CN202928486U - Detection device used to detect irregular structure geometric tolerance - Google Patents

Abstract

The utility model discloses a detection device used to detect irregular structure geometric tolerance comprising a bottom plate and a detection part. The detection part is constituted by a supporting block, a slide rail, and a detection block. According to the detection device, the supporting block is fixedly provided with the slide rail, and the detection block can slide along the sliding rail horizontally. At the same time, a detection surface of the detection block can be used to completely simulate the structural type surface to be detected. A working part of the detection surface can be used to provide a pass/stop structure according to the tolerance required by the structural type surface to be detected. When a through end of the detection block can pass through all of the detected structural type surfaces successfully, and can be stopped at the stop end, the detected structural type surfaces are qualified, otherwise are not qualified.

Description

A detection device for detecting shape and position tolerances of irregular structures

technical field

The utility model relates to the technical field of shape and position tolerance detection, in particular to a detection device which can be used for detecting the shape and position tolerance of irregular structural profiles.

Background technique

The detection device is a special detection equipment designed and manufactured to detect the external dimension, surface shape and other position status of the product. At the part production site, the shape, outline and hole size of the part can be detected through the detection device, so as to ensure the rapid judgment of the quality status of the part during production.

In the production process, some parts have irregular and small structures in local areas, and they have high requirements for the geometrical tolerance of the structural surface. When detecting the geometrical tolerances of such irregular structures, if the general However, there is a problem that it cannot be detected due to the small structure; the current conventional detection method for this structure is to use a special projector for detection, but the operation process of using a projector is complicated and the detection efficiency is low. , the input cost is relatively high, and many manufacturers do not have projectors, so they do not have universal practicability.

Utility model content

The technical problem to be solved by the utility model is to provide a detection device which is applicable to the detection of shape and position tolerances of irregular and small structures and requires high precision, and has a simple structure, convenient operation and high detection efficiency.

In order to solve the above-mentioned technical problems, the utility model adopts a detection device for detecting shape and position tolerances of irregular structures, including a bottom plate and a detection part, the detection part is composed of a support block, a slide rail and a detection block, and the detection Part is fixedly installed on the bottom plate through the support block, the slide rail is fixedly installed on the support block, and the detection block is matched and installed on the slide rail; the detection surface of the detection block is the same as the detected structure profile, and the detection The working part of the surface is a no-go structure, and the no-go structure is composed of a through end and a stop end.

There are multiple detection parts, which are respectively fixedly installed on the bottom plate.

The size of the open end is the profile size of the detected structure minus its tolerance size, and the size of the stop end is the profile size of the detected structure plus its tolerance size.

The slide rail (3) is a linear guide rail.

The beneficial effect that the utility model has:

1. The detection device has a simple structure and is convenient for detection, and can detect multiple parts at the same time by making multiple sets of detection devices, thereby greatly improving the detection efficiency.

2. Compared with using a special-purpose projector, the manufacturing cost of the detection device is lower, thereby reducing the cost invested in the detection link.

3. The detection device is simple and convenient to operate, and the method of judging whether the shape and position tolerance is qualified or not is simple and easy to understand, and has universal practicability.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the detection part of the utility model.

In the figure: 1. Detection part; 2. Support block; 3. Slide rail; 4. Detection block; 5. Bottom plate; .

Detailed ways

As shown in Figures 1 and 2, it is a detection device for detecting shape and position tolerances of irregular structures, including a base plate 5 and a detection part 1, wherein the detection part 1 is composed of a support block 2, a slide rail 3 and a detection block 4, The detection part 1 is fixedly installed on the bottom plate 5 through the support block 2, the slide rail 3 is fixedly installed on the support block 2, the detection block 4 can be provided with a card slot matching the slide rail 3, and the detection block 4 can be installed through the card slot On the slide rail 3, and slide along the slide rail 3 axially and horizontally; the detection surface 8 of the detection block 4 is the same as the detected structure profile, and the working part 9 of the detection surface 8 is a pass-stop structure, and the pass-stop structure It consists of a through end 6 and a stop end 7, wherein the size of the through end 6 is the size of the detected structural profile minus its tolerance size, and the size of the stop end 7 is the size of the detected structure profile plus its tolerance size.

