CN208364523U - A kind of angling cylinder with pressure holding function - Google Patents
A kind of angling cylinder with pressure holding function Download PDFInfo
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- CN208364523U CN208364523U CN201821013561.5U CN201821013561U CN208364523U CN 208364523 U CN208364523 U CN 208364523U CN 201821013561 U CN201821013561 U CN 201821013561U CN 208364523 U CN208364523 U CN 208364523U
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- 125000004122 cyclic group Chemical group 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 48
- 239000000446 fuel Substances 0.000 description 17
- 230000008676 import Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a kind of angling cylinder with pressure holding function, belongs to field of mechanical technique.It is poor that it solves the problems, such as that existing angling cylinder does not have pressure holding function, stability.It includes cylinder body and is set to the big piston that in cylinder body and can be moved forward and backward, big piston rear end and inboard wall of cylinder block form oil pocket one, big piston nose and inboard wall of cylinder block form oil pocket two, big piston is equipped with oil duct one and oil duct two, the outlet of oil duct one is connected with oil pocket one, big piston is equipped with location hole, oil duct one is connected to location hole and oil pocket two is connected to oil duct two by location hole, positioning hole is equipped with check-valves and small piston from front to back, check-valves closes along direction from the front to the back and can open check-valves when small piston moves forward, the connectivity part of oil duct one and location hole is located at small piston rear, the connectivity part of oil duct two and location hole is between small piston and check-valves.It has many advantages, such as to can be realized pressure maintaining, guarantees that angling cylinder normal work, stability are good.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of angling cylinder more particularly to a kind of with pressure holding function
Angling cylinder.
Background technique
Existing Lathe Spindle Box generally includes cabinet and angling cylinder, is equipped with hollow piston in angling cylinder, in cabinet
Equipped with main shaft and trombone slide, trombone slide is threaded through in main shaft, and one end of main shaft is equipped with belt pulley, and the other end is equipped with collet/chuck,
The cylinder body connection of angling cylinder is connect with main shaft, and trombone slide one end is protruded into hollow piston and connect with hollow piston, and trombone slide is another
End is connect with collet/chuck, drives trombone slide mobile to realize collet/chuck clamp or release work by hollow piston
Part, while driving collet/chuck and workpiece to rotate by main axis.But all due to the piston of traditional angling cylinder
It is forward type, causes the dismounting between other of angling cylinder and Lathe Spindle Box components inconvenient, such as apply
Number for the hollow angling cylinder of single-piston disclosed in 201220220479.6 and application No. is disclosed in 201120214739.4
A kind of numerically-controlled machine tool processing bar clamp system.
For this purpose, the angling cylinder that present applicant has proposed a kind of for Lathe Spindle Box [application number:
201711077872.8], it includes cylinder body, the peace that cylinder body is equipped with abutting end and is connected for the main shaft with Lathe Spindle Box
End is filled, the piston that can be moved is equipped in cylinder body, piston one end is equipped with the auxiliary section of protrusion, and auxiliary section extends to the abutting end of cylinder body
Outside and it is removably connected with mounting disc in auxiliary section end, the trombone slide of Lathe Spindle Box can sequentially pass through auxiliary section and mounting disc
And it is detachably connected with mounting disc formation.It can by way of setting postposition for piston and with close mounting disc and trombone slide
Dismantling connection and piston are detachably connected, and allow staff in the case where not being related to removing cylinder body and main shaft
Can trombone slide easily removed with piston, improved between angling cylinder and Lathe Spindle Box other components well
Dismounting convenience.
However, the either angling cylinder for being used for the angling cylinder of Lathe Spindle Box or piston forward type, oil circuit
Structure is all fairly simple and does not have pressure holding function again, only by forming cavity one and piston nose between piston rear end and cylinder body
Cavity two is formed between cylinder body, be arranged on angling cylinder at least one oil duct one from fuel feeding to cavity one and at least one
The oil duct two of fuel feeding into cavity two can make piston move forward and unclamp workpiece in the fuel feeding into oil duct one, to oil duct
Piston can be made to move backward and clamp workpiece when fuel feeding in two.But it can be potentially encountered lathe in process and power off suddenly
Or hydraulic station, in the case where interrupt suddenly in Fuel injection system, the oil liquid in oil pocket two will occur because of charge oil pressure deficiency
Reflux, will lead to workpiece in this way can not effectively keep clamping even directly to fall off, to influence the following process of workpiece
Precision.
