A precision measuring instrument for the cone wall thickness of a bearing ring

Abstract

The invention provides a bearing ring conical wall thickness precision measuring instrument, which relates to the technical field of wall thickness gauges, and comprises an L-shaped bracket, a positioning shaft, a measuring piece, a dial indicator, a rectangular calibration block, and a spherical roller thrust bearing; the device can measure the conical wall thickness of the spherical roller thrust bearing by moving a light-weight device while the spherical roller thrust bearing is stationary; the rectangular calibration block is used as a standard block to calibrate the size of a specified height, different rectangular calibration blocks are designed according to different spherical roller thrust bearing models, and are clearly marked; before measuring the wall thickness, only the corresponding standard block needs to be used to calibrate the wall thickness height, and then the conical wall thickness of the spherical roller thrust bearing is detected, thereby greatly improving the work efficiency of detection personnel while ensuring the detection quality.

Description

Technical Field

[0001] The invention relates to the technical field of wall thickness gauges, in particular to a precision measuring instrument for the wall thickness of a bearing ring conical surface. Background Art

[0002] Spherical roller thrust bearings have the largest rated load of all thrust bearings and can withstand combined loads. When machining the inner ring of the bearing cage, the inner ring rib is a conical surface, which is not easy to measure with ordinary measurement methods. In order to ensure the wall thickness at the specified height, a CMM measuring machine is required for measurement. However, for workpieces with heavier mass, the handling problem during the inspection process brings inconvenience to the inspection; at the same time, when the measurement workload is large, there is a problem of low inspection efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a precision measuring instrument for the wall thickness of the conical surface of a bearing ring, which has the advantage of being able to measure the wall thickness of a specified height of the conical surface of a spherical roller thrust bearing without moving, thereby solving the technical problems of the inconvenience of carrying large-mass workpieces during inspection when measuring with a CMM measuring machine; and the low inspection efficiency when the measuring workload is large.

[0004] The present invention provides a bearing ring conical surface wall thickness precision measuring instrument, comprising:

[0005] An L-shaped bracket, wherein a positioning shaft is slidably mounted in the transverse portion of the L-shaped bracket along the length direction, and an end of the positioning shaft away from the longitudinal portion of the L-shaped bracket is elastically connected to the outer wall on the same side of the L-shaped bracket;

[0006] A measuring piece, which is detachably fixedly sleeved on one end of the positioning shaft close to the longitudinal portion of the L-shaped bracket;

[0007] The longitudinal portion of the L-shaped bracket is clamped with a dial indicator;

[0008] A rectangular calibration block having a sloped surface on one side;

[0009] The upper edge of the slope of the rectangular calibration block fits with the lower edge of the outer side surface of the longitudinal portion of the L-shaped bracket, and the top surface of the rectangular calibration block fits with the bottom surface of the transverse portion of the L-shaped bracket;

[0010] The upper end of the measuring piece is against the detection end of the dial indicator, and the detection part of the lower end of the measuring piece is in contact with the slope of the rectangular calibration block to calibrate the dial indicator reading;

[0011] After the rectangular calibration block is removed, the position of the measuring piece remains unchanged;

[0012] A spherical roller thrust bearing replaces the rectangular calibration block and measures the wall thickness of the spherical roller thrust bearing tapered surface at the height of the slope of the rectangular calibration block via the calibrated measuring piece.

[0013] As a further optimization scheme, in order to realize the elastic connection between the end of the positioning shaft and the outer wall on the same side of the L-shaped bracket by using the spring as an elastic member, the positioning shaft and the measuring piece are retracted by using the spring, so that the measuring piece abuts against the detection end of the dial indicator and the slope of the rectangular calibration block and the conical surface of the spherical roller thrust bearing, and a cavity is opened in the transverse part of the L-shaped bracket, and the cavity is designed to be away from the opening at one end of the longitudinal part of the L-shaped bracket;

[0014] The open end of the transverse portion of the L-shaped bracket is fixedly connected with a blocking cover;

[0015] The front and rear sides of the inner wall of the blocking cover are both laterally fixedly connected with springs, and one end of the springs on both sides close to the transverse part of the L-shaped bracket is fixedly connected with a push plate;

[0016] The push plate is fixedly connected to one end of the positioning shaft away from the longitudinal portion of the L-shaped bracket;

[0017] The push plate is slidably assembled in the opening of the longitudinal portion of the L-shaped bracket;

[0018] A calibrated measuring piece positioning piece is screwed on one side of the blocking cover away from the transverse portion of the L-shaped bracket, and one end of the calibrated measuring piece positioning piece located in the blocking cover abuts against the outer wall of the push plate.

