CN1291811C

CN1291811C - Oil-pressure clamping head

Info

Publication number: CN1291811C
Application number: CN 03146598
Authority: CN
Inventors: 吴炫隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-08
Filing date: 2003-07-08
Publication date: 2006-12-27
Anticipated expiration: 2023-07-08
Also published as: CN1565784A

Abstract

The present invention relates to an oil pressure clamping head. In order to provide a clamping tool which can lower the temperature in operation, drive off pressure oil in gaps, and improve processing performance, the present invention discloses. The present invention comprises a body, a shaft seat, a rotating shaft unit and a collet chuck unit, wherein the body is provided with a through hole, an oil feeding hole, an oil returning hole and a transfer port communicated to the through hole, and cold air is input from the transfer port; the shaft seat is provided with an outer ring surface, an inner ring surface, an inner ring groove, a first guide hole, a second guide hole and an oil collecting hole, wherein the outer ring surface encircles a shaft line; the inner ring surface defines shaft holes; the first guide hole and the second guide hole penetrate from the outer ring surface and the inner ring surface to the inner ring groove, and are corresponding to the transfer port and the oil feeding hole; the oil collecting hole penetrates from the outer ring surface to the inner ring surface, and is corresponding to the oil returning hole; the rotating shaft unit is provided with a rotating part, a driving wheel, a brake seat and an elastic part, wherein the brake seat is sheathed in the rotating part in a sliding mode along the shaft line under the action of pressure oil; the elastic part is sheathed between the rotating part and the brake seat, and causes the brake seat to move towards a position which is opposite to the moving position of the brake seat under the action of pressure oil; the rotating part is provided with an accommodating chamber which accommodates a brake part and a plurality of drainage holes which communicate between the inner ring groove and the accommodating chamber.

Description

Oil-pressure clamping head

Technical field

The invention belongs to clamping tool, particularly a kind of Oil-pressure clamping head.

Background technology

Axle bed 2, the turning cylinder that the Oil-pressure clamping head of the toolroom machine of commonly using as shown in Figure 1, comprises body 1, be installed in body 1 inside is located at the rotating shaft unit 3 of axle bed 2 inside and is sheathed on rotating shaft unit 3 inner and can produce the collet chuck unit 4 of bundle folder or pine oil to workpiece.

Body 1 has perforation 101, the oil filler point 102 of injection pressure oil and the backflash 103 of pressure recovery oil that is provided with along axis.

Axle bed 2 has corresponding to first oil guiding hole 201 of oil filler point 102 and second oil guiding hole 202.

Rotating shaft unit 3 has can be relative to the tumbler 301 that axle bed 2 rotates, the driving wheel 302 that driving tumbler 301 rotates and the stopper seat 303 that produces displacement in tumbler 301 along axis.

Tumbler 301 has and is arranged with in outer ring surface and corresponding to the annular groove 304 of oil guiding hole 201, is located at side end and room 305 that can ccontaining stopper seat 303, is communicated to first oil duct 306 of room 305 and is communicated to second oil duct 307 of room 305 by second oil guiding hole 202 by annular groove 304.First and second oil duct 306,307 is arranged at the both sides of stopper seat 303 respectively, and stopper seat 303 can separate room 305 become the front side portion 305 ' that communicates with first oil duct 306 to reach the rear lateral portion 305 that communicates with second oil duct 307 ".

Collet chuck unit 4 have the slide 401 that is subjected to stopper seat 303 interlocks and driven by slide 401 radially produce tighten, the collet chuck 402 of pine oil.

When pressure oil injects from oil filler point 102, and flow through in regular turn first oil guiding hole 201, first oil duct 306 and when entering the front side portion 305 ' of room 305, can promote stopper seat 303 toward moving to left, and collet chuck 402 is moved with respect to slide 401, and being produced, 402 pairs of workpiece of collet chuck tighten, simultaneously, originally squeeze the moving rear lateral portion 305 that is present in " pressure oil be back in the backflash 103 along second oil duct 307.

When pressure oil is imported from second oil guiding hole 202, and second oil duct 307 of flowing through, and the rear lateral portion 305 that enters room 305 " time; just can promote stopper seat 303 displacement of turning right; and collet chuck 402 is outwards moved with respect to slide 401; loosen and 402 pairs of workpiece of collet chuck are produced, replace the workpiece purpose to reach.

Though, this Oil-pressure clamping head can reach the application target of expection, but it drives collet chuck 402 and tightens, loosen and all utilize pressure oil as drive source, and pressure oil can be along between body 1 and the axle bed 2, slit seepage flow between axle bed 2 and the rotating shaft unit 3 and in the slit, form oil film, though between body 1 and axle bed 2, all be provided with the oil-collecting conduit between axle bed 2 and the rotating shaft unit 3, but when rotating unit 3 runs up with respect to axle bed 2 generations, the oil film that is present in the slit can generate heat, moreover, oil film also can cause retardance because of the high pressure that pressure source is bestowed, thus, can influence processing characteristics.

