A measuring gauge

Abstract

The utility model belongs to the field of measurement technology discloses a kind of measuring gauges, measuring gauge is used to measure special-shaped shaft, special-shaped shaft includes shaft body and the first rotary arm and at least two second rotary arms of being arranged on shaft body, second rotary arm is opened with perforation, measuring gauge includes base and the lock piece of detachably being arranged on base, positioning member and positioning pin, base is opened with the accommodating groove for being set with support for shaft body, lock piece is used to press into accommodating groove with shaft body, positioning member is used to with first rotary arm abut, to measure the angle of first rotary arm relative to second rotary arm, positioning pin is used to set multiple perforations, to measure the coaxiality of multiple perforations. The utility model provides measuring gauge, can be specially carried out to special-shaped shaft fast size measurement, satisfy the requirement of product quality rapid detection.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, and in particular to a measuring gauge. Background Technology

[0002] In the Ex9M6 plastic-cased product, the internal irregularly shaped shaft is a core component. See details... Figure 1 As shown, the irregular shaft 5 includes a shaft body 51 and a first rotating arm 52 and a second rotating arm 53 disposed on the shaft body 51. There are at least multiple second rotating arms 53, each with a through hole 531. The dimensional accuracy of the irregular shaft 5 directly affects the product's assembly, service life, and overtravel performance. In particular, the angle between the first rotating arm 52 and the second rotating arm 53, and the coaxiality of the through holes in the multiple second rotating arms 53, are critical dimensions. Their dimensional stability directly affects the shaft's performance, thus impacting the reliability of the plastic-cased product.

[0003] In the existing technology, due to the special size of the irregular shaft 5, it is impossible to detect the external dimensions using vernier calipers or image measuring instruments. The measurement of the irregular shaft 5 is difficult, resulting in unstable dimensional accuracy of batches of irregular shaft 5, which cannot fully meet the quality requirements of mass production. Utility Model Content

[0004] The purpose of this invention is to provide a measuring tool that can quickly measure the dimensions of irregular shafts to meet product quality requirements.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A measuring fixture is used to measure an irregularly shaped shaft. The irregularly shaped shaft includes a shaft body and a first rotating arm and at least two second rotating arms disposed on the shaft body. Each second rotating arm has a through hole. The measuring fixture includes a base and a locking member, a positioning member, and a positioning pin detachably disposed on the base.

[0007] The base has a receiving groove for the shaft to pass through and be supported;

[0008] The locking member is used to press the shaft into the receiving groove;

[0009] The positioning element is used to abut against the periphery of the first rotating arm to measure the angle of the first rotating arm relative to the second rotating arm;

[0010] The positioning pin is used to pass through multiple holes to measure the coaxiality of the multiple holes.

[0011] Preferably, the base is provided with a plurality of support portions at intervals, each of the support portions having an accommodating groove, and the locking member is provided in a one-to-one correspondence with the accommodating groove.

[0012] Preferably, the base is further provided with a clearance groove between two adjacent support portions, the clearance groove being used to accommodate one of the second rotating arms of the irregular shaft.

[0013] Preferably, the base has a first positioning hole for the positioning pin to pass through.

[0014] Preferably, the base has a locking hole that extends through the opposite sides of the receiving groove, and the locking member can slide through the locking hole.

[0015] Preferably, the locking member includes a first slider and a first gripping head, the first gripping head being disposed on one side of the first slider, the first slider being slidably passing through the locking hole and pressing the shaft against the receiving groove.

[0016] Preferably, the base has a second positioning hole, and the positioning member can slide through the second positioning hole.

[0017] Preferably, the positioning element includes a second slider and a second gripping head, the second gripping head being disposed on one side of the second slider, the second slider being slidably inserted through the second positioning hole and abutting against the first rotating arm.

[0018] Preferably, the end of the positioning member has a first stepped recess and a second stepped recess that are continuously arranged, and there is a transition end face between the first stepped recess and the second stepped recess. The second stepped recess is used to abut against the circumferential surface of the first rotating arm, and the transition end face is used to abut against the side surface of the first rotating arm.

[0019] Preferably, the positioning pin includes a head, a through portion, and a limiting portion connected in sequence. The through portion is used to pass through multiple holes. The head is configured as a cone with a diameter that gradually decreases toward the side away from the through portion. The diameter of the limiting portion is larger than the diameter of the through portion.

[0020] Beneficial effects:

[0021] The measuring fixture provided by this utility model, when measuring an irregularly shaped shaft, first supports the shaft body in a receiving groove, with both ends of the shaft passing through the receiving groove. Then, locking members are installed, pressing the shaft body against the receiving groove to achieve reference positioning of the shaft body. Next, a positioning pin is used to simultaneously pass through multiple holes to measure the coaxiality of the multiple holes. If the pin passes through smoothly, it proves that the coaxiality of the multiple holes meets the requirements; if it cannot pass through smoothly, at least one hole does not meet the coaxiality requirements. Furthermore, after the positioning pin is inserted, the irregularly shaped shaft is locked by the positioning pin and the locking members, preventing any movement. The positioning member is used to measure the positional accuracy of the first rotating arm, i.e., whether the angle between the first and second rotating arms meets the requirements. If the positioning member abuts against the periphery of the target position of the first rotating arm, it meets the requirements; if the positioning member deviates from the periphery of the target position of the first rotating arm and does not abut, it indicates that the positional accuracy of the first cantilever does not meet the requirements. Using this measuring fixture, irregularly shaped shafts can be quickly dimensionally measured, meeting the requirements for rapid batch measurement of products and ensuring reliable and stable quality of finished products. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the irregular shaft to be measured in the prior art;

[0023] Figure 2 This is a schematic diagram of the structure of the measuring fixture provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the measuring fixture provided by this utility model for measuring irregularly shaped shafts;

[0025] Figure 4 This is a side view of the measuring fixture provided by this utility model measuring irregular shafts;

[0026] Figure 5 This is a schematic diagram of the positioning component for measuring the first rotating arm provided by this utility model.

[0027] In the picture:

[0028] 1. Base; 11. Support; 111. Receiving groove; 12. Relief groove; 13. First positioning hole; 14. Locking hole; 15. Second positioning hole;

[0029] 2. Locking element; 21. First slider; 22. First gripping head;

[0030] 3. Positioning component; 31. Second slider; 311. First stepped recess; 312. Second stepped recess; 313. Transition end face; 32. Second gripping head;

[0031] 4. Positioning pin; 41. Head; 42. Insertion part; 43. Limiting part;

[0032] 5. Irregular shaft; 51. Shaft body; 52. First spiral arm; 53. Second spiral arm; 531. Perforation. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] This embodiment provides a measuring gauge. (Refer to...) Figures 1 to 5As shown, the measuring fixture is used to measure an irregularly shaped shaft 5. The irregularly shaped shaft 5 includes a shaft body 51 and a first rotating arm 52 and at least two second rotating arms 53 disposed on the shaft body 51. The second rotating arms 53 have through holes 531. The measuring fixture includes a base 1 and a locking member 2, a positioning member 3, and a positioning pin 4 detachably disposed on the base 1. The base 1 has a receiving groove 111 for the shaft body 51 to pass through and support it; the locking member 2 is used to press the shaft body 51 into the receiving groove 111; the positioning member 3 is used to abut against the periphery of the first rotating arm 52 to measure the angle of the first rotating arm 52 relative to the second rotating arm 53; the positioning pin 4 is used to pass through multiple through holes 531 to measure the coaxiality of the multiple through holes 531.

[0038] In this embodiment, when using the measuring tool to measure the irregular shaft 5, the shaft body 51 of the irregular shaft 5 is first supported in the receiving groove 111, with both ends of the irregular shaft 5 passing through the receiving groove 111. Then, the locking member 2 is installed, pressing the shaft body 51 against the receiving groove 111 to achieve a reference positioning of the shaft body 51. Next, the positioning pin 4 is used to simultaneously pass through multiple holes 531 to measure the coaxiality of the multiple holes 531. If the passing is successful, it proves that the coaxiality of the multiple holes 531 meets the requirements; if it cannot be passed successfully, at least one hole 531 does not meet the coaxiality requirements. Furthermore, after the positioning pin 4 is inserted, the irregular shaft 5 is locked by the positioning pin 4 and the locking piece 2, and cannot move. At this time, the positioning piece 3 is used to measure the positional accuracy of the first rotating arm 52, that is, whether the angle between the first rotating arm 52 and the second rotating arm 53 meets the requirements. If the positioning piece 3 abuts against the periphery of the target position of the first rotating arm 52, it meets the requirements; if the positioning piece 3 deviates from the periphery of the target position of the first rotating arm 52 and does not abut, it indicates that the positional accuracy of the first cantilever 52 does not meet the requirements. Using this measuring tool, the irregular shaft 5 can be quickly dimensionally measured, meeting the requirements for rapid batch measurement of products and ensuring reliable and stable product quality.

