CN114088038B - Bearing inner and outer diameter measurement auxiliary fixing device and measurement method based on three coordinates - Google Patents
Bearing inner and outer diameter measurement auxiliary fixing device and measurement method based on three coordinates Download PDFInfo
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- CN114088038B CN114088038B CN202111385016.5A CN202111385016A CN114088038B CN 114088038 B CN114088038 B CN 114088038B CN 202111385016 A CN202111385016 A CN 202111385016A CN 114088038 B CN114088038 B CN 114088038B
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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
- 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
- G01B21/10—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 diameters
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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
- 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
- G01B21/10—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 diameters
- G01B21/14—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 diameters internal diameters
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- General Life Sciences & Earth Sciences (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a three-coordinate-based auxiliary fixing device for measuring the inner diameter and the outer diameter of a bearing and a measuring method, wherein the device comprises a base, a plurality of sliding blocks, a plurality of pressing covers, a plurality of spring fixing seats and a plurality of springs; a plurality of inner cavity holes are vertically arranged in the base at equal intervals, the upper end of each inner cavity hole is of a closing-in hole structure, and the lower part of each inner cavity hole is provided with an internal thread; the sliding blocks are arranged in the inner cavity holes on the base in a one-to-one sliding manner; the spring fixing seats are arranged at the lower parts of the inner cavity holes one by one and are connected with the lower parts of the inner cavity holes in a threaded manner; the springs are arranged in the inner cavity holes one by one, the upper ends of the springs are in pressing contact with the lower ends of the corresponding sliding blocks, and the lower ends of the springs are in contact with the spring positioning surfaces corresponding to the upper ends of the spring fixing seats. The gland is fixedly arranged at the upper end of the base through a screw, and a U-shaped opening is arranged at the gland at the position corresponding to each inner cavity hole; limiting blocks for clamping the outer ring of the bearing are symmetrically arranged at the positions of the sliding hole sections and the fixing holes Duan Xiangjiao on two sides of each U-shaped opening. The invention improves the measuring precision and the measuring efficiency of the bearing.
Description
Technical Field
The invention belongs to the field of precision measurement, relates to the technical field of bearing measurement, and relates to a three-coordinate-based bearing inner and outer diameter measuring device and method.
Background
Bearings are an important component in contemporary mechanical devices. Its main function is to support the mechanical rotator, reduce the friction coefficient in the course of its movement and ensure its rotation accuracy. In high-precision assemblies, bearings are typically assembled with other components in a size that would result in wobble of the bearing if the hole or shaft to bearing fit is too large, which would result in loss of rotational accuracy, and too small a fit gap would result in failure of assembly or deformation of the bearing. Therefore, micron-sized accurate measurement of the inner and outer diameters of the bearing is necessary to facilitate machining and later assembly of the dimensions compatible therewith. Because of the self structure of the bearing, the inner ring and the outer ring can move to a certain extent, the inner ring and the outer ring are difficult to measure simultaneously, the inner ring and the outer ring are respectively measured, the measuring efficiency is low, and the inner diameter is difficult to fix. Therefore, an auxiliary tool for positioning the bearing is needed to realize simultaneous measurement of the inner ring and the outer ring of the bearing.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a three-coordinate-based auxiliary fixing device for measuring the inner diameter and the outer diameter of a bearing and a measuring method, wherein the auxiliary fixing device can improve the measuring efficiency and the measuring accuracy of the bearing.
One of the above objects of the present invention is achieved by the following technical solutions:
an auxiliary fixing device is measured to inside and outside diameter of bearing based on three coordinates, its characterized in that: the device comprises a base, a plurality of sliding blocks, a plurality of pressing covers, a plurality of spring fixing seats and a plurality of springs;
a plurality of inner cavity holes are vertically formed in the base at equal intervals, the upper end of each inner cavity hole is of a closing-in hole structure, and the lower part of each inner cavity hole is provided with an internal thread; the upper end of the base is provided with a plurality of threaded holes connected with the gland and a plurality of countersunk holes connected with the three-coordinate measuring flat plate;
the sliding blocks are arranged in the inner cavity holes on the base in a one-to-one sliding mode, each sliding block is composed of a large cylinder and a small cylinder, the large cylinder at the lower portion is in sliding contact fit with the inner cavity hole, the small cylinder at the upper portion is in sliding contact fit with the closing-in hole, and a chamfer face is arranged at the upper end of the small cylinder;
the spring fixing seats are arranged at the lower parts of the inner cavity holes one by one, external threads are arranged on the outer surface of each spring fixing seat, and the outer surfaces of the spring fixing seats are in threaded connection with the internal threads at the lower parts of the inner cavity holes;
the springs are arranged in the inner cavity holes one by one, the upper ends of the springs are in pressing contact with the lower ends of the corresponding sliding blocks, and the lower ends of the springs are in contact with the spring positioning surfaces corresponding to the upper ends of the spring fixing seats.
