CN209902683U

CN209902683U - Tool bit clamp

Info

Publication number: CN209902683U
Application number: CN201920398978.6U
Authority: CN
Inventors: 王兵; 单延松; 陈艳
Original assignee: Suzhou Heng Bit Precision Tool Co Ltd
Current assignee: Suzhou Heng Bit Precision Tool Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-01-07
Anticipated expiration: 2029-03-27

Abstract

The utility model provides a tool bit clamp, which comprises a handle and a clamp, wherein the clamp comprises a clamp main body and a channel which is coaxially arranged with the clamp main body and is used for placing a round handle of a tool bit, the clamp main body comprises three clamping jaws surrounding the outer side of the channel, a truncated cone-shaped hoop with a wide top and a narrow bottom is arranged on the outer side of the three clamping jaws, a connecting hole for driving the truncated cone-shaped hoop to do axial motion is arranged on the clamp main body, a driving rod is externally connected with the connecting hole, and the driving rod can rotate in the connecting hole; through the cooperation of truncated cone-shaped clamp and three clamping jaw among the above-mentioned technical scheme, can guarantee the even tight tool bit of clamp of atress when fastening to the tool bit, avoid influencing the processing effect of tool bit because of the atress is uneven, can also avoid producing the phenomenon of skidding, improve the machining precision of tool bit.

Description

Tool bit clamp

Technical Field

The utility model relates to a technical field of anchor clamps especially relates to a tool bit anchor clamps.

Background

In the prior art, a tool bit clamp is a common electric tool and machining tool accessory, and is particularly frequently used in drilling machine and lathe machining.

At present, current tool bit includes drill bit part and tail-stock fastening part usually, during the use stretches into the drill bit anchor clamps with the tail-stock part, has the fixed block in the anchor clamps, through the fixed drill bit of the anchor clamps of screwing, the defect of the locking structure of current drill bit is, because locking device is the unilateral application of force, and the in-process torsion of screwing is very big, this kind of fastening mode not only can cause the tail-stock part atress inhomogeneous, also probably produces the phenomenon of skidding, influence subsequent processing operation, cause the extravagant and the unqualified problem of product in time.

SUMMERY OF THE UTILITY MODEL

The utility model provides a force application is even, can press from both sides tight tool bit, and be difficult to produce the tool bit anchor clamps of phenomenon of skidding, assurance machining precision.

For solving the prior art problem, the utility model provides a tool bit anchor clamps, the tool bit includes the round handle of rear end and the cutting edge of front end cutting usefulness, tool bit anchor clamps include handle and anchor clamps, anchor clamps include anchor clamps main part and with being used for of the coaxial setting of anchor clamps main part places the channel of tool bit round handle, the anchor clamps main part is including centering on the three clamping jaw in the channel outside, the three clamping jaw outside is provided with one wide truncated cone shape clamp down, the drive has been seted up in the anchor clamps main part axial motion's connecting hole is made to the truncated cone shape clamp, an external actuating lever of connecting hole, the actuating lever can the connecting hole internal rotation.

In a first possible implementation manner, the clamp main body includes a first clamp section and a second clamp section, a through channel for accommodating the truncated cone-shaped clamp is provided in the first clamp section and the second clamp section, and the truncated cone-shaped clamp can move up and down along the channel under the driving of the driving rod.

With reference to the first possible implementation manner, in a second possible implementation manner, the truncated cone-shaped clamp and the channel are coupled together by insections, and the through channel comprises a first channel with an upper cylindrical section and a second channel with a lower section, which has the same shape as the truncated cone-shaped clamp.

With reference to the first possible implementation manner, in a third possible implementation manner, when the driving rod extends into the connecting hole, the head of the driving rod is always in contact with the insections on the truncated cone-shaped hoop.

With reference to the first possible implementation manner, in a fourth possible implementation manner, an adsorption magnet is arranged at the bottom of the channel.

With reference to the first possible implementation manner, in a fifth possible implementation manner, the diameter of the second clamp section is larger than that of the first clamp section, and the connection hole is disposed on the first clamp section.

With reference to the first possible implementation manner, in a sixth possible implementation manner, the surface of the second clamp section is provided with anti-slip lines.

The beneficial effects of the utility model are that, through the matching of the truncated cone-shaped hoop and the three clamping jaws in the technical scheme, the clamping tool bit with even stress can be ensured when the tool bit is fastened, the influence on the processing effect of the tool bit due to uneven stress is avoided, the slipping phenomenon can also be avoided, and the processing precision of the tool bit is improved; in addition, the adsorption magnet is arranged at the bottom of the groove, so that the tool bit can be effectively prevented from accidentally falling off in an unclamped state; in addition, the anti-skid lines are arranged on the clamp main body, so that the friction force of an operator is larger when the operator performs fastening operation, and the operation is easier and more convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only drawings of some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a tool bit holder according to an embodiment of the present invention.

