CN104050861B - A kind of multi views shoot teaching appliance - Google Patents

Abstract

The invention provides a three-view shooting teaching instrument, comprising a camera support plate, a camera located on the camera support plate, a display stand, a base, the camera support plate is connected to the front end of a right-angle elbow, the tail end of the right-angle elbow is connected to the first The stepping motors are connected, the first stepping motor is set on the stepping motor guide rail slide table, and the first stepping motor guide rail slide table is vertically set on one side of the upper bottom surface of the large display platform; the display stand is divided into a large display platform and a small display platform platform, the large display platform is set on the base, the small display platform is located in the through hole of the large display platform, the bottom surface of the small display platform is connected with the second stepper motor through the rotating shaft, and the center of the bottom surface of the small display platform is connected with the camera support plate The center is on the same plane perpendicular to the display stand. The projector provided by the present invention can display multiple views of a placed model.

Description

A multi-view shooting teaching instrument

technical field

The invention belongs to the field of engineering drawing teaching, in particular to a multi-view shooting teaching instrument.

Background technique

Existing physical projectors need a projector plus a physical display stand, which is mainly used to display some physical pictures, physical objects, negative films, positive films and other geometric projections. Its disadvantage is that it cannot see views in three directions at the same time, cannot build point, line, and surface models, and will occupy a fixed space and cannot be moved at will.

Another product on the market is a 3D scanner whose purpose is to create the geometric surface of an object. But the price is more expensive, the collection of information is limited to a certain range, and it is not suitable for classroom use.

Contents of the invention

The purpose of the present invention is to provide a projector capable of displaying multiple views of placed models.

In order to achieve the above object, the present invention adopts the following technical solutions:

A multi-view shooting teaching instrument, comprising a camera support plate, a camera located on the camera support plate, a display stand, and a base, is characterized in that,

The camera support plate is connected to the front end of the right-angle elbow, and the tail end of the right-angle elbow is connected to the first stepping motor. The first stepping motor is set on the stepping motor guide rail slide table. One side of the bottom surface of the large display platform;

The display stand is divided into a large display platform and a small display platform. The large display platform is set on the base, and the small display platform is located in the through hole of the large display platform. The back of the small display platform is connected to the second stepper motor through a rotating shaft. The small display platform The center of the front and the center of the camera support plate are on the same plane perpendicular to the display stand. Compared with the prior art, the present invention has significant advantages: (1) It can build the three-dimensional relationship between lines and surfaces by itself, and can display the existing model from multiple angles; (2) It uses the first stepping motor and right-angle elbow , control the rotation and lifting of the camera, and realize the shooting of multiple views of the model; (3) the assembly and disassembly of the present invention are relatively convenient.

Description of drawings

Fig. 1 is the general structural diagram of the present invention;

Figure 2 is a top view of the large display platform;

Fig. 3 is a top view of the small display platform;

Fig. 4 is a schematic diagram of a combination of a large display platform and a small display platform.

detailed description

A multi-view shooting teaching instrument provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

A three-view shooting teaching instrument, comprising a camera support plate 1, a camera located on the camera support plate 1, a display stand, and a base 9;

The right-angle elbow 2 is L-shaped, with a camera support plate 1 at the front end and a sleeve at the end. The right-angle elbow 2 is connected to the first stepping motor through the sleeve, and the right-angle elbow 2 is driven by the first stepping motor Rotate with its connection with the first stepper motor as the axis. The first stepping motor is arranged on the stepping motor guide rail slide table 3, and the first stepping motor 16 is vertically fixed to a corner guide rail slide table 3 on the bottom surface of the display stand through the fixed slide table L bracket 4 along the stepping motor guide rail slide table 3 Built-in ball screw, the rotary motion is converted into linear motion through the ball screw for the first stepping motor 16 to slide up and down along the stepping motor guide rail slide table 3

The display stand is divided into a large display platform 5 with a rectangular upper bottom surface and a small display platform 15 with a cylindrical shape. The stepping motor guide rail slide table 3 is located on one side of the upper bottom surface of the large display platform 5. The large display platform 5 is locked by the support screw 11 and The nut 10 is fixed on the base 9, the large display platform 5 is centered with a circular through hole 5-1, and the small display platform 15 is located in the through hole 5-1 of the large display platform 5. The bottom surface of the small display platform 15 is connected with the second stepping motor 7 through the rotating shaft 6, the rotating shaft 6 is a thrust ball bearing, the second stepping motor 7 is fixed on the base 9 by the fixed motor L bracket, and the upper bottom surface of the small display platform 15 The center and the center of the camera support plate 1 are on the same plane perpendicular to the display stand.

The bottom surface of the large display platform 5 is evenly provided with more than three concave holes 5-2, and the three-dimensional relationship between lines and surfaces can be established by using these concave holes 5-2 in conjunction with thin rods and flat plates. When in use, the thin rod and the thin plate represent the line and the surface respectively. A series of concave holes 5 preset on the large display stand can stabilize the position of the thin rod by fitting with the lower part of the thin rod. The lower part of the thin plate also has a boss that can fit in the small hole on the display stand, which can stabilize the position of the thin plate.

White plexiglass plate 13 is fixed on the upper bottom surface of large display platform 5 by glass clamp 12, and white plexiglass plate 13 is positioned at the opposite side of the first stepping motor guide rail slide table 3.

In order to prevent the line from being disturbed, a circuit box and a power supply are placed on the base 9, and the first stepper motor, the driver and the single-chip microcomputer of the stepper motor guide rail slide table 3 and the second stepper motor 7 are placed in sequence in the circuit box, and the motor switch is placed on On the outer groove of the circuit box, the circuit box and the power supply are fixed on the base 9 with bolts.

The right-angle elbow 2 is driven by the first stepping motor to rotate on a vertical line perpendicular to the joint of the first stepping motor, and the right-angle elbow 2 drives the camera support plate 1 to rotate.

The small display platform 15 rotates on the plane where the large display platform 5 is located under the drive of the second stepping motor.

The specific three-direction view shooting steps of the present invention are:

Step 1, place the camera in a horizontal position, that is, the plane where the camera panel 1 is located is parallel to the large display platform 5, and take a picture at this time as the main view;

Step 2, use the program to control the first stepping motor to drive the right-angle elbow to rotate 90° clockwise until the plane where the camera plate 1 is located is perpendicular to the large display platform 5, and take a picture at this time as the left view;

Step 3, use the program to control the first stepping motor to drive the right-angle elbow to rotate 180° counterclockwise until the plane where the camera plate 1 is located is perpendicular to the large display platform 5, and take a picture at this time as the right view;

Step 4, the small display platform 15 is rotated 90° clockwise by the second stepper motor 7, and a picture is taken as a front view at this time;

Step 5, use the program to control the first stepping motor to drive the right-angle elbow to rotate 180° clockwise until the plane where the camera plate 1 is located is perpendicular to the large display platform 5, and take a picture at this time as the rear view;

In the process of multi-view shooting, according to the position of the model, the program can be used to control the rotation of the ball screw to realize the lifting of the camera to adjust the shooting distance.

Claims (6)

1. a kind of three-view diagram shoots teaching appliance, including camera supporting plate [1], the camera in camera supporting plate [1], Show stand, base [9], it is characterised in that

Camera supporting plate [1] is connected to the front end of elbow bend [2], the tail end and the first stepper motor of elbow bend [2] [16] it is connected, the first stepper motor [16] is arranged on stepper motor guide rail slide unit [3], the first stepper motor guide rail slide unit [3] It is vertically installed in the side of show stand upper bottom surface；

Show stand is divided into show platform [5] and small display platform [15], and show platform [5] is arranged on base [9], great Zhan Show that platform [5] middle position sets through hole [5-1]；Small display platform [15] is located in the through hole [5-1] of show platform [5], Small display platform [15] bottom surface is connected by rotary shaft [6] with the second stepper motor [7], in small display platform [15] upper bottom surface The heart and the center of camera supporting plate [1] are in the approximately the same plane of show stand.

2. three-view diagram according to claim 1 shoots teaching appliance, it is characterised in that show platform [5] upper bottom surface is set The shrinkage pool [5-2] of more than three.

3. three-view diagram according to claim 1 shoots teaching appliance, it is characterised in that elbow bend [2] is in the first stepping electricity Rotated under the driving of machine using the vertical line perpendicular to itself and the first stepper motor junction as axle.

4. three-view diagram according to claim 1 shoots teaching appliance, it is characterised in that small display platform [15] is in the second stepping In the Plane Rotation where show platform [5] under the driving of motor.

5. three-view diagram according to claim 1 shoots teaching appliance, it is characterised in that the upper bottom surface of show platform [5] hangs down Straight to set white pmma plate [13], white pmma plate [13] is located at the opposite of the first stepper motor guide rail slide unit [3].

6. three-view diagram according to claim 1 shoots teaching appliance, it is characterised in that rotary shaft [6] is thrust ball bearing.