Precise grinding device for point of PCD turning tool and grinding method thereof

Abstract

The invention relates to the technical field of coping devices, in particular to an accurate coping device for a point of a PCD turning tool and a coping method.The accurate coping device comprises a mechanical arm and the PCD turning tool, the lower end of the mechanical arm is fixedly connected with a machine table assembly, a driving control assembly is installed at the position, close to the upper end, of the machine table assembly, and a stepping motor is fixedly connected to the top end of the driving control assembly; the tail end of a main shaft of the stepping motor is fixedly connected with a grinding control assembly, the outer side of the grinding control assembly is rotationally connected with the inner sides of a first shaft seat and a second shaft seat, the right end of the grinding control assembly is fixedly connected with a grinding wheel, and the grinding control assembly comprises a barrel shell, a first anti-twisting groove is formed in the inner side of the barrel shell, and a spring is fixedly connected to the position, close to the right end, of the barrel shell. According to the device, the grinding pressure is accurately controlled, flexible adjustment is conducted according to the requirements of PCD turning tools made of different materials, the problem that the grinding pressure is insufficient or too large is solved, the cutter grinding quality and precision are remarkably improved, and the machining efficiency and the surface quality are improved.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically to a precision grinding device and method for the tip of a PCD turning tool. Background Technology

[0002] PCD turning tools are turning tools made of polycrystalline diamond, an ultra-hard material formed by sintering a large number of tiny diamond crystals under high temperature and pressure. It possesses extremely high hardness and wear resistance, second only to single-crystal diamond. PCD turning tools are suitable for machining high-hardness, high-precision non-ferrous metal materials, such as aluminum alloys, copper alloys, and carbon fiber composites. They are widely used in aerospace, automotive manufacturing, and electronics industries. Due to their excellent wear resistance and cutting performance, PCD turning tools can achieve high-efficiency cutting while maintaining a long service life and good surface finish. The precision regrinding device for PCD turning tool tips is a specialized device for high-precision regrinding of PCD turning tool tips. It uses a CNC system to precisely control grinding parameters such as feed rate and rotation speed. Some devices are also equipped with audio sensors to monitor the grinding status in real time and automatically adjust the grinding process based on data changes. In addition, some devices employ special designs, such as radial and axial adjustment screws, to ensure the runout accuracy of the tool after clamping. These devices can be widely used in the automotive, aerospace and other fields, and can effectively improve tool life and machining quality. In the process of regrinding polycrystalline diamond (PCD) cutting tools, different materials of PCD cutting tools have different requirements for grinding pressure. These materials place high demands on the wear resistance and cutting performance of the tools. Therefore, during grinding, it is necessary to adjust the grinding force according to the hardness of the material and the specific machining requirements to ensure the cutting performance and service life of the tool. Grinding pressure has a significant impact on the grinding quality of PCD tools: if the grinding pressure is too low, it may lead to insufficient cutting depth of the abrasive grains, resulting in uneven wear of the abrasive grains, which will increase the frequency of tool dressing; while if the grinding pressure is too high, it may cause deformation of the tool surface, thereby affecting the geometric accuracy of the tool. If the grinding pressure cannot be accurately controlled according to the characteristics of different materials, the quality of regrinding will be significantly reduced. Therefore, to address the above problems, a precise regrinding device and method for PCD cutting tool tips are proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a precision grinding device and method for the tip of a PCD turning tool, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A precision grinding device for PCD turning tool tips includes a robotic arm and a PCD turning tool. A machine table assembly is fixedly connected to the lower end of the robotic arm. A drive control assembly is mounted near the upper end of the machine table assembly. A stepper motor is fixedly connected to the top of the drive control assembly. A grinding control assembly is fixedly connected to the end of the stepper motor spindle. A first bearing and a second bearing are rotatably connected to the outer side of the grinding control assembly. A grinding wheel is fixedly connected to the right end of the grinding control assembly. The grinding control assembly includes a cylindrical shell. A first anti-torsion groove is formed on the inner side of the cylindrical shell. A spring is fixedly connected to the right end of the cylindrical shell. A movable cylinder is fixedly connected to the left end of the spring. The movable cylinder and a guide plate are integrally fixed. A second anti-torsion groove is formed on the inner side of the movable cylinder. A solid column is slidably connected to the movable cylinder through the second anti-torsion groove. A fixed plate is fixedly connected to the left side of the solid column.

