Positioning tool for induction hardening of automobile hub bearing

Abstract

The utility model discloses a positioning tool for induction quenching of an automobile hub bearing, which relates to the technical field of induction quenching equipment and comprises an annular body, a central hole of the annular body is a positioning hole for inserting an outer ring of a workpiece, and the aperture of the positioning hole is slightly larger than the diameter of the outer ring of the workpiece; a plurality of threaded holes in the radial direction are formed in the outer circle face of the annular body, and the threaded holes communicate with the positioning holes correspondingly. A positioning bead used for abutting against the outer ring of the workpiece is arranged at the opening, opposite to the positioning hole, of the threaded hole, and a jackscrew mechanism is arranged in the threaded hole and used for adjusting the pressure of the positioning bead. According to the utility model, the jackscrew mechanism is matched with the steel balls to realize point contact between the positioning tool and the workpiece, so that the quenching quality is improved, the tool cost is reduced, and the quenching deformation of the workpiece is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of induction hardening equipment, in particular to a positioning tool used for induction hardening of automobile wheel hub bearings. Background Art

[0002] The traditional positioning tooling used for induction quenching of automobile wheel hub bearings usually places a pressure plate on the workpiece to position it. This positioning method is not only cumbersome to operate, but also generates noise due to the surface contact between the pressure plate and the workpiece, and affects the quenching quality. Utility Model Content

[0003] In view of the defects existing in the prior art, the purpose of the utility model is to provide a positioning tool for induction quenching of automobile wheel hub bearings, which realizes point contact between the positioning tool and the workpiece by using a top screw mechanism and a steel ball, thereby improving the quenching quality, reducing the tooling cost, and reducing the quenching deformation of the workpiece.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a positioning tool for induction quenching of automobile wheel hub bearings, including an annular body, the center hole of the annular body is a positioning hole for inserting the outer ring of the workpiece, and the aperture of the positioning hole is slightly larger than the diameter of the outer ring of the workpiece; the outer cylindrical surface of the annular body is provided with a plurality of radial threaded holes, and each threaded hole is connected with the positioning hole respectively; the opening of the threaded hole relative to the positioning hole is provided with a positioning bead for supporting the outer ring of the workpiece, and a top screw mechanism is provided in the threaded hole, and the top screw mechanism is used to adjust the pressure of the positioning bead.

[0005] A further improvement is that a spring is provided between the positioning hole and the jackscrew mechanism.

[0006] A further improvement is that the jack screw mechanism comprises a columnar body, the front end of the columnar body is provided with a conical portion adapted to the spring, and the rear end of the columnar body is provided with an external thread adapted to the threaded hole.

[0007] A further improvement is that a limiting step is provided at the opening of the threaded hole opposite to the positioning hole to prevent the positioning bead from falling out.

[0008] A further improvement is that six threaded holes are arranged and evenly distributed on the outer circumferential surface of the annular body.

[0009] A further improvement is that the positioning beads are steel balls.

[0010] A further improvement is that the distance that the positioning bead protrudes from the threaded hole is no more than 0.2 mm.

[0011] The beneficial effects of the utility model are:

[0012] 1. The utility model utilizes the top screw mechanism and the positioning bead to achieve point contact between the positioning tool and the workpiece, thereby improving the quenching quality, reducing the tooling cost, and reducing the quenching deformation of the workpiece.

[0013] 2. In the utility model, a spring is arranged between the positioning hole and the top screw mechanism, so as to realize the floating positioning of the positioning bead, greatly reduce the bearing noise and increase the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a positioning tool for induction quenching of automobile wheel hub bearings in an embodiment of the utility model;

[0015] Figure 2 This is an enlarged schematic diagram of the top screw mechanism in the embodiment of the utility model;

[0016] Figure 3 This is a working state diagram of a positioning tool for induction quenching of automobile wheel hub bearings in an embodiment of the utility model;

[0017] Figure 4 for Figure 3 Side view of.

[0018] Reference numerals:

[0019] 1- annular body; 11- positioning hole; 12- threaded hole; 13- limiting step; 2- positioning bead; 3- top screw mechanism; 31- columnar body; 32- conical part; 33- external thread; 4- spring. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0021] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0022] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, but cannot be understood as limiting the utility model.

