CN110926302A - Shaft diameter adjustable three-spring pressure sensing mechanical centering device and method - Google Patents
Shaft diameter adjustable three-spring pressure sensing mechanical centering device and method Download PDFInfo
- Publication number
- CN110926302A CN110926302A CN201911285054.6A CN201911285054A CN110926302A CN 110926302 A CN110926302 A CN 110926302A CN 201911285054 A CN201911285054 A CN 201911285054A CN 110926302 A CN110926302 A CN 110926302A
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- pressure
- spring
- sleeve
- centering device
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Classifications
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
Abstract
The invention relates to the field of hole-shaft centering devices, and particularly discloses a mechanical centering device and method for a three-spring pressure sensing machine with adjustable shaft diameter, wherein the mechanical centering device comprises a base, a clamping mechanism is arranged in the middle of the base, and at least three pressure detection mechanisms are uniformly distributed on the periphery of the base; the pressure detection mechanism comprises a fixed sleeve, the fixed sleeve is fixed on the base, a spring is arranged in the fixed sleeve, the other end of the spring is provided with a sleeve, and a pressure sensor is arranged on one end face, far away from the spring, of the sleeve. The centering device has the advantages of simple structure, simple operation and strong applicability, and can be suitable for the concentric positioning of hole shafts with different apertures.
Description
Technical Field
The invention relates to the field of hole-shaft centering devices, in particular to a shaft diameter adjustable type three-spring pressure sensing mechanical centering device and method.
Background
In the industry, the hole axle cooperation is very common cooperation relation, often need fix a position hole and axle when carrying out hole and axle cooperation, and the location just needs to adopt special instrument to fix a position, fixes a position the position in hole earlier to the position of axle is confirmed, and the structure of the device that has now to carry out hole axle location is complicated, and the suitability is poor, and operates inconveniently, is difficult to deal with various complicated environment, and is higher to the requirement of using.
Disclosure of Invention
The invention aims to overcome the defects of complex structure and complex operation of a centering device in the prior art, and provides a shaft diameter adjustable three-spring pressure sensing mechanical centering device and a method.
The purpose of the invention is realized by the following technical scheme: a shaft diameter adjustable three-spring pressure sensing mechanical centering device comprises a base, wherein a clamping mechanism is arranged in the middle of the base, and at least three pressure detection mechanisms are uniformly distributed around the base;
the pressure detection mechanism comprises a fixed sleeve, the fixed sleeve is fixed on the base, a spring is arranged in the fixed sleeve, the other end of the spring is provided with a sleeve, and a pressure sensor is arranged on one end face, far away from the spring, of the sleeve.
Specifically, the clamping mechanism is a three-jaw chuck, the three-jaw chuck is fixed on the base through a bolt, and the centering device is clamped on the spindle through the three-jaw chuck.
Specifically, the base be annular base, its middle part is the annular cavity, clamping mechanism sets up in the cavity of annular base, and with the coaxial setting of annular base.
Specifically, the fixed sleeve is fixed on the outer side of the base through a bolt, and the spring is fixed in an inner cavity of the fixed sleeve.
Specifically, the outside of fixed cover is provided with the draw-in groove, telescopic outside be provided with draw-in groove complex buckle for shrink spring.
Specifically, the end of the fixing sleeve is axially provided with a sliding rod, the end of the sleeve is axially provided with a blind hole, and the sliding rod is arranged in the blind hole in a sliding fit manner.
Specifically, the pressure sensor comprises a pressure-strain converter, a plurality of elastic sensing elements are arranged on the end face of the pressure-strain converter, the elastic sensing elements are uniformly distributed on the periphery of the end face of the pressure-strain converter, and the pressure sensor further comprises a pressure transmission device, and the pressure transmission device is arranged on the sleeve and used for outputting pressure signals.
