CN1882406A - Bar material supply device of numerically controlled automatic lathe - Google Patents
Bar material supply device of numerically controlled automatic lathe Download PDFInfo
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- CN1882406A CN1882406A CN 200480034559 CN200480034559A CN1882406A CN 1882406 A CN1882406 A CN 1882406A CN 200480034559 CN200480034559 CN 200480034559 CN 200480034559 A CN200480034559 A CN 200480034559A CN 1882406 A CN1882406 A CN 1882406A
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- push rod
- bar material
- material feeder
- automatic turning
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- 230000000750 progressive effect Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 description 24
- 238000000034 method Methods 0.000 description 23
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- 238000012546 transfer Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 5
- 230000000717 retained effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
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Abstract
There is provided a bar material supply device of a simple configuration suited to machining of a bar material without increasing machining cost even when a short bar material such as an end material is machined. The bar material supply device includes a stocker 12 for supplying a bar material w on an axis C of a spindle 230, a base 10 attached to a head stock 220, a push rod 15 disposed in the base 10 to move back and forth on the axis C and to push the bar material w fed from the stocker 12, a push rod guide 11 disposed in the base 10 to guide the back-and-forth movement of the push rod 15, a plurality of rollers arranged on both sides of the axis C of the base 10 to hold the push rod 15 on the axis C therebetween, one of the plurality of rollers being constituted as a driving roller 135 which is rotated by a driving body disposed in the base, and at least one of the other rollers excluding the driving roller 135 being constituted as a driven roller 132 which is rotated without any slippage with the push rod 15, and rotation detection means 133 for detecting the rotation of the driven roller 132.
Description
Technical field
The present invention relates on one side bar be sent to the through hole of the main shaft of CNC automatic turning machine process the bar material feeder of usefulness on one side.
Background technology
In numerical control working equipments such as CNC automatic turning machine, when processing smaller product, sometimes use the bar of long size as material.As this processing method of using CNC automatic turning machine, known in the past have: utilize bar material feeder from the rear of CNC automatic turning machine bar to be provided to working position, bar is rotated, with the leading section machining of bar technology (for example with reference to patent documentation 1) for the regulation shape with main shaft.
Patent documentation 1: the spy opens 2001-246502 communique (with reference to the record of [0008] section in Fig. 1 and specification).
Figure 14 relates to the example of a prior art of aforesaid bar material feeder, is the vertical view of its general structure of explanation.
In addition, the CNC automatic turning machine that possesses bar material feeder shown in Figure 14, be provided with: at enterprising main shaft 230 that moves freely and the guiding axle bush 232 that is disposed at these main shaft 230 the place aheads retired of the direction identical with main-shaft axis C, prop up under the state that is held in axis of guide lining 232 making, utilize machining tool processing from the front end of the outstanding bar W of main shaft 230.
As shown in figure 14, bar material feeder 3 is independent of CNC automatic turning machine and constitutes, and is disposed at the rear (the paper left of Figure 14) of above-mentioned numerically controlled lathe, the driving means 360 that is provided with the push rod 350 that promotes long size bar W and these push rod 350 advance and retreat are moved.Driving means 360, be provided with: the drive pulley 362 that can carry out driving bodies 361 such as the stepping motor of accurate rotational angle position adjustment or servomotor, be rotated by means of this driving body 361, the driven pulley 363 that disposes on the position relative with this drive pulley 362 and be wound on drive pulley 362 and driven pulley 363 between belt or no end cableway 364 such as chain, push rod 350 is connected to this no end cableway 364.And, by under the state on the tripod chuck 351 that rotatably is held on push rod 350 front ends (right-hand member of paper among Figure 14) in rear end driving body 361 being driven with bar W, in 364 walkings of no end cableway, push rod 350 is retired movingly in that main-shaft axis is enterprising, and bar W is offered main shaft 230.
But above-mentioned bar material feeder owing to make advance and retreat mechanism's complexity of mobile usefulness of bar, exists and maximizes and problem of ultra-high price.
Again, aforesaid possess the guiding axle bush 232 CNC automatic turning machine in, the restriction of factors such as the length of the parts of the position relation of the chuck 231 of axle bush 232 and main shaft 230 and processing and cut-out width owing to lead, can not process when surpassing the restriction of these factors, therefore the odd material of residual conduct must discarded short size bar.
Figure 15 represents that the CNC automatic turning machine with the tape guide axle bush carries out the situation of bar when adding the bar W process finishing in man-hour, between the chuck 231 of guiding axle bush 232 and main shaft 230, the short size bar of the odd material of residual conduct (following so short size bar is designated as " bar w ", to be different from " the bar W " of long size).
The length 1 of this bar w is that distance, the clamping length of chuck 231 clamping bar ws, the chuck 231 of front end till the chuck 231 that utilize parting tool T3 to cut off the bar w of product P arrives distance till push rod 350 front ends and push rod 350 by the clamping length sum of triangle chuck 351 clampings.
