Precise plane and cambered surface measuring device

Abstract

The utility model provides a device for accurately measuring a plane and a cambered surface. The device comprises a dial indicator, a fixing plate and a supporting rod, wherein the dial indicator is fixed on the fixed plate; wherein supporting rods are symmetrically arranged at the two ends of the fixing plate; the head of the dial indicator is higher than the supporting rod. According to the utility model, the problem that the height difference of a plane or a cambered surface cannot be accurately measured due to manufacturing reasons is solved, time and labor are saved, the measurement precision is improved, and the precision can reach a micron level.

Description

Technical Field

[0001] The present invention belongs to the field of automotive machinery, and particularly relates to a precise measurement device for flat surfaces and arc surfaces. Background Art

[0002] For the height difference of the flat surface or arc surface of the existing mold, after applying red lead or blue lead on the surface and visually inspecting the height difference, the height difference cannot be accurately measured, which cannot meet the on-site repair requirements. Summary of the Invention

[0003] The present invention discloses a precise measurement device for flat surfaces and arc surfaces, which is a device capable of accurately measuring the height difference of the flat surface or arc surface of the mold, solves the situation that the height difference of the flat surface or arc surface cannot be accurately measured due to manufacturing reasons, saves time and effort, improves the measurement accuracy, and the accuracy can reach the micron level.

[0004] A precise measurement device for flat surfaces and arc surfaces includes a micrometer, a fixing plate, and a support rod; wherein the micrometer is fixed on the fixing plate; two support rods are symmetrically arranged at both ends of the fixing plate; the head of the micrometer is higher than the support rod.

[0005] Further, the micrometer is fastened to the fixing plate by a micrometer fixing bolt.

[0006] Further, the support rod includes an upper end portion and a lower end portion; the upper end portion is fitted and fixed in the fixing plate and the lower end portion extends out of the bottom of the fixing plate; the cross-section of the lower end portion is triangular; the smaller the cross-section of the lower end portion of this measuring tool, the higher the measurement accuracy.

[0007] Further, the height of the head of the micrometer is adjusted to 3 millimeters higher than the support rod.

[0008] When the utility model works:

[0009] 1. Tighten the micrometer fixing bolt, gently place this device at the position to be measured, zero the micrometer, and then gently drag this device on the flat surface or arc surface. At the convex part of the flat surface or arc surface, the pointer of the micrometer will turn to the right, and at the concave part, the pointer will turn to the left (one grid of the micrometer pointer rotation is 1 micron). During measurement, its value needs to be recorded for convenient subsequent repair.

[0010] 2. For the convex part, it needs to be polished using a pneumatic tool until the value measured by this device is 0. For the concave part, it needs to be welded and then polished and ground using a pneumatic tool until the value measured by this device is 0. After repair state: When using this device to measure all the positions to be repaired, the pointer of the micrometer is at 0 and there is no left-right jumping phenomenon.

[0011] Advantages of the present utility model: It saves time and effort and improves the measurement accuracy, which can reach the micron level. Description of the Drawings

[0012] Figure 1 Structural schematic diagram of the present utility model.

[0013] List of reference numerals:

[0014] 1 - dial indicator; 2 - fixing plate; 3 - support rod; 4 - dial indicator fixing bolt; 31 - upper end; 32 - lower end. Detailed Description of the Invention

[0015] The present invention will be further clarified below in conjunction with the drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0016] As Figure 1 shown, a precise measurement device for plane and arc surface in this embodiment includes a dial indicator 1, a fixing plate 2, and a support rod 3; the dial indicator 1 is fixed on the fixing plate 2; two support rods 3 are symmetrically arranged at both ends of the fixing plate 2; the head of the dial indicator 1 is 3 mm higher than the height of the support rod 3; the dial indicator 1 is fastened to the fixing plate 2 through a dial indicator fixing bolt 4.

[0017] The support rod 3 includes an upper end 31 and a lower end 32; the upper end 31 is fitted and fixed in the fixing plate 2 and the lower end 32 extends out of the bottom of the fixing plate; the cross-section of the lower end 32 is triangular.

[0018] In this embodiment, the dial indicator 1 is zeroed, and then this device is gently dragged on the plane or arc surface. Hold this device firmly with both hands, keep the support rod close to the mold surface, and move it at a constant speed. At the convex part of the plane or arc surface, the pointer of the dial indicator will turn to the right, and at the concave part, the pointer will turn to the left (one grid rotation of the dial indicator pointer is 1 micron). The measured value needs to be recorded during measurement for convenient repair later.

[0019] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A precise measurement device for flat and arc surfaces, characterized in that: It includes a dial indicator (1), a fixed plate (2), and a support rod (3); wherein the dial indicator (1) is fixed on the fixed plate (2); at both ends of the fixed plate (2), support rods (3) are symmetrically provided; the head of the dial indicator (1) is higher than the support rod (3).

2. The precise measurement device for plane and arc surface according to claim 1, wherein: Wherein the dial indicator (1) is fastened to the fixed plate (2) by a dial indicator fixing bolt (4).

3. The precise measurement device for plane and arc surface according to claim 1, characterized in that: The support rod (3) includes an upper end portion (31) and a lower end portion (32); wherein the upper end portion (31) is fitted and fixed inside the fixed plate (2) and the lower end portion (32) extends out of the bottom of the fixed plate; the cross-section of the lower end portion (32) is triangular.

4. The precise measurement device for plane and arc surface according to claim 1, characterized in that: The height of the head of the dial indicator (1) is adjusted to 3 millimeters higher than the support rod (3).

Images