CN205228353U - Outer lane roundness detection device in bearing - Google Patents

Abstract

The utility model relates to a roundness detection device for the inner and outer rings of a bearing, which comprises a frame, a measuring platform, a measuring mechanism and a centering mechanism. Table seat and adjustment mechanism, the upper surface of the measuring table is provided with at least two linear slides parallel to the dial indicator rod; the centering mechanism includes a radial positioning support plate and at least two locking parts A slide block is correspondingly protruded toward the bottom of the positioning support plate, the radial positioning support plate is positioned on the measuring platform through a locking member, and a support groove is also opened on the radial positioning support plate. In the utility model, the linear chute opened on the measuring table is set parallel to the touch rod of the dial indicator respectively, and the radial positioning support plate is correspondingly positioned in the linear chute through the slider, so that when the radial positioning support plate moves up and down to adjust No inclination occurs, no re-horizontal positioning of the tested ferrule is required, the measurement accuracy is high and the operation is convenient.

Description

A device for detecting roundness of inner and outer rings of bearings

technical field

The utility model relates to the field of bearing testing equipment, in particular to a roundness testing device for inner and outer rings of a bearing.

Background technique

As we all know, the roundness of the inner and outer rings is one of the important structural parameters of the bearing. If the roundness of the bearing ring is not up to standard, it will directly affect the rotation accuracy, vibration and noise of the bearing, and will also affect the clearance, stiffness, Friction torque, and even the fatigue life and working reliability of bearings, etc. Therefore, it is very important for the measurement and control of the inner diameter, outer diameter, and raceway roundness of bearing rings, especially for military, railway, precision, and automotive bearings. For bearings with technological content, the measurement of roundness index is more important.

Recently, the traditional method of measuring the roundness of bearing rings is mainly manual measurement with the help of roundness measuring instruments, and the method of rotating the measuring instrument without moving the measuring piece is adopted. The ferrule needs to be manually placed on the measuring instrument, and the same direction Rotate the ferrule and read the value through the dial gauge or multimeter. Therefore, the stability of the ferrule placement platform and the position setting with the dial gauge or multimeter have particularly strict requirements, which directly affect the accuracy of roundness measurement .

As shown in Figure 1, the existing roundness measuring instrument includes a measuring platform 1ˊ, a dial indicator 2ˊ and a support plate 3ˊ, the measuring platform 1ˊ is triangular in shape, and there are two parallel to the two waist sides of the measuring platform 1ˊ. The chute 11ˊ, the support plate 3ˊ is positioned on the measuring platform 1ˊ through the locking piece. During the measurement, the dial indicator 2ˊ is fixed above the measuring platform 1ˊ, and the height of the supporting plate 3ˊ is adjusted according to the outer diameter of the tested ferrule, which can be used for Wide range of applications for measuring ferrules with different outer diameters. When measuring, the measured ferrule is placed on the support plate for measurement, and it is necessary to ensure that the extension line of the dial indicator and the diameter of the measured ferrule are on the same straight line to ensure the accuracy of the roundness measurement. However, in actual use During the process, since the two chutes are relatively inclined, the support plate is fixed only by the locking piece that fits the chute on one side, and the other side can slide along the chute. When the support plate is adjusted up and down, the left and right sides are easy to adjust. Sliding, tilting, difficult operation, low work efficiency, and relying on workers to adjust it to a horizontal state through visual inspection, the error is large and the measurement accuracy is low.

Utility model content

The purpose of this utility model is to provide a roundness detection device for the inner and outer rings of the bearing in view of the deficiencies of the prior art. The linear slide grooves set up on the measuring platform are respectively arranged in parallel with the touch rods of the dial indicator, and the radial positioning support plate The slider is correspondingly positioned in the linear chute, so that the radial positioning support plate will not tilt when it moves up and down, and there is no need to re-horizontally position the tested ferrule. The measurement accuracy is high and the operation is convenient.

The technical solutions of the present utility model are as follows:

A device for detecting the roundness of the inner and outer rings of a bearing, comprising a frame, a measuring platform, a measuring mechanism and a centering mechanism, the measuring platform is fixedly installed on the frame, and the measuring mechanism is installed above the measuring platform, characterized in that the measuring mechanism includes The dial indicator seat and the adjustment mechanism of the dial indicator are installed, and the adjustment mechanism is fixedly arranged on the top of the measuring table, which is connected with the dial indicator seat; the upper surface of the measuring table is provided with at least two The linear chute is arranged parallel to the feeler rod of the watch; the centering mechanism includes a radial positioning support plate and at least two locking pieces, and the bottom of the radial positioning support plate is provided with a corresponding protrusion matching the linear chute. The radial positioning support plate is positioned on the measuring platform through the locking piece, and the radial positioning support plate is also provided with a support groove for placing the ferrule under test.

As an improvement, the locking member passes through the corresponding slide block and its end is placed in the linear slide groove.

As an improvement, the end of the feeler rod of the dial indicator is located on the same straight line as the diameter of the tested ferrule and the middle of the support groove, so as to provide a reference for measuring the roundness of the tested ferrule and ensure measurement accuracy.

