TWI595949B - With double the life of the empty hydraulic chuck - Google Patents

Description

Air hydraulic chuck with twice the service life

The present invention relates to a lathe chuck, and more particularly to an air hydraulic chuck.

The conventional lathe chuck mainly comprises a body, the body has a shaft hole and three sliding slots arranged radially around the shaft hole, wherein the shaft hole of the body is accommodated by a transmission mechanism, and the body is Each chute can be accommodated in a fixture. Each of the clamps is reciprocally movable in the radial direction of the body in each of the chutes by the transmission of the transmission mechanism for clamping the workpiece to be processed.

Each of the above-mentioned jigs may be in frictional contact with the surface of each chute provided in the body during the sliding process of each chute to generate wear. Once the shape of each chute of the main body is deformed by wear, it is impossible for each jig to be firmly fixed. When it is installed therein, it will cause the clamps to be in an unstable clamping state for the workpiece, thereby affecting the machining operation and machining accuracy of the workpiece. At this time, the user only has to replace the main body and the clamps with new ones. In order to maintain the normal workpiece clamping operation of the lathe chuck, it is quite time consuming and costly. Therefore, how to continue the service life of the above lathe chuck to reduce the replacement cost has been a problem that the operator wants to solve.

Accordingly, it is an object of the present invention to provide an air hydraulic collet having a double service life.

Thus, the present invention has an air hydraulic chuck having twice the service life, comprising a body, a tilting member, and a plurality of clamps.

The body includes a shaft hole, a plurality of first sliding slots respectively communicating with the shaft holes, and a plurality of second sliding slots respectively communicating with the shaft holes. The shaft hole is located in the center of the body and axially extends through opposite sides of the body. The first chute and the second chute are located on the same side of the body and extend radially outward from the shaft hole. The first chutes and the second chutes are staggered around the shaft hole. The number of the first chutes is the same as the number of the second chutes.

The swaying member is axially movably disposed on the shaft hole of the body.

The number of such clamps is the same as the number of the first chutes. The clamps are respectively slidably disposed on the first sliding slots and are respectively connected to the swaying members.

Wherein, when the swaying member reciprocates along the axial direction of the body, the swaying member simultaneously pulsates the clamps to reciprocate along the radial direction of the body.

When the clamps repeatedly slide back and forth to contact the surfaces of the first sliding grooves provided in the body, so that the first sliding grooves are worn and deformed, the clamps can be replaced with new ones, and The new clamps are respectively installed in the spare second chutes and respectively connected to the swaying members, thereby achieving the effect of improving the life of two times.

The effect of the present invention is that the same number of second chutes are added to the main body, and the shape of each of the first chutes of the main body is deformed by abrasion, and the jig cannot be stably disposed on the jig. In order to firmly hold the workpiece, the user only has to replace all the fixtures into new ones, and the new ones are respectively installed in the spare second chutes and connected to the mooring members. Thereby, the body is doubled to a service life and the clamps can firmly hold the workpiece, thereby effectively shortening the replacement time and reducing the replacement cost.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , an embodiment of an air hydraulic collet having twice the service life of the present invention comprises a body 1 , a tilting member 2 , a third clamping device 3 , and a third dustproof block 4 . And a dust cover 5.

The body 1 has a flat cylindrical shape. The body 1 includes a shaft hole 10, three first sliding slots 11, and three second sliding slots 12. The shaft hole 10 is located at the center of the body 1 and axially penetrates opposite sides of the body 1. The first sliding slots 11 and the second sliding slots 12 are located on the same side of the body 1 and extend radially outward from the shaft hole 10 to the outer circumferential surface of the body 1 . The first chutes 11 and the second chutes 12 are staggered around the shaft hole 10.

The swaying member 2 is axially movably mounted in the shaft hole 10 of the body 1 and coupled to a working machine (not shown). The swaying member 2 is driven in the shaft hole 10 of the body 1 to be axially reciprocated relative to the body 1 by the control of the working machine. The swaying member 2 has a flat cylindrical shape and has an axial center portion 21 and six pulsating portions 22 circumferentially spaced apart from each other on the outer circumferential surface of the axial center portion 21. Each of the swaying portions 22 is formed with an oblique pushing surface group 220 adjacent to the two adjacent cocking portions 22, respectively. Each of the inclined push surface groups 220 has a first inclined surface 221 and a second inclined surface 222 spaced apart from each other along the radial direction of the body 1.

