CN102886700B - Suspension type pneumatic clamping mechanism for instrument lathe - Google Patents
Suspension type pneumatic clamping mechanism for instrument lathe Download PDFInfo
- Publication number
- CN102886700B CN102886700B CN201210054013.8A CN201210054013A CN102886700B CN 102886700 B CN102886700 B CN 102886700B CN 201210054013 A CN201210054013 A CN 201210054013A CN 102886700 B CN102886700 B CN 102886700B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- main shaft
- pressure
- pressure cylinder
- cylinder body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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 sliding sleeve 1 (4), a thrust bearing 1 (3), a thrust bearing 2 (5) and a sliding sleeve 2 (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 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 rapidly, especially to being hydraulic pressure, make rapid progress by the research of air pressure clamping device.Because instrument lathe itself belongs to low value equipment, so consider from energy-conservation and propagable angle, Compressed Gas is best power source source.Current Pneumatic clamping mechanism roughly has following three class mechanisms:
(1) three-jaw+cone clutch+air-cylinder type clamping device, as publication 201020510509.8, this type of mechanism is because transforming simple and easy therefore using extensively.But because the mechanical friction wear point between three-jaw and cone clutch and tri-claw disk is many, when especially cylinder thrust is larger, wear-out failure is many.
(2) forward type rotary cylinder collet attachment or rear-mounted rotary cylinder etc. are based on the cylinder body of coaxial rotating and piston, are done work to piston by static air pressure distributor.As publication 01255364.6, such device is used for high-end machine-building, therefore manufactures accurate, expensive, is difficult to repair, especially higher to operating environment requirements, and due to structural design, pressure leakage amount problem exists all the time.
(3) clamping device of steel ball+scalene cone+fixed cylinder body+four thrust bearing, as publication 200610032139.X, the piston being provided with double thrust bearing is controlled by front and back gas port on static cylinder body, and utilize piston inner conical surface to promote steel ball, steel ball promotes the slope being installed on pull bar, reaches clamping object.This precise structure is complicated, and cannot 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, cannot search out and adapt to high rotating speed, powerful clamping, High-efficient Production can the clamping device of low-cost popularization: as rotating speed higher than 2500 revs/min, piston thrust is greater than more than 2000kgN, without wear-out failure, structure is simple, easy to maintenance, automaticity is high, without the clamping device of pressure leakage.
Summary of the invention
The present invention aims to provide applicable low-cost popularization, adapts to high rotating speed, chucking power is strong, structure is simple, without pressure leakage, low fault, 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 main spindle box; Commonly can clamp, also can powerful clamp; Can clamp by single collet, 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), spring clip first (2), pull bar (22), tightening round nut (23), suspended fluid pressure cylinder component and add-on assemble, is characterized in that: described suspended fluid pressure cylinder component is by fluid pressure cylinder and be installed on the thrust bearing one (3) of both sides, sliding sleeve one (4), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7) and cylinder body stabilizer respectively and form; Described fluid pressure cylinder is hollow barrel-type structure, and internal diameter is greater than main shaft (1); Cylinder body, piston both sides are respectively equipped with the stage of installed thrust bearing stationary ring; Sliding sleeve one (4), sliding sleeve two (6) are hollow barrel-type structure, and activity is matched with main shaft (1), and arranges the stage of installed thrust bearing rounded end respectively; Described fluid pressure cylinder and be installed on the sliding sleeve one (4) of both sides respectively, thrust bearing one (3), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7) be series at main shaft (1) successively; Described cylinder body stabilizer comprises, and offsets the elastic force apparatus of cylinder body gravity and prevents the pivotal set screw of cylinder body (8), and being fixed on the locating slot (115) of main spindle box (27); Described set screw (8) snaps in locating slot (115); Described elastic force apparatus is made up of pallet (303), spring (304), spring support (305), is installed on cylinder body gravity direction and is fixed on main spindle box (27); Described fluid pressure cylinder is at thrust bearing one (3), sliding sleeve one (4), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7), and static and keep coaxially suspending with main shaft (1) under the acting in conjunction of cylinder body stabilizer.
