Simple scanning measurement composite support

Abstract

The utility model discloses a simple scanning measurement composite support, belongs to the field of testing fixture clamps, and solves the problems that a conventional testing fixture in the prior art is long in development time, high in manufacturing cost and very time-consuming in work. According to the invention, an even number of groups of measuring bracket components are arranged; all the measuring bracket components are arranged in pairs and are symmetrically arranged on the upper end surface of the base; the measuring bracket component comprises a plurality of measuring bracket groups which are arranged at intervals; the upper end face of the base is a rectangular face, and four rectangular corners of the upper end face of the base are provided with reference circular truncated cones respectively. The reference circular truncated cone adopts a concentric cylinder; and a plurality of laser marking points are arranged around the reference circular truncated cone. The simple scanning and measuring composite support is short in manufacturing period and low in cost, avoids the operation of pasting points again in each time of scanning, and improves the use efficiency.

Description

Technical Field

[0001] The utility model relates to a simple scanning measurement composite bracket, belonging to the field of inspection tools and clamps. Background Art

[0002] Along with the development process of automobile body structural parts, the quality measurement of parts is also a very important task in order to obtain stamping parts that meet the technical requirements of vehicle installation by continuously optimizing part design and adjusting stamping dies. The conventional solution in the industry is to develop corresponding inspection fixtures for specific parts, and then position the parts on the inspection fixtures for three-coordinate measurement or laser scanning.

[0003] As the project development cycle of body structural parts is getting shorter and shorter, the debugging, production and delivery nodes of newly developed stamping parts face considerable challenges. Therefore, a solution that can quickly implement part measurement is urgently needed to support the process quality inspection of stamping part debugging and production, so as to avoid the problems of long development time and high manufacturing cost of conventional inspection tools. Since conventional inspection tools are large in size and weight, self-weight deformation is inevitable. Before measurement, the inspection tools need to be manually leveled in advance to ensure that the actual value of the inspection tool measurement benchmark is consistent with the nominal value. This work is very time-consuming. Utility Model Content

[0004] The utility model provides a simple scanning and measuring composite bracket, which has a short production period and low cost, avoids the operation of re-sticking points every time scanning, and improves the use efficiency.

[0005] The technical solution adopted by the utility model is a simple scanning measurement composite bracket, comprising a base, the base having a planar upper end surface, and a plurality of measurement bracket components on the upper end surface of the base;

[0006] There are an even number of measuring bracket components; all measuring bracket components are arranged in pairs and symmetrically arranged on the upper end surface of the base;

[0007] The measuring bracket component comprises a plurality of measuring bracket groups, and the measuring bracket groups are arranged at intervals;

[0008] The upper end surface of the base is a rectangular surface, and reference frustums are respectively arranged at the four corners of the upper end surface of the base; the reference frustum adopts an embedded cylindrical structure, and the upper end diameter is Lower end diameter The assembly relationship between the lower end and the mounting hole on the base adopts H7 / h6 and is fastened with bolts;

[0009] A number of laser marking points are arranged around the reference frustum.

[0010] Optimized, the above-mentioned simple scanning and measuring composite bracket has a center coordinate nameplate marked with coordinate information of the reference frustum installed on the upper end surface of the base;

[0011] There are four circle center coordinate nameplates, which are set corresponding to the reference frustum.

[0012] Optimized, the above-mentioned simple scanning and measuring composite bracket, the measuring bracket group includes a positioning seat component and a plurality of supporting seat components;

[0013] The positioning seat assembly includes a columnar seat, the lower end of the columnar seat is mounted on the upper end surface of the base, the upper end surface of the columnar seat has a zero point and a positioning pin is installed in the middle of the zero point;

[0014] The support seat assembly comprises a second columnar seat, the lower end of which is mounted on the upper end surface of the base, and the upper end of which is provided with a positioning column.

[0015] Optimally, in the above-mentioned simple scanning and measuring composite bracket, a countersunk hole is constructed at the upper end of the columnar seat two, a nut is fixed at the opening of the countersunk hole, and the positioning column and the positioning column are inserted into the nut and threadedly connected with the nut.

[0016] Optimized, the above-mentioned simple scanning and measuring composite bracket has installation angle codes on both sides of the columnar seat and both sides of the positioning column respectively, the side of the columnar seat, the side of the positioning column and the installation angle code are fixed by bolts, and the installation angle code is fixed to the upper end surface of the base by bolts.

[0017] Optimally, the above-mentioned simple scanning and measuring composite bracket has a plurality of threaded holes constructed on the upper end surface of the base, and the mounting angle code is fixed to the threaded holes on the upper end surface of the base by bolts.

[0018] The advantages of this application are:

[0019] 1. Compared with conventional inspection fixtures, the composite bracket has a short production cycle and low cost, and can meet the project node cycle requirements to the greatest extent.

[0020] 2. The composite bracket adopts a lightweight design of aluminum alloy profile, which reduces the weight of the body and reduces the slight deformation of the base.

[0021] 3. The height of all adjustable support bases can be precisely adjusted to suit different products.

[0022] 4. The base adopts a common design, and parts with a length and width less than 1500mm*650mm can be placed on the base.

[0023] 5. The design of the fixed laser marking point groove can effectively reduce the loss of the marking point, avoid the operation of re-sticking the point every time scanning, and improve the use efficiency. At the same time, the fixed marking point can be used as the coding point in the scanning program to further improve the scanning accuracy through the precise position of the coding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a schematic diagram of the left and right parts of the product in the embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the structure of this application;

[0026] Figure 3-1 A top view of the structure of an embodiment of the present application;

[0027] Figure 3-2 for Figure 3-1 II Sectional view

[0028] Figure 4 This is an installation diagram of the left and right parts of the product in the embodiment of the present application;

[0029] Figure 5-1 It is a structural schematic diagram of the support seat assembly;

[0030] Figure 5-2 is a top view of the support base assembly;

[0031] Figure 5-3 for Figure 5-2 JJ sectional view;

[0032] Figure 6 This is an enlarged structural diagram of the laser marking point. DETAILED DESCRIPTION

[0033] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] As shown in the figure, the utility model is a simple scanning measurement composite bracket, including a base 1, the base 1 has a planar upper end surface, and a plurality of measurement bracket components are arranged on the upper end surface of the base 1. The number of the measurement bracket components is set in an even number. In this embodiment, there are two measurement bracket components, and it can also be set to an even number such as four or eight.

[0035] In this embodiment, two groups of measuring bracket components are symmetrically arranged on the upper end surface of the base 1.

[0036] The upper end face of the base 1 is a rectangular face, and reference frustums are respectively arranged at the four corners of the rectangle of the upper end face of the base 1; the reference frustums are concentric cylinders. As shown in the figure, during measurement, a coordinate system is established with the center of the plane on the reference frustum A1 as the origin, the center of the plane on the reference frustum A2 as the point on the X-axis, and the center of the plane on the reference frustum A3 as the point on the Y-axis, and the center coordinate nameplates 4 of A1-1, A2-2, A3-3, and A4-4 are made respectively. There are four center coordinate nameplates 4, and the center coordinate nameplates 4 are arranged corresponding to the reference frustums.

[0037] A plurality of laser marking points 3 are arranged around the reference truncated cone, and the laser marking points 3 are arranged on the upper end surface of the base 1 and around the reference truncated cone. The laser marking points 3 are formed by numerical control machining, and the laser marking points are placed in grooves on the base 1 by numerical control machining.

[0038] When using laser scanning measurement, fixed laser marking point grooves are designed around the reference frustum A1, reference frustum A2, reference frustum A3, and reference frustum A4 of the composite bracket base. The groove diameter is 6.0mm and the depth is 0.1mm. In addition, a small number of laser marking points need to be randomly attached to the measured surface of the 001-left part. This step is to mark the surface features of the product in space. The distance between each pair of adjacent marking points should not exceed 200mm. If laser scanning measurement is not used, this step can be omitted.

[0039] In this application, the reference truncated cone adopts a concentric cylinder to reduce the installation error. As shown in the figure, in this embodiment, the reference truncated cone adopts an embedded cylindrical structure with an upper diameter of Lower end diameter The assembly relationship between the lower end and the mounting hole on the base adopts H7 / h6 and is fastened with bolts.

[0040] The measuring bracket component comprises a plurality of measuring bracket groups, and the measuring bracket groups are arranged at intervals. The measuring bracket group comprises a positioning seat assembly and a plurality of supporting seat assemblies.

[0041] The positioning seat assembly includes a columnar seat 501, the lower end of the columnar seat 501 is installed on the upper end surface of the base 1, the upper end surface of the columnar seat 501 has a zero point and a positioning pin 502 is installed in the middle of the zero point.

[0042] The support seat assembly includes a second columnar seat 601 , the lower end of the second columnar seat 601 is installed on the upper end surface of the base 1 , and the upper end of the second columnar seat 601 has a positioning column 602 .

[0043] A countersunk hole is constructed at the upper end of the columnar seat 601 , and a nut 603 is fixed at the opening of the countersunk hole. The positioning column 602 is inserted into the nut 603 and threadedly connected with the nut 603 .

[0044] Installation angle codes 7 are respectively provided on both sides of the columnar seat 501 and the positioning column 602. The side of the columnar seat 501 and the side of the positioning column 602 are fixed to the installation angle codes 7 by bolts, and the installation angle codes 7 are fixed to the upper end surface of the base 1 by bolts.

[0045] The design of the composite bracket of the present application is to constrain the left and right parts respectively on the zero points of the eight adjustable support seats of the bracket. The zero point is formed by the top plane of the columnar seat 601, and the remaining degrees of freedom of the product are constrained by the main and auxiliary positioning pins 502 on the four positioning seat assemblies to meet the reference data preparation requirements before laser scanning and three-coordinate measurement.

[0046] The following is a detailed description of the laser scanning measurement and three-dimensional coordinate measurement process of the 001-left part placed on the composite bracket. The right part is operated symmetrically. As shown in the figure, place the 001-left part on the Z1, Z2, Z3, and Z4 zero-sticking points, and insert the 502-B main positioning pin and the 502-C auxiliary positioning pin into the corresponding positioning holes. In order to prevent the part from shaking during measurement, hot melt glue is injected between the contact surface of the product and the zero-sticking point, and it can be fixed after cooling.

[0047] In order to meet the operation requirements of different parts, a plurality of threaded holes can be constructed on the upper end surface of the base (1) according to the shape of the parts and the installation positions of the positioning seat assembly and the support seat assembly, and the installation angle code (7) is fixed to the threaded holes on the upper end surface of the base (1) by bolts. When measuring different parts, it is only necessary to install the positioning seat assembly and the support seat assembly in different threaded holes to meet the installation requirements of the supporting and positioning components of different parts.

[0048] When the positioning and placement of the parts to be measured is completed, the measurement of the composite bracket and the product begins.

[0049] The laser scanning measurement steps are as follows.

[0050] Laser scanning operation: Turn on the handheld laser scanner, first perform positioning scans on the fixed laser marking points around the A1, A2, A3, and A4 reference frustum of the composite bracket and the laser marking points on the product, and then start the surface precision scanning. The scanner uses the laser marking points as positioning references to remodel the reference frustum of the composite bracket and the product geometry and output a specific data model.

[0051] Data comparison measurement operation: Import the scanned data model and the designed reference data into the GOMInspect metrology software. Set the best fit alignment between the 4 reference frustums A1-A4 in the reference data model and the 4 reference frustums A1-A4 in the scanned data model in the software. Fit A1-A4 in the scanned data to A1-A4 in the reference data with the minimum average error, so that the scanned data is aligned to the coordinate system of the reference data. Then, use the software to measure the deviation between the scanned data and the reference data and output a deviation report.

