CN105014473A

CN105014473A - Numerical control lathe

Info

Publication number: CN105014473A
Application number: CN201510525873.9A
Authority: CN
Inventors: 张利
Original assignee: Wenzhou Zhihui Intellectual Property Consulting Co Ltd
Current assignee: Wenzhou Zhihui Intellectual Property Consulting Co Ltd
Priority date: 2015-08-25
Filing date: 2015-08-25
Publication date: 2015-11-04
Anticipated expiration: 2035-08-25
Also published as: CN105014473B

Abstract

The invention discloses a numerical control lathe. The numerical control lathe comprises a rack casing as well as a lathe tool assembly and a chip removal mechanism which are arranged in the rack casing, wherein the lathe tool assembly comprises a sliding rail, a clamp arranged at one end of the sliding rail and a lathe tool which is arranged on the sliding rail and can slide on the sliding rail back and forth; the chip removal mechanism comprises an iron chip collection tank close to one side of the sliding rail, a conveying belt is arranged at the bottom of the iron chip collection tank, the output end of the conveying belt penetrates out of the rack casing, an iron chip collection box is arranged below the output end, pulleys are arranged at the bottom of the iron chip collection box, an auxiliary chip removal mechanism is further arranged in the rack casing and comprises a scraping plate and a drive assembly for driving the scraping plate to move back and forth in the rack casing, and the scraping plate is closely attached to the inner wall of the rack casing. According to the numerical control lathe, the scraping plate can be effectively driven to move back and forth in the rack casing by the drive assembly, and the inner wall of the rack casing can be effectively cleaned.

Description

A kind of numerically controlled lathe

Technical field

The present invention relates to a kind of numerical control device, relate to a kind of numerically controlled lathe in particular.

Background technology

Numerically controlled lathe can produce a lot of scrap when the various workpiece of car, in order to ensure the normal operation of lathe, numerically controlled lathe just needs be equipped with chip removal mechanism, timely the scrap that it produces is discharged in the process of lathe work, the structure of existing chip removal mechanism roughly comprises chip area and is arranged on the conveyer belt at the bottom of flute, in the process of chip removal, the scrap produced will drop in chip area, then just can effectively be discharged in numerically controlled lathe by scrap by the running of conveyer belt.

But existing numerically controlled lathe is be fixed on rotating disk by the parts of required car by fixture in the process of work, rotated by driven by rotary disc parts at high speeds, then by lathe tool on slide rail slippage slowly near rotating disk, last lathe tool contacts with parts, so just effectively can go out required parts by car, because the process turntable of car is High Rotation Speed, thus produced scrap will disorderly fly, a part is attached on the inwall of numerically controlled lathe holster shell, the problem that cannot open or close is blocked when moving door in holster shell is run, and existing chip removal mechanism is merely able to the passive scrap that waits and drops on chip area, thus the scrap be attached on holster shell inwall can not well be removed.

Summary of the invention

For the deficiency that prior art exists, the object of the present invention is to provide a kind of can the effective numerically controlled lathe of scrap on cleaning machine rack enclosure inwall.

For achieving the above object, the invention provides following technical scheme: a kind of numerically controlled lathe, the turning tool component comprising holster shell and be arranged in holster shell and chip removal mechanism, described turning tool component comprises slide rail, be arranged on the fixture of one end of slide rail and be arranged on slide rail, can the lathe tool of slippage back and forth on slide rail, described chip removal mechanism comprises the scrap collection groove arranged near slide rail side, the bottom land of described scrap collection groove is conveyer belt, the output of described conveyer belt passes holster shell and arranges, the below of output is provided with scrap collection box, the bottom of scrap collection box is provided with pulley, auxiliary chip removal mechanism is also provided with in described holster shell, the driven unit that described auxiliary chip removal mechanism comprises scraper plate and drives scraper plate to move back and forth in holster shell, described scraper plate and holster shell inwall are fitted and are arranged, described driven unit comprises the fixed axis be arranged on along the extension of slide rail length direction in holster shell, be fixed on the drive motors of fixed axis one end and the slide block of slippage on fixed axis, described slide block and scraper plate fix, described drive motors rotating shaft is coaxially fixed with screw rod, described screw rod is threaded with slide block, described drive motors is also provided with the drive circuit rotated and reverse driving its timing.

