TWM606818U - Improved chuck structure - Google Patents

Abstract

This creation provides a chuck with improved structure, which includes a main body, a transmission shaft, a rotating member, and a clamping member. The main body has a chamber and a limiting part in the middle section; the transmission shaft is arranged in the chamber It has a guiding part that can be movably connected to the limit part, and the limit part restricts the transmission shaft from rotating in the chamber; the rotating part is arranged on the outer periphery of the body, and has a second driving part that can be connected in transmission The first driving part and the second driving part are linked with the first driving part as the rotating member rotates relative to the main body, so as to drive the transmission shaft to move linearly only along the axial direction of the main body; the clamping part is arranged on the transmission shaft different from the guide part The position is set, and it is linearly displaced in conjunction with the transmission shaft, so that an object can be clamped or loosened through the clamping piece, thereby constituting the creation.

Description

Chuck with improved structure

This creation is about a tool chuck, especially a chuck with improved structure.

According to Taiwan Patent Announcement No. M440169, it is a "multi-purpose tool chuck", which mainly exposes the main components such as the connecting seat, the ball seat and the clamping jaw assembly. By filling a plurality of balls into the connecting seat and the ball of the ball seat In the groove, a plurality of balls are used to form a structure similar to a bearing, and the clamping jaw assembly radially condenses or expands and separates through the plurality of clamping jaws to clamp an external tool.

The ball grooves of the connecting seat and the ball seat are filled with balls and can have a bearing-like function. In order to make the connecting seat and the ball seat rotate smoothly, the relative positions of the ball grooves of the connecting seat and the ball seat must be quite accurate , And the ball groove must also have considerable precision in order to align and cover the balls. However, in practical operation, it is found that the chuck has a large number of components, especially the ball groove and the number of balls. If the machining accuracy or assembly deviation is not good, the relative position of the ball groove will be inaccurate and the ball groove The problem of poor precision can easily cause both the connecting seat and the ball seat to not rotate smoothly, or even jam and malfunction.

In order to solve the above problems, this creation provides a chuck with improved structure. Through a simplified transmission structure, the chuck can achieve the function of holding objects.

An embodiment of the present invention provides a chuck with improved structure, which includes a body, a transmission shaft, a rotating member, and a clamping member. The inside of the body is hollow with a chamber and a limiting part in the middle section; the transmission shaft is arranged in the chamber and has a guiding part movably connected to the limiting part, and the limiting part restricts the transmission shaft in The chamber cannot be rotated, and the transmission shaft has a first driving part in the guiding part exposed outside the body; the rotating member is relatively rotatably arranged on the outer periphery of the body, and has a second driving part in the middle section of the body to drively connect the first A driving part, the second driving part is linked with the first driving part as the rotating part rotates relative to the main body, so as to drive the transmission shaft to move linearly only along the axial direction of the main body; the clamping part is arranged at a place where the transmission shaft is different from the guide part Set the position and move linearly with the transmission shaft, so that an object can be clamped or loosened by passing through the clamping piece.

As a result, the chuck with improved structure in this creation does not need to have a bearing-like arrangement through the ball, only a limit part is provided on the body, and the drive shaft is matched with the limit part to provide a guide part and a rotating part The first and second driving parts are connected to the transmission shaft in a transmission manner. The simplified structure can drive the clamp to clamp or loosen the object. Therefore, it has the convenience of simple components and easy assembly Performance, and can still maintain a certain accuracy under durable use and not easy to malfunction and damage.

In order to facilitate the description of the central idea of the creation in the column of the above-mentioned new content, specific examples are used to express it. The various objects in the embodiments are drawn in proportions suitable for enumeration and description, rather than the proportions of actual components, and are described first.

Please refer to Figures 1-9. This creation provides a chuck 100 with improved structure. In the following embodiments, the object to be clamped is a copper rod used for electrical discharge machining, but the chuck of this creation The objects held by 100 are not limited to this. For example, general processing tools are also within the scope of this creation. As shown in Figures 1 to 5, it is a first embodiment of a chuck 100, which includes a body 10, a transmission shaft 20, a rotating member 30, and a clamping member 40, wherein:

The body 10 has a hollow interior with a chamber 11 and a limiting portion in the middle section 12. The limiting portion is a plurality of grooves 13 in this embodiment, and these grooves 13 are all formed by the main body 10 expanding from the chamber 11 in the radial direction. In addition, the chamber 11 in this embodiment penetrates the body 10 in the axial direction X (as shown in FIG. 1), and the body 10 is slightly recessed in the middle section 12, and the body 10 has a The upper part 14 has a joint 15 on the top side of the upper part 14 and the upper part 14 also has a button hole 16 for hooking tools; the other side of the middle section 12 has a lower part 17. In this embodiment, the body 10 is fixedly connected to a front sleeve 18 at one end of the clamping member 40. The inner circumference of the front sleeve 18 has an inner cone 181 (as shown in FIG. 3). The clamping member 40 is positioned In the front sleeve 18, one end of the clamping member 40 is exposed outside the front sleeve 18.

The transmission shaft 20 is arranged in the accommodation chamber 11. The transmission shaft 20 has a guiding part, and the guiding part is movably connected to the aforementioned limit part to restrict the transmission shaft 20 in the accommodation chamber. Can not rotate in 11. In addition, the transmission shaft 20 has a first driving part exposed from the main body 10 at the aforementioned guiding part. In this embodiment, the guiding portion is a plurality of convex portions 21, and the plurality of convex portions 21 are provided corresponding to the plurality of grooves 13, and each convex portion 21 is movably provided in the corresponding groove 13 with a corresponding contour. In this embodiment, the outline of each convex portion 21 is generally a rectangular block, and the groove 13 is also a rectangular groove. Preferably, the number of the plurality of grooves 13 is three, and the grooves 13 are arranged at equal angles at 120 degrees apart; the number of the plurality of convex portions 21 is also three, and the convex sections 21 are also at equal angles separated by 120 degrees. Set up.

The rotating member 30 is arranged on the outer circumference of the main body 10, and the rotating member 30 can rotate relative to the main body 10. The rotating member 30 has a second driving part. The second driving part is driveably connected to the first driving part in the middle section 12 of the main body 10, and the second driving part rotates with the rotating member 30 relative to the main body 10. Furthermore, the first driving part is linked to drive the transmission shaft 20 to move linearly only along the axial direction X of the main body 10. In this embodiment, the first driving part is an external thread part 211 provided on the outer circumference of the plurality of convex parts 21, and the second driving part is an internal thread part 31 provided on the inner circumference of the rotating member 30, and The threaded portion 211 and the female threaded portion 31 are driveably connected by screwing.

On the other hand, the rotating member 30 includes a ring body 32, the ring body 32 has an internal thread portion 31, the ring body 32 is embedded in the rotating member 30, and the ring body 32 is set at the position where the rotating member 30 is embedded. It is tight, so when the rotating member 30 rotates, the ring body 32 is linked with the rotating member 30. Preferably, the ring body 32 is formed by butting two separate halves 321, which correspond to the middle section 12 of the aforementioned body 10 slightly recessed (as shown in FIG. 2), so that the ring body 32 can follow the rotating member 30. It is provided on the outer periphery of the main body 10, so the two halves 321 are first abutted to the middle section 12 of the main body 10, and then the ring body 32 composed of the two halves 321 is inserted and tightly fixed by the rotating member 30.

The clamping member 40 is arranged on the transmission shaft 20, and is located at a position where the transmission shaft 20 is different from the convex portion 21, and the clamping member 40 is linked with the transmission shaft 20, so the clamping member 40 will follow The drive shaft 20 moves linearly so that the object can be clamped or loosened by passing through the clamping member 40. In this embodiment, the clamping member 40 is a collet, which has a through hole 41 and a plurality of slits 42 to form a plurality of clamping blocks 43, and the clamping member 40 has an internal thread portion 44, and the internal thread portion 44 The position on the clamping piece 40 is different from the plural clamping blocks 43; the transmission shaft 20 has an external thread portion 22, and the position of the thread portion 22 on the transmission shaft 20 is different from the convex portion 21, within the clamping piece 40 The threaded portion 44 is locked to the external threaded portion 22 to securely connect the clamping member 40 with the transmission shaft 20. Therefore, when the rotating member 30 rotates and drives the transmission shaft 20 to move linearly, the plurality of clamping blocks 43 will be received in the front sleeve 18 The guidance of the cone 181 allows the clamping block 43 to contract and clamp the object, or to expand the clamping block 43 to loosen the object.

In this embodiment, a stop ring 50 is included. The stop ring 50 is arranged between the main body 10 and the transmission shaft 20. The stop ring 50 is leaned against an end surface 182 of the front sleeve 18 with a first ring side 51. In addition, the retaining ring 50 faces the convex portion 21 with a second ring side 52, and there is a distance between the second ring side 52 and the convex portion 21 in a normal state. The distance between the second ring side 52 and the convex portion 21 can be a straight line along the axial direction X of the main body 10. The stroke of the displacement. In other words, the retaining ring 50 is arranged between the main body 10 and the transmission shaft 20, mainly because when the transmission shaft 20 is linearly displaced along the axial direction X of the main body 10, it can be formed by the second ring side 52 of the retaining ring 50 to the convex portion 21 Blocking and avoiding the screwing member 30 from leaving the screwed state between the external threaded portion 211 and the internal threaded portion 31 due to over-rotation.

