CN111207706B - Detection device and detection method for umbrella-shaped insection part - Google Patents
Detection device and detection method for umbrella-shaped insection part Download PDFInfo
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- CN111207706B CN111207706B CN202010046326.3A CN202010046326A CN111207706B CN 111207706 B CN111207706 B CN 111207706B CN 202010046326 A CN202010046326 A CN 202010046326A CN 111207706 B CN111207706 B CN 111207706B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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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 detection device and a detection method for an umbrella-shaped insection part, wherein the detection device comprises a centering flange, a positioning flange and a positioning flange, wherein the centering flange comprises a baffle and a cylindrical flange one end of which is fixedly connected with the baffle; the step column comprises a first cylinder and a second cylinder which are fixedly connected and coaxially arranged, and the first cylinder can be inserted into the central hole of the centering flange and is in clearance fit with the central hole; the centering flange is inserted into a center hole of the umbrella-shaped insection part to be detected, when the baffle abuts against the end, far away from the insection, of the umbrella-shaped insection part to be detected, the circular rods can be inserted into insection grooves of the umbrella-shaped insection part to be detected, the first cylinder is inserted into the center hole of the centering flange, and the end edge of the second cylinder can abut against the circular rods inserted into the insection grooves of the umbrella-shaped insection part to be detected. The detection device for the umbrella-shaped insection part can effectively reduce the detection cost of the umbrella-shaped insection part and save the detection time.
Description
Technical Field
The invention relates to the technical field of gears, in particular to a detection device and a detection method for an umbrella-shaped insection part.
Background
Some mechanical parts engaged by umbrella-shaped insections have insections with different angles observed from different directions (tooth top direction and tooth bottom direction), and the insections with oblique structure (umbrella-shaped) are difficult to directly measure, especially the insections with tooth depth and tooth width.
The detection method in the prior art mainly comprises the steps of carrying out insection dissection on umbrella-shaped insection parts of an insection meshing structure, then carrying out 3D scanning mapping and comparing with the insection characteristic dimension of a design drawing, wherein the detection method is long in detection time and high in cost, can only be adopted during single spot inspection, and cannot be used for detecting the insections of all umbrella-shaped insection parts.
In summary, how to effectively reduce the detection cost of the umbrella-shaped insection part and save the detection time is a problem that needs to be solved urgently by those skilled in the art at present.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a detection apparatus for umbrella-shaped insection parts, which can effectively reduce the detection cost of umbrella-shaped insection parts and save the detection time, and a second object of the present invention is to provide a detection method using the detection apparatus for umbrella-shaped insection parts.
In order to achieve the purpose, the invention provides the following technical scheme:
a detection device for umbrella-shaped insection parts comprises:
the centering flange comprises a baffle plate and a cylindrical flange, one end of the cylindrical flange is fixedly connected with the baffle plate, and a central hole penetrating through the baffle plate and the cylindrical flange is formed in the centering flange;
the step column comprises a first cylinder and a second cylinder which are fixedly connected and coaxially arranged, the diameter of the first cylinder is smaller than that of the second cylinder, and the first cylinder can be inserted into the central hole of the centering flange and is in clearance fit with the central hole;
the centering flange is inserted into a center hole of the umbrella-shaped insection part to be detected, when the baffle abuts against the end, far away from the insection, of the umbrella-shaped insection part to be detected, the circular rods can be inserted into insection grooves of the umbrella-shaped insection part to be detected, the first cylinder is inserted into the center hole of the centering flange, and the end edge of the second cylinder can abut against the circular rods inserted into the insection grooves of the umbrella-shaped insection part to be detected.
Preferably, in the above apparatus for detecting an umbrella-shaped insection part, after the first cylinder is inserted into the central hole of the centering flange, a distance between the first cylinder and an inner wall of the central hole of the centering flange is 0.1 ± 0.02 mm.
Preferably, in the above detection device for the umbrella-shaped insection part, after the round bar is inserted into the insection groove of the umbrella-shaped insection part to be detected, the round bar does not protrude out of the insection top end of the insection groove of the umbrella-shaped insection part to be detected.
Preferably, in the above detection apparatus for an umbrella-shaped insection part, the number of the round bars is three, and when the round bars are inserted into an insection groove of the umbrella-shaped insection part to be detected, which is located between the centering flange and the stepped column, the three round bars are uniformly distributed along the same circumference.
Preferably, in the above detection apparatus for an umbrella-shaped insection part, after the cylindrical flange is inserted into the central hole of the umbrella-shaped insection part to be detected, a distance between the cylindrical flange and the inner wall of the central hole of the umbrella-shaped insection part to be detected is less than 0.05 mm.
Preferably, in the above detection device for the umbrella-shaped insection part, the baffle and the cylindrical flange are of an integral structure.
Preferably, in the above detection apparatus for an umbrella-shaped insection part, the first cylinder and the second cylinder are of an integral structure.
A detection method of the detection device for the umbrella-shaped insection part comprises the following steps:
inserting the cylindrical flange on the centering flange into a central hole of the umbrella-shaped insection part to be detected, and enabling the baffle to be abutted against the end part, far away from the insection, of the umbrella-shaped insection part to be detected;
respectively inserting at least three round bars into a plurality of insection grooves of an umbrella-shaped insection part to be detected;
inserting the first cylinder into the central hole of the centering flange, and enabling the edge of the end part of the second cylinder to be abutted against the round rods;
observing whether the at least three round bars can intersect at one point, and if the at least three round bars inserted into the multiple tooth groove of the umbrella-shaped tooth pattern part to be detected can intersect at one point, measuring the distance V from the intersection points of the at least three round bars to the baffle;
measuring the distance S from the end of the second cylinder facing away from the first cylinder to the baffle where the cylindrical flange is located.
Preferably, in the method for detecting an umbrella-shaped insection part, when the edge of the end of the second cylinder abuts against the round bar, a gap is formed between the second cylinder and the end, having the insection, of the umbrella-shaped insection part to be detected.
Preferably, in the method for detecting the umbrella-shaped insection part, after the round bar is inserted into the insection groove of the umbrella-shaped insection part to be detected, the round bar does not protrude out of the insection top end of the insection groove of the umbrella-shaped insection part to be detected.
When the detection device for the umbrella-shaped insection part provided by the embodiment is applied, the cylindrical flange on the centering flange is inserted into the central hole of the umbrella-shaped insection part to be detected, and the baffle is abutted against the end part, far away from the insection, of the umbrella-shaped insection part to be detected. And then inserting the round rods into the insection grooves of the umbrella-shaped insection part to be detected, wherein the round rods are required to be dispersedly inserted into the insection grooves, preferably uniformly distributed along the circumferential direction, and then inserting the first cylinder into the central hole of the centering flange, and enabling the outer edge of the second cylinder to be abutted against the round rods simultaneously. And observing whether the at least three round bars can intersect at one point, and if the at least three round bars inserted into the multiple tooth grooves of the umbrella-shaped tooth pattern part to be detected can intersect at one point, measuring the distance V from the intersection points of the at least three round bars to the baffle. The distance S from the end part of the second cylinder, which deviates from the first cylinder, to the end face, provided with the cylindrical flange, of the baffle can be measured, and the measured S and V are compared with a standard value to judge whether the umbrella-shaped insection part to be detected is qualified or not.
According to the detection device for the umbrella-shaped insection part, the structure is simple, the operation is simple and convenient, the measurement is convenient, the detection cost is greatly reduced, meanwhile, the insection meshing performance is simply measured through the linear dimension, the destructive dissection and the 3D scanning surveying and mapping of the insection part are avoided, and the detection time is saved.