As a further improvement on the present invention, described drive circuit comprises control circuit, timing circuit, detect the testing circuit of scrap whether mulch-laying machine rack enclosure, the positive and negative rotation circuit of serial communication circuit and the drive motors rotating communicated is carried out with extraneous host computer, described serial communication circuit, testing circuit, timing circuit all couples with control circuit, described timing circuit and positive and negative rotation circuit couple, positive and negative rotation circuit and drive motors couple, described drive motors is direct current generator, and couple with positive and negative rotation circuit, described control circuit comprises 51 single-chip microcomputers, this single-chip microcomputer has I/O mouth, described testing circuit comprises TCS230 chip and is attached to the colored ribbon for TCS230 chip detection in holster shell, described TCS230 chip has power interface, ground interface, signal output interface and signal input interface, wherein signal output interface and signal input interface all couple with the I/O mouth of single-chip microcomputer, power interface connects power supply, ground interface ground connection, described serial communication circuit comprises communication jacks and MAX232 chip, described MAX232 chip has two signal input parts and two signal output parts, one of them signal input part and a signal output part couple with 51 single-chip microcomputers as one group, another signal input part and signal output part couple with communication jacks as another group, described timing circuit comprises 555 timing chips, the power pins of this chip couples external power source, grounding pin ground connection, its output pin couples positive and negative rotation circuit, two resistance, one of them resistance is coupled between the electric discharge pin of external power source and 555 timing chips, and another resistance is coupled between the electric discharge pin of 555 timing chips and voltage triggered pin, two electric capacity, one of them electric capacity is coupled between the voltage triggered pin of 555 timing chips and ground, another electric capacity is coupled between the control voltage pin of 555 timing chips and ground, 5th pin of described 555 timing chips and the I/O mouth of 51 single-chip microcomputers couple, described positive and negative rotation circuit comprises PMOS, the control end of this PMOS is coupled to the output pin of 555 timing chips, and first end is coupled to external positive power supply, and second rectifies to coupling ground connection after drive motors, NMOS tube, this NMOS tube control end is coupled to the output pin of 555 timing chips, first end ground connection, and the second end connects external positive power supply after oppositely coupling drive motors.

As a further improvement on the present invention, described slide block offers slide opening and screwed hole, and described fixed axis is arranged through slide opening, and described screw rod is threaded with screwed hole.

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

As a further improvement on the present invention, described holster shell is provided with safety door, described safety door comprise safety door body and the hand that is fixed on inside safety door body near base door connector assembly, and the locating piece to match with it and lock dog, described hand comprises door door connector assembly and inserts base, support, inserting handle and fixed axis, one end that described door inserts base is vertically fixed with support, the top of support is flexibly connected with inserting handle by hinge, the middle part that described door inserts base is provided with hole, on the axle body of described fixed axis, cover has spring, its lower end is inserted in the hole that door inserts on base, its upper end is provided with chock plug, and mill out the consent identical with chock plug diameter in the side that the handle of inserting handle is positioned at a connector assembly with it, the chock plug of fixed axis upper end coordinates with the consent piston on inserting handle, the lower end of described locating piece is welded on lathe bed, lock dog is provided with inside its upper end, and on inserting handle, mill out the lockhole coordinated with lock dog grafting, the lower end of described inserting handle downwards and safety door body extend in parallel, and stretch out the bottom of safety door body.

The present invention has following beneficial effect, by the setting of scraper plate and driven unit, just can effectively scraper plate be driven to move back and forth on the inwall of holster shell by driven unit, so just by scraper plate, the scrap be attached on holster shell inwall can be scraped off, make it to enter in the chip area of below, then seen off by conveyer belt, so just can effectively realize having cleared up the scrap on holster shell inwall, compared to the chip removal mechanism of prior art, there is clearing function more comprehensively, and just effectively can coordinate the work between various piece by the setting of control circuit, just effectively can detect that whether the scrap in holster shell is too much by the setting of testing circuit, if the too much so testing circuit of scrap will send detection signal to control circuit, control circuit will driving timing circuit, timing circuit will drive positive and negative rotation circuit, effectively realize the rotating of drive motors, simultaneously by the setting of serial communication circuit, people just can be changed by the setting of host computer to 51 single-chip microcomputers, so just effectively can realize the extension that testing circuit detects colored ribbon, and the too much degree of scrap, the regard that so whole auxiliary chip removal mechanism just can be made better can to meet people goes work, seem more intelligent.

Accompanying drawing explanation

Fig. 1 is the overall structure figure of numerically controlled lathe of the present invention;

Fig. 2 is the overall structure figure of driven unit in Fig. 1;

Fig. 3 is the circuit diagram of drive circuit.

Detailed description of the invention

With reference to shown in Fig. 1, a kind of numerically controlled lathe of the present embodiment, comprise holster shell 1 and the turning tool component be arranged in holster shell 1 and chip removal mechanism, described turning tool component comprises slide rail, be arranged on the fixture of one end of slide rail and be arranged on slide rail, can the lathe tool of slippage back and forth on slide rail, described chip removal mechanism comprises the scrap collection groove arranged near slide rail side, the bottom land of described scrap collection groove is conveyer belt, the output of described conveyer belt passes holster shell 1 and arranges, the below of output is provided with scrap collection box, the bottom of scrap collection box is provided with pulley, auxiliary chip removal mechanism 2 is also provided with in described holster shell 1, described auxiliary chip removal mechanism 2 comprises scraper plate 21 and drives scraper plate 21 1 driven unit moved back and forth 22 in holster shell, described scraper plate 21 is fitted with holster shell 1 inwall and is arranged, described driven unit 22 comprises the fixed axis 221 be arranged on along the extension of slide rail length direction in holster shell 1, be fixed on the drive motors 222 of fixed axis 221 one end and the slide block 223 of slippage on fixed axis 221, described slide block 223 fixes with scraper plate 21, the rotating shaft of described drive motors 222 is coaxially fixed with screw rod 2221, described screw rod 2221 is threaded with slide block 223, described drive motors 222 is also provided with the drive circuit 5 rotated and reverse driving its timing, process in constantly will produce scrap, part scrap drops on chip removal mechanism, directly discharged in holster shell 1 by chip removal mechanism, another part will descend slowly and lightly on the inwall of holster shell 1, above being attached to, at this moment chip removal mechanism just can not effectively be cleared up the scrap of this part, so driven unit 22 will drive scraper plate 21 to move back and forth in holster shell 1, because scraper plate 21 and holster shell 1 inwall are fitted, so in the process moved back and forth at scraper plate 21, the scrap be attached on holster shell 1 inwall will be scraped off, it is made to drop on chip removal mechanism, along with chip removal mechanism discharges in holster shell 1, like this by the setting of auxiliary chip removal mechanism 2, just effectively can match with chip removal mechanism and the scrap on holster shell 1 inwall emitted, wherein, as shown in Figure 2, when driven unit 22 operates, first fixed axis 221 is fixed in holster shell 1, as shown in Figure 1, this fixed axis 221 be arranged in parallel with the slide rail of holster shell 1 inside, drive motors 222 operates afterwards, rotate its turning cylinder, thus screw rod 2221 will to be driven and to rotate, at this moment because screw rod 2221 is threaded with slide block 223, slide block 223 is that slippage is connected on fixed axis 221 simultaneously, so in the process of screw rod 2221 rotation, due to the inhibition of fixed axis 221, screw rod 2221 can not be with movable slider 223 to rotate, thus slide block 223 will because of the rotation of screw rod 2221 slippage on fixed axis 221, thus drive scraper plate 21 slippage on fixed axis 221, just effectively can realize scraper plate 21 move back and forth on fixed axis 221 by rotating and reverse of drive motors 222, this makes it possible to the effective effect realizing driving scraper plate 21 to move back and forth in holster shell 1 inside, wherein turning tool component here and chip removal mechanism are prior art, therefore its course of work and principle do not repeat.

