Friction ring automatic measuring device with buffering function

Abstract

The utility model relates to a synchronizer friction cone ring testing fixture, in particular to a friction ring automatic measuring device with a buffering function. The technical problems that an existing friction ring conical opening measuring gauge has no buffering in the falling process of a measuring structure, deformation of a workpiece to be measured is large, and the measuring result is inaccurate are solved. The device comprises a base, a slide rail unit, a measuring module, a plurality of buffer dampers and a driving unit, the base comprises a base, a vertical supporting piece, a first transverse extending frame and a second transverse extending frame. The measuring module comprises a movable gland, a measuring conical seat and a displacement measuring head; during use, the driving unit drives the movable gland to move downwards until the lower end face of the movable gland presses the friction ring to be measured, so that the inner molded surface of the friction ring to be measured is attached to the conical surface of the measuring conical seat; the multiple buffer dampers are installed on the second transverse extension frame and used for slowing down the descending speed of the movable gland before the movable gland makes contact with the to-be-tested friction ring, then the impact force is reduced, and deformation of the to-be-tested friction ring is prevented.

Description

Technical Field

[0001] The utility model relates to a synchronizer friction cone ring inspection tool, in particular to an automatic friction ring measuring device with a buffering function. Background Art

[0002] The friction ring is the most critical component of the gearbox synchronizer. Its quality directly determines the performance of the synchronizer and even the entire gearbox. There are hundreds of types of friction rings, and the precision requirements are particularly high, especially the taper entry and exit, which is a key characteristic detection indicator of the friction ring and requires 100% detection. The precise measurement of the taper entry and exit of the friction ring has always been a difficult problem faced by the industry.

[0003] At present, the taper entry and exit of the friction ring is mainly measured by manual or mechanical gauges at home and abroad. The existing friction ring taper measurement gauge structure can be found in Chinese patent CN203364703U. The taper size rapid detection gauge includes a base, a linear guide, a slider, a guide block, a shaft, a guide wheel group and a handle. A mechanical method is used to move the counterweight and the ring gauge down to the ring gauge and the test product through the guide wheel group for assembly. The height difference between the end face of the test product and the ring gauge is detected, and the taper entry and exit is obtained through data processing. There is also a manual gauge structure, see Chinese patent CN207662314U. A taper comprehensive size go / no-go gauge gauge includes a go / no-go gauge, a core shaft, a positioning cone and an inspection platform. The friction cone ring to be measured is installed on the positioning cone, and the gap between the lower end face of the friction cone ring to be measured and the upper end face of the inspection platform is inspected by the go / no-go gauge. The above two structures usually require a 3KG or 5KG counterweight when measuring the taper mouth. Since the friction ring itself is easy to deform and there is no buffer space before contacting the workpiece, the workpiece will be impacted to varying degrees, resulting in poor measurement stability and large deviations in the measurement results, which in turn leads to the problem of synchronizer jamming due to inaccurate pairing. Therefore, while ensuring efficient and low-cost mass measurement of workpieces, it is particularly urgent to solve the impact problem and prevent deformation during the measurement process. In addition, there are mechanical methods in which the descent speed of the measuring cone is controlled by air pressure when it falls. The higher the air pressure, the faster the descent speed, and the lower the air pressure, the slower the descent speed. This causes the measurement results to be greatly affected by air pressure, and the requirement for fixed counterweights is completely lost. Utility Model Content

[0004] The utility model aims to solve the technical problems that the existing friction ring cone mouth measuring fixture has no buffer during the falling process of the measuring structure, resulting in large deformation of the workpiece to be measured and inaccurate measurement results, and the technical problem that the measurement process is affected by air pressure, resulting in the counterweight not meeting the requirements.

[0005] The technical solution of the utility model is:

[0006] The utility model discloses an automatic friction ring measuring device with a buffering function, comprising a base, a slide rail unit arranged on the base, a measuring module and a driving unit; the base comprises a base, a vertical support member fixedly arranged on the upper end surface of the base, a first transverse extension frame and a second transverse extension frame fixedly arranged on the vertical support member at one end, and the first transverse extension frame and the second transverse extension frame are arranged correspondingly up and down; a workbench is arranged on the base; the slide rail unit is fixedly arranged between the first transverse extension frame and the second transverse extension frame; the measuring module comprises a movable pressure cover corresponding to the workbench and slidably connected to the slide rail unit, and a measuring cone seat and at least three displacement probes respectively fixedly arranged on the workbench; the measuring cone seat is used for placing the friction ring to be measured; at least three displacement probes are arranged on the outer side of the measuring cone seat along the circumferential direction, and are used to contact the bottom surface of the friction ring to be measured and measure the displacement data of the friction ring to be measured; the driving unit is used to drive the movable pressure cover to move up and down;

[0007] Its special features include: including multiple buffer dampers;

[0008] The movable gland comprises an upper gland, a lower gland and a connecting piece arranged between the upper gland and the lower gland;

[0009] The upper end and the lower end of the connecting member are respectively fixedly connected to the center of the upper gland and the lower gland;

[0010] The upper pressure cover is slidably connected to the slide rail unit; the lower pressure cover is suspended between the second transverse extension frame and the measuring cone seat, and is used to press on the friction ring to be measured when moving downward so that the inner surface of the friction ring to be measured fits with the conical surface of the measuring cone seat;

[0011] The plurality of buffer dampers are mounted on the upper end surface of the second transverse extension frame and are located between the second transverse extension frame and the upper pressure cover, and are evenly distributed around the periphery of the connecting member along the circumferential direction.

[0012] Furthermore, it also includes a floating pad and multiple springs; the floating pad is an annular structure, which is sleeved on the lower periphery of the measuring cone seat, and the floating pad is provided with through holes for at least three displacement probes to pass through; the multiple springs are arranged between the workbench and the floating pad, and are evenly distributed on the periphery of the measuring cone seat along the circumferential direction.

[0013] Furthermore, a control processing center is provided in the base and is connected to the driving unit and at least three displacement probes respectively, and is used to control the switch of the driving unit and process the measurement data.

[0014] Furthermore, the number of the buffer dampers is two.

[0015] Furthermore, there are four displacement probes and four springs.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model is an automatic friction ring measuring device with a buffering function. A buffer damper is installed on the second horizontal extension frame, so that before the mobile gland descends to contact the friction ring to be measured, the buffer damper can greatly reduce the descending speed of the mobile gland, avoid the impact on the friction ring to be measured, eliminate the deformation caused by the impact, solve the deformation problem in the automatic measurement process, make the measurement result more accurate, and ensure the quality of the synchronizer. At the same time, before the mobile gland contacts the buffer damper, the descending speed is not affected, the entire buffering process is 2 seconds, and the measurement rhythm of the friction ring is not affected; and the measurement process is not affected by air pressure, and the final counterweight meets the requirements.

[0018] 2. The utility model is an automatic friction ring measuring device with a buffer function. The floating pad can ensure that the friction ring to be measured is placed without tilting, and the posture of the friction ring to be measured can be corrected, so that the conical surface of the friction ring and the conical surface of the measuring cone seat can be more fully contacted, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a structural schematic diagram of an embodiment of a friction ring automatic measuring device with a buffering function.

[0020] Figure markings: 1-slide rail, 2-movable pressure cover, 21-upper pressure cover, 22-lower pressure cover, 23-connecting piece, 3-buffer damper, 4-measuring cone seat, 5-displacement probe, 6-floating pad, 7-spring, 8-driving unit, 9-first lateral extension frame, 10-second lateral extension frame, 11-base, 12-workbench, 13-friction ring to be measured. DETAILED DESCRIPTION

[0021] The present invention is described in detail below through embodiments and drawings.

[0022] The utility model discloses an automatic friction ring measuring device with a buffering function. Figure 1As shown, it includes a base, a slide rail unit arranged on the base, a measuring module, a driving unit 8, two buffer dampers 3, a floating pad 6 and four springs 7. The base includes a base 11, a vertical support member fixedly arranged on the upper end surface of the base 11, a first transverse extension frame 9 and a second transverse extension frame 10, one end of which is fixedly arranged on the vertical support member, and the first transverse extension frame 9 and the second transverse extension frame 10 are arranged correspondingly up and down. A workbench 12 is arranged on the base 11. The slide rail unit is fixedly arranged between the first transverse extension frame 9 and the second transverse extension frame 10. The slide rail unit includes two vertically arranged slide rails 1, one end of the two slide rails 1 is respectively fixedly connected to the first transverse extension frame 9, and the other end is respectively fixedly connected to the second transverse extension frame 10. The measuring module includes a movable pressure cover 2 corresponding to the workbench 12 and slidably connected to the slide rail unit, as well as a measuring cone seat 4 and four displacement probes 5 respectively fixedly arranged on the workbench 12. Among them, the side wall of the measuring cone seat 4 is divided into a two-section structure, the outer surface of the upper side wall is a cone surface, the height, outer surface and outer diameter of the cone surface are respectively adapted to the height, inner surface and inner diameter of the friction ring 13 to be measured. When in use, the friction ring 13 to be measured is sleeved at the cone surface position of the measuring cone seat 4; the outer surface of the lower side wall is a cylindrical surface. Four displacement probes 5 are arranged on the outside of the measuring cone seat 4 along the circumferential direction, which are used to contact the bottom surface of the friction ring 13 to be measured and measure the displacement data of the friction ring 13 to be measured, and the cone mouth inlet and outlet are obtained through data processing. The driving unit 8 is used to drive the movable pressure cover 2 to move up and down, and the utility model adopts a cylinder for driving. The movable pressure cover 2 includes an upper pressure cover 21, a lower pressure cover 22 and a connecting member 23 arranged between the upper pressure cover 21 and the lower pressure cover 22. The upper end and the lower end of the connecting member 23 are respectively fixedly connected to the center of the upper pressure cover 21 and the lower pressure cover 22. The two ends of the upper pressure cover 21 are respectively connected to the two slide rails 1 in the slide rail unit in a sliding manner; the lower pressure cover 22 is suspended between the second horizontal extension frame 10 and the measuring cone seat 4, and the height meets the operation requirements. When in use, the automatic measuring device is started, and the upper pressure cover 21 is driven by the driving unit 8 to move downward along the slide rail unit and drive the lower pressure cover 22 to fall. The displacement probe 5 contacts the bottom surface of the friction ring 13 to be measured, and continues to press until the bottom surface of the friction ring 13 to be measured contacts the floating pad 6, and the inner surface of the friction ring 13 to be measured is tightly fitted with the conical surface of the measuring cone seat 4, and the floating pad 6 can adjust the posture of the friction ring 13 to be measured. At this time, the displacement probe 5 stops moving to trigger data acquisition, and the displacement height value is extracted by the displacement probe 5, and then the measured data is processed by the data processor to obtain the cone mouth inlet and outlet. Two buffer dampers 3 are installed on the upper end surface of the second horizontal extension frame 10 and are located between the second horizontal extension frame 10 and the upper pressure cover 21, and are symmetrically arranged at the position of the outer periphery of the connecting member 23 close to the slide rail. The floating pad 6 is an annular structure sleeved on the lower cylindrical surface of the measuring cone seat 4, and the floating pad 6 is provided with through holes for four displacement probes 5 to pass through. Four springs 7 are arranged between the workbench and the floating pad 6 and are evenly distributed around the periphery of the measuring cone seat 4 in the circumferential direction to support the floating pad 6.

[0023] The base 11 is also provided with a control processing center connected to the drive unit 8 and at least three displacement probes 5 respectively, for controlling the switch of the drive unit 8 (ie, controlling the gas circuit switch of the cylinder) and processing the measurement data using a data processor.

