CN216858252U - Bearing seat positioning and mounting structure of numerical control machine tool - Google Patents
Bearing seat positioning and mounting structure of numerical control machine tool Download PDFInfo
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- CN216858252U CN216858252U CN202220390168.8U CN202220390168U CN216858252U CN 216858252 U CN216858252 U CN 216858252U CN 202220390168 U CN202220390168 U CN 202220390168U CN 216858252 U CN216858252 U CN 216858252U
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Abstract
The utility model discloses a bearing seat positioning and mounting structure of a numerical control machine tool, which comprises a machine tool base and two bearing seats fixedly mounted on the machine tool base, wherein the two bearing seats are arranged on the machine tool base in the front and back direction along the length direction of the machine tool base, the axial leads of the two bearing seats are positioned on the same straight line after mounting, one side of the left side and the right side of the machine tool base is provided with a mounting reference surface, the other side of the left side and the right side of the machine tool base is provided with an inclined fixing surface in a processing way, one side of the bearing seat corresponding to the inclined fixing surface is provided with an inclined surface, the bearing seat is mounted in a relative space between the mounting reference surface and the inclined fixing surface and is fixed through screws, one side of the inclined fixing surface, which is far away from the bearing seat, is provided with a pressing block pressed on the inclined fixing surface, and the pressing block is mounted on the machine tool base through fixing screws and is used for pressing the bearing seats; the installation reference surface comprises a first reference surface and a second reference surface, and the first reference surface and the second reference surface are respectively parallel to the guide rail installation surface on the machine tool base.
Description
Technical Field
The utility model relates to the technical field of numerical control machine tool auxiliary devices, in particular to a bearing seat positioning and mounting structure of a numerical control machine tool.
Background
The feeding transmission system of the numerical control machine tool generally comprises a bearing seat at the front end and the rear end, a ball screw, a plurality of bearings and the like. The bearing seat is an important component, and is mainly used for supporting a bearing on the screw rod, fixing an outer ring of the bearing, only allowing an inner ring to rotate, keeping the outer ring still, keeping the same with the rotating direction all the time and keeping balance. The assembly precision of the device directly influences the machining precision and the service life of the machine tool. If the axial lead of the single bearing seat is not parallel to the guide rail, the actual axis of the screw thread after assembly is inclined relative to the guide rail, and the screw nut forces the axial lead of the screw rod to approach an ideal position in the moving process, so that the screw rod generates elastic bending deformation; if the axial leads of the bearing seats at the front end and the rear end are not on the same straight line, the screw rod can be elastically bent and deformed. Lead screw lead errors can be generated when the lead screw is subjected to bending deformation, one side of the nut is abraded due to uneven stress when the nut moves on the lead screw, the gap between the nut and the lead screw can be further aggravated after long-term use, and the use of a machine tool is finally influenced.
When the bearing seat is installed, a special core rod is usually needed to be adopted to ensure that the axial lead of a single bearing seat is parallel to the guide rail and the axial leads of bearing seat holes at the front end and the rear end are in the same straight line in a meter striking mode, if the error is over, a little fixing screw needs to be loosened, one side of the bearing seat is slightly knocked by a copper rod or a nylon rod, and the operation is repeated after the fixing screw is locked again until the requirement is met. The method has high requirements on assembly, has large subjective human factors, is difficult to control the assembly quality and is complicated to install.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a bearing seat positioning and mounting structure of a numerically controlled machine tool, which has a simple structure and higher assembly accuracy, in order to overcome the above-mentioned defects in the prior art.
The utility model aims to solve the technical scheme that the bearing seat positioning and mounting structure of the numerical control machine comprises a machine tool base and two bearing seats fixedly mounted on the machine tool base, wherein the two bearing seats are arranged on the machine tool base in the front-back direction along the length direction of the machine tool base, and the axial leads of the two bearing seats are positioned on the same straight line after installation, one side of the left side and the right side of the machine tool base is provided with an installation reference surface, the other side is provided with an inclined fixed surface, one side of the bearing seat corresponding to the inclined fixing surface is provided with an inclined surface, the bearing seat is arranged in a relative space between the installation reference surface and the inclined fixing surface and is fixed by a screw, one side of the inclined fixing surface, which is far away from the bearing seat, is provided with a pressing block which is pressed on the inclined fixing surface, and the pressing block is installed on the machine tool base through a fixing screw and is used for pressing the bearing seat.
Further, the installation reference surface comprises a first reference surface which is vertically arranged and a second reference surface which is horizontally arranged, and the first reference surface and the second reference surface are respectively parallel to the guide rail installation surface on the machine tool base.
Furthermore, an inward concave groove is formed at the junction of the first datum and the second datum surface.
Further, the inclined fixing surface is a slope surface which is gradually inclined outwards from top to bottom, and the height of the pressing block is larger than that of the slope surface.
The utility model has the beneficial technical effects that: according to the utility model, the machining precision of one side surface of the bearing seat is controlled to be used as a reference surface, the inclined surface is machined on the other side of the bearing seat to be used as a fixed surface, the machining precision of the reference surfaces of the bearing seats at the front end and the rear end of the base is also controlled to ensure that the reference surface is parallel to the guide rail surface, the pressing block with one side surface also being the inclined surface is locked by the screw to press the fixed surface of the bearing seat, and the control precision forms a closed loop, so that the positioning purpose is achieved. Therefore, the assembly time is effectively reduced, and the assembly efficiency and the assembly quality are effectively improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the mounting structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inside", "outside", "lateral", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, the bearing seat positioning and mounting structure of a numerical control machine tool according to the present invention includes a machine tool base 1 and two bearing seats 2 fixedly mounted on the machine tool base 1, the two bearing seats 2 are arranged on the machine tool base 1 in a front-back direction along a length direction of the machine tool base 1, axial lines of the two bearing seats 2 are on a same straight line after mounting, one of left and right sides of the machine tool base 1 is provided with a mounting reference surface, the other side of the machine tool base is provided with an inclined fixing surface 3, one side of the bearing seat 2 corresponding to the mounting reference surface is provided with a matching reference surface, one side corresponding to the inclined fixing surface 3 is provided with an inclined surface, the bearing seat 2 is mounted in a relative space between the mounting reference surface and the inclined fixing surface and fixed by a screw, one side of the inclined fixing surface 3 away from the bearing seat 2 is provided with a pressing block 4 pressed on the inclined fixing surface 3, the pressing block 4 is mounted on the machine tool base 1 through a fixing screw 5 and used for pressing the bearing pedestal 2.
Referring to fig. 1, the installation reference surface comprises a first reference surface 6 which is vertically arranged and a second reference surface 7 which is horizontally arranged, the first reference surface 6 and the second reference surface 7 are respectively parallel to guide rail installation surfaces (a and B) on a machine tool base 1, the reference surface and the guide rail surface of the bearing pedestal 2 are clamped and finished in place at one time, and parallelism between the installation surface of the bearing pedestal 2 and the guide rail is ensured. In addition, the size of the axis of the bearing seat holes at the front end and the rear end from the reference surface is strictly controlled, and the bearing seats are processed in groups, so that the axes are ensured to be on the same straight line and parallel to the guide rail surface after the front bearing seat and the rear bearing seat are installed. And an inwards concave groove is arranged at the junction of the first datum and the second datum surface. The inclined fixing surface is a slope surface which is gradually inclined outwards from top to bottom, and the height of the pressing block is greater than that of the slope surface.
As can be seen from the figure 1, the utility model ensures that the parallelism between the bearing seat mounting surface and the guide rail A, B is ensured by clamping and finishing the reference surface of the bearing seats at two ends and the guide rail surface A, B at one time on the machine tool base, the dimension between the axis of the bearing seat holes at the front end and the rear end and the reference surface is strictly controlled, and the bearing seats are processed in groups, so that the axis is in the same straight line after the front bearing seat and the rear bearing seat are mounted, the inclined surface is processed on the other side surface to be used as a fixed surface, and the fixed surfaces of the front bearing seat and the rear bearing seat are tightly pressed by locking the pressing block of which one side surface is also the inclined surface through the fixing screw, so that the control precision forms a closed loop, thereby achieving the positioning purpose. Therefore, the assembly time is effectively reduced, and the assembly efficiency and the assembly quality are improved.
The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. The utility model provides a bearing frame location mounting structure of digit control machine tool, includes machine tool base and two bearing frames of fixed mounting on this machine tool base, arranges on machine tool base around two bearing frames along machine tool base's length direction, and the axial lead of two bearing frames is in on same straight line after the installation, its characterized in that: one of them one side of both sides is provided with the installation reference surface about the lathe base, and opposite side processing is provided with the slope stationary plane, the bearing frame is provided with the inclined plane corresponding to one side of slope stationary plane, and the bearing frame installation sets up in the relative space between installation reference surface and the slope stationary plane and fixes through the screw, the one side that the slope stationary plane deviates from the bearing frame is provided with the briquetting of crimping on this slope stationary plane, the briquetting is installed on the lathe base through set screw and is used for compressing tightly the bearing frame.
2. A bearing housing positioning and mounting structure of a numerical control machine tool according to claim 1, characterized in that: the mounting reference surface comprises a first reference surface which is vertically arranged and a second reference surface which is horizontally arranged, and the first reference surface and the second reference surface are respectively parallel to the guide rail mounting surface on the machine tool base.
3. A bearing housing positioning and mounting structure of a numerical control machine tool according to claim 2, characterized in that: and an inwards concave groove is arranged at the junction of the first datum and the second datum surface.
4. A bearing housing positioning and mounting structure of a numerical control machine tool according to any one of claims 1 to 3, wherein: the inclined fixing surface is a slope surface which is gradually inclined outwards from top to bottom, and the height of the pressing block is greater than that of the slope surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220390168.8U CN216858252U (en) | 2022-02-25 | 2022-02-25 | Bearing seat positioning and mounting structure of numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220390168.8U CN216858252U (en) | 2022-02-25 | 2022-02-25 | Bearing seat positioning and mounting structure of numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216858252U true CN216858252U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220390168.8U Active CN216858252U (en) | 2022-02-25 | 2022-02-25 | Bearing seat positioning and mounting structure of numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216858252U (en) |
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- 2022-02-25 CN CN202220390168.8U patent/CN216858252U/en active Active
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