Device for rapidly measuring inner diameter of raceway of outer ring of double-row roller spherical bearing

Abstract

A device for rapidly measuring the inner diameter of an outer ring raceway of a double-row roller spherical bearing comprises a support, a lifting frame and a measuring mechanism, the support is provided with a lifting mechanism and a linear guide rail, the lifting frame is installed on the linear guide rail and connected with the lifting mechanism, and the measuring mechanism is arranged on the lifting frame. And the lifting mechanism drives the lifting frame and the measuring mechanism on the lifting frame to descend to the upper surface of the measured bearing along the linear guide rail to reach a measuring position, and the measuring mechanism starts positioning, tensioning and measuring work. The tensioning mechanism acts to tension the measured bearing, the movable measuring head mechanism acts to enable the movable measuring head to be in contact with the measured surface of the measured bearing, the inner diameter of the outer ring raceway of the measured bearing is measured, and the numerical value of the sensor is acquired, namely the inner diameter of the outer ring raceway of the measured bearing. According to the device, the measuring and positioning reference and the grinding reference are unified, and measurement is more real and accurate; the measurement principle adopts an oblique sphere center passing measurement mode, measurement data directly reflect the inner diameter characteristics of the bearing, and full-automatic measurement is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for detecting the raceway diameter of the outer ring of double-row roller spherical bearing (different from the measurement of the inner diameter of ordinary round hole), and belongs to the technical field of raceway measurement (spherical inner diameter detection) of the outer ring of spherical bearing. BACKGROUND

[0002] For the measurement of the inner diameter of the outer ring of double-row roller spherical bearing, the prior art usually detects by using an inner diameter micrometer, especially for medium and large bearings, which are heavy, and are not suitable for carrying during the measurement process, and the inner diameter micrometer is usually manually taken for measurement.

[0003] This way, since it is manual measurement, there is inevitably error, so that the detection data cannot truly reflect the raceway diameter. Moreover, the efficiency of measurement is low, and cannot meet the needs of mass production. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of quick measurement device of raceway inner diameter of the outer ring of double-row roller spherical bearing to efficiently and accurately measure raceway inner diameter of the outer ring of double-row roller spherical bearing in view of the deficiency existing in the prior art double-row roller spherical bearing outer ring inner diameter detection technology.

[0005] The quick measurement device of raceway inner diameter of the outer ring of double-row roller spherical bearing of the utility model adopts the following technical scheme:

[0006] The device includes a support, a lifting frame and a measuring mechanism, the support is provided with a lifting mechanism and a linear guide rail, the lifting frame is installed on the linear guide rail and connected with the lifting mechanism, and the measuring mechanism is arranged on the lifting frame.

[0007] The lifting mechanism adopts a screw-nut pair moving mechanism, including a servo motor, a screw and a nut, the screw is vertically installed on the support, the servo motor is installed on the upper part of the support and connected with the screw, the nut is installed on the lifting frame, and the screw is connected with the nut through thread. The servo motor drives the screw to rotate, moves the nut, and the lifting frame moves along the linear guide rail following the nut.

[0008] The lifting mechanism can also use electric push rod, hydraulic cylinder, etc.

[0009] The measuring mechanism includes a measuring base plate, a fixed probe, a tensioning mechanism and a moving probe mechanism, the fixed probe, the tensioning mechanism and the moving probe mechanism are all arranged on the measuring base plate, the fixed probe is below the measuring base plate, and the measuring base plate is connected to the lifting frame.

[0010] The tensioning mechanism comprises a linear guide rail, a tensioning cylinder and a tensioning frame, the linear guide rail and the tensioning cylinder are arranged on a measuring base plate, the tensioning frame is arranged on the linear guide rail and connected with a piston rod of the tensioning cylinder, a tensioning steel ball is arranged on the tensioning frame, and a long slot hole is arranged on the measuring base plate to make the tensioning steel ball extend below the measuring base plate.

[0011] The mobile measuring head mechanism comprises a moving and retreating cylinder, a linear guide rail and a moving and retreating frame, the moving and retreating cylinder and the linear guide rail are arranged on a measuring base plate, the moving and retreating frame is arranged on the linear guide rail and connected with a piston rod of the moving and retreating cylinder, a sensor and a mobile measuring head are arranged on the moving and retreating frame, the mobile measuring head is electrically connected with the sensor, and a long slot hole is arranged on the measuring base plate to make the mobile measuring head extend below the measuring base plate.

[0012] The lifting mechanism drives the lifting frame and the measuring mechanism thereon to descend along the linear guide rail to the upper surface of the measured bearing (double-row roller spherical bearing), reaches the measuring position, and starts the positioning, tensioning and measuring work.

[0013] The utility model has the following characteristics:

[0014] 1. The measurement positioning reference is unified with the grinding reference, and the measurement is more real and accurate.

[0015] 2. The measurement principle adopts the oblique passing ball center measurement mode, and the measurement data directly reflects the bearing inner diameter characteristics.

[0016] 3. Full-automatic measurement, the measurement beat is 30s, and the needs of mass production are met. DRAWINGS

[0017] Figure 1 It is a structure front view of the utility model double-row roller spherical bearing outer ring raceway inner diameter fast measurement device.

