CN216228342U - Four-shaft and four-head linkage engraving and milling machine - Google Patents

Abstract

The utility model provides a four-axis and four-head linkage engraving and milling machine which comprises a rack, wherein one end of the interior of the rack is arranged on a clamping moving device, the other end of the interior of the rack is provided with a machine head, and the execution end of the machine head is connected with a plurality of cutters; the clamping moving device comprises a translation assembly arranged in the rack and a tool clamp connected with an execution end of the translation assembly. The multi-angle displacement device can drive a workpiece to move in multiple angles so as to meet the position requirements of multiple cutters during machining and improve the working efficiency.

Description

Four-shaft and four-head linkage engraving and milling machine

Technical Field

The utility model mainly relates to the technical field of engraving and milling machines, in particular to a four-shaft and four-head linkage engraving and milling machine.

Background

The engraving and milling machine is a numerical control machine, and the metal engraving and milling machine can perform non-contact cutting and punching on metal or nonmetal plates and pipes.

According to the engraving and milling machine with the built-in feeding and discharging device provided by the patent document with the application number of CN201610725473.7, the engraving and milling machine comprises a main body of the engraving and milling machine, wherein a built-in feeding and discharging mechanism is arranged in the main body of the engraving and milling machine, and a jig mechanism is arranged below the built-in feeding and discharging mechanism; the engraving and milling machine main body is also provided with a stock bin mechanism, the stock bin mechanism comprises an outer part extending out of the engraving and milling machine main body and an inner part positioned in the engraving and milling machine main body, and the inner part is adjacent to the jig mechanism; the feeding and discharging mechanism in the machine is connected with the head part and comprises a sucker assembly, the sucker assembly is connected with the guide rod cylinder, and the sucker assembly can move up and down along the guide rod cylinder; the tool mechanism is arranged below the sucker component. The feeding and discharging mechanism is arranged inside the engraving and milling machine, automatic feeding and discharging are achieved through the air cylinder structure, the working efficiency of the machine tool is improved, and labor cost is reduced.

Above-mentioned cnc engraving and milling machine can realize automatic unloading of going up, has improved the work efficiency of lathe, has reduced the cost of labor, but traditional cnc engraving and milling machine is because of the clamping back, and the work piece removes the difficulty, leads to often can only carry out single process among the sculpture process to processing time has been prolonged, production efficiency has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a four-axis and four-head linkage engraving and milling machine for solving the technical problems in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the four-shaft and four-head linkage engraving and milling machine comprises a rack, wherein one end of the interior of the rack is arranged on a clamping moving device, the other end of the interior of the rack is provided with a machine head, and the execution end of the machine head is connected with a plurality of cutters;

the clamping moving device comprises a translation assembly arranged in the rack and a tool clamp connected with an execution end of the translation assembly, wherein the translation assembly comprises a Y-axis ball screw pair arranged in the rack, an X-axis ball screw pair connected with the execution end of the Y-axis ball screw pair and a workbench connected with the execution end of the X-axis ball screw pair;

frock clamp including install in the translation mechanism on workstation top, with first backup pad and the second backup pad that translation mechanism's execution end is connected, one side that the second backup pad was kept away from to first backup pad is installed and is rotated the part of admitting air, all be connected with the gas-supply pipe through the bearing rotation on the casing of first backup pad and second backup pad, gas-supply pipe one end is connected with the execution end that rotates the part of admitting air, the other end extends to and is connected with the dish of admitting air between first backup pad and the second backup pad, it has a plurality of flexible chucks to alternate on the casing of dish of admitting air, the inside of dish of admitting air is equipped with locking mechanism.

Further, translation mechanism is including locating the spout on workstation top to and through the bearing with the spout rotates the lead screw of connecting, the lead screw extends to outside one end and is connected with first motor, the surface of lead screw is connected with two translation pieces through the screw, two the translation piece install respectively in the lower surface of first backup pad and second backup pad, the output shaft through first motor drives rather than the lead screw of being connected and rotates, and the translation piece overlaps through its cover and establishes the screw on the lead screw, changes the rotary motion of lead screw into self linear motion.

