CN205428286U

CN205428286U - Practical teaching aid of " tolerance " course

Info

Publication number: CN205428286U
Application number: CN201520455866.1U
Authority: CN
Inventors: 苏彤
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-23
Filing date: 2015-06-23
Publication date: 2016-08-03
Anticipated expiration: 2025-06-23

Abstract

The utility model relates to a practical teaching aid of " tolerance " course: it is as illustrated in FIG. 1 to article one, the central line is upper and lower axial symmetry measurement plate: its left side center department be 90 jiaos, right side center and locates to be 270 jiaos, respectively have one 135 jiaos about the left side, the right side respectively has one 45 jiaos from top to bottom, as illustrated in FIG. 3, this symmetry is measured eight total planes and is constituteed four parallel plane of group: two sets of parallel plane, the positive back that upper and lower a set of parallel plane, the left and right sides are the symmetry respectively are a set of parallel plane, the through -hole that has three equidistance axis to be parallel to each other on the front, the position in this three hole uses a measurement central line to be upper and lower axial symmetry setting, there is the openly oblique decurrent hole of three hole axis of an axis perpendicular to the higher authority of measuring the piece. Compared with the prior art, the beneficial effects of the utility model are that: synthesize when measuring the piece use, simple structure, it is easy to manufacture, convenient to use, resources are saved, it can use to reach the student the utility model discloses measure 22 experimental method that know " tolerance ".

Description

" tolerance " course practicality teaching aid

Technical field:

This utility model relates to mechanical major " tolerance " course practicality teaching aid, and specifically one can measure the composite measurement part of 22 " tolerance " experimental projects.This utility model is used as rote teaching demonstrating model；Workpiece is measured in experiment；Can develop as measuring measurer, processing mold.

Background technology:

The most existing " tolerance " curriculum experiment measuring piece has following several: the first is mostly for revolving body measuring piece, the linear dimension such as diameter and width can be surveyed, measure circularity, cylindricity, axiality, Form and position error, the prototype gear parameter such as beat, measure uncomplete content face.The second is not to be revolving body measuring piece, but each experiment measuring piece measurement content is single, only measures site error, completes all experiments, and how very inconvenient measuring piece quantity is.

Summary of the invention:

This utility model purpose is to overcome prior art deficiency to provide one can measure: the size and shape of " tolerance " course, the composite measurement part of 22 " tolerance " experimental projects of site error, its simple in construction and measure the item are many, it is easy to process, easy to use.In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions: as it is shown in figure 1, be that upper axisymmetric measures plate with a centrage: be to be 270 ° of angles at 90 ° of angles, right center at its Left-side center；Left side is respectively arranged with 135 ° of angles up and down, and right side is respectively arranged with a 45° angle up and down；As it is shown on figure 3, this symmetrical measurement part has eight planes forms four groups of parallel planes: upper next group parallel plane, the left and right sides respectively two groups of parallel planes of symmetry, back side, front are one group of parallel plane；Having the through hole that three equidistant and axis is parallel to each other on front, the position in these three hole is to be that upper axisymmetric is arranged with measuring piece centrage；The above hole obliquely having an axis to be perpendicular to three axially bored lines in front of measuring piece.

Compared with prior art, the beneficial effects of the utility model are: when composite measurement part uses, simple in construction, manufacture easily, easy to use, economize on resources, and reach student and can understand 22 experimental techniques of " tolerance " with this utility model measuring piece.

Accompanying drawing illustrates:

Fig. 1 is this utility model front view；

Fig. 2 is this utility model top view；

Fig. 3 is this utility model axonometric chart.Wherein 1 be hole 1,2 be hole 2,3 be hole 3,4 be inclined hole.

Detailed description of the invention:

With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings:

1. can measure the item in Fig. 1 and Fig. 3: length, width, thickness, highly, the linear dimension such as the centre-to-centre spacing of the diameter in hole, Kong Yukong；

2. four kinds of angles in Fig. 1 can measure four kinds of measuring methods of omnipotent vernier angle scale respectively: 45 ° (0 ° of-50 ° of scope), 90 ° and 135 ° (50 ° of-140 ° of scopes), 195 ° (135 ° of+60 ° of angle gauge blocks) (140 ° of-230 ° of scopes), 270 ° of (230 ° of-320 ° of scopes) angles；

3. edge of a knife chi, angle square, height vernier calliper and dial gauge can be used to measure linearity, flatness, parallelism of a flat to a datum flat, face-to-face perpendicularity, face-to-face gradient, symmetry etc. such as eight planes in Fig. 3.

4. can be with the depth of parallelism of measured hole Yu axially bored line such as three holes in front in Fig. 3；Axially bored line to plane verticality, plane to axially bored line perpendicularity；The position degree of three equidistant holes；The hole 1 symmetry to hole 2.

This axially bored line can be measured to the gradient of plane, this axially bored line perpendicularity to three axially bored lines in front in hole 4 obliquely on measuring piece the most as shown in Figure 3.

Claims

1. " tolerance " course practicality teaching aid, it is characterised in that: it is upper and lower axisymmetric measuring piece with a centrage: be to be 270 ° of angles at 90 ° of angles, right center at its Left-side center；On left side, inferior horn is respectively 135 ° of angles, and on right side, inferior horn is respectively a 45° angle；This symmetrical measurement part has eight planes and forms four groups of parallel planes: upper next group parallel plane, the left and right sides respectively two groups of parallel planes of symmetry, back side, front are one group of parallel plane；Having the through hole that three equidistant and axis is parallel to each other on front, the position in these three hole is to be that upper axisymmetric is arranged with measuring piece centrage；The above hole obliquely having an axis to be perpendicular to three axially bored lines in front of measuring piece.