[0019] As a further optimization solution, in order to block and locate the position of the measuring piece after calibration to avoid displacement of the measuring piece, the measuring piece positioning piece after calibration includes:

[0020] A round rod, an outer wall of which is provided with an external thread on a side away from the positioning shaft;

[0021] The external thread is screwed into the reserved screw hole at the end of the plug cover;

[0022] The end surface of the round rod located outside the plug cover is provided with a hexagonal groove;

[0023] One end of the round rod located in the blocking cover abuts against the outer wall of the push plate.

[0024] As a further optimization scheme, in order to limit the front and rear positions of the rectangular calibration block and prevent the front and rear positions of the rectangular calibration block from tilting, a front and rear limiting structure is installed between the bottom surface of the L-shaped bracket and the upper end of the rectangular calibration block, which includes:

[0025] There are two limit retaining edges parallel to each other in the front and rear.

[0026] The two limit retaining edges are respectively fixedly assembled on the front and rear edges of the bottom of the L-shaped bracket;

[0027] The upper edge of the rectangular calibration block is provided with a strip groove corresponding to the limit stop.

[0028] The limiting retaining edge is inserted into the strip-shaped groove on the same side.

[0029] As a further optimization scheme, in order to limit and block the spherical roller thrust bearing or the rectangular calibration block and locate its placement, it also includes:

[0030] The limiting shielding structure comprises:

[0031] A wedge-shaped slide groove is transversely opened in the middle of the bottom surface of the L-shaped bracket;

[0032] A wedge-shaped slider is slidably clamped in the wedge-shaped slide groove, and a column is fixedly mounted on the lower end of the wedge-shaped slider;

[0033] The lower ends of the front and rear side walls of the transverse portion of the L-shaped bracket are provided with transverse grooves corresponding to the wedge-shaped slide grooves, and the inner ends of the transverse grooves are connected to the wedge-shaped slide grooves;

[0034] A second fixing bolt is slidably inserted in the transverse groove, and the end of the second fixing bolt is screwed into a reserved screw hole on the outer wall of the wedge-shaped sliding block;

[0035] The column abuts against the outer wall of the spherical roller thrust bearing.

[0036] As a further optimization solution, in order to further support and guide the measured part, it also includes:

[0037] An orientation shaft, which transversely passes through the middle of the lower end of the longitudinal portion of the L-shaped bracket;

[0038] The end of the orientation shaft away from the L-shaped bracket is detachably fixed to the measuring piece.

[0039] As a further optimization solution, in order to transmit the force exerted by the measuring needle against the conical surface of the spherical roller thrust bearing to the dial indicator, the thickness of the conical surface of the spherical roller thrust bearing is measured using the dial indicator, and the measuring part includes:

[0040] A strip-shaped vertical plate, wherein a strip-shaped through hole is longitudinally opened in the middle thereof;

[0041] A longitudinal groove is formed on the front wall of the strip-shaped vertical plate corresponding to the strip-shaped through hole, and the rear end of the longitudinal groove is connected to the strip-shaped through hole;

[0042] The end of the positioning shaft away from the L-shaped bracket is inserted into the strip-shaped through hole;

[0043] A first fixing bolt is threadedly connected in the longitudinal groove, and the end of the first fixing bolt abuts against the outer wall of the end of the positioning shaft away from the L-shaped bracket;

[0044] A measuring needle is vertically fixedly mounted on the lower end of one side of the strip vertical plate close to the L-shaped bracket, and the measuring needle is the lower end detection part of the measuring piece.

[0045] As a further optimization solution, in order to accurately control the lifting height of the strip vertical plate and facilitate the detection of the wall thickness of the conical surface of the spherical roller thrust bearing at different heights, a scale groove is opened along the length direction at the edge of the strip through hole.

[0046] As a further optimization scheme, in order to stably clamp the dial indicator and facilitate its measurement, the upper end of the longitudinal portion of the L-shaped bracket is equipped with a dial indicator clamping structure, which includes:

[0047] A mounting groove is provided at the upper end of the front wall of the longitudinal portion of the L-shaped bracket;

[0048] The bottom surface of the installation groove is provided with a slide groove along the length direction;

[0049] A clamping block is slidably inserted into the installation groove;

[0050] A strip-shaped slider is fixedly mounted on the bottom surface of the clamping block corresponding to the slide groove, and the strip-shaped slider is slidably mounted in the slide groove;

[0051] A long bolt is transversely screwed to the upper end of the front wall of the clamping block, and the rear end of the long bolt is screwed to the upper end of the inner wall of the installation groove;

[0052] The dial indicator probe is clamped between the clamping block and the inner wall of the mounting groove.

