of the origin of the workpiece coordinate system does not need to be reset, the operation is simpler and more labor-saving, and the debugging efficiency of the machine tool is improved;

2. the driving shaft, the transmission shaft and the transmission assembly are matched with each other to drive all the clamping plates to move, so that the structure is simple and the operation is convenient and fast;

3. the clamping plate is to the in-process that the work piece is close to, the butt joint piece at first with the lateral wall butt of work piece to make the driving surface support the inside wall that pushes away the downside of spliced eye, with the downward movement of drive connecting block, thereby drive the stopper and move down in order to support the upper surface of tight work piece, thereby further fixed work piece.

Drawings

Fig. 1 is a schematic view of an overall structure of a cnc engraving and milling machine in the related art.

Fig. 2 is an overall structural schematic diagram of the novel high-efficient cnc engraving and milling machine of this application embodiment.

Fig. 3 is a schematic structural view for showing the work table.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic sectional view taken along line B-B in fig. 4.

Fig. 6 is a schematic sectional view taken along line C-C in fig. 3.

Fig. 7 is an exploded view for showing a connection structure between the chucking plate and the work table.

Fig. 8 is an enlarged view of a portion D in fig. 6.

Fig. 9 is an exploded view for showing the structure of the transmission assembly.

In the figure, 1, a machine tool body; 11. a main shaft; 2. a work table; 21. a sliding groove; 22. a sliding groove; 23. accommodating grooves; 24. a containing groove; 241. mounting grooves; 2411. mounting a plate; 25. a yielding groove; 26. mounting blocks; 261. a transmission screw hole; 27. a drive shaft; 28. a drive shaft; 281. a limiting ring; 282. an elastic connecting member; 3. a clamping plate; 31. a fixed block; 311. a fixing member; 312. a threaded hole; 32. a limiting strip; 321. a limiting groove; 33. connecting blocks; 331. inserting holes; 3311. a binding face; 332. a guide hole; 34. a bearing plate; 341. an elastic pushing piece; 35. a sliding hole; 351. a butting block; 3511. a drive face; 3512. an extension block; 352. an extension groove; 3521. an elastic abutting member; 36. a locking member; 4. a limiting block; 41. a docking rod; 5. a connecting assembly; 51. a connecting gear; 511. an upper fixed shaft; 512. a lower fixed shaft; 5121. rotating the hole; 52. connecting the racks; 6. a drive turbine; 61. a drive worm; 611. a rotating shaft; 6111. a drive key; 612. fixing the sleeve; 6121. a transmission groove; 7. a transmission assembly; 71. a fixing plate; 711. fixing grooves; 72. a sliding plate; 721. a transmission projection; 7211. a guide surface.

Detailed Description

The present application is described in further detail below with reference to fig. 2-9.

The utility model provides a novel high-efficient cnc engraving and milling machine, refers to fig. 2, including lathe main part 1, lathe main part 1 is provided with main shaft 11 and workstation 2. The workbench 2 is used for clamping a workpiece to be machined; the spindle 11 is used for mounting a tool to machine a workpiece to be machined.

Referring to fig. 3, a sliding groove 21 is formed in the upper surface of the worktable 2 along the length direction of the worktable 2; in this embodiment, each end of the sliding groove 21 is communicated with the end wall of the corresponding end of the workbench 2, and a filling block is integrally formed in the middle of the workbench 2 in the length direction of the sliding groove 21, and the filling block divides the sliding groove 21 into two sections. The upper surface of the workbench 2 is provided with a sliding groove 22 along the width direction of the workbench 2; in this embodiment, each end of the sliding groove 22 is communicated with the side wall of the corresponding side of the worktable 2, and the worktable 2 is integrally formed and filled with a filling block 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 slide groove 21 is located at the center of the table 2 in the width direction thereof, and the slide groove 22 is located at the center of the table 2 in the length direction thereof. The inner side walls of each section of sliding groove 21 and each section of sliding groove 22 are connected with a clamping plate 3 in a sliding manner; when a workpiece is clamped, the workpiece to be processed is placed in an area enclosed by the four clamping plates 3; the two holding plates 3 located in the sliding groove 21 can hold both ends of the workpiece in the length direction of the workpiece itself, and the two holding plates 3 located in the sliding groove 22 can hold both sides of the workpiece in the width direction of the workpiece itself to clamp the workpiece to be processed. In another embodiment, the two sliding grooves 21 are communicated with each other, and the two sliding grooves 22 are communicated with each other.

