CN204413711U - A kind of double-piston main shaft is forged a knife and is unloaded power cylinder - Google Patents
A kind of double-piston main shaft is forged a knife and is unloaded power cylinder Download PDFInfo
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- CN204413711U CN204413711U CN201420799512.4U CN201420799512U CN204413711U CN 204413711 U CN204413711 U CN 204413711U CN 201420799512 U CN201420799512 U CN 201420799512U CN 204413711 U CN204413711 U CN 204413711U
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- main shaft
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- oil pocket
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Abstract
The utility model discloses a kind of double-piston main shaft to forge a knife and unload power cylinder, comprise the base be arranged on outside main shaft, cylinder body and double-piston knife machining mechanism, double-piston knife machining mechanism comprises thrust piston, unload power piston, oil cylinder gland and pressure ring, thrust piston and unload the operation of double-piston that power piston forms by the first reset oil pocket, second reset oil pocket and these three oil pockets of oil pocket of forging a knife control, at hydraulic oil after interface of forging a knife enters oil pocket of forging a knife, by two oil cylinder opposite effect power, one produces thrust to main shaft, realize the exchanging knives process of main shaft, another then produces pulling force to main shaft, the thrust produced by exchanging knives process is offset, the active force needed for tool changing is made to become the internal force of main shaft itself, main shaft bearing is as the exterior part of main shaft, the impact of the active force produced in exchanging knives process can not be subject to, thus significantly extend the service life of main shaft bearing, and then saving main shaft bearing damages a series of economic loss brought.
Description
Technical field
The utility model relates to the knife striking cylinder structure of main shaft of numerical control machine tool tool changing, and having is that a kind of double-piston main shaft is forged a knife and unloaded power cylinder.
Background technology
Along with the development of machine industry technology, main shaft is as the core component of lathe, and its performance, rotating speed are progressively improved.The core technology that rotating speed improves is the limit speed of main shaft bearing, and while the raising of main shaft bearing high speed performance, the ability of its axial bearing load then has certain slackening.In main shaft exchanging knives process, main shaft forges a knife the active force of oil cylinder generally at 20000 ~ 30000N, under effect so energetically, and high-speed spindle bearing axial carrying capacity limited when, easily cause main shaft bearing stressed excessive, the life-span of main shaft bearing is terminated in advance, brings huge economic loss to the use of main shaft and lathe.Main shaft bearing front end is conventional tetrad or two one group of bearings generally; the procurement price of one group of bearing thousands of to unit up to ten thousand not etc.; purchase cost is higher; add main shaft maintenance cost and the economic loss etc. brought shut down by lathe, therefore the damage of main shaft bearing cause directly and indirectly economic loss is larger.
Summary of the invention
Technical problem to be solved in the utility model is: for the deficiencies in the prior art, there is provided a kind of double-piston main shaft to forge a knife and unload power cylinder, automatically Song Daoli can be unloaded from main shaft bearing, make main shaft bearing not by the impact of the active force needed for tool changing action, thus significantly extend the service life of main shaft bearing.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of double-piston main shaft is forged a knife and unloaded power cylinder, comprise the base be arranged on outside main shaft, cylinder body and double-piston knife machining mechanism, described base is arranged on the front end of described cylinder body, described base is for connecting rack sleeve, waterproof spacer is provided with between described base and described main shaft, described waterproof spacer is arranged on the outside of described main shaft, there is between described base and described waterproof spacer the first radial clearance, described double-piston knife machining mechanism is arranged on the inner side of described cylinder body, broaching tool bar is equipped with in described main shaft, the outside of described broaching tool bar is provided with disc spring, the front end of described disc spring is provided with block, described double-piston knife machining mechanism comprises thrust piston, unload power piston, oil cylinder gland and pressure ring, described power of unloading piston bush is located at the rear end of described thrust piston, described oil cylinder gland is set on described power of unloading piston, Packed first reset oil pocket is set between the front end of described cylinder body and described thrust piston, described cylinder body, Packed second reset oil pocket is set between described power of unloading piston and described oil cylinder gland, the first described reset oil pocket is connected with the second described reset oil pocket, the second described reset oil pocket is connected with the loose cutter interface be arranged on described end cap, described cylinder body, between the front end of described thrust piston and described power of unloading piston, Packed oil pocket of forging a knife is set, described oil pocket of forging a knife is connected with the interface of forging a knife be arranged on described end cap, the lifting surface area of