TWI663027B - Multi-purpose chuck - Google Patents

Abstract

A multi-purpose chuck includes a base, a top base, and a clip structure. The top base is coupled to the base and forms a receiving chamber between the top base and the base. The top base has a perforation, and the clip structure includes There is a shaft tube, at least one first clip member, at least one second clip member and a piston member, and the shaft tube is connected to the base or the top seat, and the multi-purpose collet is used for a rod to enter and exit through the perforation. The shaft tube is clamped by the first clamping member or the second clamping member and is clamped in the shaft tube, so that the multi-purpose chuck can use the first clamping member to squeeze the rod or use the second clamping member. The clamping member squeezes the tie rod, so that the tie rod is firmly engaged in the shaft tube.

Description

Multi-purpose chuck

The present invention relates to a collet; in particular, it relates to a multi-purpose collet.

The known processing jig field has a variety of structural types due to different processing methods and applications, and generally includes a tie rod and a collet, and the tie rod is detachably combined with the collet.

FIG. 1 shows a conventional collet 1 for a long tie rod, which includes a base 2, a top base 3, and a clip structure 4. The top base 3 is coupled to the base 2 and is formed between the base 2 and the base 2. An accommodation chamber S1; the top base 3 has an axial tube portion 5 communicating with the accommodation chamber S1, wherein the axial tube portion 5 has an annular surface 5a, and the annular surface 5a is provided with a plurality of side holes 5b at the same height, and the The shaft tube portion 5 is used to provide a long pull rod 6 for embedding. In addition, the base 2 and the top base 3 respectively have a pipeline 2a, 3a, and the two pipelines 2a, 3a are respectively used to communicate the accommodation chamber S1 and an exterior. Pressure source A1.

The clip structure 4 is disposed in the receiving chamber S1 and includes a plurality of balls 4a and a moving member 4b. The balls 4a are respectively disposed in a side hole 5b. When the long pull rod 6 is embedded in the shaft tube After the part 5, start the external pressure source A1 to make its fluid input through the pipeline 3a and then flow out from the pipeline 2a to control the moving part 4b to move downward. As shown in FIG. 2, the moving part 4b moving down will push against these The ball 4a moves toward the long tie rod 6, and the ball 4a partially falls into the ring groove 6a of the long tie rod 6, thereby pinching the long tie rod 6 so that the long tie rod 6 cannot be separated from the chuck 1.

Please refer to FIG. 3 again. When the shaft tube part 5 of the chuck 1 is embedded by a short tie rod 7, because the length of the short tie rod 7 is shorter than the length of the long tie rod 6, even if the moving member 4b is controlled to Move down, the ring groove 7a of the short tie rod 7 cannot be squeezed by the balls 4a. Therefore, the short tie rod 7 must be used with a special chuck. In other words, the long tie rod 6 and the short tie rod 7 each have Its dedicated chuck cannot be used for interoperability. For this reason, in response to processing requirements, processing manufacturers must usually have special chucks suitable for long drawbars 6 or short drawbars 7 so that they can be accessed at any time. However, this approach will increase the equipment manufacturer ’s equipment expenditures, and when the special chucks are used, When not in use, a corresponding space is also required for storage. As a result, when a processing manufacturer sets up a factory, a larger area of factory building must be set up to store the special chucks. In addition, when the personnel performs processing operations, if the special chucks of the long pull rod 6 and the short pull rod 7 must be used at the same time, the correct combination must be picked out, and the operation procedure is increased.

In view of this, the object of the present invention is to provide a multi-purpose chuck, which can be used with different lengths of pull rods.

In order to achieve the above object, a multi-purpose chuck system provided by the present invention can squeeze a pull rod, which includes: a base, a top seat and a clip structure, wherein the top seat is coupled to the base, and An accommodation chamber is formed between the base and the top seat. The top seat has a perforation to communicate with the accommodation chamber. The clamping structure is used to squeeze the part of the tie rod that extends into the accommodation chamber. The clamping structure includes a shaft tube. , At least one first clamp member, at least one second clamp member, and a piston member, the shaft tube is connected to the base or the top seat, and the pull rod enters and exits the shaft tube through the perforation, wherein the shaft tube There are at least one first through hole and at least one second through hole in the axial direction, the first through hole is closer to the base than the second through hole; the at least one first clamping member can pass through the first through hole The at least one second clamping member can pass through the second through hole; the piston member is located in the The receiving chamber is operated to move up and down between a first position and a second position, wherein the piston member in the first position pushes the first clamping member to squeeze the tie rod, and the second position The piston member pushes the second clamping member to pinch the tie rod.

