A cone-mouth comprehensive size go / no-go gauge inspection tool and its inspection method

Abstract

The invention provides a go / no-go gauge inspection tool for a tapered mouth with comprehensive dimensions and an inspection method thereof, belonging to the technical field of synchronizer friction cone ring inspection, comprising a go / no-go gauge, a core shaft, a positioning cone and an inspection platform; a first through hole is arranged on the inspection platform, one end of the core shaft passes through the first through hole, and the other end is connected to the inspection platform; the positioning cone is a cone ring structure, located above the inspection platform and coaxially connected to the core shaft, the taper of the positioning cone is the same as the taper of a standard friction cone ring, when in use, the go / no-go gauge detects the spacing between the lower end face of the friction cone ring to be tested and the upper end face on the inspection platform, the friction cone ring is positioned by the positioning cone, and the go / no-go gauge is used to inspect whether the tapered mouth size of the friction cone ring is qualified, the inspection result is accurate, the structure is simple, the cost is low, and the tool is suitable for use in mass production.

Description

Technical Field

[0001] The invention relates to the technical field of synchronizer friction cone ring detection, in particular to a cone-mouth comprehensive size go / no-go gauge inspection tool and a detection method thereof. Background Art

[0002] In the production of synchronizer friction cone rings, it is often necessary to detect the size of the synchronizer friction cone rings, such as Figure 1 As shown in the figure, the inner diameter D of the cone mouth of the synchronizer friction cone ring is an important detection index, and this dimension should be checked frequently during production and processing.

[0003] Since the synchronizer friction cone ring is chamfered at the inner diameter during processing, direct measurement is difficult. Currently, it is mainly measured through three-coordinate measurement or special machine detection. However, three-coordinate measurement will lead to large measurement errors due to the rough surface of the bonded friction cone ring. The use of special machine for measurement is costly and not suitable for mass production detection due to the structure of the special machine itself. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a cone-mouth comprehensive size go / no-go gauge inspection tool and a detection method thereof, which has a simple structure, accurate detection results and low cost, and is suitable for mass production and detection.

[0005] The present invention is achieved through the following technical solutions:

[0006] On the one hand, the present invention provides a go / no-go gauge inspection tool for a tapered integrated size, comprising a go / no-go gauge, a mandrel, a positioning cone and an inspection platform;

[0007] The inspection platform is provided with a first through hole, one end of the mandrel passes through the first through hole, and the other end is connected to the inspection platform;

[0008] The positioning cone is a conical ring structure, which is located above the inspection platform and coaxially connected to the core shaft. The taper of the positioning cone is the same as the taper of the standard friction cone ring. When in use, the go / no-go gauge detects the distance between the lower end face of the friction cone ring being tested and the upper end face of the inspection platform.

[0009] Optionally, it also includes a counterweight cover, which is provided with a second through hole. When in use, the counterweight cover is sleeved on the core shaft through the second through hole, and the lower end surface of the counterweight cover is pressed on the upper end surface of the friction cone ring to be measured.

[0010] Optionally, it also includes a cushion block, which is an annular structure and is located between the inspection platform and the positioning cone and is coaxially connected to the core shaft.

[0011] Optionally, the positioning cone and the cushion block are connected by bolts.

[0012] Optionally, the cone angle of the positioning cone is 8°.

[0013] Optionally, the height of the go gauge is H-0.07 mm, and the height of the stop gauge is H+0.07 mm, wherein H is the distance from the lower surface of the positioning cone to the upper surface of the inspection platform.

[0014] Optionally, a boss is provided on the joint surface of the positioning cone and the cushion block, and the diameter value of the theoretical intersection line where the joint surface of the boss and the cushion block intersects with the conical surface of the positioning cone is the same as the theoretical large end diameter value of the friction cone ring to be measured.

[0015] Optionally, a step is provided at the lower end of the first through hole of the inspection platform, a threaded hole is provided on the step, the core shaft is a stepped shaft, and the lower end of the core shaft is connected to the inspection platform by bolts.

[0016] On the other hand, the present invention provides a detection method based on a cone-mouth comprehensive size go / no-go gauge inspection fixture, characterized in that it comprises:

[0017] Install the friction cone ring to be tested on the positioning cone, and use the go / no-go gauge to check the gap between the lower end face of the friction cone ring to be tested and the upper end face of the testing platform;

[0018] If the through gauge can pass through the gap between the lower end face of the friction cone ring being tested and the upper end face of the inspection platform, and the stop gauge cannot pass through the gap between the lower end face of the friction cone ring being tested and the upper end face of the inspection platform, the taper size of the friction cone ring being tested is qualified;

[0019] If the through gauge cannot pass through the gap between the lower end face of the friction cone ring being tested and the upper end face of the inspection platform, or the stop gauge can pass through the gap between the lower end face of the friction cone ring being tested and the upper end face of the inspection platform, the cone size of the friction cone ring being tested is unqualified.

