Precise numerical control lathe with fixed-distance cut-off function

Abstract

The utility model discloses a precise numerical control lathe with a fixed-distance cut-off function, which belongs to the technical field of numerical control lathes and comprises a machine body, a base is connected to the bottom end of the machine body, a transverse linear guide rail is arranged at the bottom end in the machine body, a cut-off mechanism is slidably connected to the linear guide rail, and a grating ruler is arranged on the rear side of the cut-off mechanism. A grating ruler reading head is installed on the side wall of the cut-off mechanism, and a laser range finder is installed at the top end of the cut-off mechanism. According to the fixed-distance cutting device, fixed-distance cutting can be more accurate, and meanwhile waste chips generated in the cutting or machining process are recycled.

Description

Technical Field

[0001] This utility model belongs to the field of CNC lathe technology, specifically relating to a precision CNC lathe with a fixed-distance cutting function. Background Technology

[0002] With the continuous development of the manufacturing industry, CNC machine tools are increasingly widely used in production, especially in the field of precision machining. Precision CNC lathes have attracted widespread attention due to their high efficiency, high precision, and high degree of automation. However, existing CNC lathes often lack the function of fixed-distance cutting when performing cutting operations, which makes it impossible to meet the high-precision and high-efficiency manufacturing requirements under certain processing needs. Traditional cutting methods usually rely on manual labor or simple mechanical devices, which have problems such as insufficient precision, slow processing speed, and instability caused by human operation differences.

[0003] Chinese patent CN218425664U discloses a precision CNC lathe with a fixed-distance cutting function. The lathe includes a lathe body, a servo motor bolted to one side of its interior, and a ball screw laterally mounted at the output end of the servo motor. The ball screw is mounted inside the lathe body via a mounting bracket. A groove is formed on the inner bottom surface of the lathe body, and a slider is slidably connected inside the groove. A nut is threaded onto the surface of the ball screw, and the bottom surface of the nut is welded to the top surface of the slider. A bearing plate is welded on, and a limit groove is formed on the surface of the bearing plate. A limit rod is installed through the limit groove, and a limit block is welded to one end of the limit rod inside the limit groove. The other end of the limit rod is bolted to a mounting plate. A movable plate is slidably connected to the surface of the limit rod, and a buffer spring is sleeved between the movable plate and the mounting plate on the outside of the limit rod. An electric actuator is installed on one side surface of the bearing plate through a mounting component, and the telescopic end of the electric actuator passes through the surface of the bearing plate and is connected to one side surface of the movable plate through the mounting component. A cutting tool is detachably installed on the side surface of the mounting plate away from the movable plate.

[0004] The aforementioned existing technology installs a cutting tool, enabling CNC lathes to have a cutting function. However, the accuracy of the fixed-distance cutting cannot be guaranteed, and the waste generated during cutting cannot be recycled, which poses a risk of machine damage over time. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a precision CNC lathe with a fixed-distance cutting function, which can make the fixed-distance cutting more accurate, and at the same time recycle the waste generated during the cutting or processing.

[0006] The technical solution adopted by this utility model is a precision CNC lathe with a fixed-distance cutting function, including a machine body, a base connected to the bottom of the machine body, a transverse linear guide rail provided at the bottom of the machine body, a cutting mechanism slidably connected on the linear guide rail, a grating ruler provided on the rear side of the cutting mechanism, a grating ruler reading head installed on the side wall of the cutting mechanism, and a laser rangefinder installed on the top of the cutting mechanism.

[0007] The present invention is further characterized in that,

[0008] The cutting mechanism includes a drive motor located on one side inside the machine body. The output end of the drive motor is connected to a lead screw, and the lead screw is slidably connected to a sliding block. The top of the sliding block is connected to a cutting device.

[0009] The cutting device includes a fixed block connected to the top of the sliding block. A telescopic motor is connected to the side of the fixed block near the grating ruler. The telescopic end of the telescopic motor passes through the fixed block and is connected to a tool holder block. A guide rod communicates between the tool holder block and the fixed block. A tool is connected to the side of the tool holder block away from the fixed block. A laser rangefinder is connected to the top of the tool holder block through a mounting bracket.