The clamps 3 are respectively slidably disposed on the first sliding slots 11 , and each of the clamps 3 includes a claw seat 31 and a clamping jaw 32 . Each of the claw seats 31 is mounted in each of the first sliding slots 11 and has a driven portion 33 connected to the tilting member 2, so that each of the claw seats 31 can be driven by the tilting member 2 to be driven by the tilting member 2 The respective first chutes 11 of the body 1 reciprocate.

Each of the beveled portions 33 is located between two adjacent ones of the tilting portions 22 and has two oblique guiding surface groups 330 respectively abutting the inclined pushing surface groups 220 corresponding to the two moving portions 22. Each of the oblique guiding surface groups 330 has a first oblique guiding surface 331 opposite to the corresponding oblique pushing surface group 220 and a first oblique guiding surface 331 and a second Oblique guide surface 332. When the inclined guiding surface groups 330 are respectively engaged with the inclined pressing surface groups 220 such that the tilting members 2 reciprocate along the axial direction of the body 1, the claw seats 31 can be simultaneously received by the tilting members 2 The tire reciprocates along the radial direction of the body 1.

Each jaw 32 is positionally lockable to the top surface of each of the jaws 31 along the radial direction of the body 1 to be movable with the jaws 31. The top surface of each of the claw blocks 31 is formed with an upper dentition structure 311 extending in the radial direction of the body 1. The bottom surface of each of the jaws 32 is formed with an upper dentition structure which can be combined with the respective jaws 32. 311 phase toothed lower tooth row structure 321 . Each of the jaws 32 is coupled to the upper dentition structure 311 of the corresponding claw seat 31 through the lower dentition structure 321 to be connected to the two, so that the position and positioning can be easily adjusted to facilitate the locking operation.

The dustproof blocks 4 are detachably embedded in the second sliding slots 12 of the body 1 to prevent dust or debris generated during the processing of the workpiece from being accumulated in the second sliding slots 12.

The dust cover 5 is detachably locked to the side of the body 1 having the first sliding slot 11 and the second sliding slot 12, and the cover covers one end of the shaft hole 10 of the body 1 to avoid Dust or workpiece generated during machining of the workpiece enters the shaft hole 10 of the body 1 to affect the actuation of the ram 2 or other members or cause damage to the ram 2 or other members.

After the air hydraulic chucks are used for a period of time, the clamps 3 are in contact with the surfaces of the first sliding slots 11 provided in the body 1 during the sliding of the first sliding slots 11 of the body 1. The friction causes abrasion, and once the shape of each of the first sliding grooves 11 of the body 1 is deformed by abrasion, and the clamps 3 cannot be stably disposed therein, the clamps 3 are unstable to the workpiece. Holding the state, which in turn affects the machining operation and the machining accuracy of the workpiece, at this time, the user only has to replace all the clamps 3 into new ones, and the dust-proof blocks 4 respectively embedded in the second chutes 12 are unloaded. Then, the new clamps 3 are respectively installed in the spare second chutes 12 and connected to the swaying member 2, and finally the removed dustproof blocks 4 are respectively embedded in the first slippery The groove 11 is configured to prevent dust or the chips generated during the processing of the workpiece from accumulating in the first sliding grooves 11, thereby increasing the life of the body 1 to twice and allowing the clamps 3 to firmly hold the workpiece. In order to effectively shorten the replacement time and reduce the replacement cost, it is indeed possible to achieve this issue. Purposes.

It is worth mentioning that the embodiment of the present invention discloses an air hydraulic chuck in the form of a three-claw, but not limited thereto, and may also be an air hydraulic chuck in the form of a two-claw as shown in FIG. That is, the number of the first sliding slot 11 and the second sliding slot 12 of the main body 1 is two, so that the two clamps 3 are respectively installed and installed.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧ Ontology

10‧‧‧ shaft hole

11‧‧‧First chute

12‧‧‧Second chute

2‧‧‧掣动

21‧‧‧Axis

22‧‧‧掣部

31‧‧‧ claw seat

311‧‧‧Upper dentition structure

32‧‧‧claw

321‧‧‧ Lower dentition structure

33‧‧‧Being the Ministry of Immobilization

330‧‧‧ oblique guide group

331‧‧‧First oblique guide

220‧‧‧ oblique push surface group

221‧‧‧First oblique push surface

222‧‧‧Second oblique push surface

3‧‧‧Clamp

332‧‧‧Second oblique guide

4‧‧‧Dust block

5‧‧‧Dust cover

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a perspective view of an embodiment of an air hydraulic collet having twice the service life of the present invention; 3 is an exploded perspective view of the embodiment; FIG. 3 is a perspective view of a combination of a tilting member and a claw of the clamp; FIG. 4 is a cross-sectional view of the embodiment. The combination of the components; and Fig. 5 is an air hydraulic chuck in the form of a two-jaw embodiment.

1‧‧‧ Ontology

11‧‧‧First chute

12‧‧‧Second chute

3‧‧‧Clamp

31‧‧‧ claw seat

311‧‧‧Upper dentition structure

32‧‧‧claw

321‧‧‧ Lower dentition structure

4‧‧‧Dust block

5‧‧‧Dust cover

Claims (9)

An air hydraulic chuck having twice the service life comprises: a body comprising a shaft hole, a plurality of first sliding slots respectively communicating with the shaft holes, and a plurality of second sliding slots respectively communicating with the shaft holes, the shaft holes Located at the center of the body and axially extending through opposite sides of the body, the first sliding slots and the second sliding slots are located on the same side of the body, and extend radially outward from the shaft holes, and the like The first chute and the second chute are staggered around the shaft hole, and the number of the first chutes is the same as the number of the second chutes; a tilting member is axially movable The shaft hole of the main body; and the plurality of clamps, the number of which is the same as the number of the first sliding slots, the clamps are respectively slidably disposed on the first sliding slots, and are respectively connected to the tilting member; When the moving member reciprocates along the axial direction of the body, the swaying member simultaneously moves the clamps to reciprocate along the radial direction of the body; when the clamps repeatedly reciprocate and slide to contact the first ones disposed in the body The surface of the chute, causing the first chute to be worn and deformed, The other new clip into all deprecated, and the clamps are mounted such new such second slot and connected to a backup to the detent member, thereby to achieve an effect of improving the use life times. The air hydraulic chuck having twice the service life as claimed in claim 1 further comprises a plurality of dustproof blocks respectively removably embedded in the second sliding slots. The air hydraulic collet of claim 2, further comprising a dust cover disposed on the side of the body having the first chute and the second chute, and A cover covers one end of the shaft hole of the body. An air hydraulic collet having a double service life as claimed in claim 1 or 3, wherein the raking member has an axial portion and a plurality of pulsating portions disposed around the outer peripheral surface of the axial portion. Each of the swaying portions is respectively formed with a slanting surface group adjacent to the two adjacent swaying portions, and each of the clamps includes a swaying portion connecting the swaying members, wherein each of the cocking portions is located in the cocking portion Between two adjacent persons, and having two oblique guiding surface groups respectively abutting the oblique pushing surface groups corresponding to the two moving portions. An air hydraulic collet having a service life of twice as claimed in claim 4, wherein each of the oblique push surface groups has a first oblique pushing surface spaced apart from each other along the radial direction of the body and a first a second oblique pushing surface, each oblique guiding surface group having oppositely disposed and respectively corresponding to the first oblique pushing surface of the corresponding oblique pushing surface group and a first oblique guiding surface of the second inclined pushing surface and a second Oblique guide surface. An air hydraulic collet having a service life of twice as claimed in claim 5, wherein each of the clamps further includes a claw seat and a jaw, each of the claw seats being mounted in each of the first chutes There are respective driven portions, each of which can be locked to the top surface of each of the jaws along the radial adjustment position of the body to be movable with the claw. An air hydraulic collet having a service life of twice as claimed in claim 6, wherein the top surface of each of the claws is formed with an upper dentition structure extending in a radial direction of the body, each of the jaws The bottom surface unevenness is formed with a lower tooth row structure that can be engaged with the upper tooth row structure of each of the jaws. An air hydraulic collet having twice the service life as claimed in claim 1, wherein the number of the first chutes of the body is three. An air hydraulic collet having twice the service life as claimed in claim 1, wherein the number of the first chutes of the body is two.