the first described reset oil pocket is greater than the lifting surface area of the second described reset oil pocket, there is between described thrust piston and described main shaft the second radial clearance, the inner side of the front end of described thrust piston is provided with the broaching tool bar pushing mechanism that can move forward and backward, described broaching tool bar pushing mechanism is arranged on described broaching tool bar, the 3rd radial clearance and the first axial gap is provided with between described broaching tool bar pushing mechanism and described thrust piston, the rear end of described power of unloading piston is fixed with pressure ring, the leading flank of described pressure ring is relative with the trailing flank of described oil cylinder gland, the rear end of described oil cylinder gland is provided with end cap, the inner side of described end cap is provided with baffle ring, described baffle ring is fixed on described main shaft, the second axial gap is provided with between described pressure ring and described baffle ring, there is between described pressure ring and described main shaft the 4th radial clearance, there is between the inner side of described end cap and described baffle ring the 5th radial clearance, forge a knife in process, thrust piston to front-end of spindle move to contact with broaching tool bar pushing mechanism time, first axial gap is eliminated, unload power piston to rear-end of spindle move to pressure ring contact with baffle ring time, second axial gap eliminate.
In the utility model, double-piston refers to thrust piston and unloads power piston, and double-piston forms two oil cylinder, and the operation of double-piston is controlled by the first reset oil pocket, the second reset oil pocket and these three oil pockets of oil pocket of forging a knife.
When double-piston is in initial position, between broaching tool bar pushing mechanism and thrust piston, there is the first axial gap, between pressure ring and baffle ring, there is the second axial gap.In exchanging knives process, after hydraulic oil enters from interface of forging a knife oil pocket of forging a knife, under the effect of oil pressure, thrust piston moves to front-end of spindle direction, unload power piston moves to rear-end of spindle direction, when thrust piston move forward to contact with broaching tool bar pushing mechanism time, first axial gap is eliminated, continuation is promoted broaching tool bar pushing mechanism and travels forward by thrust piston, the proal broaching tool bar that simultaneously drives of broaching tool bar pushing mechanism travels forward, disc spring compression simultaneously, produce spring force, this spring force passes to main shaft by block, makes the thrust that main shaft is subject to forward; Unload power piston to rear-end of spindle direction motion while, pressure ring moves backward with the power piston of unloading, until pressure ring contacts with baffle ring, second axial gap is eliminated, now oil pressure is to unloading power piston with thrust backward, and this thrust passes to baffle ring through pressure ring, then acts on main shaft by baffle ring, make the thrust that main shaft is subject to backward, this thrust backward suffered by main shaft and the thrust forward suffered by it can be cancelled out each other.Visible, at hydraulic oil after interface of forging a knife enters oil pocket of forging a knife, main shaft will be subject to an active force forward and an active force backward, after these two active forces suffered by main shaft are cancelled out each other, main shaft bearing can not be subject to the impact of the active force that exchanging knives process produces, and guarantee the service life of main shaft bearing.
After loose cutter interface connects oil pressure oil, first reset oil pocket and the second reset oil pocket hydrodynamic force, thrust piston and unload power piston by stressed and get back to initial position, the first axial gap and the second axial gap all exist in this condition, and main shaft can smooth rotation.After oil-feed, the second reset oil pocket produces towards the active force of front-end of spindle unloading power piston, and unload power piston advances forward, the second axial gap produces, and when pressure ring is close to oil cylinder gland, unloads power piston and stops travelling forward, while second reset oil pocket oil-feed, first reset oil pocket also oil-feed, produce towards the active force of rear-end of spindle to thrust piston, thrust piston moves backward, when after motion one segment distance, the first axial gap is produced between thrust piston and broaching tool bar pushing mechanism, now thrust piston still can continue to move backward, when the trailing flank of thrust piston is adjacent to the leading flank unloading power piston, thrust piston is by stop motion, and can not continue to move backward, reason is: the lifting surface area due to the first reset oil pocket is greater than the lifting surface area of the second reset oil pocket, therefore under onesize oil pressure effect, second reset oil pocket is greater than the first reset oil pocket to the active force backward of thrust piston to the active force forward unloading power piston, after the trailing flank of such thrust piston and the leading flank unloading power piston are fitted, power forward suffered by thrust piston is greater than power backward, therefore thrust piston cannot continue to move backward, and ensure the existence in the second reset gap, now the leading flank of pressure ring and the trailing flank of oil cylinder gland near, though the power piston of unloading has movement tendency forward, but due to the stop of oil cylinder gland, unload power piston by slack.
