Positioning cushion block for surveying and mapping of three-coordinate measuring instrument

Abstract

The utility model discloses a positioning cushion block for surveying and mapping of a three-coordinate measuring instrument, which relates to the technical field of auxiliary measuring equipment and comprises a base for placing a workpiece to be measured, a fixing hole is arranged on the base, and a clamping needle abutted against the workpiece to be measured is arranged on the base. The to-be-measured workpiece is placed on the base through the clamping needle, the base is installed on the marble platform of the measuring instrument through the fixing hole, accurate installation of the to-be-measured workpiece on the marble platform is achieved, the to-be-measured workpiece is prevented from making direct contact with the marble platform of the measuring instrument through the base, and abrasion between the to-be-measured workpiece and the marble platform is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement assistance, in particular to a positioning cushion block for surveying and mapping of a three-coordinate measuring instrument. Background Art

[0002] Before measuring the product, the coordinate measuring instrument needs to be calibrated with a ballbar. Then, the intersection of the center of the circular ring product and the marble plane is used as the coordinate origin. To confirm the coordinate system, the marble plane, spatial array, plane rotation, and origin need to be manually measured. Then the coordinate system, spatial array, plane rotation, and origin are automatically established. Repeated measurements are performed to accurately determine the coordinate system, but they also take up a lot of time. In order to ensure the accuracy of the measurement, the parts to be measured are generally placed on the working platform of the measuring instrument for measurement. The front and back sides of the parts need to be measured. After the front data of the parts is measured, the parts need to be manually turned over and the back of the parts need to be measured. However, after the manual turning, the position of the parts needs to be recalibrated. The calibration time often takes several minutes, and due to the difference in the proficiency of the operators, the calibration time will have a certain deviation.

[0003] For example, the publication number CN103344203B disclosed a three-coordinate measuring instrument six-degree-of-freedom fine-tuning work platform on November 18, 2015, characterized in that: it includes a workbench, the workbench is installed on the upper base, at least three upper pads are installed at the bottom of the upper base, the lower end of the upper pad is connected to the upper ball hinge connecting pad through an upper ball hinge, the upper ball hinge connecting pad is connected to the upper right-handed internal thread sleeve, the upper right-handed internal thread sleeve is sleeved on the outer cylindrical surface of the upper coarse adjustment right-handed screw, the upper coarse adjustment right-handed screw cavity is threadedly connected with the upper end of the fine-tuning screw, and the lower end of the fine-tuning screw is threadedly installed in the lower coarse adjustment left-handed screw cavity. When the above-disclosed work platform is tested, the positioning of the workpiece to be measured is inaccurate, resulting in inaccurate measurement results of the workpiece to be measured. Summary of the invention

[0004] The purpose of the utility model is to provide a positioning pad for three-coordinate measuring instruments with more accurate measurement results. The utility model installs the workpiece to be measured on the base through the clamping pin, and the base is installed on the platform of the measuring instrument through the fixing hole, so as to realize the lowered placement of the base and the workpiece to be measured on the platform of the measuring instrument, thereby ensuring that the detection result of the workpiece to be measured is more accurate.

[0005] To achieve the above purpose, the technical solution adopted by the utility model to solve its technical problem is: a positioning pad for surveying and mapping of a three-coordinate measuring instrument, including a base for placing a workpiece to be measured, the base is provided with a fixing hole, and the base is provided with a clamping pin that abuts against the workpiece to be measured.

[0006] As a further solution of the utility model, a placement platform is provided on the base, and the workpiece to be measured is placed on the placement platform.

[0007] As a further solution of the utility model, a positioning plate is provided on the base, and a positioning hole is provided on the positioning plate.

[0008] As a further solution of the utility model, a connecting groove is provided on the base, and the positioning plate is snap-connected with the connecting groove.

[0009] As a further solution of the utility model, the connecting groove is a U-shaped groove, and the positioning plate is provided with an extension plate that is clamped with the U-shaped groove.

