Shaft part length measuring device

By designing the guide and adjustment components of the shaft part length measuring device, the problems of detection error and low efficiency caused by the mismatch of the positioning seat are solved, and accurate and efficient shaft part length measurement is achieved.

CN223425933UActive Publication Date: 2025-10-10SHENZHEN LANTAI TECH CO LTD
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Patent Information

Application Number
CN202423089868.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-10-10
Estimated Expiration
2034-12-13

AI Technical Summary

Technical Problem

In the prior art, during the length measurement of shaft parts, the use of inappropriate V-shaped positioning seats causes the parts to tilt, affecting the detection results and reducing the detection efficiency.

Method used

A length measuring device for shaft parts is designed, which includes a mounting base, a guide assembly, a positioning assembly and a measuring assembly. The positioning assembly is guided by the guide assembly to move, and the position of the positioning assembly and the distance between the clamping parts are adjusted by the first and second adjustment assemblies to adapt to shaft parts of different lengths and shaft diameters.

Benefits of technology

It realizes automatic adjustment of positioning according to the length and diameter of shaft parts, ensures measurement accuracy and efficiency, and solves the problems of detection result errors and low efficiency caused by unsuitable positioning seats.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model is suitable for the technical field of part metering equipment, and provides a shaft part length measuring device, which comprises a mounting base, a length measuring device and a length measuring device, the guide assembly is mounted on the mounting base, and the guide assembly comprises a first adjusting assembly; the positioning assembly is provided with a group of clamping pieces used for positioning the shaft parts; and the measuring assembly is used for measuring the length of the shaft part positioned on the clamping piece. The clamping device is provided with the guide assembly used for guiding the positioning assembly to move, the first adjusting assembly is used for adjusting the moving position of the positioning assembly, and the second adjusting assembly used for adjusting the distance between the clamping pieces is arranged. According to different lengths or shaft diameters of the shaft parts, adjustment is carried out through the first adjusting assembly and the second adjusting assembly, so that the shaft parts are positioned on the positioning assembly, and the problem that the detection result is influenced by inadaptation of the positioning seat or the detection efficiency is influenced by replacement of the positioning seat is solved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of parts measuring equipment, in particular to a length measuring device for shaft parts. Background Art

[0002] Shafts are a typical component often found in machines. They primarily support transmission components, transmit torque, and bear loads. They typically consist of a concentric shaft with an outer cylindrical surface, a conical surface, an inner bore, threads, and corresponding end faces. Currently, shafts are commonly used in industries such as automotive, machinery, aviation, and electronics, where they often play a crucial role.

[0003] Shaft parts are mainly used to transmit torque and bear loads, support rotating parts, fix or position parts, transmit power, and form structural components. Shaft parts are an indispensable and important component in mechanical equipment due to their strength, rigidity and wear resistance.

[0004] In the prior art, common shaft part length measurements often use caliper methods or instrument measurement methods. In the instrument measurement method, the shaft part is first positioned using a V-shaped positioning seat, and then an optical meter or a length gauge is used to measure the length of the shaft part. However, during the length measurement of the shaft part, the part is positioned by the V-shaped positioning seat, and the optical meter is moved to detect its length. However, the length of different parts may be different from the shaft diameter. Using an inappropriate positioning seat will cause the part to be in a tilted state in the V-shaped positioning seat, affecting the detection result of the shaft part. Replacing the corresponding positioning seat will affect the detection efficiency of the shaft part length measurement. Utility Model Content

[0005] The purpose of the embodiment of the present utility model is to provide a length measuring device for shaft parts, aiming to solve the problem that during the length measurement of shaft parts, the parts are positioned by a V-shaped positioning seat, and the optical meter is moved to detect their length. However, the lengths of different parts or the shaft diameters are different, and the use of an unmatched positioning seat causes the parts to be in a tilted state in the V-shaped positioning seat, affecting the detection results of the shaft parts. If the corresponding positioning seat is replaced, the detection efficiency of the shaft part length measurement will be affected.

[0006] The embodiment of the present utility model is implemented as follows: a shaft-type parts length measuring device, the shaft-type parts length measuring device comprising:

[0007] A mounting base, wherein the mounting base is used for mounting the guide assembly and the measuring assembly;

[0008] A guiding assembly is mounted on a mounting base, the guiding assembly comprises a first guide rail for guiding the movement of a positioning assembly, and a first adjusting assembly mounted on the first guide rail for adjusting the moving position of the positioning assembly.

[0009] The positioning assembly is provided with a plurality of clamps for positioning shaft parts, the clamps are mounted side by side on the guiding assembly, and the clamps are adjusted in spacing by a second adjusting assembly to facilitate the positioning of the shaft parts.

[0010] The measuring assembly is used for measuring the length of the shaft parts positioned on the clamps.

[0011] Preferably, the guiding assembly further comprises a mounting shell, the bottom surface of the mounting shell is provided with a first sliding groove for sliding connection with the first guide rail, the first guide rail is provided with a plurality of clamps mounted side by side on the mounting base, the inside of the mounting shell is provided with a cavity for mounting the first adjusting assembly, and the top surface of the mounting shell is used for mounting the positioning assembly, the first guide rail is used for guiding the movement of the mounting shell and the positioning assembly mounted on the mounting shell.

[0012] Preferably, the first adjusting assembly comprises a first adjusting rod and a plurality of positioning frames, one end of the first adjusting rod is inserted into the side surface of the mounting shell through a first connecting spring, the other end of the first adjusting rod is connected with the positioning frames through a plurality of connecting rods respectively, the positioning frames are movably mounted on the first guide rail through second connecting springs, and the mounting shell is moved along the first guide rail by pressing the first adjusting rod to lift the positioning frames through the connecting rods.

[0013] Preferably, the positioning assembly is provided with a plurality of clamps, the clamps are arranged side by side in the guiding direction of the guiding assembly, each clamp is used for positioning a shaft part, and the clamps comprise a plurality of second guide rails mounted side by side on the guiding assembly, the second guide rails are used for guiding the movement of the clamps.

[0014] Preferably, the clamp is provided with a mounting portion and a positioning portion, the bottom surface of the mounting portion is provided with a second sliding groove and a first connecting groove, the second sliding groove is used for sliding connection with the second guide rail, the first connecting groove is used for connection with the second adjusting assembly, the mounting portion is provided with a U-shaped frame for mounting the positioning portion, and the positioning portion abuts against the shaft part to facilitate the positioning of the shaft part.

[0015] Preferably, the second adjusting assembly comprises a guiding wheel and a plurality of guiding rods, the guiding wheel is provided with a plurality of teeth and is drivingly connected with the guiding rods respectively, the guiding rods are connected with the first connecting grooves in the bottom of the clamps respectively, the guiding rods are tangent to the guiding wheel respectively, and the guiding wheel and the guiding rods are used for guiding the movement of the clamps to hold the shaft parts.

[0016] Preferably, the measuring component includes a mounting bracket and a measuring piece, the mounting bracket is mounted on a mounting base, the mounting bracket is used to mount the measuring piece, the measuring piece is mounted on the mounting bracket so that the measuring piece is located directly above the positioning component to facilitate the measuring piece to measure the length of the shaft part, and the measuring piece is driven to move by setting a moving component so that the measuring piece can move along the length direction of the shaft part.

[0017] Preferably, the shaft parts length measuring device further includes a display screen and a key module, which are mounted on a mounting base. The display screen is used to display the measured data of the shaft parts, and the key module is used to control the measurement instructions of the measuring component.

[0018] An embodiment of the present invention provides a device for measuring the length of shaft parts. The present invention provides a mounting base for installing a guide component and a measuring component, a guide component for guiding the movement of the positioning component, and uses a first adjusting component to adjust the moving position of the positioning component, so that the positioning component can adjust the position of the positioning component according to the length of the shaft part to facilitate positioning of shaft parts of different lengths. A group of clamping parts that can be used to position the shaft parts is provided in the positioning component, and a second adjusting component is provided for adjusting the spacing between a group of clamping parts, so that it can be adjusted according to different shaft diameters of the shaft parts to facilitate positioning of the shaft parts, and a measuring component is provided to detect the length of the shaft parts positioned on the clamping parts, so that the shaft parts can be positioned on the positioning component by adjusting the first adjusting component and the second adjusting component according to the length or shaft diameter of the shaft parts, thereby solving the problem that the detection result is affected by the incompatibility of the positioning seat or the detection efficiency is affected by replacing the positioning seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural diagram of a shaft-type parts length measuring device provided by an embodiment of the utility model;