[0010] The machine body has a groove inside, which is located below the linear guide rail. The base has a collection box inside, and the position of the collection box corresponds to the position of the groove.

[0011] It also includes a control terminal, which is electrically connected to the grating ruler, the grating ruler reading head, the laser rangefinder, the drive motor, and the telescopic motor.

[0012] The beneficial effects of this utility model are:

[0013] (1) The precision CNC lathe with fixed-distance cutting function of this utility model realizes real-time measurement and feedback of the cutting position by setting a grating ruler and a laser rangefinder in the cutting mechanism, which significantly improves the processing accuracy and ensures efficient and stable control of the cutting length.

[0014] (2) The laser ranging technology and grating ruler reading head used in the precision CNC lathe with fixed distance cutting function of this utility model constitute a high-precision measurement system, which can effectively monitor the cutting process and reduce the risk of tool damage and workpiece waste.

[0015] (3) The precision CNC lathe with fixed-distance cutting function of this utility model can effectively collect the waste generated during the cutting process through the collection box and groove design, which facilitates the later cleaning and maintenance, and improves the operability and environmental protection of the equipment. Attached Figure Description

[0016] Figure 1This is an overall structural diagram of a precision CNC lathe with a fixed-distance cutting function according to this utility model;

[0017] Figure 2 This is a schematic diagram of the cutting mechanism in a precision CNC lathe with a fixed-distance cutting function according to this utility model;

[0018] Figure 3 This is a schematic diagram of the cutting device in a precision CNC lathe with a fixed-distance cutting function according to this utility model;

[0019] Figure 4 This is a structural diagram of the cutting tool in this utility model.

[0020] In the diagram, 1. Body, 2. Base, 201. Collection box, 3. Cutting mechanism, 301. Drive motor, 302. Lead screw, 303. Sliding block, 304. Cutting device, 3041. Fixing block, 3042. Telescopic motor, 3043. Tool holder block, 3044. Guide rod, 3045. Tool, 4. Grating ruler, 5. Grating ruler reading head, 6. Laser rangefinder, 7. Control terminal. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1:

[0022] like Figure 1-4 As shown, this utility model discloses a precision CNC lathe with a fixed-distance cutting function, including a machine body 1, a base 2 connected to the bottom of the machine body 1, a transverse linear guide rail provided at the bottom of the machine body 1, a cutting mechanism 3 slidably connected on the linear guide rail, the cutting mechanism 3 slides laterally on the linear guide rail to facilitate the determination of the cutting point and the length of the workpiece, etc., a grating ruler 4 is provided on the rear side of the cutting mechanism 3, a grating ruler reading head 5 is installed on the side wall of the cutting mechanism 3, the grating ruler 4 and the grating ruler reading head 5 can provide feedback on the moving distance of the cutting mechanism, and a laser rangefinder 6 is installed on the top of the cutting mechanism 3, the direction of the projected laser of the laser rangefinder 6 is perpendicular to the surface of the workpiece.

[0023] The cutting mechanism 3 includes a drive motor 301 located inside the body 1 on one side. The drive motor 301 is fixed inside the body 1 by bolts. The output end of the drive motor 301 is connected to a lead screw 302. The lead screw 302 is slidably connected to a sliding block 303. The bottom end of the sliding block 303 is provided with a sliding groove. The size of the sliding groove matches the size of the linear guide rail, which facilitates the sliding block 303 to move laterally on the linear guide rail. The top end of the sliding block 303 is connected to a cutting device 304.

[0024] The cutting device 304 includes a fixed block 3041 connected to the top of the sliding block. A telescopic motor 3042 is connected to the side of the fixed block 3041 near the grating ruler 4. The telescopic end of the telescopic motor 3042 passes through the fixed block 3041 and is connected to a tool holder block 3043. The telescopic motor 3042 drives the tool holder block 3043 to move longitudinally. A guide rod 3044 is connected between the tool holder block 3043 and the fixed block 3041. A spring is sleeved on the guide rod 3044 to reduce vibration of the tool holder block 3043 during movement. A tool 3045 is connected to the side of the tool holder block 3043 away from the fixed block 3041. A laser rangefinder 6 is connected to the top of the tool holder block 3043 through a mounting bracket.