The setting of the first radial clearance, the second radial clearance, the 3rd radial clearance, the 4th radial clearance and the 5th radial clearance, after can guaranteeing that broaching tool bar pushing mechanism and thrust piston are thrown off, after pressure ring and baffle ring are thrown off simultaneously, main shaft can smooth rotation.
Described broaching tool bar pushing mechanism comprises and hits ring and bearing pin, the described ring set that hits is located on described main shaft, described bearing pin radial direction is plugged on described broaching tool bar, the two ends of described bearing pin are plugged in respectively described hits on ring, by bearing pin with hit ring and link together, on the sidewall of described main shaft, symmetry offers two guide grooves, and described bearing pin can move back and forth along described two guide grooves.Hit ring and pin shaft design, structure is simple, easy for installation.
Described thrust piston comprises the wide diameter part and narrow diameter section that are wholely set, described power of unloading piston bush is located in described narrow diameter section, the second described radial clearance is provided with between described narrow diameter section and described main shaft, the first described reset oil pocket is arranged between described wide diameter part and described cylinder body, described oil pocket of forging a knife is arranged on described cylinder body, between the front end of described wide diameter part and described power of unloading piston, described wide diameter part and described hitting between ring are provided with the 3rd described radial clearance, described narrow diameter section and described hitting between ring are provided with the first described axial gap.
Above-mentioned forging a knife is unloaded power cylinder and is also comprised spindle taper hole inflatable body, described spindle taper hole inflatable body comprises the connecting rod offering the first passage, the first described passage and external compression contact air, described connecting rod is connected by taper thread with described pressure ring, described pressure ring offers the second passage, described power of unloading piston offers the 3rd passage and the cannelure be connected, described cannelure is opened in the outer surface of described power of unloading piston, the first described passage, the second described passage and the 3rd described passage are communicated with successively and coaxially arrange, described thrust piston offers the 4th passage and the open pore be connected, described open pore is opened in the outer surface of described narrow diameter section, described hitting on ring offers the five-way pore coaxial with the 4th described passage, the entrance of described five-way pore is towards the 4th described passage, described bearing pin offers the 6th passage be connected with described five-way pore, the 6th described passage is connected with the axial broaching tool bar passage be opened on described broaching tool bar, described broaching tool bar passage is connected with spindle taper hole, described cannelure and described open pore axially stagger front and back at main shaft, when thrust piston moves to front-end of spindle, unload power piston after rear-end of spindle motion, cannelure overlaps with open pore and is communicated with.After cannelure is communicated with open pore, Compressed Gas can enter the 4th passage, after thrust piston moves to the first axial gap elimination forward, gas can enter five-way pore, the 6th passage, finally be passed in spindle taper hole through broaching tool bar passage, form normal pressure at spindle taper hole place, preventing pollution thing enters spindle taper hole.
The sidewall of described cylinder body is provided with the position detecting mechanism of the location status for detecting described thrust piston, described position detecting mechanism comprises some spaced position detection unit, each described position detection unit comprises position sensor and adjustment block, described adjustment block is fixed on the sidewall of described cylinder body, described adjustment block offers waist-shaped hole, in described waist-shaped hole, slide block is installed, described position sensor is arranged on described slide block, the front end of described thrust piston is provided with the induction part corresponding to described position sensor position.Double-piston main shaft is forged a knife and is unloaded after power cylinder is installed on main shaft, when must ensure main axis, there is design gaps, to avoid the generation of unnecessary frictional force between rotational parts and nonrotational part.On cylinder body after setting position testing agency, the different axial location of thrust piston is detected easily by the position sensor in several position detection unit, be specially: the extreme position that the position when extreme position that thrust piston advances, thrust piston contact with broaching tool bar pushing mechanism and thrust piston retreat, combined by the unlike signal of position sensor, judge loose cutter and broaching tool state and ensure the first axial gap between thrust piston and broaching tool bar pushing mechanism.
Described end cap is provided with the reseting sensor of the size for detecting the second described axial gap.By the signal intensity of reseting sensor, the situation of the second axial gap can be judged, ensure that pressure ring and baffle ring are throw off when main axis.
Described end cap is provided with some guide fingers, the rear end face of described oil cylinder gland offers the locating slot corresponding to described some guide finger positions, the end of described some guide fingers is stretched in described locating slot through described end cap and described pressure ring, and the outside cover of each described guide finger has a back-moving spring being in compressive state.Be in the back-moving spring of compressive state, the pressure ring moment can be made to be subject to towards the active force of front-end of spindle, even if the power piston of unloading is subject to the active force towards front-end of spindle, ensure that the power piston of unloading can move to front-end of spindle, produces the second axial gap when oil pocket of forging a knife is without oil pressure, therefore, back-moving spring and guide finger form Double-insurance structure, and when can guarantee main axis further, the baffle ring of pressure ring and rotation is thrown off.
Be provided with adjusting pad between the rear end of described base and the front end of described cylinder body, described adjusting pad is for regulating the size of the first described axial gap.Install and use in process, by regulating the thickness of adjusting pad, corresponding adjustment can be carried out to the size of the first axial gap, and then the cutter amount of adding of broaching tool bar is adjusted accordingly.
Described waterproof spacer and the rear side of described baffle ring are all provided with locking nut, and described locking nut is arranged on described main shaft.Two locking nuts play further axial location effect to oil cylinder.
Described baffle ring is made up of two semicircle catch of filling the span of a man's arms on described main shaft, and two described semicircle catch are fastened on main shaft by lock-screw.Baffle ring is locked by two semicircle catch and is formed, easy for installation.Certainly, baffle ring also can be wholely set, and is enclosed within main shaft during installation from rear-end of spindle, then is anchored on main shaft by locking nut.
Compared with prior art, the utility model has the advantage of: disclosed in the utility model, double-piston main shaft is forged a knife and unloaded power cylinder, at hydraulic oil after interface of forging a knife enters oil pocket of forging a knife, by two oil cylinder opposite effect power, one produces thrust to main shaft, realize the exchanging knives process of main shaft, another then produces pulling force to main shaft, the thrust produced by exchanging knives process is offset, the active force needed for tool changing is made to become the internal force of main shaft itself, main shaft bearing is as the exterior part of main shaft, the impact of the active force produced in exchanging knives process can not be subject to, thus significantly extend the service life of main shaft bearing, and then saving main shaft bearing damages a series of economic loss brought.
Accompanying drawing explanation
Fig. 1 be embodiment main shaft forge a knife oil cylinder install on main shaft after structural representation;
Fig. 2 is A place enlarged drawing in Fig. 1;
Fig. 3 is the scheme of installation of guide finger and back-moving spring in embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
The double-piston main shaft of embodiment is forged a knife and is unloaded power cylinder as shown in the figure, comprise the base 1 be arranged on outside main shaft 81, cylinder body 2, double-piston knife machining mechanism, spindle taper hole inflatable body and position detecting mechanism, base 1 is arranged on the front end of cylinder body 2, base 1 is for connecting rack sleeve (not shown), waterproof spacer 11 is provided with between base 1 and main shaft 81, waterproof spacer 11 is arranged on the outside of main shaft 81, base 1 and waterproof spacer 11 between there is the first radial clearance 61, double-piston knife machining mechanism is arranged on the inner side of cylinder body 2, broaching tool bar 82 is equipped with in main shaft 81, the outside of broaching tool bar 82 is provided with disc spring 83, the front end of disc spring 83 is provided with block 84.
Double-piston knife machining mechanism comprises thrust piston 31, unload power piston 32, oil cylinder gland 33 and pressure ring 34, the rear end of oil cylinder gland 33 is provided with end cap 35, unload the rear end that power piston 32 is set in thrust piston 31, oil cylinder gland 33 is set in and unloads on power piston 32, Packed first reset oil pocket 36 is set between the front end of cylinder body 2 and thrust piston 31, cylinder body 2, unload between power piston 32 and oil cylinder gland 33 and Packed second reset oil pocket 37 is set, first reset oil pocket 36 is connected with the second reset oil pocket 37, second reset oil pocket 37 is connected with the loose cutter interface 351 be arranged on end cap 35, cylinder body 2, Packed oil pocket 38 of forging a knife is set between thrust piston 31 and the front end of unloading power piston 32, oil pocket 38 of forging a knife is connected with the interface 352 of forging a knife be arranged on end cap 35, the lifting surface area of the first reset oil pocket 36 is greater than the lifting surface area of the second reset oil pocket 37, there is between thrust piston 31 and main shaft 81 second radial clearance 62, the inner side of the front end of thrust piston 31 is provided with the broaching tool bar pushing mechanism that can move forward and backward.
Broaching tool bar pushing mechanism comprises and hits ring 71 and bearing pin 72, hitting ring 71 is set on main shaft 81, bearing pin 72 radial direction is plugged on broaching tool bar 82, the two ends of bearing pin 72 are plugged in respectively hits on ring 71, by bearing pin 72 with hit ring 71 and link together, on the sidewall of main shaft 81, symmetry offers two guide grooves 85, and bearing pin 72 can move back and forth along two guide grooves 85.
Thrust piston 31 comprises the wide diameter part 311 and narrow diameter section 312 that are wholely set, unloading power piston 32 is set in narrow diameter section 312, second radial clearance 62 is located between narrow diameter section 312 and main shaft 81, first reset oil pocket 36 is arranged between wide diameter part 311 and cylinder body 2, oil pocket 38 of forging a knife is arranged on cylinder body 2, between wide diameter part 311 and the front end of unloading power piston 32, wide diameter part 311 and hit between ring 71 and be provided with the 3rd radial clearance 63, narrow diameter section 312 and hit between ring 71 and be provided with the first axial gap 66, adjusting pad 12 is provided with between the rear end of base 1 and the front end of cylinder body 2, adjusting pad 12 is for regulating the size of the first axial gap 66, pressure ring 34 by screw fastening in the rear end of unloading power piston 32, the leading flank of pressure ring 34 is relative with the trailing flank of oil cylinder gland 33, the inner side of end cap 35 is provided with baffle ring 39, baffle ring 39 is made up of two semicircle catch of filling the span of a man's arms on main shaft 81, two semicircle catch are fastened on main shaft 81 by lock-screw, the rear side of waterproof spacer 11 and baffle ring 39 is all provided with locking nut 86, locking nut 86 is arranged on main shaft 81, the second axial gap 67 is provided with between pressure ring 34 and baffle ring 39, there is between pressure ring 34 and main shaft 81 the 4th radial clearance 64, there is between the inner side of end cap 35 and baffle ring 39 the 5th radial clearance 65, forge a knife in process, thrust piston 31 to main shaft 81 nose motion to hit ring 71 contact time, first axial gap 66 is eliminated, unload power piston 32 and move to pressure ring 34 to main shaft 81 rear end when contacting with baffle ring 39, the second axial gap 67 is eliminated.The setting of the first radial clearance 61, second radial clearance 62, the 3rd radial clearance 63, the 4th radial clearance 64 and the 5th radial clearance 65, after can guaranteeing that hitting ring 71 throws off with thrust piston 31, after pressure ring 34 and baffle ring 39 are thrown off simultaneously, main shaft 81 can smooth rotation.
