CN113910097A

CN113910097A - Bearing raceway super-fine device

Info

Publication number: CN113910097A
Application number: CN202111121570.2A
Authority: CN
Inventors: 王维奇; 邱斌; 刘洋; 王立平; 王敬宇
Original assignee: Dalian Grandway Bearing Co ltd
Current assignee: Dalian Grandway Bearing Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-01-11

Abstract

The invention discloses a bearing raceway super-fine device, which comprises a machine tool body, wherein a headstock is arranged on one side of the machine tool body, a tool clamp is arranged on the headstock, a workpiece is arranged in the tool clamp, a transverse sliding rail is arranged on the machine tool body, a transverse sliding frame is arranged on the transverse sliding rail, and a super-fine component is arranged on the transverse sliding frame through a longitudinal sliding component, the super-fine device can completely cover any raceway shape, no matter a conical raceway or an eccentric R raceway, and can super-fine an outer raceway and an inner raceway of a bearing product, the super-fine device can be used together with any numerical control system machine tool, can be used on a small numerical control machine tool such as K6120, can also be used on a vertical lathe of two meters, is not restricted by specification and model of the product to be processed, realizes super-fine process processing, has strong maneuverability, is convenient and flexible to install and disassemble, the super-precision operation of the bearing raceway which can cover more than 90 percent of specifications.

Description

Bearing raceway super-fine device

Technical Field

The invention relates to the technical field of bearing superfinishing, in particular to a bearing raceway superfinishing device.

Background

The bearing product has certain standard for the roughness of the raceway, and the normal grinding processing procedure of the raceway can only reach the roughness of Ra 0.4. To obtain a better surface roughness, a super-finishing process is required.

Superfinishing refers to a machining method in which a workpiece is rotated at a certain speed under good lubrication conditions, and a fine-grained grindstone is pressed against a workpiece machining surface with a certain pressure and is oscillated back and forth in a direction perpendicular to the rotation direction of the workpiece.

The design and use of the super-precision device can not only meet the requirements of the traditional super-precision process, but also solve the bottleneck problem of super-precision of the CARB series shaft caused by too large curvature of the raceway. Compared with the traditional superfinishing process, the use of the superfinishing machine is more efficient, stable, accurate and stronger in controllability and maneuverability.

The superfinishing of the raceway of a normal bearing product is finished by a raceway superfinishing machine tool. The basic working principle of the superfinishing machine tool is that a mechanical swing arm drives an oilstone to superfinish a workpiece raceway, and when R of the raceway changes, the distance between the mechanical swing arm and the raceway is adjusted correspondingly. Due to the structural limitation of the superfinishing machine, the superfinishing machine can only superfinish the raceway of a small workpiece, and the inner diameter of the processing range is 80mm to 200 mm. The machining range and the position shape of the roller path are also very limited. The tool of the traditional superfinishing machine adopts an electromagnetic positioning cylinder and a positioning fulcrum of a grinding machine, the inner diameter and the outer diameter of a workpiece supported by the positioning fulcrum can be superfinished on the raceway, the inner raceway of a bearing product can only be superfinished, and the outer raceway of the bearing cannot be superfinished. It is not advisable for carburators to have either the inner or outer races for carburators series of bearings.

The working principle of the traditional superfinishing machine is shown in FIG. 3; firstly, the corresponding position of the fulcrum base 06 is adjusted, the fulcrum wheel 05 is abutted against the inner diameter and the outer diameter of the super-finished workpiece concentric with the rotating shaft, the distance between the swing center of the swing arm and the center of the raceway of the super-finished workpiece is adjusted, and then the super-finishing work of the raceway is started. When the swing arm motor 01 rotates and simultaneously drives the swing arm to swing according to a certain frequency, the oilstone 03 in the swing arm is pushed by air pressure to be attached to the surface of the raceway of the workpiece 04 to be superfinished, and superfinishing is performed through the autobiography of the workpiece 04 and the swing of the swing arm 02.

