High-precision center lathe

Abstract

The invention discloses a high-precision center lathe, and belongs to the technical field of lathe equipment, the high-precision center lathe comprises a machine body, a detection part is arranged on the machine body, the detection part comprises a first cylinder, a ball and a spring, the first cylinder is horizontally arranged, the ball is embedded in the end part of the first cylinder in a rolling manner, and the center of the ball and the center of a three-jaw chuck are located at the same horizontal height; the spring is horizontally arranged in the first air cylinder which is arranged on the machine body through an adjusting assembly and connected with a feedback component through a hose, the feedback component comprises an air tank and a pressure sensor, the pressure sensor is fixedly installed in the air tank, and the input end of the air tank is connected with the output end of the first air cylinder through a hose. And the pressure sensor is electrically connected with external terminal equipment. The problems that an existing lathe does not have a real-time detection function on machining precision, and product quality is affected are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of lathe equipment technology, specifically a high-precision conventional lathe. Background Technology

[0002] Lathes are mainly used to process rotating workpieces. When processing workpieces, the workpiece is often positioned by the chuck on the spindle. Specifically, the center inside the spindle holds the workpiece against the spindle, and then the jaws (mostly three jaws) on the chuck clamp the workpiece to achieve the positioning of the workpiece.

[0003] The invention patents with announcement numbers CN115106808B and CN113084212B respectively disclose a CNC machining tool for machining long shaft parts. By improving the clamping and support structure, the stability of long shaft workpieces during machining can be improved. However, since long shaft workpieces are mostly fixed on the lathe by chuck, the shaft segments far from the chuck are prone to displacement or vibration because they are not clamped. Existing lathes do not have real-time detection function for machining accuracy, which affects product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision conventional lathe to solve the problem mentioned in the background art that existing lathes do not have real-time detection function for machining accuracy, which affects product quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-precision conventional lathe includes: The machine body, on which a tool holder is slidably mounted; The machine body is equipped with a three-jaw chuck, which is used to fix the workpiece; The machine body is provided with a detection component, which includes a first cylinder, a ball, and a spring. The first cylinder is horizontally arranged, the ball is rolled and embedded at the end of the first cylinder, and the center of the ball is at the same horizontal height as the center of the three-jaw chuck. The spring is horizontally arranged inside the first cylinder. The first cylinder is set on the machine body through an adjustment component. The first cylinder is connected to a feedback component via a hose. The feedback component includes an air tank and a pressure sensor. The pressure sensor is fixedly installed inside the air tank. The input end of the air tank is connected to the output end of the first cylinder via a hose.

[0006] Preferably, the adjustment assembly includes a guide rail, a slide table, a first motor, a first screw, and a support block. The guide rail is horizontally fixedly installed on the upper surface of the machine body. The slide table is slidably embedded in the guide rail. The support block is fixedly installed on the machine body. The first motor is fixedly installed on the machine body. The first screw is horizontally threaded through the slide table, and one end is fixedly connected to the output shaft of the first motor through a coupling. The end of the first screw away from the first motor is rotatably sleeved in the support block.

[0007] Preferably, the adjustment assembly further includes a second motor, a second screw, a sleeve, and a connecting plate. The sleeve is fixedly mounted on the slide table, the first cylinder is slidably sleeved inside the sleeve, the second motor is fixedly mounted on the slide table, the connecting plate is fixedly sleeved at the end of the first cylinder, the second screw is threadedly sleeved inside the connecting plate, and its end is fixedly connected to the output shaft of the second motor via a coupling.

[0008] The vibration trajectory is simulated to facilitate later maintenance and correction. Preferably, the gas tank is fixedly installed on the side of the slide table by two retaining rings, and the bottom end is connected to a drawing component through a guide pipe.

[0009] Preferably, the drawing component includes a second cylinder, a support frame, a copy plate, and a carbon pen. The support frame is fixedly installed on the side of the slide table, the second cylinder is horizontally fixedly installed inside the support frame, the copy plate is horizontally fixedly installed on the side of the machine body, and the carbon pen is vertically movably sleeved on the end of the second cylinder. The end of the second cylinder is provided with a locking screw, and the bottom end of the air tank is connected to the input end of the second cylinder through a guide pipe. A valve is provided on the guide pipe.

