Three-coordinate measuring instrument

Abstract

The utility model belongs to the technical field of three-coordinate measurement, and discloses a three-coordinate measuring instrument, which comprises a three-coordinate measuring main body and two optical positioning pieces, the optical positioning pieces are connected with the three-coordinate measuring main body, the number of the optical positioning pieces is two, and the optical positioning pieces are respectively a first optical positioning piece and a second optical positioning piece. The light emitted by the first optical positioning piece is consistent with the X-axis moving path of the three-coordinate measuring main body, and the light emitted by the second optical positioning piece is consistent with the Z-axis moving path of the three-coordinate measuring main body. The light path of the first optical positioning piece can simulate the moving path of the probe in the X-axis direction, the light path of the second optical positioning piece can simulate the moving path of the probe in the Z-axis direction, and when a worker places a to-be-measured piece, the to-be-measured piece can be conveniently and rapidly placed according to the light guide of the two visible light beams. And the to-be-measured piece is adjusted to enable the adjacent side surfaces of the to-be-measured piece to be in a horizontal state with the two visible light beams, so that the to-be-measured piece can be quickly and accurately placed.

Description

Technical Field

[0001] The utility model relates to the technical field of three-coordinate measurement, in particular to a three-coordinate measuring instrument. Background Art

[0002] A three-dimensional coordinate measuring machine (CMM) is a modern measuring tool that combines inspection and statistical analysis. It is widely used in various industries, such as precision measurement of mold equipment, fixtures, auto mold parts, electronic and electrical structures, and so on. Currently, when using a CMM to measure a workpiece, the placement of the workpiece is mostly determined by visual inspection or by adjusting the position of the workpiece with a ruler. This ensures that the workpiece and the CMM's measurement track are in the correct position, avoiding interference between the measuring rod of the CMM's stylus and the workpiece during measurement, which could cause measurement errors. However, whether using visual inspection or a ruler, the inspection personnel must repeatedly adjust the placement of the workpiece and attempt multiple measurements to determine its placement. This results in the inspection personnel consuming a considerable amount of time and energy to determine the placement of the workpiece each time the CMM is used to measure the workpiece.

[0003] Therefore, a three-coordinate measuring instrument is urgently needed to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a three-coordinate measuring machine, which can solve the problem that every time a three-coordinate measuring machine is used to measure a workpiece, a large amount of time and energy is consumed by the inspection personnel to determine the placement position of the workpiece to be measured.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A three-coordinate measuring machine, comprising:

[0007] A three-coordinate measurement body and an optical positioning member, the optical positioning member is connected to the three-coordinate measurement body, and two optical positioning members are provided, namely a first optical positioning member and a second optical positioning member. The light emitted by the first optical positioning member is consistent with the X-axis movement path of the three-coordinate measurement body, and the light emitted by the second optical positioning member is consistent with the Z-axis movement path of the three-coordinate measurement body.

[0008] As an optimal technical solution for the three-coordinate measuring instrument, the optical positioning component includes a base, an optical emitter and a control switch. The optical emitter is fixed to the base via fasteners. The control switch is used to control the power on and off of the optical emitter. The base and the three-coordinate measuring body can be detachably connected.

[0009] As a preferred technical solution of the three-dimensional coordinate measuring machine, the base includes a magnet, and the magnet is fixed to the bottom surface of the base.

[0010] As a preferred technical solution of the three-coordinate measuring machine, the base includes an adhesive backing, and the adhesive backing is adhered and fixed to the bottom surface of the base.

[0011] As an optimal technical solution for the three-coordinate measuring instrument, the base is provided with a mounting groove, the optical emitter is placed in the mounting groove, the side wall of the mounting groove has a fixing hole, the fastener passes through the fixing hole and abuts against the optical emitter, and the fastener is threadedly connected to the fixing hole.

[0012] As a preferred technical solution of the three-coordinate measuring instrument, the fastener is provided with an external thread, the fixing hole is provided with an internal thread, and the external thread on the fastener and the internal thread are screwed together.

[0013] As a preferred technical solution of the three-coordinate measuring machine, the perpendicularity between the mounting groove and the bottom surface of the base is less than 0.02 mm.

[0014] As a preferred technical solution of the three-coordinate measuring machine, the first optical positioning member is connected to the auxiliary leg of the three-coordinate measuring body.

[0015] As a preferred technical solution of the three-coordinate measuring machine, the second optical positioning member is connected to the slide of the three-coordinate measuring body.

[0016] As a preferred technical solution for the three-coordinate measuring instrument, the light emitted by the optical positioning component is a linear visible light beam with a wavelength of 650nm±10nm and a diameter of 1mm-2mm.

[0017] The beneficial effects of the utility model are:

[0018] The utility model provides a three-coordinate measuring instrument, by arranging a first optical positioning member on the three-coordinate measuring body with a light emission path consistent with the X-axis movement path of the three-coordinate measuring body, and arranging a second optical positioning member with a light emission path consistent with the Z-axis movement path of the three-coordinate measuring body, wherein the light path of the first optical positioning member can simulate the movement path of the stylus of the three-coordinate measuring body in the X-axis direction to form an X-axis visible light beam, and the light path of the second optical positioning member can simulate the movement path of the stylus of the three-coordinate measuring body in the Z-axis direction to form a Z-axis visible light beam. When placing the workpiece to be measured, the staff only needs to According to the guidance of the X-axis visible light beam and the Z-axis visible light beam, the workpiece to be measured is adjusted so that its two adjacent side surfaces are kept horizontal with the X-axis visible light beam and the Z-axis visible light beam respectively. In this way, the problem of interference between the stylus rod of the stylus and the workpiece to be measured during the measurement of the workpiece by the stylus of the three-dimensional coordinate measuring body, resulting in misalignment of the workpiece to be measured and affecting the measurement effect of the workpiece to be measured, can be avoided. The placement position of the workpiece to be measured can be quickly located, which effectively solves the problem that the inspection personnel need to spend a lot of time and energy to determine the placement position of the workpiece to be measured every time the three-dimensional coordinate measuring machine is used to measure the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the three-coordinate measuring instrument provided by the utility model;

[0020] Figure 2 This is a structural diagram of the optical positioning component provided by the utility model;

[0021] Figure 3 This is a structural diagram of the base of the optical positioning component provided by the present invention;

[0022] Figure 4 It is a structural schematic diagram of a fastener in an optical positioning component provided by the utility model.

[0023] In the picture:

[0024] 100. Parts to be measured;

[0025] 1. Three-dimensional coordinate measurement body; 11. Auxiliary legs; 12. Slide;

[0026] 2. Optical positioning member; 2a. First optical positioning member; 2b. Second optical positioning member; 21. Base; 211. Mounting slot; 2111. Fixing hole; 22. Optical emitter; 23. Control switch; 24. Fastener. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0028] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0031] like Figure 1 and Figure 2 As shown in , this embodiment provides a three-coordinate measuring machine for measuring the dimensions of a workpiece 100 to be measured. The three-coordinate measuring machine includes a three-coordinate measuring body 1 and an optical positioning member 2. The optical positioning member 2 is connected to the three-coordinate measuring body 1. The optical positioning member 2 is provided with two, namely a first optical positioning member 2a and a second optical positioning member 2b. The light emitted by the first optical positioning member 2a is consistent with the X-axis movement path of the three-coordinate measuring body 1, and the light emitted by the second optical positioning member 2b is consistent with the Z-axis movement path of the three-coordinate measuring body 1.

[0032] In this embodiment, a first optical positioning member 2a whose light emission path is consistent with the X-axis movement path of the three-coordinate measurement body 1 is provided on the three-coordinate measurement body 1, and a second optical positioning member 2b whose light emission path is consistent with the Z-axis movement path of the three-coordinate measurement body 1 is provided, wherein the light path of the first optical positioning member 2a can simulate the movement path of the stylus of the three-coordinate measurement body 1 in the X-axis direction to form an X-axis visible light beam, and the light path of the second optical positioning member 2b can simulate the movement path of the stylus of the three-coordinate measurement body 1 in the Z-axis direction to form a Z-axis visible light beam. When placing the workpiece 100 to be measured, the staff only needs to adjust the position according to the X-axis visible light beam and the Z-axis visible light beam. Guided by the light of the Z-axis visible light beam, the workpiece 100 to be measured is adjusted so that its two adjacent side surfaces are respectively kept horizontal with the X-axis visible light beam and the Z-axis visible light beam. In this way, it is possible to avoid the problem that, during the process of the stylus of the three-dimensional coordinate measuring body 1 measuring the workpiece 100, the stylus rod of the stylus interferes with the workpiece 100 to be measured, causing the workpiece 100 to be misaligned and affecting the measurement effect of the workpiece 100 to be measured, thereby achieving rapid positioning of the placement position of the workpiece 100 to be measured, and effectively solving the problem that each time the three-dimensional coordinate measuring machine is used to measure the workpiece 100 to be measured, the inspection personnel need to spend a lot of time and energy to determine the placement position of the workpiece 100 to be measured.

[0033] Exemplarily, the optical positioning member 2 includes a base 21, an optical emitter 22, and a control switch 23. The optical emitter 22 is fixed to the base 21 via a fastener 24, ensuring the tightness of the assembly of the two. This ensures that the light emitted by the first optical positioning member 2a is consistent with the X-axis movement path of the stylus, and that the light emitted by the second optical positioning member 2b is consistent with the Z-axis movement path of the stylus. The control switch 23 is used to control the power on and off of the optical emitter 22. When the three-dimensional coordinate measuring machine needs to measure the workpiece 100 to be measured, the optical emitter 22 is powered on by the control switch 23. When the workpiece 100 to be measured is not required to be measured, the optical emitter 22 is powered off by the control switch 23. Preferably, the base 21 and the three-coordinate measuring body 1 can be detachably connected, so that the inspector can adjust the position of the first optical positioning component 2a according to the volume of the workpiece 100 to be measured, so that the height of the light emitted by the optical emitter 22 in the first optical positioning component 2a is adapted to the height of the workpiece 100 to be measured, which makes it easier for the inspector to determine the placement position of the workpiece 100 to be measured and improves the rationality of the design of the three-coordinate measuring instrument.

[0034] In one embodiment, the base 21 includes a magnet, which is fixedly attached to the bottom surface of the base 21. When installing the optical locator 2, the optical locator 2 can be attached to the three-dimensional coordinate measurement body 1 by magnetic attraction. When the height of the optical locator 2 needs to be adjusted according to the volume of the workpiece 100 to be measured, the inspector simply removes the optical locator 2 and magnetically attracts it to the required height position on the three-dimensional coordinate measurement body 1, allowing the inspector to quickly and effortlessly adjust the position of the optical locator 2.

[0035] In another embodiment, the base 21 includes adhesive backing, wherein the adhesive backing is adhered and fixed to the bottom surface of the base 21 , thereby also enabling a detachable connection between the base 21 and the three-coordinate measurement body 1 .

[0036] Regarding the assembly of the optical transmitter 22 and the base 21, for example, Figures 2 to 4 As shown in , a mounting groove 211 is provided on the base 21, and the optical emitter 22 is placed in the mounting groove 211. The mounting groove 211 can realize the assembly positioning of the optical emitter 22. A fixing hole 2111 is provided on the side wall of the mounting groove 211. The fastener 24 fixes the optical emitter 22 in the mounting groove 211 after passing through the fixing hole 2111. Specifically, the fastener 24 abuts against the optical emitter 22 after passing through the fixing hole 2111. At the same time, the fastener 24 is threadedly connected to the fixing hole 2111. In this way, the fastener 24 can lock the optical emitter 22, preventing the optical emitter 22 from moving in the mounting groove 211, affecting the path of the light emitted by the optical positioning component 2, and affecting the determination of the placement position of the workpiece 100 to be measured. Specifically, the fastener 24 is provided with an external thread, and the fixing hole 2111 is provided with an internal thread. When the fastener 24 passes through the fixing hole 2111, the external thread on the fastener 24 and the internal thread are screwed together to achieve the screw connection between the fastener 24 and the fixing hole 2111. In this embodiment, the fastener 24 can be a bolt or a stud.