When the chuck 100 of the above embodiment is actually used, the copper rod 60 used for electrical discharge machining is passed through the chuck 100 to pass through the main body 10 and the transmission shaft 20 respectively, and then pass through the perforation 41 of the clamping member 40. Then, by rotating the rotating member 30, the convex portion 21 is restricted in the groove 13 to allow the transmission shaft 20 to move upward in a straight line. At this time, the clamping member 40 and the transmission shaft 20 are connected and move upward accordingly, and the clamping block 43 is compressed due to the guidance of the inner taper portion 181 of the front sleeve 18, and the copper rod 60 can be clamped by the clamping block 43 (as shown in FIG. 4) for electrical discharge machining. When the copper rod 60 is shortened due to consumption during the electrical discharge machining operation, at this time, the rotating member 30 can be rotated in the reverse direction, and the convex portion 21 is restricted in the groove 13 so that the transmission shaft 20 moves downward in a straight line. The piece 40 communicates with the drive shaft 20 and moves down accordingly. The clamping block 43 is guided by the inner cone 181 of the front sleeve 18 to expand, so that the clamping block 43 can loosen the copper rod 60 (as shown in Figure 5). ) To adjust the length of the copper rod 60 or replace the copper rod 60 with a new one.

From the above description, it is not difficult to find that the advantage of this creation is that the chuck 100 with improved structure is compared with the conventional chuck with similar bearing arrangement through balls, because the chuck 100 of this creation is only The body 10 is provided with a limiting portion (such as the aforementioned groove 13), and the transmission shaft 20 is provided with a guiding portion (such as the aforementioned convex portion 21) in cooperation with the limiting portion, and there is a second section between the transmission shaft 20 and the rotating member 30 The first and second driving parts (such as the aforementioned external threaded part 211 and internal threaded part 31) are driveably connected. It can be seen that the drive shaft 20 and the rotating member 30 of this invention have a fairly simplified structure, which can drive the clamping member 40 to the object. (Such as the aforementioned copper rod 60) for clamping or unclamping. The chuck 100 of the present invention has simple components and is easy to assemble. It can also maintain a certain accuracy, and can be used for a long time and is not easy to be damaged. .

Of course, there are still many examples of the present invention, and only the details are changed. Please refer to Figures 6-9, which is the second embodiment of the present invention. In this embodiment, the chuck 100 includes a main body 10, a transmission shaft 20, a rotating member 30, and a clamping member 70, and The main difference of an embodiment is that the clamping member 70 of this embodiment includes a claw base 71 and a plurality of claw blocks 72. The claw base 71 has a coupling portion 711, whereby the coupling portion 711 is fixedly connected to one end of the body 10, The portion 711 is hereby tightly fixed to the lower portion 17 of the main body 10, and the coupling portion 711 also has the function of blocking the convex portion 21 by the blocking ring 50 (as shown in FIG. 8). The claw seat 71 is also provided with a plurality of guide grooves 712, the transmission shaft 20 is inserted into the claw seat 71, and the transmission shaft 20 of this embodiment has a plurality of sliding grooves 23 at one end, and each claw block 72 is provided with a sliding groove corresponding to one end 23 and correspondingly located in a guide groove 712 (as shown in Figures 8 and 9). The chuck 100 of the present embodiment, when the rotating member 30 rotates to drive the transmission shaft 20 to move linearly, is guided by the plurality of claw blocks 72 to retract or expand under the guidance of the inner cone 181, which can be similar to the first embodiment The copper rod 60 is clamped or loosened to achieve the same effect as the first embodiment.

The above-mentioned embodiments are only used to illustrate the creation, not to limit the scope of the creation. All modifications or changes that do not violate the spirit of this creation belong to the scope of this creation.

100: Chuck 10: body 11: Room 12: Middle section 13: Groove 14: Upper 15: Connector 16: button hole 17: lower part 18: Front cover 181: inner cone 182: end face 20: drive shaft 21: Convex 211: External thread 22: External thread 23: slippery ditch 30: Rotating part 31: Internal thread 32: ring body 321: half 40: clamp 41: Piercing 42: cut groove 43: clamp block 44: Internal thread 50: retaining ring 51: First ring side 52: second ring side 60: copper rod 70: clamp 71: claw seat 711: Joint 712: guide groove 72: claw block X: axial

Figure 1 is a perspective view of the chuck of the first embodiment of the creation. Figure 2 is an exploded configuration diagram of the chuck of the first embodiment of the creation. Figure 3 is a cross-sectional view of Figure 1 as seen from the line 3-3 Fig. 4 is a schematic diagram of the chuck of the first embodiment of the creation that clamps the copper rod with the clamping member. Figure 5 is a schematic diagram of the chuck of the first embodiment of the creation of the copper rod loosened by the clamping member. Figure 6 is a perspective view of the chuck according to the second embodiment of the creation. Fig. 7 is an exploded configuration diagram of the chuck of the second embodiment of the creation. Figure 8 is a cross-sectional view of Figure 6 as seen from the line 8-8 Fig. 9 is a cross-sectional view of Fig. 8 as seen along the line 9-9.

100: Chuck

10: body

11: Room

12: Middle section

13: Groove

14: Upper

15: Connector

16: button hole

17: lower part

18: Front cover

182: end face

20: drive shaft

21: Convex

211: External thread

22: External thread

30: Rotating part

31: Internal thread

32: ring body

321: half

40: clamp

41: Piercing

42: cut groove

43: clamp block

44: Internal thread

50: retaining ring

51: First ring side

52: second ring side

Claims (10)

A chuck with improved structure, comprising: A body, the interior of which is hollow and has a chamber, and has a limiting part in the middle section; A transmission shaft is arranged in the accommodation chamber and has a guiding part movably connected to the limiting part. The limiting part restricts the transmission shaft from rotating in the accommodation chamber. The guiding part has a first driving part exposed outside the body; A rotating member, which is relatively rotatably arranged on the outer periphery of the body, and has a second driving part in the middle section of the body that is driveably connected to the first driving part, and the second driving part follows the rotating member relative to the first driving part. The main body rotates to link the first driving portion to drive the transmission shaft to move linearly only along the axial direction of the main body; and A clamping piece, which is arranged at a position different from the guiding part of the transmission shaft, and is linked with the transmission shaft and linearly displaced accordingly, so that an object can be clamped or loosened by passing through the clamping piece open. The chuck with improved structure according to claim 1, wherein the limiting portion is a plurality of grooves, and the plurality of grooves are formed by expanding the body from the chamber in a radial direction; the guiding portion is aligned A plurality of convex parts should be provided with a plurality of grooves, and each convex part is movably arranged in the corresponding groove with a corresponding contour. The chuck with improved structure according to claim 2, wherein the number of the plurality of grooves and the plurality of protrusions are all three, and they are all arranged at an equal angle with an interval of 120 degrees. The chuck with improved structure according to claim 2, wherein the first driving portion is an external thread portion provided on the outer circumference of the plurality of convex portions, and the second driving portion is provided on the inner circumference of the rotating member An internal threaded portion is provided, and the external threaded portion and the internal threaded portion are screwed together to be driveably connected. The chuck with improved structure according to claim 4, wherein the rotating member includes a ring body, the ring body is embedded in the rotating member to be pressed and linked, and the ring body has the second driving part. The chuck with improved structure according to claim 5, wherein the ring system is formed by butting two separate halves. The chuck with improved structure according to claim 1, wherein the body is fixedly connected with a front sleeve at one end of the clamping member, the inner periphery of the front sleeve has an inner cone, and the clamping member is located Inside the front sleeve and one end is exposed on the front sleeve. The chuck with improved structure according to claim 7, wherein the clamping member is a collet with a perforation, and has a plurality of slits to form a plurality of clamping blocks, and the clamping member has a position different from the plurality The internal threaded part of the clamping block, the transmission shaft has an external threaded part whose position is different from the guiding part, the clamping piece is fixed to the external threaded part by the internal threaded part to be fixedly connected with the transmission shaft, the When the rotating member rotates to drive the transmission shaft to move linearly, the plurality of clamping blocks are guided by the inner cone to shrink or expand. The chuck with improved structure according to claim 7, wherein the clamping member includes a claw base and a plurality of claw blocks, the claw base has a coupling part fixed to one end of the body, and the claw base is provided with a plurality of guides The drive shaft penetrates the claw seat and has a plurality of sliding grooves at one end. Each claw block has one end corresponding to the sliding groove and corresponding to the guide groove. The rotating member rotates to drive the transmission When the shaft is linearly displaced, the plurality of claw blocks are guided by the inner cone to shrink or expand. The chuck with improved structure according to claim 7, wherein a retaining ring is provided between the body and the transmission shaft, and the retaining ring is abutted against an end surface of the front sleeve with a first ring side, and The retaining ring faces the guiding portion with a second ring side, and there is a distance between the second ring side and the guiding portion normally, and the distance is the stroke that the transmission shaft can move linearly along the axial direction of the body .

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