An inner hole processing jig for super high hardness material

Abstract

The present application belongs to the technical field of metal material processing, and particularly relates to an ultra-high hardness material inner hole processing jig, which comprises a rack and a first air cylinder arranged on the top of the rack, the moving end of the first air cylinder is provided with a first motor and a polishing rod, the polishing rod is fixedly arranged on the output end of the first motor, and the present application further comprises: a workbench, which is fixedly arranged on the bottom of the rack and is provided with an extending hole in the center of the upper surface of the workbench; and two second air cylinders, the present application protects the cutting edge of the tool through a cutting edge protection mechanism and a metal particle magnetic attraction mechanism to prevent the cutting edge from being scratched by debris and metal particles, the clamping force is accurately controlled through a clamping force detection mechanism to avoid damaging the tool, the tool is prevented from being damaged due to excessive extrusion force during the polishing process, the automatic measurement feeding mechanism can automatically measure the moving distance of the polishing rod, and the operation is facilitated, the overall processing quality and efficiency are improved, and the tool machining precision and the later use performance are guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metal material processing, and particularly relates to an inner hole machining jig for super-high-hardness material. BACKGROUND

[0002] Hard alloy cutters play a key role in various precision machining fields due to their high hardness, wear resistance and good cutting performance. In order to ensure that the hard alloy cutters can be stably installed with cutter handles, inner hole polishing devices need to be used for processing and handling, for example, the application number CN216462972U discloses an inner hole machining jig for super-high-hardness material.

[0003] However, when polishing the inner hole of the hard alloy cutter, the cutting edge of the hard alloy cutter is directly exposed, and debris and fine metal particles will be generated during the polishing process. The high-speed friction between the polishing head and the inner hole of the cutter will generate strong airflow, which will carry the debris and metal particles to the cutting edge. The debris and metal particles may also be hit at high speed by the splashing of the cooling liquid. Since the debris and metal particles are extremely hard and have sharp shapes, they will scratch the cutting edge surface, making the originally smooth and sharp cutting edge surface rough and rough, which will greatly reduce the surface quality of the processed workpiece. In addition, since the polishing rod of the polishing device is locally attached to the inner hole surface for polishing, it is easy to cause local excessive extrusion force on the clamped and fixed hard alloy cutter. If the polishing rod continuously advances with a large moving distance, local extrusion damage will occur to the hard alloy cutter.

[0004] Therefore, an inner hole machining jig for super-high-hardness material is provided. SUMMARY

[0005] The purpose of the present application is to provide an inner hole machining jig for super-high-hardness material to solve the above problems.

[0006] To achieve the above purpose, the following technical scheme is adopted: an inner hole machining jig for super-high-hardness material, comprising a rack and a first air cylinder arranged on the top of the rack, a first motor and a polishing rod are arranged on the moving end of the first air cylinder, the polishing rod is fixedly arranged on the output end of the first motor, and further comprising:

[0007] A workbench is fixedly arranged on the bottom of the rack, and a penetrating hole is arranged at the center of the upper surface of the workbench;

[0008] Two second air cylinders are arranged on the upper surface of the workbench with the penetrating hole as the center of symmetry, the moving end of each second air cylinder is fixedly provided with a connecting frame, and a cutter clamping plate is fixedly arranged on each connecting frame;

[0009] Multiple blade protection mechanisms are respectively disposed at both ends of each of the aforementioned blade clamping plates;

[0010] A clamping force detection mechanism is disposed on the side wall of one of the tool clamping plates;

[0011] The second motor is fixedly mounted on the moving end of the first cylinder, and the output shaft of the second motor is fixedly provided with a mounting plate.

[0012] An automatic measuring and feeding mechanism is disposed on the lower surface of the mounting plate, and the first motor is disposed at the bottom of the automatic measuring and feeding mechanism;

[0013] A cooling mechanism is mounted on the mounting plate;

[0014] The PLC controller is fixedly installed on the inner wall of one side of the frame. The first cylinder, the first motor, the second cylinder, the blade protection mechanism, the clamping force detection mechanism, the second motor, the automatic measuring feeding mechanism, and the cooling mechanism are all electrically connected to the PLC controller.

[0015] Preferably, the blade protection mechanism includes blade protection covers fixedly disposed at both ends of the two blade clamping plates, and two adjacent blade protection covers can cover the blade of the blade, and the side walls of the multiple blade protection covers are provided with metal particle magnetic attraction mechanisms.

