CN107718177B - Seven-axis five-linkage wood tenon numerical control machining center and method thereof - Google Patents

Abstract

The invention discloses a seven-axis five-linkage wood tenon numerical control machining center and a method thereof. The center comprises a machine body assembly, a workbench assembly, a cutter holder moving assembly, a cutter holder assembly and a pneumatic and chip removal assembly. The fuselage assembly provides the fixed stay to each assembly, and each part compact design, and small, the workstation assembly can be to various length, the timber work piece of shape carries out clamping and tool point accurate positioning, the blade holder removes two plane moving freedom degrees and two rotational freedom degrees that the assembly realized the blade holder, the three moving freedom degree of cooperation workstation assembly, realize seven five-axis linkage of course of working, the blade holder assembly is to four cutters location clamping and provide cutting rotary power, realize cutter alternate processing through the blade holder rotation, one shot forming, degree of automation is high, wherein the design of novel planer tool has been adopted, and machining quality is improved, pneumatic and chip removal assembly provides aerodynamic force and realizes the chip removal function for the organism.

Description

Seven-axis five-linkage wood tenon numerical control machining center and method thereof

Technical Field

The invention relates to a seven-axis five-linkage numerical control machining center and a method thereof for wooden tenons, in particular to machining of tenons and mortises of various kinds of wood.

Background

With the rising consumption concept of environmental protection and health and the continuous development of building technology, wood with a long history becomes a great hot choice in the product raw material markets of furniture, houses and the like again, and is used as the most important wood tenon machining process for wood machining, most manufacturers still stay at the production level of machining various wood tenons by using old wood planing machines at present by means of the operation experience of teachers of workers, the labor intensity of workers is high, the production efficiency is low, and the tenon machining quality cannot be guaranteed. Meanwhile, some problems commonly exist in the existing numerical control machine tool for processing wood tenons on the market, for example, a numerical control wood house tenon machine disclosed in the patent application publication No. CN10191220A adopts a portal frame type structure, the size is heavy, the occupied area is large, the cost is high, only a single drilling and milling function can be realized, the universality is poor, and for example, a numerical control five-axis tenon machine tool disclosed in the patent application publication No. CN103802180A has the advantages of relatively high automation level, wide processing range and small size, but long wood cannot be processed due to the limitation of a single working table, and high-efficiency operation of simultaneously carrying out feeding and processing cannot be realized.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a seven-axis five-linkage wood tenon numerical control machining center and a method thereof.

A seven-axis five-linkage numerical control wood tenon machining center comprises a machine body assembly, a workbench assembly, a cutter holder moving assembly, a cutter holder assembly, a pneumatic and chip removal assembly, wherein the machine body assembly comprises a base, an upright post, a middle slide carriage guide rail, a workbench lead screw, an upright guide rail, an upright bottom plate and a middle slide carriage lead screw, the workbench assembly comprises a workbench moving mechanism, a wood clamping mechanism and an auxiliary positioning mechanism, the workbench moving mechanism comprises a sliding table, a sliding table slider, an upright bottom plate slider, a workbench nut, an upright nut, a workbench driving motor and an upright driving motor, the wood clamping mechanism comprises a front workbench, a pneumatic component, a clamping plate and a rear workbench, the auxiliary positioning mechanism comprises a backer and a laser range finder, the cutter holder moving assembly comprises a plane moving mechanism and a double-rotating shaft mechanism, the plane moving mechanism comprises a middle slide carriage, a middle slide carriage sliding block, a middle slide carriage nut, a middle slide carriage driving motor, a milling head seat screw rod, a milling head seat driving motor, a milling head seat sliding block, a milling head seat nut and a milling head seat guide rail, the double-rotating-shaft mechanism comprises a milling head seat, a rotating table motor reducer, a rotating table connecting assembly, a rotating table, a cutter holder rotating motor reducer, a rotating cutter seat and an encoder, the cutter seat assembly comprises a central double-shaft motor, a lateral single-shaft motor, a planer tool and a cutter shaft, and the pneumatic and chip removal assembly comprises an adsorption head, a chip removal pipeline, a chip removal collecting box and a pneumatic system;