In order to achieve the second object, the invention further provides a detection method of the umbrella-shaped insection part, which is performed based on the detection device, so that the detection method of the umbrella-shaped insection part also has corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side view of a centering flange provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a centering flange provided in accordance with an embodiment of the present invention;
FIG. 3 is a front view of a stair nosing provided in accordance with an embodiment of the present invention;
FIG. 4 is a front view of a scalloped component according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along A-A of FIG. 4;
FIG. 6 is a schematic diagram illustrating a detection device for an umbrella-shaped insection part according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an umbrella-shaped insection part inserted into a round bar according to an embodiment of the present invention.
In fig. 1-7:
1-centering flange, 1 a-cylindrical flange, 1 b-baffle, 2-stepped column, 2 a-first cylinder, 2 b-second cylinder, 3-round bar and 4-umbrella-shaped insection part to be detected.
Detailed Description
The first purpose of the present invention is to provide a detection device for a bevel-shaped insection part, which can effectively reduce the detection cost of the bevel-shaped insection part and save the detection time, and the second purpose of the present invention is to provide a detection method using the detection device for the bevel-shaped insection part.
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. 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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-7, the detecting device for an umbrella-shaped insection part provided by the invention comprises a centering flange 1, a stepped column 2 and at least three round bars 3. The umbrella-shaped insection part is a part with umbrella-shaped insections.
The centering flange 1 comprises a baffle plate 1b and a cylindrical flange 1a, wherein one end of the cylindrical flange 1a is fixedly connected with the baffle plate 1b, namely the baffle plate 1b and the cylindrical flange 1a are sequentially and fixedly connected along the axial direction. The centering flange 1 is provided with a center hole which penetrates through the baffle plate 1b and the cylindrical flange 1 a. The axis of the central hole coincides with the axis of the cylindrical flange 1a, and the central hole penetrates through the baffle plate 1b and the cylindrical flange 1 a.
The stair post 2 comprises a first cylinder 2a and a second cylinder 2b, and the first cylinder 2a and the second cylinder 2b are fixedly connected and coaxially arranged. The diameter of the first cylinder 2a is smaller than the diameter of the second cylinder 2b so that the first cylinder 2a and the second cylinder 2b together form the stepped string 2. The first cylinder 2a can be inserted into and clearance-fitted with the central hole of the centering flange 1, i.e. after the first cylinder 2a is inserted into the central hole of the centering flange 1, the first cylinder 2a is clearance-fitted with the central hole of the centering flange 1.
The round bar 3 is used for being inserted into a tooth pattern groove of the umbrella-shaped tooth pattern part 4 to be detected. When the cylindrical flange 1a is inserted into the central hole of the umbrella-shaped insection part 4 to be detected and the baffle 1b is abutted to the end part, far away from the insection, of the umbrella-shaped insection part 4 to be detected, the round bar 3 can be inserted into the insection groove of the umbrella-shaped insection part 4 to be detected, then the first cylinder 2a is inserted into the central hole of the centering flange 1 and the end part edge of the second cylinder 2b can be abutted to the round bar 3 inserted into the insection groove of the umbrella-shaped insection part 4 to be detected. The end edge of the second cylinder 2b refers to a circumferential edge of the second cylinder 2b close to the end of the first cylinder 2a, and one end of the side wall of the second cylinder 2b close to the first cylinder 2a is perpendicularly intersected with the end wall, so that a right angle is formed at a position where one end of the side wall of the second cylinder 2b close to the first cylinder 2a is intersected with the end wall, that is, a chamfer is not arranged between one end of the side wall of the second cylinder 2b close to the first cylinder 2a and the end wall.
When the detection device for the umbrella-shaped insection part provided by the embodiment is applied, firstly, the cylindrical flange 1a on the centering flange 1 is inserted into the central hole of the umbrella-shaped insection part 4 to be detected, and the baffle 1b is abutted to the end part, far away from insection, of the umbrella-shaped insection part 4 to be detected. Then, the round rods 3 are inserted into the tooth pattern grooves of the umbrella-shaped tooth pattern part 4 to be detected, a plurality of round rods 3 are dispersedly inserted into the plurality of tooth pattern grooves, preferably uniformly distributed along the circumferential direction, then the first cylinder 2a is inserted into the center hole of the centering flange 1, and the outer edge of the second cylinder 2b is abutted against the plurality of round rods 3 at the same time. And observing whether the at least three round bars 3 can intersect at one point, and if the at least three round bars 3 inserted into the multiple tooth grooves of the umbrella-shaped tooth pattern part 4 to be detected can intersect at one point, measuring the distance V from the intersection points of the at least three round bars 3 to the baffle 1 b. The distance S from the end part of the second cylinder 2b departing from the first cylinder 2a to the end face of the baffle 1b, which is provided with the cylindrical flange 1a, can be measured, and the measured S and V are compared with standard values to judge whether the umbrella-shaped insection part 4 to be detected is qualified.
According to the detection device for the umbrella-shaped insection part, the structure is simple, the operation is simple and convenient, the measurement is convenient, the detection cost is greatly reduced, meanwhile, the insection meshing performance is simply measured through the linear dimension, the destructive dissection and the 3D scanning surveying and mapping of the insection part are avoided, and the detection time is saved.
In order to ensure the detection accuracy, after the first cylinder 2a is inserted into the center hole of the centering flange 1, the distance between the first cylinder 2a and the inner wall of the center hole of the centering flange 1 is 0.1 ± 0.02 mm. I.e. the clearance between the first cylinder 2a and the inner wall of the central hole of the centering flange 1 is in the range of 0.1 + -0.02 mm to ensure the accuracy of the measurement during the measurement.
In order to ensure that the round bar 3 can be smoothly inserted into the insection groove, after the round bar 3 is inserted into the insection groove of the umbrella-shaped insection part 4 to be detected, the round bar 3 does not protrude out of the insection top end of the insection groove of the umbrella-shaped insection part 4 to be detected. Namely, after the round bar 3 is inserted into the insection groove of the umbrella-shaped insection part 4 to be detected, the distance between the part of the round bar 3 closest to the insection notch and the insection groove bottom is less than the insection height.
Preferably, the number of the round bars 3 is three, and when the round bars 3 are inserted into the serration groove of the umbrella-shaped serration part 4 to be detected between the centering flange 1 and the stepped column 2, the three round bars 3 are uniformly distributed along the same circumference. Of course, the number of the round rods 3 may be more than one, and is not limited herein.
Similarly, in order to ensure the detection accuracy, after the cylindrical flange 1a is inserted into the central hole of the umbrella-shaped insection part 4 to be detected, the distance between the cylindrical flange 1a and the inner wall of the central hole of the umbrella-shaped insection part 4 to be detected is less than 0.05mm, so as to ensure the measurement accuracy of the subsequent dimension.
The baffle 1b and the cylindrical flange 1a may be of one-piece construction for ease of manufacture. The baffle 1b may be a circular plate, but it is needless to say that the baffle 1b and the cylindrical flange 1a may be separately machined and welded together, and the invention is not limited thereto.
Likewise, the first cylinder 2a and the second cylinder 2b may be of an integral structure. Of course, the first cylinder 2a and the second cylinder 2b may be machined separately and then welded together, which is not limited herein.
Based on the detection device for the umbrella-shaped insection part provided in the embodiment, the invention also provides a detection method for the umbrella-shaped insection part, which comprises the following steps:
s1: inserting the cylindrical flange 1a on the centering flange 1 into the central hole of the umbrella-shaped insection part 4 to be detected, and enabling the baffle 1b to be abutted against the end part, far away from insection, of the umbrella-shaped insection part 4 to be detected
Namely, the cylindrical flange 1a on the centering flange 1 is inserted into the center hole of the umbrella-shaped insection part 4 to be detected from the end without insections, and the baffle 1b is abutted against the end part, far away from the insections, of the umbrella-shaped insection part 4 to be detected.
S2: at least three round bars 3 are respectively inserted into a plurality of insection grooves of the umbrella-shaped insection part 4 to be detected.
The round rods 3 are inserted into the tooth groove of the umbrella-shaped tooth pattern part 4 to be detected, and the round rods 3 are dispersedly inserted into the tooth grooves, preferably uniformly distributed along the circumferential direction.
S3: inserting the first cylinder 2a into the central hole of the centering flange 1, and enabling the edge of the end part of the second cylinder 2b to be abutted against the plurality of round rods 3;
even if the end edge of the second cylinder 2b abuts against a plurality of round bars 3 at the same time.
S4: and observing whether the at least three round bars 3 can intersect at one point, and if the at least three round bars 3 inserted into the multiple tooth grooves of the umbrella-shaped tooth pattern part 4 to be detected can intersect at one point, measuring the distance V from the intersection points of the at least three round bars 3 to the baffle 1 b.
S5: the distance S is measured from the end of the second cylinder 2b facing away from the first cylinder 2a to the baffle 1b where the cylindrical flange 1a is provided.
And comparing the S and the V with standard values to judge whether the umbrella-shaped insection part 4 to be detected is qualified.
In order to guarantee that the end edge of the second cylinder 2b can simultaneously abut against the plurality of round rods 3 and the end edge of the second cylinder 2b abuts against the round rods 3, when the end edge of the second cylinder 2b abuts against the round rods 3, a gap is formed between the second cylinder 2b and the end part, with the insection, of the umbrella-shaped insection part 4 to be detected, so that the end edge, with the insection, of the umbrella-shaped insection part 4 to be detected is prevented from influencing the end edge of the second cylinder 2b to abut against the plurality of round rods 3 simultaneously.
Further, in order to ensure that the round bar 3 can be smoothly inserted into the insection groove, after the round bar 3 is inserted into the insection groove of the umbrella-shaped insection part 4 to be detected, the round bar 3 does not protrude out of the insection top end of the insection groove of the umbrella-shaped insection part 4 to be detected. Namely, after the round bar 3 is inserted into the insection groove of the umbrella-shaped insection part 4 to be detected, the distance between the part of the round bar 3 closest to the insection notch and the insection groove bottom is less than the insection height.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A detection device for umbrella-shaped insection parts is characterized by comprising:
the centering flange (1) comprises a baffle plate (1b) and a cylindrical flange (1a) with one end fixedly connected with the baffle plate (1b), and a center hole penetrating through the baffle plate (1b) and the cylindrical flange (1a) is formed in the centering flange (1);
the step column (2) comprises a first cylinder (2a) and a second cylinder (2b) which are fixedly connected and coaxially arranged, the diameter of the first cylinder (2a) is smaller than that of the second cylinder (2b), and the first cylinder (2a) can be inserted into a central hole of the centering flange (1) and is in clearance fit with the central hole;
the positioning device comprises at least three round rods (3), wherein the cylindrical flange (1a) is inserted into a central hole of the umbrella-shaped insection part to be detected, when the baffle (1b) abuts against the end part, far away from insection, of the umbrella-shaped insection part to be detected, the round rods (3) can be inserted into insection grooves of the umbrella-shaped insection part to be detected, the first cylinder (2a) is inserted into the central hole of the centering flange (1), and the end edge of the second cylinder (2b) can abut against the round rods (3) inserted into insection grooves of the umbrella-shaped insection part to be detected; observing whether the at least three round bars (3) can intersect at one point, and if the at least three round bars (3) inserted into the multiple tooth grooves of the umbrella-shaped tooth pattern part to be detected can intersect at one point, measuring the distance V from the intersection points of the at least three round bars (3) to the baffle (1 b); measuring the distance S from the end of the second cylinder (2b) facing away from the first cylinder to the baffle (1b) where the cylindrical flange (1a) is provided.
2. The umbrella-shaped insection part detection device according to claim 1, characterized in that after the first cylinder (2a) is inserted into the central hole of the centering flange (1), the distance between the first cylinder (2a) and the inner wall of the central hole of the centering flange (1) is 0.1 ± 0.02 mm.