Fig. 2 is a top view of a tool bit holder according to an embodiment of the present invention.

Fig. 3 is a partial cross-sectional view of the inside of the clamp main body of the tool bit clamp according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative work belong to the protection scope of the present invention.

The embodiment provides a tool bit clamp, wherein a tool bit comprises a round handle at the rear end and a cutting edge for cutting the front end, the tool bit clamp is shown in a front view in fig. 1 and a top view in fig. 2, and comprises a handle 1 and a clamp, the clamp comprises a clamp body and a channel which is coaxial with the clamp body and used for placing the round handle of the tool bit, an adsorption magnet is arranged at the bottom of the channel to prevent the tool bit from accidentally falling in an unclamped state, three clamping jaws 21 used for fastening the round handle of the tool bit are arranged around the outer ring of the channel, and a truncated cone-shaped hoop 26 which is wide at the top and narrow at the bottom is arranged on the outer side of the three clamping jaws 21, specifically shown in fig. 3.

The clamp body comprises a first clamp section 22 and a second clamp section 23, both of which are cylindrical structures, and the diameter of the second clamp section 23 is larger than that of the first clamp section 22.

A connecting hole 24 is formed in the first clamp section 22, and the connecting hole 24 mainly serves to drive the truncated cone-shaped hoop 25 to move axially by externally connecting a driving rod, so that the purpose of tightening and loosening the three clamping jaws 21 is achieved; the surface of the second clamp section 23 is provided with annular anti-slip threads 25 which provide friction for the operator when performing the tightening operation.

In addition, in the embodiment, a cross-sectional view of a specific matching structure of the truncated cone-shaped clamp 26 and the clamp body is shown in fig. 3, the truncated cone-shaped clamp 26 is arranged in a through channel inside the first clamp section 22 and the second clamp section 23, the inner wall of the through channel is in a tooth pattern shape, the outer wall of the truncated cone-shaped clamp 26 is also in a tooth pattern shape, and the tooth pattern shapes are just coupled with each other; just the through passage include that the upper segment is columniform first passageway and hypomere and truncated cone shape clamp 26 the same second passageway of shape, outside actuating lever stretches into in the connecting hole 24, the head of actuating lever need with the insection on the truncated cone shape clamp 26 has the contact all the time, just so can guarantee that the application of force of actuating lever can convert axial power drive truncated cone shape clamp 26 is at vertical direction along insection motion, realizes tightening up and relaxing of three clamping jaw 21.

Through the matching of the truncated cone-shaped hoop and the three clamping jaws in the technical scheme, the tool bit can be clamped under uniform stress when being fastened, the influence on the machining effect of the tool bit due to uneven stress is avoided, the slipping phenomenon can be avoided, and the machining precision of the tool bit is improved; in addition, set up anti-skidding line in the anchor clamps main part, also enable operating personnel frictional force when carrying out fastening operation bigger, it is more light convenient to operate.

The above detailed description is made on a tool bit fixture provided by the embodiments of the present invention, and the specific embodiments are applied herein to explain the technical solution of the present invention, and the above embodiments are only preferred embodiments of the present invention, and are not used to limit the protection scope of the present invention, and for those skilled in the art, the changes or improvements that can be conceived in the technical scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a tool bit anchor clamps, the tool bit includes the round handle of rear end and the cutting edge of front end cutting usefulness, a serial communication port, including handle and anchor clamps, anchor clamps include anchor clamps main part and with being used for of the coaxial setting of anchor clamps main part places the channel of tool bit round handle, anchor clamps main part is including centering on the three clamping jaw in the channel outside, the three clamping jaw outside is provided with the truncated cone shape clamp of narrow down wide from top to bottom, the drive has been seted up in the anchor clamps main part the connecting hole that axial motion was made to the truncated cone shape clamp, the external actuating lever of connecting hole, the actuating lever can the connecting hole internal rotation.

2. A bit holder according to claim 1, wherein the holder body comprises a first holder section and a second holder section, the first holder section and the second holder section having a through passage therein for receiving the frusto-conical yoke, the frusto-conical yoke being movable up and down the passage by a drive rod.

3. A bit holder as claimed in claim 2, wherein the frusto-conical band and the passage are coupled together by insection and the through passage comprises a first upper cylindrical passage and a second lower cylindrical passage of the same shape as the frusto-conical band.

4. A bit holder as claimed in claim 3, wherein the head of the drive rod is in constant contact with the serrations on the frusto-conical band when the drive rod is extended into the attachment aperture.

5. A bit holder as claimed in claim 1, wherein the channel bottom is provided with a suction magnet.

6. A bit holder according to claim 2, wherein the diameter of the second holder section is larger than the diameter of the first holder section, and the attachment hole is provided in the first holder section.

7. A bit holder according to claim 2, wherein the second holder section is provided with anti-slip texturing on its surface.