CN109900188B - Comprehensive measuring instrument with double measuring meters and measuring method - Google Patents
Comprehensive measuring instrument with double measuring meters and measuring method Download PDFInfo
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- CN109900188B CN109900188B CN201910254088.2A CN201910254088A CN109900188B CN 109900188 B CN109900188 B CN 109900188B CN 201910254088 A CN201910254088 A CN 201910254088A CN 109900188 B CN109900188 B CN 109900188B
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Abstract
An integrated measuring instrument with a double measuring instrument and a measuring method thereof comprise: the device comprises a base, a sliding rod, a support, a bracket, a supporting arm and a measuring rod, wherein the sliding rod is horizontally arranged on the base, the support is vertically fixed at one end of the base, and the supporting arm is vertically arranged on the support; an upward bent part is arranged at one end of the supporting arm, which is far away from the support, the measuring rod is connected with the bent part through a pin, a supporting rod is arranged at one end of the measuring rod, which is far away from the support, a sliding sheet is fixed at the top of the rod, and a measuring point is arranged at one end of the measuring rod, which is near to the support; a first universal rod is arranged on the sliding rod close to the measuring point, and a first dial indicator is arranged at the top of the universal rod; a sliding rail is machined on one side edge of the base along the length direction of the base, a fixable sliding seat is arranged on the sliding rail, a second universal rod is mounted on the sliding seat, and a second dial indicator is mounted at the top of the second universal rod; the invention is used for simultaneously measuring the inner wall error and the verticality of the unsmooth workpiece, the measurement precision can reach 0.01mm, the operation is convenient, and the invention can adapt to various workpieces.
Description
Technical Field
The invention belongs to the technical field of measuring equipment, and particularly relates to a comprehensive measuring instrument with double measuring meters and a measuring method.
Background
In the processing of part of pipe fitting, to the precision requirement extremely high, take aviation bomb as an example, in the processing production of aviation bomb, to the casing machining precision requirement extremely high of part aviation bomb to guarantee that the bomb can operate smoothly when passing in and out the magazine, throwing in, launching or exploding, the machining precision error of requirement casing is in the millimeter level.
In the processing of casing inner chamber, can process a plurality of lines on shells inner wall, divide shells inner wall surface into a plurality of rules or anomalous diamond-shaped block, be "pineapple skin" form on making shells inner wall, the even of line degree of depth is guaranteed to guarantee the crushing effect of casing when the explosion, increase the lethality.
Particularly, for an emission type aerial bomb, the wall thickness error of any circumferential section on the bomb shell body of the aerial bomb is required to be not more than 1mm, and general photoelectric detection equipment, ultrasonic detection equipment and the like cannot be finished due to the nonuniformity of the inner wall surface.
In addition, in the processing of the shells of the aviation bombs, the verticality is also highly required, and different instruments are required to be used for testing, which is relatively troublesome.
In view of this, it is necessary to provide a measuring instrument capable of comprehensively measuring the inner wall error and the verticality, and having convenient operation and high measurement accuracy.
Disclosure of Invention
The invention aims to provide a comprehensive measuring instrument which is provided with double measuring meters and can simultaneously measure the error and the verticality of the inner wall of a workpiece, and the precision can reach 0.01 mm.
The invention also aims to provide the comprehensive measuring instrument with the double measuring meters, which is convenient to operate and can adapt to the measurement of workpieces with various pipe diameters.
