Bearing Steel Ball Axial Clearance Detection Device

Abstract

The present invention discloses a device for detecting the movement of a bearing steel ball, comprising a base, a workbench fixed to the base, a clamping assembly disposed on the base, an adjustment assembly, and a measuring assembly fixed to the adjustment assembly. The measuring assembly comprises a fixed sleeve, a differential cylinder sleeved on the outer diameter surface of the fixed sleeve, a screw provided in the differential cylinder, the screw being threadedly connected to the inner wall surface of the fixed sleeve, scale lines being provided on the outer diameter surfaces of the fixed sleeve and the differential cylinder, a deep groove being provided on one end of the screw facing the workbench, and a sensing assembly being provided in the deep groove. The device ensures that the measuring assembly is horizontal relative to the base, preventing the occurrence of inaccurate measurements due to a tilted probe. The measuring assembly can more accurately measure the movement of the steel ball, and the provision of a drive assembly can measure the movement of the steel ball in dynamic conditions.

Description

Technical Field

[0001] The invention relates to a device for detecting the movement amount of a bearing steel ball. Background Art

[0002] With the continuous development of the machinery industry, the performance requirements for bearings are getting higher and higher, and the performance requirements for cages are also getting higher and higher. When the bearing rotates at high speed, the cage has to withstand a large centrifugal force, so a large amount of heat will be generated between the cage and the rolling element. The combined effect of force and heat will cause the cage to fail, and in severe cases, it will cause the cage to burn and break. Due to the gap between the pocket and the rolling element, the amount of movement of the steel ball in the pocket determines the degree of shaking, which determines the stability and service life of the bearing. The existing steel ball movement detection is generally carried out by fixing a dial indicator on the base to detect the steel ball, and readings are taken by manually pushing the steel ball. However, this measurement method easily causes an angular deviation between the probe of the dial indicator and the steel ball, resulting in inaccurate measured movement, and it is not convenient to measure the maximum movement of the steel ball. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a bearing steel ball movement detection device, which enables the measuring component to quickly obtain an angle horizontal to the base, making the detection of the steel ball movement more accurate and convenient.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bearing steel ball movement detection device, comprising a base, a workbench fixed on the base, a clamping assembly arranged on the base, an adjustment assembly, and a measuring assembly fixed on the adjustment assembly, the measuring assembly comprising a fixed sleeve, a differential cylinder sleeved on the outer diameter surface of the fixed sleeve, a screw rod being provided in the differential cylinder, the screw rod being threadedly connected to the inner wall surface of the fixed sleeve, the outer diameter surfaces of the fixed sleeve and the differential cylinder being provided with scale lines, a deep groove being provided at one end of the screw rod facing the workbench, and a sensing assembly being provided in the deep groove.

[0005] As a further improvement of the present invention, the sensing component includes a measuring rod slidably arranged in the deep groove, a magnetic joint fixedly connected to one end of the measuring rod, and a force sensor arranged at the bottom of the deep groove. A contact is provided at one end of the measuring rod, and a resistance rod is provided at the other end of the measuring rod. A reset spring is provided between the measuring rod and the force sensor, and an indicator light cooperating with the force sensor is also provided on the fixed sleeve.

[0006] As a further improvement of the present invention, the magnetic joint is threadedly connected to the end of the measuring rod, a limiting groove is provided in the magnetic joint to prevent the measuring rod from falling out, and the contact passes through and extends out of the magnetic joint.

[0007] As a further improvement of the present invention, the adjustment assembly includes an adjustment block, a slide, a first fixed rod, and a screw arranged on the base and mating with the slide thread. The slide is provided with a side plate, and an opening is provided in the middle of the side plate. The adjustment block is fixed to the side plate through the first fixed rod, and a through hole is provided on the adjustment block, and the fixed sleeve is fixed in the through hole.

[0008] As a further improvement of the present invention, the adjustment assembly further includes a second fixing rod, and the adjustment block is fixedly connected to the slide seat via the second fixing rod.

[0009] As a further improvement of the present invention, the clamping assembly includes a support rod, a swing rod rotatably matched with the support rod, and a fixing frame, the support rod is provided with a groove, the swing rod is provided with a protrusion matching with the groove, the protrusion is inserted in the groove and fits with the two side walls of the groove, the position of the support rod corresponding to the groove is provided with a locking member for adjusting the fixation or movement of the swing rod, the swing rod is provided with a threaded shaft, the fixing frame is slidably set on the threaded shaft, and locking nuts are provided at both ends of the fixing frame.