A method for centering by using a shaft diameter adjustable three-spring pressure sensing mechanical centering device comprises the following steps,
the centering device is arranged on the main shaft through the clamping mechanism, then the main shaft and the centering device are placed in a hole needing centering, a buckle structure between the sleeve and the fixed sleeve is opened, the spring is extended, and the elastic sensitive elements on the three pressure sensors are contacted with the inner wall of the hole due to the extension of the spring; signals of the three pressure sensors are respectively transmitted to a data processing module through a pressure transmission device for processing, and pressure reading is carried out on a display after processing; the position of the main shaft is adjusted according to the pressure readings of the three pressure sensors, and the readings of the three pressure sensors are compared during adjustment, so that the readings of the three pressure sensors are within an error range, namely, the hole is coaxial with the main shaft.
The invention has the following advantages:
1. the centering device is simple in structure and convenient to use, can determine that the hole axes are concentric only by adjusting the readings of the three sensors to be within an error range, and is suitable for workshops of any technical level.
2. The extensive applicability of product, applicable in the through-hole or the blind hole centering in different apertures, also can be applicable to the main shaft of different footpaths, can be in the same workshop different station sharing, and the spring that sets up is scalable, and the compression degree of spring is different in the aperture of difference, and the pressure that pressure sensor detected is also different, but only need confirm that three pressure sensor's reading is the same just can judge the hole axle concentric.
3. The product has simple structure, is portable and easy to carry, and is suitable for centering on different occasions.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a pressure sensor according to the present invention;
FIG. 3 is a structural diagram illustrating a use state of the present invention;
in the figure: the method comprises the following steps of 1-a clamping mechanism, 2-a base, 3-a fixing sleeve, 4-a spring, 5-a sleeve, 6-a pressure sensor, 7-a sliding rod, 8-a clamping groove, 9-a buckle, 10-a pressure transmission device, 11-an elastic sensitive element, 12-a main shaft, 13-a hole, 14-a pressure detection mechanism and 15-a pressure strain converter.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, the shaft diameter adjustable three-spring pressure sensing mechanical centering device comprises a base 2, wherein a clamping mechanism 1 is arranged in the middle of the base 2, and at least three pressure detection mechanisms 14 are uniformly distributed around the base 2; the present embodiment preferably has three pressure detecting mechanisms 14.
The pressure detection mechanism 14 comprises a fixed sleeve 3, the fixed sleeve 3 is fixed on the base 2, a spring 4 is arranged in the fixed sleeve 3, a sleeve 5 is arranged at the other end of the spring 4, a pressure sensor 6 is arranged on one end face, far away from the spring 4, of the sleeve 5, when the pressure detection mechanism is used, the centering device is installed on a main shaft 12 through a clamping mechanism 1, then the main shaft 12 and the centering device are placed in a hole 13 needing centering, a buckle structure between the sleeve 5 and the fixed sleeve 3 is opened, the spring 4 is extended, and the spring 4 is extended to enable elastic sensitive elements 11 on the three pressure sensors 6 to be in contact with the inner wall of the hole 13; signals of the three pressure sensors 6 are respectively transmitted to a data processing module through a pressure transmission device 10 for processing, and pressure reading is carried out on a display after processing; the position of the main shaft 12 is adjusted according to the pressure readings of the three pressure sensors 6, the reading values of the three pressure sensors 6 are compared during adjustment, the reading values of the three pressure sensors 6 are in an error range, namely, the hole 13 is coaxial with the main shaft 12, the position information of the main shaft 12 is converted into digital information by the pressure sensors 6, and the adjustment process can be displayed by the change of the pressure sensing readings, so that the centering process is simplified; after the position of the hole 13 is determined, the centering device is taken down, and then a shaft which needs to be matched with the hole is clamped, so that the concentric matching installation of the hole shaft can be realized.
Furthermore, clamping mechanism 1 be the three-jaw chuck, the three-jaw chuck passes through the bolt fastening on base 2, and centering device passes through the three-jaw chuck clamping on main shaft 12, and the clamping mechanism of this embodiment adopts the three-jaw chuck, the simple structure of three-jaw chuck, and very common clamping mechanism, its clamp is tight stable.
