CN212071113U - Anti-rollback clamping structure - Google Patents
Anti-rollback clamping structure Download PDFInfo
- Publication number
- CN212071113U CN212071113U CN202020691038.9U CN202020691038U CN212071113U CN 212071113 U CN212071113 U CN 212071113U CN 202020691038 U CN202020691038 U CN 202020691038U CN 212071113 U CN212071113 U CN 212071113U
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- China
- Prior art keywords
- reformed
- connecting block
- cutter
- collet chuck
- collet
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Abstract
The utility model discloses an anti-rollback clamping structure, which comprises a locking nut, a knife handle, a connecting block, a reformed collet chuck and a reformed cutter; the advantages are as follows: the clamping device is simple and compact in structure, the clamping of the cutter is stabilized through the improvement of the structure, the cost of repairing the workpiece in the later period is reduced, and the technical problem existing in the known technology is solved.
Description
Technical Field
The utility model relates to a valve electric actuator technical field, especially an anti-roll back formula clamping structure.
Background
At present, the box body of the valve electric device can be processed on a cnc processing center in a full sequence. And the box body is clamped once at the cnc machining center, so that the machining of multiple processes can be finished, wherein the processes comprise milling, boring, reaming, drilling, tapping and the like. The machining center can accurately ensure the center height, the center distance and the like of the box body, is favorable for controlling the key sizes of the box body, and has stable quality and high production efficiency.
In the prior art, a tool mounted on a cnc machining center is often clamped by a collet chuck, such as a drill or a tap. As shown in fig. 1, a collet 1 and a lock nut 2 are fixedly installed through an eccentric clamping groove, a tail shank of a tool 3 is installed in an inner hole of the collet 1, the lock nut 2 and a tool shank 4 are fastened through threaded fit, a plurality of straight cutting grooves are formed in the conical surface of the collet 1, the straight cutting grooves on the collet 1 are compressed to tighten the inner diameter of the collet 1 in the screwing process of the lock nut 2, and the tail shank of the tool 3 is clamped and locked through friction force in the inner hole of the collet 1.
However, this structure has the following disadvantages: this structure is through tightening up the collet chuck internal diameter, increases frictional force and locks the cutter, if add man-hour main shaft atress too big, the lathe will produce great vibration, lock nut may produce not hard up with the screw-thread fastening of handle of a knife, just can produce the cutter at the processing work piece this moment and roll back the phenomenon, cause machining dimension not in place, because machining center machining characteristic, this kind of condition often is difficult for discovering, causes the promotion of product disqualification rate, influences production efficiency, also can cause the expense of later stage repair box.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anti-formula of rolling back clamping structure, its structure is succinct compact, has stabilized the centre gripping of cutter through the improvement of structure, has reduced the expense of later stage repair work piece, has solved the technical problem who exists among the well-known art.
The technical scheme of the utility model: the anti-rollback type clamping structure comprises a lock nut and a tool handle, wherein the lock nut is fastened with the tool handle in a threaded fit manner; it is characterized in that the device also comprises a connecting block, a reformed collet and a reformed cutter; the inner hole of the reformed collet chuck is internally provided with an internal thread, the connecting block is provided with an external thread with the same pitch as the internal thread of the inner hole of the reformed collet chuck, and the connecting block is in threaded connection with the inner hole of the reformed collet chuck; the connecting block is arranged in a plane groove of the tail handle of the remanufacturing cutter in a plane interference fit mode.
The reformed collet chuck and the locking nut are fixedly installed through the eccentric clamping groove.
The utility model discloses a theory of operation: when the reformed cutter is loaded, the reformed cutter provided with the connecting block is screwed into an inner hole of the reformed collet chuck, the reformed collet chuck and the lock nut are fixedly arranged through the eccentric clamping groove, the lock nut and the cutter handle are connected and fastened in a threaded fit manner, the lock nut is screwed, the straight cutting groove on the reformed collet chuck is compressed to tighten the inner diameter of the straight cutting groove, and the reformed cutter is clamped and locked.
The utility model has the advantages and positive effects that: the utility model discloses having carried out the transformation of threaded connection formula with the collet chuck, having increased the connecting block, the complete double-screw bolt cutting of this connecting block accessible forms, and once processing can cut into the polylith, supplies a plurality of cutters to use, and processing is convenient. Through increasing the connecting block, can the position of fixed tool in the collet chuck, the tool has threaded connection fixed when lock nut is not hard up, can prevent that the tool from rolling back, and the centre gripping tool is more stable, has improved the installation reliability of tool.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic structural view of the anti-rollback clamping structure of the present invention.
Wherein, 1 is the collet chuck, 2 is lock nut, 3 is the cutter, 4 is the handle of a knife, 5 is the connecting block, 6 is the system collet chuck, 7 is the system cutter.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated in detail with reference to fig. 2 of the accompanying drawings.
Example 1: the anti-rollback type clamping structure comprises a lock nut 2 and a knife handle 4, wherein the lock nut 2 is fastened with the knife handle 4 through thread matching; the device is characterized by also comprising a connecting block 5, a modified collet 6 and a modified cutter 7; the inner hole of the modified collet chuck 6 is internally provided with an internal thread, the connecting block 5 is provided with an external thread with the same pitch as the internal thread of the modified collet chuck 6, and the connecting block 5 is in threaded connection with the inner hole of the modified collet chuck 6; the connecting block 5 is arranged in a plane groove of the tail handle of the modified cutter 7 through plane interference fit.
The modified collet 6 and the locking nut 2 are fixedly installed through the eccentric clamping groove.
The working principle of the embodiment is as follows: when the modified cutter 7 is loaded, the modified cutter 7 provided with the connecting block 5 is screwed into an inner hole of the modified collet chuck 6, the modified collet chuck 6 and the locking nut 2 are fixedly installed through an eccentric clamping groove, the locking nut 2 and the cutter handle 4 are connected and fastened in a threaded fit mode, the locking nut 2 is screwed, a straight cutting groove in the modified collet chuck 6 is compressed to tighten the inner diameter of the straight cutting groove, and the modified cutter 7 is clamped and locked.
Claims (2)
1. The anti-rollback type clamping structure comprises a lock nut and a tool handle, wherein the lock nut is fastened with the tool handle in a threaded fit manner; it is characterized in that the device also comprises a connecting block, a reformed collet and a reformed cutter; the inner hole of the reformed collet chuck is internally provided with an internal thread, the connecting block is provided with an external thread with the same pitch as the internal thread of the inner hole of the reformed collet chuck, and the connecting block is in threaded connection with the inner hole of the reformed collet chuck; the connecting block is arranged in a plane groove of the tail handle of the remanufacturing cutter in a plane interference fit mode.
2. The anti-rollback clamping structure of claim 1, wherein the modified collet and the lock nut are fixedly mounted through an eccentric slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020691038.9U CN212071113U (en) | 2020-04-29 | 2020-04-29 | Anti-rollback clamping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020691038.9U CN212071113U (en) | 2020-04-29 | 2020-04-29 | Anti-rollback clamping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212071113U true CN212071113U (en) | 2020-12-04 |
Family
ID=73587949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020691038.9U Active CN212071113U (en) | 2020-04-29 | 2020-04-29 | Anti-rollback clamping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212071113U (en) |
-
2020
- 2020-04-29 CN CN202020691038.9U patent/CN212071113U/en active Active
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |