CN101927365A - Fluid pressure type feed speed control device - Google Patents
Fluid pressure type feed speed control device Download PDFInfo
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- CN101927365A CN101927365A CN 201010205180 CN201010205180A CN101927365A CN 101927365 A CN101927365 A CN 101927365A CN 201010205180 CN201010205180 CN 201010205180 CN 201010205180 A CN201010205180 A CN 201010205180A CN 101927365 A CN101927365 A CN 101927365A
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- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
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Abstract
Problem of the present invention is to provide the fluid pressure type feed speed control device of adjustment that can carry out the feed speed of two grades of dead slow speed feedings etc. with a unit.Fluid pressure type feed speed control device (B) has: main body (1); Can be configured in the interior piston rod (5) of main body (1) movably along fore-and-aft direction; In be located at the cylinder (2) of main body (1); Pushing piston bar (5) thus with the piston (4) of piston rod (5) as one reciprocating action; The fluid pressure chamber of fluid storage (12); The storeroom of fluid storage (14); The mobile feed speed governor motion (C) of adjusting the translational speed of piston (4) by the control fluid; And the stream (13) that is communicated with feed speed governor motion (C) and storeroom (14).Feed speed governor motion (C) has the first throttle valve (10) and second choke valve (11) of adjustment mobile flow from fluid pressure chamber (12) towards stream (13).
Description
Technical field
The present invention relates to fluid pressure type feed speed control device, this fluid pressure type feed speed control device is for example controlled the feed speed of lathe with the reciprocating mass that moves back and forth as the drill bit of the rig that carries out perforate (drill unit).
Background technology
In the past, in rig, known have the following fluid pressure type feed speed control device feed control device of machining cell (automatically): this control device can be adjusted by the flow to oil, set the feed speed of cylinder etc. for from low speed to high speed feed speed arbitrarily, this cylinder makes traveller (ram) reciprocating action (for example with reference to patent documentation 1,2) of moving integratedly with drill bit.
Fig. 8 is the figure that is illustrated in the fluid pressure type feed speed control device that uses in the existing rig, (a) is the cutaway view that the state when piston rod is positioned at going-back position is shown, and (b) is the cutaway view that the state when piston rod is positioned at progressive position is shown.
Shown in Fig. 8 (a) and (b), this existing fluid pressure type feed speed control device 100 constitutes to have with lower member: cylinder 300, be located at the main body 200 of fluid pressure type feed speed control device 100 in this cylinder 300; Piston 400, reciprocating action in the cylinder chamber 310 of this piston 400 in the cylinder 300 that is formed at tubular; Piston rod 410, this piston rod 410 moves integratedly with this piston 400; Choke valve 700, this choke valve 700 are used for the oil in the cylinder chamber 310 that is released by piston 400 is adjusted via the flow that oil circuit 500 flows into accumulator 600; Rotary spool 800, this rotary spool 800 forms this choke valve 700; And knob (knob) 900, this knob 900 is used for rotary spool 800 is carried out rotating operation.
For fluid pressure type feed speed control device 100, even if with respect to the rapid load change of piston 400, velocity variations is also few, can access stable feed speed.Under the situation that this load disappears, piston rod 400 returns to original position by the elastic force of the interior compression helical spring SP that is located at fluid pressure type feed speed control device 100.
The real public clear 60-37211 communique of [patent documentation 1] Japan (with reference to second figure and the 3rd figure)
The real public clear 61-7860 communique of [patent documentation 2] Japan (with reference to second figure～the 4th figure)
For example, when on workpiece, connecting through hole, need make the feeding of drill bit dead slow speed utilizing rig to carry out under the situation of perforate processing.But, in conventional device such as device that patent documentation 1,2 is put down in writing and above-mentioned fluid pressure type feed speed control device 100, though can adjust the aperture of choke valve 700 by rotating operation knob 900, thereby the feed speed of the drill bit during to machining (reciprocating mass such as traveller) is regulated, but feed speed only can be the feed speed of constant cutting feeding between whole stroke.
Therefore, in conventional device, in cutting process, the feed speed of the drill bit in the time of the through hole on the workpiece can't being about to connect is adjusted to the dead slow speed feeding or between stroke the feed speed of drill bit is switched to dead slow speed from low speed.
In the past, as the means that are used to address this problem a little, can only be except fluid pressure type feed speed control device 100, the fluid pressure type feed speed control device of the dead slow speed feeding when setting up a perforation that is used for perforate again.But, in this case, owing to must two fluid pressure type feed speed control devices 100 be installed at rig, therefore therefore the space that is provided with that need be used to install these two fluid pressure type feed speed control devices 100 exists the problem points that device maximizes, weight increases and cost rises.
Summary of the invention
Therefore, the present invention makes in order to address the above problem a little, and problem of the present invention is to provide a kind of fluid pressure type feed speed control device that can utilize a unit to carry out fast feed and this feed speed of two grades adjustment of dead slow speed feeding.
In order to solve above-mentioned problem, the fluid pressure type feed speed control device that first aspect is put down in writing has: main body cylindraceous; Piston rod, this piston rod is can be configured in this main body along the mode that fore-and-aft direction moves; Cylinder cylindraceous is located at aforementioned body in this cylinder; Piston, this piston is configured in this cylinder in mode that can reciprocating action, and by pushing above-mentioned piston rod, this piston and this piston rod carry out reciprocating action as one; Fluid pressure chamber, this fluid pressure chamber is located at the place ahead of this piston, and fluid storage; Storeroom, this storeroom is located at the rear of above-mentioned piston, and stores above-mentioned fluid; Stream, this stream is communicated with this storeroom, and is located between aforementioned body and the above-mentioned cylinder; The feed speed governor motion, this feed speed governor motion is located at the leading section of above-mentioned cylinder, thereby by mobile control the to the fluid that flows into above-mentioned stream from above-mentioned fluid pressure chamber the translational speed of above-mentioned piston is adjusted; And differential piston, this differential piston is configured in the rear of above-mentioned storeroom, inner peripheral surface and above-mentioned piston rod sliding-contact with aforementioned body, and be arranged to and move along fore-and-aft direction, utilize above-mentioned piston that the fluid of above-mentioned fluid pressure chamber is pushed out to above-mentioned storeroom via above-mentioned feed speed governor motion and stream, thus the feed speed of reciprocating mass is adjusted, above-mentioned fluid pressure type feed speed control device is characterised in that, above-mentioned feed speed governor motion is configured in the leading section of above-mentioned cylinder, and have and be used for the first throttle valve and second choke valve that the flow from above-mentioned fluid pressure chamber towards above-mentioned flow path is adjusted, above-mentioned fluid pressure type feed speed control device has second piston, when above-mentioned piston is pushed by above-mentioned piston rod and when moving to predefined precalculated position, second piston and above-mentioned piston move integratedly and make above-mentioned first throttle valve become the valve state that closes.
