Pull rod tooling for a measuring device and a measuring device

Abstract

The application provides a pull rod tooling for a measuring device and the measuring device. The pull rod tooling is used for positioning a pull rod to be measured, the pull rod having a first end portion and a second end portion and an intermediate body portion, the first end portion having a first flat surface and a second flat surface, the pull rod tooling comprising: a base defining a horizontal reference surface; an end support seat mounted on the horizontal reference surface and having a U-shaped groove comprising a first side surface and a second side surface, the U-shaped groove being configured to have the first end portion of the pull rod clamped therein to fix the pull rod in a circumferential direction; and an intermediate support seat mounted on the horizontal reference surface and having a V-shaped groove comprising a first inclined surface and a second inclined surface opposite to each other, the first inclined surface and the second inclined surface collectively supporting the intermediate body portion of the pull rod to have a central axis of the pull rod in a horizontal direction. With the pull rod tooling of the application, it is easy to find a reference surface, determine a starting point coordinate, and assist programming and automatic measurement of the measuring device.

Description

Technical Field

[0001] This application relates to the field of measurement technology, and more specifically, to a tie rod fixture for a measuring device and a measuring device. Background Technology

[0002] In the manufacturing and inspection of electric spindle motors, full-dimensional measurement of components is crucial. Traditional measurement methods mostly rely on coordinate measuring machines (CMMs). However, when dealing with specific components like electric spindle motor tie rods, the complex shape and stringent tolerance requirements make full-dimensional measurement difficult. Specifically, the measurement of electric spindle motor tie rods mainly presents the following problems:

[0003] First, determining the starting point coordinates is difficult: Without the aid of specialized tooling, accurate positioning of the tie rod in both the axial and circumferential directions is impossible, making the determination of the starting point coordinates for tie rod measurement extremely complex. The inability to effectively confirm the starting point coordinates directly affects the automation and accuracy of subsequent measurements, and also means that many dimensions of the electric spindle motor components cannot be automatically measured using a coordinate measuring machine.

[0004] Second, the measurement efficiency is low: due to reasons such as the inability to effectively confirm the coordinates of the starting point, current measurement methods often require manual point-by-point sampling, which is not only inefficient, but also due to human factors, the pressure of sampling points cannot be controlled, resulting in a certain degree of difference in the measurement results and affecting the reliability of the measurement.

[0005] Due to the aforementioned issues, existing technologies have significant limitations in the full-size measurement of electric spindle motor tie rods, failing to meet the demands for accuracy, efficiency, and comprehensiveness in modern manufacturing and inspection. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a tie rod fixture for a measuring device, which can conveniently and accurately position the tie rod, determine the starting point coordinates, and thus assist in the programming and automatic measurement of a coordinate measuring machine, improving measurement accuracy and efficiency. Another purpose of this utility model is to provide a measuring device comprising the aforementioned tie rod fixture for a measuring device.

[0007] According to one aspect of the present invention, a tie rod fixture for a measuring device is provided, the measuring device being used to measure the dimensions of a tie rod, the tie rod fixture being configured to position the tie rod to be measured, the tie rod having opposite first and second ends and an intermediate body portion extending between the first and second ends, the outer circumference of the first end having a first flat surface and a second flat surface, the first flat surface and the second flat surface being arranged symmetrically and parallel to the central axis of the tie rod, the tie rod fixture comprising: a base defining a horizontal reference plane defined by an X direction and a Y direction, the X direction being a horizontal direction along the central axis of the tie rod, and the Y direction being a horizontal direction perpendicular to the X direction; and an end support mounted on the horizontal reference plane. The device comprises an upward-opening U-shaped groove, the U-shaped groove including a first side and a second side opposite to each other and a connecting surface connecting the first side and the second side. The U-shaped groove is configured to engage the first end of the pull rod within the U-shaped groove, such that the first side engages with the first flat surface and the second side engages with the second flat surface, and such that the first flat surface and the second flat surface are in a vertical state to fix the pull rod in the circumferential direction; and an intermediate support seat mounted on the horizontal reference plane, having an upward-opening V-shaped groove, the V-shaped groove including a first inclined surface and a second inclined surface opposite to each other, the first inclined surface and the second inclined surface jointly supporting the intermediate main body portion of the pull rod so that the central axis of the pull rod is in the horizontal direction.

