CN210335241U - Eccentric cover anchor clamps of numerical control dividing head - Google Patents
Eccentric cover anchor clamps of numerical control dividing head Download PDFInfo
- Publication number
- CN210335241U CN210335241U CN201920330431.2U CN201920330431U CN210335241U CN 210335241 U CN210335241 U CN 210335241U CN 201920330431 U CN201920330431 U CN 201920330431U CN 210335241 U CN210335241 U CN 210335241U
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- eccentric
- eccentric sleeve
- clamping
- numerical control
- dividing head
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Abstract
The utility model relates to an eccentric cover mounting fixture of numerical control dividing head belongs to the machine tool fixture field. The utility model adopts the technical proposal that: the numerical control dividing head eccentric sleeve clamp comprises a cylindrical clamping eccentric sleeve, wherein an eccentric clamping hole is formed in the middle of the clamping eccentric sleeve, the eccentric clamping hole and the outer circumferential surface of the clamping eccentric sleeve are arranged in an eccentric mode, two jacking screw holes are formed in the side surface of the clamping eccentric sleeve, the numerical control dividing head eccentric sleeve to be processed is radially fixed through screws, and a fixing screw is arranged at the outer end head of the numerical control dividing head eccentric sleeve to axially fix the numerical control dividing head eccentric sleeve; and a flange is arranged on the other end surface of the clamping eccentric sleeve and is fixed on the end surface of the machine tool spindle. The utility model has the advantages that: the eccentric sleeve fixing clamp is inserted into the main shaft hole, the overhanging length of a workpiece is reduced, and the integral rigidity is improved, so that the production efficiency and the machining precision are improved. The fixing clamp is provided with an eccentric hole, has small radial size difference with an eccentric sleeve to be clamped, and is suitable for quick positioning.
Description
Technical Field
The utility model relates to an eccentric cover mounting fixture of numerical control dividing head belongs to the machine tool fixture field.
Background
The indexing of the numerical control indexing head is realized by worm-gear pair transmission, while the indexing is realized by relative sliding of tooth surfaces during worm-gear transmission, and gaps are generated during long-term use, so that the indexing error is overlarge, and therefore, the indexing mechanism uses the eccentric sleeve to eliminate the gaps. The length of the eccentric sleeve of the indexing mechanism is long, and the requirement on machining precision is high, so that the machining difficulty is high.
When the eccentric hole is machined on the revolving body, a lathe four-jaw chuck is generally used for clamping a workpiece to adjust eccentricity and then machining the workpiece, or a lathe three-jaw chuck is used for clamping a workpiece pad and gasket and then machining the workpiece, but not only the machining precision and the precision stability are poor, but also the long eccentric sleeve cannot be machined; the processing cost of the numerical control machine tool is increased greatly; the eccentric sleeve parts produced in large quantity need to be clamped and positioned specially by single pieces, and time is wasted.
The eccentric sleeve clamp adopted in patent CN205520628U is clamped by an opening, and the positioning accuracy and the centering accuracy are poor.
Disclosure of Invention
The invention provides a numerical control dividing head eccentric sleeve fixing clamp which solves the clamping and fixing problems in eccentric sleeve processing.
In order to achieve the above object, the utility model adopts the following technical scheme:
the numerical control dividing head eccentric sleeve clamp comprises a cylindrical clamping eccentric sleeve, wherein an eccentric clamping hole is formed in the middle of the clamping eccentric sleeve, the eccentric clamping hole and the outer circumferential surface of the clamping eccentric sleeve are arranged in an eccentric mode, two jacking screw holes are formed in the side surface of the clamping eccentric sleeve, the numerical control dividing head eccentric sleeve to be processed is radially fixed through screws, and a fixing screw is arranged at the outer end head of the numerical control dividing head eccentric sleeve to axially fix the numerical control dividing head eccentric sleeve; and a flange is arranged on the other end surface of the clamping eccentric sleeve and is fixed on the end surface of the machine tool spindle.
Preferably, the end face of the main shaft of the machine tool is provided with a centering short cone, and the clamping eccentric sleeve is provided with a positioning spigot matched with the centering short cone.
Preferably, the diameter of the eccentric clamp hole is 0.08-0.12 mm larger than that of the eccentric sleeve of the numerical control dividing head.
The clamping eccentric sleeve is provided with a cone protruding from the end face of the flange, the cone is inserted into a conical hole of a machine tool spindle, and the eccentric clamping hole is formed in the middle of the cone.
The utility model has the advantages that: the eccentric sleeve fixing clamp is inserted into the main shaft hole, the overhanging length of a workpiece is reduced, and the integral rigidity is improved, so that the production efficiency and the machining precision are improved. The fixed clamp is arranged by adopting an eccentric hole, has small radial size difference with an eccentric sleeve to be clamped, and is suitable for quick positioning;
the circumferential surface and the end surface are clamped and fixed at least three points, so that the fixation can be effectively carried out, and the rotation and the radial movement are avoided; the fixing clamp is provided with an eccentric hole and a centering spigot, and is suitable for quickly positioning the fixing clamp by matching with an end surface centering short cone of a machine tool spindle;
the flange matched with the main shaft is arranged at the fixed end of the fixing clamp, so that the furniture can be conveniently fixed on the main shaft, the fixing is firm, the looseness of the chuck in machining can not occur, the machining precision can be improved, the machining error can be avoided, and the machining efficiency is high.
Drawings
Figure 1 is an assembled cross-sectional view of the present invention,
figure 2 is a cross-sectional view of the clamping eccentric sleeve of the present invention,
reference numerals:
1. the device comprises an eccentric clamping sleeve, 2, an eccentric clamping hole, 3, a jacking screw hole, 4, a jacking screw, 5, a positioning groove, 6, a positioning screw hole, 7, a numerical control dividing head eccentric sleeve, 8, an outer end head, 9, a machine tool spindle, 10, a taper hole, 11, a centering short taper, 12, a positioning spigot, 13, a cone, 14 and a flange.
Detailed Description
The following is a further description of the specific structure of the present invention:
the numerical control dividing head eccentric sleeve fixing clamp comprises a cylindrical clamping eccentric sleeve 1, wherein an eccentric clamping hole 2 is formed in the middle of the clamping eccentric sleeve 1, and the eccentric clamping hole 2 and the outer circumferential surface of the clamping eccentric sleeve 1 are arranged eccentrically.
The eccentric sleeve of the numerical control dividing head to be processed is placed in the eccentric clamping hole 2, the center of the eccentric clamping hole 2 is not overlapped with the center of the clamping eccentric sleeve 1, and eccentric arrangement relative to the main shaft is achieved for subsequent processing.
The side of pressing from both sides tight eccentric cover 1 is opened has two tight screw holes 3 in top to run through to eccentric clamp hole 2, it will wait that the numerical control dividing head eccentric bushing 7 extrusion of processing is fixed to establish the tight screw 4 in the eccentric clamp hole 2 of top, the terminal surface eccentric clamp hole 2 position of pressing from both sides tight eccentric cover 1 is equipped with the constant head tank 5 that the size is greater than eccentric clamp hole 2, constant head tank 5 terminal surface is equipped with at least one location screw 6, the outer end 8 embedding constant head tank 5 of numerical control dividing head eccentric bushing 7, the outer end 8 of numerical control dividing head eccentric bushing 7 is equipped with in the fixed screw 6 and fixes numerical control dividing head eccentric bushing 7. The jacking screw 4 and the fixing screw of the end head realize the radial and axial positioning of the numerical control dividing head eccentric sleeve.
The machine tool spindle 9 is provided with a taper hole 10, and the eccentric sleeve fixing clamp is inserted into the spindle hole, so that the length of a cantilever of a workpiece is reduced, the integral rigidity is improved, and the production efficiency and the machining precision are improved.
The other end face of the clamping eccentric sleeve 1 is provided with a flange 14 fixed on a chuck of a machine tool main shaft 9, the end face of the machine tool main shaft 9 is provided with a centering short cone 11, and the clamping eccentric sleeve 1 is provided with a positioning spigot 12 matched with the centering short cone 11. A cone 13 protrudes from the end face of the flange 14 of the clamping eccentric sleeve 1, the cone 13 is inserted into a cone hole 10 of a machine tool spindle 9, and the center of the cone 13 is provided with the eccentric clamping hole 2.