[0005] As a further optimization of the present invention, the bottom end of the robot arm is fixedly connected to the machine body, and a PCD turning tool is fixedly connected to the left end of the robot arm, with one side of the PCD turning tool in contact with the right side of the grinding wheel.

[0006] As a further optimization of the present invention, the machine tool assembly includes a machine tool body, a receiving groove is provided inside the machine tool body, a sliding groove is provided at the upper end of the machine tool body near the receiving groove, the receiving groove and the sliding groove are connected, and the sliding groove is fixedly connected to the built-in rod at the right end.

[0007] As a further optimization of the present invention, the machine body has a rotating groove on its inner side, a protective ring is rotatably connected to the inner side of the rotating groove, and an opening is provided near the lower end of the protective ring, the opening being connected to the receiving groove.

[0008] As a further optimization of the present invention, the drive control component includes a servo motor, a screw is fixedly connected to the end of the servo motor spindle, the housing of the servo motor is fixedly connected to the left side of the first base, the screw is rotatably connected to the inner side of the first base and the second base, and the inner side of the first base and the inner side of the second base are both fixedly connected to guide posts.

[0009] As a further optimization of the present invention, the screw is spirally connected to the inner side of the first bearing seat, the guide post is slidably connected to the first bearing seat and the second bearing seat, the screw is inserted into the interior of the second bearing seat, and the left side of the second base is in contact with the right side of the second bearing seat.

[0010] As a further optimization of the present invention, the bottom ends of the first base and the second base are both fixedly connected to the top end of the mounting plate. An internal rod is slidably connected to the inner side of the mounting plate. The left side of the internal rod is fixedly connected to the inner side of the slide groove. The left side of the mounting plate is fixedly connected to the piston rod of the electric telescopic rod. The cylinder of the electric telescopic rod is fixedly connected to the left side of the machine body.

[0011] As a further optimization of the present invention, the first and second bearings are both fixedly connected to the inner sides of the bearing, the bearing of the first bearing is fixedly connected to the left end of the rail plate, and the bearing of the second bearing is fixedly connected to the outer side of the cylinder shell.

[0012] As a further optimization of the present invention, the fixing plate is connected to the flange fixed to the end of the stepper motor spindle by bolts, and the right side of the cylinder shell is fixedly connected to the grinding wheel by bolts.

