CN212329677U

CN212329677U - Clamping head

Info

Publication number: CN212329677U
Application number: CN202020627438.3U
Authority: CN
Inventors: 王松筠
Original assignee: Chandox Precision Industrial Co ltd
Current assignee: Chandox Precision Industrial Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-01-12
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a chuck, it includes a body, and the body has a shaft hole and two at least relative shaft holes and is the spout of radial arrangement, sets up an anchor clamps in each spout. Furthermore, the utility model discloses a chuck more includes a shield, two at least dust guards and a clamp plate, and the shield is located the one end in body and shroud shaft hole, and these shield butts just respectively with its one end coupling fixture in the shield, and the clamp plate butt is in these shield, so can ensure these shield and follow the in-process that these anchor clamps removed, and the clearance of shield and shield can be by big diminishing, reachs gapless situation even, thereby further promotes dustproof effect.

Description

Clamping head

Technical Field

The utility model relates to a chuck especially indicates a chuck that can promote dustproof effect.

Background

A typical chuck includes a body having an axial bore for receiving a driving mechanism (e.g., a pull rod) and at least two slide slots for receiving a clamp. Therefore, the clamp can be driven by the transmission mechanism to move back and forth along the sliding groove so as to clamp the workpiece to be processed.

However, during the machining process, the workpiece generates many cutting chips, which easily flow into the sliding groove along with the cutting fluid and are accumulated therein to generate rust gradually, so that the friction between the clamp and the sliding groove is increased, and thus, the clamp is influenced by the friction when moving in the sliding groove to generate a reduction in clamping force, and the structure of the clamp may be damaged.

In order to solve the problem of cutting chips, please refer to fig. 1, in the prior art, in addition to installing a dust cap 2 at the shaft hole, a dust cap 3 above the dust cap 2 is installed at the front end of each fixture 1, and then the dust cap is achieved by utilizing the interference fit between the two. However, in practice, it has been found that when the clamp 1 is driven by a power source to clamp the workpiece W, the clamp 1 may float together with the dust-proof plate 3 (as shown by the imaginary line in fig. 1), resulting in a gap D between the dust-proof plate 3 and the dust-proof cover 2, and thus chips of the workpiece W may run into the chute through the gap D, resulting in a reduction in the dust-proof effect.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a chuck, which can effectively improve the dustproof effect.

In order to achieve the above objective, the chuck of the present invention comprises a body, at least two clamps, a dust cap, at least two dust-proof plates, and a pressing plate. The body is provided with a first side surface and a second side surface back to the first side surface, the center of the body is provided with an axle hole penetrating through the first side surface and the second side surface, the first side surface of the body is provided with at least two sliding chutes communicated with the axle hole, and the sliding chutes are radially arranged relative to the axle hole; the clamps are arranged in the sliding grooves of the body in a sliding manner and used for clamping a workpiece to be processed; the dustproof cover is arranged on the first side surface of the body and covers one end of the shaft hole of the body; the dust-proof plates are abutted against one side face of the dust-proof cover back to the shaft hole and are respectively connected with the clamps by one end, so that the dust-proof plates can synchronously move along with the clamps; the pressing plate is abutted against one side face, back to the dustproof cover, of the dustproof plate to ensure that the dustproof plate is tightly abutted against the dustproof cover in the process of moving along with the clamp, so that no gap is generated between the dustproof plate and the dustproof cover, and the purpose of improving the dustproof effect is achieved.

Preferably, the pressing plate can be a single-piece structure or a multi-piece structure, if the former is the case, the pressing plate presses against the dust-proof plates at one time, and if the latter is the case, the pressing plate presses against the dust-proof plates in a one-to-one manner.

Preferably, the outer periphery of the pressing plate has at least two notches and at least two pressing portions, each notch accommodates one of the dust-proof plates, and each pressing portion is adjacent to one of the notches and presses one of the dust-proof plates.

Preferably, the pressing plate has at least two flow channels for guiding the cutting fluid towards one side of the dust cover, the flow channels and the notches are staggered and rotationally symmetrical relative to a through hole positioned at the center, and the width of each flow channel gradually decreases towards the direction far away from the through hole, so that the discharge of the cutting fluid is facilitated.

Preferably, a side surface of each dust-proof plate, which faces away from the dust-proof cover, is provided with a first concave portion and a first convex portion adjacent to the first concave portion, a side surface of each pressure plate, which faces the dust-proof cover, is provided with a second concave portion and a second convex portion adjacent to the second concave portion, the second concave portion of each pressure plate and the second convex portion of one dust-proof plate are mutually embedded and abutted, and the second convex portion of each pressure plate and the second concave portion of one dust-proof plate are mutually embedded and abutted. The dustproof effect is ensured by the interference fit between the two.

The detailed structure, characteristics, assembly or use of the chuck according to the present invention, which can improve the dustproof effect, will be described in the following detailed description of the embodiments. However, those skilled in the art should understand that the detailed description and specific examples are given for the purpose of illustration only, and not for the purpose of limiting the scope of the invention.

Drawings

Fig. 1 is a partially enlarged view of a conventional chuck.

Fig. 2 is a perspective view of a chuck according to embodiment 1 of the present invention.

Fig. 3 is a partially exploded perspective view of a chuck according to embodiment 1 of the present invention.

Fig. 4 is an exploded perspective view of a clamp provided in a chuck according to embodiment 1 of the present invention.

Fig. 5 is a bottom perspective view of a platen provided by the chuck according to embodiment 1 of the present invention.

Fig. 6 is a plan view of a platen provided in a chuck according to embodiment 1 of the present invention.

Fig. 7 is a cross-sectional view of a chuck according to embodiment 1 of the present invention.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is a perspective view of a chuck according to embodiment 2 of the present invention.

Fig. 10 is a partial exploded perspective view of a chuck according to embodiment 2 of the present invention.

Fig. 11 is a bottom perspective view of the subplaten provided by the cartridge according to embodiment 2 of the present invention.

Fig. 12 is an enlarged partial cross-sectional view of a chuck according to embodiment 2 of the present invention.

Wherein, the reference numbers:

1: clamp

2, dust-proof cover

3: dust guard

D is clearance

W is a workpiece

10 clamping head

12 clamping head

20: the main body

22 first side face

24 second side surface

26 shaft hole

28: chute

30, a pull rod

32: T-shaped chute

40: clamp

41 sliding seat

42T-shaped oblique block

43 adjusting groove

44 clamping jaw

45: bolt

46 screw block

50, dust cover

52 dust-proof plate

54: screw

60: pressure plate

61, a gap

62: pressing part

63 flow passage

64 is perforated

65 screw

70 dust-proof board

71 first concave part

72 first convex part

80: pressing plate

82: sub-pressing plate

84 second recess

86 second convex part

88: screw

Detailed Description

Applicants first describe herein, throughout the specification, including the examples and claims that follow, directional terms are used with respect to the drawings. Next, in the embodiments and drawings to be described below, the same reference numerals are used to designate the same or similar components or structural features thereof.

Referring to fig. 2 and 3, the chuck 10 according to embodiment 1 of the present invention includes a body 20, a pull rod 30, three clamps 40, a dust cap 50, three dust plates 52, and a pressing plate 60.

The body 20 has a first side 22 and a second side 24 opposite the first side 22. The body 20 has a central axial hole 26 passing through the first side 22 and the second side 24, the first side 22 of the body 20 has three sliding grooves 28 communicating with the axial hole 26, and the three sliding grooves 28 are radially arranged relative to the axial hole 26.

The pull rod 30 is disposed in the shaft hole 26 of the body 20 and is driven by a power source (not shown) to be displaced along the axial direction of the shaft hole 26. In addition, one end of the pull rod 30 has three T-shaped chutes 32, and the three T-shaped chutes 32 correspond to the three slide grooves 28 of the body 20 in a one-to-one manner.

As shown in fig. 3, 4 and 7, each of the clamps 40 has a sliding base 41, the sliding base 41 is disposed in the sliding slot 28 of the body 20, and one end of the sliding base 41 has a T-shaped inclined block 42, the sliding base 41 is embedded in the T-shaped inclined slot 32 of the pull rod 30 by the T-shaped inclined block 42, so that the sliding base 41 can be displaced along the sliding slot 28 of the body 20 by the displacement of the pull rod 30. Each clamp 40 further has a clamping jaw 44 for clamping a workpiece to be machined, the clamping jaw 44 is locked to two screw blocks 46 by two bolts 45, and the two screw blocks 46 are slidably disposed in an adjustment groove 43 of the slide 41. Therefore, when the two bolts 45 are unscrewed, the position of the clamping jaw 44 relative to the shaft hole 26 can be adjusted through the displacement of the two screw blocks 46, and when the two bolts 45 are locked, the position of the clamping jaw 44 can be fixed.

The dust cap 50 is disposed on the first side 22 of the body 20 and covers one end of the shaft hole 26, as shown in fig. 2, 7 and 8, so as to prevent chips of the workpiece from entering the shaft hole 26 and damaging the pull rod 30 or other components.

Each dust-proof plate 52 abuts against one side surface of the dust-proof cover 50 opposite to the shaft hole 26 and is locked to the slide 41 of each jig 40 by two screws 54, and as shown in fig. 2, 7 and 8, each dust-proof plate 52 can be operated in synchronization with the slide 41 of each jig 40 to prevent chips of the workpiece from flowing into the chute 28 along with the cutting fluid.

The platen 60 is a single sheet of material in this embodiment. The pressing plate 60 is located between the three clamping jaws 44 and the three dust-proof plates 52, and is assembled with the dust-proof cover 50 on the body 20 by three screws 65, as shown in fig. 2, 7 and 8, for assisting the dust-proof cover 50 to prevent chips of the workpiece from entering the shaft hole 26. As shown in fig. 5 and 6, the outer periphery of the pressing plate 60 has three notches 61 and three pressing portions 62, each notch 61 accommodates one dust-proof plate 52, and each pressing portion 62 is adjacent to the notch 61 and presses one dust-proof plate 52, so as to ensure that the three dust-proof plates 52 tightly press against the dust-proof cover 50. In addition, the side of the pressure plate 60 facing the dust cover 50 has three flow channels 63 for guiding the cutting fluid to be discharged, the three flow channels 63 are staggered with the three notches 61 and are rotationally symmetric with respect to a through hole 64 located at the center, and the width of each flow channel 63 gradually decreases towards the direction away from the through hole 64, so as to facilitate the discharge of the cutting fluid.

With the above structure, when the workpiece is being cut, the three dust-proof plates 52 are continuously pressed by the pressing plate 60, so that the three dust-proof plates 52 and the dust-proof cover 50 can keep a close fit relationship, as shown in fig. 6, to ensure that no gap is generated between the three dust-proof plates 52 and the dust-proof cover, thereby effectively blocking the entering of the cutting chips. In addition, the design of the flow channel of the pressure plate 60 can help the cutting fluid to be discharged, so as to reduce the chance of the cutting fluid entering the shaft hole 26 or the chute 28.

On the other hand, the pressure plate is not limited to a single-piece structure, but may be a multi-piece structure. As shown in fig. 9 and 10, in the chuck 12 according to embodiment 2 of the present invention, the pressing plate 80 is composed of three sub-pressing plates 82, and each sub-pressing plate 82 is locked to a side surface of the dust cap 50 opposite to the shaft hole 26 by two screws 88 and is pressed against the three dust-proof plates 70 in a one-to-one manner. As shown in fig. 10 to 12, a side surface of each dust-proof plate 70 facing away from the dust-proof cover 50 has a first concave portion 71 and a first convex portion 72 adjacent to the first concave portion 71, a side surface of each sub-pressing plate 82 facing the dust-proof cover 50 has a second concave portion 84 and a second convex portion 86 adjacent to the second concave portion 84, the second concave portion 84 of the sub-pressing plate 82 and the first convex portion 72 of the dust-proof plate 70 are engaged with each other, and the second convex portion 86 of the sub-pressing plate 82 and the first concave portion 71 of the dust-proof plate 70 are engaged with each other. By means of interference fit between the two components, the cutting fluid can be effectively prevented from entering.

Of course, the present invention can have other embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

1. A chuck, comprising:

the sliding device comprises a body, a first sliding block and a second sliding block, wherein the body is provided with a first side surface and a second side surface back to the first side surface, the center of the body is provided with a shaft hole penetrating through the first side surface and the second side surface, the first side surface of the body is provided with at least two sliding grooves respectively communicated with the shaft hole, and the sliding grooves are radially arranged relative to the shaft hole;

at least two clamps which can be arranged in the at least two sliding grooves of the body in a sliding way;

the dustproof cover is arranged on the first side surface of the body and covers one end of the shaft hole of the body;

at least two dust-proof plates which are abutted against one side surface of the dust-proof cover back to the shaft hole and are respectively connected with one end of the clamp; and

and the pressing plate is abutted against one side surface of the dust-proof plate back to the dust-proof cover.

2. The chuck of claim 1, wherein the pressure plate is a single plate covering the dust cap and disposed on the first side of the body together with the dust cap.

3. The chuck according to claim 2, wherein the pressing plate has at least two notches and at least two pressing portions on its outer periphery, each notch accommodates a dust-proof plate, and each pressing portion abuts against a notch and presses a dust-proof plate.

4. The chuck of claim 3, wherein the pressure plate has at least two flow channels on a side facing the dust cap, the flow channels and the notches being staggered.

5. The chuck of claim 4, wherein the pressure plate has a bore in the center thereof, and the flow passages are rotationally symmetric with respect to the bore.

6. The chuck of claim 5, wherein the width of each flow passage decreases away from the through-hole.

7. The chuck according to claim 1, wherein the pressing plate has at least two sub-pressing plates, each sub-pressing plate is disposed on a side of the dust cap opposite to the axial hole and abuts against a dust-proof plate.

8. The chuck according to claim 7, wherein a side of each dust-proof plate opposite to the dust-proof cover has a first concave portion and a first convex portion adjacent to the first concave portion, a side of each sub-pressing plate facing the dust-proof cover has a second concave portion and a second convex portion adjacent to the second concave portion, the second concave portion of each sub-pressing plate and the first convex portion of one dust-proof plate are engaged with each other, and the second convex portion of each sub-pressing plate and the first concave portion of one dust-proof plate are engaged with each other.