Referring to fig. 3 and 4, a fixing block 31 is welded and fixed to a side wall of each clamping plate 3 away from the opposite clamping plate 3, 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 extending downward, and the fixing member 311 is in threaded connection with the inner side wall of the threaded hole 312. After the clamping plate 3 moves to abut against 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 worktable 2, so as to fix the clamping plate 3, thereby fixing the workpiece to be processed.

Referring to fig. 4, the clamping plate 3 is fixed by welding with a limiting strip 32, and the limiting strip 32 and the fixing block 31 are located on the same side of the clamping plate 3. Spacing groove 321 has all been seted up along the upper and lower direction to the lateral wall of two spacing strips 32's mutual orientation, and the inside wall of two spacing grooves 321 slides jointly and is connected with connecting block 33. The holding plate 3 is welded and fixed with a receiving plate 34 at a position below the connecting block 33, and an elastic pushing member 341 is disposed on the upper surface of the receiving plate 34. In this embodiment, the elastic pushing member 341 includes a rubber pad, a lower surface of the rubber pad is adhered and fixed to an upper surface of the receiving plate 34, and an upper surface of the rubber pad is abutted against a lower end wall of the connecting block 33 to support the connecting block 33. In another embodiment, the elastic pushing element 341 may also be a spring.

Referring to fig. 4 and 5, the lateral wall of the clamping plate 3 deviating from one side of the fixing block 31 runs through along the sliding direction of the clamping plate 3, and is provided with a sliding hole 35, the inner side wall of the sliding hole 35 slides and is connected with the abutting block 351, and the two ends of the abutting block 351 are both located outside the sliding hole 35. The side wall of the connecting block 33 facing the direction of the abutting block 351 is provided with a plug hole 331 along the length direction of the sliding hole 35, and the inner side wall of the lower side of the mouth of the plug hole 331 is obliquely provided with an attaching surface 3311; a driving surface 3511 is obliquely formed at the lower side of the end wall of the abutting block 351 close to one end of the inserting hole 331. The driving surface 3511 is attached to the attaching surface 3311; when the clamping plate 3 moves to the abutting block 351 to abut against the workpiece, the workpiece can drive the abutting block 351 to move towards the insertion hole 331 so as to drive the connecting block 33 to move downwards, and meanwhile, the elastic abutting piece 341 is compressed. The upper end of connecting block 33 is connected with stopper 4, and stopper 4 can move down along with connecting block 33 to compress tightly the work piece, thereby further fixed work piece.

Referring to fig. 4, an abutting rod 41 is disposed between the limiting block 4 and the connecting block 33, one end of the abutting rod 41 is welded to the lower surface of the limiting block 4, and the other end extends downward. The upper end wall of the connecting block 33 is provided with a guide hole 332 downwards; the lower ends of the straws are inserted into the guide holes 332, and the peripheral wall of the butt-joint rod 41 is connected with the inner side wall of the guide holes 332 in a sliding manner, so that the distance between the limiting block 4 and the upper surface of the workbench 2 can be conveniently adjusted. The holding plate 3 is provided with a locking member 36; in this embodiment, the locking member 36 includes a screw, the locking member 36 is connected to the clamping plate 3 by a screw, and one end of the locking member 36 extends into the guiding hole 332 to abut against the abutting rod 41, so as to fix the abutting rod 41 and the limiting block 4.

