PTFE bearing friction thickness detection device
By designing a friction thickness detection device for PTFE bearings, the rotating rod and positioning mechanism realize simultaneous fixing and detection of multiple bearings is solved, and the problems of slow detection speed and data deviation in the prior art are achieved, and efficient and accurate bearing thickness detection is achieved.
Patent Information
- Application Number
- CN202411987166.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art cannot quickly detect the thickness of multiple PTFE bearings simultaneously, resulting in slow detection speed and long cycles, and manual operation can easily lead to data deviations.
A PTFE bearing thickness detection device is designed, using components such as rotating rods, positioning mechanisms and dial meters. Through the cooperation of active and driven end face ratchets, multiple bearings can be fixed and detected simultaneously.
The device can detect the thickness of multiple bearings simultaneously, significantly improve the detection speed, reduce the detection cycle, and reduce human error.
Smart Images
Figure CN119879694A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of mechanical measurement, in particular to a PTFE bearing friction thickness detection device. Background Art
[0002] Bearings are an indispensable key component in rotating mechanical equipment. Their main function is to support the shaft while reducing the friction between moving parts.
[0003] Traditional basic bearings often use liquid lubrication to reduce friction and wear damage. However, liquid lubrication often faces complex elastohydrodynamic lubrication conditions and cannot achieve the expected stable lubrication effect. In order to obtain a stable and long-term lubrication state and effectively extend the service life of basic transmission bearings, solid self-lubricating materials are gradually replacing liquid lubrication and becoming the new darling of lubrication systems. Among them, polymers have been widely used in various mechanical parts lubrication systems due to their many excellent properties such as low friction, high wear resistance, and high load-bearing capacity. The new PTFE bearing uses polytetrafluoroethylene (PTFE) as the sliding inner layer, which effectively avoids the high subsequent maintenance costs of liquid lubrication. Its dry lubrication characteristics and long-term stability have the potential to serve in extreme working conditions and can be used in transmission parts such as space station robotic arms.
[0004] External loads such as mechanical stress and thermal stress are transmitted to the bonding interface through the coating along the thickness direction, which is the direct cause of the bonding failure of the contact interface. The thickness of the coating affects the attenuation of the external load when passing through the layer. Therefore, it is particularly important to accurately evaluate the thickness of the PTFE bearing. The existing bearing thickness detection device can only detect the thickness of one bearing at a time, which limits the detection speed and increases the detection cycle. Frequent manual replacement of the tested parts not only reduces work efficiency, but may also cause data deviation due to human factors. Summary of the invention
[0005] The present invention is intended to provide a PTFE bearing thickness detection device to solve the problem that the prior art can only detect the thickness of one bearing at a time.
[0006] A PTFE bearing friction thickness detection device in the present scheme comprises a rotating rod, the rotating rod is connected to a fixed frame, the fixed frame is provided with a plurality of fixing rods, and the plurality of fixing rods are bolted with dial indicators, the rotating rod is connected to a driver driving it to rotate, and the rotating rod is evenly distributed with a plurality of positioning mechanisms, the positioning mechanism comprises a fixed disk and an active end face ratchet, the fixed disk and the active end face ratchet are both fixedly connected to the rotating rod, the fixed disk is slidably connected with a plurality of limit rods, the limit rods slide along the radial direction of the fixed disk, the end of the limit rod is provided with a holding block, the rotating disk is slidably connected to the rotating rod, the end face of the rotating disk is provided with a driven end face ratchet, the driven end face ratchet cooperates with the active end face ratchet for use, the rotating disk is fixedly connected with a rotating drum, the rotating drum is sleeved on the rotating rod, and an arc-shaped sliding groove is ringed on the rotating disk, one end of the sliding groove is close to the center of the disk, and the other end of the sliding groove is close to the edge of the disk, and the limit rod is slidably connected in the sliding groove.