[0008] In this way, the first and second flat surfaces of the first end of the tie rod fit precisely into the U-shaped groove to fix the tie rod in the circumferential direction, and the V-shaped groove supports the middle main body of the tie rod so that the central axis of the tie rod is in the horizontal direction, which facilitates the positioning of the tie rod at a predetermined position and angle, makes it easy to find the reference surface, and provides reliable support for the programming and point acquisition of the coordinate measuring machine.

[0009] According to an exemplary embodiment of this application, the tie rod fixture further includes: a vertical column, the vertical column being mounted on the horizontal reference plane and defining a vertical reference plane perpendicular to the horizontal reference plane, the vertical reference plane being positioned such that: when the first end of the tie rod is located within the U-shaped groove, the second end of the tie rod can be positioned to abut against the vertical reference plane to fix the tie rod in the axial direction.

[0010] In this way, a vertical column is provided so that the second end of the tie rod can abut against the vertical reference surface, thereby accurately fixing the tie rod in the axial direction, making it easier to find the reference surface, providing reliable support for the programming and point acquisition of the coordinate measuring machine, and further improving the measurement accuracy.

[0011] According to an exemplary embodiment of this application, the tie rod fixture further includes a positioning frame for positioning the base. The positioning frame includes a first positioning rod extending along the X direction and a second positioning rod extending along the Y direction. The first positioning rod and the second positioning rod together define a positioning space for accommodating the base. The base includes a first side and a second side that are perpendicular to each other. The first side is positioned to abut against the first positioning rod and the second side is positioned to abut against the second positioning rod, thereby fixing the base in the positioning space.

[0012] In this way, the positioning frame, through the combined use of the first and second positioning rods, ensures the precise fixation of the base, avoiding measurement errors caused by base displacement during the measurement process. This positioning method improves the stability of the entire measurement system, simplifies the operator's work, and ensures that each measurement is performed in the same coordinate system.

[0013] According to an exemplary embodiment of this application, the first side and the second side of the U-shaped groove are arranged symmetrically with respect to the vertical direction, such that the area of ​​the opening of the U-shaped groove gradually decreases from top to bottom along the vertical direction, thereby allowing the lower part of the first end to be suspended within the U-shaped groove, forming a measurement space below the first end for the measuring device to perform measurements.

[0014] In this way, the first and second sides of the U-shaped groove are arranged symmetrically to each other, forming an opening that gradually narrows in the vertical direction. This provides sufficient measurement space for the measuring device while keeping the tie rod securely suspended.

[0015] According to an exemplary embodiment of this application, the pull rod includes a size-enlarged portion adjacent to the first end, the outer peripheral dimension of the size-enlarged portion being larger than the outer peripheral dimension of the first end, and a recessed clearance area is formed at the U-shaped groove to receive the size-enlarged portion.

[0016] In this way, the clearance area within the U-shaped groove can accommodate the enlarged size of the tie rod, increasing the applicability of the tooling and enabling tie rods of different specifications to be accurately positioned and effectively measured, thus improving the versatility of the measuring device.

[0017] According to an exemplary embodiment of this application, the first inclined surface includes a first upper inclined surface section and a first lower inclined surface section, and the second inclined surface includes a second upper inclined surface section and a second lower inclined surface section. The first upper inclined surface section and the second upper inclined surface section are arranged opposite to each other to form the upper section of the V-shaped groove, and the first lower inclined surface section and the second lower inclined surface section are arranged opposite to each other to form the lower section of the V-shaped groove.

[0018] In this way, the design of the upper and lower sections of the V-groove allows for more stable support of the tie rod, ensuring measurement accuracy.

[0019] According to an exemplary embodiment of this application, the intermediate support includes a first intermediate support and a second intermediate support arranged along the X direction, wherein the first intermediate support is positioned such that the distance between the first intermediate support and the end support is equal to one-third of the length of the pull rod, and the second intermediate support is positioned such that the distance between the second intermediate support and the first intermediate support is equal to one-third of the length of the pull rod.

[0020] In this way, the arrangement of the first and second intermediate supports can evenly distribute the weight of the pull rod, preventing it from bending and ensuring the consistency of its posture during measurement, thus further improving the accuracy of the measurement.