Referring to fig. 5, an extension block 3512 is welded and fixed to a side wall of the abutment block 351; the extension groove 352 is opened along the length direction of the sliding hole 35 in the inner side wall of the sliding hole 35, and the extension block 3512 is located in the extension groove 352. An elastic abutting part 3521 is arranged in the extension groove 352; in this embodiment, the elastic abutting member 3521 is a spring; in another embodiment, the elastic abutment 3521 may also be a rubber pad. One end of the elastic abutting piece 3521 abuts against the limiting block 4, and the other end abuts against the inner side wall of one end, close to the inserting hole 331, of the extension groove 352; when the clamping plate 3 moves in a direction away from the workpiece, the elastic abutting part 3521 can push the abutting block 351 in a direction away from the insertion hole 331, so that the elastic abutting part 341 abuts against and pushes the connecting block 33 upwards, so that the limiting block 4 is separated from the workpiece, and the clamping plate 3 is convenient to move.

Referring to fig. 6 and 7, the connecting members 5 are connected between the two clamping plates 3 in the sliding groove 21 and between the two clamping plates 3 in the sliding groove 22. The connecting assembly 5 comprises a connecting gear 51 and connecting racks 52 positioned on two sides of the connecting gear 51; the connecting racks 52 are in one-to-one correspondence with the clamping plates 3, the length direction of each connecting rack 52 is arranged along the sliding direction of the corresponding clamping plate 3, and one end, far away from the connecting gear 51, of each connecting rack 52 is welded and fixed with the corresponding clamping plate 3. The workbench 2 is provided with an accommodating groove 23 at each connecting rack 52 for the corresponding connecting rack 52 to be embedded. Both connecting racks 52 are engaged with the connecting gear 51, and when the connecting gear 51 rotates, the connecting racks 52 can drive the two corresponding clamping plates 3 to synchronously approach each other or synchronously move away from each other.

Referring to fig. 6 and 7, an accommodating groove 24 is formed 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 the two connecting gears 51 are coaxially disposed. The upper fixed shaft 511 is coaxially keyed to the upper connecting gear 51, and the lower fixed shaft 512 is coaxially keyed to the lower connecting gear 51. 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 with the worktable 2 through a bearing. The upper end wall of the lower fixed shaft 512 is downwards penetrated with a rotating hole 5121; the lower end of the upper fixing shaft 511 is inserted into the lower rotating hole 5121, and the upper fixing shaft 511 is rotatably connected to the inner sidewall of the rotating hole 5121 through a bearing. The inside wall of the upper end of storage tank 24 has seted up mounting groove 241 along its circumference, has placed mounting panel 2411 in mounting groove 241, and mounting panel 2411 passes through the screw to be fixed with workstation 2 to shutoff storage tank 24.

Referring to fig. 6 and 8, a yielding groove 25 penetrates through the lower surface of the table 2 along the width direction thereof, and the lower ends of the upper and

lower fixing shafts

511 and 512 are located in the yielding groove 25. The lower ends of the lower fixed shaft 512 and the upper fixed shaft 511 are coaxially connected with transmission turbines 6 in a key mode, the position, located on each transmission turbine 6, of the workbench 2 is rotatably connected with a transmission worm 61 through a bearing, the axial direction of the transmission worm 61 is arranged along the width direction of the workbench 2, and the transmission worm 61 is meshed with the transmission turbines 6 for drinking. Each driving worm 61 is coaxially keyed with a rotating shaft 611, and the rotating shaft 611 is rotatably connected with the workbench 2 through a bearing. The bottom wall of the avoiding groove 25 at the position of the rotating shaft 611 is fixedly provided with an installation block 26 through a screw, and the installation block 26 penetrates through the width direction of the workbench 2 to be provided with two transmission screw holes 261. The transmission screw holes 261 correspond to the rotation shafts 611 one by one, and one end of each rotation shaft 611, which is far away from the transmission worm 61, is inserted into the corresponding transmission screw hole 261 and extends to the same side of the workbench 2.

Referring to fig. 6 and 8, the rotating shaft 611 is sleeved with a fixing sleeve 612, and an outer side wall of the fixing sleeve 612 is in threaded connection with an inner side wall of the transmission screw hole 261. A driving key 6111 is fixedly mounted on the peripheral wall of the rotating shaft 611, and the length direction of the driving key 6111 is arranged along the axial direction of the rotating shaft 611. The inner side wall of the fixed sleeve 612 is provided with a transmission groove 6121 along the axial direction thereof; the transmission key 6111 is located in the transmission slot 6121, and the transmission key 6111 is connected with the inner side wall of the transmission slot 6121 in a sliding manner. The rotating shaft 611 is rotated to drive the corresponding connecting gear 51 to rotate, and meanwhile, 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 screw-engaged with the transmission screw hole 261 to reduce the possibility of the rotating shaft 611 rotating.

