CN213455417U - Automatic measuring instrument - Google Patents
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- CN213455417U CN213455417U CN202021648715.5U CN202021648715U CN213455417U CN 213455417 U CN213455417 U CN 213455417U CN 202021648715 U CN202021648715 U CN 202021648715U CN 213455417 U CN213455417 U CN 213455417U
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Abstract
The utility model provides an automatic measuring instrument, which belongs to the technical field of bearing detection, and comprises a central controller, a detection platform, an upper detection tool, a lower detection tool, an upper loading mechanism and a lower loading mechanism, wherein the upper detection tool and the lower detection tool are used for fixing the outer ring of a bearing, and the lower detection tool can be detachably fixed on or placed on a lower tool seat; the upper loading mechanism and the lower loading mechanism are both provided with an actuator and a displacement sensor, the actuator comprises a fixed end and a movable end, the fixed end is fixedly arranged relative to the detection platform, and the movable end can vertically move up and down relative to the detection platform; the displacement sensor is arranged on the side wall of the movable end, which faces to the side where the measured bearing is located. The utility model discloses circle the axial internal clearance in fixed, the detection of the outer lane of bearing, more be close to in operating condition to detect the displacement variation respectively in through two directions, detect the accuracy nature of detection effectively improved with the axial internal clearance split for two parts respectively.
Description
Technical Field
The utility model relates to a bearing detecting instrument field especially relates to an automatic measuring instrument for detecting bearing radial play.
Background
The axial play of the bearing is an important criterion for judging the quality of the bearing, for example, the size of the axial play determines the service life of the bearing to a certain extent: when the axial clearance of the bearing is overlarge, the bearing has large difference change in rotating speed, so that the sliding abrasion between the rolling body and the ferrule can be generated, and the failure of the bearing is accelerated. The measure of axial play is the average of the axial distances moving from one axial limit position to the opposite limit position.
Currently, the detection of the axial play of the bearing generally has two forms:
1. the clearance measuring instrument with higher precision is used for detecting, the clearance is detected by the instrument, the axial clearance of the bearing can be accurately measured, and the operation is more complex.
2. The method has the advantages that simple measurement is carried out by using a simple measuring device, the bearing clearance can be simply measured by using the method, the operation is relatively simple, the precision is low, and the method is suitable for measuring the individual bearing.
Therefore, both the above two measuring devices are difficult to meet the requirement of mass and high-precision detection in the actual bearing production.
Based on this, the present application is proposed.
Disclosure of Invention
To prior art's not enough, for avoiding because the problem that bearing axial play parameter harmful effects bearing life reduces, the utility model provides an automatic measuring instrument, its simple structure, the operation of being convenient for and detection precision are higher, satisfy the actual production and detect the demand to improve the bearing qualification rate, reduce the processing cost.
In order to achieve the purpose, the automatic measuring instrument comprises a central controller, a detection platform, an upper detection tool, a lower detection tool, an upper loading mechanism and a lower loading mechanism, wherein the upper detection tool and the lower detection tool are used for fixing the outer ring of a bearing, and the lower detection tool can be detachably fixed on or placed on a lower tool seat; the upper loading mechanism and the lower loading mechanism are both provided with an actuator and a displacement sensor, the actuator comprises a fixed end and a movable end, the fixed end is fixedly arranged relative to the detection platform, and the movable end can vertically move up and down relative to the detection platform; the displacement sensor is arranged on the side wall of the movable end, which faces to the side where the measured bearing is located.
An upper tool seat is arranged on one side, opposite to the lower detection tool, of the movable end of the actuator of the upper loading mechanism, and the upper detection tool is installed on the upper tool seat; or the upper detection tool is stacked on a detected bearing placed on the lower detection tool, and an upper tool seat matched with the upper detection tool is arranged on one side, opposite to the lower detection tool, of the movable end of the actuator of the upper loading mechanism.
The upper loading mechanism and the lower loading mechanism are both provided with a force application tool, and the force application tool and the displacement sensor are arranged in parallel and are arranged on the tail end of the movable part of the actuator together. In order to facilitate detection, a measuring head of the displacement sensor is exposed out of the end face of one end, facing the measured bearing, of the force application tool. The upper tool seat and the lower tool seat are respectively provided with a hole or a groove through which the force application tool and the displacement sensor can pass; or the upper tool seat and the lower tool seat are both of sleeve structures.
In the structure, the upper detection tool and the lower detection tool are matched, the outer ring of the bearing can be fixed under the condition of applying load, and the inner ring of the detected bearing is applied with load through the force application tool, so that the inner ring is displaced in the axial direction, and finally, the displacement sensor detects radial play of the detected bearing in two axial directions.
Because above-mentioned structure has controlled the outer lane of bearing steadily, has prevented it from moving indiscriminately, has effectively avoided the outer lane to rock or the displacement influence in the testing process detects the accuracy nature of structure, and, the utility model discloses a direct displacement variation volume through detecting the single ascending measured bearing of side again adds the displacement variation volume in two directions and reachs the structure, and this detection data is directly perceived, indirect error and artificial interference are few, and it is high to detect the structure accuracy.
Furthermore, in order to ensure that the loading mechanism applies stable and uniform load, the force application tool is of a sleeve structure, and the force application tool and the movable end of the actuator are detachably and fixedly connected into a whole through another sleeve structure. The displacement sensor and the force application tool are coaxially arranged. In the structure, the displacement sensor and the force application tool are coaxially sleeved, so that on one hand, the space inside the force application tool can be fully utilized, the structure is optimized, and the space utilization rate is improved, on the other hand, the displacement sensor is positioned at the central position, the axial clearance generated by the measured bearing under the load action can be prevented from being influenced by the displacement sensor, and the detection precision is ensured.
In order to avoid the damage of the workpiece caused by the hard collision between the actuator and the upper detection tool or the lower detection tool, a buffer spring is sleeved between the tail end of the moving part of the actuator and the force application tool in the upper loading mechanism or the lower loading mechanism, one end of the buffer spring is abutted to a stop inside the force application tool, and the other end of the buffer spring is matched with the tail end of the moving part.
Furthermore, the middle part of the outer diameter surface of the upper tool seat is convexly provided with a limiting bulge, the upper part of the upper detection tool is sleeved on the lower part of the upper tool seat, and the upper end surface of the upper detection tool is in contact fit with the limiting bulge, so that the lower part of the upper tool seat is fixed with the upper part of the upper detection tool in the matching position.
Through the structure, when the same bearing or the same type of bearing or the same batch of bearings are detected, the upper tool detection tool and the lower tool detection tool can consistently fix the detected bearing on the same position, and the accuracy of the axial clearance of the detected bearing under the same control program is further ensured.
Furthermore, the upper tool seat is arranged on the lower surface of the platform, and another buffer spring is arranged between the top of the upper tool seat and the bottom of the mounting groove of the mounting platform, so that the bearing to be tested is prevented from being crushed in the detection process, and the buffer function is achieved; meanwhile, when the upper detection tool is made to pass through the buffer spring, the buffer spring exerts pressure on the detected bearing mainly by means of the elasticity of the buffer spring, so that the detected bearing is fixed between the upper detection tool and the lower detection tool, and the fixing effect is achieved. In order to enable the upper tool seat to be independent of the upper loading mechanism and be matched with the lower tool seat to fix the bearing to be detected, the mounting platform can be assembled on the supporting column in a sliding mode, and the driving mechanism drives the mounting platform to reciprocate perpendicular to the detection platform.
In order to enable the upper tool seat to tightly press the detected bearing between the upper detection tool and the lower detection tool, a pre-tightening mechanism is further installed between the upper tool seat and the installation platform. The pre-tightening mechanism comprises a pre-tightening bolt, a pre-tightening spring and a pre-tightening pressing block, wherein the small end of the pre-tightening bolt penetrates through the mounting platform from the upper surface of the mounting platform to be in threaded connection with the upper tool seat below the mounting platform, the pre-tightening spring is assembled between one end of the large end of the pre-tightening bolt and the pre-tightening pressing block, and the pre-tightening pressing block is detachably fixed on the mounting platform through the bolt.
In order to facilitate replacement of the lower detection tool to adapt to different color bearings, the lower tool seat is a protruding seat, and the lower part of the lower detection tool is sleeved on the lower tool seat and is embedded with the upper part of the lower tool seat.
In order to avoid pressing the ring to be measured in the fixing process, further, the outer diameter surface of one side of the lower tool seat, the upper tool seat and the measured bearing in contact fit is aligned with the outer diameter surface of the measured bearing.
In order to ensure the stability of the matching between the upper detection tool and the detected bearing, further, an outer annular edge is arranged in the middle of the upper detection tool. The outer ring edge can enlarge the area of the upper detection tool, and the weight near the edge of the upper detection tool is increased by utilizing the area, so that the lower part of the upper detection tool is in close and stable contact with the outer ring of the detected bearing when in contact matching.
Furthermore, the upper loading mechanism and the lower loading mechanism are provided with position sensors for detecting the movement conditions of the upper loading mechanism and the lower loading mechanism, the position sensors are laser ranging sensors, and the detection direction of the position sensors is perpendicular to the movement direction of the upper loading mechanism and the lower loading mechanism.
Further, set the gasket in going up the detection frock, detecting the frock down, the gasket external diameter is greater than the inner circle internal diameter of the bearing under test, is less than the outer lane internal diameter of the bearing under test, especially is less than the inner bore diameter of going up detection frock, detecting frock and the adjacent one side of gasket down. In addition, through the gasket, the axial displacement on the measured bearing is integrated and consistent, so that the detection is convenient, and the detection precision is improved. In addition, owing to adopted the gasket, the utility model discloses when detecting the axial internal clearance, utilize gasket transmission effect, can need not the rotation and carry out the measurement that different positions carried out the axial internal clearance to being surveyed the bearing.
The utility model has the advantages as follows:
the utility model discloses a circle the axial play in fixed, the detection of the outer lane of bearing, both more be close to in operating condition, be favorable to detecting out the axial play who goes out to press close to operating condition to detect the displacement variation volume respectively in two directions, be two parts with the axial play split and carry out difference, solitary detection, the accuracy nature of the detection of further improvement. Furthermore, in above-mentioned testing process, need not to rotate, turn by the survey bearing, once pack into the utility model discloses can accomplish automatic measurement among the measuring instrument, avoid the upset to be surveyed the produced detection error of bearing.
Therefore, use the utility model discloses measuring instrument can be to a certain extent accurate measurement bearing axial displacement under different loads changes, and then the accurate measured bearing axial play parameter that obtains. The utility model has the advantages of being simple in structure and convenient in operation, be suitable for the bearing type: radial bearings such as single-row deep groove ball bearings, double-row deep groove ball bearings and double-row tapered roller bearings are used.
Drawings
Fig. 1 is an overall schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 3 is a schematic side view of an embodiment of the present invention.
Fig. 4 is a schematic top view of an embodiment of the present invention.
Fig. 5 is a schematic bottom view of an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view taken along the direction B in fig. 4.
Fig. 7 is a schematic sectional view taken along the direction A in fig. 4.
Reference numerals: 1-a detection platform, 2-a lower detection tool, 3-an upper detection tool, 4-a mounting platform, 5-a fixed column, 6-a fixed platform, 7-an upper cylinder, 8-a motor, 9-a lead screw, 10-a lower cylinder, 11-an upper position sensor, 12-a lower position sensor, 13-an upper displacement sensor, 14-an upper force application tool, 15-an upper tool seat, 16-a detected bearing, 17-a lower tool seat, 18-a lower displacement sensor, 19-a pre-tightening screw rod, 20-a pre-tightening press block, 21-an upper gasket and 22-a lower gasket;
101-support frame, 301-outer ring edge, 401-linear bearing, 402-first buffer spring, 1001-movable rod, 1301-connecting sleeve, 1302-upper connecting piece, 1303-second buffer spring, 1501-embedded end, 1502-limiting bulge, 1801-lower force application tool, 1802-lower connecting piece and 1901-pre-tightening spring.
Detailed Description
Embodiment 1 this embodiment provides an automatic measurement appearance ware, including central controller, testing platform 1, fixed platform 6, go up and detect frock 3, lower detection frock 2, go up loading mechanism and loading mechanism down, testing platform 1 is fixed in on a support frame 101, and it is horizontal setting. The fixed platform 6 is located above the detection platform 1, and two sides of the fixed platform are respectively fixed on the detection platform 1 through at least one fixed column 5. The middle part of testing platform 1 is equipped with the through-hole that a vertical direction was seted up, and on testing platform 1's upper surface, fixedly connected with lower frock seat 17 can be dismantled to the through-hole. The lower tool seat 17 is a disc with a boss, and the lower detection tool 2 is sleeved on the boss of the lower tool seat 17 and is relatively fixed with the lower tool seat 17. Through lower frock seat 17, but lower detection frock 2 and lower frock seat 17 movable cooperation to be convenient for change.
The lower loading mechanism comprises a lower cylinder 10, a lower displacement sensor 18, a lower position sensor 12 and a lower force application tool 1801, and is installed below the detection platform 1, wherein the lower cylinder 10 is used for driving the lower force application tool 1801 and the lower displacement sensor 18 to move and is used for detecting an axial clearance at a first position of the detected bearing 16. For this, the movable rod of the lower cylinder 10 is disposed toward the sensing platform 1, and may be far from or close to the sensing platform 1. The centers of the lower tool seat 17 and the lower detection tool 2 are both provided with through holes, the two through holes are communicated to form a first through hole, and the lower displacement sensor 18 is coaxially sleeved in the lower force application tool 1801 and is arranged in the first through hole in a penetrating manner. The bottom end of the lower force application tool 1801 is connected to the end of the movable rod 1001 of the lower cylinder 10 through a connecting connection, i.e., the top end of the lower cylinder 10 shown in fig. 6. With the above configuration, the detection direction of the displacement sensor coincides with the moving direction of the lower cylinder 10. The lower position sensor 12 is used for detecting the relative position of the actuator relative to the detection platform 1, and is arranged on the support frame 101 or the lower air cylinder 10, and the detected position data is fed back to the controller for controlling the rotation of the motor 8. The controller can be self-provided for the servo motor 8, and can also be an additionally provided control box.
The upper loading mechanism comprises an upper air cylinder 7, an upper displacement sensor 13, an upper position sensor 11, a driving mechanism and a mounting platform 4, two opposite fixing columns 5 are sleeved on two sides of the mounting platform 4, the mounting platform 4 is connected with the fixing columns 5 through a linear bearing 401, and the linear bearing 401 enables the mounting platform 4 to slide up and down on the fixing columns 5 under the driving of the driving mechanism.
In this embodiment, in order to control the magnitude of the force applied by the upper loading mechanism to clamp and fix the bearing by the load applied by the upper detection tool 3, the driving mechanism adopts a motor 8 and lead screw 9 mechanism, the lead screw 9 is vertically screwed on the mounting platform 4, and the top of the lead screw 9 is coaxially connected with the output shaft of the motor 8. In an embodiment, the motor 8 can adopt a servo motor 8, and the servo motor 8 can autonomously control the rotation of the lead screw 9 according to a preset program, so that the control difficulty is reduced, and the measurement is more convenient.
Go up cylinder 7 fixed mounting on fixed platform 6, its movable rod sets up perpendicularly towards testing platform 1. Corresponding to the axial position of the movable rod, the mounting platform 4 is provided with a vertical through hole, the upper displacement sensor 13 is arranged in the upper force application tool 14 and is coaxial with the upper force application tool 14, and the upper force application tool 14 penetrates through the vertical through hole. The bottom of mounting platform 4, vertical through-hole are adorned outward and are equipped with frock seat 15, go up and connect as an organic wholely through the pretension structure that has certain allowance for movement between frock seat 15's the upper end and mounting platform 4's the body, simultaneously, go up the upper end 1501 of frock seat 15 and pass through first buffer spring 402 and mounting platform 4 clearance fit.
The pre-tightening mechanism comprises a pre-tightening screw 19, a pre-tightening spring 1901 and a pre-tightening pressing block 20, wherein the small end of the pre-tightening screw 19 penetrates through the mounting platform 4 from the upper surface of the mounting platform 4 to be in threaded connection with the upper tool seat 15 below the mounting platform, the pre-tightening spring 1901 is assembled between the large end of the pre-tightening screw 19 and the pre-tightening pressing block 20, and the pre-tightening pressing block 20 is detachably fixed on the mounting platform 4 through bolts.
In this embodiment, the upper detection tool 3 is fixed to the bottom of the upper tool seat 15, in one embodiment, an external thread is arranged on the outer side wall of the bottom of the upper tool seat 15, and the upper detection tool 3 is in threaded sleeve connection with the bottom of the upper tool seat 15.
The middle part of the outer diameter surface of the upper tool seat 15 is convexly provided with a limiting bulge 1502, the upper end surface of the upper part of the upper detection tool 3 is in contact fit with the limiting bulge 1502, and the position of the lower part of the upper tool seat 15 is fixed with the position of the upper part of the upper detection tool 3 in the fit process. The stability of the upper tool seat 15 and the upper detection tool 3 in matching can be ensured, and the detected bearing 16 can be always fixed at the same position, so that the upper air cylinder 7 and the lower air cylinder 10 can control the upper force application tool 14 and the lower force application tool 1801 to apply load to the detected bearing 16.
In the upper loading mechanism, a second buffer spring 1303 is further sleeved between the tail end of the movable rod of the upper air cylinder 7 and the upper force application tool 14: one end of the second buffer spring 1303 is abutted against a stop inside the force application tool, and the other end of the second buffer spring is matched with the tail end of the movable member rod at intervals through a connecting piece between the second buffer spring and the stop. The second buffer spring 1303 plays a role in buffering when the upper force application tool 14 is in contact with the measured bearing 16, so that the measured bearing 16 is prevented from being damaged due to rigid contact.
The upper detection tool 3 and the lower detection tool 2 are used for fixing the outer ring of the bearing, and a measuring head of the displacement sensor is exposed out of the end face of one end, facing the measured bearing 16, of the force application tool for convenient detection.
And the opening edge of the open pore at one side of the upper detection tool 3, the lower detection tool 2, which is contacted with the detected bearing 16, is provided with an inward concave groove for placing a gasket, and the outer diameter of the gasket is larger than the inner diameter of the inner ring of the detected bearing 16, smaller than the inner diameter of the outer ring of the detected bearing 16, and especially smaller than the inner diameter of the adjacent side of the upper detection tool 3, the lower detection tool 2 and the gasket. The measuring heads of the upper displacement sensor 13 and the lower displacement sensor 18 are in contact fit with the gasket. The axial displacement on the measured bearing 16 is integrated and consistent through the gasket, so that the detection is convenient and the detection precision is improved.
The length of the upper tool seat 15 extending into the upper detection tool 3 is smaller than the height of the upper part of the upper detection tool 3, but the upper tool seat and the upper tool seat are matched through the limiting protrusion 1502 and the end face of the upper part of the upper detection tool 3, so that the matching and the fixing of the upper tool seat and the upper tool seat are realized, and the influence of the upper tool seat 15 on the inner ring of the detected bearing 16 can be avoided.
In a preferred embodiment, in order to ensure the precision of the detection structure, the upper detection tool 3, the upper tool seat 15, the lower detection tool 2, the lower tool seat 17, the upper cylinder 7 and the lower cylinder 10 are all installed on the same straight line. The outer diameter surfaces of the lower tool seat 17 and the upper tool seat 15 on the side contacting and matching with the measured bearing 16 are aligned with the outer diameter surface of the measured bearing 16. Therefore, in this embodiment, the upper tool seat 15 and the lower tool seat 17 preferably adopt a sleeve structure, which is simple in structure and convenient to process.
In this embodiment, the motor 8 is preferably a servo motor 8, and the upper cylinder 7 and the lower cylinder 10 are both servo electric cylinders.
The measurement principle of the embodiment is as follows: the outer ring of the tested bearing 16 is fixed in the axial direction, and the movement of the outer ring is avoided. And applying a certain axial repeated load to the bearing inner ring, and calculating the axial displacement change of the bearing inner ring to obtain the total displacement, namely the axial clearance of the measured bearing 16.
The measurement operation steps of the embodiment are as follows:
1. an upper detection tool 3 and a lower detection tool 2 which are suitable for a detected bearing 16 are selected, are respectively installed on an upper tool seat 15 and a lower tool seat 17 and are locked by fasteners such as positioning pins and the like. The upper loading mechanism is driven to move up and down through the operation of the servo motor 8 and the lead screw 9 until the upper detection tool 3 of the upper loading mechanism contacts with the outer ring of the detected bearing 16 to fix the outer ring of the detected bearing 16 on the lower detection tool 2, so that the outer ring is ensured not to have a displacement change position in the axial direction. In order to detect that the load borne by the outer ring meets certain requirements, a pressure sensor for detecting the load borne by the outer ring can be arranged between the upper detection tool 3 and the upper tool seat 15.
2. The lower servo cylinder starts to operate, the lower force application sleeve and the lower displacement sensor 18 are pushed to move upwards until the upper force application sleeve contacts with the upper gasket 21, and the upper displacement sensor 13 starts to record a display value X1. The lower servo cylinder continues to operate until the lower load is loaded to the target value, at which time the upper displacement sensor 13 records an indication of X2。
3. After the displacement acquisition record in the lower side direction is finished, the lower servo electric cylinder reversely rotates to unload and return to an initial state.
4. The upper servo electric cylinder starts to operate to push the upper force application sleeve and the upper displacement sensor 13 to move downwards until the displacement sensor starts to record a display value X when the lower force application sleeve is contacted with the lower gasket 223. The upper servo cylinder continues to operate until the upper load is loaded to the target value, at which time the upper displacement sensor 13 records an indication of X4。
5. After the upper side direction displacement acquisition record is completed, the upper servo electric cylinder reversely rotates to unload, and the initial state is returned.
6. The servo motor 8 and the threaded screw rod are operated to drive the upper loading mechanism to move up and down, and the upper loading mechanism is driven to return to the initial position.
7. Calculating the total displacement:
Δ X = I X1-X2I + I X3-X4I1
The value Δ X is the magnitude of the axial clearance Ga of the bearing.
Example 2 this example differs from example 1 in that: the upper detection tool 3 is stacked on a detected bearing 16 placed on the lower detection tool 2, and an upper tool seat 15 matched with the upper detection tool 3 is arranged on one side, opposite to the lower detection tool 2, of the movable end of an actuator of the upper loading mechanism.
In the above embodiment, the upper position sensor 11 and the lower position sensor 12 are laser distance measuring sensors, and the detection directions of the upper position sensor 11 and the lower position sensor 12 are perpendicular to the movement directions of the upper loading mechanism and the lower loading mechanism, respectively.
Claims (14)
1. An automatic measuring instrument, characterized in that: the device comprises a central controller, a detection platform, an upper detection tool, a lower detection tool, an upper loading mechanism and a lower loading mechanism, wherein the upper detection tool and the lower detection tool are used for fixing the outer ring of a bearing, and the lower detection tool is detachably fixed or placed on a lower tool seat; the upper loading mechanism and the lower loading mechanism are both provided with an actuator and a displacement sensor, the actuator comprises a fixed end and a movable end, the fixed end is fixedly arranged relative to the detection platform, and the movable end can vertically move up and down relative to the detection platform; the displacement sensor is arranged on the side wall of the movable end, which faces to the side where the measured bearing is located;
an upper tool seat is arranged on one side, opposite to the lower detection tool, of the movable end of the actuator of the upper loading mechanism, and the upper detection tool is installed on the upper tool seat; or the upper detection tool is stacked on a detected bearing placed on the lower detection tool, and an upper tool seat matched with the upper detection tool is arranged on one side, opposite to the lower detection tool, of the movable end of the actuator of the upper loading mechanism;
the upper loading mechanism and the lower loading mechanism are both provided with a force application tool, and the force application tools are arranged in parallel with the displacement sensor and are arranged on the tail end of the movable part of the actuator together.
2. The automatic measuring instrument according to claim 1, wherein: and a measuring head of the displacement sensor is exposed out of the end face of one end of the force application tool, which faces the measured bearing.
3. The automatic measuring instrument according to claim 1, wherein: the upper tool seat and the lower tool seat are respectively provided with a hole or a groove through which the force application tool and the displacement sensor can pass; or the upper tool seat and the lower tool seat are both of sleeve structures.
4. The automatic measuring instrument according to any one of claims 1 to 3, wherein: the force application tool is of a sleeve structure, and the force application tool and the movable end of the actuator are detachably and fixedly connected into a whole through another sleeve structure.
5. The automatic measuring instrument according to any one of claims 1 to 3, wherein: the displacement sensor and the force application tool are coaxially arranged.
6. The automatic measuring instrument according to claim 1, wherein: in the upper loading mechanism and/or the lower loading mechanism, a buffer spring is sleeved between the tail end of the moving part of the actuator and the force application tool, one end of the buffer spring is abutted to a stop inside the force application tool, and the other end of the buffer spring is matched with the tail end of the moving part.
7. The automatic measuring instrument according to claim 3, wherein: the middle part of the outer diameter surface of the upper tool seat is convexly provided with a limiting bulge, the upper part of the upper detection tool is sleeved on the lower part of the upper tool seat, and the upper end surface of the upper detection tool is in contact fit with the limiting bulge to enable the lower part of the upper tool seat to be fixed with the upper part of the upper detection tool in the matching position.
8. The automatic measuring instrument according to claim 7, wherein: the upper tool seat is installed on the lower surface of a mounting platform, and another buffer spring is arranged between the top of the upper tool seat and the bottom of the mounting groove of the mounting platform.
9. The automatic measuring instrument according to claim 8, wherein: the mounting platform can be slidably assembled on a support column and driven by a driving mechanism to reciprocate perpendicular to the detection platform.
10. The automatic measuring instrument according to claim 7, wherein: install pretension mechanism between last frock seat and the mounting platform: the pre-tightening mechanism comprises a pre-tightening bolt, a pre-tightening spring and a pre-tightening pressing block, wherein the small end of the pre-tightening bolt penetrates through the mounting platform from the upper surface of the mounting platform to be in threaded connection with the upper tool seat below the mounting platform, the pre-tightening spring is assembled between one end of the large end of the pre-tightening bolt and the pre-tightening pressing block, and the pre-tightening pressing block is detachably fixed on the mounting platform through the bolt.
11. The automatic measuring instrument according to claim 7, wherein: the lower tool seat is a convex seat, and the lower part of the lower detection tool is sleeved on the lower tool seat and is embedded with the upper part of the lower tool seat.
12. The automatic measuring instrument according to claim 7, wherein: the outer diameter surfaces of the side, in contact fit with the measured bearing, of the lower tool seat and the upper tool seat are aligned with the outer diameter surface of the measured bearing; and/or the middle part of the upper detection tool is provided with an outer annular edge.
13. The automatic measuring instrument of claim 6, wherein: the upper loading mechanism and the lower loading mechanism are provided with position sensors for detecting the movement conditions of the upper loading mechanism and the lower loading mechanism, the position sensors are laser ranging sensors, and the detection direction of the position sensors is perpendicular to the movement direction of the upper loading mechanism and the lower loading mechanism.
14. The automatic measuring instrument according to claim 1, wherein: on detect the frock, set the gasket in detecting the frock down, the gasket external diameter is greater than the inner circle internal diameter of the bearing under test, is less than the outer lane internal diameter of the bearing under test, is especially less than the inner bore diameter of detecting the frock, detecting the frock and the adjacent one side of gasket down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021648715.5U CN213455417U (en) | 2020-08-10 | 2020-08-10 | Automatic measuring instrument |
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| CN202021648715.5U CN213455417U (en) | 2020-08-10 | 2020-08-10 | Automatic measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562947A (en) * | 2022-01-26 | 2022-05-31 | 人本股份有限公司 | Maintenance-free hub bearing's negative play check out test set |
| CN115342866A (en) * | 2022-10-18 | 2022-11-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Piezoelectric ceramic actuator detection device and system |
-
2020
- 2020-08-10 CN CN202021648715.5U patent/CN213455417U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562947A (en) * | 2022-01-26 | 2022-05-31 | 人本股份有限公司 | Maintenance-free hub bearing's negative play check out test set |
| CN114562947B (en) * | 2022-01-26 | 2023-10-20 | 人本股份有限公司 | Maintenance-free hub bearing negative clearance detection equipment |
| CN115342866A (en) * | 2022-10-18 | 2022-11-15 | 中国空气动力研究与发展中心高速空气动力研究所 | Piezoelectric ceramic actuator detection device and system |
| CN115342866B (en) * | 2022-10-18 | 2023-01-31 | 中国空气动力研究与发展中心高速空气动力研究所 | Piezoelectric ceramic actuator detection device and system |
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