CN1162280A - Push type collet and seat assembley - Google Patents
Push type collet and seat assembley Download PDFInfo
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- CN1162280A CN1162280A CN 95196038 CN95196038A CN1162280A CN 1162280 A CN1162280 A CN 1162280A CN 95196038 CN95196038 CN 95196038 CN 95196038 A CN95196038 A CN 95196038A CN 1162280 A CN1162280 A CN 1162280A
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- collet
- workpiece
- leading section
- seat
- block
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Abstract
A push-type collet and seat assembly has a collet including an elongated cylindrical body having a rear end, a forwardly tapered front end, an opening extending through the collet, and slots extending through at least the front end to divide the front end into compressible portions. A workpiece is inserted into the collet and extends forwardly of the compressible portions. A seat receives the collet so that, when the front end is forcibly wedged against the seat, the compressible portions are squeezed to fix the workpiece relative to the collet. A stop is disposed forwardly of the seat and adapted to receive the workpiece front end so that the stop limits the forward movement of the workpiece. A drive generally simultaneously moves the workpiece against the stop and moves the collet against the seat, such that the workpiece abuts the stop prior to the collet fixing the workpiece.
Description
The present invention relates to collet and holder assembly, more particularly, relate to pushing-type collet and holder assembly, it can make workpiece be machined to accurate length and need not " end face processing " cutting.
In cutting technology, it is known using common pull-type collet so that make blank (for example workpiece such as bar or pipe) location.If blank need be machined to accurate length, as long as think and must carry out " end face processing cutting ", so, above-mentioned technology is exactly an acceptable.Because blank is pulled back by collet when fastening collet, so need carry out end face processing cutting.Even the vary in diameter of the blank that is positioned is when very little, and the above-mentioned amount of pulling back also is uncontrollable, even this is because the accurate moment that diameter very little variation also will change collet begins to clamp and finally make blank not travel longitudinally with respect to collet.
It also is known using common " regular length " collet.Regular length collet and pull-type collet different are vertically, laterally and radial direction close on the blank.When needs are worked into accurate length with blank, when collet clamps, do not act on the block, thereby must carry out end face processing cutting owing to blank has pressure.Because the surface that can't predict the blank that is positioned will be to clean fully and do not have an irregular part, if thereby blank do not have pressure to act on the block will to cause uncertain factor.If blank is exerted pressure to block when collet clamps, so,, thereby can significantly reduce or eliminate uncertain factor because this will reduce or eliminate the influence of above-mentioned scrambling to the full extent.
Therefore, an object of the present invention is to provide a kind of collet and holder assembly, it can make work be worked into accurate length and need not " end face processing " cutting.
Another object of the present invention provides a kind of said modules that adopts the pushing-type collet.
Thereby another object of the present invention provide a kind of can be by blank be pressed to the said modules that block reduces the influence of the minute protrusions on the blank front end as far as possible.
A further object of the invention provide a kind of easy to manufacture, cost is low and application maintenance economy, easy said modules.
Have been found that at the pushing-type collet of the workpiece that is used for having a front end and holder assembly and can realize above-mentioned and relevant purpose of the present invention.This assembly comprises a pushing-type collet, this collet comprises an oval cylindrical member, it has a rearward end, one and vertically passes the hole of collet and vertically pass above-mentioned at least leading section towards the inwardly tapered leading section of its front end, one, be communicated with above-mentioned hole, leading section be divided into the slot device of the compressible portion of separation.A seat partly is received in collet wherein, thereby when the leading section of collet was born against forcibly, the compressible portion extruding workpiece of leading section made workpiece fix with respect to collet.A block is provided with present preset distance place, the place ahead, and be suitable for admitting the front end of workpiece, thereby when the workpiece in the hole of inserting collet when the compressible portion of leading section extends forward, the front end of workpiece is born against block forcibly, the travelling forward of stop limits workpiece.Be provided with drive unit, it is used for substantially side by side moving forward workpiece so that make the workpiece front end bear against block forcibly towards block, and make collet towards seat reach so that make the leading section of collet bear against seat forcibly, thereby collet make workpiece with respect to collet fixing before, make workpiece against block.