Summary of the invention

The purpose of this invention is to provide and a kind ofly reduce temperature in the running, expel pressure oil in the slit, improve the Oil-pressure clamping head of processing characteristics.

The present invention includes body, be installed in body interior axle bed, be located in the rotating shaft unit of axle bed inside and be sheathed on rotating shaft unit inner and can produce the collet chuck unit of bundle folder or pine oil to workpiece; Body has along the perforation of axis setting, injection pressure oil and connects oil filler point, the pressure recovery oil to perforation and connect to the spill port of perforation and input cold air and connect transfer port to perforation; Axle bed is sheathed in the perforation of body, axle bed have outer ring surface around axis, with the opposing setting of outer ring surface and can define axis hole inner ring surface, be located on inner ring surface inner groove, be through to inner groove and corresponding to first guide hole of transfer port, be through to inner groove and corresponding to second guide hole of oil filler point, be through to inner ring surface and corresponding to the oil collecting hole of spill port by outer ring surface by outer ring surface by outer ring surface; Rotating shaft unit has with respect to the axle bed turning cylinder to be located at tumbler in the axis hole, to drive driving wheel that tumbler rotates, be located at the stopper seat in the tumbler and be sheathed on the elastic component that stopper seat opposite direction of moving direction under the pressure oil effect is moved along axis at pressure oil effect lower edge axis slip cap; Tumbler has the room of ccontaining brake and counts the conduction hole that is communicated between inner groove and the room.

Wherein:

The collet chuck unit have be connected in first on tumbler bundle part, be connected on the stopper seat and the opposite second bundle part that is provided with the first bundle part, be sheathed on the first bundle part inner and can be for the first sheathed collet chuck of workpiece, to be sheathed on the second bundle part inner and can supply the second sheathed collet chuck of workpiece and be embedded in moving part between first and second collet chuck; First and second bundle part has respectively and is pushing and drawing shape and can produces the bundle folder hole of tightening to first and second collet chuck.

The collet chuck unit has the bundle spare that is connected on the tumbler, be sheathed on the bundle part inner and can for the sheathed collet chuck of workpiece and be connected in collet chuck and the stopper seat between moving part; The bundle part has and is pushing and drawing shape and can produces the bundle folder hole tighten to collet chuck.

Be equiped with check (non-return) valve in the body transfer port.

Owing to the present invention includes body, axle bed, rotating shaft unit and collet chuck unit; Body has perforation, oil filler point, spill port and input cold air and connects transfer port to perforation; Axle bed have the outer ring surface around axis, the inner ring surface that defines axis hole, inner groove, by outside, inner ring surface is through to inner groove and corresponding to first and second guide hole of transfer port and oil filler point, be through to inner ring surface and corresponding to the oil collecting hole of spill port by outer ring surface; Rotating shaft unit has tumbler, driving wheel, is located at the stopper seat in the tumbler and is sheathed on the elastic component that stopper seat opposite direction of moving direction under the pressure oil effect is moved at pressure oil effect lower edge axis slip cap; Tumbler has the room of ccontaining brake and counts the conduction hole that is communicated between inner groove and the room.When desiring pine oil or replacing workpiece, starting pressure oil is imported in oil filler point, and pressure oil enters room and the stopper seat is pushed away stopper and does, and make elastic component be confined state and contain back the elastic force of releasing, and drive the action of collet chuck unit when making the stopper seat mobile and be the pine oil state, to be convenient to take out, replace workpiece; When closing presure oil, utilize the elastic force effect of elastic component to make the stopper seat towards producing displacement in the other direction, make the unit action of folder tube be the state of tightening; When starting the rotation of driving wheel drive tumbler, can start pneumatic supply, and cold air is imported from transfer port, and through the guiding of first guide hole and can flee between axle bed and the rotating shaft unit, thus, the rotating shaft unit that is turning round just can be subjected to the effect of air and produce cool effect.And more feasible oil film, the fluid that was present in originally in axle cooperation place, hole and the oil storage tank can be blown and is back in oil collecting hole and the spill port, not only can make pressure oil reach the recovery purpose, and can reduce the oil film thickness of axle cooperation place, hole, so that Oil-pressure clamping head keeps preferable processing characteristics.Not only reduce temperature in the running, expel pressure oil in the slit, and improve processing characteristics, thereby reach purpose of the present invention.

Description of drawings

Fig. 1, Oil-pressure clamping head structural representation cutaway view for commonly using.

Fig. 2, be the embodiment of the invention one structural representation front view.

Fig. 3, be A-A cutaway view among Fig. 2.

