CN102886700A - Suspension type pneumatic clamping mechanism for instrument lathe - Google Patents
Suspension type pneumatic clamping mechanism for instrument lathe Download PDFInfo
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- CN102886700A CN102886700A CN2012100540138A CN201210054013A CN102886700A CN 102886700 A CN102886700 A CN 102886700A CN 2012100540138 A CN2012100540138 A CN 2012100540138A CN 201210054013 A CN201210054013 A CN 201210054013A CN 102886700 A CN102886700 A CN 102886700A
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Abstract
The invention belongs to the technical field of mechanical and pneumatic-hydraulic supercharging, and relates to a pneumatic clamping mechanism for an instrument lathe. The pneumatic clamping mechanism is characterized in that a hollow barrel-shaped integral pneumatic-hydraulic supercharging cylinder or a hollow barrel-shaped split pneumatic-hydraulic supercharging cylinder or a hollow barrel-shaped single-air chamber pressure cylinder is taken as a main body, has an internal diameter which is greater than that of a spindle, and is provided with a stabilizer; a suspension type pneumatic fluid pressure cylinder is taken as a core characteristic, the two ends of the suspension type pneumatic fluid pressure cylinder are connected in series with a thrust bearing (3), a sliding sleeve (4), a thrust bearing (5) and a sliding sleeve (6) respectively, and the suspension type pneumatic fluid pressure cylinder is pressed by a hydrostatic spring (7); a tubular spindle (1) and a wear-resistant shaft sleeve (24) are additionally arranged; corresponding additional components, particularly an E-shaped thrust sliding block (301), and different technical schemes are combined; and the pneumatic clamping mechanism can be arranged centrally or on a rear part. The mechanism is suitable for low-cost popularization, adapted to high rotating speed, strong in clamping force, free from pressure leakage, low failure rate and high in automation degree.
Description
Technical field
The invention belongs to machinery and gas-liquid pressure-boosting technical field, relate to the instrument lathe clamping device, particularly relate to instrument lathe automation Pneumatic clamping mechanism.
Background technology
In recent years, the development of instrument lathe automation clamping device is rapid, and especially to being hydraulic pressure, the research of air pressure clamping device is maked rapid progress.Because instrument lathe itself belongs to low value equipment, so consider that from energy-conservation and propagable angle Compressed Gas is the best power source source.Present Pneumatic clamping mechanism roughly has following three class mechanisms:
(1) three-jaw+cone clutch+air-cylinder type clamping device is such as publication 201020510509.8, so this type of mechanism is extensive because transforming simple and easy use.But because the mechanical friction wear point between three-jaw and cone clutch and the tri-claw disk is many, when especially cylinder thrust was larger, wear-out failure was many.
(2) forward type rotary cylinder collet attachment or rear-mounted rotary cylinder etc. do work to piston by static air pressure distributor take the cylinder body of coaxial rotating and piston as the basis.Such as publication 01255364.6, such device is multiplex in high-end machine-building, so the precision of manufacturing is expensive, is difficult to repair, especially working environment is had relatively high expectations, and because structural design, pressure leakage amount problem exists all the time.
(3) clamping device of steel ball+scalene cone+fixed cylinder body+four thrust bearings, such as publication 200610032139.X, the piston of double thrust bearing is installed by front and back gas port control on the static cylinder body, and utilize the piston inner conical surface to promote steel ball, steel ball promotes to be installed on the slope of pull bar, reaches the clamping purpose.This precise structure is complicated, and can't avoid the mechanical wear of steel ball and slope.
For above-mentioned three major types, and the research of other Pneumatic clamping mechanisms, though find that traditional clamping device kind is many, can't search out the high rotating speed of adaptation, powerful clamping, High-efficient Production also can the low-cost clamping device of promoting: be higher than 2500 rev/mins such as rotating speed, piston thrust is greater than more than the 2000kgN, without wear-out failure, simple in structure, easy to maintenance, automaticity is high, without the clamping device of pressure leakage.
Summary of the invention
The present invention aims to provide and is fit to low-cost the popularization, adapts to high rotating speed, and chucking power is strong, and is simple in structure, leaks without pressure, low fault, the instrument lathe Pneumatic clamping mechanism that automaticity is high.Its basic system not only can be installed on main shaft tail, also can be installed in the main spindle box; Can common clamping, also can powerful clamping; Can single collet clamping, also can dual spring chuck two-way clamping.
For achieving the above object, core of the present invention is;
Instrument lathe suspended Pneumatic clamping mechanism; Comprise main shaft (1), anti-wear sleeve (24), collet (2), pull bar (22), tightening round nut (23), suspended fluid pressure cylinder component, and add-on assemble.It is characterized in that; Described suspended fluid pressure cylinder component is by fluid pressure cylinder and be installed on respectively the thrust bearing (3) of both sides, sliding sleeve (4), and thrust bearing (5), sliding sleeve (6), static pressure spring (7), and the cylinder body stabilizer forms; Described fluid pressure cylinder is the hollow barrel-type structure, and internal diameter is greater than main shaft (1); Cylinder body, the piston both sides are respectively equipped with the stage of installed thrust bearing stationary ring; Sliding sleeve (4), sliding sleeve (6) is the hollow barrel-type structure, lives and is assigned in main shaft (1), and the stage of installed thrust bearing rounded end is set respectively; Described fluid pressure cylinder and be installed on respectively the thrust bearing (3) of both sides, sliding sleeve (4), thrust bearing (5), sliding sleeve (6), static pressure spring (7) is series at main shaft (1) successively; Described cylinder body stabilizer comprises, offsets the elastic force apparatus of cylinder body gravity and prevents the rotating set screw of cylinder body (8), and the locating slot (115) that is fixed on main spindle box (27); Described set screw (8) snaps in locating slot (115); Described elastic force apparatus is by pallet (303), spring (304), and spring support (305) forms, and is installed on the cylinder body gravity direction and is fixed in main spindle box (27); Described fluid pressure cylinder is in thrust bearing (3), sliding sleeve (4), and thrust bearing (5), sliding sleeve (6), static pressure spring (7), and static and keep coaxial suspension with main shaft (1) under the acting in conjunction of cylinder body stabilizer.
Such as instrument lathe suspended Pneumatic clamping mechanism as described in [0009], it is characterized in that; Described fluid pressure cylinder is hollow barrel-type integral type gas-liquid pressure-boosting cylinder structure, and by hydraulic piston (9), hydraulic cylinder (10), pneumaticpiston (11), air pressure cylinder body (12), ring piston bar (13) forms; Described hydraulic cylinder (10), air pressure cylinder body (12) is the hollow barrel-type structure, and connects with one heart; Described ring piston bar (13) is two ends ladder tubular constructions, the end pneumaticpiston (11) that is connected, and the other end is the supercharging stage and is provided with circular arc chamfering; Described hydraulic cylinder (10) is provided with pressure sealing ring (101), oil pressure sealing ring (102), repairing hole (103), gas port (104); Described air pressure cylinder body (12) is provided with gas port (105), sealing ring (106), positioning screw hole (107); Described hydraulic piston (9) is provided with sealing ring (108), sealing ring (109); Described repairing hole (103) is connected with repairing tank (111) by pipeline (216); Described positioning screw hole (107) is installed set screw (8).
Such as instrument lathe suspended Pneumatic clamping mechanism as described in [0009], it is characterized in that; Described fluid pressure cylinder is the split type gas-liquid pressure-boosting cylinder structure of hollow barrel-type, and by hydraulic piston (201), hydraulic cylinder (202), booster and connecting line form; Described hydraulic cylinder (202) is provided with pressure guide hole (203), positioning screw hole (107); Described pressure guide hole (203) is connected with booster by pipeline (215); Described booster is by air pressure cylinder body (205), hydraulic cylinder (206), and pneumaticpiston (207), piston rod (208), repairing tank (111), pedestal (219) and connecting line (216) form; Described air pressure cylinder body (205) is provided with gas port (104); Described pedestal (219) respectively with air pressure cylinder body (205), hydraulic cylinder (206) connects and is provided with pressure sealing ring (101), oil pressure sealing ring (102), repairing hole (103), gas port (105), hydraulic pressure oilhole (214); Described repairing hole (103) is connected with repairing tank (111) by pipeline (216); Described pressure guide hole (203) is connected by pipeline (215) with hydraulic pressure oilhole (214); Described positioning screw hole (107) is installed set screw (8).
Such as instrument lathe suspended Pneumatic clamping mechanism as described in [0009], it is characterized in that; Described fluid pressure cylinder is hollow barrel-type list air chamber pressure cylinder, and by piston (29), cylinder body (28) forms; Described piston (29) is provided with sealing ring (108); Described cylinder body (28) is provided with sealing ring (109), pressure guide hole (203), positioning screw hole (107); Described pressure guide hole (203) is by the direct-connected pressure source of pipeline (215); Described positioning screw hole (107) is installed set screw (8).
The present invention has following mounting structure and add-on assemble feature such as instrument lathe suspended Pneumatic clamping structure as described in [0010] or [0011] or [0012].
(1) the present invention is characterized in that such as instrument lathe suspended Pneumatic clamping mechanism as described in [0010] or [0011] or [0012]; Described suspended fluid pressure cylinder component is installed in the main spindle box; Described main shaft (1) has square radial direction through hole, and the installed thrust slide block assembly; Described pushing slide block assembly comprises, a pair of E shape pushing slide block (301), slider support cover (302), drill holder (16); Described E shape pushing slide block (301) have stressed semicircle circular base and transmitting thrust body; Described pedestal and body are an integral body; Described body comprises the transition region that overlaps with main shaft (1) cross section projection, the thrust region that overlaps with drill holder (16) cross section projection; Described E shape pushing slide block (301) body transition region embeds the main shaft square hole, and thrust region is in parallel with the end face of drill holder (16); The annular pedestal that the described a pair of E shape pushing slide block (301) that is installed on main shaft (1) forms is installed on the inner step of slider support cover (302); Described slider support cover (302) end face pressurized is in static pressure spring (7); The annular pedestal that described a pair of E shape pushing slide block (301) forms is in parallel with sliding sleeve (6) end face.
