CN104440092A - One-time forming device and method for inner hole of oil nozzle - Google Patents
One-time forming device and method for inner hole of oil nozzle Download PDFInfo
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- CN104440092A CN104440092A CN201410621563.2A CN201410621563A CN104440092A CN 104440092 A CN104440092 A CN 104440092A CN 201410621563 A CN201410621563 A CN 201410621563A CN 104440092 A CN104440092 A CN 104440092A
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- motor
- cutlery
- collet
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q39/04—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps
- B23Q39/042—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps with circular arrangement of the sub-assemblies
- B23Q39/044—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being arranged to operate simultaneously at different stations, e.g. with an annular work-table moved in steps with circular arrangement of the sub-assemblies having at least one tool station cooperating with each work holder, e.g. multi-spindle lathes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/02—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of drums or rotating tables or discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/06—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of pushers
Abstract
The invention provides a one-time forming device and method for an inner hole of an oil nozzle and belongs to the field of machining. The one-time forming device for the inner hole of the oil nozzle comprises a feed mechanism and a forming mechanism. The feed mechanism comprises a clamping groove, a push rod and a proximity switch. The forming mechanism comprises a fixed disk, a rotary disk and a rotary shaft. Motors are evenly distributed on and connected to the fixed disk. The shaft end of each motor is connected with a cutting tool. Collet chucks with the same number as the motors are evenly distributed on and connected to the rotary disk. By the adoption of the one-time forming method, the inner hole of the oil nozzle can be machined and formed at a time through one device, so the problem that in common methods, a device with one position can not complete machining of the inner hole of the oil nozzle at a time is solved, and production space is saved; large human input is not needed, and operation can be conducted only by one operator, so the production cost is lowered; automatic machining is achieved, and the operator can also complete measurement and check of products in the machining process, so that the production efficiency is improved substantially; compared with traditional turning methods, the method can improve the production efficiency by 300%-400%.
Description
Technical field
The invention belongs to field of machining, particularly the device and method of hole forming in a kind of atomizer.
Background technology
Atomizer is the important composition parts of automobile engine, and when the solenoid is activated, produce suction, needle-valve is picked up, and opens spray orifice, and fuel oil sprays at a high speed through the annular gap between the axonometer and spray orifice of needle-valve head, is formed vaporific, is beneficial to oil inflame abundant.
The process of atomizer endoporus is owing to carrying out multiple tracks forming step, therefore in current atomizer in hole machined, the processing that next chassis bed carries out next procedure is proceeded to after often processing a procedure, cause secondary to clamp middle generation thus and clamp not positive phenomenon, and then make product occur the problems such as decentraction, hole size scattered error are large.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, the device of the atomizer endoporus disposal molding of guaranteeing both quality and quantity in a kind of automated production, production is provided.Another object of the present invention is to provide the method utilizing the device of described atomizer endoporus disposal molding to make atomizer endoporus disposal molding.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of device of atomizer endoporus disposal molding, it is characterized in that: comprise feed mechanism and shaping mechanism, feed mechanism comprises draw-in groove, push rod, proximity switch, shaping mechanism comprises fixed disk, rotating disk, rotating shaft, draw-in groove is fixedly connected on fixed disk side, push rod is positioned at draw-in groove exterior bottom, push rod is connected with spring, proximity switch is positioned at below draw-in groove, rotating disk is positioned on fixed disk, rotating shaft runs through fixed disk respectively, the center of rotating disk, uniformly on fixed disk be connected with motor, motor shaft end connects cutlery, uniformly on rotating disk be connected with the collet identical with motor quantity.
Further, described rotating shaft with between rotating disk for being fixedly connected with, for bolt is connected between motor with fixed disk, for being threaded between cutlery with motor, for bolt is connected between collet with rotating disk.
Further, the quantity of described motor is 6 ~ 12.
Further, described cutlery is the one in drill bit or milling cutter.