[0020] Optionally, before installing the friction cone ring to be tested on the positioning cone, the method further includes: cleaning the friction cone ring to be tested and a go / no-go gauge for the cone mouth comprehensive size.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] The invention provides a go / no-go gauge inspection tool for a cone mouth with comprehensive dimensions, comprising a go / no-go gauge, a core shaft, a positioning cone and an inspection platform; a first through hole is arranged on the inspection platform, one end of the core shaft passes through the first through hole, and the other end is connected to the inspection platform; the positioning cone is a cone ring structure, which is located above the inspection platform and coaxially connected to the core shaft, the taper of the positioning cone is the same as the taper of a standard friction cone ring, when in use, the go / no-go gauge detects the distance between the lower end face of the friction cone ring to be tested and the upper end face on the inspection platform, the friction cone ring is positioned by the positioning cone, and the go / no-go gauge is used to check whether the cone mouth size of the friction cone ring is qualified, the detection result is accurate, the structure is simple, the cost is low, and the tool is suitable for use in mass production.

[0023] Furthermore, the friction cone ring to be tested is pressed down by a counterweight cover to prevent the test result from being affected by the back side friction movement.

[0024] The detection method based on the cone mouth comprehensive size go and no-go gauge inspection tool provided by the present invention comprises the following steps: mounting the friction cone ring to be tested on a positioning cone, and inspecting the gap between the lower end face of the friction cone ring to be tested and the upper end face of an inspection platform by using the go and no-go gauges; if the go gauge can pass through the gap between the lower end face of the friction cone ring to be tested and the upper end face of the inspection platform and the no-go gauge cannot pass through the gap between the lower end face of the friction cone ring to be tested and the upper end face of the inspection platform, the cone mouth size of the friction cone ring to be tested is qualified; if the go gauge cannot pass through the gap between the lower end face of the friction cone ring to be tested and the upper end face of the inspection platform or the no-go gauge can pass through the gap between the lower end face of the friction cone ring to be tested and the upper end face of the inspection platform, the cone mouth size of the friction cone ring to be tested is unqualified, the detection process is simple, the result is intuitive, the detection cost is low, and the method is suitable for use in mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A structural schematic diagram of a friction cone ring provided by the prior art;

[0026] Figure 2 A schematic diagram of a cone-mouth comprehensive size go / no-go gauge provided in an embodiment of the present invention

[0027] In the figure: 1. go / no-go gauge, 2. mandrel, 3. spacer, 4. positioning cone, 5. counterweight cover, 6. inspection platform, 7. friction cone ring. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0029] Figure 2 Schematic diagram of the structure of a cone-mouth comprehensive size go / no-go gauge provided by an embodiment of the present invention. Figure 1 As shown, a cone-mouth comprehensive size go / no-go gauge inspection tool comprises a go / no-go gauge 1, a mandrel 2, a positioning cone 4, a counterweight cover 5, a cushion block 3 and an inspection platform 6;

[0030] The inspection platform 6 is provided with a first through hole, one end of the mandrel 2 passes through the first through hole, and the other end is connected to the inspection platform 6;

[0031] The spacer 3 is an annular structure, located between the inspection platform 6 and the positioning cone 4 and coaxially connected to the core shaft 2;

[0032] The positioning cone 4 is a conical ring structure, located above the cushion block 3 and coaxially connected to the core shaft 2. The taper of the positioning cone 4 is the same as the taper of the standard friction cone ring. When in use, the go / no-go gauge 1 detects the distance between the lower end face of the friction cone ring 7 to be tested and the upper end face of the inspection platform 6.

[0033] The counterweight cover 5 is provided with a second through hole. When in use, the counterweight cover 5 is sleeved on the core shaft 2 through the second through hole, and the lower end surface of the counterweight cover 5 is pressed on the upper end surface of the friction cone ring 7 to be tested. In order to prevent the friction cone ring 7 to be tested from moving under the drive of the go / no-go gauge 1 during testing, the friction cone ring 7 to be tested is pressed by the counterweight cover 5.

[0034] The taper of the positioning cone 4 is the same as that of the standard friction cone ring, and the outer diameter of the large end is the same as the inner diameter of the large end of the friction cone ring. In order to ensure the accuracy of the measurement, the through hole on the positioning cone 4 is perpendicular to the lower end surface. The positioning cone 4 and the cushion block 3 are connected by bolts. Of course, in practical applications, the connection method can also be welding, riveting or adhesive connection, etc., which is not specifically limited in the embodiment of the present invention.

[0035] The lower end of the first through hole of the inspection platform 6 is provided with a step, and a threaded hole is provided on the step. The core shaft 2 is a stepped shaft, and the lower end of the core shaft 2 is connected to the inspection platform 6 by bolts.

[0036] A boss is designed on the joint surface of the positioning cone 4 and the cushion block 3, and the boss thickness is 1mm. The theoretical point value of the intersection between the theoretical joint surface of the positioning cone 4 and the cushion block 3 and the cone surface of the positioning cone 4 is the theoretical large end diameter size of the friction cone ring 7 to be tested. This is to avoid interference between the positioning cone 4 and the go / no-go gauge 1 during testing.

[0037] For the friction cone ring with a cone angle of 8°, during inspection, the cone angle of the positioning cone 4 is designed to be 8°. During inspection, the inner diameter size of the friction cone ring is required to have an error not exceeding plus or minus 0.01mm. Since the cone angle is 8°, the inner diameter error of the cone mouth is converted into a height error. The height tolerance is calculated to be ±0.01 / tan8°, i.e. ±0.07mm. When the height error of the friction cone ring does not exceed ±0.07mm, the friction cone ring passes the inspection.

[0038] When designing a cone-mouth comprehensive size go and no-go gauge inspection fixture provided by the present invention, according to the above principle, it can be obtained that the height of the go gauge is H-0.07mm, and the height of the no-go gauge is H+0.07mm, wherein H is the distance from the lower surface of the boss of the positioning cone 4 to the upper surface of the inspection platform 6. At this time, when the go gauge can pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6 and the no-go gauge cannot pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6, the cone-mouth size of the friction cone ring 7 to be measured is qualified; when the go gauge cannot pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6 or the no-go gauge can pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6, the cone-mouth size of the friction cone ring 7 to be measured is unqualified.

[0039] It should be noted that when no boss is provided on the lower end surface of the positioning cone, H is the distance from the lower surface of the positioning cone 4 to the upper surface of the inspection platform 6; when a boss is provided on the lower end surface of the positioning cone, H is the distance from the lower surface of the boss of the positioning cone 4 to the upper surface of the inspection platform 6.

[0040] During installation, the non-stepped end of the mandrel 2 passes through the first through hole on the inspection platform 6, and the stepped end of the mandrel 2 is connected to the step of the first through hole by bolts. The cushion block 3 is inserted into the mandrel 2 through the upper end of the mandrel 2, and the lower end face contacts the upper end face of the inspection platform 6. The positioning cone 4 is inserted into the mandrel 2 through the upper end of the mandrel 2, and the lower end face contacts the upper end face of the cushion block 3. The positioning cone 4 and the cushion block 3 are connected by bolts. It should be noted that the positioning cone 4 is installed with the large end facing downward. The friction cone ring 7 to be measured is inserted into the positioning cone 4 with the large end facing downward, and the counterweight cover 5 is sleeved on the mandrel 2, and the lower end face contacts the upper end face of the friction cone ring 7 to be measured.

[0041] It is worth noting that in order to ensure the accuracy of the test results, during installation, the upper end surface of the test platform, the lower end surface of the positioning cone 4, the upper and lower end surfaces of the friction cone ring 7 to be tested, and the lower end surface of the counterweight cover 5 need to be parallel.

[0042] The embodiment of the present invention provides a detection method based on a cone-mouth comprehensive size go / no-go gauge inspection fixture, comprising:

[0043] The friction cone ring 7 to be tested is mounted on the positioning cone 4, and the clearance between the lower end surface of the friction cone ring 7 to be tested and the upper end surface of the testing platform 6 is tested by the go / no-go gauge 1;

[0044] If the go gauge can pass through the gap between the lower end surface of the friction cone ring 7 and the upper end surface of the inspection platform 6, and the stop gauge cannot pass through the gap between the lower end surface of the friction cone ring 7 and the upper end surface of the inspection platform 6, the taper size of the friction cone ring 7 is qualified;

[0045] If the go gauge cannot pass through the gap between the lower end face of the friction cone ring 7 and the upper end face of the inspection platform 6, or the stop gauge can pass through the gap between the lower end face of the friction cone ring 7 and the upper end face of the inspection platform 6, the cone size of the friction cone ring 7 is unqualified.

[0046] Among them, before testing, the friction cone ring and the cone mouth comprehensive size go / no-go gauge to be tested need to be cleaned to ensure that there are no impurities on the surface of the friction cone ring and the cone mouth comprehensive size go / no-go gauge to be tested, so as to prevent impurities from affecting the test results.