According to said structure, for fluid pressure type feed speed control device, the feed speed governor motion disposes a plurality of first throttle valves by the leading section at cylinder and second choke valve constitutes, thus, by piston from the fluid of the indoor release of fluid pressure during by the first throttle valve and second choke valve, utilize the first throttle valve and the second choke valve limited flow respectively, can finely tune the responsiveness of piston with segmenting.When piston moved, the first throttle valve became the valve state that closes by second piston closes.Therefore, can utilize a fluid pressure type feed speed control device, the feed speed of the reciprocating mass in the machining that will move integratedly with piston and piston rod automatically switches to a plurality of gears, and, the feed speed of reciprocating mass is finely tuned thereby can limit near the flow of fluid mobile the stroke end of piston.As a result, can make the device integral miniaturization.
The fluid pressure type feed speed control device that second aspect is put down in writing is characterised in that, in the fluid pressure type feed speed control device that first aspect is put down in writing, at least one side in above-mentioned first throttle valve and above-mentioned second choke valve has: rotary spool, this rotary spool is configured in the above-mentioned cylinder in the mode of rotating freely, and, this rotary spool is adjusted the flow that flows into the fluid of intercommunicating pore from above-mentioned fluid pressure chamber by rotating, and above-mentioned intercommunicating pore is arranged in above-mentioned cylinder and is communicated with above-mentioned stream; And knob, this knob can make above-mentioned rotary spool rotate.
According to this structure, under the situation that the aperture of the first throttle valve and second choke valve is adjusted, if knob is carried out rotating operation, then rotary spool rotates, the flow adjustment part that can utilize rotary spool is adjusted the flow of the fluid of the intercommunicating pore that flows into cylinder from fluid pressure chamber, thereby feed speed is adjusted.
And then, since when piston-advance during to the precalculated position first throttle valve be closed, so the flow minimizing of moving the fluid that flows by piston so can be adjusted into feed speed two grades.
The fluid pressure type feed speed control device that the third aspect is put down in writing is characterised in that, in the fluid pressure type feed speed control device that second aspect is put down in writing, the above-mentioned rotary spool of above-mentioned first throttle valve has second cylinder chamber, this second cylinder chamber and above-mentioned fluid pressure chamber, above-mentioned flow adjustment part is communicated with, above-mentioned second piston is made of the cartridge unit of the leading section that is configured in above-mentioned piston, when above-mentioned second piston and above-mentioned piston move and are embedded in above-mentioned second cylinder chamber integratedly, the above-mentioned flow adjustment part of the above-mentioned first throttle valve of above-mentioned second piston closes, and, above-mentioned second piston has outage, and this outage is used for the fluid that above-mentioned fluid pressure is indoor and sends in above-mentioned second cylinder chamber.
According to said structure, for fluid pressure type feed speed control device, when piston moved, second piston and piston moved integratedly and are embedded in second cylinder chamber of the rotary spool of first throttle valve, thus sealing flow adjustment part.Like this, under the situation that piston moves, valve is closed in the flow adjustment part of first throttle valve, and the opposing party keeps out the state of valve, thereby flows into the flow minimizing of stream side from fluid pressure chamber.Therefore, the switching of the flow adjustment part by the first throttle valve can be adjusted into two grades with the feed speed of the reciprocating mass that moves integratedly with piston and piston rod.In this case, because fluid only flows in one-sided flow adjustment part, therefore the flow that flows is few, therefore can finely tune according near the feed speed this volume for volume journey end.
The fluid pressure type feed speed control device that fourth aspect is put down in writing is characterised in that, in the fluid pressure type feed speed control device that the third aspect is put down in writing, the above-mentioned rotary spool of above-mentioned first throttle valve has: cylindrical portion, this cylindrical portion forms above-mentioned second cylinder chamber, and is embedded in the mode that can rotate in the above-mentioned rotary spool of above-mentioned second choke valve; First-class inlet, this first-class inlet is formed at the inwall of above-mentioned second cylinder chamber, and is communicated with the above-mentioned flow adjustment part of above-mentioned first throttle valve; And second inflow entrance, this second inflow entrance is formed at the inwall of above-mentioned second cylinder chamber, and is communicated with the above-mentioned flow adjustment part of above-mentioned second choke valve.
According to said structure, in the rotary spool of first throttle valve, inwall in second cylinder chamber that is communicated with fluid pressure chamber is formed with the first-class inlet and second inflow entrance, above-mentioned first-class inlet is communicated with the flow adjustment part of first throttle valve, above-mentioned second inflow entrance is communicated with the flow adjustment part of second choke valve, thus, the flow adjustment part of can the fluid that fluid pressure is indoor sending into the first throttle valve or second choke valve.
The fluid pressure type feed speed control device that the 5th aspect is put down in writing is characterised in that, in the fluid pressure type feed speed control device that fourth aspect is put down in writing, above-mentioned second rotary spool is embedded in the cylindrical portion of above-mentioned first rotary spool outward in the mode that can rotate, and is embedded in the mode that can rotate in the open end of above-mentioned cylinder and aforementioned body.
According to said structure, second rotary spool is embedded in the cylindrical portion of first rotary spool outward in the mode that can rotate, and, this second rotary spool is embedded in the open end of cylinder and main body in the mode that can rotate, thus, can be to adjusting towards the flow of the fluid of the flow path between main body and the cylinder via second cylinder chamber, first rotary spool from fluid pressure is indoor.
