CN110068300B - Self-adaptive limiting mechanism for transmission shaft of coarseness gauge - Google Patents
Self-adaptive limiting mechanism for transmission shaft of coarseness gauge Download PDFInfo
- Publication number
- CN110068300B CN110068300B CN201910459807.4A CN201910459807A CN110068300B CN 110068300 B CN110068300 B CN 110068300B CN 201910459807 A CN201910459807 A CN 201910459807A CN 110068300 B CN110068300 B CN 110068300B
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- transmission shaft
- resistant
- shaft
- limiting
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 87
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 230000003044 adaptive effect Effects 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention discloses a self-adaptive limiting mechanism of a transmission shaft of a coarseness gauge, which comprises a mounting base, wherein a mounting hole is horizontally penetrated in the mounting base, a wear-resistant shaft sleeve is arranged in the mounting hole, the transmission shaft is slidably arranged in the wear-resistant shaft sleeve, a wear-resistant limiting device is arranged between the wear-resistant shaft sleeve and the mounting base, one end of the wear-resistant limiting device is supported on the peripheral surface of the transmission shaft, and a self-adaptive compressing device is arranged between the other end of the wear-resistant limiting device and the mounting base; the invention can prevent the transmission shaft from directly contacting with the mounting hole, not only solves the problem of loose fit of sliding fit of the transmission shaft and the mounting hole in the prior art, but also solves the problem of lower abrasion under the condition of horizontal mounting in the prior art, and improves the abrasion resistance, measurement accuracy and service life of the invention; and the device has the advantages of simple structure, reasonable design, lower cost, convenient installation and the like, and is favorable for the wide use of the roughness instrument.
Description
Technical Field
The invention relates to the technical field of surface roughness detection, in particular to a self-adaptive limiting mechanism for a transmission shaft of a roughness meter.
Background
The portable roughness meter is a precise special device for detecting microscopic fluctuation of the surface of an object, when the surface of a workpiece is measured, the surface of the workpiece is mainly detected by a manual handheld instrument, a contact pin of a sensor is lapped on the workpiece and vertically contacts with the measured surface of the workpiece during measurement, the sensor is dragged at a certain speed by a transmission mechanism, and the contact pin moves up and down according to the fluctuation of the peak and valley of the profile of the measured surface, so that the roughness condition of the measured surface is detected. The measurement principle requires that the whole transmission mechanism has high stability, and the fixed installation mode of the transmission shaft in the whole transmission mechanism severely restricts the linearity and stability of the whole operation of the equipment. The existing transmission shaft mounting mode mainly comprises two types: one is to adopt the direct sliding fit installation of transmission shaft and mounting hole; the other is to mount the transmission shaft through a linear bearing.
When the transmission shaft and the mounting hole are directly in sliding fit, if the sliding resistance between the transmission shaft and the mounting hole is too large, the overload of the motor can be caused by the excessive load of the driving unit, the voltage surge can be generated in the whole system, and the operation of the transmission shaft is unstable; in order to reduce sliding resistance, the transmission shaft and the mounting hole are required to be mounted too loosely, at this moment, the transmission shaft can shake in motion, after long-term use, the gap between the transmission shaft and the mounting hole can be gradually increased, the transmission shaft mounted horizontally can enable abrasion below to be aggravated under the action of gravity, the whole mounting hole is in an elliptical-like shape, measurement accuracy is reduced, the service life is shortened, and if abrasion parts are replaced, cost is increased intangibly. When the linear bearing is adopted for installation, the whole measurement precision of the instrument is completely dependent on the precision of the linear bearing, and although the high measurement precision can be ensured, the cost of the roughness instrument can be increased due to the overhigh price of the linear bearing, so that the wide use of the roughness instrument is not facilitated.
Disclosure of Invention
In order to solve the technical problems, the invention provides the adaptive limiting mechanism for the transmission shaft of the coarser machine, which has the advantages of simple structure, reasonable design, low cost, good wear resistance and convenience in installation.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a roughness appearance transmission shaft self-adaptation limiting mechanism, includes the mounting base, the level runs through in the mounting base and is equipped with the mounting hole, install the wear-resisting axle sleeve in the mounting hole, sliding mounting has the transmission shaft in the wear-resisting axle sleeve, the wear-resisting axle sleeve with be provided with wear-resisting stop device between the mounting base, wear-resisting stop device's one end supports on the outer peripheral face of transmission shaft, wear-resisting stop device's the other end with install self-adaptation closing device between the mounting base.
As the preferable technical scheme, the wear-resistant shaft sleeve comprises a transmission shaft sleeve which is respectively arranged at two ends of the mounting hole, the transmission shaft is slidably arranged in the two transmission shaft sleeves, and one wear-resistant limiting device is arranged between any one transmission shaft sleeve and the transmission shaft.
As the preferable technical scheme, wear-resisting stop device is including setting up the base side opening on the mounting base, the axis of base side opening with the axis of transmission shaft is perpendicular, be provided with on the wear-resisting axle sleeve with the axle sleeve side opening that the base side opening corresponds, the base side opening with run through in the axle sleeve side opening and be provided with wear-resisting spacing axle, the top of wear-resisting spacing axle is supported on the outer peripheral face of transmission shaft, the bottom of wear-resisting spacing axle with self-adaptation closing device is connected.
As the preferable technical scheme, the self-adaptive compressing device comprises a spring piece which is obliquely arranged, the spring piece is connected to the mounting base through screw threads, a mounting groove is formed in the outer surface of the mounting base, one end of the spring piece is embedded in the mounting groove, and the other end of the spring piece is supported at the bottom end of the wear-resistant limiting shaft and compresses the top end of the wear-resistant limiting shaft on the outer peripheral surface of the transmission shaft.
As an optimal technical scheme, the wear-resistant limiting shaft is a polytetrafluoroethylene shaft; the wear-resistant shaft sleeve is a polytetrafluoroethylene shaft sleeve.
Due to the adoption of the technical scheme, the adaptive limiting mechanism of the transmission shaft of the coarser machine comprises a mounting base, wherein a mounting hole is horizontally penetrated in the mounting base, a wear-resistant shaft sleeve is arranged in the mounting hole, the transmission shaft is slidably arranged in the wear-resistant shaft sleeve, a wear-resistant limiting device is arranged between the wear-resistant shaft sleeve and the mounting base, one end of the wear-resistant limiting device is supported on the outer peripheral surface of the transmission shaft, and an adaptive compressing device is arranged between the other end of the wear-resistant limiting device and the mounting base; the beneficial effects of the invention are as follows:
1. the arrangement of the wear-resistant shaft sleeve can prevent the transmission shaft from directly contacting with the mounting hole, so that the problem of loose fit of sliding fit of the transmission shaft and the mounting hole in the prior art is effectively solved;
2. the self-adaptive pressing device is pressed at the bottom end of the wear-resistant limiting device and pushes the wear-resistant limiting device upwards, so that the top end of the wear-resistant limiting device props up the transmission shaft, at the moment, the bottom end of the transmission shaft is only in contact with the top end of the wear-resistant limiting device, the problem of lower abrasion under the condition of horizontal installation in the prior art is solved, and the wear resistance of the whole device is greatly improved;
3. the wear-resistant shaft sleeve is arranged in the mounting base through the wear-resistant limiting device, so that the problem of difficult mounting of the wear-resistant shaft sleeve is solved, and the wide use of a roughness instrument is facilitated;
4. the wear-resistant limiting device and the wear-resistant shaft sleeve are made of wear-resistant materials, so that even if the wear-resistant limiting device and the wear-resistant shaft sleeve are worn, the wear amount is very small compared with the wear in the prior art, and the service life of the wear-resistant limiting device is prolonged;
5. the self-adaptive pressing device is arranged to enable the wear-resistant limiting device to be always in contact with the transmission shaft, and ensure that the transmission shaft is always supported, so that the operation adjustment process of a user can be effectively reduced, and the device is more convenient to use;
6. the invention also has the advantages of simple structure, reasonable design, lower cost, convenient installation, controllable pressure and the like.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention. Wherein:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the embodiment A-A of the present invention;
in the figure: 1-a mounting base; 2-mounting holes; 3-a transmission shaft; 4-a driving shaft sleeve; 5-a wear-resistant limiting shaft; 6-a spring piece; 7-screws; 8-mounting grooves.
Detailed Description
The invention is further illustrated in the following, in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. It is needless to say that the person skilled in the art realizes that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope.
As shown in fig. 1 and 2, the adaptive limiting mechanism for the transmission shaft of the coarser machine comprises a mounting base 1, a mounting hole 2 is horizontally arranged in the mounting base 1 in a penetrating manner, a wear-resistant shaft sleeve is arranged in the mounting hole 2, a transmission shaft 3 is slidably arranged in the wear-resistant shaft sleeve, a wear-resistant limiting device is arranged between the wear-resistant shaft sleeve and the mounting base 1, one end of the wear-resistant limiting device is supported on the outer peripheral surface of the transmission shaft 3, and an adaptive pressing device is arranged between the other end of the wear-resistant limiting device and the mounting base 1. The mounting base 1, the mounting hole 2 and the transmission shaft 3 are all in the prior art, and the specific structure is not repeated; the arrangement of the wear-resistant shaft sleeve can prevent the transmission shaft 3 from directly contacting the mounting hole 2, so that the problem of tightness of sliding fit between the transmission shaft 3 and the mounting hole 2 in the prior art is effectively solved; the self-adaptive pressing device is pressed at the bottom end of the wear-resistant limiting device and pushes the wear-resistant limiting device upwards, so that the top end of the wear-resistant limiting device props up the transmission shaft 3, at the moment, the bottom end of the transmission shaft 3 is only in contact with the top end of the wear-resistant limiting device, the problem of lower abrasion in the horizontal installation condition in the prior art is solved, and the wear resistance of the whole device is greatly improved; the wear-resistant shaft sleeve is arranged in the mounting base 1 through the wear-resistant limiting device, so that the problem of difficult mounting of the wear-resistant shaft sleeve is solved, and the wide use of a roughness instrument is facilitated; the wear-resistant limiting device and the wear-resistant shaft sleeve are made of wear-resistant materials, so that even if the wear-resistant limiting device and the wear-resistant shaft sleeve are worn, the wear amount is very small compared with the wear in the prior art, and the service life of the wear-resistant limiting device is prolonged; the self-adaptive pressing device is arranged to enable the wear-resistant limiting device to be always in contact with the transmission shaft 3, and ensure that the transmission shaft 3 is always supported, so that the operation adjustment process of a user can be effectively reduced, the device is more convenient to use, and wide popularization and use are facilitated; the invention has the advantages of simple structure, reasonable design, lower cost, convenient installation, controllable pressure and the like.
The wear-resisting shaft sleeve comprises a driving shaft sleeve 4 which is respectively arranged at two ends of the mounting hole 2, the driving shaft 3 is slidably arranged in the driving shaft sleeve 4, and one wear-resisting limiting device is arranged between any driving shaft sleeve 4 and the driving shaft 3.
The wear-resisting stop device is including setting up the base side opening on the mounting base 1, the axis of base side opening with the axis of transmission shaft 3 is perpendicular, be provided with on the wear-resisting axle sleeve with the axle sleeve side opening that the base side opening corresponds, the base side opening with run through in the axle sleeve side opening and be provided with wear-resisting spacing axle 5, the top of wear-resisting spacing axle 5 supports on the outer peripheral face of transmission shaft 3, the bottom of wear-resisting spacing axle 5 with self-adaptation closing device is connected. In this embodiment, the top end of the wear-resistant limiting shaft 5 is configured as a hemispherical structure, and the wear-resistant limiting shaft 5 is in point contact with the transmission shaft 3, so that friction between the wear-resistant limiting shaft 5 and the transmission shaft 3 can be effectively reduced, at this time, the friction between the wear-resistant limiting shaft 5 and the transmission shaft 3 is minimum, after the service time is long, the top end of the wear-resistant limiting shaft 5 is worn, the shape of the top end is changed, the contact area between the wear-resistant limiting shaft 5 and the wear-resistant limiting shaft 5 is increased, and the friction between the wear-resistant limiting shaft 5 and the transmission shaft 3 is increased.