Further, the base 2 is an annular base, the middle part of the base is an annular cavity, and the clamping mechanism 1 is arranged in the cavity of the annular base and coaxially arranged with the annular base.
Further, the fixed sleeve 3 is fixed on the outer side of the base 2 through a bolt, and the spring 4 is fixed in the inner cavity of the fixed sleeve 3.
Furthermore, a clamping groove 8 is formed in the outer side of the fixed sleeve 3, a buckle 9 matched with the clamping groove 8 is arranged on the outer side of the sleeve 5 and used for contracting the spring 4, the buckle 9 is arranged to connect the fixed sleeve 3 and the sleeve 5 through the buckle when the centering device is not used, the spring is compressed between the fixed sleeve 3 and the sleeve 5, and the spring 4 is placed, so that the performance parameters of the spring are changed due to long-time free extension, and the measurement accuracy is influenced; meanwhile, the centering device is conveniently placed into the hole 13 needing centering, if the centering device with the spring 4 in an extending state is placed into the hole 13, the circumferential diameter of the centering device is larger than that of the hole 13 needing centering, the centering device is placed into the hole 13 inconveniently, the three pressure detection mechanisms 14 need to be contracted to be placed into the hole 13 lightly, the buckle 9 is opened in the hole 13, and the spring 4 can extend freely.
Furthermore, a slide rod 7 is axially arranged at the end of the fixed sleeve 3, a blind hole is axially arranged at the end of the sleeve 5, the slide rod 7 is arranged in the blind hole and is in sliding fit, the fixed sleeve 3 is connected with the sleeve 5 through a spring 4, one end of the spring 4 is fixed in the sleeve 5, the fixed sleeve 3 is separated from the sleeve 5 when the buckle is opened, the coaxiality of the fixed sleeve 3 and the sleeve 5 is ensured when the pressure sensor 6 is used, so that the detection accuracy of the pressure sensor 6 can be ensured, the fixed sleeve 3 is connected with the sleeve 5 through the spring 4, the deformation of the spring 4 is not easy to control, the spring has multiple degrees of freedom, the embodiment only needs the degree of freedom in the elastic expansion direction, and contraction, so as to limit other degrees of freedom of the spring 4, the slide rod 7 is arranged on the fixed sleeve 3, and the slide rod, therefore, when the spring 4 stretches, the sleeve 5 can slide along the sliding rod 7 to realize axial movement, and the coaxiality of the sleeve 3 and the fixed sleeve 5 is always kept; in practical use, the sliding rod 7 can be arranged on the sleeve 5, and the blind hole is arranged in the fixed sleeve 3, so that the work is not influenced.
Further, the pressure sensor 6 comprises a pressure-strain converter 15, a plurality of elastic sensitive elements 11 are arranged on the end face of the pressure-strain converter 15, the elastic sensitive elements 11 are uniformly distributed on the periphery of the end face of the pressure-strain converter 15, and the pressure sensor also comprises a pressure transmission device 10, and the pressure transmission device 10 is arranged on the sleeve 5 and used for outputting pressure signals; in the embodiment, six elastic sensing elements 11 are preferably arranged, stress numbers of different positions in the hole are obtained through the six elastic sensing elements 11, then the measured pressure is converted into corresponding resistance value changes through the pressure stress converter 15, and then the resistance value changes are transmitted through the pressure sensor 6.
Working principle of the pressure stress converter: the deformation of the elastic element causes the resistance value of the strain sensitive element to change, and the change is converted into electric quantity to be output through an internal conversion circuit, namely the change of the output electric quantity can reflect the change of the measured pressure.
A method for centering by using a shaft diameter adjustable three-spring pressure sensing mechanical centering device comprises the following steps,
the centering device is arranged on a main shaft 12 through a clamping mechanism 1, then the main shaft 12 and the centering device are placed in a hole 13 needing centering, a buckle structure between a sleeve 5 and a fixed sleeve 3 is opened, a spring 4 is extended, and the spring 4 is extended to enable elastic sensitive elements 11 on three pressure sensors 6 to be in contact with the inner wall of the hole 13; signals of the three pressure sensors 6 are respectively transmitted to a data processing module through a pressure transmission device 10 for processing, and pressure reading is carried out on a display after processing; the position of the spindle 12 is adjusted according to the pressure readings of the three pressure sensors 6, and the reading sizes of the three pressure sensors 6 are compared during adjustment, so that the reading sizes of the three pressure sensors 6 are within an error range, namely the hole 13 is coaxial with the spindle 12, the position of the hole is determined, and the position of the hole 13 is determined according to the position of the spindle.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (8)
1. The shaft diameter adjustable type three-spring pressure sensing mechanical centering device is characterized by comprising a base (2), wherein a clamping mechanism (1) is arranged in the middle of the base (2), and at least three pressure detection mechanisms (14) are uniformly distributed around the base (2);
pressure measurement mechanism (14) are including fixed cover (3), fixed cover (3) are fixed on base (2), be provided with a spring (4) in fixed cover (3), the other end of spring (4) is provided with sleeve (5), be provided with pressure sensor (6) on sleeve (5) keep away from a terminal surface of spring (4).
2. The shaft diameter adjustable three-spring pressure sensing mechanical centering device of claim 1, wherein: the clamping mechanism (1) is a three-jaw chuck, the three-jaw chuck is fixed on the base (2) through a bolt, and the centering device is clamped on the main shaft (12) through the three-jaw chuck.
3. The shaft diameter adjustable three-spring pressure sensing mechanical centering device of claim 1, wherein: the base (2) is an annular base, the middle part of the base is an annular cavity, and the clamping mechanism (1) is arranged in the cavity of the annular base and is coaxial with the annular base.
4. The shaft diameter adjustable three-spring pressure sensing mechanical centering device of claim 1, wherein: the fixed sleeve (3) is fixed on the outer side of the base (2) through a bolt, and the spring (4) is fixed in the inner cavity of the fixed sleeve (3).
5. The shaft diameter adjustable three-spring pressure sensing mechanical centering device of claim 1, wherein: the outside of fixed cover (3) is provided with draw-in groove (8), the outside of sleeve (5) is provided with buckle (9) with draw-in groove (8) complex for shrink spring (4).
6. The shaft diameter adjustable three-spring pressure sensing mechanical centering device of claim 1, wherein: the fixed cover (3) tip is provided with slide bar (7) along the axial, the tip of sleeve (5) is provided with the blind hole along its axial, slide bar (7) are arranged in sliding fit in the blind hole.
7. The shaft diameter adjustable three-spring pressure sensing mechanical centering device of claim 1, wherein: the pressure sensor (6) comprises a pressure-strain converter (15), a plurality of elastic sensitive elements (11) are arranged on the end face of the pressure-strain converter (15), the elastic sensitive elements (11) are uniformly distributed on the periphery of the end face of the pressure-strain converter (15), and the pressure sensor further comprises a pressure transmission device (10), and the pressure transmission device (10) is arranged on the sleeve (5) and used for outputting pressure signals.