Fig. 4, be B-B cutaway view among Fig. 2.

Fig. 5, be C-C cutaway view among Fig. 2.

Fig. 6, be the embodiment of the invention two structural representation cutaway views.

The specific embodiment

Embodiment one

As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the present invention can produce running by simultaneously two-way clamping two workpiece, to reach two-way processing purpose, it comprises body 10, is installed in the axle bed 20 of body 10 inside, is located in the rotating shaft unit 30 of axle bed 20 inside and is sheathed on rotating shaft unit 30 inside and can produce workpiece the collet chuck unit 40 of bundle folder or pine oil.

Body 10 has perforation 11 along the axis setting, input cold air and connects transfer port 12, the injection pressure oil to perforation 11 and connect oil filler point 13, the pressure recovery oil to perforation 11 and connect to the spill port 14 of perforation 11 and be installed in check (non-return) valve 15 in the transfer port 12.In being arranged at transfer port 12 check (non-return) valve 15 allow cold airs by outside in the unidirectional inwardly input transfer port 12, and can prevent that pressure oil from flowing out.

Axle bed 20 is to be located in the perforation 11 of body 10 by turning set, its have outer ring surface 21 around axis, with outer ring surface 21 opposing settings and can define axis hole 221 inner ring surface 22, be located on the inner groove 23 of inner ring surface 22, as shown in Figure 4 by outer ring surface 21 be through to inner groove 23 and corresponding to first guide hole 24 of transfer port 12, as shown in Figure 3 by outer ring surface 21 be through to inner groove 23 and corresponding to second guide hole 25 of oil filler point 13, as shown in Figure 5 be through to inner ring surface 22 and corresponding to the oil collecting hole 26 of spill port 14 by outer ring surface 21.

Inner ring surface 22 is concaved with several oil storage tanks 222.

Rotating shaft unit 30 have with respect to axle bed 20 turning cylinders be located at tumbler 31 in the axis hole 221, drive driving wheel 32 that tumbler 31 rotates, along the axis slip cap be located at stopper seat 33 in the tumbler 31, along axis be sheathed on elastic component 34 between tumbler 31 and the stopper seat 32, be sheathed on the collar 35 and two between tumbler 31 and the axle bed 20 be divided into the collar 35 both sides and be sheathed on tumbler 31 and axle bed 20 between bearing 36.

Tumbler 31 have be adjacent to driving wheel 32 and can ccontaining brake 33 and room 311, the number of elastic component 34 be communicated in the conduction hole 312 between inner groove 23 and the room 311.

Stopper seat 33 has driving fit and is sheathed on the piston portion 331 that the oil that is stressed in the room 311 drives the generation displacement along axis towards (right side) first direction I of stopper seat 33 integral body.

The elastic force of elastic component 34 then makes stopper seat 33 do the time spent towards (left side) second direction II displacement at the oil that is not stressed.

The collar 35 has the oil duct 351 that turns between inner groove 23 and the conduction hole 312.

Collet chuck unit 40 is sheathed on tumbler 31 inside, and have be bolted in first on tumbler 31 1 side ends bundles part 41, be connected on the stopper seat 33 and with the first bundle part, the 41 opposite second bundle parts 42 that are provided with, be sheathed on the first bundle part 41 inner and can be for the first sheathed collet chuck 43 of workpiece, to be sheathed on the second bundle part 42 inner and can supply the second sheathed collet chuck 44 of workpiece and be embedded in moving part 45 between first and second collet chuck 43,44.First and second bundle part 41,42 has respectively and is pushing and drawing shape and can produces the bundle folder hole 411,421 of tightening to first and second collet chuck 43,44.Be equipped with glade plane space 451,452 between moving part 45 and first and second collet chuck 43,44.

As shown in Figure 3, when desiring pine oil or replacing workpiece, starting pressure oil is imported in oil filler point 13, and pressure oil second guide hole 25 of flowing through in regular turn, oil duct 351, conduction hole 312, finally enter room 311 and the piston portion 331 of stopper seat 33 is pushed away stopper and do, and make elastic component 34 be confined state and contain back the elastic force of releasing, and make stopper seat 33 when (right side) first direction I moves, can drive the second bundle part 42 so that second collet chuck 44 is the pine oil state immediately, and after making the second bundle part 42 utilize glade plane space 452 to omit micrometric displacement, pass moving part 45, first collet chuck 43 just can make the collet chuck 43 of winning shift out in the first bundle part 41.Therefore, first and second collet chuck 43,44 all can be pine oil, to be convenient to take out, replace workpiece.And under this state, pressure oil not only can be along above-mentioned path flow, in the slit that more can infiltrate between inner ring surface 22 and the collar 35 outer peripheral faces, bearing 36 hole axles cooperates,, but utilize the setting of check (non-return) valve 15 can prevent that pressure oil from flowing out from transfer port 12 even can infiltrate in the transfer port 12.

