CN203759974U

CN203759974U - Cam mechanism comprehensive experiment apparatus

Info

Publication number: CN203759974U
Application number: CN201420128157.8U
Authority: CN
Inventors: 周永清; 李娟玲; 顾林; 张海军; 冯祯鈱
Original assignee: Nanjing Agricultural University
Current assignee: Nanjing Agricultural University
Priority date: 2014-03-20
Filing date: 2014-03-20
Publication date: 2014-08-06
Anticipated expiration: 2024-03-20

Abstract

A cam mechanism comprehensive experiment apparatus comprises a bottom plate, and is characterized by also comprising a hollow rotating disk, a slide block, a rotating block, a plurality of locking pieces and a push rod; wherein the bottom plate is provided with a pin, a middle position of the rotating disk is provided with a pin hole which can sleeve the pin, the slide block slides in a guide groove at an upper end of the rotating disk, the rotating block is hinged on the slide block, the push rod passes through the rotating block, the locking pieces are used for controlling whether the rotating disk can rotate, whether the slide block can slide, whether the rotating block can rotate, and whether the push rod can move relative to the rotating block. The cam mechanism comprehensive experiment apparatus of the utility model can realize direct-acting and swing driven member cam mechanism motion demonstration, and can draw a cam contour by using a reverse method according to movement rule of the driven member, so as to help students understand the advantages and essentials of the reverse method.

Description

Cam mechanism comprehensive experimental device

Technical field

The utility model relates to a kind of education experiment apparatus, be particularly related to a kind of cam mechanism integrated demonstration experimental device, it can be deformed into straight moving and Plate Cam Mechanism With Swing Driven member apparatus for demonstrating, the more important thing is the teaching etc. that can generate for reversal process cam contour.

Background technology

The application of cam mechanism is very extensive, and it often appears in numerous industrial and agricultural machineries and engineering machinery.Therefore, cam mechanism is one of most important mechanism of mechanical principle or Fundamentals of Machine Design learning.Designing cam contour with reversal process is weight, the difficult point content of imparting knowledge to students.Have not yet to see the experimental provision of this respect aided education, mostly what have now is by a motion of ready-made cam demonstration push rod or the characteristics of motion of drawing push rod, as: ZL200620127760.X, ZL201120445030.5, ZL200420087429.X.

Utility model content

The purpose of this utility model is to provide a kind of brief but remarkable integrated experimental device, it not only can be for straight moving or Plate Cam Mechanism With Swing Driven member motion demonstrating, the device that more can realize the profile of the straight moving or cam of oscillating follower of reversal process design, can help the pleasant place of classmate's intuitivism apprehension reversal process and essence to want.

In order to achieve the above object, the utility model adopts following technical scheme:

Cam mechanism comprehensive experimental device of the present utility model, comprise base plate, its feature also comprises rotating disk, slide block, switch block, some lock pieces, the push rod of hollow out, on base plate, there is a bearing pin, rotating disk interposition is equipped with a pin-and-hole and can be enclosed within on this bearing pin, and slide block slides in the guide groove of rotating disk upper end, and switch block is hinged on slide block, push rod passes from switch block, and lock piece is used for controlling that can rotating disk rotate, can slide block slide, can switch block rotate, can push rod move relative to switch block.

Described pusher table has been worn length scale.

Described push rod can be replaced by fork in the time drawing Plate Cam Mechanism With Swing Driven member.

The described part of locking that can rotating disk rotate for controlling, can slide block slide, can switch block rotate, can push rod move can be screw.

The upper edge of the rotating disk of described hollow out is with length scale, and centre position is " 0 " scale, both sides symmetry.

The beneficial effects of the utility model are:

1. simple in structure, cost is low.

2. distortion is many, powerful.Major function has:

A) Cam Mechanism of Moved Member motion demonstrating;

B) cam with oscillating follower motion demonstrating;

C) cam of rectilinear movement follower profile reversal process drawing instrument;

D) cam of oscillating follower profile reversal process drawing instrument;

3. by making, help student to understand and ultimate principle and the operation steps of grasping reversal process design.

Brief description of the drawings

Fig. 1 is the structural principle schematic diagram of the utility model overall picture.

Fig. 2 be in Fig. 1 A to view.

Fig. 3 is fork schematic diagram.

In accompanying drawing: 1, frame, 3, rotating disk, 4, chute, 5, slide block, 6, switch block, 7, push rod, 2,8,10,11, lock piece, 9, the hinge of slide block and switch block, 12, bearing pin, 13, openwork part.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

As Fig. 1, shown in 2, cam mechanism comprehensive experimental device of the present utility model, comprise frame 1, its feature also comprises the rotating disk 3 with openwork part 13, slide block 5, switch block 6, some lock pieces 2, 8, 10 and 11, push rod 7, in frame, there is a bearing pin 12, rotating disk interposition is equipped with a pin-and-hole and can be enclosed within on aforementioned bearing pin 12, slide block 5 slides in the guide groove 4 of rotating disk upper end, switch block is hinged on slide block, push rod 7 passes from switch block 6, lock piece 2, 10, can 11 and 8 rotate around bearing pin 12 for controlling rotating disk 3, can slide block slide along guide groove 4, can switch block rotate around hinge 9, can push rod 7 move relative to switch block 6.

If unclamp the removable slide block of lock piece 10, for regulating the offset or dish of driven member, locking 10 after putting in place.

Equal locking 11 during for cam of rectilinear movement follower profile design or motion demonstrating, unclamps 8.

Equal locking 8 during for cam of oscillating follower profile design or motion demonstrating, unclamps 11.

In the time drawing for cam contour, unclamp and lock part 2, rotating disk entirety is taken off from bearing pin 12, the sheet material that center drilling size is equaled to bearing pin 12 is (as plank, cardboard, plastic plate) be enclosed within on bearing pin 12, then manage (as used clip, glue, drawing pin etc.) limit it and rotate around bearing pin 12, again rotating disk 3 is installed on bearing pin 12, regulate offset or dish, then according to the characteristics of motion of push rod or fork, oppositely (with known cam direction of rotation) rotary turnplate, the simultaneously mobile putter distance of the known movement of scale (now by) or rotational swing rod, and the lower position of cusp of push rod or fork is recorded on sheet material, finally with smooth curve, the position of cusp recording on sheet material is coupled together, obtain cam contour.Take off rotating disk and sheet material, along plot, cutting sheet material is obtained to cam, rotating disk is reinstalled, locking lock piece 2, forbid that rotating disk 3 rotates relative to base plate 1, afterwards gained cam is set on bearing pin 12, allows it rotate freely, then carry out motion demonstrating by aforementioned straight operation measure moving or cam with oscillating follower motion demonstrating.

The upper edge of hollow out rotating disk 3 is with length scale, and centre position is " 0 " scale, both sides symmetry.Push rod 7 surfaces are also with length scale.These length scales make operator be convenient to carry out associated adjustment by required size.

Above-mentioned embodiment is used for the utility model of explaining; instead of the utility model is limited; in the protection domain of spirit of the present utility model and claim; all the utility model is taked to be equal to replace or technical scheme that equivalent transformation obtains, all fall into protection domain of the present utility model.

Claims

1. a cam mechanism comprehensive experimental device, comprise base plate, its feature also comprises rotating disk, slide block, switch block, some lock pieces, the push rod of hollow out, on base plate, there is a bearing pin, rotating disk interposition is equipped with a pin-and-hole and can be enclosed within on this bearing pin, and slide block slides in the guide groove of rotating disk upper end, and switch block is hinged on slide block, push rod passes from switch block, and lock piece is used for controlling that can rotating disk rotate, can slide block slide, can switch block rotate, can push rod move relative to switch block.

2. cam mechanism comprehensive experimental device according to claim 1, is characterized in that described pusher table worn length scale.

3. cam mechanism comprehensive experimental device according to claim 1, is characterized in that described push rod can be replaced by fork in the time drawing Plate Cam Mechanism With Swing Driven member.

4. cam mechanism comprehensive experimental device according to claim 1, for controlling, can rotating disk rotate, can slide block slide, can switch block rotate, can push rod move to it is characterized in that described lock piece, can be screw.

5. cam mechanism comprehensive experimental device according to claim 1, is characterized in that the upper edge of described hollow out rotating disk is with length scale, and centre position is " 0 " scale, both sides symmetry.