Referring to fig. 6 and 9, the table 2 is provided with a driving shaft 27 at a position of one end of the rotation shaft 611 away from the drive worm 61, and the driving shaft 27 is rotatably connected to the table 2 through a bearing. The workbench 2 is provided with two transmission shafts 28 at the position of the driving shaft 27 in a rotating way; the driving shaft 27 is connected with the transmission shaft 28 through gear transmission; when the drive shaft 27 is rotated, the two transmission shafts 28 are rotated in synchronization.

Referring to fig. 6 and 9, the transmission shafts 28 correspond to the rotation shafts 611 one by one, and a transmission assembly 7 is connected between each of the transmission shafts 28 and the corresponding rotation shaft 611, the transmission assembly 7 including a fixed plate 71 and a sliding plate 72. The fixing plate 71 is welded and fixed to the end wall of the rotating shaft 611; the sliding plate 72 is sleeved outside the transmission shaft 28, and the sliding plate 72 is keyed with the transmission shaft 28, and the sliding plate 72 can slide along the axial direction of the transmission shaft 28. The slide plate 72 is provided with a transmission protrusion 721, and in this embodiment, the transmission protrusion 721 is provided in plurality in sequence 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 toward the direction of the fixed plate 71; the fixing plate 71 has fixing grooves 711 on the side wall of each transmission protrusion 721 for inserting the corresponding transmission protrusion 721. When the transmission shaft 28 rotates, the transmission protrusion 721 can push against the inner sidewall of the fixing groove 711 to drive the corresponding fixing plate 71 and the rotating shaft 611 to rotate. The side walls of the transmission protrusions 721 on both sides in the circumferential direction of the transmission shaft 28 are both obliquely provided with guide surfaces 7211.

Referring to fig. 9, a limit ring 281 is welded and fixed to a peripheral wall of the transmission shaft 28 on a side of the sliding plate 72 remote from the fixed plate 71. A resilient connection 282 is provided between the slide plate 72 and the drive shaft 28. In this embodiment, the resilient connector 282 comprises a spring that is received around the perimeter wall of the drive shaft 28. One end of the elastic connecting element 282 abuts against the side wall of the sliding plate 72 on the side away from the fixed plate 71, and the other end abuts against the limiting ring 281 to push the sliding plate 72, so that the risk of the separation of the transmission protrusion 721 from the fixing groove 711 is reduced. When the rotating shaft 611 is blocked and stops rotating in the process of rotating the transmission shaft 28, the reverse acting force of the inner side wall of the fixing groove 711 on the transmission protrusion 721 is increased; under the action of the guide surface 7211, the sliding plate 72 automatically moves toward the stop ring 281 for the transmission shaft 28 to continue rotating.

The implementation principle of the embodiment of the application is as follows:

when a workpiece is clamped, the workpiece is placed in an area enclosed by the four clamping plates 3, and the lower surface of the workpiece is attached to the upper surface of the workbench 2; then, the drive shaft 27 is rotated to drive the drive shaft 28 and the rotation shaft 611 to rotate, thereby rotating the connecting gear 51 to drive the chucking plate 3 to approach the workpiece to chuck the workpiece.

When workpieces with different sizes are machined, the two opposite clamping plates 3 can be synchronously close to the workpiece, so that the workpiece can be automatically moved to the central position between the two clamping plates 3, the center of the corresponding workpiece can be automatically coincided with the center of the workpiece moving upwards, X, Y coordinates of the original point of the workpiece coordinate system do not need to be reset, the operation of resetting X, Y coordinates of the original point of the workpiece coordinate system is reduced, the debugging efficiency of the machine tool is improved, and the technician efficiency of the machine tool is improved.

The embodiments of the present disclosure are all preferred embodiments of the present disclosure, and the protection scope of the present disclosure is not limited thereby, wherein like parts are designated by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

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).