(2) the present invention is characterized in that such as instrument lathe suspended Pneumatic clamping mechanism as described in [0010] or [0011] or [0012]; Described suspended fluid pressure cylinder component is installed in the main spindle box (27); Described main shaft (1) has square radial direction through hole, and the installed thrust slide block assembly; It is characterized in that; Main shaft (1) two ends are separately installed with collet (2), collet (20); Described collet (20) external screw thread is connected with collet (2) internal thread; Described collet (20) places in the drill holder (16); Described drill holder (16) is provided with the inner conical surface consistent with collet (20) male cone (strobilus masculinus) angle and is provided with square through hole; Described square hole embeds the body of E shape pushing slide block (16); Described collet (2) front end is provided with spacing back-up ring (35); Described spacing back-up ring (35) is threaded with anti-wear sleeve (24).
(3) the present invention is characterized in that such as instrument lathe suspended Pneumatic clamping mechanism as described in [0010] or [0011] or [0012]; Described suspended fluid pressure cylinder component is installed on main shaft (1) end, and sliding sleeve (4) is fixed on main shaft (1) cylindrical, sliding main shaft (1) cylindrical that is assigned in of sliding sleeve (6); Described static pressure spring (7) is installed on main shaft (1); Described cylinder body and piston are respectively equipped with stage, and butter lid (18) is installed.
The present invention also has supplementary features divided by outside upper core feature and the mounting structure feature: such as instrument lathe suspended Pneumatic clamping mechanism as described in [0009], it is characterized in that; Described main shaft (1) is hollow tubular shaft, and two ends are provided with to connect uses external screw thread; Be provided with anti-wear sleeve (24) between described main shaft (1) and the collet (2); Described main shaft (1) is connected so that screw thread is coaxial with anti-wear sleeve (24); Described anti-wear sleeve (24) is provided with the inner conical surface consistent with collet (2) male cone (strobilus masculinus) angle.
Supplementary notes
1) about [0009] described elastic force apparatus, purpose is to offset fluid pressure cylinder gravity, to reduce the heat that produces because of radial load in thrust bearing (3) thrust bearing (5) the high speed rotary process, improves bearing service life; The elastic force setting of spring (304) should be 0.9～1.1 times of fluid pressure cylinder gravity; Namely offset through elastic force apparatus, thrust bearing (3) thrust bearing (5) bears the radial load less than 10% fluid pressure cylinder gravity.
2) about static pressure spring (7), the purpose of setting is: keep thrust bearing (3), thrust bearing (5) pressurized suspends fluid pressure cylinder with the guiding force that guarantees thrust bearing; The elastic force of static pressure spring (7) should be set to 5～10 times of fluid pressure cylinder gravity; Cooperate [0018] described elastic force apparatus, thrust bearing (3), thrust bearing (5) bears the radial load less than axial static pressure 2%; Even described thrust bearing is thrust ball bearing under this state, under pine folder state, bearing still has enough guiding forces that fluid pressure cylinder is suspended, and bearing is without the work damage when guaranteeing the main shaft high speed rotary.
The supercharging stage cross-sectional area of the cross-sectional area of the cross-sectional area * pneumaticpiston (12) of the thrust that 3) produces about [0010] described hollow barrel-type integral type pneumohydraulic pressure-cylinder=gas pressure intensity * hydraulic piston (9)/ring piston bar (13).
The cross-sectional area of the cross-sectional area/piston rod (208) of the cross-sectional area * pneumaticpiston (207) of the thrust that 4) produces about the split type pneumohydraulic pressure-cylinder of [0011] described hollow barrel-type=gas pressure intensity * hydraulic piston (201).
5) be the direct-connected pressure source of simplest formula structure about [0012] described hollow barrel-type list air chamber pressure cylinder, for stability, economy considers that piston diameter should not greater than 200mm, require occasion less and that the space is larger so only be applied to thrust; Collet, one of them need arrange position limiting structure pull bar or pressure cylinder.
6) about [0014] described E type pushing slide block (301), when body one end was stressed, opposite side semicircle circular base end face possessed the mechanical characteristic of uniform-compression; As long as so enough thickness and rigidity are arranged, its structure can stably, be transmitted the clamping device required thrust without wearing and tearing ground.
7) about [0017] described main shaft (1) and anti-wear sleeve (24): this designs simplification the T shape design of traditional main shaft, the thermal effectiveness of anti-wear sleeve (24) can be born the mechanical wear that the powerful clamping of collet (2) brings.
Design principle and characteristics
The present invention adopt take internal diameter greater than main shaft and the hollow barrel-type integral type pneumohydraulic pressure-cylinder of stabilizer is installed or the split type pneumohydraulic pressure-cylinder of hollow barrel-type or hollow barrel-type list air chamber pressure cylinder as main body, the two ends thrust bearing (3) of connecting respectively, sliding sleeve (4), thrust bearing (5), sliding sleeve (6) and pressurized are core feature in the suspended pneumatic fluid pressure cylinder of static pressure spring (7), be aided with tubular spindle (1) and anti-wear sleeve (24) structure, in conjunction with corresponding add-on assemble especially E shape pushing slide block (301) and different technical schemes, can mid-or rear-mounted installation, and have respectively following beneficial effect.
1) the suspended structure take the hollow barrel-type pneumohydraulic pressure-cylinder as main body has the characteristics of compact conformation, can be installed in the main spindle box, if need limit Design, the instrument lathe spindle of latus rectum 20MM can shorten in the 150MM.
2) move without the revolution wearing and tearing between fluid pressure cylinder and the seal ring assembly, air-tightness is good, and the life-span is long.
3) gas-liquid pressurizing type fluid pressure cylinder thrust is powerful, and the output of 2～15 times of thrusts of identical cross-section air rammer can be provided, hollow barrel-type integral type pneumohydraulic pressure-cylinder compact conformation wherein, and source of the gas is easy to connect; The split type pneumohydraulic pressure-cylinder of hollow barrel-type is installed more flexible, more ultra-thin.
4) middle clamping device, its pushing slide block assembly, the especially particular design of E shape pushing slide block (301) have guaranteed that the brute force of piston is exported the energy concentric, the inefficiency loss, the machinery-free wearing and tearing are delivered to collet by pull bar non-maintainingly; The floated power output of its fluid pressure cylinder, main shaft is without radial load, and is shaftless to load, so main shaft operates steadily, noise is low, the life-span is long; The oil immersion in main spindle box of its double thrust bearing adds splash lubrication, adapts to high-speed cruising, and caloric value is little, and the life-span is long.
5) middle two-way clamping mechanism can be at the two-way clamping that guarantees provide under the stable prerequisite shorter main shaft.
6) tubulose double thread main shaft and anti-wear sleeve design has been simplified main shaft T shape structure commonly used, and has been strengthened antiwear characteristic.
7) require to be lower than 1500 rev/mins at the production rotating speed, in the situation of piston thrust less than 1500kgn, can adopt rearmounted outstanding single air chamber pressure cylinder clamping device design of holding, its structure dismounting maintenance is simpler and easy.
8) with respect to similar Pneumatic clamping mechanism, multiple application provided by the present invention, simple in structure, low cost of manufacture, chucking power is strong, and stability is high, is easy to promote.
Description of drawings
Fig. 1 is the first embodiment of the present invention: mid-ly outstanding hold integral type pneumohydraulic pressure-cylinder clamping device and partly cut open example.
Fig. 2 is the second embodiment of the present invention: example is partly cutd open by the mid-outstanding split type pneumohydraulic pressure-cylinder two-way clamping mechanism of holding.
Fig. 3 is the third embodiment of the present invention: rearmounted outstanding hold single air chamber pressure cylinder clamping device and partly cut open example.
Fig. 4 is the A-A line sectional side elevation of Fig. 1: the installation effect example of E shape pushing slide block (301).
Fig. 5 is the B-B line sectional side elevation of Fig. 1: the installation effect example of hollow barrel-type integral type pneumohydraulic pressure-cylinder.
Fig. 6 is the C-C line sectional side elevation of Fig. 2: the installation effect example of the split type pneumohydraulic pressure-cylinder of hollow barrel-type.
The accompanying drawing supplementary notes: such as Fig. 1, Fig. 2, the figure that partly cuts open shown in Figure 3, the first half are clamping device pine folder state, Lower Half is clamp position.
Shown in figure: 1. main shaft, 2. collet, 3. thrust bearing, 4. sliding sleeve, 5. thrust bearing, 6. sliding sleeve, 7. static pressure spring, 8. set screw, 9. hydraulic piston, 10. hydraulic cylinder, 11. pneumaticpiston, 12. air pressure cylinder body, 13. ring piston bar, 14. front support bearing, 15. rear support bearing, 16. drill holder, 17. tightening round nut 18. bearing butter lids, 20. collet, 22. pull bar, 23. tightening round nut, 24. anti-wear sleeve, 25. front dust cap, 26. rear dust cap, 27. main spindle box, 28. cylinder body, 29. piston, 30. belt pulley, 31. drill holder, 33. axle sleeve 34. case lids, 35. spacing back-up ring, 101. pressure sealing ring, 102. oil pressure sealing ring, 103. repairing hole, 104. gas port 105. gas ports, 106. sealing ring, 107. positioning screw hole, 108. sealing ring, 109. sealing ring, 110. hydraulic fluid chamber 111. repairing tanks, 115. locating slot, 201. hydraulic piston, 202. hydraulic cylinder, 203. pressure guide hole, 205. air pressure cylinder body, 206. hydraulic cylinder, 207. pneumaticpiston, 208. piston rod, 214. hydraulic pressure oilhole, 215. pipeline 216. pipelines, 219. pedestal, 220. hydraulic oil, 301.E shape pushing slide block, 302. slider support cover, 303. pallet 304. springs, 305. spring support
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
As shown in Figure 1 be the mid-outstanding integral type gas-liquid pressure-boosting clamping device of holding; Main shaft (1) passes front support bearing (14) the rear support bearing (15) that is fixed in main spindle box (27) and is threaded with anti-wear sleeve (24), and the other end is installed belt pulley (30) and is threaded with tightening round nut (17); A pull bar (22) is established at the center of main shaft (1); Pull bar (22) the front end collet (2) that is threaded, the tail end tightening round nut (23) that is threaded; Drill holder (16) is between main shaft (1) and the pull bar (22); The sliding sleeve (4) of connecting successively between described front support bearing (14) the rear support bearing (15), thrust bearing (3), air pressure cylinder body (12), pneumaticpiston (11), ring piston bar (13), hydraulic cylinder (10), hydraulic piston (9), thrust bearing (5), sliding sleeve (4), a pair of E type pushing slide block (301), slider support cover (302), static pressure spring (7); The body transition zone of E shape pushing slide block (301) is installed on the square through hole of main shaft (1), and thrust region is in parallel with drill holder (16) end face; Described hydraulic cylinder (10), air pressure cylinder body (12) is the hollow barrel-type structure, and connects with one heart; Described ring piston bar (13) is two ends ladder tubular constructions, the end pneumaticpiston (11) that is connected, and the other end is the supercharging stage and is provided with circular arc chamfering; Described hydraulic cylinder (10) is provided with pressure sealing ring (101), oil pressure sealing ring (102), repairing hole (103), gas port (104); Described air pressure cylinder body (12) is provided with gas port (105), sealing ring (106), positioning screw hole (107); Described hydraulic piston (9) is provided with sealing ring (108), sealing ring (109); Described repairing hole (103) links to each other with repairing tank (111), and described positioning screw hole (107) is installed set screw (8).By pallet (303), spring (304), the elastic force apparatus that spring support (305) forms is installed on the cylinder body gravity direction and is fixed on main spindle box (27).
In the work, motor is by belt, and band movable strap disc (30) and main shaft (1) rotate; Gases at high pressure enter air pressure cylinder body (12) by gas port (105) and drive pneumaticpiston (11) and ring piston bar (13); Ring piston bar (13) advance with oil pressure sealing ring (102) closure after enter pressurization stages, and by hydraulic oil (220) promotion hydraulic piston (9), thrust bearing (5), sliding sleeve (4), E type pushing slide block (301), drill holder (21), tightening round nut (23), pull bar (22), last driving spring chuck (2) shrinks and holding workpiece.After finishing cutting, gases at high pressure enter air pressure cylinder body (12) by gas port (104), drive pneumaticpiston (11), and ring piston bar (13) and hydraulic piston (9) reset; Static pressure spring (7) promotes sliding sleeve (4), E type pushing slide block (301), and drill holder (31), and driving spring chuck (2) and pull bar (22) tightening round nut (23) reset, workpiece gets loose; Described fluid pressure cylinder is because thrust bearing (3), sliding sleeve (4), thrust bearing (5), sliding sleeve (6), static pressure spring (7), and by pallet (303), the elastic force apparatus that spring (304), spring support (305) form and snap in static under the acting in conjunction of set screw (8) of locating slot and remain coaxial suspension with rotary main shaft (1).
As shown in Figure 2 be the mid-outstanding split type gas-liquid pressure-boosting two-way clamping mechanism of holding; Because this clamping device is provided with and different split type pneumohydraulic pressure-cylinder embodiment illustrated in fig. 1 and dual spring clip designs, thus mainly be explained, and mark identical symbol so that description thereof is omitted for identical formation original paper embodiment illustrated in fig. 1.
Described fluid pressure cylinder is the split type gas-liquid pressure-boosting cylinder structure of hollow barrel-type, and by hydraulic piston (201), hydraulic cylinder (202), booster and connecting line form; Described hydraulic piston (201) is provided with sealing ring (108); Described hydraulic cylinder (202) is provided with sealing ring (109), pressure guide hole (203), positioning screw hole (107); Described pressure guide hole (203) is connected with booster by pipeline (215); Described booster is by air pressure cylinder body (205), hydraulic cylinder (206), and pneumaticpiston (207), piston rod (208), repairing tank (111), pedestal (219) and connecting line (216) form; Described air pressure cylinder body (205) is provided with gas port (104); Described pedestal (219) respectively with air pressure cylinder body (205), hydraulic cylinder (206) is threaded and is provided with pressure sealing ring (101), oil pressure sealing ring (102), repairing hole (103), gas port (105), hydraulic pressure oilhole (214); Described repairing hole (103) is connected with repairing tank (111) by pipeline (216); Described pressure guide hole (203) is connected by pipeline (215) with hydraulic pressure oilhole (214); Described positioning screw hole (107) is installed set screw (8); Main shaft (1) two ends are separately installed with collet (2), collet (20); Described collet (20) external screw thread is connected with collet (2) internal thread; Be provided with drill holder (16) between described collet (20) and the main shaft; Drill holder (16) is provided with radially square through hole, and movable E shape pushing slide block (301) body that embeds; Drill holder (16) is provided with the inner conical surface consistent with collet (20) male cone (strobilus masculinus) angle.
In the work, gases at high pressure enter air pressure cylinder body (205) by gas port (105) and drive pneumaticpiston (207), piston rod (208); Piston rod (208) advance with oil pressure sealing ring (102) closure after enter pressurization stages, promote hydraulic piston (201) and a series of assembly by hydraulic oil (220), promote simultaneously back-moving spring chuck (2) of drill holder (16), collet (20) and holding workpiece.After finishing cutting, gases at high pressure enter air pressure cylinder body (205) and drive pneumaticpiston (207) by gas port (104), piston rod (208), and hydraulic piston (201) resets.Static pressure spring (7) promotes E type pushing slide block (301), drill holder (16), and driving spring chuck (2), and collet (20) resets, and workpiece gets loose.
As shown in Figure 3 be rearmounted outstanding single air chamber pressure cylinder clamping device of holding; Owing to be provided with and different single air chamber pressure cylinder embodiment illustrated in fig. 1 and rearmounted the installation at this clamping device, so mainly be explained, and to marking identical symbol so that description thereof is omitted with identical formation original paper embodiment illustrated in fig. 1: its suspended fluid pressure cylinder is installed on main shaft (1) end; Sliding sleeve (4) is fixed on main shaft (1) cylindrical; Sliding main shaft (1) cylindrical that is assigned in of sliding sleeve (6); Static pressure spring (7) is installed on main shaft (1); Cylinder body (28) and piston (29) form single air chamber cylinder pressure; Cylinder body (28) and piston (29) are respectively equipped with stage, and bearing butter lid (18) is installed; Sliding sleeve (6) is in parallel with tightening round nut (23) end face; Cylinder body (28) is provided with pressure guide hole (203).
In the work, high-pressure medium enters cylinder body (28) by pressure guide hole (203), and driven plunger (29) thrust bearing (5), sliding sleeve (6), tightening round nut (23), pull bar (22), collet (2); Collet (2) shrinks and holding workpiece.After finishing cutting, the pressure source release; Static pressure spring (7) promotes E shape pushing slide block (301), drill holder (31), and collet (2), pull bar (22) and associated components reset, and workpiece gets loose.
At last, describe for above-described embodiment and variation thereof.
(1) above-described embodiment figure only is the explanation schematic diagram of the present invention of simplifying, but not true statement; Such as the lubricating oil splash structure in the main spindle box, the control valve installation site of gases at high pressure, the labyrinth type oil seal structure of front and back dust cap, the fundamental that needs in the real works such as control circuit is all simplified in the example.
(2) above-described embodiment graphics proportion, size, gap, profile, structure only are explanation schematic diagram of the present invention, but not pattern in kind, as: the ratio between hydraulic cylinder among Fig. 1 (10) and the pneumaticpiston (11), size, gap, profile, connected mode etc. only are explanation reference of the present invention.
(3) original creation that has of hollow barrel-type integral type pneumohydraulic pressure-cylinder shown in Figure 1, novelty and practicality, the present invention keeps the application rights of tera incognita.
(4) instrument lathe of the suspended fluid pressure cylinder component shown in the legend is used, and because of itself intrinsic automation characteristic, the present invention has and is applied to the collet-type numerically controlled lathe, the design right of special for automatic instrument lathe.
(5) form of the fluid pressure cylinder of hollow barrel-type shown in the legend and mounting structure thereof only are the more excellent scheme of simplifying, and the present invention has the interior rationally distortion of claim purport scope and setting pressure sensor or arrives the design right of level sensor.
(6) local feature of E shape pushing slide block shown in Figure 4 (301), the present invention has the design right of rationally being out of shape in the claim purport scope.
(7) the hydraulic oil gravity repairing scheme of the tank of repairing shown in the legend (111) for simplifying, the present invention keeps the design right of precompressed repairing of the repairing tank (111) of hollow barrel-type gas-liquid pressure-boosting cylinder component.
(8) in addition, in the scope that does not break away from main idea of the present invention, the permutation and combination of each assembly and installation order can be implemented by multiple variation as shown in drawings.
Claims (8)
1. instrument lathe suspended Pneumatic clamping mechanism comprises, main shaft (1), anti-wear sleeve (24), collet (2), pull bar (22), tightening round nut (23), suspended fluid pressure cylinder component, and add-on assemble.It is characterized in that; Described suspended fluid pressure cylinder component is by fluid pressure cylinder and be installed on respectively the thrust bearing (3) of both sides, sliding sleeve (4), and thrust bearing (5), sliding sleeve (6), static pressure spring (7), and the cylinder body stabilizer forms; Described fluid pressure cylinder is the hollow barrel-type structure, and internal diameter is greater than main shaft; Cylinder body, piston are respectively equipped with the stage of installed thrust bearing stationary ring; Sliding sleeve (4), sliding sleeve (6) is the hollow barrel-type structure, lives and is assigned in main shaft (1), and the stage of installed thrust bearing rounded end is set respectively; Described fluid pressure cylinder and be installed on the thrust bearing (3) of both sides, sliding sleeve (4), thrust bearing (5), sliding sleeve (6), static pressure spring (7) is series at main shaft (1) successively; Described cylinder body stabilizer comprises, offsets the elastic force apparatus of cylinder body gravity and prevents the rotating set screw of cylinder body (8), and the locating slot (115) that is fixed on main spindle box (27); Described set screw (8) snaps in locating slot (115); Described elastic force apparatus is by pallet (303), spring (304), and spring support (305) forms, and is installed on the cylinder body gravity direction and is fixed in main spindle box (27); Described fluid pressure cylinder is in thrust bearing (3), sliding sleeve (4), and thrust bearing (5), sliding sleeve (6), static pressure spring (7), and static and keep coaxial suspension with main shaft (1) under the acting in conjunction of cylinder body stabilizer.
2. instrument lathe suspended Pneumatic clamping mechanism as claimed in claim 1 is characterized in that; Described fluid pressure cylinder is hollow barrel-type integral type gas-liquid pressure-boosting cylinder structure, and by hydraulic piston (9), hydraulic cylinder (10), pneumaticpiston (11), air pressure cylinder body (12), ring piston bar (13), repairing tank (111), and connecting line (216) forms; Described hydraulic cylinder (10), air pressure cylinder body (12) is the hollow barrel-type structure, and connects with one heart; Described ring piston bar (13) is two ends ladder tubular constructions, the end pneumaticpiston (11) that is connected, and the other end is the supercharging stage and is provided with circular arc chamfering; Described hydraulic cylinder (10) is provided with pressure sealing ring (101), oil pressure sealing ring (102), repairing hole (103), gas port (104); Described air pressure cylinder body (12) is provided with gas port (105), sealing ring (106), positioning screw hole (107); Described hydraulic piston (9) is provided with sealing ring (108), sealing ring (109); Described repairing hole (103) links to each other by pipeline (216) with repairing tank (111), and described positioning screw hole (107) is installed set screw (8).
3. instrument lathe suspended Pneumatic clamping mechanism as claimed in claim 1 is characterized in that; Described fluid pressure cylinder is the split type gas-liquid pressure-boosting cylinder structure of hollow barrel-type, and by hydraulic piston (201), hydraulic cylinder (202), booster and connecting line form; Described hydraulic cylinder (202) is provided with pressure guide hole (203), positioning screw hole (107); Described pressure guide hole (203) is connected with booster by pipeline (215); Described booster is by air pressure cylinder body (205), hydraulic cylinder (206), and pneumaticpiston (207), piston rod (208), repairing tank (111), pedestal (219) and connecting line (216) form; Described air pressure cylinder body (205) is provided with gas port (104); Described pedestal (219) respectively with air pressure cylinder body (205), hydraulic cylinder (206) is threaded and is provided with pressure sealing ring (101), oil pressure sealing ring (102), repairing hole (103), gas port (105), hydraulic pressure oilhole (214); Described repairing hole (103) is connected with repairing tank (111) by pipeline (216); Described pressure guide hole (203) is connected by pipeline (215) with hydraulic pressure oilhole (214); Described positioning screw hole (107) is installed set screw (8).
4. instrument lathe suspended Pneumatic clamping mechanism as claimed in claim 1 is characterized in that; Described fluid pressure cylinder is hollow barrel-type list air chamber pressure cylinder, and by piston (29), cylinder body (28) forms; Described piston (29) is provided with sealing ring (108); Described cylinder body (28) is provided with pressure guide hole (203), sealing ring (109), positioning screw hole (107); Described pressure guide hole (203) is by the direct-connected pressure source of pipeline (215); Described positioning screw hole (107) is installed set screw (8).