[0010] The beneficial effects of this invention are as follows: (1) The present invention can detect the state of the workpiece in real time through the detection component and the feedback component, avoid the workpiece vibration from exceeding the normal value, ensure the machining accuracy of the workpiece, and during machining, the ball can be set on the opposite side of the tool holder, so that the force applied by the first cylinder to the tool holder can be corrected, avoid the workpiece being subjected to excessive force on one side, so that the workpiece is subjected to force balance, and further improve the machining accuracy of the workpiece. (2) The present invention uses the first cylinder and the second cylinder to drive the carbon pen to draw the trajectory of the extension and contraction of the first cylinder on the carbon copy plate. According to the trajectory, the length range of the workpiece that vibrates beyond the normal range can be clearly and intuitively known, which is convenient for later maintenance. Attached Figure Description

[0011] Figure 1 This is a frontal three-dimensional structural diagram of a high-precision conventional lathe proposed in this invention; Figure 2 This is a rear-view three-dimensional structural diagram of a high-precision conventional lathe proposed in this invention; Figure 3This is a top view schematic diagram of a high-precision conventional lathe proposed in this invention; Figure 4 This is a side view of a high-precision conventional lathe proposed in this invention. Figure 5 This is a front cross-sectional view of the first cylinder in a high-precision conventional lathe proposed in this invention. Figure 6 This is a front view cross-sectional diagram of a gas tank in a high-precision conventional lathe proposed in this invention.

[0012] In the diagram: 1. Machine body; 2. Tool holder; 3. Three-jaw chuck; 4. First cylinder; 5. Ball bearing; 6. Spring; 7. Hose; 8. Air tank; 9. Pressure sensor; 10. Guide rail; 11. Slide table; 12. First motor; 13. First screw; 14. Support block; 15. Second motor; 16. Second screw; 17. Sleeve; 18. Connecting plate; 19. Snap ring; 20. Guide tube; 21. Second cylinder; 22. Support frame; 23. Copy plate; 24. Carbon pen. Detailed Implementation

[0013] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] See Figure 1-6 A high-precision conventional lathe includes: a machine body 1, a tool post 2 slidably mounted on the machine body 1, a three-jaw chuck 3 on the machine body 1 for fixing the workpiece, a detection component on the machine body 1 including a first cylinder 4, a ball bearing 5, and a spring 6, the first cylinder 4 being horizontally positioned, the ball bearing 5 being rolled and embedded at the end of the first cylinder 4 with its center at the same horizontal height as the center of the three-jaw chuck 3, the spring 6 being horizontally positioned inside the first cylinder 4, the first cylinder 4 being mounted on the machine body 1 via an adjustment assembly, and a feedback component connected to the first cylinder 4 via a hose 7, the feedback component including an air tank 8 and a pressure sensor 9, the pressure sensor 9 being fixedly mounted inside the air tank 8, the input end of the air tank 8 being connected to the output end of the first cylinder 4 via the hose 7, and the pressure sensor 9 being electrically connected to an external terminal device.

[0015] The adjustment assembly includes a guide rail 10, a slide table 11, a first motor 12, a first screw 13, and a support block 14. The guide rail 10 is horizontally fixedly installed on the upper surface of the machine body 1. The slide table 11 is slidably embedded in the guide rail 10. The support block 14 is fixedly installed on the machine body 1. The first motor 12 is fixedly installed on the machine body 1. The first screw 13 is horizontally threaded through the slide table 11, and one end is fixedly connected to the output shaft of the first motor 12 through a coupling. The end of the first screw 13 away from the first motor 12 is rotatably sleeved in the support block 14.

[0016] The adjustment assembly also includes a second motor 15, a second screw 16, a sleeve 17, and a connecting plate 18. The sleeve 17 is fixedly mounted on the slide table 11, the first cylinder 4 is slidably sleeved inside the sleeve 17, the second motor 15 is fixedly mounted on the slide table 11, the connecting plate 18 is fixedly sleeved at the end of the first cylinder 4, the second screw 16 is threadedly sleeved inside the connecting plate 18, and its end is fixedly connected to the output shaft of the second motor 15 through a coupling.

[0017] When processing long shaft workpieces using this equipment, the end of the workpiece is clamped and fixed by a three-jaw chuck 3. Then, the first motor 12 and the second motor 15 are started. The second motor 15 rotates, driving the first cylinder 4 to move within the sleeve 17 via the second screw 16 and the connecting plate 18, so that the ball bearing 5 is in contact with the side of the workpiece. After contact with the workpiece, the terminal device records the pressure value of the first cylinder 4 at this time, which is the initial pressure value. During the processing, the first cylinder 4 contracts or extends, causing the pressure inside the air tank 8 to change. The pressure sensor 9 measures the air pressure inside the air tank 8 and feeds the measurement result back to the external terminal device in a timely manner. The terminal device then obtains the pressure value. The change is obtained by comparing the data value with the initial value, which determines the extension and retraction of the first cylinder 4, thereby obtaining the workpiece vibration parameters. The first motor 12 rotates, driving the slide table 11 to slide on the guide rail 10 through the first screw 13, causing the first cylinder 4 to move along the axis of the workpiece. The entire workpiece is then inspected. If the change in the detection value of the pressure sensor 9 is within a reasonable range, it indicates that the workpiece is in a standard state during processing. If the pressure value exceeds the normal range, it indicates that the vibration of the workpiece exceeds the allowable range, and the machine needs to be stopped for inspection. Through the above method, the state of the workpiece can be detected in real time to avoid the vibration of the workpiece exceeding the normal value and to ensure the processing accuracy of the workpiece.