Utilize a method for the device processing atomizer endoporus of described atomizer endoporus disposal molding, it is characterized in that: comprise the following steps:
The first step: workpiece to be added is put into draw-in groove;
Second step: be installed on by cutlery on motor, arranges motor speed, feeding distance, feed speed;
3rd step: starting drive, proximity switch pushes away workpiece to be added before making push rod after experiencing signal, spring compresses deformation, and after workpiece to be added is pushed into and also clamps in collet, spring deformation recovers, and push rod playbacks;
4th step: rotating shaft drives dial rotation, the cutlery front that workpiece to be added turns to the connection of adjacent motor carried secretly by collet, collet is carried workpiece to be added secretly and is rotated, simultaneously, cutlery is opposite direction swivel feeding under motor drives, meanwhile, proximity switch makes push rod will push the clamping of next collet inside before workpiece to be added for the next one after again experiencing signal;
5th step: after treating that first cutlery completion of processing also screws out, the cutlery front that rotating shaft drives dial rotation to connect to next adjacent motor, repeat above swivel feeding processing action, meanwhile, next workpiece to be added repeats a procedure of processing;
6th step: after treating that the feeding process of whole cutlery is carried out, collet is entrained into shaped piece rotation and is back to draw-in groove front, and profiled member ejects by collet, pushes away workpiece to be added and enters in collet, repeat above procedure of processing before push rod.
Further, the installation situation of described cutlery is that bring out part mouth under draw-in groove, drill bit installed by front 5 ~ 9 motor, and milling cutter installed by all the other motor.
Further, the rotating speed of described collet is 200 ~ 300r/min, and the rotating speed of motor is 800 ~ 5400r/min, and feeding distance is 0.6 ~ 30mm, and feed speed is 0.05 ~ 1.2mm/s.
The invention has the beneficial effects as follows: can by disposable for atomizer endoporus machine-shaping by a device processing, atomizer endoporus disposablely cannot be processed the problem put in place by the equipment solving a station in conventional method, and saves production space; Without the need to larger human input, only need an operator to operate, production cost is reduced; Automation is processed, and in processing, operator can also complete the measurement inspection work to product, and production efficiency is significantly improved, and comparatively traditional vehicle processing method production efficiency can improve 300% ~ 400%.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is a kind of device overall structure front view of atomizer endoporus disposal molding.
Fig. 2 is a kind of device overall structure top view of atomizer endoporus disposal molding.
In figure: 1, feed mechanism, 2, shaping mechanism, 3, draw-in groove, 4, push rod, 5, proximity switch, 6, fixed disk, 7, rotating disk, 8, rotating shaft, 9, motor, 10, cutlery, 11, collet, 12, spring, 13, workpiece to be added.
Detailed description of the invention
Describe the present invention in detail below in conjunction with specific embodiment and accompanying drawing, but the present invention is not limited to specific embodiment.
Embodiment 1
The device of a kind of atomizer endoporus disposal molding as shown in the figures 1 and 2, comprise feed mechanism 1 and shaping mechanism 2, feed mechanism 1 comprises draw-in groove 3, push rod 4, proximity switch 5, and shaping mechanism 2 comprises fixed disk 6, rotating disk 7, rotating shaft 8.Draw-in groove 3 is fixedly connected on fixed disk 6 side, push rod 4 is positioned at draw-in groove 3 exterior bottom, push rod 4 is connected with spring 12, proximity switch 5 is positioned at below draw-in groove 3, on fixed disk 6, uniform bolt is connected with 6 motor 9, motor 9 axle head has been threaded cutlery 10, and the cutlery 10 that front 5 motor 9 counterclockwise from draw-in groove brings out part mouth 3 times connect is drill bit, the cutlery 10 that all the other 1 motor 9 connect is milling cutter, rotating disk 7 is positioned on fixed disk 6, on rotating disk 7, uniform bolt is connected with 6 collets 11, rotating shaft 8 runs through fixed disk 6 respectively, the center of rotating disk 7, for being fixedly connected with between rotating shaft 8 with rotating disk 7.