Summary of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to propose a kind of returning with pressure holding function
Turn oil cylinder, the technical problem to be solved is that how while realizing pressure holding function guarantee angling cylinder normal work.
The purpose of this utility model can be realized by the following technical scheme:
A kind of angling cylinder with pressure holding function including cylinder body and is set to the big work that in cylinder body and can be moved forward and backward
Plug, the big piston rear end and inboard wall of cylinder block form oil pocket one, and big piston nose and inboard wall of cylinder block form oil pocket two, big piston
It is equipped with oil duct one and oil duct two, the outlet of oil duct one is connected with oil pocket one, which is characterized in that the big piston is equipped with
Location hole, oil duct one is connected to location hole and oil pocket two is connected to oil duct two by location hole, and positioning hole is equipped with from front to back
Check-valves and the small piston that can be moved forward and backward, check-valves is closed along direction from the front to the back and the energy when small piston moves forward
Enough to open check-valves, the connectivity part of oil duct one and location hole is located at small piston rear, the connectivity part position of oil duct two and location hole
Between small piston and check-valves.
This angling cylinder with pressure holding function is mainly used in Lathe Spindle Box, after cylinder body is mounted on main shaft by when use
End, the trombone slide rear end being threaded through in main shaft are protruded into cylinder body and are connected with big piston, and such cylinder body is fixed, and passes through big piston
Be moved forward and backward to drive collet/chuck of front-end of spindle to open forward or tense backward, to realize the release of workpiece
Or it clamps.It under normal circumstances, is in oil when continuing oil condition, such as clamping workpiece in order to guarantee the stability of work
Not fuel feeding in road one continues fuel feeding in oil duct two, and check-valves is closed along direction from the front to the back, oil pocket two and oil duct two-way
Location hole connection and the connectivity part of oil duct two and location hole are crossed between small piston and check-valves, therefore the oil liquid in oil duct two
Positioning hole can be entered and acted on by the oil pressure in oil duct two and open check-valves, make big piston full of oil liquid in oil pocket two
It is always positioned at the rear portion of inner chamber of cylinder block；When needing to unclamp workpiece, the fuel feeding in oil duct two is cut off, and is persistently supplied into oil duct one
The connectivity part of oil, oil duct one and location hole is located at small piston rear, and a part of oil liquid in such oil duct one will enter positioning
In hole and small piston is pushed to move forward, small piston moves forward and is kept open check-valves, so that in oil pocket two
Oil liquid can carry out draining, while to push big piston to move forward in another part oil liquid injection oil pocket one in oil duct one.
When encountering the case where failure of oil feed or lathe have a power failure under Workpiece clamping state, check-valves can be because of oil duct two
Interior oil pressure becomes smaller and is in close state, and the access between oil pocket two and oil duct two will be separated, so in fuel feeding
The oil liquid being had been positioned in oil pocket two before interruption just will not release, that is to say, that the oil pressure in oil pocket two will not become smaller, that is, play
Pressure holding function avoids the occurrence of the following process precision for loosening and influencing workpiece so that workpiece be made to be able to maintain clamped condition.
Meanwhile in oil duct one when oil inlet, it can use oil liquid in oil duct one and small piston pushed again to open check-valves with will be oily
Oil liquid in chamber two is laid down, thus make this angling cylinder will not because of pressure holding function setting and influence the normal shifting of big piston
It is dynamic.
In the above-mentioned angling cylinder with pressure holding function, the location hole is arranged along the moving direction of big piston, institute
The location hole hole wall stated is equipped with connecting hole, and connecting hole is connected to oil duct two, and the connecting hole is located at small piston and check-valves
Between.
Connecting hole is set on the hole wall of location hole, and connecting hole is connected to oil duct two and connecting hole is located at small piston and non-return
Between valve, it will be shunted in this way to the both ends of location hole when the oil liquid in oil duct two enters positioning hole through connecting hole, backward
The oil liquid of flowing will push small piston and move backward, while the oil liquid of flow forward can open check-valves to be injected into oil pocket two
It is interior, pressure maintaining is carried out in the case where failure of oil feed to make this angling cylinder not only and can use check-valves, but also can hold
Oil liquid is able to carry out in the case where continuous fuel feeding to be normally filled with or release.