[0020] Figure 2 A schematic structural diagram of a guide assembly and a positioning assembly in a shaft-type parts length measuring device provided by an embodiment of the present utility model;

[0021] Figure 3 A schematic structural diagram of a first adjusting assembly in a shaft-type parts length measuring device provided by an embodiment of the present utility model;

[0022] Figure 4 A schematic structural diagram of a second adjustment component in a shaft-type parts length measuring device provided by an embodiment of the present utility model;

[0023] Figure 5The utility model provides a kind of structure schematic diagram of measuring assembly of shaft parts length measuring device provided by the utility model embodiment.

[0024] In the drawing: 1, mounting base; 2, guide assembly; 21, installation shell; 221, first sliding groove; 22, first adjusting assembly; 221, first adjusting rod; 2211, first connecting spring; 222, connecting rod; 223, positioning frame; 2231, second connecting spring; 23, first guide rail; 3, positioning assembly; 31, second guide rail; 32, second adjusting assembly; 321, guide wheel; 322, guide rod; 33, clamping piece; 331, mounting portion; 332, positioning portion; 4, measuring assembly; 41, mounting bracket; 42, measuring piece; 43, moving assembly; 5, shaft part. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following will be further described in detail with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model.

[0026] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0027] As Figure 1-5 As shown in a kind of structure diagram of shaft part 5 length measuring device provided by the utility model embodiment, including: mounting base 1, the mounting base 1 is used to guide assembly 2 and the installation of measuring assembly 4;

[0028] Guide assembly 2, the guide assembly 2 is installed on mounting base 1, the guide assembly 2 includes first guide rail 23 and first adjusting assembly 22, the first guide rail 23 is used to guide positioning assembly 3 movement, the first adjusting assembly 22 is installed on first guide rail 23, the first adjusting assembly 22 is used to adjust the moving position of positioning assembly 3;

[0029] Positioning assembly 3, the positioning assembly 3 is provided with a set of clamping piece 33 for positioning shaft part 5, a set of clamping piece 33 is installed side by side on guide assembly 2, the clamping piece 33 is adjusted by second adjusting assembly 32 The interval of clamping piece 33 is adjusted to facilitate positioning shaft part 5;

[0030] Measuring assembly 4, the measuring assembly 4 is used to measure the length of shaft part 5 positioned on clamping piece 33.

[0031] In the embodiment of the present utility model, preferably, the length measuring device of the shaft part 5 is mainly composed of a mounting base 1, a guide assembly 2, a positioning assembly 3 and a measuring assembly 4. The guide assembly 2 and the measuring assembly 4 are mounted on the mounting base 1, the guide assembly 2 and the measuring assembly 4 are mounted on the top surface of the mounting base 1, the positioning assembly 3 is mounted on the guide assembly 2 and is located above the guide assembly 2, and the measuring assembly 4 can be installed and located directly above the positioning assembly 3 so that the measuring assembly 4 can measure the shaft part 5 positioned on the positioning assembly 3; the guide assembly 2 that can guide the movement of the positioning assembly 3 is used, and the position of the positioning assembly 3 is adjusted by using the first adjusting assembly 22 to facilitate positioning of the shaft part 5, and the positioning assembly 3 is mainly A group of clamping members 33 for positioning shaft parts 5 is provided. The spacing between the clamping members 33 installed side by side can be adjusted by the second adjusting member 32 so that they can be positioned from the shaft diameter of the shaft part 5. The positioning member 3 can be provided in one group, two groups or multiple groups. When provided in one group, it can be positioned at the center position in the length direction of the shaft part 5 and the shaft diameter of the shaft part 5 is positioned by the clamping member 33. When provided in two groups, it can be positioned at both ends of the shaft part 5 so that the measuring member 4 can measure its length from both ends of the shaft part 5. The measuring member 4 is located directly above the positioning member 3 so as to measure the shaft part 5 positioned on the positioning member 3. The measuring member 4 can be a grating measurement so as to be measured by a grating ruler.

[0032] In one embodiment of the present invention, the present invention provides a mounting base 1 for installing a guide component 2 and a measuring component 4, provides a guide component 2 for guiding the movement of the positioning component 3 and uses a first adjusting component 22 to adjust the moving position of the positioning component 3, so that the positioning component 3 can adjust the position of the positioning component 3 according to the length of the shaft part 5 to facilitate positioning of shaft parts 5 of different lengths, a group of clamping members 33 for positioning the shaft parts 5 is provided in the positioning component 3, and a second adjusting component 32 for adjusting the spacing between a group of clamping members 33 is provided, so that it can be adjusted according to different shaft diameters of the shaft parts 5 to facilitate positioning of the shaft parts 5, and a measuring component 4 is provided to detect the length of the shaft part 5 positioned on the clamping member 33, so that the shaft part 5 can be positioned on the positioning component 3 by adjusting the first adjusting component 22 and the second adjusting component 32 according to the length or shaft diameter of the shaft part 5.

[0033] like Figure 1-5As shown, as a preferred embodiment of the present invention, the guide assembly 2 also includes a mounting shell 21, and the bottom surface of the mounting shell 21 is provided with a first slide groove 221 for sliding connection with the first guide rail 23, and the first guide rail 23 is provided with a group of parallel installations on the mounting base 1, and the interior of the mounting shell 21 is provided with a cavity for installing the first adjustment assembly 22, and the top surface of the mounting shell 21 is used to install the positioning assembly 3, and the first guide rail 23 is used to guide the movement of the mounting shell 21 and the positioning assembly 3 installed on the mounting shell 21.

[0034] In an embodiment of the utility model, preferably, the guide assembly 2 can also include a set of first guide rails 23 installed on the mounting base 1 and a mounting shell 21 installed on the first guide rails 23. The top surface of the mounting shell 21 is used to install the positioning assembly 3. A first adjustment assembly 22 for adjusting the position of the positioning assembly 3 is installed in the internal cavity of the mounting shell 21. The first guide rails 23 can be used to guide the movement of the mounting shell 21 and the positioning assembly 3 installed on the mounting shell 21, and the first adjustment assembly 22 is used to adjust the position of the positioning assembly 3.

[0035] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the first adjusting component 22 includes a first adjusting rod 221 and a group of positioning frames 223. One end of the first adjusting rod 221 is inserted into the side of the mounting shell 21 through a first connecting spring 2211, and the other end is connected to the positioning frames 223 through a group of connecting rods 222. The positioning frames 223 are movably installed on the first guide rail 23 through a second connecting spring 2231. By pressing the first adjusting rod 221, the positioning frame 223 is lifted through the connecting rod 222 to make the mounting shell 21 move along the first guide rail 23.

[0036] In the embodiment of the present utility model, preferably, the first adjustment component 22 is mainly composed of a first adjustment rod 221 and a group of positioning brackets 223. One end of the first adjustment rod 221 is inserted into the side of the mounting shell 21 and connected to the side of the mounting shell 21 by using a first connecting spring 2211. The other end of the first adjustment rod 221 can be set as a triangular block and its two side surfaces are respectively connected to the positioning bracket 223 through a connecting rod 222. The end of the connecting rod 222 can be set with a slope and the slope surface abuts against the positioning bracket 223. When the first adjustment rod 221 is pressed, the first adjustment rod 221 The other end pushes the connecting rod 222, and the connecting rod 222 is pushed to drive the positioning frame 223 to be lifted and disconnected from the first guide rail 23. At this time, the mounting shell 21 can move along the length direction of the first guide rail 23. When it is moved to the set position, the first adjusting rod 221 is no longer pressed, and the first adjusting rod 221 is reset. At this time, the end of the positioning frame 223 abutting against the connecting rod 222 is embedded in the first guide rail 23, and the mounting shell 21 is fixed on the first guide rail 23 and cannot move, so that the shaft parts 5 can be positioned on the positioning assembly 3 so that the measuring assembly 4 can measure its length.

[0037] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the positioning assembly 3 is provided in a group, and the positioning assemblies 3 are arranged in parallel in the guide direction of the guide assembly 2. Each positioning assembly 3 is used to position the shaft parts 5. The positioning assembly 3 includes a group of second guide rails 31. The second guide rails 31 are installed in parallel on the guide assembly 2. The second guide rails 31 are used to guide the movement of the clamping member 33.