In a preferred embodiment, seat can be rotated by the leading section of collet, and block can be rotated by the leading section of workpiece.Be provided with and make block with respect to seat, thereby with respect to the device of the leading section withdrawal of workpiece.The rearward end of collet preferably is provided with external screw thread, and assembly comprises a nut with inner bolt hole to admit threaded rearward end, and this nut is suitable for rotating collet.
In addition, the present invention also comprises said modules and the combination with workpiece of a front end.
Consult the following drawings, read detailed description to the illustrated embodiment of recommending and can more be expressly understood above-mentioned and relevant purpose, feature and advantage of the present invention.
Fig. 1 is in the longtitudinal view of opening the assembly of the present invention in the location, and one one has been omitted so that represent inner detailed structure among the figure, and workpiece is represented by dotted lines;
Fig. 2 is the view that is similar to Fig. 1, but assembly is in closed orientation, and workpiece is represented with solid line;
Fig. 3 is the amplification longtitudinal view of an assembly part, and assembly is in the closed orientation.
Now consult Fig. 1 and 2, wherein represent a pushing-type collet and holder assembly 10.Assembly 10 is in and opens in the location among Fig. 1, and collet and workpiece can be done relative motion, and assembly 10 is in the closed orientation among Fig. 2, and workpiece and collet can not be done relative motion.
Certainly, the major part of assembly 10 is pushing-type collet 12 and seat 14, during collet partly accommodates and is present.A block 16 is provided with present preset distance place, 14 the place ahead, and therefore, when the hole that workpiece 18 was inserted collet 12, when effectively bearing against on block 16 by collet 12 then, block 16 can limit travelling forward of workpiece 18.Be provided with drive unit 20, so that workpiece 18 is moved facing to block 16 forward and collet 12 14 is moved facing to seat forward, thus at collet 12 fixation workpieces 18 in case make workpiece 18 before the lengthwise movement with respect to collet 12 forcibly against block 16.
Now consult Fig. 3, pushing-type collet 12 comprises an oval cylindrical member 22, and it has a rearward end 24 and a leading section 26, and leading section 26 is tapered tapered towards its front end.Collet 12 is vertically passed in a hole 30, and the parallel slot 32 of a plurality of configurations such as (among this figure being 4) angular distance vertically passes leading section 26 at least and is communicated with hole 30, thereby leading section 26 is divided into a plurality of (among this figure being 4) independently compressible portion 34.The rearward end 24 of collet 12 preferably is provided with external screw thread, so that engage with nut with inner bolt hole or like parts, to admit threaded rearward end 24.Nut itself is furnished with drive unit 20, and this point will describe in detail hereinafter.
Because pushing-type collet of the present invention, except that the direction of leading section 26 (leading section is what to be pulled outwardly to its front end in pull-type collet), be similar to common pull-type collet, thereby collet 12 needn't be given unnecessary details in this article itself again.The personnel that are familiar with the collet technology can easily make and use according to collet 12 of the present invention.
Blank is that workpiece 18 generally is bar or tubulose, can be square cylindrical, also can be hollow or solid, it is machined to accurate length and need not " end face processing " cutting.In the workpiece 18 general holes 30, its compressible portion 34 from leading section 26 is extended forward by rearward end 24 insertion collets 12.Workpiece 18 limits a flat substantially front end, and as shown in Figure 1, the rear end with block 16 vertically separates slightly.
Seat 14 forms one in its back-end and is suitable for the recess 40 that part is admitted collet 12, thereby clamp-on the recess 40 of seat and during when collet leading section 26 against seat 14, the compressible portion 34 of collet leading section 26 is squeezed on the periphery of workpiece 18, thereby fixation workpiece is in case travel longitudinally or rotate with respect to collet 12.For this purpose, the sidewall of Zuo recess 40 is tapered so that force the compressible portion 34 mutual convergences of collet and temporarily eliminate therebetween groove 32 to its front end.The recess 40 of seat is communicated with the hole 42 of passing seat 14 remainders, and its shape and size can connect the workpiece front end 38 that passes from it.