The gland is fixedly arranged at the upper end of the base through a screw, a U-shaped opening is formed in the gland at the position corresponding to each inner cavity hole, the U-shaped opening is formed by a rectangular sliding hole section and a semicircular fixed hole section, the width of the sliding hole section is equal to the outer diameter of the bearing, and the diameter of the fixed hole section is equal to the outer diameter of the bearing; limiting blocks for clamping the bearing outer ring are symmetrically arranged at the positions of the sliding hole sections and the fixing holes Duan Xiangjiao on two sides of each U-shaped opening.
Further: each spring fixing seat consists of a small-diameter cylindrical section and a large-diameter cylindrical section which are arranged up and down, and an external thread is arranged on the outer cylindrical surface of the large-diameter cylindrical section; the upper end of the large-diameter cylindrical section forms a spring positioning surface which is contacted with the lower end of the spring;
further: a through hole is arranged at the center of the spring fixing seat.
Further: the lower corner of each limiting block is provided with an inverted L-shaped positioning opening corresponding to the position of the U-shaped opening, the vertical edge of the positioning opening is coplanar with the side surface corresponding to the U-shaped opening, the upper transverse edge of the positioning opening extends out to the upper side of the U-shaped opening, the distance between the upper transverse edge and the top surface of the corresponding sliding block is consistent with the thickness of the bearing to be measured, and the ejection length of the upper transverse edge is consistent with the comparison thickness of the bearing outer ring.
The second object of the present invention is achieved by the following technical scheme:
a three-coordinate-based bearing inner and outer diameter measurement method is characterized by comprising the following steps of: the measuring method adopts the auxiliary fixing device and comprises the following measuring steps:
The auxiliary fixing device is fixed on the three-coordinate measuring flat plate by using screws through counter bores on the base, so that the central connecting lines of a plurality of inner cavity holes on the auxiliary fixing device are parallel to the X-axis direction of the three coordinates.
The method comprises the steps that a plurality of bearings are inserted into positions between a limiting block and a sliding block from the outer ends of a plurality of U-shaped holes one by one, the U-shaped holes realize the positioning of the bearings in the XY direction, and the limiting block and the sliding block realize the limiting of the bearings in the Z direction through the extrusion action of springs, so that the bearings are fixed;
3.1, firstly, programming a measurement program of a first bearing, then using a three-coordinate array module, editing the measurement quantity and measurement intervals, modifying the naming of measurement elements, and completing the programming of the whole program;
and 3.2, measuring the inner pore diameter and the outer pore diameter of the plurality of bearings according to a written measurement program.
The invention has the advantages and positive effects that:
1. this auxiliary fixing device can realize the XY to the location to the bearing through the U-shaped trompil on the gland, through set up in the locating piece of U-shaped trompil upper end both sides and install in the sliding block on base inner chamber hole upper portion through the spring upper roof pressure, realized the Z to the location to the bearing to realize the fixed of bearing inner race and inner race, because of exerting the measuring force on three-dimensional measuring equipment on the fixed force far greater than on bearing inner race and outer race through the spring effect, guaranteed in measuring process that the rotation can not take place in the inner and outer race of bearing.
2. This auxiliary fixing device sets up a plurality of inner chamber holes on the base to correspond on the gland and set up a plurality of U-shaped trompils, can once a plurality of bearings of fixed mounting, thereby can realize once measuring a plurality of bearings, and then improved measurement efficiency.
3. The measuring method can realize the measurement of the inner ring and the outer ring of a plurality of bearings in a programming mode by means of the auxiliary measuring fixing device, and greatly improves the measuring efficiency and the measuring precision.
Drawings
FIG. 1 is an isometric view of an auxiliary fastening device of the present invention;
FIG. 2 is an overall cross-sectional view of the auxiliary fixing device of the present invention;
FIG. 3 is an isometric view of the base of the present invention, shown in FIG. 1;
FIG. 4 is an isometric view 2 of the base of the present invention;
FIG. 5 is a cross-sectional view of a threaded bore and counterbore of the base of the present invention;
FIG. 6 is a half cross-sectional view of the base of the present invention;
FIG. 7 is a schematic view of the structure of a slider of the present invention 1;
FIG. 8 is a schematic view of the structure of the slider of the present invention 2;
FIG. 9 is a schematic view of a spring retainer structure of the present invention 1;
FIG. 10 is a schematic view of a spring retainer structure of the present invention shown in FIG. 2;
FIG. 11 is a schematic structural view of a gland of the present invention;
FIG. 12 is a schematic view of the present invention with the auxiliary fixture placed on a three-coordinate measurement plate;
FIG. 13 is a schematic view of the external appearance of the auxiliary fixing device of the present invention after the auxiliary fixing device is mounted with the bearing;
FIG. 14 is a half cross-sectional view of the present invention after the auxiliary fixture is installed with the bearing;
fig. 15 is a reference diagram for performing the programming of the measurement program according to the present invention.
Detailed Description
The structure of the present invention will be further described by way of examples with reference to the accompanying drawings. It should be noted that the present embodiments are illustrative and not restrictive.
An auxiliary fixing device for measuring the inner diameter and the outer diameter of a bearing based on three coordinates, please refer to fig. 1-15, mainly comprises a base 1, a sliding block 3, a gland 2, a spring fixing seat 5 and a spring 4. The gland and the base are fixed through four screws, and the connection of the gland and the base is mainly responsible for positioning of bearing placement. The sliding block is positioned at the innermost end of the cavity of the base, and two outer circles of the sliding block are respectively matched with the inner cavity hole and the step hole of the base, so that the sliding block can axially slide in the inner cavity of the base, and the upper end surface of the sliding block is slightly higher than the upper top surface of the base. The external thread of the spring fixing seat acts with the thread below the inner cavity of the base, a spring is arranged between the external thread of the spring fixing seat and the sliding block, and the upward pressure of the sliding block is regulated according to the offset position change condition of the spring fixing seat.
1) Base seat
Fig. 3 and 4 are schematic structural views of the base, which mainly play a role in supporting integrally and connecting and placing with three coordinates. As shown in fig. 3, the upper surface of the base is provided with four threaded holes 1.1 and two countersinks 1.2, the four threaded holes are used for connecting and fixing the base and the gland, and the two countersinks are used for connecting and fixing the base and the three-coordinate measuring flat plate. Fig. 5 is a cross-sectional view of a threaded bore and a counterbore. Three inner cavity holes 1.3 are designed in the base, as shown in fig. 6, the distances between every two adjacent inner cavity holes are equal, array programs are conveniently written in three coordinates, the upper parts of the inner cavity holes are in a closing-in shape and are matched with the sliding block, the sliding block can directionally slide in the sliding block, and the lower parts of the inner cavities are designed by threads 1.4 and are matched with the spring fixing seats.
2) Sliding block
Fig. 7 and 8 are schematic views of the slider structure. The sliding block is arranged in the inner cavity of the base and is divided into three working parts, the lower end cylinder 3.3 is matched with the inner cavity hole of the base, the middle cylinder 3.2 is matched with the upper end hole of the base, and the two cylinders play roles of sliding and vertical limiting. Under the non-use state, the conical surface of the upper end of the sliding block is higher than the upper surface of the base, and the chamfer part 3.1 at the upper end ensures that the top surface of the sliding block is contacted with the inner ring of the bearing instead of the outer ring of the bearing after the bearing is placed on one hand, and on the other hand, the bearing is placed and taken conveniently.
3) Spring fixing seat
Fig. 9 and 10 are schematic views of a spring fixing seat structure, the spring fixing seat is composed of two cylindrical sections, a lower cylindrical section 5.2 is a threaded column and is matched with threads in an inner cavity of a base, an upper cylindrical section 5.1 is a spring limiting cylinder for preventing the spring from shaking, and the center of the spring fixing seat is provided with a through hole 5.3 so as to facilitate manual rotation of the spring fixing seat. The elastic force of the adjusting spring can be realized by rotating the spring fixing seat so as to change the upward extrusion force of the sliding block.
4) Gland
Fig. 11 is a schematic structural diagram of a gland, which is designed with three U-shaped openings, which are in one-to-one correspondence with three inner cavities on a base. The U-shaped opening is formed by a sliding hole section 2.1 and a fixed hole section 2.2, the inner arc diameter of the fixed groove is equal to the outer diameter of the bearing, and the width of the sliding hole section is equal to the outer diameter of the bearing. Four limiting blocks 2.3 are arranged on the pressure cover, the wall thickness of the protruding portion of the upper end of the limiting block is equal to that of the outer ring of the bearing, and the limiting blocks are positioned at the sliding hole section and the fixing hole Duan Xiangjiao. The gland is fixedly connected with the base through a screw and used for uniquely positioning the bearing.
The method for measuring the inner diameter and the outer diameter of the bearing by adopting the auxiliary fixing device for measuring the inner diameter and the outer diameter of the bearing based on three coordinates comprises the following steps:
1) Placement of auxiliary fixing device
The bearing 100 fixture is secured to the three-coordinate measuring plate 6 by screws through the counterbore of the base, with the U-shaped opening in the press cover generally facing the operator, thus facilitating the placement of the bearing by the operator, as shown in fig. 12. The arrangement mode can ensure that the central connecting lines of a plurality of inner cavity holes on the auxiliary fixing device are parallel to the X-axis direction of the three coordinates.
2) Fixing the bearing
Fig. 13 is a rear structural view of the auxiliary fixing device mounting bearing, and fig. 14 is a rear half sectional view of the auxiliary fixing device mounting bearing. The U-shaped opening is used for completing the positioning of the bearing in the XY direction, the limiting block and the upward extrusion force of the spring are used for completing the limiting of the bearing in the Z direction, and meanwhile, the fixing of the bearing is completed based on the elastic deformation of the spring.
3) Coordinate system establishment and measurement
Firstly, a measurement program of a first bearing is compiled, a three-coordinate array module is used in fig. 15, the measurement quantity and the measurement interval are edited, the naming of measurement elements is modified, and the overall program is compiled. In the later measurement process, the placement position of the fixing device may deviate, and the repeated use of the program can be completed only by modifying the X, Y origin value in the first bearing measurement program;
and measuring the inner aperture and the outer aperture of the bearing according to the written measurement program.
Although the embodiments of the present invention and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.
Claims (5)
1. An auxiliary fixing device is measured to inside and outside diameter of bearing based on three coordinates, its characterized in that: the device comprises a base, a plurality of sliding blocks, a plurality of pressing covers, a plurality of spring fixing seats and a plurality of springs;
a plurality of inner cavity holes are vertically formed in the base at equal intervals, the upper end of each inner cavity hole is of a closing-in hole structure, and the lower part of each inner cavity hole is provided with an internal thread; the upper end of the base is provided with a plurality of threaded holes connected with the gland and a plurality of countersunk holes connected with the three-coordinate measuring flat plate;
the sliding blocks are arranged in the inner cavity holes on the base in a one-to-one sliding mode, each sliding block is composed of a large cylinder and a small cylinder, the large cylinder at the lower portion is in sliding contact fit with the inner cavity hole, the small cylinder at the upper portion is in sliding contact fit with the closing-in hole, and a chamfer face is arranged at the upper end of the small cylinder;
the spring fixing seats are arranged at the lower parts of the inner cavity holes one by one, external threads are arranged on the outer surface of each spring fixing seat, and the outer surfaces of the spring fixing seats are in threaded connection with the internal threads at the lower parts of the inner cavity holes;
the springs are arranged in the inner cavity holes one by one, the upper ends of the springs are in pressing contact with the lower ends of the corresponding sliding blocks, and the lower ends of the springs are in contact with the spring positioning surfaces corresponding to the upper ends of the spring fixing seats;
the gland is fixedly arranged at the upper end of the base through a screw, a U-shaped opening is formed in the gland at the position corresponding to each inner cavity hole, the U-shaped opening is formed by a rectangular sliding hole section and a semicircular fixed hole section, the width of the sliding hole section is equal to the outer diameter of the bearing, and the diameter of the fixed hole section is equal to the outer diameter of the bearing; limiting blocks for clamping the bearing outer ring are symmetrically arranged at the positions of the sliding hole sections and the fixing holes Duan Xiangjiao on two sides of each U-shaped opening.
2. The three-coordinate-based bearing inner and outer diameter measurement auxiliary fixing device according to claim 1, wherein: each spring fixing seat consists of a small-diameter cylindrical section and a large-diameter cylindrical section which are arranged up and down, and an external thread is arranged on the outer cylindrical surface of the large-diameter cylindrical section; the upper end of the large-diameter cylindrical section forms a spring positioning surface which is contacted with the lower end of the spring.