[0038] In an embodiment of the present invention, preferably, a group of positioning components 3 are provided and are respectively installed on the mounting shell 21 of the guide component 2. Each positioning component 3 is provided with a clamping member 33 for positioning the shaft part 5 and a group of second guide rails 31 installed on the mounting shell 21. The second guide rails 31 are used to guide the movement of the clamping member 33 so as to adjust the spacing of the clamping member 33 according to the spacing of the shaft parts 5 so that it is adapted to the outer diameter of the shaft parts 5 to completely position the shaft parts 5, wherein the length direction of the second guide rail 31 is perpendicular to the length direction of the first guide rail 23.

[0039] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the clamping member 33 is provided with a mounting portion 331 and a positioning portion 332, and a second slide groove and a first connecting groove are provided on the bottom surface of the mounting portion 331, the second slide groove is used for sliding connection with the second guide rail 31, and the first connecting groove is used for connecting with the second adjustment component 32, and the mounting portion 331 is provided with a U-shaped frame for installing the positioning portion 332, and the positioning portion 332 abuts against the shaft part 5 to facilitate positioning of the shaft part 5.

[0040] In an embodiment of the utility model, preferably, the clamping member 33 installed on the mounting shell 21 can be provided with a mounting portion 331 and a positioning portion 332. The mounting portion 331 can be a square block with a certain height and a top surface thereof is provided with a U-shaped frame for installing the positioning portion 332. The bottom surface of the mounting portion 331 is provided with a second sliding groove that cooperates with the second guide rail 31 and a first connecting groove that is connected to the second adjustment component 32. The positioning portion 332 can be roller-shaped and its outer surface is tangent to the shaft part 5 to facilitate positioning of the shaft part 5.

[0041] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the second adjustment component 32 includes a guide wheel 321 and a group of guide rods 322, the guide wheel 321 is provided with a plurality of teeth and is respectively connected to the guide rods 322 in a transmission manner, a group of guide rods 322 are respectively connected to the first connecting groove at the bottom of the clamping member 33, the guide rods 322 are respectively tangent to the guide wheel 321, and the guide wheel 321 and the guide rod 322 are used to guide the clamping member 33 to move so as to clamp the shaft parts 5.

[0042] In an embodiment of the present utility model, preferably, the second adjustment component 32 is mainly composed of a guide wheel 321 and a group of guide rods 322 connected to the guide wheel 321, each guide rod 322 is connected to the first connecting groove at the bottom of a clamping member 33, and the guide wheel 321 is respectively connected to the guide rod 322 to facilitate guiding the two clamping members 33 to move toward or away from each other so as to adjust the distance between the clamping members 33.

[0043] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the measuring component 4 includes a mounting bracket 41 and a measuring piece 42, the mounting bracket 41 is mounted on the mounting base 1, the mounting bracket 41 is used to mount the measuring piece 42, the measuring piece 42 is mounted on the mounting bracket 41 so that the measuring piece 42 is located directly above the positioning component 3 to facilitate the measuring piece 42 to measure the length of the shaft part 5, and the measuring piece 42 is driven to move by the setting of the moving component 43 so that the measuring piece 42 can move along the length direction of the shaft part 5.

[0044] In an embodiment of the present utility model, preferably, the measuring component 4 mainly includes a mounting bracket 41 for mounting the measuring piece 42, and a moving component 43 for driving the measuring piece 42 to move is provided on the mounting bracket 41 so that the measuring piece 42 can measure the length of the shaft part 5. The mounting bracket 41 is perpendicular to the top surface of the mounting base 1. The moving component 43 can be provided with a transmission rod installed between the two mounting brackets 41 so that a convex frame is formed between it and the mounting bracket 41. The measuring piece 42 can be installed on the transmission rod, and the power piece provides power to drive the transmission piece and the measuring piece 42 installed on the transmission piece to move. The direction of movement of the measuring piece 42 is the same as the length direction of the shaft part 5.

[0045] like Figure 1-5 As shown, as a preferred embodiment of the present invention, the length measuring device of the shaft part 5 also includes a display screen and a key module, and the display screen and the key module are installed on the mounting base 1. The display screen is used to display the measured data of the shaft part 5, and the key module is used to control the measurement instructions of the measuring component 4.

[0046] In an embodiment of the utility model, preferably, the length measuring device for shaft parts 5 may also include a display screen and a key module installed on the mounting base 1, and a control module for processing signal instructions is provided. The display screen, the key module and the measuring component 4 are respectively connected to the control module. The key module can be used to turn on, off or input instructions for controlling the movement of the measuring component 4 so that the measuring part 42 can measure the length of the shaft parts 5, and after the measurement is completed, the data can be displayed on the display screen for the staff to observe or record.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for measuring the length of shaft parts, characterized in that: The shaft parts length measuring device comprises: A mounting base, wherein the mounting base is used for mounting the guide assembly and the measuring assembly; A guide assembly, the guide assembly being mounted on the mounting base, the guide assembly comprising a first guide rail and a first adjustment assembly, the first guide rail being used to guide the movement of the positioning assembly, the first adjustment assembly being mounted on the first guide rail, and the first adjustment assembly being used to adjust the movement position of the positioning assembly; A positioning assembly, wherein the positioning assembly is provided with a group of clamping members for positioning shaft parts, the group of clamping members are mounted side by side on the guide assembly, and the spacing between the clamping members is adjusted by a second adjustment assembly to facilitate positioning of the shaft parts; A measuring component is used to measure the length of a shaft part positioned on a clamping member.

2. The shaft parts length measuring device according to claim 1, characterized in that: The guide assembly also includes a mounting shell, the bottom surface of the mounting shell is provided with a first slide groove for sliding connection with the first guide rail, the first guide rail is provided with a group of parallel installations on the mounting base, the interior of the mounting shell is provided with a cavity for installing the first adjustment assembly, the top surface of the mounting shell is used to install the positioning assembly, and the first guide rail is used to guide the movement of the mounting shell and the positioning assembly installed on the mounting shell.

3. The shaft parts length measuring device according to claim 2, characterized in that: The first adjustment assembly includes a first adjustment rod and a group of positioning frames. One end of the first adjustment rod is inserted into the side of the mounting shell through a first connecting spring, and the other end is connected to the positioning frames through a group of connecting rods. The positioning frames are movably installed on the first guide rail through a second connecting spring. By pressing the first adjustment rod, the positioning frame is lifted through the connecting rod to move the mounting shell along the first guide rail.

4. The shaft parts length measuring device according to claim 1, characterized in that: The positioning components are provided in a group, and the positioning components are arranged in parallel in the guide direction of the guide component. Each positioning component is used to position shaft parts. The positioning component includes a group of second guide rails, and the second guide rails are installed in parallel on the guide component. The second guide rails are used to guide the movement of the clamping part.

5. The shaft parts length measuring device according to claim 4, characterized in that: The clamping member is provided with a mounting portion and a positioning portion, and a second slide groove and a first connecting groove are provided on the bottom surface of the mounting portion. The second slide groove is used for sliding connection with the second guide rail, and the first connecting groove is used for connecting with the second adjustment component. The mounting portion is provided with a U-shaped frame for installing the positioning portion, and the positioning portion abuts against the shaft parts to facilitate positioning of the shaft parts.

6. The shaft parts length measuring device according to claim 5, characterized in that: The second adjustment component includes a guide wheel and a group of guide rods. The guide wheel is provided with a plurality of teeth and is respectively connected to the guide rods in a transmission manner. A group of guide rods are respectively connected to the first connecting groove at the bottom of the clamping member. The guide rods are respectively tangent to the guide wheels. The guide wheels and guide rods are used to guide the movement of the clamping member to facilitate clamping of shaft parts.

7. The shaft parts length measuring device according to claim 1, characterized in that: The measuring component includes a mounting bracket and a measuring piece. The mounting bracket is mounted on a mounting base. The mounting bracket is used to mount the measuring piece. The measuring piece is mounted on the mounting bracket so that the measuring piece is located directly above the positioning component to facilitate the measuring piece to measure the length of the shaft part. The measuring piece is driven to move by the moving component so that the measuring piece can move along the length direction of the shaft part.

8. The shaft parts length measuring device according to claim 1, characterized in that: The shaft part length measuring device also includes a display screen and a key module, which are installed on a mounting base. The display screen is used to display the measured data of the shaft part, and the key module is used to control the measurement instructions of the measuring component.