[0018] Figure 2 It is a upper structure perspective view of the utility model double-row roller spherical bearing outer ring raceway inner diameter fast measurement device.

[0019] Figure 3 It is a lower structure perspective view of the utility model double-row roller spherical bearing outer ring raceway inner diameter fast measurement device.

[0020] Figure 4Is the structure diagram of the tensioning mechanism of the measuring mechanism in the utility model.

[0021] Figure 5 Is the structure diagram of the moving measuring head of the measuring mechanism in the utility model.

[0022] Figure 6 Is the measurement principle diagram of the quick measuring device of the double-row roller spherical bearing outer ring raceway inner diameter of the utility model;Among them (a) is the front view of the measured bearing, (b) is the top view of the measured bearing.

[0023] Among them: 1. Servo motor, 2. Support, 3. Lifting frame, 4. Linear guide, 5. Measuring mechanism, 6. Measured bearing, 7. Measuring base plate, 8. Fixed measuring head, 9. Moving measuring head mechanism, 10. Tensioning mechanism, 11. Connecting column, 12. Tensioning steel ball, 13. Linear guide, 14. Tensioning cylinder, 15. Tensioning frame, 16. Linear guide, 17. Sensor, 18. Moving measuring head, 19. In and out cylinder, 20. In and out frame. DETAILED DESCRIPTION

[0024] As Figure 1 , Figure 2 and Figure 3 , the quick measuring device of the double-row roller spherical bearing outer ring raceway inner diameter of the utility model, including support 2, lifting mechanism, lifting frame 3, linear guide 4 and measuring mechanism 5.Lifting mechanism is arranged on the support 2, the linear guide 4 is vertically arranged on the support 2, the lifting frame 3 is installed on the linear guide 4 and is connected with the lifting mechanism, and the measuring mechanism 5 is arranged on the lifting frame 3.Lifting mechanism drives lifting frame 3 and the measuring mechanism 5 on it to lift along the linear guide 4, reaches the measuring position, and the measuring mechanism 5 quickly measures the outer ring raceway inner diameter of the measured bearing 6 (double-row roller spherical bearing).

[0025] Lifting mechanism adopts screw-nut moving mechanism, including servo motor 1, screw and nut, screw is vertically installed on support 2 through bearing, servo motor 1 is installed on the upper portion of support 2 and is connected with screw, nut is installed on lifting frame 3, and screw is connected with nut through thread.Servo motor 1 drives screw rotation, screw moves through thread transmission, and lifting frame 3 moves along linear guide 4 following nut.Lifting mechanism can also adopt electric push rod, hydraulic cylinder and the like.

[0026] Referring to Figure 2 and Figure 3 , the measuring mechanism 5 includes measuring base plate 7, fixed measuring head 8, tensioning mechanism 10 and moving measuring head mechanism 9.Fixed measuring head 8, tensioning mechanism 10 and moving measuring head mechanism 9 are all arranged on the measuring base plate 7, fixed measuring head 8 is below the measuring base plate 7, and the measuring base plate 7 is connected to the lifting frame 3 through the connecting column 11. Figure 4The structure of the tensioning mechanism 10 is given, including the linear guide rail 13, the tensioning cylinder 14 and the tensioning frame 15, the linear guide rail 13 and the tensioning cylinder 14 are arranged on the measuring base plate 7, the tensioning frame 15 is arranged on the linear guide rail 13 and connected with the piston rod of the tensioning cylinder 14, the tensioning frame 15 is provided with the tensioning steel ball 12, and the measuring base plate 7 is provided with a long slot hole for allowing the tensioning steel ball 12 to extend below the measuring base plate 7; the tensioning cylinder 14 drives the tensioning frame 15 to move on the linear guide rail 13, so that the tensioning steel ball 12 on the tensioning frame 15 contacts the measured bearing 6, and the tensioning of the measured bearing 6 is realized. Figure 5 The structure of the mobile measuring head mechanism 9 is given, including the advance and retreat cylinder 19, the linear guide rail 16 and the advance and retreat frame 20, the advance and retreat cylinder 19 and the linear guide rail 16 are arranged on the measuring base plate 7, the advance and retreat frame 20 is arranged on the linear guide rail 16 and connected with the piston rod of the advance and retreat cylinder 19, the advance and retreat frame 20 is provided with the sensor 17 and the mobile measuring head 18, the mobile measuring head 18 is electrically connected with the sensor 17, and the measuring base plate 7 is provided with a long slot hole for allowing the mobile measuring head 18 to extend below the measuring base plate 7; the advance and retreat cylinder 19 drives the advance and retreat frame 20 to move along the linear guide rail 16, so that the mobile measuring head 18 moves to contact the measured bearing 6, and the measuring data is read by the sensor 17.