Like this, in the CNC automatic turning machine with guiding axle bush 232, although can also the production product P, the bar w of the length 1 that can not process be by remaining, and therefore existence causes the problem of the decrease in yield of material.
Also have, it also is possible utilizing other CNC automatic turning machines that do not have the guiding axle bush to process such bar w, if but use aforesaid existing bar material feeder with labyrinth, then have the new problem that the processing cost of bar w uprises and produce.
Therefore, for simplification and the miniaturization of seeking bar material feeder as described above, from bar material feeder, remove no end cableways such as chain or belt, with two roller clamping bars of relative configuration, the technology that the rotation by above-mentioned roller is moved the bar advance and retreat is suggested (for example with reference to patent documentation 2,3).
Patent documentation 2: the spy opens flat 7-60503 communique (with reference to the record of [0010] section in Fig. 2 and specification)
Patent documentation 3: the spy opens 2002-187001 communique (with reference to the record of [0015] section in Fig. 2 and specification)
In the technology of above-mentioned patent documentation 2 records, from its Fig. 2 as can be known,, utilize the bar of the rotation conveying of this transfer roller 4,4 as machined object with two transfer rollers, 4, the 4 clamping bars that dispose relatively.
In the technology of patent documentation 3 records, according to its Fig. 3 as can be known, also be to utilize two transfer roller 8a, 8b of clamping bar to carry bar again.In the technology of these patent documentation 3 records, transfer roller 8a, 8b are connected in drive motor 43, and the driving force of drive motor 43 is passed on two transfer roller 8a, the 8b.And, bar is being added man-hour, as shown in Figure 6, transfer roller 8a, 8b are kept out of the way on the position that does not influence bar.
Summary of the invention
But the technology of above-mentioned patent documentation 2,3 records all is to utilize the direct technology of carrying as the bar of machined object of transfer roller, and being not suitable for will provide to main shaft for the bar that material, for example triangle, quadrangle or hexagon etc. beyond the circle have the polygon section as the short size bar of odd material or the section shape of bar in machining.Again, particularly in the technology of patent documentation 3 records, do not want no end cableways such as chain or belt, though can seek the overall miniaturization of bar material feeder, but, need distribute mechanism that driving force uses evenly and make transfer roller 8a, 8b both sides keep out of the way the mechanism that uses away from bar during in bar processing beginning transfer roller 8a, 8b both sides, therefore the shortcoming that has structure to become complicated on the contrary.
The present invention solves the problem that these prior arts exist at one stroke, purpose is to provide a kind of bar material feeder simple in structure, and the miniaturization of the CNC automatic turning machine that can seek to process the such short size bar of bar with polygon section shape and odd material and the bar material feeder of cheap particularly are provided.
In order to solve above-mentioned existing problems, the present invention is the rear that is configured in CNC automatic turning machine, bar is sent to the through hole that the main shaft of the main spindle box that is held in above-mentioned CNC automatic turning machine is propped up in rotation freely, to the described bar of giving prominence to from the front end of described main shaft, process the bar material feeder of usefulness with the instrument that is installed on the knife rest, be provided with: the accumulator that bar is provided on the axis of described main shaft, be arranged at the rear of this accumulator, retire moving push rod in that the axis of described main shaft is enterprising, the push rod ways that guides the advance and retreat of this push rod to move, and be disposed at described axis both sides, the a plurality of rollers of the described push rod of clamping on described axis; One in described a plurality of roller is the driven roller that rotates by means of driving body, and at least one in other rollers except this driven roller constitutes the driven voller with the fricton-tight rotation of described push rod, possesses the rotation detection means of the rotation that detects described driven voller.
If adopt such structure, push rod advance and retreat under by the state of two roller clampings move.Bar is being promoted to advance by this push rod.In the present invention, as long as in above-mentioned a plurality of rollers is the driven roller that utilizes the driving body rotation to drive, therefore the driving means that the push rod advance and retreat are moved can be oversimplified and miniaturization.Therefore, the push rod feedway can be realized miniaturization and lightweight.
Again, in the present invention, mounting bar material feeding device and form an integral body on the fixed main shaft case of CNC automatic turning machine or mobile main spindle box can seek to carry out the miniaturization and the cheap of the CNC automatic turning machine of bar processing.For example, also can be with described push rod, described push rod ways, described a plurality of rollers and described driving body, be arranged on the matrix that is installed on main spindle box in aggregates.
In the present invention, described accumulator can be independent of described CNC automatic turning machine setting, also can with the setting in aggregates of described numerically controlled lathe.For example, have at described accumulator, store the reservoir of described material and provide to the axis of described main shaft from this reservoir under the situation of feed mechanism of described material, also in described reservoir and the described feed mechanism at least one can be arranged on the described matrix.That is to say, also described reservoir and described feed mechanism can be installed on the described matrix, described reservoir can be separated with described feed mechanism again, only described reservoir is installed on the described matrix.
Again, in the present invention, the advance and retreat that also can be arranged on described push rod move when limiting, and make and produce the sliding means that slides between described driving body and the described push rod.
In this case, also can be provided with freely with respect to the rotating shaft rotation of described driving body by described driven roller, described sliding means has rotary body and the relative means of pushing of pushing this rotary body and described driven roller of pressure to stipulate that form the one rotation with described rotating shaft.
If adopt this structure, when the advance and retreat of push rod being moved be restricted by bar and modes such as stopper contacts, driven voller detects push rod to be stopped, simultaneously, produce slip by sliding means between the driving shaft of driven roller and motor, therefore, do not need motor is applied the load detection means that the situation more than the fixed load detects, can further simplify the structure of bar material feeder.
Also have, the detection means of the front end that detects described bar also can be set in the place ahead of described accumulator.
Adopt this structure, then can after detection means detects the front end of bar, obtain the anglec of rotation of driven voller, can monitor the front position of bar always with this.
In addition, also can be provided with when the other end of described push rod retreats into the going-back position of regulation, limit the limiting means that retreats that described push rod moves.
If adopt this structure, can monitor the front position of push rod according to the length of push rod relation with the maximum going-back position that utilizes the push rod retreat limiting means and limit the time to moving always.
Again, by with the combination of the described detection means that is arranged on accumulator the place ahead, can obtain the length of bar.
And then, also can be provided with when an end of described push rod advances to the progressive position of regulation in the present invention, limit the limiting means that advances that described push rod moves.
If adopt this structure,, in the time of also can arriving the progressive position of regulation, judge that it is impossible further carrying out bar processing, and prepare next bar at an end of push rod even then do not understand the length of bar.
Bar material feeder of the present invention is suitable for providing the bar of the size shorter than main axis length, for example is suitable for the processing of the such short size bar of odd material that other CNC automatic turning machines can not process.And then bar material feeder of the present invention is not to utilize the direct device that transmits as the bar of machined object of transfer roller, therefore is not limited to circle, can be used in the processing that triangle, quadrangle or hexagon etc. have the bar of polygon section shape yet.
Again, the present invention can be again on the axis of described main shaft, be provided with have make the bar sent from described accumulator with the standby portion of the temporary transient standby of described push rod state of contact, and make the bar support means of the location division of described bar location at main-shaft axis.
If adopt this structure, then can send bar from accumulator to main-shaft axis midway what push rod retreated, make the bar standby of processing next time in position near main-shaft axis.Therefore, can shorten the time of bar conveying, can shorten process time.
Therefore the present invention can make the structure of bar material feeder become very simple, and can realize miniaturization and lightweight owing to constitute as mentioned above.And, by means of this, bar material feeder can be installed on and make its formation one on the main spindle box, can seek to make the CNC automatic turning machine densification and the cheap that possess bar material feeder.Again, bar material feeder of the present invention, the bar that also is suitable for processing the such short size bar of odd material He has the polygon section shape.
Description of drawings
Fig. 1 relates to an example of bar material feeder of the present invention, is the front view of its general structure of explanation.
Fig. 2 is the front view that makes the detailed description usefulness of the mobile push rod delivery section of push rod advance and retreat.
Fig. 3 is the side view of the push rod delivery section of Fig. 2.
Fig. 4 is used to illustrate the advance and retreat front view of ways structure of mobile usefulness of guiding push rod.
Fig. 5 is the schematic diagram that the principle of the length of bar w in the bar material feeder of asking this example is described.
Fig. 6 is the flow chart of the effect of bar material feeder in this example of explanation.
Fig. 7 is the key diagram of the effect of bar material feeder in this example of explanation.
Fig. 8 is the key diagram of the effect of bar material feeder in this example of explanation, is the continuous figure of Fig. 7.
Fig. 9 is the flow chart of bar material feeder effect of the 2nd example of explanation main shaft fixed.
Figure 10 is the key diagram of effect of the bar material feeder of this example of explanation.
Figure 11 is the key diagram of the effect of bar material feeder in this example of explanation, is the continuous figure of Fig. 7.
Figure 12 is the key diagram of the effect of bar material feeder in this example of explanation, is the continuous figure of Figure 11.
Figure 13 represents an example of bar support means.
Figure 14 relates to an example of the prior art of bar material feeder, is the vertical view of its general structure of explanation.
Figure 15 represents that carrying out bar with the CNC automatic turning machine that has the axle bush that leads adds man-hour, between the chuck of guiding axle bush and main shaft as the residual situation of short size bar of odd material.
Symbol description
1 bar material feeder
10 matrixes
11 ways
111 ways main bodys
112 stoppers (retreating limiting means)
113 sense switches
114 sense switches (limiting means advances)
12 accumulators
13 push rod delivery section
15 push rods
16 sensors
17 bar members to undertake
2 CNC automatic turning machines
210 knife rests
220 main spindle boxes
230 main shafts
231 chucks
W bar (odd material)
W ' retained material
The W bar
The specific embodiment
Be elaborated to being fit to an example of the present invention with reference to the accompanying drawings.
Fig. 1 relates to first example of bar material feeder of the present invention, is the front view of its general structure of explanation.
Also have, " preceding " is meant the front of the main shaft of the chuck that is provided with the clamping bar in the following description, promptly refers to the right side among Fig. 1, and " back " is meant the left side among Fig. 1.Again, in the following description, CNC automatic turning machine describes as having at the last main axle moving type automatic lathe that moves main spindle box freely of the direction (Z-direction) identical with main-shaft axis C.
[diagrammatic illustration of CNC automatic turning machine]
On the main spindle box 220 of CNC automatic turning machine 2, rotation supporting freely with main-shaft axis C equidirectional on have the main shaft 230 of through hole 230a.Bar w inserts through hole 230a from the rear end of main shaft 230, and inserts logical through hole 230a, is directed into the front end of main shaft 230.Front end at main shaft 230 is provided with the chuck 231 that clamping bar w uses, by means of the clamping of this chuck 231, and bar w and main shaft 230 rotations in aggregates.Again, above the front of main shaft 230, be provided with a plurality of instruments are installed, can make the instrument of regulation to be indexing to knife rest 210 on the Working position of bar w, bar w is processed by means of the instrument of installing on this knife rest 210.
[explanation of the general structure of bar material feeder]
In addition, the diameter of push rod 15, with roughly the same with the external diameter of bar w or slightly littler than it be good.Again, accumulator 12 in this example, and it is stored the reservoir of bar w and feed mechanism that is provided on the main-shaft axis C of bar w is being independent of main spindle box 220 and matrix 10 is provided with separately.
[explanation of the structure of push rod delivery section]
Fig. 2 makes push rod 15 at the enterprising part amplification front elevation of retiring the detailed description usefulness of moving push rod delivery section 13 of main-shaft axis C.Fig. 3 is the side view of the push rod delivery section 13 of Fig. 2.
As shown in the figure, push rod delivery section 13 has: be installed on the support 131 on the matrix 10 of bar material feeder 1, and rotation is arranged on this support 131 freely, from two rollers of clamping push rod 15, the i.e. driven voller 132 of the driven roller 135 of downside and upside up and down.
On the both sides, front and back of support 131, be formed on main-shaft axis C and go up the pilot hole 131a that leads for push rod 15.Driven roller 135 and driven voller 132 are from inserting the push rod 15 that is positioned behind the logical pilot hole 131a on the main-shaft axis C with roughly the same power clamping up and down.
On the axial region 141 between clutch plate 142 and the double nut 145, setting-in spring 143, by means of this spring 143 with the active force of regulation always with the contact member 144 of this clutch plate 142 by being pressed on the driven roller 135.The active force of spring 143 can be adjusted with respect to the restraint location of axial region 141 by changing double nut 145, and the power of the active force by adjusting spring 143 can be adjusted the size that produces the load of slip between clutch plate 142 and the driven roller 135.
In this example, on the surface of driven roller 135,, on the whole week, form the groove 135a that has less than the circular-arc or V font of the radius of the radius of curvature of push rod 15 in order to increase the contact area with push rod 15.So, little by making less than the frictional force that between push rod 15 and driven roller 135, works in the frictional force that works between clutch plate 142 and the driven roller 135, during power more than push rod 15 being applied such a certain size of the rotation that hinders driven roller 135, when for example the front end of bar w contacts with stopper, between contact member 144 and driven roller 135, produce and slide, thereby can bar w not applied excessive load.
On the other hand, the driven voller 132 of configuration above driven roller 135 is held in the axle 134 that is arranged on support 131 tops by means of rotatable the propping up freely of bearing 134a.Driven voller 132 be with push rod 15 by being pressed on the driven roller 135, along with the advance and retreat of push rod 15 move, fricton-tightly carry out the member of positive and negative rotation.
On the surface of driven voller 132, the interval with equalization forms concavo-convex 132a at the position that does not influence push rod 15 on the whole week.Again, on support 131, sensor installation 133 near driven voller 132.
The test section 133a of this sensor 133 points to concavo-convex 132a, detects concavo-convex 132a when driven voller 132 rotations.Then, the detected concavo-convex 132a of test section 133a is sent to the control device of not shown CNC automatic turning machine 2 or the control device of bar material feeder 1 as pulse signal.Above-mentioned control device is obtained the anglec of rotation of driven voller 132 and the amount of movement of push rod 15 according to this pulse signal.
Also have, carrying bar w midway, if the load effect that hinders bar w and push rod 15 to advance, moving of bar w and push rod 15 just stops, and proceeds to drive as the motor M of driving body.But owing to stop with the rotation of the push rod 15 fricton-tight driven vollers that contact 132, from the variation of the rotation of this driven voller, control device can be judged because the effect bar w and the advancing of push rod 15 of certain load stop.That is to say,, load detection means etc. are not set on motor M then, also can detect bar w and push rod 15 touches situations such as stopper or orientation tool, can seek to simplify structure and the control of motor M if adopt this example.
[explanation of ways]
Fig. 4 is the front view that is used to illustrate the structure that guides the mobile ways 11 of push rod 15 advance and retreat.
Be used to make the ways 11 of push rod 15 correct advance and retreat on main-shaft axis C, have: the ways main body 111 of tubular, be arranged at the sense switch 113,114 of these ways main body 111 rear and front ends, and be arranged at ways main body 111 the rear end, by with push rod 15 rear ends contact the restriction push rod 15 the stopper that retreats 112.
In the rear end of push rod 15, form the slightly big large-diameter portion 15a of diameter than other positions of push rod 15.The internal diameter of ways main body 111 forms with the external diameter of large-diameter portion 15a roughly the samely, move by in the inner peripheral surface of contact ways main body 111, making large-diameter portion 15a advance and retreat, push rod 15 main-shaft axis C enterprising retire moving.
Be arranged at the sense switch 114 of ways main body 111 front ends, be to detect the sense switch that the limit of advance of push rod 15 is used, advance by push rod 15, large-diameter portion 15a promotes the test section 114a of sense switch 114, above-mentioned control device stops the driving of motor M, and restriction push rod 15 does not move on it.
In this example, stopper 112 is construed as limiting push rod 15 and retreats the mobile limiting means that retreats, and sense switch 114 constitutes the limiting means that advances that push rod 15 is not advanced further after reaching assigned position.
Again, the sense switch 113 that is provided with on the rear end of ways main body 111 is to be used to detect the detector that the maximum going-back position of moving to of push rod 15 is used.Push rod 15 retreats, large-diameter portion 15a promotes the test section 113a of sense switch 113, and the rear end of push rod 15 touches stopper 112, the words that driven voller 132 stops the rotation, above-mentioned control device is judged push rod 15 and is moved to maximum going-back position, and the driving of motor M is stopped.
In this example, between the front end of the matrix 10 of main spindle box 220 and bar material feeder 1, the sensor 16 that the front end that detects bar w is used is set.This sensor 16 can utilize control device to monitor the front position of bar w always, can obtain the length of bar w simultaneously, monitors the back-end location of bar w, the front position of push rod 15 just always.
Fig. 5 is the schematic diagram that the principle of the length of bar w in the bar material feeder of asking this example is described.
As shown in Figure 5, the distance from the stopper 112 of ways main body 111 rear ends to sensor 16 is designated as L, and the length of push rod 15 is designated as H.
Push rod 15 is when the maximum going-back position that contacts with stopper 112 begins to advance, and the anglec of rotation that the displacement of push rod 15 can driven voller 132 is obtained.The distance h that push rod 15 only advances and stipulates promotes bar w by means of this, and when sensor 16 detected the front end of bar w, the length 1 of bar w was tried to achieve by length H that deducts push rod 15 from distance L and the distance h of advancing.
Utilize the front end of sensor 16 detection bar w, can monitor the front position of bar w always according to the anglec of rotation of driven voller 132 afterwards.Again, deduct the length of bar 1, can monitor the front position of push rod 15 always by front position from bar w.
Below, the effect to bar material feeder 1 with said structure describes with reference to the flow chart of Fig. 6 and Fig. 7,8 action diagram.
Before utilizing bar material feeder 1 supply bar w, whether retreat into when judging push rod 15 and stopper 112 position contacting (maximum going-back position) (step S101, Fig. 7 (a)).Whether push rod 15 retreats into and stopper 112 position contacting, can detect detection signal that large-diameter portion 15a (with reference to Fig. 4) obtain and on the direction that push rod 15 is retreated during drive motor M, whether driven voller 132 rotates is confirmed according to sense switch 114.
After step S101 confirms, only a bar w is provided to main-shaft axis C from accumulator 12 and goes up (step S102, Fig. 7 (b)).Again, main shaft 230 is retreated near bar conveying adorns on 1 the rearmost end position (step S103, Fig. 7 (b)) with main spindle box 220.
Then, being in opening with the chuck 231 of main shaft 230 front ends is condition (step S104), and drive motor M makes push rod 15 advance (step S105).In case the front end of push rod 15 touches the rear end of bar w, bar w just begins to advance to main shaft 230.
In case sensor 16 detects the front end (step S106) of bar w, the control device of CNC automatic turning machine or bar material feeder just utilizes the step shown in the front to calculate and obtain the length 1 of bar w.Again, whether bigger than the predefined length that can process to the length 1 of bar w, just whether bar w can process and judge (step S107).Consequently, in the length 1 that is judged as bar w in short-term, stop the driving of motor M, push rod 15 and bar w are halted than the length that can process, and output alarm signal untill further notice operator.
When the length 1 of bar w is machinable length, continue to make push rod 15 and bar w to advance, simultaneously, the front position of bar w and push rod 15 is monitored (step S108).
Push rod 15 inserts through hole 230a with bar w, on the position that stops at the bar surplus material (retained material w ') that does not touch last time processing residual on main shaft 230 front ends (step S109, Fig. 7 (c)).
Thereafter, main spindle box 220 advances to location (step S110, Fig. 7 (d)) behind the position of regulation.After this main spindle box 220 advanced, locatees, above-mentioned control device drive motor M once again advanced push rod 15, made bar w advance (step S111).
In case the front end of bar w arrives the front end of main shaft 230, then bar w is promoted, and retained material w ' is discharged to main shaft 230 outer (step S113, Fig. 7 (e)).Again, the front end that reaches main shaft 230 with the front end of bar w is condition (step S112), and above-mentioned control device makes motor M stop to drive, and makes push rod 15 stop to move (step S115).And then, at this moment prepare orientation tool T1 (step S114, Fig. 8 (a)).
After the preparation of orientation tool T1 was confirmed, above-mentioned control device drive motor M once again advanced push rod 15, made the preceding end in contact orientation tool T1 (step S116, S117, Fig. 8 (b)) of bar w.
In case the front end of bar w touches orientation tool T1, moving of bar w and push rod 15 just is limited, and produces slip between the driven roller 135 of bar material feeder 1 and clutch plate 142 (with reference to Fig. 3).On the other hand, owing to stopping of bar w and push rod 15, the rotation of driven voller 132 also stops, and therefore, even motor M is driving, the front end that above-mentioned control device also can be judged bar w touches orientation tool T1.Above-mentioned control device makes motor M stop to drive after carrying out this judgement.
Also have, in order further to improve the machining accuracy of bar w, after bar w touches orientation tool T1, with orientation tool T1 bar w is pushed back slightly, making bar w is that predefined correct length gets final product (step S118, Fig. 8 (c)) from main shaft 230 outstanding length.
Thereafter, with the length of bar w be machinable length as condition (step S119), make chuck 231 closures clamp bar w (step S120), make push rod 15 retreat (step S121) from main shaft 230.In this example, push rod 15 is retreated into till the maximum going-back position (step S122).
Afterwards, the instrument T2 for preparing processing usefulness replaces orientation tool T1, begins to carry out the processing (step S123, Fig. 8 (d)) of bar w by means of the instrument T2 of this processing usefulness.
If the process finishing that the instrument T2 of utilization carries out (step S124) is just downcut product with parting tool, unclamp chuck 231 (step S125), return step S114 then.Repeatedly carry out the step of step S116～step S125 thereafter.Step S119 in this process, if the length of bar w is shorter than the length that can process, then return to origin is prepared next bar w, carries out the following processing of step S101 repeatedly.
In the above description, be that example is illustrated with the CNC automatic turning machine of main axle moving type, even but use the CNC automatic turning machine of main shaft fixed also can be used in the present invention.
Below, with reference to the flow chart of Fig. 9 and the action diagram of Figure 10～Figure 12, second example under the main shaft fixed situation is described.
Also have, except main spindle box 220 is installed on main spindle box 220 for fixed and matrix 10 and forms the holistic situation, the formation of the bar material feeder of this example is identical with first example, therefore identical member, identical position is marked with identical symbol, simultaneously, the detailed description of the formation of bar material feeder 1 is omitted.
After the power supply of connecting bar material feeder 1 and CNC automatic turning machine,, judge whether push rod 15 retreats into and stopper 112 position contacting (maximum going-back position) (step S201, Figure 10 (a)) utilizing before bar material feeder 1 provides bar w.Whether push rod 15 retreats into and stopper 112 position contacting, can detect detection signal that large-diameter portion 15a (with reference to Fig. 4) obtain and on the direction that push rod 15 is retreated during drive motor M, whether driven voller 132 rotates is confirmed according to sense switch 114.
After the affirmation of carrying out step S201, only a bar w is provided to main-shaft axis C from accumulator 12 and goes up (step S202, Figure 10 (b)).
Then, being in opening with the chuck 231 of main shaft 230 front ends is condition (step S203), and drive motors M makes push rod 15 advance (step S204).In case the front end of push rod 15 touches the rear end of bar w, bar w just begins to advance towards main shaft 230.
In a single day sensor 16 detects the front end (step S205) of bar w, and the control device of CNC automatic turning machine or bar material feeder 1 is just obtained it according to the length 1 that step recited above is calculated bar w.Again, whether longer than predefined machinable length to the length 1 of bar w, just whether bar w can process and judge (step S206).Consequently, but when the length 1 of bar w is judged as less than processing length, stop drive motor M, push rod 15 and bar w are halted, and send alarm signal etc. and inform the operator.
When the length 1 of bar w is machinable length, continue to make push rod 15 and bar w to advance, simultaneously, the front position of bar w and push rod 15 is monitored (step S207).