According to fluid pressure type feed speed control device of the present invention, can utilize a unit to carry out the adjustment of the feed speed of two grades of fast feed and dead slow speed feedings, can cut down installing space and make the device integral miniaturization, and, follow in this, cost is reduced.
Description of drawings
Fig. 1 is the front view that the rig that is equipped with the related fluid pressure type feed speed control device of embodiments of the present invention is shown.
Fig. 2 is the figure of the state when the cutting feeding of the related fluid pressure type feed speed control device of embodiments of the present invention is shown, and is the amplification view along the V-V line of Fig. 1.
Fig. 3 is the figure of the state when the dead slow speed feeding of the related fluid pressure type feed speed control device of embodiments of the present invention is shown, and is the amplification view along the V-V line of Fig. 1.
Fig. 4 is the X portion enlarged drawing of Fig. 2.
Fig. 5 is the amplification view along the Z-Z line of the first throttle valve of Fig. 2, and the flow of the fluid state when maximum (a) is shown, and the example in the adjusting range of fluid (b) is shown, the state when mobile being cut off of fluid (c) is shown.
Fig. 6 is the W portion enlarged drawing of Fig. 2.
Fig. 7 is the amplification view along the Y-Y line of second choke valve of Fig. 2, and the flow of the fluid state when maximum (a) is shown, and the example in the adjusting range of fluid (b) is shown, the state when mobile being cut off of fluid (c) is shown.
Fig. 8 is the figure that is illustrated in the fluid pressure type feed speed control device that uses in the existing rig, (a) is the cutaway view that the state when piston rod is positioned at going-back position is shown, and (b) is the cutaway view that the state when piston rod is positioned at progressive position is shown.
Label declaration
1: main body; 1a: inner peripheral surface; 2: cylinder; 2a: first intercommunicating pore (intercommunicating pore); 2b: second intercommunicating pore (intercommunicating pore); 3: the second pistons; 3a: outage; 4: piston; 5: piston rod; 6: the first rotary spools (rotary spool); 6a: second cylinder chamber; 6b: cylindrical portion; 6c: first-class inlet; 6d: second inflow entrance; 7: the second rotary spools (rotary spool); 8: the first knobs (knob); 9: the second knobs (knob); 10: first throttle valve (feed speed governor motion); 10a: first flow adjustment part (flow adjustment part); 11: the second choke valves (feed speed governor motion); 11a: the second flow adjustment part (flow adjustment part); 12: fluid pressure chamber; 13: stream; 14: storeroom; 17: differential piston; B: fluid pressure type feed speed control device; C: feed speed governor motion.
The specific embodiment
Below, with reference to accompanying drawing the related fluid pressure type feed speed control device of embodiments of the present invention is described.In addition, for convenience, the front and back side of establishing drawing is upper and lower, and the left and right sides of establishing drawing is forward and backward describing.And fluid pressure type feed speed control device B of the present invention is the device by fluid pressure work such as hydraulic pressure or air pressures, below, be that example describes with the situation of utilizing hydraulic.
When fluid pressure type feed speed control device B of the present invention is described, at first the lathe K that is equipped with this fluid pressure type feed speed control device B is described.
" structure of lathe "
As shown in Figure 1, lathe K be to as the workpiece of turned blank (omitting diagram) thus cut, process equipment that grinding etc. is processed into predetermined shape, this lathe K is equipped with: traveller (ram) 33, this traveller 33 can move back and forth; By the feed arrangement 30 that piston-cylinder mechanism constitutes, this feed arrangement 30 utilizes fluid pressure such as air pressure to make traveller driven plunger (omitting diagram) reciprocating action with traveller 33 one; And fluid pressure type feed speed control device B, the feed speed of the traveller driven plunger that this fluid pressure type feed speed control device B can move advancing and retreat is vertically adjusted.
Promptly, lathe K is so long as have the machinery of traveller 33 reciprocating mass such as grade of reciprocating action or the machinery that is equipped with the traveller 33 that objects such as making instrument and workpiece moves back and forth gets final product, for traveller 33 work that how to make reciprocating action or be used for which kind of equipment, not particular determination.
Below, as embodiments of the present invention, be that example describes with the rig A of drill bit (the omitting diagram) reciprocating action that utilizes traveller 33 to make on workpiece, to carry out perforate.
Lathe K constitutes the rig A that mainly has self-action and is assemblied in the fluid pressure type feed speed control device B of rig A, rig A makes drill bit, screw tap (tap), reamer (reamer), milling cutter throws such as (mill) (omitting diagram) rotation and reciprocating action, thereby workpiece is processed.
" structure of rig "
Rig A makes throw (omitting diagram) while rotating perforate is carried out in feeding thus on workpiece machinery, for example be made of the automatic single shaft rig with a fluid pressure type feed speed control device B.Rig A has: chuck 31, and this chuck 31 is used to control throw; Main shaft 32, chuck 31 are assemblied in this main shaft 32; Traveller 33, this traveller 33 move main shaft 32 advance and retreat; Electro-motor M, this electro-motor M are used for drive shaft 32 rotations; Feed arrangement 30, this feed arrangement 30 are used to make traveller 33 linear reciprocation to move; Housing 34, this housing 34 is taken in electro-motor M and feed arrangement 30; Bar 35, this bar 35 are arranged to can be with respect to housing 34 advance and retreat; Plate member 36, this plate member 36 is fixed in this bar 35; Butt parts (Red connects portion's material) 37, these butt parts 37 are fixed in this plate member 36; And linking parts 38, these binding parts 38 are used to link rig A and fluid pressure type feed speed control device B.
As shown in Figure 1, chuck 31 is the tool holder tools of advancing and retreat vertically and rotating with main shaft 32 under the state of controlling the throws such as drill bit (omitting diagram) that are used to carry out perforate processing.