the workbench assembly, the tool apron moving assembly and the machine body assembly are movably connected, the pneumatic and chip removal assembly is fixedly connected on the machine body assembly, the tool apron assembly and the tool apron moving assembly are rotatably connected, a workbench guide rail and an upright post guide rail are connected on a base through bolts, a workbench lead screw and an upright post lead screw are connected with the base through a bearing seat, an upright post bottom plate is fixedly connected with an upright post, a middle slide carriage guide rail is connected with the upper part of the upright post through a bolt, the middle slide carriage lead screw is fixedly connected with the upper part of the upright post through a bearing seat, a slide table is fixedly connected with a slide table slider, the slider is in sliding fit with the workbench guide rail, an upright post bottom plate is fixedly connected with the upright post bottom plate slider, the upright post bottom plate slider is in sliding fit with the upright post guide rail, a workbench nut is fixedly connected with the bottom of the workbench, the upright post nut is fixedly connected with the bottom of the upright post and is matched with the upright post lead screw, and a workbench driving motor is in transmission with the workbench lead screw, the upright post driving motor is in matched transmission with an upright post lead screw, the pneumatic component is movably connected with the workbench, the clamping plate is fixedly connected with the pneumatic component, the rear workbench has the same structure as the front workbench, the backer is fixed on the workbench, the bottom of the laser range finder is fixed with the upright post, the middle slide carriage is in bolted connection with a middle slide carriage slider and a middle slide carriage nut, the middle slide carriage slider is movably connected with a middle slide carriage guide rail, the middle slide carriage nut is in matched connection with the middle slide carriage lead screw, the middle slide carriage driving motor is in coupled connection with the middle slide carriage lead screw through a coupler, the middle slide carriage is in bolted connection with a milling head seat lead screw and a milling head seat guide rail, the milling head seat upper bolt is connected with a milling head seat slider and a milling head seat nut, the milling head seat slider is in movable fit with the milling head seat guide rail, the milling head seat driving motor is in coupled connection with the milling head seat lead screw, the rotary table motor is fixedly arranged inside the milling head seat, revolving stage motor reduction gear and motor cooperation, and through revolving stage coupling assembling and revolving stage rotatable coupling, the installation form of blade holder rotating part is the same with the revolving stage, the blade holder rotating electrical machines passes through reduction gear output power to rotatory blade holder, the encoder is installed inside the milling head seat, central authorities' biax motor is fixed with side direction unipolar motor, each becomes 90 degrees vertical arrangements with biax motor about the unipolar motor, tool shaft and motor shaft link firmly, planer tool and one of them tool shaft fixed mounting, it links firmly to adsorb head and chip removal pipeline end, the chip removal pipeline other end leads to the saw-dust collecting box, collecting box and organism link firmly, pneumatic system and stand upper portion are fixed.

The utility model discloses a laser range finder, including stand bottom plate, left and right sides slip table, guide rail slider, workstation lead screw, stand lead screw, form triaxial movable structure, centre gripping distance can adjust around preceding workstation and the back workstation, be provided with location backer and pneumatic clamping component mechanism on the anchor clamps, laser range finder is just to processing timber, when one row of four double workstations is in the manufacturing procedure, another row is in the material loading process.

The middle slide carriage is horizontally arranged in the transverse direction, and the milling head seat is movably connected with the middle slide carriage and is longitudinally arranged.

The revolving stage motor pass through the reduction gear and be connected with the rotation axis, the blade holder rotating electrical machines passes through the reduction gear and is connected with rotatory blade holder, the rotation center line between them is strict perpendicular, and the nodical is at the rotating electrical machines center, two rotary motion of revolving stage and blade holder can realize 0 to 180 degrees arbitrary angular rotation.

The cutter shaft can clamp a cutter according to a working procedure of processing a target timber workpiece, the double-spindle motor is used as a power source for working procedure operations with large working load such as planing and sawing, one double-face processing can be realized through reasonable clamping and the matching of four working tables, or a left workpiece and a right workpiece are processed simultaneously.

The planer tool adopts a point contact type spiral cutter shaft, six axial spiral grooves and radial staggered spiral line chip removal grooves are formed in the cutter shaft, blades are spirally distributed and arranged in the axis direction through an axial positioning surface and a cutter seat surface, the groove edge of a cutting edge on one side of each chip groove is lower than the height of the cutting edge, the cutting edge is not parallel to the center line of the cutter shaft, a shearing and beveling angle is formed, and the cutting edge and wood realize point contact when the planer tool is planed.

The seven-axis five-linkage wood tenon numerical control machining center and the machining method thereof comprise the following steps:

the method comprises the following steps:

1) clamping a timber workpiece on a front workbench, a rear workbench or both in a matching way by means of backer;

2) starting a pneumatic assembly to clamp a timber workpiece, measuring distance data of a timber processing point through a laser range finder, feeding the data back to a control system, and adjusting the displacement of a lead screw of an upright column to realize that a cutter is aligned to the position of a tool setting point;

3) the middle slide carriage and the milling head seat realize two planar moving freedom degrees through the lead screw guide rail, and the rotary table and the cutter seat realize two spatial rotating freedom degrees through the driving of a servo motor, so that seven-axis five-axis linkage processing is realized;

4) the cutter shaft is processed by switching to sawing, planing, milling and drilling corresponding cutters according to the processing procedure;

5) in the processing process, the adsorption head adsorbs the generated sawdust by using air pressure difference when a cutter cuts, and the sawdust enters the collection box along with the scrap discharge pipeline;

6) and after the machining is finished, retracting the cutter, taking out the workpiece and feeding, and simultaneously moving the working heads to another row of the workbench with finished feeding for machining.

The seven-axis five-linkage wood tenon numerical control machining center adopts the design of the C-shaped upright post, the base, the workbench, the cutter, the pneumatic system and other components are vertically and uniformly arranged, the space is fully utilized, the machine body volume is reduced, the accurate positioning of the cutter point can be realized through the backer laser range finder, the design of the double rows of four workbenches can realize that one row is in the machining process, the other row is in the feeding process, thereby improving the working efficiency, the front workbench and the rear workbench can be matched and clamped to realize the machining of long wood, the two moving freedom degrees and the two rotating freedom degrees of the cutter holder moving assembly are mutually matched with the upright post moving freedom degree and the two workbench moving freedom degrees of the workbench assembly, the seven-axis five-linkage machining mode is realized, the central double-spindle motor can realize the simultaneous machining of two surfaces or the simultaneous machining of two workpieces, the machining range is widened, and the working flexibility is improved, and the processing technologies such as plane cutter and real-time chip removal are adopted, so that the processing quality is greatly improved.

Drawings

FIG. 1 is an overall schematic view of a numerical control wood tenon machining center according to the present invention;

FIG. 2 is a front view of the machine body assembly of the numerical control wood tenon machining center of the invention;

FIG. 3 is a left side view of the machine body assembly of the numerical control wood tenon machining center of the invention;

FIG. 4 is a schematic view of a worktable assembly of a numerical control machining center for wood tenons according to the present invention;

FIG. 5 is a front view of each mechanism of the worktable assembly of the numerical control wood tenon machining center of the invention;

FIG. 6 is a left side view of each mechanism of the worktable assembly of the numerical control machining center for the wooden tenon of the invention;

FIG. 7 is a schematic view of a tool holder moving assembly of the numerically controlled wood tenon machining center according to the present invention;

FIG. 8 is a front view of the tool post moving assembly of the present invention;

FIG. 9 is a top view of the tool post moving assembly of the numerically controlled wood tenon machining center according to the present invention;

FIG. 10 is a left side view of the mechanisms of the tool apron moving assembly of the numerical control wood tenon machining center according to the present invention;

FIG. 11 is a schematic view of a tool holder assembly of the numerically controlled wood tenon machining center according to the present invention;

FIG. 12 is a schematic view of a planer tool of the present invention;