In order to solve the technical problem, the invention discloses a comprehensive measuring instrument with double measuring meters, which is used for high-precision measurement of an inner cavity of a workpiece and comprises the following components: the measuring device comprises a base, a sliding rod, a bracket, a support arm and a measuring rod, wherein the base is a rectangular steel plate, a long sliding groove is processed on the base along the length direction, and the sliding rod is arranged in the long sliding groove and is adaptive to the long sliding groove;
the support is vertically fixed at one end of the sliding rod, and the supporting arm is vertically arranged on the support in a height-adjustable manner, so that the supporting arm and the base are arranged in parallel;
an upward bent part is arranged at one end of the supporting arm, which is far away from the support, and the measuring rod is connected with the bent part through a pin, so that the measuring rod can rotate along a pin connecting point;
a limiting rod is vertically arranged in the middle of one end, close to the support, of the base, a first bearing is horizontally arranged at the top of the limiting rod, and the first bearing is coaxial with the limiting rod;
a support rod is arranged at the upper part of one end, far away from the support, of the measuring rod, a sliding sheet is fixed at the top of the support rod, a measuring point is arranged at one end, near to the support, of the measuring rod, and the measuring point is a boss;
a first universal rod is arranged on the sliding rod close to the measuring point, and a first dial indicator is mounted at the top of the universal rod;
a sliding rail is machined on one side edge of the base along the length direction of the base, a fixable sliding seat is arranged on the sliding rail, a second universal rod is mounted on the sliding seat, and a second dial indicator is mounted at the top of the second universal rod;
an elastic device is arranged between the supporting arm and the measuring rod and used for keeping the sliding sheet in a tilting state, so that the upper end of the sliding sheet can be always attached to the inner cavity wall of the workpiece during detection;
the surface of the base is provided with a first sliding groove group and a second sliding groove group which are arranged in front and back along the length direction of the base; the first sliding chute group is arranged at one side close to the bracket, and the first sliding chute group and the second sliding chute group respectively comprise a pair of short sliding chutes; each pair of short chutes is symmetrically arranged at two sides of the center line of the base;
the bracket comprises a first bearing sliding block and a second bearing sliding block, and the bottoms of the first bearing sliding block and the second bearing sliding block are provided with bulges matched with the first sliding groove group and the second sliding groove group;
the first bearing sliding block slides along the first sliding chute group, the second bearing sliding block slides along the second sliding chute group, a pair of stand columns are respectively arranged on the first bearing sliding block and the second bearing sliding block, and the stand columns are respectively symmetrically arranged at two ends of the first bearing sliding block and the second bearing sliding block; the top of each upright post is provided with a second bearing, and the second bearing is perpendicular to the base and rotates by taking the length direction parallel to the base as an axis;
the bottom of the sliding chute of the second sliding chute group is an inclined plane, and one end of the inclined plane close to the bracket is a low point; scales are marked on the edges of the second sliding chute group, and the scales mark the height of the inclined plane at the position where the scales are located; the inclined plane is a plane or a multi-gradient inclined plane;
matched anti-skid lines are arranged on the inclined plane and the bulges of the second sliding groove group;
and a pulley is arranged at the bottom of one end of the sliding rod close to the bracket.
Preferably, the long sliding groove is arranged at the upper part, the middle part or the bottom part of the base, the length of the sliding rod is greater than that of the workpiece to be detected, and the maximum sliding stroke of the sliding rod in the long sliding groove is not less than that of the workpiece to be detected.
Preferably, a limiting ring is mounted at one end of the supporting arm close to the support, and the end part of the measuring rod extends into the limiting ring.
Preferably, the base is provided with an adjusting knob near the long sliding groove, an adjusting end of the adjusting knob is in contact with the sliding rod, and a damping sheet is mounted on the adjusting end, so that the sliding of the sliding rod in the long sliding groove is easy to control manually.
Preferably, the distance between each pair of the upright posts is smaller than the diameter of the workpiece, and the height of each upright post is matched with the size of the workpiece, so that the workpiece can rotate after being placed on the second bearing.
Preferably, when the second load-bearing slider is at the lowest position in the second slider group, all the second bearings have the same height.
Preferably, the bending part is arranged at a midpoint between the measuring point and the sliding piece.
Preferably, the top of the sliding sheet is a convex arc surface, and the curvature of the arc surface is greater than that of the inner cavity of the workpiece.
A measurement method for an integrated meter having a dual meter, comprising:
1) measurement of inner diameter error:
s1, checking before measurement: separating a contact of the first dial indicator from a measuring point of the measuring rod, and checking whether the elasticity of the elastic device, the rotation of each bearing and the rotation of the measuring rod are normal or not;
s2, horizontally placing a workpiece: when the outer diameters of the workpieces are consistent or locally consistent, the second bearing slide block is adjusted to the lowest position, and the position of the first bearing slide block is adjusted, so that the workpieces can be horizontally and stably placed on the bracket;
when the outer diameters of the workpieces are inconsistent, the workpieces are placed on the bracket, the side with the larger outer diameter of the workpieces is placed on the first bearing slide block, the difference value of the outer diameters of the workpieces near the positions of the first bearing slide block and the second bearing slide block is measured, and the height of the second bearing slide block is adjusted within a certain range according to the difference value, so that the workpieces are placed horizontally;
s3, adjusting: the slide sheet is contacted with the inner cavity wall of the workpiece, then a contact of a first dial indicator is contacted with a measuring point of a measuring rod, and the first dial indicator is zeroed; pushing the slide bar to move the slide sheet of the measuring bar to a required measuring position, adjusting the adjusting knob, and fixing or pushing the slide bar at a constant speed for measurement;
s4, measurement: pushing the workpiece to automatically transmit for 360 degrees, observing the first dial indicator degree, wherein the difference value of the maximum reading and the minimum reading is the error of the end face to be measured, calculating an error value, and judging whether the inner diameter error is qualified or not according to the error value;
2) and (3) measuring the verticality:
s10, installation: the workpiece is horizontally placed on the carriage in accordance with the method of S2, with one end of the workpiece abutting against the first bearing,
s20, adjusting: the contact of the first or second dial indicator is contacted with the end surface to be measured, the first or second dial indicator is zero-set,
s30, measurement: rotating the workpiece for 360 degrees, observing the jumping amount of the reading of the first dial indicator or the second dial indicator, wherein the difference value of the maximum reading and the minimum reading is the error of the end surface to be measured, calculating an error value, and judging whether the verticality is qualified or not according to the error value;
wherein the measurement of the inner diameter error and the measurement of the perpendicularity can be performed simultaneously.
Preferably, in S30, one end of the workpiece is always kept in contact with the first bearing during measurement.
The comprehensive measuring instrument with the double measuring meters at least has the following advantages:
1. simple structure, convenient maintenance, and the highest internal diameter error measurement precision can reach 0.01 mm.
2. Compared with photoelectric detection equipment and ultrasonic detection equipment, although the detection efficiency is low, the detection precision is high for detecting the inner diameter error and the like of a workpiece with a non-smooth inner wall, and common photoelectric detection equipment and common ultrasonic detection equipment cannot be used for such tasks.
3. The method has the advantages of simple measurement operation and good fault tolerance, and can be used for testing, sampling inspection and full inspection of the inner cavity of the workpiece.
4. During measurement, the slide rod is moved to conveniently measure different positions of the workpiece, the workpiece does not need to be moved horizontally, a single person can finish measurement operation, labor intensity is reduced, and safety problems possibly caused by horizontal movement of the workpiece are reduced.
5. The height of the second bearing slide block is adjustable, so that the invention can obtain accurate measurement results for workpieces with inconsistent outer diameters.
6. The two dial indicators can work simultaneously and are respectively used for measuring the inner diameter error and the verticality of the workpiece, so that the comprehensive measurement performance is better, and the detection efficiency is improved.
7. The method can be suitable for measuring the inner diameters of workpieces of various models.
Drawings
Fig. 1 is a schematic structural diagram of an integrated measuring instrument with a dual measuring meter.
Fig. 2 is a schematic side view of an integrated measuring instrument with a dual measuring meter (with a universal rod and a dial indicator installed).
Fig. 3 is a schematic view of a chute bottom structure of a second chute group.
Fig. 4 is a schematic view of another chute bottom structure of the second chute group.
