CN103303039A

CN103303039A - Detachable multifunctional teaching aid

Info

Publication number: CN103303039A
Application number: CN2013102674362A
Authority: CN
Inventors: 石美青; 马书燮; 刘丽; 曹玉升
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-30
Filing date: 2013-06-30
Publication date: 2013-09-18

Abstract

A detachable multifunctional teaching aid comprises a measurement rod, a dial scale and an operating handle, wherein the measurement rod is connected with the dial scale and the operating handle. The detachable multifunctional teaching aid is simple in structure and convenient to use and carry, is demountable, and has multiple functions and strong practicability, therefore, the teaching aid can be used for not only teaching but also industrial design and measurement.

Description

A kind of removable Multifunctional teaching aid

Technical field

The present invention relates to a kind of teaching aid, the teaching aid in the inside and outside footpath of measurement that especially a kind of machining center pipe processing practice is used.

Background technology

Often must measure internal diameter or external diameter when present lathe, machining center processing pipe, measuring appliance commonly used has inside and outside footpath slide calliper rule, slide measure etc., inside and outside footpath structure of calipers is simple, but need just can obtain the numerical value of surveying by ruler, slide measure is reading directly, the high but complex structure of precision, and the high function of cost is few etc.

Summary of the invention

The objective of the invention is: a kind of removable Multifunctional teaching aid is provided, can overcomes the deficiency in the background technology, can practical function many, cost is low, detachable, easy to carry, practical.

Realization the technical solution used in the present invention is: it is comprised of measuring stick, dial and lever, and dial is connected with measuring stick, and lever is connected with measuring stick.

Inside and outside footpath for the energy measuring workpieces, increase measurement function, improve certainty of measurement, measuring stick is set to that shape is identical, two of equal in length, half of every length is straight section, and another section is segmental arc, and the outer end of straight section is globular model and circular hole is arranged, there is the groove that is magnetic between cone point, straight section and the segmental arc outer end of segmental arc, and the center of circle of straight section outer end circular hole overlaps with the straight section medial surface with the line segment of being connected the point connection; And dial is arc, and its thickness and magnetic groove depth are equal, and its width and magnetic well width are equal, and its front and back has graduation mark, and they are: length, angle or radian, dial also are magnetic and the magnetic groove is socketed slidably; Lever is comprised of cylindrical bar, two semicircular arc clamping plate and cylinder barrel shaped magnet with circular hole, two semicircular arc clamping plate Parallel Symmetric circular holes are relative, warp beam is connected on the cylindrical bar, the side that two clamping plate are relative is connecting respectively cylinder barrel shaped magnet, the center of circle of circular hole is relative on the axle center of cylinder barrel shaped magnet and two clamping plate, pointer is arranged in the circular hole, pointer tip points to the center of circle of circular hole on the clamping plate, cylinder barrel shaped magnet inserts in the circular hole of measuring stick straight section outer end round end section, under two semicircular arc clamping plate clampings, two measuring sticks are hinged to one.

The invention has the beneficial effects as follows: but internal diameter, external diameter, length, angle or radian simple and reasonable, easy to use, the many measuring workpieces of function, cost is low, detachable, easy to carry, the measurement equipment of commonly using when being the lathe processing work, Multifunctional teaching aid when also being Students ' Learning, practical.

Description of drawings

Accompanying drawing 1 is external structure schematic diagram of the present invention;

Accompanying drawing 2 is measuring stick 1 structural representations in the accompanying drawing 1;

Accompanying drawing 3 is structural representations of the lever 3 pulled down from accompanying drawing 1;

Accompanying drawing 4 is top views of accompanying drawing 3;

Accompanying drawing 5 is side views of accompanying drawing 3;

Accompanying drawing 6 is schematic diagrames of measuring the member external diameter.

The specific embodiment

The present invention is shown in accompanying

drawing

1,2,3, and this teaching aid is comprised of measuring stick 1, dial 2 and lever 3, and dial 2 is connected with measuring stick 1, and lever 3 is connected with measuring stick 1.Internal diameter, external diameter for the energy measuring workpieces, increase measurement function, improve certainty of measurement, with measuring stick 1 be set to that shape is identical, two of equal in length, half of every length is straight section 11, another section is segmental arc 12, the outer end of straight section is round end 111 shapes and circular hole 112 is arranged, there is the groove 13 that is magnetic between cone point 121, straight section and the segmental arc outer end of segmental arc, and the center of circle of straight section outer end circular hole 112 overlaps (shown in accompanying drawing 1,2,6) with the line segment of being connected point 121 connections with straight section 11 medial surfaces 110; And dial 2 is arc, its thickness and 13 deep equalities of magnetic groove, its width and magnetic groove 13 width are equal, and its front and back has graduation mark, they are: length graduation mark 21, angle index line 22, dial 2 also are magnetic and magnetic groove 13 is socketed slidably (shown in accompanying drawing 1,6); Lever 3 is by cylindrical bar 31, two semicircular arc clamping plate 32 and cylinder barrel shaped magnet 33 with circular hole 321 form, two semicircular arc clamping plate 32 Parallel Symmetric circular holes 321 are relative, warp beam 34 is connected on the cylindrical bar 31, two clamping plate, 32 relative sides are connecting respectively cylinder barrel shaped magnet 33, the center of circle of circular hole 321 is relative on the axle center of cylinder barrel shaped magnet 33 and two clamping plate 32, pointer 322 is arranged in the circular hole 321, pointer tip 322 points to the center of circle of circular hole 321 on the clamping plate 32, cylinder barrel shaped magnet 33 inserts in the circular hole 112 of measuring stick 1 straight section 11 outer end round ends 111 ends, under 32 clampings of two semicircular arc clamping plate, two measuring sticks 1 are hinged to one (such as accompanying

drawing

1,2,3,4,5, shown in 6)

Using method of the present invention:

1, survey external diameter: as shown in Figure 6 hand-held handle 3, allow the cone point 121 holding workpiece external diameters of two measuring sticks, 1 end and then move along vertical workpiece direction after, be clipped between two measuring sticks, 1 straight section, 11 medial surfaces 110 reading on the length graduation mark 21 on the dial 2, the external diameter value of surveying exactly.

2, survey internal diameter: hand-held handle 3 allows the cone point 121 of two measuring sticks, 1 end insert in the inner hole of workpiece as shown in Figure 1, be close to the inner hole of workpiece wall, make its two sharp 121 spacings maximum, be clipped between two measuring sticks, 1 straight section, 11 medial surfaces 110 reading on the length graduation mark 21 on the dial 2, the inner diameter values that will survey exactly.

3, measuring angle: as shown in Figure 6: hand-held handle 3, allow straight section 11 medial surfaces 110 of two measuring sticks 1 facing to the limit at measured workpiece angle, the point at the pointer tip 322 alignment pieces angles in semicircular arc clamping plate 32 circular holes 321 of lever 3, then observing being clipped between both sides gauge rod 1 straight section 11 medial surfaces 110 reading on the dial 2 upper angle graduation marks 22, is exactly required numerical value.

Claims

1. removable Multifunctional teaching aid, it is characterized in that: it is comprised of measuring stick, dial and lever, and dial is connected with measuring stick, and lever is connected with measuring stick.

2. a kind of removable Multifunctional teaching aid according to claim 1, it is characterized in that: described measuring stick has that shape is identical, two of equal in length, half of every length is straight section, another section is segmental arc, the outer end of straight section is globular model and circular hole is arranged, there is the groove that is magnetic between cone point, straight section and the segmental arc outer end of segmental arc, and the point connection is connected in the center of circle of straight section outer end circular hole with segmental arc line segment overlaps with the straight section medial surface.

3. a kind of removable Multifunctional teaching aid according to claim 1, it is characterized in that: described dial is arc, its thickness and magnetic groove depth equate, its width and magnetic well width equate, its front and back has graduation mark, they are: length, angle or radian, dial also are magnetic and the magnetic groove is socketed slidably.

4. a kind of removable Multifunctional teaching aid according to claim 1, it is characterized in that: described lever is by cylindrical bar, two semicircular arc clamping plate and cylinder barrel shaped magnet with circular hole form, two semicircular arc clamping plate Parallel Symmetric circular holes are relative, warp beam is connected on the cylindrical bar, the side that two clamping plate are relative is connecting respectively cylinder barrel shaped magnet, the center of circle of circular hole is relative on the axle center of cylinder barrel shaped magnet and two clamping plate, pointer is arranged in the circular hole, pointer tip points to the center of circle of circular hole on the clamping plate, cylinder barrel shaped magnet inserts in the circular hole of measuring stick straight section outer end round end section, and under two semicircular arc clamping plate clampings, two measuring sticks are hinged to one.