[0052] Three-coordinate measurement steps:

[0053] Place the composite bracket on the three-coordinate workbench and use hot melt adhesive to fix the product to the zero point. Measure the center positions of the A1-reference frustum, A2-reference frustum, and A3-reference frustum in the machine coordinate system (absolute coordinate system) on the three-coordinate measuring machine; input the nameplate coordinate values ​​corresponding to the A1-1 center coordinate nameplate, A2-2 center coordinate nameplate, and A3-3 center coordinate nameplate on the composite bracket into the three-coordinate measurement software to establish the bracket coordinate system (relative coordinate system) relative to the machine coordinate system, and fit and align the center positions of the A1, A2, and A3 reference frustums in the absolute coordinate system to the center coordinate nameplate coordinate values ​​corresponding to A1, A2, and A3 in the bracket coordinate system. In order to reduce the system establishment error, the measurement software is usually set to automatically iterate the system establishment 3 times to complete the establishment of the bracket coordinate system.

[0054] After establishing the measurement coordinate system, you can measure the product by manually measuring points or by entering the coordinate values ​​of the measuring points to write an automatic measurement program. After completion, you can output a measurement report.

[0055] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A simple scanning and measuring composite bracket, comprising a base (1), the base (1) having a planar upper end surface, and a plurality of measuring bracket components on the upper end surface of the base (1); characterized in that: There are an even number of measuring bracket components; all measuring bracket components are arranged in pairs and symmetrically arranged on the upper end surface of the base (1); The measuring bracket component comprises a plurality of measuring bracket groups, and the measuring bracket groups are arranged at intervals; The upper end surface of the base (1) is a rectangular surface, and reference frustums are respectively arranged at the four rectangular corners of the upper end surface of the base (1); A plurality of laser marking points (3) are arranged around the reference frustum.

2. The simple scanning and measuring composite bracket according to claim 1, characterized in that: The upper end surface of the base (1) is provided with a center coordinate nameplate (4) for marking coordinate information of the reference truncated cone; There are four circle center coordinate nameplates (4), and the circle center coordinate nameplates (4) are arranged corresponding to the reference frustum.

3. The simple scanning and measuring composite bracket according to claim 1, characterized in that: The measuring bracket assembly includes a positioning seat assembly and a plurality of supporting seat assemblies; The positioning seat assembly comprises a columnar seat (501), the lower end of the columnar seat (501) is mounted on the upper end surface of the base (1), the upper end surface of the columnar seat (501) has a zero point and a positioning pin (502) is mounted in the middle of the zero point; The support seat assembly comprises a second columnar seat (601), the lower end of the second columnar seat (601) is mounted on the upper end surface of the base (1), and the upper end of the second columnar seat (601) is provided with a positioning column (602).

4. The simple scanning and measuring composite bracket according to claim 3, characterized in that: A countersunk hole is constructed at the upper end of the columnar seat 2 (601), a nut (603) is fixed at the opening of the countersunk hole, and the positioning column (602) and the positioning column (602) are inserted into the nut (603) and threadedly connected with the nut (603).

5. The simple scanning and measuring composite bracket according to claim 3, characterized in that: Installation angle codes (7) are respectively arranged on both sides of the columnar seat (501) and both sides of the positioning column (602); the side of the columnar seat (501), the side of the positioning column (602) and the installation angle code (7) are fixed by bolts; and the installation angle code (7) is fixed to the upper end surface of the base (1) by bolts.

6. The simple scanning and measuring composite bracket according to claim 5, characterized in that: A plurality of threaded holes are constructed on the upper end surface of the base (1), and the mounting angle code (7) is fixed to the threaded holes on the upper end surface of the base (1) by means of bolts.

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