Positioning fixtures and dimensional measurement systems based on arc-shaped product measurement

Abstract

This application provides a positioning fixture and a dimensional measurement system for measuring curved products. The positioning fixture includes a receiving base and a leveling adjustment component. The receiving base has a receiving groove with a curved bottom, which is adapted to fit the curved surface of the curved product. The leveling adjustment component is arranged circumferentially around the receiving groove. One end of the leveling adjustment component is connected to the receiving base and is configured to be movable up and down on the receiving base along the depth direction of the receiving groove. The other end of the leveling adjustment component has a leveling adjustment surface perpendicular to the depth direction of the receiving groove and is used to abut against the side of the curved product opposite to the curved surface. This positioning fixture for measuring curved products can improve both the efficiency and accuracy of dimensional measurement of curved products.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts processing technology, and in particular to a positioning fixture and dimensional measurement system based on the measurement of arc-shaped products. Background Technology

[0002] In injection molding, dimensional inspection of the molded curved product is not only a core part of quality control but also a crucial step in ensuring product function, assembly, and appearance. However, dimensional inspection of curved or irregularly shaped products requires flatness adjustment each time, resulting in low inspection efficiency. For example, the utility model patent application with application number CN202121353236.5 uses an arc-shaped receiving groove formed by a first clamping block and a second clamping block to clamp the irregularly shaped product, preventing it from deviating. In effect, the first and second clamping blocks clamp and limit the irregularly shaped product to a designated position in the receiving groove. However, for curved products, to ensure consistent reference and error control, the curved surface of the product needs to contact the curved surface of the receiving groove when measuring its dimensions. This makes it difficult to control the levelness of the curved product, thus affecting the accuracy of the dimensional measurement. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a positioning fixture and size measurement system based on arc product measurement that can improve the efficiency and accuracy of arc product size measurement.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A positioning fixture based on the measurement of arc-shaped products includes a receiving seat, the receiving seat having a receiving groove, the bottom of the receiving groove being an arc-shaped groove bottom, the arc-shaped groove bottom being used to adapt to the arc surface of the arc-shaped product, and the positioning fixture based on the measurement of arc-shaped products further includes a leveling adjustment component.

[0006] The leveling adjustment component is arranged circumferentially around the receiving groove. One end of the leveling adjustment component is connected to the receiving seat, and the leveling adjustment component is configured to be movable up and down on the receiving seat along the depth direction of the receiving groove. The other end of the leveling adjustment component is provided with a leveling adjustment surface, which is perpendicular to the depth direction of the receiving groove, and the leveling adjustment surface is used to abut against the side of the arc-shaped product away from the arc surface.

[0007] In one embodiment, the leveling component includes a retaining member and a transmission member, the transmission member being configured to drive the retaining member to slide along the depth direction of the receiving groove onto the receiving seat, and the leveling adjustment surface being located on the end of the retaining member away from the transmission member.

[0008] In one embodiment, the retaining member is threadedly connected to the transmission member, the transmission member is rotatably connected to the receiving seat, and the axial direction of the rotation axis of the transmission member is parallel to the depth direction of the receiving groove.

[0009] When the transmission component rotates on the receiving seat, the transmission component drives the abutment component to slide along the depth direction of the receiving groove.

[0010] In one embodiment, the transmission component is connected to the power output end of the rotation drive component so that the rotation drive component drives the transmission component to rotate relative to the receiving seat.

[0011] In one embodiment, the abutting member includes at least three abutting portions, which are located outside the receiving groove and arranged circumferentially around the receiving groove, and the ends of the three abutting portions away from the transmission member together form the levelness adjustment surface;

[0012] The transmission component includes at least three transmission parts, and the three abutting parts and the three transmission parts are arranged in a one-to-one correspondence. Each transmission part is rotatably connected to the receiving seat, and the axial direction of the rotation axis of each transmission part is parallel to the depth direction of the receiving groove.

[0013] As each of the transmission parts rotates on the receiving seat, each of the transmission parts drives the abutment part to slide along the depth direction of the receiving groove.

[0014] In one embodiment, the positioning fixture based on arc-shaped product measurement further includes a drive motor and at least three drive transmission components. The power output end of the drive motor is engaged with any one of the drive transmission components. A transmission belt is commonly sleeved on the three drive transmission components. The transmission belt is engaged with each of the drive transmission components. The three drive transmission components are connected to the three transmission parts in a one-to-one correspondence, so that each drive transmission component drives the corresponding transmission part to rotate on the receiving seat.

[0015] In one embodiment, each of the abutting parts includes a fixing part and an abutting part, one end of the fixing part is connected to the corresponding transmission part, and the abutting part is connected to the end of the fixing part away from the corresponding transmission part;

[0016] The three abutting parts together form the leveling adjustment surface on one side of the receiving groove.

[0017] In one embodiment, the abutting part and the fixing part are integrally formed.

[0018] In one embodiment, each of the abutment portions is provided with a buffer pad on the side of its surface near the receiving groove, and the side of the buffer pad away from the abutment portion together forms the leveling adjustment surface.

[0019] A dimensional measurement system includes a measuring stage and a positioning fixture based on the measurement of arc-shaped products as described in any of the above embodiments, wherein the receiving seat is mounted on the measuring stage.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] This utility model discloses a positioning fixture for measuring curved products. The bottom of the receiving groove is curved, and this curved bottom adapts to the curved surface of the product, thus limiting and fixing the curved surface of the product. A leveling adjustment component is configured to move vertically along the depth direction of the receiving groove on the receiving seat. One end of the leveling adjustment component has a leveling adjustment surface perpendicular to the depth direction of the receiving groove. This surface abuts against the side of the curved product away from the curved surface. The side of the curved product away from the curved surface is adjusted to be perpendicular to the depth direction of the receiving groove by the leveling adjustment surface. This means that the leveling adjustment component, by moving up and down to abut against the side of the curved product away from the curved surface, adjusts the level of the product. This effectively ensures the efficiency and accuracy of dimensional measurement of curved products. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the positioning fixture based on arc-shaped product measurement according to one embodiment of the present invention;

[0024] Figure 2 for Figure 1 The figure shows a cross-sectional view of a positioning fixture based on the measurement of an arc-shaped product.

[0025] Figure 3 for Figure 2The image shown is a magnified view of point A on the positioning fixture based on the measurement of the arc-shaped product.

[0026] Figure 4 for Figure 1 The diagram shows a partial usage state of the positioning fixture based on the measurement of an arc-shaped product. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] This application provides a positioning fixture for measuring curved products. The positioning fixture includes a receiving base and a leveling adjustment component. The receiving base has a receiving groove with a curved bottom, which is adapted to fit the curved surface of the curved product. The leveling adjustment component is arranged circumferentially around the receiving groove. One end of the leveling adjustment component is connected to the receiving base, and the leveling adjustment component is configured to be movable up and down on the receiving base along the depth direction of the receiving groove. The other end of the leveling adjustment component has a leveling adjustment surface, which is perpendicular to the depth direction of the receiving groove and is used to abut against the side of the curved product opposite to the curved surface.

[0031] The aforementioned positioning fixture for measuring curved products features a curved bottom in the receiving groove, which adapts to the curved surface of the product. This ensures that the curved bottom of the receiving groove limits and fixes the curved surface of the product. Furthermore, the leveling adjustment component is configured to move vertically along the depth direction of the receiving groove on the receiving seat. One end of the leveling adjustment component has a leveling adjustment surface perpendicular to the depth direction of the receiving groove. This surface abuts against the side of the curved product away from the curved surface. In other words, the side of the curved product away from the curved surface is adjusted to be perpendicular to the depth direction of the receiving groove by the leveling adjustment surface. This allows the leveling adjustment component to move up and down to abut against the side of the curved product away from the curved surface, thus adjusting the level of the product. This significantly improves the efficiency and accuracy of dimensional measurement of curved products.

[0032] To better understand the positioning fixture based on arc-shaped product measurement of this application, the following further explanation is provided:

[0033] Please refer to the following: Figures 1 to 4 One embodiment of the positioning fixture 10 based on measuring curved products includes a receiving base 100 and a leveling device 200. The receiving base 100 has a receiving groove 101, the bottom of which is an arc-shaped groove bottom 102, which is adapted to fit the arc surface of the curved product 20. The leveling device 200 is arranged circumferentially around the receiving groove 101. One end of the leveling device 200 is connected to the receiving base 100, and the leveling device 200 is configured to be movable up and down on the receiving base 100 along the depth direction of the receiving groove 101. The other end of the leveling device 200 has a leveling adjustment surface 201, which is perpendicular to the depth direction of the receiving groove 101 and is used to abut against the side of the curved product 20 away from the arc surface.

[0034] The aforementioned arc-shaped product 20 is based on the positioning fixture 10 measured by the arc-shaped product 20, such that the bottom of the receiving groove 101 is an arc-shaped groove bottom 102. The arc-shaped groove bottom 102 is used to adapt to the arc surface of the arc-shaped product 20, so that the arc-shaped groove bottom 102 of the receiving groove 101 limits and fixes the arc surface of the arc-shaped product 20. This allows the leveling adjustment component 200 to be configured to move up and down on the receiving seat 100 along the depth direction of the receiving groove 101, and one end of the leveling adjustment component 200 is provided with a water level perpendicular to the depth direction of the receiving groove 101. The flatness adjustment surface 201 is used to abut against the side of the curved product 20 away from the curved surface. That is, the side of the curved product 20 away from the curved surface is adjusted to be perpendicular to the depth direction of the receiving groove 101 by the flatness adjustment surface 201. In other words, the horizontal adjustment component 200 is raised and lowered to abut against the side of the curved product 20 away from the curved surface, thereby realizing the adjustment of the flatness of the curved product 20. This better ensures the efficiency of the size measurement of the curved product 20 and improves the accuracy of the size measurement of the curved product 20.

[0035] Please refer to the following: Figures 1 to 4 In one embodiment, the leveling adjustment component 200 includes a retaining component 210 and a transmission component 220. The transmission component 220 is configured to drive the retaining component 210 to slide along the depth direction of the receiving groove 101 onto the receiving seat 100. The leveling adjustment surface 201 is provided on the end of the retaining component 210 away from the transmission component 220, which better ensures the effectiveness of the retaining component 210 sliding along the depth direction of the receiving groove 101 on the receiving seat 100, thereby better ensuring the adjustment of the level of the arc-shaped product 20.

[0036] Please refer to the following: Figures 1 to 4 In one embodiment, the retaining member 210 is threadedly connected to the transmission member 220, which is rotatably connected to the receiving seat 100. The axial direction of the rotation axis of the transmission member 220 is parallel to the depth direction of the receiving groove 101. Furthermore, when the transmission member 220 rotates on the receiving seat 100, it drives the retaining member 210 to slide along the depth direction of the receiving groove 101. It can be understood that the threaded connection between the retaining member 210 and the transmission member 220 allows the transmission member 220 to drive the retaining member 210 to slide along the depth direction of the receiving groove 101 when rotating relative to the receiving seat 100, achieving a precision movement effect similar to a vernier caliper. This enables precise limit adjustment of the horizontality of the floor plan product, further ensuring the efficiency of dimensional measurement of the curved product 20 and improving the accuracy of dimensional measurement of the curved product 20.

[0037] Please refer to the following: Figures 1 to 4In one embodiment, the transmission component 220 is connected to the power output end of a rotation drive (not shown) so that the rotation drive drives the transmission component 220 to rotate relative to the receiving seat 100. Furthermore, the rotation drive is a drive motor, effectively realizing the electric drive of the transmission component 220, thereby further improving the efficiency of dimensional measurement of the arc-shaped product 20.

[0038] Please refer to the following: Figures 1 to 4 In one embodiment, the abutting member 210 includes at least three abutting portions 210a, which are located outside the receiving groove 101 and arranged circumferentially around the receiving groove 101. The ends of the three abutting portions 210a away from the transmission member 220 collectively form a leveling adjustment surface 201. Further, the transmission member 220 includes at least three transmission portions 220a, with the three abutting portions 210a and three transmission portions 220a arranged in a one-to-one correspondence. Each transmission portion 220a is rotatably connected to the receiving seat 100, and the axial direction of the rotation axis of each transmission portion 220a is parallel to the depth direction of the receiving groove 101. Further, when each transmission portion 220a rotates on the receiving seat 100, each transmission portion 220a drives the abutting portion 210a to slide along the depth direction of the receiving groove 101. Furthermore, the receiving seat is provided with a rotating hole, and the transmission part is at least partially disposed at the rotating hole and rotatably connected to the receiving seat. The abutment part passes through the rotating hole and is connected to the transmission part. Furthermore, the transmission part and the abutment part are threadedly connected. It can be understood that by forming a levelness adjustment surface 201 through at least three abutment parts 210a, and respectively limiting and fixing the arc-shaped product 20, the stability of the limiting and fixing of the arc-shaped product 20 is better ensured.

[0039] In one embodiment, the positioning fixture for measuring curved products further includes a drive motor and at least three drive transmission components. The power output end of the drive motor is engaged with any one of the drive transmission components. A transmission belt is commonly sleeved on the three drive transmission components, and the transmission belt is engaged with each drive transmission component. The three drive transmission components are connected to three transmission parts in a one-to-one correspondence, so that each drive transmission component drives the corresponding transmission part to rotate on the receiving seat, effectively realizing the electric drive of each abutment, thereby further improving the efficiency of dimensional measurement of curved products.

[0040] Please refer to the following: Figures 1 to 4In one embodiment, each abutment portion 210a includes a fixing portion 211 and an abutting portion 212. One end of the fixing portion 211 is connected to the corresponding transmission portion 220a, and the abutting portion 212 is connected to the end of the fixing portion 211 away from the corresponding transmission portion 220a. Furthermore, the abutting portions 212 of the three abutment portions 210a, near the receiving groove 101, collectively form a levelness adjustment surface 201, further ensuring effective contact between the levelness adjustment surface 201 and the curved product 20, thereby better ensuring the adjustment of the levelness of the curved product 20.

[0041] In one embodiment, the abutting part and the fixing part are integrally formed, which improves the structural stability and compactness of the abutting part.

[0042] In one embodiment, each abutment part has a buffer pad on the side near the receiving groove, and the side of the buffer pad away from the abutment part together form a level adjustment surface. The buffer pad reduces the damage to the curved product when the abutment part is pressed against the curved product.

[0043] This application also provides a dimensional measurement system. One embodiment of the dimensional measurement system includes a measuring table and a positioning fixture based on the measurement of curved products according to any of the above embodiments, with a receiving seat mounted on the measuring table. Further details are also available in the following documents. Figures 1 to 4 In this embodiment, the positioning fixture 10 based on the measurement of the arc-shaped product 20 includes a receiving seat 100 and a leveling device 200. The receiving seat 100 is provided with a receiving groove 101, the bottom of which is an arc-shaped groove bottom 102, which is adapted to fit the arc surface of the arc-shaped product 20. The leveling device 200 is arranged circumferentially around the receiving groove 101. One end of the leveling device 200 is connected to the receiving seat 100, and the leveling device 200 is configured to be movable up and down on the receiving seat 100 along the depth direction of the receiving groove 101. The other end of the leveling device 200 is provided with a leveling adjustment surface 201, which is perpendicular to the depth direction of the receiving groove 101 and is used to abut against the side of the arc-shaped product 20 away from the arc surface.

[0044] The aforementioned dimensional measurement system employs a positioning fixture based on the measurement of curved products, which effectively ensures the efficiency of dimensional measurement of curved products and significantly improves the accuracy of dimensional measurement of curved products.

[0045] Compared with the prior art, the present invention has at least the following advantages:

[0046] The arc-shaped product 20 of this utility model is based on the positioning fixture 10 for measuring the arc-shaped product 20, such that the bottom of the receiving groove 101 is an arc-shaped groove bottom 102, which is used to adapt to the arc surface of the arc-shaped product 20, so that the arc-shaped groove bottom 102 of the receiving groove 101 limits and fixes the arc surface of the arc-shaped product 20. This also allows the leveling adjustment component 200 to be configured to move up and down on the receiving seat 100 along the depth direction of the receiving groove 101, and one end of the leveling adjustment component 200 is provided perpendicular to the depth direction of the receiving groove 101. The level adjustment surface 201 is used to abut against the side of the curved product 20 away from the curved surface. That is, the side of the curved product 20 away from the curved surface is adjusted to be perpendicular to the depth direction of the receiving groove 101 by the level adjustment surface 201. In other words, the level adjustment component 200 is raised and lowered to abut against the side of the curved product 20 away from the curved surface, thereby realizing the level adjustment of the curved product 20. This better ensures the efficiency of the size measurement of the curved product 20 and improves the accuracy of the size measurement of the curved product 20.

[0047] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A positioning fixture for measuring curved products, comprising a receiving seat, the receiving seat having a receiving groove, the bottom of the receiving groove being an arc-shaped groove bottom, the arc-shaped groove bottom being adapted to fit the arc surface of the curved product, characterized in that, The positioning fixture based on arc-shaped product measurement also includes a leveling adjustment component; The leveling adjustment component is arranged circumferentially around the receiving groove. One end of the leveling adjustment component is connected to the receiving seat, and the leveling adjustment component is configured to be movable up and down on the receiving seat along the depth direction of the receiving groove. The other end of the leveling adjustment component is provided with a leveling adjustment surface, which is perpendicular to the depth direction of the receiving groove, and the leveling adjustment surface is used to abut against the side of the arc-shaped product away from the arc surface.

2. The positioning fixture based on arc-shaped product measurement according to claim 1, characterized in that, The leveling adjustment component includes a retaining component and a transmission component. The transmission component is configured to drive the retaining component to slide along the depth direction of the receiving groove onto the receiving seat. The leveling adjustment surface is located on the end of the retaining component away from the transmission component.

3. The positioning fixture based on arc-shaped product measurement according to claim 2, characterized in that, The retaining component is threadedly connected to the transmission component, and the transmission component is rotatably connected to the receiving seat. The axial direction of the rotation axis of the transmission component is parallel to the depth direction of the receiving groove. When the transmission component rotates on the receiving seat, the transmission component drives the abutment component to slide along the depth direction of the receiving groove.

4. The positioning fixture based on arc-shaped product measurement according to claim 3, characterized in that, The transmission component is connected to the power output end of the rotation drive component, so that the rotation drive component drives the transmission component to rotate relative to the receiving seat.

5. The positioning fixture based on arc-shaped product measurement according to claim 2, characterized in that, The abutting component includes at least three abutting parts, which are located outside the receiving groove and arranged circumferentially around the receiving groove, and the ends of the three abutting parts away from the transmission component together form the level adjustment surface; The transmission component includes at least three transmission parts, and the three abutting parts and the three transmission parts are arranged in a one-to-one correspondence. Each transmission part is rotatably connected to the receiving seat, and the axial direction of the rotation axis of each transmission part is parallel to the depth direction of the receiving groove. As each of the transmission parts rotates on the receiving seat, each of the transmission parts drives the abutment part to slide along the depth direction of the receiving groove.

6. The positioning fixture based on arc-shaped product measurement according to claim 5, characterized in that, The positioning fixture based on arc-shaped product measurement also includes a drive motor and at least three drive transmission components. The power output end of the drive motor is engaged with any one of the drive transmission components. A transmission belt is commonly sleeved on the three drive transmission components. The transmission belt is engaged with each of the drive transmission components. The three drive transmission components are connected to the three transmission parts in a one-to-one correspondence, so that each drive transmission component drives the corresponding transmission part to rotate on the receiving seat.

7. The positioning fixture based on arc-shaped product measurement according to claim 5, characterized in that, Each of the aforementioned abutting parts includes a fixing sub-part and an abutting sub-part, one end of the fixing sub-part being connected to the corresponding transmission part, and the abutting sub-part being connected to the end of the fixing sub-part away from the corresponding transmission part; The three abutting parts together form the leveling adjustment surface on one side of the receiving groove.

8. The positioning fixture based on arc-shaped product measurement according to claim 7, characterized in that, The abutting part and the fixing part are integrally formed.

9. The positioning fixture based on arc-shaped product measurement according to claim 7, characterized in that, Each of the abutting parts is provided with a buffer pad on the side of the receiving groove, and the side of the buffer pad away from the abutting part together forms the level adjustment surface.

10. A dimension measurement system, characterized in that, It includes a measuring table and a positioning fixture for measuring arc-shaped products according to any one of claims 1 to 9, wherein the receiving seat is mounted on the measuring table.

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