CN110836624A - Inner and outer seam allowance measuring tool for disc ring type parts and using method thereof - Google Patents
Inner and outer seam allowance measuring tool for disc ring type parts and using method thereof Download PDFInfo
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- CN110836624A CN110836624A CN201911170359.2A CN201911170359A CN110836624A CN 110836624 A CN110836624 A CN 110836624A CN 201911170359 A CN201911170359 A CN 201911170359A CN 110836624 A CN110836624 A CN 110836624A
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- 238000005259 measurement Methods 0.000 abstract description 11
- 238000003754 machining Methods 0.000 abstract description 7
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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Abstract
The invention discloses a measuring tool for inner and outer rabbets of a disc ring type part and a using method thereof.A positioning block in the axial direction is arranged on the end surface of the rabbets when the measuring tool for the inner rabbets of the disc ring type part is used for measuring the inner rabbets, and a measuring head positioning pin, a radial positioning pin and a radial auxiliary positioning pin are arranged on the inner wall of the rabbets; when the outer spigot is measured, the positioning block is arranged on the end face of the spigot, and the measuring head positioning pin, the radial positioning pin and the radial auxiliary positioning pin are arranged on the outer wall of the spigot. The measuring device has the advantages that repeated adjustment is not needed before use, measurement can be carried out only through once correction, the measuring process is simplified, the machining efficiency is improved, the size of the spigot can be measured only by attaching the positioning block to the end face of the spigot in the using process, and the influence of the working state of an operator on the size precision of a product is avoided. The measuring tool for the spigot of the disc ring part can measure the size of the outer spigot and the size of the inner spigot, achieves multifunctional purposes, and can effectively save resources and space.
Description
Technical Field
The invention relates to the technical field of measuring tools, in particular to a measuring tool for inner and outer rabbets of a disc ring type part and a using method thereof.
Background
The spigot of the disc ring type part is usually used for rigid connection or welding processing, and the processing precision is an important factor influencing the matching quality of the part; usually, under the condition that the size of the part seam allowance is small or the precision requirement is not high, an inner and outer micrometer or a vernier caliper is selected to measure the diameter size of the part seam allowance. However, in some cases, the above conventional gauge cannot measure the size of the spigot due to the limitation of the shape of the jig or the special part, and in actual production, a gauge based on the principle of two-point distance measurement is often used to measure the size of the spigot with a large diameter and a high requirement for machining accuracy. One end of the measuring tool is a positioning device fixedly connected with the measuring tool frame, and the other end of the measuring tool is a measuring device which consists of a spring lever and a universal wheel dial indicator; the measuring tool is matched with a standard part for each detection size according to a conventional comparison measuring method; the measuring standard is calibrated before measurement. In the checking process, the measuring tool is firstly leveled, one end of the positioning device is fixed, one end of the measuring device is moved along a horizontal square until the universal wheel dial indicator shows a maximum inflection point, then the measuring device is fixed along the horizontal direction, and the measuring device is moved along the vertical direction until the universal wheel dial indicator shows a minimum inflection point. The diameter of the standard part is the diameter of the universal wheel, and the universal wheel dial indicator is adjusted to zero. In the same way, the zero-set gauge is used to measure the size of the spigot. Firstly, the measuring tool is leveled, one end of the positioning device is fixed, one end of the measuring device is moved to the universal wheel dial indicator along the horizontal direction to form a maximum inflection point, and then one end of the measuring device is moved to the universal wheel dial indicator along the vertical direction to form a minimum inflection point. At the moment, the difference value between the universal wheel dial indicator and the zero point is the difference value between the size of the spigot and the standard size. And adjusting the cutter compensation according to the value and then processing. However, the above prior art has at least the following disadvantages: (1) the production efficiency is low: the measuring tool needs to be calibrated on the standard part before each measurement, and the measuring tool needs to be adjusted for several times in the measurement process to measure the real size, so that the complex process is supposed to reduce the detection efficiency of the size of the part, and further reduce the machining efficiency of the part. (2) Has certain measurement difficulty: in the measuring process, the maximum inflection point and the minimum inflection point of the universal wheel dial indicator are manually searched, so that the measuring precision in the measuring process can be influenced by hand feeling experience and working state of an operator. The accuracy will fluctuate and is not easy to master. (3) The measuring tool has a single application range: since the measuring tool has only one positioning device, in order to facilitate the use of the measuring tool, the end face of the positioning device, which is in contact with the part, needs to be made into a curved surface matched with the cambered surface of the spigot, and the curved surface is related to the size of the spigot. And due to the structural limitation of the measuring device, one measuring tool can only be suitable for detecting the size of the spigot in a smaller range, which not only wastes the space for storing the measuring tool, but also wastes manufacturing resources.
Disclosure of Invention
In order to solve the technical problems, the invention provides a measuring tool for inner and outer rabbets of a disc ring type part and a using method thereof, and the specific technical scheme is as follows:
a measuring tool for inner and outer rabbets of a disc ring type part comprises a measuring tool frame, an axial positioning block, a measuring head, a radial positioning pin, a radial auxiliary positioning bridge, a universal wheel dial indicator and a compression screw;
the measuring tool frame is a crescent moon plate, and the center line of the crescent moon plate is suitable for a concentric circular arc of the crescent moon plate;
the axial positioning blocks are uniformly distributed on the surface of the measuring tool rack;
the measuring head is an independent device with a positioning pin and consists of a base, a sliding block, a positioning pin and a spring; the base is provided with a linear track which limits the motion track of the sliding block; the sliding block is connected with the measuring head positioning pin and moves together with the measuring head positioning pin;
the base is fixedly connected with the measuring tool frame;
the positioning pin on the measuring head is a cylinder, the bottom end of the positioning pin is hemispherical, and the height of the end surface of the positioning pin is the same as that of the end surface of the radial positioning pin;
the universal wheel dial indicator contact penetrates through the measuring tool frame to be in contact with the surface of the sliding block, and the universal wheel dial indicator is fixed on the measuring tool frame through the compression screw;
the radial positioning pin is arranged on a central line of the lower part of the measuring tool frame;
the radial auxiliary positioning bridge is formed by rigidly connecting two radial auxiliary positioning pins capable of moving along a linear stroke track and a radial auxiliary positioning frame, and the two radial auxiliary positioning pins are symmetrically distributed on two sides of a connecting line of the centers of the radial positioning pins and the center of the measuring head positioning pin and can synchronously move along the linear track; the stroke tracks of the two radial auxiliary positioning pins are parallel to each other and are respectively parallel to the positioning stroke tracks of the measuring head.
The preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part is that the end face of the axial positioning block is rectangular, the bottom of the axial positioning block is cylindrical, and the circle center of the cylindrical is superposed with the center of the rectangular;
the end face of the axial positioning block is close to the width of the measuring tool rack, and the center of the cylindrical end is placed along the center line of the measuring tool rack in the radial direction;
the axial positioning blocks are three, the end faces are equal in height, and the axial positioning blocks are parallel to the plane where the measuring tool rack is located.
The preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part is that the axis of the measuring head positioning pin is perpendicular to the plane where the measuring tool frame is located.
According to the preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part, the radial positioning pin is a cylinder, the bottom end of the radial positioning pin is hemispherical, and the height from the end face of the radial positioning pin to the plane where the measuring tool frame is located is larger than the height from the axial positioning block to the plane where the crescent moon plate is located.
According to the preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part, the auxiliary positioning pins on the radial auxiliary positioning bridge are cylindrical, the diameters of the auxiliary positioning pins are equal and larger than the diameter of the radial positioning pin, the bottom ends of the auxiliary positioning pins are hemispherical, and the end faces of the auxiliary positioning pins are as high as the end faces of the radial positioning pin.
The preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part is that a plurality of holes are formed in the measuring tool frame along the axis and are uniformly distributed on two sides of the central line of the measuring tool frame, so that the weight of the measuring tool is reduced, and an operator can conveniently hold the measuring tool.
The preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part is that the measuring tool frame is a crescent moon plate with an angle larger than 180 degrees.
The preferable scheme of the measuring tool for the inner and outer rabbets of the disc ring type part is that the positioning pin and the radial positioning pin of the measuring head are made of hard alloy.
A use method of a measuring tool for inner and outer rabbets of a disc ring type part is characterized in that an axial positioning block is arranged on the end face of the rabbets, and a measuring head positioning pin, a radial positioning pin and a radial auxiliary positioning pin are arranged on the inner walls of the rabbets; when the outer spigot is measured, the positioning block is arranged on the end face of the spigot, and the measuring head positioning pin, the radial positioning pin and the radial auxiliary positioning pin are arranged on the outer wall of the spigot. The measuring device can measure the spigot size only by attaching the positioning block to the spigot end face, thereby simplifying the measuring process.
The invention has the beneficial effects that: the technical scheme of the invention effectively solves the problem of detecting the size of the spigot of the disc part, in particular to the size of the spigot of the part which cannot be measured by a conventional measuring tool. The inner and outer seam allowance measuring tool for the disc ring parts adopts a conventional comparative measuring method, and the size of the seam allowance can be simply and conveniently detected by matching a standard part. The measuring tool can detect the sizes of the inner spigot and the outer spigot, and can be suitable for detecting various spigot sizes without adjustment by combining standard parts with different sizes. The radial auxiliary positioning bridge and the axial positioning block simplify the calibration step in the use process of the measuring tool, and improve the detection efficiency. Due to the position relation of the measuring head and the radial positioning pin, the size of the spigot can be accurately measured without intervention of an operator. The influence of the working state of an operator during measurement is eliminated, objective fluctuation factors are suppressed, and the measurement accuracy and stability are improved. The invention overcomes the defects of the existing measuring tool in the using process and can be widely applied to the detection of large-size and high-precision disc ring parts.
Drawings
FIG. 1 is a schematic structural diagram of a spigot measuring tool for a disc-ring type part;
FIG. 2 is a diagram showing the usage state of the outer spigot measured by the inner and outer spigot measuring tool for the disc and ring type parts;
FIG. 3 is a using state diagram of the inner and outer seam allowance measuring tool for the disc ring type parts for measuring the inner seam allowance;
fig. 4 is a schematic view of a measuring head.
In the figure, 1-measuring tool frame, 2-axial positioning block, 3-measuring head, 4-radial positioning pin, 5-radial auxiliary positioning bridge, 6-universal wheel dial indicator, 7-compression screw, 8-inner spigot disc ring part, 9-outer spigot disc ring part, 10-measuring tool frame central line, 11-base, 12-slide block, 13-positioning pin and 14-spring.
Detailed Description
According to the measuring tool shown in fig. 1-4, a measuring tool frame 1 is a crescent moon-shaped crescent plate with the angle larger than 180 degrees, the crescent measuring tool frame 1 can avoid the shaft center protruding part of the special shape of the disc part, so that the size of the seam allowance of the disc ring part with a complex cavity is measured, a plurality of holes are formed in the center line of the measuring tool frame, the weight of the measuring tool is reduced, an operator can conveniently hold the measuring tool, the inner and outer seam allowance measuring tool of the disc ring part in the embodiment can be subjected to quenching and tempering, and the rigidity of the measuring tool is enhanced. Therefore, the deformation of the inner and outer seam allowance measuring tools of the disc ring parts after external force is applied is reduced.
The axial positioning blocks 2 are three and have the same shape, the end parts are strip rectangles, the bottom parts are cylinders, and the centers of the cylinders are superposed with the centers of the rectangles; the strip rectangle at the end part is close to the width of the measuring tool rack, and is placed along the radial direction of the point where the center line of the measuring tool rack is located, so that stable support can be realized when the inner and outer rabbets are measured; the central lines of the three positioning blocks are on the central line 10 of the measuring tool rack, one axial positioning block is close to the measuring head at the upper part of the measuring tool rack, the second axial positioning block is at the middle part of the measuring tool rack, and the third axial positioning block is positioned at the lower part of the measuring tool rack, so that the requirement on the position precision of the positioning blocks can be reduced actually, but the premise is that the positioning blocks are uniformly distributed, so that the measuring tool rack can be stably supported in the measuring process. More importantly, the end surfaces of the three positioning blocks are parallel to each other and have higher plane precision, and the end surfaces of the three positioning blocks are respectively parallel to the plane of the measuring tool rack and have equal distances from the plane of the measuring tool rack.
The measuring head 3 is a separate device with a positioning pin, and is composed of a base 11, a slide block 12, a positioning pin 13 and a spring 14. The base 11 is used for fixedly connecting the measuring tool rack 1, and a linear track on the base 11 defines a motion track of the slide block 12. The slide block 12 is connected with a measuring head positioning pin, and the slide block and the measuring head positioning pin move together. The measuring head positioning pin is cylindrical, the end part of the measuring head positioning pin is semicircular, the axis of the measuring head positioning pin is vertical to the plane where the measuring tool frame is located, and the end surface of the measuring head positioning pin is equal to the end surface of the radial positioning pin in height; the positioning pin is made of hard alloy to improve the wear resistance of the measuring tool. The initial position of the measuring head positioning pin is a stroke midpoint, the direction far away from the radial positioning pin is a stroke positive direction, and the direction close to the radial positioning pin is a stroke negative direction. The same springs 14 are respectively arranged in the positive and negative directions of the strokes on the two sides of the sliding block 12, so that the measuring head positioning pin can generate displacement under the working state, namely can move after being stressed, and returns to the initial position under the non-working state. The contact of the universal wheel dial indicator 6 penetrates through the measuring tool frame 1 to be in surface contact with the sliding block 12, and when the measuring head positioning pin moves, the pointer of the universal wheel dial indicator 6 displays the moving distance of the positioning pin. The universal wheel dial indicator is fixed on the measuring tool frame by the compression screw. And during installation, the measuring head positioning pin is ensured to be positioned on the central line of the measuring tool frame in the initial state.
The radial positioning pin 4 is positioned at the lower part of the measuring tool frame, and the center of the radial positioning pin is positioned on the central line of the measuring tool frame and on the extension line of the stroke track of the measuring head. The positioning pin is cylindrical, the end part of the positioning pin is hemispherical, the axis of the radial positioning pin is perpendicular to the plane where the measuring tool frame is located, the height from the end surface of the positioning pin to the plane where the measuring tool frame is located is larger than the height from the end surface of the axial positioning block to the surface of the measuring tool frame, and in order to improve the wear resistance of the spigot measuring tool, the positioning pin can be made of hard alloy.
The radial auxiliary positioning bridge 5 is formed by rigidly connecting two identical auxiliary positioning pins, the two auxiliary positioning pins are close to the measuring head in structure and can move along a linear track, the radial auxiliary measuring head is cylindrical, and the end part of the radial auxiliary measuring head is hemispherical. The axial line of the radial auxiliary positioning pin is vertical to the plane of the measuring tool frame, the end face of the radial auxiliary positioning pin is equal to the end face of the radial positioning pin in height, the positioning pin is positioned at the middle point of the stroke track in an initial state, the direction far away from the measuring head is the positive direction of the positioning pin, and the direction close to the measuring head is the negative direction. The diameters of the auxiliary positioning pins are not too small so as to ensure that the measuring tool can generate displacement in the positive direction or the negative direction during working, and the two radial auxiliary positioning pins are positioned at the lower part of the measuring tool frame and symmetrically distributed at two sides of the connecting line of the centers of the radial positioning pins and the center of the measuring head positioning pin. The stroke tracks of the two radial auxiliary positioning pins are parallel to each other and are respectively parallel to the stroke tracks of the measuring head positioning pins. During installation, the centers of the radial auxiliary positioning pins are ensured to be positioned on the central line of the crescent plate in the initial state, and the two radial auxiliary positioning pins are connected by the rigid radial auxiliary positioning frame and can generate the same displacement simultaneously.
As shown in fig. 2-3, the inner and outer seam allowance gauges of the disc ring part of the present embodiment are respectively used for measuring the dimensions of the inner and outer seam allowances. When the measuring tool works, a comparison measurement principle is adopted, firstly, the measuring tool for the inner spigot and the outer spigot of the disc ring part is used for measuring a standard size measuring block, when the inner spigot is measured, the measuring head positioning pin, the axial positioning pin and the radial auxiliary positioning pin are arranged on the inner wall of the standard part, the axial positioning block 2 is arranged on the end face of the standard part, the standard size is measured, and the universal wheel dial indicator 6 is adjusted to a zero position. Then, a measuring head positioning pin and a radial positioning pin of the measuring tool are arranged on the inner wall of the rabbet of the part to be measured, and an axial positioning block 2 is arranged on the end face of the rabbet of the part to be measured. When the size of the inner spigot is measured, the measuring head positioning pin and the radial auxiliary positioning pin move towards the negative direction, and due to the action of the spring, the measuring head positioning pin and the radial auxiliary positioning pin are attached to the inner wall of the spigot under the action of the positive direction force, so that radial automatic accurate positioning is realized. And reading the deviation value of the universal wheel dial indicator 6, wherein if the deviation is within the tolerance range of the design drawing, the machining size meets the actual requirement, and otherwise, the machining is continued until the machining size meets the requirement. The process of measuring the size of the outer spigot is similar to the process, as shown in fig. 3, and the difference is that a measuring head positioning pin, a radial positioning pin and a radial auxiliary positioning pin of the disc ring part spigot measuring tool are arranged on the outer wall of the standard part before the dial indicator of the universal wheel is zeroed, and the measuring head positioning pin and the axial positioning pin of the disc ring part spigot measuring tool are arranged on the outer wall of the spigot of the part to be measured during measurement.
When the measuring tool for the inner seam allowance of the disc ring part is used for measuring the inner seam allowance, the axial positioning block is arranged on the end face of the seam allowance, and the measuring head positioning pin, the radial positioning pin and the radial auxiliary positioning pin are arranged on the inner wall of the seam allowance; when the outer spigot is measured, the positioning block is arranged on the end face of the spigot, and the measuring head positioning pin, the radial positioning pin and the radial auxiliary positioning pin are arranged on the outer wall of the spigot. The measuring device has the advantages that repeated adjustment is not needed before use, measurement can be carried out only through once correction, the measuring process is simplified, the machining efficiency is improved, the size of the spigot can be measured only by attaching the positioning block to the end face of the spigot in the using process, and the influence of the working state of an operator on the size precision of a product is avoided. The measuring tool for the spigot of the disc ring part can measure the size of the outer spigot and the size of the inner spigot, achieves multifunctional purposes, and can effectively save resources and space.
Claims (9)
1. A measuring tool for inner and outer rabbets of a disc ring type part is characterized by comprising a measuring tool frame, an axial positioning block, a measuring head, a radial positioning pin, a radial auxiliary positioning bridge, a universal wheel dial indicator and a compression screw;
the measuring tool frame is a crescent moon plate, and the center line of the crescent moon plate is suitable for a concentric circular arc of the crescent moon plate;
the axial positioning blocks are uniformly distributed on the surface of the measuring tool rack;
the measuring head is an independent device with a positioning pin and consists of a base, a sliding block, a positioning pin and a spring; the base is provided with a linear track which limits the motion track of the sliding block; the sliding block is connected with the measuring head positioning pin and moves together with the measuring head positioning pin;
the base is fixedly connected with the measuring tool frame;
the positioning pin on the measuring head is a cylinder, the bottom end of the positioning pin is hemispherical, and the height of the end surface of the positioning pin is the same as that of the end surface of the radial positioning pin;
the universal wheel dial indicator contact penetrates through the measuring tool frame to be in contact with the surface of the sliding block, and the universal wheel dial indicator is fixed on the measuring tool frame through the compression screw;
the radial positioning pin is arranged on a central line of the lower part of the measuring tool frame;
the radial auxiliary positioning bridge is formed by rigidly connecting two radial auxiliary positioning pins capable of moving along a linear stroke track and a radial auxiliary positioning frame, and the two radial auxiliary positioning pins are symmetrically distributed on two sides of a connecting line of the centers of the radial positioning pins and the center of the measuring head positioning pin and can synchronously move along the linear track; the stroke tracks of the two radial auxiliary positioning pins are parallel to each other and are respectively parallel to the positioning stroke tracks of the measuring head.
2. The measuring tool for the inner and outer rabbets of the disc ring type parts according to claim 1, wherein the end face of the axial positioning block is rectangular, the bottom of the axial positioning block is cylindrical, and the center of the cylindrical circle coincides with the center of the rectangular circle;
the end face of the axial positioning block is close to the width of the measuring tool rack, and the center of the cylindrical end is placed along the center line of the measuring tool rack in the radial direction;
the axial positioning blocks are three, the end faces are equal in height, and the axial positioning blocks are parallel to the plane where the measuring tool rack is located.
3. The gauge for measuring the inner and outer rabbets of disc-ring type parts as claimed in claim 1, wherein the axes of the positioning pins of the measuring heads are perpendicular to the plane of the gauge holder.
4. The measuring tool for the inner and outer rabbets of the disc-ring type parts as claimed in claim 1, wherein the bottom end of the radial positioning pin position cylinder is hemispherical, and the height from the end surface of the radial positioning pin position cylinder to the plane where the measuring tool frame is located is larger than the height from the axial positioning block to the plane where the crescent moon plate is located.
5. The gauge for measuring the inner and outer rabbets of the disc-ring type parts as claimed in claim 1, wherein the auxiliary positioning pins on the radial auxiliary positioning bridges are cylindrical in shape, have the same diameter and are larger than the diameter of the radial positioning pins, the bottom ends of the auxiliary positioning pins are hemispherical, and the end surfaces of the auxiliary positioning pins are equal to the end surfaces of the radial positioning pins.
6. The measuring tool for the male and female ends of disc ring type parts according to claim 1, wherein the measuring tool holder is provided with a plurality of holes along the axis, and the holes are uniformly distributed on both sides of the central line of the measuring tool holder for reducing the weight of the measuring tool and facilitating the holding by an operator.
7. The inner and outer spigot measuring tool for disc-ring parts according to claim 1, wherein said measuring tool holder is a crescent of greater than 180 °.
8. The gauge for measuring the inner and outer rabbets of disc-ring type parts according to claim 1, wherein the positioning pins of the measuring head and the additional radial auxiliary positioning pins are made of hard alloy.
9. The use method of the inner and outer rabbet measuring tool of the disc ring type parts as claimed in claim 1, wherein the axial positioning block is arranged on the end surface of the rabbet, and the measuring head positioning pin, the radial positioning pin and the radial auxiliary positioning pin are arranged on the inner wall of the rabbet; when the outer spigot is measured, the positioning block is arranged on the end face of the spigot, and the measuring head positioning pin, the radial positioning pin and the radial auxiliary positioning pin are arranged on the outer wall of the spigot. The measuring device can measure the spigot size only by attaching the positioning block to the spigot end face, thereby simplifying the measuring process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911170359.2A CN110836624A (en) | 2019-11-26 | 2019-11-26 | Inner and outer seam allowance measuring tool for disc ring type parts and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911170359.2A CN110836624A (en) | 2019-11-26 | 2019-11-26 | Inner and outer seam allowance measuring tool for disc ring type parts and using method thereof |
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| CN113251899A (en) * | 2021-05-26 | 2021-08-13 | 河南柴油机重工有限责任公司 | Special measuring tool for diameter size of large-diameter shallow spigot |
| CN113251899B (en) * | 2021-05-26 | 2023-12-01 | 河南柴油机重工有限责任公司 | Special measuring tool for diameter size of large-diameter shallow spigot |
| CN115876141A (en) * | 2023-01-06 | 2023-03-31 | 甘肃海林中科科技股份有限公司 | Asymmetric hub spigot measuring tool and method |
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Application publication date: 20200225 |