Traveller 33 is traveller driven plunger (omit diagram) by feed arrangement 30 reciprocating action and parts of moving with the traveller driven plunger under action of air pressure, and this traveller 33 is located at housing 34 in mode free to advance or retreat.The speed (feed speed) of these traveller 33 reciprocating actions can and be regulated by fluid pressure type feed speed control device B braking.
Electro-motor M is the rotary driving source that is used to make throw, chuck 31 and main shaft 32 rotations, and this electro-motor M is electrically connected with power supply via not shown driving switch.
As shown in Figure 1, housing 34 is shells of rig A, and this housing 34 is made of parts cylindraceous.
The rear end face 5a arranged opposite of the piston rod 5 of butt parts 37 and fluid pressure type feed speed control device B, these butt parts 37 are before traveller 33, traveller driven plunger (omitting diagram), bar 35 and plate member 36 and then utilize drill bit to carry out the parts that perforate adds the rear end face 5a of man-hour and reciprocating action integratedly of above-mentioned parts and pushing piston bar 5 at workpiece.
" structure of fluid pressure type feed speed control device "
Fluid pressure type feed speed control device B is the control device that the feed speed of the feed arrangement 30 that moves back and forth such as the drill bit that can will make rig A by the flow of oil is adjusted, traveller 33 is set feed speed arbitrarily from low speed to high speed for.As shown in Figure 2, this fluid pressure type feed speed control device B constitutes and has: main body 1 cylindraceous; Piston rod 5, this piston rod 5 is can be configured in this main body 1 along the mode that fore-and-aft direction moves; Cylinder 2 is located at main body 1 in this cylinder 2; Piston 4, this piston 4 is configured in this cylinder 2 in mode that can reciprocating action; Fluid pressure chamber 12, this fluid pressure chamber 12 is located at the place ahead of piston 4; Storeroom 14, this storeroom 14 is located at the rear of piston 4; Feed speed governor motion C, this feed speed governor motion C is located at the leading section of cylinder 2; Stream 13, this stream 13 is communicated with feed speed governor motion C and storeroom 14; And differential piston 17, this differential piston 17 is configured in the rear of storeroom 14.
Fluid pressure type feed speed control device B forms following structure: the piston rod 5 by above-mentioned butt parts 37 pushings advances, piston 4 with piston rod 5 one is advanced, thereby the oil in the fluid pressure chamber 12 are pushed out to storeroom 14 via feed speed governor motion C and stream 13.Promptly, fluid pressure type feed speed control device B is following device: utilize the flow of the oil of the fluid pressure chamber 12 that 11 pairs on the first throttle valve 10 and second choke valve sent by piston 4 to adjust, thereby the pace to piston 4 is controlled, and thus piston rod 5, feed arrangement 30 shown in Figure 1 and the feed speed of traveller 33 is adjusted.
Below, mainly beginning in order with reference to Fig. 2 from the parts that are disposed at rear side, the structure of the each several part of fluid pressure formula feed speed control device B describes.
" structure of piston rod "
Piston rod 5 shown in Figure 2 is parts that rear end face 5a is advanced piston 4 by above-mentioned butt parts 37 pushings, and this piston rod 5 is made of columned parts.Piston rod 5 connects cover 19, spring 15 and differential pistons 17, is fixed with waveform barrier film (bellowphragm) 18 and piston 4 at the front end of this piston rod 15.
" structure of main body "
" structure of cover and spring "
As shown in Figure 2, cover 19 is with the parts of piston rod 5 supportings for the rear openings end of free to advance or retreat and sealing main body 1.Cover 19 clips seal member 23 and is embedded in main body 1, and is fixed in main body 1 by back-up ring 21.
" structure of differential piston and waveform barrier film "
Above-mentioned differential piston 17 is made of parts cylindraceous roughly, and this differential piston 17 is assembled into the outer peripheral face sliding-contact of the inner peripheral surface 1a of main body 1 and piston rod 5 and can moves along fore-and-aft direction.Differential piston 17 clips the position that waveform barrier film 18 is arranged on the rear of storeroom 14, and overcomes the elastic force of spring 15 and move by the oil pressure of the oil in the storeroom 14.
" structure of storeroom "
" structure of distance piece "
" structure of cylinder "
" structure of piston "
As shown in Figure 2, piston 4 is following parts: when piston rod 5 during, this piston 4 and piston rod 5 reciprocating action integratedly by butt parts 37 pushing, the oil in the fluid pressure chamber 12 are released and are made this oil via feed speed governor motion C towards stream 13 side flow.Piston 4 has the stream of returning 4a, piston stream 4b and bar-shaped 4c, returns the central portion that stream 4a is arranged in piston 4 vertically, and piston stream 4b is roughly that tubular is formed on fluid pressure chamber's 12 sides, and bar-shaped 4c is cylindric storeroom 14 sides that are formed on.Piston 4 clips seal member 25 and is inserted in the cylinder 2 in reciprocating action mode freely.
Returning stream 4a is communicated with storeroom 14, stream 13 and piston stream 4b.Be provided with check-valves 16 in piston stream 4b, and via being provided with back-up ring 28 in second piston 3.
" structure of check-valves "
Check-valves 16 is to be used to stop when piston 4 advances the oil in the fluid pressure chamber 12 by second piston, 3 inside, piston stream 4b and return the valve of stream 4a towards stream 13 side flow.Check-valves 16 is made of valve seat, spool 16a and valve spring 16b, and valve seat is formed at the interior end of piston stream 4b, and spool 16a is used to seal this valve seat, and valve spring 16b is used to push this spool 16a.
" second structure of piston "
This outage 3a is arranged in when second piston 3 moves to foremost not can be by the position after the leaning on of the inwall of second 6a of cylinder chamber sealing.
" structure of fluid pressure chamber and stream "
As shown in Figure 2, fluid pressure chamber 12 is positions of store oil, is the cylinder chamber that is formed by cylinder 2, piston 4, second piston 3 and first rotary spool 6 etc.
" structure of feed speed governor motion "
Feed speed governor motion C be by to the oil (liquid) that flows into streams 13 from fluid pressure chamber 12 thus the mobile valve gear that the translational speed of piston 4 is adjusted of controlling, dispose a plurality of at the leading section of cylinder 2.Feed speed governor motion C mainly is made of the first throttle valve 10 and second choke valve 11 that are used for the flow of 13 oil that flow from fluid pressure chamber 12 towards stream is adjusted.
