CN113319606A - Cutter locking structure with anti-retreat clamp spring - Google Patents
Cutter locking structure with anti-retreat clamp spring Download PDFInfo
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- CN113319606A CN113319606A CN202110878791.8A CN202110878791A CN113319606A CN 113319606 A CN113319606 A CN 113319606A CN 202110878791 A CN202110878791 A CN 202110878791A CN 113319606 A CN113319606 A CN 113319606A
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- cutter
- clamp spring
- rear end
- nut
- elastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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Abstract
The invention discloses a cutter locking structure with an anti-retreating clamp spring, and belongs to the technical field of machining. Comprises a knife handle, an elastic clamp spring and a locking nut; the front end of the elastic clamp spring is provided with two inclined clamping blocks, and the rear end of the elastic clamp spring is fixed with an elastic strip; two guide grooves are formed in the circumferential surface of the rear end of the cutter, and triangular bulges are arranged at the bottoms of the guide grooves; the locking nut is provided with internal threads, and the circumferential surface of the rear end of the locking nut is provided with external threads; the tool handle is sleeved with a retaining nut, and the front end of the retaining nut is connected and installed at the rear end of the locking nut through threads; the rear end of the retaining nut is provided with a blocking platform which is abutted against the tool shank. The inner wall of the elastic clamp spring is provided with the inclined clamping block and the elastic strip, the stopping and the positioning of the cutter are completed by matching with the guide groove and the bulge on the cutter, the structure is simple, and the operation is convenient; the stopping nut is arranged on the cutter handle, so that the locking nut is prevented from vibrating and retreating, and the cutter is prevented from loosening.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a cutter locking structure with an anti-retreating snap spring.
Background
A tool is a tool used for cutting machining in machine manufacturing, and a machine tool needs to be set on a machine tool through a jig. When a workpiece is machined, firstly, a cutter needs to have a correct position relative to the workpiece and a machine tool, so that the cutter cannot loosen in the machining process, and the machining precision of the workpiece is improved. The elastic clamp spring is an important part in a common clamp and is widely applied to clamping of cutters of drilling machines or milling machines. The elastic clamp spring is compressed by the tool handle and the lock nut to clamp the tool, and transmits torque and prevents the tool from moving axially by means of friction force.
The Chinese patent discloses an elastic clamp spring and a cutter fixing structure (CN105108213A) with a safety lock structure, wherein the cutter fixing structure with the safety lock structure comprises a cutter handle, a cutter, an elastic clamp spring and a lock nut, a clamp spring hole is formed in the cutter handle, the elastic clamp spring is located in the clamp spring hole, the lock nut is in threaded connection with the cutter handle and axially compresses the elastic clamp spring, and the elastic clamp spring clamps the cutter; the safety lock pin is also included; the cutter is provided with a lock pin passing structure; the elastic clamp spring is provided with a safety lock hole, and the axis of the safety lock hole is vertical to the axis of the elastic clamp spring; the safety lock pin is inserted into the safety lock hole and the lock pin passing structure. The safety lock pin is inserted into the safety lock hole and the lock pin passing structure, the axial movement of the cutter is limited by the safety lock pin, and the cutter cannot fall off even if the cutter is loosened.
The defects of the technology are as follows: the safety lock pin is troublesome to position, a spring device needs to be arranged in a matched mode, and if a high-speed rotation working condition exists, the safety lock pin is easy to vibrate due to centrifugal force, so that certain potential safety hazards exist; although the safety lock pin can limit the cutter when the locking nut is loosened, the position of the cutter is shaken when the locking nut is loosened, and the cutter and a workpiece are inevitably damaged.
Disclosure of Invention
In order to solve the technical problem, the invention provides a cutter locking structure with an anti-withdrawal snap spring, which comprises an anti-loosening structure aiming at a locking nut.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention provides a cutter locking structure with an anti-withdrawal clamp spring, which comprises a cutter handle, wherein the end part of the cutter handle is provided with a cutter mounting hole; an elastic clamp spring is installed in the cutter installation hole, a cutter is installed in the elastic clamp spring, and the elastic clamp spring is locked in the cutter installation hole by a locking nut; the inner wall of the front end of the elastic clamp spring is provided with two inclined clamping blocks, and the two inclined clamping blocks are arranged around the axis of the elastic clamp spring in a staggered 180-degree mode; an elastic strip is fixed on the inner wall of the rear end of the elastic clamp spring and abuts against the rear end face of the cutter; two guide grooves are formed in the circumferential surface of the rear end of the cutter, and the two guide grooves correspond to two inclined clamping blocks in the elastic clamping spring one by one; the guide groove is internally provided with a triangular bulge; the inclined fixture block is positioned in the guide groove, and an inclined surface on the inclined fixture block is matched with an inclined surface on the front side of the protrusion; the locking nut is provided with internal threads, the locking nut is installed at the front end of the tool handle through the internal threads in a connecting mode, and the front portion of the locking nut is tightly pressed on the front portion of the elastic clamp spring; the circumferential surface of the rear end of the locking nut is provided with external threads; the tool handle is sleeved with a retaining nut, and the front end of the retaining nut is installed at the rear end of the locking nut through threaded connection; the rear end face of the retaining nut is provided with a blocking platform which is abutted to the tool shank.
It further comprises the following steps: the periphery of handle of a knife is seted up one section circumference formula heavy groove, the fender platform of stopping nut rear end is located the heavy groove of handle of a knife.
The blocking platform comprises two semicircular blocking pieces, and the blocking pieces are connected and installed on the rear end face of the retaining nut through screws.
The screwing directions of the internal thread and the external thread of the locking nut are opposite.
The thread pitches of the internal thread and the external thread of the locking nut are different.
The inner wall of the rear end of the elastic clamp spring is provided with a notch, and the outer end of the elastic strip is fixed in the notch of the elastic clamp spring through a screw.
The invention has the beneficial effects that: the inner wall of the elastic clamp spring is provided with an inclined clamping block and an elastic strip which are matched with a guide groove and a bulge on the cutter to complete the stopping and positioning of the cutter; when the elastic clamp spring is used, the cutter is directly inserted into the elastic clamp spring, the structure is simple, and the operation is convenient.
The stopping nut is arranged on the cutter handle, the stopping nut and the locking nut are threads with different turning pitches, so that the locking nut is prevented from vibrating and retreating, the cutter is prevented from loosening, and the machining is normally finished.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the present invention.
Description of reference numerals: 1. a knife handle; 1-1, a cutter mounting hole; 1-2, sinking a tank; 2. an elastic clamp spring; 2-1, inclining a fixture block; 2-2, elastic strips; 2-3, a notch; 3. a cutter; 3-1, a guide groove; 3-2, convex; 4. locking the nut; 5. a non-return nut; 5-1, blocking the table.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a cutter mounting hole 1-1 is formed in the end portion of a cutter handle 1, a cutter 3 and an elastic clamp spring 2 are sequentially sleeved into the cutter mounting hole 1-1, a locking nut 4 is mounted at the end portion of the cutter handle 1 through internal threads, and the elastic clamp spring 2 is locked in the cutter mounting hole 1-1.
The improvement of the embodiment is that: the inner wall of the front end of the elastic clamp spring 2 is provided with two inclined clamping blocks 2-1, and the inclined clamping blocks 2-1 and the elastic clamp spring 2 are welded or integrally processed. The two inclined clamping blocks 2-1 are symmetrically arranged and staggered 180 degrees around the axis of the elastic clamping spring 2. The inner wall of the rear end of the elastic clamp spring 2 is provided with a notch 2-3, the elastic strip 2-2 is arc-shaped, and the rear end of the elastic strip 2-2 is fixed in the notch 2-3 of the elastic clamp spring 2 through a screw. Two guide grooves 3-1 are formed in the circumferential surface of the rear end of the cutter 3, and the two guide grooves 3-1 correspond to the two inclined clamping blocks 2-1 in the elastic clamping spring 2 one by one. The triangular bulge 3-2 is arranged in the guide groove 3-1, and the inclined surface at the rear side of the bulge 3-2 is used for guiding the inclined fixture block 2-1, so that the inclined fixture block 2-1 can conveniently slide over the highest point of the bulge 3-2. The inclined plane at the front side of the bulge 3-2 is matched with the inclined plane on the inclined clamping block 2-1, so that the effect of compressing and limiting the cutter 3 is achieved. The elastic strip 2-2 abuts against the rear end face of the cutter 3, so that the cutter 3 and the elastic clamp spring 2 can be always tightly attached during installation, and the relative stability of the position is ensured.
The locking nut 4 is provided with an internal thread, and the circumferential surface of the rear end of the locking nut 4 is provided with an external thread. The internal thread and the external thread of the lock nut 4 have opposite rotation directions and different thread pitches. The baffle table 5-1 comprises two semicircular baffle plates which are connected and installed on the rear end face of the retaining nut 5 through screws. The circumferential surface of the knife handle 1 is provided with a section of circumferential sinking grooves 1-2, and the two sinking grooves 1-2 are arranged in the circumferential sinking grooves. When the tool is used, the front part of the locking nut 4 is tightly pressed on the front part of the elastic clamp spring 2, the front end of the retaining nut 5 is installed at the rear end of the locking nut 4 through threaded connection, and the blocking platform 5-1 abuts against the front side face of the sinking groove 1-2 of the tool shank 1. The retaining nut 5 and the locknut 4 adopt threads with different screwing direction and thread pitch, so that the locknut 4 is prevented from vibrating and retreating, and the cutter 3 is ensured not to be loosened.
During assembly, the elastic clamp spring 2 is sleeved at the rear end of the cutter 3; then, the elastic clamp spring 2 is arranged in a cutter mounting hole 1-1 of the cutter handle 1; then, a locking nut 4 is installed, and the locking nut 4 compresses the elastic clamp spring 2; and finally, the retaining nut 5 is rotated to the locking nut 4, and the baffle table 5-1 abuts against the front side face of the sinking groove 1-2 of the tool shank 1.
In the embodiment, the inclined clamping block 2-1 and the elastic strip 2-2 on the inner wall of the elastic clamp spring 2 are used for matching with the guide groove 3-1 and the protrusion 3-2 on the cutter 3 to complete stopping and positioning of the cutter 3, and the cutter 3 is directly inserted into the elastic clamp spring 2, so that the structure is simple and the operation is convenient.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A cutter locking structure with an anti-withdrawal clamp spring comprises a cutter handle (1), wherein a cutter mounting hole (1-1) is formed in the end part of the cutter handle (1); an elastic clamp spring (2) is installed in the cutter installation hole (1-1), a cutter (3) is installed in the elastic clamp spring (2), and the elastic clamp spring (2) is locked in the cutter installation hole (1-1) through a locking nut (4); the method is characterized in that:
the inner wall of the front end of the elastic clamp spring (2) is provided with two inclined clamp blocks (2-1), and the two inclined clamp blocks (2-1) are arranged around the axis of the elastic clamp spring (2) in a staggered 180-degree mode; an elastic strip (2-2) is fixed on the inner wall of the rear end of the elastic clamp spring (2), and the elastic strip (2-2) abuts against the rear end face of the cutter (3); two guide grooves (3-1) are formed in the circumferential surface of the rear end of the cutter (3), and the two guide grooves (3-1) correspond to two inclined clamping blocks (2-1) in the elastic clamping spring (2) one by one; a triangular bulge (3-2) is arranged in the guide groove (3-1); the inclined clamping block (2-1) is positioned in the guide groove (3-1), and an inclined plane on the inclined clamping block (2-1) is matched with an inclined plane on the front side of the protrusion (3-2);
the locking nut (4) is provided with internal threads, the locking nut (4) is installed at the front end of the tool handle (1) through the internal threads in a connecting mode, and the front portion of the locking nut (4) is tightly pressed on the front portion of the elastic clamp spring (2); an external thread is arranged on the circumferential surface of the rear end of the locking nut (4); the tool handle (1) is sleeved with a retaining nut (5), and the front end of the retaining nut (5) is connected with the rear end of the locking nut (4) through threads; the rear end face of the retaining nut (5) is provided with a blocking platform (5-1), and the blocking platform (5-1) is abutted to the cutter handle (1).