[0013] A method for regrinding the tip of a PCD turning tool using a precision regrinding device. Step 1: When adjusting the grinding force of the PCD cutting tool, the PCD cutting tool is fixed at the left end of the robot arm. The servo motor starts and drives the screw to rotate. The screw is rotatably connected to the inside of the first base and the second base through the bearing. The rotation of the screw drives the first shaft seat, which is helically connected on the outside, to move to the right. The first shaft seat is slidably connected to the outside of the guide post. When the first shaft seat moves, it drives the movable cylinder to move to the right. The first shaft seat is rotatably connected to the movable cylinder through the bearing. The inside of the movable cylinder slides on the outside of the solid column through the second anti-torsion groove. The outside of the movable cylinder slides inside the first anti-torsion groove opened in the cylinder shell through the rail plate. The cylinder shell rotates, the spring is compressed, and the length of the spring compression is controlled. The robot arm controls the PCD cutting tool to contact the grinding wheel. Step 2: When controlling the position of the grinding wheel according to the size of the PCD cutting tool, the electric telescopic rod drives the mounting plate to move. The piston rod of the electric telescopic rod moves inside the through hole at the left end of the machine body. The piston rod of the electric telescopic rod pushes the mounting plate to move. The mounting plate slides inside the built-in rod. The mounting plate moves inside the slide groove. The lower end of the through hole and the slide groove are fitted with a clearance. The mounting plate drives the fixed first base and second base to move. The stepper motor, the first shaft seat, the second shaft seat, the grinding control component and the grinding wheel move to the right or left. Step 3: During the grinding process, when the protective ring is in place, it rotates inside the groove. When the opening faces downward, the opening is connected to the receiving groove. The protective ring is fitted on the outside of the grinding wheel and the PCD cutting tool, and a layer of rubber is placed inside the protective ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting up a servo motor, screw, first shaft seat and grinding control components, the device can precisely control the grinding pressure and flexibly adjust the pressure according to the grinding requirements of PCD turning tools of different materials. This effectively avoids insufficient cutting depth of the abrasive grains due to insufficient grinding pressure, and excessive grinding pressure causing deformation of the tool surface, which in turn affects the geometric accuracy of the tool. This significantly improves the grinding quality and accuracy of PCD turning tools, and enhances processing efficiency and surface quality. It is especially suitable for high-precision tool regrinding. 2. In this invention, the device can flexibly adjust the position of the grinding wheel according to the size of the PCD turning tool by setting the mounting plate, built-in rod and electric telescopic rod. By precisely controlling the distance between the two, it can adapt to the grinding work of PCD turning tools of various sizes, improve the versatility and flexibility of the equipment, reduce the adjustment cost and time caused by changing different sizes of tools, and significantly improve production efficiency and the applicability of the equipment. 3. In this invention, the device effectively reduces the splashing of chips during grinding by setting up a protective ring, a through-hole, and a receiving groove, protecting workers from injury, and guiding the chips through a specific location to achieve centralized collection of chips, which facilitates later cleaning and significantly improves the safety and cleanliness of the working environment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the machine tool assembly structure of the present invention; Figure 3 This is a schematic diagram of the protective ring structure of the present invention; Figure 4 This is a schematic diagram of the stepper motor structure of the present invention; Figure 5 This is a schematic diagram of the grinding wheel structure of the present invention; Figure 6 This is a cross-sectional structural diagram of the grinding control component of the present invention; Figure 7 This is an exploded structural diagram of the grinding control component of the present invention; Figure 8 This is a schematic diagram of the machine body structure of the present invention.

[0016] In the diagram: 1. Robotic arm; 2. PCD turning tool; 3. Machine components; 31. Machine body; 32. Receiving groove; 33. Rotary groove; 34. Slide groove; 35. Protective ring; 36. Through port; 4. Drive control components; 41. Servo motor; 42. First base; 43. Guide column; 44. Screw; 45. Second base; 46. Mounting plate; 47. Built-in rod; 48. Electric telescopic rod; 5. Stepper motor; 6. First shaft mount; 7. Second shaft mount; 8. Grinding control assembly; 81. Cylinder shell; 82. First anti-torsion groove; 83. Spring; 84. Movable cylinder; 85. Rail plate; 86. Second anti-torsion groove; 87. Solid column; 88. Fixing plate; 9. Grinding wheel. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all 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.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Please see Figures 1-8 The present invention provides a technical solution: A precision grinding device and method for PCD turning tool tips includes a robotic arm 1 and a PCD turning tool 2. A machine table assembly 3 is fixedly connected to the lower end of the robotic arm 1. A drive control assembly 4 is installed near the upper end of the machine table assembly 3. A stepper motor 5 is fixedly connected to the top of the drive control assembly 4. A grinding control assembly 8 is fixedly connected to the end of the spindle of the stepper motor 5. A first bearing 6 and the inner side of a second bearing 7 are rotatably connected to the outer side of the grinding control assembly 8. A grinding wheel 9 is fixedly connected to the right end of the grinding control assembly 8. The grinding control assembly 8 includes a cylindrical shell 81. A first anti-torsion groove 82 is formed on the inner side of the cylindrical shell 81. A spring 83 is fixedly connected near the right end of the cylindrical shell 81. A movable cylinder 84 is fixedly connected to the left end of the spring 83. The movable cylinder 84 and a guide plate 85 are integrally fixed structures. A second anti-torsion groove 86 is formed on the inner side of the movable cylinder 84. A solid column 87 is slidably connected to the movable cylinder 84 through the second anti-torsion groove 86. A fixed plate 88 is fixedly connected to the left side of the solid column 87.

[0020] As a further implementation of this solution, the bottom end of the robot arm 1 is fixedly connected to the machine body 31. A PCD turning tool 2 is fixedly connected to the robot arm 1 near the left end. One side of the PCD turning tool 2 is in contact with the right side of the grinding wheel 9. Through the above settings, the position of the PCD turning tool 2 can be controlled to ensure stable contact between the PCD turning tool 2 and the grinding wheel 9, making the grinding process more precise and stable and improving the grinding quality. As a further implementation of this solution, the machine assembly 3 includes a machine body 31, with a receiving groove 32 on the inner side of the machine body 31 and a sliding groove 34 on the upper end of the machine body 31 near the receiving groove 32. The receiving groove 32 and the sliding groove 34 are connected. The sliding groove 34 is fixedly connected to the built-in rod 47 near the right end. Through the above arrangement, the connected design facilitates the collection and discharge of debris. The fixed connection between the built-in rod 47 and the sliding groove 34 enhances the stability of the structure, ensures the efficient operation of the debris collection system, and improves the cleanliness of the working environment. As a further implementation of this solution, a rotating groove 33 is provided on the inner side of the machine body 31. A protective ring 35 is rotatably connected to the inner side of the rotating groove 33. An opening 36 is provided near the lower end of the protective ring 35. The opening 36 is connected to the receiving groove 32. Through the above settings, the rotatable connection design of the protective ring 35 allows the protective cover to be adjusted as needed. The connection design between the opening 36 and the receiving groove 32 ensures that the debris can enter the collection device smoothly, effectively reducing debris splashing and protecting the safety of the staff. As a further implementation of this solution, the drive control component 4 includes a servo motor 41. A screw 44 is fixedly connected to the end of the spindle of the servo motor 41. The housing of the servo motor 41 is fixedly connected to the left side of the first base 42. The screw 44 is rotatably connected to the inner side of the first base 42 and the second base 45. The inner side of the first base 42 and the inner side of the second base 45 are both fixedly connected to the guide post 43. The outer side of the screw 44 is spirally connected to the inner side of the first shaft seat 6. The outer side of the guide post 43 is slidably connected to the first shaft seat 6 and the second shaft seat 7. The screw 44 is inserted into the interior of the second shaft seat 7. The left side of the second base 45 is in contact with the right side of the second shaft seat 7. Through the above settings, the adjustment of grinding pressure is more precise. The fixed connection between the first base 42 and the second base 45 enhances the stability of the structure and ensures the accuracy and reliability of the grinding process. As a further implementation of this solution, the bottom ends of the first base 42 and the second base 45 are both fixedly connected to the top end of the mounting plate 46. An internal rod 47 is slidably connected to the inner side of the mounting plate 46. The left side of the internal rod 47 is fixedly connected to the inner side of the slide groove 34. The left side of the mounting plate 46 is fixedly connected to the piston rod of the electric telescopic rod 48. The cylinder of the electric telescopic rod 48 is fixedly connected to the left side of the machine body 31. Through the above settings, the position of the grinding wheel 9 can be flexibly adjusted according to the size of the PCD cutting tool 2. The fixed connection between the piston rod of the electric telescopic rod 48 and the mounting plate 46 enhances the stability of the structure and improves the versatility and flexibility of the equipment. As a further implementation of this solution, bearings are fixedly connected to the inner sides of both the first bearing seat 6 and the second bearing seat 7. The bearing of the first bearing seat 6 is fixedly connected to the left end of the rail plate 85, and the bearing of the second bearing seat 7 is fixedly connected to the outer side of the cylinder shell 81. Through the above arrangement, the use of bearings reduces the friction between the movable cylinder 84 and the cylinder shell 81, improves the accuracy and flexibility of rotation, ensures the stability and reliability of the grinding process, and extends the service life of the equipment. As a further implementation of this solution, the fixing plate 88 is bolted to the flange fixed at the end of the stepper motor 5 spindle, and the right side of the cylinder shell 81 is bolted to the grinding wheel 9. Through the above settings, the bolted connection design makes the installation and disassembly of components more convenient, facilitates the maintenance and adjustment of the equipment, and improves the maintainability and reliability of the equipment.

[0021] Workflow: To adjust the grinding force of the PCD turning tool 2, the PCD turning tool 2 is fixed to the left end of the robot arm 1, and the position of the PCD turning tool 2 to be ground is brought close to the grinding wheel 9. Based on the grinding position of the PCD turning tool 2, the servo motor 41 is started. The servo motor 41 is electrically connected to the controller. The start of the servo motor 41 drives the screw 44 to rotate. The screw 44 is rotatably connected inside the first base 42 and the second base 45 via bearings. The rotation of the screw 44 drives the first shaft seat 6, which is helically connected on the outside, to move to the right. The first shaft seat 6 is slidably connected to the guide post 43. The outer side serves to guide the movement of the first shaft seat 6. When the first shaft seat 6 moves, it drives the movable cylinder 84 to move to the right. The first shaft seat 6 is rotatably connected to the movable cylinder 84 via a bearing, which not only controls the movement of the movable cylinder 84 but also does not obstruct its rotation. The inner side of the movable cylinder 84 slides on the outer side of the solid column 87 via the second anti-torsion groove 86, and the outer side of the movable cylinder 84 slides inside the first anti-torsion groove 82 opened in the cylinder shell 81 via the rail plate 85. This serves to limit the movement of the movable cylinder 84. Simultaneously, the cylinder shell 81, the movable cylinder 84, and the solid column... The design of the column 87 allows for the rotation of both the fixed plate 88 and the solid column 87, while simultaneously controlling the rotation of the cylindrical shell 81. When the movable cylinder 84 moves, it compresses the spring 83. According to Hooke's Law, within the elastic limit, the deformation, elongation, or compression of an elastic body such as the spring 83 is directly proportional to the external force acting upon it. By controlling the compression length of the spring 83, the elastic force of the spring 83 is controlled, which in turn controls the force with which the spring 83 pushes the cylindrical shell 81. During grinding, the robot arm 1 controls the PCD cutting tool 2 to contact the grinding wheel 9, and the movement range of the PCD cutting tool 2 is controlled to control the rotation of the cylindrical shell. The movement range of 81 causes the PCD cutting tool 2 to squeeze the grinding wheel 9. Under the action of the reaction force, the grinding wheel 9 drives the cylinder shell 81 and the second shaft seat 7 to move. The second shaft seat 7 slides outside the guide post 43. The cylinder shell 81 squeezes the spring 83, so that the spring 83 is squeezed within a certain compression range. This realizes the control of the grinding force of the grinding wheel 9 on the PCD cutting tool 2 according to the grinding position of the PCD cutting tool 2. This significantly reduces the insufficient cutting depth of the abrasive grains caused by improper control of the squeezing force, as well as the deformation of the tool surface caused by excessive grinding pressure, thus improving the accuracy of the cutting edge and the quality of grinding. When controlling the position of the grinding wheel 9 according to the size of the PCD turning tool 2, the electric telescopic rod 48 is activated to drive the mounting plate 46 to move. The piston rod of the electric telescopic rod 48 moves inside the through hole at the left end of the machine body 31. The piston rod of the electric telescopic rod 48 pushes the mounting plate 46 to move. The mounting plate 46 slides inside the built-in rod 47. At the same time, the mounting plate 46 moves inside the slide groove 34. The lower end of the through hole 36 and the slide groove 34 are in clearance fit. The mounting plate 46 drives the fixed first base 42 and second base 45 to move, thereby driving the stepper motor 5, the first spindle 6, the second spindle 7, the grinding control component 8 and the grinding wheel 9 to move to the right or left, thereby controlling the distance between the grinding wheel 9 and the PCD turning tool 2. It is suitable for grinding PCD turning tools 2 of various sizes. During the grinding process, the protective ring 35 is rotated inside the groove 33. When the opening 36 faces downward, it connects with the receiving groove 32. The protective ring 35 is fitted over the outside of the grinding wheel 9 and the PCD cutting tool 2. This ensures that the chips generated during grinding of the PCD cutting tool 2 come into contact with the inside of the protective ring 35. The protective ring 35 significantly reduces the risk of chip splashing and injury to workers. The protective ring 35 has a layer of rubber inside. When chips come into contact with the inside of the protective ring 35, the rubber cushions the chips, significantly reducing the risk of them splashing again due to the reaction force. This cushioning also allows the chips to fall through the opening 36 into the receiving groove 32 for collection and easy cleaning later.

[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 precision grinding device for the tip of a PCD turning tool, comprising a robotic arm (1) and a PCD turning tool (2), characterized in that: The lower end of the robotic arm (1) is fixedly connected to a machine table assembly (3). A drive control assembly (4) is installed near the upper end of the machine table assembly (3). A stepper motor (5) is fixedly connected to the top of the drive control assembly (4). A grinding control assembly (8) is fixedly connected to the end of the spindle of the stepper motor (5). A first bearing seat (6) and the inner side of a second bearing seat (7) are rotatably connected to the outside of the grinding control assembly (8). A grinding wheel (9) is fixedly connected to the right end of the grinding control assembly (8). The grinding control assembly (8) includes a cylindrical shell (81), a first anti-torsion groove (82) is provided on the inner side of the cylindrical shell (81), a spring (83) is fixedly connected to the cylindrical shell (81) near the right end, a movable cylinder (84) is fixedly connected to the left end of the spring (83), the movable cylinder (84) and the rail plate (85) are integrally fixed structures, a second anti-torsion groove (86) is provided on the inner side of the movable cylinder (84), a solid column (87) is slidably connected to the movable cylinder (84) through the second anti-torsion groove (86), and a fixing plate (88) is fixedly connected to the left side of the solid column (87).

2. The precision grinding device for the tip of a PCD turning tool according to claim 1, characterized in that: The bottom end of the robotic arm (1) is fixedly connected to the machine body (31). A PCD cutting tool (2) is fixedly connected to the left end of the robotic arm (1). One side of the PCD cutting tool (2) is in contact with the right side of the grinding wheel (9).

3. The precision grinding device for the tip of a PCD turning tool according to claim 1, characterized in that: The machine assembly (3) includes a machine body (31), a receiving groove (32) is provided on the inner side of the machine body (31), and a sliding groove (34) is provided on the upper end of the machine body (31) near the receiving groove (32). The receiving groove (32) and the sliding groove (34) are connected. The sliding groove (34) is fixedly connected to the built-in rod (47) near the right end.

4. The precision grinding device for the tip of a PCD turning tool according to claim 3, characterized in that: The machine body (31) has a rotating groove (33) on its inner side. A protective ring (35) is rotatably connected to the inner side of the rotating groove (33). A through-hole (36) is opened near the lower end of the protective ring (35). The through-hole (36) is connected to the receiving groove (32).

5. The precision grinding device for the tip of a PCD turning tool according to claim 1, characterized in that: The drive control component (4) includes a servo motor (41), and a screw (44) is fixedly connected to the end of the main shaft of the servo motor (41). The housing of the servo motor (41) is fixedly connected to the left side of the first base (42). The screw (44) is rotatably connected to the inner side of the first base (42) and the second base (45). The inner side of the first base (42) and the inner side of the second base (45) are both fixedly connected to the guide post (43).

6. The precision grinding device for the tip of a PCD turning tool according to claim 5, characterized in that: The outer side of the screw (44) is spirally connected to the inner side of the first bearing seat (6), and the outer side of the guide post (43) is slidably connected to the first bearing seat (6) and the second bearing seat (7). The screw (44) is inserted into the interior of the second bearing seat (7), and the left side of the second base (45) is in contact with the right side of the second bearing seat (7).

7. The precision grinding device for the tip of a PCD turning tool according to claim 5, characterized in that: The bottom ends of the first base (42) and the second base (45) are fixedly connected to the top end of the mounting plate (46). The mounting plate (46) has an internal rod (47) slidably connected to the inside. The left side of the internal rod (47) is fixedly connected to the inside of the slide groove (34). The left side of the mounting plate (46) is fixedly connected to the piston rod of the electric telescopic rod (48). The cylinder of the electric telescopic rod (48) is fixedly connected to the left side of the machine body (31).

8. The precision grinding device for the tip of a PCD turning tool according to claim 1, characterized in that: Bearings are fixedly connected to the inner sides of the first bearing (6) and the second bearing (7). The bearing of the first bearing (6) is fixedly connected to the left end of the rail plate (85), and the bearing of the second bearing (7) is fixedly connected to the outer side of the cylinder shell (81).

9. The precision grinding device for the tip of a PCD turning tool according to claim 1, characterized in that: The fixing plate (88) is connected to the flange fixed at the end of the main shaft of the stepper motor (5) by bolts, and the right side of the cylinder shell (81) is fixedly connected to the grinding wheel (9) by bolts.

10. A grinding method based on the precision grinding device for PCD turning tool tips according to any one of claims 1-9, characterized in that: Step 1: When adjusting the grinding force of the PCD turning tool (2), the PCD turning tool (2) is fixed at the left end of the robot (1). The servo motor (41) is started to drive the screw (44) to rotate. The screw (44) is rotatably connected to the inside of the first base (42) and the second base (45) through the bearing. The rotation of the screw (44) drives the first shaft seat (6) connected to the outside to move to the right. The first shaft seat (6) is slidably connected to the outside of the guide post (43). When the first shaft seat (6) moves, it drives the live... The moving cylinder (84) moves to the right, and the first shaft seat (6) is rotatably connected to the moving cylinder (84) through the bearing. The inner side of the moving cylinder (84) slides on the outer side of the solid column (87) through the second anti-torsion groove (86), and the outer side of the moving cylinder (84) slides inside the first anti-torsion groove (82) opened in the cylinder shell (81) through the rail plate (85). The cylinder shell (81) rotates, the spring (83) is compressed, and the length of the spring (83) is controlled. The robot arm (1) controls the PCD cutting tool (2) to contact the grinding wheel (9). Step 2: When controlling the position of the grinding wheel (9) according to the size of the PCD cutting tool (2), the electric telescopic rod (48) drives the mounting plate (46) to move. The piston rod of the electric telescopic rod (48) moves inside the through hole at the left end of the machine body (31). The piston rod of the electric telescopic rod (48) pushes the mounting plate (46) to move. The mounting plate (46) slides inside the built-in rod (47). The mounting plate (46) moves inside the slide groove (34). The lower end of the through hole (36) and the slide groove (34) are in clearance fit. The mounting plate (46) drives the fixed first base (42) and second base (45) to move. The stepper motor (5), the first shaft seat (6), the second shaft seat (7), the grinding control component (8) and the grinding wheel (9) move to the right or left. Step 3: When protection is applied during the grinding process, the protective ring (35) rotates inside the rotating groove (33). When the opening (36) faces downward, the opening (36) is connected to the receiving groove (32). The protective ring (35) is sleeved on the outside of the grinding wheel (9) and the PCD cutting tool (2). A layer of rubber is set inside the protective ring (35).

Images