Embodiment 2
Adopt the device of a kind of atomizer endoporus disposal molding described in embodiment 1 to make the method for atomizer endoporus disposal molding, comprise the following steps:
The first step: workpiece 13 to be added is put into draw-in groove;
Second step: be installed on motor 9 by cutlery 10, arranges that motor 9 rotating speed is 5400r/min, feeding distance is 30mm, feed speed is 1.2mm/s;
3rd step: starting drive, proximity switch 5 pushes away workpiece 13 to be added before making push rod 4 after experiencing signal, spring 12 compressional deformation, and after workpiece 13 to be added is pushed into and also clamps in collet 11, spring 12 deformation recovers, and push rod 4 playbacks;
4th step: rotating shaft 8 drives rotating disk 7 to rotate counterclockwise, cutlery 10 front that workpiece 13 to be added turns to the connection of adjacent motor 9 carried secretly by collet 11, collet 11 is carried workpiece 13 to be added secretly and is rotated with the rotating speed of 300r/min, simultaneously, cutlery 10 is opposite direction swivel feeding under motor 9 drives, meanwhile, proximity switch 5 makes push rod 4 will push the clamping of next collet 11 inside before workpiece 13 to be added for the next one after again experiencing signal;
5th step: after treating that first cutlery 10 completion of processing also screws out, rotating shaft 8 drives rotating disk 7 to turn to cutlery 10 front of next adjacent motor 9 connection, and repeat above swivel feeding processing action, meanwhile, next workpiece 13 to be added repeats a procedure of processing;
6th step: after treating that the feeding process of whole cutlery 10 is carried out, collet 11 is entrained into shaped piece rotation and is back to draw-in groove 3 front, profiled member ejects by collet 11, pushes away workpiece 13 to be added and enters in collet 11, repeat above procedure of processing before push rod 4.
Embodiment 3
The device of a kind of atomizer endoporus disposal molding as shown in the figures 1 and 2, comprise feed mechanism 1 and shaping mechanism 2, feed mechanism 1 comprises draw-in groove 3, push rod 4, proximity switch 5, and shaping mechanism 2 comprises fixed disk 6, rotating disk 7, rotating shaft 8.Draw-in groove 3 is fixedly connected on fixed disk 6 side, push rod 4 is positioned at draw-in groove 3 exterior bottom, push rod 4 is connected with spring 12, proximity switch 5 is positioned at below draw-in groove 3, on fixed disk 6, uniform bolt is connected with 9 motor 9, motor 9 axle head has been threaded cutlery 10, and the cutlery 10 that front 7 motor 9 counterclockwise from draw-in groove brings out part mouth 3 times connect is drill bit, the cutlery 10 that all the other 2 motor 9 connect is milling cutter, rotating disk 7 is positioned on fixed disk 6, on rotating disk 7, uniform bolt is connected with 6 collets 11, rotating shaft 8 runs through fixed disk 6 respectively, the center of rotating disk 7, for being fixedly connected with between rotating shaft 8 with rotating disk 7.
Embodiment 4
Adopt the device of a kind of atomizer endoporus disposal molding described in embodiment 3 to make the method for atomizer endoporus disposal molding, comprise the following steps:
The first step: workpiece 13 to be added is put into draw-in groove;
Second step: be installed on motor 9 by cutlery 10, arranges that motor 9 rotating speed is 3000r/min, feeding distance is 15.3mm, feed speed is 0.62mm/s;
3rd step: starting drive, proximity switch 5 pushes away workpiece 13 to be added before making push rod 4 after experiencing signal, spring 12 compressional deformation, and after workpiece 13 to be added is pushed into and also clamps in collet 11, spring 12 deformation recovers, and push rod 4 playbacks;
4th step: rotating shaft 8 drives rotating disk 7 to rotate counterclockwise, cutlery 10 front that workpiece 13 to be added turns to the connection of adjacent motor 9 carried secretly by collet 11, collet 11 is carried workpiece 13 to be added secretly and is rotated with the rotating speed of 250r/min, simultaneously, cutlery 10 is opposite direction swivel feeding under motor 9 drives, meanwhile, proximity switch 5 makes push rod 4 will push the clamping of next collet 11 inside before workpiece 13 to be added for the next one after again experiencing signal;
5th step: after treating that first cutlery 10 completion of processing also screws out, rotating shaft 8 drives rotating disk 7 to turn to cutlery 10 front of next adjacent motor 9 connection, and repeat above swivel feeding processing action, meanwhile, next workpiece 13 to be added repeats a procedure of processing;
6th step: after treating that the feeding process of whole cutlery 10 is carried out, collet 11 is entrained into shaped piece rotation and is back to draw-in groove 3 front, profiled member ejects by collet 11, pushes away workpiece 13 to be added and enters in collet 11, repeat above procedure of processing before push rod 4.