[0024] The working process of the utility model is as follows:

[0025] 1) Install the buffer damper 3 on the second transverse extension frame 10 and adjust the resistance of the buffer damper 3;

[0026] 2) Clean the friction ring 13 to be tested and place it on the measuring cone seat 4;

[0027] 3) Start the automatic measuring device, the movable gland 2 descends under the driving action of the cylinder, and the descending speed is slowed down under the action of the buffer damper 3. When the movable gland 2 is pressed down until the bottom surface of the friction ring 13 to be measured contacts the floating pad 6, the inner conical surface of the friction ring 13 to be measured is tightly fitted with the conical surface of the measuring cone seat 4;

[0028] 4) Using the displacement probe 5 to measure displacement data, and sending it to the data processor for processing to obtain the measurement result;

[0029] 5) Lift the movable pressure cover 2 and the measurement is completed.

[0030] It has been verified that before the improvement, the measurement accuracy of the automatic measuring device was greater than 0.05. After the improvement, that is, after adding the buffer damper 3, floating pad 6 and spring 7 proposed in this scheme, the measurement accuracy was within 0.02. The measurement accuracy was greatly improved, the detection efficiency was not affected in any way, and the synchronizer assembly quality accident was zero.

Claims

1. An automatic friction ring measuring device with a buffering function, comprising a base, a slide rail unit arranged on the base, a measuring module and a driving unit (8); the base comprises a base (11), a vertical support member fixedly arranged on the upper end surface of the base (11), a first transverse extension frame (9) and a second transverse extension frame (10) fixedly arranged on the vertical support member at one end, and the first transverse extension frame (9) and the second transverse extension frame (10) are arranged correspondingly up and down; a workbench (12) is arranged on the base (11); the slide rail unit is fixedly arranged on the first transverse extension frame (9) and the second transverse extension frame (10) The measuring module comprises a movable pressure cover (2) corresponding to the workbench (12) and slidably connected to the slide rail unit, and a measuring cone seat (4) and at least three displacement probes (5) respectively fixedly arranged on the workbench (12); the measuring cone seat (4) is used to place the friction ring (13) to be measured; at least three displacement probes (5) are arranged on the outer side of the measuring cone seat (4) along the circumferential direction, and are used to contact the bottom surface of the friction ring (13) to be measured and measure the displacement data of the friction ring (13) to be measured; the driving unit (8) is used to drive the movable pressure cover (2) to move up and down; Features: comprising a plurality of buffer dampers (3); The movable pressure cover (2) comprises an upper pressure cover (21), a lower pressure cover (22), and a connecting piece (23) arranged between the upper pressure cover (21) and the lower pressure cover (22); The upper end and the lower end of the connecting member (23) are respectively fixedly connected to the center of the upper gland (21) and the lower gland (22); The upper pressure cover (21) is slidably connected to the slide rail unit; the lower pressure cover (22) is suspended between the second transverse extension frame (10) and the measuring cone seat (4), and is used to press on the friction ring (13) to be measured when moving downward so that the inner surface of the friction ring (13) to be measured fits with the conical surface of the measuring cone seat (4); The plurality of buffer dampers (3) are mounted on the upper end surface of the second transverse extension frame (10) and are located between the second transverse extension frame (10) and the upper pressure cover (21), and are evenly distributed around the periphery of the connecting member (23) in the circumferential direction.

2. The friction ring automatic measuring device with buffer function according to claim 1, characterized in that: It also includes a floating pad (6) and a plurality of springs (7); The floating pad (6) is an annular structure, sleeved on the lower periphery of the measuring cone seat (4), and the floating pad (6) is provided with through holes for at least three displacement probes (5) to pass through; The plurality of springs (7) are arranged between the workbench (12) and the floating pad (6), and are evenly distributed around the periphery of the measuring cone seat (4) in the circumferential direction.

3. The friction ring automatic measuring device with buffer function according to claim 2, characterized in that: A control processing center is provided in the base (11) and is connected to the drive unit (8) and at least three displacement probes (5) respectively, and is used to control the switch of the drive unit (8) and process measurement data.

4. The friction ring automatic measuring device with buffer function according to claim 3 is characterized in that: The number of the buffer dampers (3) is two.

5. The friction ring automatic measuring device with buffer function according to claim 4 is characterized in that: There are four displacement probes (5); There are four springs (7).

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