8. A centering method by using the shaft diameter adjustable three-spring pressure sensing mechanical centering device as claimed in any one of claims 1 to 7, characterized in that: comprises the following steps of (a) carrying out,
the centering device is arranged on a main shaft (12) through a clamping mechanism (1), then the main shaft (12) and the centering device are placed in a hole (13) needing centering, a buckling structure between a sleeve (5) and a fixed sleeve (3) is opened, a spring (4) is extended, and elastic sensitive elements (11) on three pressure sensors (6) are contacted with the inner wall of the hole (13) due to the extension of the spring (4); signals of the three pressure sensors (6) are respectively transmitted to a data processing module through a pressure transmission device (10) for processing, and pressure reading is carried out on a display after processing; the position of the spindle (12) is adjusted according to the pressure readings of the three pressure sensors (6), and the reading sizes of the three pressure sensors (6) are compared during adjustment, so that the reading sizes of the three pressure sensors (6) are within an error range, namely the hole (13) is coaxial with the spindle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285054.6A CN110926302A (en) | 2019-12-13 | 2019-12-13 | Shaft diameter adjustable three-spring pressure sensing mechanical centering device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285054.6A CN110926302A (en) | 2019-12-13 | 2019-12-13 | Shaft diameter adjustable three-spring pressure sensing mechanical centering device and method |
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| CN110926302A true CN110926302A (en) | 2020-03-27 |
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| CN201911285054.6A Pending CN110926302A (en) | 2019-12-13 | 2019-12-13 | Shaft diameter adjustable three-spring pressure sensing mechanical centering device and method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709591A (en) * | 2013-12-20 | 2014-04-09 | 苏州市双赢包装材料有限公司 | Formula of phenolic resin modified plastic |
| CN111912551A (en) * | 2020-07-16 | 2020-11-10 | 嘉兴学院 | High-stability monocrystalline silicon pressure sensor |
| CN112792724A (en) * | 2020-12-31 | 2021-05-14 | 杨才军 | High-precision machining device for inner hole of shaft part |
| CN113216162A (en) * | 2021-04-12 | 2021-08-06 | 深圳市工勘岩土集团有限公司 | Full-rotation double-sleeve pile forming structure for cast-in-place pile |
| CN113338270A (en) * | 2021-04-12 | 2021-09-03 | 深圳市工勘岩土集团有限公司 | Full-rotation double-sleeve variable-section retaining wall pile forming method for cast-in-place pile |
| CN113489020A (en) * | 2021-07-12 | 2021-10-08 | 广西华超电气有限公司 | Intelligent online diagnosis system of capacitor cabinet |
| CN114152237A (en) * | 2021-11-26 | 2022-03-08 | 珠海格力电器股份有限公司 | Monitoring device based on radial error of main shaft |
| CN115058908A (en) * | 2022-08-05 | 2022-09-16 | 江苏福尔特金属制品有限公司 | Steel wire stranding device, coaxiality assembling and adjusting test tool and use method thereof |
| CN115816264A (en) * | 2022-12-20 | 2023-03-21 | 杭州天桴光电技术有限公司 | Quick polishing device for end face of cylindrical body of fluoride crystal ingot |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709591A (en) * | 2013-12-20 | 2014-04-09 | 苏州市双赢包装材料有限公司 | Formula of phenolic resin modified plastic |
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| CN113216162A (en) * | 2021-04-12 | 2021-08-06 | 深圳市工勘岩土集团有限公司 | Full-rotation double-sleeve pile forming structure for cast-in-place pile |
| CN113338270A (en) * | 2021-04-12 | 2021-09-03 | 深圳市工勘岩土集团有限公司 | Full-rotation double-sleeve variable-section retaining wall pile forming method for cast-in-place pile |
| CN113489020A (en) * | 2021-07-12 | 2021-10-08 | 广西华超电气有限公司 | Intelligent online diagnosis system of capacitor cabinet |
| CN113489020B (en) * | 2021-07-12 | 2022-08-16 | 广西华超电气有限公司 | Intelligent online diagnosis system of capacitor cabinet |
| CN114152237A (en) * | 2021-11-26 | 2022-03-08 | 珠海格力电器股份有限公司 | Monitoring device based on radial error of main shaft |
| CN115058908A (en) * | 2022-08-05 | 2022-09-16 | 江苏福尔特金属制品有限公司 | Steel wire stranding device, coaxiality assembling and adjusting test tool and use method thereof |
| CN115816264A (en) * | 2022-12-20 | 2023-03-21 | 杭州天桴光电技术有限公司 | Quick polishing device for end face of cylindrical body of fluoride crystal ingot |
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Application publication date: 20200327 |