CN102198596B

CN102198596B - Oil pressure chuck

Info

Publication number: CN102198596B
Application number: CN 201010129676
Authority: CN
Inventors: 吴炫隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-23
Filing date: 2010-03-23
Publication date: 2013-02-06
Anticipated expiration: 2030-03-23
Also published as: CN102198596A

Abstract

The invention relates to an oil pressure chuck, comprising a base, a fixed seat, an oil pressure cylinder, an inner positioning unit, a bearing unit, a connecting seat, a first oil path control unit, a second oil path control unit, a brake seat, a front shaft cover and a front barrel clamp, wherein the fixed seat, the oil pressure cylinder, the inner positioning unit, the bearing unit, the connecting seat, the first oil path control unit, the second oil path control unit, the brake seat and the front shaft cover are respectively arranged in the base; the first oil path control unit and the second oil path control unit are respectively arranged in two containing grooves which are arranged on the fixed seat along the radial direction and respectively comprise an outer barrel and a check valve. Since the rotating centrifugal force of the oil pressure chuck when in rotation can lead the blocking effect of blocking balls of the check valve to be better, so that in the oil pressure chuck, pressure retention can be achieved in the processing process, and a workpiece can be tightly and surely clamped so as to improve the processing quality.

Description

Oil-pressure clamping head

Technical field

The present invention relates to a kind of machine tool collet, particularly relate to a kind of Oil-pressure clamping head.

Background technology

As shown in Figure 1, 2, the Oil-pressure clamping head 10 of No. 91119043 patent of invention case of TaiWan, China that the applicant is all, has a support 11, and be installed in respectively a holder 12 in this support 11, sleeve 13, oil passage control valve seat 15, two bearings 16, rotation seat 17, stopper seat 18, pull bar 19, front shaft-cup 20, shaft-cup 21, a front collet chuck 22 after one, and collet chuck 23 after.

This support 11 has an axial accommodating hole 111 and a gathering room 112.

This holder 12 is installed in this accommodating hole 111 interior close front ends, has an axial through bore 121, and one that is disposed radially respectively enters oilhole 122 and a spill port 123, and the oil-collecting channel 124 that oil can be imported this gathering room 112.

This sleeve 13 is installed in the axial through bore 121 of this holder 12, and what have that 135, one of axial through bore are communicated with that this enters oilhole 122 radially enters oil groove 133, and one goes out oil groove 134.

Between this sleeve 13 and this holder 12 and form an annular space 14.

This oil passage control valve seat 15 is installed in this axial through bore 135, having corresponding this enters oil groove 133 and goes out the grease chamber 151 of oil groove 134 with this, one enters fuel tap door 152, a spring 153 that is positioned at this grease chamber 151, and one pushed away by these spring 153 bullets and seal the block spheroid 154 that this enters fuel tap door 152 under normality.

Described bearing 16 is installed in this axial through bore 121 and lays respectively at the front and back ends of this oil passage control valve seat 15.

This rotation seat 17 is set between the described bearing 16 vertically, has an oil duct 171 that relatively enters oilhole 122, and one section preceding thread section 172.

This stopper seat 18 is installed in this rotation seat 17 and near the rear end, has one section rear thread section 181.

This pull bar 19 is installed in this rotation seat 17 and this stopper seat 18.

Shaft-cup 20 screw locks are in the preceding thread section 172 of this rotation seat 17 before being somebody's turn to do.

Shaft-cup 21 screw locks are in the rear thread section 181 of this stopper seat 18 after being somebody's turn to do.

Collet chuck 22 is installed in to collude in this front shaft-cup 20 and with this pull bar 19 and puts binding before being somebody's turn to do.

Collet chuck 23 is installed in to collude in this rear shaft-cup 21 and with this pull bar 19 and puts binding after being somebody's turn to do.

Although this Oil-pressure clamping head 10 has can be by this front collet chuck 22, collet chuck 23 sandwiched workpiece are processed after this function, but still has following improvement place for the treatment of:

One, installs vertically because of the block spheroid 154 of this oil passage control valve seat 15, this block spheroid 154 very easily seals position generation oil impregnate because rotary centrifugal force breaks away from when this Oil-pressure clamping head 10 high speed rotating, cause process can't pressurize, certain clamping work pieces, affect processing quality.

Two, the annular space 14 between this sleeve 13 and this holder 12 is too little, is about

And this sleeve 13 is radially installed with this holder 12, and during high speed rotating, this sleeve 13 very easily produces sintering with this holder 12, causes fault rate higher.

Summary of the invention

The object of the present invention is to provide a kind of workpiece that can pressurize make really to be clamped to promote processing quality, but and the Oil-pressure clamping head of reduce trouble.

Oil-pressure clamping head of the present invention, comprise a support, and be installed in respectively this support interior a holder, an oil hydraulic cylinder, an interior positioning unit, a bearing unit, a Connection Block, first oil path control unit, second oil path control unit, a stopper seat, a front shaft-cup, and front collet chuck.

This support comprises an accommodating hole around an axis.

This holder is installed in this accommodating hole, comprise one around the axis hole of this axis, self-retaining seat front end face is towards the front bulge loop of front end moulding, first oilhole that arranges towards this axis hole from a holder outer ring surface respectively, second oilhole, the 3rd oilhole, the 4th oilhole, first oil duct that is communicated with this first oilhole and this front end face, second oil duct that is communicated with this second oilhole and this front end face, the 3rd oil duct that is communicated with the 3rd oilhole and is somebody's turn to do an outer ring surface of front bulge loop, and the 4th oil duct that is communicated with the 4th oilhole and is somebody's turn to do the outer ring surface of front bulge loop.

This oil hydraulic cylinder is nested with outside the front bulge loop of this holder, comprises the 5th oil duct of corresponding the 3rd oil duct, and the 6th oil duct of corresponding the 4th oil duct.

Should in positioning unit comprise first inner cap, this first inner cap is nested with outside this oil hydraulic cylinder and the front end face of this holder of butt, has corresponding this first oil duct and is communicated with the 7th oil duct of this oil hydraulic cylinder.

This bearing unit comprises at least one bearing in the axis hole that is installed in this holder.

This Connection Block comprises a rear sleeve that is set in this bearing unit, the front end court of a sleeve after being somebody's turn to do is the adapter ring of outward moulding radially, one from the front year ring of this adapter ring towards the front end moulding, be disposed radially respectively first storage tank and second storage tank of before this, carrying ring, one is communicated with this first storage tank and is somebody's turn to do front the 8th oil duct that carries the front end face of ring, run through this adapter ring and be communicated with at least one the 9th oil duct of this first storage tank along this axis respectively, the 5th oil duct of corresponding this oil hydraulic cylinder is arranged at this adapter ring and is communicated with the tenth oil duct of this second storage tank, and one radially runs through the intercommunicating pore that carries ring and be communicated with this second storage tank before this.

This first oil path control unit is installed in this first storage tank, comprise a urceolus, and check valve that is installed in this urceolus, this urceolus has at least one axial through bore of the 9th oil duct of corresponding this Connection Block, and this check valve has an interior perforation that is communicated with this first storage tank and the 8th oil duct.

This second oil path control unit is installed in this second storage tank, comprise a urceolus, and interior check valve of urceolus that is installed in this second oil path control unit, the urceolus of this second oil path control unit has the axial through bore of the tenth oil duct of corresponding this Connection Block, and the check valve of this second oil path control unit has an interior perforation that is communicated with this second storage tank and this intercommunicating pore.

This stopper seat is installed in this Connection Block, comprise that one is set in the rear sleeve of this Connection Block and the rear sleeve in the adapter ring, one from the rear barrel forward end of this stopper seat towards outward moulding radially and carry the driving ring of ring before being positioned at this, reach one from the front lock ring of this driving ring towards the front end moulding.

Should before shaft-cup with should before lock ring lock knot, comprise that one runs through towards the rear end and the interior folder hole in convergent aperture from front end along this axis.

Should be installed in the interior folder hole of this front shaft-cup by front collet chuck.

Oil-pressure clamping head of the present invention, the check valve of this first oil path control unit has an inner core, run through this inner core and be communicated with should interiorly boring a hole of this first storage tank and the 8th oil duct, an elastic component that is installed in this inner core, and block bead that is subjected to this elastic component bullet to push away the oiler that seals under normal conditions this inner core, the check valve of this second oil path control unit has an inner core, run through the inner core of this second oil path control unit and be communicated with should interiorly boring a hole of this second storage tank and this intercommunicating pore, elastic component in inner core that is installed in this second oil path control unit, and elastic component bullet that is subjected to this second oil path control unit pushes away and seals under normal conditions the block bead of oiler of the inner core of this second oil path control unit.

Oil-pressure clamping head of the present invention, positioning unit also comprises second inner cap in this, is installed in the front bulge loop front side of this bearing unit and this holder.

Oil-pressure clamping head of the present invention, this Oil-pressure clamping head also comprise a pull bar, are installed in the rear sleeve of the rear sleeve of this stopper seat and this Connection Block, and collude with this front collet chuck and to put combination; Shaft-cup after one with the rear sleeve lock knot of this Connection Block, has one and runs through and the interior folder hole in convergent aperture towards front end from the rear end along this axis, and collet chuck after, is installed in to collude in the interior folder hole of shaft-cup after this and with this pull bar to put combination.

Oil-pressure clamping head of the present invention, this Oil-pressure clamping head also comprise a drive end bearing bracket, and the front end face of this support of butt, an and rear end cap is nested with the rear sleeve of this Connection Block outside the also rear end face of this support of butt.

Beneficial effect of the present invention is: because described check valve is radially to install, so rotary centrifugal force can make described check valve block bead to seal effect better, make the present invention can permanently protect oil pressure in process, make workpiece really be clamped to promote processing quality.

Description of drawings

Fig. 1 is the assembled sectional view of No. 91119043 patent of invention case of TaiWan, China " Oil-pressure clamping head ";

Fig. 2 is the enlarged drawing that picks up from A section among Fig. 1;

Fig. 3 is the rearview of Oil-pressure clamping head one preferred embodiment of the present invention;

Fig. 4 is along the obtained cutaway view of line IV-IV among Fig. 3;

Fig. 5 is the partial sectional view of preferred embodiment of the present invention, and the state that oil pressure injects from first oilhole is described;

Fig. 6 is similar to Fig. 5, and the state that oil pressure injects from second oilhole is described;

Fig. 7 is another cutaway view of preferred embodiment of the present invention;

Fig. 8 is the partial sectional view of preferred embodiment of the present invention, and the state that oil pressure injects from the 3rd oilhole is described;

Fig. 9 is similar to Fig. 8, and the state that oil pressure injects from the 4th oilhole is described.

Among Fig. 3 to Fig. 9: 3. Oil-pressure clamping head; 30. support; 31. front end face; 32. rear end face; 33. accommodating hole; 40. holder; 401. axis hole; 402. front end face; 403. outer ring surface; 41. front bulge loop; 411. outer ring surface; 42. the first oilhole; 43. the second oilhole; 44. the 3rd oilhole; 45. the 4th oilhole; 46. the first oil duct; 47. the second oil duct; 48. the 3rd oil duct; 49. the 4th oil duct; 50. oil hydraulic cylinder; 501. inner ring surface; 51. the 5th oil duct; 52. the 6th oil duct; 60. interior positioning unit; 61. the first inner cap; 611. the 7th oil duct; 62. the second inner cap; 70. bearing unit; 71. fore bearing; 72. rear bearing; 80. Connection Block; 81. rear sleeve; 82. adapter ring; 83. front year ring; 84. the first storage tank; 85. the second storage tank; 86. the 8th oil duct; 87. the 9th oil duct; 88. the tenth oil duct; 89. intercommunicating pore; 90. the first oil path control unit; 91. urceolus; 911. axial through bore; 912. outward opening; 92. check valve; 921. inner core; 922. interior perforation; 923. elastic component; 924. block bead; 925. oiler; 93. cock body; 95. the second oil path control unit; 96. urceolus; 961. axial through bore; 962. outward opening; 97. check valve; 971. inner core; 972. interior perforation; 973. elastic component; 974. block bead; 975. oiler; 98. cock body; 100. stopper seat; 101. rear sleeve; 102. driving ring; 103. front lock ring; 110. driving member; 120. pull bar; 130. front shaft-cup; 131. front bulge loop; 132. interior folder hole; 140. rear shaft-cup; 141. rear bulge loop; 142. interior folder hole; 150. front collet chuck; 160. rear collet chuck; 170. drive end bearing bracket; 180. rear end cap; I. axis.

The specific embodiment

The present invention is described in detail below in conjunction with drawings and Examples.

Shown in Fig. 3,4, Oil-pressure clamping head 3 preferred embodiments of the present invention comprise a support 30, and be installed in respectively a holder 40 in this support 30, oil hydraulic cylinder 50, interior positioning unit 60, bearing unit 70, Connection Block 80, first oil path control unit 90, second oil path control unit 95, stopper seat 100, driving member 110, pull bar 120, front shaft-cup 130, collet chuck 160, a drive end bearing bracket 170 behind the shaft-cup 140 after, front collet chuck 150, one, and rear end cap 180.

This support 30 has an accommodating hole 33 that centers on an axis I and be communicated with a front end face 31 and a rear end face 32.

Such as Fig. 4,5,6, shown in 7, this holder 40 is installed in this accommodating hole 33 and the rear end face 32 of close support 30, comprise one around the axis hole 401 of this axis I, self-retaining seat front end face 402 is towards the front bulge loop 41 of front end moulding, self-retaining seat outer ring surface 403 is towards first oilhole 42 of these axis hole 401 settings respectively, second oilhole 43, the 3rd oilhole 44, the 4th oilhole 45, first oil duct 46 that is communicated with this first oilhole 42 and this holder front end face 402, second oil duct 47 that is communicated with this second oilhole 43 and this front end face 402, L shaped the 3rd oil duct 48 that is communicated with the 3rd oilhole 44 and is somebody's turn to do the outer ring surface 411 of front bulge loop 41, and L shaped the 4th oil duct 49 that is communicated with the 4th oilhole 45 and this outer ring surface 411.

This oil hydraulic cylinder 50 is and can be nested with movably outside the front bulge loop 41 of this holder 40 along this axis I, comprise L shaped the 5th oil duct 51 that corresponding the 3rd oil duct 48 arranges towards front end from inner ring surface 501, and L shaped the 6th oil duct 52 that arranges towards front end from the inner ring surface 501 of oil hydraulic cylinder 50 of corresponding the 4th oil duct 49.

Should comprise first inner cap 61 and second inner cap 62 by interior positioning unit 60.This first inner cap 61 is nested with outside this oil hydraulic cylinder 50 and the front end face 402 of this holder 40 of butt, has L shaped the 7th oil duct 611 that corresponding this first oil duct 46 arranges towards inner ring surface from rear end face.

This bearing unit 70 comprises a fore bearing 71 and a rear bearing 72, is installed in respectively the axis hole 401 interior and spaces of this holder 40.

This second inner cap 62 is installed in front bulge loop 41 front sides of this fore bearing 71 and this holder 40.

This Connection Block 80 comprises a rear sleeve 81 that is set in this fore bearing 71 and this rear bearing 72, the front end court of a sleeve 81 after being somebody's turn to do is the adapter ring 82 of outward moulding radially, one from the front year ring 83 of this adapter ring 82 towards the front end moulding, be disposed radially respectively and before this, carry first storage tank 84 and second storage tank 85 that ring 83 is the blind hole shape, one is communicated with this first storage tank 84 and is somebody's turn to do front the 8th oil duct 86 that carries the front end face of ring 83, run through this adapter ring 82 and be communicated with two the 9th oil ducts 87 of this first storage tank 84 along this axis I respectively, the 5th oil duct 51 of corresponding this oil hydraulic cylinder 50 is arranged at this adapter ring 82 and is communicated with the tenth oil duct 88 of this second storage tank 85, and one radially runs through the intercommunicating pore 89 that carries ring 83 and be communicated with this second storage tank 85 before this.