Embodiment 5
The device of a kind of atomizer endoporus disposal molding as shown in the figures 1 and 2, comprise feed mechanism 1 and shaping mechanism 2, feed mechanism 1 comprises draw-in groove 3, push rod 4, proximity switch 5, and shaping mechanism 2 comprises fixed disk 6, rotating disk 7, rotating shaft 8.Draw-in groove 3 is fixedly connected on fixed disk 6 side, push rod 4 is positioned at draw-in groove 3 exterior bottom, push rod 4 is connected with spring 12, proximity switch 5 is positioned at below draw-in groove 3, on fixed disk 6, uniform bolt is connected with 12 motor 9, motor 9 axle head has been threaded cutlery 10, and the cutlery 10 that clockwise front 9 motor 9 connect from draw-in groove brings out part mouth 3 times is drill bit, the cutlery 10 that all the other 3 motor 9 connect is milling cutter, rotating disk 7 is positioned on fixed disk 6, on rotating disk 7, uniform bolt is connected with 6 collets 11, rotating shaft 8 runs through fixed disk 6 respectively, the center of rotating disk 7, for being fixedly connected with between rotating shaft 8 with rotating disk 7.
Embodiment 6
Adopt the device of a kind of atomizer endoporus disposal molding described in embodiment 5 to make the method for atomizer endoporus disposal molding, comprise the following steps:
The first step: workpiece 13 to be added is put into draw-in groove;
Second step: be installed on motor 9 by cutlery 10, arranges that motor 9 rotating speed is 800r/min, feeding distance is 0.6mm, feed speed is 0.05mm/s;
3rd step: starting drive, proximity switch 5 pushes away workpiece 13 to be added before making push rod 4 after experiencing signal, spring 12 compressional deformation, and after workpiece 13 to be added is pushed into and also clamps in collet 11, spring 12 deformation recovers, and push rod 4 playbacks;
4th step: rotating shaft 8 drives rotating disk 7 to rotate clockwise, cutlery 10 front that workpiece 13 to be added turns to the connection of adjacent motor 9 carried secretly by collet 11, collet 11 is carried workpiece 13 to be added secretly and is rotated with the rotating speed of 200r/min, simultaneously, cutlery 10 is opposite direction swivel feeding under motor 9 drives, meanwhile, proximity switch 5 makes push rod 4 will push the clamping of next collet 11 inside before workpiece 13 to be added for the next one after again experiencing signal;
5th step: after treating that first cutlery 10 completion of processing also screws out, rotating shaft 8 drives rotating disk 7 to turn to cutlery 10 front of next adjacent motor 9 connection, and repeat above swivel feeding processing action, meanwhile, next workpiece 13 to be added repeats a procedure of processing;
6th step: after treating that the feeding process of whole cutlery 10 is carried out, collet 11 is entrained into shaped piece rotation and is back to draw-in groove 3 front, profiled member ejects by collet 11, pushes away workpiece 13 to be added and enters in collet 11, repeat above procedure of processing before push rod 4.
Claims (7)
1. the device of an atomizer endoporus disposal molding, it is characterized in that: comprise feed mechanism (1) and shaping mechanism (2), feed mechanism (1) comprises draw-in groove (3), push rod (4), proximity switch (5), shaping mechanism (2) comprises fixed disk (6), rotating disk (7), rotating shaft (8), draw-in groove (3) is fixedly connected on fixed disk (6) side, push rod (4) is positioned at draw-in groove (3) exterior bottom, push rod (4) is connected with spring (12), proximity switch (5) is positioned at draw-in groove (3) below, rotating disk (7) is positioned on fixed disk (6), rotating shaft (8) runs through fixed disk (6) respectively, the center of rotating disk (7), fixed disk (6) is above uniform is connected with motor (9), motor (9) axle head connects cutlery (10), rotating disk (7) is above uniform is connected with the collet (11) identical with motor (9) quantity.
2. the device of a kind of atomizer endoporus disposal molding according to claim 1, it is characterized in that: for being fixedly connected with between described rotating shaft (8) with rotating disk (7), for bolt is connected between motor (9) with fixed disk (6), for being threaded between cutlery (10) with motor (9), for bolt is connected between collet (11) with rotating disk (7).
3., according to the device of the arbitrary described a kind of atomizer endoporus disposal molding of claim 1 or 2, it is characterized in that: the quantity of described motor (9) is 6 ~ 12.
