CN2119985U - Improved structure of bidirectional clamp - Google Patents

Abstract

The utility model relates to an improved structure of a bidirectional clamp, comprising a frame body. The base of the utility model can be fixed by screws on a machine tool. A ring-shaped base body is arranged in the frame body. A ring-shaped rotary shaft is arranged in the ring-shaped base body. The ring-shaped rotary shaft can be driven by a belt wheel. Two pistons are arranged in the rotary shaft. The two pistons can push the other two sliding sleeves with conical holes which have the opposite directions in a rotary shaft because of the oil pressure. The two sliding sleeves are respectively sheathed with a barrel clamp which has the opposite direction and whose outer edge forms a cone shape and in which cylindrical holes are arranged. When the two sliding sleeves are subjected to two contrary longitudinal force to move, conical surfaces in the two sliding sleeves press the conical surfaces which are matched with the outer edges of two clamping barrels. Whereas the two clamping barrels are constricted, and processed objects inserted in the two clamping barrels can be constricted.

Description

Improved structure of bidirectional clamp

The utility model system provides a kind of two-way chuck structure improvement, especially refer to that a kind of labor and materials two ends that allow protrude in the anchor clamps both sides simultaneously, labor and materials stage casing part is held in the anchor clamps, and the action of anchor clamps clamping is to control with oil pressure, so that the labor and materials two ends can process simultaneously, reach time saving and energy saving, the two-way chuck structure improvement that accuracy is better.

Known two-way chuck (as Fig. 1), promote the slide block of a taper inner edge with oil pressure because of its clamping system, and tighten a tapered collet compatible with the slide block inner edge, and the clamping labor and materials, its tapered collet is an open flume type, thus can't significantly tighten, otherwise collet chuck will wreck, so collet chuck can only the close cylindrical work of clamping diameter, collet chuck exchanges inconvenience for.

According on take off the conventional construction shortcoming, this creator concentrates on studies through being engaged in the experience of precision instrument manufacturing for many years, develops the utility model eventually, is to be designed to two oil pressure pipes control, two relative collet chucks, and the cooperation oil return pipe, makes the power of tightening of collet chuck more practicable.

For structure, principle, feature and effect to the utility model are understood fully, cooperate diagram now, in detail explanation as back:

The diagram part:

Fig. 1 is a traditional type chuck schematic diagram;

Fig. 2 is the utility model bottom plan view;

Fig. 3 is the utility model section plan;

Fig. 4 is the utility model three-dimensional cutaway view;

Fig. 5 is the utility model planar gesture figure.

Seeing also Fig. 1, is that traditional double is to the chuck generalized section; It utilizes single collet chuck clamping, its chucking power must be not enough, and its bite concentrates on holder one side, workpiece such as long, then workpiece will be sagging because of the principle of " beam " with respect to holding in addition of bite, cause the processing precise degree not good, the processing of workpiece two ends must cause eccentric phenomena, and the design of former rather progress is made troubles on the contrary.

Fig. 2 is the utility model section plan, and the utility model can be fixed on the lathe W, is the design of adopting bitubular folder 17,18, is contacting of face with workpiece G system, so clamping is more firm, cuts simultaneously in order to two lathe tool N, N1.

See also Fig. 3 and cooperate Fig. 4, be the utility model section plan and three-dimensional cutaway view, but its principal character is the framework 1 of a fixing internal rotational structure, interior hollow, its base D can be fixed on the machine-tool, has two oil guide pipe A, B by the framework outside oil pressure oil to be imported oil guiding hole A1, B1 between framework 1 inner each structure.Framework 1 hollow bulb can overlap a pedestal 2, there are two annular fixed cap 3,4 spiral shells solid with framework 1, be hollow in the pedestal 2, inner edge is stepped, can insert two bearings 5,6, there are two oil duct A2, B2 in place, pedestal 2 belows, and the fluid that the slot that each structure interface produced can be oozed out imports the oil storage tank D0 in the base mouth, leads in the oil return press pump through oil return pipe 16.Pedestal 2 hollow bulbs are established a rotating shaft 7, it is driven by framework 1 outer belt pulley, be hollow in the rotating shaft 7, inside and outside edge is all stepped, outer rim has two scrobicular rings of two scrobicular ring shapes and pedestal 2 inner edges to form two Oil Guide annular groove A0, B0, Oil Guide annular groove A0 links to each other with an oil guiding hole A1, has an oil guiding hole B1 and Oil Guide annular groove B0 to join with respect to rotating shaft 7 other sides.Otherwise hollow bulb can be put two directions sliding sleeve 10 mutually in the rotating shaft 7,11, the sliding sleeve outer rim is stepped, in be hollow, it is coniform that inner edge is, two sliding sleeves 10,11 the stepped outer rim and the ladder inner edge of rotating shaft 7 form several spaces, the annular piston 12 that just can hold two rightabouts in the space, 13 longitudinal sliding motions, two- piston 12,13 each and C shape ring 14,15 liang of sliding sleeves 10,11 respectively to overlap a direction opposite, and the collet chuck 17 in same axle center, it is conical that 18 outer rims are, with sliding sleeve 10, the taper seat of 11 inner edges fits, two collet chucks 17,18 conical outer rim is established several longitudinal opening lines of rabbet joint, make two collet chucks 17,18 peripheries are flexible, two collet chucks 17, retainer ring 420 is respectively arranged outside 18,430 is fixing, and retainer ring is fixed at again in two and covers 42 admittedly, on 43; Retainer ring is made collet chuck to tighten and the action of diastole only, and can displacement.

Please continue to consult Fig. 3 and cooperate Fig. 5, during oil guide pipe A oil-feed, fluid flows into P1 of grease chamber and S1 through oil guiding hole A1 again through Oil Guide annular groove A0, and oil liquid pressure just can promote sliding sleeve 10,11, two sliding sleeves also drive two- piston 12,13 and 14, the 15 past left and right sides longitudinal sliding motions of C shape ring, the collet chuck 17,18 of covers in two sliding sleeves 10,11 is because of the circular cone inclined-plane fits tightly, so when sliding sleeve 10,11 is done longitudinal sliding motion, just can tighten two collet chucks 17,18, collet chuck 17,18 is holding workpiece firmly just.When oil guide pipe B oil-feed, oil guide pipe A just stops oil-feed fluid through Oil Guide annular groove B0, flows into oil guiding hole B1, and enters P2 of grease chamber and S2, oil liquid pressure just pushes two- piston 12,13, two- piston 12,13 vertically moves reposition because of being clamped in two sliding sleeves 10,11 with two C shapes ring 14,15 to the left and right so piston 12,13 can drive two sliding sleeves 10,11, and the fluid of the P1 of grease chamber, S1 is squeezed back former oil guiding hole A1, by oil guide pipe A oil extraction, otherwise during oil guide pipe A oil-feed, just oil extraction of oil guide pipe B; After 10,11 repositions of two sliding sleeves, two collet chucks 17,18 lose the power of tightening, and its elastic force just makes two collet chucks restore to the original state.Again because of rotating shaft 7 is a rotor, the contact-making surface that itself and pedestal are 2 must have very narrow slit, so the fluid of rotating shaft 7 inside certainly will ooze out, enters the oil storage tank D0 in the base D via A2, B2 two oil ducts, flows back to oil pressure pump by oil return pipe 16.The advantage of being learnt the utility model by above-mentioned architectural feature is as follows:

1. clamping is firm: the utility model is the design of front and back bitubular folder, and bitubular folder is synchronization action, and does contacting of " face " with work, so workpiece is subjected to the power of clamping bigger.

2. the utility model quick oil feeding, two Oil Guide annular groove A0, B0 are communicated with and are respectively pushed away face, thus clamping with loosen rapid.

3. the utility model is because of the double fastener tube, so but the machining object of clamping one or two differences is done cutting simultaneously.

4. each element has oil sealing sealing, oil pressure oil can not leak, flow back to oil pressure pump by oil duct through oil return pipe, except that not dirty and user and outward appearance, more can not allow foreign object enter in the clipping base, for example oil sealing 31,33, can stop the mist of oil that is produced because of the high speed rotation, and still have minimum gap, infiltrate and have few fluid because of it, but still can flow into oil duct A2, B2 and enter oil return pipe by the oil exit pipe 310,330 that is attached thereto, can increase service life and precision.

5. can make big ratio of all sizes according to various uses, be applicable to the requirement of various machine-tools, various rotating speed.

Comprehensively above-mentioned, the taper seat inner edge that the utility model system utilizes the circular cone outer edge surface of collet chuck 17,18 to be subjected to sliding sleeve 10,11 slides and tightens collet chuck clamping work, and with the clamping simultaneously of bitubular folder, makes the chucking power multiplication of commonly using single collet chuck holding workpiece; And the design of Oil Guide annular groove A0, B0 makes sliding sleeve 10,11 and piston 12,13 promoted by oil pressure, and precision and service life are increased to ultimate attainment, and makes handling ease, the practical value of real tool industry.

Claims (1)

1, a kind of two-way chuck structure improvement is two collet-type of taper outer rim, it is characterized in that comprising:

One annular base body, in to be hollow and framework solid with two annular fixed cover spiros; Oilhole is arranged in the pedestal;

One annular rotating shaft, in be hollow, it is irregular stepped that interior outer rim all is, it has an end to stretch out in outside the framework, and is meshing with a hollow belt inner edge; Its stepped outer rim and pedestal inner edge can be established two bearings at a distance of suitable distance; The oil guiding hole that two relative positions are arranged in the rotating shaft, two Oil Guide annular grooves of connection rotating shaft outer rim recess and the formation of pedestal inner edge recess;

Two inner edges are the sliding sleeve of circular cone hollow, and it is irregular stepped that outer rim is, and form several spaces with the irregular stepped inner edge of two rotating shafts.

Two annular pistons, and two C shapes buttons is fastened in the space between rotating shaft and sliding sleeve, and be separated out several grease chambeies, fluid can flow into the grease chamber by oil guiding hole, and produces pressure;

Two collet chucks, outer rim are coniform, interior cylindrical hollow; The collet chuck body has several vertical open flume type breach, makes collet chuck tool elastic force;

By the element combination in above-mentioned each same axle center, two collet chucks promote because of two sliding sleeves are subjected to fluid, and are tightened by two sliding sleeves; Fluid pushes away slide block is retreated, and collet chuck blocks because of being subjected to stator, can be because of the elastic force diastole; Two oil guide pipes one vertically advance toward rightabout for oil-feed promotes two slide blocks, and one vertically returns original position for oil-feed promotes two sliding sleeves, and when an oil guide pipe oil-feed, another oil guide pipe is oil extraction; Two collet chucks are done simultaneously and are tightened and the action of diastole.

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