Hand pulse structure of numerical control machine tool

Abstract

The utility model relates to a hand pulse structure of a numerical control machine tool. Comprising a handle, a dial, a spindle, a body, a bearing, a code disc and a circuit board. The handle is arranged on the dial; the dial is arranged at the top end of the main body; the bearing is embedded in an inner cavity of the main body; the main shaft is arranged on the bearing inner ring; and the coded disc and the circuit board are arranged at the bottom end of the main body. The technical problems of high processing cost, complicated structure and inconvenience in installation due to the fact that most structures of hand-operated pulse generators in the prior art are manufactured by aluminum alloy die-casting and then processing are solved.

Description

Technical Field

[0001] The utility model relates to the field of hand-cranked pulse generators, in particular to a hand-cranked pulse structure for numerically controlled machine tools. Background Art

[0002] As a vital component of modern manufacturing, the CNC industry is experiencing rapid growth. Its development trends include intelligence, automation, networking, precision, and sustainable development. The CNC industry will better meet the needs of the manufacturing industry and drive the development and progress of the entire industry. However, the CNC industry also faces challenges, such as technological maturity and equipment costs. Only by continuously innovating and improving technological levels can the CNC industry maintain sustainable development and play its vital role.

[0003] Manual pulse generators, also known as hand pulse generators, hand pulses, or electronic handwheels, are used for zero position correction and signal segmentation in CNC machine tools and printing machinery. When the handwheel rotates, an encoder generates a signal corresponding to the handwheel's movement, which is then used by the CNC system to select and position the coordinates. Most existing manual pulse generators are manufactured from die-cast aluminum alloys, resulting in high manufacturing costs and complex, inconvenient installation. Utility Model Content

[0004] The embodiment of the present application solves the technical problem that most of the manual pulse generator structures in the existing technical solutions are manufactured by aluminum alloy die-casting and reprocessing, which makes the processing cost high and the structure complex and inconvenient to install, by providing a manual pulse structure of a CNC machine tool.

[0005] The technical solutions adopted in the embodiments of this application are as follows:

[0006] A manual pulse structure for a CNC machine tool comprises a handle, a dial, a spindle, a main body, a bearing, a code disk and a circuit board; the handle is arranged on the dial; the dial is arranged at the top of the main body; the bearing is embedded in the inner cavity of the main body; the spindle is arranged on the inner ring of the bearing; the code disk and the circuit board are both arranged at the bottom of the main body.

[0007] A further technical solution is: the main shaft is set to a serrated structure; the angle between the serrations in the main shaft is 3.6°, and the main shaft is evenly divided into 100 graduated serrations; when the scale plate is rotated to drive the main shaft to rotate one grid at a time, it can stop after each rotation of one grid.

[0008] A further technical solution is: the main body is made of high-strength plastic material.

[0009] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0010] 1. Due to the use of a handle, dial, spindle, main body, bearing, code disk and circuit board, the handle makes it convenient for staff to grab the hand pulse structure. Since the bottom end of the spindle is fixedly connected to the inner ring of the bearing, when the spindle rotates, the bearing setting can reduce friction, thereby reducing the error during adjustment of the hand pulse structure. The user grabs the handle and rotates the dial to drive the code disk inside the main body to rotate. At this time, the circuit board will receive the transmission signal, and feedback the selected coordinates and position the coordinates. The entire operation process is simple and reliable, and convenient for staff to operate. By evenly dividing the spindle into 100 dividing teeth, the hand pulse structure can be made highly accurate and easy to assemble. Since the main body adopts a plastic structure design, it can reduce costs and have a competitive advantage. The design of the circuit board can improve the reliability and stability of function implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of a manual pulse structure of a CNC machine tool in an embodiment of the present utility model.

[0012] Figure 2 It is a partial structural diagram for reflecting the code disk in the embodiment of the present utility model.

[0013] In the figure: 1. Handle; 2. Dial; 3. Spindle; 4. Main body; 5. Bearing; 6. Code disk; 7. Circuit board. DETAILED DESCRIPTION

[0014] The embodiment of the present application solves the technical problem that most of the manual pulse generator structures in the existing technical solutions are manufactured by aluminum alloy die-casting and reprocessing, which makes the processing cost high and the structure complex and inconvenient to install, by providing a manual pulse structure of a CNC machine tool.