[0010] As a further improvement of the present invention, the locking piece is passed through a support rod and a protrusion, and the locking piece includes a clamping portion, a threaded shaft segment, and an optical axis shaft segment. The support rod is threadedly connected to the threaded shaft segment, and half of the shaft segment that cooperates with the protrusion and the locking piece is threadedly connected to the threaded shaft segment, and the other half is slidingly matched with the optical axis shaft segment.

[0011] As a further improvement of the present invention, the fixing frame is provided with a plurality of abutment rods along its circumference.

[0012] As a further improvement of the present invention, a drive assembly is further provided on the base, and the drive assembly includes a motor and a drive disk. The motor is arranged below the workbench corresponding to the base, and the drive disk is arranged on the output shaft of the motor and cooperates with the output shaft to prevent rotation.

[0013] The beneficial effects of the present invention are as follows: the device ensures that the measuring component is horizontal relative to the base, prevents the probe from tilting and causing inaccurate measurements, and can more accurately measure the movement of the steel ball through the measuring component. Setting the driving component can measure the movement of the steel ball in dynamic conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0015] Figure 2 This is a schematic cross-sectional view of a measurement assembly according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic cross-sectional view of a drive assembly according to an embodiment of the present invention;

[0017] Figure 4 It is a cross-sectional schematic diagram of a compression assembly according to an embodiment of the present invention.

[0018] Figure numbers: 1. Base; 2. Workbench; 3. Clamping assembly; 31. Support rod; 32. Swing rod; 33. Fixed frame; 34. Locking piece; 4. Adjusting assembly; 41. Adjusting block; 42. Slide; 43. Side plate; 44. First fixed rod; 45. Second fixed rod; 5. Measuring assembly; 51. Fixed sleeve; 52. Differential cylinder; 521. Screw rod; 522. Deep groove; 523. Sensing assembly; 5231. Measuring rod; 5232. Magnetic connector; 5233. Force sensor; 5234. Contact; 5235. Contact rod; 6. Driving assembly; 61. Motor; 62. Driving disk. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] Reference Figure 1-4As shown, a bearing steel ball movement detection device includes a base 1, a workbench 2 fixed on the base 1, a clamping assembly 3 set on the base 1, an adjusting assembly 4, and a measuring assembly 5 fixed on the adjusting assembly 4. The clamping assembly 3 is used to clamp the cage to prevent the cage from moving during the measurement process. The adjusting assembly 4 is used to adjust the position of the measuring assembly 5 relative to the steel ball. The measuring assembly 5 is used to detect the movement of the steel ball on the cage. The measuring assembly 5 includes a fixed sleeve 51 and a differential cylinder 52 sleeved on the outer diameter surface of the fixed sleeve 51. The differential cylinder 52 is provided with a screw rod 521, which is threadedly connected to the inner wall of the fixed sleeve 51. The outer diameter surfaces of the fixed sleeve 51 and the differential cylinder 52 are both provided with scale lines. The end of the screw rod 521 facing the workbench 2 is provided with a deep groove 522, and the deep groove 522 is provided with a sensing component 523. The sensing component 523 is used to detect whether the steel ball is in contact and prompt the inspection personnel to record and read the readings. The sensing component 523 includes a measuring rod 5231 slidably set in the deep groove 522, a magnetic suction receiving device fixedly connected to one end of the measuring rod 5231, and a magnetic suction receiving device fixedly connected to one end of the measuring rod 5231. The head 5232 is provided with a force sensor 5233 at the bottom of the deep groove 522. A contact 5234 is provided at one end of the measuring rod 5231, and a resistance rod 5235 is provided on the measuring rod 5231. A resistance rod 5235 is provided at the other end of the measuring rod 5231. A reset spring is provided between the measuring rod 5231 and the force sensor 5233. The reset spring is in contact with the housing of the force sensor 5233 and the measuring rod 5231. An indicator light cooperating with the force sensor 5233 is also provided on the fixed sleeve 51. The magnetic suction joint 5232 is used to attract the steel ball. When the contact 523 When the steel ball is squeezed and moves into the deep groove 522, the abutment rod 5235 abuts against the force sensor 5233, and the signal light comes on to indicate the movement. When the steel ball is separated from the contact 5234, the measuring rod 5231, under the action of the return spring, causes the abutment rod 5235 to separate from the force sensor 5233, and the indicator light goes out. In this embodiment, the magnetic connector 5232 is threadedly connected to the end of the measuring rod 5231. A limiting groove is provided in the magnetic connector 5232 to prevent the measuring rod 5231 from coming out. The contact 5234 passes through and extends out of the magnetic connector 5232.

