CN102259193A - Method for processing bearing roller by double-spindle full-automatic numerical-control lathe - Google Patents

Method for processing bearing roller by double-spindle full-automatic numerical-control lathe Download PDF

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Publication number
CN102259193A
CN102259193A CN201110041750XA CN201110041750A CN102259193A CN 102259193 A CN102259193 A CN 102259193A CN 201110041750X A CN201110041750X A CN 201110041750XA CN 201110041750 A CN201110041750 A CN 201110041750A CN 102259193 A CN102259193 A CN 102259193A
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China
Prior art keywords
main shaft
bearing roller
raw
finished
bar
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Pending
Application number
CN201110041750XA
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Chinese (zh)
Inventor
王渤
马国斌
张立柱
李金禄
姜文亭
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TIANJIN NORTH ZHAKOU INSTRUMENT MACHINE TOOL PLANT
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TIANJIN NORTH ZHAKOU INSTRUMENT MACHINE TOOL PLANT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201110041750XA priority Critical patent/CN102259193A/en
Publication of CN102259193A publication Critical patent/CN102259193A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for processing a bearing roller by a double-spindle full-automatic numerical-control lathe, comprising the following steps: (1) sending a rod-like raw material to the chuck of a first spindle along the axial through hole of the first spindle, and fixing; (2) processing the end surface of the rod-like raw material and an excircle by a lathe tool to obtain the semi-finished product of the bearing roller, and meanwhile, moving a cutter along an Y-axis direction to cut the rod-like raw material until the semi-finished product of the bearing roller and the rest rod-like raw material are connected only by a residual section; (3) driving a second spindle to approach to the first spindle along a Z-axis direction, and fixing the semi-finished product of the bearing roller by the jaw of the second spindle; (4) twisting off the residual section; and (5) resetting the second spindle, and processing the semi-finished product of the bearing roller to the end surface of the first spindle to obtain the bearing roller. With the method, the product percent of pass is improved, the cutter can quickly reach the proper position when a workpiece is cut, the processing time is shortened, and the production efficiency is improved.

Description

Utilize the method for two main shaft full-automatic numerical control machined into bearing rollers
Technical field
The present invention relates to a kind of method of utilizing the lathe in machining metal parts, relate in particular to a kind of method of full-automatic machining bearing roller.
Background technology
Numerically controlled lathe is the main product of machine industry, be to realize the modern key equipment of equipment manufacturing the present age, the quantity of China's high-performance numerically controlled lathe and kind a few days ago, still can not satisfy the demand of domestic market, high-tech industry particularly, bearing as China is made the special manufacturer, the efficient numerically controlled lathe of axletree bearing roller still is badly in need of very much, because the machining accuracy height of numerically controlled lathe is advanced in performance, the efficient height adds the auxiliary equipment feeder, material receiver can be realized fully-automatic production, one people manages many lathes, can carry out multitool control easily, saves a large amount of labours.
Numerically controlled lathe generally comprises the lathe bed that is positioned on the base in the prior art, also be provided with the main shaft block on the base, the main spindle box of band main shaft is installed on the main shaft block, an end of main shaft has chuck and is used for fixing workpiece, the main-shaft axis direction is defined as the Z axle, in order to cut or processing work also is provided with cutting knife.The support that has inclined guide rails is installed on the lathe bed, cutting knife can move along inclined guide rails by pedestal, because cutting knife actual motion track is an oblique line, displacement on Y-axis is actual motion distance * sin α, α is the inclination angle of inclined guide rails, the Y-axis displacement in order to obtain to be scheduled to like this, and the actual motion rail of cutting knife is longer relatively, consuming time many, production efficiency is not high.
Need six operations when having the same workpiece of lathe in machining (is example with the bearing roller) now.
1) blanking: cutting length be two bearing rollers and between the length of surplus, be defined as the clutch shaft bearing roller and second bearing roller temporarily for ease of describing these two bearing rollers;
2) clamping second bearing roller utilizes cutter to process the end face and the cylindrical of clutch shaft bearing roller;
3) with the raw material commutation, clamping clutch shaft bearing roller utilizes cutter to process the end face and the cylindrical of second bearing roller;
4) cut, the clutch shaft bearing roller is separated with second bearing roller;
5) originally link to each other with second bearing roller end face of an end of an end of clamping clutch shaft bearing roller, processing is finished the processing of clutch shaft bearing roller;
6) originally link to each other with the clutch shaft bearing roller end face of an end of an end of clamping second bearing roller, processing is finished the processing of second bearing roller.