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 is made up of hydraulic piston (9), hydraulic cylinder (10), pneumaticpiston (11), air pressure cylinder body (12), ring piston bar (13); Described hydraulic cylinder (10), air pressure cylinder body (12) are hollow barrel-type structure, and connect with one heart; Described ring piston bar (13) is two ends ladder tubular construction, and one end is connected pneumaticpiston (11), and the other end is 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) installs set screw (8).
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 is made up of hydraulic piston (201), hydraulic cylinder one (202), booster and connecting line; Described hydraulic cylinder one (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 made up of air pressure cylinder body (205), hydraulic cylinder two (206), pneumaticpiston (207), piston rod (208), repairing tank (111), pedestal (219) and connecting line (216); Described air pressure cylinder body (205) is provided with gas port (104); Described pedestal (219) is connected with air pressure cylinder body (205), hydraulic cylinder two (206) respectively 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) installs set screw (8).
Instrument lathe suspended Pneumatic clamping mechanism as described in [0009], is characterized in that: described fluid pressure cylinder is hollow barrel-type list air chamber pressure cylinder, and is made up of piston (29), cylinder body (28); 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 pipeline (215) direct-connected pressure source; Described positioning screw hole (107) installs set screw (8).
The present invention's instrument lathe suspended Pneumatic clamping structure as described in [0010] or [0011] or [0012] has following mounting structure and add-on assemble feature.
(1) the present invention's instrument lathe suspended Pneumatic clamping mechanism as described in [0010] or [0011] or [0012], is characterized in that: described suspended fluid pressure cylinder component is installed in main spindle box; Described main shaft (1) has square radial direction through hole, and installed thrust slide block assembly; Described pushing slide block assembly comprises, a pair E shape pushing slide block (301), slider support cover (302), drill holder (16); Described E shape pushing slide block (301) have stressed semi-circular shape pedestal and transmitting thrust body; Described pedestal and body are an entirety; Described body comprises the transition region overlapped that to project with main shaft (1) cross section, to project the thrust region overlapped with drill holder (16) cross section; Described E shape pushing slide block (301) body transition zone embeds main shaft (1) square hole, and thrust region is in parallel with the end face of drill holder (16); The circumferential base that the described a pair E shape pushing slide block (301) being installed on main shaft (1) forms is installed on the inner step of slider support cover (302); Described slider support cover (302) end face is pressed on static pressure spring (7); The circumferential base that described a pair E shape pushing slide block (301) forms is in parallel with sliding sleeve (6) end face.
(2) the present invention's instrument lathe suspended Pneumatic clamping mechanism as described in [0010] or [0011] or [0012], is characterized in that: main shaft (1) two ends are separately installed with spring clip first (2), collet two (20); Described collet two (20) external screw thread first with spring clip (2) internal thread is connected; Described collet two (20) is placed in drill holder (16); Described drill holder (16) is provided with the inner conical surface consistent with collet two (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 (301); Described spring clip first (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's instrument lathe suspended Pneumatic clamping mechanism as described in [0010] or [0011] or [0012], it is characterized in that: described suspended fluid pressure cylinder component is installed on main shaft (1) end, sliding sleeve one (4) is fixed on main shaft (1) cylindrical, and sliding sleeve two (6) is sliding is assigned in main shaft (1) cylindrical; Described static pressure spring (7) is installed on main shaft (1); Described cylinder body and piston are respectively equipped with stage, and install butter lid (18).
The present invention is divided by outside upper core feature and mounting structure feature, also there are supplementary features: 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 connection external screw thread; Anti-wear sleeve (24) is provided with between described main shaft (1) and spring clip first (2); Described main shaft (1) is connected with threaded coaxial with anti-wear sleeve (24); Described anti-wear sleeve (24) is provided with the consistent inner conical surface of first with spring clip (2) male cone (strobilus masculinus) angle.
Supplementary notes
1) about [0009] described elastic force apparatus, object is to offset fluid pressure cylinder gravity, to reduce the heat produced because of radial load in thrust bearing one (3), thrust bearing two (5) high speed turning course, improve bearing service life; The elastic force of spring (304) arranges 0.9 ~ 1.1 times that should be fluid pressure cylinder gravity; Namely offset through elastic force apparatus, thrust bearing one (3), thrust bearing two (5) bear the radial load being less than 10% fluid pressure cylinder gravity.
2) about static pressure spring (7), the object of setting is: keep thrust bearing one (3), thrust bearing two (5) pressurized to ensure that the guiding force of thrust bearing makes fluid pressure cylinder suspend; The elastic force of static pressure spring (7) should be set to 5 ~ 10 times of fluid pressure cylinder gravity; Coordinate [0018] described elastic force apparatus, thrust bearing one (3), thrust bearing two (5) bear the radial load being less than axial static pressure 2%; Even if described thrust bearing is thrust ball bearing under this state, under loose clip-like state, bearing still has enough guiding forces that fluid pressure cylinder is suspended, and when ensureing that main shaft turns round at a high speed, bearing is without work damage.
3) the supercharging stage cross-sectional area of the cross-sectional area/ring piston bar (13) of the cross-sectional area * pneumaticpiston (12) of the thrust=gas pressure intensity * hydraulic piston (9) produced about [0010] described hollow barrel-type integral type pneumohydraulic pressure-cylinder.
4) cross-sectional area of the cross-sectional area/piston rod (208) of the cross-sectional area * pneumaticpiston (207) of the thrust=gas pressure intensity * hydraulic piston (201) produced about the split type pneumohydraulic pressure-cylinder of [0011] described hollow barrel-type.
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 is considered, piston diameter should not be greater than 200mm, therefore is only applied to the less and occasion that space is larger of thrust requirements; Collet, pull bar or pressure cylinder one of them need position limiting structure be set.
6) about [0014] described E type pushing slide block (301), when body one end is stressed, opposite side semi-circular shape base end face possesses the mechanical characteristic of uniform-compression; As long as therefore have enough thickness and rigidity, its structure Absorbable organic halogens ground, without abrasively transmitting clamping device required thrust.
7) about [0017] described main shaft (1) and anti-wear sleeve (24): the T design that this arrangement simplifies conventional master spindle, the thermal effectiveness of anti-wear sleeve (24) can be born spring clip first (2) brute force and be clamped the mechanical wear brought.
Design principle and feature
The present invention adopts and is greater than main shaft based on internal diameter and is provided with the hollow barrel-type integral type pneumohydraulic pressure-cylinder of stabilizer or the split type pneumohydraulic pressure-cylinder of hollow barrel-type or hollow barrel-type list air chamber pressure cylinder, connect thrust bearing one (3) respectively in two ends, sliding sleeve one (4), thrust bearing two (5), sliding sleeve two (6) be core feature by the suspended pneumatic fluid pressure cylinder being pressed on 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 there is following beneficial effect respectively.
1) based on the suspended structure of hollow barrel-type pneumohydraulic pressure-cylinder, there is the feature of compact conformation, can be installed in main spindle box, if need limit Design, within the instrument lathe spindle of latus rectum 20MM can foreshorten to 150MM.
2) between fluid pressure cylinder and seal ring assembly without revolution abrading motion, air-tightness is good, and the life-span is long.
3) gas-liquid pressurizing type fluid pressure cylinder thrust is powerful, and identical cross-section air rammer 2 ~ 15 times of thrusts can be provided to export, wherein hollow barrel-type integral type pneumohydraulic pressure-cylinder compact conformation, 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),
Ensure that the brute force of piston exports energy concentric, inefficiency loss, mechanical is worn and torn, and is delivered to collet by pull bar non-maintainingly; The floated Power output of its fluid pressure cylinder, main shaft is without radial load, and without xial feed, therefore main shaft operates steadily, and noise is low, and the life-span is long; The oil immersion in main spindle box of its double thrust bearing adds splash lubrication, and adapt to high-speed cruising, caloric value is little, and the life-span is long.
5) middle two-way clamping mechanism, can provide the two-way clamping of shorter main shaft under the prerequisite ensureing stability.
6) tubulose double thread main shaft and anti-wear sleeve design, simplify conventional main shaft T-shaped structure, and enhance antiwear characteristic.