[0021] The adjusting assembly 4 includes an adjusting block 41, a slide 42, a first fixing rod 44, and a screw provided on the base 1 and threadedly matched with the slide 42. The screw can be rotated by an external handle or a wrench. The slide 42 is provided with a side plate 43, and the middle part of the side plate 43 is provided with an opening. The adjusting block 41 is fixed to the side plate 43 by the first fixing rod. The adjusting block 41 can move on the opening of the side plate 43 to change the height of the adjusting block 41, and when the adjusting block 41 is fixedly connected, the fixing block abuts against the side plate 43 to ensure that the measuring assembly 5 and the base 1 remain horizontal, avoiding the phenomenon of tilted measurement between the contact 5234 and the steel ball. A through hole is provided on the adjusting block 41, and the fixing sleeve 51 Fixed in the through hole, the adjusting assembly 4 also includes a second fixing rod 45, the adjusting block 41 is fixedly connected to the slide 42 through the second fixing rod 45, and the second fixing rod 45 is provided to support the adjusting block 41 more stably. In this embodiment, the first fixing rod 44 and the second fixing rod 45 are both provided with threads and are threadedly connected to the adjusting block 41, and the adjusting block 41 is threadedly connected to the slide 42 through the second fixing rod 45. The clamping assembly 3 includes a support rod 31, a swing rod 32 rotatably matched with the support rod 31, and a fixing frame 33. The support rod 31 is provided with a groove, and the swing rod 32 is provided with a protrusion that cooperates with the groove. The protrusion is inserted in the groove and fits with the two side walls of the groove. The position of the corresponding groove of the support rod 31 is provided with a locking piece 34 for adjusting the fixing or movement of the swing rod 32. The swing rod 32 is provided with a threaded shaft, and the fixing bracket 33 is slidably set on the threaded shaft. Both ends of the fixing bracket 33 are provided with locking nuts, and the fixing bracket 33 is adjusted in height by the locking nuts at both ends. The locking piece 34 passes through the support rod 31 and the protrusion. The locking piece 34 includes a clamping portion, a threaded shaft section, and an optical axis shaft section. The support rod 31 is threadedly connected to the threaded shaft section, and half of the shaft section that cooperates with the protrusion and the locking piece 34 is threadedly connected to the threaded shaft section, and the other half is slidably matched with the optical axis shaft section. When the locking piece 34 is threadedly connected to the protrusion and the support rod 31 at the same time, the swing rod 32 is The threaded lock cannot move. When the locking piece 34 unscrews all its threaded shaft sections, the swing rod 32 can move along the circumference of the locking piece 34. The fixing frame 33 is provided with a plurality of abutment rods along its circumference. The abutment rods abut on the step surface between adjacent pockets of the retaining frame to fix the retaining frame. A driving assembly 6 is also provided on the base 1. The driving assembly 6 is used to drive the steel ball to rotate and detect the movement amount of the steel ball at different speeds. The driving assembly 6 includes a motor 61 and a driving disk 62. The motor 61 is arranged below the workbench 2 corresponding to the base 1. The driving disk 62 is arranged on the output shaft of the motor 61 and cooperates with the output shaft to prevent rotation. In this embodiment, the driving disk 62 and the output shaft are connected by a key.

