CN108297581A - A kind of screw type ellipse plotting unit - Google Patents

Abstract

The invention relates to an ellipse drawing device, which belongs to the field of mechanical engineering. In order to overcome the shortcomings of the existing ellipse drawing device, the invention discloses a lead screw type ellipse drawing device. The technical solution for realizing the above invention is: use the ball screw mechanism to drive the slider to move in the cross chute, and then drive the paintbrush at the end of the telescopic arm connected to the two sliders to draw an ellipse. The lead screw type ellipse drawing device disclosed by the present invention has the following advantages: (1) use the lead screw structure to drive the slide block, so that the drawing process is stable, and the drawn figure is relatively smooth and beautiful; The adjustment of the telescopic arm is relatively convenient, and the scale on the screw rod can accurately adjust the size of the ellipse; (3) the structure is simple, the drawing speed is controllable, and it is convenient for practical operation and teaching demonstration.

Description

A lead screw type ellipse drawing device

technical field

The invention relates to an ellipse drawing device, which belongs to the field of mechanical engineering, in particular to a plane ellipse drawing method and equipment thereof.

Background technique

At present, most of the drawing tools can only draw straight lines and circles. The drawing of ellipses has always been one of the focuses of research and is often used in engineering surveying and daily teaching. Most of the existing ellipse drawing instruments stay at the level of simple manual drawing tools, and most of them have defects such as complicated drawing process, small drawing size, slow drawing speed, and inconvenient teaching and demonstration.

In order to overcome the inconveniences of existing ellipse drawing devices, the invention discloses a plane ellipse drawing instrument and drawing method which are simple and easy to implement, convenient to demonstrate, stable and reliable to draw, fast to draw, and have a large adjustable range of size.

Contents of the invention

The technical solution disclosed by the present invention is: a cross chute is provided, two inner grooves are respectively opened along the horizontal and vertical directions of the chute inside the chute, small steel balls are laid in the inner grooves, and a ball screw structure is arranged in the transverse grooves, Among them, the lead screw is connected with the motor, the lead screw nut is connected with the slider, and the slider in the transverse groove and the longitudinal groove is connected through the telescopic arm formed by connecting the two screws with the threaded sleeve, and the telescopic arm is connected with the two in the chute. The slider is fixedly connected, the other end of the telescopic arm is connected to the paintbrush, and the motor is connected to make the screw nut move left and right, so that the paintbrush can be used to draw an ellipse.

The screw-type ellipse drawing device that realizes the above-mentioned technical scheme is composed of a fixed cross chute structure, a ball screw structure, a set of slider linkage mechanism and a position fixing mechanism; the cross chute structure is composed of a support seat (1), electromagnet (11), big chute (16), ball (18), inner groove (20) constitute; Described ball screw structure is made of shaft coupling (7), motor (8), wire Lever nut (9), lead screw rod (10) constitute; Described slider link mechanism is made of paintbrush (3), connecting bolt (4), threaded sleeve (5), adjustable screw rod (6), small iron Block (12), horizontal axis slide block (17), vertical axis slide block (19) constitute; Described position fixing mechanism is made up of deflation valve (13), big suction cup (14) and spring rope (15);

The inner groove (20) is distributed at the bottom of the large chute (16), and the width above it is slightly smaller than the diameter of the ball (18), which can ensure that the ball (18) can roll in it without slipping, so as to reduce the horizontal The friction force when the shaft slide block (17) and the longitudinal shaft slide block (19) slide in the chute;

The electromagnets (11) are respectively distributed in the positive and negative directions below the vertical slot, and are symmetrical with the horizontal slot as the axis of symmetry. When the vertical axis slider (19) moves to the cross center of the large chute (16), , to energize the electromagnet (11) along the positive or negative direction of the vertical groove to make it magnetic, thereby generating a positive direction along the vertical groove to the small iron block (12) connected on the vertical axis slider (19). direction or negative direction, to ensure that the vertical axis slide block (19) can slide smoothly when moving to the center of the cross;

One end of the lead screw (10) is connected with the large chute (16) through the fixing bolt (2), and the other end is connected with the motor (8) through the shaft coupling (7) to obtain power;

The adjustable screw (6) is marked with a scale, and the length of the major and minor axes of the ellipse can be adjusted by adjusting the combined length of the threaded sleeve (5) and the adjustable screw (6), so as to achieve the purpose of drawing ellipses of different sizes. The length of the threaded sleeve (5) is longer, which can ensure the adjustment of a larger range of sizes;

Described big suction cup (14) is used to ensure the determination of the position of the plotter when drawing in the vertical plane, it is adsorbed in the working plane, and connected by the spring rope (15), it can ensure that the ellipsometer is in the vertical plane. Stability when facing the inner drawing, there is an air release valve (13) installed on its surface, when you want to move the position of the whole machine, open the air release valve (13), then the big suction cup (14) can be easily separated for operation surface, to ensure the sensitivity of its work;

The paintbrush (3) can be replaced with a chalk live pencil at will, so as to satisfy multiple functions such as drawing and teaching demonstration.

The lead screw type ellipse drawing device disclosed by the present invention has the following advantages:

(1) Use the screw structure to drive the slider, so that the drawing process is stable, and the drawn graphics are smoother and more beautiful;

(2) Use the screw rod to cooperate with the threaded sleeve to make the adjustment of the telescopic arm more convenient, and the scale on the screw rod can accurately adjust the size of the ellipse;

(3) The structure is simple, the drawing speed is controllable, and it is convenient for practical operation and teaching demonstration.