[0021] According to an exemplary embodiment of this application, the base is rectangular in shape, and a handle is provided on each of the two long sides of the rectangle. Each handle includes: a first arm and a second arm connected to the base and opposite to each other, and a gripping part connected between the first arm and the second arm.

[0022] In this way, the handle design on the base allows the operator to easily move and adjust the base, improving ease of operation and efficiency.

[0023] According to an exemplary embodiment of this application, the tie rod fixture further includes: a track located on the base and extending along the Y direction, the vertical column having a joint adapted to engage with the track, the vertical column being mounted onto the track by engaging the joint with the track; and a locking member disposed on the vertical column, the locking member being configured to releasably lock the vertical column onto the track.

[0024] In this way, the combination of the vertical column and the track, along with the use of locking components, enables flexible adjustment and reliable fixation of the vertical column in the Y direction.

[0025] According to another aspect of the present invention, a measuring device is provided, the measuring device comprising a tie rod fixture for measuring the device according to any of the above embodiments, and the measuring device further comprising a coordinate measuring machine for measuring the tie rod positioned by the tie rod fixture.

[0026] In summary, the tie rod fixture and measuring device of this utility model can achieve several beneficial technical effects, the main effects of which are listed below.

[0027] First, the two symmetrical flat surfaces at the first end of the tie rod fit perfectly into the U-shaped groove, and the second end of the tie rod fits tightly against the vertical column, making it easier to find the reference surface and determine the starting point coordinates. This provides reliable support for programming and automatic point acquisition of the coordinate measuring machine, and solves the problem that existing measuring devices cannot measure many dimensions of the tie rod.

[0028] Secondly, the tie rod fixture is particularly suitable for fixing the tie rod of the electric spindle motor, and can also be used for positioning, programming and automatic measurement of other similar parts.

[0029] Third, the lever fixture solves the error and efficiency problems caused by manual sampling, and also reduces the labor intensity of operators. Attached Figure Description

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention, in which:

[0031] Figure 1 This is a schematic perspective view of a pull rod fixture for a measuring device according to an exemplary embodiment of the present invention, showing the pull rod already positioned.

[0032] Figure 2 This is another schematic perspective view of a pull rod fixture for a measuring device according to an exemplary embodiment of the present invention, showing the pull rod already positioned.

[0033] Figure 3 This is yet another schematic perspective view of a tie rod fixture for a measuring device according to an exemplary embodiment of the present invention, wherein there is no tie rod.

[0034] Figure 4 This is yet another schematic perspective view of a tie rod fixture for a measuring device according to an exemplary embodiment of the present invention, wherein there is no tie rod.

[0035] Figure 5This is a schematic perspective view showing a pull rod that can be positioned by the pull rod fixture for measuring devices of this invention.

[0036] The accompanying figure is labeled as follows:

[0037] 100. Pull rod

[0038] 110. First end

[0039] 111. First flat surface

[0040] 112. Second flat surface

[0041] 113. First arc segment

[0042] 114. Second arc segment

[0043] 115. End face

[0044] 120. Middle Main Body

[0045] 130. Second end

[0046] 140. Enlarged Size Section

[0047] 200. Base

[0048] 210. Horizontal reference plane

[0049] 220. First side

[0050] 230. Second side

[0051] 240. Locking hole

[0052] 300. End support seat

[0053] 310. U-shaped groove

[0054] 311. First side view

[0055] 312. Second side view

[0056] 313. Connecting surface

[0057] 320. Avoidance Zone

[0058] 321. Avoid vertical planes

[0059] 322. Avoid horizontal surfaces

[0060] 330. Measurement Space

[0061] 400, Intermediate Support

[0062] 410. First intermediate support seat

[0063] 420. Second intermediate support

[0064] 430. First inclined plane

[0065] 431. Section on the first inclined plane

[0066] 432. Lower section of the first inclined plane

[0067] 440. Second slope

[0068] 441. Section on the second slope

[0069] 442. Lower section of the second slope

[0070] 450. Trench

[0071] 500, Vertical column

[0072] 510. Vertical reference plane

[0073] 520. Joint

[0074] 530. Inclined support plate

[0075] 600, Positioning Frame

[0076] 610. First positioning rod

[0077] 620. Second positioning rod

[0078] 700, handle

[0079] 710. The First Arm

[0080] 720. The Second Arm

[0081] 730. Grab Department

[0082] 800, Track

[0083] 900. Locking components Detailed Implementation

[0084] To make the objectives, technical solutions, and advantages of this utility model clearer, the following embodiments are provided to further illustrate the utility model in detail. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. The nouns and pronouns referring to persons in this patent application are not limited to specific genders.

[0085] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. In the following detailed description, reference is made to the accompanying drawings, which form part of this specification, wherein specific embodiments in which the present invention may be practiced are shown by way of example. With respect to the drawings, directional terms such as “top,” “bottom,” “inner,” “outer,” “upper,” and “lower” are used with reference to the orientation of the drawings described.

[0086] First refer to Figure 1 and Figure 2 The diagram shows schematic perspective views of a tie rod fixture for a measuring device from two different angles, according to an exemplary embodiment of the present invention. The measuring device may include a coordinate measuring machine (CMM) for measuring the tie rod positioned by the tie rod fixture, for example, measuring dimensional characteristics such as diameter, length, coaxiality, and straightness of various sections of the tie rod. Since the purpose of this invention is to position the tie rod before measurement, to avoid confusion, this document will not elaborate on how to use a CMM for point sampling and automatic measurement.

[0087] Reference Figure 1 The pull rod 100 can be, for example, an electric spindle motor pull rod, having opposite first ends 110 and second ends 130, and an intermediate body portion 120 extending between the first ends 110 and the second ends 130. (See reference...) Figure 2 The first end portion 110 has a first flat surface 111 and a second flat surface 112 on its outer circumference. The first flat surface 111 and the second flat surface 112 are arranged symmetrically and parallel to the central axis of the pull rod 100. The first end portion 110 may also include a first arc segment 113 and a second arc segment 114 connecting the first flat surface 111 and the second flat surface 112. The first arc segment 113 and the second arc segment 114 are also arranged symmetrically with respect to the central axis of the pull rod 100. The first end portion 110 may also include a first end face 115. It is understood that the relevant dimensions of the first end face 115 can also be measured using a coordinate measuring machine.

[0088] Reference Figure 1 and Figure 2 The tie rod fixture can mainly include the following components: base 200, end support 300, intermediate support 400, vertical column 500, and positioning frame 600, etc. These components are described in detail below.

[0089] Reference Figure 1The base 200 defines a horizontal reference plane 210 defined by the X and Y directions. The X direction is the horizontal direction along the central axis of the tie rod 100, i.e., the axial direction of the tie rod, and the Y direction is the horizontal direction perpendicular to the X direction. Therefore, a horizontal reference plane 210 can be established. Figure 1 The coordinate measuring system shown in the figure illustrates the X, Y, and Z directions.

[0090] Reference Figure 1 and Figure 3 The end support 300 is mounted on the horizontal reference plane 210 and has an upward-opening U-shaped groove 310. The U-shaped groove 310 includes a first side surface 311 and a second side surface 312 facing each other, and a connecting surface 313 connecting the first side surface 311 and the second side surface 312. The U-shaped groove 310 is configured such that the first end 110 of the pull rod 100 is engaged in the U-shaped groove 310, such that the first side surface 311 mates with the first flat surface 111, and the second side surface 312 mates with the second flat surface 112, and the first flat surface 111 and the second flat surface 112 are in a vertical state to fix the pull rod 100 in the circumferential direction. It should be noted that the distance between the first side surface 311 and the second side surface 312 of the U-shaped groove 310 is approximately equal to the distance between the first flat surface 111 and the second flat surface 112 to achieve a clearance fit between the first end 110 of the pull rod 100 and the U-shaped groove 310. For example, the distance between the first flat surface 111 and the second flat surface 112 can be 28 mm, with a tolerance range of -0.05 mm to -0.1 mm, while the distance between the first side 311 and the second side 312 of the U-shaped groove 310 can be 28 mm, with a tolerance range of -0 mm to -0.05 mm.

[0091] Reference Figure 2 The first side surface 311 and the second side surface 312 of the U-shaped groove 310 are arranged symmetrically with respect to the vertical direction, such that the area of ​​the opening of the U-shaped groove 310 gradually decreases from top to bottom along the vertical direction. This allows the lower part of the first end 110 to be suspended within the U-shaped groove 310, forming a measurement space 330 below the first end 110 for the measuring device to perform measurements. Due to the small inclination angle, in Figure 2 The tilt is not clearly visible in the middle.

[0092] Reference Figure 1 and Figure 4 The intermediate support 400 is mounted on the horizontal reference plane 210 and has an upward-opening V-shaped groove. The V-shaped groove includes a first inclined surface 430 and a second inclined surface 440 that are opposite each other. The first inclined surface 430 and the second inclined surface 440 together support the intermediate main body portion 120 of the tie rod 100 so that the central axis of the tie rod 100 is in the horizontal direction. (Refer to...) Figure 4The first inclined surface 430 may include an upper section 431 and a lower section 432, and the second inclined surface 440 may include an upper section 441 and a lower section 442. The upper section 431 and the lower section 441 of the first inclined surface are arranged opposite each other to form the upper section of the V-shaped groove, and the lower section 432 and the lower section 442 of the first inclined surface are arranged opposite each other to form the lower section of the V-shaped groove. Furthermore, Figure 4 The diagram also shows a groove 450 in a V-groove, which can be used to place clamping devices such as pressure plates or bolts to prevent the rod to be measured from moving.

[0093] Reference Figure 1 The vertical column 500 is mounted on the horizontal reference plane 210 and defines a vertical reference plane 510 perpendicular to the horizontal reference plane 210. The vertical reference plane 510 is positioned such that when the first end 110 of the tie rod 100 is located on the U-shaped groove 310, the second end 130 of the tie rod 100 can be positioned to abut against the vertical reference plane 510 to fix the tie rod 100 in the axial direction (i.e., the X direction).

[0094] The two symmetrical flat surfaces of the first end 110 of the tie rod fit precisely into the U-shaped groove 310, and the second end 130 of the tie rod fits tightly against the vertical column 500. This makes it easier to find the reference surface and determine the coordinates of the starting point, providing reliable support for the programming and automatic point acquisition of the coordinate measuring machine.

[0095] Reference Figure 1 and Figure 3 The positioning frame 600 is used to position the base 200. The positioning frame 600 includes a first positioning rod 610 extending along the X direction and a second positioning rod 620 extending along the Y direction. The first positioning rod 610 and the second positioning rod 620 together define a positioning space for accommodating the base 200. The base 200 includes a first side 220 and a second side 230 that are perpendicular to each other. Figure 3 (As shown), the first side 220 is positioned against the first positioning rod 610 and the second side 230 is positioned against the second positioning rod 620, thereby fixing the base 200 in the positioning space. Figure 3 As shown. Two elongated holes are formed on the first positioning rod 610, and one elongated hole is formed on the second positioning rod 620. It is understood that by using threaded parts that engage with these elongated holes, the positioning frame 600 can be fixed in a predetermined position, such as a predetermined position on a platform. It should be noted that, in another embodiment of this invention, a locking hole 240 may be alternatively or additionally provided on the base 200, such as... Figure 4 As shown, there are four locking holes, which, when engaged with locking elements passing through them, can secure the base 200 to a platform below the base, such as a marble surface.

[0096] Reference Figure 1 and Figure 4 The pull rod 100 may include a size-enlarged portion 140 adjacent to the first end 110, the outer peripheral dimension of the size-enlarged portion 140 being larger than the outer peripheral dimension of the first end 110, and a recessed clearance area 320 being formed at the U-shaped groove 310. Figure 4 (as shown), to receive the enlarged portion 140. From Figure 4 As can be seen, the avoidance area 320 is achieved by the notches on the two side walls forming the U-shaped groove 310. The notches include mutually perpendicular avoidance vertical surfaces 321 and avoidance horizontal surfaces 322.

[0097] Reference Figure 1 The intermediate support 400 may include a first intermediate support 410 and a second intermediate support 420 arranged along the X direction. The first intermediate support 410 is positioned such that the distance between the first intermediate support 410 and the end support 300 is equal to one-third of the length of the tie rod 100. The second intermediate support 420 is positioned such that the distance between the second intermediate support 420 and the first intermediate support 410 is equal to one-third of the length of the tie rod 100. It is understood that the number of intermediate supports can vary depending on the length of the tie rod. For example, for a shorter tie rod, only one intermediate support may be used, while for a very long tie rod, more than two intermediate supports may be used.