[0007] The working principle and beneficial effects of this solution are as follows: when in use, multiple bearings are respectively sleeved outside the positioning mechanism. Since the turntable and the rotating rod are connected through the active end face ratchet and the driven end face ratchet, the active end face ratchet and the driven end face ratchet are no longer in contact by pulling the rotating drum, so that the turntable can rotate independently. Then, the turntable is rotated, and the rotation of the turntable drives the slide groove to rotate, thereby driving the limit rod slidably connected to the slide groove to move along the slide groove. Since the limit rod is slidably connected to the fixed plate, the limit rod is limited by the fixed plate and can only move in a straight line along the radial direction of the fixed plate. Therefore, with the setting of the arc slide groove, multiple limit rods will move in a direction gradually away from the axis of the fixed plate, thereby causing multiple abutment blocks to diverge outward with the axis of the fixed plate, and finally the bearing can be fixed. Then the rotating drum is moved back to make the active end face ratchet cooperate with the driven end face ratchet, and then the same The method is used to fix the bearings on other positioning mechanisms in sequence. After all the bearings are fixed, multiple dial indicators are moved to the top of the bearings respectively, so that the measuring rod just touches the bearing surface without generating additional pressure. The driver is started, and the driver drives the rotating rod to rotate. The rotation of the rotating rod drives the fixed disk and the rotating disk to rotate together. Since the active end face ratchet and the driven end face ratchet cooperate, the rotation of the rotating rod can drive the rotating disk to rotate. Therefore, the rotation of the rotating rod can drive multiple positioning mechanisms to rotate together, thereby driving multiple bearings to rotate together. At this time, the dial indicator can detect the thickness of the outer wall of the bearing. By observing the degree of the dial indicator, it can be determined whether the thickness of the bearing wall is consistent; after the detection is completed, move the dial indicator away from the bearing, and then pull the rotating drum respectively, and rotate the rotating disk in the opposite direction, so that the abutment block on the limit rod no longer abuts the bearing, and then remove the bearings one by one. The device in this scheme can fix multiple bearings and detect multiple bearings at the same time, and then remove them one by one. This device can speed up the detection speed of the bearing and reduce the detection cycle.
[0008] Furthermore, the abutment block is arc-shaped. The arc-shaped abutment block better matches the inner wall of the bearing, can increase the contact surface, and is convenient for clamping the bearing.
[0009] Furthermore, a positioning piece is provided on the rotating rod, a spring is connected between the positioning piece and the rotating drum, and the spring is sleeved on the rotating rod. After pulling the rotating drum, the rotating drum is released, and under the action of the spring, the driven end face ratchet can return to a state of matching with the active end face ratchet.
[0010] Further, the spring is rotatably connected to the drum so that when the drum rotates, the spring does not move with it.
[0011] Furthermore, the plurality of limit rods are all fixedly connected to a sliding rod, and the limit rods are slidably connected to the sliding grooves via the sliding rods.
[0012] Furthermore, the driver is a handle, and the handle is fixedly connected to the rotating rod. Turning the handle can drive the entire rotating rod to rotate, which is convenient for controlling the rotation of the rotating rod.
[0013] Furthermore, the driver is a reduction motor, the output shaft of the reduction motor is fixedly connected to the rotating rod, and the housing of the reduction motor is fixedly connected to the fixing frame. Using a motor is more intelligent and can reduce manpower. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of a PTFE bearing friction thickness detection device of the present invention;
[0015] Figure 2 for Figure 1 Side view of the center turntable. DETAILED DESCRIPTION
[0016] The following is a further detailed description through specific implementation methods:
[0017] The figure marks in the drawings of the specification include: base 1, fixed plate 2, reduction motor 3, fixed rod 4, retaining ring 5, bolt 6, dial indicator 7, measuring rod 8, rotating rod 9, fixed plate 10, limit rod 11, supporting block 12, sliding rod 13, active end face ratchet 14, driven end face ratchet 15, turntable 16, rotating drum 17, spring 18, positioning plate 19, and slide groove 20.
[0018] The embodiment is basically as shown in the attached Figure 1 and Figure 2As shown: a PTFE bearing friction thickness detection device comprises a fixed frame, the fixed frame comprises a base 1 and fixed plates 2 fixed on both sides of the base 1, three fixed rods 4 are also arranged on the base 1, the three fixed rods 4 are all connected with a clamping ring 5 by bolts 6, the clamping ring 5 is fixedly connected with a dial indicator 7, a rotating rod 9 is rotatably connected between the fixed plates 2, one end of the rotating rod 9 passes through the fixed plate 2, the rotating rod 9 is connected with a driver driving it to rotate, the driver is a reduction motor 3, the output shaft of the reduction motor 3 is fixedly connected to the rotating rod 9, the housing of the reduction motor 3 is fixedly connected to the fixed frame, three positioning mechanisms are evenly distributed on the rotating rod 9, the positioning mechanisms comprise a fixed disk 10 and an active end face ratchet 14, the fixed disk 10 and the active end face ratchet 14 are all fixedly connected to the rotating rod 9, three limit rods 11 are slidably connected to the fixed disk 10, and the three limit rods 11 are all connected with a sliding rod 13, The length of the slide bar 13 is greater than the depth of the slide groove 20, and the limit rod 11 slides in the radial direction of the fixed disk 10. The end of the limit rod 11 is provided with an arc-shaped abutment block 12, the turntable 16 is horizontally slidably connected with the turntable 9, and the end face of the turntable 16 is provided with a driven end face ratchet 15, and the driven end face ratchet 15 is used in conjunction with the active end face ratchet 14. The turntable 16 is fixedly connected with a rotating cylinder 17, and the rotating cylinder 17 is sleeved on the turntable 9. The rotating cylinder 17 is horizontally slidably connected with the turntable 9, and a positioning piece 19 is provided on the turntable 9. A spring 18 is connected between the positioning piece 19 and the rotating cylinder 17, and the spring 18 is rotatably connected with the rotating cylinder 17. The spring 18 is sleeved on the turntable 9, and three arc-shaped slide grooves 20 are arranged on the turntable 16. One end of the slide groove 20 is close to the center of the disk, and the other end of the slide groove 20 is close to the edge of the disk. The three slide bars 13 are slidably connected in the three slide grooves 20 respectively.