As can be seen from the above figure, as the size and dimension of the workpiece 04 to be superfinished change, the position of the swing arm 02 relative to the workpiece 04 also needs to be adjusted. In actual production, the practical adjustable space of the swing arm 02 is limited and can be adjusted between 50mm and 200mm, and due to the positioning mode of the machine tool, the supporting point has destructive damage to the roller path under the condition that the superfinished product has no inner diameter and no outer diameter. And the machine tool can only perform superfinishing work on the raceway of products below 24032 due to low motor power. The biggest defect of the traditional superfinishing machine tool is that only the inner roller path of a product to be superfinished can be superfinished, but not the outer roller path. From the above conclusions, the functional singleness and limitation of the conventional superfinishing machine tool cannot meet the actual production requirements.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a bearing raceway superfinishing machine, which solves the problems that the existing superfinishing machine tool only can perform inner raceway superfinishing and has higher singleness and limitation.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a bearing raceway super-fine device, includes the lathe bed, lathe bed one side is equipped with the headstock, be equipped with frock clamp on the headstock, be equipped with the work piece in the frock clamp, be equipped with horizontal slide rail on the lathe bed, be equipped with horizontal balladeur train on the horizontal slide rail, install super smart subassembly through vertical sliding assembly on the horizontal balladeur train.

Preferably, the longitudinal sliding assembly comprises a longitudinal sliding rail arranged on the transverse sliding frame, and a longitudinal sliding block is arranged on the longitudinal sliding rail.

Preferably, the super-precision assembly comprises a super-precision mechanical arm fixedly connected with the longitudinal sliding block, and an oilstone is mounted at the end of the super-precision mechanical arm.

Preferably, the transverse slide rail is perpendicular to the opposite surface of the longitudinal slide rail.

Advantageous effects

The invention discloses a bearing raceway super-fine device, which has the following beneficial effects: can cover arbitrary raceway shape completely, no matter be circular cone raceway or eccentric R raceway, and can super smart to the outer raceway and the interior raceway of bearing product, this super smart ware can use with arbitrary numerical control system machine tool online, can use on the small-size numerical control machine tool such as CJK6120, also can use on the merry go round machine of two meters, do not receive the restraint of the specification model of the product of being processed simultaneously, realize super smart process processing, need not the location support and do not cause the damage to by super smart work piece, the strong installation of mobility is dismantled convenient and flexibly, can cover the super smart work of the bearing raceway of more than 90% specification.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial structural schematic diagram of the present invention.

Fig. 3 is a prior art structural view.

In the figure: 1. a machine tool body; 2. a headstock; 3. a tooling fixture; 4. a workpiece; 5. a transverse slide rail; 6. a transverse carriage; 7. a longitudinal slide rail; 8. a longitudinal slide block; 9. a superfinishing mechanical arm; 10. and (4) oilstone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a bearing raceway super-fine device comprises a machine tool body 1, wherein a headstock 2 is arranged on one side of the machine tool body 1, a tool clamp 3 is arranged on the headstock 2, a workpiece 4 is arranged in the tool clamp 3, a transverse slide rail 5 is arranged on the machine tool body 1, a transverse slide frame 6 is arranged on the transverse slide rail 5, and a super-fine assembly is arranged on the transverse slide frame 6 through a longitudinal slide assembly; the longitudinal sliding assembly comprises a longitudinal sliding rail 7 arranged on the transverse sliding frame 6, and a longitudinal sliding block 8 is arranged on the longitudinal sliding rail 7; the super-precision assembly comprises a super-precision mechanical arm 9 fixedly connected with the longitudinal sliding block 8, and an oilstone 10 is mounted at the end part of the super-precision mechanical arm 9; the transverse slide rail 5 is perpendicular to the longitudinal slide rail 7 in different planes.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.

Example (b): selecting oilstones with corresponding granularity and hardness according to the shape and technical requirements of a raceway of the bearing respectively, and filling the oilstones into the super-precision component; and selecting corresponding on-line equipment and corresponding workpiece tools according to the specification and model of different products to be superfinished, and setting a system program. And controlling the running track of the super-precision device through the system on line. The superfinishing device can achieve superfinishing of any shape of a roller path, can be carried on any numerical control machine tool due to flexibility of the superfinishing device, and can achieve the purpose that the direction of an outer roller path of a workpiece to be superfinished can be adjusted only by controlling the direction of a superfinishing component when the superfinishing device performs superfinishing, a transverse sliding rail and a transverse sliding frame control Z-axis feeding, a longitudinal sliding rail and a longitudinal sliding block control X-axis feeding and synchronous cross feeding of an X-axis and a Z-axis.