Bar w is promoted by push rod 15, inserts the through hole 230a (with reference to step S208, Figure 10 (c)) of main shaft 230.Then, in case the front end of bar w arrives the front end of main shaft 230, w promotes by bar, and retained material w ' just is discharged to main shaft 230 outer (step S211, Figure 10 (d)).Again, arriving main shaft 230 front ends with the front end of bar w is condition (step S210), and above-mentioned control device makes motor M stop to drive, and makes push rod 15 stop to move (step S213).And then, at this moment prepare orientation tool T1 (step S212, Figure 11 (a)).
After confirming that orientation tool T1 is ready to, above-mentioned control device drive motor M once again advances push rod 15, makes the front end of bar w touch orientation tool T1 (step S214, S215, Figure 11 (b)).
In case the front end of bar w touches orientation tool T1, moving of bar w and push rod 15 just is limited, and just produces slip between the driven roller 135 of bar material feeder 1 and clutch plate 142 (with reference to Fig. 3).On the other hand, owing to stopping of bar w and push rod 15, the rotation of driven voller 132 also stops, and therefore, even motor M is driving, the front end that above-mentioned control device also can be judged bar w contacts with orientation tool T1.Above-mentioned control device makes motor M stop to drive after carrying out this judgement.
Also have, in order further to improve the machining accuracy of bar w, with after orientation tool T1 contacts, with orientation tool T1 bar w is pushed back a little at bar w, making from the outstanding length of the outstanding bar w of main shaft 230 is that predefined correct length gets final product (step S216, Figure 11 (c)).
, but with the processing length of bar w for processing length be condition (step S217), make chuck 231 closed clamping bar w (step S218), simultaneously, prepare machining tool T2 and begin to process (step S219, Figure 11 (d)) thereafter.
If process finishing (step S220) is just prepared parting tool product is downcut (step S221) from bar w.Repeat the processing of bar w, till the length of bar w is the length that can not process (step S212～221).
If be judged as the length of length of bar w at step S217 for processing, then make push rod 15 retreat (step S222), simultaneously, the bar w that will next process from accumulator 12 sends (step S223, Figure 12 (a)) to main-shaft axis C.
At this moment, for example on the main-shaft axis C in accumulator 12 the place aheads, prepare bar member to undertake 17 as shown in figure 13 as the bar support means with V word shape groove (V groove) 17a, touch under the state of the push rod 15 that retreats at the bar w of processing next time that sends from accumulator 12, make its standby on the 17b of inclined plane.In this example, this position of readiness constitutes " standby portion ".
In case the front end of push rod 15 arrives the rear end of the bar w of processing next time, then the bar w that contacts with push rod 15 falls among the V groove 17a, locatees on main-shaft axis C.
Thereby, when push rod 15 arrives maximum going-back position, can make push rod 15 begin to advance (step S224, Figure 12 (b)), can seek to shorten process time.
Above preferable example of the present invention is illustrated, still, the present invention is not subjected to any qualification of above-mentioned example.
For example, the detection of the anglec of rotation of driven voller 132 is not limited to detect the sensor 133 of the proximity switch etc. of concavo-convex 132a, also can use other anglec of rotation detecting sensors or encoder etc.
And then sense switch 113 stops motor M so long as can detect the large-diameter portion 15a of push rod 15, can access the positional precision of necessity of push rod 15, just needn't set especially as the stopper 112 that retreats limiting means.In this case, slide mechanism 140 only can use the mechanism of sliding to a rotation direction.
And then also have, in the above description, the structure that driven roller 135 and driven voller 132 respectively is provided with respectively is illustrated, and still, driven roller and driven voller also can be a plurality of.
Again, in the above description, the front position of inferring push rod 15 after the length of obtaining bar w has been described, front position to push rod 15 monitors, when push rod 15 advances to the position of regulation, be judged as further processing of bar w, must prepare the situation of next bar, but in the time of also can detecting the large-diameter portion 15a of push rod 15 at the sense switch 114 as the limiting means that advances, being judged as bar w can not further process.
And then, in first example, main spindle box with mobile model is an example, in second example, main spindle box with fixed is that example is illustrated, but, can certainly be the main spindle box of the bar material feeder employing fixed of first example, and the bar material feeder of second example uses the main spindle box of mobile model.
Industrial applicability
In the above description, can not add to provide with other CNC automatic turning machines that possess axis of guide lining The such short size bar of worker's odd material is that example is illustrated, but bar of the present invention supplies The supply of also can be applicable to the short size bar shorter than main shaft total length for device, or triangle, Quadrangle, hexagon etc. have the bar of polygon section shape.
