CN212496837U - Grinding device based on large-convexity tapered roller outer diameter - Google Patents
Grinding device based on large-convexity tapered roller outer diameter Download PDFInfo
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- CN212496837U CN212496837U CN202020874721.6U CN202020874721U CN212496837U CN 212496837 U CN212496837 U CN 212496837U CN 202020874721 U CN202020874721 U CN 202020874721U CN 212496837 U CN212496837 U CN 212496837U
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Abstract
The utility model discloses a grinding device based on large-convexity tapered roller external diameter, which utilizes a centerless grinder to grind and position a grinding wheel, a guide wheel and a guide plate, adopts an incision method to finish the grinding of the tapered roller external diameter, changes the supporting angle of the existing guide plate, increases the supporting angle of the existing guide plate, presses the component force which increases the self weight of the roller to the guide wheel, namely increases the contact friction force between the guide wheel and the roller, and realizes the rotation of a driving roller; the contact area of the existing guide plate and the roller is changed, the alloy rod is embedded on the supporting inclined plane of the guide plate, and the linear contact between the guide plate and the outer diameter of the roller is changed into the point contact between the cylindrical surface of the alloy rod and the outer diameter of the roller, so that the contact area is reduced, and the roller is convenient to drive to rotate. The utility model discloses a to the change of baffle positioning method and structure, make the guide pulley just can drive when starting the rotation and be rotary motion by processing roller, realized that the emery wheel feeds grinding for a short time and no spark grinding, improved the machining precision of roller, machining efficiency and processingquality's stability.
Description
The technical field is as follows:
the utility model relates to a tapered roller grinding equipment especially relates to a based on big convexity tapered roller external diameter grinding device.
Background art:
the convexity of the outer diameter prime line of the tapered roller is usually small, the convexity is generally 0.02mm-0.04mm, the convexity is realized by a centerless cylindrical grinder or a superfinishing machine tool, and the processing precision can meet the requirement of a drawing. With the continuous development of national economy, the demand of the tapered roller with large convexity (convexity is 0.14mm) and high precision in the high-end market is more and more, namely the high-precision machining precision of the tapered roller with large convexity cannot meet the requirement of a process drawing, and the tapered roller with large convexity is a difficult problem and a development trend which need to be solved in the bearing industry of China and even in the future.
At present, the basic structure of centerless grinder grinding location: the grinding wheel, the guide plate and the annular workpiece to be processed are combined (as shown in figure 1), and the high-precision grinding of the outer diameter of the large-convexity tapered roller is completed by a cutting-in method so as to meet the precision requirement of a process drawing.
As can be seen from fig. 1: the guide wheel rotates clockwise, under the action of friction force between the guide wheel and the roller, the friction resistance between the roller and the guide plate is overcome, the roller is driven to rotate anticlockwise, the grinding wheel rotates clockwise, and meanwhile, grinding feeding motion is carried out, so that grinding machining is achieved. It has the problems that: firstly, the guide wheel cannot drive the processed roller to rotate, and only when the grinding wheel realizes feed grinding and reaches a certain grinding spark (reaches a certain contact extrusion force), the roller can be driven to rotate to carry out roller circumferential grinding movement. And secondly, the outer diameter prime line of the roller is a straight line before the roller is processed in the final grinding procedure, and the outer diameter prime line of the roller after grinding is a logarithmic curve with large convexity. Due to the above grinding phenomenon, during grinding, (-) small feed grinding and spark-free (no feed) grinding cannot be realized. Secondly, during grinding of the roller to be machined, the roller outer diameter positioning is gradually changed from a straight line to a logarithmic curve, namely, the guide plate supporting plane causes instability of roller outer diameter convexity in the machining positioning. So that the roundness of the processed roller can not meet the precision requirement that the technical drawing is less than or equal to 0.001 mm.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the defects of the prior art are overcome, and the grinding device based on the outer diameter of the large-convexity tapered roller is reasonable in design, can promote the rotation of the roller and improves the processing precision.