7) producing rotation speed requirements lower than 1500 revs/min, when piston thrust is less than 1500kgn, rearmounted hanging can be adopted to hold the design of single air chamber pressure cylinder clamping device, and its structure dismounting is safeguarded simpler and easy.
8) relative to similar Pneumatic clamping mechanism, multiple application provided by the present invention, structure is simple, low cost of manufacture, chucking power are strong, stability is high, be easy to popularization.
Accompanying drawing explanation
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: mid-ly outstanding hold split type pneumohydraulic pressure-cylinder two-way clamping mechanism and partly cut open example.
Fig. 3 is the third embodiment of the present invention: rearmountedly 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.
Accompanying drawing remarks additionally: as shown in Fig. 1, Fig. 2, Fig. 3, partly cut open figure, and the first half is clamping device pine clip-like state, and Lower Half is clamp position.
Shown in figure: 1. main shaft, 2. spring clip is first, 3. thrust bearing one, 4. sliding sleeve one, 5. thrust bearing two, 6. sliding sleeve two, 7. static pressure spring, 8. set screw, 9. hydraulic piston, 10. hydraulic cylinder, 11. pneumaticpistons, 12. air pressure cylinder bodies, 13. ring piston bars, 14. front support bearings, 15. rear support bearings, 16. drill holders, 17. tightening round nuts, 18. bearing butter lids, 20. collets two, 22. pull bars, 23. tightening round nuts, 24. anti-wear sleeves, dust cap before 25., dust cap after 26., 27. main spindle boxes, 28. cylinder bodies, 29. pistons, 30. belt pulleys, 31. drill holders, 33. axle sleeves, 34. case lids, 35. spacing back-up rings, 101. pressure sealing ring, 102. oil pressure sealing rings, 103. repairing holes, 104. gas port, 105. gas port, 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 cylinders one, 203. pressure guide hole, 205. air pressure cylinder bodies, 206. hydraulic cylinders two, 207. pneumaticpiston, 208. piston rod, 214. hydraulic pressure oilholes, 215. pipeline, 216. pipeline, 219. pedestal, 220. hydraulic oil, 301.E shape pushing slide block, 302. slider support covers, 303. pallet, 304. spring, 305. spring support
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
As shown in Figure 1 be mid-ly outstanding hold integral type gas-liquid pressure-boosting clamping device; Main shaft (1) is threaded with anti-wear sleeve (24) through front support bearing (14) the rear support bearing (15) being fixed on main spindle box (27), 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) nose threads linking springs chuck one (2), threads connects tightening round nut (23); Drill holder (16) is between main shaft (1) and pull bar (22); To connect successively between described front support bearing (14) rear support bearing (15) sliding sleeve one (4), thrust bearing one (3), air pressure cylinder body (12), pneumaticpiston (11), ring piston bar (13), hydraulic cylinder (10), hydraulic piston (9), thrust bearing two (5), sliding sleeve two (6), a pair 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) are hollow barrel-type structure, and connect with one heart; Described ring piston bar (13) is two ends ladder tubular construction, and one end is connected pneumaticpiston (11), and the other end is 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), and described positioning screw hole (107) installs set screw (8).The elastic force apparatus be made up of pallet (303), spring (304), spring support (305), is installed on cylinder body gravity direction and is fixed on main spindle box (27).
In 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); Enter pressurization stages after ring piston bar (13) advance is closed with oil pressure sealing ring (102), and shunk and holding workpiece by hydraulic oil (220) promotion hydraulic piston (9), thrust bearing two (5), sliding sleeve two (6), E type pushing slide block (301), drill holder (21), tightening round nut (23), pull bar (22), finally driving spring chuck one (2).After completing 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 two (6), E type pushing slide block (301), drill holder (31) driving spring chuck one (2) and pull bar (22) tightening round nut (23) and resets, and workpiece gets loose; Described fluid pressure cylinder is due to thrust bearing one (3), sliding sleeve one (4), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7) and by static under the acting in conjunction of pallet (303), spring (304), elastic force apparatus that spring support (305) forms and the set screw (8) that snaps in locating slot and remain coaxial suspension with rotary main shaft (1).
As shown in Figure 2 be mid-ly outstanding hold split type gas-liquid pressure-boosting two-way clamping mechanism; Because this clamping device is provided with and different split type pneumohydraulic pressure-cylinder embodiment illustrated in fig. 1 and dual spring clip designs, therefore be mainly explained, and identical symbol is marked to omit the description 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 is made up of hydraulic piston (201), hydraulic cylinder one (202), booster and connecting line; Described hydraulic piston (201) is provided with sealing ring (108); Described hydraulic cylinder one (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 made up of air pressure cylinder body (205), hydraulic cylinder two (206), pneumaticpiston (207), piston rod (208), repairing tank (111), pedestal (219) and connecting line (216); Described air pressure cylinder body (205) is provided with gas port (104); Described pedestal (219) is threaded with air pressure cylinder body (205), hydraulic cylinder two (206) respectively 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) installs set screw (8); Main shaft (1) two ends are separately installed with spring clip first (2), collet two (20); Described collet two (20) external screw thread first with spring clip (2) internal thread is connected; Drill holder (16) is provided with between described collet two (20) and main shaft; Drill holder (16) is provided with radial square through hole, and movable embedding E shape pushing slide block (301) body; Drill holder (16) is provided with the inner conical surface consistent with collet two (20) male cone (strobilus masculinus) angle.
In work, gases at high pressure enter air pressure cylinder body (205) by gas port (105) and drive pneumaticpiston (207), piston rod (208); Pressurization stages is entered after piston rod (208) advance is closed with oil pressure sealing ring (102), hydraulic piston (201) and a series of assembly is promoted by hydraulic oil (220), promote drill holder (16) simultaneously back-moving spring chuck one (2), collet two (20) holding workpiece.After completing 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) driving spring chuck one (2), collet two (20) reset, and workpiece gets loose.
As shown in Figure 3 be rearmountedly outstanding hold single air chamber pressure cylinder clamping device; Owing to being provided with at this clamping device and different single air chamber pressure cylinder embodiment illustrated in fig. 1 and rearmounted installation, therefore be mainly explained, and marking identical symbol to omit the description to identical formation original paper embodiment illustrated in fig. 1: its suspended fluid pressure cylinder is installed on main shaft (1) end; Sliding sleeve one (4) is fixed on main shaft (1) cylindrical; Sliding sleeve 2 (6) activity is matched with main shaft (1) cylindrical; 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 install bearing butter lid (18); Sliding sleeve (6) is in parallel with tightening round nut (23) end face; Cylinder body (28) is provided with pressure guide hole (203).
In work, high-pressure medium enters cylinder body (28) by pressure guide hole (203), and driven plunger (29), thrust bearing two (5), sliding sleeve two (6), tightening round nut (23), pull bar (22), spring clip first (2); Spring clip first (2) shrinks and holding workpiece.After completing cutting, pressure source release; Static pressure spring (7) promotes E shape pushing slide block (301), drill holder (31), spring clip first (2), and pull bar (22) and associated components reset, and workpiece gets loose.
Finally, be described for above-described embodiment and change thereof.
(1) above-described embodiment figure is only the explanation schematic diagram of the present invention of simplification, but not tangible expression; As the lubricating oil splash structure in 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 needed in control circuit etc. real work, simplifies in example all.
(2) above-described embodiment graphics proportion, size, gap, profile, structure is only and schematic diagram of the present invention is described, but not pattern in kind, as: the ratio in Fig. 1 between hydraulic cylinder (10) and pneumaticpiston (11), size, gap, profile, connected mode etc. is only and reference of the present invention is described.
(3) original creation that has of the integral type of hollow barrel-type shown in Fig. 1 pneumohydraulic pressure-cylinder, novel and practicality, the present invention retains the application rights of tera incognita.
(4) the instrument lathe application of the suspended fluid pressure cylinder component shown in legend, because of the automation characteristic that itself is intrinsic, the present invention has and is applied to 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 legend and mounting structure thereof are only the more excellent scheme of simplification, and the present invention has rationally distortion and setting pressure sensor or the design right to level sensor in claim main scope.