The structure of＜first throttle valve 〉
As shown in Figure 2, first throttle valve 10 constitutes mainly has first rotary spool 6, first knob 8 and above-mentioned second piston 3, first rotary spool 6 has first flow adjustment part 10a, this first flow adjustment part 10a is used for the flow from the oil of fluid pressure chamber 12 that flows into the first intercommunicating pore 2a be communicated with stream 13 is adjusted, and first knob 8 can make this first rotary spool, 6 rotations.
The structure of＜the first rotary spool 〉
First rotary spool 6 is that this first rotary spool 6 is configured in the cylinder 2 and second rotary spool 7 in the mode that can rotate as the parts of the adjustment component performance function that is used for the translational speed of the flow of the oil that flows towards stream 13 in fluid pressure chamber 12 and piston 4 is adjusted.First rotary spool 6 has: second 6a of cylinder chamber, and the 6a of this second cylinder chamber is communicated with fluid pressure chamber 12, first flow adjustment part 10a and the second flow adjustment part 11a; Cylindrical portion 6b, second rotary spool 7 is embedded in this cylindrical portion 6b outward in the mode that can rotate; The first-class inlet 6c and the second inflow entrance 6d, this first-class inlet 6c and the second inflow entrance 6d are formed at the inwall of second 6a of cylinder chamber; First flow is adjusted groove 6e (with reference to Fig. 4), and this first flow is adjusted groove 6e and is communicated with first-class inlet 6c; Round plate 6f, first-class inlet 6c and first flow are adjusted groove 6e and are formed at this round plate 6f; Bolt 29, this bolt 29 is used to seal second 6a of cylinder chamber; And first knob 8, this first knob 8 is outer to be embedded in cylindrical portion 6b, and is used to make first rotary spool 6 to rotate.
As shown in Figure 3, second 6a of cylinder chamber is made of the filled chamber of oil, and is communicated with fluid pressure chamber 12, and this oily filled chamber is by forming with lower member: the cylindrical portion 6b of first rotary spool 6; Second piston 3, this second piston 3 can be embedded in the rear end side of cylindrical portion 6b or leave from the rear end side of cylindrical portion 6b; And bolt 29, this bolt 29 is embedded in the front openings end of cylindrical portion 6b.Second 6a of cylinder chamber forms in the fluid pressure chamber 12 part of the oil circuit of the oil that flows towards stream 13, is formed with the first-class inlet 6c and the second inflow entrance 6d at the inwall of the 6a of this second cylinder chamber.
First-class inlet 6c is following oil circuit: when second piston 3 is positioned at the position of fluid pressure chamber's 12 sides, this first-class inlet 6c is in open state, oil from second 6a of cylinder chamber towards stream 13 side flow, when before second piston 3 and then when being embedded in second 6a of cylinder chamber, this first-class inlet 6c is by 3 sealings of second piston.The axle center of first-class inlet 6c from the first intercommunicating pore 2a towards second 6a of cylinder chamber wears.First-class inlet 6c is communicated with second 6a of cylinder chamber and first flow adjustment part 10a.
The second inflow entrance 6d is the oil circuit of the second flow adjustment part 11a that is used for the oil in second 6a of cylinder chamber is sent into second choke valve 11 in the outside that is positioned at cylindrical portion 6b.The second inflow entrance 6d is communicated with second 6a of cylinder chamber and the second flow adjustment part 11a.The second inflow entrance 6d is arranged in following position in cylindrical portion 6b: when second piston 3 moves to when being embedded in second 6a of cylinder chamber foremost, not by the forward position of second piston, 3 sealings.
As shown in Figure 4, thus first flow adjust groove 6e and be used for this oil being flowed into the groove that the flow of stream 13 is adjusted in that first-class inlet 6c is open when becoming oil in second 6a of cylinder chamber from state that this first-class inlet 6c flows into.Shown in Fig. 5 (a)～(c), first flow is adjusted groove 6e and is formed by V-shaped valley, (about 3/4 week) shoals the degree of depth that this V-shaped valley forms groove gradually more than the half cycle from beginning to spread all near the first-class inlet 6c of the outer peripheral face of round plate 6f roughly, and the inwall that utilizes this first flow to adjust groove 6e and cylinder 2 forms oil circuit.
As shown in Figure 5, round plate 6f is the discoid position that forms second 6a of cylinder chamber, first-class inlet 6c and first flow adjustment groove 6e, and this round plate 6f is embedded in the front side of fluid pressure chamber 12.
The structure of＜the first knob 〉
The structure of＜the second choke valve 〉
As shown in Figure 2, second choke valve 11 constitutes mainly has second rotary spool 7 and second knob 9, above-mentioned second rotary spool 7 is configured in the cylinder 2 in the mode of rotating freely, and has the second flow adjustment part 11a, this second flow adjustment part 11a is used for inflow is arranged in the flow from the oil of fluid pressure chamber 12 of the second intercommunicating pore 2b of cylinder 2 and adjusts, and above-mentioned second knob 9 can make second rotary spool 7 rotate.
Same with above-mentioned first rotary spool 6, second rotary spool 7 is as the adjustment component performance function that the translational speed of the flow of the oil that flows towards stream 13 in fluid pressure chamber 12 and piston 4 is adjusted.As shown in Figure 6, second rotary spool 7 has: valve opening 7a, and this valve opening 7a is communicated with second 6a of cylinder chamber via the second inflow entrance 6d; Cylindrical portion 7c, this cylindrical portion 7c is embedded in the leading section of cylinder 2 in the mode that can rotate; The second flow adjustment part 7b, this second flow adjustment part 7b is formed at the outer peripheral face of cylindrical portion 7c; Main body closure 7d, this main body closure 7d is embedded in the main body 1 in the mode that can rotate; And the 7e of knob department of assembly, second knob 9 shown in Figure 2 is assemblied in the 7e of this knob department of assembly.Promptly, second rotary spool 7 is embedded in the cylindrical portion 6b of first rotary spool 6 outward in the mode that can rotate, and embed in the mode that can rotate in the open end of cylinder 2 and main body 1, if second knob 9 is carried out rotating operation then these second rotary spool, 7 rotations, can adjust the flow of oil mobile in second flow adjustment groove 7b.
