CN213858238U - Tool structure for ultra-precise turning - Google Patents
Tool structure for ultra-precise turning Download PDFInfo
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- CN213858238U CN213858238U CN202120895602.3U CN202120895602U CN213858238U CN 213858238 U CN213858238 U CN 213858238U CN 202120895602 U CN202120895602 U CN 202120895602U CN 213858238 U CN213858238 U CN 213858238U
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Abstract
The invention discloses a tool structure for ultra-precision turning, which comprises a tool main body, wherein the tool main body is provided with a workpiece assembling surface in contact with a workpiece to be turned and a machine tool assembling surface in contact with a vacuum chuck of an ultra-precision lathe; a plurality of through holes communicated with the vacuum chuck are formed between the workpiece assembling surface and the machine tool assembling surface; the through hole is provided with continuous or discontinuous internal threads; also comprises a plurality of screws matched with the internal threads. The through hole outside the workpiece overlapped can be stopped by the screw according to the shape of the workpiece, on one hand, the ventilation part of the through hole is only limited to be contacted with the workpiece, thereby generating enough adsorption force; on the other hand, the balance weight of the screw can be used for realizing dynamic balance when the whole tool main body rotates.
Description
Technical Field
The utility model relates to a work piece frock structure specifically is a frock structure for ultra-precision turning. Belonging to the field of ultra-precise turning.
Background
At present, the ultra-precision turning technology is mainly a single-point diamond turning technology, namely, the direct surface forming of an optical element is realized on a single-point diamond lathe, so that the single-point diamond turning technology has the advantages of high precision, high efficiency, suitability for batch production, small pollution and the like.
Because the machining precision of single-point diamond turning is mainly determined by the precision of a machine tool, the precision of the current single-point diamond turning machine can generally reach submicron precision, and the precision is very high, so the influence of clamping stress caused by a clamping mode and a structure during the single-point diamond turning on the machining precision is highlighted; when two surfaces of a flat workpiece need to be machined, one surface needs to be protected after the surface is machined, because the two surfaces generally have equal thickness requirements, the requirement of equal thickness is difficult to achieve through a traditional polishing mode of coating protective glue, and meanwhile, for a workpiece with a non-circular appearance structure, such as a workpiece to be machined, in a long strip shape, if the workpiece is adsorbed by a vacuum sucker of a single-point diamond turning machine, because the vacuum sucker is generally in a convoluted groove type structure, the vacuum adsorption force is difficult to be uniformly distributed, so that clamping deformation can be caused; all the above problems require a suitable universal tool structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the commonality of required frock when realizing turning different shapes work piece passes through the frock with the work piece and realizes vacuum adsorption (negative pressure adsorbs), reduces the clamping stress that causes because of pressing from both sides tight clamping mode, provides the commonality frock of an available vacuum adsorption mode.
The utility model discloses a solve above-mentioned technical problem through following technical scheme:
a tool structure for ultra-precision turning comprises a tool main body, wherein the tool main body is provided with a workpiece assembling surface contacted with a workpiece to be turned and a machine tool assembling surface contacted with a vacuum chuck of an ultra-precision lathe; a plurality of through holes communicated with the vacuum chuck are formed between the workpiece assembling surface and the machine tool assembling surface; the through hole is provided with continuous or discontinuous internal threads; also comprises a plurality of screws matched with the internal threads.
The radial section of the tool main body is circular, so that dynamic balance can be kept in high-speed rotation.
The through holes are uniformly distributed in a radial shape or in a dot matrix shape from the axis as the center of a circle to the edge.
The through hole is vertical to the workpiece assembling surface and the machine tool assembling surface.
The tool main body is made of metal materials which can be processed by a single-point diamond machine tool such as metal aluminum and copper.
The workpiece assembling surface and the machine tool assembling surface are smooth surfaces.
One end of the screw is provided with an inner hexagonal groove for screwing the screw.
When the threaded through hole is plugged with a mating screw, the through hole will not have an attractive force.
The utility model has the advantages that:
(1) the tool main body can be made of metal materials which can be processed by a single-point diamond machine tool such as metal aluminum, copper and the like, before a workpiece is processed, a machine tool assembly surface and a workpiece assembly surface of the tool can be processed in a turning mode, and a mirror surface can be turned on a surface in contact with the workpiece; when the processed mirror surface is in contact with the mirror surface, the surface of a workpiece cannot be scratched or abraded, and the processing method is particularly suitable for processing a flat sheet with two surfaces needing to be processed and processing an ultrathin reflecting mirror with a plane reference surface.
(2) The through holes in the tool structure are uniformly distributed in a radial mode, ventilation and air cutoff of the threaded through holes can be adjusted according to the appearance of a workpiece, so that uniform stress on the surface of the workpiece is realized, and adsorption stress is reduced.
(3) The through hole outside the workpiece overlapped can be stopped by the screw according to the shape of the workpiece, on one hand, the ventilation part of the through hole is only limited to be contacted with the workpiece, thereby generating enough adsorption force; on the other hand, the balance weight of the screw can be used for realizing dynamic balance when the whole tool main body rotates.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic side view of an embodiment of the present invention;
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic top view of the structure of FIG. 2; (the radial lines and the concentric circles in the drawings are only for the purpose of assisting in explaining the arrangement of the through holes and are not members of actual products)
FIG. 5 is an enlarged schematic view (including a cross-sectional view) of the screw;
in the figure, 10, a tool main body; 11. a workpiece assembly surface; 12. a machine tool assembly surface; 13. a through hole; 20. and (4) screws.
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1-5, a tooling structure for ultra-precision turning comprises a tooling main body 10, wherein the tooling main body 10 is provided with a workpiece assembling surface 11 contacting with a workpiece to be turned and a machine tool assembling surface 12 contacting with a vacuum chuck of an ultra-precision lathe; a plurality of through holes 13 communicated with the vacuum chuck are formed between the workpiece assembling surface 11 and the machine tool assembling surface 12; the through hole 13 is provided with continuous or discontinuous internal threads; and also includes a plurality of screws 20 that mate with the internal threads.
The radial section of the tool body 10 is circular, so that dynamic balance can be kept in high-speed rotation.
The through holes 13 are uniformly distributed in a radial shape (as shown in fig. 4) or in a lattice shape from the axis as the center to the edge.
As shown in fig. 3: the through hole 13 is perpendicular to the workpiece mounting surface 11 and the machine tool mounting surface 12.
The tool main body 10 is made of metal materials which can be processed by a single-point diamond machine tool, such as metal aluminum, copper and the like.
The workpiece assembling surface 11 and the machine tool assembling surface 12 are smooth surfaces.
One end of the screw 20 is provided with an inner hexagonal groove.
When the tool plugs the threaded through hole with a matched screw, the threaded through hole has no adsorption force.
One embodiment is as follows: the machine tool mounting surface 12 is turned into a mirror structure which is in contact with a vacuum chuck of a single point diamond lathe to communicate the through hole 13 with the machine tool mounting surface 12. The workpiece assembling surface 11 is turned into a mirror surface structure and is in contact with a workpiece to be turned, and the through hole 13 is communicated with the vacuum chuck to form negative pressure so as to adsorb the workpiece. The matched screw 20 is matched with the internal thread of the through hole 13, and the screw 20 is mainly used for blocking part of the through hole 13 and also can be used for adjusting a balance weight during dynamic balance.
When the single-point diamond turning machine is used, the workpiece assembly surface 11 is used for supporting a workpiece to be turned and is a surface directly contacted with the workpiece, and the through hole 13 is communicated with a vacuum chuck of the single-point diamond turning machine. After the workpiece is placed on the workpiece mounting surface 11, the through holes 13 outside the contour of the workpiece are all blocked by the screws 20, while the through holes 13 inside the contour of the workpiece do not need to be blocked, depending on the contour of the workpiece to be turned.
If the tool needs to be turned, all the threaded through holes need to be blocked by the matched screws 20. If the shape of the workpiece is an asymmetric structure, when a large balance weight is needed, the dynamic balance weight module of the machine tool can be adjusted, and the dynamic balance can be adjusted by adding the matched screw 20 at the corresponding position in the tool.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. The utility model provides a frock structure for ultra-precision turning which characterized in that: the tool comprises a tool main body, wherein the tool main body is provided with a workpiece assembling surface which is in contact with a workpiece to be turned and a machine tool assembling surface which is in contact with a vacuum chuck of the ultra-precision lathe; a plurality of through holes communicated with the vacuum chuck are formed between the workpiece assembling surface and the machine tool assembling surface; the through hole is provided with continuous or discontinuous internal threads; also comprises a plurality of screws matched with the internal threads.
2. The tooling structure for ultra-precision turning according to claim 1, characterized in that: the radial section of the tool main body is circular.
3. The tooling structure for ultra-precision turning according to claim 1, characterized in that: the through holes are uniformly distributed in a radial shape or in a lattice shape.
4. The tooling structure for ultra-precision turning according to claim 1, characterized in that: the through hole is vertical to the workpiece assembling surface and the machine tool assembling surface.
5. The tooling structure for ultra-precision turning according to claim 1, characterized in that: the tool main body is made of metal materials which can be machined by a single-point diamond machine tool.
6. The tooling structure for ultra-precision turning according to claim 5, characterized in that: the tool main body is selected from metal aluminum and copper.
7. The tooling structure for ultra-precision turning according to claim 1, characterized in that: the workpiece assembling surface and the machine tool assembling surface are smooth surfaces.
8. The tooling structure for ultra-precision turning according to claim 1, characterized in that: one end of the screw is provided with an inner hexagonal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120895602.3U CN213858238U (en) | 2021-04-28 | 2021-04-28 | Tool structure for ultra-precise turning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120895602.3U CN213858238U (en) | 2021-04-28 | 2021-04-28 | Tool structure for ultra-precise turning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213858238U true CN213858238U (en) | 2021-08-03 |
Family
ID=77046219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120895602.3U Active CN213858238U (en) | 2021-04-28 | 2021-04-28 | Tool structure for ultra-precise turning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213858238U (en) |
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2021
- 2021-04-28 CN CN202120895602.3U patent/CN213858238U/en active Active
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