[0047] The detection principle of the detection method is as follows: for the friction cone ring with a cone angle of α, during inspection, the cone angle of the positioning cone 4 is designed to be α, and the inner diameter size error of the friction cone ring is required to be no more than plus or minus 0.01mm during inspection. Since the cone angle is α, the inner diameter error of the cone mouth is converted into a height error, and the height direction tolerance is calculated to be ±0.01 / tanαmm. When the height error of the friction cone ring does not exceed ±0.01 / tanαmm, the friction cone ring passes the inspection.

[0048] When designing a cone-mouth comprehensive size go and no-go gauge inspection fixture provided by the present invention, according to the above principle, it can be obtained that the height of the go gauge is H-0.01 / tanαmm, and the height of the no-go gauge is H+0.01 / tanαmm, wherein H is the distance from the lower surface of the positioning cone 4 to the upper surface of the inspection platform 6. At this time, when the go gauge can pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6 and the no-go gauge cannot pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6, the cone-mouth size of the friction cone ring 7 to be measured is qualified; when the go gauge cannot pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6 or the no-go gauge can pass through the gap between the lower end face of the friction cone ring 7 to be measured and the upper end face of the inspection platform 6, the cone-mouth size of the friction cone ring 7 to be measured is unqualified.

[0049] The specific embodiments of the present invention are merely an interpretation of the spirit of the invention. Those skilled in the art of the present invention may modify the described specific embodiments or replace them with similar methods without departing from the spirit of the present invention.

Claims

1. A cone-mouth comprehensive size go / no-go gauge, characterized in that: It comprises a go / no-go gauge (1), a mandrel (2), a positioning cone (4) and an inspection platform (6); The inspection platform (6) is provided with a first through hole, one end of the core shaft (2) passes through the first through hole, and the other end is connected to the inspection platform (6); The positioning cone (4) is a conical ring structure, located above the inspection platform (6) and coaxially connected to the core shaft (2), the taper of the positioning cone (4) is the same as the taper of the standard friction cone ring, and when in use, the go / no-go gauge (1) detects the distance between the lower end surface of the friction cone ring (7) to be tested and the upper end surface of the inspection platform (6); It also comprises a counterweight cover (5), wherein the counterweight cover (5) is provided with a second through hole. When in use, the counterweight cover (5) is sleeved on the core shaft (2) through the second through hole, and the lower end surface of the counterweight cover (5) is pressed against the upper end surface of the friction cone ring (7) to be measured; It also includes a cushion block (3), which is an annular structure and is located between the inspection platform (6) and the positioning cone (4) and is coaxially connected to the core shaft (2); The cone angle of the positioning cone (4) is 8°; The height of the through gauge is H-0.07 mm, and the height of the stop gauge is H+0.07 mm, wherein H is the distance from the lower surface of the positioning cone (4) to the upper surface of the inspection platform (6).

2. A cone-mouth comprehensive size go / no-go gauge as claimed in claim 1, characterized in that: The positioning cone (4) and the cushion block (3) are connected by bolts.

3. A cone-mouth comprehensive size go / no-go gauge as claimed in claim 2, characterized in that: A boss is provided on the joint surface of the positioning cone (4) and the cushion block (3), and the diameter value of the theoretical intersection line where the joint surface of the boss and the cushion block (3) intersects with the cone surface of the positioning cone (4) is the same as the theoretical large end diameter value of the friction cone ring (7) to be measured.

4. A cone-mouth comprehensive size go / no-go gauge as claimed in claim 1, characterized in that: The lower end of the first through hole of the inspection platform (6) is provided with a step, and a threaded hole is provided on the step. The mandrel (2) is a stepped shaft, and the lower end of the mandrel (2) is connected to the inspection platform (6) via bolts.

5. A method for detecting a cone-mouth comprehensive size go / no-go gauge according to any one of claims 1 to 4, characterized in that: include: The friction cone ring (7) to be tested is mounted on the positioning cone (4), and the clearance between the lower end surface of the friction cone ring (7) to be tested and the upper end surface of the testing platform (6) is tested by means of a go / no-go gauge (1); If the through gauge can pass through the gap between the lower end surface of the friction cone ring (7) being tested and the upper end surface of the inspection platform (6), and the stop gauge cannot pass through the gap between the lower end surface of the friction cone ring (7) being tested and the upper end surface of the inspection platform (6), then the taper size of the friction cone ring (7) being tested is qualified; If the through gauge cannot pass through the gap between the lower end surface of the friction cone ring (7) being tested and the upper end surface of the inspection platform (6), or the stop gauge can pass through the gap between the lower end surface of the friction cone ring (7) being tested and the upper end surface of the inspection platform (6), the taper size of the friction cone ring (7) being tested is unqualified.

6. The method according to claim 5, characterized in that Before the friction cone ring (7) to be tested is installed on the positioning cone (4), the method further comprises: cleaning the friction cone ring (7) to be tested and a cone mouth comprehensive size go / no-go gauge inspection tool.

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