As shown in Figure 6, valve opening 7a is the position of a part of the oil circuit of the oil that flows between the second inflow entrance 6d that is used to form at second 6a of cylinder chamber and the stream 13, the center axis of this valve opening 7a is communicated with the second inflow entrance 6d, and the peripheral part side is communicated with stream 13 via the second intercommunicating pore 2b.
As shown in Figure 6, to adjust groove 6e same with above-mentioned first flow, and second flow is adjusted groove 7b and is used for groove that the flow that flows into the oil of stream 13 from the second inflow entrance 6d is adjusted.Shown in Fig. 7 (a)～(c), second flow is adjusted groove 7b and is formed by V-shaped valley, (about 3/4 week) shoals the degree of depth that this V-shaped valley forms groove gradually more than the half cycle from beginning to spread all near the valve opening 7a of the outer peripheral face of cylindrical portion 7c roughly, and the inwall that utilizes this second flow to adjust groove 7e and cylinder 2 forms oil circuit.
As shown in Figure 2, main body closure 7d is the position of the front openings end of sealing main body 1, and this main body closure 7d clips seal member 26 and is embedded in the main body 1 in the mode that can rotate, and is fixed in main body 1 by back-up ring 22.
The 7e of knob department of assembly is following position: be embedded in this 7e of knob department of assembly and be screwed to the 7e of this knob department of assembly outside second knob 9, and, the 7e of this knob department of assembly is embedded in cylindrical portion 6b outward in the mode of rotating freely, and the 7e of this knob department of assembly forms tubular.
The structure of＜the second knob 〉
" effect "
Below, with reference to each figure the effect of the related fluid pressure type feed speed control device B of embodiments of the present invention is described.
" the body feeding operation of rig "
In the body feeding operation of rig A before near the machined surface of not shown drill bit being delivered to workpiece the processing, as shown in Figure 1, butt parts 37 are in the contactless state that does not contact with piston rod 5.Therefore, the feed arrangement 30 of rig A also be can't help fluid pressure type feed speed control device B braking, can make drill bit with feed speed feeding fast.Under the situation of carrying out perforate processing, workpiece is fixed in workbench (omitting diagram), while thereby making electro-motor M rotation drive feed arrangement 30 makes main shaft 32 and traveller 33 feedings, and make drill bit near workpiece.Drill bit and traveller 33, bar 35, plate member 36 and butt parts 37 advance integratedly, with feed speed feeding fast.
" cutting feeding operation "
When not shown drill bit is fed to position near workpiece, butt parts 37 are connected to the rear end face 5a of piston rod 5 and are braked by hydraulic pressure, butt parts 37 opposing piston rods 5 and pushing piston bar 5 also advance, and the feeding that therefore becomes feed arrangement 30 is the cutting feeding operation of low speed slightly.This cutting feeding operation begins the position that workpiece carries out perforate processing lasted till soon from drill bit and connects the supplying position that forms through hole at workpiece.In other words, cutting feeding operation be from the position that butt parts 37 shown in Figure 2 are connected to piston rod 5 to second piston, the 3 first-class inlet 6c of sealing first throttle valve 10 is become to close till the valve state during.
As shown in Figure 2, in cutting feeding operation, when piston rod 5 advances, while the oil that the piston 4 and second piston 3 push in the fluid pressure chamber 12 advances.For the oil that is pushed out from fluid pressure chamber 12, one side flows in the storeroom 14 by first flow adjustment part 10a, the first intercommunicating pore 2a and stream 13 from the first-class inlet 6c of second 6a of cylinder chamber, and the opposing party flows in the storeroom 14 by the second flow adjustment part 11a, the second intercommunicating pore 2b and stream 13 from the second inflow entrance 6d of second 6a of cylinder chamber.Flow into oil pushing waveform barrier film 18 in the storeroom 14 and differential piston 17 and the two is retreated.
Like this, under the situation of feeding for the speed of cutting feeding based on the drill bit of feed arrangement 30 (with reference to Fig. 1), oil in the fluid pressure chamber 12 flows towards storeroom 14 by stream 13 from two oil circuits, and therefore the flow that flows towards storeroom 14 is many, and flow resistance is little.Therefore, the pace of piston 4 and piston rod 5 is fast, makes the brake force of butt parts 37 brakings little.Feed arrangement 30 when therefore, cutting feeding accelerates the speed of drill bit feeding.
The adjusting of the feed speed the in＜cutting feeding operation 〉
Under wanting the situation that the feed speed in the cutting feeding operation is adjusted, before operation, in advance first knob 8 and second knob 9 are carried out rotating operation, the flow of the oil that the second flow adjustment part 11a at the first flow adjustment part 10a of first throttle valve 10 and second choke valve 11 is flowed is regulated, and can adjust feed speed thus.
For example, thereby first knob 8 is being carried out under the situation that rotating operation regulates feed speed, when shown in Fig. 5 (a), like that first knob 8 being carried out rotating operation when making the right-most position of its right that turns to arrow a, then be in the first flow that is made of V-shaped valley that is configured between the first-class inlet 6c and the first intercommunicating pore 2a and adjust the darkest position of the degree of depth of groove 6e, the flow of adjusting the oil that groove 6e flows towards the first intercommunicating pore 2a via first flow from first-class inlet 6c becomes maximum.
Same therewith, when making it turn to the rightmost side when second knob 9 is carried out rotating operation, shown in Fig. 7 (a), the flow of the oil that flows at the second flow adjustment part 11a of second choke valve 11 becomes maximum.
Like this, when making it turn to the rightmost side when first knob 8 and second knob 9 are carried out rotating operation, the fastest state in the time of will becoming the cutting feeding.
Shown in Fig. 5 (b), make when first knob 8 (with reference to Fig. 2) is carried out rotating operation left that first knob 8 turns to arrow b to the centre position time, the degree of depth that first flow is adjusted groove 6e reduces, and also reduces towards the flow of the mobile oil of the first intercommunicating pore 2a via first flow adjustment groove 6e from first-class inlet 6c.Same therewith, when making second knob 9 turn to the centre position, shown in Fig. 7 (b), in the flow minimizing of the mobile oil of the second flow adjustment part 11a of second choke valve 11 when second knob 9 (with reference to Fig. 2) is carried out rotating operation.
Like this, first knob 8 and second knob 9 are being carried out rotating operation and making under its situation that turns to the centre position, the feed speed in the time of can be with the cutting feeding is adjusted to midrange speed.
Shown in Fig. 5 (c), make when first knob 8 (with reference to Fig. 2) is carried out rotating operation left that first knob 8 turns to arrow c to left-most position the time, the first intercommunicating pore 2a is by 6 sealings of first rotary spool, mobile the stopping of oil.Same therewith, when making second knob 9 turn to left-most position when second knob 9 (with reference to Fig. 2) is carried out rotating operation, shown in Fig. 7 (b), the second intercommunicating pore 2b is by 7 sealings of second rotary spool, mobile the stopping of oil.
Like this, when making it turn to left-most position when first knob 8 and second knob 9 are carried out rotating operation, feed speed is 0, piston 4, piston rod 5 and butt parts 37 move and the feeding of feed arrangement 30 (with reference to Fig. 1) stops.
" dead slow speed feeding operation "
As shown in Figure 3, when piston rod 5 is further pushed by butt parts 37, piston 4 is advanced further, when not shown drill bit advances to the position that the through hole that is about to make workpiece connects, be embedded in the dead slow speed feeding operation that second 6a of cylinder chamber seals first-class inlet 6c (with reference to Fig. 4) thereby will become second piston 3.
Therefore, first throttle valve 10 closes valve, and the oil in the fluid pressure chamber 12 flows in storeroom 14 by outage 3a, second piston, 3 inside, second 6a of cylinder chamber, the second inflow entrance 6d, the second flow adjustment part 11a, the second intercommunicating pore 2b and stream 13.Like this, the oil circuit that fuel feeding flows becomes a place, and thus, the flow of oil reduces, and flow resistance increases.Therefore, for fluid pressure type feed speed control device B, the action of piston 4, piston rod 5 and butt parts 37 is braked, thereby feed speed is slowed down, and carries out the dead slow speed feeding.
Like this, by first throttle valve 10 is opened and closed, oil in the fluid pressure chamber 12 can be released by piston 4 and be two grades, can carry out slow these the two kinds of feedings of dead slow speed feeding of fast quick cutting feeding of feed speed and feed speed towards the flow restriction of storeroom 14 side flow.
The adjusting of the feed speed the in＜dead slow speed feeding operation 〉
Under wanting the situation that the feed speed in the dead slow speed feeding operation is adjusted, thereby before operation, in advance second knob 9 is carried out rotating operation the flow at the mobile oil of the second flow adjustment part 11a of second choke valve 11 is carried out fine adjustment, can regulate feed speed thus.
Shown in Fig. 7 (a), when making this second knob 9 turn to the rightmost side of right of arrow d when second knob 9 is carried out rotating operation, be in second flow that is made of V-shaped valley that is configured between the valve opening 7a and the second intercommunicating pore 2b and adjust the darkest position of the degree of depth of groove 7b, the flow of adjusting the oil that groove 7b flows towards the second intercommunicating pore 2b via second flow from valve opening 7a becomes maximum.Therefore, when making this second knob 9 turn to the rightmost side when second knob 9 is carried out rotating operation, the fastest state when becoming the dead slow speed feeding.
Shown in Fig. 7 (b), when making this second knob 9 turn to the centre position of right of arrow e when second knob 9 being carried out rotating operation from this state, the degree of depth that second flow is adjusted groove 7b reduces, and also reduces towards the flow of the mobile oil of the second intercommunicating pore 2b via second flow adjustment groove 7b from valve opening 7a.Therefore, when making this second knob 9 turn to the centre position when second knob 9 is carried out rotating operation, the state that the feed speed in the time of can being adjusted to the dead slow speed feeding reduces.
Shown in Fig. 7 (c), when making this second knob 9 turn to the right-most position of right of arrow f when second knob 9 is carried out rotating operation, the second intercommunicating pore 2b is by 7 sealings of second rotary spool, mobile the stopping of oil.Therefore, when making this second knob 9 turn to right-most position when second knob 9 is carried out rotating operation, feed speed becomes 0, and the feeding mobile and feed arrangement 30 (with reference to Fig. 1) of piston 4, piston rod 5 and butt parts 37 stops.
As mentioned above, for the present invention, by assembling a fluid pressure type feed speed control device B at rig A, just can make feed speed in the perforate processing automatically become the feed speed of two grades of the dead slow speed feeding operations of the cutting feeding operation of low speed and dead slow speed based on feed arrangement 30, and can make cutting feeding operation the time and the feed speed during dead slow speed feeding operation become proper speed.The fluid pressure type feed speed control device of the compactness of the dead slow speed feeding when thus, the present invention can provide the cutting feeding of a kind of material that can be fit to workpiece etc. and perforate to be about to finish.
[variation]
In addition, the present invention is not limited to above-mentioned embodiment, can carry out various transformations and change in the scope of technological thought of the present invention, and the present invention also reaches certainly in these transformations and invention after changing.
For example, as lathe K with reciprocating mass, so that the situation of traveller 33 feedings of rig A as shown in Figure 1 is that example is illustrated an embodiment of the invention, but, the present invention is not limited thereto, just can use so long as have the machinery of the reciprocating mass that moves back and forth, also can be other device.
And, in the above-described embodiment, as shown in Figure 3, to when second piston 3 is embedded in second 6a of cylinder chamber, first flow adjustment part 10a is illustrated by the situation of second piston, 3 sealings, but, as long as a certain side among the first flow adjustment part 10a or the second flow adjustment part 11a also can be that the second flow adjustment part 11a is closed by 3 sealings of second piston.