This first oil path control unit 90 is installed in this first storage tank 84, comprises a urceolus 91, a check valve 92, and a cock body 93.

This urceolus 91 has two axial through bore 911 of two the 9th oil ducts 87 of corresponding this Connection Block 80, and an outward opening 912.

This check valve 92 has an inner core 921, an interior perforation 922 that runs through this inner core 921 and be communicated with this first storage tank 84 and the 8th oil duct 86, an elastic component 923 that is installed in this inner core 921, and a block bead 924 that is subjected to these elastic component 923 bullets to push away and seal under normal conditions the oiler 925 of this inner core 921.

The outward opening 912 of this cock body 93 in order to seal this urceolus 91.

This second oil path control unit 95 is installed in this second storage tank 85, comprises a urceolus 96, a check valve 97, and a cock body 98.

This urceolus 96 has axial through bore 961 and the outward opening 962 of the tenth oil duct 88 of corresponding this Connection Block 80.

This check valve 97 has an inner core 971, an interior perforation 972 that runs through this inner core 971 and be communicated with this second storage tank 85 and this intercommunicating pore 89, an elastic component 973 that is installed in this inner core 971, and a block bead 974 that is subjected to these elastic component 973 bullets to push away and seal under normal conditions the oiler 975 of this inner core 971.

The outward opening 962 of this cock body 98 in order to seal this urceolus 96.

This stopper seat 100 is and can be installed in movably in this Connection Block 80 along this axis I, comprise that one is set in the rear sleeve 81 of this Connection Block 80 and the rear sleeve 101 in the adapter ring 82, one from should after sleeve 101 front ends towards outward moulding radially and carry the driving ring 102 of ring 83 before being positioned at this, reach one from the front lock ring 103 of this driving ring 102 towards the front end moulding.

This driving member 110 is installed in this front lock ring 103 and should frontly carries outside the ring 83.

In the rear sleeve 101 that this pull bar 120 is installed in this stopper seat 100 and the rear sleeve 81 of this Connection Block 80.

Should before shaft-cup 130 be installed in this front lock ring 103 and by front bulge loop 131 with should before lock ring 103 lock knots, have one and run through towards the rear end and the interior folder hole 132 in convergent aperture from front end along this axis I.

Should after shaft-cup 140 be installed in the rear sleeve 81 of this Connection Block 80 and by rear bulge loop 141 with should after sleeve 81 lock knots, have one and run through and the interior folder hole 142 in convergent aperture towards front end from the rear end along this axis I.

Should before collet chuck 150 be installed in to collude in the interior folder hole 132 of this front shaft-cup 130 and with this pull bar 120 and put binding.

Should after collet chuck 160 be installed in to collude in the interior folder hole 142 of shaft-cup 140 after this and with this pull bar 120 and put binding.

This drive end bearing bracket 170 is nested with outside this driving member 110 and the front end face 31 of this support 30 of butt.

This rear end cap 180 is nested with outside the rear sleeve 81 of this Connection Block 80 and the rear end face 32 of this support 30 of butt.

During use, such as Fig. 7, shown in 8, when three oilhole 44 of oil pressure from this holder 40 injects, then oil pressure can sequentially flow into the 3rd oil duct 48, the 5th oil duct 51 of this oil hydraulic cylinder 50, the 9th oil duct 87 of this Connection Block 80, the axial through bore 911 of the urceolus 91 of this first oil path control unit 90, then the block bead 924 of the check valve 92 of this first oil path control unit 90 is pushed open and broken away from this oiler 925, oil pressure can be entered in this check valve 92 via this oiler 925 flow into the 8th oil duct 86 via perforation in this 922 again, and then the driving ring 102 that promotes this stopper seat 100 make this stopper seat 100 drive should before shaft-cup 130 move towards the rear end, at this moment, this front collet chuck 150 opens and can unclasp the workpiece (not shown), again by these pull bar 120 interlocks should after collet chuck 160, collet chuck 160 is also opened and can unclasp the workpiece (not shown).

Such as Fig. 7, shown in 9, when four oilhole 45 of oil pressure from this holder 40 injects, then oil pressure can sequentially flow into the 4th oil duct 49, the 6th oil duct 52 of this oil hydraulic cylinder 50, the tenth oil duct 88 of this Connection Block 80, the axial through bore 961 of the urceolus 96 of this second oil path control unit 95, then the block bead 974 of the check valve 97 of this second oil path control unit 95 is pushed open and broken away from this oiler 975, oil pressure is entered in this check valve 97 flow into this intercommunicating pore 89 via perforation in this 972 again, and then the driving ring 102 that promotes this stopper seat 100 make this stopper seat 100 drive should before shaft-cup 130 move towards front end, at this moment, but should bring together and the clamping work pieces (not shown) by front collet chuck 150, collet chuck 160 after being somebody's turn to do by these pull bar 120 interlocks again, but collet chuck 160 is also brought together and the clamping work pieces (not shown) after making this.

Such as Fig. 4, shown in 5, after workpiece is clamped, oil pressure is injected from this first oilhole 42, then oil pressure can sequentially flow into this first oil duct 46, the 7th oil duct 611 of this first inner cap 61, and then drive this oil hydraulic cylinder 50 and move towards the rear end, this oil hydraulic cylinder 50 separates with this Connection Block 80 simultaneously, under this state, oil pressure can not sent into this first oil path control unit 90, the block bead 924 of this check valve 92 is pushed away by these elastic component 923 bullets and seals this oiler 925, at this moment, just can keep oil pressure and make this front collet chuck 150 with should after collet chuck 160 clamping work pieces, then just can process operation to this workpiece.

Shown in Fig. 4,6, when oil pressure is injected from this second oilhole 43, then oil pressure can sequentially flow into this second oil duct 47, and then drive this oil hydraulic cylinder 50 and move towards front end, this oil hydraulic cylinder 50 is touched with this Connection Block 80, then, as shown in Figure 7, oil pressure can be injected from the 3rd oilhole 44 or the 4th oilhole 45, to unclasp workpiece operation or to carry out the clamping work pieces operation.

Conclude above-mentionedly, Oil-pressure clamping head of the present invention has effect as described below and advantage, so really can reach goal of the invention:

One, because of described check valve 92, the 97th, along the radially installation vertical with this axis I, so rotary centrifugal force can make on the contrary described

check valve

92,97 block bead 924,974 to seal effect better, the present invention is had permanently to protect oil pressure, make workpiece permanent clamped to promote effect and the advantage of processing quality in process.

Two, because in process, this oil hydraulic cylinder 50 separates with this Connection Block 80, and add the two and be along this axis I and install, thus can not collide friction each other during high speed rotating, can reduce trouble.

Claims

1. an Oil-pressure clamping head is characterized in that,

This Oil-pressure clamping head comprises:

A support comprises an accommodating hole around an axis;

A holder, be installed in this accommodating hole, comprise one around the axis hole of this axis, self-retaining seat front end face is towards the front bulge loop of front end moulding, self-retaining seat outer ring surface is towards first oilhole of this axis hole setting respectively, second oilhole, the 3rd oilhole, the 4th oilhole, first oil duct that is communicated with this first oilhole and this front end face, second oil duct that is communicated with this second oilhole and this front end face, the 3rd oil duct that is communicated with the 3rd oilhole and is somebody's turn to do an outer ring surface of front bulge loop, and the 4th oil duct that is communicated with the 4th oilhole and is somebody's turn to do the outer ring surface of front bulge loop;

An oil hydraulic cylinder is nested with outside the front bulge loop of this holder, comprises the 5th oil duct of corresponding the 3rd oil duct, and the 6th oil duct of corresponding the 4th oil duct;

