CN105828990A - Multi-spindle automatic lathe - Google Patents
Multi-spindle automatic lathe Download PDFInfo
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- CN105828990A CN105828990A CN201480062660.0A CN201480062660A CN105828990A CN 105828990 A CN105828990 A CN 105828990A CN 201480062660 A CN201480062660 A CN 201480062660A CN 105828990 A CN105828990 A CN 105828990A
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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
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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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/341—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission cam-operated
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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
- B23Q2210/00—Machine tools incorporating a specific component
- B23Q2210/002—Flexures
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- Mechanical Engineering (AREA)
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Abstract
This multi-spindle automatic lathe (10) is provided with: a spindle carrier (102) that rotates in an indexed manner; a plurality of main spindles (103) that are disposed on the spindle carrier (102) and that hold and rotate a workpiece; and a plurality of cross-slides (11) that have a blade (16) for machining the workpiece and that can move along the direction that approaches toward and separates from each main spindle (103). The cross-slides (11) machine the workpiece by moving along the direction that approaches toward and separates from each main spindle (103) within any given angle range by means of an eccentric cam (13) that is driven to rotate by a servo motor (21). As a result, it is possible to easily and accurately correct workpiece machined dimension errors stemming from differences in the distance from the rotational center of the spindle carrier and the rotational centers of each main spindle.
Description
Technical field
The present invention relates to multispindle automatic machine, more specifically, relate to correct accurately the multispindle automatic machine of the processing dimension error because of the workpiece caused to the difference of each distance of the multiple main shafts keeping workpiece from the revolution center of main shaft.
Background technology
As shown in Figure 10 to Figure 12, conventional multispindle automatic machine 100 includes: is indexed drive mechanism 101 and drives and with predetermined angle (in embodiment illustrated being 60 °) intermittent rotary (revolution), the spindle carrier 102 that i.e. indexes rotation centered by center of rotation O；And supported by spindle carrier 102, hold not shown workpiece and rotate multiple (in embodiment illustrated the being 6) main shaft 103 of (rotation).The rotary shaft 104 of each main shaft 103 is linked with the rotary shaft 105 arranged by the Central places of spindle carrier 102.Rotary shaft 105, via band 106 and gear 107, is driven motor 108 to drive.
Outer circumferential side at spindle carrier 102 is configured with multiple (in embodiment illustrated being 6) cross-slide 110 accordingly with each main shaft 103, make this cross-slide 110 advance to the workpiece held by main shaft 103 and rotate together with cutter 111 to fall back, workpiece is carried out turnery processing.Making spindle carrier 102 indexing rotate while carrying out such work pieces process successively in each position, being made for goods.
Delivering gear as conventional cross-slide 110, use gear cam drive mechanism, outer circumferential side at spindle carrier 102 configures ring gear 112 with spindle carrier 102 with core, makes ring gear 112 engage with the driving gear 115 being rotated driving by motor 114 via deceleration device 113 and rotate.The cross-slide that ring gear 112 is fixed with one end of the camshaft 116 at each cross-slide 110 drives gear 117 to engage.The cam surface 118a sliding contact of the sector (cross-slide cam) 118 that the cam-follower 119 being fixed on cross-slide 110 is fixed with the other end at camshaft 116, utilizes the rotation of sector 118 to make each cross-slide 110, i.e. cutter 111 advance to the workpiece rotated and falls back and be processed.It addition, in the case of workpiece model changes, by changing sector 118, adjust approach.
In conventional multispindle automatic machine 100, from the center of rotation O (revolution center) of spindle carrier 102 to distance R of center O1 (rotation center) of the multiple main shafts 103 holding workpiece, due to foozle etc. rather than identical.On the other hand have a problem in that the depth of cut of each cross-slide 110 driven by the ring gear 112 sharing each cross-slide 110 is the most identical on all of cross-slide 110, therefore bring impact can to the processing dimension of workpiece from the error of distance R of the center O1 of revolution center O to each main shaft 103, it is impossible to the diameter difference that specifying calibration produces on each main shaft 103.It addition, in order to carry out dimension correction, fix screw 120 owing to each main shaft 103 to be turned on instrument, turned position adjusts screw 121 and adjusts the position of cutter 111, and the positional precision after therefore adjusting is poor, needs experience and the intuition of operator.