[0016] Preferably, the metal particle magnetic attraction mechanism includes a PVC isolation sleeve that contacts the side wall of the blade guard. The PVC isolation sleeve has an electromagnetic block inside. One side of the electromagnetic block is bonded to the side wall of the blade guard with an adhesive layer. The side wall of the PVC isolation sleeve is fixedly provided with an installation ring, and the installation ring has an installation bolt that is threaded to the surface of the blade guard.

[0017] Preferably, the clamping force detection mechanism includes a pressure sensor, the side wall of the tool clamping plate is provided with a sliding groove, and a sliding block is provided inside the sliding groove. One side of the sliding block is fixedly connected to the pressure sensor, and a spring is fixedly provided between the other side of the sliding block and the side wall of the sliding groove. Limiting blocks are fixedly provided on both sides of the sliding block, and limiting grooves that cooperate with the sliding block are provided on both sides of the sliding groove.

[0018] Preferably, the automatic measuring and feeding mechanism includes a third cylinder fixedly disposed on the lower surface of the mounting plate, a slide block fixedly disposed at the moving end of the third cylinder, a slide rod fixedly disposed on the lower surface of the mounting plate and slidingly engaged with the slide block, a second motor fixedly disposed at the bottom of the slide block, a conductive ring fixedly disposed at the top of the slide block, a resistance rod fixedly disposed inside the mounting plate, and the conductive ring and the resistance rod being slidably connected.

[0019] Preferably, the cooling mechanism includes a coolant storage tank fixedly mounted on the upper surface of the mounting plate, a liquid pump fixedly mounted inside the coolant storage tank, a downwardly extending liquid supply hose fixedly mounted at the outlet of the liquid pump, a fixing strip fixedly mounted at the bottom of the slide, a coolant nozzle fixedly mounted at the bottom of the fixing strip, and the coolant nozzle fixedly connected to the liquid supply hose.

[0020] Preferably, an infrared generator is fixedly mounted on the side wall of the mounting plate, and an infrared receiver is fixedly mounted on the inner wall of one side of the frame. The infrared generator and the infrared receiver are located on the same horizontal line, and both the infrared generator and the infrared receiver are electrically connected to the PLC controller.

[0021] Preferably, the workbench has a hollow structure, and a drain pipe is fixedly provided on the side wall of the workbench, and the drain pipe wall is provided with a switch valve.

[0022] Compared with existing technologies, the advantages of this invention are as follows:

[0023] 1. Through the set blade protection mechanism, metal particle magnetic attraction mechanism, and clamping force detection mechanism, the second cylinder drives the tool clamping plate to move. When the rhomboid carbide tool is clamped, the blade protection mechanism can cover the tool blade; at the same time, the metal particle magnetic attraction mechanism can attract debris and metal particles that may damage the blade, effectively protecting the blade and ensuring the accuracy of the tool in later use; in addition, the clamping force detection mechanism can accurately control the clamping force of the tool clamping plate to prevent excessive clamping force from damaging the tool, and the clamping force detection mechanism and the metal particle magnetic attraction mechanism work together to automatically control the opening of the metal particle magnetic attraction mechanism.

[0024] 2. Through the set automatic measuring and feeding mechanism, the automatic measuring and feeding mechanism can automatically control the movement distance of the grinding rod, so that the grinding rod can move and grind the inner hole of the rhombic carbide tool multiple times. Moreover, the automatic measuring and feeding mechanism works in conjunction with the clamping force detection mechanism to monitor the extrusion pressure in real time during the grinding process. When the extrusion pressure is too high, the PLC controller will stop the relevant equipment in time to avoid excessive pressure damage to the inner wall of the rhombic carbide tool caused by the excessive movement distance of the grinding rod. At the same time, the automatic measuring and feeding mechanism can automatically measure the movement distance of the grinding rod, which makes it convenient for the staff to observe and control the grinding process.