As Fig. 4, shown in Figure 5,, utilize the elastic force effect of elastic component 34 to make stopper seat 33 produce displacement, and first and second collet chuck 43,44 is tightened gradually towards (left side) second direction II when closing presure oil.When starting 31 rotations of driving wheel 32 drive tumblers, can start pneumatic supply, and make cold air pass through check (non-return) valve 15 and from transfer port 12 input, and through the guiding of first guide hole 24 and can flee between the axle bed 20 and the collar 35, bearing 36 inside, thus, the rotating shaft unit 30 that is turning round just can be subjected to the effect of air and produce cool effect.And more feasible oil film, the fluid that was present in originally in axle cooperation place, hole and the oil storage tank 222 can be blown and is back in oil collecting hole 26 and the spill port 14, not only can make pressure oil reach the recovery purpose, and can reduce the oil film thickness of axle cooperation place, hole, so that Oil-pressure clamping head keeps preferable processing characteristics.

Embodiment two

As shown in Figure 6, the present invention is applicable to unidirectional holding workpiece running, and it comprises body 10 ', axle bed 20 ', rotating shaft unit 30 ' and collet chuck unit 40 '.

Collet chuck unit 40 ' has the bundle spare 41 ' that is connected on the tumbler 31 ', be sheathed on bundle part 41 ' inner and can for the sheathed collet chuck 42 ' of workpiece and be connected in collet chuck 42 ' and stopper seat 33 ' between moving part 43 '.

Bundle part 41 ' has and is pushing and drawing shape and can produces the bundle folder hole 411 ' of tightening to collet chuck 42 '.Whereby, stopper seat 33 ' the oil effect of being stressed also can drive moving part 43 ', collet chuck 42 ', shifts out in the part 41 ' and collet chuck 42 ' is restrainted certainly, to reach the pine oil purpose.

Conclude above-mentioned, Oil-pressure clamping head of the present invention is to utilize the drive source of pressure oil as the stripping workpiece, and running the time utilizes cold air countershaft unit to lower the temperature again and expels the fluid that is present in axle cooperation place, hole, the slit, can guarantee processing characteristics, so can reach the purpose of invention really.

Claims

1, a kind of Oil-pressure clamping head, it comprises body, is installed in the axle bed of body interior, is located in the rotating shaft unit of axle bed inside and is sheathed on rotating shaft unit inside and can produce workpiece the collet chuck unit of bundle folder or pine oil; Body has along the perforation of axis setting, injection pressure oil and connects to the oil filler point of perforation and pressure recovery oil and connect spill port to perforation; Axle bed is sheathed in the perforation of body, and it has first guide hole and corresponding to second guide hole of oil filler point; Rotating shaft unit has with respect to the axle bed turning cylinder to be located at tumbler in the axis hole, to drive driving wheel that tumbler rotates and to be located at stopper seat in the tumbler at pressure oil effect lower edge axis slip cap; Tumbler has the room of ccontaining brake; It is characterized in that described body has the input cold air and connects transfer port to perforation; Axle bed have outer ring surface around axis, with the opposing setting of outer ring surface and can define axis hole inner ring surface, be located on the inner groove of inner ring surface and be through to inner ring surface and corresponding to the oil collecting hole of spill port by outer ring surface; First and second guide hole of axle bed is through to inner groove by outer ring surface, and first guide hole is corresponding to transfer port; Have sheathed and be placed in the elastic component that stopper seat opposite direction of moving direction under the pressure oil effect is moved between rotating shaft unit tumbler and the stopper seat along axis; Tumbler has counts the conduction hole that is communicated between inner groove and the room.

2, Oil-pressure clamping head according to claim 1, it is characterized in that described collet chuck unit have be connected in first on tumbler bundle part, be connected on the stopper seat and the opposite second bundle part that is provided with the first bundle part, be sheathed on the first bundle part inner and can be for the first sheathed collet chuck of workpiece, to be sheathed on the second bundle part inner and can supply the second sheathed collet chuck of workpiece and be embedded in moving part between first and second collet chuck; First and second bundle part has respectively and is pushing and drawing shape and can produces the bundle folder hole of tightening to first and second collet chuck.

3, Oil-pressure clamping head according to claim 1, it is characterized in that described collet chuck unit have the bundle spare that is connected on the tumbler, be sheathed on the bundle part inner and can for the sheathed collet chuck of workpiece and be connected in collet chuck and the stopper seat between moving part; The bundle part has and is pushing and drawing shape and can produces the bundle folder hole tighten to collet chuck.

4, Oil-pressure clamping head according to claim 1 is characterized in that being equiped with check (non-return) valve in the described body transfer port.