FIG. 13 is a schematic view of a chip removal and pneumatic assembly of the present invention;

in the figure, a machine body assembly 1, a workbench assembly 2, a tool apron moving assembly 3, a tool apron assembly 4, a pneumatic and chip discharging assembly 5, a base 11, an upright post 12, a middle slide rail 13, a workbench rail 14, a workbench screw 15, an upright screw 16, an upright rail 17, an upright bottom plate 18, a middle slide rail screw 19, a workbench moving mechanism 21, a timber clamping mechanism 22, an auxiliary positioning mechanism 23, a sliding table 211, a sliding table slider 212, an upright bottom plate slider 213, a workbench nut 214, an upright nut 215, a workbench driving motor 216, an upright driving motor 217, a front workbench 221, a pneumatic component 222, a clamping plate 223, a rear workbench 224, a backer 231, a laser range finder 232, a plane moving mechanism 31, a double-rotating shaft mechanism 32, a middle slide plate 311, a middle slide plate slider 312, a middle slide plate nut 313, a middle slide plate driving motor 314, a milling head seat screw 315, a milling head seat driving motor 316, a, The milling head seat slide 317, the milling head seat nut 318, the milling head seat guide 319, the milling head seat 321, the rotary table motor 322, the rotary table motor reducer 323, the rotary table connecting assembly 324, the rotary table 325, the tool apron rotating motor 326, the tool apron rotating motor reducer 327, the rotary tool apron 328, the encoder 329, the central double-shaft motor 41, the lateral single-shaft motor 42, the planer tool 43, the tool shaft 44, the adsorption head 51, the chip removal pipeline 52, the chip collection box 53 and the pneumatic system 54.

Detailed Description

As shown in fig. 1, the numerical control wood tenon machining center includes a machine body assembly 1, a workbench assembly 2, a tool apron moving assembly 3, a tool apron assembly 4, and a pneumatic and chip removal assembly 5.

The workbench assembly 2, the tool apron moving assembly 3 and the machine body assembly 1 are movably connected, the pneumatic and chip removal assembly 5 is fixedly connected on the machine body assembly 1, and the tool apron assembly 4 and the tool apron moving assembly 3 are rotatably connected.

The machine body assembly 1 provides fixed support for each assembly, the workbench assembly 2 clamps and positions a positioning point of a wood workpiece with various lengths and shapes, the tool apron moving assembly 3 realizes two planar moving degrees of freedom and two rotational degrees of freedom of the tool apron, the tool apron assembly 4 realizes positioning and clamping of four tools and provides cutting rotation power, and the pneumatic and chip removal assembly 5 provides aerodynamic force for the machine body and realizes a chip removal function.

As shown in fig. 2 and 3, the machine body assembly 1 includes a base 11, a column 12, a middle slide rail 13, a table rail 14, a table screw 15, a column screw 16, a column rail 17, a column base plate 18, and a middle slide rail 19.

A workbench guide rail 14 and an upright post guide rail 17 are connected to the base 11 through bolts, a workbench lead screw 15 and an upright post lead screw 16 are connected with the base 11 through a bearing seat, an upright post bottom plate 18 is fixedly connected with the upright post 12, a middle slide carriage guide rail 13 is connected with the upper part of the upright post 12 through bolts, and a middle slide carriage lead screw 19 is fixedly connected with the upper part of the upright post 12 through the bearing seat.

During operation, the machine body assembly 1 mainly provides supporting and positioning for the fixed parts of the moving mechanisms such as the bearing seats, the lead screws and the guide rails, and the components such as the base, the workbench, the cutter and the pneumatic system are vertically and uniformly arranged by the design of the C-shaped upright post 16, so that the space is fully utilized, and the whole gravity center falls in a stable supporting area through the reasonable balance weight of each assembly.

As shown in fig. 4, the working table assembly 2 includes a working table moving mechanism 21, a timber clamping mechanism 22, and an auxiliary positioning mechanism 23, as shown in fig. 5 and 6, the working table moving mechanism 21 includes a sliding table 211, a sliding table slider 212, an upright base plate slider 213, a working table nut 214, an upright nut 215, a working table driving motor 216, and an upright driving motor 217, the timber clamping mechanism 22 includes a front working table 221, a pneumatic component 222, a clamping plate 223, and a rear working table 224, and the auxiliary positioning mechanism 23 includes a backer 231 and a laser range finder 232.

The sliding table 211 is fixedly connected with the sliding table sliding block 212, the sliding block 212 is in sliding fit with the workbench guide rail 14, the upright column bottom plate is fixedly connected with the upright column sliding block 213, the upright column sliding block 213 is in sliding fit with the upright column guide rail 17, the workbench nut 214 is fixedly connected with the bottom of the workbench and is matched with the workbench lead screw 15, the upright column nut 215 is fixedly connected with the bottom of the upright column and is matched with the upright column lead screw 16, the workbench driving motor 216 is in matched transmission with the lead screw 214, the upright column driving motor 217 is in matched transmission with the lead screw 215, the pneumatic assembly 222 is movably connected with the workbench 221, the clamping plate 223 is fixedly connected with the pneumatic assembly 222, the rear workbench 224 is identical in structure with the front workbench 221, the backer 231 is fixed on the workbench, and the bottom of the laser range finder 232 is fixed with the upright column.

During operation, the stand bottom plate, left and right sides slip table 211 all can be under guide rail slider's direction, carry out linear displacement by lead screw drive, thereby realize the cutter before the processing, the triaxial of work piece removes, provide the motion basis for the tool setting operation, preceding workstation 221 and back workstation 224's cooperation, can realize the centre gripping processing around to long timber, when the timber clamping, can tentatively fix a position the timber work piece through backer 231, then pneumatic component 222 work, descend through splint 223, press from both sides tight timber work piece, timber processing point distance data is measured to rethread laser range finder 232, feed back to control system, through adjustment stand lead screw displacement, finally realize the accurate tool setting point position of finding of cutter, guarantee the accuracy of follow-up cutter cutting orbit. The design of the double rows of the four working tables can realize that one row is in a machining process and the other row is in a feeding process, so that the working efficiency is improved.

As shown in fig. 7, the tool apron moving assembly 3 includes a plane moving mechanism 31 and a dual-rotation-axis mechanism 32, as shown in fig. 8, 9 and 10, the plane moving mechanism 31 includes a middle slide carriage 311, a middle slide carriage slide block 312, a middle slide carriage nut 313, a middle slide carriage driving motor 314, a milling head base lead screw 315, a milling head base driving motor 316, a milling head base slide block 317, a milling head base nut 318 and a milling head base guide rail 319, and the dual-rotation-axis mechanism 32 includes a milling head base 321, a rotation base motor 322, a rotation base motor reducer 323, a rotation base connecting assembly 324, a rotation base 325, a tool apron rotation motor 326, a tool apron rotation motor reducer 327, a rotation tool apron 328 and an encoder 329.

A middle slide carriage slider 312 and a middle slide carriage nut 313 are connected on a middle slide carriage 311 through bolts, the middle slide carriage slider 312 is movably connected with a middle slide carriage guide rail 13, the middle slide carriage nut 313 is connected with a middle slide carriage lead screw 19 in a matching way, a middle slide carriage driving motor 314 is connected with the middle slide carriage lead screw 19 through a coupler, a milling head seat lead screw 315 is connected with a milling head seat guide rail 319 through bolts, a milling head seat slider 317 and a milling head seat nut 318 are connected on a milling head seat 321 through bolts, the milling head seat slider 317 is movably matched with the milling head seat guide rail 319, the milling head seat nut 318 is matched with the milling head seat lead screw 315, the milling head seat driving motor 316 is connected with the milling head seat lead screw 315 through a coupler, a rotary table motor 322 is fixedly arranged inside the milling head seat 321, a rotary table motor reducer 323 is matched with a motor and is rotatably connected with a rotary table 325 through a rotary table connecting component 324, and the installation form of the rotary table rotating part of the tool apron is the same as that of the rotary table, the tool post rotating motor 326 outputs power to a rotating tool post 328 through a speed reducer 327, and an encoder 329 is installed inside the head base 321.

In operation, well carriage 311 is under the guide effect of well carriage guide rail 13 and slider 312, through motor 314 drive lead screw 19, drive down at nut 313, realize accurate horizontal linear displacement, the motion mode of milling head seat 321 is similar with well carriage 311, realize vertical accurate displacement on well carriage 311 through the lead screw guide rail, these two freedom of movement make the blade holder can reach planar optional position, thereby realize pinpointing, revolving stage motor 322 drives the rotation axis motion through reduction gear 323, revolving stage coupling assembling 324 realizes the rotation of revolving stage 325, blade holder rotating electrical machines 326 installed on revolving stage 325 can drive rotatory blade holder 328 through reduction gear 327 again and rotate. Two rotary motion of revolving stage 325 and blade holder 328 can realize 0 to 180 degrees arbitrary angle rotations, so both cooperate each other, can realize that the cutter is to the processing of the space optional position of timber work piece, and pivoted angle data feedback to encoder 329, through the contrast correction with the procedure, accurate output rotation volume. Two moving degrees of freedom and two rotating degrees of freedom of the tool apron moving assembly are matched with the upright post moving degree of freedom and the two working table moving degrees of freedom of the working table assembly, so that a seven-axis five-linkage processing mode is realized, the processing range is widened, and the working flexibility is improved.

As shown in fig. 11, the tool holder assembly 4 includes a central two-axis motor 41, a lateral one-axis motor 42, a tool shaft 44, and a planning tool 43.

The central double-shaft motor 41 and the lateral single-shaft motor 42 are fixed, the upper and lower single-shaft motors 42 are respectively and vertically arranged at 90 degrees with the double-shaft motor 41, the cutter shaft 44 is fixedly connected with a motor shaft, and the planer tool 43 and one of the cutter shafts 44 are fixedly installed.

During operation, the cutter can be clamped on the cutter shaft 44 according to the procedure of processing a target timber workpiece, corresponding cutters such as sawing, planing, milling and drilling are generally adopted, the output power of the double-spindle motor is high, the double-spindle motor can be used as a power source for large-workload procedure operations such as planing and sawing, one-piece two-side processing can be realized through reasonable clamping and matching of four working tables, or two left and right workpieces are simultaneously processed, the working efficiency is improved, the lateral single-spindle motor 42 drives the cutter respectively, and the power of the lateral single-spindle motor is smaller than that of the double-spindle motor 41. As the most widely used planer tool in wood tenon processing, the planer tool 43 of the present invention adopts a point contact type spiral cutter shaft, as shown in fig. 12, six axial spiral grooves and radially staggered spiral grooves are arranged on the cutter shaft, the blades are spirally arranged in the axial direction through an axial positioning surface and a cutter seat surface, which is helpful for heat dissipation and chip removal of the cutter shaft, the groove edge of a cutting edge on one side of the chip groove is lower than the height of the cutting edge, the cutting edge is not parallel to the central line of the cutter shaft, so that a shearing and beveling angle is formed, the cutting edge and wood realize point contact when the planer tool is used for planing, the line contact form of the conventional sectional type spiral cutter is changed, the impact force at the moment of cutting can be greatly reduced, and the effects of energy saving and noise reduction are achieved.

As shown in fig. 13, the pneumatic and chip discharging assembly 5 includes a suction head 51, a chip discharging pipe 52, a chip collecting box 53, and a pneumatic system 54.

The adsorption head 51 is fixedly connected with the tail end of the chip discharge pipeline 52, the other end of the chip discharge pipeline is communicated with the chip collecting box 53, the collecting box 53 is fixedly connected with the machine body, and the pneumatic system 54 is fixed with the upper part of the upright post.

When the pneumatic machine works, the adsorption head 51 is used for synchronously adsorbing the generated sawdust by utilizing the air pressure difference during cutting along with the cutter, the sawdust enters the collection box 53 along with the scrap discharge pipeline 52, the pneumatic system 54 and accessories thereof provide the air pressure difference required for adsorbing the sawdust and the pneumatic force for clamping the workpiece by the workbench, and the pneumatic machine structurally also becomes a part of counterweight stable whole.

Claims (5)

1. The utility model provides a seven five linkage wood tenon numerical control machining centers of axle, its characterized in that includes fuselage assembly (1), workstation assembly (2), blade holder removal assembly (3), blade holder assembly (4), pneumatics and chip removal assembly (5), fuselage assembly (1) including base (11), stand (12), well carriage apron guide rail (13), workstation guide rail (14), workstation lead screw (15), stand lead screw (16), stand guide rail (17), stand bottom plate (18), well carriage apron lead screw (19), workstation assembly (2) including workstation moving mechanism (21), timber clamping mechanism (22), auxiliary positioning mechanism (23), workstation moving mechanism (21) including slip table (211), slip table slider (212), stand bottom plate slider (213), workstation nut (214), stand nut (215), workstation driving motor (216), Upright post driving motor (217), timber clamping mechanism (22) including preceding workstation (221), pneumatic component (222), splint (223), back workstation (224), supplementary positioning mechanism (23) including leaning on mountain (231), laser range finder (232), blade holder remove assembly (3) including plane moving mechanism (31), two pivot mechanism (32), plane moving mechanism (31) including well carriage apron (311), well carriage apron slider (312), well carriage apron nut (313), well carriage apron driving motor (314), cutter head seat lead screw (315), cutter head seat driving motor (316), cutter head seat slider (317), cutter head seat nut (318), cutter head seat guide rail (319), two pivot mechanism (32) including cutter head seat (321), revolving stage motor (322), revolving stage motor reduction gear (323), revolving stage coupling assembling (324), The wood chip cutting machine comprises a rotating table (325), a cutter holder rotating motor (326), a cutter holder rotating motor reducer (327), a rotating cutter holder (328) and an encoder (329), wherein the cutter holder assembly (4) comprises a central double-shaft motor (41), a lateral single-shaft motor (42), a planing tool (43) and a cutter shaft (44), and the pneumatic and chip removal assembly (5) comprises an adsorption head (51), a chip removal pipeline (52), a chip removal collecting box (53) and a pneumatic system (54);

the workbench assembly (2), the tool apron moving assembly (3) and the machine body assembly (1) are movably connected, the pneumatic and chip removal assembly (5) is fixedly connected on the machine body assembly (1), the tool apron assembly (4) and the tool apron moving assembly (3) are rotatably connected, a base (11) is connected with a workbench guide rail (14) and an upright guide rail (17) through bolts, a workbench lead screw (15) and an upright lead screw (16) are connected with the base (11) through a bearing seat, an upright base plate (18) is fixedly connected with an upright post (12), a middle slide carriage guide rail (13) is connected with the upper part of the upright post (12) through bolts, a middle slide carriage lead screw (19) is fixedly connected with the upper part of the upright post (12) through a bearing seat, a sliding table (211) is fixedly connected with a sliding table slider (212), the sliding table slider (212) is in sliding fit with the workbench guide rail (14), the upright base plate is fixedly connected with an upright base plate slider (213), and the upright base plate slider (213) is in sliding fit with the upright guide rail (17), the worktable nut (214) is fixedly connected with the bottom of the worktable, the worktable nut (214) is matched with the worktable screw rod (15), the upright post nut (215) is fixedly connected with the bottom of the upright post and is matched with the upright post screw rod (16), the worktable driving motor (216) is matched and driven with the worktable screw rod (15), the upright post driving motor (217) is matched and driven with the upright post screw rod (16), the pneumatic component (222) is movably connected with the front worktable (221), the clamping plate (223) is fixedly connected with the pneumatic component (222), the rear worktable (224) is structurally the same as the front worktable (221), the backer (231) is fixed on the worktable, the bottom of the laser range finder (232) is fixed with the upright post, the middle slide carriage (311) is in bolted connection with the middle slide carriage slider (312) and the middle slide carriage nut (313), the middle slide carriage slider (312) is movably connected with the middle slide carriage guide rail (13), and the middle slide carriage nut (313) is in matched and connected with the middle slide carriage screw rod (19), the middle slide carriage driving motor (314) is connected with the middle slide carriage lead screw (19) through a coupler, the middle slide carriage (311) is in bolted connection with a milling head seat lead screw (315) and a milling head seat guide rail (319), the milling head seat (321) is in bolted connection with a milling head seat slider (317) and a milling head seat nut (318), the milling head seat slider (317) is movably matched with the milling head seat guide rail (319), the milling head seat nut (318) is matched with the milling head seat lead screw (315), the milling head seat driving motor (316) is connected with the milling head seat lead screw (315) through the coupler, the rotating table motor (322) is fixedly arranged in the milling head seat (321), the rotating table motor reducer (323) is matched with the motor and is rotatably connected with the rotating table (325) through the rotating table connecting component (324), the installation form of the rotating part of the cutter seat is the same as that of the rotating table, the cutter seat rotating motor (326) outputs power to the rotating cutter seat (328) through the cutter seat rotating motor reducer (327), the encoder (329) is installed inside the milling head seat (321), the central double-shaft motor (41) and the lateral single-shaft motor (42) are fixed, the upper and lower of the lateral single-shaft motor (42) are respectively and vertically arranged at 90 degrees with the central double-shaft motor (41), the cutter shaft (44) is fixedly connected with the motor shaft, the planer tool (43) is fixedly installed with one of the cutter shafts (44), the adsorption head (51) is fixedly connected with the tail end of the chip removal pipeline (52), the other end of the chip removal pipeline is communicated with the chip collecting box (53), the chip collecting box (53) is fixedly connected with the machine body, and the pneumatic system (54) is fixed with the upper part of the upright post; the three-axis movable type wood processing machine is characterized in that a three-axis movable type structure is formed by an upright column bottom plate, a left sliding table (211), a right sliding table (211), a guide rail sliding block, a workbench screw rod (15) and an upright column screw rod (16), the front clamping distance and the rear clamping distance of a front workbench (221) and a rear workbench (224) can be adjusted, a backer (231) and a pneumatic assembly (222) mechanism are arranged on a clamp, a laser range finder (232) is opposite to processed wood, and when two rows of four workbenches are in a processing procedure, the other row of four workbenches is in a feeding procedure; the middle slide carriage (311) is horizontally arranged, and the milling head seat (321) is movably connected with the middle slide carriage (311) and longitudinally arranged.

2. The numerical control machining center for the seven-axis five-linkage wood tenon as claimed in claim 1, wherein the rotating table motor (322) is connected with the rotating shaft through a rotating table motor reducer (323), the tool apron rotating motor (326) is connected with the rotating tool apron (328) through a tool apron rotating motor reducer (327), the rotating center lines of the two are strictly vertical, the intersection point is at the center of the tool apron rotating motor (326), and the two rotating motions of the rotating table (325) and the rotating tool apron (328) can realize any angle rotation of 0 to 180 degrees.

3. The numerical control machining center for the seven-shaft five-linkage wood tenon according to claim 1, wherein the cutter shaft (44) can clamp a cutter according to a process of machining a target wood workpiece, and the central double-shaft motor (41) is used as a power source for a process operation with a large working load, so that one-piece two-side machining or simultaneous machining of a left workpiece and a right workpiece can be realized through reasonable clamping and matching of four working tables.

4. The numerical control machining center of the seven-axis five-linkage wood tenon as claimed in claim 1, wherein the planer tool (43) adopts a point contact type spiral tool shaft, six axial spiral grooves and radial staggered spiral line distribution chip grooves are formed in the tool shaft, blades are spirally distributed and arranged through an axial positioning surface and a tool apron surface in the axial direction, the groove edge of a cutting edge on one side of each chip groove is lower than the height of the cutting edge, the cutting edge is not parallel to the central line of the tool shaft, and a shearing and beveling angle is formed, so that the cutting edge and wood realize point contact when the planer tool is used for planing.

5. The machining method of the seven-axis five-linkage wood tenon numerical control machining center applied to the claim 1 is characterized by comprising the following steps of:

1) clamping a timber workpiece on a front workbench (221), a rear workbench (224) or both in a matching way by virtue of a backrest (231);

2) starting a pneumatic assembly (222), clamping a timber workpiece, measuring distance data of a timber processing point through a laser range finder (232), feeding back the data to a control system, and realizing that a cutter is aligned to the position of a tool setting point by adjusting the displacement of a lead screw of an upright column;

3) the middle slide carriage (311) and the milling head seat (321) realize two planar moving degrees of freedom through a lead screw guide rail, and the rotary table (325) and the rotary tool holder (328) realize two spatial rotational degrees of freedom through the driving of a servo motor, so that seven-axis five-axis linkage machining is realized;

4) the cutter shaft (44) is processed by switching to sawing, planing, milling and drilling corresponding cutters according to the processing procedures;

5) in the processing process, the adsorption head (51) adsorbs the generated sawdust by using air pressure difference when a cutter cuts, and the sawdust enters the sawdust collection box (53) along with the sawdust discharge pipeline (52);

6) and after the machining is finished, retracting the cutter, taking out the workpiece and feeding, and simultaneously moving the working heads to another row of the workbench with finished feeding for machining.

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