Thread run-out measuring tool and thread run-out measuring method
A thread and measuring tool technology, applied in the field of measurement, can solve problems such as inability to measure thread runout, and achieve the effect of simple structure and high detection efficiency
Inactive Publication Date: 2017-09-08
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0003] The invention provides a thread runout measuring tool and a thread runout measurement method to solve the technical problem that the thread runout cannot be measured when there are no tip holes at both ends of the bolt
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[0024] It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.
[0025] Such as figure 1 Wherein, the bolt 1 includes a nut 10, an assembling portion 11 and a threaded section 12, and the threaded section 12 is provided with threads (not shown) on its outer surface. The diameter of the nut 10 is the largest, the diameter of the assembling part 11 is smaller than the diameter of the nut 10, and the diameter of the threaded section 12 is smaller than the diameter of the assembling part 11. The outer surface of the assembling part 11 is a tapered surface 110, and the diameter of the left end of the assembling part 11 is larger than the diameter of the right end of the assembling part 11.
[0026] Reference figure 2 A preferred embodiment of the present in...
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The invention discloses a thread run-out measuring tool and a thread run-out measuring method, and is used for measuring thread run-out of a bolt. The thread run-out measuring tool comprises a V-shaped support block, a reducing nipple and a measuring ring, the internal part of the reducing nipple comprises a taper hole matched with a conical surface on the bolt, the periphery of the reducing nipple is used for being supported at a first cylindrical surface on the V-shaped support block, the internal part of the measuring ring is provided with a thread hole matched with threads of the bolt, the periphery of the measuring ring is used for allowing a measuring head of a dial gauge to be abutted against a measured second cylindrical surface, and the second cylindrical surface and the thread hole are coaxial. According to the thread run-out measuring tool and the thread run-out measuring method, the conical surface is converted to the first cylindrical surface having high coaxiality with the conical surface through the reducing nipple, and the reducing nipple is supported on the V-shaped support block so that the positioning of the bolt is realized; and the thread run-out is converted to the run-out of the second cylindrical surface having high coaxiality with the threads through the measuring ring so that the run-out value of the threads can be measured on the second cylindrical surface, and the problem of failure of measurement of the thread run-out of the bolt without a center hole is solved.
Description
Technical field [0001] The present invention relates to the field of measurement technology, in particular, to a thread runout measuring tool and a thread runout measuring method. Background technique [0002] The threads of aero-engine bolt parts have run-out requirements, and the outer surface of the bolt assembly part is a tapered surface. Therefore, when checking the thread run-out, it is required to use the tapered surface as a reference. Generally, the benchmark can be converted to the center holes at both ends of the bolt, but the center holes at both ends of the bolt are turned off during the processing of the bolt, which makes it impossible to check the thread runout when the bolt needs to be retested. Summary of the invention [0003] The invention provides a thread runout measuring tool and a thread runout measuring method, so as to solve the technical problem that the thread runout cannot be measured when there is no center hole at both ends of the bolt. [0004] The te...
Claims
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Login to View More IPC IPC(8): G01B5/00
CPCG01B5/003
Inventor 鲁攀周在飞李双全章灿林书琦
Owner CHINA HANGFA SOUTH IND CO LTD