3. The three-coordinate-based bearing inner and outer diameter measurement auxiliary fixing device according to claim 1, wherein: a through hole is arranged at the center of the spring fixing seat.
4. The three-coordinate-based bearing inner and outer diameter measurement auxiliary fixing device according to claim 1, wherein: the lower corner of each limiting block is provided with an inverted L-shaped positioning opening corresponding to the position of the U-shaped opening, the vertical edge of the positioning opening is coplanar with the side surface corresponding to the U-shaped opening, the upper transverse edge of the positioning opening extends out to the upper side of the U-shaped opening, the distance between the upper transverse edge and the top surface of the corresponding sliding block is consistent with the thickness of the bearing to be measured, and the ejection length of the upper transverse edge is consistent with the comparison thickness of the bearing outer ring.
5. A measuring method using the three-coordinate-based bearing inner and outer diameter measurement auxiliary fixing device according to any one of claims 1 to 4, characterized by comprising the following measuring steps:
step 1, placing auxiliary fixing devices on a three-coordinate measuring panel
Fixing the auxiliary fixing device on a three-coordinate measuring flat plate by using a screw through a counter bore on the base, so that the central connecting lines of a plurality of inner cavity holes on the auxiliary fixing device are parallel to the X-axis direction of the three coordinates;
step 2, fixing the bearing
The method comprises the steps that a plurality of bearings are inserted into positions between a limiting block and a sliding block from the outer ends of a plurality of U-shaped holes one by one, the U-shaped holes realize the positioning of the bearings in the XY direction, and the limiting block and the sliding block realize the limiting of the bearings in the Z direction through the extrusion action of springs, so that the bearings are fixed;
step 3, establishing a coordinate system and measuring the bearing workpiece
3.1, firstly, programming a measurement program of a first bearing, then using a three-coordinate array module, editing the measurement quantity and measurement intervals, modifying the naming of measurement elements, and completing the programming of the whole program;
and 3.2, measuring the inner pore diameter and the outer pore diameter of the plurality of bearings according to a written measurement program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111385016.5A CN114088038B (en) | 2021-11-22 | 2021-11-22 | Bearing inner and outer diameter measurement auxiliary fixing device and measurement method based on three coordinates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111385016.5A CN114088038B (en) | 2021-11-22 | 2021-11-22 | Bearing inner and outer diameter measurement auxiliary fixing device and measurement method based on three coordinates |
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| Publication Number | Publication Date |
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| CN114088038A CN114088038A (en) | 2022-02-25 |
| CN114088038B true CN114088038B (en) | 2023-06-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205607304U (en) * | 2016-03-23 | 2016-09-28 | 新昌新天龙纽尚精密轴承有限公司 | Outside diameter detection device in bearing |
| CN209279835U (en) * | 2018-11-08 | 2019-08-20 | 沪东重机有限公司 | Three-dimensional coordinates measurement positioning assisting tooling for delivery valve seat detection |
| CN210802310U (en) * | 2019-10-18 | 2020-06-19 | 沈阳逸拓科技有限公司 | Bearing inner race internal diameter detection device |
| CN112355930A (en) * | 2020-10-30 | 2021-02-12 | 中国船舶重工集团公司第七0七研究所 | Quick measurement fixing device of belt ring roof beam gyration type part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1150092A3 (en) * | 2000-04-12 | 2001-11-07 | Bidwell Corporation | Gage set for measuring ring shaped parts |
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2021
- 2021-11-22 CN CN202111385016.5A patent/CN114088038B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205607304U (en) * | 2016-03-23 | 2016-09-28 | 新昌新天龙纽尚精密轴承有限公司 | Outside diameter detection device in bearing |
| CN209279835U (en) * | 2018-11-08 | 2019-08-20 | 沪东重机有限公司 | Three-dimensional coordinates measurement positioning assisting tooling for delivery valve seat detection |
| CN210802310U (en) * | 2019-10-18 | 2020-06-19 | 沈阳逸拓科技有限公司 | Bearing inner race internal diameter detection device |
| CN112355930A (en) * | 2020-10-30 | 2021-02-12 | 中国船舶重工集团公司第七0七研究所 | Quick measurement fixing device of belt ring roof beam gyration type part |
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| CN114088038A (en) | 2022-02-25 |
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