CN103170869A - Automatic loading device and numerical control machine tool - Google Patents
Automatic loading device and numerical control machine tool Download PDFInfo
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- CN103170869A CN103170869A CN2013101142560A CN201310114256A CN103170869A CN 103170869 A CN103170869 A CN 103170869A CN 2013101142560 A CN2013101142560 A CN 2013101142560A CN 201310114256 A CN201310114256 A CN 201310114256A CN 103170869 A CN103170869 A CN 103170869A
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Abstract
The invention relates to the technical field of shaft parts, in particular to an automatic loading device of a numerical control machine tool, and particularly discloses the automatic loading device for carrying out finish machining on the shaft parts on the numerical control machine tool. A conveying mechanism of the automatic loading device is connected with a sequencing alignment mechanism, and conveys workpieces to the sequencing alignment mechanism one by one. A clutch rotating inversion mechanism is placed above the sequencing alignment mechanism and is used for tightly clutching the workipieces from the sequencing alignment mechanism and conveying the workpieces to a main shaft clamping plate. A movable mechanism provides motive power for the movement of the clutch rotating inversion mechanism. The conveying mechanism, the sequencing alignment mechanism, the clutch rotating inversion mechanism and the movable mechanism are connected with a control device. Full-automatic loading and discharging to the numerical control machine tool are achieved, consistency and precision of clamping are improved, machining precision of the machine tool is guaranteed, the occurrence of accidents is avoided, the service life of the machine tool is prolonged, a product rejection rate is greatly reduced, and working efficiency is improved.
Description
Technical field
The present invention relates to the Machining of Shaft-type Parts technical field, relate in particular to a kind of Digit Control Machine Tool automatic charging device, on Digit Control Machine Tool, axial workpiece is carried out accurately machined automatic charging device specifically.
Background technology
At present, continuous high speed development along with China's economy, automobile industry has become one of key industry of China's economic development, the composition of automobile needs thousands of parts, the processing of each parts (especially axial workpiece) needs a variety of equipment, need a large amount of personnel, and regenerate along with the continuous renewal of process equipment, personnel's technical ability also needs significantly to improve.Along with China's expanding economy, personnel demand improves constantly, along with recruitment in recent years is waste, each company is in order to reduce recruitment quantity, reduce costs, promote quality, to raise the efficiency, reduce workman's labour intensity and improve security, and enterprise used is all at the future development towards automation, few peopleization.and the appearance of the process equipments such as numerical control, greatly improved the quality of product, personnel's technical ability also needs further to improve, but the processing of numerical control device, it is all generally pure process equipment, and material loading part does not change artificial form, all generally that an operative employee operates an equipment or two equipment, do not realize Unmanned operation, numerical control has only realized pure processing, personnel's material loading does not reduce, and the material loadings of thousands of times of personnel every day, quality might not guarantee, and safety also allows of no optimist, operate miss due to the employee, often the personal safety accident can appear, automatic feed mechanism is restriction China minimizing operating personnel of factory, improve quality, the most important thing of minimizing accident.
Development along with automobile industry, the market demand of parts also in steady-state growth, each parts company also necessary lifting at aspects such as cost, safety, efficient, qualities, the ball pin series products is safety member, life spare, its quality direct relation personal safety, and it is controlling the direction of automotive wheel, and its processing is to complete with numerical control, material loading, blanking all need the operative employee to complete, and manual operations has following shortcoming:
The first, operative employee's hand need to stretch into numerical control device during feeding, discharge, and numerical control easily causes security incident when workpiece pressing;
During the second, due to digital control processing, need cutting oil cooling, cutting oil is low-priced arriving with it the operator easily, cause irritated and rot, and the action of thousands of times every day easily causes the puzzlement of occupational disease;
When three, staff is equipped with, clamping is not in place, and numerical control is along fixing program walking, easily causes numerical control to collide, and causes the numerical control precision to reduce, and reduces the numerical control life-span;
Four, the uniformity of staff material loading is not easy to guarantee, often causes product rejection, and inefficiency.
Therefore, for above deficiency, the invention provides a kind of Digit Control Machine Tool automatic charging device.