An interior positioning unit comprises first inner cap, and this first inner cap is nested with outside this oil hydraulic cylinder and the front end face of this holder of butt, has corresponding this first oil duct and is communicated with the 7th oil duct of this oil hydraulic cylinder;

A bearing unit comprises at least one bearing in the axis hole that is installed in this holder;

A Connection Block, comprise a rear sleeve that is set in this bearing unit, the front end court of a sleeve after being somebody's turn to do is the adapter ring of outward moulding radially, one from the front year ring of this adapter ring towards the front end moulding, be disposed radially respectively first storage tank and second storage tank of before this, carrying ring, one is communicated with this first storage tank and is somebody's turn to do front the 8th oil duct that carries the front end face of ring, run through this adapter ring and be communicated with at least one the 9th oil duct of this first storage tank along this axis respectively, the 5th oil duct of corresponding this oil hydraulic cylinder is arranged at this adapter ring and is communicated with the tenth oil duct of this second storage tank, and one radially runs through the intercommunicating pore that carries ring and be communicated with this second storage tank before this;

First oil path control unit, be installed in this first storage tank, comprise a urceolus, and check valve that is installed in this urceolus, this urceolus has at least one axial through bore of the 9th oil duct of corresponding this Connection Block, and this check valve has an interior perforation that is communicated with this first storage tank and the 8th oil duct;

Second oil path control unit, be installed in this second storage tank, comprise a urceolus, and interior check valve of urceolus that is installed in this second oil path control unit, the urceolus of this second oil path control unit has the axial through bore of the tenth oil duct of corresponding this Connection Block, and the check valve of this second oil path control unit has an interior perforation that is communicated with this second storage tank and this intercommunicating pore;

A stopper seat, be installed in this Connection Block, comprise that one is set in the rear sleeve of this Connection Block and the rear sleeve in the adapter ring, one from the rear barrel forward end of this stopper seat towards outward moulding radially and carry the driving ring of ring before being positioned at this, reach one from the front lock ring of this driving ring towards the front end moulding;

A front shaft-cup with this front lock ring lock knot, comprises that one runs through towards the rear end and the interior folder hole in convergent aperture from front end along this axis; And

A front collet chuck is installed in the interior folder hole of this front shaft-cup.

2. Oil-pressure clamping head according to claim 1 is characterized in that,

The check valve of described the first oil path control unit has an inner core, run through this inner core and be communicated with should interiorly boring a hole of this first storage tank and the 8th oil duct, an elastic component that is installed in this inner core, and a block bead that is subjected to this elastic component bullet to push away an oiler that seals under normal conditions this inner core;

The check valve of described the second oil path control unit has an inner core, run through the inner core of this second oil path control unit and be communicated with should interiorly boring a hole of this second storage tank and this intercommunicating pore, elastic component in inner core that is installed in this second oil path control unit, and elastic component bullet that is subjected to this second oil path control unit pushes away and seals under normal conditions the block bead of an oiler of the inner core of this second oil path control unit.

3. Oil-pressure clamping head according to claim 1 is characterized in that,

Described interior positioning unit also comprises second inner cap, is installed in the front bulge loop front side of this bearing unit and this holder.

4. Oil-pressure clamping head according to claim 1 is characterized in that,

Described Oil-pressure clamping head also comprises:

A pull bar is installed in the rear sleeve of the rear sleeve of this stopper seat and this Connection Block, and colludes with this front collet chuck and to put combination;

Shaft-cup after one with the rear sleeve lock knot of this Connection Block, has one and runs through and the interior folder hole in convergent aperture towards front end from the rear end along this axis; And

Collet chuck after one is installed in to collude in the interior folder hole of shaft-cup after this and with this pull bar and puts combination.

5. Oil-pressure clamping head according to claim 4 is characterized in that,

Described Oil-pressure clamping head also comprises:

A drive end bearing bracket, the front end face of this support of butt; And

A rear end cap is nested with outside the rear sleeve of this Connection Block and the rear end face of this support of butt.