It addition, disclose the multispindle automatic machine of following band NC: be included in the main shaft group on same base with multiple main shaft；In the multispindle automatic machine of the cutter group in the position opposed with each main shaft with the cutter of equal number, make the independence utilize NC device to control (referring for example to patent documentation 1) from cutter group of any cutter in cutter group.Further, in the multiple spindle lathe described in patent documentation 2, disclose and utilize the servo motor controlled by NC device, drive X-axis slide plate via leading screw, nut.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Laid-Open Patent Publication 63-57101 publication
Patent documentation 2: Japanese Unexamined Patent Publication 8-192303 publication
Summary of the invention
The problem that the present invention to be solved
However, it is believed that the band NC multispindle automatic machine disclosed in patent documentation 1 is by using NC motor to make ball-screw rotate, so that NC sliding part forward-reverse.So, the adjustment of approach sets numerical value in NC device, is not that skilled person also can be easily processed, but compares with cam-type multispindle automatic machine, it is envisioned that its requisite space increases, cost increase.Further, since eliminate the installation portion of corresponding cutter from cutter platform, therefore the change of NCization desired position is difficult, there is room for improvement.Multiple spindle lathe described in patent documentation 2 also uses ball-screw, there is requisite space and increase such problem.
The present invention completes in view of the above problems, its object is to provide a kind of multispindle automatic machine, it is possible to easily and highly accurately correct because of the processing dimension error of the workpiece produced to the difference of each distance of the center of rotation of each main shaft from the center of rotation of spindle carrier.
For solving the scheme of problem
The above-mentioned purpose of the present invention is constituted realization by following.
(1) a kind of multispindle automatic machine, including:
Spindle carrier, it carries out indexing with predetermined angle and rotates；
Multiple main shafts, it configures on the circumference centered by the center of rotation of spindle carrier at equal intervals, keeps workpiece respectively and rotates；And
Multiple cross-slides, its have processing workpiece instrument, can move closer to or farther from the direction of each main shaft,
Making spindle carrier revolve round the sun, and utilize each main shaft of rotation to make workpiece rotation be processed, multispindle automatic machine is characterised by,
Cross-slide utilizes servo motor to be rotated at any angular range by eccentric cam and drives, thus is moving closer to or farther from the direction of each main shaft.
(2) multispindle automatic machine as described in (1), it is characterised in that
Eccentric cam rotates via the harmonic speed reducer by servo motor driven.
(3) multispindle automatic machine as described in (1) or (2), it is characterised in that
Multiple cross-slides can utilize gear driving to carry out described eccentric cam rotating driving,
Cross-slide allows hand over gear and drives the driving carried out with servo motor to use.
(4) multispindle automatic machine as described in any one of (1) to (3), it is characterised in that
Processing dimension difference according to each workpiece stores the depth of cut corrected value of each cross-slide to each main shaft, the amount of movement of each cross-slide is controlled based on depth of cut corrected value, wherein, the processing dimension difference of each workpiece is because the center of rotation of spindle carrier produces to the difference of the distance at the center of each main shaft.
(5) multispindle automatic machine as described in (1), it is characterised in that
Described eccentric cam, according to the scope of the cam surface abutted with cam-follower, switches rotary speed produced by described servo motor.
(6) multispindle automatic machine as described in (1), it is characterised in that
For described eccentric cam, during processing described workpiece, in the scope of the cam surface abutted with cam-follower, the rotation making described servo motor be carried out stops the scheduled time.
(7) multispindle automatic machine as described in (1), it is characterised in that
For described eccentric cam, completing the described cross-slide of processing of described workpiece closest to the position of described main shaft, the rotation making described servo motor be carried out stops the scheduled time.
(8) multispindle automatic machine as described in (1), it is characterised in that
Set described servo motor, in order to change the approach of described instrument according to described workpiece.
(9) multispindle automatic machine as described in (1), it is characterised in that
The position that described eccentric cam offsets at the heart from which is provided with camshaft,
Described camshaft is change holding fix when processing each described workpiece.
Invention effect
According to the multispindle automatic machine of the present invention, owing to cross-slide drives by utilizing servo motor to carry out rotating at any angular range by eccentric cam, thus moving closer to or farther from the direction of each main shaft, therefore, it is possible to move cross-slide with high position precision.It addition, can be easily for amount of movement that each spindle settings is respectively different.Thereby, it is possible to carry out the processing of the high workpiece of precision.
Accompanying drawing explanation
Fig. 1 is the plane graph of the cross-slide of multispindle automatic machine involved in the present invention.
Fig. 2 is servo motor and the sectional view of harmonic speed reducer of the eccentric cam driving the cross-slide shown in Fig. 1.
Fig. 3 is the plane graph of the cross-slide of variation.
Fig. 4 is the figure of an example of the control method 1 employing multispindle automatic machine for explanation.
Fig. 5 is the figure of an example of the control method 2 employing multispindle automatic machine for explanation.
Fig. 6 is the figure of other examples of the control method 2 employing multispindle automatic machine for explanation.
Fig. 7 is the figure of an example of the control method 3 employing multispindle automatic machine for explanation.
Fig. 8 is the figure of an example of the control method 4 employing multispindle automatic machine for explanation.
Fig. 9 is the figure of an example of the control method 5 employing multispindle automatic machine for explanation.
Figure 10 is the plane graph of conventional multispindle automatic machine.
Figure 11 is to illustrate the axonometric chart that the summary of the multispindle automatic machine shown in Figure 10 is constituted.
Figure 12 is the plane graph of the conventional cross-slide shown in Figure 10.
The explanation of reference
11: cross-slide
13: eccentric cam
13A: ovum type cam (eccentric cam)
16: cutter (instrument being processed)
21: servo motor
22: harmonic speed reducer
30: control device
100: multispindle automatic machine
102: spindle carrier
103: main shaft
110: gear-driving cross-slide (cross-slide)
112: ring gear (master gear)
118: sector (eccentric cam)
O: revolution center (center of rotation of spindle carrier)
The center of rotation of O1: main shaft
R: from the distance of the center of rotation of the center of rotation of spindle carrier to main shaft
Detailed description of the invention
Below, an embodiment of multispindle automatic machine involved in the present invention is described in detail based on accompanying drawing.In addition, owing to the multispindle automatic machine of present embodiment is in addition to cross-slide and drive mechanism thereof, actually identical with the conventional multispindle automatic machine shown in Figure 10, the most in the following description, centered by the cross-slide shown in Fig. 1 and Fig. 2 and drive mechanism thereof, use Figure 10 and illustrate.
As depicted in figs. 1 and 2, the cross-slide 11 of the multispindle automatic machine 10 of present embodiment replaces the conventional gear being driven gear 117 (with reference to Figure 10) to carry out by cross-slide to drive, and utilizes the driving means 20 using the servo motor 21 controlled by NC as the source of driving to carry out drive cam shaft 12.At the one end 12a of camshaft 12, the eccentric cam 13 with round-shaped cam surface 13a is arranged on the position of the off-centring from this eccentric cam 13.
Driving means 20 is as shown in Figure 2, including the servo motor 21 controlled by NC and the harmonic speed reducer 22 being rotated driving by servo motor 21, at one end portion 12a is fixed with the camshaft 12 of eccentric cam 13 and rotates via the harmonic speed reducer 22 being fixed on the other end 12b.Harmonic speed reducer 22 is conventional known deceleration device, including wave producer 24, flexbile gear 25 and just taken turns 26.
Wave producer 24 includes oval cam 24a；Ball bearing shape parts 24b on this oval cam 24a, the inner ring of ball bearing shape parts is fixed on oval cam 24a, and outer ring can carry out elastic deformation via ball.Oval cam 24a is fixed in the rotary shaft 23 of servo motor 21, rotates together with rotary shaft 23.Flexbile gear 25 is the parts of the thin-walled cup-shaped being made up of metal elastic gonosome, is carved with external tooth at outer peripheral face, and cup like bottom (diaphragm) 25a is fixed on the other end 12b of camshaft 12.Just wheel 26 is the parts that rigid body is ring-type, is carved with the internal tooth of gear ratio flexbile gear 25 such as many 2 at inner peripheral surface.Just wheel 26 is fixed on the housing 27 utilizing rolling bearing 28 rotatably supporting block axle 12, and the external tooth of flexbile gear 25 engages with the internal tooth of just wheel 26.
And, when wave producer 24 rotates, it is flexbile gear 25 elastic deformation, while being flexbile gear 25 with the position of engagement of just wheel 26 owing to the internal tooth of just wheel 26 is poor with the number of teeth of the external tooth of flexbile gear 25 and move successively.During 24 turn of 1 circle of wave producer, the number of teeth that flexbile gear 25 rotates flexbile gear 25 and firm wheel 26 to the rightabout of the direction of rotation of wave producer 24 is poor, the amount of i.e. 2 teeth.Thus, the camshaft 12 being fixed on flexbile gear 25 rotates with the rotary speed after significantly slowing down.
So, harmonic speed reducer 22 is used as deceleration device, it is possible to utilize high speed reducing ratio to produce big moment from the servo motor 21 of low output, obtains high accuracy and the deceleration device of miniaturization.
As shown in Figure 1, in cross-slide 11, as conventional cross-slide 110, it is fixed on, for processing the cutter 16 of workpiece, the movable table 18 that can move relative to housing 27 by screw 15, and in movable table 18, is fixed with the cam-follower 14 opposed with the cam surface 13a of eccentric cam 13.It addition, be provided with the regulation screw 17 adjusting cutter position at the rear of cutter 16.Additionally, the center O1 of main shaft 103 is positioned on the line connected at the center of camshaft 12 and cam-follower 14.In movable table 18, it is provided around not shown hole portion at camshaft 12, in order to allow that movable table 18 self moves relative to camshaft 12.It addition, in the present invention, substantially without regulation screw 17, but in order to enable to share with aftermentioned conventional cross-slide 110, it is provided with regulation screw 17.
When utilizing the camshaft 12 driven by servo motor 21 that eccentric cam 13 rotates in any angular range driving, the cam-follower 14 abutted with the cam surface 13a of eccentric cam 13 is pressed according to the anglec of rotation of eccentric cam 13, make cross-slide 11, i.e. cutter 16 left and right directions in the drawings move, the workpiece held by each main shaft 103 and rotate is processed.So, by making eccentric cam 13 rotate back and forth movement at any angular range, thus cutter 16 is retreated at left and right directions.
Owing to each servo motor 21 is controlled by controlling device 30 individually NC, therefore, it is possible to eccentric cam 13 is rotated at arbitrary rotation angle range, make eccentric cam 13 swing rotary so that the anglec of rotation of eccentric cam 13, the i.e. amount of movement of cutter 16 become the amount of movement setting each main shaft 103.
In the case of with same size by each work pieces process, as shown in Figure 10, cutter 16 can be according to different from distance R of the center O1 of revolution center O of spindle carrier 102 to each main shaft 103 relative to the amount of movement of each main shaft 103.Specifically, for having the main shaft 103 of short distance R1 relative to distance R, needing the difference that amount is distance (R-R1) amount of movement of cutter 16 lengthened, distance R is distance R from revolution center O of the main shaft 103 the becoming standard center O1 to main shaft 103.Conversely, for having the main shaft 103 of distance R2, need the difference that amount is distance (R2-R) shortened by the amount of movement of cutter 16.
Owing to the difference from distance R of the center O1 of the center of rotation O of spindle carrier 102 to main shaft 103 for above-mentioned each main shaft 103 shows as the machining accuracy of goods, therefore each main shaft 103 is measured workpiece size and the depth of cut corrected value of each cross-slide 11 is stored in control device 30.Control device 30 and servo motor 21 is carried out NC control, make camshaft 12 (eccentric cam 13) rotate with the anglec of rotation corresponding with depth of cut corrected value.Thereby, it is possible to the processing dimension that correction is caused from the difference of distance R of revolution center O of the spindle carrier 102 center O1 to each main shaft 103 is poor.
This depth of cut correction operation need not rely on as in the past the intuition of rich experience, operator, only by just can easily change to controlling device 30 input instruction from not shown input equipment.It addition, multispindle automatic machine 10 can not be stopped, carrying out when running, prevent working performance from declining.
It addition, eccentric cam 13 is designed to the maximum pressing quantity maximum amount of movement more than each cutter 16 of cam-follower 14, it addition, make 13 swing rotary necessity angles of eccentric cam, thus the amount of movement of cutter 16 can be corresponding with respectively different multiple workpiece.
Additionally, in a series of manufacturing procedure, in roughing operation etc., be not necessarily required to above-mentioned high-precision processing in the case of having.The conventional cross-slide 110 driven by gear cam drive mechanism shown in Figure 12 is used in such manufacturing procedure, the cross-slide 11 driven by NC controlling organization of the present invention is used in the operation needing high-precision processing, it is thus possible to make conventional gear cam drive mechanism be blended in a multispindle automatic machine 10 with the NC controlling organization of the present invention, become combination construction.Thereby, it is possible to realize machining accuracy and the low cost of necessity and sufficiency.
Can easily carry out from NC controlling organization to the change of gear cam drive mechanism, camshaft 12 (band eccentric cam 13) and driving means 20 is taken off from cross-slide 11, replace, camshaft 116, sector 118 and cross-slide are installed and drive gear 117, and engage with ring gear 112.Additionally, drive gear 117 by pre-setting cross-slide on camshaft 12, and the clutch unit that the power from servo motor 21 carries out clutch is set such that it is able to be changed without camshaft 12 ground and use.Further, can carry out for arbitrary cross-slide 11 from NC controlling organization to the change of gear cam drive mechanism, the design freedom of manufacturing procedure improves.I.e., it is possible to matchingly NC controlling organization and gear cam drive mechanism are combined and be arranged in arbitrary position with the processing form of workpiece.
In addition, as long as make cam that cutter 16 the moves pressing quantity smooth change continuously relative to the cam-follower 14 of the anglec of rotation of cam, it is not limited to the circular eccentric cam 13 shown in Fig. 1, for example, it is also possible to be the eccentric cam 13A of the oval shape shown in Fig. 3.
As described above, multispindle automatic machine 10 according to present embodiment, owing to utilizing servo motor 21, with arbitrarily angled scope, eccentric cam 13 is rotated driving, thus cross-slide 11 relative to each main shaft 103 closer to or farther from direction move, therefore, it is possible to move cross-slide 11 with high position precision, it addition, easily respectively different amount of movement can be set for each main shaft 103.Thereby, it is possible to carry out the work pieces process that precision is high.
Further, since eccentric cam 13 rotates via the harmonic speed reducer 22 driven by servo motor 21, therefore, it is possible to utilize small-sized harmonic speed reducer 22, produce high-torque from the servo motor 21 of low output, make multispindle automatic machine 10 miniaturization.
Further, multiple cross-slides 11 can utilize gear driving to carry out sector 118 rotating driving, the driving carried out with servo motor 21 is driven to use owing to cross-slide 11 allows hand over gear, therefore drive with servo motor 21 and need the cross-slide 11 of high manufacturing accuracy, make gear drive and the cross-slide 110,11 of servo motor driven is blended in a multispindle automatic machine 10, it is able to ensure that the machining accuracy of necessity and sufficiency, and suppresses the cost of multispindle automatic machine 10.
Additionally, according to poor because producing the processing dimension of each workpiece from the center of rotation O of spindle carrier 102 to the difference of distance R of the center O1 of each main shaft 103, each main shaft 103 is stored the depth of cut corrected value of each cross-slide 11, the amount of movement of each cross-slide 11 is controlled based on depth of cut corrected value, therefore, it is possible to easily and highly accurately correct because of the processing dimension error of the workpiece produced to the difference of each distance R of the center of rotation O1 of each main shaft 103 from the center of rotation O of spindle carrier 102.
Herein, Fig. 4～Fig. 9 is used to illustrate to employ the various control methods of the multispindle automatic machine 10 of present embodiment, specifically control the control method of the cross-slide 11 that device 30 is carried out.Additionally, Fig. 4～Fig. 7 explanation is in each scope of the cam surface 13a of eccentric cam 13, abut the speed controlling under state, the rotating range being off cam 13 of Fig. 8 and Fig. 9 explanation with cam-follower 14.
＜ control method 1 ＞: make camshaft 12 the most at the uniform velocity rotate, makes the feed velocity (cutting speed) of cutter (cutter) 16 change.
That is, eccentric cam 13 is according to the scope of the cam surface 13a abutted with cam-follower 14, the rotary speed that switching servo motor 21 is brought.Specifically, as shown in Figure 4, so that camshaft 12 rotate 180 ° in case of time, cutter 16 was carrying out feed rapidly before absorption surface, make great efforts to shorten circulation time, complete period for middling speed feed from before absorption surface to roughing, carry out polish as low speed feed after this.
Such processing in the case of rotating with making cam mechanism as in the past, if the profile so setting cam is in the cards, but have a problem in that even if the profile of the cam manufactured exists room for improvement, it is also difficult to the profile of the cam that change has once manufactured.
According to above-mentioned control method, owing to only just can freely and easily change the rotary speed of camshaft 12, its scope by setting servo motor 21, therefore, it is possible to take into account shortening circulation time and dimensional accuracy, polish precision.
＜ control method 2 ＞: make camshaft 12 rotate (crawl rotation) discontinuously and cut off chip.
In machining, according to the difference of machining condition (approach, cutting speed, workpiece material etc.), long continuous print chip in the case of having, can be produced.Long chip often can not be discharged from workpiece well, and chip is likely rolled in workpiece, cutter 16, makes processing quality deteriorate.
Therefore, for eccentric cam 13, during by work pieces process, in the scope of the cam surface 13a abutted with cam-follower 14, the rotation making servo motor 21 be carried out stops the scheduled time.Specifically, as it is shown in figure 5, in the position switching to low speed feed from middling speed feed, carry out camshaft 12 stopping the scheduled time of pettiness and stopping " the crawl rotation " of feed such that it is able to carry out shorter for chip the action cut off.
Additionally, as the time making camshaft 12 stop, can be to process workpiece to turn the time of 1 circle.
It addition, as other control methods, as shown in Figure 6, it is also possible to make " crawl rotation " that camshaft 12 rotates discontinuously, carry out shorter for chip the action cut off.It addition, in figure 6, crawl rotation is carried out in middling speed feed region but it also may carry out crawl rotation in low speed feed region.Further, even if in the case of making eccentric cam 13 at the uniform velocity rotate, it is also possible to the scope of the cam surface 13a used when by work pieces process carries out crawl rotation.
＜ control method 3 ＞: stop camshaft 12 in the processing terminal short time and improve roundness.
In control method 2, improve the process of chip by the method for work in-process stopping feed, but in this control method, as it is shown in fig. 7, stop cross-slide 11 machining position, thus improve the roundness of processing workpiece.That is, for eccentric cam 13, completing the cross-slide 11 of processing of workpiece closest to the position of main shaft 103, the rotation making servo motor 21 be carried out stops the scheduled time.
Particularly, this control method 3, when being processed with the forming tool identical with the shape of processing workpiece, is additionally effective in the case of feed ratio is very fast.By making camshaft 12 stop, thus stay step slightly circumferentially owing to the shape cut of the cutter 16 when machining can be reduced, therefore improve roundness.
It addition, this control method 3 is also effective as the measure for chatter mark.
Additionally, make time that camshaft 12 stops and (2) control method again it is preferred to be that processing workpiece turns about 1 circle.
The rotation amount (anglec of rotation) of ＜ control method 4 ＞: adjustment cam axle 12 makes approach change, and punching is set automatization.
In this control method 4, set servo motor 21, in order to change the approach of cutter 16 according to workpiece.Specifically, as shown in Figure 8, in situation about being processed by workpiece A and in the case of being processed by workpiece B, the angle difference that camshaft 12 rotates is made.In conventional mechanical type, in the case of workpiece so changes, need to change eccentric cam 13 or change knife brackets and the position etc. of cutter 16, attended operation person manual work reset tailor-made industry, if but used this control method 4, the most only just could change approach by the setting of change servo motor 21.The effect that result obtains is: resets the shortening fixed time and causes productivity ratio to improve, even unskilled operator also is able to easy operation etc..
＜ control method 5 ＞: the processing of each workpiece slightly changes the holding fix (phase place) of camshaft 12, so that the range change of eccentric cam 13, alleviates the abrasion of cam surface 13a.
When the rotating range of eccentric cam 13 carries out reprocessabilty with same settings, the cam surface 13a of eccentric cam 13 can wear and tear.Although cannot be avoided the abrasion of the cam surface 13a caused with contacting with cam-follower 14, but as it is shown in figure 9, pass through slightly to change the holding fix unrelated with processing quality, it is possible to alleviate the abrasion of cam surface 13a.
It addition, the invention is not restricted to above-mentioned embodiment, it is possible to suitably carry out deforming, improvement etc..
The application is based on Japanese patent application 2013-235943 filed in 14 days November in 2013, and its content is incorporated herein by reference.
Claims (9)
1. a multispindle automatic machine, including:
Spindle carrier, it carries out indexing with predetermined angle and rotates；
Multiple main shafts, it configures on circumference centered by the center of rotation by described spindle carrier at equal intervals, keeps workpiece respectively and rotates；And
Multiple cross-slides, it has the instrument processing described workpiece, can move closer to or farther from the direction of described each main shaft,
Making described spindle carrier revolve round the sun, and utilize described each main shaft of rotation to make the rotation of described workpiece be processed, described multispindle automatic machine is characterised by,
Described cross-slide drives by utilizing servo motor to be rotated at any angular range by eccentric cam, thus is moving closer to or farther from the direction of described each main shaft.
2. multispindle automatic machine as claimed in claim 1, it is characterised in that
Described eccentric cam rotates via the harmonic speed reducer by described servo motor driven.
3. multispindle automatic machine as claimed in claim 1 or 2, it is characterised in that
Multiple described cross-slides can utilize gear driving to carry out described eccentric cam rotating driving,
Described cross-slide allows hand over described gear and drives the driving carried out with described servo motor to use.
4. the multispindle automatic machine as described in any one of claims 1 to 3, it is characterised in that
Processing dimension difference according to described each workpiece to store each described main shaft the depth of cut corrected value of described each cross-slide, the amount of movement of described each cross-slide is controlled based on described depth of cut corrected value, wherein, the processing dimension difference of described each workpiece is because the center of rotation of described spindle carrier produces to the difference of the distance at the center of described each main shaft.
5. multispindle automatic machine as claimed in claim 1, it is characterised in that
Described eccentric cam, according to the scope of the cam surface abutted with cam-follower, switches rotary speed produced by described servo motor.
6. multispindle automatic machine as claimed in claim 1, it is characterised in that
For described eccentric cam, during processing described workpiece, in the scope of the cam surface abutted with cam-follower, the rotation making described servo motor be carried out stops the scheduled time.
7. multispindle automatic machine as claimed in claim 1, it is characterised in that
For described eccentric cam, completing the described cross-slide of processing of described workpiece closest to the position of described main shaft, the rotation making described servo motor be carried out stops the scheduled time.
8. multispindle automatic machine as claimed in claim 1, it is characterised in that
Set described servo motor, in order to change the approach of described instrument according to described workpiece.
9. multispindle automatic machine as claimed in claim 1, it is characterised in that
The position that described eccentric cam offsets at the heart from which is provided with camshaft,
Described camshaft is change holding fix when processing described workpiece every time.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-235943 | 2013-11-14 | ||
| JP2013235943 | 2013-11-14 | ||
| PCT/JP2014/080234 WO2015072553A1 (en) | 2013-11-14 | 2014-11-14 | Multi-spindle automatic lathe |
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| Publication Number | Publication Date |
|---|---|
| CN105828990A true CN105828990A (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480062660.0A Pending CN105828990A (en) | 2013-11-14 | 2014-11-14 | Multi-spindle automatic lathe |
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| Country | Link |
|---|---|
| JP (1) | JP6471692B2 (en) |
| CN (1) | CN105828990A (en) |
| MY (1) | MY179924A (en) |
| WO (1) | WO2015072553A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117007305B (en) * | 2023-10-07 | 2024-01-05 | 江苏泰隆减速机股份有限公司 | Speed reducer with self-checking rotation precision function |
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| JPS54122478A (en) * | 1978-03-15 | 1979-09-22 | Mitsubishi Heavy Ind Ltd | Slide driving device for multi-spindle automatic lathe |
| JPS6357101A (en) * | 1986-08-26 | 1988-03-11 | Shimada Tekkosho:Kk | Multispindle automatic lathe with numerical control device |
| US5193422A (en) * | 1990-11-16 | 1993-03-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Multispindle automatic lathe |
| JPH08192302A (en) * | 1995-01-13 | 1996-07-30 | Tsugami Corp | Multispindle lathe |
| JPH08192303A (en) * | 1995-01-13 | 1996-07-30 | Tsugami Corp | Tool post for multispindle lathe |
| JPH08257803A (en) * | 1995-03-22 | 1996-10-08 | Tsugami Corp | Multispindle automatic lathe |
| CN201308999Y (en) * | 2008-12-05 | 2009-09-16 | 萍乡科宏机电制造有限公司 | Numerical control camshaft coping lathe |
| CN202556155U (en) * | 2012-02-28 | 2012-11-28 | 荆州环球汽车零部件制造有限公司 | Novel cam vehicle profile modeling device |
| CN203253938U (en) * | 2013-04-02 | 2013-10-30 | 浙江大学 | Tool rest capable of being used for lathe machining non-circular section shaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3267281D1 (en) * | 1981-07-31 | 1985-12-12 | Martin George Ollis | Blind hole anchor nut fastener |
-
2014
- 2014-11-14 JP JP2015547809A patent/JP6471692B2/en active Active
- 2014-11-14 CN CN201480062660.0A patent/CN105828990A/en active Pending
- 2014-11-14 WO PCT/JP2014/080234 patent/WO2015072553A1/en active Application Filing
- 2014-11-14 MY MYPI2016701721A patent/MY179924A/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54122478A (en) * | 1978-03-15 | 1979-09-22 | Mitsubishi Heavy Ind Ltd | Slide driving device for multi-spindle automatic lathe |
| JPS6357101A (en) * | 1986-08-26 | 1988-03-11 | Shimada Tekkosho:Kk | Multispindle automatic lathe with numerical control device |
| US5193422A (en) * | 1990-11-16 | 1993-03-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Multispindle automatic lathe |
| JPH08192302A (en) * | 1995-01-13 | 1996-07-30 | Tsugami Corp | Multispindle lathe |
| JPH08192303A (en) * | 1995-01-13 | 1996-07-30 | Tsugami Corp | Tool post for multispindle lathe |
| JPH08257803A (en) * | 1995-03-22 | 1996-10-08 | Tsugami Corp | Multispindle automatic lathe |
| CN201308999Y (en) * | 2008-12-05 | 2009-09-16 | 萍乡科宏机电制造有限公司 | Numerical control camshaft coping lathe |
| CN202556155U (en) * | 2012-02-28 | 2012-11-28 | 荆州环球汽车零部件制造有限公司 | Novel cam vehicle profile modeling device |
| CN203253938U (en) * | 2013-04-02 | 2013-10-30 | 浙江大学 | Tool rest capable of being used for lathe machining non-circular section shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| MY179924A (en) | 2020-11-19 |
| JP6471692B2 (en) | 2019-02-20 |
| JPWO2015072553A1 (en) | 2017-03-16 |
| WO2015072553A1 (en) | 2015-05-21 |
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Application publication date: 20160803 |