The effect of the present invention is that the piston member at the first position pushes the first clamping member to squeeze the lever; the piston member at the second position pushes the second clamping member to squeeze the lever.

〔this invention〕

100‧‧‧Multi-purpose chuck

10‧‧‧ base

12‧‧‧ the first channel

20‧‧‧Top Block

22‧‧‧perforation

24‧‧‧Second Channel

30‧‧‧ Clip structure

32‧‧‧ shaft tube

322‧‧‧The first through hole

324‧‧‧Second Through Hole

34‧‧‧First clip

36‧‧‧Second Clip

38‧‧‧Piston

382‧‧‧Hollow shaft tube

382a‧‧‧first recess

382b‧‧‧Second Recess

382c‧‧‧First protrusion

382d‧‧‧ second protrusion

200‧‧‧long pull rod

300‧‧‧short pull rod

S1‧‧‧Capacity Room

A1‧‧‧External pressure source

S2‧‧‧Capacity Room

P1‧‧‧Open position

P2‧‧‧First position

P3‧‧‧Second position

W1‧‧‧first width

W2‧‧‧Second width

A2‧‧‧External pressure source

Figure 1 is a cross-sectional view of a conventional long tie rod chuck; Figure 2 is a schematic diagram showing that the long tie rod is squeezed by the conventional long tie rod chuck; Figure 3 is a schematic diagram showing a short tie rod inserted into the conventional long tie rod chuck 4 is a cross-sectional view of a multi-purpose chuck according to the first preferred embodiment of the present invention; FIG. 5 is a schematic diagram showing that a long tie rod is embedded in the multi-purpose chuck and the piston member is in an open position; FIG. 6 is a schematic diagram showing a multi-purpose chuck The chuck squeezes the long rod, and the piston is in the first position. Figure 7 is a schematic diagram showing that the long rod is moved out of the multi-purpose chuck and the piston is in the open position. Figure 8 is a schematic diagram that shows that the short rod is embedded in the multi-purpose type. Chuck, and the piston member is in the open position; FIG. 9 is a schematic diagram showing the multi-purpose chuck for squeezing the short pull rod, and the piston member is in the second position.

In order to explain the present invention more clearly, a preferred embodiment is described in detail below with reference to the drawings. Please refer to FIG. 4, a multi-purpose chuck 100 according to a preferred embodiment of the present invention is used to clamp a pull rod, which includes a base 10, a top base 20 and a clip structure 30, wherein the base 10 The top seat 20 is detachably combined with each other, and a container S2 is formed in the interior after the combination.

The base 10 is provided with at least one first channel 12. In this embodiment, the number of the first channels 12 is two, and one end of the first channel 12 is connected to an external pressure source A2, and the other end of the first channel 12 is connected to the container. The chamber S2, the external pressure source A2 may be a pressure formed by a gas or a liquid (such as oil).

The top base 20 has a perforation 22, which communicates with the accommodating chamber S2 and is used for being inserted into the accommodating chamber S2 by the pulling rod. The aforementioned pulling rod may be any one of a long pulling rod or a short pulling rod. The top base 20 has at least one second channel 24. In this embodiment, the number of the second channels 24 is two, one end is connected to an external pressure source A2, and the other end is connected to the chamber S2.

The clip structure 30 includes a shaft tube 32, at least one first clip member 34, at least one second clip member 36, and a piston member 38. In this embodiment, the first clip member 34 and the second clip The number of the detents 36 is plural.