The technical scheme of the utility model is that:
a grinding device based on the outer diameter of a large-convexity tapered roller comprises a grinding wheel, a guide wheel and a guide plate which are positioned by a centerless grinder in a grinding mode, wherein the support angle of the guide plate is 40-50 degrees, alloy rods are arranged on the guide plate at intervals, so that the linear contact between the guide plate and the outer diameter of the roller is changed into point contact between the cylindrical surface of the alloy rods and the outer diameter of the roller, the contact area is reduced, the friction resistance is reduced, and the roller is driven to rotate conveniently.
The two alloy rods are respectively positioned at two end faces of the tapered roller, so that the gravity center of the tapered roller is positioned between the two alloy rod supporting points and does not change along with the external diameter prime line of the tapered roller to form a large-convexity curve, and the tapered roller is in a stable state during rotation. The support angle of the guide plate is 42 degrees, 45 degrees, 47 degrees or 49 degrees.
The utility model has the advantages that:
1. the utility model discloses a to the change of baffle positioning method and structure, make the guide pulley just can drive when starting the rotation and be rotary motion by processing roller, realized that the emery wheel feeds grinding for a short time and no spark grinding, improved the machining precision of roller, machining efficiency and processingquality's stability.
2. The utility model discloses rationally select baffle supporting angle, the component force that increases roller self weight removes to press to the guide pulley, increases the contact friction between guide pulley and roller promptly to it is rotatory to realize driving roller.
3. The utility model discloses inlay the alloy stick on baffle supporting inclined plane, by the line contact between baffle face and roller external diameter, change into the point contact between alloy stick face of cylinder and roller external diameter, reduce its area of contact, reduce its frictional resistance promptly to it is rotatory to drive the roller.
4. The utility model discloses with two alloy bar contacts on the baffle holding surface in roller both ends face department, make the roller focus be in two alloy bar fulcrums in the middle of, do not be along with the change that the plain line of roller external diameter is big convexity curve, make the roller be in among the stable state when rotatory.
5. The utility model relates to a rationally, can promote the roller rotatory and improve the machining precision, solve the machining precision of big convexity tapered roller external diameter on centerless grinder, satisfy the problem that the circularity of process drawing is less than or equal to 0.001 mm. Is convenient to realize and popularize and has higher economic benefit and social benefit.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a prior art tapered roller outer diameter grinding device;
FIG. 2 is a schematic structural diagram of a grinding device based on the outer diameter of a large-convexity tapered roller;
fig. 3 is a side view of the guide plate and the tapered rollers of fig. 2.
The specific implementation mode is as follows:
example (b): referring to fig. 1-3, in the figure, 1-grinding wheel, 2-tapered roller, 3-alloy rod, 4-guide plate and 5-guide wheel.
Based on big convexity tapered roller external diameter grinding device, utilize emery wheel 1, guide pulley 5 and baffle 4 of centerless grinder grinding location, adopt to cut into the method and accomplish the 2 external diameter grinding of tapered roller, wherein, guide pulley 5 clockwise rotation, under the frictional force effect between guide pulley 5 and tapered roller 2, and overcome frictional resistance between tapered roller 2 and baffle 4, drive tapered roller 2 and be anticlockwise rotary motion, emery wheel 1 is clockwise rotation, carries out grinding feed motion simultaneously, realizes abrasive machining, the utility model discloses start with the structure from 4 supporting methods of baffle: the driving force of the guide wheel 5 and the roller 2 is increased, the supporting angle of the guide plate 4 is reasonably selected, the supporting angle of the guide plate 4 is changed from 30 degrees (shown in figure 1) to 45 degrees, the component force of the self weight of the roller is increased to press the guide wheel 5, namely, the contact friction force between the guide wheel 5 and the roller 2 is increased, and the roller is driven to rotate. Secondly, the frictional resistance between the guide plate 4 and the roller 2 is reduced to reduce the driving force for driving the roller 2, the contact area between the guide plate 4 and the roller 2 is reasonably selected, the alloy rod 3 (shown in figure 2) is embedded on the 45-degree supporting inclined plane of the guide plate, and the linear contact between the 45-degree surface of the guide plate and the outer diameter of the roller is changed into the point contact between the cylindrical surface of the alloy rod 3 and the outer diameter of the roller, so that the contact area, namely the frictional resistance, is reduced, and the roller is driven to rotate. And thirdly, the rotating stability of the roller is increased to stabilize the processing quality of the roller, the rotating stability of the roller between the guide plates is reasonably selected, two alloy rods 3 on the bearing surface of the guide plate 4 are contacted with two end surfaces of the roller (as shown in figure 3), so that the gravity center of the roller 2 is positioned between the pivots of the two alloy rods 3 and does not change along with the large-convexity curve of the outer diameter prime line of the roller, and the roller is in a stable state during rotation.