Spindle taper hole inflatable body comprises the connecting rod 4 offering the first passage 41, first passage 41 and external compression contact air, connecting rod 4 is connected by taper thread with pressure ring 34, pressure ring 34 offers the second passage 42, unload the 3rd passage 43 and cannelure 47 that power piston 32 offer and is connected, cannelure 47 is opened in the outer surface unloading power piston 32, first passage 41, second passage 42 and the 3rd passage 43 are communicated with and coaxial setting successively, thrust piston 31 offers the 4th passage 44 and open pore 48 that are connected, open pore 48 is opened in the outer surface of narrow diameter section 312, hit on ring 71 and offer the five-way pore 45 coaxial with the 4th passage 44, the entrance of five-way pore 45 is towards the 4th passage 44, bearing pin 72 offers the 6th passage 46 be connected with five-way pore 45, 6th passage 46 is connected with the axial broaching tool bar passage 87 be opened on broaching tool bar 82, broaching tool bar passage 87 is connected with spindle taper hole 88, cannelure 47 axially staggers front and back at main shaft 81 with open pore 48, when thrust piston 31 is to main shaft 81 nose motion, unload power piston 32 after end motion after main shaft 81, cannelure 47 overlaps with open pore 48 and is communicated with, the center blowing function of main shaft 81 can be realized.
Position detecting mechanism is arranged on the sidewall of cylinder body 2, for detecting the location status of thrust piston 31.Position detecting mechanism comprises three spaced position detection unit, each position detection unit comprises position sensor 51 and adjustment block 52, adjustment block 52 by screw fastening on the sidewall of cylinder body 2, adjustment block 52 offers waist-shaped hole 53, slide block 54 is installed in waist-shaped hole 53, position sensor 51 is arranged on slide block 54, and the front end of thrust piston 31 is provided with the induction part 313 corresponding to position sensor 51 position.
End cap 35 is provided with reseting sensor 353 and some guide fingers 354 of the size for detecting the second axial gap 67, the rear end face of oil cylinder gland 33 offers the locating slot 331 corresponding to some guide finger 354 positions, the end of some guide fingers 354 is stretched in locating slot 331 through end cap 35 and pressure ring, and the outside cover of each guide finger 354 has a back-moving spring 355 being in compressive state.The scheme of installation of guide finger 354 and back-moving spring 355 is shown in Fig. 3.
In the lathe course of work, at hydraulic oil after interface 352 of forging a knife enters oil pocket 38 of forging a knife, thrust piston 31 and unload power piston 32 and work, by two oil cylinder opposite effect power, one produces thrust to main shaft 81, realize the exchanging knives process of main shaft 81, another then produces pulling force to main shaft 81, the thrust produced by exchanging knives process is offset, the active force needed for tool changing is made to become the internal force of main shaft 81 itself, main shaft bearing (not shown) is as the exterior part of main shaft 81, the impact of the active force produced in exchanging knives process can not be subject to, thus significantly extend the service life of main shaft bearing, and then saving main shaft bearing damages a series of economic loss brought.
Claims (3)
1. a double-piston main shaft is forged a knife and is unloaded power cylinder, comprise the base be arranged on outside main shaft, cylinder body and double-piston knife machining mechanism, described base is arranged on the front end of described cylinder body, described base is for connecting rack sleeve, waterproof spacer is provided with between described base and described main shaft, described waterproof spacer is arranged on the outside of described main shaft, there is between described base and described waterproof spacer the first radial clearance, described double-piston knife machining mechanism is arranged on the inner side of described cylinder body, broaching tool bar is equipped with in described main shaft, the outside of described broaching tool bar is provided with disc spring, the front end of described disc spring is provided with block, it is characterized in that described double-piston knife machining mechanism comprises thrust piston, unload power piston, oil cylinder gland and pressure ring, described power of unloading piston bush is located at the rear end of described thrust piston, described oil cylinder gland is set on described power of unloading piston, the rear end of described oil cylinder gland is provided with end cap, the inner side of described end cap is provided with baffle ring, described baffle ring is fixed on described main shaft, Packed first reset oil pocket is set between the front end of described cylinder body and described thrust piston, described cylinder body, Packed second reset oil pocket is set between described power of unloading piston and described oil cylinder gland, the first described reset oil pocket is connected with the second described reset oil pocket, the second described reset oil pocket is connected with the loose cutter interface be arranged on described end cap, described cylinder body, between the front end of described thrust piston and described power of unloading piston, Packed oil pocket of forging a knife is set, described oil pocket of forging a knife is connected with the interface of forging a knife be arranged on described end cap, the lifting surface area of the first described reset oil pocket is greater than the lifting surface area of the second described reset oil pocket, there is between described thrust piston and described main shaft the second radial clearance, the inner side of the front end of described thrust piston is provided with the broaching tool bar pushing mechanism that can move forward and backward, described broaching tool bar pushing mechanism is arranged on described broaching tool bar, the 3rd radial clearance and the first axial gap is provided with between described broaching tool bar pushing mechanism and described thrust piston, the rear end of described power of unloading piston is fixed with pressure ring, the leading flank of described pressure ring is relative with the trailing flank of described oil cylinder gland, the second axial gap is provided with between described pressure ring and described baffle ring, there is between described pressure ring and described main shaft the 4th radial clearance, there is between the inner side of described end cap and described baffle ring the 5th radial clearance, forge a knife in process, thrust piston to front-end of spindle move to contact with broaching tool bar pushing mechanism time, first axial gap is eliminated, unload power piston to rear-end of spindle move to pressure ring contact with baffle ring time, second axial gap eliminate.