Summary of the invention
The technical problem that (one) will solve
The technical problem to be solved in the present invention is to need manual operations when solving existing lathe material loading, and clamping is not in place, easily causes the security incidents such as collision, makes machine tool accuracy reduce, and reduce service life; And the uniformity of staff material loading is difficult for guaranteeing, easily causes product rejection, the problem of inefficiency.
(2) technical scheme
in order to solve the problems of the technologies described above, the invention provides a kind of automatic charging device, described automatic charging device comprises conveying mechanism, the sequence alignment mechanism, promptly rotate inversion mechanism, travel mechanism and control device, described conveying mechanism connects the sequence alignment mechanism, and provide one by one workpiece to the sequence alignment mechanism, described promptly rotate inversion mechanism be positioned at the sequence alignment mechanism the top, and will firmly grasp and be delivered to spindle chuck from the workpiece of sequence alignment mechanism, described travel mechanism provides power for the movement of promptly rotating inversion mechanism, described conveying mechanism, the sequence alignment mechanism, promptly rotating inversion mechanism and travel mechanism all is connected with control device.
Wherein, described conveying mechanism involving vibrations dish, described vibrating disk is connected with the sequence alignment mechanism by track, and vibrating disk is connected with described control device.
Wherein, described track is provided with detecting unit and performance element, and described detecting unit detects in described vibrating disk whether workpiece is arranged, and described performance element guarantees that workpiece passes through one by one, and described detecting unit and performance element all are connected with described control device.
Wherein, described detecting unit comprises the first approach switch and the second approach switch, and described performance element is the sorting cylinder.
Wherein, described vibrating disk and track are obliquely installed and higher than described sequence alignment mechanism.
Wherein, described sequence alignment mechanism comprises sequence centering cylinder and sequence jack-up cylinder, and described sequence centering cylinder is single workpiece centering, make progress jack-up and supply with the described inversion mechanism that promptly rotates of the described sequence jack-up cylinder workpiece that centering is good.
Wherein, the described inversion mechanism that promptly rotates comprises a machinery folder and inloading part machinery folder, and described upper machinery folder is 90 ° with inloading part machinery folder and arranges and realize the rotation transposition by rotary cylinder.
Wherein, described travel mechanism comprises and moves up and down cylinder, moves forward and backward the unit and move left and right cylinder, described cylinder one end that moves up and down rotates promptly with described that inversion mechanism is connected, the other end is connected with the described cylinder that moves left and right, and moves left and right cylinder and also is connected with the described unit that moves forward and backward.
Wherein, described travel mechanism also comprises guide post, and guide post is connected with the described cylinder that moves up and down, the moving direction that moves up and down cylinder with the setting party of described guide post to identical.
The present invention also provides a kind of Digit Control Machine Tool, and it comprises above-mentioned automatic charging device.
(3) beneficial effect
Technique scheme of the present invention has following advantage: the present invention by conveying mechanism, sequence alignment mechanism, promptly rotate inversion mechanism and travel mechanism and be connected with control device, realized full automaticly carrying out material loading and discharging to Digit Control Machine Tool, operating personnel have been reduced, uniformity and the accuracy of clamping have been improved, guarantee machine finish, avoided the generation of accident, increased the service life of lathe, greatly reduce product rejection rate, improved operating efficiency.
Description of drawings
Fig. 1 is the structural representation of embodiment of the present invention Digit Control Machine Tool automatic charging device;
Fig. 2 is the structural representation of embodiment of the present invention sequence alignment mechanism;
Fig. 3 is the structural representation that the embodiment of the present invention is promptly rotated inversion mechanism.
In figure: 1: Digit Control Machine Tool; 2: support; 3: vibrating disk; 4: sequence jack-up cylinder; 5: sequence centering cylinder; 6: the sorting cylinder; 7: the first approach switchs; 8: the second approach switchs; 9: rotary cylinder; 101: upper part machinery folder; 102: inloading part machinery folder; 11: spindle chuck; 12: guide post; 13: cylinder opens the door; 14: alarm lamp; 15: move up and down cylinder; 16: move forward and backward the unit; 17: move left and right cylinder; 18: workpiece; 19: track; A: conveying mechanism; B: sequence alignment mechanism; C: promptly rotate inversion mechanism; D: travel mechanism.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope of protection of the invention.