[0018] During processing, the ball bearings 5 ​​can be positioned on the opposite side of the tool holder 2, so that the force applied by the first cylinder 4 to the tool holder 2 can be corrected, avoiding excessive force on one side of the workpiece, thus balancing the force on the workpiece and further improving the processing accuracy of the workpiece.

[0019] Example 2: The gas tank 8 is fixedly installed on the side of the slide table 11 by two retaining rings 19, and the bottom end is connected to the drawing component through the guide pipe 20.

[0020] The drawing components include a second cylinder 21, a support frame 22, a copy plate 23, and a carbon pen 24. The support frame 22 is fixedly installed on the side of the slide table 11. The second cylinder 21 is horizontally fixedly installed inside the support frame 22. The copy plate 23 is horizontally fixedly installed on the side of the machine body 1. The carbon pen 24 is vertically movably sleeved on the end of the second cylinder 21. The end of the second cylinder 21 is provided with a locking screw, which is used to fix the carbon pen 24 after replacement. The bottom end of the air tank 8 is connected to the input end of the second cylinder 21 through a guide pipe 20. A valve is provided on the guide pipe 20. When using the pressure sensor 9 for detection, the valve on the guide pipe 20 must be closed.

[0021] During the testing process, the valve can be opened to allow the second cylinder 21 to operate in tandem with the first cylinder 4. The second cylinder 21 is affected by the extension or contraction of the first cylinder 4, which drives the carbon pen 24 to draw the trajectory of the extension and contraction of the first cylinder 4 on the carbon copy plate 23. Based on the trajectory, the length range of the workpiece that vibrates beyond the normal range can be clearly and intuitively determined, which is convenient for later maintenance.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision conventional lathe, comprising: The machine body (1) has a slidably mounted tool holder (2) on it. The machine body (1) is provided with a three-jaw chuck (3), which is used to fix the workpiece; The feature is that: the body (1) is provided with a detection component, the detection component includes a first cylinder (4), a ball (5) and a spring (6), the first cylinder (4) is horizontally arranged, the ball (5) is rolled and embedded at the end of the first cylinder (4), and the center of the ball and the center of the three-jaw chuck (3) are at the same horizontal height, the spring (6) is horizontally arranged in the first cylinder (4), and the first cylinder (4) is arranged on the body (1) by an adjustment component; The first cylinder (4) is connected to a feedback component via a hose (7). The feedback component includes an air tank (8) and a pressure sensor (9). The pressure sensor (9) is fixedly installed inside the air tank (8). The input end of the air tank (8) is connected to the output end of the first cylinder (4) via a hose (7).

2. A high precision engine lathe as claimed in claim 1 wherein: The adjustment assembly includes a guide rail (10), a slide (11), a first motor (12), a first screw (13), and a support block (14). The guide rail (10) is horizontally fixedly installed on the upper surface of the machine body (1). The slide (11) is slidably embedded in the guide rail (10). The support block (14) is fixedly installed on the machine body (1). The first motor (12) is fixedly installed on the machine body (1). The first screw (13) is horizontally threaded through the slide (11), and one end is fixedly connected to the output shaft of the first motor (12) through a coupling. The end of the first screw (13) away from the first motor (12) is rotatably sleeved in the support block (14).

3. A high precision engine lathe as claimed in claim 2 wherein: The adjustment assembly also includes a second motor (15), a second screw (16), a sleeve (17), and a connecting plate (18). The sleeve (17) is fixedly installed on the slide table (11). The first cylinder (4) is slidably sleeved in the sleeve (17). The second motor (15) is fixedly installed on the slide table (11). The connecting plate (18) is fixedly sleeved on the end of the first cylinder (4). The second screw (16) is threadedly sleeved in the connecting plate (18), and its end is fixedly connected to the output shaft of the second motor (15) through a coupling.

4. A high precision engine lathe as claimed in claim 3 wherein: The gas tank (8) is fixedly installed on the side of the slide table (11) by two retaining rings (19), and the bottom end is connected to a drawing component through a guide pipe (20).

5. A high precision engine lathe as claimed in claim 4 wherein: The drawing component includes a second cylinder (21), a support frame (22), a copy plate (23), and a carbon pen (24). The support frame (22) is fixedly installed on the side of the slide table (11). The second cylinder (21) is horizontally fixedly installed inside the support frame (22). The copy plate (23) is horizontally fixedly installed on the side of the machine body (1). The carbon pen (24) is vertically movably sleeved on the end of the second cylinder (21). The end of the second cylinder (21) is provided with a locking screw. The bottom end of the air tank (8) is connected to the input end of the second cylinder (21) through a guide pipe (20). A valve is provided on the guide pipe (20).

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