Seat 14 preferably is installed in rotation in the front mounting plate 44 by bearing 46, and seat 14 can be rotated with respect to static installing plate 44.Cooperation between collet leading section 26 and the collet seat 14 is general tightly must to be enough to make collet 12 and seat 14 to rotate (some are arranged or do not skid) together as an assembly.This rotating being connected in the mechanical technique is known, need not here to give unnecessary details.
In case 50 withdrawals of block plane also will be shed through mach workpiece 18, its original position is just returned on block plane 50, collet 12 returns its original open position, compressible portion 34 forms groove 32 (as shown in Figure 1) once more, workpiece 18 is sent to by the hole 42 of collet hole 30, seat recess 40, seat, and butt block plane 50.
Though in the process of specific workpiece of processing or a series of specific workpiece, front mounting plate 44 and block 16 all are static, but, block 16 can be regulated in the vertical by retracting device 54, thereby make it spaced apart, thereby make the length of the cutting workpiece 18 of a series be different from another serial workpiece.
On the other hand, for the workpiece 18 of a particular type, back installing plate 64 is not only in each cutting operation series but also also transportable in each independent cutting operation.Therefore, installing plate 64 is installed around supporting member 68 by linear bearing 66 behind every end, and supporting member 68 is fixed in the front mounting plate 44 at 70 places, and installing plate 64 vertically extends back after passing.Linear bearing 66 is arranged in the bearing assembly 67, and bearing assembly 67 is fixedly mounted on the installing plate 64 of back so that with its motion.Each of two supporting members 68 is fixed with a head that extends laterally 72 at its rear portion by screw 74.Stage clip 76 end directly or indirectly is contained in the head 72, and the other end is contained on the installing plate of back.
Because drive unit 20-promptly, compression 76-is used for back installing plate 64 is shifted near front mounting plate 44 forward, thereby is provided with second drive unit 80, and it is used for backward back installing plate 64 further being moved apart front mounting plate 44 after each cutting operation.Second drive unit 80 can comprise a cylinder or fluid cylinder 82, and it is by being threadedly engaged with back installing plate 64, so that move with it as a unit.One end of piston 84 is arranged in the cylinder 82 so that move back and forth, and the other end then is bearing on the rear surface of front mounting plate 44.Piston 84 passes the part of back installing plate 64 preferably by linear bearing 66 ' screen in order to avoid be in contact with it.One second drive unit 80 though only drawn,, at each end of installing plate 44,64 one second drive unit 80 is arranged all.The cylinder 82 of two second drive units 80 is general by a shared source, and for example, a shared air line drives.
For make collet 12 subsequently installing plate 64 vertically move and rotate with respect to back installing plate 64, the rearward end 24 of collet 12 engages by the housing 90 of screw thread with a formation nut.Housing 90 passes back installing plate 64 (in the middle of supporting member 68) backward, and has a nut type front end and engage with the threaded rear portion 24 of collet 12, and then stretch out backward from back installing plate 64 rear end.Housing 90 is fixed on the installing plate 64 of back by the bearing assembly 92 that comprises bearing 94, thereby housing 90 can be rotated with respect to back installing plate 64.Bearing assembly 92 in the front flange of housing 90 and a nut 96 center fixed on the installing plate 64 of back, 98 in bight is fixed on the back side of back installing plate 64 by screw 100, is installed on the housing 90 so that roll-shell 90 and workpiece 18 by driving the drive pulley 102 that belt 104 drives.Can make workpiece 18 is being known with respect to the mechanical connection that back installing plate 64 vertically moves and rotates in the art, thereby repeats no more here.
Consulting Fig. 1 now, for operating assembly 10, is that workpiece 18 is arranged in the collet 12 with blank.Workpiece 18 preferably passes housing 90 and collet 12 and sends back plane 50 until workpiece front surface 38 convergences and contact blocks 16 forward to.Distance between collet 12 and the block 16 is set up according to the cutting workpiece Len req.
Consult Fig. 2 below,, make piston 84 backward in the retraction cylinder 82 for example by the air pressure in the release cylinder 82, thus each second drive unit 80 of pine oil.Then, comprise drive unit 20 biasing force forward of effect on the installing plate 64 of back of stage clip 76, it is driven to front mounting plate 44.When the front end 26 of collet 12 slipped in the tapered recess 40 of seat 14 forward, the inner conical of seat engaged the male-tapered of workpiece front portion 34, thus when on the collet 12 present 14 during propelling compressible portion driven and got together.
Two actions appear this moment.At first, the inside motion of the compressible portion 34 of collet head (by collet leading section 26 tapered recess and in travel forward cause) make compressible portion 34 on workpiece, act on a radial load so that workpiece is locked on the throne.The second, travelling forward of collet 12 finally spurs workpiece 18 and workpiece 18 accurately located with respect to block 16.When collet 12 was closed on workpiece, the driving pressure forward of collet 12 pushed away workpiece front end 38 on stop-surface 50 securely, thereby has reduced the influence of workpiece end minute protrusions to greatest extent.
Therefore as can be seen, the key effect of drive unit is side by side workpiece 18 to be leaned against on the block 16 and with collet 12 to reach to lean against on the seat 14 to reach, thereby bear against the leading section of collet forcibly, collet 12 is fixed workpiece 18 with respect to collet 12 before, make work butt block 16.
When being enough to firmly fix workpiece so that finished the adjustment of workpiece 18 when carrying out machined (that is cutting), the pressure forward that produces on the collet 12 sets.As long as block 16 and collet have enough rigidity, either large or small pressure will not influence the location of workpiece 18.(because pressure descend) when block 16 during from its position pine oil, a little can take place and move in workpiece 18 and collet 12, but this motion is constant between each workpiece, does not depend on the variation of diameter of work.Therefore, the initial setting that separates between collet and block should be taken into account the factor of this small reach.
When workpiece 18 was driven belt pulley 102 (by housing 90 effects) rotation, the length that needs can easily be processed or be cut to the part that workpiece 18 stretches out forward from the hole 42 of seat by common means.Before machined, retracting device 54 makes back plane 50 withdrawal of block 16, thereby workpiece 18 is fallen or unloads from assembly 10.
At this moment, for example introduce air pressure at cylinder 82 and start second drive unit 80, thereby make piston 84 push front mounting plate 44 forward, the result makes 64 withdrawals of back installing plate, thus the stage clip 76 of compressible drive device 20.Simultaneously, collet leading section 26 is withdrawn from from the recess 40 of seat, and each compressible portion can be separated, and forms groove 32 once more.The outside mobile pine oil of compressible portion 34 setting of collet on workpiece 18, thereby workpiece is become again can vertically move and rotate, as shown in Figure 1 with respect to collet 18.In case workpiece 18 is sent to and is suitably located with respect to block 50, just drive unit 20 is started, and make piston 84 keep quiet, like this, system just prepares ready (that is pine oil second drive unit 80) once more.
In a word, the invention provides a kind of collet and holder assembly, it can make workpiece be machined to accurate length and need not end face processing cutting.The present invention has adopted a kind of pushing-type collet, and has reduced the influence of minute protrusions on the workpiece front end as much as possible by the mode of workpiece being pressed to block.This modular construction is simple, and is cheap for manufacturing cost, and the use and maintenance economical and convenient.
Though described equipment of the present invention according to horizontal longitudinal register with forward and backward installing plate, but obviously identical equipment also can use according to vertical longitudinal register, wherein forward and backward installing plate becomes upper and lower installing plate respectively, that is, Fig. 1 to 3 will become front view.In this application, gravity makes workpiece 18 by collet 12 whereabouts and against block plane 50.Then, cylinder forces upper plate 64 to shift to lower plate 44 downwards, thereby forces collet 12 to enter seat 14 and force workpiece 18 tight contact blocks planes 50, and workpiece 18 locks on the throne the most at last.
Since illustrated and illustrated the preferred embodiments of the present invention, so various improvement and variations to it obviously are exactly conspicuous concerning those skilled in the art.Therefore, scope of the present invention is not by top explanation but is defined by the claims.
Claims (15)
1. a pushing-type collet and holder assembly that is used to have the workpiece of a front end, it comprises:
(A) pushing-type collet, it comprises an oval cylindrical member, it has a rearward end, one inwardly towards the tapered leading section of its front end, a leading section that vertically passes the hole of described collet and vertically pass described at least collet, be communicated with described hole, described collet leading section be divided into the slot device of the compressible portion of separation;
(B) seat, it partly is received in described collet wherein, thereby when described collet leading section was born against forcibly in described seat, the compressible portion of described collet was compressed on the workpiece, and workpiece is fixed with respect to described collet;
(C) block, it is arranged on described seat preset distance place, the place ahead and is suitable for admitting the workpiece front end, thereby when the workpiece in the hole of inserting described collet when the described compressible portion of described fore-end extends forward, the workpiece front end is born against described block forcibly, the travelling forward of described stop limits workpiece; And
(D) drive unit, it is used for substantially side by side making workpiece to make the workpiece front end bear against block towards block reach and pressure, and make described collet towards described seat reach and make described collet leading section bear against described seat forcibly, thereby make workpiece workpiece is resisted against on the described block before fixing with respect to collet at described collet.
2. assembly according to claim 1 is characterized in that: described seat can be rotated by described collet leading section.
3. assembly according to claim 1 is characterized in that: described block can be rotated by the workpiece leading section.
4. assembly according to claim 1 is characterized in that: also comprises being used to make described block with respect to described seat, thereby the device of also withdrawing with respect to the workpiece leading section.
5. assembly according to claim 1, it is characterized in that: the rearward end of described collet is provided with external screw thread, described assembly also comprises a nut, and this nut has an inner bolt hole so that admit the described externally threaded collet rearward end that is provided with, and described nut is suitable for rotating described collet.
6. assembly according to claim 1 and combination with workpiece of a front end.
7. a pushing-type collet and holder assembly that is used to have the workpiece of a front end, it comprises:
(A) pushing-type collet, it comprises an oval cylindrical member, it has a rearward end, one inwardly towards the tapered leading section of its front end, a leading section that vertically passes the hole of described collet and vertically pass described at least collet, be communicated with described hole, described collet leading section be divided into the slot device of the compressible portion of separation;
(B) seat, it partly is received in described collet wherein, thereby when described collet leading section was born against forcibly in described seat, the compressible portion of described collet was compressed on the workpiece, workpiece is fixed with respect to described collet, and described seat can be rotated by the leading section of described collet;
(C) block, it is arranged on described seat preset distance place, the place ahead and is suitable for admitting the workpiece front end, thereby when the workpiece in the hole of inserting described collet when the described compressible portion of described fore-end extends forward, the workpiece front end is born against described block forcibly, travelling forward of described stop limits workpiece, described block can be rotated by the leading section of workpiece;
(D) drive unit, it is used for substantially side by side making workpiece to make the workpiece front end bear against block towards block reach and pressure, and make described collet towards described seat reach and make described collet leading section bear against described seat forcibly, thereby make workpiece workpiece is resisted against on the described block before fixing with respect to collet at described collet; And
(E) be used to make the device of described block with respect to described seat withdrawal.
8. assembly according to claim 1, it is characterized in that: the rearward end of described collet is provided with external screw thread, described assembly also comprises a nut, this nut has an inner bolt hole so that admit the described collet rearward end that is provided with outer spiral shell strand, described nut by be threaded over described be provided with on the externally threaded collet rearward end and with described drive unit interoperation.
