CN105108564B

CN105108564B - Numerically controlled lathe with linear bearing

Info

Publication number: CN105108564B
Application number: CN201510623737.3A
Authority: CN
Inventors: 陈戌连; 丁晓伟
Original assignee: ZHEJIANG JINTANG MACHINE TOOL CO Ltd
Current assignee: ZHEJIANG JINTANG MACHINE TOOL CO Ltd
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2017-05-17
Anticipated expiration: 2035-09-25
Also published as: CN105108564A

Abstract

The invention discloses a numerically controlled lathe with a linear bearing. The numerically controlled lathe comprises a rack shell and a lathe tool assembly and a chip removal mechanism which are arranged in the rack shell; the lathe tool assembly comprises a slide rail, a fixture arranged at one end of the slide rail and a lathe tool which is arranged on the slide rail and can slidably move back and forth on the slide rail; the chip removal mechanism comprises an iron chip collecting tank arranged to be close to one side of the slide rail, the tank bottom of the iron chip collecting tank is provided with a conveyor belt, the output end of the conveyor belt penetrates through the rack shell, an iron chip collecting box is arranged under the output end, the bottom of the iron chip collecting box is provided with a pulley, and the interior of the rack shell is further provided with a side wall chip removal mechanism. According to the numerically controlled lathe with the linear bearing, due to the fact that a driving assembly is arranged, a scraping plate can be effectively driven to move back and forth in the rack shell, and the inner wall of the rack shell can be effectively cleaned.

Description

A kind of numerically controlled lathe for possessing linear bearing

Technical field

The present invention relates to a kind of numerical control device, more particularly to a kind of numerically controlled lathe for possessing linear bearing.

Background technology

The numerically controlled lathe for possessing linear bearing can produce many scrap in the various workpiece of car, in order to ensure lathe just Often run, possess, to work in lathe during timely Scrap produced by which is discharged, the structure of existing chip removal mechanism generally comprises chip area and is arranged on flute bottom Conveyer belt, during chip removal, produced scrap is dropped in chip area, then can by the operating of conveyer belt So that effectively scrap is discharged from the numerically controlled lathe for possess linear bearing.

But the existing numerically controlled lathe for possessing linear bearing is to pass through the part of required car during work Fixture is fixed on rotating disk, is rotated by driven by rotary disc parts at high speeds, and then by lathe tool, on slide rail, sliding is slowly close Rotating disk, last lathe tool are contacted with part, thus can effectively car go out required for part, due to car during rotating disk It is rotation at a high speed, thus produced scrap disorderly will flies, a part is attached to outside the numerically controlled lathe frame for possessing linear bearing On the inwall of shell so that the mobile door in holster shell is blocked when running and cannot be opened or the problem closed, and existing row Bits mechanism is merely able to the passive scrap that waits and drops on chip area, thus can not remove well and be attached on holster shell inwall Scrap.

The content of the invention

In view of the shortcomings of the prior art, it is an object of the invention to provide one kind can effectively remove holster shell The numerically controlled lathe for possessing linear bearing of scrap on inwall.

For achieving the above object, the invention provides following technical scheme：A kind of numerically controlled lathe for possessing linear bearing, bag Including rack shell and the turning tool component being arranged in holster shell and chip removal mechanism, the turning tool component include slide rail, arrange One end of slide rail fixture and be arranged on slide rail can on slide rail the lathe tool of sliding back and forth, the chip removal mechanism includes leaning on The scrap collection groove that nearly slide rail side is arranged, the bottom land of the scrap collection groove is conveyer belt, and the outfan of the conveyer belt is worn Go out holster shell setting, below outfan, be provided with scrap collection box, the bottom of scrap collection box is provided with pulley, outside the frame Be additionally provided with side wall chip removal mechanism in shell, the side wall chip removal mechanism includes scraper plate and scraper plate driven in the holster shell to backhaul Dynamic drive component, the scraper plate are fitted with holster shell inwall setting, and the drive component includes being arranged in holster shell Along slide rail length direction extend fixing axle, be fixed on fixing axle one end motor and in fixing axle sliding cunning Block, the slide block are mutually fixed with scraper plate, and screw rod is coaxially fixed with the motor rotating shaft, and the screw rod is connected with slide block screw thread Connect, the drive circuit for rotating and reverse for driving its timing is additionally provided with the motor, on the slide rail, straight line is arranged with Bearing, is arranged with Linear bearing fixing seat on the linear bearing, the scraper plate is fixed on Linear bearing fixing seat, described The installing hole through the fixed seat is offered on Linear bearing fixing seat, the linear bearing is located in installing hole, installing hole Inwall or so two ends offer annular slot, jump ring is arranged with each described draw-in groove, the jump ring is that snail rolls up bullet Spring, its number of turns is a circle, and circle centre position offers through hole, the diameter of the aperture of the through hole less than linear bearing.

