Reducer housing center distance detection tool and detection method

Abstract

The invention discloses a reducer shell center distance testing fixture and a testing method. A first testing fixture comprises a first shaft used for being matched with a first mounting hole in a reducer shell and a first handle used for controlling the first testing fixture, and the first shaft and the first handle are fixed; the second testing fixture comprises a second shaft and a second handle used for controlling the second testing fixture, the second shaft and the second handle are fixed, and the circumferential surface of the second shaft is provided with a go gauge used for detecting whether the center distance between the first mounting hole and the second mounting hole is qualified when the go gauge is matched with the circumferential surface of the first shaft. The circumferential surface of the second shaft is further provided with a no-go gauge used for detecting whether the center distance between the first mounting hole and the second mounting hole is qualified when the no-go gauge is matched with the circumferential surface of the first shaft, the distance between the circumferential surface of the go gauge and the center of the second shaft is a first distance, the distance between the circumferential surface of the no-go gauge and the center of the second shaft is a second distance, and the first distance is smaller than the second distance. According to the invention, the center distance of the reducer housing can be rapidly detected.

Description

Technical Field

[0001] The present invention relates to the field of reducers, and in particular to a reducer housing center distance detection tool and a detection method. Background Art

[0002] The functions of the motor reducer housing mainly include the following aspects: Protect and support internal parts: The reducer housing, as the external load-bearing component of the reducer, plays a role in protecting and supporting internal parts. It fixes and protects transmission components such as gears and bearings, ensuring that they are not disturbed or damaged by the outside world during operation.

[0003] Ensuring transmission accuracy: The reducer housing, as the foundational component of various drive shafts, ensures the relative positional accuracy of each shaft. Because each shaft of the reducer transmits torque during operation and generates a significant reaction force on the housing, the housing must have sufficient rigidity to ensure transmission stability and efficiency.

[0004] Sealing and lubrication: The reducer housing typically seals the internal components, preventing moisture, dust, and other impurities from entering and preventing lubricant leakage. A well-designed housing can also improve lubrication and extend the reducer's service life.

[0005] like Figure 1 As shown, the reducer housing A is usually provided with a first mounting hole A1 and a second mounting hole A2. The first mounting hole A1 is arranged along the X direction of the reducer housing A, and the second mounting hole A2 is arranged along the Y direction of the reducer housing A. The reducer housing A is also provided with a through hole A3 that passes through the first mounting hole A1 and the second mounting hole A2. The power input assembly is installed in the first mounting hole A1, and the power output assembly is installed in the second mounting hole A2. The power input assembly is a worm, and the power output assembly consists of a worm wheel and an output shaft. Therefore, the power input assembly and the power output assembly are engaged through the worm wheel.

[0006] For the reducer housing A, the manufacturing accuracy of the first mounting hole A1 and the second mounting hole A2 is the key to ensuring whether the power input component and the power output component can be smoothly engaged, and whether power can be smoothly transmitted during operation. Therefore, after the reducer housing A is manufactured and formed, the center distance between the first mounting hole A1 and the second mounting hole A2 needs to be tested.

[0007] Existing methods for measuring the center distance of reducer housing A typically use three-dimensional coordinate measurement, which requires clamping, zeroing, and then three-dimensional coordinate measurement. This method requires high-precision equipment, is complex to operate, and requires calculation of test data based on measured data. Summary of the Invention

[0008] The present invention provides a reducer housing center distance detection tool and a detection method. The present invention can quickly detect the reducer housing center distance.

[0009] The center distance gauge of the reducer housing includes: A first inspection tool, the first inspection tool comprising a first shaft for engaging with a first mounting hole on the reducer housing, and a first handle for manipulating the first inspection tool, wherein the first shaft is fixed to the first handle; The second checking fixture includes a second shaft and a second handle for operating the second checking fixture. The second shaft is fixed to the second handle. A through gauge is provided on the circumferential surface of the second shaft for detecting whether the center distance between the first mounting hole and the second mounting hole is qualified when the through gauge is matched with the circumferential surface of the first shaft. A stop gauge is also provided on the circumferential surface of the second shaft for detecting whether the center distance between the first mounting hole and the second mounting hole is qualified when the stop gauge is matched with the circumferential surface of the first shaft. The distance between the circumferential surface of the through gauge and the center of the second shaft is a first distance, and the distance between the circumferential surface of the stop gauge and the center of the second shaft is a second distance. The first distance is smaller than the second distance.

[0010] The method for detecting the center distance of the reducer housing includes the following steps: S1, inserting the first shaft of the first gauge into the first mounting hole on the reducer housing, with a portion of the first gauge exposed to the second mounting hole through the through hole on the reducer housing; S2, inserting the second shaft of the second gauge into the second mounting hole on the reducer housing; S3. Apply torque to the second handle of the second gauge. During the process of rotating the second gauge, if the go gauge is obstructed by the first shaft when passing through the first shaft and the second gauge cannot continue to rotate, and / or if the stop gauge is not obstructed by the first shaft when passing through the first shaft and the second gauge continues to rotate, the reducer housing is defective.

[0011] When using the inspection tool of the present invention to inspect the center distance between the first mounting hole and the second mounting hole, it is only necessary to insert the first axis of the first inspection tool into the first mounting hole on the reducer housing, and insert the second axis of the second inspection tool into the second mounting hole on the reducer housing; then, a torque is applied to the second handle of the second inspection tool to rotate the second inspection tool. If the through gauge is obstructed by the first axis when passing through the first axis and the second inspection tool cannot continue to rotate, it means that the center distance between the first mounting hole and the second mounting hole is less than the design value. If the stop gauge is not obstructed by the first axis when passing through the first axis and the second inspection tool continues to rotate, it means that the center distance between the first mounting hole and the second mounting hole is greater than the design value. Therefore, in the process of rotating the second inspection tool, if the through gauge cannot pass or the stop gauge cannot stop, the reducer housing is judged to be an unqualified product.

[0012] From the above, it can be seen that the inspection fixture of the present invention is used to detect the center distance between the first mounting hole and the second mounting hole. Not only is the structure of the inspection fixture simple, and it can be used to determine whether the reducer housing is a qualified product without calculation, but the use process is also simple, which reduces the requirements for inspection personnel. Compared with the three-coordinate measurement method used in the background technology, it not only saves costs but also improves inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional view of the reducer housing.

[0014] Figure 2 This is a cross-sectional structural diagram of the reducer housing.

[0015] Figure 3 This is another cross-sectional structural diagram of the reducer housing.

[0016] Figure 4 This is a three-dimensional diagram of the first inspection fixture.

[0017] Figure 5 This is a three-dimensional diagram of the second inspection fixture.

[0018] Figure 6 This is a detailed top view of the second inspection.

[0019] Figure 7 This is a diagram of the coordination between the first and second inspection fixtures (the product being inspected is hidden).

[0020] Symbols in the accompanying drawings: Reducer housing A, first mounting hole A1, first hole A11, second hole A12, third hole A13, second mounting hole A2, first assembly hole A21, second assembly hole A22, third assembly hole A23, The first inspection tool 1 comprises a first shaft 11 , a first shaft segment 11 a , a second shaft segment 11 b , a third shaft segment 11 c , and a first handle 12 .

[0021] The second inspection fixture 2 comprises a second shaft 21, a first inspection shaft segment 21a, a second inspection shaft segment 21b, a coaxiality inspection component 21c, a second handle 22, a go gauge 23, a stop gauge 24, a first spacing L1, and a second spacing L2. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the examples of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other implementation methods can be obtained according to the drawings in the specification without any creative work. These implementation methods are still within the scope of protection of the claims of the present invention.

[0023] like Figures 1 to 7 The reducer housing center distance gauge of the present invention includes a first gauge 1 and a second gauge 2. The following describes each part and the relationship between them in detail.

[0024] The first inspection fixture 1 includes a first shaft 11 for engaging with a first mounting hole A1 on the reducer housing A, and a first handle 12 for operating the first inspection fixture 1. The first shaft 11 is fixed to the first handle 12. The first handle 12 has knurling on its circumference. When torque is manually applied to the first handle 12, the knurling can increase the friction between the operator's hand and the first handle 12.

[0025] First mounting hole A1 includes a first hole A11, a second hole A12, and a third hole A13. Second hole A12 is located between first hole A11 and third hole A13. The diameter of second hole A12 is smaller than that of first hole A11, and the diameter of second hole A12 is larger than that of third hole A13. First shaft 11 includes a first shaft segment 11a, a second shaft segment 11b, and a third shaft segment 11c. Second shaft segment 11b is located between first shaft segment 11a and third shaft segment 11c. One end of second shaft segment 11b is fixed to first shaft segment 11a, and the other end of second shaft segment 11b is fixed to third shaft segment 11c. The diameter of second shaft segment 11b is smaller than that of first shaft segment 11a, and the diameter of second shaft segment 11b is larger than that of third shaft segment 11c.

[0026] After the first inspection tool 1 is inserted into the first mounting hole A1, the third shaft segment 11c is matched with the third hole A13, the second shaft segment 11b is matched with the second hole A12, and the first shaft segment 11a is matched with the first shaft segment 11a. If the third shaft segment 11c can be smoothly inserted into the third hole A13, and the first shaft segment 11a can be smoothly inserted into the first hole A11, it means that the coaxiality of the first hole A11, the second hole A12 and the third hole A13 in the first mounting hole A1 is guaranteed. If, during the process of inserting the first shaft 11 into the first mounting hole A1, any section of the first shaft segment 11a, the second shaft segment 11b, and the third shaft segment 11c is stuck with the first mounting hole A1, or cannot be inserted, it means that there is a deviation in the coaxiality between the first hole A11 and the second hole A12 and / or the third hole A13. Therefore, in the present invention, the first shaft 11 is composed of a first shaft segment 11a, a second shaft segment 11b, and a third shaft segment 11c. In addition to cooperating with the second inspection fixture 2 to detect the center distance between the first mounting hole A1 and the second mounting hole A2, the first shaft 11 of this structure can also detect the coaxiality of the first mounting hole A1.

[0027] The second inspection tool 2 includes a second shaft 21 and a second handle 22 for operating the second inspection tool 2. The second shaft 21 is fixed to the second handle 22. The second handle 22 has knurling on its circumference. When a torque is manually applied to the second handle 22, the knurling can increase the friction between the operator's hand and the second handle 22.

[0028] A go gauge 23 is provided on the circumference of the second shaft 21 for detecting the center-to-center distance between the first mounting hole A1 and the second mounting hole A2 when mated with the circumference of the first shaft 11. A stop gauge 24 is also provided on the circumference of the second shaft 21 for detecting the center-to-center distance between the first mounting hole A1 and the second mounting hole A2 when mated with the circumference of the first shaft 11. The go gauge 23 and the stop gauge 24 are spaced 180 degrees apart in the circumferential direction. The spacing between the circumference of the go gauge 23 and the center of the second shaft 21 is a first spacing L1, and the spacing between the circumference of the stop gauge 24 and the center of the second shaft 21 is a second spacing L2, with the first spacing L1 being smaller than the second spacing L2.

[0029] In this embodiment, the difference between the second spacing L2 and the first spacing L1 is 0.05 mm. Therefore, in the absence of other markings, it is difficult to directly distinguish the go gauge 23 and the no-go gauge 24 from each other with the naked eye. Therefore, in this embodiment, the widths of the go gauge 23 and the no-go gauge 24 are unequal, and this difference in width allows inspectors to quickly distinguish between the go gauge 23 and the no-go gauge 24. For example, the width of the go gauge 23 is set to 14 mm, and the width of the no-go gauge 24 is set to 10 mm. In this way, during operation, when the second inspection fixture 2 is rotated, the inspector can intuitively see how the go gauge 23 or the no-go gauge 24 mates with the first shaft 11 as it passes through it, thereby immediately distinguishing whether it is the go gauge 23 or the no-go gauge 24 that is currently passing through the first shaft 11.