In the above-mentioned angling cylinder with pressure holding function, the big piston is cylindrical, and the oil duct two goes out
The port of mouth and connecting hole is staggered along the lateral wall of big piston, and the big piston lateral wall is equipped with annular groove, described
The outlet of oil duct two and the port of connecting hole are respectively positioned on annular groove.
Since big piston nose and inboard wall of cylinder block form oil pocket two, it is normal for should directly set the outlet of oil duct two
It sets on the front end face of big piston.But in this angling cylinder, because to be realized using check-valves in failure of oil feed
Pressure holding function, while the oil liquid in oil duct two want can simultaneously by small piston to pusher and open check-valves, cause oil duct
Two outlet cannot be arranged on the front end face of big piston, can only be arranged at the port of the outlet of oil duct two and connecting hole greatly
On the lateral wall of piston.Therefore the outlet of oil duct two and the port of connecting hole are staggered along the lateral wall of big piston, simultaneously
In big piston lateral wall setting annular groove and it is arranged at the outlet of oil duct two and the port of connecting hole on annular groove, thus
The oil liquid of oil duct two can be allow smoothly to flow into connecting hole by annular groove, so that making this angling cylinder both can use only
It returns valve and carries out pressure maintaining in the case where failure of oil feed, while oil liquid can be made to be able to carry out normally in the case where lasting fuel feeding again
Ground is filled with or releases.
In the above-mentioned angling cylinder with pressure holding function, two annular seal grooves, two rings are equipped on the outside of the big piston
Sealing ring is equipped in shape seal groove, annular groove is between two annular seal grooves.
It, can due to the oil liquid in oil duct two could be introduced into positioning hole by the annular groove on the outside of big piston
Can there is a problem of oil liquid in from the slot leakage between big piston and cylinder body to oil pocket one or oil pocket two, therefore in big piston
Outside be arranged two annular seal grooves, in two annular seal grooves be arranged sealing ring and make annular groove be located at two annular seal grooves it
Between, can thus it make this angling cylinder while having pressure holding function, and do not interfere with the normal work of angling cylinder.
In the above-mentioned angling cylinder with pressure holding function, the check-valves include be fixed on the valve body of positioning hole with
And it is set to the intracorporal spring of valve and steel ball, valve body is in the tubular and steel ball of both ends open by valve body under the elastic force effect of spring
Rear port closing, the small piston is cylindrical, small piston front end be equipped with tip and tip it is opposite with steel ball.
The non-return structure of check-valves is formed using steel ball and spring, and is set to the opposite point of steel ball in small piston front end
Head, the oil liquid in oil duct one when oil inlet in oil duct one push small piston to move forward, and the tip of small piston front end will be by steel
Pearl opens forward and keeps check-valves in the open state, so that can go on smoothly pressure release in oil pocket two；In oil duct two
Oil liquid when oil inlet in oil duct two pushes small piston backward, while the oil liquid in oil duct two heads on steel ball and opens forward and make to stop
It returns valve to open, so that oil liquid can smoothly enter into oil pocket two to push big piston to move backward.When in Workpiece clamping shape
When the case where encountering failure of oil feed or lathe power failure under state, steel ball can be under the effect of the elastic force of spring automatically by the rear end of valve body
Mouth is closed and separates the access of oil duct two and oil pocket two, so that the oil pressure in oil pocket two is able to maintain constant, i.e., automatic progress
Pressure maintaining loosens to avoid workpiece because of oil pressure deficiency.
In the above-mentioned angling cylinder with pressure holding function, as another technical solution, the check-valves includes solid
It is scheduled on the valve body of positioning hole and is set to the intracorporal seal head of valve and spring, valve body is in the tubular and seal head of both ends open
The rear port of valve body is closed under the elastic force effect of spring, the small piston is cylindrical, and the rear end of seal head is equipped with convex
Connecting rod out, interlinking lever end extend to outside valve rear end mouth.
The non-return structure of check-valves is formed using seal head and spring, and after the setting of the rear end of seal head extends to valve body
Connecting rod outside port, the oil liquid in oil duct one when oil inlet in oil duct one push small piston to move forward, small piston front end and company
Seal head will be opened forward after leaning and keep check-valves in the open state by bar, so that can be smooth in oil pocket two
Carry out pressure release；Oil liquid in oil duct two when oil inlet in oil duct two pushes small piston backward, while the oil liquid top in oil duct two
Seal head open forward and open check-valves so that oil liquid can smoothly enter into oil pocket two with push big piston to
After move.When encountering the case where failure of oil feed or lathe have a power failure under Workpiece clamping state, seal head can be in the bullet of spring
The rear port closing of valve body is separated the access of oil duct two and oil pocket two automatically under power effect, so that the oil pressure in oil pocket two
Be able to maintain it is constant, i.e., automatically carry out pressure maintaining, to avoid workpiece because oil pressure deficiency due to loosen.
In the above-mentioned angling cylinder with pressure holding function, shape between the big piston rear end face and big piston lateral wall
The outlet of circlewise step, oil duct one is located on circular step and the perpendicular wall in big piston rear end face, the location hole bottom
Portion is equipped with connecting pore, connecting pore and one lateral communication of oil duct.
Circular step is set between big piston rear end face and big piston lateral wall, and the import of oil duct one is located at circular step
With big piston rear end face on perpendicular wall, and connecting pore, connecting pore and one lateral communication of oil duct are set in location hole bottom, this
The oil liquid that sample one comes in oil duct one, which can be both filled in oil pocket one, pushes big piston to move forward；While the oil liquid in oil duct one is again
Positioning hole can be entered to push small piston to be moved forward to open on check-valves, so that the oil liquid in oil pocket two is able to carry out
Draining avoids the normal movement that angling cylinder is influenced because realizing pressure holding function.
In the above-mentioned angling cylinder with pressure holding function, the cylinder body includes cylindrical body and the company of front opening
It is connected to the end cap of cylindrical body front end, cyclic annular guide part is equipped on the outside of the rear end of end cap, the big piston nose is equipped with recess,
Cyclic annular guide part is located in recess and is equipped with guidance tape, the oil pocket two between cyclic annular guide part lateral wall and recess inner sidewall
Including the cavity one that is formed between big piston nose face, end cap rear end face and cyclic annular guide part lateral wall and each inner wall of recess with
The cavity two formed between cyclic annular guide part rear end face, the location hole are connected to cavity one, and are set on cyclic annular guide part
There is the oil-through hole for being connected to cavity one with cavity two.
Concentricity when can guarantee that big piston is mobile by the setting of recess, cyclic annular guide part and guidance tape, but by
Oil pocket two is caused to be divided by between piston nose face, end cap rear end face and cyclic annular guide part lateral wall in the setting of guidance tape
The cavity two formed between each inner wall of cavity one and recess of formation and cyclic annular guide part rear end face, location hole and cavity two connect
Logical, the sectional area that will lead to oil pocket two if only allowing the oil in oil duct two to be filled in cavity one is insufficient, therefore is oriented in ring-type
The oil-through hole that cavity one is connected to cavity two is set in portion, may also pass through after entering the oil liquid in oil duct two in cavity one
Oilhole is injected into cavity two, to guarantee that oil pocket two can have enough sectional areas to guarantee oil pressure abundance.
Compared with prior art, this angling cylinder with pressure holding function is by being arranged location hole and in location hole on big piston
Interior setting small piston and check-valves, when encountering the case where failure of oil feed or lathe have a power failure under Workpiece clamping state, non-return
Valve can be because the oil pressure in oil duct two becomes smaller and is in close state, and the access between oil pocket two and oil duct two will be separated,
So that the oil pressure in oil pocket two will not become smaller, that is, pressure holding function is played, so that workpiece be made to be able to maintain clamped condition, is avoided out
Now loosen and influence the following process precision of workpiece.
Meanwhile in oil duct one when oil inlet, can use oil liquid in oil duct one push small piston by check-valves open with
Oil liquid in oil pocket two is laid down, to guarantee that big piston can be normally carried out movement while realizing pressure holding function.
Detailed description of the invention
Fig. 1 is the cross-sectional view of this angling cylinder with pressure holding function.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
Fig. 3 is cross-sectional view when big piston moves backward in this angling cylinder with pressure holding function.
Fig. 4 is cross-sectional view when big piston moves forward in this angling cylinder with pressure holding function.
Fig. 5 is cross-sectional view when positioning hole is not provided with check-valves in this angling cylinder with pressure maintaining function.
In figure, 1, cylinder body；1a, cylindrical body；1b, end cap；1b1, cyclic annular guide part；1b11, oil-through hole；2, big piston；
2a, oil duct one；2b, oil duct two；2c, location hole；2d, annular groove；2e, connecting hole；2f, annular seal groove；2g, connecting pore；2h,
Circular step；2i, auxiliary section；2j, recess；3, oil pocket one；4, oil pocket two；5, small piston；5a, tip；6, check-valves；6a, valve
Body；6b, steel ball；6c, spring；7, sealing ring；8, oil return housing；9, guidance tape.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As shown in Figure 1 and Figure 5, a kind of angling cylinder with pressure holding function, including cylinder body 1 and be set in cylinder body 1 and
The big piston 2 that can be moved forward and backward, big 2 rear end of piston and 1 inner wall of cylinder body form oil pocket 1, piston nose and 1 inner wall shape of cylinder body
At oil pocket 24.Big piston 2 is equipped with one 2a of oil duct and two 2b of oil duct, and the outlet of one 2a of oil duct is connected to oil pocket 1, oil duct two
The outlet of 2b is connected to oil pocket 24.
As shown in Figure 1, big 2 rear end face of piston is equipped with the auxiliary section 2i of protrusion, auxiliary section 2i extends to the rear end of cylinder body 1
Outside, the import of one 2a of oil duct and the import of two 2b of oil duct are respectively positioned on the auxiliary section 2i periphery wall extended to outside 1 rear end of cylinder body, and
Auxiliary section 2i extends to the part outside 1 rear end of cylinder body equipped with oil return housing 8, and the import of one 2a of oil duct and the import of two 2b of oil duct are equal
In oil return housing 8.
As shown in Figure 1, Figure 2 and shown in Fig. 5, big piston 2 is equipped with location hole 2c, is equipped with small piston from back to front in location hole 2c
5 and can control the check-valves 6 that oil pocket 24 is connected to or separates with two 2b of oil duct, small piston 5 can be moved forward and backward, check-valves 6 along by
Preceding rearwardly direction closes and can open check-valves 6 when small piston 5 moves forward.One 2a of oil duct is connected to location hole 2c,
Two 2b of oil duct is connected to oil pocket 24 by location hole 2c, after the connectivity part of one 2a of oil duct and location hole 2c are located at small piston 5
Side, the connectivity part of oil duct two 2b and location hole 2c are between small piston 5 and check-valves 6, the oil duct one when one 2a oil inlet of oil duct
Oil liquid in 2a can push small piston 5 to move forward to open check-valves 6；Oil liquid when two 2b oil inlet of oil duct in two 2b of oil duct
Small piston 5 can be pushed to move backward, while the oil liquid in two 2b of oil duct can open check-valves 6.
As shown in Fig. 2, specifically, big piston 2 is cylindrical, location hole 2c is set on the front end face of big piston 2, fixed
Position hole 2c is arranged along the moving direction of big piston 2, and circular step 2h is formed between 2 lateral wall of big 2 rear end face of piston and big piston,
On the outlet circular step 2h and the perpendicular wall of big 2 rear end face of piston of one 2a of oil duct, location hole 2c's is equipped with connecting pore 2g,
Connecting pore 2g and one 2a lateral communication of oil duct.
As shown in Figure 1, Figure 2 and shown in Fig. 5, the hole wall of location hole 2c connects equipped with connecting hole 2e, connecting hole 2e and two 2b of oil duct
Logical, connecting hole 2e is between small piston 5 and check-valves 6.The outlet of two 2b of oil duct and the port of connecting hole 2e are along big piston 2
Lateral wall be staggered, big 2 lateral wall of piston is equipped with annular groove 2d, the equal position in port of the outlet of two 2b of oil duct and connecting hole 2e
In on annular groove 2d.It is equipped in two annular seal groove 2f, two annular seal groove 2f on the outside of big piston 2 and is equipped with sealing ring 7, annular
Slot 2d is between two ring type seals 7.
