CN211539528U - Large-diameter centering outer groove machining device - Google Patents
Large-diameter centering outer groove machining device Download PDFInfo
- Publication number
- CN211539528U CN211539528U CN201922473464.5U CN201922473464U CN211539528U CN 211539528 U CN211539528 U CN 211539528U CN 201922473464 U CN201922473464 U CN 201922473464U CN 211539528 U CN211539528 U CN 211539528U
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- China
- Prior art keywords
- mandrel
- section
- workpiece
- expansion mandrel
- outer groove
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- Expired - Fee Related
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Abstract
The utility model discloses a large-diameter centering outer groove processing device, which comprises a mandrel, wherein a shaft shoulder for positioning a baffle is arranged in the middle of the mandrel; a cylindrical shaft section for placing a baffle is arranged at the right end of the shaft shoulder; the right end part of the mandrel on the cylindrical shaft section is a tapered mandrel; the spindle is provided with an internal thread connecting section for connecting with a machine tool at one end of the left side of the shaft shoulder. The mandrel is provided with a cylindrical shaft end section with external threads at one end of the right side of the shaft shoulder; the expansion mandrel is provided with a conical surface inner hole matched with the outer surface of the conical mandrel; the expansion mandrel further comprises a nut and a pressing plate, and a tension spring is arranged on the outer side of the expansion mandrel. When the expansion mandrel is used, the locking nut and the pressure plate apply axial load to the expansion mandrel, and the expansion mandrel can move radially due to the conical surface of the inner hole of the expansion mandrel, so that a workpiece is clamped. After the machining is finished, the nut is unscrewed, and the expansion mandrel moves rightwards under the action of the elasticity of the tension spring, so that the workpiece returns to a loosened state, and the workpiece can be quickly and efficiently centered and fixed.
Description
Technical Field
The utility model relates to the technical field of machining, in particular to big footpath centering processing outer tank device.
Background
The disc tooth type parts are extremely wide in application scene in the mechanical field, accurate positioning and fixing of the disc tooth type parts in the machining process are one of key preconditions for guaranteeing machining quality, a better solution is provided for positioning of small-diameter disc tooth type parts in the mechanical field at present, and for large-diameter disc tooth type parts, due to the fact that the axial and radial sizes of workpieces are greatly different, a traditional centering and positioning device cannot quickly, accurately and firmly position the workpieces.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a big footpath centering processing outer tank device.
The utility model aims at realizing through the following technical scheme:
a large-diameter centering outer groove machining device comprises a mandrel; the middle part of the mandrel is provided with a positioning part for positioning a workpiece;
one end of the mandrel is provided with a connecting section for connecting with a machine tool, and the other end of the mandrel is provided with a pressing working section for axially pressing a workpiece; an expansion mandrel used for positioning and fixing a workpiece is arranged between the pressure applying working section and the positioning part, and the expansion mandrel is connected with the mandrel through an inner hole of the expansion mandrel; the pressing working section is provided with a pressing part for applying axial pressure to the workpiece, and the outer side of the expansion mandrel is provided with a return mechanism for rebounding the expansion mandrel.
Further, the positioning part on the mandrel is a shaft shoulder.
Further, the workpiece positioning device further comprises a baffle plate for positioning and fixing the workpiece.
Further, the shaft shoulder is taken as a boundary section, the mandrel is a conical shaft section at one end of the shaft shoulder close to the machine tool, and the outer diameter of the conical shaft section is gradually reduced along the direction far away from the shaft shoulder; one end close to the shaft shoulder and far away from the machine tool is provided with a cylindrical shaft section for placing a baffle or a workpiece; the mandrel is a conical section at one end, far away from the shaft shoulder, of the cylindrical shaft section, and the outer diameter of the conical section is gradually reduced along the direction far away from the shaft shoulder.
Further, the mandrel connecting section is a shaft section with an internal threaded hole.
Further, the pressing part is a nut and a pressing plate, and the mandrel pressing working section is a cylindrical shaft section containing external threads.