Furthermore, the rotation air inlet part comprises a bearing plate and a speed reducer, wherein the bearing plate is arranged at the bottom end of one side surface of the second supporting plate and is far away from the first supporting plate, the speed reducer is arranged at one side surface of the bearing plate, an input shaft of the speed reducer is connected with a second motor, an output shaft of the speed reducer is connected with a worm, the worm is connected with the upper surface of the bearing plate through a bearing seat, the top end of the worm is meshed with a worm wheel, the worm wheel is sleeved on the outer surface of the air pipe and drives the worm wheel to rotate through the worm, and the air pipe inserted into the worm wheel is driven to rotate through the worm wheel so as to drive the air inlet disc to rotate through the air pipe.

Furthermore, rotate the air inlet part still including install in the first rotary joint of bearing plate upper surface, first rotary joint's execution end with the gas-supply pipe is connected, supplies air for the gas-supply pipe through the first rotary joint who is connected with the air pump.

Further, locking mechanism including install in the sleeve that the dish was inside just supplied flexible chuck to alternate admits air, install in the rubber head that aerifys of sleeve inner wall, the outside cover of aerifing the rubber head is equipped with the spring, and flexible chuck extends to the recess of the inside one end of sleeve in crowded flexible chuck of income through the rubber head that aerifys of inflation to accomplish the locking to flexible chuck, reduce the displacement of flexible chuck, improve the tight dynamics of clamp of flexible chuck to the work piece.

Further, the one end internally mounted that flexible chuck was kept away from to the dish that admits air has the baffle on being fixed in the sleeve casing, a side fixed surface of baffle has a plurality of jet heads, inside the jet head extended to the inflatable rubber head, the inside work piece that the dish will admit air through the baffle separates to make high-pressure air get into the cavity that sleeve one end formed is kept away from to the baffle, so that high-pressure air packs the back in this space, can carry out the air feed for a plurality of jet heads that stretch into inflatable rubber head inside.

Furthermore, the translation assembly further comprises a first cleaning mechanism arranged on the upper surface of the X-axis ball screw pair and a second cleaning mechanism arranged on the upper surface of the Y-axis ball screw pair, the first cleaning mechanism and the second cleaning mechanism are identical in structure, the first cleaning mechanism comprises organ type shielding covers arranged on the surfaces of the two sides of the workbench and shielding blades arranged on the upper surface of the organ type shielding covers at equal intervals, and shielding is provided for the Y-axis ball screw pair and the X-axis ball screw pair through the organ type shielding covers.

Furthermore, first clearance mechanism still including install in the storage wind box of the vice both sides of X axle ball screw installs in two the intake pipe of a side surface that storage wind box kept away from each other locates two a plurality of ash holes that storage wind box is close to the both ends of a side surface of the vice X axle ball screw, and locate adjacent two give vent to anger the head between the ash hole, it installs in two to go out the gas head store up wind box and be close to a side surface of the X axle ball screw pair, for giving vent to anger the head air feed through the intake pipe to blow the dust of V-arrangement inslot and blow out through the ash hole, drop to the frame inside storage dust incasement.

Further, first clearance mechanism still include through the pivot with shelter from the gear that the blade rotation is connected, and imbed in the rack of air storage box upper surface, the rack with same one side the gear meshes mutually, carries out the translation through the vice drive gear of X axle ball screw for shelter from the blade and change the linear motion of self into circular motion through the gear because gear and rack mesh mutually.

Further, one side surface mounting that first backup pad was kept away from to the second backup pad has a second rotary joint, the end of giving vent to anger of second rotary joint with be connected through the hose between the inlet end of intake pipe, be pivoted intake pipe air feed in the second backup pad through second rotary joint, and be the intake pipe air feed through second rotary joint.

Compared with the prior art, the utility model has the beneficial effects that:

firstly, the multi-angle displacement device can drive a workpiece to carry out multi-angle displacement so as to meet the position requirement of a plurality of cutters during processing and improve the working efficiency, and specifically comprises the following steps: the Y-axis ball screw pair drives the X-axis ball screw pair to move along a straight line, the X-axis ball screw pair drives the workbench to move along the other direction, so that the workbench flexibly drives the tool clamp to align to the cutter, the worm drives the worm wheel to rotate, the worm wheel drives the gas pipe to penetrate into the workbench to rotate, the gas pipe drives the gas inlet disc to rotate, the flexible chuck drives the clamping workpiece to rotate through the gas inlet disc, and the cutter is aligned to the position to be machined of the workpiece.

Secondly, the workpiece can be stably clamped by the clamping device, so that when the workpiece is displaced, the cutter can accurately reach the working position, and the clamping device specifically comprises: when the flexible chuck is pushed by the extrusion of the workpiece and is close to the inflatable rubber head, high-pressure air is provided for the inflatable rubber head through the air inlet disc, so that the inflatable rubber head is expanded, the inflatable rubber head is extruded into the groove formed in the end, extending to the inner end of the sleeve, of the flexible chuck, the flexible chuck is locked, the displacement of the flexible chuck is reduced, and the clamping force of the flexible chuck on the workpiece is improved.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an exploded view of the inventive tool holder;

FIG. 5 is a schematic view of the internal structure of the housing of the present invention;

FIG. 6 is an enlarged view of the structure of region A in FIG. 1;

FIG. 7 is an enlarged view of the structure of area A in FIG. 3;

fig. 8 is an enlarged view of the structure of region B in fig. 3.

In the figure: 10. a frame; 20. clamping the mobile device; 21. a translation assembly; 211. a Y-axis ball screw pair; 212. an X-axis ball screw pair; 213. a work table; 214. a first cleaning mechanism; 2141. an organ-type shield cover; 2142. shielding the blade; 2143. an air storage box; 2144. an ash outlet; 2145. an air outlet head; 2146. a gear; 2147. a rack; 2148. an air inlet pipe; 215. a second cleaning mechanism; 22. a tooling fixture; 221. a translation mechanism; 2211. a chute; 2212. a screw rod; 2213. a first motor; 2214. a translation block; 222. a first support plate; 223. a second support plate; 2231. a second rotary joint; 224. rotating the air intake component; 2241. a pressure bearing plate; 2242. a speed reducer; 2243. a second motor; 2244. a worm; 2245. a worm gear; 2246. a first rotary joint; 225. a gas delivery pipe; 226. a locking mechanism; 2261. a sleeve; 2262. an inflatable rubber head; 2263. a spring; 227. an air inlet disc; 2271. a partition plate; 228. a flexible collet; 30. a machine head; 40. and (4) a cutter.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In an embodiment, referring to fig. 1-8, a four-axis and four-head linkage engraving and milling machine includes a frame 10, one end of the interior of the frame 10 is disposed on a clamping moving device 20, the other end is disposed on a machine head 30, and an execution end of the machine head 30 is connected with a plurality of cutters 40;

the clamping moving device 20 comprises a translation assembly 21 mounted inside the rack 10 and a tool clamp 22 connected with an execution end of the translation assembly 21, wherein the translation assembly 21 comprises a Y-axis ball screw pair 211 mounted inside the rack 10, an X-axis ball screw pair 212 connected with the execution end of the Y-axis ball screw pair 211 and a workbench 213 connected with the execution end of the X-axis ball screw pair 212;

frock clamp 22 including install in the translation mechanism 221 on workstation 213 top, with first backup pad 222 and the second backup pad 223 that translation mechanism 221's execution end is connected, one side that second backup pad 223 was kept away from to first backup pad 222 is installed and is rotated air inlet component 224, all be connected with gas pipe 225 through the bearing rotation on the casing of first backup pad 222 and second backup pad 223, gas pipe 225 one end is connected with the execution end that rotates air inlet component 224, the other end extends to and is connected with air inlet plate 227 between first backup pad 222 and the second backup pad 223, it has a plurality of flexible collets 228 to cross to insert on air inlet plate 227's the casing, air inlet plate 227's inside is equipped with locking mechanism 226.