5. such as instrument lathe suspended Pneumatic clamping mechanism as described in the claim 1.2.3.4, it is characterized in that; Described suspended fluid pressure cylinder component is installed in the main spindle box; Described main shaft (1) has square radial direction through hole, and the installed thrust slide block assembly; Described pushing slide block assembly comprises, a pair of E shape pushing slide block (301), slider support cover (302), drill holder (16); Described E shape pushing slide block (301) have stressed semicircle circular base and transmitting thrust body; Described pedestal and body are an integral body; Described body comprises the transition region that overlaps with main shaft (1) cross section projection, the thrust region that overlaps with drill holder (16) cross section projection; Described E shape pushing slide block (301) body transition region embeds the main shaft square hole, and thrust region is in parallel with the end face of drill holder (16); The annular pedestal that the described a pair of E shape pushing slide block (301) that is installed on main shaft (1) forms is installed on the inner step of slider support cover (302); Described slider support cover (302) end face pressurized is in static pressure spring (7); The annular pedestal that described a pair of E shape pushing slide block (301) forms is in parallel with sliding sleeve (6) end face.
6. instrument lathe suspended Pneumatic clamping mechanism as claimed in claim 5, described suspended fluid pressure cylinder component is installed in the main spindle box; Described main shaft (1) has square radial direction through hole, and the installed thrust slide block assembly; Described pushing slide block assembly comprises, a pair of E shape pushing slide block (301), slider support cover (302), drill holder (16); It is characterized in that; Main shaft (1) two ends are separately installed with collet (2), collet (20); Described collet (20) external screw thread is connected with collet (2) internal thread; Described collet (20) places in the drill holder (16); Described drill holder (16) is provided with the inner conical surface consistent with collet (20) male cone (strobilus masculinus) angle and is provided with square through hole; Described square hole embeds the body of E shape pushing slide block (16); Described collet (2) front end is provided with spacing back-up ring (35); Described spacing back-up ring (35) is threaded with anti-wear sleeve (24).
7. such as instrument lathe suspended Pneumatic clamping mechanism as described in the claim 1.2.3.4, it is characterized in that; Described suspended fluid pressure cylinder component is installed on main shaft (1) end; Described sliding sleeve (4) is fixed on main shaft (1) cylindrical; Sliding main shaft (1) cylindrical that is assigned in of described sliding sleeve (6); Described static pressure spring (7) is installed on main shaft (1); Described cylinder body (28) and piston (29) are respectively equipped with stage, and bearing butter lid (18) is installed.
8. instrument lathe suspended Pneumatic clamping mechanism as claimed in claim 1 is characterized in that; Described main shaft (1) is hollow tubular shaft, and two ends are provided with to connect uses external screw thread; Be provided with anti-wear sleeve (24) between described main shaft (1) and the collet (2); Described main shaft (1) is connected so that screw thread is coaxial with anti-wear sleeve (24); Described anti-wear sleeve (24) is provided with the inner conical surface consistent with collet (2) male cone (strobilus masculinus) angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210054013.8A CN102886700B (en) | 2012-03-05 | 2012-03-05 | Suspension type pneumatic clamping mechanism for instrument lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210054013.8A CN102886700B (en) | 2012-03-05 | 2012-03-05 | Suspension type pneumatic clamping mechanism for instrument lathe |
Publications (2)
| Publication Number | Publication Date |
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| CN102886700A true CN102886700A (en) | 2013-01-23 |
| CN102886700B CN102886700B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210054013.8A Expired - Fee Related CN102886700B (en) | 2012-03-05 | 2012-03-05 | Suspension type pneumatic clamping mechanism for instrument lathe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103302533A (en) * | 2013-06-07 | 2013-09-18 | 安徽力成机械装备有限公司 | Combined type excircle and chamfering turning mechanism |
| CN104015080A (en) * | 2014-05-29 | 2014-09-03 | 陈江源 | Spindle box gas-liquid pressure boosting assembly for instrument lathe |
| CN105033757A (en) * | 2015-07-01 | 2015-11-11 | 孙金曦 | Numerical control indexing pneumatic chuck |
| CN107262744A (en) * | 2016-02-25 | 2017-10-20 | 赵济彦 | A kind of lathe lubricating oil formula head |
| CN110328565A (en) * | 2019-08-19 | 2019-10-15 | 丹阳河工工具有限公司 | A kind of clamping device for screw tap grinding |
| CN112427981A (en) * | 2020-10-29 | 2021-03-02 | 锦州美联桥汽车部件有限公司 | Automatic pipe end clamping device of spiral forming machine |
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| CN110328565A (en) * | 2019-08-19 | 2019-10-15 | 丹阳河工工具有限公司 | A kind of clamping device for screw tap grinding |
| CN112427981A (en) * | 2020-10-29 | 2021-03-02 | 锦州美联桥汽车部件有限公司 | Automatic pipe end clamping device of spiral forming machine |
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|---|---|
| CN102886700B (en) | 2014-12-17 |
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