(6) local feature of the shape of E shown in Fig. 4 pushing slide block (301), the present invention has the design right of rationally distortion in claim main scope.
(7) tank of repairing shown in legend (111) is the hydraulic oil gravity repairing scheme simplified, and the present invention retains the design right of the precompressed repairing of the repairing tank (111) of hollow barrel-type gas-liquid pressure-boosting cylinder component.
(8) in addition, without departing from the scope of the gist of the present invention, each assembly permutation and combination and install order can be implemented by multiple change as shown in drawings.
Claims (8)
1. instrument lathe suspended Pneumatic clamping mechanism, comprise: main shaft (1), anti-wear sleeve (24), spring clip first (2), pull bar (22), tightening round nut (23), suspended fluid pressure cylinder component and add-on assemble, is characterized in that: described suspended fluid pressure cylinder component is by fluid pressure cylinder and be installed on the thrust bearing one (3) of both sides, sliding sleeve one (4), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7) and cylinder body stabilizer respectively and form; Described fluid pressure cylinder is hollow barrel-type structure, and internal diameter is greater than main shaft (1); Cylinder body, piston both sides are respectively equipped with the stage of installed thrust bearing stationary ring; Sliding sleeve one (4), sliding sleeve two (6) are hollow barrel-type structure, and activity is matched with main shaft (1), and arranges the stage of installed thrust bearing rounded end respectively; Described fluid pressure cylinder and be installed on the sliding sleeve one (4) of both sides respectively, thrust bearing one (3), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7) be series at main shaft (1) successively; Described cylinder body stabilizer comprises, and offsets the elastic force apparatus of cylinder body gravity and prevents the pivotal set screw of cylinder body (8), and being fixed on the locating slot (115) of main spindle box (27); Described set screw (8) snaps in locating slot (115); Described elastic force apparatus is made up of pallet (303), spring (304), spring support (305), is installed on cylinder body gravity direction and is fixed on main spindle box (27); Described fluid pressure cylinder is at thrust bearing one (3), sliding sleeve one (4), thrust bearing two (5), sliding sleeve two (6), static pressure spring (7), and static and keep coaxially suspending 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, it is characterized in that: described fluid pressure cylinder is hollow barrel-type integral type gas-liquid pressure-boosting cylinder structure, and is made up of hydraulic piston (9), hydraulic cylinder (10), pneumaticpiston (11), air pressure cylinder body (12), ring piston bar (13), repairing tank (111) and connecting line (216); Described hydraulic cylinder (10), air pressure cylinder body (12) are hollow barrel-type structure, and connect with one heart; Described ring piston bar (13) is two ends ladder tubular construction, and one end is connected pneumaticpiston (11), and the other end is 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 by pipeline (216) with repairing tank (111), and described positioning screw hole (107) installs set screw (8).
3. instrument lathe suspended Pneumatic clamping mechanism as claimed in claim 1, it is characterized in that: described fluid pressure cylinder is the split type gas-liquid pressure-boosting cylinder structure of hollow barrel-type, and is made up of hydraulic piston (201), hydraulic cylinder one (202), booster and connecting line; Described hydraulic cylinder one (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 made up of air pressure cylinder body (205), hydraulic cylinder two (206), pneumaticpiston (207), piston rod (208), repairing tank (111), pedestal (219) and connecting line (216); Described air pressure cylinder body (205) is provided with gas port (104); Described pedestal (219) is threaded with air pressure cylinder body (205), hydraulic cylinder two (206) respectively 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) installs 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 is made up of piston (29), cylinder body (28); 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 pipeline (215) direct-connected pressure source; Described positioning screw hole (107) installs set screw (8).