The structure realizes accurate positioning and effective fixation of the clamping eccentric sleeve 1 on the end surface of the machine tool spindle, and provides a reference for subsequent processing of the eccentric sleeve.
The diameter ratio of the eccentric clamping hole 2 is 0.08-0.12 mm larger than that of the eccentric sleeve 7 of the numerical control dividing head, a proper margin is reserved to facilitate the insertion of the eccentric sleeve part, the shaking margin of the eccentric sleeve in the eccentric clamping hole is small, and when the jacking bolt jacks tightly, the position of the end part in the rotation process is small, so that the clamping fixation is facilitated.
The fixing clamp adopts the eccentric hole arrangement, has small radial size difference with an eccentric sleeve to be clamped, and is suitable for quick positioning; the circumferential surface and the end surface are clamped and fixed, so that the fixing can be effectively carried out, and the rotation and the radial movement are avoided; the fixing clamp is provided with an eccentric hole and a centering spigot, and is suitable for quickly positioning the fixing clamp by matching with an end surface centering short cone of a machine tool spindle; the flange matched with the main shaft is arranged at the fixed end of the fixing clamp, so that the fixing clamp is conveniently fixed on the main shaft, the fixing is firm, the looseness of the chuck clamped in the machining process can not occur, the machining precision can be improved, the machining error can be avoided, and the machining efficiency is high.
Compared with the prior art, the method has two remarkable characteristics: firstly, the eccentric sleeve part to be processed is arranged in the clamp and is positioned on the short cone of the machine tool spindle, so that a ring connected by a chuck is omitted, and the overhang length of the processed workpiece is shortened; secondly, a part of the workpiece is deeply inserted into a main shaft hole of the machine tool, and the overhang amount of the processed workpiece is further reduced, so that the integral rigidity is enhanced, the production efficiency is improved, and the processing precision is ensured. The structure is simple, the clamping is convenient, and meanwhile, numerical control machining is replaced by the clamping, so that the cost is effectively controlled.
Claims (4)
1. A numerical control dividing head eccentric sleeve clamp is characterized by comprising a cylindrical clamping eccentric sleeve (1), wherein an eccentric clamping hole (2) is formed in the middle of the clamping eccentric sleeve (1), the eccentric clamping hole (2) and the outer circumferential surface of the clamping eccentric sleeve (1) are eccentrically arranged, two jacking screw holes are formed in the side surface of the clamping eccentric sleeve (1), a numerical control dividing head eccentric sleeve (7) to be processed is radially fixed through a screw (4), and a fixing screw is arranged at the outer end of the numerical control dividing head eccentric sleeve and axially fixes the numerical control dividing head eccentric sleeve (7); the other end face of the clamping eccentric sleeve (1) is provided with a flange and fixed on the end face of a machine tool spindle (9).
2. The numerical control dividing head eccentric bushing clamp as recited in claim 1, characterized in that the end surface of the machine tool spindle (9) is provided with a centering short cone (11), and the clamping eccentric bushing (1) is provided with a positioning spigot (12) matched with the centering short cone (11).
3. The numerical control dividing head eccentric sleeve clamp as claimed in claim 1, wherein the diameter of the eccentric clamp hole (2) is 0.08-0.12 mm larger than that of the numerical control dividing head eccentric sleeve (7).
4. The numerical control dividing head eccentric bushing clamp as claimed in claim 1, wherein a cone (13) protrudes from the clamping eccentric bushing (1) at the end face of the flange (14), the cone (13) is inserted into a cone hole (10) of a machine tool spindle (9), and the eccentric clamping hole (2) is formed in the middle of the cone (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330431.2U CN210335241U (en) | 2019-03-15 | 2019-03-15 | Eccentric cover anchor clamps of numerical control dividing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920330431.2U CN210335241U (en) | 2019-03-15 | 2019-03-15 | Eccentric cover anchor clamps of numerical control dividing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210335241U true CN210335241U (en) | 2020-04-17 |
Family
ID=70173824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920330431.2U Expired - Fee Related CN210335241U (en) | 2019-03-15 | 2019-03-15 | Eccentric cover anchor clamps of numerical control dividing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210335241U (en) |
-
2019
- 2019-03-15 CN CN201920330431.2U patent/CN210335241U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 |