Further, the return mechanism is a tension spring.
Further, the expansion mandrel further comprises a rotation stopping pin for preventing the expansion mandrel from rotating.
The device for large-diameter centering machining of the outer groove of claim 7, wherein: the number of the tension springs is four.
Furthermore, the inner hole of the expansion mandrel is a conical surface, and the conical surface can be matched with the conical surface on the right side of the mandrel.
The utility model has the advantages that:
the utility model discloses a big footpath centering processing outer tank device is connected to the lathe main shaft with the mandrel during use, then successively packs into baffle, work piece, inflation mandrel into in proper order, utilizes lock nut and clamp plate to exert axial load to the inflation mandrel at last, is the conical surface because of inflation mandrel hole, so radial movement can be done to the inflation mandrel to press from both sides tight work piece. After the workpiece is machined, the nut is unscrewed, and the expansion mandrel automatically moves rightwards under the action of the elastic force of the tension spring, so that the workpiece returns to a loosened state. The outer circle diameters and the length sizes of the baffle plate and the expansion mandrel in the device can be adaptively modified according to the shape and the size of the workpiece so as to adapt to different workpieces. So, this device has certain elasticity in the in-service use process, can adapt to the work piece of unidimensional not to can realize swift efficient centering fixed to the work piece.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the present invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.
Fig. 1 is a schematic structural diagram of the present invention, and the large-diameter centering outer groove machining apparatus of the present embodiment includes a mandrel 2, and a shaft shoulder 3 for positioning a workpiece 7 or a baffle 13 is disposed at a middle position of the mandrel; the shaft shoulder 3 is taken as a boundary section, the mandrel 2 is taken as a taper mandrel at the left side of the shaft shoulder, and the outer diameter of the mandrel is gradually reduced along the direction far away from the shaft shoulder; a cylindrical shaft section 12 for placing a baffle 13 or a workpiece 7 is arranged at the right end close to the shaft shoulder 3; the mandrel 2 is provided with a taper mandrel 6 at the right end part of the cylindrical shaft section, and the outer diameter of the taper mandrel 6 is gradually reduced along the direction away from the shaft shoulder.
The mandrel 2 is provided with a connecting section for connecting with a machine tool at one end of the left side of the shaft shoulder 3, the connecting section is provided with an internal thread hole 1, and the device is connected with a main shaft of the machine tool through the internal thread hole. A pressure applying working section 10 for axially applying pressure to the workpiece 7 is arranged at one end of the right side of the shaft shoulder 3 of the mandrel 2, specifically, the pressure applying working section 10 of the embodiment is a cylindrical shaft end section with external threads, an expansion mandrel 11 for fixing the workpiece is arranged between the pressure applying working section 10 and the shaft shoulder 3, and the expansion mandrel 11 is provided with a conical inner hole matched with the outer surface of the taper mandrel 6; the pressing working section 10 of the mandrel 2 is provided with a nut 9 and a pressure plate 8 for applying axial pressure to the workpiece 7, and the outside of the expansion mandrel 11 is provided with a return mechanism 5 for rebounding the expansion mandrel.
As a further preferred scheme, the present embodiment further includes a baffle 13 for positioning and fixing the workpiece 7, the baffle 13 is integrally in a groove shape, a through hole matched with the cylindrical shaft section 12 of the mandrel is formed in the center of the baffle 13, the baffle 13 is installed into the cylindrical shaft section 12 of the mandrel during use, and the diameter and length of the outer circle of the baffle 13 can be adaptively adjusted according to the shape and size of the workpiece 7, so that the device is wider and more convenient in application range.
As a further preferable scheme, the return mechanism 5 of the present embodiment is four tension springs, and the four tension springs are respectively and symmetrically arranged on the outer side of the expansion mandrel.
As a further preferred solution, the present embodiment further comprises a rotation stop pin 4 for preventing rotation of the expansion mandrel, the rotation stop pin 4 being provided on the right-hand tapered mandrel segment 6.