[0022] The method of using this device is as follows: install the holder on the workbench 2, adjust the swing rod 32 to press the fixing frame 33 on the swing rod 32 onto the holder, adjust the locking nuts on both sides of the holder to tighten the holder, screw in the threaded shaft section of the locking piece 34 on the support rod 31 to lock the swing rod 32, rotate the screw to make the slide 42 close to the holder, adjust the first fixing rod 44 and the second fixing rod 45 to make the contact 5234 of the measuring component 5 installed on the adjustment block 41 align with the center line of the steel ball, rotate the differential cylinder 52 clockwise to make the magnetic joint 5232 abut the steel ball, push the steel ball to the left limit position, the indicator light lights up to record the left limit value, and then rotate the differential cylinder 52 counterclockwise to bring the steel ball to the right limit through the magnetic joint 5232 Value, when the steel ball is separated from the magnetic joint 5232 and the indicator light goes out, record the right limit value, the right limit value needs to be measured multiple times and the average value is taken. At this time, the absolute value of the difference between the two limit values is the movement amount of the steel ball; the device can also detect the steel ball in a dynamic state, by installing a drive disk 62 on the output shaft of the motor 61, the drive disk 62 simulates the inner ring of the bearing, and replaces the magnetic joint 5232 with a non-magnetic joint, repeating the above-mentioned static operation process of the steel ball, the difference is that when measuring the right limit value, when the indicator light is in an alternating state of light and off, slowly drive the contact 5234 to the right until the indicator light is completely off, and then slowly drive the contact 5234 until the indicator light begins to alternate and measure this data multiple times to take an average value.

[0023] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bearing steel ball movement detection device, comprising a base and a workbench fixed on the base, characterized in that: The cam is provided with a plurality of guide rails, and the guide rails are provided with a plurality of guide rails, and the guide rails are connected to the outer diameter surface of the fixed sleeve. The guide rails are connected to the inner wall surface of the fixed sleeve by threads. The outer diameter surfaces of the fixed sleeve and the differential cylinder are provided with scale lines. A deep groove is provided at one end of the guide rail facing the workbench, and a sensing assembly is provided in the deep groove. The sensing assembly includes a measuring rod slidably arranged in the deep groove, a magnetic joint fixedly connected to one end of the measuring rod, and a force sensor arranged at the bottom of the deep groove. A contact is provided at one end of the measuring rod, and a resistance rod is provided at the other end of the measuring rod. A reset spring is provided between the measuring rod and the force sensor. An indicator light cooperating with the force sensor is also provided on the fixed sleeve.

2. The bearing steel ball movement detection device according to claim 1, characterized in that: The magnetic joint is threadedly connected to the end of the measuring rod. A limiting groove is provided in the magnetic joint to prevent the measuring rod from falling out. The contact passes through and extends out of the magnetic joint.

3. The bearing steel ball movement detection device according to claim 1, characterized in that: The adjustment assembly includes an adjustment block, a slide, a first fixed rod, and a screw arranged on the base and threadedly matched with the slide. The slide is provided with a side plate, and an opening is provided in the middle of the side plate. The adjustment block is fixed to the side plate through the first fixed rod. The adjustment block is provided with a through hole, and the fixed sleeve is fixed in the through hole.

4. The bearing steel ball movement detection device according to claim 3, characterized in that: The adjustment assembly further includes a second fixing rod, and the adjustment block is fixedly connected to the slide seat via the second fixing rod.

5. The bearing steel ball movement detection device according to claim 1, characterized in that: The clamping assembly includes a support rod, a swing rod rotatably matched with the support rod, and a fixing frame. The support rod is provided with a groove, the swing rod is provided with a protrusion that matches the groove, the protrusion is inserted in the groove and fits with the two side walls of the groove, the position of the support rod corresponding to the groove is provided with a locking piece for adjusting the fixation or movement of the swing rod, the swing rod is provided with a threaded shaft, the fixing frame is slidably set on the threaded shaft, and locking nuts are provided at both ends of the fixing frame.

6. The bearing steel ball movement detection device according to claim 5, characterized in that: The locking piece is passed through a support rod and a protrusion, and the locking piece includes a clamping portion, a threaded shaft segment, and an optical axis shaft segment. The support rod is threadedly connected to the threaded shaft segment, and half of the shaft segment that cooperates with the protrusion and the locking piece is threadedly connected to the threaded shaft segment, and the other half is slidingly matched with the optical axis shaft segment.

7. The bearing steel ball movement detection device according to claim 5, characterized in that: The fixing frame is provided with a plurality of abutment rods along its circumference.

8. The bearing steel ball movement detection device according to claim 1, characterized in that: The base is also provided with a driving assembly, which includes a motor and a driving disk. The motor is arranged below the workbench corresponding to the base, and the driving disk is arranged on the output shaft of the motor and cooperates with the output shaft to prevent rotation.

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