The shaft tube 32 is located in the receiving chamber S2, and the shaft tube 32 has at least one first through hole 322 and at least one second through hole 324 in the axial direction, wherein the first through hole 322 is closer to the second through hole 324. At the base 10, in this embodiment, the number of the first through-holes 322 and the second through-holes 324 corresponds to the number of the first clamping members 34 and the second clamping members 36, respectively. The way of falling into the shaft tube 32 corresponds to the first through hole 322 and is movably located in the first through hole 322; the second clamp member 36 also corresponds to the second through hole 324 in a manner that does not fall into the shaft tube 32. It is arranged and movably located in the second through hole 324. The aforementioned manner of preventing the clip from falling into the inside of the shaft tube 32, for example, slightly reduces the diameter of the side of the through hole near the inside of the shaft tube 32, but still makes the clip The detent can protrude inside the shaft tube 32. In this embodiment, the shaft tube 32 is integrally connected to the base 10, and the first clamping member 34 and the second clamping member 36 are balls. In other embodiments, the shaft tube may be integrally connected to the top base 20, and the first clamp member and the second clamp member may be long pillars or other shapes.

The piston member 38 is located in the chamber S2 and has a hollow shaft tube portion 382. The hollow shaft tube portion 382 is sleeved on the outside of the shaft tube 32. Thus, when the gas or liquid output from the external pressure source A2 follows the passage, After entering the chamber S2, the piston member 38 is pushed up and down along the shaft tube 32. As shown in FIG. 4, the inner wall of the hollow shaft tube portion 382 has a first recessed portion 382 a, a second recessed portion 382 b, a first protruding portion 382 c, and a second protruding portion 382 d. The first recessed portion 382 a is larger than the second recessed portion 382 a. The recessed portion 382b is close to the base 10. The first recessed portion 382a has a first width W1 in the axial direction of the hollow shaft tube portion 382, and the second recessed portion 382b has a second width W2 in the axial direction of the hollow shaft tube portion 382, and the first width W1 is smaller than the second width W2. In addition, the first protrusion 382c is located between the upper edge of the first concave portion 382a and the lower edge of the second concave portion 382b; the second protrusion 382d is located on the upper edge of the second concave portion 382b. The structure can make the clamping structure 30 be controlled so as to clamp the portion of the long or short rods protruding into the shaft tube 32, and the long or short rods can be firmly detachably combined with the shaft tube 32.

In the following, the manner in which the multi-purpose chuck 100 of this embodiment clamps the long pull rod is described first.

FIG. 4 shows a state in which the long tie rod is not extended into the shaft tube 32. At this time, the piston member 38 is located in the open position P1, and at this time, the piston member 38 is farthest from the base 10, and the first clamp member 34 and the second clamp member The member 36 is retracted into the first concave portion 382a and the second concave portion 382b of the piston member 38, respectively. FIG. 5 shows a state in which the long tie rod 200 extends into the shaft tube 32 but the external pressure source A2 has not been activated.

Please cooperate with FIG. 6 to activate the external pressure source A2 so that the gas or liquid is input into the chamber S2 through the second channel 24, and the piston member 38 is pushed down to the first position P2. At this time, the gas or liquid below the piston member 38 will return to the external pressure source A2 from the first channel 12. In the foregoing, the first protrusion 382c of the hollow shaft tube portion 382 of the piston member 38 moving to the first position P2 will press the first clamp member 34 and pass a part of the first clamp member 34 through the first The hole 322 further squeezes the long tie rod 200 so that the long tie rod 200 is tightly engaged with the shaft tube 32. At the same time, since the second clamping member 36 is not squeezed by the second protrusion 382d, it will not be displaced and will be in a state where the long tie bar 200 is not clamped.

Please cooperate with FIG. 7 again. When the external pressure source A2 changes the flow direction of the gas or liquid, even if the gas or liquid is input from the first channel 12 to the chamber S2 and then returns to the external pressure source A2 from the second channel 24, the piston member 38 will return to the original open position P1, and the first clamping member 34 and the second clamping member 36 will also retract into the first concave portion 382a or the second concave portion 382b, respectively, and the long pull rod 200 can be smoothly separated from the chuck 100.

In the following, the manner in which the multi-purpose chuck 100 of this embodiment can be used to squeeze short pull rods is described later.

Please cooperate with FIG. 8 to show a state where the short tension rod 300 extends into the shaft tube 32 of the chuck 100 and the external pressure source A2 has not been activated.