[0053] As a further optimization solution, in order to stably clamp the dial indicator probe and facilitate its measurement, it also includes:

[0054] The dial indicator probe clamping structure comprises:

[0055] A rear arc-shaped clamping groove is transversely arranged in the middle of the inner wall of the mounting groove;

[0056] A front arc-shaped clamping groove, corresponding to a rear arc-shaped clamping groove, is provided on the rear wall of the clamping block;

[0057] The rear arc-shaped clamping groove and the front arc-shaped clamping groove are symmetrically distributed front to back, and the dial indicator probe is clamped at a position between the rear arc-shaped clamping groove and the front arc-shaped clamping groove.

[0058] The present invention provides a bearing ring conical wall thickness precision measuring instrument through improvement, which has the following improvements and advantages compared with the prior art:

[0059] Firstly, the device can measure the wall thickness of the conical surface of the spherical roller thrust bearing by moving a light-weight device while the spherical roller thrust bearing is stationary. During measurement, the measuring force is transmitted to the dial indicator through the measuring piece, and the device is rotated to measure the wall thickness of the conical surface of the spherical roller thrust bearing at the same height. The wall thickness of the conical surface of the spherical roller thrust bearing and the wall thickness fluctuation value are measured by the dial indicator.

[0060] Secondly, the rectangular calibration block is used as the standard block to calibrate the specified height. Different rectangular calibration blocks are designed according to different spherical roller thrust bearing models and clearly marked. Before measuring the wall thickness, it is only necessary to use the corresponding standard block to calibrate the wall thickness height, and then test the tapered wall thickness of the spherical roller thrust bearing. While ensuring the quality of the test, the work efficiency of the test personnel is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 It is a schematic diagram of the structure of the present invention;

[0063] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0064] Figure 3 This is a schematic diagram of the calibration state structure of the rectangular calibration block of the present invention;

[0065] Figure 4 It is a schematic diagram of the structure of the spherical roller thrust bearing in the measurement state of the present invention;

[0066] Figure 5 It is a schematic cross-sectional view of the assembly structure of the position-limiting shielding structure and the positioning member of the measuring member after calibration of the present invention;

[0067] Figure 6 It is a schematic diagram of the structure of the measuring piece of the present invention;

[0068] Figure 7 It is a schematic cross-sectional view of the structure of the dial gauge clamping structure and the dial gauge probe clamping structure of the present invention;

[0069] Figure 8 It is a schematic structural diagram of a first embodiment of a rectangular calibration block of the present invention;

[0070] Fig. 9 It is a schematic structural diagram of a second embodiment of a rectangular calibration block of the present invention;

[0071] Fig.10 It is a schematic structural diagram of the third embodiment of the rectangular calibration block of the present invention.

[0072] Description of reference numerals:

[0073] 1-L-shaped bracket, 2-dividual gauge probe clamping structure, 21-rear arc clamping groove, 22-front arc clamping groove, 3-dividual gauge clamping structure, 31-slideway, 32-strip slider, 33-clamping block, 34-long bolt, 4-dividual gauge, 5-positioning shaft, 6-blocking cover, 61-spring, 62-push plate, 7-measuring piece, 71-strip vertical plate, 72-strip through hole, 73-longitudinal groove, 74-first fixing bolt, 75- Probe, 76-scale groove, 8-rectangular calibration block, 9-limit shielding structure, 91-wedge-shaped slide groove, 92-wedge-shaped slider, 93-column, 94-lateral groove, 95-second fixing bolt, 10-directional axis, 11-front and rear limit structures, 111-limit retaining edge, 112-strip groove, 12-spherical roller thrust bearing, 13-calibrated measuring piece positioning piece, 131-round rod, 132-hexagonal groove, 133-external thread. DETAILED DESCRIPTION

[0074] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as limiting the present invention.

[0076] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] See also Figure 1-10 The present invention provides a technical solution: a bearing ring conical wall thickness precision measuring instrument, comprising:

[0078] An L-shaped bracket 1 is provided with a positioning shaft 5 which is slidably mounted in the transverse part of the L-shaped bracket 1 along the length direction, and one end of the positioning shaft 5 which is away from the longitudinal part of the L-shaped bracket 1 is elastically connected to the outer wall on the same side of the L-shaped bracket 1, and the positioning shaft 5 and the measuring member 7 are retracted by pulling them back through the elastic connection, so that the upper end of the measuring member 7 abuts against the detection end of the dial indicator 4, and the detection part of the lower end of the measuring member 7 fits the slope of the rectangular calibration block 8;

[0079] A measuring member 7, which is detachably fixedly sleeved on one end of the positioning shaft 5 close to the longitudinal portion of the L-shaped bracket 1;

[0080] The longitudinal portion of the L-shaped bracket 1 is clamped with a dial indicator 4;

[0081] A rectangular calibration block 8, one side of which is provided with a slope;

[0082] The upper edge of the slope of the rectangular calibration block 8 is in contact with the lower edge of the outer side surface of the longitudinal portion of the L-shaped bracket 1, and the top surface of the rectangular calibration block 8 is in contact with the bottom surface of the transverse portion of the L-shaped bracket 1;

[0083] The upper end of the measuring piece 7 is against the detection end of the dial gauge 4, and the detection part of the lower end of the measuring piece 7 is in contact with the slope of the rectangular calibration block 8 to calibrate the reading of the dial gauge 4;

[0084] After the rectangular calibration block 8 is removed, the position of the measuring piece 7 is kept unchanged, and the operation of keeping the position of the measuring piece 7 unchanged is completed with manual assistance;

[0085] The spherical roller thrust bearing 12 replaces the rectangular calibration block 8, and the wall thickness of the conical surface of the spherical roller thrust bearing 12 at the height of the slope of the rectangular calibration block 8 is measured by the calibrated measuring piece 7.

[0086] The rectangular calibration block 8 is used as a standard block to calibrate the size of the specified height. Different rectangular calibration blocks 8 are designed according to different models of spherical roller thrust bearings 12, and are clearly marked. Before measuring the wall thickness, it is only necessary to use the corresponding standard block to calibrate the wall thickness height, and then detect the tapered wall thickness of the spherical roller thrust bearing 12. While ensuring the detection quality, the work efficiency of the detection personnel is greatly improved.

[0087] like Figure 8-10 , three embodiments are given in which the slope angles of the rectangular calibration block 8 are 45 degrees, 60 degrees and 30 degrees respectively. The three embodiments are only for illustration. According to actual needs, the rectangular calibration block 8 can be of different lengths and its slope can be of different angles.

[0088] In the first embodiment, Figure 8 As shown, the slope angle of the rectangular calibration block 8 is 45 degrees;

[0089] In the second embodiment, Fig. 9 As shown, the slope angle of the rectangular calibration block 8 is 60 degrees;

[0090] In the third embodiment, Fig.10 As shown, the slope angle of the rectangular calibration block 8 is 30 degrees.

[0091] As a further optimization scheme, in order to realize the elastic connection between the end of the positioning shaft 5 and the outer wall on the same side of the L-shaped bracket 1 by using the spring 61 as an elastic member, the positioning shaft 5 and the measuring member 7 are pulled back by the spring 61, so that the measuring member 7 abuts against the detection end of the dial indicator 4 and the slope of the rectangular calibration block 8 and the conical surface of the spherical roller thrust bearing 12, and a cavity is opened in the transverse part of the L-shaped bracket 1, and the cavity is designed to be away from the opening at one end of the longitudinal part of the L-shaped bracket 1;

[0092] The open end of the transverse portion of the L-shaped bracket 1 is fixedly connected to a plug cover 6;

[0093] Springs 61 are transversely fixedly connected to the front and rear sides of the inner wall of the plug cover 6, and push plates 62 are fixedly connected to one end of the springs 61 on both sides close to the transverse part of the L-shaped bracket 1;

[0094] The push plate 62 is fixedly connected to one end of the positioning shaft 5 away from the longitudinal portion of the L-shaped bracket 1;

[0095] The push plate 62 is slidably assembled in the longitudinal opening of the L-shaped bracket 1;

[0096] The spring 61 pulls the push plate 62 and the positioning shaft 5 to drive the measuring member 7 to retract;

[0097] A calibrated measuring piece positioning member 13 is screwed onto one side of the blocking cover 6 away from the transverse portion of the L-shaped bracket 1 , and one end of the calibrated measuring piece positioning member 13 located inside the blocking cover 6 abuts against the outer wall of the push plate 62 .