5. instrument lathe suspended Pneumatic clamping mechanism as described in Claims 2 or 3 or 4, is characterized in that: described suspended fluid pressure cylinder component is installed in main spindle box; Described main shaft (1) has square radial direction through hole, and installed thrust slide block assembly; Described pushing slide block assembly comprises, a pair E shape pushing slide block (301), slider support cover (302), drill holder (16); Described E shape pushing slide block (301) have stressed semi-circular shape pedestal and transmitting thrust body; Described pedestal and body are an entirety; Described body comprises the transition region overlapped that to project with main shaft (1) cross section, to project the thrust region overlapped with drill holder (16) cross section; Described E shape pushing slide block (301) body transition zone embeds main shaft (1) square hole, and thrust region is in parallel with the end face of drill holder (16); The circumferential base that the described a pair E shape pushing slide block (301) being installed on main shaft (1) forms is installed on the inner step of slider support cover (302); Described slider support cover (302) end face is pressed on static pressure spring (7); The circumferential base that described a pair E shape pushing slide block (301) forms is in parallel with sliding sleeve (6) end face.
6. instrument lathe suspended Pneumatic clamping mechanism as described in Claims 2 or 3 or 4, is characterized in that: main shaft (1) two ends are separately installed with spring clip first (2), collet two (20); Described collet two (20) external screw thread first with spring clip (2) internal thread is connected; Described collet two (20) is placed in drill holder (16); Described drill holder (16) is provided with the inner conical surface consistent with collet two (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 (301); Described spring clip first (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. instrument lathe suspended Pneumatic clamping mechanism as described in Claims 2 or 3 or 4, is characterized in that: described suspended fluid pressure cylinder component is installed on main shaft (1) end; Described sliding sleeve one (4) is fixed on main shaft (1) cylindrical; The activity of described sliding sleeve two (6) is matched with main shaft (1) cylindrical; Described static pressure spring (7) is installed on main shaft (1); Described cylinder body (28) and piston (29) are respectively equipped with stage, and install bearing butter lid (18).
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 connection external screw thread; Anti-wear sleeve (24) is provided with between described main shaft (1) and spring clip first (2); Described main shaft (1) is connected with threaded coaxial with anti-wear sleeve (24); Described anti-wear sleeve (24) is provided with the consistent inner conical surface of first with spring clip (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 |
|---|---|
| CN102886700A CN102886700A (en) | 2013-01-23 |
| CN102886700B true CN102886700B (en) | 2014-12-17 |
Family
ID=47530484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210054013.8A Expired - Fee Related CN102886700B (en) | 2012-03-05 | 2012-03-05 | Suspension type pneumatic clamping mechanism for instrument lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102886700B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302533B (en) * | 2013-06-07 | 2015-09-23 | 安徽力成机械装备有限公司 | A kind of combined type cylindrical chamfering sleeve mechanism of car |
| CN104015080B (en) * | 2014-05-29 | 2017-08-25 | 陈江源 | The main spindle box gas-liquid pressure-boosting assembly of instrument lathe |
| CN105033757B (en) * | 2015-07-01 | 2018-03-30 | 孙金曦 | A kind of numerical control scale-division pneumatic chuck |
| CN105619174A (en) * | 2016-02-25 | 2016-06-01 | 赵济彦 | Lubricating oil type machine tool machine 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 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953137A (en) * | 1982-09-13 | 1984-03-27 | Brother Ind Ltd | Apparatus for connecting passage to rotating shaft in precision machine |
| US5078558A (en) * | 1990-02-16 | 1992-01-07 | Hitachi Seiko, Ltd. | Low mass spindle and Z-axis unit |
| CN1748919A (en) * | 2005-10-12 | 2006-03-22 | 玉环龙生机床有限公司 | Lathe chuck |
| CN2829948Y (en) * | 2005-10-25 | 2006-10-25 | 陈相周 | Automatic chucking device of lathe chuck |
| CN100421847C (en) * | 2006-08-24 | 2008-10-01 | 宾焕南 | Air clamper in use for principal axis of lathe |
| CN201183127Y (en) * | 2008-03-07 | 2009-01-21 | 宁波市邱隘思必达轴承厂 | Pneumatic clamp device |
| CN201198092Y (en) * | 2008-04-15 | 2009-02-25 | 柳品法 | Automatic clamping apparatus for machine tool |
| CN201295850Y (en) * | 2008-11-05 | 2009-08-26 | 环一军 | Pneumatic clamping device for processing rotors on lathe |
| CN201824171U (en) * | 2010-08-31 | 2011-05-11 | 玉环县清港机床厂 | Lever-type pneumatic clamping device |
| CN202015965U (en) * | 2011-04-26 | 2011-10-26 | 四川名齿齿轮制造有限公司 | Pneumatic pull rod type clamp of lathe |
-
2012
- 2012-03-05 CN CN201210054013.8A patent/CN102886700B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953137A (en) * | 1982-09-13 | 1984-03-27 | Brother Ind Ltd | Apparatus for connecting passage to rotating shaft in precision machine |
| US5078558A (en) * | 1990-02-16 | 1992-01-07 | Hitachi Seiko, Ltd. | Low mass spindle and Z-axis unit |
| CN1748919A (en) * | 2005-10-12 | 2006-03-22 | 玉环龙生机床有限公司 | Lathe chuck |
| CN2829948Y (en) * | 2005-10-25 | 2006-10-25 | 陈相周 | Automatic chucking device of lathe chuck |
| CN100421847C (en) * | 2006-08-24 | 2008-10-01 | 宾焕南 | Air clamper in use for principal axis of lathe |
| CN201183127Y (en) * | 2008-03-07 | 2009-01-21 | 宁波市邱隘思必达轴承厂 | Pneumatic clamp device |
| CN201198092Y (en) * | 2008-04-15 | 2009-02-25 | 柳品法 | Automatic clamping apparatus for machine tool |
| CN201295850Y (en) * | 2008-11-05 | 2009-08-26 | 环一军 | Pneumatic clamping device for processing rotors on lathe |
| CN201824171U (en) * | 2010-08-31 | 2011-05-11 | 玉环县清港机床厂 | Lever-type pneumatic clamping device |
| CN202015965U (en) * | 2011-04-26 | 2011-10-26 | 四川名齿齿轮制造有限公司 | Pneumatic pull rod type clamp of lathe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102886700A (en) | 2013-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102886700B (en) | Suspension type pneumatic clamping mechanism for instrument lathe | |
| CN201415273Y (en) | Hydraulic chuck | |
| CN201244744Y (en) | Automatic locking apparatus for lathe fixture | |
| CN103659279A (en) | Power unit assembly of drill milling head | |
| CN201020624Y (en) | Deep hole boring positioning and clamping apparatus | |
| CN1142835C (en) | Direct-drive coiller | |
| CN110039352B (en) | Radially adjustable flywheel gear ring lathe inner hole clamping assembly | |
| CN204504279U (en) | A kind of Novel cylinder jacket right boring endoporus special fixture | |
| CN101362295A (en) | Large-piece processing clamping method | |
| CN201446439U (en) | Main shaft core rod for machining axle sleeve parts | |
| CN202344314U (en) | Ram type boring and milling head with dependent built-in accessory indexing mechanism | |
| CN101920349A (en) | Back distribution type front pneumatic chuck | |
| CN109689285A (en) | Releasing unit for machine tool chief axis | |
| CN103480881A (en) | Hydraulic irregular chuck for automatic piston ring cutter | |
| CN107725531B (en) | Combinational gap formula multistage dumper hydraulic cylinder | |
| CN203599946U (en) | Drilling and milling head | |
| CN202367540U (en) | Automatic indexing device for drilling | |
| CN102407458B (en) | Ram type boring and milling head with independent built-in accessory indexing mechanism | |
| CN207188464U (en) | A kind of Novel centering device of centering steel band | |
| CN1788898A (en) | Non-swinging type high-velocity through hole power chuck device | |
| CN204075271U (en) | The pneumatic core clamping device that rises of lathe | |
| CN2920449Y (en) | High speed motor rotor shaft clamping head air blow mechanism | |
| CN220311778U (en) | Connection structure between rotary oil cylinder and oil distribution disc on lathe spindle box | |
| CN104174876A (en) | Main shaft for machine tool, machine tool, and method for preventing machine tool from being worn | |
| CN215617545U (en) | Internal stay formula airtight detection anchor clamps of bicycle brake block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20200305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |