Technical field:
The utility model relates to a cutting machine, in particular to a device for cutting hard and brittle crystal materials.
Background art:
As we all know, the internal cutting machine is a common equipment for cutting and processing hard and brittle crystal materials such as monocrystalline silicon, ceramics, glass and sapphire. At present, the internal circular cutting machine usually consists of a machine frame, a spindle assembly mounted on the machine frame, a workbench fixed on the machine frame, a transverse feeding assembly mounted on the workbench and a feeding assembly mounted on the transverse feeding assembly and capable of moving up and down. This traditional internal circular cutting machine has the following defects: i) Because the workpiece chuck fixed on the feed assembly is fixed and only the spindle drives the cutter ring to rotate to cut the workpiece, the cutting size is limited by the geometric size of the internal circular blade, and the cutting size is small. For example, the maximum cutting size of a standard blade with an inner diameter of 235 mm and an outer diameter of 690 mm is 165 mm. 2) Because the workpiece chuck holding the bar is fixed, only the spindle drives the cutter ring to rotate to cut the workpiece. The contact between the bar and the inner circular blade is arc contact, and the length of the arc periodically changes from short to long, and then from long to short, thus causing the periodic change of cutting force from small to large and then from large to small. Eventually, the inner circular blade will be rapidly worn or even damaged. 3) Because the cutting force is a variable value in the whole cutting process, if a higher cutting speed is determined according to the cutting force when the inner circular blade just touches the bar, the blade will be damaged when cutting to the core of the bar. On the contrary, if a lower cutting speed is determined based on the cutting force when the inner circular blade cuts the core of the bar, although the blade will not be damaged, the cutting efficiency will be greatly reduced. In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide an internal circle cutting machine with large processing size range, high cutting efficiency and long service life of blades. In order to achieve the above purpose, the utility model adopts the following technical scheme: comprising a machine frame, a spindle assembly arranged on the machine frame, a workbench fixed on the machine frame, a transverse feeding assembly arranged on the workbench and a feeding assembly arranged on the transverse feeding assembly; The spindle assembly consists of a spindle fixed on a frame, a cutter ring fixed on the spindle and a first motor driving the spindle to rotate; The workbench comprises a gantry fixed on the frame and spanning above the cutter ring; The transverse feeding assembly consists of a transverse sliding seat installed on the gantry and a second motor fixed on the gantry and driven by a first lead screw to move transversely; The feeding assembly consists of a vertical guide seat fixed on a transverse slide seat, a vertical slide seat arranged on the vertical guide seat, a fourth motor fixed on the vertical guide seat and driving the vertical slide seat to move up and down through a second screw, a shaft sleeve fixed on the vertical slide seat, a rotating shaft arranged in the shaft sleeve, a workpiece chuck fixed on the lower end of the rotating shaft, and a third motor fixed on the vertical slide seat and driving the rotating shaft to rotate through a traditional mechanism; The feeding assembly is provided with a manipulator assembly, which consists of a guide rail seat fixed on a vertical slide seat, a slide plate installed on the guide rail seat, a fifth motor fixed on the guide rail seat and driving the slide plate to move up and down through a third lead screw, a mechanical arm fixed on the slide plate and extending downward below the workpiece chuck, and a bearing fixed on the mechanical arm and coaxial with the rotating shaft. A counterweight mechanism is arranged on the transverse sliding seat, and the counterweight mechanism consists of a pulley frame fixed on the transverse sliding seat, two crown blocks fixed on the pulley frame, and a rope which bypasses one end of the two crown blocks and is fixedly connected with a vertical sliding seat at the other end; The lower end of the vertical guide rail seat is supported by the auxiliary guide rail on the fixed gantry. Compared with the prior art, due to the adoption of the technical scheme, the utility model has the following advantages: 1) the original cantilever workbench is changed into a gantry structure, so that the rigidity of the workbench is enhanced and the machining accuracy of the whole machine is improved; 2) Because the rotating shaft is added in the feeding assembly, the workpiece chuck can drive the bar to rotate through the rotating shaft, so that the contact between the bar and the inner circular blade is always point contact in the whole cutting process (the contact point is the tangent point of two circles); The contact between the bar and the inner circular blade in the traditional cutting method is completely avoided, and the force on the blade is more uniform, which effectively overcomes the shortcoming that the blade is easy to wear or damage under the action of periodic alternating cutting force and prolongs the service life of the tool. 3) Because the bar and the inner circular blade are always in point contact during the whole cutting process, a reasonable high cutting speed can be selected, which greatly improves the processing efficiency. 4) Because the bar also rotates in the whole cutting process, the machining size of the workpiece can be doubled under the condition that the specifications of the inner circular blade are unchanged.