[0019] When in use, the three bearings are respectively sleeved outside the positioning mechanism. Since the turntable 16 is connected to the rotating rod 9 through the active end face ratchet 14 and the driven end face ratchet 15, by pulling the rotating cylinder 17, the active end face ratchet 14 and the driven end face ratchet 15 are no longer in contact, so that the turntable 16 can rotate alone, and then the turntable 16 is rotated, and the rotation of the turntable 16 drives the slide 20 to rotate, thereby driving the slide bar 13 slidably connected to the slide 20 to move with the slide 20. Since the slide bar 13 is fixedly connected to the limit rod 11, and the limit rod The three limiting rods 11 are slidably connected with the fixed plate 10, so the limiting rod 11 is limited by the fixed plate 10 and can only move linearly along the radial direction of the fixed plate 10. Therefore, in conjunction with the setting of the arc-shaped slide groove 20, the three limiting rods 11 will move with the slide rod 13 in a direction gradually away from the axis of the fixed plate 10, so that the three abutting blocks 12 diverge outward from the axis of the fixed plate 10, and finally the bearing can be fixed. The rotating cylinder 17 is released, and under the action of the spring 18, the driven end face ratchet 15 can be restored to the position matched with the active end face ratchet 14. State, make the active end face ratchet 14 cooperate with the driven end face ratchet 15, and then fix the bearings on other positioning mechanisms in turn in the same way. After all the bearings are fixed, move the three dial indicators 7 to the top of the three bearings respectively, let the measuring rod 8 just touch the bearing surface without generating additional pressure, start the reduction motor 3, the reduction motor 3 drives the rotating rod 9 to rotate, and the rotation of the rotating rod 9 drives the fixed plate 10 and the rotating disk 16 to rotate together. Since the active end face ratchet 14 and the driven end face ratchet 15 cooperate, the rotation of the rotating rod 9 can drive the rotating disk 16 to rotate. Therefore, the rotation of the rotating rod 9 can drive the three positioning mechanisms to rotate together, thereby driving the three bearings to rotate together. At this time, the dial indicator 7 can detect the thickness of the outer wall of the bearing. By observing the degree of the dial indicator 7, it can be determined whether the thickness of the bearing wall is consistent; after the detection is completed, move the dial indicator 7 away from the bearing, and then pull the rotating drum 17 respectively, and rotate the rotating disk 16 in the opposite direction, so that the abutting block 12 on the limit rod 11 no longer abuts the bearing, and then the bearings can be removed one by one.
[0020] The difference between the embodiment 2 and the embodiment 1 is that the driver is a handle, and the handle is fixedly connected to the rotating rod 9. The entire rotating rod 9 can be driven to rotate by rotating the handle, so that the rotating rod 9 can be easily controlled to rotate.
[0021] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A PTFE bearing friction thickness detection device, characterized in that: The cam is provided with a plurality of guide wheels, and the guide wheels are connected to the fixed frame by a plurality of bolts. The guide wheels are connected to a plurality of drive wheels for driving the cam to rotate. The guide wheels are connected to a plurality of drive wheels for driving the cam to rotate.
2. A PTFE bearing friction thickness detection device according to claim 1, characterized in that: The abutting block is arc-shaped.
3. A PTFE bearing friction thickness detection device according to claim 2, characterized in that: A positioning piece is arranged on the rotating rod, a spring is connected between the positioning piece and the rotating cylinder, and the spring is sleeved on the rotating rod.
4. A PTFE bearing friction thickness detection device according to claim 3, characterized in that: The spring is rotatably connected to the drum.
5. A PTFE bearing friction thickness detection device according to claim 4, characterized in that: The plurality of limit rods are all fixedly connected with a sliding rod, and the limit rods are slidably connected with the sliding grooves through the sliding rods.
6. A PTFE bearing friction thickness detection device according to claim 5, characterized in that: The driver is a handle, and the handle is fixedly connected to the rotating rod.
7. A PTFE bearing friction thickness detection device according to claim 5, characterized in that: The driver is a reduction motor, the output shaft of the reduction motor is fixedly connected to the rotating rod, and the housing of the reduction motor is fixedly connected to the fixing frame.