More than six processing apparatus and labour's occupancy height, strengthened production cost.
In addition, when workpiece raw material length is longer, need promote raw material to second major axes orientation from first main shaft, the length of feeding is generally controlled by the stroke of feeding hydraulic cylinder in the prior art, when raw material slightly tilts or be crooked, although the stroke of feeding hydraulic cylinder has reached predetermined value, but with respect to second main shaft, raw material is accurately not in place, processes if start two main shafts this moment, will inevitably produce defective work.
Summary of the invention
The invention provides a kind of method of utilizing two main shaft full-automatic numerical control machined into bearing rollers, utilize telescopic second main shaft to match, high efficiency workpiece is processed and cut, and realized automatic induction Workpiece length with first main shaft.
A kind of method of utilizing two main shaft full-automatic numerical control machined into bearing rollers comprises the steps:
(1) in the numerically controlled lathe of first main shaft and the second main shaft coaxial arrangement, bar-like raw material is delivered to the chuck place of first main shaft along the axially extending bore of first main shaft, the claw that utilizes chuck is bar-like raw material fixedly;
(2) utilize lathe tool successively bar-like raw material to be processed towards the end face and the cylindrical of second main shaft, obtain the bearing roller semi-finished product, in processing excircles along the Y direction cutting knife that moves, bar-like raw material is cut, between the bar-like raw material of bearing roller semi-finished product and remainder, only link to each other by residual section;
During the processing end face, generally also comprise the processing of this end face groove and the processing of chamfered edge to foreign round.
(3) under the condition that keeps first main shaft and second main shaft to rotate synchronously, drive second main shaft along close first main shaft of Z-direction, arrive the predetermined position that connects material until second main shaft, unclamp the claw of first main shaft, push bar-like raw material to second main shaft, trigger induction installation in second main shaft until the half-finished end face of bearing roller, the claw of first main shaft and second main shaft is fixedly bar-like raw material and bearing roller semi-finished product respectively;
(4) rotation direction or the rotating speed of adjusting second main shaft make first main shaft and second main shaft that residual section is twisted off;
(5) drive second main shaft and reset until second main shaft away from first main shaft, utilize lathe tool that the bearing roller semi-finished product are processed towards the end face of first main shaft again, obtain bearing roller along Z-direction.
Bar-like raw material for fear of the bearing roller semi-finished product from remainder comes off, and guarantees that again first main shaft and second main shaft are easy to residual section is twisted off; Described residual section diameter is 2~8mm.
At last, can also utilize manipulator that the bearing roller that obtains is shifted out numerically controlled lathe.
When in step (3), pushing bar-like raw material to second main shaft, the distance that promotes is not less than the axial length (length that comprises residual section and processing loss) of bearing roller, can guarantee so residual section twist off after, the bar-like raw material that is in the first main shaft Working position enough is used to process next bearing roller.
In order to realize the inventive method, can utilize following pair of main shaft full-automatic numerical control lathe, comprise base, be positioned at first main shaft assembly and lathe bed on the base, be positioned at second main shaft assembly on the lathe bed, described first main shaft assembly comprises first main spindle box of built-in first main shaft, first main spindle box is installed on the base by the first main shaft block, described second main shaft assembly comprises second main spindle box of built-in second main shaft, second main spindle box is installed on the lathe bed, first main shaft and the second main shaft coaxial arrangement, the described first main spindle box outer wall is equipped with cutting blade assembly, cutting blade assembly comprises first guide rail of arranging along Y direction, the Cutter apron that is slidingly matched with this first guide rail, the driving mechanism of Cutter apron and be fixed on cutting knife on the Cutter apron, the described second main shaft periphery is provided with the sleeve that is slidingly matched along Z-direction, this sleeve is installed in second main spindle box by bearing, be provided with hydraulic cylinder in second main shaft assembly, relative second main spindle box of the cylinder body of hydraulic cylinder is fixed, piston rod in the cylinder body is connected with second main shaft, is used to drive second main shaft and moves along Z-direction.