2. The tool locking structure with the anti-withdrawal snap spring as claimed in claim 1, wherein a circumferential surface of the tool holder (1) is provided with a circumferential sunken groove (1-2), and the stop (5-1) at the rear end of the anti-withdrawal nut (5) is located in the sunken groove (1-2) of the tool holder (1).
3. The tool locking structure with the anti-withdrawal circlip as claimed in claim 2, characterized in that the stop (5-1) comprises two semicircular ring-shaped stop pieces, and the stop pieces are mounted on the rear end face of the anti-withdrawal nut (5) through screw connection.
4. The tool locking structure with the anti-withdrawal circlip of claim 1 is characterized in that the internal thread and the external thread of the locking nut (4) have opposite directions of rotation.
5. Tool locking arrangement with anti-back-out circlip according to claim 4, characterized in that the pitch of the internal thread and the external thread of the locking nut (4) is different.
6. The tool locking structure with the anti-withdrawal snap spring as claimed in claim 1, wherein the inner wall of the rear end of the elastic snap spring (2) is provided with a notch (2-3), and the outer end of the elastic strip (2-2) is fixed in the notch (2-3) of the elastic snap spring (2) through a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110878791.8A CN113319606B (en) | 2021-08-02 | 2021-08-02 | Cutter locking structure with anti-retreat clamp spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110878791.8A CN113319606B (en) | 2021-08-02 | 2021-08-02 | Cutter locking structure with anti-retreat clamp spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113319606A true CN113319606A (en) | 2021-08-31 |
| CN113319606B CN113319606B (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110878791.8A Active CN113319606B (en) | 2021-08-02 | 2021-08-02 | Cutter locking structure with anti-retreat clamp spring |
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| Country | Link |
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| CN (1) | CN113319606B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029550A (en) * | 2021-11-08 | 2022-02-11 | 安徽得力汽车部件有限公司 | Aluminum extrusion section bar cutting device |
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| CN112828329A (en) * | 2021-01-08 | 2021-05-25 | 常州机电职业技术学院 | Spring chuck clamping mechanism of numerical control lathe |
| EP3838457A1 (en) * | 2019-12-13 | 2021-06-23 | FINAL Tools a.s. | Tool unit for reaming very precise holes |
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2021
- 2021-08-02 CN CN202110878791.8A patent/CN113319606B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060175768A1 (en) * | 2005-02-09 | 2006-08-10 | Campbell David C | Centering drill chuck |
| US20150209870A1 (en) * | 2012-08-09 | 2015-07-30 | Franz Haimer Maschinenbau Kg | Balancing or measuring device |
| CN105108213A (en) * | 2015-09-14 | 2015-12-02 | 森泰英格（成都）数控刀具有限公司 | Elastic clamping spring with safety lock structure and tool fixing structure with safety lock structure |
| CN205020909U (en) * | 2015-09-14 | 2016-02-10 | 森泰英格（成都）数控刀具有限公司 | Elasticity jump ring and cutter fixed structure with safety lock structure |
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| CN205798452U (en) * | 2016-07-24 | 2016-12-14 | 淮阴工学院 | The device of turning blind hole kerve |
| CN106077848A (en) * | 2016-08-02 | 2016-11-09 | 李迎丰 | Fixture attacked by brill |
| CN206122732U (en) * | 2016-08-31 | 2017-04-26 | 艾沛克斯品牌公司 | Chuck and driver |
| CN108119508A (en) * | 2016-11-29 | 2018-06-05 | 刘义稳 | The locking combination nut of prefastening |
| EP3838457A1 (en) * | 2019-12-13 | 2021-06-23 | FINAL Tools a.s. | Tool unit for reaming very precise holes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114029550A (en) * | 2021-11-08 | 2022-02-11 | 安徽得力汽车部件有限公司 | Aluminum extrusion section bar cutting device |
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| CN113319606B (en) | 2021-11-02 |
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