Description of drawings

Figure 1 is a schematic front view of a lead screw type ellipse drawing device

Figure 2 is a top view of the lead screw type ellipse drawing device

The meanings of the legend marks in the attached drawings are as follows:

1-Bracket seat, 2-Fixing bolt, 3-Painting brush, 4-Connecting bolt, 5-Thread sleeve, 6-Adjustable screw, 7-Coupling, 8-Motor, 9-Lead screw nut, 10-Wire Lever screw, 11- electromagnet, 12- small iron block, 13- air release valve, 14- large suction cup, 15- spring rope, 16- large chute, 17- horizontal axis slider, 18- ball, 19- vertical Shaft slider, 20-inner slot

Detailed ways

Provide specific embodiments below in conjunction with accompanying drawings. One embodiment of the present invention is to draw an ellipse in a vertical plane, as shown in the figure, the large suction cup (14) is tightly adsorbed on the vertical plane, the whole device is placed stably, and the threaded sleeve (5) is adjusted Combine the length with the adjustable screw rod (6) to reach the required size, switch on the power supply of the motor (8), and make it start running, so that the horizontal axis slide block (17) and the vertical axis slide block (19) are in the maximum Slide in the chute (16), and then draw the curve with the animation pen (3). When the vertical axis slider moves to the cross center of the large chute (16), the electromagnet along the positive or negative direction of the vertical chute (11) electrify, make it produce magnetism, thereby produce a force along vertical groove positive direction or negative direction to the small iron block (12) that is connected on the vertical axis slide block (19), to ensure that the vertical axis slide block ( 19) When moving to the center of the cross, it can slide smoothly. After crossing the center of the cross, power off the electromagnet (11) to eliminate the magnetism. After the entire drawing is completed, turn off the power of the motor (8) and open the air release valve (13), the big suction cup (14) is taken off, and the whole drawing work is all completed.

Another embodiment of the present invention is to place the position of the brush at the same distance from the vertical axis slider and the horizontal axis slider to draw circles of different sizes. These principles are the same, and structural changes can be made Other embodiments of the present invention.

Claims (7)

1. a leading screw type ellipse drawing device is made up of a fixed cross chute structure, a ball screw structure, a set of slide block linkage mechanism and position fixing mechanism; the cross chute structure is composed of support seat ( 1), electromagnet (11), big chute (16), ball (18), inner groove (20) constitute; Described ball screw structure is made up of shaft coupling (7), motor (8), leading screw Nut (9), lead screw rod (10) constitute; Described slider link mechanism is made of paintbrush (3), connecting bolt (4), threaded sleeve (5), adjustable screw rod (6), small iron block (12), horizontal axis slide block (17), vertical axis slide block (19) constitute; Described position fixing mechanism is made up of deflation valve (13), big sucker (14) and spring rope (15). 2. The lead screw type ellipse drawing device according to claim 1, characterized in that: the inner groove (20) is distributed at the bottom of the large chute (16), and the width above it is slightly smaller than that of the ball (18). Diameter, can guarantee that ball (18) can roll therein and not slide down, to reduce the frictional force when horizontal axis slide block (17) and vertical axis slide block (19) slide in the chute. 3. The lead screw type ellipse drawing device according to claim 1, characterized in that: the electromagnets (11) are respectively distributed in the positive and negative directions below the vertical slot, and are symmetrical with the horizontal slot as the axis of symmetry, When the vertical axis slider (19) moves to the center of the cross of the large chute (16), the electromagnet (11) along the positive or negative direction of the vertical groove is energized to make it magnetic, thereby connecting the vertical axis The small iron block (12) on the slide block (19) produces a force along the positive or negative direction of the vertical groove to ensure that the vertical axis slide block (19) can slide past smoothly when moving to the center of the cross. 4. The lead screw type ellipse drawing device according to claim 1, characterized in that: one end of the lead screw (10) is connected to the large chute (16) through a fixing bolt (2), and the other end is connected to the large chute (16) through a joint. Shaft device (7) links to each other with motor (8), to obtain power. 5. The lead screw type ellipse drawing device according to claim 1, characterized in that: the adjustable screw (6) is marked with a scale, which can be adjusted by adjusting the threaded sleeve (5) and the adjustable screw (6) The combined length of the ellipse is used to adjust the length of the major and minor axes of the ellipse to achieve the purpose of drawing ellipses of different sizes. The length of the threaded sleeve (5) is longer to ensure that the size can be adjusted in a larger range. 6. Lead screw type ellipse plotting device according to claim 1, is characterized in that: described big suction cup (14) is used for ensuring the determination of plotter position when carrying out the plotting in vertical plane, it is adsorbed In the working surface, the connection of the spring rope (15) can ensure the stability of the ellipsometer when drawing in the vertical plane. An air release valve (13) is installed on the surface. When the position of the whole machine is to be moved, Open the deflation valve (13), then the large suction cup (14) can be easily separated from the working surface, which can ensure the sensitivity of its work. 7. The lead-screw type ellipse drawing device according to claim 1, characterized in that: the paint brush (3) can be replaced with a chalk live pencil at will, so as to satisfy various functions such as drawing and teaching demonstration.