[0037] In this embodiment, the perpendicularity between the mounting groove 211 and the bottom surface of the base 21 is less than 0.02 mm. Perpendicularity is a positional tolerance used to evaluate the perpendicularity between lines, planes, or between a line and a plane. Controlling the perpendicularity between the mounting groove 211 and the bottom surface of the base 21 to within 0.02 mm further ensures the consistency between the X-axis visible light beam emitted by the first optical positioning member 2a and the X-axis movement path of the stylus, and the consistency between the Z-axis visible light beam emitted by the second optical positioning member 2b and the Z-axis movement path of the stylus, thereby achieving accurate positioning of the measurement object 100.

[0038] In this embodiment, the first optical positioning member 2a is connected to the auxiliary leg 11 of the three-dimensional coordinate measuring body 1. The second optical positioning member 2b is connected to the slide 12 of the three-dimensional coordinate measuring body 1. When the three-dimensional coordinate measuring body 1 is working, the first optical positioning member 2a can move along with the movement of the auxiliary leg 11 of the three-dimensional coordinate measuring body 1, and the second optical positioning member 2b can move along with the movement of the slide 12 of the three-dimensional coordinate measuring body 1, further improving the rationality of the design of the three-dimensional coordinate measuring machine.

[0039] In this embodiment, the light emitted by the optical positioning component 2 is a linear visible light beam with a wavelength of 650nm±10nm and a diameter of 1mm-2mm. This makes it easier for the inspection personnel to observe the X-axis visible light path and the Z-axis visible light path, and to locate the placement position of the measured component 100 more quickly.

[0040] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A three-coordinate measuring instrument, characterized in that: include: A three-coordinate measurement body (1) and an optical positioning member (2), wherein the optical positioning member (2) is connected to the three-coordinate measurement body (1), and the optical positioning member (2) is provided with two, namely a first optical positioning member (2a) and a second optical positioning member (2b), wherein the light emitted by the first optical positioning member (2a) is consistent with the X-axis movement path of the three-coordinate measurement body (1), and the light emitted by the second optical positioning member (2b) is consistent with the Z-axis movement path of the three-coordinate measurement body (1).

2. The three-coordinate measuring machine according to claim 1, characterized in that: The optical positioning member (2) comprises a base (21), an optical emitter (22) and a control switch (23); the optical emitter (22) is fixed to the base (21) via a fastener (24); the control switch (23) is used to control the power on and off of the optical emitter (22); and the base (21) and the three-coordinate measurement body (1) are detachably connected.

3. The three-coordinate measuring machine according to claim 2, characterized in that: The base (21) comprises a magnet, and the magnet is fixed to the bottom surface of the base (21).

4. The three-coordinate measuring machine according to claim 2, characterized in that: The base (21) comprises adhesive backing, and the adhesive backing is adhered and fixed to the bottom surface of the base (21).

5. The three-coordinate measuring machine according to claim 2, characterized in that: The base (21) is provided with a mounting groove (211), the optical transmitter (22) is placed in the mounting groove (211), the side wall of the mounting groove (211) has a fixing hole (2111), the fastener (24) passes through the fixing hole (2111) and abuts against the optical transmitter (22), and the fastener (24) is threadedly connected to the fixing hole (2111).

6. The three-coordinate measuring machine according to claim 5, characterized in that: The fastener (24) is provided with an external thread, the fixing hole (2111) is provided with an internal thread, and the external thread on the fastener (24) and the internal thread are threadedly connected to each other.

7. The three-coordinate measuring machine according to claim 5, characterized in that: The verticality between the mounting groove (211) and the bottom surface of the base (21) is less than 0.02 mm.

8. The three-coordinate measuring machine according to any one of claims 1 to 7, characterized in that: The first optical positioning member (2a) is connected to the auxiliary leg (11) of the three-coordinate measurement body (1).

9. The three-coordinate measuring machine according to any one of claims 1 to 7, characterized in that: The second optical positioning member (2b) is connected to the slide (12) of the three-coordinate measurement body (1).

10. The three-coordinate measuring machine according to any one of claims 1 to 7, characterized in that: The light emitted by the optical positioning member (2) is a linear visible light beam with a wavelength of 650nm±10nm and a diameter of 1mm-2mm.

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