As a further improvement on the present invention, whether the drive circuit includes control circuit, timing circuit, detection scrap Cover serial communication circuit that the detection circuit of holster shell communicated with extraneous host computer and motor rotating Positive and negative rotation circuit, the serial communication circuit, detection circuit, timing circuit with control circuit couple, the timing circuit with Positive and negative rotation circuit is coupled, and positive and negative rotation circuit and motor are coupled, and the motor is direct current generator, and and positive and negative rotation circuit Coupling, the control circuit includes 51 single-chip microcomputers, and the single-chip microcomputer has an I/O mouths, the detection circuit include TCS230 chips with And be attached in holster shell for TCS230 chip detection colored ribbon, the TCS230 chips have power interface, ground interface, The I/O mouth couplings of signal output interface and signal input interface, wherein signal output interface and signal input interface with single-chip microcomputer Connect, power interface connects power supply, ground interface is grounded, and the serial communication circuit includes communication jacks and MAX232 chips, described MAX232 chips have two signal input parts and two signal output parts, one of signal input part and a signal output End is coupled with 51 single-chip microcomputers as one group, and another signal input part and signal output part are used as another group and communication jacks coupling Connect, the timing circuit includes 555 timing chips, the power pins coupling external power source of the chip, grounding pin are grounded, and which is defeated Go out pin coupling positive and negative rotation circuit；Two resistance, one of resistance are coupled to external power source and are drawn with the electric discharge of 555 timing chips Between foot, another resistance is coupled between the electric discharge pin of 555 timing chips and voltage triggered pin；Two electric capacity, wherein One electric capacity is coupled between the voltage triggered pin of 555 timing chips and ground, and another electric capacity is coupled to 555 timing chips Between control voltage pin and ground, the I/O mouths coupling of the 5th pin and 51 single-chip microcomputers of 555 timing chip, the rotating Circuit includes PMOS, and the control end of the PMOS is coupled to the output pin of 555 timing chips, and first end is just being coupled to outside Pole power supply, second rectifies the ground connection to after coupling motor；NMOS tube, the NMOS tube control end are coupled to 555 timing chips Output pin, first end ground connection, the second end reversely couples motor and is followed by external positive power supply.

As a further improvement on the present invention, the slide block offers slide opening and screwed hole, and the fixing axle passes through slide opening Arrange, the screw rod is threadedly coupled with screwed hole.

As a further improvement on the present invention, the colored ribbon is red color band.

As a further improvement on the present invention, the holster shell is provided with safety door, and the safety door includes safety door Body and the connector assembly that handles being fixed on the inside of safety door body near base, and the locating piece that is matched therewith and lock Block, a connector assembly that handles insert base, support, inserting handle and fixing axle comprising door, and the door is inserted one end of base and vertically fixed The top for having support, support is flexibly connected with inserting handle by hinge, and the door to be inserted and be provided with hole in the middle part of base, the fixing axle Spring is cased with axle body, its lower end is inserted in the hole that door is inserted on base, its upper end is provided with chock plug, and the position with the handle of inserting handle Mill out and chock plug diameter identical consent in the side of door connector assembly, chock plug and the consent piston on inserting handle of fixing axle upper end are matched somebody with somebody Close, the lower end of the locating piece is welded on lathe bed, on the inside of its upper end, be provided with closing piece, and mill out on inserting handle and match somebody with somebody with closing piece grafting The lockhole of conjunction, the lower end of the inserting handle are extended in parallel with safety door body downwards, and stretch out the bottom of safety door body.