Specifically, please refer to fig. 3 and 4 heavily, the translation mechanism 221 includes a chute 2211 disposed at the top end of the working platform 213, and a lead screw 2212 rotatably connected to the chute 2211 through a bearing, one end of the lead screw 2212 extending to the outside is connected to a first motor 2213, the outer surface of the lead screw 2212 is connected to two translation blocks 2214 through a nut, the two translation blocks 2214 are respectively mounted on the lower surfaces of the first support plate 222 and the second support plate 223, the rotary air intake component 224 includes a pressure bearing plate 2241 mounted at the bottom end of one side surface of the first support plate 222 away from the second support plate 223, and a speed reducer 2242 mounted on one side surface of the pressure bearing plate 2241, the input shaft of the speed reducer 2242 is connected to a second motor 2243, the output shaft of the speed reducer 2242 is connected to a worm 2244, the worm 2244 is connected to the upper surface of the pressure bearing plate 2241 through a bearing seat, a worm wheel 2245 is connected to the top end of the worm 2244 in a meshed manner, and the worm wheel 2245 is sleeved on the outer surface of the gas conveying pipe 225;

it should be noted that, in this embodiment, the output shaft of the first motor 2213 drives the lead screw 2212 connected thereto to rotate, the translation block 2214 is sleeved on the screw on the lead screw 2212 through the screw, so as to convert the rotational motion of the lead screw 2212 into a linear motion of itself, so as to drive the first support plate 222 and the second support plate 223 thereon to translate through the translation block 2214, and since the directions of the threads at the two ends of the lead screw 2212 are opposite, the first support plate 222 and the second support plate 223 can be driven to translate back to back;

further, the output shaft of the second motor 2243 drives the speed reducer 2242 connected with the second motor to move, after the torque is increased through the speed reducer 2242, the worm 2244 connected with the output shaft of the second motor is driven to rotate through the speed reducer 2242, the worm 2244 drives the worm wheel 2245 to rotate, the worm wheel 2245 drives the air delivery pipe 225 inserted in the air delivery pipe to rotate, and the air delivery pipe 225 drives the air inlet disc 227 to rotate;

the worm 2244 and the worm 2244 are matched to form a locking structure, so that the air inlet disc 227 is prevented from rotating under the influence of external force generated when a workpiece is machined, and the machining precision is prevented from being influenced.

Specifically, please refer to fig. 4 and 8 again, the rotary air intake component 224 further includes a first rotary joint 2246 installed on the upper surface of the pressure-bearing plate 2241, an execution end of the first rotary joint 2246 is connected to the air delivery pipe 225, the locking mechanism 226 includes a sleeve 2261 installed inside the air intake disc 227 and used for inserting the flexible chuck 228, an inflatable rubber head 2262 installed on the inner wall of the sleeve 2261, a spring 2263 is sleeved outside the inflatable rubber head 2262, a partition 2271 fixed on the housing of the sleeve 2261 is installed inside one end of the air intake disc 227 far away from the flexible chuck 228, a plurality of air nozzles are fixed on a surface of one side of the partition 2271, and the air nozzles extend into the inflatable rubber head 2262;

it should be noted that, in this embodiment, the air is supplied to the air pipe 225 through the first rotary joint 2246 connected to the air pump, and the air pump hose is prevented from being damaged due to the fact that the air pump hose directly supplies air to the air pipe 225 through the arrangement of the first rotary joint 2246;

further, when the flexible chuck 228 is pushed by the squeezing of the workpiece to be close to the inflatable rubber head 2262, high-pressure air is provided for the inflatable rubber head 2262 through the air inlet disc 227, so that the inflatable rubber head 2262 is expanded, and the expanded inflatable rubber head 2262 is squeezed into the groove at one end of the flexible chuck 228 extending to the inside of the sleeve 2261, so that the flexible chuck 228 is locked, the displacement of the flexible chuck 228 is reduced, and the clamping force of the flexible chuck 228 on the workpiece is improved;

the sleeve 2261 guides the flexible chuck 228 to perform linear displacement, and after the air leakage of the inflatable rubber head 2262 occurs, when the flexible chuck 228 is locked by contact, the energy is stored by the spring 2263 to guide the flexible chuck 228 to return to the original working position to wait for clamping the workpiece next time;

further, the internal workpiece of the air intake plate 227 is partitioned by the partition board 2271, so that high-pressure air enters the cavity formed by the partition board 2271 far away from one end of the sleeve 2261, and after the high-pressure air is filled in the space, the air can be supplied to a plurality of air nozzles extending into the inflatable rubber head 2262.

Specifically, please refer to fig. 3, 5, 6 and 7 again, the translation assembly 21 further includes a first cleaning mechanism 214 installed on the upper surface of the X-axis ball screw pair 212, and a second cleaning mechanism 215 installed on the upper surface of the Y-axis ball screw pair 211, the first cleaning mechanism 214 and the second cleaning mechanism 215 have the same structure, the first cleaning mechanism 214 includes a bellows 2141 installed on the two side surfaces of the worktable 213, and shielding blades 2142 equidistantly installed on the upper surface of the bellows 2141, the first cleaning mechanism 214 further includes air storage boxes 2143 installed on the two sides of the X-axis ball screw pair 212, an air inlet pipe 2148 installed on one side surface of the two air storage boxes 2143 away from each other, a plurality of dust outlets 2144 installed on two ends of one side surface of the two air storage boxes 2143 close to the X-axis ball screw pair 212, the air outlet heads 2145 are arranged between two adjacent ash outlets 2144, the air outlet heads 2145 are mounted on one side surfaces of the two air storage boxes 2143 close to the X-axis ball screw pair 212, the first cleaning mechanism 214 further comprises a gear 2146 rotatably connected with the shielding blades 2142 through a rotating shaft, and a rack 2147 embedded in the upper surface of the air storage boxes 2143, the rack 2147 is engaged with the gear 2146 on the same side, a second rotary joint 2231 is mounted on one side surface of the second support plate 223 far away from the first support plate 222, and an air outlet end of the second rotary joint 2231 is connected with an air inlet end of the air inlet pipe 2148 through a hose;

in the present embodiment, the accordion-type shielding cover 2141 shields the Y-axis ball screw pair 211 and the X-axis ball screw pair 212, so as to prevent debris from entering the Y-axis ball screw pair 211 and the X-axis ball screw pair 212 and damaging the Y-axis ball screw pair 211 and the X-axis ball screw pair 212;

further, when the working platform 213 pushes the shielding blade 2142, and the dust outlet 2144 is aligned with the V-shaped groove formed by the organ type shielding cover 2141, the air inlet pipe 2148 connected to the air pump is used for introducing air, so that air is supplied to the air outlet head 2145 through the air inlet pipe 2148, and the dust in the V-shaped groove is blown out through the dust outlet 2144 and falls into the dust storage box inside the rack 10, and in the same way, the organ type shielding cover 2141 on the Y-axis ball screw pair 211 is also used for discharging air through the air outlet head 2145, so that the dust is blown into the dust storage box inside the rack 10;

further, the gear 2146 is driven to translate through the X-axis ball screw pair 212, and the gear 2146 is engaged with the rack 2147, so that the shielding blade 2142 converts the linear motion of the shielding blade 2142 into a circular motion through the gear 2146, and the shielding blade 2142 shields a V-shaped groove formed by the organ type shielding cover 2141, thereby preventing dust in the V-shaped groove from flying;

further, the air inlet pipe 2148 rotating on the second support plate 223 is supplied with air through the second rotary joint 2231, and the air inlet pipe 2148 is supplied with air through the second rotary joint 2231.