In addition, the situation that is respectively equipped with the first throttle valve 10 and second choke valve 11 is that example is illustrated, but is not limited to this.For example, as long as the first-class inlet 6c in second 6a of cylinder chamber and the second inflow entrance 6d are disposed in the position of axially staggering each other, and by the position difference of the inflow entrance of second piston, 3 sealings, also can further set up choke valve and accelerate.If do like this, then feed speed segmentation ground can be adjusted into many grades speed, further, can set the feed speed of the material that is suitable for carrying out the workpiece that perforate processes for.
And first-class inlet 6c is arranged on the position of being sealed by second piston 3 or piston 4 and gets final product when wanting to make feed speed slack-off, also can be arranged on other suitable position.Therefore, for the first-class inlet 6c and the second inflow entrance 6d,, also can make the position opposite of the first-class inlet 6c and the second inflow entrance 6d if change the shape of second piston 3.
Claims (5)
1. fluid pressure type feed speed control device, described fluid pressure type feed speed control device has:
Main body cylindraceous;
Piston rod, this piston rod is can be configured in this main body along the mode that fore-and-aft direction moves;
Cylinder cylindraceous is located at described main body in this cylinder;
Piston, this piston is configured in this cylinder in mode that can reciprocating action, and by pushing described piston rod, thereby this piston and this piston rod carry out reciprocating action as one;
Fluid pressure chamber, this fluid pressure chamber is located at the place ahead of this piston, and fluid storage;
Storeroom, this storeroom is located at the rear of described piston, and stores described fluid;
Stream, this stream is communicated with this storeroom, and is located between described main body and the described cylinder;
The feed speed governor motion, this feed speed governor motion is located at the leading section of described cylinder, by to mobile control of the fluid that flows into described stream from described fluid pressure chamber and the translational speed of described piston is adjusted; And
Differential piston, this differential piston is configured in the rear of described storeroom, and with the inner peripheral surface and the described piston rod sliding-contact of described main body, and be arranged to and can move along fore-and-aft direction,
Utilize described piston that the fluid of described fluid pressure chamber is pushed out to described storeroom via described feed speed governor motion and stream, thus the feed speed of reciprocating mass adjusted,
Described fluid pressure type feed speed control device is characterised in that,
Described feed speed governor motion is configured in the leading section of described cylinder, and has and be used for the first throttle valve and second choke valve that the flow from described fluid pressure chamber towards described flow path is adjusted,
Described fluid pressure type feed speed control device has second piston, when described piston is pushed by described piston rod and when moving to predefined precalculated position, second piston and described piston move integratedly and make described first throttle valve become the valve state that closes.
2. fluid pressure type feed speed control device according to claim 1 is characterized in that,
At least one side in described first throttle valve and described second choke valve has:
Rotary spool, this rotary spool is configured in the described cylinder in the mode of rotating freely, and this rotary spool is adjusted the flow that flows into the fluid of intercommunicating pore from described fluid pressure chamber by rotating, and described intercommunicating pore is arranged in described cylinder and is communicated with described stream; And
Knob, this knob can make described rotary spool rotate.
3. fluid pressure type feed speed control device according to claim 2 is characterized in that,
The described rotary spool of described first throttle valve has second cylinder chamber, and this second cylinder chamber is communicated with described fluid pressure chamber, described flow adjustment part,
Described second piston is made of the cartridge unit of the leading section that is configured in described piston, when described second piston and described piston move and are embedded in described second cylinder chamber integratedly, the described flow adjustment part of the described first throttle valve of described second piston closes, and, described second piston has outage, and this outage is used for the fluid that described fluid pressure is indoor and sends in described second cylinder chamber.
4. fluid pressure type feed speed control device according to claim 3 is characterized in that,
The described rotary spool of described first throttle valve has:
Cylindrical portion, this cylindrical portion form described second cylinder chamber, and are embedded in the mode that can rotate in the described rotary spool of described second choke valve;
First-class inlet, this first-class inlet is formed at the inwall of described second cylinder chamber, and is communicated with the described flow adjustment part of described first throttle valve; And
Second inflow entrance, this second inflow entrance is formed at the inwall of described second cylinder chamber, and is communicated with the described flow adjustment part of described second choke valve.
5. fluid pressure type feed speed control device according to claim 4 is characterized in that,
Described second rotary spool is embedded in the cylindrical portion of described first rotary spool outward in the mode that can rotate, and is embedded in the mode that can rotate in the open end of described cylinder and described main body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-144584 | 2009-06-17 | ||
| JP2009144584A JP4759076B2 (en) | 2009-06-17 | 2009-06-17 | Fluid pressure feed rate control device |
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| Publication Number | Publication Date |
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| CN101927365A true CN101927365A (en) | 2010-12-29 |
| CN101927365B CN101927365B (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102051809A Active CN101927365B (en) | 2009-06-17 | 2010-06-13 | Fluid pressure type feed speed control device |
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| CN (1) | CN101927365B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102787625A (en) * | 2011-05-18 | 2012-11-21 | 利勃海尔挖掘机有限责任公司 | Working apparatus, in particular excavator or machine for material handling |
| CN102913492A (en) * | 2011-08-02 | 2013-02-06 | 杉野机械股份有限公司 | Hydraulic feed-rate control apparatus |
| CN103968069A (en) * | 2014-04-28 | 2014-08-06 | 沈机集团昆明机床股份有限公司 | Gearbox gearshift oil cylinder device |
| CN114258337A (en) * | 2019-06-12 | 2022-03-29 | 第一东方证券有限公司 | Double-speed rotary tool |
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| KR101711787B1 (en) * | 2016-02-18 | 2017-03-02 | 한국정밀기계(주) | Axis through a vacuum-insulated draw bar for cryogenic |
| CN114505108B (en) * | 2022-03-01 | 2023-05-12 | 上海科进生物技术有限公司 | Pipetting device and adjusting method |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP4759076B2 (en) | 2011-08-31 |
| JP2011000666A (en) | 2011-01-06 |
| CN101927365B (en) | 2012-09-19 |
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