[0098] As a further optimization solution, in order to block and locate the position of the measuring member 7 after calibration to prevent the measuring member 7 from displacement, the measuring member positioning member 13 after calibration includes:

[0099] The round rod 131 has an outer thread 133 formed on the outer wall away from the positioning shaft 5;

[0100] The external thread 133 is screwed into the reserved screw hole at the end of the plug cover 6;

[0101] The end surface of the round rod 131 located outside the plug cover 6 is provided with a hexagonal groove 132, and the hexagonal groove 132 is adjusted with an existing hexagonal wrench;

[0102] One end of the round rod 131 located in the blocking cover 6 abuts against the outer wall of the push plate 62. When in use, the round rod 131 is rotated by a hexagonal wrench so that the external thread 133 is screwed into the reserved screw hole. After calibration, the screwed-in round rod 131 is used to push the push plate 62, and the push plate 62 is used to support the positioning shaft 5, thereby avoiding displacement of the measuring part 7. When the device is placed on the conical surface of the spherical roller thrust bearing 12 to measure the wall thickness, the reset round rod 131 is rotated to release the limit on the measuring part 7.

[0103] As a further optimization scheme, in order to limit the front and rear positions of the rectangular calibration block 8 and prevent the rectangular calibration block 8 from tilting in the front and rear positions, a front and rear limiting structure 11 is installed between the bottom surface of the L-shaped bracket 1 and the upper end of the rectangular calibration block 8, which includes:

[0104] There are two limit retaining edges 111, which are parallelly distributed in the front and rear;

[0105] Two limiting retaining edges 111 are respectively fixedly assembled on the front and rear edges of the bottom of the L-shaped bracket 1;

[0106] A strip groove 112 is provided at the same side edge of the upper end of the rectangular calibration block 8 corresponding to the limit retaining edge 111;

[0107] The limiting retaining edge 111 is inserted into the strip-shaped groove 112 on the same side. When in use, the upper end of the rectangular calibration block 8 is inserted from the side where the longitudinal portion of the L-shaped bracket 1 is located.

[0108] As a further optimization scheme, in order to limit and block the spherical roller thrust bearing 12 or the rectangular calibration block 8 and locate the placement thereof, it also includes:

[0109] The position limiting shielding structure 9 comprises:

[0110] A wedge-shaped slide groove 91 is transversely opened in the middle of the bottom surface of the L-shaped bracket 1;

[0111] A wedge-shaped slider 92 is slidably engaged in the wedge-shaped slide groove 91, and a column 93 is fixedly mounted on the lower end of the wedge-shaped slider 92;

[0112] A transverse groove 94 is provided at the lower end of the front and rear side walls of the transverse portion of the L-shaped bracket 1 corresponding to the wedge-shaped slide groove 91, and the inner end of the transverse groove 94 is connected to the wedge-shaped slide groove 91;

[0113] A second fixing bolt 95 is slidably inserted into the transverse groove 94, and the end of the second fixing bolt 95 is screwed into a reserved screw hole on the outer wall of the wedge-shaped sliding block 92;

[0114] The column 93 abuts against the outer wall of the spherical roller thrust bearing 12 .

[0115] When in use, after loosening the second fixing bolt 95, the wedge-shaped slider 92 drives the column 93 to slide horizontally in the wedge-shaped slide groove 91. After sliding to the appropriate position, the second fixing bolt 95 is tightened again to limit and fix it. The column 93 is pressed against the outer wall of the spherical roller thrust bearing 12 or the rectangular calibration block 8 for blocking and positioning, so that the spherical roller thrust bearing 12 or the rectangular calibration block 8 is placed in the correct measuring position. Since the column 93 can adjust the fixed position laterally, it can be suitable for spherical roller thrust bearings 12 and matching rectangular calibration blocks 8 of different sizes.

[0116] As a further optimization solution, in order to further support and guide the measuring member 7, it also includes:

[0117] An orientation shaft 10, which transversely passes through the middle of the lower end of the longitudinal portion of the L-shaped bracket 1;

[0118] The orienting shaft 10 is detachably fixed to the measuring piece 7 at one end away from the L-shaped bracket 1; the orienting shaft 10 is lateral sliding in the longitudinal portion of the L-shaped bracket 1 to support and guide the measuring piece 7; the fixed connection relationship between the measuring piece 7 and the orienting shaft 10 is the same as the fixed connection relationship between the measuring piece 7 and the positioning shaft 5, so that the measuring piece 7 can be laterally adjusted to a fixed position on the orienting shaft 10.

[0119] As a further optimization solution, in order to transmit the force exerted by the measuring needle 75 against the conical surface of the spherical roller thrust bearing 12 to the dial gauge 4, and measure the conical surface thickness of the spherical roller thrust bearing 12 using the dial gauge 4, the measuring member 7 includes:

[0120] A strip-shaped vertical plate 71, wherein a strip-shaped through hole 72 is longitudinally opened in the middle thereof;

[0121] A longitudinal groove 73 is formed on the front wall of the strip-shaped vertical plate 71 corresponding to the strip-shaped through hole 72, and the rear end of the longitudinal groove 73 is connected to the strip-shaped through hole 72;

[0122] One end of the positioning shaft 5 away from the L-shaped bracket 1 is inserted into the bar-shaped through hole 72;

[0123] A first fixing bolt 74 is threadedly connected in the longitudinal groove 73, and the end of the first fixing bolt 74 abuts against the outer wall of the end of the positioning shaft 5 away from the L-shaped bracket 1;

[0124] Both sides of the inner wall of the longitudinal groove 73 are provided with inclined grooves matching the first fixing bolt 74 to facilitate the threaded connection of the first fixing bolt 74;

[0125] A measuring needle 75 is vertically fixedly mounted on the lower end of the strip vertical plate 71 close to the L-shaped bracket 1 , and the measuring needle 75 is the lower end detection part of the measuring member 7 .

[0126] After the first fixing bolt 74 is screwed down, the positioning shaft 5 can slide up and down or horizontally in the strip through hole 72 of the strip vertical plate 71. After adjusting to the appropriate position, the first fixing bolt 74 is screwed into the longitudinal groove 73 again, so that the end of the first fixing bolt 74 rests on the outer wall of the positioning shaft 5, so that the measuring piece 7 can cooperate with the rectangular calibration block 8 to measure the wall thickness of the conical surface of the spherical roller thrust bearing 12 at different heights.

[0127] As a further optimization solution, in order to accurately control the lifting height of the strip vertical plate 71 and facilitate the detection of the wall thickness of the conical surface of the spherical roller thrust bearing 12 at different heights, a scale groove 76 is opened along the length direction at the edge of the strip through hole 72.

[0128] As a further optimization scheme, in order to stably clamp the dial gauge 4 and facilitate its measurement, the upper end of the longitudinal portion of the L-shaped bracket 1 is equipped with a dial gauge clamping structure 3, which includes:

[0129] A mounting groove is provided at the upper end of the front wall of the longitudinal portion of the L-shaped bracket 1;

[0130] A slide groove 31 is provided on the bottom surface of the installation groove along the length direction;

[0131] A clamping block 33 is slidably inserted into the installation groove;

[0132] A strip-shaped slider 32 is fixedly mounted on the bottom surface of the clamping block 33 corresponding to the slide groove 31, and the strip-shaped slider 32 is slidably mounted in the slide groove 31;

[0133] A long bolt 34 is transversely screwed to the upper end of the front wall of the clamping block 33, and the rear end of the long bolt 34 is screwed to the upper end of the inner wall of the installation groove;

[0134] The probe of the dial indicator 4 is clamped between the clamping block 33 and the inner wall of the mounting groove.

[0135] The clamping block 33 is fixed in the installation groove by the long bolt 34, and the lower end of the clamping block 33 slides in the slide groove 31 opened along the length direction of the bottom surface of the installation groove through the strip slider 32, so that the distance between the clamping block 33 and the inner wall of the installation groove is adjustable. By adjusting the tightness of the long bolt 34, it is convenient to clamp and disassemble the dial indicator 4.

[0136] As a further optimization solution, in order to stably clamp the probe of the dial indicator 4 and facilitate its measurement, it also includes:

[0137] The dial indicator probe clamping structure 2 comprises:

[0138] A rear arc-shaped clamping groove 21 is transversely opened in the middle of the inner wall of the mounting groove;

[0139] The front arc-shaped clamping groove 22, which corresponds to the rear arc-shaped clamping groove 21, is formed on the rear wall of the clamping block 33;

[0140] The rear arc-shaped clamping groove 21 and the front arc-shaped clamping groove 22 are symmetrically distributed front to back, and the probe of the dial indicator 4 is clamped at a position between the rear arc-shaped clamping groove 21 and the front arc-shaped clamping groove 22 .

[0141] The rear arc-shaped clamping groove 21 and the front arc-shaped clamping groove 22 are symmetrically distributed front to back, and the probe of the dial indicator 4 is clamped between the rear arc-shaped clamping groove 21 and the front arc-shaped clamping groove 22. A circular clamping cavity is formed between the rear arc-shaped clamping groove 21 and the front arc-shaped clamping groove 22, which is suitable for stably clamping the probe of the dial indicator 4.

[0142] Working principle:

[0143] An L-shaped bracket 1 is provided with a positioning shaft 5 which is slidably mounted in the transverse part of the L-shaped bracket 1 along the length direction, and one end of the positioning shaft 5 which is away from the longitudinal part of the L-shaped bracket 1 is elastically connected to the outer wall on the same side of the L-shaped bracket 1, and the positioning shaft 5 and the measuring member 7 are retracted by pulling them back through the elastic connection, so that the upper end of the measuring member 7 abuts against the detection end of the dial indicator 4, and the detection part of the lower end of the measuring member 7 fits the slope of the rectangular calibration block 8;

[0144] The upper edge of the slope of the rectangular calibration block 8 fits with the lower edge of the outer side surface of the longitudinal part of the L-shaped bracket 1, and the top surface of the rectangular calibration block 8 fits with the bottom surface of the transverse part of the L-shaped bracket 1. The upper end of the measuring piece 7 abuts against the detection end of the dial indicator 4, and the detection part of the lower end of the measuring piece 7 fits with the slope of the rectangular calibration block 8 to calibrate the reading of the dial indicator 4. After the rectangular calibration block 8 is removed, the position of the measuring piece 7 remains unchanged. The operation of keeping the position of the measuring piece 7 unchanged is completed with manual assistance. The spherical roller thrust bearing 12 replaces the position of the rectangular calibration block 8 through the moving device, and the wall thickness of the spherical roller thrust bearing 12 at the height of the slope of the rectangular calibration block 8 corresponding to the conical surface of the calibrated measuring piece 7 is measured;

[0145] The rectangular calibration block 8 is used as a standard block to calibrate the size of the specified height. Different rectangular calibration blocks 8 are designed according to different models of spherical roller thrust bearings 12, and are clearly marked. Before measuring the wall thickness, it is only necessary to use the corresponding standard block to calibrate the wall thickness height, and then detect the tapered wall thickness of the spherical roller thrust bearing 12. While ensuring the detection quality, the work efficiency of the detection personnel is greatly improved.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A precision measuring instrument for the cone wall thickness of a bearing ring, characterized in that: include: An L-shaped bracket (1), wherein a positioning shaft (5) is slidably mounted in the transverse portion of the L-shaped bracket (1) along the length direction, and an end of the positioning shaft (5) away from the longitudinal portion of the L-shaped bracket (1) is elastically connected to the outer wall on the same side of the L-shaped bracket (1); A measuring piece (7) which is detachably fixedly sleeved on one end of the longitudinal portion of the positioning shaft (5) close to the L-shaped bracket (1); The longitudinal portion of the L-shaped bracket (1) is clamped with a dial indicator (4); A rectangular calibration block (8) having a sloped surface on one side; The upper edge of the slope of the rectangular calibration block (8) fits with the lower edge of the outer side surface of the longitudinal portion of the L-shaped bracket (1), and the top surface of the rectangular calibration block (8) fits with the bottom surface of the transverse portion of the L-shaped bracket (1); The upper end of the measuring piece (7) abuts against the detection end of the dial gauge (4), and the detection portion of the lower end of the measuring piece (7) fits against the slope of the rectangular calibration block (8) to calibrate the reading of the dial gauge (4); After the rectangular calibration block (8) is removed, the position of the measuring piece (7) remains unchanged; A spherical roller thrust bearing (12) replaces the rectangular calibration block (8) and measures the wall thickness of the conical surface of the spherical roller thrust bearing (12) at the height of the slope of the rectangular calibration block (8) using a calibrated measuring piece (7); A cavity is provided in the transverse portion of the L-shaped bracket (1), and the cavity is designed to be away from the opening at one end of the longitudinal portion of the L-shaped bracket (1); The open end of the transverse portion of the L-shaped bracket (1) is fixedly connected to a blocking cover (6); The inner wall of the blocking cover (6) is laterally fixedly connected to springs (61) on both sides, and one end of the springs (61) on both sides close to the transverse part of the L-shaped bracket (1) is fixedly connected to a push plate (62); The push plate (62) is fixedly connected to one end of the positioning shaft (5) away from the longitudinal portion of the L-shaped bracket (1); The push plate (62) is slidably mounted in the longitudinal opening of the L-shaped bracket (1); A calibrated measuring piece positioning piece (13) is screwed to one side of the blocking cover (6) away from the transverse portion of the L-shaped bracket (1), and one end of the calibrated measuring piece positioning piece (13) located inside the blocking cover (6) abuts against the outer wall of the push plate (62); The calibrated measuring piece positioning piece (13) comprises: A round rod (131) having an outer wall with an external thread (133) on a side away from the positioning shaft (5); The external thread (133) is screwed into a reserved screw hole at the end of the plug cover (6); The end surface of the round rod (131) located outside the blocking cover (6) is provided with a hexagonal groove (132); One end of the round rod (131) located inside the blocking cover (6) abuts against the outer wall of the push plate (62); Also includes: The position limiting shielding structure (9) comprises: A wedge-shaped slide groove (91) is transversely arranged in the middle of the bottom surface of the L-shaped bracket (1); A wedge-shaped slider (92) is slidably engaged in the wedge-shaped slide groove (91), and a column (93) is fixedly mounted on the lower end of the wedge-shaped slider (92); The lower ends of the front and rear side walls of the transverse portion of the L-shaped bracket (1) are provided with transverse grooves (94) corresponding to the wedge-shaped slide grooves (91), and the inner ends of the transverse grooves (94) are connected to the wedge-shaped slide grooves (91); A second fixing bolt (95) is slidably inserted into the transverse groove (94), and a distal end of the second fixing bolt (95) is screwed into a reserved screw hole on the outer wall of the wedge-shaped sliding block (92); The column (93) abuts against the outer wall of the spherical roller thrust bearing (12).

2. The bearing ring conical wall thickness precision measuring instrument according to claim 1 is characterized in that: A front and rear limiting structure (11) is installed between the bottom surface of the L-shaped bracket (1) and the upper end of the rectangular calibration block (8), and comprises: Two limiting retaining edges (111) are arranged parallel to each other in the front and rear directions; The two limiting retaining edges (111) are respectively fixedly mounted on the front and rear edges of the bottom of the L-shaped bracket (1); The upper end of the rectangular calibration block (8) is provided with a strip-shaped groove (112) at the same side edge thereof corresponding to the limit retaining edge (111); The limiting retaining edge (111) is inserted into the strip-shaped groove (112) on the same side.

3. The bearing ring conical wall thickness precision measuring instrument according to claim 1 is characterized in that: Also includes: An orientation shaft (10) which transversely passes through the middle of the lower end of the longitudinal portion of the L-shaped bracket (1); The end of the orientation shaft (10) away from the L-shaped bracket (1) is detachably fixed to the measuring piece (7).

4. The bearing ring conical wall thickness precision measuring instrument according to claim 1 is characterized in that: The measuring member (7) comprises: A strip-shaped vertical plate (71) having a strip-shaped through hole (72) longitudinally opened in the middle thereof; The front wall of the strip-shaped vertical plate (71) is provided with a longitudinal groove (73) corresponding to the strip-shaped through hole (72), and the rear end of the longitudinal groove (73) is connected to the strip-shaped through hole (72); The end of the positioning shaft (5) away from the L-shaped bracket (1) is inserted into the strip-shaped through hole (72); A first fixing bolt (74) is threadedly connected in the longitudinal groove (73), and the end of the first fixing bolt (74) abuts against the outer wall of the end of the positioning shaft (5) away from the L-shaped bracket (1); A measuring needle (75) is vertically fixedly mounted on the lower end of the strip-shaped vertical plate (71) close to the L-shaped bracket (1), and the measuring needle (75) is the lower end detection part of the measuring member (7).

5. The bearing ring conical wall thickness precision measuring instrument according to claim 4 is characterized in that: A scale groove (76) is provided at the edge of the strip-shaped through hole (72) along the length direction.

6. The bearing ring conical wall thickness precision measuring instrument according to claim 1, characterized in that: The upper end of the longitudinal portion of the L-shaped bracket (1) is equipped with a dial indicator clamping structure (3), which comprises: A mounting groove is provided at an upper end of a front wall of a longitudinal portion of the L-shaped bracket (1); The bottom surface of the installation groove is provided with a slide groove (31) along the length direction; A clamping block (33) is slidably inserted into the installation groove; A strip-shaped slider (32) is fixedly mounted on the bottom surface of the clamping block (33) corresponding to the slide groove (31), and the strip-shaped slider (32) is slidably mounted in the slide groove (31); A long bolt (34) is transversely screwed to the upper end of the front wall of the clamping block (33), and the rear end of the long bolt (34) is screwed to the upper end of the inner wall of the installation groove; The measuring head of the dial indicator (4) is clamped between the clamping block (33) and the inner wall of the mounting groove.

7. The bearing ring conical wall thickness precision measuring instrument according to claim 6, characterized in that: Also includes: The dial indicator probe clamping structure (2) comprises: A rear arc-shaped clamping groove (21) is transversely arranged in the middle of the inner wall of the mounting groove; A front arc-shaped clamping groove (22) corresponding to the rear arc-shaped clamping groove (21) is formed on the rear wall of the clamping block (33); The rear arc-shaped clamping groove (21) and the front arc-shaped clamping groove (22) are symmetrically distributed front to back, and the dial indicator (4) probe is clamped at a position between the rear arc-shaped clamping groove (21) and the front arc-shaped clamping groove (22).

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