[0015] The technical solution in the embodiments of the present application is to solve the above problems, and the overall idea is as follows:

[0016] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] A manual pulse structure of a CNC machine tool, such as Figure 1 and Figure 2 As shown, the device comprises a handle 1, a scale plate 2, a spindle 3, a main body 4, a bearing 5, a code disk 6, and a circuit board 7. The handle 1 is mounted on the scale plate 2. The scale plate 2 is mounted on the top of the main body 4. The bearing 5 is embedded in the inner cavity of the main body 4. The spindle 3 is mounted on the inner ring of the bearing 5. The code disk 6 and circuit board 7 are both mounted on the bottom of the main body 4.

[0018] The spindle 3 is configured with a sawtooth structure. The angle between the teeth is 3.6°, and the spindle 3 is divided into 100 graduated sawtooths. When the dial 2 is rotated, the spindle 3 rotates one grid at a time, and stops after each grid.

[0019] The main body 4 is made of high-strength plastic.

[0020] Handle 1 is fixedly attached to the top of dial 2. Dial 2 is removably fixed to the top of main body 4. The bottom end of spindle 3 is fixedly attached to the inner ring of bearing 5. Code disk 6 and circuit board 7 are both fixedly mounted to the bottom of main body 4. Spindle 3 is manufactured using powder metallurgy and molded to ensure precision and dimensional stability. A reflective code disk design is used, with two code tracks with a 90-degree phase difference, arranged concentrically with a 0-degree phase difference. This simplifies grating fabrication and prevents crosstalk between the A and B signals during signal reading. The circuit design in circuit board 7 utilizes a reflective infrared transceiver module, coupled with a photoresistor and sampling resistor to read the code disk's stripe changes, achieving photoelectric conversion. The converted voltage signal is then fed into the positive terminal of the comparator. The resistor provides a comparison voltage to the negative terminal of the comparator. This resistor acts as a positive feedback resistor to ensure that the rising and falling edges of the A / D conversion are staggered, preventing edge jitter during high-to-low level transitions. The resistor also acts as a pull-up resistor for the comparator, converting the A / D converted signal into a voltage signal for the user. The use of a reflective infrared transceiver module reduces the encoder's thickness by 10mm and its diameter by 20mm, making it more suitable for use in environments with limited space.

[0021] Due to the arrangement of the handle 1, dial 2, spindle 3, main body 4, bearing 5, code disk 6 and circuit board 7, the handle 1 makes it easy for staff to grab the hand pulse structure. Since the bottom end of the spindle 3 is fixedly connected to the inner ring of the bearing 5, when the spindle 3 rotates, the arrangement of the bearing 5 can reduce friction, thereby reducing the error when adjusting the hand pulse structure. The user grasps the handle 1 and rotates the dial 2, driving the code disk 6 inside the main body 4 to rotate. At this time, the circuit board 7 will receive the transmission signal, feedback the selected coordinates and position the coordinates. The entire operation process is simple and reliable, and convenient for staff to operate. By evenly dividing the spindle 3 into 100 dividing teeth, the hand pulse structure can be made highly accurate and easy to assemble. Since the main body 4 adopts a plastic structure design, it can reduce costs and have a competitive advantage. The design of the circuit board can improve the reliability and stability of the function.

[0022] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0023] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A manual pulse structure for a CNC machine tool, characterized in that: The invention comprises a handle (1), a scale plate (2), a main shaft (3), a main body (4), a bearing (5), a code plate (6) and a circuit board (7); the handle (1) is arranged on the scale plate (2); the scale plate (2) is arranged at the top of the main body (4); the bearing (5) is embedded in the inner cavity of the main body (4); the main shaft (3) is arranged on the inner ring of the bearing (5); the code plate (6) and the circuit board (7) are both arranged at the bottom of the main body (4).

2. A CNC machine tool manual pulse structure as claimed in claim 1, characterized in that: The main shaft (3) is configured as a sawtooth structure; the angle between the saw teeth in the main shaft (3) is 3.6°, and the main shaft (3) is evenly divided into 100 graduated saw teeth; when the graduated disk (2) is rotated to drive the main shaft (3) to rotate one grid at a time, the main shaft (3) can stop after each grid rotation.

3. A CNC machine tool manual pulse structure according to claim 1, characterized in that: The main body (4) is made of high-strength plastic material.

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