[0027] Figure 6 The process of the above device for detecting the inner diameter of the outer ring of the measured bearing 6 is given, the lifting mechanism drives the lifting frame 3 to descend to the upper surface of the measured bearing 6, and the measuring mechanism 5 starts the positioning, tensioning and measuring work. The tensioning mechanism 10 acts to tension the measured bearing 6, and the mobile measuring head 9 acts to make the sensor head contact the measured surface of the bearing 6, at which time the value of the head sensor is collected. The specific process is as follows.

[0028] 1. Positioning and pressing

[0029] After the measured bearing 6 is pushed to the detection position, the servo motor 1 is driven to drive the lifting mechanism to lower the lifting frame 3 and the measuring mechanism 5 thereon, so that the measuring base plate 7 in the measuring mechanism 5 just contacts the upper end surface of the measured bearing 6 (the upper end surface is the reference surface of bearing grinding), and the measuring mechanism 5 on the upper part of the measuring base plate 7 is in a floating state. The tensioning mechanism 10 acts to tension the measured bearing 6 through the tensioning steel ball 12, and since the tensioning surface is a spherical surface (the tensioning steel ball 12), the measuring base plate 7 is tightly attached to the upper end surface of the measured bearing 6 after tensioning, and the positioning and pressing of the measured bearing 6 and the measuring mechanism 5 are completed.

[0030] 2. Detection of the inner diameter of the outer ring of the double-row spherical bearing

[0031] Referring to Figure 6After the positioning and pressing of the measured bearing 6 and the measuring mechanism 5, the advance and retreat cylinder 19 drives the advance and retreat frame 20 and the moving probe 18 (moving measuring point) to tightly adhere to the spherical surface (the outer ring raceway of the measured bearing 6), and the line connecting the moving probe 18 (moving measuring point) and the fixed probe 8 (fixed measuring point) passes through the center of the measured bearing 6 (see Fig. 2). Figure 6 (b)), at which time the value of the sensor 17 is read, which is the measured value dKc of the inner diameter of the spherical surface of the measured bearing 6.

[0032] The inner diameter size dK of the outer ring raceway of the measured bearing 6 is calculated according to the following formula:

[0033] dK = dKo + cos (a) * (dKc - dKco),

[0034] wherein dKc is the measured value of the inner diameter of the spherical surface of the measured bearing 6, dKco is the measured value of the inner diameter of the spherical surface of the standard part, dKo is the inner diameter size of the spherical surface of the standard part, and a is the contact angle of the measured bearing 6.

Claims

1. A device for quickly measuring the inner diameter of the raceway of a double-row spherical roller bearing outer ring, characterized in that, The application relates to a measuring device, which comprises a support, a lifting frame and a measuring mechanism, the support is provided with a lifting mechanism and a linear guide rail, the lifting frame is installed on the linear guide rail and connected with the lifting mechanism, and the measuring mechanism is arranged on the lifting frame; the measuring mechanism comprises a measuring base plate, a fixed measuring head, a tensioning mechanism and a movable measuring head mechanism, the fixed measuring head, the tensioning mechanism and the movable measuring head mechanism are arranged on the measuring base plate, and the measuring base plate is connected with the lifting frame.

2. The device for quick measurement of the inner diameter of the raceway of the outer ring of a double-row spherical roller bearing according to claim 1, characterised in that The lifting mechanism adopts a screw nut pair moving mechanism, comprises a servo motor, a screw rod and a nut, the screw rod is vertically installed on the support, the servo motor is installed on the upper portion of the support and connected with the screw rod, the nut is installed on the lifting frame, and the screw rod is connected with the nut through threads.

3. The device for quick measurement of the inner diameter of the raceway of the outer ring of a double-row spherical roller bearing according to claim 1, characterised in that The lifting mechanism adopts an electric push rod and a hydraulic cylinder.

4. The device for quick measurement of the inner diameter of the raceway of the outer ring of a double-row roller spherical bearing according to claim 1, characterized in that, The tensioning mechanism comprises a linear guide rail, a tensioning cylinder and a tensioning frame, the linear guide rail and the tensioning cylinder are arranged on the measuring base plate, the tensioning frame is arranged on the linear guide rail and connected with the piston rod of the tensioning cylinder, and the tensioning frame is provided with a tensioning steel ball.

5. The device for rapid measurement of the inner diameter of the raceway of the outer ring of a double-row spherical roller bearing according to claim 4, characterised in that The measuring base plate is provided with a long slot hole, so that the tensioning steel ball can extend into the lower portion of the measuring base plate.

6. The device for rapid measurement of the inner diameter of the raceway of the outer ring of a double-row spherical roller bearing according to claim 1, characterised in that, The movable measuring head mechanism comprises a back-and-forth cylinder, a linear guide rail and a back-and-forth frame, the back-and-forth cylinder and the linear guide rail are arranged on the measuring base plate, the back-and-forth frame is arranged on the linear guide rail and connected with the piston rod of the back-and-forth cylinder, the back-and-forth frame is provided with a sensor and a movable measuring head, and the movable measuring head is electrically connected with the sensor.

7. The device for rapid measurement of the inner diameter of the raceway of the outer ring of a double-row spherical roller bearing according to claim 6, characterised in that The measuring base plate is provided with a long slot hole, so that the movable measuring head can extend into the lower portion of the measuring base plate.

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