The actual use effect is as follows:

24032TYV.02 (bearing inner sleeve) is taken as a target product in a workshop site, and the design process of the product requires that the roughness Ra is 0.2R 404, and the number of the product in the experiment is 800. The self-developed superfinishing unit was fitted using a Shenyang i5 system numerically controlled lathe.

The surface roughness of the superfinished product is measured as follows:

[ all the monitoring data come from German Mark profile detector in measuring room ]

According to the statistical data, the surface roughness of the ultra-refined product is remarkably improved, and the ultra-refined product can be stably controlled within the range required by the design process; the shape R of the roller path is compared before and after superfinishing, and the groove shape after superfinishing is not only not damaged, but also improved to a certain extent. And the superfinishing range is expanded while the data is collected and sorted, and the outer groove of the outer sleeve of the 25918TYV sleeve, 170TDI260.02 double-row binding machine is taken as an experimental target product to superfinish the raceway of the product. And adjusting and manufacturing the super-precision device to finish the experimental data acquisition of the target product. Through a large amount of data acquisition and comparison and experimental production, the stable control of the roughness can be completely realized. The data are obtained in the experimental production process, and random detected roughness values occasionally have individual phenomena of out-of-tolerance, and the occurrence of the phenomena is related to the surface roughness after grinding in the previous process of the roller path.

By combining the data comparison of actual production, the novel developed super-fine device can completely reach the design standard of the development of the adjustable bearing raceway (inner raceway and outer raceway) and the rolling mill bearing (inner raceway and outer raceway) bearing raceway super-fine device of the conical bearing (inner raceway and outer raceway), and meets the process requirements. The super smart ware compares with traditional super smart machine:

the defects of the traditional superfinishing machine tool are 1, a supporting point 2 is needed for a positioning tool, 3 is the adjustable range of the shape R of a roller path, only superfinishing can be carried out on an inner roller path of a workpiece to be superfinished 4, and superfinishing cannot be carried out on the roller path of a large workpiece

The superfinishing machine has the advantages of 1. superfinishing any channel shape 2. superfinishing the outer raceway of the workpiece to be superfinished 3. no need of positioning and supporting to damage the workpiece to be superfinished 4. convenient and flexible use, strong maneuverability 5. no limitation of specification and model of the workpiece to be superfinished

The comparison shows that the novel developed super-fine device can realize stable and accurate super-fine processing on the bearing raceway (inner raceway and outer raceway) of the adjusting spindle and the rolling mill bearing (inner raceway and outer raceway), and the development of the super-fine device of the bearing raceway completely reaches the design standard and meets the process requirements. The invention of the super-fine device not only can make up the defects of the traditional super-fine machine, but also breaks through the bottleneck of the super-fine process.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bearing raceway super smart ware, its characterized in that, includes lathe bed (1), lathe bed (1) one side is equipped with headstock (2), be equipped with frock clamp (3) on headstock (2), be equipped with work piece (4) in frock clamp (3), be equipped with transverse sliding rail (5) on lathe bed (1), be equipped with transverse sliding rack (6) on transverse sliding rail (5), install super smart subassembly through longitudinal sliding subassembly on transverse sliding rack (6).

2. A bearing race ultrafinish device according to claim 1, characterized in that said longitudinal sliding assembly comprises a longitudinal slide (7) provided on said transversal carriage (6), said longitudinal slide (7) being provided with a longitudinal slider (8).

3. A bearing raceway superfinishing apparatus according to claim 2, characterised in that the superfinishing assembly comprises a superfinishing arm (9) fixedly connected to the longitudinal slide (8), an oilstone (10) being mounted at an end of the superfinishing arm (9).

4. A bearing race ultrafinish device according to claim 3, characterized in that said transverse slide rails (5) are out-of-plane perpendicular to said longitudinal slide rails (7).