[0010] As a further solution of the utility model, adjustment holes are provided on both sides of the connecting groove, and the adjustment holes are engaged with the card pins.

[0011] As a further solution of the utility model, the base is a circular plate, the connecting grooves are symmetrically arranged on the base, and the fixing hole is arranged at the center of the base.

[0012] As a further solution of the present invention, the positioning plate is a T-shaped plate.

[0013] The beneficial effects of the utility model are:

[0014] The workpiece to be measured is placed on the base through the clamping pin, and the base is installed on the marble platform of the measuring instrument through the fixing hole, so as to realize the accurate installation of the workpiece to be measured on the marble platform, and the base is used to prevent the workpiece to be measured from directly contacting the marble platform of the measuring instrument, thereby avoiding wear between the workpiece to be measured and the marble platform;

[0015] The base can be precisely positioned on the marble platform by the positioning plate and the positioning hole on the base, and the positioning plate is conveniently disassembled and assembled by the clamping connection between the positioning plate and the connecting groove on the base; adjustment holes are provided on both sides of the connecting groove, and the adjustment holes are clamped with the clamping pins. By clamping the clamping pins with the adjustment holes at different positions, the position of the clamping pins can be adjusted, so that the clamping pins can be used to locate workpieces of different sizes to be measured;

[0016] By determining a standard process to limit the user's operating steps to compensate for differences in proficiency, the position of the workpiece to be measured is limited by the base so that the position of the workpiece after turning over is consistent with the position before turning over, reducing the calibration time of the workpiece to be measured and saving time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of a positioning pad for surveying and mapping of a three-coordinate measuring instrument.

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of a positioning pad for three-dimensional coordinate measuring instrument connected to a workpiece to be measured of another size.

[0019] Figure 3 for Figure 2 Top view of the .

[0020] In the attached drawings: 1-base, 2-placing platform, 3-connecting slot, 4-fixing hole, 5-adjusting hole, 6-workpiece to be measured, 7-positioning plate, 8-positioning hole, 9-pin. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0023] like Figure 1 As shown, the positioning pad for surveying and mapping of a three-coordinate measuring instrument comprises a base 1 for placing a workpiece 6 to be measured, the base 1 is provided with a fixing hole 4, a clamping column engaged with the fixing hole 4 is provided on the marble platform of the measuring instrument, and a clamping pin 9 abutting against the workpiece 6 to be measured is provided on the base 1, and the workpiece 6 to be measured is fixed on the base 1 by the clamping pin 9.

[0024] When in use, the fixing hole 4 on the base 1 is connected to the clamping column on the marble platform of the measuring instrument to achieve a stable connection of the base 1, and the workpiece 6 to be measured is connected to the clamping pin 9 on the base 1 to achieve precise positioning of the workpiece 6 to be measured on the base 1. The base 1 prevents the workpiece 6 to be measured from directly contacting the marble platform of the measuring instrument, thereby preventing wear between the workpiece 6 to be measured and the marble platform.

[0025] Specifically, refer to Figure 1 A placing platform 2 is provided on the base 1, and the workpiece 6 to be measured is placed on the placing platform 2. The contact friction between the base 1 and the workpiece 6 to be measured is increased by the placing platform 2, so as to achieve stable placement of the workpiece 6 to be measured. In this embodiment, the placing platform 2 is a rectangular protrusion.

[0026] A positioning plate 7 is provided on the base 1, and a positioning hole 8 is provided on the positioning plate 7. By inserting the card pin 9 into the interior of the positioning hole 8 and contacting it with the marble surface, the position of the positioning plate 7 is fixed, so that the position of the base 1 can be fixed. In this embodiment, two positioning holes 8 are provided, and the two positioning holes 8 are symmetrically arranged on the positioning plate 7.

[0027] The base 1 is provided with a connecting groove 3 , and the positioning plate 7 is snap-fitted with the connecting groove 3 , so that the connection between the positioning plate 7 and the base 1 is achieved through the connecting groove 3 .

[0028] Specifically, the connecting groove 3 is a U-shaped groove, and the positioning plate 7 is provided with an extension plate engaged with the U-shaped groove. The extension plate on the positioning plate 7 is inserted into the U-shaped groove, so that the positioning plate 7 and the base 1 can be easily disassembled and assembled.

[0029] Adjustment holes 5 are provided on both sides of the connecting groove 3, and the adjustment holes 5 are engaged with the card pins 9. By engaging the card pins 5 with the adjustment holes 5 at different positions, it is convenient to adjust the position of the card pins 9, so that the card pins 9 can position the workpieces 6 to be measured of different sizes. In this embodiment, two groups of adjustment holes 5 are symmetrically installed at the positions on the left and right sides of the U-shaped groove, and each group of adjustment holes 5 includes four adjustment holes 5. The adjustment holes 5 of each group are arranged on the same straight line and are symmetrical to each other. Figure 1 and 2 There are two clamping needles 9 , which are symmetrically arranged and abut against the inner wall or outer wall of the workpiece 6 to be measured.

[0030] The base 1 is a circular plate, so it is compatible with the annular workpiece 6 to be measured. The connecting grooves 3 are symmetrically arranged on the base 1, so that it is convenient for the positioning plate 7 to position the base 1 at different positions. In this embodiment, four connecting grooves 3 are symmetrically arranged on the base 1, and the fixing hole 4 is arranged at the center of the base 1 to ensure the precise placement of the base 1.

[0031] The positioning plate 7 is a T-shaped plate, so as to be precisely connected with the connecting groove 3. The middle position of the T-shaped plate is an extension plate, and the ends of the extension plate are provided with rounded corners.

[0032] In summary, the user places the base 1 on the workbench of the measuring instrument, fixes the position of the base 1 through the fixing hole 4 to prevent the base 1 from being offset, and then places the workpiece 6 to be measured on the upper end of the base 1, and supports the workpiece 6 to be measured through the placement platform 2. According to the size of the workpiece 6 to be measured, the position of the clamping pin 9 is adjusted so that the edge position of the workpiece 6 to be measured contacts with the two clamping pins 9. At this time, measurement is performed through the measuring instrument. After the front measurement is completed, the workpiece 6 to be measured is turned over, and the above steps are repeated to complete the back measurement of the workpiece 6 to be measured.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning pad for three-coordinate measuring instrument surveying and mapping, characterized in that: The invention comprises a base (1) for placing a workpiece (6) to be measured, the base (1) being provided with a fixing hole (4), the base (1) being provided with a clamping pin (9) abutting against the workpiece (6) to be measured, the base (1) being provided with a positioning plate (7), and the positioning plate (7) being provided with a positioning hole (8).

2. The positioning pad for surveying and mapping of a three-coordinate measuring instrument according to claim 1, characterized in that: The base (1) is provided with a placement platform (2), and the workpiece (6) to be measured is placed on the placement platform (2).

3. The positioning pad for surveying and mapping of a three-coordinate measuring instrument according to claim 2, characterized in that: The base (1) is provided with a connecting groove (3), and the positioning plate (7) is snap-connected with the connecting groove (3).

4. The positioning pad for surveying and mapping of a three-coordinate measuring instrument according to claim 3, characterized in that: The connecting groove (3) is a U-shaped groove, and the positioning plate (7) is provided with an extension plate that is clamped with the U-shaped groove.

5. The positioning pad for surveying and mapping of a three-coordinate measuring instrument according to claim 4, characterized in that: Adjustment holes (5) are provided on both sides of the connection groove (3), and the adjustment holes (5) are engaged with the locking pins (9).

6. The positioning pad for surveying and mapping of a three-coordinate measuring instrument according to any one of claims 3 to 5, characterized in that: The base (1) is a circular plate, the connection grooves (3) are symmetrically arranged on the base (1), and the fixing hole (4) is arranged at the center of the base (1).

7. The positioning pad for surveying and mapping of a three-coordinate measuring instrument according to claim 6, characterized in that: The positioning plate (7) is a T-shaped plate.

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