3. The detection device for the umbrella-shaped insection part according to claim 1, characterized in that after the round bar (3) is inserted into the insection groove of the umbrella-shaped insection part to be detected, the round bar (3) does not protrude out of the insection tip of the insection groove of the umbrella-shaped insection part to be detected.
4. The detection device of the umbrella-shaped insection part according to claim 1, characterized in that the number of the round bars (3) is three, and when the round bars (3) are inserted into the insection groove of the umbrella-shaped insection part to be detected between the centering flange (1) and the stepped column (2), the three round bars (3) are uniformly distributed along the same circumference.
5. The detection device for the umbrella-shaped insection part according to claim 1, characterized in that after the cylindrical flange (1a) is inserted into the central hole of the umbrella-shaped insection part to be detected, the distance between the cylindrical flange (1a) and the inner wall of the central hole of the umbrella-shaped insection part to be detected is less than 0.05 mm.
6. A detection device of an umbrella-shaped insection part according to any one of claims 1 to 5, characterized in that the baffle (1b) and the cylindrical flange (1a) are of a one-piece structure.
7. A detection device of an umbrella-shaped insection part according to any one of claims 1 to 5, characterized in that the first cylinder (2a) and the second cylinder (2b) are of a one-piece structure.
8. An inspection method using an inspection apparatus for umbrella-shaped insection parts according to any one of claims 1 to 7, comprising the steps of:
inserting a cylindrical flange (1a) on the centering flange into a center hole of the umbrella-shaped insection part to be detected, and enabling a baffle (1b) to be abutted against the end part, far away from insections, of the umbrella-shaped insection part to be detected;
respectively inserting at least three round bars (3) into a plurality of insection grooves of an umbrella-shaped insection part to be detected;
inserting the first cylinder into the central hole of the centering flange, and enabling the edge of the end part of the second cylinder (2b) to be abutted against the round rods (3);
observing whether the at least three round bars (3) can intersect at one point, and if the at least three round bars (3) inserted into the multiple tooth grooves of the umbrella-shaped tooth pattern part to be detected can intersect at one point, measuring the distance V from the intersection points of the at least three round bars (3) to the baffle (1 b);
measuring the distance S from the end of the second cylinder (2b) facing away from the first cylinder to the baffle (1b) where the cylindrical flange (1a) is provided.
9. The method for detecting the umbrella-shaped insection part according to claim 8, characterized in that when the edge of the end of the second cylinder (2b) is abutted against the round bar (3), a gap is formed between the second cylinder (2b) and the end of the umbrella-shaped insection part to be detected, which has insection.
10. The detection method of the umbrella-shaped insection part according to claim 8, characterized in that after the round bar (3) is inserted into the insection groove of the umbrella-shaped insection part to be detected, the round bar (3) does not protrude out of the insection tip of the insection groove of the umbrella-shaped insection part to be detected.
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| CN204286319U (en) * | 2014-12-10 | 2015-04-22 | 四川华庆机械有限责任公司 | Involute inner spline interrod spacing measurement mechanism |
| CN108692642A (en) * | 2018-06-08 | 2018-10-23 | 重庆望江工业有限公司 | Measure the gauge of internal spline stick spacing maximum and minimum value on part |
| CN109579666A (en) * | 2018-12-27 | 2019-04-05 | 恒锋工具股份有限公司 | A kind of internal spline stick spacing detection feeler gauge |
| CN209706715U (en) * | 2019-05-21 | 2019-11-29 | 青岛三星精锻齿轮有限公司 | Internal spline stick gap measuring device |
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| CN111207706A (en) | 2020-05-29 |
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Effective date of registration: 20220809 Address after: 266000 south side of Xinye road and west side of Herong Road, Qingdao high tech Industrial Development Zone, Qingdao, Shandong Province Patentee after: CRRC Brake System Co.,Ltd. Address before: 412001 Tianxin garden in Shi Feng District, Zhuzhou, Hunan Patentee before: CRRC ZHUZHOU LOCOMOTIVE Co.,Ltd. |