The invention has the advantages that, by the setting of scraper plate and drive component, it is possible to effectively by driving Component thus can will be attached to holster shell inwall by scraper plate driving scraper plate to move back and forth on the inwall of holster shell On scrap scrape off, feed them in the chip area of lower section, then seen off by conveyer belt, thus can be effective Realization is cleaned up to the scrap on holster shell inwall, compared to the chip removal mechanism of prior art, with more comprehensively Clearing function, and the work that the setting for passing through control circuit just effectively can be coordinated between various pieces, by detecting circuit Setting whether just can effectively detect scrap in holster shell excessive, if scrap excessively so detects that circuit will Send detection signal to control circuit, control circuit will driving timing circuit, timing circuit will drive positive and negative rotation circuit, have The rotating for realizing motor of effect, while the setting by serial communication circuit, people can just pass through host computer pair The setting of 51 single-chip microcomputers is modified, and thus effectively can realize detecting the extension of electric circuit inspection colored ribbon, and scrap Excessive degree, so just can enable the regard that whole side wall chip removal mechanism preferably meets people to go work, it appears more Intellectuality, by being fixed to the linear bearing in Linear bearing fixing seat using jump ring, jump ring fix linear bearing When, first will be the through hole support of volute spring circle centre position big by manpower so as to which aperture is more than linear bearing diameter, so straight Bobbin holds just can be put in Linear bearing fixing seat by through hole, then loosen volute spring, then through hole is changing to Original pore size, such linear bearing will be by volute spring card column so that linear bearing is not easy from linear bearing to fix Spin off in seat, it also avoid iron filings, dust etc. and enter in linear bearing, it is ensured that the normal use of linear bearing.

Description of the drawings

Fig. 1 is the overall structure figure of the numerically controlled lathe for possessing linear bearing of the present invention；

Fig. 2 is the overall structure figure of drive component in Fig. 1；

Circuit diagrams of the Fig. 3 for drive circuit.

Specific embodiment

Referring to figs. 1 to shown in 3, a kind of numerically controlled lathe for possessing linear bearing of the present embodiment, including holster shell 1 and The turning tool component being arranged in holster shell 1 and chip removal mechanism, the turning tool component include slide rail, are arranged on one end of slide rail Fixture and be arranged on slide rail can on slide rail the lathe tool of sliding back and forth, the chip removal mechanism includes arranging near slide rail side Scrap collection groove, the bottom land of the scrap collection groove is conveyer belt, and the outfan of the conveyer belt passes holster shell 1 and sets Put, below outfan, be provided with scrap collection box, the bottom of scrap collection box is provided with pulley, is additionally provided with the holster shell 1 Side wall chip removal mechanism 2, the side wall chip removal mechanism 2 include scraper plate 21 and drive scraper plate 21 to move back and forth in holster shell 1 Drive component 22, the scraper plate 21 fitted with 1 inwall of holster shell setting, and the drive component 22 includes being arranged on outside frame The fixing axle 221 that extends along slide rail length direction in shell 1, it is fixed on the motor 222 of 221 one end of fixing axle and is fixing The slide block 223 of sliding on axle 221, the slide block 223 are mutually fixed with scraper plate 21, are coaxially fixed in 222 rotating shaft of the motor There is screw rod 2221, the screw rod 2221 is threadedly coupled with slide block 223, be additionally provided with the motor 222 and drive its timing The drive circuit 5 for rotating and reverse, is arranged with linear bearing on the slide rail, be arranged with linear bearing solid on the linear bearing Reservation, the scraper plate are fixed on Linear bearing fixing seat, are offered through the fixed seat on described Linear bearing fixing seat Installing hole, the linear bearing is located in installing hole, and inwall of installing hole or so two ends offer annular slot, described Each draw-in groove in be arranged with jump ring, the jump ring is volute spring, and its number of turns is one to enclose, and circle centre position offers through hole, institute The diameter of the aperture less than linear bearing of through hole is stated, lathe will constantly produce scrap, a part of scrap during working Drop on chip removal mechanism, by the chip removal mechanism directly discharge from holster shell 1, another part will descend slowly and lightly in holster shell On 1 inwall, it is attached to above, at this moment chip removal mechanism effectively cannot be cleared up to the scrap of this part, so driving Component 22 will drive scraper plate 21 to move back and forth in holster shell 1, as scraper plate 21 is fitted with 1 inwall of holster shell, So during scraper plate 21 is moved back and forth, the scrap that be attached on 1 inwall of holster shell will be scraped off so as to drop to On chip removal mechanism, as chip removal mechanism is discharged from holster shell 1, so pass through the setting of side wall chip removal mechanism 2, it is possible to Effectively it is engaged with chip removal mechanism and the scrap on 1 inwall of holster shell is emitted, wherein, as shown in Fig. 2 in driving group When part 22 is operated, first fixing axle 221 is fixed in holster shell 1, as shown in figure 1, outside the fixing axle 221 and frame Slide rail inside shell 1 be arranged in parallel, and motor 222 is operated afterwards, rotates its rotary shaft, thus screw rod 2221 will be driven Rotation, at this moment as screw rod 2221 is threadedly coupled with slide block 223, while slide block 223 is sliding is connected to fixing axle 221 On, so during screw rod 2221 is rotated, due to the inhibition of fixing axle 221, screw rod 2221 can not drive Slide block 223 is rotated, thus slide block 223 will be because of the rotation of screw rod 2221 sliding in fixing axle 221, so as to drive scraper plate 21 The sliding in fixing axle 221, just effectively can realize scraper plate 21 in fixing axle by rotating and reverse for motor 222 Move back and forth on 221, this makes it possible to the effect for effectively realizing driving scraper plate 21 to move back and forth inside holster shell 1, its In turning tool component here and chip removal mechanism be prior art, therefore its course of work and principle are not repeated, meanwhile, by adopting The linear bearing in Linear bearing fixing seat is fixed with jump ring, when jump ring fixes linear bearing, is passed through first Manpower will be the through hole support of volute spring circle centre position big so as to which aperture is more than linear bearing diameter, and such linear bearing can just lead to Cross through hole to put in Linear bearing fixing seat, then loosen volute spring, then through hole is changing to original pore size, such as This linear bearing will be by volute spring card column so that linear bearing is not easy to spin off from Linear bearing fixing seat, Avoid iron filings, dust etc. to enter in linear bearing, it is ensured that the normal use of linear bearing so that scraper plate 21 can be more preferable The sliding on slide rail.