[0030] The second mounting hole A2 includes a first assembly hole A21, a second assembly hole A22, and a third assembly hole A23. The second assembly hole A22 is located between the first assembly hole A21 and the third assembly hole A23. The diameter of the second assembly hole A22 is smaller than the diameter of the first assembly hole A21, and the diameter of the second assembly hole A22 is larger than the diameter of the third assembly hole A23. The second shaft 21 includes a first detection shaft segment 21a and a second detection shaft segment 21b. One end of the second detection shaft segment 21b is fixed to the first detection shaft segment 21a, and the other end of the second detection shaft segment 21b is provided with a coaxiality detection component 21c. The diameter of the second detection shaft segment 21b is larger than the diameter of the first detection shaft segment 21a, and the radius of the second detection shaft segment 21b is smaller than the radius of the coaxiality detection component 21c.

[0031] After the second inspection tool 2 is inserted into the second mounting hole A2, the first inspection shaft segment 21a cooperates with the third assembly hole A23, the second inspection shaft segment 21b cooperates with the second assembly hole A22, and the coaxiality detection component 21c cooperates with the first assembly hole A21. If the first inspection shaft segment 21a can be smoothly inserted into the third assembly hole A23, and the coaxiality detection component 21c can be smoothly inserted into the first assembly hole A21, and no obstruction is generated between the coaxiality detection component 21c and the hole wall of the first assembly hole A21 during the rotation of the second inspection tool 2, it means that the coaxiality of the first assembly hole A21, the second assembly hole A22, and the third assembly hole A23 in the second mounting hole A2 is guaranteed. If any of the first detection shaft segment 21a, the second detection shaft segment 21b, or the coaxiality detection component 21c becomes stuck in the first mounting hole A1 or cannot be inserted during the insertion of the second inspection fixture 2 into the second mounting hole A2, it indicates that there is a coaxial deviation between the first assembly hole A21 and the second matching hole A22 and / or the third matching hole A23. Therefore, in addition to cooperating with the first inspection fixture 1 to detect the center distance between the first mounting hole A1 and the second mounting hole A2, the second inspection fixture 2 of the present invention can also detect the coaxiality of the second mounting hole A2.

[0032] The method for detecting the center distance of the reducer housing is performed using the above-mentioned reducer housing center distance detection fixture, and includes the following steps: S1, insert the first shaft 11 of the first inspection tool 1 into the first mounting hole A1 on the reducer housing A, and expose a portion of the first inspection tool 1 to the second mounting hole A2 through the through hole A3 on the reducer housing A; S2, insert the second shaft 21 of the second inspection fixture 2 into the second mounting hole A2 on the reducer housing A; S3. Apply torque to the second handle 22 of the second gauge 2. During the rotation of the second gauge 2, if the go gauge 23 is obstructed by the first shaft 11 when passing through the first shaft 11, preventing the second gauge 2 from continuing to rotate, and / or if the stop gauge 24 is not obstructed by the first shaft 11 when passing through the first shaft 11, allowing the second gauge 2 to continue to rotate, the reducer housing A is defective.

[0033] If the go gauge 23 is obstructed by the first shaft 11 when passing through it, preventing the second gauge 2 from continuing to rotate, it indicates that the center distance between the first mounting hole A1 and the second mounting hole A2 is less than the designed value. If the stop gauge 24 is not obstructed by the first shaft 11 when passing through it, allowing the second gauge 2 to continue to rotate, it indicates that the center distance between the first mounting hole A1 and the second mounting hole A2 is greater than the designed value. In either case, the reducer housing A is defective.

