Portable three-coordinate measuring clamp

Abstract

The utility model belongs to the technical field of part clamps, and relates to a portable three-coordinate measuring clamp. Comprising an end head clamping device and a tail end clamping device, the end head clamping device and the tail end clamping device are used for clamping and fixing of workpiece coordinate metering, the end head clamping device comprises an end head clamping base, a pressing block, a pressing bolt and a handle bolt, and the end head clamping base and the pressing block are fixedly connected through the pressing bolt. The pressing block is of a U-shaped structure, the end clamping base and the pressing block are connected in a fork lug mode, a gap between fork lugs is adjusted through a handle bolt, one end of a flap sliding rail is fixed, the tail end clamping device is provided with a surface attached to the profile of the flap sliding rail, and a flap sliding rail end check block is arranged in the middle of the tail end clamping device. And the other end of the flap slide rail is fixed. And the clamping device can be folded and unfolded only by rotating the compression bolt forwards or reversely, so that quick loading and unloading of batch products are realized, and alignment is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts fixtures and relates to a convenient three-coordinate measuring fixture. Background Art

[0002] During the three-dimensional measurement process for aircraft flap rails, it's necessary to inspect key dimensional characteristics, including the symmetry of the webs relative to the lower edge strips, web flatness, symmetry of the tabs relative to the lower edge strips, lower edge strip flatness, and the flatness of the 200mm side surface at the end of the lower edge strip. The existing three-dimensional measurement process lacks a dedicated clamping device, and measurement is performed by repeatedly flipping the rail over after alignment using one side surface and a 2-Φ12H7 hole as a reference. This measurement method requires frequent datum determination when measuring the same part or part with the same drawing number, resulting in significant cumulative errors in the measurement results and affecting the efficiency of three-dimensional measurement. Utility Model Content

[0003] Purpose of the utility model

[0004] The utility model aims to solve the problem of low efficiency in three-coordinate measurement of important characteristic dimensions of a flap slide rail.

[0005] Technical Solution

[0006] A portable three-coordinate measuring fixture comprises an end clamping device and a tail clamping device, the end clamping device and the tail clamping device are used for clamping and fixing workpiece coordinate measurement, the end clamping device comprises an end clamping base 1, a clamping block 2, a clamping bolt 3, and a handle latch 4, the end clamping base 1 and the clamping block 2 are fixedly connected by the clamping bolt 3, the clamping block 2 is a U-shaped structure, the end clamping base 1 and the clamping block 2 are in the form of fork ears, and the handle latch 4 is used to adjust the gap between the fork ears to fix one end of the flap slide rail, the tail clamping device is provided with a surface that fits the flap slide rail profile, and a flap slide rail end stop is provided in the middle to fix the other end of the flap slide rail.

[0007] Furthermore, both the end clamping device and the tail clamping device are provided with waist-shaped holes, and the waist-shaped holes are used to cooperate with the threaded holes on the three-coordinate measuring platform and are fixed by bolts.

[0008] Furthermore, the surface of the end clamping base 1 that contacts the flap slide rail has a profile that fits the outer shape of the flap slide rail.

[0009] Furthermore, the pressing block 2 is made of metal material.

[0010] Furthermore, both the end clamping base 1 and the tail clamping device are marked with part position reference scales to facilitate positioning of parts of the same type with different sizes.

[0011] Furthermore, the bottom surfaces of the end clamping device and the tail clamping device should be located on the same plane to ensure measurement accuracy and avoid affecting measurement accuracy.

[0012] Furthermore, the end clamping device and the tail clamping device should be located on the same straight line to ensure measurement accuracy and avoid affecting measurement accuracy.

[0013] The beneficial effects of this application are:

[0014] This method uses a portable special three-dimensional coordinate measuring fixture to set a group of clamping devices at the end and the end, so that the clamping device can be closed and opened by simply rotating the clamping bolt forward or backward to clamp or loosen the slide rail, meeting more measurement needs of the three-dimensional coordinate measuring machine, and realizing the rapid loading and unloading of batch products without the need for alignment, and directly running the inspection program for measurement. It has low cost, simple tools, simplified operation, easy use and high measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the end clamping device of the utility model.

[0016] Among them: 1-end clamping base, 2-clamping block, 3-clamping bolt, 4-handle pin.

[0017] Figure 2 It is a structural schematic diagram of the tail end clamping device of the utility model.

[0018] Among them: 5- tail end clamping base.

[0019] Figure 3 It is a structural diagram of the clamping parts of the utility model. DETAILED DESCRIPTION

[0020] The present invention is further described below with reference to the following embodiments. The following are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Combined with attachment Figure 1 、 2 3. Provide a method for detecting the characteristic dimensions of a part using a portable special three-dimensional coordinate measuring fixture, wherein the clamping equipment includes: 1-end clamping base, 2-clamping block, 3-clamping bolt, 4-handle latch, 5-tail clamping base;

[0022] In order to solve the above-mentioned technical problems, the present invention provides a portable three-coordinate measuring fixture, which proposes the following solution: it comprises an end clamping device and a tail clamping device. The end clamping device is composed of an end clamping base, a clamping block, a clamping bolt, and a handle latch. The end clamping base can be fixed to the work platform of the three-coordinate measuring machine using bolts. The clamping block can be hinged to the end clamping base using a handle latch. A bolt hole is provided at the tail end of the clamping block, and the clamping bolt can be used to adjust the angle between the clamping block and the end clamping base to clamp and fix parts. The tail clamping device is composed of the tail clamping base, which is arranged opposite to the end clamping base.

[0023] Furthermore, waist-shaped holes are provided in the middle of the end clamping base and the tail clamping base for connection and fixation with the working platform of the three-coordinate measuring machine.

[0024] Furthermore, the end clamping base and the tail clamping base supporting the slide rail are modeled according to the three-dimensional coordinate system fitting the inner arc surface of the lower edge strip of the part, so as to fit the inner arc surface of the slide rail and play a fixing role.

[0025] Furthermore, the clamping slide rail portion of the pressing block is modeled according to a three-dimensional coordinate system fitting the outer arc surface of the lower edge strip of the part, so as to fit the outer arc surface of the slide rail and play a fixing role.

[0026] Furthermore, the end clamping base and the tail clamping base are marked with part position reference scales to facilitate positioning of parts of the same type with different sizes.

[0027] Use of this device:

[0028] Install the end clamping base and the tail clamping base onto the three-coordinate measuring machine platform, and use bolts to fix them to the bolt holes set on the platform through the waist-shaped holes set on the base, so that a set of clamping devices are in the same straight line in space; while keeping the clamping devices in the same straight line, place the two ends of the part on the head clamping base and the tail clamping base through the scale; use a clamping block to clamp the part, and the clamping block presses along the outer arc surface of the lower edge of the part, and is hinged to the base with a handle pin through the center of the end clamping base. The base supports the inner arc surface of the lower edge of the part, so that the inner and outer arc surfaces of the part fit tightly with the clamping device; the clamping device keeps the part in a clamped state, and inserts a clamping screw into the bolt hole at the rear of the clamping block to support the rear of the base and clamp the part to a stable and measurable state; use a three-coordinate measuring machine and a three-dimensional digital model for alignment measurement, and use the part ear piece 2-Φ12H7 refined hole and the lower edge plane as a reference to detect various important characteristic dimensions.

[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as the general understanding of those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with that in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such here. The specific embodiments described above further explain the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable three-coordinate measuring fixture, characterized in that: The clamping device includes an end clamping device and a tail clamping device, which are used for clamping and fixing workpiece coordinate measurement. The end clamping device includes an end clamping base, a clamping block, a clamping bolt, and a handle pin. The end clamping base and the clamping block are fixedly connected by a clamping bolt. The clamping block is a U-shaped structure. The end clamping base and the clamping block are in the form of fork ears, and the handle pin is used to adjust the gap between the fork ears to fix one end of the flap slide rail. The tail clamping device is provided with a surface that fits the profile of the flap slide rail, and a flap slide rail end stop is provided in the middle to fix the other end of the flap slide rail.

2. The clamp according to claim 1, wherein The end clamping device and the tail clamping device are both provided with waist-shaped holes, and the waist-shaped holes are used to cooperate with the threaded holes on the three-coordinate measuring platform and are fixed by bolts.

3. The clamp according to claim 1, wherein The surface of the end head clamping base that contacts the flap slide rail has a profile that fits the outer shape of the flap slide rail.

4. The clamp according to claim 3, wherein The pressing block is made of metal material.

5. The clamp according to claim 4, wherein: The end clamping base and the tail clamping device are both marked with part position reference scales to facilitate the positioning of parts of the same type with different sizes.

6. The clamp according to claim 5, wherein: The bottom surfaces of the end clamping device and the tail clamping device should be located on the same plane.

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