In the present embodiment, cylinder body 1 includes the cylindrical body 1a of front opening and is connected to the front end cylindrical body 1a
Cyclic annular guide part 1b1 is equipped on the outside of the rear end of end cap 1b, end cap 1b, big 2 front end of piston is equipped with recess 2j, cyclic annular guide part 1b1
Guidance tape 9 is equipped in recess 2j and between cyclic annular guide part 1b1 lateral wall and recess 2j inner sidewall, oil pocket 24 includes big
In the cavity one and recess 2j formed between 2 front end face of piston, end cap 1b rear end face and cyclic annular guide part 1b1 lateral wall is each
The cavity two formed between wall and cyclic annular guide part 1b1 rear end face, location hole 2c are connected to cavity one, and in cyclic annular guide part
1b1 is equipped with the oil-through hole 1b11 for being connected to cavity one with cavity two.
As shown in Fig. 2, check-valves 6 includes the valve body 6a being fixed in location hole 2c and the spring being set in valve body 6a
6c and steel ball 6b, valve body 6a are in the tubular and steel ball 6b of both ends open by the rear port of valve body 6a under the elastic force effect of spring 6c
Closing, small piston 5 is cylindrical, and 5 front end of small piston is equipped with tip 5a, and tip 5a is opposite with steel ball 6b.
This angling cylinder with pressure holding function is mainly used in Lathe Spindle Box, and cylinder body 1 is mounted on main shaft when use
Rear end, the trombone slide rear end being threaded through in main shaft protrudes into cylinder body 1 and is connected with big piston 2, such cylinder body 1 be it is fixed,
Drive trombone slide to be moved forward and backward by the back-and-forth motion of big piston 2, thus make the spring 6c collet of front-end of spindle open forward or
Tense backward, wherein the specific connection type of cylinder body 1 and main shaft and big piston 2 and trombone slide can refer to application No. is
201711077872.8 a kind of disclosed angling cylinder for Lathe Spindle Box.
Under normal circumstances, in order to guarantee the stability of work, one 2a of oil duct or two 2b of oil duct are in continuing oil condition
, and one 2a of oil duct and two 2b of oil duct only one be in oil condition, will not at the same fuel feeding.As shown in figure 3, for example clamping work
When part, not fuel feeding in one 2a of oil duct is to continue fuel feeding in two 2b of oil duct, and the oil liquid in two 2b of oil duct passes through annular groove 2d and company
It meets hole 2e to enter in location hole 2c, and the steel ball 6b on check-valves 6 is opened forward under the effect of the oil pressure of oil liquid and makes non-return
Valve 6, which is in, continues opening state, so that two 2b of oil duct is constantly in connected state with oil pocket 24 and makes to fill always in oil pocket 24
Full oil liquid, piston 2 big so are just constantly in the rearmost part of 1 inner cavity of cylinder body, then the trombone slide being connected with big piston 2 is just always
The state for pulling back spring 6c collet is kept, workpiece is just constantly in clamped state.
When encountering the case where failure of oil feed or lathe have a power failure in the state of Workpiece clamping, check-valves 6 can be because of oil
Oil pressure in two 2b of road becomes smaller and is re-closing off, and the access between two 2b of oil pocket 24 and oil duct will be separated, so
The oil liquid being had been positioned in oil pocket 24 before failure of oil feed just will not be released, that is to say, that the oil pressure in oil pocket 24 will not become
It is small, then the function of pressure maintaining is just played, to make workpiece that can still protect in the case where failure of oil feed or lathe have a power failure
Clamped condition is held, workpiece is avoided and the following process precision for loosening and influencing workpiece occurs.
As shown in figure 4, needing to be initially switched off the fuel feeding in two 2b of oil duct when needing to unclamp workpiece, then to one 2a of oil duct
It is interior to continue fuel feeding.When fuel feeding cutting in two 2b of oil duct, check-valves 6 can be re-closing off, it is normal for oil liquid in oil pocket 24 be
Draining can not be carried out, but in this case influences whether the normal movement of big piston 2 again.Therefore, this angling cylinder is in location hole
The bottom 2c setting connecting pore 2g to be connected to one 2a of oil duct, in this way when having oil liquid to enter in one 2a of oil duct, in one 2a of oil duct
A part of oil liquid can be entered in location hole 2c by connecting pore 2g and small piston 5 is pushed to move forward, the point of 5 front end of small piston
Steel ball 6b on check-valves 6 can be opened forward and is again turned on check-valves 6 by head 5a, and the oil liquid in such oil pocket 24 can
To be normally carried out draining, then another part oil liquid in one 2a of oil duct is filled into oil pocket 1, with the oil in oil pocket 1
Buckling is big, and the oil pressure in oil pocket 24 becomes smaller, and big piston 2 can normally be moved forward to unclamp workpiece.
In addition, this angling cylinder with pressure holding function is by oil duct and realizes that the structure of pressure holding function is all disposed within big piston 2
On, big piston 2 is the structure of monoblock type and big piston 2 is located in cylinder body 1, therefore when in use will not also be outside cylinder body 1
There is permeability phenomenon in side.It is in split type structure since big piston 2 being mounted in cylinder body 1 and makes cylinder body 1 necessarily, because
If this in cylinder body 1, then inevitably occurs oil duct and the structure setting for realizing pressure holding function at 1 fission of cylinder body
In addition the structure for preventing permeability is arranged in permeability or needs at 1 fission of cylinder body.
Embodiment two
The present embodiment is essentially identical with the structure and principle of embodiment one, the difference is that: in the present embodiment, non-return
Valve 6 includes the valve body 6a being fixed in location hole 2c and the seal head being set in valve body 6a and spring 6c, valve body 6a are in two
The tubular and seal head of end opening close the rear port of valve body 6a under the elastic force effect of spring 6c, and small piston 5 is cylindrical,
The rear end of seal head is equipped with the connecting rod of protrusion, and interlinking lever end extends to outside valve body 6a rear port.
The non-return structure of check-valves 6 is formed using seal head and spring 6c, and setting extends to valve in the rear end of seal head
Connecting rod outside body 6a rear port, the oil liquid in one 2a of oil duct when oil inlet in one 2a of oil duct push small piston 5 to move forward, small work
Filling in after 5 front ends lean with connecting rod will open seal head forward and keep check-valves 6 in the open state, so that oil pocket
Pressure release can be gone on smoothly in 24；Oil liquid in two 2b of oil duct when oil inlet in two 2b of oil duct pushes small piston 5 backward, together
When oil duct two 2b in oil liquid head on seal head and open forward and open check-valves 6 so that oil liquid can smoothly enter into
To push big piston 2 to move backward in oil pocket 24.When the feelings for encountering failure of oil feed or lathe power failure under Workpiece clamping state
When condition, seal head can be under the effect of the elastic force of spring 6c automatically by the closing of the rear port of valve body 6a and by two 2b of oil duct and oil pocket two
4 access partition so that the oil pressure in oil pocket 24 be able to maintain it is constant, i.e., automatically carry out pressure maintaining, to avoid workpiece because of oil pressure not
It loosens enough.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (8)
1. a kind of angling cylinder with pressure holding function, including cylinder body (1) and it is set in cylinder body (1) and can be moved forward and backward
Big piston (2), big piston (2) rear end and cylinder body (1) inner wall form oil pocket one (3), big piston (2) front end and cylinder body
(1) inner wall forms oil pocket two (4), and big piston (2) is equipped with oil duct one (2a) and oil duct two (2b), the outlet of oil duct one (2a) with
Oil pocket one (3) is connected, which is characterized in that the big piston (2) is equipped with location hole (2c), oil duct one (2a) and location hole
(2c) connection and oil pocket two (4) pass through location hole (2c) with oil duct two (2b) and are connected to, and are equipped with from front to back only in location hole (2c)
Return valve (6) and the small piston (5) that can be moved forward and backward, check-valves (6) closed along direction from the front to the back and when small piston (5) to
Check-valves (6) can be opened when preceding mobile, the connectivity part of oil duct one (2a) and location hole (2c) are located at small piston (5) rear,
The connectivity part of oil duct two (2b) and location hole (2c) is located between small piston (5) and check-valves (6).
2. the angling cylinder according to claim 1 with pressure holding function, which is characterized in that the location hole (2c) is along big
The moving direction of piston (2) is arranged, and the location hole (2c) hole wall is equipped with connecting hole (2e), connecting hole (2e) and oil duct two
(2b) connection, the connecting hole (2e) are located between small piston (5) and check-valves (6).