4., according to the device of the arbitrary described a kind of atomizer endoporus disposal molding of claim 1 or 2, it is characterized in that: described cutlery (10) is the one in drill bit or milling cutter.
5. utilize a method for the device processing atomizer endoporus of atomizer endoporus disposal molding according to claim 1, it is characterized in that: comprise the following steps:
The first step: workpiece to be added (13) is put into draw-in groove (3);
Second step: be installed on motor (9) by cutlery (10), arranges motor (9) rotating speed, feeding distance, feed speed;
3rd step: starting drive, make after proximity switch (5) experiences signal that push rod (4) is front pushes away workpiece to be added (13), spring (12) compressional deformation, after workpiece to be added (13) is pushed into and also clamps in collet (11), spring (12) deformation recovers, and push rod (4) playbacks;
4th step: rotating shaft (8) drives rotating disk (7) to rotate, collet (11) is carried workpiece to be added (13) secretly and is turned to cutlery (10) front that adjacent motor (9) connects, collet (11) is carried workpiece to be added (13) secretly and is rotated, simultaneously, cutlery (10) is opposite direction swivel feeding under motor (9) drives, meanwhile, push rod (4) is made to push the clamping of next collet (11) inside by front for workpiece (13) to be added for the next one after proximity switch (5) experiences signal again;
5th step: after treating that first cutlery (10) completion of processing also screws out, rotating shaft (8) drive rotating disk (7) turns to cutlery (10) front that next adjacent motor (9) connects, repeat above swivel feeding processing action, meanwhile, next workpiece to be added (13) repeats a procedure of processing;
6th step: after treating that the feeding process of whole cutlery (10) is carried out, collet (11) is entrained into shaped piece rotation and is back to draw-in groove (3) front, profiled member ejects by collet (11), the front workpiece to be added (13) that pushes away of push rod (4) enters in collet (11), repeats above procedure of processing.
6. the method for a kind of atomizer endoporus disposal molding according to claim 5, it is characterized in that: the installation situation of described cutlery (10) is that front 5 ~ 9 motor (9) install drill bit from bringing out part mouth under draw-in groove (3), and (9) install milling cutter with all the other motor.
7. according to the method for the arbitrary described a kind of atomizer endoporus disposal molding of claim 5 or 6, it is characterized in that: the rotating speed of described collet (11) is 200 ~ 300r/min, the rotating speed of motor (9) is 800 ~ 5400r/min, feeding distance is 0.6 ~ 30mm, and feed speed is 0.05 ~ 1.2mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621563.2A CN104440092B (en) | 2014-11-06 | 2014-11-06 | A kind of device and method of atomizer endoporus disposal molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621563.2A CN104440092B (en) | 2014-11-06 | 2014-11-06 | A kind of device and method of atomizer endoporus disposal molding |
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| Publication Number | Publication Date |
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| CN104440092A true CN104440092A (en) | 2015-03-25 |
| CN104440092B CN104440092B (en) | 2016-08-24 |
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| CN201410621563.2A Active CN104440092B (en) | 2014-11-06 | 2014-11-06 | A kind of device and method of atomizer endoporus disposal molding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009104A (en) * | 2017-05-19 | 2017-08-04 | 海瑞恩精密技术（太仓）有限公司 | A kind of petrol engine atomizer female connector processing method |
| CN113427271A (en) * | 2021-07-23 | 2021-09-24 | 安华精密科技(苏州)有限公司 | Numerical control machining method for precision part of outer cylinder of undercarriage shock absorber |
-
2014
- 2014-11-06 CN CN201410621563.2A patent/CN104440092B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009104A (en) * | 2017-05-19 | 2017-08-04 | 海瑞恩精密技术（太仓）有限公司 | A kind of petrol engine atomizer female connector processing method |
| CN107009104B (en) * | 2017-05-19 | 2019-01-25 | 海瑞恩精密技术（太仓）有限公司 | A kind of petrol engine atomizer female connector processing method |
| CN113427271A (en) * | 2021-07-23 | 2021-09-24 | 安华精密科技(苏州)有限公司 | Numerical control machining method for precision part of outer cylinder of undercarriage shock absorber |
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| Publication number | Publication date |
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| CN104440092B (en) | 2016-08-24 |
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