CN117405547A - Bearing bush inner surface abrasion loss measuring method and indentation applying device - Google Patents
Bearing bush inner surface abrasion loss measuring method and indentation applying device Download PDFInfo
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- CN117405547A CN117405547A CN202311715989.XA CN202311715989A CN117405547A CN 117405547 A CN117405547 A CN 117405547A CN 202311715989 A CN202311715989 A CN 202311715989A CN 117405547 A CN117405547 A CN 117405547A
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- 238000007373 indentation Methods 0.000 title claims abstract description 77
- 238000005299 abrasion Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The technical scheme of the invention provides a method for measuring the abrasion loss of the inner surface of a bearing bush and an indentation applying device, wherein the method for measuring the abrasion loss of the inner surface of the bearing bush comprises the following steps: s1, cleaning a lining, and cleaning sundries after airing; s2, positioning a bushing to be tested; s3, impressing the front end of the pressure head with an included angle perpendicular to the inner wall of the bushing, and then unlocking the positioning of the bushing to be tested; s4, repositioning the lining with the indentation applied with the corresponding inclination angle matched with the included angle of the pressure head, and performing optical scanning to obtain a complete contour line of the indentation part before abrasion. The invention provides a method for measuring the abrasion loss of the inner surface of the bushing with high precision and no damage by limiting the geometric shape of the indentation and the placement angle of the measured piece, overcomes the size and structure limitation of the measured piece, can realize the high-precision contour line measurement of the inner surface, further obtains the abrasion loss of the inner surface of the bushing, and fills the blank of measuring the abrasion loss of the inner surface of the bushing with small size.
Description
Technical Field
The invention relates to the technical field of bearing bush abrasion measurement, in particular to a method for measuring the abrasion loss of the inner surface of a bearing bush and an indentation applying device.
Background
The bearing is the most main kinematic pair in the engine, and according to engineering practice, faults caused by bearing abrasion occupy more than 40% of total faults of the engine, and research on friction abrasion is significant in improving materials, designs and technologies, improving equipment performance, prolonging mechanical life and guaranteeing engine safety.
The prior measuring method for the bearing wear by utilizing the contour line has less research and is mainly focused on the cutter wear measurement. While there has been no study on accurate measurement of the amount of wear on the inner surface of the liner. Although there are various wear amount measurement techniques among various general-purpose machine parts, such as weighing method, length measuring method, profilometer method, noncontact measurement method, radioisotope method, and collection and analysis of wear debris method. However, the size of a part of the bushing is small, and the bushing is limited by the structural characteristics of the inner surface and the high-precision measurement requirement when the abrasion loss is small, and the current various measurement methods cannot meet the requirement of the bushing abrasion test.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a method for measuring the wear amount of the inner surface of a bearing bush and an indentation applying device, which solve the technical problems that in the prior art, part of the bearing bush has small size and is subject to the structural characteristics of the inner surface and the high-precision measurement requirement when the wear amount is small, and the current various measurement methods cannot meet the requirement of the wear test of the bearing bush.
In order to achieve the technical purpose, the technical scheme of the invention provides a method for measuring the abrasion loss of the inner surface of a bearing bush, which comprises the following steps:
s1, cleaning a lining, and cleaning sundries after airing;
s2, positioning a bushing to be tested;
s3, impressing the front end of the pressure head with an included angle perpendicular to the inner wall of the bushing, and then unlocking the positioning of the bushing to be tested;
s4, repositioning the lining with the indentation applied with the corresponding inclination angle matched with the included angle of the pressure head, and performing optical scanning to obtain a complete contour line of the indentation part before abrasion;
s5, after the lining completes the abrasion test, repeating the step S1 and the step S4 to obtain a contour line of an indentation after abrasion;
and S6, after the contour lines at the indentation positions before and after abrasion are completed, the bottoms of the two contour lines are overlapped to obtain a difference value of the top contour line, namely the abrasion loss of the bushing.
Further, in S3, the front end included angle of the ram is 136 °;
in S4, the inclination of the bushing is 45 °.
The present invention also provides an indentation application device for applying indentations in any of the above measurement methods, comprising:
the indentation part comprises a transverse moving driving piece, a limiting piece and a pressing head, wherein the transverse moving driving piece is used for driving the pressing head to transversely move, and the limiting piece is used for limiting the transverse movement of the pressing head;
the loading part is used for driving the bushing to be tested to be in contact with the pressure head and form an indentation; a kind of electronic device with high-pressure air-conditioning system
And the load measuring part is used for providing integral support and obtaining the force of the pressure head on the inner surface of the bushing to be measured according to the transmitted force when the pressure head is downward contacted with the bushing to be measured.
Further, the sideslip driving piece includes horizontal pole and axial spacing, the spout has been seted up to the bottom of axial spacing, the horizontal pole with spout sliding connection, wherein, pressure head fixed connection is in the bottom of horizontal pole.
Further, the limiting piece comprises a supporting sliding block and a limiting bolt, a clamping groove is formed in the front face of the supporting sliding block, the limiting bolt is in threaded connection with the supporting sliding block and penetrates downwards to the inner side of the clamping groove, and the cross rod is in sliding connection with the inner side of the clamping groove.
Further, the loading portion comprises a ball linear slide rail, a loading slide block, a cushion block and a hydraulic jack, wherein the loading slide block is slidably connected to the ball linear slide rail, the cushion block is arranged at the top of the loading slide block, the telescopic end of the hydraulic jack is connected with the bottom of the loading slide block, and the cushion block is located under the pressure head, and the supporting slide block is slidably connected to the ball linear slide rail.
Further, the load measuring part comprises a supporting component and a load measuring component, wherein the supporting component is used for supporting the loading part and the indentation part, and the load measuring component is used for detecting the force exerted by the pressure head on the inner surface of the bushing to be measured.
Further, the supporting component comprises a base, a supporting rod, a supporting side plate and a supporting cover plate, wherein the supporting rod and the two ends of the supporting side plate are respectively fixedly connected with the base and the supporting cover plate, and the ball linear sliding rail is fixedly installed on the supporting side plate.
Further, the load measuring assembly comprises a load sensor, wherein the load sensor is arranged at the bottom of the supporting cover plate, and the axial limiting frame is arranged at the bottom end of the load sensor.
Further, the axial limiting frame and the supporting sliding block are both U-shaped, and the axial limiting frame is located at the inner side of the supporting sliding block.
Compared with the prior art, the invention has the beneficial effects that:
(1) By limiting the measurement scheme of the indentation geometric shape and the placement angle of the measured piece, the method for measuring the abrasion loss of the inner surface of the bushing with high precision and without damage is provided, the size and structure limitation of the measured piece are overcome, the high-precision contour line measurement of the inner surface can be realized, the abrasion loss of the inner surface of the bushing is further obtained, and the gap of the measurement of the abrasion loss of the inner surface of the bushing with small size is filled.
(2) The inner surface indentation applying device proposed for the measurement of the wear of the inner surface of a bushing can be used for indentation of various bushings or bushes, especially small-sized bushings.
Drawings
FIG. 1 is a schematic illustration of a method for measuring the wear of the inner surface of a bearing shell according to an embodiment of the present invention;
FIG. 2 is an enlarged partial view of portion A of FIG. 1 in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the wear amount acquisition of the method for measuring the wear amount of the inner surface of the bearing shell according to the embodiment of the invention;
FIG. 4 is a three-dimensional block diagram of an indentation application device according to an embodiment of the present invention;
FIG. 5 is a partial three-dimensional view of an indentation application device according to an embodiment of the present invention;
in the figure: 1. an indentation portion; 11. a traversing driving member; 111. a cross bar; 112. an axial limit frame; 1121. a chute; 12. a limiting piece; 121. a support slider; 122. a limit bolt; 1211. a clamping groove; 13. a pressure head;
2. a loading unit; 21. a ball linear slide rail; 22. loading a sliding block; 23. a cushion block; 24. a hydraulic jack;
3. a load measuring unit; 31. a support assembly; 311. a base; 312. a support rod; 313. supporting the side plates; 314. supporting the cover plate; 32. a load measurement assembly; 321. a load sensor;
4. a bushing.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
As shown in fig. 1-3, the invention provides a method and a device for measuring the abrasion loss of the inner surface of a bearing bush, which comprises the following steps:
s1, cleaning a lining, cleaning impurities after airing, cleaning the lining by an ultrasonic cleaner, and cleaning the impurities possibly existing on the surface of the lining by a balloon after airing;
s2, positioning a bushing to be tested;
s3, an indentation is applied to the inner wall of the lining by a pressure head with an included angle at the front end, the pressure head is firstly inserted into the inner side of the lining and is vertical to the inner wall of the lining to be tested, then the pressure head is controlled to press down, so that an indentation is formed on the inner wall of the lining to be tested, the indentation can be seen in the figure 2, the shape of the indentation corresponds to the shape of the pressure head, the shape of the indentation is controllable, and after the indentation is formed, the positioning of the lining to be tested is released;
s4, repositioning the lining with the indentation applied to a corresponding inclination angle matched with the included angle of the indentation, performing optical scanning, and scanning a contour line to obtain a complete contour line of the indentation part before abrasion, wherein the surface of the lining can be scanned by a super-field-depth microscope to obtain the complete contour of the indentation part before abrasion;
s5, after the lining completes the abrasion test, repeating the step S1 and the step S4 to obtain a contour line of an indentation after abrasion;
s6, after the contour lines of the indentation positions before and after abrasion are completed, the bottoms of the two contour lines are overlapped to obtain a difference value of the top contour line, namely the abrasion loss of the bushing, and specifically referring to FIG. 3, the difference value is h.
Further, in step S3, the front end included angle of the pressing head is 136 °; in step S4, the sleeve is placed at an inclination of 45 °. The bushing is different from a common bearing bush and can be divided into an upper part and a lower part, so that the bushing can be kept at a 45-degree inclined angle through a tool, and the used pressure head is an HV6 pressure head, the front end included angle of the used pressure head is 136 degrees, and a visual field blind area can not appear when the bushing is inclined at 45 degrees for optical scanning, so that the surface of the bushing can be scanned through a super-depth-of-field microscope to obtain the complete contour line of an indentation part before abrasion.
It can be understood that aiming at the requirement that the bushing structure is small and cannot be damaged, the invention provides a measuring scheme for processing the indentation on the surface to be measured and limiting the geometric shape of the indentation and the placement angle of the measured piece at the same time, thereby realizing a method for measuring the nondestructive contour line of the inner surface of the bushing and further obtaining high-precision abrasion loss.
The invention also provides an indentation applying device, referring to fig. 4-5, which is used for applying the indentation in any measuring method, and can extend into an inner hole to apply the indentation, and comprises an indentation part 1, a loading part 2 and a load measuring part 3, wherein the indentation part 1 comprises a traversing driving piece 11, a limiting piece 12 and an indentation 13, the traversing driving piece 11 is used for driving the indentation 13 to transversely move, the limiting piece 12 is used for limiting the transverse movement of the indentation 13, in use, the indentation part 1 is mainly used for applying the indentation in a bushing, the traversing driving piece 11 is used for adjusting the position of the indentation 13 in the horizontal direction, and the limiting piece 12 is used for locking after the indentation part is adjusted to the corresponding position; the loading part 2 is used for driving the tested bush to contact with the pressing head 13 and form an indentation, the main driving direction is to push the tested bush upwards to move, the position of the pressing head 13 is fixed, the inner surface of the bush contacts with the pressing head 13 and continuously presses upwards, and thus the indentation is applied by the pressing head 13; the load measuring part 3 is used for providing integral support, and when the pressure head 13 is in contact with the lining to be measured, the force of the pressure head 13 on the inner surface of the lining to be measured is obtained according to the transmitted force.
It will be appreciated that the ram 13 is capable of being adjusted to the inside of the bush in a laterally movable manner, the position of which is defined relative to the bush, when the indentation is applied, the ram 13 is not driven to move, but the ram 13 is brought into contact with the inner surface of the bush in such a way as to drive the bush to move, and the indentation is applied; the pressing head 13 adopts a diamond pressing head, the model of which can be HV6 pressing head, and the front end included angle of which is 136 degrees.
In this embodiment, specifically, the lateral movement driving member 11 includes a cross rod 111 and an axial limiting frame 112, a sliding slot 1121 is provided at the bottom of the axial limiting frame 112, the cross rod 111 is slidably connected with the sliding slot 1121, the sliding slot 1121 is penetrated left and right, the cross rod 111 penetrates through the sliding slot 1121 from left to right, the main function of the sliding slot 1121 is to guide the cross rod 111 to perform adjustment of lateral movement, and limit the cross rod 111 to move upwards, where the pressure head 13 is fixedly connected to the bottom of the cross rod 111.
Further, the limiting member 12 includes a supporting slider 121 and a limiting bolt 122, the front surface of the supporting slider 121 is provided with a clamping groove 1211, the limiting bolt 122 is in threaded connection with the supporting slider 121 and penetrates downwards to the inner side of the clamping groove 1211, the cross rod 111 is slidably connected to the inner side of the clamping groove 1211, and the cross rod 111 can be locked by screwing the downwards penetrating limiting bolt 122 downwards, so that the purpose of limiting the lateral movement of the cross rod 111 is achieved.
The axial limiting frame 112 and the supporting slider 121 are both U-shaped, the axial limiting frame 112 is located at the inner side of the supporting slider 121, the supporting slider 121 is in a transverse U-shape, the opening of the U-shape faces the front, the clamping grooves 1211 are formed at two ends of the supporting slider 121, the corresponding limiting bolts 122 are two and are respectively in threaded connection with two ends of the supporting slider 121, in addition, the axial limiting frame 112 is in an inverted U-shape, the opening of the U-shape faces downward, a space capable of accommodating the bushing is formed, the sliding grooves 1121 are also formed at two ends of the axial limiting frame 112, one cross rod 111 penetrates through the sliding grooves 1121 at the left side and the right side, and two ends of the cross rod 111 are respectively reinserted into the clamping grooves 1211 at the two sides of the left side and the right side.
It will be appreciated that the transverse movement of the cross bar 111 connected to the ram 13 is limited by the limit bolts 122, thereby ensuring that the ram 13 is pressed into the different bushings at a vertical angle.
In this embodiment, the loading portion 2 includes a ball linear slide 21, a loading slide 22, a cushion block 23 and a hydraulic jack 24, where the loading slide 22 is slidably connected to the ball linear slide 21, the ball linear slide 21 is two vertically arranged, the loading slide 22 is slidably connected to the two ball linear slides 21, so that the loading slide is lifted more stably, the cushion block 23 is disposed at the top of the loading slide 22, and the telescopic end of the hydraulic jack 24 is connected to the bottom of the loading slide 22, and the cushion block 23 is located under the ram 13, and the top of the cushion block 23 is used for placing a bushing.
It will be appreciated that by pressing the handle of the hydraulic jack 24 up and down, the pad 23 is moved up under the constraint of the loading slider 22 and the ball linear rail 21, and the ram 13 is brought into contact with the bush 4 under test.
In this embodiment, the load measuring part 3 includes a supporting component 31 and a load measuring component 32, the supporting component 31 is used for supporting the loading part 2 and the indentation part 1, and the load measuring component 32 is used for detecting the force applied by the pressure head 13 to the inner surface of the liner to be measured.
Specifically, the supporting assembly 31 includes a base 311, a supporting rod 312, a supporting side plate 313 and a supporting cover plate 314, the supporting rod 312 and two ends of the supporting side plate 313 are respectively fixedly connected with the base 311 and the supporting cover plate 314, wherein the supporting side plate 313 and the supporting rod 312 are respectively located at the front side and the rear side, the number of the supporting rods 312 is two, and the supporting rods 312, the supporting side plate 313 and the supporting cover plate 314 are symmetrically distributed left and right, so that the base 311, the supporting rod 312, the supporting side plate 313 and the supporting cover plate 314 form a stable installation frame, and the ball linear sliding rail 21 is fixedly installed on the supporting side plate 313.
Further, the load measuring assembly 32 includes a load sensor 321, the load sensor 321 is disposed at the bottom of the support cover 314, and the axial limiting frame 112 is disposed at the bottom end of the load sensor 321. In use, the load cell 321 obtains the force of the ram 13 against the inner surface of the bushing by measuring the force transmitted by the axial stop 112.
It will be appreciated that the support assembly 31 provides integral support to the device, while the load measuring assembly 32 is used to measure the load applied to the indentation.
The specific working procedure of the invention is as follows:
1) Cleaning the surface of the tested part: cleaning the lining by an ultrasonic cleaner, and removing impurities possibly existing on the surface by blowing a balloon after airing;
2) Installing a bushing to be tested: unscrewing the limit bolt 122, taking down the cross rod 111, inserting the cross rod 111 into the bushing to be tested, mounting the cross rod 111 in the clamping groove 1211 of the support slider 121 and fixing the limit bolt 122;
3) The trace of the applied pressure: adjusting the bushing to an ideal position, driving a rocker arm of the hydraulic jack 24 up and down to enable the loading slide block 22 to move upwards, unloading the hydraulic jack 24 when the load displayed by the load sensor 321 reaches a target load, and taking down the bushing;
4) Measurement of indentations of the inner surface: the bushing is different from a common bearing bush and can be divided into an upper part and a lower part, so that the bushing can be kept at a 45-degree inclined angle through a tool, and the used pressure head 13 is an HV6 pressure head, the front end included angle is 136 degrees, and a visual field blind area can not appear when the bushing is inclined at 45 degrees for optical scanning, so that the surface of the bushing can be scanned through a super-depth-of-field microscope to obtain the complete contour line of an indentation part before abrasion;
5) Indentation measurement after abrasion: after the lining completes the abrasion test, cleaning the surface of the lining again through an ultrasonic cleaner and an air blowing ball, and repeating the step 4) to obtain the contour line of the indentation after abrasion;
6) Calculation of the wear amount: and after finishing the contour lines at the indentation positions before and after abrasion, overlapping the bottoms of the two contour lines to obtain a difference h of the top contour line, namely the abrasion loss of the bushing.
The entire workflow is completed and what is not described in detail in this specification is well known to those skilled in the art.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The method for measuring the wear amount of the inner surface of the bearing bush is characterized by comprising the following steps:
s1, cleaning a lining, and cleaning sundries after airing;
s2, positioning a bushing to be tested;
s3, impressing the front end of the pressure head with an included angle perpendicular to the inner wall of the bushing, and then unlocking the positioning of the bushing to be tested;
s4, repositioning the lining with the indentation applied with the corresponding inclination angle matched with the included angle of the pressure head, and performing optical scanning to obtain a complete contour line of the indentation part before abrasion;
s5, after the lining completes the abrasion test, repeating the step S1 and the step S4 to obtain a contour line of an indentation after abrasion;
and S6, after the contour lines at the indentation positions before and after abrasion are completed, the bottoms of the two contour lines are overlapped to obtain a difference value of the top contour line, namely the abrasion loss of the bushing.
2. The method for measuring the wear amount of the inner surface of a bearing bush according to claim 1, wherein,
s3, the front end included angle of the pressure head is 136 degrees;
in S4, the inclination of the bushing is 45 °.
3. An indentation application device for applying an indentation in the bearing inner surface wear amount measuring method according to any one of claims 1 to 2, comprising:
the indentation part comprises a transverse moving driving piece, a limiting piece and a pressing head, wherein the transverse moving driving piece is used for driving the pressing head to transversely move, and the limiting piece is used for limiting the transverse movement of the pressing head;
the loading part is used for driving the bushing to be tested to be in contact with the pressure head and form an indentation; a kind of electronic device with high-pressure air-conditioning system
And the load measuring part is used for providing integral support and obtaining the force of the pressure head on the inner surface of the bushing to be measured according to the transmitted force when the pressure head is downward contacted with the bushing to be measured.
4. The indentation imparting mechanism as claimed in claim 3, wherein the traverse actuator comprises a cross bar and an axial stop, a chute is provided in a bottom of the axial stop, the cross bar is slidably coupled to the chute, and wherein the indenter is fixedly coupled to a bottom of the cross bar.
5. The indentation applying device as claimed in claim 4, wherein the limiting member comprises a supporting slider and a limiting bolt, the front surface of the supporting slider is provided with a clamping groove, the limiting bolt is in threaded connection with the supporting slider and penetrates downwards to the inner side of the clamping groove, and the cross rod is in sliding connection with the inner side of the clamping groove.
6. The indentation applying apparatus as claimed in claim 5, wherein the loading section comprises a ball linear slide, a loading slider, a pad and a hydraulic jack, the loading slider is slidably connected to the ball linear slide, the pad is disposed on a top of the loading slider, a telescopic end of the hydraulic jack is connected to a bottom of the loading slider, and the pad is located directly under the ram, wherein the supporting slider is slidably connected to the ball linear slide.
7. The indentation application device of claim 6 wherein the load measurement section comprises a support assembly for the loading section and support of the indentation section and a load measurement assembly for detecting a force applied by the indenter against an inner surface of the liner being tested.
8. The indentation applying device as claimed in claim 7, wherein the supporting assembly comprises a base, a supporting rod, a supporting side plate and a supporting cover plate, both ends of the supporting rod and the supporting side plate are fixedly connected with the base and the supporting cover plate, respectively, and the ball linear slide is fixedly installed on the supporting side plate.
9. The indentation application device of claim 8 wherein the load measurement assembly comprises a load sensor disposed at a bottom of the support deck and the axial stop is disposed at a bottom end of the load sensor.
10. The indentation application device of claim 9 wherein the axial stop and the support slide are each U-shaped in shape and the axial stop is located inside the support slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311715989.XA CN117405547B (en) | 2023-12-14 | 2023-12-14 | Indentation applying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311715989.XA CN117405547B (en) | 2023-12-14 | 2023-12-14 | Indentation applying device |
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| CN117405547A true CN117405547A (en) | 2024-01-16 |
| CN117405547B CN117405547B (en) | 2024-03-15 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB650407A (en) * | 1948-06-22 | 1951-02-21 | H W Wallace & Company Ltd | Improvements in apparatus for measuring the hardness of materials |
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