As numerically controlled lathe, be provided with necessary digital control system, each electrical components and necessary sensor, instrument all insert and are controlled by digital control system.
In the described cutting blade assembly, be provided with second guide rail of arranging along Z-direction that is fixed on the first main spindle box top, and the transmission case that is slidingly matched with second guide rail, described first guide rail is fixed on the transmission case sidewall.Cutting knife is positioned at directly over the processing component, and when cutting knife moved along Y-axis, actual motion distance was the Y-axis displacement promptly, so cutting knife can be in place rapidly during cut workpiece, shortens process time, improved production efficiency.
Transmission case is connected to driving mechanism, is used to drive transmission case and slides along second guide rail.
The driving mechanism of described Cutter apron comprises leading screw and the drive motors thereof that is positioned at transmission case, and this threads of lead screw is combined with spigot nut, and described Cutter apron is fixedlyed connected with spigot nut.Generally adopt servomotor in order to improve the described drive motors of machining accuracy, pass through band transmission synchronously between the output shaft of drive motors and the leading screw.
Be provided with the keyway arrangements of arranging between the outer wall of described second main shaft and the inwall of sleeve along Z-direction.Only can be between second main shaft and the sleeve along axially the moving mutually of Z axle, and can't rotate mutually, when sleeve rotates, just can drive second main shaft and rotate like this.
Hydraulic cylinder in second main shaft assembly is fixed on the second main spindle box side, and other second main shaft is with the tail cylinder that is rotatably assorted by bearing away from an end of first main shaft, and the piston rod in this hydraulic cylinder is fixedly connected on the tail cylinder.Because the tail cylinder,, can promote second main shaft by the tail cylinder and slide during piston rod movement in the second main shaft outside by bearing holder (housing, cover), and do not influence the rotation of second main shaft in sleeve.
Be provided be used to drive second main shaft with and the motor of outer sleeve.Described sleeve outer wall is fixedly connected with belt pulley, and described motor also can adopt other interlock modes for the rotation that drives second main shaft and sleeve certainly by belt and belt pulley interlock.
When second main shaft moves along the Z axle, can change and first main shaft between distance, in conjunction with the opening and closing of the claw of first main shaft and second spindle nose, realize workpiece is transferred to second main shaft by first main shaft.
Described first main shaft and second main shaft all have axial through hole, be provided with and the corresponding feed mechanism of the lead to the hole site of first main shaft in the side of first main shaft away from second main shaft, long bar-like raw material can stretch into the through hole of first main shaft by the promotion of feed mechanism, feed mechanism can adopt common hydraulic pushing device, realizes that bar-like raw material moves along the Z axle.
Flexible push rod and inductive switch are installed in the through hole of described second main shaft successively, flexible push rod at least a portion is extended the opening of this through hole towards first main shaft, one side, the holding wire of inductive switch extends second main shaft along this through hole from the opening away from first main shaft, one side, insert the digital control system of numerically controlled lathe again, when workpiece was in place with respect to second main shaft, extruding flexible push rod in the termination of workpiece triggered inductive switch.
The inwall of the through hole of described second main shaft is provided with limited step, is provided with back-moving spring between flexible push rod and limited step, and flexible push rod is applied thrust towards first major axes orientation.
During feeding, raw material is gradually near the second main shaft end face (promptly locating end face), and begin to push flexible push rod, make in the through hole of flexible push rod compression reseting spring retraction second main shaft, when the raw material termination contacts the second main shaft end face, promptly flexible push rod also is in extreme position and triggers inductive switch, after the digital control system of numerically controlled lathe is received signal in place, begins raw material in place is processed.
The inventive method second main shaft can stretch, be used near the first main shaft gripping workpiece, by rotating speed or the rotation direction that changes second main shaft, can be when needed and first main shaft make a concerted effort to twist off coupling part residual between workpiece, then utilize the opposite side of workpiece processing tool, automaticity is higher.Have location of workpiece induction installation in other second main shaft, with respect to second main shaft, raw material has only accurately in place, just can open main shaft and cutter is processed, and has improved product percent of pass.
Just can cut in the processing work cylindrical, the lathe tool of processing excircles was overlapped with the time kept in reserve of cutting knife, cutting knife can be in place rapidly during cut workpiece, shortens process time, improved production efficiency, avoided the generation of fault.