Through the change of the positioning method and the structure of the guide plate, the roller realizes the following in the processing process: the guide wheel 5 can drive the processed roller 2 to do rotary motion when starting to rotate, so that the small-feed grinding and the spark-free grinding of the grinding wheel 1 are realized, the processing precision, the processing efficiency and the stability of the processing quality of the roller 2 are improved, the processing roundness of the outer diameter of the roller is improved to 0.5-1 mu m from the original 1-5 mu m, and the requirement of the roundness of a process drawing sheet of 1 mu m is met.
The supporting angle of the guide plate can be selected to be 42 °, 46 °, 47 °, or 49 ° according to the requirement, which is not described in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a grinding device based on big convexity tapered roller external diameter, includes emery wheel, guide pulley and the baffle of centerless grinder grinding location, characterized by: the supporting angle of the guide plate is 40-50 degrees, the alloy rods are arranged on the guide plate at intervals, and the cylindrical surfaces of the alloy rods are in point contact with the outer diameter of the roller, so that the contact area of the alloy rods is reduced, the friction resistance of the alloy rods is reduced, and the roller is driven to rotate conveniently.
2. The grinding device based on the external diameter of the tapered roller with large convexity according to claim 1, wherein: the two alloy rods are respectively positioned at two end faces of the tapered roller, so that the gravity center of the tapered roller is positioned between the two alloy rod supporting points and does not change along with the external diameter prime line of the tapered roller to form a large-convexity curve, and the tapered roller is in a stable state during rotation.
3. The grinding device based on the external diameter of the tapered roller with large convexity according to claim 1, wherein: the support angle of the guide plate is 42 degrees, 45 degrees, 47 degrees or 49 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020874721.6U CN212496837U (en) | 2020-05-22 | 2020-05-22 | Grinding device based on large-convexity tapered roller outer diameter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020874721.6U CN212496837U (en) | 2020-05-22 | 2020-05-22 | Grinding device based on large-convexity tapered roller outer diameter |
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| CN212496837U true CN212496837U (en) | 2021-02-09 |
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| CN202020874721.6U Active CN212496837U (en) | 2020-05-22 | 2020-05-22 | Grinding device based on large-convexity tapered roller outer diameter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546149A (en) * | 2020-05-22 | 2020-08-18 | 洛阳汇工轴承科技有限公司 | Method and device for grinding outer diameter of tapered roller based on large convexity |
| CN115870819A (en) * | 2022-12-02 | 2023-03-31 | 哈尔滨工业大学 | Device and method for grinding small-diameter cylindrical workpiece made of hard and brittle material |
-
2020
- 2020-05-22 CN CN202020874721.6U patent/CN212496837U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546149A (en) * | 2020-05-22 | 2020-08-18 | 洛阳汇工轴承科技有限公司 | Method and device for grinding outer diameter of tapered roller based on large convexity |
| CN111546149B (en) * | 2020-05-22 | 2022-01-18 | 洛阳汇工轴承科技有限公司 | Method and device for grinding outer diameter of tapered roller based on large convexity |
| CN115870819A (en) * | 2022-12-02 | 2023-03-31 | 哈尔滨工业大学 | Device and method for grinding small-diameter cylindrical workpiece made of hard and brittle material |
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