[0039] In this embodiment, a plurality of support portions 11 are spaced apart on the base 1, and each support portion 11 has a receiving groove 111. The locking member 2 is correspondingly provided with the receiving groove 111. Specifically, by providing a plurality of support portions 11, a plurality of receiving grooves 111 are provided on the base 1. The plurality of receiving grooves 111 together support the shaft body 51 of the irregular shaft 5, thereby improving the reliability and stability of the support for the irregular shaft 5.

[0040] For example, in this embodiment, there are two support portions 11 and two receiving slots 111.

[0041] In this embodiment, the base 1 also has a clearance groove 12 between two adjacent support portions 11. The clearance groove 12 is used to accommodate one of the second rotating arms 53 of the irregular shaft 5. Specifically, since part of the second rotating arm 53 of the irregular shaft 5 may be located between two adjacent support portions 11, in order to avoid the base 1 interfering with the second rotating arm 53, the clearance groove 12 is provided so that one of the second rotating arms 53 of the irregular shaft 5 can be inserted and accommodated, thus avoiding interference with subsequent measurement work.

[0042] In this embodiment, the base 1 has a first positioning hole 13 for the positioning pin 4 to pass through. Specifically, while the positioning pin 4 passes through multiple through holes 531, it also passes through the first positioning hole 13, which provides a positioning reference for the positioning pin 4. It can be understood that when the coaxiality of the multiple through holes 531 meets the requirements, the axes of the multiple through holes 531 and the first positioning hole 13 are in a coincident position.

[0043] Specifically, when a relief groove 12 is provided, the first positioning hole 13 passes through the relief groove 12, so that the positioning pin 4 can smoothly pass through the through hole 531 of the second rotating arm 53 located in the relief groove 12.

[0044] In this embodiment, the base 1 has locking holes 14 that penetrate the opposite side walls of the receiving groove 111, and the locking abutment 2 can slide through the locking holes 14. Specifically, when installing the locking abutment 2, the locking abutment 2 passes through the locking holes 14, that is, through the opposite side walls of the receiving groove 111, thereby locking the shaft 51 in the receiving groove 111 and pressing the shaft 51 against the receiving groove 111.

[0045] Specifically, the locking member 2 includes a first slider 21 and a first gripping head 22. The first gripping head 22 is disposed on one side of the first slider 21. The first slider 21 can slide through the locking hole 14 and press the shaft 51 against the receiving groove 111. Specifically, the first gripping head 22 is for the operator to grip, thereby pushing the first slider 21 to slide within the locking hole 14. Specifically, the first gripping head 22 is detachably disposed from the first slider 21. Specifically, the connection between the first gripping head 22 and the first slider 21 can be a threaded connection or an interference fit, etc.

[0046] In this embodiment, a second positioning hole 15 is provided on the base 1, and the positioning member 3 can slide through the second positioning hole 15. Specifically, when installing the positioning member 3, the positioning member 3 passes through the second positioning hole 15, and then the end of the positioning member 3 moves to a position that abuts against the first rocker arm, thereby measuring the positional accuracy of the first rotating arm 52.

[0047] Specifically, the positioning component 3 includes a second slider 31 and a second gripping head 32. The second gripping head 32 is disposed on one side of the second slider 31, which is slidably inserted through the second positioning hole 15 and abuts against the first rotating arm 52. Specifically, the second gripping head 32 is gripped by the operator, thereby pushing the second slider 31 to slide within the second positioning hole 15. Specifically, the second gripping head 32 is detachably mounted on the second slider 31. Specifically, the connection between the second gripping head 32 and the second slider 31 can be threaded or interference-fitted, etc.

[0048] Optionally, the outer periphery of the first gripping head 22 and / or the second gripping head 32 is provided with friction texture to increase friction with the operator's hand.

[0049] In this embodiment, the end of the positioning member 3 has a continuously arranged first stepped recess 311 and a second stepped recess 312. A transition end face 313 is provided between the first stepped recess 311 and the second stepped recess 312. The second stepped recess 312 is used to abut against the circumferential surface of the first rotating arm 52, and the transition end face 313 is used to abut against the side surface of the first rotating arm 52. Specifically, the end of the second slider 31 has a continuously arranged first stepped recess 311 and a second stepped recess 312. During measurement, the end of the second slider 31 abuts against the first rotating arm 52. Specifically, when the second stepped recess 312 abuts against the circumferential surface of the first rotating arm 52, and simultaneously the transition end face 313 abuts against the side surface of the first rotating arm 52, it indicates that the included angle between the first rotating arm 52 and the second rotating arm 53 meets the requirements, and the positional accuracy of the first rotating arm 52 meets the requirements. Conversely, if the second stepped recess 312 does not abut against the circumferential surface of the first rotating arm 52, or the transition end face 313 does not abut against the side surface of the first rotating arm 52, it means that the included angle between the first rotating arm 52 and the second rotating arm 53 deviates from the preset value, and it means that the positional accuracy of the first rotating arm 52 does not meet the requirements.

