JP2007024098A - Method of manufacturing rolling bearing sleeve member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce raw material cost for a rolling bearing sleeve member. <P>SOLUTION: The method of manufacturing the sleeve member comprises bending a flat steel plate into a cylindrical shape, welding its peripherally abutting portions to each other and forming the outer shape of the sleeve member with grinding work in this state, and then cutting the welded portions to form a cut-slit. Thus, the flat steel plate can be used as a raw material which is more inexpensive than a pipe material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method of manufacturing a sleeve member for a rolling bearing such as an adapter sleeve or a removal sleeve used for mounting a rolling bearing having a tapered hole to an outer peripheral surface of a shaft.

  When a rolling bearing having an inner peripheral surface of the inner ring having a tapered hole is attached to the outer peripheral surface of the shaft, a sleeve member such as an adapter sleeve or a removal sleeve is used. FIGS. 2A and 2B show an example of the adapter sleeve 1, and FIGS. 3A and 3B show an example of the removal sleeve 2. Both the adapter sleeve 1 and the removal sleeve 2 have tapered surfaces 1a, 2a and male thread portions 1b, 2b that fit into the tapered holes of the bearing inner ring on the outer peripheral surface, and have a predetermined width in the axial direction. Is formed.

  When manufacturing such a sleeve member for a rolling bearing, generally, a pipe material is used as a material, and after turning the pipe material to form an outer shape of the sleeve member, an arbitrary position in the circumferential direction is cut. The cut is formed. Here, carbon steel etc. are used as a material of a pipe material (refer patent document 1).

However, the expensive pipe material is a major factor that raises the manufacturing cost of the sleeve member, and a reduction in material cost is required.
JP-A-11-264421 (paragraph number 0020)

  The subject of this invention is aiming at reduction of the raw material cost of the sleeve member for rolling bearings.

  In order to solve the above-mentioned problems, the present invention uses a flat steel plate as a material for a sleeve member, and in a state in which the flat steel plate is bent into a cylindrical shape and welded together in the circumferential direction, the sleeve is formed by turning. After forming the outer shape of the member, the welded position was cut to form a cut.

  That is, paying attention to the fact that the sleeve member is cut in the axial direction, the flat steel plate is bent into a cylindrical shape and turned to form a cut in the circumferentially abutted position. This makes it possible to use flat steel sheets that are cheaper than pipe materials. In addition, turning is performed in a state in which the circumferentially abutted portions are welded so that the same dimensional accuracy as when pipe material is used is obtained, and then the welding position is cut and cut. As a result, the welded parts with low strength were not left in the product.

  In the sleeve member manufacturing method of the present invention, as described above, a flat steel plate is bent into a cylindrical shape and turned to form a cut at a position abutted in the circumferential direction. Compared to the case, the material cost can be greatly reduced. In addition, material availability can be greatly improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a procedure of a method for manufacturing a rolling bearing sleeve member of an embodiment targeting the adapter sleeve 1 shown in FIG. 2 and the removal sleeve 2 shown in FIG.

  In this sleeve member manufacturing method, a flat steel plate is used as a material. First, the flat steel plate is bent into a cylindrical shape (S1), and the portions (side end surfaces of the flat steel plate before bending) that are abutted in the circumferential direction are welded together. Thus, a cylindrical semi-finished product is produced (S2). Next, the inner peripheral surface, outer peripheral surface, and both end surfaces of this cylindrical semi-finished product are turned with a lathe, and the sleeve including the tapered surfaces 1a, 2a and the external thread portions 1b, 2b shown in FIG. The outer shape of the member is formed (S3). Finally, the welding position of the cylindrical semi-finished product that has undergone turning is cut with a foil cutter or the like to form the cuts 1c and 2c shown in FIG. 2 or FIG. 3 (S4). can get.

  If this manufacturing method is adopted, since an inexpensive flat steel plate can be used as a material, the material cost can be greatly reduced, and the availability of the material is also greatly improved. In addition, the dimensional accuracy and strength quality of the sleeve member is almost the same as when pipe material is used.

  The present invention is arranged not only in the general adapter sleeve and the removal sleeve as described above, but also between the outer ring and the fixing member or between the inner ring and the shaft for attachment to the shaft of the rolling bearing, The present invention can be widely applied in the case of manufacturing a sleeve member that is cut in the axial direction.

The flowchart which shows the procedure of the manufacturing method of the sleeve member of embodiment. a is an external perspective view showing an example of an adapter sleeve, and b is a longitudinal sectional view of a. a is an external perspective view showing an example of a removal sleeve, and b is a longitudinal sectional view of a.

Explanation of symbols

1 Adapter sleeve 1a Tapered surface 1b Male thread 1c Cutting 2 Removal sleeve 2a Tapered surface 2b Male thread 2c Cutting

Claims (1)

  In a manufacturing method of a sleeve member for a rolling bearing that is used for mounting a rolling bearing on a shaft and is cut in the axial direction, a flat steel plate is used as a material for the sleeve member, and the flat steel plate is bent into a cylindrical shape. A sleeve member for a rolling bearing, characterized in that the outer shape of the sleeve member is formed by turning in a state in which the portions that are butted in the circumferential direction are welded, and then the cut position is formed by cutting the welded position. Manufacturing method.

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