Hub bearing matching simulation method based on linear fitting

A technology of wheel hub bearing and linear fitting, applied in the field of wheel hub bearing assembly, can solve the problems of unguaranteed bearing fitting rate, increased production cost and cycle, etc.

CN109378088AInactive Publication Date: 2019-02-22CHINA JILIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-02-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a hub bearing matching simulation method based on linear fitting. The method mainly comprises the following steps of (1) establishing a steel ball matching model to correct an error caused by the variation of a steel ball, (2) establishing a variation inner ring matching model to correct a deviation, checking whether an inner ring in an inventory can be matched and qualifiedor not, wherein the inner ring can correct the deviation if so, otherwise, entering to the steel ball matching model to correct after changing the inner ring, and (3) fitting an inner ring clearancedeviation function about a steel ball size obtained by simulation and a calculated steel Y function about the steel ball size on the same coordinate axis, wherein if there is a point on the two linesin the same group of inner rings, an established condition is satisfied, and the matching is successful. Through the above steps, the sizes of the steel ball and the inner ring can be clarified beforethe bearing assembly to achieve the purpose of qualified bearing matching, the secondary assembly of a bearing is reduced, and the matching ratio of the bearing is improved.
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Description

Technical field:

[0001] The invention belongs to the technical field of hub bearing assembly, and in particular relates to a matching simulation method for hub bearings based on linear fitting. Background technique:

[0002] As a key component that bears the weight of the vehicle and provides precise guidance for the rotation of the wheel hub, the hub bearing is essential to ensure the smooth, safe and reliable driving of the vehicle. Hub bearings are mainly composed of inner rings, outer rings, flanges and steel balls. Axial clearance is one of the important indicators of automotive hub bearings. In order to ensure the performance of hub bearings, it is necessary to control the axial clearance to meet the requirements during assembly. Tolerance requirements.

[0003] At present, most wheel hub bearing manufacturers adopt the trial assembly method. This method is simple in principle, but the fit rate of the bearings cannot be guaranteed. Repeated trial assembly is required,...

Examples

Embodiment Construction

[0032] The present invention will be further described below in conjunction with specific drawings.

[0033] The present invention simulates the part size of the hub bearing, proposes a linear fitting method to simulate the matching of the hub bearing, obtains the theoretical matching rate, and provides an effective reference for the actual matching of the bearing.

[0034] The hub bearing matching simulation method based on linear fitting includes three aspects: steel ball matching model, variable inner ring matching model and linear fitting of inner ring clearance deviation. Each step will be described in detail below.

[0035] Step 1: Establish a steel ball matching model, such as figure 1 shown.

[0036] First judge whether the clearance deviation meets the requirements. If it does not meet the requirements, the clearance deviation of the three parts can be obtained by linearly increasing or decreasing the size of the steel ball, and then the axial clearance deviation dat...