[0023] See also Figure 1-2 As shown, the embodiment of the utility model provides a positioning tool for induction quenching of automobile wheel hub bearings, including an annular body 1, the center hole of the annular body 1 is a positioning hole 11 for inserting the outer ring of the workpiece, and the aperture of the positioning hole 11 is slightly larger than the diameter of the outer ring of the workpiece; the outer cylindrical surface of the annular body 1 is provided with a plurality of radial threaded holes 12, and each threaded hole 12 is connected with the positioning hole 11 respectively; the opening of the threaded hole 12 opposite to the positioning hole 11 is provided with a positioning bead 2 for supporting the outer ring of the workpiece, and a top screw mechanism 3 is provided in the threaded hole 12, and the top screw mechanism 3 is used to adjust the pressure of the positioning bead 2. Specifically, a spring 4 is provided between the positioning hole 11 and the top screw mechanism 3 to realize the floating positioning of the positioning bead. A limiting step 13 is provided at the opening of the threaded hole 12 opposite to the positioning hole 11 to prevent the positioning bead 2 from falling out.

[0024] See also Figure 2 As shown, the jack screw mechanism 3 includes a columnar body 31 , a conical portion 32 adapted to the spring 4 is provided at the front end of the columnar body 31 , and an external thread 33 adapted to the threaded hole 12 is provided at the rear end of the columnar body 31 .

[0025] In this embodiment, six threaded holes 12 are provided, evenly distributed on the outer circumferential surface of the annular body 1. The positioning ball 2 is a steel ball, and the distance of the positioning ball 2 exposed from the threaded hole 12 is no more than 0.2 mm.

[0026] The working principle of the utility model is:

[0027] See also Figure 3 and Figure 4 As shown, first put the workpiece into the fixture, then put the positioning column into the six threaded holes, put in six suitable springs, and use six screw mechanisms to compress the springs. The pressure makes the workpiece fixing force appropriate, and confirm that the installation and extraction of the workpiece meet the requirements, and the workpiece will not move upward during heating. The workpiece quenched by this fixture has small deformation, which can meet the performance requirements of the bearing to the maximum extent, greatly reduce the bearing noise, and increase the service life of the bearing. At the same time, the gland is eliminated, which improves production efficiency and reduces the cost of the fixture.

[0028] In the description of the specification, the description with reference to the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model, and the schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0029] Through the description of the above structure and principle, technicians in the relevant technical field should understand that the present invention is not limited to the above-mentioned specific implementation methods. Improvements and substitutions based on the present invention using the known technology in the field all fall within the protection scope of the present invention and should be defined by the claims.

Claims

1. A positioning fixture for induction hardening of automobile wheel hub bearings, comprising an annular body (1), characterized in that: The central hole of the annular body (1) is a positioning hole (11) for inserting the outer ring of the workpiece, and the aperture of the positioning hole (11) is slightly larger than the diameter of the outer ring of the workpiece; the outer circumferential surface of the annular body (1) is provided with a plurality of threaded holes (12) along the radial direction, and each threaded hole (12) is respectively connected to the positioning hole (11); a positioning bead (2) for supporting the outer ring of the workpiece is provided at the opening of the threaded hole (12) opposite to the positioning hole (11), and a top screw mechanism (3) is provided in the threaded hole (12), and the top screw mechanism (3) is used to adjust the pressure of the positioning bead (2); A spring (4) is provided between the positioning hole (11) and the jacking screw mechanism (3); The jack screw mechanism (3) comprises a columnar body (31), the front end of the columnar body (31) is provided with a conical portion (32) adapted to the spring (4), and the rear end of the columnar body (31) is provided with an external thread (33) adapted to the threaded hole (12).

2. The positioning fixture for induction hardening of automobile wheel hub bearings according to claim 1, characterized in that: A limiting step (13) is provided at the opening of the threaded hole (12) opposite to the positioning hole (11) to prevent the positioning bead (2) from falling out.

3. The positioning fixture for induction hardening of automobile wheel hub bearings according to claim 1, characterized in that: There are six threaded holes (12) evenly distributed on the outer circumferential surface of the annular body (1).

4. The positioning fixture for induction hardening of automobile wheel hub bearings according to claim 1, characterized in that: The positioning beads (2) are steel balls.

5. The positioning fixture for induction hardening of automobile wheel hub bearings according to claim 1, characterized in that: The distance that the positioning bead (2) is exposed from the threaded hole (12) is no more than 0.2 mm.

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