The shape of the measuring platform of the present invention is square, and the linear chute is vertically arranged at both ends of the measuring platform, and the radial positioning support plate is positioned on the measuring platform through the slider protruding from its bottom, so as to realize the radial positioning of the supporting plate in the horizontal direction. The limit position avoids the situation that the radial positioning support plate is tilted when it is adjusted up and down according to different measured ferrules and affects the measurement accuracy, which simplifies the operation and improves the work efficiency.

As an improvement, the adjustment mechanism includes a column vertically arranged on the measuring table and a rotating part rotatably mounted on the column, and the end of the rotating part is fixedly connected to the side of the dial indicator base.

As an improvement, the rotating part is arranged parallel to the measuring platform.

As an improvement, the upright column is fixedly connected with the measuring platform by screw connection, riveting or welding.

As an improvement, several grooves are evenly opened on the upper surface of the measuring platform to increase the coefficient of friction of the ferrule under test placed on the measuring platform and ensure the safety and accuracy of the measurement.

As an improvement, the horizontal inclination angle of the measuring platform is 20°-50°, which is designed according to the force support of the tested workpiece, and at the same time increases the stability of the tested ferrule and improves the measurement accuracy.

As an improvement, the thickness of the radial positioning support plate is not less than 20 mm to 30 mm, so that it can meet the requirements of supporting the tested ferrule and ensure stability and firmness during measurement.

As an improvement, the support groove is in an inverted V shape or an inverted trapezoid, and its opening extends to the upper end surface of the radially positioned support plate.

The beneficial effects of the utility model are:

The utility model is provided with a linear chute parallel to the touch rod of the dial indicator on the measuring platform, and the radial positioning support plate is positioned in the linear chute through the slider protruding from the bottom of the radial positioning support plate, so as to realize the radial Locate the limit position in the horizontal direction of the support plate so that it will not tilt in the horizontal direction when it moves up and down according to the measured ferrule, so as to ensure that the extension line of the touch rod of the dial gauge always passes through the diameter of the measured ferrule, which is roundness The measurement provides a benchmark, and the operator only needs to position the radial positioning support plate in the vertical direction. The measurement accuracy is high, the operation is convenient, and the up and down adjustment is convenient and stable. It is suitable for small, medium and small bearings with an outer diameter range below φ250mm The detection of the ferrule reduces the labor intensity of workers and greatly improves the measurement efficiency.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of roundness measuring instrument in the prior art;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is a structural schematic diagram of the radial positioning support plate in the utility model.

detailed description

The technical solutions in the embodiments of the utility model are clearly and completely described below in conjunction with the accompanying drawings.

Embodiment one

As shown in Figure 2, the utility model provides a roundness detection device for bearing inner and outer rings, including a frame 1, a measuring platform 2, a measuring mechanism 3 and an alignment mechanism 4, and the measuring platform 2 is fixedly installed on the frame 1 , the measuring mechanism 3 is installed on the top of the measuring platform 2, the measuring mechanism 3 includes a dial indicator seat 32 and an adjusting mechanism 33 with a dial gauge 31 installed, and the adjusting mechanism 33 is fixedly installed on the top of the measuring platform 2, and it is connected with the dial indicator The table base 32 is connected; the upper surface of the measuring table 2 is provided with at least two linear slides 21 arranged parallel to the feel rod of the dial gauge 31; the centering mechanism 4 includes a radial positioning support plate 41 and at least Two locking pieces 42, as shown in Figure 3, the bottom of the radial positioning support plate 41 is correspondingly protruded with a slider 411 matching the linear chute 21, and each slider 411 is embedded in the corresponding In the linear chute 21, each slider 411 is provided with a locking piece 42, and the end of the locking piece 42 is placed in the linear chute 21, so that the radial positioning support plate 41 is positioned on the measuring platform 2 . The radial positioning support plate 41 is also provided with a support groove 412 for placing the ferrule under test. The support groove 412 is an inverted V shape or an inverted trapezoid, and its opening extends to the upper end surface of the radial positioning support plate 41. At the same time , in order to meet the requirement of supporting the tested ferrule and ensure stability and safety during measurement, the thickness of the radial positioning support plate 41 in this embodiment is not less than 20 mm to 30 mm.

The shape of the measuring table 2 in this embodiment is a square shape. In order to support the workpiece to be tested, it is convenient to place the ferrule under test on the radial positioning support plate 41, so that the ferrule under test is placed close to the measuring table 2, increasing the Its placement is stable, and the horizontal inclination angle of the measuring platform 2 is designed to be 20° to 50°, which is also convenient for workers to turn it, saving time and effort and having good safety. In addition, the linear chute 21 set on the measuring platform 2 is set vertically to both ends of the measuring platform 2, and at the same time, the radial positioning support plate 41 is positioned on the measuring platform 2 through the slider 411 protruding from its bottom to realize radial positioning. The limit position in the horizontal direction of the support plate 41 avoids the situation that the radial positioning support plate 41 is tilted when it is adjusted up and down according to different ferrules to be tested, which affects the measurement accuracy, simplifies the operation, and improves the work efficiency. Moreover, the end of the feeler rod of the dial indicator 31 is located on the same straight line as the diameter of the tested ferrule and the middle part of the support groove 412, which provides a reference for measuring the roundness of the tested ferrule and ensures measurement accuracy.