[0025] The head of the cutting tool 3045 is shaped like a truncated pyramid, but there is only one edge on the top right side. This design allows it to cut the workpiece more sharply.

[0026] The grating ruler 4 is used to monitor the specific lateral displacement of the cutting mechanism 3, and the laser rangefinder 6 is used to detect the actual cutting point position of the workpiece. The dual closed-loop system greatly improves the cutting accuracy and reduces mechanical errors.

[0027] The machine body 1 has a groove inside, which is located below the linear guide rail. The base 2 has a collection box 201 inside, which is used to collect waste chips generated during the workpiece processing. The position of the collection box 201 corresponds to the position of the groove. The collection box 201 is equipped with a negative pressure device for adsorbing the waste chips.

[0028] It also includes a control terminal 11, which is electrically connected to the grating ruler 4, the grating ruler reading head 5, the laser rangefinder 6, the drive motor 301, and the telescopic motor 3042.

[0029] Working principle: During operation, the workpiece is placed on the precision CNC lathe body 1 for turning. Then, the grating ruler controls the drive motor 301 to move the cutting mechanism 3 to the target position to be cut according to the preset cutting length. After the cutting mechanism 3 reaches the target position, the laser rangefinder 6 immediately measures the vertical distance from the workpiece surface to the laser rangefinder 6. If the workpiece diameter changes or the clamping is offset, the laser rangefinder 6 detects the vertical distance deviation. The control terminal 7 converts this deviation into an axial compensation amount through geometric conversion and generates a compensation command through the PID algorithm. The drive motor 301 is driven to fine-tune the position of the cutting mechanism 3 to ensure that the actual position of the cutting point is consistent with the theoretical value. Then, the telescopic motor 3042 is driven to move the tool holder block 3043 along the guide rod 3044, so that the tool 3045 cuts the workpiece.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A precision CNC lathe with fixed distance cutting function, characterized in that, Including the body (1), the bottom end of the body (1) is connected with the base (2), the inside bottom end of the body (1) is provided with a transverse straight linear guide rail, the straight linear guide rail is slidably connected with the cutting mechanism (3), the rear side of the cutting mechanism (3) is provided with a grating ruler (4), the side wall of the cutting mechanism (3) is installed with a grating ruler reading head (5), and the top end of the cutting mechanism (3) is installed with a laser range finder (6).

2. The precision CNC lathe with fixed-length cutting function according to claim 1, characterized in that, The cutting mechanism (3) includes a drive motor (301) located on one side of the inside of the body (1), the output end of the drive motor (301) is connected with a lead screw (302), the lead screw (302) is slidably connected with a sliding block (303), and the top end of the sliding block (303) is connected with a cutting device (304).

3. The precision CNC lathe with fixed-length cutting function according to claim 2, characterized in that, The cutting device (304) includes a fixed block (3041) connected to the top end of the sliding block, a telescopic motor (3042) is connected to one side of the fixed block (3041) close to the grating ruler (4), the telescopic motor (3042) is connected with a tool holder block (3043) through the telescopic end penetrating the fixed block (3041), the tool holder block (3043) and the fixed block (3041) are communicated with a guide rod (3044), a cutter (3045) is connected to one side of the tool holder block (3043) away from the fixed block (3041), and the top end of the tool holder block (3043) is connected with the laser range finder (6) through the mounting frame.

4. The precision CNC lathe with fixed-length cutting function according to claim 3, characterized in that, The inside of the body (1) is provided with a groove, the groove is located below the straight linear guide rail, and the base (2) is provided with a collection box (201), the position of the collection box (201) corresponds to the position of the groove.

5. The precision CNC lathe with fixed-length cutting function according to claim 4, characterized in that, Further including a control terminal (7), the control terminal (7) is electrically connected with the grating ruler (4), the grating ruler reading head (5), the laser range finder (6), the drive motor (301) and the telescopic motor (3042).

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