Description of drawings
Fig. 1 is the structural representation of a kind of pair of main shaft full-automatic numerical control lathe of the present invention's use;
Fig. 2 is the structural representation of cutting blade assembly;
Fig. 3 is the structural representation of second main shaft assembly;
Fig. 4 is the structural representation at claw position in second main shaft assembly, and workpiece wherein to be processed does not contact with flexible push rod as yet;
Fig. 5 is the schematic diagram that workpiece to be processed among Fig. 4 has just contacted with flexible push rod;
Fig. 6 is the flexible schematic diagram of push rod when extreme position of workpiece extruding to be processed among Fig. 4;
Fig. 7 is the structural representation at inductive switch position in second main shaft assembly;
Fig. 8 is the schematic diagram of bearing roller and each working position;
Fig. 9 is a kind of structural representation of bearing roller;
Figure 10 is the structural representation of another kind of bearing roller;
Figure 11 is the structural representation of the third bearing roller.
The specific embodiment
Referring to Fig. 1, two main shaft full-automatic numerical control lathes that the present invention adopts comprise base 1, are positioned at first main shaft assembly 3 and lathe bed 2 on the base 1, and second main shaft assembly 6 is housed on the lathe bed 2.
First main shaft assembly 3 comprises first main spindle box of built-in first main shaft, and first spindle nose has the claw that is used for holding workpiece 7.First main spindle box is installed on the base 1 by the first main shaft block, and second main shaft assembly 6 comprises second main spindle box of built-in second main shaft, and second main spindle box is installed on the lathe bed 2, first main shaft and the second main shaft coaxial arrangement.
Also be provided with cutting tool assembly 5 on the lathe bed 2.
The first main spindle box outer wall is equipped with cutting blade assembly 4, the Cutter apron 47 that referring to Fig. 2, cutting blade assembly comprises first guide rail 48 arranged along Y direction, be slidingly matched with this first guide rail 48, the driving mechanism of Cutter apron 47 and be fixed on cutting knife 49 on the Cutter apron 47.
Also be provided with second guide rail of arranging along Z-direction 41 that is fixed on first main spindle box, 31 tops in the cutting blade assembly, and be fixed on transmission case 42 sidewalls with transmission case 42, the first guide rails 48 that second guide rail 41 is slidingly matched.The driving mechanism of Cutter apron 47 comprises leading screw 45 and the drive motors 43 thereof that is positioned at transmission case 42, and these leading screw 45 threaded engagement have spigot nut 46, and Cutter apron 47 is fixedlyed connected with spigot nut 46.Adopt servomotors in order to improve machining accuracy drive motors 43, between its output shaft and the leading screw 45 by being with 44 transmissions synchronously.
Cutting knife 49 is positioned at directly over the processing component, and when cutting knife moved along Y-axis, actual motion distance was the Y-axis displacement component promptly, so cutting knife 49 can be in place rapidly during cut workpiece, shortens process time, improved production efficiency.
In addition as numerically controlled lathe, be provided with necessary digital control system, each electrical components and necessary sensor, instrument all insert and are controlled by digital control system.
Referring to Fig. 3, second main shaft, 63 peripheries are provided with the sleeve 62 that is slidingly matched along Z-direction, and sleeve 62 is installed in second main spindle box 61 by bearing, is provided with hydraulic cylinder 65, and the cylinder body of hydraulic cylinder 65 is fixed on the sidewall of second main spindle box 61.
Second main shaft, 63 ends are with the tail cylinder 64 that is rotatably assorted by bearing, and the piston rod 66 in the cylinder body is fixedly connected on the tail cylinder 64, are used to drive second main shaft 63 and move along Z-direction.Because tail cylinder 64,, promotes second main shaft 63 by tail cylinder 64 and slides during piston rod 66 motions in second main shaft, 63 outsides by bearing holder (housing, cover), and do not influence the rotation of second main shaft 63 in sleeve 62.
Be provided with the keyway arrangements (not shown) of arranging between the inwall of the outer wall of second main shaft 63 and sleeve 62 along Z-direction, only making between second main shaft 63 and the sleeve 62 can axially moving along the Z axle mutually, and can't rotate mutually, when sleeve 62 rotates, just can drive second main shaft 63 and rotate like this.
Be provided be used to drive second main shaft 63 with and the motor (not shown) of outer sleeve 62, sleeve 62 outer walls are fixedly connected with belt pulley 69, motor is by belt 60 and belt pulley 69 interlocks.
Second main shaft 63 is provided with chuck 67 near an end of first main shafts and is positioned at the claw that is used for fixing workpiece 68 on the chuck 67.
First main shaft and second main shaft all have axial through hole, be provided with and the corresponding feed mechanism of the lead to the hole site of first main shaft in the side of first main shaft away from second main shaft, long bar-like raw material can stretch into the axially extending bore of first main shaft by the promotion of feed mechanism, feed mechanism can adopt common hydraulic pushing device, realizes that bar-like raw material moves along the Z axle.
Tail cylinder 64 is the short cylinder device of stroke, wherein piston rod 66 can drive 64 mass motions of tail cylinder, in the through hole of second main shaft connecting rod is housed, piston rod in connecting rod one end and the tail cylinder 64 is connected, the other end is connected with three claws 68 of chuck 67, claw 68 is the inclined-plane with the mating surface of chuck, and when connecting rod pulling claw 68, this inclined-plane makes three claws 68 draw fastening workpiece 7 in.
Be provided with in the through hole of second main shaft and be used for location of workpiece induction installation 8, referring to Fig. 4~7, flexible push rod 82 and inductive switch 84 are installed in the through hole of second main shaft successively, flexible push rod 82 at least a portion are extended the opening of this through hole towards first main shaft, one side, the holding wire 85 of inductive switch 84 extends second main shaft along this through hole from the opening away from first main shaft, one side, insert the digital control system of numerically controlled lathe again, the inwall of the through hole of second main shaft is provided with limited step, be provided with back-moving spring 81 between flexible push rod 82 and limited step, 81 pairs of flexible push rods 82 of back-moving spring apply the thrust towards first major axes orientation.
When second main shaft rotates, need to keep inductive switch 84 relative static with holding wire 85, can in through hole, one sleeve pipe be installed by bearing, inductive switch 84 and holding wire 85 are fixed in the sleeve pipe, the second main shaft afterbody also is with the tail cover by bearing, sleeve pipe overlaps relative fixed with tail and all cooperates by bearing with second main shaft, and what the tail cover was direct or indirect again keeps circumferential fixing with second main spindle box.
During feeding, workpiece 7 is gradually near the second main shaft end face, and begin to push flexible push rod 82, flexible push rod 82 compression reseting springs 81, and in the retraction through hole, when workpiece 7 terminations contact the end face 83 of chuck, promptly flexible push rod 82 also is in extreme position and triggers inductive switch 84, when flexible push rod 82 is in extreme position and the distance between the inductive switch 84 be W, promptly guarantee at least to enter in the induction zone that triggers inductive switch 84, after the digital control system of numerically controlled lathe is received signal in place, begin workpiece in place 7 is processed.
Referring to Fig. 8, the inventive method comprises the steps:
(1) bar-like raw material 71 is delivered to the chuck place of first main shaft along the axially extending bore of first main shaft, the claw that utilizes chuck is bar-like raw material 71 fixedly;
(2) utilize lathe tool that bar-like raw material 71 is processed towards the end face 72 of second main shaft, and then processing excircles 73 obtains the bearing roller semi-finished product, in the time of processing excircles 73 along the Y direction cutting knife that moves, bar-like raw material is cut, between the bar-like raw material of bearing roller semi-finished product and remainder, only link to each other by residual section 74 (diameter 4mm);
(3) under the condition that keeps first main shaft and second main shaft to rotate synchronously, drive second main shaft along close first main shaft of Z-direction, arrive the predetermined position that connects material until second main shaft, unclamp the claw of first main shaft, push bar-like raw material to second main shaft, induction installation in half-finished end face 72 triggerings of bearing roller second main shaft, be the flexible push rods of end face 72 extruding, flexible push rod compression reseting spring also triggers inductive switch, and the claw that utilizes first main shaft and second main shaft then is fixedly bar-like raw material and bearing roller semi-finished product respectively;
(4) rotation direction or the rotating speed of adjusting second main shaft, first main shaft and second main shaft twist off residual section 74;
(5) driving second main shaft resets until second main shaft away from first main shaft along Z-direction, utilize lathe tool that the bearing roller semi-finished product are processed towards the end face 75 of first main shaft again, obtain bearing roller, utilize manipulator that the bearing roller that obtains is shifted out numerically controlled lathe.
