Bow-shaped measuring tool for measuring cylinder diameter of engine

Abstract

The utility model discloses a bow-shaped measuring tool for measuring the cylinder diameter of an engine, one end part of a bow-shaped main body is provided with a micrometer, the other end part of the bow-shaped main body is provided with a supporting leg, the outer contour of the bow-shaped main body is in an arc shape similar to the inner cylinder wall, and the micrometer is coaxial with the axial lead of the supporting leg. The measuring tool main body is designed to be in an arch shape similar to the shape of the inner cylinder wall, so that the purpose of accurately measuring the inner diameter of the cylinder wall under the condition that the bore rod is not removed is achieved.

Description

Technical Field

[0001] The utility model relates to the field of ship engine manufacturing measurement, in particular to a bow-shaped measuring tool for measuring the cylinder diameter of an engine. Background Art

[0002] During the machining of the inner hole of the cylinder liner of a marine diesel engine, the process data cannot usually be directly measured. Usually, the boring bar needs to be removed and the measuring tool needs to be put into the bore to measure the inner hole diameter. The disassembly and assembly of the boring bar takes a lot of time, and the change of the matching part status during the machining process will affect the machining accuracy.

[0003] To this end, the applicant applied for a "C-type measuring tool for measuring engine cylinder diameter" (Chinese patent application number 202322915491X) to achieve inner diameter measurement without removing the bore rod. However, since the rod body of the tool is adjustable, it is mostly suitable for dimensional measurement in the rough machining state. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a bow-shaped measuring tool for measuring the cylinder diameter of an engine, so as to achieve the measurement of the inner diameter of the cylinder in the finishing process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A bow-shaped measuring tool for measuring the cylinder diameter of an engine has a micrometer at one end of the bow-shaped body and a supporting foot at the other end. The outer contour of the bow-shaped body is an arc shape similar to the inner cylinder wall, and the micrometer is coaxial with the axis of the supporting foot.

[0007] In a preferred embodiment of the present utility model, the micrometer is fixed to the ruler end fixing component, the supporting foot is fixed to the foot end fixing component, and the fasteners connect the two ends of the bow-shaped body.

[0008] In a preferred embodiment of the present invention, the supporting foot includes a frustum arranged on the supporting foot, the frustum fits tightly to the upper side of the foot-end fixing component and divides the supporting foot into an upper rod body and a lower rod body, the lower rod body passes through the foot-end fixing component and is engaged and fixed with a nut on the lower side of the foot-end fixing component.

[0009] In a preferred embodiment of the present utility model, a convex hump is provided at the end of the upper rod body, and the material of the convex hump is wear-resistant hard alloy.

[0010] In a preferred embodiment of the utility model, the end of the micrometer is provided with a screw rod extending upward, and the ruler end fixing component is provided with a through hole and a flat groove, the axial direction of the through hole is perpendicular to the axial direction of the flat groove, and a nut is provided in the flat groove, so that the screw rod engages with the nut to achieve fixation when passing through the through hole.

[0011] In a preferred embodiment of the present invention, the flat groove is located on a side close to the micrometer.

[0012] In a preferred embodiment of the present invention, the arched body is further provided with holes.

[0013] In a preferred embodiment of the present invention, the bow-shaped body is made of aluminum alloy.

[0014] In a preferred embodiment of the present invention, the ruler-end fixing component and the foot-end fixing component are made of stainless steel.

[0015] The beneficial effects of the utility model are:

[0016] The bow-shaped measuring tool for measuring the cylinder diameter of an engine provided by the utility model realizes the purpose of accurately measuring the inner diameter of the cylinder wall without removing the bore rod by designing the measuring tool body into a bow shape similar to the shape of the inner cylinder wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0018] Figure 1 It is an overall schematic diagram of the utility model.

[0019] Figure 2 This is a partial enlarged view of the supporting foot.

[0020] Figure 3 yes Figure 2 perspective view.

[0021] Figure 4 This is a partial enlarged view of the micrometer.

[0022] Figure 5 yes Figure 4 perspective view. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. The above description is simplified for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0024] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items.

[0025] In the specification, when an element is said to be "on", "fixed" to, "connected" to, "engaged" to, etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or there may be intervening elements. In the specification, when a feature is arranged "adjacent" to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0026] The following will describe exemplary embodiments of the present application with reference to the accompanying drawings. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all drawings, the same reference numerals represent the same or functionally identical elements.

[0027] Figure 1 The overall structure of the measuring tool is shown, which is composed of a curved arched body 10 and a micrometer 30 and a support foot 40 arranged at both ends of the arched body 10. The curved arched body 10 allows the measuring tool to avoid the bore rod and be placed directly into the cylinder body, so the outer contour 12 is set to be similar to the shape of the cylinder wall, so that it can be arranged between the bore rod and the cylinder wall.

[0028] Combined with reference Figure 2 and Figure 3The support foot 40 is arranged on one end of the arch body 10 through the foot end fixing component 50. The support foot 40 is provided with a truncated cone 43 which divides it into an upper rod body 42 and a lower rod body 44. The lower rod body 44 is inserted into the foot end fixing component 50, and the external thread at the end thereof is engaged with a nut 52 arranged on the lower side of the foot end fixing component 50. The truncated cone 43 is closely attached to the upper side of the foot end fixing component 50 and cooperates with the nut 52 to fix the support foot 40. A convex bump 41 is also provided at the top of the upper rod body 42, and the convex bump 41 is made of wear-resistant alloy material to improve the durability of the support foot 40.

[0029] Combined with reference Figure 4 and Figure 5 , a screw rod 31 extending upward is arranged at the top of the micrometer 30. A through hole 21 is provided in the vertical direction on the ruler end fixing component 20, and a flat groove 22 is provided in the horizontal direction. The horizontal axis of the flat groove 22 is perpendicular to the central axis of the through hole 21. By setting a nut 23 in the flat groove 22, the screw rod 31 is engaged with the nut 23 when passing through the through hole 21. The purpose of setting the flat groove 22 is that, considering that the connection strength between the micrometer 30 and the screw rod 31 is relatively weak, it is necessary to set the fixing point of the screw rod 31 and the ruler end fixing component 20 as close to the end of the micrometer 30 as possible.

[0030] The foot-end fixing part 50 and the ruler-end fixing part 20 are both connected to the end of the arched body 10 using a similar keyway structure. Slots 51 and 24 are provided on the foot-end fixing part 50 and the ruler-end fixing part 20, and correspondingly, convex keys 13 and 14 are provided on the end of the arched body 10. After the grooves 51 and 24 and the convex keys 13 and 14 matching in shape are engaged, fasteners are applied laterally to achieve fixation.

[0031] In one embodiment, a plurality of holes 11 are formed on the arched body 10 to reduce the weight and cost of the measuring tool.

[0032] In one embodiment, the bow-shaped body 10 is made of aluminum alloy, preferably 6061 aviation aluminum, to further achieve lightweight.

[0033] In one embodiment, the foot-end fixing component 50 and the ruler-end fixing component 20 are both made of stainless steel, preferably 304 stainless steel.

[0034] When using this measuring tool, first return the micrometer 30 to zero, then put it into the inner cylinder. First swing horizontally to get the maximum value, then swing vertically (perpendicular to the first swing direction) to get the minimum value, that is, the inner cylinder diameter value is obtained.

Claims

1. A bow-shaped measuring tool for measuring the cylinder diameter of an engine, characterized in that: A micrometer is provided at one end of the arched body, and a support foot is provided at the other end, the outer contour of the arched body is an arc shape similar to the inner cylinder wall, and the micrometer is coaxial with the axis of the support foot; The micrometer is fixed to the ruler end fixing component, the supporting foot is fixed to the foot end fixing component, and the fasteners connect the two ends of the bow-shaped body; The end of the micrometer is provided with a screw rod extending upward, and the ruler end fixing component is provided with a through hole and a flat groove. The axial direction of the through hole is perpendicular to the axial direction of the flat groove. A nut is provided in the flat groove so that the screw rod engages with the nut to be fixed when passing through the through hole.

2. The bow-shaped measuring tool for measuring the cylinder diameter of an engine according to claim 1, characterized in that: The supporting foot includes a frustum arranged on the supporting foot, the frustum fits tightly to the upper side of the foot-end fixing component and divides the supporting foot into an upper rod body and a lower rod body, the lower rod body passes through the foot-end fixing component and is engaged and fixed with a nut on the lower side of the foot-end fixing component.

3. The bow-shaped measuring tool for measuring the cylinder diameter of an engine as claimed in claim 2, characterized in that: A convex bump is arranged at the end of the upper rod body, and the material of the convex bump is wear-resistant hard alloy.

4. The bow-shaped measuring tool for measuring the cylinder diameter of an engine according to claim 1, characterized in that: The flat groove is located at a side close to the micrometer.

5. The bow-shaped measuring tool for measuring the cylinder diameter of an engine according to any one of claims 1 to 4, characterized in that: The bow-shaped main body is also provided with hollow holes.

6. The bow-shaped measuring tool for measuring the cylinder diameter of an engine as claimed in claim 5, characterized in that: The material of the bow-shaped main body is aluminum alloy.

7. The bow-shaped measuring tool for measuring the cylinder diameter of an engine as claimed in claim 5, characterized in that: The ruler end fixing component and the foot end fixing component are made of stainless steel.

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