[0034] When using the above-mentioned inspection fixture, if the go gauge 23 is not affected by the first shaft 11 when passing through the first shaft 11 and the second inspection fixture 2 can continue to rotate, and the stop gauge 24 is blocked by the first shaft 11 when passing through the first shaft 11 and the second inspection fixture 2 cannot continue to rotate, this indicates that the reducer housing A is a qualified product.

Claims

1. Reducer housing center distance gauge, characterized by: include: A first inspection tool (1), the first inspection tool (1) comprising a first shaft (11) for cooperating with a first mounting hole (A1) on a reducer housing (A), and a first handle (12) for manipulating the first inspection tool (1), wherein the first shaft (11) and the first handle (12) are fixed; The second inspection tool (2) includes a second shaft (21) and a second handle (22) for operating the second inspection tool (2). The second shaft (21) is fixed to the second handle (22). A through gauge (23) is provided on the circumference of the second shaft (21) for detecting whether the center distance between the first mounting hole (A1) and the second mounting hole (A2) is qualified when the through gauge (23) is matched with the circumference of the first shaft (11). A stop gauge (24) is also provided on the circumference of the second shaft (21) for detecting whether the center distance between the first mounting hole (A1) and the second mounting hole (A2) is qualified when the stop gauge (24) is matched with the circumference of the first shaft (11). The distance between the circumference of the through gauge (23) and the center of the second shaft (21) is a first distance (L1), and the distance between the circumference of the stop gauge (24) and the center of the second shaft (21) is a second distance (L2). The first distance (L1) is smaller than the second distance (L2).

2. The reducer housing center distance measuring fixture according to claim 1, characterized in that: The first shaft (11) comprises a first shaft segment (11a), a second shaft segment (11b), and a third shaft segment (11c); the second shaft segment (11b) is located between the first shaft segment (11a) and the third shaft segment (11c); one end of the second shaft segment (11b) is fixed to the first shaft segment (11a); the other end of the second shaft segment (11b) is fixed to the third shaft segment (11c); the diameter of the second shaft segment (11b) is smaller than the diameter of the first shaft segment (11a), and the diameter of the second shaft segment (11b) is larger than the diameter of the third shaft segment (11c).

3. The reducer housing center distance measuring fixture according to claim 1, characterized in that: The widths of the through gauge (23) and the stop gauge (24) are not equal.

4. The reducer housing center distance measuring fixture according to claim 1, characterized in that: The difference between the second distance (L2) and the first distance (L1) is 0.05 mm.

5. The reducer housing center distance measuring tool according to claim 1, characterized in that: The through gauge (23) and the stop gauge (24) are spaced 180 degrees apart in the circumferential direction.

6. The reducer housing center distance measuring tool according to claim 1, characterized in that: The second shaft (21) comprises a first detection shaft segment (21a) and a second detection shaft segment (21b); one end of the second detection shaft segment (21b) is fixed to the first detection shaft segment (21a); the other end of the second detection shaft segment (21b) is provided with a coaxiality detection component (21c); the diameter of the second detection shaft segment (21b) is larger than the diameter of the first detection shaft segment (21a); and the radius of the second detection shaft segment (21b) is smaller than the radius of the coaxiality detection component (21c).

7. A method for detecting the center distance of a reducer housing, comprising the reducer housing center distance detection fixture according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, inserting the first shaft (11) of the first inspection tool (1) into the first mounting hole (A1) on the reducer housing (A), and exposing a portion of the first inspection tool (1) to the second mounting hole (A2) through the through hole (A3) on the reducer housing (A); S2, inserting the second shaft (21) of the second inspection tool (2) into the second mounting hole (A2) on the reducer housing (A); S3, applying a torque to the second handle (22) in the second inspection fixture (2). In the process of rotating the second inspection fixture (2), if the through gauge (23) is obstructed by the first shaft (11) when passing through the first shaft (11) and the second inspection fixture (2) cannot continue to rotate, and / or if the stop gauge (24) is not obstructed by the first shaft (11) when passing through the first shaft (11) and the second inspection fixture (2) continues to rotate, the reducer housing (A) is unqualified.

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