as shown in Figure 1, the automatic charging device that the embodiment of the present invention provides, this automatic charging device comprises conveying mechanism A, sequence alignment mechanism B, promptly rotate inversion mechanism C, the D of travel mechanism and control device, described conveying mechanism A connects sequence alignment mechanism B, and B provides workpiece 18 one by one to the sequence alignment mechanism, describedly promptly rotate the top that inversion mechanism C is positioned at sequence alignment mechanism B, and will firmly grasp and be delivered to from the workpiece 18 of sequence alignment mechanism B the spindle chuck 11 of Digit Control Machine Tool 1, the described D of travel mechanism provides power for the movement of promptly rotating inversion mechanism C, described conveying mechanism A, sequence alignment mechanism B, promptly rotate inversion mechanism C and the D of travel mechanism all is connected with control device.
The present invention has realized full automaticly carrying out material loading and discharging to Digit Control Machine Tool, operating personnel have been reduced, reduced labour intensity, uniformity and the accuracy of clamping have been improved, guarantee machine finish, avoided the generation of accident, increased the service life of lathe, greatly reduce product rejection rate, improved operating efficiency.
Preferably, described conveying mechanism A involving vibrations dish 3, described vibrating disk 3 is connected with sequence alignment mechanism B by track 19, described track 19 is provided with detecting unit and performance element, described detecting unit detects in described vibrating disk 3 whether workpiece 18 is arranged, and described performance element guarantees that workpiece 18 passes through one by one.More preferably, described detecting unit comprises the first approach switch 7 and the second approach switch 8, and described performance element is sorting cylinder 6.Preferably, described vibrating disk 3 and track 19 adopts and is obliquely installed and higher than described sequence alignment mechanism B, utilizes like this deadweight of workpiece 18 can realize providing to sequence alignment mechanism B the function of workpiece 18.In the present embodiment, described vibrating disk 3 is positioned on support 2.
Described the first approach switch 7, the second approach switch 8, sorting cylinder 6 and vibrating disk 3 are connected with control device.
The 3 vibration dischargings of described vibrating disk, until the second approach switch 8 when sensing workpiece 18 vibrating disk 3 stop vibration, illustrate that workpiece is full; When the first approach switch 7 did not reach workpiece, illustrating that workpiece 18 has been finished need to restart vibrating disk 3 and again vibrate, until the second approach switch 8 sense workpiece full till.
As shown in Figure 2, preferably, described sequence alignment mechanism B comprises sequence centering cylinder 5 and sequence jack-up cylinder 4, and described sequence centering cylinder 5 is single workpiece 18 centerings, and described sequence jack-up cylinder 4 workpiece 18 that centering is good is jack-up and supply with the described inversion mechanism C that promptly rotates upwards.Described sequence centering cylinder 5 and sequence jack-up cylinder 4 all are connected with control device.
The sequence alignment mechanism B that utilizes sequence centering cylinder 5 and sequence jack-up cylinder 4 to form substitutes the action of staff, reaches the purpose of sequence, material loading.
As shown in Figure 3, preferably, the described inversion mechanism C that promptly rotates comprises a machinery folder 101 and inloading part machinery folder 102, and described upper machinery folder 101 is 90 ° with inloading part machinery folder 102 and arranges and realize the rotation transposition by rotary cylinder 9.Described rotary cylinder 9 is connected with control device.
Utilize that rotary cylinder 9, upper machinery folder 101 and inloading part machinery folder 102 form promptly rotate inversion mechanism C substitute staff take workpiece complete installation and the dismounting of workpiece, reduced the probability that security incident occurs, and avoided arm, hand etc. to touch cutting oil, and then avoided causing irritated and rot.
preferably, the described D of travel mechanism comprises and moves up and down cylinder 15, move forward and backward unit 16, move left and right cylinder 17 and guide post 12, described cylinder 15 1 ends that move up and down are connected with the described inversion mechanism C that promptly rotates, the other end is connected with the described cylinder 17 that moves left and right, moving left and right cylinder 17 also is connected with the described unit 16 that moves forward and backward, described guide post 12 is connected with the described cylinder 15 that moves up and down, the moving direction that moves up and down cylinder 15 with the setting party of described guide post 12 to identical, assurance moves up and down cylinder 15 and can only move up and down, the generation of phenomenons such as swinging can not appear.Described move up and down cylinder 15, move forward and backward unit 16 and move left and right cylinder 17 all be connected with control device.
The described unit 16 that moves forward and backward can be the single cylinder that moves forward and backward, and can be also the line slideway auxiliary that moves forward and backward of front and back line slideway and servomotor composition.
Utilization moves up and down cylinder 15, move forward and backward unit 16, move left and right the movement that the D of travel mechanism that cylinder 17 forms replaces the up, down, left, right, before and after of staff reality workpiece, realized full-automatic operation.
Described control device adopts the PLC programming Control, and entire exercise is connected with Digit Control Machine Tool, and everything does not need manually can realize manless production, reduces operating personnel, has improved efficient and product quality.
The present invention utilizes the action of the alternative staff such as various cylinders, machinery folder and vibrating disk, utilize PLC to control entire exercise and complete movement, transposition, rotation etc., and all cylinders all adopt the magnetic ring cylinder, per step action also can be provided with error prevention device, if per step action has issue machine automatically to stop, prevented the generation of problem, action consistency is more stable, improved product quality, and improved operating efficiency, every lathe can be saved at least one operating personnel, has reduced operating personnel's labour intensity and danger, prevents the generation of occupational disease.
The present invention also provides a kind of Digit Control Machine Tool, and this Digit Control Machine Tool comprises above-mentioned automatic charging device.This Digit Control Machine Tool also is provided with open the door cylinder 13 and alarm lamp 14, and the described cylinder 13 that opens the door is used for the door of Digit Control Machine Tool is opened, and described alarm lamp 14 is used for showing fault and the prompting operation person of this lathe.
This automatic charging device is connected with Digit Control Machine Tool itself, during use, presses start button, and vibrating disk 3 begins to vibrate discharging, until the second approach switch 8 when sensing workpiece 18 always vibrating disk 3 stop vibration, illustrate that workpiece 18 piled vibrating disk 3; In the course of the work, when the first approach switch 7 did not reach workpiece 18, illustrating that workpiece 18 has been finished need to restart vibrating disk 3 and again vibrate, until the second approach switch 8 sense workpiece full till.at this moment sorting cylinder 6 is emitted a workpiece (at every turn only emitting), the workpiece 18 of emitting is because deadweight slides into sequence alignment mechanism B, at this moment sort centering cylinder 5 with workpiece 18 centerings, sequence jack-up cylinder 4 sense the order action complete after with workpiece 18 jack-up, at this moment moving forward and backward unit 16 drives moves left and right cylinder 17 and promptly rotates the top that inversion mechanism C begins to move quickly into sequence jack-up cylinder 4, at this moment go up when part machinery folder 101 is sensed order in-position point and open, sense and move up and down cylinder 15 position that moves down to workpiece 18 after a machinery folder 101 opens, upper machinery presss from both sides 101 clamping work pieces 18, moving up and down cylinder 15 rises, move forward and backward unit 16 drive workpiece 18 and move to location point in lathe, at this moment moving left and right cylinder 17 begins mobile, workpiece 18 is moved to the spindle chuck 11 of Digit Control Machine Tool 1, and gripper chuck clamping of workpieces 18, moving left and right the cylinder 17 upper part machinery of drive folders 101 unclamps workpiece 18 and removes, moving forward and backward unit 16 drives and promptly rotates inversion mechanism C and shift out Digit Control Machine Tool 1, the cylinder 13 that opens the door is closed the door of Digit Control Machine Tool 1, Digit Control Machine Tool 1 beginning processing work 18, at this moment move forward and backward the top that unit 16 continues to move to sequence alignment mechanism B, grabbing workpiece also waits for that workpiece processes, (in upper order course of action used, sequence alignment mechanism B sequences workpiece simultaneously order and waits for) at this moment workpiece machine, the door of Digit Control Machine Tool 1 is opened, moving forward and backward unit 16 drives and promptly rotates inversion mechanism C and enter in Digit Control Machine Tool 1, utilize inloading part machinery folder 102 that workpiece is taken out, and rotary cylinder 9 is started working, with upper machinery folder 101 and the 102 rotation transpositions of inloading part machinery folder, upper machinery folder 101 workpiece from crawl outdoors are installed to clamping work pieces on spindle chuck 11, move forward and backward unit 16 and shift out Digit Control Machine Tool outdoors, the Digit Control Machine Tool door is closed, lathe begins processing, inloading part machinery folder 102 unclamps the workpiece that processes, workpiece drops to assigned address, at this moment rotary cylinder 9 is started working, with upper machinery folder 101 and the 102 rotation transpositions of inloading part machinery folder, move forward and backward the top that unit 16 continues to move to sequence alignment mechanism B, begin to repeat the order action.Single cyclic process, the time is controlled within 20 seconds usually, and efficient is very high.
In sum, the present invention by conveying mechanism, sequence alignment mechanism, promptly rotate inversion mechanism and travel mechanism and be connected with control device, realized full automaticly carrying out material loading and discharging to Digit Control Machine Tool, reduce operating personnel, improved uniformity and the accuracy of clamping, guaranteed machine finish, avoided the generation of accident, increase the service life of lathe, greatly reduced product rejection rate, improved operating efficiency.
The above is only a kind of preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. automatic charging device, it is characterized in that: comprise conveying mechanism (A), sequence alignment mechanism (B), promptly rotate inversion mechanism (C), travel mechanism (D) and control device, described conveying mechanism (A) connects sequence alignment mechanism (B), and provide one by one workpiece (18) to sequence alignment mechanism (B), described promptly rotate inversion mechanism (C) be positioned at the sequence alignment mechanism (B) the top, and will firmly grasp and be delivered to spindle chuck (11) from the workpiece (18) of sequence alignment mechanism (B), described travel mechanism (D) provides power for the movement of promptly rotating inversion mechanism (C), described conveying mechanism (A), sequence alignment mechanism (B), promptly rotate inversion mechanism (C) and travel mechanism (D) all is connected with control device.
2. automatic charging device according to claim 1, it is characterized in that: described conveying mechanism (A) involving vibrations dish (3), described vibrating disk (3) is connected with sequence alignment mechanism (B) by track (19), and vibrating disk (3) is connected with described control device.
3. automatic charging device according to claim 2, it is characterized in that: described track (19) is provided with detecting unit and performance element, described detecting unit detects in described vibrating disk (3) whether workpiece (18) is arranged, described performance element guarantees that workpiece (18) passes through one by one, and described detecting unit and performance element all are connected with described control device.
4. automatic charging device according to claim 3, it is characterized in that: described detecting unit comprises the first approach switch (7) and the second approach switch (8), described performance element is sorting cylinder (6).
5. according to claim 2-4 described automatic charging devices of any one is characterized in that: described vibrating disk (3) and track (19) are obliquely installed and higher than described sequence alignment mechanism (B).
6. automatic charging device according to claim 1, it is characterized in that: described sequence alignment mechanism (B) comprises sequence centering cylinder (5) and sequence jack-up cylinder (4), described sequence centering cylinder (5) is single workpiece (18) centering, and the workpiece that described sequence jack-up cylinder (4) is good with centering (18) is jack-up and supply with the described inversion mechanism (C) that promptly rotates upwards.
7. automatic charging device according to claim 1, it is characterized in that: the described inversion mechanism (C) that promptly rotates comprises a machinery folder (101) and inloading part machinery folder (102), and described upper machinery folder (101) is 90 ° with inloading part machinery folder (102) and arranges and realize the rotation transposition by rotary cylinder (9).
8. automatic charging device according to claim 1, it is characterized in that: described travel mechanism (D) comprises and moves up and down cylinder (15), moves forward and backward unit (16) and move left and right cylinder (17), described cylinder (15) one ends that move up and down rotate promptly with described that inversion mechanism (C) is connected, the other end is connected with the described cylinder (17) that moves left and right, and move left and right cylinder (17) and also are connected with the described unit (16) that moves forward and backward.
9. automatic charging device according to claim 8, it is characterized in that: described travel mechanism (D) also comprises guide post (12), guide post (12) is connected with the described cylinder (15) that moves up and down, the moving direction that moves up and down cylinder (15) with the setting party of described guide post (12) to identical.
10. a Digit Control Machine Tool, is characterized in that: comprise as the described automatic charging device of claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114256.0A CN103170869B (en) | 2013-03-29 | 2013-03-29 | Automatic charging device and Digit Control Machine Tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114256.0A CN103170869B (en) | 2013-03-29 | 2013-03-29 | Automatic charging device and Digit Control Machine Tool |
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| CN103170869A true CN103170869A (en) | 2013-06-26 |
| CN103170869B CN103170869B (en) | 2016-02-24 |
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| CN103419067A (en) * | 2013-08-21 | 2013-12-04 | 宁波恒力汽配轴承有限公司 | Automatic feeding device and machine tool thereof |
| CN104308727A (en) * | 2014-10-17 | 2015-01-28 | 芜湖洪金机床有限公司 | Automatic feeding mechanism for four-axis numerically-controlled tool grinding machine and feeding method thereof |
| CN104385124A (en) * | 2014-10-17 | 2015-03-04 | 芜湖洪金机床有限公司 | Five-axis numerical control tool grinding machine automatic feeding mechanism and feeding method thereof |
| CN104741671A (en) * | 2015-03-17 | 2015-07-01 | 温州职业技术学院 | Full-automatic power head slot milling machine tool |
| CN105127453A (en) * | 2015-09-01 | 2015-12-09 | 姜海 | Bar machine tool with automatic feeding function and machining method |
| CN106227142A (en) * | 2016-08-24 | 2016-12-14 | 苏州哈度软件有限公司 | A kind of threading apparatus control system |
| CN106271840A (en) * | 2016-08-31 | 2017-01-04 | 苏州市吴中区木渎晓云模具加工厂 | The inversion mechanism of valve upper cover processing line |
| CN106862987A (en) * | 2017-04-01 | 2017-06-20 | 华中科技大学无锡研究院 | A kind of processing unit (plant) of rolling element |
| CN107553474A (en) * | 2017-10-16 | 2018-01-09 | 郑莹 | Truss-like manipulator and its operation principle |
| CN113909982A (en) * | 2021-11-02 | 2022-01-11 | 新晃远大机械铸造有限公司 | Lathe for machining spare and accessory parts |
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| CN104308727A (en) * | 2014-10-17 | 2015-01-28 | 芜湖洪金机床有限公司 | Automatic feeding mechanism for four-axis numerically-controlled tool grinding machine and feeding method thereof |
| CN104385124A (en) * | 2014-10-17 | 2015-03-04 | 芜湖洪金机床有限公司 | Five-axis numerical control tool grinding machine automatic feeding mechanism and feeding method thereof |
| CN104741671A (en) * | 2015-03-17 | 2015-07-01 | 温州职业技术学院 | Full-automatic power head slot milling machine tool |
| CN105127453B (en) * | 2015-09-01 | 2017-12-01 | 重庆永林机械设备有限公司 | The bar machining machine tool and processing method of a kind of automatic charging |
| CN105127453A (en) * | 2015-09-01 | 2015-12-09 | 姜海 | Bar machine tool with automatic feeding function and machining method |
| CN106227142A (en) * | 2016-08-24 | 2016-12-14 | 苏州哈度软件有限公司 | A kind of threading apparatus control system |
| CN106271840A (en) * | 2016-08-31 | 2017-01-04 | 苏州市吴中区木渎晓云模具加工厂 | The inversion mechanism of valve upper cover processing line |
| CN106271840B (en) * | 2016-08-31 | 2018-08-17 | 淮安市井神钻采机具有限公司 | The inversion mechanism of valve upper cover processing line |
| CN106862987A (en) * | 2017-04-01 | 2017-06-20 | 华中科技大学无锡研究院 | A kind of processing unit (plant) of rolling element |
| CN107553474A (en) * | 2017-10-16 | 2018-01-09 | 郑莹 | Truss-like manipulator and its operation principle |
| CN113909982A (en) * | 2021-11-02 | 2022-01-11 | 新晃远大机械铸造有限公司 | Lathe for machining spare and accessory parts |
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| CN103170869B (en) | 2016-02-24 |
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