The reference numbers in the figures are: 1-a base, 110-a sliding rail, 120-a sliding seat, 121-a second universal rod, 122-a second dial indicator, 130-a first sliding groove group, 140-a second sliding groove group, 141-an inclined plane, 150-an adjusting knob, 2-a sliding rod, 210-a first universal rod, 211-a first dial indicator, 3-a support, 4-a supporting arm, 401-a bending part and 5-a measuring rod; 501-supporting rod, 502-sliding piece, 503-measuring point, 6-long sliding groove, 7-bracket, 710-first bearing sliding block, 720-second bearing sliding block, 730-bulge, 8-limiting rod, 801-first bearing, 9-upright column, 901-second bearing, 10-elastic device and 11-pulley.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
As shown in fig. 1 to 3, an integrated measuring instrument with a dual measuring meter for high-precision measurement of a cavity of a workpiece includes: the measuring device comprises a base 1, a sliding rod 2, a bracket 7, a support 3, a supporting arm 4 and a measuring rod 5, wherein the base is a rectangular steel plate, a long sliding groove 6 is processed on the base 1 along the length direction, and the sliding rod 2 is arranged in the long sliding groove 6 and is adaptive to the long sliding groove;
the support 3 is vertically fixed at one end of the sliding rod 2, and the supporting arm 4 is vertically arranged on the support 3 in a height-adjustable manner, so that the supporting arm 4 is arranged in parallel with the base 1;
an upward bent part 401 is arranged at one end of the supporting arm 4, which is far away from the support 3, and the measuring rod 5 is in pin connection with the bent part 401, so that the measuring rod 5 can rotate along a pin connection point;
a limiting rod 8 is vertically arranged in the middle of one end, close to the support 3, of the base 1, a first bearing 801 is horizontally arranged at the top of the limiting rod, and the first bearing 801 and the limiting rod 8 are coaxial;
a support rod 501 is arranged at the upper part of one end, far away from the support, of the measuring rod 5, a slide sheet 502 is fixed at the top of the support rod, a measuring point 503 is arranged at one end, near the support, of the measuring rod, and the measuring point is a boss;
a first universal rod 210 is arranged at a position, close to the measuring point, on the sliding rod 2, and a first dial indicator 211 is arranged at the top of the universal rod;
a sliding rail 110 is machined on one side edge of the base along the length direction of the base, a fixable sliding seat 120 is arranged on the sliding rail, a second universal rod 121 is installed on the sliding seat, and a second dial indicator 122 is installed at the top of the second universal rod; the precision of the dial indicator is 0.01mm, and the maximum measurement precision of the invention can reach 0.01 mm.
An elastic device 10 is arranged between the supporting arm 4 and the measuring rod 5 and used for keeping the sliding sheet 502 in a tilting state, so that the upper end of the sliding sheet can be always attached to the inner cavity wall of the workpiece during detection; the elastic device is selected from one of a spring, an elastic rope and an elastic pressing sheet, and the spring is preferred in the embodiment.
The surface of the base 1 is provided with a first sliding groove group 130 and a second sliding groove group 140 which are arranged in front and back along the length direction of the base; the first sliding groove group 130 is arranged at one side close to the bracket, and the first sliding groove group 130 and the second sliding groove group 140 respectively comprise a pair of short sliding grooves; each pair of short chutes is symmetrically arranged at two sides of the center line of the base;
the bracket 7 comprises a first bearing slide block 710 and a second bearing slide block 720, and the bottoms of the first bearing slide block 710 and the second bearing slide block 720 are provided with bulges 730 matched with the first sliding groove group 130 and the second sliding groove group 140;
the first bearing sliding block 710 slides along the first sliding groove group 130, the second bearing sliding block 720 slides along the second sliding groove group 140, a pair of upright posts 9 are respectively arranged on the first bearing sliding block and the second bearing sliding block, and the upright posts are respectively symmetrically arranged at two ends of the first bearing sliding block 710 and the second bearing sliding block 720; a second bearing 901 is arranged at the top of each upright column, is perpendicular to the base and rotates by taking the length direction parallel to the base as an axis;
the bottom of the second chute group 140 is an inclined plane 141, and one end of the inclined plane close to the bracket is a low point; scales are marked on the edge of the second sliding groove group 140, and the scales mark the height of the inclined plane at the position where the scales are located; the inclined plane is a plane; the inclined plane can adjust the height of the second bearing sliding block, so that the workpiece can be conveniently and horizontally placed.
The protrusions of the inclined plane 141 and the second sliding groove group 140 are provided with matched anti-skid lines; the anti-slip pattern can prevent the second bearing slide block from sliding relatively in the second slide groove group when a workpiece is placed or measured, so that the safety problem caused by inaccurate measuring result or unstable placement of the workpiece can be prevented; due to the existence of the anti-skid lines, after the workpiece is placed on the bracket, the first bearing slide block 710 and the second bearing slide block 720 can be prevented from sliding again, so that the accuracy of the measuring result is ensured.
And a pulley 11 is arranged at the bottom of one end of the sliding rod 2 close to the bracket. The pulley slides along the flat ground or the external track, plays the role of auxiliary support for the sliding rod, can prevent the abrasion of the sliding rod or the sliding chute, and enables the movement of the sliding rod in the sliding chute to be smoothly carried out.
The long sliding groove 6 is arranged in the middle of the base, the length of the sliding rod 2 is larger than that of the workpiece to be detected, and the maximum sliding stroke of the sliding rod in the long sliding groove is not smaller than that of the workpiece to be detected. During measurement, the workpiece does not need to be horizontally moved, the position of the measuring rod is changed by moving the sliding rod, the measurement of different positions of the workpiece can be conveniently carried out, the measurement operation can be completed by two persons in cooperation or one person, and the labor intensity is reduced. In general, the length of the slide bar is preferably 1.5 to 2 times the length of the workpiece.
And a limiting ring is arranged at one end of the supporting arm 4 close to the support, and the end part of the measuring rod 5 extends into the limiting ring.
The base 1 is provided with an adjusting knob 150 near the long sliding groove, the adjusting end of the adjusting knob is in contact with the sliding rod 2, and a damping sheet is arranged on the adjusting end, so that the sliding of the sliding rod in the long sliding groove is easy to control manually.
The distance between each pair of upright posts 9 is smaller than the diameter of the workpiece a, and the height of the upright posts is adapted to the size of the workpiece, so that the workpiece can rotate after being placed on the second bearing 901. When the workpiece is placed on the second bearing, at least the workpiece is ensured not to rub against the base, so that an operator can easily rotate the workpiece to measure.
When the second load-bearing slider 720 is at the lowest position in the second slot group 140, all the second bearings 901 have the same height. The workpiece can be conveniently horizontally placed when the outer diameters of the workpieces are consistent.
The bending part 401 is disposed at a midpoint between the measuring point 503 and the sliding piece 502. And if the measuring rod does not take the bent part as the midpoint, the measuring data of the dial indicator is multiplied by a corresponding coefficient according to a lever calculation method and then evaluated.
The top of the slip sheet 502 is a convex arc surface, and the curvature of the arc surface is larger than that of the inner cavity of the workpiece, so that the slip sheet can smoothly slide on the inner wall of the workpiece, the influence of a fine groove on the surface of the inner wall of the workpiece on measurement can be filtered, and the phenomenon that the slip sheet is blocked to damage a measuring rod is prevented from occurring.
Example 2
Measurement of inner diameter error:
s1, checking before measurement: separating the contact of the first dial indicator 210 from the measuring point of the measuring rod, and checking whether the elasticity of the elastic device, the rotation of each bearing and the rotation of the measuring rod are normal;
s2, horizontally placing a workpiece: when the outer diameters of the workpieces A are consistent or partially consistent, the second bearing slide block 720 is adjusted to the lowest position, and the position of the first bearing slide block 710 is adjusted, so that the workpieces can be horizontally and stably placed on the bracket 7;
when the outer diameters of the workpieces are not consistent, the workpieces are placed on the bracket, the side with the larger outer diameter of the workpieces is placed on the first bearing slide block 710, the difference value of the outer diameters of the workpieces near the positions of the first bearing slide block and the second bearing slide block is measured, and the height of the second bearing slide block is adjusted within a certain range according to the difference value, so that the workpieces are placed horizontally;
the workpiece is horizontally placed, so that the axis of the workpiece is parallel to the horizontal direction, errors caused by the workpiece are avoided, and the measurement accuracy is improved.
S3, adjusting: the sliding sheet 502 is contacted with the inner cavity wall of the workpiece A, then a contact of a first dial indicator is contacted with a measuring point of a measuring rod, and the first dial indicator is adjusted to zero; pushing the slide bar to move the slide sheet of the measuring bar to a required measuring position, adjusting the adjusting knob 150, and fixing or pushing the slide bar at a constant speed for measurement;
s4, measurement: pushing the workpiece to automatically transmit for 360 degrees, observing the first dial indicator degree, wherein the difference value of the maximum reading and the minimum reading is the error of the end face to be measured, calculating an error value, and judging whether the inner diameter error is qualified or not according to the error value;
example 3
And (3) measuring the verticality:
s10, installation: the workpiece is horizontally placed on the carriage in accordance with the method of S2, with one end of the workpiece abutting against the first bearing,
s20, adjusting: the contact of the first or second dial indicator is contacted with the end surface to be measured, the first or second dial indicator is zero-set,
s30, measurement: rotating the workpiece for 360 degrees, observing the jumping amount of the reading of the first dial indicator or the second dial indicator, wherein the difference value of the maximum reading and the minimum reading is the error of the end surface to be measured, calculating an error value, and judging whether the verticality is qualified or not according to the error value;
wherein the measurement of the inner diameter error and the measurement of the perpendicularity can be performed simultaneously.
In S30, one end of the workpiece is always in contact with the first bearing during measurement, which may result in inaccurate measurement results.
Example 4
As shown in fig. 4, similar to embodiment 1, the difference is that the chute bottom of the second chute group 140 is a multi-gradient slope 141. When the work piece is heavier, and the antiskid line is not enough to prevent that second bearing slider from sliding, the spout bottom adopts many gradients inclined plane to have better bearing and stability.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (10)
1. An integrated measuring instrument with double measuring meters is used for high-precision measurement of an inner cavity of a workpiece and is characterized by comprising the following components: the measuring device comprises a base, a sliding rod, a bracket, a support arm and a measuring rod, wherein the base is a rectangular steel plate, a long sliding groove is processed on the base along the length direction, and the sliding rod is arranged in the long sliding groove and is adaptive to the long sliding groove;
the support is vertically fixed at one end of the sliding rod, and the supporting arm is vertically arranged on the support in a height-adjustable manner, so that the supporting arm and the base are arranged in parallel;
an upward bent part is arranged at one end of the supporting arm, which is far away from the support, and the measuring rod is connected with the bent part through a pin, so that the measuring rod can rotate along a pin connecting point;
a limiting rod is vertically arranged in the middle of one end, close to the support, of the base, a first bearing is horizontally arranged at the top of the limiting rod, and the first bearing is coaxial with the limiting rod;
a support rod is arranged at the upper part of one end, far away from the support, of the measuring rod, a sliding sheet is fixed at the top of the support rod, a measuring point is arranged at one end, near to the support, of the measuring rod, and the measuring point is a boss;
a first universal rod is arranged on the sliding rod close to the measuring point, and a first dial indicator is mounted at the top of the universal rod;
a sliding rail is machined on one side edge of the base along the length direction of the base, a fixable sliding seat is arranged on the sliding rail, a second universal rod is mounted on the sliding seat, and a second dial indicator is mounted at the top of the second universal rod;
an elastic device is arranged between the supporting arm and the measuring rod and used for keeping the sliding sheet in a tilting state, so that the upper end of the sliding sheet can be always attached to the inner cavity wall of the workpiece during detection;
the surface of the base is provided with a first sliding groove group and a second sliding groove group which are arranged in front and back along the length direction of the base; the first sliding chute group is arranged at one side close to the bracket, and the first sliding chute group and the second sliding chute group respectively comprise a pair of short sliding chutes; each pair of short chutes is symmetrically arranged at two sides of the center line of the base;
the bracket comprises a first bearing sliding block and a second bearing sliding block, and the bottoms of the first bearing sliding block and the second bearing sliding block are provided with bulges matched with the first sliding groove group and the second sliding groove group;
the first bearing sliding block slides along the first sliding chute group, the second bearing sliding block slides along the second sliding chute group, a pair of stand columns are respectively arranged on the first bearing sliding block and the second bearing sliding block, and the stand columns are respectively symmetrically arranged at two ends of the first bearing sliding block and the second bearing sliding block; the top of each upright post is provided with a second bearing, and the second bearing is perpendicular to the base and rotates by taking the length direction parallel to the base as an axis;
the bottom of the sliding chute of the second sliding chute group is an inclined plane, and one end of the inclined plane close to the bracket is a low point; scales are marked on the edges of the second sliding chute group, and the scales mark the height of the inclined plane at the position where the scales are located; the inclined plane is a plane or a multi-gradient inclined plane;
matched anti-skid lines are arranged on the inclined plane and the bulges of the second sliding groove group;
and a pulley is arranged at the bottom of one end of the sliding rod close to the bracket.
2. The integrated measuring instrument with two measuring meters as claimed in claim 1, wherein the long slide groove is provided at the upper part, the middle part or the bottom part of the base, the length of the slide groove is greater than the length of the workpiece to be measured, and the maximum sliding stroke of the slide bar in the long slide groove is not less than the length of the workpiece to be measured.
3. The integrated measuring instrument with two measuring meters as set forth in claim 2, wherein a stop ring is installed on the end of the support arm near the stand, and the end of the measuring rod is inserted into the stop ring.
4. The integrated measuring instrument with a dual measuring meter according to claim 3, wherein the base is provided with an adjusting knob near the long sliding groove, an adjusting end of the adjusting knob is in contact with the sliding rod, and a damping plate is mounted on the adjusting end of the adjusting knob, so that the sliding of the sliding rod in the long sliding groove is easily controlled manually.
5. The integrated measuring instrument with double measuring meters as claimed in claim 1, wherein the distance between each pair of the upright posts is smaller than the diameter of the workpiece, and the height of the upright posts is adapted to the size of the workpiece, so that the workpiece can rotate after being placed on the second bearing.
6. The integrated meter of claim 5, wherein the height of all the second bearings is the same when the second load bearing slider is lowest in the second set of sliders.
7. The integrated measuring instrument with a dual measuring meter according to claim 1, wherein the bending portion is provided at a midpoint between the measuring point and the slide piece.
8. The integrated measuring instrument with two measuring meters as claimed in claim 7, wherein the top of the slide is a convex arc surface, and the curvature of the arc surface is larger than that of the inner cavity of the workpiece.
9. A measuring method for the integrated measuring instrument with a dual measuring meter according to claim 1, comprising:
1) measurement of inner diameter error:
s1, checking before measurement: separating a contact of the first dial indicator from a measuring point of the measuring rod, and checking whether the elasticity of the elastic device, the rotation of each bearing and the rotation of the measuring rod are normal or not;
s2, horizontally placing a workpiece: when the outer diameters of the workpieces are consistent or locally consistent, the second bearing slide block is adjusted to the lowest position, and the position of the first bearing slide block is adjusted, so that the workpieces can be horizontally and stably placed on the bracket;
when the outer diameters of the workpieces are inconsistent, the workpieces are placed on the bracket, the side with the larger outer diameter of the workpieces is placed on the first bearing slide block, the difference value of the outer diameters of the workpieces near the positions of the first bearing slide block and the second bearing slide block is measured, and the height of the second bearing slide block is adjusted within a certain range according to the difference value, so that the workpieces are placed horizontally;
s3, adjusting: the slide sheet is contacted with the inner cavity wall of the workpiece, then a contact of a first dial indicator is contacted with a measuring point of a measuring rod, and the first dial indicator is zeroed; pushing the slide bar to move the slide sheet of the measuring bar to a required measuring position, adjusting the adjusting knob, and fixing or pushing the slide bar at a constant speed for measurement;
s4, measurement: pushing the workpiece to automatically transmit for 360 degrees, observing the first dial indicator degree, wherein the difference value of the maximum reading and the minimum reading is the error of the end face to be measured, calculating an error value, and judging whether the inner diameter error is qualified or not according to the error value;
2) and (3) measuring the verticality:
s10, installation: horizontally placing the workpiece on the bracket according to the method of S2, and enabling one end of the workpiece to be pressed against the first bearing;
s20, adjusting: contacting a contact of the first or second dial indicator with the end surface to be measured, and zeroing the first or second dial indicator;
s30, measurement: rotating the workpiece for 360 degrees, observing the jumping amount of the reading of the first dial indicator or the second dial indicator, wherein the difference value of the maximum reading and the minimum reading is the error of the end surface to be measured, calculating an error value, and judging whether the verticality is qualified or not according to the error value;
wherein the measurement of the inner diameter error and the measurement of the perpendicularity can be performed simultaneously.
10. The measuring method according to claim 9, wherein in the S4 and S30, the one end of the workpiece is always kept in contact with the first bearing at the time of measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254088.2A CN109900188B (en) | 2019-04-01 | 2019-04-01 | Comprehensive measuring instrument with double measuring meters and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254088.2A CN109900188B (en) | 2019-04-01 | 2019-04-01 | Comprehensive measuring instrument with double measuring meters and measuring method |
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| Publication Number | Publication Date |
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| CN109900188A CN109900188A (en) | 2019-06-18 |
| CN109900188B true CN109900188B (en) | 2020-11-06 |
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| CN201910254088.2A Active CN109900188B (en) | 2019-04-01 | 2019-04-01 | Comprehensive measuring instrument with double measuring meters and measuring method |
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| CN110657761A (en) * | 2019-09-05 | 2020-01-07 | 人本集团有限公司 | Auxiliary device for observing bearing ring channel |
| CN113483615B (en) * | 2021-06-25 | 2022-09-30 | 东风柳州汽车有限公司 | Auto parts detects structure |
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| US4955227A (en) * | 1987-05-27 | 1990-09-11 | Toyo Garasu Kabushiki Kaisha | Apparatus for inspecting glass bottles |
| JP3296547B2 (en) * | 1998-03-02 | 2002-07-02 | 株式会社ミツトヨ | Detector for surface texture measuring machine |
| JP4062008B2 (en) * | 2002-08-07 | 2008-03-19 | 株式会社東京精密 | Digital measuring head |
| US8171651B2 (en) * | 2008-02-19 | 2012-05-08 | James Williams | Squareness testing instruments and methods of operation thereof |
| CN202304704U (en) * | 2011-10-21 | 2012-07-04 | 上海重型机器厂有限公司 | Lever measuring structure and deep hole diameter measuring device with the same |
| CN102607496B (en) * | 2011-12-20 | 2015-04-22 | 烟台思科博量仪有限公司 | Multi-parameter pneumatic comprehensive measurement device for water pump shell |
| CN103185508A (en) * | 2011-12-31 | 2013-07-03 | 上海和达汽车配件有限公司 | Detection tool used for detecting automobile support plate |
| CN202885750U (en) * | 2012-08-18 | 2013-04-17 | 陈硕 | Tool for measuring perpendicularity of end face to axis of blind hole |
| CN102829703B (en) * | 2012-08-18 | 2015-07-15 | 陈硕 | Measurer for perpendicularity of end face to blind hole axis |
| CN103090765B (en) * | 2013-01-28 | 2016-04-27 | 江苏一汽铸造股份有限公司 | Wind-electricity shaft bearing size and form and position tolerance testing tool and detection method is installed |
| CN104416503A (en) * | 2013-08-31 | 2015-03-18 | 西安志越机电科技有限公司 | Tapered wedge type height adjusting device |
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