3. the angling cylinder according to claim 2 with pressure holding function, which is characterized in that the big piston (2) is in circle
Column, the outlet of the oil duct two (2b) is staggered with the port of connecting hole (2e) along the lateral wall of big piston (2), described
Big piston (2) lateral wall be equipped with annular groove (2d), the equal position in port of the outlet of the oil duct two (2b) and connecting hole (2e)
In on annular groove (2d).
4. the angling cylinder according to claim 3 with pressure holding function, which is characterized in that on the outside of the big piston (2)
It equipped with two annular seal grooves (2f), is equipped with sealing ring (7) in two annular seal grooves (2f), it is close that annular groove (2d) is located at two annulars
Between sealing groove (2f).
5. the angling cylinder according to claim 1 or 2 or 3 or 4 with pressure holding function, which is characterized in that the non-return
Valve (6) includes the valve body (6a) being fixed in location hole (2c) and the spring (6c) and steel ball that are set in valve body (6a)
(6b), valve body (6a) is in the tubular and steel ball (6b) of both ends open by the rear end of valve body (6a) under the elastic force effect of spring (6c)
Mouth closing, the small piston (5) is cylindrical, and small piston (5) front end is equipped with tip (5a) and tip (5a) and steel ball (6b)
Relatively.
6. the angling cylinder according to claim 1 or 2 or 3 or 4 with pressure holding function, which is characterized in that the non-return
Valve (6) includes the valve body (6a) being fixed in location hole (2c) and the seal head being set in valve body (6a) and spring (6c),
Valve body (6a) closes the rear port of valve body (6a) under the elastic force effect of spring (6c) in the tubular and seal head of both ends open,
The small piston (5) is cylindrical, and the rear end of seal head is equipped with the connecting rod of protrusion, and interlinking lever end extends to valve body (6a) rear port
Outside.
7. the angling cylinder according to claim 2 with pressure holding function, which is characterized in that described big piston (2) rear end
Circular step (2h) is formed between face and big piston (2) lateral wall, the outlet of oil duct one (2a) is located at circular step (2h) and big
On the perpendicular wall of piston (2) rear end face, the location hole bottom (2c) is equipped with connecting pore (2g), connecting pore (2g) and oil duct
One (2a) lateral communication.
8. the angling cylinder according to claim 1 with pressure holding function, which is characterized in that before the cylinder body (1) includes
The rear end outside of the cylindrical body (1a) of end opening and the end cap (1b) for being connected to the front end cylindrical body (1a), end cap (1b) is set
Have cyclic annular guide part (1b1), big piston (2) front end is equipped with recess (2j), and cyclic annular guide part (1b1) is located at recess (2j)
Guidance tape (9) are equipped between interior and cyclic annular guide part (1b1) lateral wall and recess (2j) inner sidewall, oil pocket two (4) packet
Include the cavity one formed between big piston (2) front end face, end cap (1b) rear end face and cyclic annular guide part (1b1) lateral wall and recessed
The cavity two formed between each inner wall of mouth (2j) and cyclic annular guide part (1b1) rear end face, the location hole (2c) and cavity one
Connection, and the oil-through hole (1b11) for being connected to cavity one with cavity two is equipped on cyclic annular guide part (1b1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013561.5U CN208364523U (en) | 2018-06-28 | 2018-06-28 | A kind of angling cylinder with pressure holding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013561.5U CN208364523U (en) | 2018-06-28 | 2018-06-28 | A kind of angling cylinder with pressure holding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364523U true CN208364523U (en) | 2019-01-11 |
Family
ID=64927471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821013561.5U Withdrawn - After Issue CN208364523U (en) | 2018-06-28 | 2018-06-28 | A kind of angling cylinder with pressure holding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533569A (en) * | 2018-06-28 | 2018-09-14 | 玉环广越机械有限公司 | A kind of angling cylinder with pressure holding function |
-
2018
- 2018-06-28 CN CN201821013561.5U patent/CN208364523U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533569A (en) * | 2018-06-28 | 2018-09-14 | 玉环广越机械有限公司 | A kind of angling cylinder with pressure holding function |
| CN108533569B (en) * | 2018-06-28 | 2023-11-14 | 玉环广越机械有限公司 | Rotary oil cylinder with pressure maintaining function |
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Granted publication date: 20190111 Effective date of abandoning: 20231114 |