Fig. 1 is a structural schematic diagram of the utility model; Fig. 2 is a right side view of figure 1; Fig. 3 is the left view in fig. 1, in which the main shaft 2 of the machine frame I, the cutter ring 3, the cover 4, the gantry 5, the workpiece chuck 6, the auxiliary guide 7, the rotating shaft 8, the second motor 9, the first screw 10 vertical slide rail10 horizontal slide rail 12 gear pair 13 horizontal slide rail 14. 7 Second lead screw 18 Fourth motor 19 crown block 20 pulley frame 2 1 fifth motor 22 Third lead screw 23 rope 24 carriage 25 carriage guide rail 26 guide rail seat 27 shaft sleeve 28 mechanical arm 29 bearing 30 First motor 3 1 belt 32 counterweight 3 Detailed description.
In figure 1-3, the spindle assembly is fixed on the frame 1, which consists of a first motor 3 1 and a spindle 2 fixed on the frame1,a cutter ring 3 fixed on the spindle, pulleys fixed on the first motor 3 1 and the spindle 2 respectively, and a belt connecting the two pulleys. The workbench is fixed on the frame I and consists of a gantry 5 fixed on the frame I and spanning above the cutter ring 3. The workbench is provided with a transverse feed assembly, which consists of a transverse guide rail 12 fixed on the gantry 5, a transverse slide seat 14 arranged on the transverse guide rail, a second motor 9 fixed on the gantry 5, and a first lead screw 10 with one end connected to the shaft of the second motor and the other end connected to the transverse slide seat 14. The transverse carriage 14 is fixed with a feed assembly, which consists of a vertical rail seat 17 fixed on the transverse carriage 14, a vertical rail seat 16, a vertical carriage 1 1 installed on the vertical rail, and a vertical rail seat fixed on the vertical rail seat/. A rotating shaft 8 installed in a shaft sleeve, a workpiece chuck 6 fixed at the lower end of the rotating shaft, a third motor 15 fixed on a vertical slide seat1,and a pair of gear pairs 13 respectively fixed on the rotating shaft 8 and the third motor, one end of which is connected with the fourth motor 19, and the other end is connected with the fourth motor19. Driven by the fourth motor 19, the second lead screw can drive the vertical slider 1 1 to move up and down along the vertical guide rail 16. The manipulator assembly is fixed on the vertical slide 1 1. The manipulator assembly includes a guide seat 27 fixed on the vertical slide 1 1, a carriage guide rail 26 fixed on the guide seat, a carriage 25 arranged on the carriage guide rail, a fifth motor 22 fixed on the guide seat 27, a third lead screw 23 with one end connected to the shaft of the fifth motor and the other end connected to the carriage 25, and a carriage 25 fixed on the carriage and extending downward below the workpiece chuck 6. The third lead screw 23 can drive the carriage 25 to move up and down along the carriage guide rail 26 under the drive of the fifth motor 22. [002 1] In order to operate flexibly, a counterweight mechanism is fixed on the transverse slide rail 14; The counterweight mechanism consists of a pulley frame 2 1 fixed on a transverse slide rail 14, two crown blocks 20 fixed on the pulley frame, and a rope 24 with a counterweight 33 fixed at one end and a vertical slide rail 1 1 fixed at the other end around the two crown blocks. In order to ensure the stable movement of the vertical rail seat 17, the lower end of the vertical rail seat is supported by the auxiliary rail 7 on the fixed portal frame 5. For safety, the cover 4 is fixed on the frame 1 to cover the cutter ring. When working, the bar (not shown in the figure) is clamped on the workpiece chuck 6, the mechanical arm 29 is adjusted by the fifth motor 22 (it is advisable that the bearing 30 just contacts the bar), and then the feed assembly and the mechanical arm assembly are lowered into the inner hole of the inner circular blade (not shown in the figure) by the fourth motor 19, and the first motor 3 1 and the third motor are started. When the inner circular blade cuts to the center of the rod core, the third motor 15 stops and the rod stops rotating. The inner circular blade cuts the bar, and the short cut bar is received by the bearing 30.
Claim 1. An internal circular cutting machine comprises a machine frame, a spindle assembly mounted on the machine frame, a workbench fixed on the machine frame, a transverse feeding assembly mounted on the workbench and a feeding assembly mounted on the transverse feeding assembly; Characterized in that the spindle assembly consists of a spindle (2) fixed on a machine frame (I), a cutter ring (3) fixed on the spindle and a first motor (3 1) for driving the spindle (2) to rotate; The workbench comprises a gantry (5) fixed on the frame (I) and spanning above the cutter ring (3); The transverse feed assembly consists of a transverse slide seat (14) installed on the gantry and a second motor (9) fixed on the gantry (5) and driven by a first lead screw (10) to move transversely; The feeding assembly consists of a vertical guide seat (17) fixed on a transverse slide seat (14), a vertical slide seat (1 1) installed on the vertical guide seat, a second screw (17) fixed on the vertical guide seat and a vertical slide seat (17) A third motor (1 1) composed of a shaft sleeve (28) is fixed on the vertical slide rail and drives the rotating shaft (8) to rotate through a traditional mechanism. The feeding assembly is provided with a manipulator assembly, which consists of a guide rail seat (27) fixed on a vertical slide seat (1 1), a carriage (25) mounted on the guide rail seat, and a fifth motor (22) fixed on the guide rail seat (27) and driven by a third lead screw (23) to move the carriage up and down.
2. The internal circular cutting machine according to claim 1 is characterized in that the transverse sliding plate (14) is provided with a counterweight mechanism, which consists of a pulley frame (2 1) fixed on the transverse sliding plate (14), two crown blocks (21) fixed on the pulley frame.
3. The internal circular cutting machine according to claim 1 or 2, characterized in that the lower end of the vertical guide rail seat (17) is supported by the auxiliary guide rail (7) on the fixed gantry (5).
The utility model discloses an inner circle cutting machine, which belongs to hard and brittle crystal material cutting equipment. It aims to provide a hard and brittle crystal material cutting device with large processing size range, high cutting efficiency and long blade life. It comprises a frame, a spindle assembly, a workbench, a transverse feeding assembly and a feeding assembly; The spindle assembly consists of a spindle (2) and a first motor (3 1); The workbench consists of a gantry (5); The transverse feed assembly consists of a slide seat (14), a first lead screw (10) and a second motor (9); The feeding assembly consists of a vertical guide seat (17), a vertical slide seat (1 1), a second lead screw (18), a fourth motor (19), a rotating shaft (8), a workpiece chuck (6) and a third one. The feeding assembly is provided with a manipulator assembly, which consists of a guide rail seat (27), a slide plate (25), a third lead screw (23), a fifth motor (22), a mechanical arm (29) and a bearing (30).
The file number is b28d1/24gk202480261sq20122004181.
The publication date is 2012 10/October10, the application date is 201February 9, and the priority date is 201February 9.
Inventor Tao Dehua Applicant: Guizhou Hualong Electronic Equipment Co., Ltd.