Method for measuring position of turning raceway of angular contact bearing ring

Abstract

The invention discloses a method for measuring the position of a turning raceway of an angular contact bearing ring, and the method comprises the following steps: (1) determining the groove curvature of a product to be machined, then preparing a steel ball with the groove curvature being 0.01-0.04 mm smaller than the groove curvature as a measuring ball, and then fixing the measuring ball to a measuring gauge tip; (2) preparing a standard gauge block of which the sum of the radius of the steel ball and the radius is close to a specified raceway position value, and setting a table according to a height difference; (3) during measurement, a product is flatly placed on a table plane of a measuring meter, external force is horizontally applied to the direction of a measuring ball of the meter, the measuring ball limits the product to continue to move forwards, the measuring ball is supported by utilizing the curvature of the raceway of the bearing ring, the radius point of the measuring ball in the horizontal direction is tangent to the raceway position point of the bearing ring, the raceway position of the angular contact bearing ring is obtained, and then multi-point measurement is carried out. And the groove swing value of the raceway is measured.

Description

Technical Field

[0001] This invention relates to the field of measurement technology for machining inner and outer rings of angular contact bearings, and more specifically to a method for measuring the raceway position during machining of angular contact bearing rings. Background Technology

[0002] When machining new angular contact bearing inner and outer rings, due to the variety of products and the different raceway curvatures of different products, the difference between the raceway interlocking dimensions and the raceway dimensions of most angular contact bearings is relatively small (e.g., Figure 1 When using a bearing raceway dimension and position measuring instrument (outer raceway D01X / inner raceway D02X, X ranges from 1 to 4) for measurement, it is necessary to customize a support point (smaller than the raceway curvature R) that matches the raceway curvature and a pressure point that can satisfy the fixing of the raceway lock side. Then, standard parts are made for comparison measurement to determine the raceway position of the inner and outer rings of the angular contact bearing (e.g., ...). Figure 2 ).

[0003] The original measurement method was limited by the workpiece curvature and raceway edge locking. To accurately measure the actual condition of the product, custom-made standard parts were required, and the measuring instrument needed to be customized with fulcrums and pressure points that matched the raceway curvature and locking shape (adding measuring points to the outer ring, and the same applies to others). Even if the fulcrums and pressure points were complete, the contact area between the fulcrums and pressure points and the raceway locking direction was too small, making it difficult for the product to be placed very stably on the bearing measuring instrument. This placed extremely high demands on the operator's measurement skills, often resulting in measurement errors and affecting product quality. Summary of the Invention

[0004] In view of this, the present invention provides a method for measuring the raceway position during machining of angular contact bearing rings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for measuring the raceway position during machining of angular contact bearing rings includes the following steps: (1) Determine the groove curvature of the product to be processed, then prepare a steel ball 0.01-0.04 mm smaller than the groove curvature as a measuring ball, and then fix the measuring ball to the tip of the measuring instrument; (2) Prepare a standard gauge block whose radius is close to the specified raceway position value when added to the steel ball radius, and check the table according to the height difference; the height difference is the difference between the standard gauge block plus the radius of the measuring ball and the groove position in the workpiece drawing; (3) When measuring, place the product flat on the table of the measuring instrument and apply an external force horizontally in the direction of the measuring ball of the instrument to restrict the product from moving forward. Use the curvature of the bearing raceway to lift the measuring ball. The radius point of the measuring ball in the horizontal direction is tangent to the raceway position point of the bearing raceway to obtain the raceway position of the angular contact bearing raceway. Then, measure the groove runout value of the raceway through multiple measurements.

[0006] Table value = (Standard gauge block + Measuring ball radius) - Process raceway position Actual raceway position = Process raceway position + Indicator needle reading during measurement The pendulum value = the maximum difference after multiple measurements; The table value represents the difference between the standard part and the actual groove position.

[0007] Preferably, the measuring instruments are G206 and G904 with dial gauges.

[0008] As can be seen from the above technical solution, compared with the prior art, the present invention has the following beneficial effects: By sampling several angular contact bearing raceway products and comparing the raceway position measurements after machining using the new measurement method with those obtained from the company's coordinate measuring machine and profilometer, the measurement error was within 0.01mm, fully meeting the needs of on-site machining measurements. This new measurement method is now being used for measuring the raceway position of new angular contact bearing raceways and products with small differences between the raceway and the raceway dimensions. The method is simple and efficient in on-site measurements, and operators only require minimal training to perform the measurements. This method can be widely adopted in the field of angular contact bearing raceway position measurement. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0010] Figure 1 This is a schematic diagram showing the rollover dimensions of the outer and inner rings of an angular contact bearing.

[0011] Figure 2 This is a schematic diagram illustrating the measurement method for the original raceway position of the inner ring. Figure 3 This is a schematic diagram of the measurement method of the present invention. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] This embodiment provides a method for measuring the raceway position during machining of angular contact bearing rings, including the following steps: (1) Determine the groove curvature of the product to be processed, then prepare a steel ball 0.02 mm smaller than the groove curvature as a measuring ball, and then fix the measuring ball to the tip of the measuring instrument; (2) Prepare a standard gauge block whose radius is close to the specified raceway position value when added to the steel ball radius, and check the table according to the height difference; the height difference is the difference between the standard gauge block plus the radius of the measuring ball and the groove position in the workpiece drawing; (3) When measuring, place the product flat on the table of the measuring instrument and apply an external force horizontally in the direction of the measuring ball of the instrument to restrict the product from moving forward. Use the curvature of the bearing raceway to lift the measuring ball. The radius point of the measuring ball in the horizontal direction is tangent to the raceway position point of the bearing raceway to obtain the raceway position of the angular contact bearing raceway. Then, measure the groove runout value of the raceway through multiple measurements.

[0014] In this embodiment, the raceway position of the inner and outer rings of the angular contact bearing is 20 mm, and the raceway curvature radius is R5.1 mm.

[0015] Select R5.08mm steel balls and 15mm standard height gauge blocks.

[0016] The counter value = (15 + 5.08) - 20 = 0.08, and the counter pointer index is 0.08.

[0017] Actual raceway position = 20 + gauge needle reading during measurement.

[0018] In this embodiment, the drawing requires the raceway position to be within ±0.04 and the groove swing to be 0.05. Through multi-point measurement, the dial indicator reading is within ±0.04, and the maximum and minimum measured values ​​are within 0.05mm, indicating that the measurement position and groove swing are qualified.

[0019] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0020] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of measuring the location of a machined raceway of a corner contact bearing ring, characterized by, It comprises the following steps: (1) Determine the groove curvature of the product to be processed, then prepare a steel ball with a radius of 0.01-0.04mm smaller than the groove curvature as a measuring ball, and then fix the measuring ball to the measuring table point; (2) Prepare a standard gauge block with a height difference close to the specified raceway position value added to the radius of the steel ball, and align the table; (3) During measurement, place the product on the measuring table plane, apply an external force to the direction of the measuring ball, so that the measuring ball is lifted by the curvature of the bearing ring raceway, the radius point of the measuring ball in the horizontal direction is tangent to the raceway position point of the bearing ring, the raceway position of the angular contact bearing ring is obtained, and the raceway swing value is measured through multi-point measurement.

2. The method of claim 1, wherein, The following formula is used for calculation: Alignment value=(standard gauge block+measuring ball radius)-process raceway position Actual raceway position=process raceway position+table pointer index during measurement Raceway swing value=maximum difference after multi-point measurement.

3. The method of claim 1, wherein, The measuring table is a G206 and G904 dial gauge.

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