Used as a kind of improved specific embodiment, the drive circuit 5 includes control circuit 53, timing circuit 51, inspection Survey scrap whether cover the detection circuit 54 of holster shell 1, the serial communication circuit 55 communicated with extraneous host computer and The positive and negative rotation circuit 52 of motor rotating, the serial communication circuit 55, detection circuit 54, timing circuit 51 with control Circuit 53 is coupled, and the timing circuit 51 is coupled with positive and negative rotation circuit 52, and positive and negative rotation circuit 52 is coupled with motor 222, institute It is direct current generator to state motor 222, and is coupled with positive and negative rotation circuit 52, and the control circuit 53 includes 51 single-chip microcomputers 531, should Single-chip microcomputer 531 has I/O mouths, and the detection circuit 54 includes TCS230 chips 541 and be attached in holster shell 1 supplying The colored ribbon of the detection of TCS230 chips 541, the TCS230 chips have power interface, ground interface, signal output interface and letter Number input interface, wherein signal output interface and signal input interface are coupled with the I/O mouths of single-chip microcomputer, and power interface connects electricity Source, ground interface ground connection, the serial communication circuit 55 include communication jacks 551 and MAX232 chips 552, the MAX232 cores There is piece 552 two signal input parts and two signal output parts, one of signal input part and a signal output part to make Couple with 51 single-chip microcomputers 531 for one group, another signal input part and signal output part are used as another group and 551 coupling of communication jacks Connect, the timing circuit 51 includes 555 timing chips 511, the power pins coupling external power source of the chip, grounding pin connect Ground, its output pin couple positive and negative rotation circuit 52；Two resistance, one of resistance are coupled to external power source and 555 timing cores Between the electric discharge pin of piece 511, another resistance be coupled to the electric discharge pin of 555 timing chips 511 and voltage triggered pin it Between；Two electric capacity, one of electric capacity are coupled between the voltage triggered pin and ground of 555 timing chips 511, another electric capacity It is coupled between the control voltage pin and ground of 555 timing chips 511, the 5th pin of 555 timing chip 511 and 51 is singly The I/O mouths coupling of piece machine 531, the positive and negative rotation circuit 52 include PMOS, and the control end of the PMOS is coupled to 555 timing cores The output pin of piece, first end are coupled to external positive power supply, and second rectifies the ground connection to after coupling motor 222；NMOS tube, The NMOS tube control end is coupled to the output pin of 555 timing chips, and first end is grounded, and the second end reversely couples motor 222 are followed by external positive power supply, using the numerically controlled lathe for possessing linear bearing during, by turning tool component by workpiece Gradual car shaping, shapes in its car, as shown in figure 3, before using side wall chip removal mechanism 2, first will be drive circuit 5 logical on Power supply, then passes through the instruction of host computer by communication jacks 551, in MAX232 chips 552, through MAX232 chips 552 After process, the signal that 51 single-chip microcomputers 531 are capable of identify that will be converted instructions into, then be transmitted to 51 single-chip microcomputers 531 Interior, 51 single-chip microcomputers 531 upon receipt of this signal, internal will be arranged, are then operated, when scrap is attached to outside frame After on shell 1 cover colored ribbon, TCS230 chips 541 cannot just detect colored ribbon, and at this moment TCS230 chips 541 will be single to 51 Piece machine 531 is input into a drive signal, represents that now scrap needs to be cleared up, and such 51 single-chip microcomputer 531 will send one , in timing circuit 51,555 timing chips 511 in timing circuit 51 upon receipt of this signal, will for drive signal Work, during work, external power source will be input in the power pins of 555 timing chips 511 first, fixed to 555 When chip 511 power so that 555 timing chips 511 work, and the electric current of external power source flows through the resistance and electric capacity of two series connection Ground is arrived afterwards, so electric current will be charged to electric capacity by resistance, 2,6 interfaces wherein in figure are respectively low pressure threshold interface and height Pressure threshold value interface, in the charging process of electric capacity, the voltage at its two ends will gradually rise, when electric capacity and 2,6 interfaces coupling one The voltage at end will gradually rise, the output high level of output interface 3, after threshold voltage of its voltage more than 6 interfaces, output Interface 3 exports low level, makes electric capacity be discharged by resistance while opening electric discharge interface 7, the voltage allowed on electric capacity slowly under Drop, after the voltage on electric capacity drops to 2 interface threshold values, the output high level of output interface 3, while the interface 7 that discharges is closed, electricity Appearance will be recharged, and the voltage above which will rise again, after which is increased over the threshold voltage of 6 interfaces, will The output interface 3 for repeating thus effectively to order about 555 timing chips 511 in process above exports a square wave, while By the resistance of the amount of capacity and resistance of electric capacity, the time cycle of the square wave determines that the square wave will be input to rotating afterwards In circuit 52, as shown in FIG., as PMOS is the conducting of control end input low level, so when 555 timing chips 511 are exported When low level, PMOS conducting, simultaneously because the conducting of NMOS tube high level, so at this time NMOS tube is not turned on, electric current Direction be exactly from the bottom up, drive motor 222 rotate, it is assumed that this when for rotate forward, when 555 timing chips 511 it is defeated When going out high level, PMOS is not turned on, and NMOS tube conducting, so as shown in FIG., sense of current will be from lower past On, completely conversely, so the steering of motor 222 at this moment will be with PMOS when the sense of current is turned on PMOS before When pipe is turned on completely conversely, thus for reversion, so during 222 rotating of motor, slide block 223 will be Fixing axle 221 is moved back and forth, so as to drive scraper plate 21 to move back and forth in holster shell 1, thus can effectively by frame Scrap on 1 inwall of shell is scraped off, and realizes the cleaning to 1 inwall of holster shell, it is to avoid due to sliding badge caused by scrap Problem firmly.

Used as a kind of improved specific embodiment, the slide block 223 offers slide opening 3 and screwed hole 4, the fixing axle 221 are arranged through slide opening 3, and the screw rod 2221 is threadedly coupled with screwed hole 4, slide block 223 in fixing axle 221 sliding when Wait, slide opening 3 will be enclosed within fixing axle 221, and anti-limited slip block 223 is departed from fixing axle 221 so that slide block 223 cannot fixed The problem of 221 sliding of axle, while just effectively can be engaged with screw rod 2221 by screwed hole 4, effectively realizes screw rod When 2221 rotation, the effect for driving slide block 223 to move back and forth in fixing axle 221.

Used as a kind of improved specific embodiment, the colored ribbon is red color band, due to the detection that the present embodiment is adopted Chip is TCS230 chips 541, and TCS230 chips 541 are a kind of color detection chips, its color for predominantly detecting have it is red, yellow, It is blue three kinds, so colored ribbon is arranged to into redness here, it is possible to will detect that red instruction is transferred to by MAX232 chips 552 In 51 single-chip microcomputers 531,51 single-chip microcomputers 531 are transferred to this instruction in TCS230 chips 541 again, at this moment TCS230 chips 541 Will start to detect red color band, when scrap is completely covered colored ribbon, mean that now scrap is excessive, then TCS230 chips 541 cannot just detect colored ribbon, thus will send drive signal to 51 single-chip microcomputers 531, such side wall chip removal Mechanism 2 just can be good at the scrap cleared up on 1 inwall of holster shell.

Used as a kind of improved specific embodiment, the holster shell 1 is provided with safety door (not shown), described Safety door includes safety door body and the connector assembly that handles being fixed on the inside of safety door body near base, and matches with which The locating piece and closing piece of conjunction, a connector assembly that handles insert base, support, inserting handle and fixing axle comprising door, and the door inserts base One end be vertically and fixedly provided with support, the top of support is flexibly connected with inserting handle by hinge, the door insert base in the middle part of be provided with Hole, is cased with spring on the axle body of the fixing axle, and its lower end is inserted in the hole that door is inserted on base, and its upper end is provided with chock plug, and The side that door connector assembly is located at the handle of inserting handle mills out and chock plug diameter identical consent, the chock plug of fixing axle upper end with insert Consent piston on handle coordinates, and the lower end of the locating piece is welded on lathe bed, and closing piece is provided with the inside of its upper end, and on inserting handle The lockhole coordinated with closing piece grafting is milled out, the lower end of the inserting handle is extended in parallel with safety door body downwards, and stretches out safety door The bottom of body, when safety door is shut, handling a connector assembly will be stuck with closing piece, so as to effectively prevent in the course of processing It is middle because of ground not level, during processing lathe bed vibrations it is larger caused by safety door slip off automatically or the work caused by artificially opening Part flies out the generation of security incident such as hurt sb.'s feelings, while the lower end of inserting handle is extended in parallel with safety door body downwards, and stretches out peace The bottom of air cock body, can effectively facilitate workman to pull back inserting handle completing processing, make closing piece cross the lockhole on inserting handle, So as to reach the purpose of unblock.

In sum, by the setting of scraper plate 21, it is possible to effectively the inwall of holster shell 1 is cleaned, and is led to Overdrive the setting of component 22, it is possible to effectively drive scraper plate 21 to move back and forth in holster shell 1, to realize cleaning frame The function of 1 inwall of shell, compares existing chip removal mechanism, with more preferable cleaning effect.

The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications Should be regarded as protection scope of the present invention.

Claims

1. a kind of numerically controlled lathe for possessing linear bearing, including holster shell (1) and the lathe tool being arranged in holster shell (1) Component and chip removal mechanism, the turning tool component include slide rail, be arranged on slide rail one end fixture and be arranged on slide rail can The lathe tool of sliding back and forth on slide rail, the chip removal mechanism include the scrap collection groove arranged near slide rail side, the iron filings The bottom land of collecting tank is conveyer belt, and the outfan of the conveyer belt passes holster shell (1) setting, ferrum is provided with below outfan Bits disposable box, the bottom of scrap collection box are provided with pulley, it is characterised in that：Side wall chip removal is additionally provided with the holster shell (1) Mechanism (2), the side wall chip removal mechanism (2) is including scraper plate (21) and drives scraper plate (21) in the holster shell (1) to backhaul Dynamic drive component (22), the scraper plate (21) are fitted with holster shell (1) inwall setting, and the drive component (22) is including setting Put the fixing axle (221) extended along slide rail length direction in holster shell (1), the driving for being fixed on fixing axle (221) one end Motor (222) and in fixing axle (221) sliding slide block (223), the slide block (223) mutually fixed with scraper plate (21), institute State and in motor (222) rotating shaft, be coaxially fixed with screw rod (2221), the screw rod (2221) is threadedly coupled with slide block (223), The drive circuit (5) for rotating and reverse for driving its timing is additionally provided with the motor (222), is arranged with the slide rail Linear bearing, is arranged with Linear bearing fixing seat on the linear bearing, the scraper plate (21) is fixed on Linear bearing fixing seat On, the installing hole through the fixed seat is offered on described Linear bearing fixing seat, the linear bearing is located in installing hole Interior, inwall of installing hole or so two ends offer annular slot, are arranged with jump ring, the jump ring in each described draw-in groove For volute spring, its number of turns is a circle, and circle centre position offers through hole, the diameter of the aperture of the through hole less than linear bearing.

