A planet gear hole width gauge

Abstract

The utility model discloses a kind of planet tooth upper inner hole groove width's testing tool, including the detection handle convenient to hand, the detection handle left end is provided with detection block by detachable structure, the detection block includes the detection block main body for being installed on detection handle, the upper end of the detection block main body extends outward and forms detection terminal, the lower end of the detection block main body extends outward and forms detection end, and the distance between the end of detection end and the end of detection terminal is less than the inner diameter of the inner hole of the reduction gear to be detected. When detecting, first, detection terminal is stretched into inner hole groove and rotated a circle, then, whether detection end can be stretched in is observed, if it is satisfied, it is qualified, if it is not satisfied, it is unqualified, the testing tool of the application, detection difficulty is low, the requirement to worker is not high, and detection efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of internal hole groove detection equipment, specifically relating to a gauge for measuring the width of the internal hole groove on a planetary gear. Background Technology

[0002] In automotive transmission housings, to facilitate the installation of planetary gears and corresponding shafts, internal holes for mounting shafts are provided within the planetary gears. Simultaneously, internal grooves for mounting oil seals are provided at both ends of the planetary gears. To reduce oil seal wobble, the width of these internal grooves must be within a specified range, meaning high precision is required. Current technology involves using a profilometer to trace the shape and then measuring its width for inspection, ensuring the machined internal grooves meet precision requirements. However, this inspection method is not only demanding on the inspectors but also inefficient. Utility Model Content

[0003] This utility model aims to provide a gauge for measuring the width of the inner groove on a planetary tooth, which can realize the measurement of the width of the inner groove on the planetary tooth. It is not only simple to operate, but also has high measurement efficiency.

[0004] Therefore, the technical solution adopted by this utility model is as follows: a gauge for measuring the width of the inner hole groove on a planetary gear, including a hand-held inspection handle, a detection block is provided on the left end of the inspection handle through a detachable structure, the inspection block includes a main body for mounting on the inspection handle, the upper end of the main body of the inspection block extends outward to form a detection through end, the lower end of the main body of the inspection block extends outward to form a detection stop end, and the distance between the end of the detection stop end and the end of the detection through end is less than the inner diameter of the inner hole of the deceleration gear to be inspected.

[0005] As a preferred embodiment of the above scheme, the main body of the detection block is configured as a hexahedron formed by parallel and identical isosceles trapezoids, parallel rectangles with the left side larger than the right side, and upper and lower trapezoids. The left end of the detection handle is provided with a mounting cylinder for mounting the detection block, and the mounting cylinder is provided with a mounting through groove for the detection block main body to be inserted into.

[0006] In a further preferred embodiment, the detachable structure includes a mounting bolt, a threaded hole at the left end of the detection handle, and a threaded through hole in the middle of the detection block body. The mounting bolt can pass through the threaded through hole and be tightened into the threaded hole, thereby realizing the installation between the detection block and the detection handle.

[0007] Further preferably, the right end of the detection handle is provided with a knurled end, and a circumferential relief groove is provided between the knurled end and the left end.

[0008] In a further preferred embodiment, both the right root of the detection stop end and the right root of the detection pass end are provided with machining clearance grooves.

[0009] Further preferably, the thickness tolerance of both the detection stop end and the detection pass end does not exceed 0.003 mm.

[0010] Further preferably, a machining groove is provided on the left end face of the detection block body to reduce the machining surface.

[0011] The beneficial effects of this utility model are: 1) During testing, first insert the test end into the inner groove and rotate it once. Then check if the test stop end can be inserted. If it can, it is qualified; otherwise, it is unqualified. The inspection tool of this application has low testing difficulty, low requirements for workers, and high testing efficiency.

[0012] 2) The detection block is installed on the detection handle through a detachable structure, which allows it to be replaced according to the size of the inner hole groove, so that the entire fixture can adapt to the detection of inner hole grooves of different specifications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the detection block in this utility model (the left image is the main view, and the right image is the side view).

[0015] Figure 3 This is a schematic diagram of the detection handle in this utility model (the left image is the main view, and the right image is the side view).

[0016] Figure 4 This is a schematic diagram of the testing process of this utility model.

[0017] Reference numerals: Detection handle-10, Mounting cylinder-11, Mounting through groove-12, Knurled end-13, Circumferential relief groove-14, Detection block-20, Detection block body-21, Detection through end-22, Detection stop end-23, Machining relief groove-24, Machining countersunk groove-25, Mounting bolt-30, Planetary gear-40. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments and accompanying drawings: like Figure 1-4As shown, a gauge for measuring the width of the inner groove on a planetary gear mainly consists of a measuring handle 10 and a measuring block 20. The measuring block 20 is detachably mounted on the left end of the measuring handle 10, which facilitates handheld measurement. To achieve the measurement function, the measuring block 20 includes a measuring block body 21 for mounting on the measuring handle 10. A measuring through end 22 extends outward from the upper end of the measuring block body 21, and a measuring stop end 23 extends outward from the lower end of the measuring block body 21. The distance between the end of the measuring stop end 23 and the end of the measuring through end 22 is less than the inner diameter of the inner hole of the deceleration gear to be measured, facilitating insertion into the inner hole of the planetary gear 40 for measuring the inner groove.

[0019] Because the thickness of the detection stop end and the detection through end is small, in order to ensure the overall hardness, the detection block body 21 is set as a hexahedron formed by parallel and identical isosceles trapezoids, parallel rectangles with the left side larger than the right side, and upper and lower trapezoids. At the same time, a mounting cylinder 11 for mounting the detection block 20 is provided at the left end of the detection handle 10, and a mounting through groove 12 for the detection block body 21 to be inserted is provided on the mounting cylinder 11.

[0020] The detachable structure includes a mounting bolt 30, a threaded hole at the left end of the detection handle 10, and a threaded through hole in the middle of the detection block body 21. The mounting bolt 30 can pass through the threaded through hole and be tightened in the threaded hole, thereby realizing the installation between the detection block 20 and the detection handle 10.

[0021] To facilitate handheld testing, a knurled end 13 is provided on the right end of the testing handle 10, and an circumferential clearance groove 14 is provided between the knurled end 13 and the left end.

[0022] The thickness tolerance of the detection stop end 23 and the detection through end 22 does not exceed 0.003mm. Due to the high precision of the left end of the detection block, in order to facilitate processing, a machining clearance groove 24 is provided at the root of the right side face of the detection stop end 23 and the root of the right side face of the detection through end 22. At the same time, a machining countersink 25 is provided on the left end face of the detection block body 21 to reduce the machining surface.

Claims

1. A gauge for measuring the width of the inner groove on a planetary tooth, characterized in that: The device includes a handheld detection handle (10), and a detection block (20) is provided on the left end of the detection handle (10) via a detachable structure. The detection block (20) includes a detection block body (21) for mounting on the detection handle (10). The upper end of the detection block body (21) extends outward to form a detection through end (22), and the lower end of the detection block body (21) extends outward to form a detection stop end (23). The distance between the end of the detection stop end (23) and the end of the detection through end (22) is less than the inner diameter of the inner hole of the deceleration gear to be detected.

2. The gauge for measuring the width of the inner slot on a planetary tooth according to claim 1, characterized in that: The main body (21) of the detection block is configured as a hexahedron formed by a parallel and identical isosceles trapezoid, a parallel rectangle with the left side larger than the right side, and an upper and lower trapezoid. The left end of the detection handle (10) is provided with an installation cylinder (11) for the detection block (20) to be installed. The installation cylinder (11) is provided with an installation through groove (12) for the detection block main body (21) to be inserted into.

3. The gauge for measuring the width of the inner groove on a planetary tooth according to claim 1, characterized in that: The detachable structure includes a mounting bolt (30), a threaded hole is provided at the left end of the detection handle (10), and a threaded through hole is provided in the middle of the detection block body (21). The mounting bolt (30) can pass through the threaded through hole and be tightened in the threaded hole, thereby realizing the installation between the detection block (20) and the detection handle (10).

4. The gauge for measuring the width of the inner slot on a planetary tooth according to claim 1, characterized in that: The right end of the detection handle (10) is provided with a knurled end (13), and a circumferential relief groove (14) is provided between the knurled end (13) and the left end.

5. The gauge for measuring the width of the inner groove on a planetary tooth according to claim 1, characterized in that: Both the right root of the detection stop (23) and the right root of the detection through (22) are provided with machining clearance grooves (24).

6. The gauge for measuring the width of the inner slot on a planetary tooth according to claim 1, characterized in that: The thickness tolerance of the detection stop end (23) and the detection through end (22) is not more than 0.003 mm.

7. The gauge for measuring the width of the inner slot on a planetary tooth according to claim 1, characterized in that: The left end face of the detection block body (21) is provided with a machining groove (25) for reducing the machining surface.

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