[0098] Reference Figure 4 The base 200 can be rectangular in shape, with a handle 700 on each of the two long sides of the rectangle. Each handle 700 includes a first arm 710 and a second arm 720 connected to the base 200 and opposite to each other, and a gripping part 730 connected between the first arm 710 and the second arm 720.

[0099] Reference Figure 4 The tie rod fixture may further include: a track 800 located on the base 200 and extending along the Y direction; a vertical column 500 having a joint 520 adapted to engage with the track 800, wherein the vertical column 500 is mounted onto the track 800 by engaging with the track 800 through the joint 520; and a locking member 900 disposed on the vertical column 500, the locking member being configured to releasably lock the vertical column 500 onto the track 800. (See reference...) Figure 4 The tie rod fixture may also include an inclined support plate 530, which is connected between the joint 520 and the vertical column 500 to strengthen the support.

[0100] According to another aspect of the present invention, a measuring device is also provided, which may include the tie rod fixture as described above, and may also include a coordinate measuring machine for measuring the tie rod positioned at a predetermined position and predetermined angle by the tie rod fixture.

[0101] To facilitate understanding of the present invention, the main process of positioning and measuring the tie rod using a measuring device is briefly explained below. First, [the following text is incomplete and requires further context to translate accurately.] Figure 5 The tie rod 100 to be tested, as shown, is positioned on a tie rod fixture such that the first end 110 of the tie rod is engaged in the U-shaped groove 310, while the second end 130 of the tie rod abuts against the vertical reference surface 510 of the vertical column 500. The middle main body 120 of the tie rod is supported on the V-shaped groove. Thus, the U-shaped groove 310 determines the tie rod's position in a predetermined circumferential direction, i.e., the first flat surface 111 and the second flat surface 112 are vertical. The vertical reference surface of the vertical column 500 determines the tie rod's predetermined position in the axial direction (i.e., the X direction), and the V-shaped groove determines the tie rod's predetermined height in the Z direction. The U-shaped groove and V-shaped groove also determine the tie rod's predetermined position in the Y direction. Therefore, the coordinates of the tie rod's measurement starting point can be determined, and a coordinate measuring machine can be programmed to automatically collect points along a predetermined path for automatic measurement and output the measurement results.

[0102] It is understood that the tie rod fixture of this utility model can also be used directly or with appropriate adjustments to position similar tie rods other than electric spindle motor tie rods, as long as the tie rod has two symmetrical and parallel flat surfaces for locking by U-shaped grooves.

[0103] In summary, the tie rod fixture of this invention for measuring devices can position the tie rod at a predetermined position and angle in a known predetermined coordinate system, assisting the coordinate measuring machine in programming and automatic measurement, achieving superior performance compared to existing technologies. In contrast, existing measuring devices cannot accurately position the tie rod in the axial and circumferential directions, nor can they determine the starting point coordinates, thus hindering the programming and automatic measurement of the coordinate measuring machine.

[0104] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tie rod fixture for a measuring device for measuring the dimensions of a tie rod (100), the tie rod fixture being configured to position the tie rod (100) to be measured, the tie rod (100) having opposite first ends (110) and second ends (130) and an intermediate body portion (120) extending between the first ends (110) and the second ends (130), the outer circumference of the first ends (110) having a first flat surface (111) and a second flat surface (112), the first flat surface (111) and the second flat surface (112) being symmetrically and parallelly arranged with respect to the central axis of the tie rod (100), characterized in that, The tie rod fixture includes: A base (200) defines a horizontal reference plane (210) defined by an X direction and a Y direction, wherein the X direction is a horizontal direction along the central axis of the tie rod (100) and the Y direction is a horizontal direction perpendicular to the X direction; An end support (300) is mounted on the horizontal reference plane (210) and has an upward-opening U-shaped groove (310). The U-shaped groove (310) includes a first side surface (311) and a second side surface (312) opposite to each other, and a connecting surface (313) connecting the first side surface (311) and the second side surface (312). The U-shaped groove (310) is configured to engage the first end (110) of the pull rod (100) within the U-shaped groove (310), such that the first side surface (311) mates with the first flat surface (111), and the second side surface (312) mates with the second flat surface (112), and such that the first flat surface (111) and the second flat surface (112) are in a vertical state to fix the pull rod (100) in the circumferential direction; and An intermediate support (400) is mounted on the horizontal reference plane (210) and has an upward-opening V-groove. The V-groove includes a first inclined surface (430) and a second inclined surface (440) that are opposite each other. The first inclined surface (430) and the second inclined surface (440) together support the intermediate main body portion (120) of the pull rod (100) so that the central axis of the pull rod (100) is in the horizontal direction.