Whole process only needs a numerically controlled lathe at same workpiece, and same operator utilizes 36 second time to finish, and has improved production efficiency greatly according to six operations of the prior art, has saved labour and energy consumption.
Referring to Fig. 9~Figure 11, utilize the inventive method can the processing column bearing roller, arc bearing roller, conical bearing roller.Also process groove at end face as required, and the processing of chamfered edge to foreign round.
When processing arc bearing roller or conical bearing roller, the interior sidecar of the claw of second main shaft becomes cambered surface or inclined-plane, can match with the cylindrical contact-making surface of bearing roller like this, guarantees fastening effect.

Claims (3)

1. a method of utilizing two main shaft full-automatic numerical control machined into bearing rollers is characterized in that, comprises the steps:
(1) in the numerically controlled lathe of first main shaft and the second main shaft coaxial arrangement, bar-like raw material is delivered to the chuck place of first main shaft along the axially extending bore of first main shaft, the claw that utilizes chuck is bar-like raw material fixedly;
(2) utilize lathe tool successively bar-like raw material to be processed towards the end face and the cylindrical of second main shaft, obtain the bearing roller semi-finished product, in processing excircles along the Y direction cutting knife that moves, bar-like raw material is cut, between the bar-like raw material of bearing roller semi-finished product and remainder, only link to each other by residual section;
(3) under the condition that keeps first main shaft and second main shaft to rotate synchronously, drive second main shaft along close first main shaft of Z-direction, arrive the predetermined position that connects material until second main shaft, unclamp the claw of first main shaft, push bar-like raw material to second main shaft, trigger induction installation in second main shaft until the half-finished end face of bearing roller, the claw of first main shaft and second main shaft is fixedly bar-like raw material and bearing roller semi-finished product respectively;
(4) rotation direction or the rotating speed of adjusting second main shaft make first main shaft and second main shaft that residual section is twisted off;
(5) drive second main shaft and reset until second main shaft away from first main shaft, utilize lathe tool that the bearing roller semi-finished product are processed towards the end face of first main shaft again, obtain bearing roller along Z-direction.
2. the method for the two main shaft full-automatic numerical control machined into bearing rollers of utilization as claimed in claim 1 is characterized in that described residual section diameter is 1~8mm.
3. the method for the two main shaft full-automatic numerical control machined into bearing rollers of utilization as claimed in claim 2 is characterized in that, utilizes manipulator that the bearing roller that obtains is shifted out numerically controlled lathe.
CN201110041750XA 2011-02-21 2011-02-21 Method for processing bearing roller by double-spindle full-automatic numerical-control lathe Pending CN102259193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110041750XA CN102259193A (en) 2011-02-21 2011-02-21 Method for processing bearing roller by double-spindle full-automatic numerical-control lathe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110041750XA CN102259193A (en) 2011-02-21 2011-02-21 Method for processing bearing roller by double-spindle full-automatic numerical-control lathe

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Publication Number Publication Date
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103143978A (en) * 2013-03-28 2013-06-12 瓦房店光达轴承制造有限公司 Automatic dragging material roller processing machine tool
CN103197594A (en) * 2013-02-27 2013-07-10 上海维宏电子科技股份有限公司 Method of achieving double-zone machining in numerical control machine tool control system
CN103611951A (en) * 2013-11-06 2014-03-05 大连机床(数控)股份有限公司 Double-spindle numerical-control lathe with flat lathe bed
CN112589135A (en) * 2020-12-24 2021-04-02 张国建 Automatic cutting processing equipment for automobile aluminum alloy wheel hub

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103197594A (en) * 2013-02-27 2013-07-10 上海维宏电子科技股份有限公司 Method of achieving double-zone machining in numerical control machine tool control system
CN103143978A (en) * 2013-03-28 2013-06-12 瓦房店光达轴承制造有限公司 Automatic dragging material roller processing machine tool
CN103611951A (en) * 2013-11-06 2014-03-05 大连机床(数控)股份有限公司 Double-spindle numerical-control lathe with flat lathe bed
CN112589135A (en) * 2020-12-24 2021-04-02 张国建 Automatic cutting processing equipment for automobile aluminum alloy wheel hub

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Application publication date: 20111130