CN215698023U - Main shaft quick change structure - Google Patents
Main shaft quick change structure Download PDFInfo
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- CN215698023U CN215698023U CN202121571567.6U CN202121571567U CN215698023U CN 215698023 U CN215698023 U CN 215698023U CN 202121571567 U CN202121571567 U CN 202121571567U CN 215698023 U CN215698023 U CN 215698023U
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- sleeve
- main shaft
- tensioning
- tensioning sleeve
- spindle
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Abstract
The utility model discloses a spindle quick-change structure, which comprises: the tensioning sleeve is connected to the tail end of the tensioning sleeve, a tensioning handle is installed on the tensioning sleeve, the spring chuck is connected to the front end of the tensioning sleeve in a locking mode and matched with the inner wall face of the main shaft, the tensioning handle drives the tensioning sleeve to move axially through the tensioning sleeve, the tensioning sleeve drives the spring chuck to move axially, clamping and loosening of the spring chuck are achieved, and quick replacement of workpieces is achieved. Through the mode, the quick change structure of the spindle can realize quick change of the spring chuck, and the workpiece can be clamped simply and quickly by loosening and tensioning the tensioning sleeve, so that the quick change structure of the spindle is suitable for clamping and changing the workpiece in mass production, and the production efficiency is greatly improved.
Description
Technical Field
The utility model relates to the technical field of lathes, in particular to a spindle quick-change structure.
Background
The portable lathe is simple to operate, convenient to adjust, economical and reliable, and wide in application range.
The collet chuck is a cylindrical jig for fastening a workpiece to be machined, which is used for mounting on a machine tool, is capable of accurately positioning and clamping the workpiece or a tool, and has resistance to torque and resistance to cutting forces from multiple directions.
At present, a chuck is usually used for clamping on some lathes, the process of clamping workpieces is complex, the requirement of mass production cannot be met, the difficulty of operation is increased, and the production efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problem of providing a spindle quick-change structure, which can realize quick change of a spring chuck, is suitable for changing cutters in mass production and greatly improves the production efficiency.
In order to solve the technical problems, the utility model adopts a technical scheme that: provided is a spindle quick-change structure, including: the tail end of the tensioning sleeve is sleeved with the tensioning sleeve, a tensioning handle is arranged on the tensioning sleeve, the spring chuck is connected to the front end of the tensioning sleeve in a locking manner and matched with the inner wall surface of the main shaft,
the tensioning handle drives the tensioning sleeve to move axially through the tensioning sleeve, the tensioning sleeve drives the spring chuck to move axially, clamping and loosening of the spring chuck are achieved, and quick replacement of workpieces is completed.
In a preferred embodiment of the utility model, a plurality of main shaft limiting grooves are uniformly distributed on the outer peripheral surface of the front end of the main shaft, and the chuck clamping pin penetrates through a front partition plate on the outer periphery of the main shaft along the clamping pin sleeve and is clamped into the main shaft limiting grooves to limit the rotation of the main shaft.
In a preferred embodiment of the utility model, a positioning key pin is arranged on the main shaft at a position matched with the spring chuck, and the spring chuck is placed in the main shaft, so that the positioning key pin in the main shaft hole clamps the key groove of the spring chuck to limit the rotation of the spring chuck in the main shaft.
In a preferred embodiment of the utility model, the inner wall surface of the front end of the tensioning sleeve is provided with a first locking thread, the outer circumferential surface of the tail part of the collet chuck is provided with a second locking thread, and the second locking thread at the tail part of the collet chuck is screwed with the first locking thread in the tensioning sleeve.
In a preferred embodiment of the utility model, the inner wall surface of the front end of the spindle is provided with a first matching plane and a second guiding conical surface which are matched with the front end of the collet chuck in sequence, and the inner diameter of the second guiding conical surface is gradually reduced from outside to inside.
In a preferred embodiment of the utility model, the tensioning sleeve and the tensioning sleeve are supported by a bearing and a bearing bush, the bearing bush is arranged in a step shape,
the outer side face of a first step of the bearing bush is in contact with bearing balls, the inner side face of the first step is attached to the outer peripheral face of the tensioning sleeve, the outer side face of a second step of the bearing bush is attached to the tensioning sleeve, and the inner side face of the second step is in contact with a shaft retainer ring on the tensioning sleeve.
In a preferred embodiment of the utility model, the tensioning sleeve is provided with a positioning groove, a positioning small sleeve is arranged in the positioning groove, one end of the tensioning handle is hinged through a hinge shaft, the hinge shaft is arranged in the positioning small sleeve, the other end of the tensioning handle is hinged with a support rod fixed on the spindle shell through the hinge shaft, and the tensioning handle drives the tensioning sleeve to separate and slide and position through an internal steel ball.
In a preferred embodiment of the utility model, the main shaft and the main shaft shell are supported by a bearing, a grooved wheel sleeve and a connecting sleeve are arranged between the tail end of the main shaft and the tensioning sleeve,
the surface of the grooved pulley sleeve is uniformly provided with a plurality of pulley grooves, the connecting sleeve is provided with a clamping plate groove, the grooved pulley sleeve and the connecting sleeve are fixedly connected by inserting a clamping plate into the clamping plate groove, and the synchronous rotation of the tensioning sleeve and the main shaft is realized.
In a preferred embodiment of the utility model, the clamping plate comprises a guide projection and a limit projection, a clamping plate stop pin is arranged in a gap between the clamping plate and the sheave sleeve and the connecting sleeve, a clamping plate spring is arranged in the clamping plate stop pin, the top end of the clamping plate spring abuts against the guide projection at the bottom of the clamping plate, the bottom of the clamping plate spring abuts against the surface of the tensioning sleeve,
the limiting protrusions are matched with wheel grooves in the surface of the grooved wheel sleeve, and the clamping plate moves up and down under the action of the clamping plate spring to realize limiting fixation of the limiting protrusions on the main shaft and the tensioning sleeve.
The utility model has the beneficial effects that: the spindle quick-change structure can realize quick replacement of the spring chuck, is suitable for replacement of cutters in mass production, and greatly improves the production efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic structural view of a preferred embodiment of a spindle quick-change structure according to the present invention;
FIG. 2 is a schematic structural view of another preferred embodiment of a quick-change spindle structure according to the present invention;
FIG. 3 is a front view of a preferred embodiment of the quick-change spindle structure of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
the parts in the drawings are numbered as follows: 100. the main shaft, 110, a main shaft limiting groove, 120, a chuck clamping pin, 130, a clamping pin sleeve, 140, a positioning key pin, 150, a first matching plane, 160, a second guiding conical surface, 170, a main shaft shell, 200, a tensioning sleeve, 210, a locking thread I, 220, a bearing bush, 221, a first step, 222, a second step, 230, a shaft retainer ring,
300. the tensioning sleeve comprises a tensioning sleeve body 310, a positioning groove 320, a positioning small sleeve body 400, a tensioning handle 500, a supporting rod 600, a grooved pulley sleeve 610, a wheel groove 700, a connecting sleeve 710, a clamping plate groove 800, a clamping plate 810, a guide protrusion 820, a limiting protrusion 830, a clamping plate stop pin 840 and a clamping plate spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 to 4, an embodiment of the present invention includes:
a quick spindle change structure, comprising: the main shaft 100 and the tension sleeve 200 connected in the main shaft 100, the tail end of the tension sleeve 200 is sleeved with a tension sleeve 300, the tension sleeve 300 is provided with a tension handle 400, the spring collet is locked at the front end of the tension sleeve 200 and matched with the inner wall surface of the main shaft 100,
specifically, a plurality of spindle limiting grooves 110 are uniformly distributed on the outer peripheral surface of the front end of the spindle 100, and the chuck clamping pin 120 penetrates through a front partition plate on the outer periphery of the spindle 100 along the clamping pin sleeve 130 and is clamped into the spindle limiting groove 110 to limit the rotation of the spindle, so that the screw thread at the tail end of the collet chuck can be conveniently screwed and loosened.
The main shaft 100 is provided with a positioning key pin 140 at a position matched with the spring chuck, and the spring chuck is placed into the main shaft 100 hole from the front end of the lathe, so that the positioning key pin 140 in the main shaft hole clamps a key groove on the spring chuck, the rotation of the spring chuck in the main shaft 100 is limited, and a positioning effect is achieved.
The inner wall surface of the front end of the tensioning sleeve 200 is provided with a first locking thread 210, the outer peripheral surface of the tail part of the collet chuck is provided with a second locking thread, and the second locking thread at the tail part of the collet chuck is screwed with the first locking thread 210 in the tensioning sleeve 200.
The inner wall surface of the front end of the main shaft 100 is sequentially provided with a first matching plane 150 and a second guiding conical surface 160 which are matched with the front end of the collet chuck, the inner diameter of the second guiding conical surface 160 is gradually reduced from outside to inside, the axial displacement of the tensioning sleeve 200 drives the collet chuck to axially move along the direction that the inner diameter of the second guiding conical surface 160 is gradually reduced to realize screwing, and otherwise, loosening is realized.
The main shaft 100 is supported by the main shaft housing 170 through a bearing, a grooved pulley sleeve 600 and a connecting sleeve 700 are arranged between the tail end of the main shaft 100 and the tension sleeve 200, a plurality of pulley grooves 610 are uniformly distributed on the surface of the grooved pulley sleeve 600, a clamping plate groove 710 is formed in the connecting sleeve 700, the grooved pulley sleeve 600 and the connecting sleeve 700 are fixedly connected by inserting a clamping plate 800 into the clamping plate groove 710, and the synchronous rotation of the tension sleeve 200 and the main shaft 100 is realized.
Further, the clamping plate 800 comprises a guide protrusion 810 and a limiting protrusion 820, a clamping plate blocking pin 830 is arranged in a gap between the clamping plate 800 and the sheave sleeve 600 and the connecting sleeve 700, a clamping plate spring 840 is arranged in the clamping plate blocking pin 810, the top end of the clamping plate spring 840 abuts against the guide protrusion 810 at the bottom of the clamping plate 800, the bottom of the clamping plate spring 840 abuts against the surface of the tensioning sleeve 200, the limiting protrusion 820 is matched with the sheave groove 610 on the surface of the sheave sleeve 600, the clamping plate 800 moves up and down under the action of the clamping plate spring 840, and limiting fixing of the limiting protrusion 820 on the main shaft 100 and the tensioning sleeve 200 is achieved.
Further, the tensioning sleeve 300 and the tensioning sleeve 200 are supported by a bearing and a bearing bush 220, the bearing bush 220 is arranged in a step shape:
specifically, the outer side surface of the first step 221 of the bearing bush 220 contacts with the bearing balls, and the inner side surface of the first step 221 is attached to the outer peripheral surface of the tightening sleeve 200; the outer side surface of the second step 222 of the bearing bush 220 is fitted to the tightening sleeve 300, and the inner side surface of the second step 222 is in contact with the shaft retainer 230 of the tightening sleeve 200.
The tightening and sealing between the tightening sleeve 300 and the tightening sleeve 200 is achieved by means of the bearing and the bearing bushing 220, ensuring a fast and synchronous axial movement.
Further, a positioning groove 310 is formed in the tensioning sleeve 300, a positioning small sleeve 320 is arranged in the positioning groove 310, one end of the tensioning handle 400 is hinged through a hinge shaft, the hinge shaft is arranged in the positioning small sleeve 320, and the other end of the tensioning handle 400 is hinged with a supporting rod 500 fixed on the spindle housing 170 through the hinge shaft.
The tightening sleeve 200 is coupled with the main shaft 100 to rotate synchronously through the engagement and disengagement of the sheave sleeve 600 and the connection sleeve 700, and the tightening handle 400 drives the tightening sleeve 200 to engage and disengage through the steel balls for sliding positioning, so that the tightening sleeve is smooth and has low sound.
The working process of the spindle quick-change structure comprises the following steps:
the tightening handle 400 drives the tightening sleeve 200 to move axially through the tightening sleeve 300, the first locking thread 210 at the front end of the tightening sleeve 200 is screwed with the second locking thread at the tail of the collet chuck, the collet chuck is driven to move axially along the direction in which the inner diameter of the second guiding conical surface 160 is gradually reduced to realize tightening, otherwise, loosening is realized, and the workpiece is quickly replaced.
The main shaft quick-change structure has the beneficial effects that:
through the elasticity of the tensioning sleeve, the quick clamping of the spring chuck can be realized, the quick clamping device is suitable for replacing workpieces in mass production, and the production efficiency is simply, rapidly and greatly improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A kind of main axis quick change structure, characterized by that, comprising: the tail end of the tensioning sleeve is sleeved with the tensioning sleeve, a tensioning handle is arranged on the tensioning sleeve, the spring chuck is connected to the front end of the tensioning sleeve in a locking manner and matched with the inner wall surface of the main shaft,
the tensioning handle drives the tensioning sleeve to move axially through the tensioning sleeve, the tensioning sleeve drives the spring chuck to move axially, clamping and loosening of the spring chuck are achieved, and quick replacement of workpieces is completed.
2. The quick-change structure for the main shaft according to claim 1, wherein a plurality of main shaft limiting grooves are uniformly distributed on the outer peripheral surface of the front end of the main shaft, and the chuck clamping pin penetrates through a front partition plate on the outer periphery of the main shaft along the clamping pin sleeve to be clamped into the main shaft limiting grooves to limit the rotation of the main shaft.
3. The quick-change structure for the spindle according to claim 1, wherein a positioning key pin is arranged on the spindle at a position matched with the collet chuck, and the collet chuck is placed in the spindle so that the positioning key pin in the spindle hole blocks a key groove of the collet chuck to limit the rotation of the collet chuck in the spindle.
4. The quick change structure of the spindle according to claim 1, characterized in that the inner wall surface of the front end of the tensioning sleeve is provided with a first locking thread, the outer circumferential surface of the tail part of the collet chuck is provided with a second locking thread, and the second locking thread at the tail part of the collet chuck is screwed with the first locking thread in the tensioning sleeve.
5. The quick-change structure for the spindle according to claim 4, wherein the inner wall surface of the front end of the spindle is provided with a first matching plane and a second guiding conical surface which are matched with the front end of the collet chuck in sequence, and the inner diameter of the second guiding conical surface gradually decreases from outside to inside.
6. The quick-change structure of the main shaft according to claim 1, characterized in that the tensioning sleeve and the tensioning sleeve are supported by a bearing and a bearing bush, the bearing bush is arranged in a step shape,
the outer side face of a first step of the bearing bush is in contact with bearing balls, the inner side face of the first step is attached to the outer peripheral face of the tensioning sleeve, the outer side face of a second step of the bearing bush is attached to the tensioning sleeve, and the inner side face of the second step is in contact with a shaft retainer ring on the tensioning sleeve.
7. The quick-change structure for the spindle as claimed in claim 1, wherein the tension sleeve is provided with a positioning groove, a positioning small sleeve is arranged in the positioning groove, one end of the tension handle is hinged through a hinge shaft, the hinge shaft is arranged in the positioning small sleeve, the other end of the tension handle is hinged through the hinge shaft to a support rod fixed on the spindle housing, and the tension handle drives the tension sleeve to separate and slide and position through the internal steel ball.
8. The quick-change structure of the main shaft as claimed in claim 7, wherein the main shaft is supported by a bearing with a housing of the main shaft, a grooved pulley sleeve and a connecting sleeve are arranged between the tail end of the main shaft and the tensioning sleeve,
the surface of the grooved pulley sleeve is uniformly provided with a plurality of pulley grooves, the connecting sleeve is provided with a clamping plate groove, the grooved pulley sleeve and the connecting sleeve are fixedly connected by inserting a clamping plate into the clamping plate groove, and the synchronous rotation of the tensioning sleeve and the main shaft is realized.
9. The quick-change structure for the spindle according to claim 8, wherein the locking plate includes a guide protrusion and a limit protrusion, a locking plate catch pin is provided in a gap between the locking plate and the sheave sleeve and the connecting sleeve, a locking plate spring is provided in the locking plate catch pin, a top end of the locking plate spring abuts against the guide protrusion at the bottom of the locking plate, a bottom of the locking plate spring abuts against the surface of the tensioning sleeve,
the limiting protrusions are matched with wheel grooves in the surface of the grooved wheel sleeve, and the clamping plate moves up and down under the action of the clamping plate spring to realize limiting fixation of the limiting protrusions on the main shaft and the tensioning sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121571567.6U CN215698023U (en) | 2021-07-12 | 2021-07-12 | Main shaft quick change structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121571567.6U CN215698023U (en) | 2021-07-12 | 2021-07-12 | Main shaft quick change structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215698023U true CN215698023U (en) | 2022-02-01 |
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ID=80048546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121571567.6U Active CN215698023U (en) | 2021-07-12 | 2021-07-12 | Main shaft quick change structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215698023U (en) |
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2021
- 2021-07-12 CN CN202121571567.6U patent/CN215698023U/en active Active
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