When in use, the mandrel 2 is connected to a main shaft of a machine tool through threads, then the baffle 13, the workpiece 7, the expansion mandrel 11, the pressing plate 8 and the nut 9 are sequentially arranged, and finally the rotation stopping pin 4 and the tension spring 5 are arranged. And tightening the nut 9 to enable the nut 9 to push the pressure plate 8 to move leftwards, so as to push the expansion mandrel 11 to move leftwards, and the expansion mandrel 11 moves leftwards and moves radially in a direction away from the central axis due to the fact that the inner hole of the expansion mandrel 11 is a conical surface, so as to clamp the workpiece 7. After the workpiece 7 is machined, the nut 9 is unscrewed, and the expansion mandrel 11 rebounds to the right under the elastic force of the tension spring 5, so that the workpiece 7 returns to the loosened state.
Claims (10)
1. The utility model provides a big footpath centering processing outer tank device which characterized in that: comprises a mandrel; the middle part of the mandrel is provided with a positioning part for positioning a workpiece; one end of the mandrel is provided with a connecting section for connecting with a machine tool, and the other end of the mandrel is provided with a pressing working section for axially pressing a workpiece; an expansion mandrel used for positioning and fixing a workpiece is arranged between the pressure applying working section and the positioning part, and the expansion mandrel is connected with the mandrel through an inner hole of the expansion mandrel; the pressing working section is provided with a pressing part for applying axial pressure to the workpiece, and the outer side of the expansion mandrel is provided with a return mechanism for rebounding the expansion mandrel.
2. The large-diameter centering outer groove machining device according to claim 1, characterized in that: the positioning part on the mandrel is a shaft shoulder.
3. The large-diameter centering outer groove machining device according to claim 1, characterized in that: the workpiece positioning and fixing device further comprises a baffle plate for positioning and fixing the workpiece.
4. The large-diameter centering outer groove machining device according to claim 2, characterized in that: the spindle is a conical shaft section at one end of the shaft shoulder close to the machine tool, and the outer diameter of the conical shaft section is gradually reduced along the direction far away from the shaft shoulder; one end close to the shaft shoulder and far away from the machine tool is provided with a cylindrical shaft section for placing a baffle or a workpiece; the mandrel is a conical section at one end, far away from the shaft shoulder, of the cylindrical shaft section, and the outer diameter of the conical section is gradually reduced along the direction far away from the shaft shoulder.
5. The large-diameter centering outer groove machining device according to claim 1, characterized in that: the mandrel connecting section is a shaft section with an internal thread hole.
6. The large-diameter centering outer groove machining device according to claim 1, characterized in that: the pressure applying part is a nut and a pressure plate, and the mandrel pressure applying working section is a cylindrical shaft section containing external threads.
7. The large-diameter centering outer groove machining device according to claim 1, characterized in that: the return mechanism is a tension spring.
8. The large-diameter centering outer groove machining device according to claim 1, characterized in that: and a rotation stopping pin for preventing the expansion mandrel from rotating.
9. The large-diameter centering outer groove machining device according to claim 7, wherein: the number of the tension springs is four.
10. The large-diameter centering outer groove machining device according to claim 1, characterized in that: the inner hole of the expansion mandrel is a conical surface, and the conical surface can be matched with the conical surface on the right side of the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922473464.5U CN211539528U (en) | 2019-12-31 | 2019-12-31 | Large-diameter centering outer groove machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922473464.5U CN211539528U (en) | 2019-12-31 | 2019-12-31 | Large-diameter centering outer groove machining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211539528U true CN211539528U (en) | 2020-09-22 |
Family
ID=72512568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922473464.5U Expired - Fee Related CN211539528U (en) | 2019-12-31 | 2019-12-31 | Large-diameter centering outer groove machining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211539528U (en) |
-
2019
- 2019-12-31 CN CN201922473464.5U patent/CN211539528U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200922 Termination date: 20211231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |