Cutting mechanism of metal cutting machine tool

Abstract

The utility model relates to the technical field of cutting mechanisms, in particular to a cutting mechanism of a metal cutting machine tool, the cutting section of the cutting mechanism is square, small square holes can be conveniently cut, the corners of the cut square holes are right-angle-shaped, and the machining precision of the square holes is high. Comprising a machine tool body, a spindle and a chuck. The upper end of the U-shaped frame is installed on the lower end face of the main shaft, the square frame is installed at the lower end of the U-shaped frame, the middles of the two cutters are rotationally installed in the square frame through the two rotating shafts respectively, the two cutters are oppositely arranged, the lower portions of the two cutters are cutter handles which are arranged in a staggered mode, and the cutter handles are arranged on the upper portion of the U-shaped frame. An alloy cutter is arranged at the lower end of the cutter handle, an oval sliding groove is formed in the lower end face of the guide wheel, the upper ends of the two cutters are symmetrically arranged in the oval sliding groove of the guide wheel in a sliding mode, and a shaft rod is arranged in the center of the upper end of the guide wheel and clamped in a chuck.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting mechanisms, in particular to a cutting mechanism of a metal cutting machine tool. Background Art

[0002] CNC machine tools are automated machine tools equipped with a program control system. CNC machine tools can be used to cut a variety of different materials, such as wood, plastic and metal. Among them, metal cutting machine tools use a high-speed rotating spindle to drive the cutting mechanism to rotate at high speed to cut the workpiece. Since the cutting mechanism is mainly a tool handle and an alloy tool, and uses high-speed rotation to cut metal workpieces, the cutting cross-section is circular, which makes it inconvenient to cut small square holes, and the corners of the square holes after cutting are rounded, resulting in low square hole processing accuracy. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a cutting mechanism of a metal cutting machine tool with a square cutting section, which is convenient for cutting small square holes, the corners of the square holes after cutting are right-angled, and the square hole processing accuracy is high.

[0004] The utility model discloses a cutting mechanism of a metal cutting machine tool, comprising a machine tool body, a spindle and a chuck, a workpiece platform and a lifting column are arranged on the machine tool body, the spindle is installed on the lifting column, and the chuck is arranged on the output shaft of the spindle; it also comprises a U-shaped frame, a square frame, two cutting knives, two rotating shafts, a guide wheel and a shaft rod, the upper end of the U-shaped frame is installed on the lower end surface of the spindle, the square frame is installed on the lower end of the U-shaped frame, the middle parts of the two cutting knives are respectively rotatably installed in the square frame through two rotating shafts, the two cutting knives are arranged oppositely, the lower parts of the two cutting knives are tool handles and are arranged alternately, an alloy knife is arranged at the lower end of the tool handle, an elliptical slide groove is arranged at the lower end surface of the guide wheel, the upper ends of the two cutting knives are respectively symmetrically slidably arranged in the elliptical slide groove of the guide wheel, the upper end center of the guide wheel is provided with a shaft rod, and the shaft rod is clamped in the chuck; it is necessary to When processing square holes in metal workpieces, the U-shaped frame is installed on the lower end surface of the main shaft, and the shaft rod is clamped in the chuck. The main shaft drives the chuck to rotate at high speed, and the chuck drives the guide wheel to rotate at high speed through the shaft rod. The elliptical slide groove of the guide wheel drives the upper ends of the two cutting tools to reciprocate, so that the lower tool holders of the two cutting tools synchronously reciprocate around the two rotating shafts, so that the alloy knives at the lower ends of the tool holders of the two cutting tools reciprocate and cut the metal workpiece. The main shaft descends on the lifting column of the machine tool body, so that the alloy knives of the two cutting tools perform small square hole processing on the metal workpiece. The relative horizontal movement of the main shaft and the workpiece platform can process square holes of different sizes and depths. The cutting cross-section is square, which is more convenient for cutting small square holes. Moreover, the corners of the square holes after cutting are right angles, which improves the square hole processing accuracy.

[0005] Preferably, it also includes four bearings, with two bearings symmetrically arranged on both sides of the square frame, and the two ends of the two rotating shafts are respectively installed in the inner rings of the four bearings; the two rotating shafts are symmetrically rotated on the square frame through four bearings, so that the two cutting knives and the two rotating shafts can rotate more smoothly and stably.

[0006] Preferably, it also includes two ball heads, the upper ends of the two cutting knives are rotatably mounted with ball heads, and the two ball heads are symmetrically rotatably arranged in the elliptical groove of the guide wheel; the upper ends of the two cutting knives are respectively slidably arranged in the elliptical groove of the guide wheel through the two ball heads, so that the reciprocating swing of the two cutting knives is smoother and more stable.

[0007] Preferably, it also includes a slide rail, two mounting plates and a slide rail ring. The slide rail is horizontally arranged on the outer wall of the guide wheel. The slide rail ring is installed on the U-shaped frame through two mounting plates. A slide rail matching the slide rail is arranged on the inner wall of the slide rail ring. The slide rail is horizontally arranged and is slidingly connected to the slide rail of the slide rail ring. The slide rail ring is installed on the U-shaped frame through two mounting plates. The slide rail ring horizontally limits the slide rail, thereby making the rotation of the guide wheel more stable.

[0008] Preferably, it also includes a driving rod and multiple blades. The driving rod is vertically installed at the center of the lower end surface of the guide wheel, and multiple blades are evenly arranged on the circumference of the lower end of the driving rod. When the guide wheel rotates, the driving rod and the multiple blades are driven to rotate, so that the multiple blades fan air downward, cool the two cutting knives, and blow the cut debris out of the square hole, thereby improving reliability.

[0009] Preferably, it also includes two laser heads, which are symmetrically installed in the lower part of the frame. The laser beams emitted by the two laser heads intersect at the axis of the shaft and form an intersection, and the intersection is located below the two cutting knives. Before starting processing, turn on the two laser heads, adjust the height of the spindle so that the intersection of the laser beams falls on the metal workpiece, and adjust the relative position of the spindle and the workpiece platform to facilitate centering operations and improve processing accuracy.

[0010] Compared with the prior art, the utility model has the following beneficial effects: when it is necessary to process square holes in a metal workpiece, the U-shaped frame is installed on the lower end surface of the main shaft, and the shaft rod is clamped in the chuck, the main shaft drives the chuck to rotate at high speed, and the chuck drives the guide wheel to rotate at high speed through the shaft rod, and the elliptical slide groove of the guide wheel drives the upper ends of the two cutting tools to reciprocate, so that the lower tool handles of the two cutting tools synchronously reciprocate around the two rotating shafts, so that the alloy knives at the lower ends of the tool handles of the two cutting tools reciprocate and cut the metal workpiece, and the main shaft descends on the lifting column of the machine tool body, so that the alloy knives of the two cutting tools perform small square holes on the metal workpiece, and the relative horizontal movement of the main shaft and the workpiece platform can process square holes of different sizes and depths, and the cutting cross-section is square, which is more convenient for cutting small square holes, and the corners of the square holes after cutting are right angles, thereby improving the square hole processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the spindle, chuck, U-shaped frame, frame, cutting knife, rotating shaft, guide wheel and other structures;

[0013] Figure 3 It is a schematic diagram of the structure of the U-shaped frame, the square frame, the cutting blade, the rotating shaft, the guide wheel, the shaft rod and the bearing;

[0014] Figure 4 It is a front cross-sectional structural diagram of the U-shaped frame, the square frame, the cutting blade, the rotating shaft, the guide wheel, the shaft rod and the bearing;

[0015] Figure 5 It is a schematic diagram of the structure of the U-shaped frame, the square frame, the cutting blade, the rotating shaft, the guide wheel, the shaft rod and the bearing in the exploded state;

[0016] Figure 6 It is a schematic diagram of the axonometric structure when the U-shaped frame, square frame, cutting knife, rotating shaft, guide wheel, shaft rod and bearing are in the exploded state.

[0017] Markings in the attached figure: 1. Machine tool body; 2. Spindle; 3. Chuck; 4. U-shaped frame; 5. Frame; 6. Cutting tool; 7. Rotating shaft; 8. Guide wheel; 9. Shaft; 10. Bearing; 11. Ball head; 12. Slide rail; 13. Mounting plate; 14. Slide rail ring; 15. Drive rod; 16. Blade; 17. Laser head. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0019] like Figures 1 to 5As shown, a cutting mechanism of a metal cutting machine tool includes a machine tool body 1, a spindle 2 and a chuck 3. A workpiece platform and a lifting column are arranged on the machine tool body 1, the spindle 2 is installed on the lifting column, and the chuck 3 is arranged on the output shaft of the spindle 2; it also includes a U-shaped frame 4, a square frame 5, two cutting knives 6, two rotating shafts 7, a guide wheel 8 and a shaft rod 9. The upper end of the U-shaped frame 4 is installed on the lower end surface of the spindle 2, the square frame 5 is installed on the lower end of the U-shaped frame 4, and the middle parts of the two cutting knives 6 are rotatably installed in the square frame 5 through two rotating shafts 7 respectively. The two cutting knives 6 are arranged opposite to each other, and the lower parts of the two cutting knives 6 are tool handles and are arranged alternately. An alloy knife is arranged at the lower end of the tool handle, and an elliptical slide groove is arranged on the lower end surface of the guide wheel 8. The upper ends of the two cutting knives 6 are symmetrically slidably arranged on the guide wheel 8 In the elliptical slide groove, an axle rod 9 is arranged at the center of the upper end of the guide wheel 8, and the axle rod 9 is clamped in the chuck 3; it also includes four bearings 10, two bearings 10 are symmetrically arranged on both sides of the square frame 5, and the two ends of the two rotating shafts 7 are respectively installed in the inner rings of the four bearings 10; it also includes two ball heads 11, the upper ends of the two cutting knives 6 are rotatably installed with ball heads 11, and the two ball heads 11 are symmetrically rotatably arranged in the elliptical slide groove of the guide wheel 8; it also includes a slide rail 12, two mounting plates 13 and a slide rail ring 14, the slide rail 12 is horizontally arranged on the outer wall of the guide wheel 8, the slide rail ring 14 is installed on the U-shaped frame 4 through two mounting plates 13, and a slide rail matching the slide rail 12 is arranged on the inner wall of the slide rail ring 14, the slide rail is horizontally arranged, and the slide rail 12 is slidably connected with the slide rail of the slide rail ring 14.

[0020] The two rotating shafts 7 are symmetrically mounted on the square frame 5 through four bearings 10, so that the two cutting knives 6 and the two rotating shafts 7 can rotate more smoothly and stably. The upper ends of the two cutting knives 6 are respectively slidably arranged in the elliptical slide grooves of the guide wheel 8 through two ball heads 11, so that the reciprocating swing of the two cutting knives 6 is smoother and more stable. The slide rail ring 14 is mounted on the U-shaped frame 4 through two mounting plates 13. The slide rail ring 14 limits the slide rail 12 horizontally, so that the rotation of the guide wheel 8 is more stable. When it is necessary to process a square hole on a metal workpiece, the U-shaped frame 4 is mounted on the lower end surface of the spindle 2, and the shaft 9 is clamped in the chuck 3. The spindle 2 drives the chuck 3 to rotate at a high speed, and the chuck 3 is driven by the spindle 2. The through-axis rod 9 drives the guide wheel 8 to rotate at a high speed, and the elliptical groove of the guide wheel 8 drives the upper ends of the two cutting knives 6 to move back and forth, so that the lower tool handles of the two cutting knives 6 move back and forth synchronously around the two rotating shafts 7, so that the alloy knives at the lower ends of the tool handles of the two cutting knives 6 reciprocate and cut the metal workpiece, and the spindle 2 descends on the lifting column of the machine tool body 1, so that the alloy knives of the two cutting knives 6 perform small square hole processing on the metal workpiece. The relative horizontal movement of the spindle 2 and the workpiece platform can process square holes of different sizes and depths. The cutting cross-section is square, which is more convenient for cutting small square holes, and the corners of the square holes after cutting are right angles, thereby improving the square hole processing accuracy. Example 2

[0021] like Figure 4 and Figure 6 As shown, on the basis of Example 1, it also includes a driving rod 15 and a plurality of blades 16. The driving rod 15 is vertically installed at the center of the lower end surface of the guide wheel 8, and a plurality of blades 16 are evenly arranged on the circumference of the lower end of the driving rod 15; when the guide wheel 8 rotates, the driving rod 15 and the plurality of blades 16 are driven to rotate, so that the plurality of blades 16 fan air downward, cool the two cutting knives 6, and blow the cut debris out of the square hole, thereby improving reliability. Example 3

[0022] like Figures 4 to 6 As shown, on the basis of Example 1, it also includes two laser heads 17, and the two laser heads 17 are symmetrically installed at the lower part of the frame 5. The laser beams emitted by the two laser heads 17 intersect at the axis of the shaft 9 and form an intersection, and the intersection is located below the two cutting knives 6; before starting processing, turn on the two laser heads 17, adjust the height of the spindle 2 so that the intersection of the laser beams falls on the metal workpiece, and adjust the relative position of the spindle 2 and the workpiece platform to facilitate the centering operation and improve the processing accuracy.

[0023] like Figures 1 to 6 As shown, a cutting mechanism of a metal cutting machine tool of the utility model, when it is working, firstly, when it is necessary to process a square hole on a metal workpiece, the U-shaped frame 4 is installed on the lower end surface of the spindle 2, and the shaft 9 is clamped in the chuck 3, the two laser heads 17 are turned on, the height of the spindle 2 is adjusted to make the intersection of the laser beam fall on the metal workpiece, the relative position of the spindle 2 and the workpiece platform is adjusted, and the centering operation is performed. After the centering is completed, the spindle 2 drives the chuck 3 to rotate at a high speed, and the chuck 3 drives the guide wheel 8 to rotate at a high speed through the shaft 9, and the slide rail ring 14 horizontally limits the slide rail 12, so that the rotation of the guide wheel 8 is more stable, and the elliptical slide groove of the guide wheel 8 is provided. The upper ends of the two cutting tools 6 are moved back and forth, so that the lower tool handles of the two cutting tools 6 are synchronously moved back and forth around the two rotating shafts 7, and then the alloy cutters at the lower ends of the tool handles of the two cutting tools 6 reciprocate to cut the metal workpiece, and the spindle 2 descends on the lifting column of the machine tool body 1, so that the alloy cutters of the two cutting tools 6 process small square holes on the metal workpiece. The relative horizontal movement of the spindle 2 and the workpiece platform can process square holes of different sizes and depths. Finally, when the guide wheel 8 rotates, it drives the drive rod 15 and the multiple blades 16 to rotate, so that the multiple blades 16 fan air downward, cool the two cutting tools 6, and blow the cut chips out of the square holes.

[0024] The main functions achieved by this utility model are:

[0025] 1. The cutting section is square, which is convenient for cutting small square holes. The corners of the square holes after cutting are right angles, and the square hole processing accuracy is high;

[0026] 2. Improve processing accuracy by assisting centering through the intersection of laser beams;

[0027] 3. Use a fan to cool the cutting tool and blow the debris out of the square hole.

[0028] The cutting mechanism of a metal cutting machine tool of the utility model is installed, connected or set in a common mechanical way, and any method that can achieve its beneficial effect can be implemented; the cutting mechanism of a metal cutting machine tool of the utility model includes a machine body 1, a spindle 2, a chuck 3, a rotating shaft 7, a guide wheel 8, a shaft 9, a bearing 10, a ball head 11, a slide rail 12, a slide rail ring 14, a driving rod 15, a blade 16 and a laser head 17 that are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0029] All technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A cutting mechanism of a metal cutting machine tool, comprising a machine tool body (1), a spindle (2) and a chuck (3), wherein a workpiece platform and a lifting column are arranged on the machine tool body (1), the spindle (2) is mounted on the lifting column, and the chuck (3) is arranged on the output shaft of the spindle (2); characterized in that: The invention also comprises a U-shaped frame (4), a square frame (5), two cutting knives (6), two rotating shafts (7), a guide wheel (8) and a shaft rod (9), wherein the upper end of the U-shaped frame (4) is mounted on the lower end surface of the main shaft (2), the square frame (5) is mounted on the lower end of the U-shaped frame (4), the middle parts of the two cutting knives (6) are rotatably mounted in the square frame (5) through two rotating shafts (7), the two cutting knives (6) are arranged opposite to each other, the lower parts of the two cutting knives (6) are tool handles and are arranged alternately, the lower end of the tool handle is provided with an alloy knife, the lower end surface of the guide wheel (8) is provided with an elliptical slide groove, the upper ends of the two cutting knives (6) are symmetrically slidably arranged in the elliptical slide groove of the guide wheel (8), the upper end center of the guide wheel (8) is provided with a shaft rod (9), and the shaft rod (9) is clamped in the chuck (3).

2. A cutting mechanism for a metal cutting machine tool as claimed in claim 1, characterized in that: It also includes four bearings (10), two bearings (10) are symmetrically arranged on both sides of the square frame (5), and the two ends of the two rotating shafts (7) are respectively installed in the inner rings of the four bearings (10).

3. The cutting mechanism of a metal cutting machine tool according to claim 1, characterized in that: It also includes two ball heads (11), the upper ends of the two cutting knives (6) are both rotatably mounted with the ball heads (11), and the two ball heads (11) are symmetrically rotatably arranged in the elliptical slide groove of the guide wheel (8).

4. The cutting mechanism of a metal cutting machine tool according to claim 1, characterized in that: The invention also comprises a slide rail (12), two mounting plates (13) and a slide rail ring (14); the slide rail (12) is horizontally arranged on the outer wall of the guide wheel (8); the slide rail ring (14) is mounted on the U-shaped frame (4) through the two mounting plates (13); a slide rail matching the slide rail (12) is arranged on the inner wall of the slide rail ring (14); the slide rail is horizontally arranged; and the slide rail (12) is slidably connected to the slide rail of the slide rail ring (14).

5. The cutting mechanism of a metal cutting machine tool according to claim 1, characterized in that: It also includes a driving rod (15) and a plurality of blades (16), wherein the driving rod (15) is vertically mounted at the center of the lower end surface of the guide wheel (8), and a plurality of blades (16) are evenly arranged on the circumference of the lower end of the driving rod (15).

6. The cutting mechanism of a metal cutting machine tool according to claim 1, characterized in that: It also includes two laser heads (17), which are symmetrically mounted at the bottom of the frame (5). The laser beams emitted by the two laser heads (17) intersect at the axis of the shaft (9) to form an intersection, and the intersection is located below the two cutting knives (6).

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