[0050] In this embodiment, the positioning pin 4 includes a head 41, a through portion 42, and a limiting portion 43 connected in sequence. The through portion 42 is used to pass through multiple through holes 531. The head 41 is configured as a cone with a diameter that gradually decreases towards the side away from the through portion 42. The diameter of the limiting portion 43 is larger than the diameter of the through portion 42. Specifically, the head 41 is configured as a cone to facilitate the overall insertion of the positioning pin 4. The diameter of the through portion 42 is adapted to the diameter of the through holes 531, and the diameter of the limiting portion 43 is larger than the diameter of the through portion 42, that is, the diameter of the limiting portion 43 is larger than the diameter of the through holes 531, thereby playing a limiting role at the tail of the positioning pin 4. The limiting portion 43 can abut against the nearest second rocker arm to achieve axial limiting of the positioning pin 4.

[0051] For example, the head 41, the through part 42 and the limiting part 43 are integrally formed, which has a simple structure and is easy to manufacture.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A measuring fixture for measuring an irregularly shaped shaft (5), the irregularly shaped shaft (5) comprising a shaft body (51) and a first rotating arm (52) and at least two second rotating arms (53) disposed on the shaft body (51), the second rotating arms (53) having through holes (531), characterized in that, The measuring fixture includes a base (1) and a locking member (2), a positioning member (3), and a positioning pin (4) detachably mounted on the base (1); wherein, The base (1) has a receiving groove (111) for the shaft (51) to pass through and be supported. The locking member (2) is used to press the shaft (51) into the receiving groove (111); The positioning element (3) is used to abut against the periphery of the first rotating arm (52) to measure the angle of the first rotating arm (52) relative to the second rotating arm (53); The positioning pin (4) is used to pass through multiple holes (531) to measure the coaxiality of the multiple holes (531).

2. The measuring fixture according to claim 1, characterized in that, The base (1) is provided with a plurality of support parts (11) spaced apart, and each support part (11) is provided with a receiving groove (111). The locking member (2) is provided in a one-to-one correspondence with the receiving groove (111).

3. The measuring fixture according to claim 2, characterized in that, The base (1) is provided with a relief groove (12) between two adjacent support parts (11), and the relief groove (12) is used to accommodate one of the second rotating arms (53) of the irregular shaft (5).

4. The measuring fixture according to claim 1, characterized in that, The base (1) has a first positioning hole (13) for the positioning pin (4) to pass through.

5. The measuring fixture according to claim 1, characterized in that, The base (1) has a locking hole (14) that passes through the opposite side walls of the receiving groove (111), and the locking member (2) can slide through the locking hole (14).

6. The measuring fixture according to claim 5, characterized in that, The locking member (2) includes a first slider (21) and a first gripping head (22). The first gripping head (22) is located on one side of the first slider (21). The first slider (21) can slide through the locking hole (14) and press the shaft (51) against the receiving groove (111).

7. The measuring fixture according to claim 1, characterized in that, The base (1) has a second positioning hole (15) and the positioning member (3) can slide through the second positioning hole (15).

8. The measuring fixture according to claim 7, characterized in that, The positioning element (3) includes a second slider (31) and a second gripping head (32). The second gripping head (32) is located on one side of the second slider (31). The second slider (31) can slide through the second positioning hole (15) and abut against the first rotating arm (52).

9. The measuring fixture according to claim 1, characterized in that, The end of the positioning member (3) has a first stepped recess (311) and a second stepped recess (312) continuously arranged. There is a transition end face (313) between the first stepped recess (311) and the second stepped recess (312). The second stepped recess (312) is used to abut against the circumferential surface of the first rotating arm (52), and the transition end face (313) is used to abut against the side surface of the first rotating arm (52).

10. The measuring fixture according to claim 1, characterized in that, The positioning pin (4) includes a head (41), a through part (42) and a limiting part (43) connected in sequence. The through part (42) is used to pass through a plurality of the through holes (531). The head (41) is configured as a cone with a diameter that gradually decreases toward the side away from the through part (42). The diameter of the limiting part (43) is larger than the diameter of the through part (42).

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