The self-adaptive compression device comprises a spring piece 6 which is obliquely arranged, a threaded hole is formed in the mounting base 1, a screw 7 is installed on the threaded hole in a threaded mode, the spring piece 6 is connected to the mounting base 1 through the screw 7 in a threaded mode, a mounting groove 8 is formed in the outer surface of the mounting base 1, one end of the spring piece 6 is embedded in the mounting groove 8, the end portion of the spring piece 6 is prevented from coming out of the mounting groove 8, the other end of the spring piece 6 is supported at the bottom end of the wear-resisting limiting shaft 5, and the top end of the wear-resisting limiting shaft 5 is compressed on the outer peripheral surface of the transmission shaft 3. The spring piece 6, the screw 7 and the mounting base 1 form a lever structure, and because the screw 7 is located at a position close to the middle of the spring piece 6 and because one end of the spring piece 6 is always limited in the mounting groove 8, when the screw 7 is screwed into the threaded hole more, the other end of the spring piece 6 is forced to have an upward movement trend, and the wear-resisting limiting shaft 5 is pushed to have a constant upward pressure acting on the transmission shaft 3.
The wear-resistant limiting shaft 5 is a polytetrafluoroethylene shaft; the wear-resistant shaft sleeve is a polytetrafluoroethylene shaft sleeve; the wear-resistant limiting shaft 5 and the wear-resistant shaft sleeve are made of polytetrafluoroethylene, and the wear-resistant limiting shaft has the advantages of light weight, good wear resistance, long service life and the like, and can further improve the wear resistance and the service life of the wear-resistant limiting shaft.
The working principle of the invention is as follows:
when the anti-abrasion device is in a use state, the transmission shaft 3 is horizontally arranged, and the anti-abrasion limiting shaft 5 is positioned at the bottom of the mounting base 1 and is vertically arranged; the lever structure formed by the spring piece 6, the screw 7 and the mounting base 1 can enable the wear-resistant limiting shaft 5 to have a constant upward pressure to act on the transmission shaft 3, so that the top end of the wear-resistant limiting shaft 5 is in upward contact with the transmission shaft 3, and simultaneously, the tightness of the two screws 7 is adjusted by screwing in and unscrewing the two screws 7, namely, the deformation degree of the two spring pieces 6 is adjusted, so that the pressure acting on the wear-resistant limiting shaft 5 is greater than the gravity of the transmission shaft 3, at the moment, the top ends of the two wear-resistant limiting shafts 5 can both prop up the transmission shaft 3, meanwhile, the bottom end of the transmission shaft 3 is not in contact with the bottom wall of the transmission shaft 4, and the top end of the transmission shaft 3 is not in contact with the top wall of the transmission shaft 4, so that the device is in an optimal mounting state before use;
therefore, when the transmission shaft 3 moves, friction is only generated between the top end of the wear-resistant limiting shaft 5 and the side wall of the transmission shaft sleeve 4, friction is not generated between the transmission shaft 3 and the mounting hole 2, the problem of loose fit of sliding fit of the transmission shaft 3 and the mounting hole 2 in the prior art is effectively avoided, the problem of lower abrasion in the case of horizontal mounting in the prior art is solved, the wear resistance of the whole device is greatly improved, the measuring precision of the device is improved, the production cost is reduced, and the service life of the mounting hole 2 is effectively prolonged; even if the wear-resistant limiting shaft 5 is slightly worn due to long-term use, the spring piece 6 is elastically deformed to always act on the bottom of the wear-resistant limiting shaft 5 due to elastic pressure of the spring piece 6, the wear-resistant limiting shaft 5 is pushed to move upwards from the bottom to compensate the wear of the wear-resistant limiting shaft 5, so that the position of the transmission shaft 3 is kept unchanged, the self-adaptive adjustment process of the wear-resistant limiting shaft 5 is realized, the operation adjustment process of a user can be effectively reduced, the device is more convenient to use, and the device is more beneficial to wide popularization and use;
and during the installation, wear-resisting spacing axle 5 pass the base side opening with the axle sleeve side opening, at this moment, the position of transfer sleeve 4 by wear-resisting spacing axle 5 restriction location, can't take place axial and circumference's change, axle sleeve side opening design makes transfer sleeve 4 self installation need not to use the jackscrew, has effectively prevented self compressive deformation and has excessively loosened and take off, simple structure, simple to operate, works as transfer sleeve 4 should form wearing and tearing when needing to change, will wear-resisting spacing axle 5 demolish can with transfer sleeve 4 comes down, and the dismantlement process is also more convenient.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a roughness appearance transmission shaft self-adaptation limiting mechanism, includes the mounting base, the level runs through in the mounting base and is equipped with the mounting hole, its characterized in that: the installation hole is internally provided with a wear-resistant shaft sleeve, a transmission shaft is slidably installed in the wear-resistant shaft sleeve, a wear-resistant limiting device is arranged between the wear-resistant shaft sleeve and the installation base, one end of the wear-resistant limiting device is supported on the outer peripheral surface of the transmission shaft, and a self-adaptive pressing device is installed between the other end of the wear-resistant limiting device and the installation base;
the wear-resisting limiting device comprises a base side hole arranged on the mounting base, the axis of the base side hole is perpendicular to the axis of the transmission shaft, a shaft sleeve side hole corresponding to the base side hole is arranged on the wear-resisting shaft sleeve, a wear-resisting limiting shaft penetrates through the base side hole and the shaft sleeve side hole, the top end of the wear-resisting limiting shaft is supported on the peripheral surface of the transmission shaft, and the bottom end of the wear-resisting limiting shaft is connected with the self-adaptive compressing device;
the self-adaptive compression device comprises a spring piece which is obliquely arranged, the spring piece is connected to the mounting base through screw threads, a mounting groove is formed in the outer surface of the mounting base, one end of the spring piece is embedded in the mounting groove, and the other end of the spring piece is supported at the bottom end of the wear-resistant limiting shaft and compresses the top end of the wear-resistant limiting shaft on the peripheral surface of the transmission shaft.
2. The coarseness gauge drive shaft adaptive limit mechanism as in claim 1, wherein: the wear-resisting shaft sleeve comprises a transmission shaft sleeve which is respectively arranged at two ends of the mounting hole, the transmission shaft is slidably arranged in the two transmission shaft sleeves, and one wear-resisting limiting device is arranged between any one transmission shaft sleeve and the transmission shaft.
3. The coarseness gauge drive shaft adaptive limiting mechanism as in claim 1 or 2, wherein: the wear-resistant limiting shaft is a polytetrafluoroethylene shaft; the wear-resistant shaft sleeve is a polytetrafluoroethylene shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459807.4A CN110068300B (en) | 2019-05-30 | 2019-05-30 | Self-adaptive limiting mechanism for transmission shaft of coarseness gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459807.4A CN110068300B (en) | 2019-05-30 | 2019-05-30 | Self-adaptive limiting mechanism for transmission shaft of coarseness gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110068300A CN110068300A (en) | 2019-07-30 |
| CN110068300B true CN110068300B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910459807.4A Active CN110068300B (en) | 2019-05-30 | 2019-05-30 | Self-adaptive limiting mechanism for transmission shaft of coarseness gauge |
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| Country | Link |
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| CN (1) | CN110068300B (en) |
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| CN110068300A (en) | 2019-07-30 |
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