The specific operation mode of the utility model is as follows:

when a finishing carving machine is used for processing a workpiece, the Y-axis ball screw pair 211 drives the X-axis ball screw pair 212 to linearly displace, the X-axis ball screw pair 212 drives the workbench 213 to move in the other direction, so that the workbench 213 flexibly drives the tool fixtures 22 to align with the cutter 40, the translation mechanism 221 drives the two tool fixtures 22 to move back and forth until the distance between the two tool fixtures 22 is enough to accommodate the workpiece, the translation mechanism 221 drives the two tool fixtures 22 again until the tool fixtures 22 clamp the workpiece, the speed reducer 2242 drives the worm 2244 connected with the output shaft of the speed reducer to rotate, the worm 2244 drives the worm wheel 2245 to rotate, the worm 2245 drives the gas pipe 225 inserted in the worm to rotate, the gas pipe 225 drives the gas inlet disc 227 to rotate, and the flexible chuck 228 used for clamping the workpiece is driven by the gas inlet disc 227 to rotate, until the position of the workpiece to be processed is aligned with the cutter 40, so as to complete multiple engraving works through the plurality of cutters 40;

when the flexible chuck 228 is pushed by the extrusion of the workpiece to be close to the inflatable rubber head 2262, high-pressure air is provided for the inflatable rubber head 2262 through the air inlet disc 227, so that the inflatable rubber head 2262 is expanded, the expanded inflatable rubber head 2262 is extruded into a groove at one end of the flexible chuck 228 extending to the inner part of the sleeve 2261, the flexible chuck 228 is locked, the displacement of the flexible chuck 228 is reduced, and the clamping force of the flexible chuck 228 on the workpiece is improved;

after the machining is completed, the worktable 213 pushes the shielding blades 2142, so that the dust outlet 2144 is aligned with the V-shaped groove formed by the organ type shielding cover 2141, the air inlet pipe 2148 connected to the air pump is used for introducing air, the air outlet head 2145 is used for supplying air through the air inlet pipe 2148, the dust in the V-shaped groove is blown out through the dust outlet 2144 and falls into the dust storage box inside the rack 10, and similarly, the organ type shielding cover 2141 on the Y-axis ball screw pair 211 is also used for discharging air through the air outlet head 2145, and the dust is blown into the dust storage box inside the rack 10.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims (10)

1. The four-shaft and four-head linkage engraving and milling machine comprises a rack (10) and is characterized in that one end of the interior of the rack (10) is provided with a clamping moving device (20), the other end of the interior of the rack is provided with a machine head (30), and the execution end of the machine head (30) is connected with a plurality of cutters (40);

the clamping moving device (20) comprises a translation assembly (21) arranged inside the rack (10) and a tool clamp (22) connected with an execution end of the translation assembly (21), wherein the translation assembly (21) comprises a Y-axis ball screw pair (211) arranged inside the rack (10), an X-axis ball screw pair (212) connected with the execution end of the Y-axis ball screw pair (211) and a workbench (213) connected with the execution end of the X-axis ball screw pair (212);

frock clamp (22) including install in translation mechanism (221) on workstation (213) top, with first backup pad (222) and second backup pad (223) that the execution end of translation mechanism (221) is connected, one side that second backup pad (223) was kept away from in first backup pad (222) is installed and is rotated air inlet component (224), all be connected with gas-supply pipe (225) through the bearing rotation on the casing of first backup pad (222) and second backup pad (223), gas-supply pipe (225) one end is connected with the execution end of rotating air inlet component (224), the other end extends to and is connected with between first backup pad (222) and second backup pad (223) and admit air dish (227), it has a plurality of flexible chucks (228) to cross to insert on the casing of dish (227) to admit air, the inside of dish (227) is equipped with locking mechanism (226).