The adjustment mechanism 33 includes a column 331 vertically arranged on the measuring platform 2 and a rotating part 332 rotatably mounted on the column 331. The end of the rotating part 332 is fixedly connected to the side of the dial indicator seat 32, and the rotating part 332 Set in parallel with the measuring table 2, before measuring the roundness of the ferrule under test, the angle of the dial indicator 31 can be fine-tuned through the adjustment mechanism 33, so that it is on the same line as the diameter of the ferrule under test, which is convenient for adjustment Measuring datum, improving measuring accuracy, simple structure, convenient operation. Wherein, the upright column 331 is fixedly connected with the measuring platform 2 , and the connection method can be threaded connection, riveting or welding under the premise of ensuring the stability of the upright column 331 .

Wherein, in order to increase the coefficient of friction of the ferrule under test placed on the measuring platform 2 and ensure the safety and accuracy of the measurement, the upper surface of the measuring platform 2 is evenly provided with several grooves 22 .

working principle:

Adjust the dial gauge 31 through the adjustment mechanism 33 so that the extended line of the feeler rod passes through the centerline position of the support groove 412 provided on the radial positioning support plate 41, measure the outer diameter of the ferrule under test and record the value, and release it after calculation For all the locking parts 42, move the radial positioning support plate 41 up and down to a suitable position, so that the end of the feeler rod of the dial gauge 31 just contacts the end of the ferrule under test, and a value, record the value, the operator rotates the tested ferrule in the same direction, and record the changed value of the dial indicator 31, the absolute value of the difference between the maximum value and the minimum value is the roundness error of the tested ferrule , after the tested ferrule is tested, remove it and replace it with the next one. The operator only needs to adjust the radial positioning support plate 41 up and down according to the outer diameter of the tested ferrule. The operation is convenient, time-saving and labor-saving, and the measurement efficiency is high. high.

The above is only a preferred specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of it within the technical scope disclosed in the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A roundness detection device for inner and outer rings of a bearing, comprising a frame (1), a measuring platform (2), a measuring mechanism (3) and an alignment mechanism (4), and the measuring platform (2) is fixedly installed on the frame (1 ), the measuring mechanism (3) is installed above the measuring platform (2), and it is characterized in that: the measuring mechanism (3) includes a dial indicator seat (32) and an adjusting mechanism (33) equipped with a dial indicator (31) ), the adjustment mechanism (33) is fixedly arranged on the top of the measuring platform (2), and it is connected with the dial indicator seat (32); the upper surface of the measuring platform (2) is provided with at least two The linear chute (21) that the contact rod of (31) is arranged in parallel; the centering mechanism (4) includes a radial positioning support plate (41) and at least two locking pieces (42), and the radial positioning support plate The bottom corresponding projection of (41) is provided with the slide block (411) that matches with described linear chute (21), and the radial positioning support plate (41) is positioned on the measuring table (2) by locking piece (42) A support groove (412) for placing the tested ferrule is also provided on the radial positioning support plate (41). 2. A device for detecting roundness of bearing inner and outer rings according to claim 1, characterized in that, the locking member (42) passes through the corresponding slider (411) and its end is placed in the linear chute ( 21) inside. 3. A device for detecting roundness of bearing inner and outer rings according to claim 1, characterized in that, the end of the feeler rod of the dial indicator (31), the diameter of the tested ferrule and the middle of the support groove (412) are located on the same line. 4. A roundness detection device for bearing inner and outer rings according to claim 1, characterized in that the adjustment mechanism (33) includes a column (331) vertically arranged on the measuring table (2) and a column (331) rotatably mounted on the measuring platform (2). The rotating part (332) on the column (331), the end of the rotating part (332) is fixedly connected with the side of the dial indicator seat (32). 5 . The roundness detection device of bearing inner and outer rings according to claim 4 , characterized in that, the rotating part ( 332 ) is arranged parallel to the measuring platform ( 2 ). 6 . The roundness detection device of bearing inner and outer rings according to claim 4 , characterized in that, the column ( 331 ) is fixedly connected to the measuring table ( 2 ) by screw connection, riveting or welding. 7 . 7. The roundness detection device of bearing inner and outer rings according to claim 1, characterized in that, the upper surface of the measuring table (2) is evenly provided with several grooves (22). 8 . The roundness detection device of bearing inner and outer rings according to claim 1 , characterized in that, the horizontal inclination angle of the measuring table ( 2 ) is 20°-50°. 9. The roundness detection device of bearing inner and outer rings according to claim 1, characterized in that the thickness of the radial positioning support plate (41) is not less than 20 mm to 30 mm. 10. A roundness detection device for bearing inner and outer rings according to claim 1, characterized in that, the support groove (412) is an inverted V shape or an inverted trapezoid, and its opening extends to the radial positioning support plate (41) of the upper end.