CN106485994B - Tool microscope demonstrator - Google Patents

Abstract

The invention relates to a tool microscope teaching board. A middle dial is installed between the upper bottom board and the lower bottom board. The outer circle of the middle dial is positioned by a cylindrical pulley and a cylindrical pulley sleeve installed on the upper bottom board. The middle dial can be positioned along the pulley. The column rotates; the top of the bottom plate is connected to the cross slider through the chute on both sides, and the top of the cross slider is connected to the horizontal slide through the chute. The horizontal slide can slide horizontally along the chute of the cross slide. Fix the threaded plate, connect the pulleys through the pulley bracket and the pulley shaft pin on the lower bottom plate and the slot in the middle of the lower part, respectively, and the two ends of the flexible rope go around the two pulleys respectively, and connect the cross slider after tensioning; the upper bottom plate and the lower bottom plate pass through Bolts and threaded posts hold together. The teaching range of the teaching board is equivalent to that of a tool microscope, and it can teach and measure thread pitch diameter, pitch error, flank angle error, template geometric angle, outer circle diameter, hole center distance, taper angle, slope, groove width, length and other items.

Description

Tool microscope teaching board

technical field

The invention relates to a mechanical teaching teaching board, in particular to a tool microscope teaching board with the same teaching range as the tool microscope, capable of teaching and measuring thread diameter, pitch error, flank angle error, template geometric angle, outer circle Diameter, hole center distance, taper angle, slope, groove width, length and other items.

Background technique

Tool microscopes are divided into large, small, universal and other types. Tool microscopes can be used to measure lengths and angles, and inspect complex-shaped parts such as turning tools, gear shapers, thread plug gauges, templates and other tools and measuring tools. Especially in thread measurement, it is often used. The most commonly used tool microscope is to measure thread pitch, thread diameter, thread half angle, etc. The tool microscope uses the principle of light transmission and reflection to magnify and project the workpiece to be measured on the focal plane of the eyepiece. The thread parameter measurement experiment on the tool microscope has always troubled teachers and students, because the teaching of the tool microscope eyepiece is difficult and time-consuming. Due to the particularity of the tool microscope, when the teacher explained to the students, the students could not intuitively see the operation process inside the eyepiece of the tool microscope, so students generally felt that it was abstract, difficult to understand, and difficult to operate. Often requires a lot of individual tutoring by the teacher. In the past, a classmate designed and manufactured a tool microscope eyepiece teaching instrument, but due to some defects in its design, it made it difficult for the teacher to teach and operate, and it was not vivid enough, and it could not meet the teaching requirements of large classes.

At present, in the teaching process of the tool microscope, the traditional method is that the teacher takes a tool microscope teaching board as a demonstration case and explains it directly. Because the microscope is too small, it cannot be effectively and directly explained. The prior art utilizes three-dimensional simulation animation to play the usage method of the tool microscope on a computer, but it cannot be operated by hands and loses its time performance.

Contents of the invention

In view of the above situation, the object of the present invention is to provide a special tool microscope teaching board in order to improve the teaching effect.

In order to achieve the purpose of the above invention, the technical solution of the present invention is: a tool microscope teaching board, including a lower base plate, a pulley bracket, a cross slider, a horizontal slide plate, a threaded plate, an intermediate dial, an upper base plate, a threaded column, and a flexible rope , pulley, pulley shaft pin, cylindrical pulley, cylindrical pulley sleeve, an intermediate dial is installed between the upper base plate and the lower base plate, and the outer circle of the intermediate dial is positioned by the cylindrical pulley and cylindrical pulley sleeve installed on the upper base plate. The dial can rotate along the cylindrical pulley and the cylindrical pulley sleeve; the upper bottom plate is connected to the cross slider through the chute on both sides, the cross slider can slide up and down along the chute on the lower bottom plate, and the cross slider passes through the chute Connect the horizontal slide plate, the horizontal slide plate can slide along the horizontal direction of the chute of the cross slider, the upper middle of the horizontal slide plate is fixed with the threaded plate by the magnet, and the lower bottom plate and the middle slot of the lower part are respectively connected to the pulley through the pulley bracket and the pulley shaft pin. The two ends of the flexible rope go around two pulleys respectively, and are connected to the cross slider after tension; the upper base plate and the lower base plate are fixed together by bolts and threaded columns.

The upper bottom plate, the lower bottom plate, the middle dial, the cross slide block and the horizontal sliding plate are made of transparent organic glass with a thickness of 5 mm to 8 mm.

The beneficial effects of the present invention are:

Due to the adoption of the above technical solution, the teaching range of the tool microscope teaching board of the present invention is equivalent to that of the tool microscope, and can teach and measure thread pitch diameter, pitch error, tooth flank angle error, template geometric angle, outer circle diameter, hole center distance, Cone angle, slope, groove width, length and other items. Through the enlarged tool microscope teaching board, all the real images inside the tool microscope eyepiece are revealed. All the students can intuitively see the measurement operation process inside the tool microscope eyepiece, which meets the teaching requirements of large classes. And by realistically simulating the whole process of measuring thread parameters with a tool microscope, the abstract and difficult experimental knowledge of thread parameter measurement becomes concrete, vivid and easy to understand.

Description of drawings

Fig. 1 is the structural representation of the tool microscope teaching board of the present invention;

Fig. 2 is the structural front view of horizontal slide plate;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the top view of Fig. 2;

Fig. 5 is the schematic diagram of pulley bracket;

Fig. 6 is the left side view of Fig. 5;

Fig. 7 is the schematic diagram of middle scale disc;

Fig. 8 is a cross-sectional view of the threaded column structure;

Figure 9 is a schematic plan view of the structure of the upper floor;

Figure 10 is a schematic plan view of the lower floor structure;

Figure 11 is a front view of the structure of the cross slide;

Fig. 12 is the left view of Fig. 11;

Figure 13 is a top view of Figure 11;

Fig. 14 is a structural schematic diagram of a cylindrical pulley;

Fig. 15 is a structural schematic diagram of a cylindrical pulley sleeve.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the drawings and examples, but the scope of the present invention should not be limited thereto.

As shown in Figures 1 to 15, a tool microscope teaching board includes a lower base plate 2, a pulley bracket 10, a cross slider 4, a horizontal slide plate 5, a threaded plate, an intermediate dial 3, an upper base plate 1, and a threaded column 9 , flexible rope, pulley 6, pulley shaft pin 7, cylindrical pulley 8, cylindrical pulley sleeve, etc. An intermediate dial 3 is installed between the upper base plate 1 and the lower base plate 2. The outer circle of the intermediate dial 3 is positioned by the cylindrical pulley 8 and the cylindrical pulley sleeve installed on the upper base plate 1. The intermediate dial 3 can be positioned along the cylindrical pulley 8, the cylindrical pulley The pulley sleeve rotates; the top of the lower bottom plate 2 is connected to the cross slider 4 through the chute on both sides, the cross slider 4 can slide up and down along the chute on the lower bottom plate 2, and the top of the cross slider 4 is connected to the horizontal slide plate through the chute 5. The horizontal slide plate can slide along the horizontal direction of the chute of the cross slider 4. The upper middle of the horizontal slide plate 4 fixes the threaded plate with a magnet, and the upper and lower middle slots of the lower base plate 2 pass through the pulley bracket 10 and the pulley shaft pin 7 respectively. Connect the pulley 6, the two ends of the flexible rope go around the two pulleys 6 respectively, and connect the cross slider 4 after tension; the upper bottom plate 1 and the lower bottom plate 2 are fixed together by bolts and threaded columns 9. The upper base plate 1, the lower base plate 2, the middle dial 3, the cross slider 4 and the horizontal slide plate 5 are made of transparent organic glass with a thickness of 5 mm to 8 mm.

The present invention relates to the field of mechanical measurement teaching. Specifically, the middle dial 3 is mounted on the back of the upper base plate 1. The middle dial 3 is positioned by a cylindrical pulley 8 fixed on the upper base plate by three central shafts and a cylindrical pulley sleeve. The middle dial 3 Rotation at any angle can be performed therein; the cross slider 4 is installed on the lower bottom plate 2, and the cross slider 4 can slide up and down along the chute on the lower bottom plate 2. Install the pulley 6 and the pulley bracket 10 on the slot on the upper part of the lower bottom plate 2; install the horizontal slide 5 on the cross slide 4, the horizontal slide 5 can slide along the horizontal chute of the cross slide 4, and then install the thread The board is fixed in the middle of the horizontal slide 5 with magnets; Fix the upper and lower bottom plates 1,2 with bolts and threaded columns 9. A pulley is respectively slotted on the top and bottom of the lower base plate of the tool microscope teaching board of the present invention, and a cross slide is connected with a flexible rope, and the rope goes around the two pulleys for tensioning. Move the cross slider by hand to make it move up and down. The main material used by the tool microscope teaching board of the present invention is transparent plexiglass with a thickness of 5mm and 8mm. The teaching board seen from every angle is transparent. The rotatable disc simulates the middle meter-line dial of the tool microscope, the cross slider and the horizontal plate simulate the movement slide table of the tool microscope, which has been applied in the teaching process of our school and has certain practical value.

The invention reveals all the real images inside the eyepiece of the tool microscope through the magnified teaching board of the tool microscope, so that all students can intuitively see the measurement operation process inside the eyepiece of the tool microscope, which meets the teaching requirements of large classes. Realistically simulate the whole process of thread parameter measurement by tool microscope, and make the abstract and difficult experimental knowledge of thread parameter measurement concrete, vivid and easy to understand. The teacher operates the teaching board to measure various items of the parts, and the students can follow the operation of the tool microscope to measure the various items of the parts while looking at the teaching board, which greatly saves teaching time and has a good teaching effect.

Claims (2)

1. a kind of tool microscope demonstrator, including lower plate (2), pulley bracket (10), crosshead shoe (4), horizontal slide plate (5), thread plate, mid-scale disk (3), upper plate (1), threaded post (9), flexible rope, pulley (6), pulley pivot pin (7), circle Column pulley (8), cylinder pulley sleeve, it is characterised in that: mid-scale disk is housed between the upper plate (1) and lower plate (2) (3), mid-scale disk (3) outer circle is positioned by the cylinder pulley (8) and cylinder pulley sleeve being mounted on upper plate (1), intermediate Dial (3) can be rotated along cylinder pulley (8) and cylinder pulley sleeve；The lower plate (2) is connected by the sliding slot of two sides above It connects crosshead shoe (4), crosshead shoe (4) can be slided up and down along the sliding slot on lower plate (2), and crosshead shoe (4) leads to above Sliding slot connection horizontal slide plate (5) is crossed, horizontal slide plate (5) can be along the sliding of the sliding slot horizontal direction of crosshead shoe, and level is sliding Plate (5) is intermediate above to pass through magnet fixed thread plate, passes through pulley branch respectively at fluting among lower plate (2) upper and lower part Frame (10), pulley pivot pin (7) connection pulley (6), the flexible rope both ends bypass two pulleys (6) respectively, connect after tensioning Crosshead shoe (4)；It is fixed together between the upper plate (1) and lower plate (2) by bolt and threaded post (9)；On described Bottom plate (1), lower plate (2), mid-scale disk (3), crosshead shoe (4) and horizontal slide plate (5) material be transparent organic glass.

2. tool microscope demonstrator according to claim 1, it is characterised in that: the upper plate (1), lower plate (2), Mid-scale disk (3), crosshead shoe (4) and horizontal slide plate (5) are made of the transparent organic glass of 5mm~8mm thickness.