9. a pushing-type collet and holder assembly that is used to have the workpiece of a front end, it comprises:
(A) pushing-type collet, it comprises an oval cylindrical member, it has a rearward end, one inwardly towards the tapered leading section of its front end, a leading section that vertically passes the hole of described collet and vertically pass described at least collet, be communicated with described hole, described collet leading section be divided into the slot device of the compressible portion of separation;
(B) workpiece that extends forward in hole of inserting described collet and from the compressible portion of described collet leading section, described workpiece has a leading section;
(C) seat, it partly is received in described collet wherein, thereby when described collet leading section was born against forcibly in described seat, the compressible portion of described collet was compressed on the described workpiece, and workpiece is fixed with respect to described collet;
(D) block, it is arranged on described seat preset distance place, the place ahead and is suitable for admitting the workpiece front end, thereby when the workpiece front end is born against described block forcibly, the travelling forward of described stop limits workpiece; And
(E) drive unit, it is used for substantially side by side making workpiece to make the workpiece front end bear against block towards block reach and pressure, and make described collet towards described seat reach and make described collet leading section bear against described seat forcibly, thereby make workpiece workpiece is resisted against on the described block before fixing with respect to collet at described collet.
10. assembly according to claim 9 is characterized in that: described seat can be rotated by described collet leading section.
11. assembly according to claim 9 is characterized in that: described block can be rotated by the workpiece leading section.
12. assembly according to claim 9 is characterized in that: also comprise being used to make described block with respect to described seat, thereby the device of also withdrawing with respect to the workpiece leading section.
13. assembly according to claim 9, it is characterized in that: the rearward end of described collet is provided with external screw thread, described assembly also comprises a nut, and this nut has an inner bolt hole so that admit the described externally threaded collet rearward end that is provided with, and described nut is suitable for rotating described collet.
14. a pushing-type collet and a holder assembly that is used to have the workpiece of a front end, it comprises:
(A) pushing-type collet, it comprises an oval cylindrical member, it has a rearward end, one inwardly towards the tapered leading section of its front end, a leading section that vertically passes the hole of described collet and vertically pass described at least collet, be communicated with described hole, described collet leading section be divided into the slot device of the compressible portion of separation;
(B) workpiece that extends forward in hole of inserting described collet and from the compressible portion of described collet leading section, described workpiece has a front end;
(C) seat, it partly is received in described collet wherein, thereby when described collet leading section was born against forcibly in described seat, the compressible portion of described collet was compressed on the described workpiece, workpiece is fixed with respect to described collet, and described seat can be rotated by described collet leading section;
(D) block, it is arranged on described seat preset distance place, the place ahead and is suitable for admitting the workpiece front end, thereby when the workpiece front end is born against described block forcibly, the travelling forward of described stop limits workpiece, described block can be by described workpiece front end rotation;
(E) drive unit, it is used for substantially side by side making workpiece to make the workpiece front end bear against block towards block reach and pressure, and make described collet bear against described seat forcibly towards described the described collet leading section that moves forward and make, thereby make workpiece workpiece is resisted against on the described block before fixing with respect to collet at described collet, and
(F) be used to make the device of described block with respect to described seat withdrawal.
15. assembly according to claim 14, it is characterized in that: the rearward end of described collet is provided with external screw thread, described assembly also comprises a nut, this nut has an inner bolt hole so that admit the described externally threaded collet rearward end that is provided with, described nut by be threaded over described be provided with on the externally threaded collet rearward end and with described drive unit interoperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95196038 CN1162280A (en) | 1994-11-04 | 1995-10-19 | Push type collet and seat assembley |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/334,541 | 1994-11-04 | ||
| CN 95196038 CN1162280A (en) | 1994-11-04 | 1995-10-19 | Push type collet and seat assembley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1162280A true CN1162280A (en) | 1997-10-15 |
Family
ID=5083091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95196038 Pending CN1162280A (en) | 1994-11-04 | 1995-10-19 | Push type collet and seat assembley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101501381B (en) * | 2006-08-09 | 2011-05-04 | 费希尔控制产品国际有限公司 | Actuator levers, collets, and collet removers |
-
1995
- 1995-10-19 CN CN 95196038 patent/CN1162280A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101501381B (en) * | 2006-08-09 | 2011-05-04 | 费希尔控制产品国际有限公司 | Actuator levers, collets, and collet removers |
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