As a kind of detailed description of the invention improved, described drive circuit 5 comprises control circuit 53, timing circuit 51, detect the testing circuit 54 of scrap whether mulch-laying machine rack enclosure 1, the positive and negative rotation circuit 52 of the serial communication circuit 55 and drive motors rotating communicated is carried out with extraneous host computer, described serial communication circuit 55, testing circuit 54, timing circuit 51 all couples with control circuit 53, described timing circuit 51 couples with positive and negative rotation circuit 52, positive and negative rotation circuit 52 and drive motors 222 couple, described drive motors 222 is direct current generator, and couple with positive and negative rotation circuit 52, described control circuit 53 comprises 51 single-chip microcomputers 531, this single-chip microcomputer 531 has I/O mouth, described testing circuit 54 comprises TCS230 chip 541 and is attached in holster shell 1 for the colored ribbon that TCS230 chip 541 detects, described TCS230 chip has power interface, ground interface, signal output interface and signal input interface, wherein signal output interface and signal input interface all couple with the I/O mouth of single-chip microcomputer, power interface connects power supply, ground interface ground connection, described serial communication circuit 55 comprises communication jacks 551 and MAX232 chip 552, described MAX232 chip 552 has two signal input parts and two signal output parts, one of them signal input part and a signal output part couple with 51 single-chip microcomputers 531 as one group, another signal input part and signal output part couple with communication jacks 551 as another group, described timing circuit 51 comprises 555 timing chips 511, the power pins of this chip couples external power source, grounding pin ground connection, its output pin couples positive and negative rotation circuit 52, two resistance, one of them resistance is coupled between the electric discharge pin of external power source and 555 timing chips 511, between the electric discharge pin that another resistance is coupled to 555 timing chips 511 and voltage triggered pin, two electric capacity, between the voltage triggered pin that one of them electric capacity is coupled to 555 timing chips 511 and ground, between the control voltage pin that another electric capacity is coupled to 555 timing chips 511 and ground, 5th pin of described 555 timing chips 511 and the I/O mouth of 51 single-chip microcomputers 531 couple, described positive and negative rotation circuit 52 comprises PMOS, the control end of this PMOS is coupled to the output pin of 555 timing chips, and first end is coupled to external positive power supply, and second rectifies to coupling ground connection after drive motors 222, NMOS tube, this NMOS tube control end is coupled to the output pin of 555 timing chips, first end ground connection, second end connects external positive power supply after oppositely coupling drive motors 222, in the process of the numerically controlled lathe used, by turning tool component, workpiece car is gradually shaped, be shaped at its car, as shown in Figure 3, before the auxiliary chip removal mechanism 2 of use, first drive circuit 5 is electrified, then communication jacks 551 is passed through by the instruction of host computer, in MAX232 chip 552, after the process of MAX232 chip 552, instruction transformation will be become the signal that 51 single-chip microcomputers 531 can identify, then be transferred in 51 single-chip microcomputers 531, 51 single-chip microcomputers 531 upon receipt of this signal, will innerly arrange, then work is carried out, when scrap be attached in holster shell 1 by colored ribbon cover after, TCS230 chip 541 just cannot detect colored ribbon, at this moment TCS230 chip 541 will input a drive singal to 51 single-chip microcomputers 531, represent that now scrap needs are cleared up, 51 single-chip microcomputers 531 like this will send a drive singal in timing circuit 51, 555 timing chips 511 in timing circuit 51 upon receipt of this signal, will work, in the process of work, first external power source will be input in the power pins of 555 timing chips 511, power to 555 timing chips 511, 555 timing chips 511 are worked, the electric current of external power source flows through after the resistance of two series connection and electric capacity to ground, so electric current will by resistance to capacitor charging, wherein 2 in figure, 6 interfaces are respectively low pressure threshold interface and HVT high voltage threshold's interface, in the charging process of electric capacity, the voltage at its two ends will raise gradually, when electric capacity and 2, the voltage that 6 interfaces couple one end will raise gradually, output interface 3 exports high level, after the threshold voltage of its voltage more than 6 interfaces, output interface 3 output low level, open electric discharge interface 7 makes electric capacity be discharged by resistance simultaneously, the voltage on electric capacity is allowed slowly to decline, after the voltage drop on electric capacity to 2 interface threshold values, output interface 3 exports high level, the interface 7 that simultaneously discharges is closed, electric capacity will charge again, voltage above it will rise again, after it is increased over the threshold voltage of 6 interfaces, will repeat in process above, the output interface 3 that so just effectively can order about 555 timing chips 511 exports a square wave, the time cycle of this square wave is determined by the amount of capacity of electric capacity and the resistance of resistance simultaneously, this square wave will be input in positive and negative rotation circuit 52 afterwards, as shown in FIG., because PMOS is the conducting of control end input low level, so when 555 timing chip 511 output low level time, PMOS conducting, simultaneously due to the conducting of NMOS tube high level, so at this time NMOS tube not conducting, sense of current is exactly from the bottom up, drive motors 222 is driven to rotate, suppose that this time is for rotating forward, when 555 timing chips 511 export high level time, PMOS not conducting, and NMOS tube conducting, so as shown in FIG., sense of current will be from the bottom up, completely contrary when the sense of current and PMOS conducting before, so drive motors 222 at this moment turn to will with completely contrary when PMOS conducting, thus be reversion, like this in the process of drive motors 222 rotating, slide block 223 will move back and forth at fixed axis 221, thus drive scraper plate 21 to move back and forth in holster shell 1, so just can effectively the scrap on holster shell 1 inwall be scraped off, realize cleaning holster shell 1 inwall, avoid the problem that the sliding door caused due to scrap blocks.