The detection device is to fix a slide rail 3 on the support block 2, and the detection block 4 can slide horizontally along the slide rail 3. At the same time, the detection surface 8 of the detection block 4 completely simulates the structural profile to be detected, and the working part 9 of the detection block 4 According to the tolerance size required by the structural surface to be tested, a pass-through structure is made. The design of the through-stop structure of the detection block 4 in the detection device makes the detection principle of the whole device simple and easy to understand; The detection is performed to ensure that the detection surface 8 of the detection block 4 is the same as the detected structural profile.

According to the specific parts required to be detected, the detection device can set corresponding part positioning references on the bottom plate 5 of the detection device. Detection block 4, when the through end 6 of the detection block can pass through the detected structural profile smoothly, and when the stop end 7 can prevent the detection block 4 from passing, then the detection profile of the structure is qualified, otherwise it is unqualified, thus completing Inspection of structural inspection profile size and shape tolerance. If the on-off 6 of the detection block cannot pass through the detected structural profile, it means that the size of the detected structural profile is too small; The size of the structural profile is too large; therefore, while testing whether the structural profile is qualified, the reason for the unqualified test result can also be obtained to provide guidance and reference for subsequent production.

The detection device can not only detect the size tolerance of the structural profile, but also detect the positional tolerance of the structural profile. According to the position of the detection profile of the part, the detection device sets the installation reference of the part on the base plate 5 of the detection device. During detection, the detection part is fixedly installed on the base plate 5 of the detection device according to the installation reference. The profile just corresponds to the working part 9 of the detection block 4, that is, the detection of the position tolerance of the part detection profile is completed while the shape tolerance of the part is detected.

The matching accuracy of the detection block 4 and the slide rail 3 in the detection device has a decisive influence on the detection accuracy of the detection device, so to ensure the detection accuracy of the detection device, the coordination accuracy between the detection block 4 and the slide rail 3 is required to be 0.05 within mm. If the matching gap between the two is too large, the detection accuracy of the detection device cannot meet the requirements; if the detection block 4 and the slide rail 3 cooperate too tightly, the detection block will not slide smoothly, resulting in inconvenient operation. The slide rail 3 of the detection device can use a standard linear guide rail, install the detection block 4 on the slide rail 3, adjust the matching gap between the detection block 4 and the slide rail 3, and use a special inspection machine to detect the inspection tool The accuracy is checked, so that the matching accuracy between the detection block 4 and the slide rail 3 meets the detection accuracy requirements.

The detection part 1 in the detection device is taken as a whole, and multiple detection parts 1 can be installed on the bottom plate 5 of the detection device, so that when there are multiple structural profiles that need to be detected on the part at the same time, it can be completed at the same time through one installation. Detection of shape and position tolerances of multiple structural surfaces. the

Claims (4)

1. A detection device for detecting shape and position tolerances of irregular structures, including a bottom plate (5) and a detection part (1), characterized in that: the detection part (1) is composed of a support block (2), a slide rail ( 3) and the detection block (4), the detection part (1) is fixedly installed on the bottom plate (5) through the support block (2), and the slide rail (3) is fixedly installed on the support block (2). The detection block (4) is mounted on the slide rail (3); the detection surface (8) of the detection block (4) is the same as the structure surface to be detected, and the working part (9) of the detection surface (8) It is a no-go structure, and the no-go structure is composed of a through end (6) and a stop end (7). 2. The detection device according to claim 1, characterized in that there are multiple detection parts (1), which are fixedly installed on the bottom plate (5) respectively. 3. The detection device according to claim 1 or 2, characterized in that: the size of the through end (6) is the size of the detected structure minus its tolerance size, and the size of the stop end (7) is the measured Structural profile size plus its tolerance size. 4. The detection device according to claim 3, characterized in that: the slide rail (3) is a linear guide rail.

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