2. the numerically controlled lathe for possessing linear bearing according to claim 1, it is characterised in that：Drive circuit (5) bag Include whether control circuit (53), timing circuit (51), detection scrap cover the detection circuit (54) of holster shell (1), and extraneous Serial communication circuit (55) and the positive and negative rotation circuit (52) of motor rotating that host computer is communicated, the serial lead to Letter circuit (55), detection circuit (54), timing circuit (51) with control circuit (53) couple, the timing circuit (51) with just Circuit for reversing (52) is coupled, and positive and negative rotation circuit (52) is coupled with motor (222), and the motor (222) is unidirectional current Machine, and couple with positive and negative rotation circuit (52), the control circuit (53) includes 51 single-chip microcomputers (531), and the single-chip microcomputer (531) has I/O mouths, the detection circuit (54) is including TCS230 chips (541) and is attached in holster shell (1) for TCS230 chips (541) colored ribbon for detecting, the TCS230 chips (541) are defeated with power interface, ground interface, signal output interface and signal Incoming interface, wherein signal output interface and signal input interface are coupled with the I/O mouths of single-chip microcomputer, and power interface connects power supply, connects Ground interfacing ground, the serial communication circuit (55) include communication jacks (551) and MAX232 chips (552), the MAX232 Chip (552) is with two signal input parts and two signal output parts, one of signal input part and a signal output Insert with communicating as another group with 51 single-chip microcomputers (531) coupling, another signal input part and signal output part as one group at end Mouth (551) coupling, the timing circuit (51) include 555 timing chips (511), the power pins coupling external electrical of the chip Source, grounding pin ground connection, its output pin coupling positive and negative rotation circuit (52)；Two resistance, one of resistance are coupled to outside Between the electric discharge pin of power supply and 555 timing chips (511), another resistance is coupled to the electric discharge of 555 timing chips (511) and draws Between foot and voltage triggered pin；Two electric capacity, one of electric capacity are coupled to the voltage triggered of 555 timing chips (511) and draw Between foot and ground, another electric capacity is coupled between the control voltage pin and ground of 555 timing chips (511), 555 timing The I/O mouths coupling of the 5th pin and 51 single-chip microcomputers (531) of chip (511), the positive and negative rotation circuit (52), should including PMOS The control end of PMOS is coupled to the output pin of 555 timing chips, and first end is coupled to external positive power supply, second rectify to Coupling motor (222) is grounded afterwards；NMOS tube, the NMOS tube control end are coupled to the output pin of 555 timing chips, and first End ground connection, the second end reversely couples motor (222) and is followed by external positive power supply.

3. the numerically controlled lathe for possessing linear bearing according to claim 2, it is characterised in that：The slide block (223) opens up There are slide opening (3) and screwed hole (4), the fixing axle (221) is through slide opening (3) setting, the screw rod (2221) and screwed hole (4) Threaded connection.

4. the numerically controlled lathe for possessing linear bearing according to claim 3, it is characterised in that：The colored ribbon is red color Band.

5. the numerically controlled lathe for possessing linear bearing according to claim 1, it is characterised in that：On the holster shell (1) It is provided with safety door, the safety door includes safety door body and be fixed on the inside of safety door body handling an insert group near base Part, and the locating piece that is matched therewith and closing piece, a connector assembly that handles insert base, support, inserting handle and fixation comprising door Axle, the door are inserted one end of base and are vertically and fixedly provided with support, and the top of support is flexibly connected with inserting handle by hinge, and the door is inserted Hole is provided with the middle part of base, on the axle body of the fixing axle, spring is cased with, its lower end is inserted in the hole that door is inserted on base, thereon End is provided with chock plug, and mills out and chock plug diameter identical consent, fixing axle positioned at the side of door connector assembly with the handle of inserting handle The chock plug of upper end is coordinated with the consent piston on inserting handle, and the lower end of the locating piece is welded on lathe bed, is provided with the inside of its upper end Closing piece, and the lockhole coordinated with closing piece grafting is milled out on inserting handle, the lower end of the inserting handle is parallel with safety door body downwards to prolong Stretch, and stretch out the bottom of safety door body.