2. The tie rod tooling for a measuring device of claim 1, wherein, The tie rod fixture further includes a vertical column (500) mounted on the horizontal reference plane (210) and defining a vertical reference plane (510) perpendicular to the horizontal reference plane (210). The vertical reference plane (510) is positioned such that when the first end (110) of the tie rod (100) is located in the U-groove (310), the second end (130) of the tie rod (100) can be positioned to abut against the vertical reference plane (510) to fix the tie rod (100) in the axial direction.

3. The tie rod fixture for a measuring device according to claim 2, characterized in that, The tie rod fixture further includes a positioning frame (600) for positioning the base (200). The positioning frame (600) includes a first positioning rod (610) extending along the X direction and a second positioning rod (620) extending along the Y direction. The first positioning rod (610) and the second positioning rod (620) together define a positioning space for accommodating the base (200). The base (200) includes a first side (220) and a second side (230) that are perpendicular to each other. The first side (220) is positioned against the first positioning rod (610) and the second side (230) is positioned against the second positioning rod (620), thereby fixing the base (200) in the positioning space.

4. The tie rod tool for a measuring device according to any one of claims 1 to 3, characterized in that The first side (311) and the second side (312) of the U-shaped groove (310) are arranged symmetrically with respect to the vertical direction, such that the area of ​​the opening of the U-shaped groove (310) gradually decreases from top to bottom along the vertical direction, thereby allowing the lower part of the first end (110) to be suspended and supported in the U-shaped groove (310), so as to form a measurement space (330) for the measuring device to perform measurements below the first end (110).

5. The tie rod fixture for a measuring device according to any one of claims 1 to 3, characterized in that, The pull rod (100) includes a size-enlarged portion (140) adjacent to the first end (110), the outer peripheral dimension of the size-enlarged portion (140) being larger than the outer peripheral dimension of the first end (110), and a recessed clearance area (320) is formed at the U-shaped groove (310) to receive the size-enlarged portion.

6. The tie rod tooling for a measuring device of any one of claims 1 to 3, wherein, The first inclined surface (430) includes a first upper section (431) and a first lower section (432), and the second inclined surface (440) includes a second upper section (441) and a second lower section (442). The first upper section (431) and the second upper section (441) are arranged opposite to each other to form the upper section of the V-shaped groove, and the first lower section (432) and the second lower section (442) are arranged opposite to each other to form the lower section of the V-shaped groove.

7. The tie rod tooling for a measuring device of any one of claims 1 to 3, wherein, The intermediate support (400) includes a first intermediate support (410) and a second intermediate support (420) arranged along the X direction. The first intermediate support (410) is positioned such that the distance between the first intermediate support (410) and the end support (300) is equal to one-third of the length of the pull rod (100). The second intermediate support (420) is positioned such that the distance between the second intermediate support (420) and the first intermediate support (410) is equal to one-third of the length of the pull rod (100).

8. The tie rod tooling for a measuring device of any one of claims 1 to 3, wherein, The base (200) is rectangular in shape, and a handle (700) is provided on each of the two long sides of the rectangle. Each handle (700) includes: a first arm (710) and a second arm (720) connected to the base (200) and opposite to each other, and a gripping part (730) connected between the first arm (710) and the second arm (720).

9. The tie rod tooling for a measuring device of claim 2, wherein, The tie rod fixture also includes: A track (800), located on the base (200) and extending along the Y direction, the vertical column (500) having a joint (520) adapted to engage with the track (800), the vertical column (500) being mounted onto the track (800) by engaging the joint (520) with the track (800); and A locking component (900) is disposed on the vertical column (500) and the locking component (900) is configured to releaseably lock the vertical column (500) onto the track (800).

10. A measuring device, characterized by The measuring device includes a tie rod fixture for measuring the device according to any one of claims 1 to 9, and the measuring device further includes a coordinate measuring machine for measuring the tie rod positioned by the tie rod fixture.

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