As a kind of detailed description of the invention improved, described slide block 223 offers slide opening 3 and screwed hole 4, described fixed axis 221 is arranged through slide opening 3, described screw rod 2221 is threaded with screwed hole 4, slide block 223 is on fixed axis 221 when slippage, slide opening 3 will be enclosed within fixed axis 221, anti-limited slip block 223 departs from fixed axis 221, make slide block 223 cannot in the problem of fixed axis 221 slippage, just can effectively be matched with screw rod 2221 by screwed hole 4 simultaneously, when effectively realizing screw rod 2221 rotation, drive the effect that slide block 223 moves back and forth on fixed axis 221.

As a kind of detailed description of the invention improved, described colored ribbon is red colored ribbon, the detection chip adopted due to the present embodiment is TCS230 chip 541, TCS230 chip 541 is a kind of color detection chips, its color mainly detected has red, yellow, blue three kinds, so colored ribbon is arranged to redness here, just can will detect red command in 51 single-chip microcomputers 531 by MAX232 chip 552, 51 single-chip microcomputers 531 again by this command in TCS230 chip 541, at this moment TCS230 chip 541 will start to detect red colored ribbon, when scrap covers colored ribbon completely time, just represent that now scrap is too much, so TCS230 chip 541 just cannot detect colored ribbon, thus drive singal will be sent to 51 single-chip microcomputers 531, so auxiliary chip removal mechanism 2 just can be good at the scrap on descaling machine rack enclosure 1 inwall.

As a kind of detailed description of the invention of improvement, described holster shell 1 is provided with safety door (not shown), described safety door comprise safety door body and the hand that is fixed on inside safety door body near base door connector assembly, and the locating piece to match with it and lock dog, described hand comprises door door connector assembly and inserts base, support, inserting handle and fixed axis, one end that described door inserts base is vertically fixed with support, the top of support is flexibly connected with inserting handle by hinge, the middle part that described door inserts base is provided with hole, on the axle body of described fixed axis, cover has spring, its lower end is inserted in the hole that door inserts on base, its upper end is provided with chock plug, and mill out the consent identical with chock plug diameter in the side that the handle of inserting handle is positioned at a connector assembly with it, the chock plug of fixed axis upper end coordinates with the consent piston on inserting handle, the lower end of described locating piece is welded on lathe bed, lock dog is provided with inside its upper end, and on inserting handle, mill out the lockhole coordinated with lock dog grafting, the lower end of described inserting handle downwards and safety door body extend in parallel, and stretch out the bottom of safety door body, when shutting safety door, hand will be stuck with lock dog door connector assembly, thus effectively prevent in process because ground is out-of-level, add larger the caused safety door of lathe bed vibrations in man-hour automatically to slip off or people to fly out the generation of security incidents such as hurting sb.'s feelings for opening caused workpiece, the lower end of inserting handle is downward and safety door body extends in parallel simultaneously, and stretch out the bottom of safety door body, workman can be effectively facilitated to pull back inserting handle completing processing, lock dog is made to cross lockhole on inserting handle, thus reach the object of unblock.

In sum, by the setting of scraper plate 21, just can effectively clean the inwall of holster shell 1, and pass through the setting of driven unit 22, scraper plate 21 just can be effectively driven to move back and forth in holster shell 1, to realize the function of cleaner rack enclosure 1 inwall, compare existing chip removal mechanism, there is better cleaning effect.

The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. a numerically controlled lathe, comprise holster shell (1) and the turning tool component be arranged in holster shell (1) and chip removal mechanism, described turning tool component comprises slide rail, be arranged on the fixture of one end of slide rail and be arranged on slide rail, can the lathe tool of slippage back and forth on slide rail, described chip removal mechanism comprises the scrap collection groove arranged near slide rail side, the bottom land of described scrap collection groove is conveyer belt, the output of described conveyer belt passes holster shell (1) and arranges, the below of output is provided with scrap collection box, the bottom of scrap collection box is provided with pulley, it is characterized in that: in described holster shell (1), be also provided with auxiliary chip removal mechanism (2), described auxiliary chip removal mechanism (2) comprises scraper plate (21) and drives scraper plate (21) driven unit that (1) moves back and forth in holster shell (22), described scraper plate (21) and holster shell (1) inwall are fitted and are arranged, described driven unit (22) comprises the fixed axis (221) be arranged on along the extension of slide rail length direction in holster shell (1), be fixed on the drive motors (222) of fixed axis (221) one end and the slide block (223) in the upper slippage of fixed axis (221), described slide block (223) and scraper plate (21) fix, described drive motors (222) rotating shaft is coaxially fixed with screw rod (2221), described screw rod (2221) is threaded with slide block (223), described drive motors (222) is also provided with the drive circuit (5) rotated and reverse driving its timing.

2. numerically controlled lathe according to claim 1, it is characterized in that: described drive circuit (5) comprises control circuit (53), timing circuit (51), detect the testing circuit (54) of scrap whether mulch-laying machine rack enclosure (1), the positive and negative rotation circuit (52) of serial communication circuit (55) and the drive motors rotating communicated is carried out with extraneous host computer, described serial communication circuit (55), testing circuit (54), timing circuit (51) all couples with control circuit (53), described timing circuit (51) and positive and negative rotation circuit (52) couple, positive and negative rotation circuit (52) and drive motors (222) couple, described drive motors (222) is direct current generator, and couple with positive and negative rotation circuit (52), described control circuit (53) comprises 51 single-chip microcomputers (531), this single-chip microcomputer (531) has I/O mouth, described testing circuit (54) comprises TCS230 chip (541) and is attached to the upper colored ribbon detected for TCS230 chip (541) of holster shell (1), described TCS230 chip (541) has power interface, ground interface, signal output interface and signal input interface, wherein signal output interface and signal input interface all couple with the I/O mouth of single-chip microcomputer, power interface connects power supply, ground interface ground connection, described serial communication circuit (55) comprises communication jacks (551) and MAX232 chip (552), described MAX232 chip (552) has two signal input parts and two signal output parts, one of them signal input part and a signal output part couple with 51 single-chip microcomputers (531) as one group, another signal input part and signal output part couple with communication jacks (551) as another group, described timing circuit (51) comprises 555 timing chips (511), the power pins of this chip couples external power source, grounding pin ground connection, its output pin couples positive and negative rotation circuit (52), two resistance, one of them resistance is coupled between the electric discharge pin of external power source and 555 timing chips (511), between the electric discharge pin that another resistance is coupled to 555 timing chips (511) and voltage triggered pin, two electric capacity, between the voltage triggered pin that one of them electric capacity is coupled to 555 timing chips (511) and ground, between the control voltage pin that another electric capacity is coupled to 555 timing chips (511) and ground, 5th pin of described 555 timing chips (511) and the I/O mouth of 51 single-chip microcomputers (531) couple, described positive and negative rotation circuit (52) comprises PMOS, the control end of this PMOS is coupled to the output pin of 555 timing chips, first end is coupled to external positive power supply, and second rectifies to coupling drive motors (222) ground connection afterwards, NMOS tube, this NMOS tube control end is coupled to the output pin of 555 timing chips, first end ground connection, and the second end connects external positive power supply after oppositely coupling drive motors (222).

3. numerically controlled lathe according to claim 2, it is characterized in that: described slide block (223) offers slide opening (3) and screwed hole (4), described fixed axis (221) is arranged through slide opening (3), and described screw rod (2221) is threaded with screwed hole (4).

4. numerically controlled lathe according to claim 3, is characterized in that: described colored ribbon is red colored ribbon.

5. numerically controlled lathe according to claim 1, it is characterized in that: described holster shell (1) is provided with safety door, described safety door comprise safety door body and the hand that is fixed on inside safety door body near base door connector assembly, and the locating piece to match with it and lock dog, described hand comprises door door connector assembly and inserts base, support, inserting handle and fixed axis, one end that described door inserts base is vertically fixed with support, the top of support is flexibly connected with inserting handle by hinge, the middle part that described door inserts base is provided with hole, on the axle body of described fixed axis, cover has spring, its lower end is inserted in the hole that door inserts on base, its upper end is provided with chock plug, and mill out the consent identical with chock plug diameter in the side that the handle of inserting handle is positioned at a connector assembly with it, the chock plug of fixed axis upper end coordinates with the consent piston on inserting handle, the lower end of described locating piece is welded on lathe bed, lock dog is provided with inside its upper end, and on inserting handle, mill out the lockhole coordinated with lock dog grafting, the lower end of described inserting handle downwards and safety door body extend in parallel, and stretch out the bottom of safety door body.