Please cooperate with FIG. 9 to activate the external pressure source A2 so that the gas or liquid is input into the chamber S2 through the second channel 24 and push the piston member 38 down to the second position P3. At this time, the piston member 38 is below The gas or liquid will flow back from the first channel 12 to the external pressure source A2, and the piston member 38 is close to the base 10. In the foregoing, the second protrusion 382d of the hollow shaft tube portion 382 of the piston member 38 moving to the second position P3 will press the second clamp member 36 and pass a part of the second clamp member 36 through the second The hole 324 further squeezes the short tie rod 300 so that the short tie rod 300 is tightly engaged with the shaft tube 32. At the same time, although the first clamping member 34 is squeezed by the first protrusion 382c and partially passes through the first through hole 322, but because the length of the short tie rod 300 is not sufficient to be squeezed by the first clamping member 34, the first The clamping member 34 is in a state where the short tie rod 300 is not pinched.

The method of separating the short tie rod 300 from the chuck 100 is the same as that of the long tie rod 200 described above, and the piston member 38 is returned to the original open position P1 by changing the flow direction of the gas or liquid driven by the external pressure source A2. A clip member 34 and a second clip member 36 are retracted into the first recessed portion 382a or the second recessed portion 382b, respectively, and the short pull rod 300 can be smoothly separated from the collet 100.

In summary, when a user uses a multi-purpose chuck for processing operations, it can reduce the problems of selecting the correct combination and assembly for the conventional chucks that have been used in the past, and increase the operation procedures and increase the operation time. At the same time, due to the multi-purpose nature of the multi-purpose chuck, the storage space for conventional chucks can be reduced.

The above descriptions are only the preferred and feasible embodiments of the present invention, and any equivalent changes made by applying the description of the present invention and the scope of patent application should be included in the patent scope of the present invention.

Claims (6)

The utility model relates to a multi-purpose chuck, which can squeeze a pull rod, and comprises: a base; a top seat, which is coupled to the base and forms a containing chamber with the base, and the top seat has a perforated communication with the capacity. A clip structure used to squeeze the portion of the pull rod that extends into the receptacle; characterized in that the clip structure includes: a shaft tube connected to the base or the top seat, and the pull rod passes through the perforation and Entering and exiting the shaft tube, wherein the shaft tube has at least a first through hole and at least a second through hole in the axial direction, the first through hole is closer to the base than the second through hole; at least one first clamping member Can pass through the first through hole; at least one second clamping member can pass through the second through hole; and a piston member is located in the receiving chamber and is operated in a first position and a second It moves up and down between positions, wherein the piston member in the first position pushes the first clamping member to pinch the tie rod, and the piston member in the second position pushes the second clamping member to pinch the tie rod. The multi-purpose chuck according to claim 1, wherein the piston member has a hollow shaft tube portion sleeved outside the shaft tube so that the piston member can move up and down along the shaft tube, and the hollow shaft tube portion The inner wall has at least a first recessed portion and at least a second recessed portion; wherein the piston member is further operable to move to an open position, so that the first clamping member and the second clamping member are retracted into corresponding ones. The first concave portion and the second concave portion, and the tie rod can enter and exit the shaft tube. The chuck according to claim 2, wherein the first recessed portion is closer to the base than the second recessed portion, and the first recessed portion has a first width in the axial direction of the hollow shaft tube portion, and the second recessed portion The hollow shaft tube portion has a second width in the axial direction, wherein the first width is smaller than the second width. The multi-purpose chuck according to claim 3, wherein the piston member has a first protrusion located at an upper edge of the first recessed portion, and a second protrusion located at an upper edge of the second recessed portion; wherein the first A protrusion pushes the first clamp member when the piston member is in the first position, and the second protrusion pushes the second clamp member when the piston member is in the second position. The multi-purpose chuck according to any one of claims 2 to 4, wherein the piston member in the second position is closest to the base, and the piston member in the open position is farthest from the base. The multi-purpose chuck according to claim 5, wherein the base is provided with at least a first channel, the top seat is provided with at least a second channel, the first channel and the second channel are connected to an external pressure source, and the external The fluid output by the pressure source enters the chamber through the first passage or the second passage, and the fluid pushes the piston member up and down.