Claims (10)
1. the bar material feeder of a CNC automatic turning machine, it is to be configured in to have main spindle box and rotate the rear of propping up the CNC automatic turning machine that is held in the main shaft on the main spindle box freely, the front end of bar is inserted the through hole of logical described main shaft, outstanding from the front end of described main shaft, the bar material feeder of the front end of described bar being processed with the instrument that is installed on the knife rest, it is characterized in that, be provided with:
The accumulator of bar is provided on the axis of described main shaft,
Be arranged at the rear of this accumulator, retire moving push rod in that the axis of described main shaft is enterprising,
The push rod ways that guides the advance and retreat of this push rod to move, and
Be disposed at described axis both sides, a plurality of rollers of the described push rod of clamping on described axis;
One in described a plurality of roller is the driven roller that rotates by means of driving body, and at least one in other rollers except this driven roller constitutes the driven voller with the fricton-tight rotation of described push rod,
The rotation detection means that possesses the rotation that detects described driven voller.
2. the bar material feeder of a CNC automatic turning machine, it is the bar material feeder of CNC automatic turning machine as claimed in claim 1, it is characterized in that,
On described main spindle box, matrix is installed,
Be provided with on this matrix: described axis enterprising retire moving freely described push rod, guide described push rod ways that these push rod advance and retreat move, described a plurality of rollers of the described push rod of clamping and the described driving body that makes at least one rotation in described a plurality of roller on described axis.
3. the bar material feeder of the CNC automatic turning machine described in claim 2, it is characterized in that, described accumulator, have the reservoir of storing described material and provide the feed mechanism of described material from this reservoir to the axis of described main shaft, at least one in described reservoir and the described feed mechanism is arranged on the described matrix.
4. as the bar material feeder of each described CNC automatic turning machine in the claim 1～3, it is characterized in that, be provided with and move when limiting in advance and retreat, between described driving body and described push rod, produce the sliding means that slides described push rod.
5. the bar material feeder of CNC automatic turning machine as claimed in claim 4, it is characterized in that, described driven roller can be provided with freely with respect to the rotating shaft rotation of described driving body, and described sliding means has rotary body and the relative means of pushing of pushing this rotary body and described driven roller of pressure to stipulate that form the one rotation with described rotating shaft.
6. as the bar material feeder of each described CNC automatic turning machine in the claim 1～5, it is characterized in that, the detection means that detects described bar front end is set in the place ahead of described accumulator.
7. as the bar material feeder of each described CNC automatic turning machine in the claim 1～6, it is characterized in that, be provided with when the other end of described push rod retreats into the going-back position of regulation, limit the limiting means that retreats that described push rod moves.
8. as the bar material feeder of each described CNC automatic turning machine in the claim 1～7, it is characterized in that, be provided with when an end of described push rod advances to the progressive position of regulation, limit the limiting means that advances that described push rod moves.
9. as the bar material feeder of each described CNC automatic turning machine in the claim 1～8, it is characterized in that described bar is an odd material or to have section be polygonal bar.
10. as the bar material feeder of each described CNC automatic turning machine in the claim 1～9, it is characterized in that, on the axis of described main shaft, be provided with have make the bar sent from described accumulator with the standby portion of the temporary transient standby of described push rod state of contact, and make the bar support means of the location division of described bar location at main-shaft axis.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003399123 | 2003-11-28 | ||
| JP399123/2003 | 2003-11-28 | ||
| JP215299/2004 | 2004-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1882406A true CN1882406A (en) | 2006-12-20 |
| CN100506442C CN100506442C (en) | 2009-07-01 |
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ID=37520161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800345590A Expired - Fee Related CN100506442C (en) | 2003-11-28 | 2004-11-22 | Bar material supply device of numerically controlled automatic lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100506442C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704113B (en) * | 2009-10-12 | 2012-01-25 | 大连科德数控有限公司 | Numerical control lathe for automatically machining cylindrical roller for bearing |
| CN102665974A (en) * | 2009-10-01 | 2012-09-12 | 西铁城控股株式会社 | Stock feeding apparatus |
| TWI496652B (en) * | 2009-07-09 | 2015-08-21 | Citizen Holdings Co Ltd | Processing materials and holding institutions |
| CN114375233A (en) * | 2019-09-12 | 2022-04-19 | 库奇乔瓦尼公司 | Device for feeding rods |
-
2004
- 2004-11-22 CN CNB2004800345590A patent/CN100506442C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI496652B (en) * | 2009-07-09 | 2015-08-21 | Citizen Holdings Co Ltd | Processing materials and holding institutions |
| CN102665974A (en) * | 2009-10-01 | 2012-09-12 | 西铁城控股株式会社 | Stock feeding apparatus |
| CN102665974B (en) * | 2009-10-01 | 2015-03-04 | 西铁城控股株式会社 | Stock feeding apparatus and processing system |
| CN101704113B (en) * | 2009-10-12 | 2012-01-25 | 大连科德数控有限公司 | Numerical control lathe for automatically machining cylindrical roller for bearing |
| CN114375233A (en) * | 2019-09-12 | 2022-04-19 | 库奇乔瓦尼公司 | Device for feeding rods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100506442C (en) | 2009-07-01 |
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