CN216371238U - Zero point positioning and clamping mechanism - Google Patents
Zero point positioning and clamping mechanism Download PDFInfo
- Publication number
- CN216371238U CN216371238U CN202121759601.2U CN202121759601U CN216371238U CN 216371238 U CN216371238 U CN 216371238U CN 202121759601 U CN202121759601 U CN 202121759601U CN 216371238 U CN216371238 U CN 216371238U
- Authority
- CN
- China
- Prior art keywords
- positioning
- zero point
- clamping mechanism
- wear
- precision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
A zero point positioning and clamping mechanism belongs to the technical field of positioning and locking of a machining center workbench, and particularly relates to a zero point positioning and clamping mechanism. The utility model provides a zero point positioning and clamping mechanism capable of efficiently and stably realizing exchange of a machine tool workbench. The utility model comprises a workbench, and is characterized in that: the bottom of the workbench is provided with an electric permanent magnetic chuck, and the upper surface of the electric permanent magnetic chuck is provided with at least two precise positioning pins; the bottom of the workbench is provided with a positioning hole corresponding to the precision positioning pin, and a wear-resistant positioning sleeve matched with the precision positioning pin is arranged in the positioning hole.
Description
Technical Field
The utility model belongs to the technical field of positioning and locking of a machining center workbench, and particularly relates to a zero point positioning and clamping mechanism.
Background
With the rapid development of the processing and manufacturing industry, the demand for a processing center with a workbench exchange function is increasingly obvious. The exchange workbench for the machining center has the functions of increasing the machining time of the machine tool and reducing the downtime caused by workpiece clamping.
The efficiency of the exchange workbench is very high, and the clamp in the machine tool can be replaced very quickly. The problem of positioning and tensioning the worktable must be faced when the worktable is required to be exchanged, and the zero point positioning technology of the worktable is required to be adopted to solve the problem.
Disclosure of Invention
The utility model aims to solve the problems and provides a zero point positioning and clamping mechanism capable of efficiently and stably realizing the exchange of a machine tool workbench.
In order to achieve the above purpose of the present invention, the present invention adopts the following technical scheme, and the present invention comprises a workbench, and is characterized in that: the bottom of the workbench is provided with an electric permanent magnetic chuck, and the upper surface of the electric permanent magnetic chuck is provided with at least two precise positioning pins; the bottom of the workbench is provided with a positioning hole corresponding to the precision positioning pin, and a wear-resistant positioning sleeve matched with the precision positioning pin is arranged in the positioning hole.
As a preferable scheme of the utility model, the number of the precise positioning pins is four, and the positioning holes and the wear-resistant positioning sleeves correspond to the precise positioning pins.
Further, the position precision of the precision positioning pin is higher than 0.02 mm.
As another preferable scheme of the utility model, the wear-resistant locating sleeve and the precision locating pin are subjected to quenching treatment.
As a third preferred scheme of the utility model, the hardness of the precision positioning pin is higher than that of the wear-resistant positioning sleeve.
Furthermore, the hardness of the precision positioning pin is higher than the hardness HRC5 of the wear-resistant positioning sleeve.
As a fourth preferred scheme of the present invention, the wear-resistant positioning sleeve and the precision positioning pin are both provided with a conical guide section and a cylindrical guide section, and the length of the conical guide section is greater than that of the cylindrical guide section.
In a fifth preferred embodiment of the present invention, the positioning hole of the table is a bearing ring or a structure in which a needle bearing is directly mounted.
As a sixth preferred scheme of the utility model, the precise positioning pin of the electric permanent magnetic chuck is made of high-hardness cold-work grinding tool steel.
The utility model has the beneficial effects that: the utility model adopts the electric permanent magnetic chuck to realize the tensioning of the workbench, adopts the over-positioning cylindrical pin to realize the accurate positioning of the workbench, adopts the design concept that each degree of freedom is respectively positioned, and the tensioning force realizes the separation of the mechanism and the positioning mechanism, ensures the quick and stable positioning of the machine tool workbench, ensures the exchange precision of the machine tool workbench to the maximum extent, and improves the overall performance of the machine tool.
The tensioning structure of the utility model adopts the electric permanent magnetic chuck, has simple structure, common and easily obtained materials and lower implementation cost.
The zero-point positioning device is simple and convenient to apply, low in cost and high in efficiency, effectively solves the problem of high cost of the conventional zero-point positioning device of the machining center compared with other zero-point positioning structures, and ensures the precision stability of the machining center; the zero point positioning structure has obvious advantages in cost performance and has great significance for processing and manufacturing industries.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of fig. 1.
In the attached drawing, 1 is a workbench, 2 is a wear-resistant positioning sleeve, 3 is a precision positioning pin, and 4 is an electric permanent magnetic chuck.
Detailed Description
The utility model comprises a workbench 1, and is characterized in that: the bottom of the workbench 1 is provided with an electric permanent magnetic chuck 4, and the upper surface of the electric permanent magnetic chuck 4 is provided with at least two precise positioning pins 3; the bottom of the workbench 1 is provided with a positioning hole corresponding to the precision positioning pin 3, and a wear-resistant positioning sleeve 2 matched with the precision positioning pin 3 is arranged in the positioning hole.
As a preferred scheme of the present invention, the four precision positioning pins 3 are circumferentially arranged, and the positioning holes and the wear-resistant positioning sleeves 2 correspond to the precision positioning pins 3.
Further, the position accuracy of the precision positioning pin 3 is higher than 0.02 mm.
As another preferable scheme of the utility model, the wear-resistant locating sleeve 2 and the precision locating pin 3 are subjected to quenching treatment.
As a third preferred aspect of the present invention, the hardness of the precision positioning pin 3 is higher than that of the wear-resistant positioning sleeve 2.
Furthermore, the hardness of the precision positioning pin 3 is higher than the hardness HRC5 of the wear-resistant positioning sleeve 2.
As a fourth preferred scheme of the present invention, the wear-resistant positioning sleeve 2 and the precision positioning pin 3 are both provided with a conical guide section and a cylindrical guide section, and the length of the conical guide section is greater than that of the cylindrical guide section.
As a fifth preferred solution of the present invention, the positioning holes of the worktable 1 adopt a bearing ring or a structure of directly installing a needle bearing, so as to increase the service life of the exchange worktable 1.
As a sixth preferred scheme of the utility model, the precise positioning pin 3 of the electric permanent magnetic chuck 4 is made of high-hardness cold-work grinding tool steel.
In general, 2 exchangeable work tables 1 are arranged on a machine tool, when the work tables 1 need to be exchanged, the electro-permanent magnetic chuck 4 is demagnetized, the machine tool exchange mechanism lifts the work table 1, rotates to exchange and places another work table 1 needing to be exchanged on the electro-permanent magnetic chuck 4 along the precision positioning pin 3, at the moment, the electro-permanent magnetic chuck 4 is magnetized to tighten the work table 1, and the exchange process is completed.
It can be imagined that, in order to guarantee the life of part, wear-resisting position sleeve 2 and precision alignment pin 3 all need carry out quenching heat treatment, and because the structure has caused two workstations 1 to correspond an electromagnetic chuck 4, so precision alignment pin 3's hardness is higher than wear-resisting position sleeve 2's hardness, and the hardness difference is more than HRC 5.
Because the over-positioning structure of 4 positioning pins 3 is adopted to ensure the repeated positioning accuracy of the workbench 1, the position accuracy of the precise positioning pin 3 is higher than 0.02 mm. For the more steady exchange of carrying out workstation 1, all set up longer circular cone direction section and shorter cylinder direction section on wear-resisting position sleeve 2, the precision positioning pin 3.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.
Claims (9)
1. The utility model provides a zero point positioning clamping mechanism, includes workstation (1), its characterized in that: an electric permanent magnetic chuck (4) is arranged at the bottom of the workbench (1), and at least two precise positioning pins (3) are arranged on the upper surface of the electric permanent magnetic chuck (4); the bottom of the workbench (1) is provided with a positioning hole corresponding to the precision positioning pin (3), and a wear-resistant positioning sleeve (2) matched with the precision positioning pin (3) is arranged in the positioning hole.
2. The zero point positioning and clamping mechanism according to claim 1, wherein: the precise positioning pins (3) are arranged in a rectangular shape, and the positioning holes and the wear-resistant positioning sleeves (2) correspond to the precise positioning pins (3).
3. The zero point positioning and clamping mechanism according to claim 2, wherein: therefore, the position precision of the precision positioning pin (3) is lower than 0.02 mm.
4. The zero point positioning and clamping mechanism according to claim 1, wherein: the wear-resistant positioning sleeve (2) and the precision positioning pin (3) are quenched.
5. The zero point positioning and clamping mechanism according to claim 1, wherein: the hardness of the precise positioning pin (3) is higher than that of the wear-resistant positioning sleeve (2).
6. The zero point positioning and clamping mechanism according to claim 5, wherein: the hardness of the precision positioning pin (3) is higher than the hardness HRC5 of the wear-resistant positioning sleeve (2).
7. The zero point positioning and clamping mechanism according to claim 1, wherein: wear-resisting position sleeve (2) and accurate locating pin (3) are gone up and all are set up circular cone direction section and cylinder direction section, and the length of circular cone direction section is greater than the length of cylinder direction section.
8. The zero point positioning and clamping mechanism according to claim 1, wherein: the positioning hole of the working table (1) adopts a structure of a bearing ring or a needle bearing which is directly installed.
9. The zero point positioning and clamping mechanism according to claim 1, wherein: the precise positioning pin (3) of the electric permanent magnetic chuck (4) is made of high-hardness cold-work grinding tool steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759601.2U CN216371238U (en) | 2021-07-30 | 2021-07-30 | Zero point positioning and clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121759601.2U CN216371238U (en) | 2021-07-30 | 2021-07-30 | Zero point positioning and clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216371238U true CN216371238U (en) | 2022-04-26 |
Family
ID=81239641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121759601.2U Active CN216371238U (en) | 2021-07-30 | 2021-07-30 | Zero point positioning and clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216371238U (en) |
-
2021
- 2021-07-30 CN CN202121759601.2U patent/CN216371238U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201357251Y (en) | Drill jig for machining cylinder head hole | |
| CN104959864A (en) | Numerical control machine tool clamp | |
| CN112917202A (en) | Automatic aligning and clamping device and method for annular part | |
| CN216371238U (en) | Zero point positioning and clamping mechanism | |
| CN214559175U (en) | Automatic aligning and clamping device for ring-shaped parts | |
| CN2468655Y (en) | Quick action and pneumatic type clamping means | |
| CN210878692U (en) | Blade work piece is from centering fast-assembling anchor clamps | |
| CN202388282U (en) | Machine tool fixture for secondary clamping of large workpieces | |
| CN208801074U (en) | Irregular part fast-clamping clamp | |
| CN215393844U (en) | Boring machine fixture for machining two holes of support shell | |
| CN210388439U (en) | Pneumatic combined clamp suitable for small and micro parts | |
| CN216442030U (en) | Jig clamping plate tool for machining path with circle center | |
| CN219648746U (en) | Hydraulic clamp for drilling shaft parts with two gear rings | |
| CN216097694U (en) | Special machine for milling concave table plane rotary table of clutch cover | |
| CN220921613U (en) | Cone workpiece clamp | |
| CN108907815A (en) | Irregular part fast-clamping clamp | |
| CN220113066U (en) | Positioning device for polishing mechanical sealing piece | |
| CN218193839U (en) | A exchange lock mouth for multistation | |
| CN218193892U (en) | Multi-station fixture base | |
| CN217291439U (en) | External correction and rapid clamping tool for wind power torque arm | |
| CN220880657U (en) | Clamp for processing holes in batches through retainer rings | |
| CN213827089U (en) | Four-corner clamping jaw | |
| CN216371217U (en) | Multi-axis machining center tooling fixture and machining center | |
| CN214722567U (en) | Lathe fixture applied to numerical control precision machining | |
| CN215357327U (en) | Fixing device for drilling of supporting rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |