CN114322720A - Tool for measuring symmetry degree of key groove of shaft part - Google Patents
Tool for measuring symmetry degree of key groove of shaft part Download PDFInfo
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- CN114322720A CN114322720A CN202111620739.9A CN202111620739A CN114322720A CN 114322720 A CN114322720 A CN 114322720A CN 202111620739 A CN202111620739 A CN 202111620739A CN 114322720 A CN114322720 A CN 114322720A
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Abstract
The invention relates to the technical field of mechanical part detection, in particular to a tool for measuring symmetry of a key groove of an axle part, which comprises a detection table and a stepped shaft, wherein a supporting seat is arranged on the detection table and comprises a V-shaped block, two groups of sliding blocks, a supporting base and a sliding rail, the two groups of sliding blocks are respectively arranged on two sides of the lower part of the V-shaped block, the sliding blocks are in sliding connection with the sliding rail, the top of each sliding block is provided with an inclined plane, the lower surface of the V-shaped block is matched with the sliding block, the bottom of the V-shaped block is provided with a connecting block, two sides of the connecting block are fixedly provided with a screw rod penetrating through the sliding block, one end of the screw rod is provided with a nut, the stepped shaft is arranged on the upper side of the V-shaped block, and a measuring device is arranged on the upper side of the stepped shaft. The V-shaped block is supported by the sliding block, the V-shaped block can be adjusted when the sliding block slides, the height and the levelness of the stepped shaft can be conveniently adjusted, the measuring device is provided with the main caliper and the auxiliary caliper, the symmetry degree of the key groove is measured and calculated by matching with the calibration caliper, and the detection efficiency and the accuracy are improved.
Description
Technical Field
The invention relates to the technical field of mechanical part detection, in particular to a tool for measuring the symmetry degree of a key groove of a shaft part.
Background
Symmetry refers to the axis of the dimension being machined, which must lie within the tolerance required for symmetry, and between two parallel planes symmetrical with respect to a secondary plane passing through the reference axis, subject to positional tolerances. The symmetry degree is the minimum distance between two planes including the symmetry plane (or axis line) of the measured surface with the reference as the center of symmetry.
A groove, called a keyway, is machined into the shaft or bore to mate with the key for receiving the key to transmit torque.
The shaft part is a common mechanical part, such as a camshaft for a diesel engine, the camshaft is an important part in a piston engine, one end of the camshaft is a bearing supporting point, the other end of the camshaft is connected with a driving wheel, a plurality of cams are arranged on a shaft body of the camshaft, and the camshaft drives the cams to rotate so as to control the opening and closing actions of the valve. The cylindrical pin arranged on the end face of the camshaft is taken as a reference datum, the position size of the cylindrical pin is measured by a three-coordinate measuring instrument, the measuring result is very accurate, and along with the updating and the technical development of products, the flat key arranged on the camshaft is almost taken as the reference datum in the existing new products, so that the requirement on the symmetry size of the key slot is very strict, and the symmetry measurement is required after the machining center is finished.
In the manufacturing process of the shaft parts, a plurality of key grooves are required to be formed to facilitate subsequent assembly, and the symmetry degree of the key grooves is required to be detected in order to ensure that the symmetry degree of the key grooves machined in the shaft parts meets the requirement. The key grooves need to be symmetrical without influencing subsequent processing, people usually measure the position and the size of the key grooves by using a ruler, the symmetry is known according to the measured size comparison, the operation is troublesome, and the efficiency is influenced by the fact that hands feel sore after a long time because the ruler is continuously pulled.
In the prior art, the symmetry detection mode is simple, and when an operator measures through a simple vernier caliper, the operation is difficult, and the reference error is easily caused by repeated adjustment, so that the final measurement result is influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a tool for measuring the symmetry degree of a key groove of a shaft part.
In order to achieve the purpose, the invention adopts the following technical scheme:
axle type part keyway symmetry measures frock, including examining test table and step shaft, it is equipped with the supporting seat to examine test table, the supporting seat includes V type piece, slider, support base and slide rail, the slider is equipped with two sets ofly, divides and establishes V type piece lower part both sides, slider and slide rail sliding connection, the slider top is equipped with the inclined plane, V type piece lower surface and slider adaptation, V type piece bottom is equipped with the connecting block, the fixed screw rod that runs through the slider that is equipped with in connecting block both sides, screw rod one end is equipped with the nut, the step shaft sets up in V type piece upside, the step shaft upside is equipped with measuring device, measuring device one side is equipped with the expansion bracket, the expansion bracket bottom is equipped with stable seat, measuring device includes sliding sleeve, main slide caliper, vice slide caliper and calibration slide caliper, calibration slide caliper one side is equipped with calibrating device.
Preferably, the supporting base and the stabilizing base are connected with the detection table through magnetic blocks.
Preferably, the cross section of the slide rail is isosceles trapezoid, and the slide rail is fixedly connected with the support base.
Preferably, the sliding block is in sliding contact with the lower surface of the V-shaped block, and a sliding hole matched with the screw is formed in the sliding block.
Preferably, the screw rod is in sliding connection with the sliding hole, the nut is in threaded connection with the screw rod, and the nut abuts against the sliding block.
Preferably, the stepped shaft is provided with key grooves, and the supporting seats are provided with multiple groups and are uniformly arranged on the lower side of the stepped shaft.
Preferably, an electronic watch is arranged on one side of the sliding sleeve, a position sensor is arranged in the sliding sleeve, and the position sensor is a capacitive grating sensor.
Preferably, the main caliper and the auxiliary caliper are both connected with the sliding sleeve in a sliding manner, and the sliding sleeve is fixedly connected with the top of the expansion bracket.
Preferably, the main caliper and the auxiliary caliper respectively abut against the side wall of the key groove, and the calibration caliper abuts against the side curved surface of the stepped shaft.
Preferably, calibrating device includes adjusting screw and fixing base, fixing base and sliding sleeve fixed connection, adjusting screw runs through the fixing base, and through threaded connection between the fixing base, adjusting screw one end is connected with the rotation of calibration slide caliper rule.
The invention has the beneficial effects that:
1. according to the invention, the stepped shaft is supported by the V-shaped block, the V-shaped block is supported by the sliding block, and the V-shaped block can be adjusted when the sliding block slides, so that the height and the levelness of the stepped shaft can be conveniently adjusted, and the detection accuracy of equipment is improved.
2. The measuring device is provided with the main caliper and the auxiliary caliper, the width of the key groove can be detected, and the position size of the key groove can be quickly determined by matching with the calibration caliper, so that the symmetry degree of the key groove is measured and calculated, and the detection efficiency and accuracy are improved.
Drawings
FIG. 1 is a schematic three-dimensional structure diagram of a key slot symmetry degree measuring tool for shaft parts according to the present invention;
FIG. 2 is a schematic structural view of a key slot symmetry degree measuring tool for shaft parts according to the present invention;
FIG. 3 is a left side view structural diagram of the key slot symmetry degree measuring tool for the shaft parts according to the present invention;
fig. 4 is a schematic structural diagram of a measuring device of the key groove symmetry degree measuring tool for shaft parts.
In the figure: the device comprises a step shaft 1, a measuring device 2, an expansion bracket 21, a stable seat 22, a sliding sleeve 23, an electronic watch 24, a main caliper 25, an auxiliary caliper 26, a calibration caliper 27, a calibration device 28, a support seat 3, a V-shaped block 31, a nut 32, a sliding block 33, a sliding hole 331, a connecting block 34, a support base 35, a sliding rail 36, a detection table 4 and a key groove 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a tool for measuring the key slot symmetry of a shaft part comprises a detection table 4 and a stepped shaft 1, wherein a support seat 3 is arranged on the detection table 4, the support seat 3 comprises a V-shaped block 31, a slide block 33, a support base 35 and a slide rail 36, two groups of slide blocks 33 are arranged and are respectively arranged at two sides of the lower part of the V-shaped block 31, the slide block 33 is in sliding connection with the slide rail 36, the top of the slide block 33 is provided with an inclined plane, the lower surface of the V-shaped block 31 is matched with the slide block 33, the bottom of the V-shaped block 31 is provided with a connecting block 34, two sides of the connecting block 34 are fixedly provided with a screw rod penetrating through the slide block 33, one end of the screw rod is provided with a nut 32, the stepped shaft 1 is arranged at the upper side of the V-shaped block 31, a measuring device 2 is arranged at the upper side of the stepped shaft 1, an expansion bracket 21 is provided with a stabilizing seat 22, the measuring device 2 comprises a slide sleeve 23, the caliper comprises a main caliper 25, an auxiliary caliper 26 and a calibration caliper 27, wherein a calibration device 28 is arranged on one side of the calibration caliper 27.
In this embodiment, the supporting base 35 and the stabilizing base 22 are both connected to the detecting table 4 through the magnetic block, and when the detection is needed, the supporting base 35 and the stabilizing base 22 are fixed through the magnetic block, so that the sliding of the supporting base 35 and the stabilizing base 22 is avoided, and the size detection precision is not affected.
Specifically, the cross section of the sliding rail 36 is isosceles trapezoid, the sliding rail 36 is fixedly connected with the supporting base 35, the connection strength between the supporting base 35 and the sliding block 33 is improved, it is ensured that the sliding block 33 slides on the supporting base 35, the sliding block 33 is in sliding contact with the lower surface of the V-shaped block 31, the sliding block 33 is provided with a sliding hole 331 adapted to the screw rod, the screw rod is in sliding connection with the sliding hole 331, the nut 32 is in threaded connection with the screw rod, the nut 32 abuts against the sliding block 33, the nut 32 moves on the screw rod to urge the sliding block 33 to move, the V-shaped block 31 abutting against the upper surface of the sliding block 33 is pushed by the inclined surface to rise, so that the different diameters of the stepped shaft 1 are adapted, and the stepped shaft 1 is ensured to be horizontally placed.
Specifically, the key groove 5 has been seted up on the step shaft 1, and supporting seat 3 is equipped with the multiunit, evenly sets up in 1 downside of step shaft, steadily supports step shaft 1.
Furthermore, an electronic watch 24 is arranged on one side of the sliding sleeve 23, a position sensor is arranged in the sliding sleeve 23, and the position sensor is a capacitive grating sensor, so that an operator can conveniently read the position of the electronic watch, and the size or the symmetry of the electronic watch can be quickly and accurately measured.
Specifically, main callipers 25 and vice callipers 26 all with sliding sleeve 23 sliding connection, sliding sleeve 23 and 21 top fixed connection of expansion bracket, main callipers 25 offsets with 5 lateral walls of keyway respectively with vice callipers 26, calibration callipers 27 offsets with 1 side curved surface of step shaft, 5 width dimensions of keyway are measured to main callipers 25 and vice callipers 26, 5 position dimensions of keyway are measured to cooperation calibration callipers 27, add measuring device 2 as required, measure keyway 5 from both sides, obtain the symmetry error fast.
Specifically, calibrating device 28 includes adjusting screw and fixing base, fixing base and sliding sleeve 23 fixed connection, and adjusting screw runs through the fixing base, and through threaded connection between the two, adjusting screw one end is rotated with calibration slide caliper 27 and is connected, adjusts calibration slide caliper 27 through calibrating device, ensures main slide caliper 25 and vice slide caliper 26 measurement accuracy, avoids taking place systematic error, influences final testing result.
In this embodiment, an operator places the stepped shaft 1 on the V-shaped block 31, and presses the sliding block 33 by rotating the nut 32, so as to adjust the height of the V-shaped block 31, adapt to different journal sizes of the stepped shaft 1, ensure that the stepped shaft 1 is kept horizontal, avoid affecting the detection result, the measuring device 2 performs zeroing by the calibrating device 28, then the main caliper 25 and the auxiliary caliper 26 are respectively abutted against the side walls at two sides of the key slot 5, the calibrating caliper 27 is abutted against the curved surface at the side of the stepped shaft 1, ensure that the calibrating caliper 27 is tangent to the stepped shaft 1, measure accurate data, then quickly read the width size of the key slot 5 and the position size between the key slot 5 and the stepped shaft 1 by the electronic watch 24, when the measurement precision needs to be improved and the result accuracy is ensured, the position of the measuring device 2 needs to be adjusted, or a plurality of sets of measuring devices 2 are provided, and measure the key slot 5 from different positions or directions, in order to obtain accurate symmetry error dimension, wherein, distinguish data error size wherein through 5 width dimensions of keyway, avoid adjusting behind the measuring device 2, the operation mistake causes great deviation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Claims (10)
1. Axle type part keyway symmetry measures frock, including examining test table (4) and step shaft (1), its characterized in that, be equipped with supporting seat (3) on examining test table (4), supporting seat (3) include V type piece (31), slider (33), support base (35) and slide rail (36), slider (33) are equipped with two sets ofly, divide and establish V type piece (31) lower part both sides, slider (33) and slide rail (36) sliding connection, slider (33) top is equipped with the inclined plane, V type piece (31) lower surface and slider (33) adaptation, V type piece (31) bottom is equipped with connecting block (34), the fixed screw rod that runs through slider (33) in connecting block (34) both sides, screw rod one end is equipped with nut (32), step shaft (1) sets up in V type piece (31) upside, step shaft (1) upside is equipped with measuring device (2), measuring device (2) one side is equipped with expansion bracket (21), expansion bracket (21) bottom is equipped with stable seat (22), measuring device (2) are equipped with calibrating device (28) including sliding sleeve (23), main slide caliper rule (25), vice slide caliper rule (26) and calibration slide caliper rule (27), calibration slide caliper rule (27) one side.
2. The tool for measuring the key groove symmetry of the shaft parts according to claim 1, wherein the supporting base (35) and the stabilizing base (22) are connected with the detection table (4) through magnetic blocks.
3. The tool for measuring the symmetry degree of the key grooves of the shaft parts according to claim 1, wherein the cross section of the sliding rail (36) is isosceles trapezoid, and the sliding rail (36) is fixedly connected with the supporting base (35).
4. The tool for measuring the key groove symmetry of the shaft parts according to claim 1, wherein the sliding block (33) is in sliding contact with the lower surface of the V-shaped block (31), and a sliding hole (331) matched with the screw is formed in the sliding block (33).
5. The tool for measuring the key groove symmetry of the shaft parts according to claim 4, wherein the screw rod is in sliding connection with the sliding hole (331), the nut (32) is in threaded connection with the screw rod, and the nut (32) abuts against the sliding block (33).
6. The tool for measuring the symmetry degree of the key grooves of the shaft parts according to claim 1, wherein the stepped shaft (1) is provided with the key grooves (5), and the supporting seats (3) are provided with a plurality of groups which are uniformly arranged on the lower side of the stepped shaft (1).
7. The tool for measuring the key slot symmetry of the shaft parts according to claim 6, wherein an electronic watch (24) is arranged on one side of the sliding sleeve (23), a position sensor is arranged in the sliding sleeve (23), and the position sensor is a capacitive grating sensor.
8. The tool for measuring the key slot symmetry of the shaft parts according to claim 7, wherein the main caliper (25) and the auxiliary caliper (26) are both in sliding connection with a sliding sleeve (23), and the sliding sleeve (23) is fixedly connected with the top of the telescopic frame (21).
9. The shaft part key groove symmetry degree measuring tool according to claim 8, wherein the main caliper (25) and the auxiliary caliper (26) respectively abut against the side wall of the key groove (5), and the calibration caliper (27) abuts against the side curved surface of the stepped shaft (1).
10. The tool for measuring the key slot symmetry of the shaft parts according to claim 9, wherein the calibration device (28) comprises an adjusting screw and a fixed seat, the fixed seat is fixedly connected with the sliding sleeve (23), the adjusting screw penetrates through the fixed seat and is in threaded connection with the fixed seat, and one end of the adjusting screw is rotatably connected with the calibration caliper (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620739.9A CN114322720A (en) | 2021-12-28 | 2021-12-28 | Tool for measuring symmetry degree of key groove of shaft part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620739.9A CN114322720A (en) | 2021-12-28 | 2021-12-28 | Tool for measuring symmetry degree of key groove of shaft part |
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| Publication Number | Publication Date |
|---|---|
| CN114322720A true CN114322720A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111620739.9A Pending CN114322720A (en) | 2021-12-28 | 2021-12-28 | Tool for measuring symmetry degree of key groove of shaft part |
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| CN (1) | CN114322720A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB772595A (en) * | 1953-06-16 | 1957-04-17 | Massey Harris Ferguson Ltd | Gauge for checking the centricity of transverse holes in shafts |
| SU1174732A1 (en) * | 1984-01-09 | 1985-08-23 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Редукторостроения | Device for checking key slot |
| CN2177224Y (en) * | 1993-07-30 | 1994-09-14 | 易尚中 | Vernier scale capable of directly measuring key slot symmetry degree |
| CN104111012A (en) * | 2014-07-29 | 2014-10-22 | 安徽天恒工具制造有限公司 | Center measuring device and center measuring method |
| CN105157540A (en) * | 2015-05-14 | 2015-12-16 | 刘美艺 | Shaft keyway symmetry error measurement gauge |
| CN204963701U (en) * | 2015-08-27 | 2016-01-13 | 徐州工业职业技术学院 | Measure slide caliper of symmetry |
| CN204963768U (en) * | 2015-08-27 | 2016-01-13 | 徐州工业职业技术学院 | Measure combination utensil of symmetry |
| CN206056413U (en) * | 2016-08-16 | 2017-03-29 | 辽宁五一八内燃机配件有限公司 | Tractor crankshaft adjustable trestle |
| CN208262306U (en) * | 2018-01-05 | 2018-12-21 | 常州信息职业技术学院 | A kind of adjusting cushion block |
-
2021
- 2021-12-28 CN CN202111620739.9A patent/CN114322720A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB772595A (en) * | 1953-06-16 | 1957-04-17 | Massey Harris Ferguson Ltd | Gauge for checking the centricity of transverse holes in shafts |
| SU1174732A1 (en) * | 1984-01-09 | 1985-08-23 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Редукторостроения | Device for checking key slot |
| CN2177224Y (en) * | 1993-07-30 | 1994-09-14 | 易尚中 | Vernier scale capable of directly measuring key slot symmetry degree |
| CN104111012A (en) * | 2014-07-29 | 2014-10-22 | 安徽天恒工具制造有限公司 | Center measuring device and center measuring method |
| CN105157540A (en) * | 2015-05-14 | 2015-12-16 | 刘美艺 | Shaft keyway symmetry error measurement gauge |
| CN204963701U (en) * | 2015-08-27 | 2016-01-13 | 徐州工业职业技术学院 | Measure slide caliper of symmetry |
| CN204963768U (en) * | 2015-08-27 | 2016-01-13 | 徐州工业职业技术学院 | Measure combination utensil of symmetry |
| CN206056413U (en) * | 2016-08-16 | 2017-03-29 | 辽宁五一八内燃机配件有限公司 | Tractor crankshaft adjustable trestle |
| CN208262306U (en) * | 2018-01-05 | 2018-12-21 | 常州信息职业技术学院 | A kind of adjusting cushion block |
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