2. a kind of double-piston main shaft according to claim 1 is forged a knife and is unloaded power cylinder, it is characterized in that described broaching tool bar pushing mechanism comprises and hit ring and bearing pin, the described ring set that hits is located on described main shaft, described bearing pin radial direction is plugged on described broaching tool bar, the two ends of described bearing pin are plugged in respectively described hits on ring, by bearing pin with hit ring and link together, on the sidewall of described main shaft, symmetry offers two guide grooves, and described bearing pin can move back and forth along described two guide grooves.
3. a kind of double-piston main shaft according to claim 2 is forged a knife and is unloaded power cylinder, it is characterized in that described thrust piston comprises the wide diameter part and narrow diameter section be wholely set, described power of unloading piston bush is located in described narrow diameter section, the second described radial clearance is provided with between described narrow diameter section and described main shaft, the first described reset oil pocket is arranged between described wide diameter part and described cylinder body, described oil pocket of forging a knife is arranged on described cylinder body, between the front end of described wide diameter part and described power of unloading piston, described wide diameter part and described hitting between ring are provided with the 3rd described radial clearance, described narrow diameter section and described hitting between ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799512.4U CN204413711U (en) | 2014-12-16 | 2014-12-16 | A kind of double-piston main shaft is forged a knife and is unloaded power cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799512.4U CN204413711U (en) | 2014-12-16 | 2014-12-16 | A kind of double-piston main shaft is forged a knife and is unloaded power cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204413711U true CN204413711U (en) | 2015-06-24 |
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ID=53464117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420799512.4U Withdrawn - After Issue CN204413711U (en) | 2014-12-16 | 2014-12-16 | A kind of double-piston main shaft is forged a knife and is unloaded power cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN204413711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493604A (en) * | 2014-12-16 | 2015-04-08 | 宁波海天精工股份有限公司 | Double-piston spindle tool unclamping force removing oil cylinder |
| CN110524292A (en) * | 2019-07-25 | 2019-12-03 | 珠海格力电器股份有限公司 | Tool loosening force unloading device and machining center |
| CN118008766A (en) * | 2024-04-08 | 2024-05-10 | 江苏恒久机械股份有限公司 | Double-acting piston rod assembly and diaphragm compressor |
-
2014
- 2014-12-16 CN CN201420799512.4U patent/CN204413711U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493604A (en) * | 2014-12-16 | 2015-04-08 | 宁波海天精工股份有限公司 | Double-piston spindle tool unclamping force removing oil cylinder |
| CN110524292A (en) * | 2019-07-25 | 2019-12-03 | 珠海格力电器股份有限公司 | Tool loosening force unloading device and machining center |
| CN118008766A (en) * | 2024-04-08 | 2024-05-10 | 江苏恒久机械股份有限公司 | Double-acting piston rod assembly and diaphragm compressor |
| CN118008766B (en) * | 2024-04-08 | 2024-06-04 | 江苏恒久机械股份有限公司 | Double-acting piston rod assembly and diaphragm compressor |
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