2. The four-axis, four-head linkage engraving and milling machine according to claim 1, wherein the translation mechanism (221) comprises a chute (2211) disposed at the top end of the working table (213), and a lead screw (2212) rotatably connected with the chute (2211) through a bearing, one end of the lead screw (2212) extending to the outside is connected with a first motor (2213), the outer surface of the lead screw (2212) is connected with two translation blocks (2214) through a nut, and the two translation blocks (2214) are respectively mounted on the lower surfaces of the first support plate (222) and the second support plate (223).

3. The four-axis, four-head linkage cnc engraving and milling machine of claim 1, characterized in that, rotate air inlet unit (224) including install in bearing plate (2241) of the bottom of second backup pad (223) side surface is kept away from in first backup pad (222), and install in speed reducer (2242) of bearing plate (2241) side surface, the input shaft of speed reducer (2242) is connected with second motor (2243), the output shaft of speed reducer (2242) has worm (2244), worm (2244) through the bearing frame with the upper surface of bearing plate (2241) is connected, the meshing of the top of worm (2244) is connected with worm wheel (2245), worm wheel (2245) cover is located gas-supply pipe (225) surface.

4. The four-axis and four-head linkage engraving and milling machine according to claim 3, wherein the rotary air inlet component (224) further comprises a first rotary joint (2246) mounted on the upper surface of the pressure bearing plate (2241), and the execution end of the first rotary joint (2246) is connected with the air pipe (225).

5. The four-axis, four-head linkage engraving and milling machine according to claim 1, wherein the locking mechanism (226) comprises a sleeve (2261) installed inside the air inlet disc (227) and through which the flexible chuck (228) is inserted, and an inflatable rubber head (2262) installed on the inner wall of the sleeve (2261), wherein a spring (2263) is sleeved outside the inflatable rubber head (2262).

6. The four-axis, four-head linkage engraving and milling machine according to claim 1, wherein a partition plate (2271) fixed on the housing of the sleeve (2261) is installed inside one end of the air inlet disc (227) far away from the flexible chuck (228), and a plurality of air nozzles are fixed on one side surface of the partition plate (2271) and extend into the inflatable rubber head (2262).

7. The four-axis, four-head linkage cnc engraving and milling machine according to claim 1, wherein the translation assembly (21) further comprises a first cleaning mechanism (214) mounted on the upper surface of the X-axis ball screw pair (212), and a second cleaning mechanism (215) mounted on the upper surface of the Y-axis ball screw pair (211), the first cleaning mechanism (214) and the second cleaning mechanism (215) have the same structure, the first cleaning mechanism (214) comprises a concertina type cover (2141) mounted on both side surfaces of the worktable (213), and shielding blades (2142) mounted on the upper surface of the concertina type cover (2141) at equal intervals.

8. The four-axis and four-head linkage cnc engraving and milling machine according to claim 7, wherein the first cleaning mechanism (214) further comprises wind storage boxes (2143) installed at both sides of the X-axis ball screw pair (212), a wind inlet pipe (2148) installed at one side surface where the two wind storage boxes (2143) are far away from each other, a plurality of ash outlets (2144) disposed at both ends of one side surface where the two wind storage boxes (2143) are close to the X-axis ball screw pair (212), and a gas outlet head (2145) disposed between two adjacent ash outlets (2144), wherein the gas outlet head (2145) is installed at one side surface where the two wind storage boxes (2143) are close to the X-axis ball screw pair (212).

9. The four-axis, four-head linkage cnc engraving and milling machine as claimed in claim 8, wherein the first cleaning mechanism (214) further comprises a gear (2146) rotatably connected with the shielding blade (2142) through a rotating shaft, and a rack (2147) embedded in the upper surface of the air storage box (2143), the rack (2147) is engaged with the gear (2146) on the same side.

10. The four-axis, four-head linkage cnc engraving and milling machine of claim 9, wherein, a second rotary joint (2231) is installed on the surface of the second support plate (223) far away from the first support plate (222), the air outlet end of the second rotary joint (2231) is connected with the air inlet end of the air inlet pipe (2148) through a hose.

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