Shaft part inner hole run-out detection tool

Abstract

The utility model relates to a shaft part inner hole run-out detection tool. The device comprises a base and a supporting assembly arranged on the base. The device comprises two supporting wheel sets which are oppositely arranged and used for supporting the two axial ends of a measured part. The detection device comprises a supporting seat capable of moving relative to the detected part, a measuring lever rotationally connected to the supporting seat and a measuring meter device located on one side of the measuring lever, and one end of the measuring lever is provided with a measuring head capable of extending into an inner hole of the detected part and abutting against the side wall of the inner hole; the measuring end of the measuring meter device abuts against the other end of the measuring lever, and the measured part is made to rotate around the axis of the measured part, so that the jumping value is measured through the measuring meter. According to the utility model, the run-out value of the inner hole of the part can be kept in a tolerance range, so that the requirements on high-precision and high-efficiency detection in the manufacturing process of the motor shaft of the new energy automobile are met.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft detection, in particular to a tool for detecting inner hole runout of shaft parts. Background Art

[0002] The development of new energy vehicles has put forward higher requirements on the manufacturing process of motor shafts, especially the runout accuracy of the inner hole of the motor shaft.

[0003] Traditional measurement methods mainly rely on three-dimensional coordinate measuring machines to measure the runout value of the inner hole of the part. However, this measurement method has obvious shortcomings. First, the measurement efficiency of the three-dimensional coordinate measuring machine is low and cannot meet the needs of rapid inspection of a large number of parts. Secondly, due to its poor measurement flexibility, it is difficult to perform real-time measurement and adjustment on the side of the machine tool production line. Summary of the invention

[0004] To this end, the utility model provides a tool for detecting the inner hole runout of shaft parts. The tool is supported on the outer circle of the part and measures the runout value of the inner hole of the part, thereby greatly improving the measurement efficiency of shaft parts. The tool can perform measurements on the side of a machine tool production line to achieve the 100% inspection requirement for the inner hole runout value of shaft parts, ensuring that the inner hole runout value of the part remains within the tolerance range, thereby meeting the requirements for high-precision and high-efficiency detection in the manufacturing process of new energy vehicle motor shafts.

[0005] In order to solve the above technical problems, the utility model provides a tool for detecting inner hole runout of shaft parts, comprising a base and:

[0006] The support assembly includes two support wheel assemblies arranged opposite to each other and used for supporting the two axial ends of the measured part;

[0007] The detection device includes a support seat that can move relative to the part to be measured, a measuring lever rotatably connected to the support seat, and a measuring meter device located on one side of the measuring lever, one end of the measuring lever is provided with a measuring head that can extend into the inner hole of the part to be measured and abut against the side wall of the inner hole, the measuring end of the measuring meter device abuts against the other end of the measuring lever, and the runout value is measured by the measuring meter by causing the part to be measured to rotate around its own axis.

[0008] In one embodiment of the present invention, it further comprises two support blocks for mounting the support wheel groups which are arranged relatively on the base, and each of the support wheel groups comprises two rollers which are rotatably connected to the corresponding support blocks.

[0009] In one embodiment of the present utility model, the support seat includes two rotating support arms and a support shaft installed on the two rotating support arms, and the measuring lever is equipped with a rotating block rotatably connected to the support shaft.

[0010] In one embodiment of the present invention, locking blocks are installed at the upper ends of the two rotating support arms, and the locking blocks are installed with locking shafts that can abut against the rotating blocks to limit the rotation of the rotating blocks.

[0011] In one embodiment of the present invention, it also includes a movable bottom plate slidably connected to the base, and the support seat and the measuring meter device are both installed on the movable bottom plate.

[0012] In an embodiment of the present utility model, the base is provided with a slide rail, and the movable bottom plate is provided with a slider that slidably cooperates with the slide rail.

[0013] In one embodiment of the utility model, a limit block is arranged on the base at the lower side of the movable bottom plate, the limit block is provided with a positioning hole, the movable bottom plate is installed with a positioning pin capable of extending into the positioning hole, and a movable limit block installed on the base is arranged on the side of the movable bottom plate away from the supporting assembly.

[0014] In one embodiment of the utility model, the measuring meter device includes a measuring seat and a measuring meter installed on the top of the measuring seat, the measuring seat is provided with a clearance channel, the measuring needle of the measuring meter extends into and from the upper wall of the clearance channel into the clearance channel, and the clearance channel is for the other end of the measuring lever to extend into so as to abut against the measuring needle of the measuring meter.

[0015] In one embodiment of the present utility model, the upper part of the other end of the measuring lever is connected to a measuring top block for abutting against a measuring needle of the measuring meter.

[0016] In one embodiment of the utility model, an elastic pin is installed on the bottom wall of the clearance channel, and the measuring top block extends below the other end of the measuring lever and can be abutted against the elastic pin.

[0017] The above technical solution of the utility model has the following advantages compared with the prior art:

[0018] The utility model discloses a tool for detecting the inner hole runout of shaft parts, which greatly improves the measurement efficiency and significantly reduces the frequency of use and dependence on the three-coordinate measuring machine. By adopting this detection tool, the measurement operation can be directly carried out beside the machine tool production line, and the 100% detection requirement for the inner hole runout value of shaft parts is achieved, which not only improves the dimensional qualification rate of the part runout value and ensures the consistency and reliability of the product, but also reduces the rework and waste caused by measurement errors, improves production efficiency, and reduces production costs. In addition, the tool has a simple structure and is easy to operate, and is suitable for efficient quality inspection in a large-scale production environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of the inner hole runout detection tool for shaft parts.

[0021] Figure 2 It is a schematic diagram of the structure of the detection device of the utility model.

[0022] Description of the Figures in the Specification:

[0023] 1. Base; 11. Slide rail; 12. Limit block; 13. Movable limit stopper;

[0024] 2. Support assembly; 21. Support wheel set; 22. Support block;

[0025] 3. Detection device; 31. Support seat; 311. Rotating support arm; 312. Support shaft; 313. Locking block; 314. Locking shaft; 32. Measuring lever; 321. Measuring head; 322. Rotating block; 33. Measuring meter device; 331. Measuring seat; 332. Measuring meter; 333. Measuring top block; 334. Elastic pin; 335. Make way passage;

[0026] 4. Moving bottom plate; 41. Positioning pin;

[0027] 5. Parts to be tested. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0030] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0032] Reference Figure 1 , Figure 2 As shown, a tool for detecting inner hole runout of shaft parts of the utility model includes a base 1 and:

[0033] The support assembly 2 includes two support wheel assemblies 21 arranged opposite to each other and used for supporting the two axial ends of the measured part 5;

[0034] The detection device 3 includes a support base 31 that can move relative to the measured part 5, a measuring lever 32 rotatably connected to the support base 31, and a measuring meter device 33 located on one side of the measuring lever 32. One end of the measuring lever 32 is provided with a measuring head 321 that can extend into the inner hole of the measured part 5 and abut against the side wall of the inner hole. The measuring end of the measuring meter device 33 abuts against the other end of the measuring lever 32. By rotating the measured part 5 around its own axis, the runout value can be measured by the measuring meter 332.

[0035] In one embodiment, two support blocks 22 for mounting the support wheel group 21 are relatively arranged on the base 1, and the upper end of the support block 22 is V-shaped, and each support wheel group 21 includes two rollers rotatably connected to the corresponding support block 22. The rollers are specifically supported by support shafts 312. The V-shaped support block 22 and the roller design can ensure that the weight of the measured part 5 is evenly distributed, avoiding measurement errors caused by the tilt of the part. At the same time, the rollers are supported by support shafts 312, so that the parts can rotate smoothly, improving the stability and accuracy of the measurement.

[0036] In one embodiment, the support base 31 includes two rotating support arms 311 and a support shaft 312 installed on the two rotating support arms 311 . The measuring lever 32 is provided with a rotating block 322 rotatably connected to the support shaft 312 .

[0037] In one embodiment, a locking block 313 is installed at the upper end of the two rotating support arms 311, and the locking block 313 is installed with a locking shaft 314 that can abut against the rotating block 322 to limit the rotation of the rotating block 322. The design of the locking shaft 314 can effectively limit the excessive rotation of the rotating block 322, ensure the stability and accuracy of the measuring lever 32 during the measurement process, and improve the reliability of the measurement data.

[0038] In one embodiment, it further comprises a movable bottom plate 4 slidably connected to the base 1 , and the support seat 31 and the measuring meter device 33 are both mounted on the movable bottom plate 4 .

[0039] Specifically, the base 1 is provided with a slide rail 11 , and the movable bottom plate 4 is provided with a slider slidably matched with the slide rail 11 .

[0040] Specifically, a limit block 12 is arranged on the base 1 at the lower side of the movable bottom plate 4, the limit block 12 is provided with a positioning hole, the movable bottom plate 4 is installed with a positioning pin 41 that can extend into the positioning hole, and a movable limit block 13 installed on the base 1 is arranged on the side of the movable bottom plate 4 away from the supporting assembly 2.

[0041] Through the above arrangement, the measuring device can slide freely on the horizontal plane, which facilitates the measuring head 321 to accurately align with the inner hole of the measured part 5, simplifies the measuring process, and improves the convenience of operation and the measuring efficiency.

[0042] In one embodiment, the measuring gauge device 33 includes a measuring seat 331 and a measuring gauge 332 installed on the top of the measuring seat 331. The measuring seat 331 is provided with a clearance channel 335. The measuring needle of the measuring gauge 332 extends into and from the upper wall of the clearance channel 335 into the clearance channel 335. The clearance channel 335 is for the other end of the measuring lever 32 to extend into so as to abut against the measuring needle of the measuring gauge 332.

[0043] Specifically, the measuring gauge 332 adopts a micrometer, and specifically may be a Mahr series measuring gauge 332 .

[0044] In one embodiment, a measuring top block 333 for abutting against a measuring needle of the measuring gauge 332 is connected to the upper portion of the other end of the measuring lever 32 .

[0045] The bottom wall of the clearance channel 335 is installed with an elastic pin 334, and the measuring top block 333 extends below the other end of the measuring lever 32 and can abut against the elastic pin 334. The design of the measuring top block 333 and the elastic pin 334 can ensure that the measuring lever 32 always maintains good contact with the measuring needle of the measuring gauge 332 during the measurement process, reduce measurement errors, and improve the stability of the measurement results.

[0046] Working principle: First, place the part 5 to be measured horizontally on the support wheel set 21 of the two support blocks 22, and move the movable base plate 4 to make the measuring head 321 of the measuring lever 32 enter the inner hole of the part 5 to be measured axially, and fix the measuring point position by the limit block 12. Then, reset the measuring table 332 to the initial value 0, manually rotate the part 5 to be measured at a constant speed for one circle, and the measuring table 332 displays the current maximum value of the runout, and record the data to complete the measurement operation. In this way, the tooling can achieve fast and reliable measurement of the runout value of the inner hole of the part, meeting the 100% detection requirement of the runout value of the inner hole of the part.

[0047] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tool for detecting inner hole runout of shaft parts, characterized in that: It comprises a base (1) and: A support assembly (2) comprising two supporting wheel assemblies (21) arranged opposite to each other and used for supporting two axial ends of the part to be tested (5); The detection device (3) comprises a support seat (31) movable relative to the measured part (5), a measuring lever (32) rotatably connected to the support seat (31), and a measuring gauge device (33) located on one side of the measuring lever (32), wherein one end of the measuring lever (32) is provided with a measuring head (321) capable of extending into the inner hole of the measured part (5) and abutting against the side wall of the inner hole, and the measuring end of the measuring gauge device (33) abuts against the other end of the measuring lever (32), and the runout value is measured by the measuring gauge (332) by rotating the measured part (5) around its own axis.

2. The inner hole runout detection tool for shaft parts according to claim 1 is characterized in that: It also comprises two support blocks (22) arranged relatively on the base (1) and used for mounting the support wheel groups (21), and each of the support wheel groups (21) comprises two rollers rotatably connected to the corresponding support blocks (22).

3. The inner hole runout detection tool for shaft parts according to claim 1 is characterized in that: The support base (31) comprises two rotating support arms (311) and a support shaft (312) mounted on the two rotating support arms (311). The measuring lever (32) is provided with a rotating block (322) rotatably connected to the support shaft (312).

4. The tooling for detecting inner hole runout of shaft parts according to claim 3 is characterized in that: A locking block (313) is installed at the upper ends of the two rotating support arms (311), and the locking block (313) is installed with a locking shaft (314) capable of abutting against the rotating block (322) to limit the rotation of the rotating block (322).

5. The inner hole runout detection tool for shaft parts according to claim 1 is characterized in that: It also comprises a movable bottom plate (4) slidably connected to the base (1), and the support seat (31) and the measuring meter device (33) are both mounted on the movable bottom plate (4).

6. The inner hole runout detection tool for shaft parts according to claim 5 is characterized in that: The base (1) is provided with a slide rail (11), and the movable base plate (4) is provided with a slide block that slidably cooperates with the slide rail (11).

7. The tooling for detecting inner hole runout of shaft parts according to claim 5 is characterized in that: A limit block (12) is arranged on the base (1) at the lower side of the movable base plate (4), the limit block (12) being provided with a positioning hole, the movable base plate (4) being provided with a positioning pin (41) capable of extending into the positioning hole, and a movable limit stopper (13) mounted on the base (1) is arranged on a side of the movable base plate (4) away from the support assembly (2).

8. The inner hole runout detection tool for shaft parts according to claim 1 is characterized in that: The measuring gauge device (33) comprises a measuring seat (331) and a measuring gauge (332) mounted on the top of the measuring seat (331); the measuring seat (331) is provided with a clearance channel (335); a measuring needle of the measuring gauge (332) extends into and from the upper wall of the clearance channel (335) into the clearance channel (335); the clearance channel (335) is used for the other end of the measuring lever (32) to extend into so as to abut against the measuring needle of the measuring gauge (332).

9. The inner hole runout detection tool for shaft parts according to claim 8, characterized in that: The upper portion of the other end of the measuring lever (32) is connected to a measuring top block (333) for abutting against a measuring needle of the measuring gauge (332).

10. The inner hole runout detection tool for shaft parts according to claim 9, characterized in that: An elastic pin (334) is installed on the bottom wall of the clearance channel (335), and the measuring top block (333) extends below the other end of the measuring lever (32) and can abut against the elastic pin (334).

Images