[0025] 3. With the infrared generator and receiver installed, when the second motor drives the mounting plate to rotate, and the infrared generator and receiver are aligned, the receiver converts the signal into an electrical signal and feeds it back to the PLC controller, controlling the second motor to stop working, thus achieving the initial positioning of the grinding rod. Then, through the coordinated action of the first and third cylinders, the grinding rod is accurately positioned at the center of the inner hole, completing the secondary positioning of the grinding rod. This ensures that the grinding rod can determine the magnitude of the extrusion force on its first contact with the inner hole of the diamond-shaped carbide tool, and adjust accordingly, thereby improving the efficiency of the grinding process. Attached Figure Description

[0026] Figure 1 This is a perspective view of a machining fixture for the inner hole of an ultra-high hardness material provided by the present invention;

[0027] Figure 2 This is a plan view of a machining fixture for internal holes of ultra-high hardness materials provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the second cylinder, connecting frame, tool clamping plate and blade protection mechanism of the machining fixture for inner holes of ultra-high hardness materials provided by the present invention;

[0029] Figure 4 This is a perspective view of a metal particle magnetic attraction mechanism for a machining fixture for inner holes of ultra-high hardness materials provided by the present invention;

[0030] Figure 5 This is a cross-sectional view of the second cylinder, connecting frame, tool clamping plate and blade protection mechanism of a machining fixture for inner holes of ultra-high hardness materials provided by the present invention;

[0031] Figure 6 This is a schematic diagram of the clamping force detection mechanism for a machining fixture for inner holes of ultra-high hardness materials provided by the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the second motor, mounting plate, automatic measurement and feeding mechanism and cooling mechanism of the machining fixture for inner holes of ultra-high hardness materials provided by the present invention.

[0033] In the diagram: 1. Frame, 2. First cylinder, 3. First motor, 4. Grinding rod, 5. Worktable, 6. Insertion hole, 7. Second cylinder, 8. Connecting frame, 9. Tool clamping plate, 10. Blade protection mechanism, 101. Blade protection cover, 102. Metal particle magnetic attraction mechanism, 103. PVC isolation sleeve, 104. Electromagnetic block, 105. Adhesive bonding layer, 106. Mounting ring, 107. Mounting bolt, 11. Clamping force detection mechanism, 111. Pressure sensor, 112. Sliding block, 1 13 Spring, 114 Limiting block, 12 Second motor, 13 Mounting plate, 14 Automatic measuring and feeding mechanism, 141 Third cylinder, 142 Slide block, 143 Slide rod, 144 Conductive ring, 145 Resistance rod, 15 Cooling mechanism, 151 Coolant storage tank, 152 Liquid pump, 153 Liquid supply hose, 154 Fixing strip, 155 Coolant nozzle, 16 PLC controller, 17 Infrared generator, 18 Infrared receiver, 19 Drain pipe. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] like Figures 1-7 The present invention discloses a machining fixture for internal holes of ultra-high hardness materials, comprising a frame 1 and a first cylinder 2 disposed on the top of the frame 1. The moving end of the first cylinder 2 is provided with a first motor 3 and a grinding rod 4, and the grinding rod 4 is fixedly disposed at the output end of the first motor 3. The fixture also includes:

[0036] The worktable 5 is fixedly installed at the bottom of the frame 1, and an insertion hole 6 is provided at the center of the upper surface of the worktable 5. The worktable 5 adopts a hollow structure, and a drain pipe 19 is fixedly installed on the side wall of the worktable 5. A switch valve is provided on the pipe wall of the drain pipe 19. After the coolant cools the surface of the rhomboid carbide tool, it will be automatically collected inside the worktable 5 through the insertion hole 6. When the coolant storage inside the worktable 5 reaches a certain amount, the switch valve can be opened to discharge it through the drain pipe 19.

[0037] Two second cylinders 7 are arranged on the upper surface of the worktable 5 with the insertion hole 6 as the center of symmetry. The moving ends of the two second cylinders 7 are fixedly provided with connecting frames 8, and tool clamping plates 9 are fixedly provided on the two connecting frames 8.

[0038] Multiple blade protection mechanisms 10 are respectively disposed at both ends of each tool clamping plate 9. Each blade protection mechanism 10 includes a blade protection cover 101 fixedly disposed at both ends of the two tool clamping plates 9. Two adjacent blade protection covers 101 can cover the blade. The side walls of the multiple blade protection covers 101 are provided with metal particle magnetic attraction mechanisms 102. Each metal particle magnetic attraction mechanism 102 includes a PVC isolation sleeve 103 that contacts the side wall of the blade protection cover 101. The PVC isolation sleeve 103 has an electromagnetic block 104 inside. An adhesive layer 105 is provided between one side of 104 and the side wall of the blade guard 101. An installation ring 106 is fixedly provided on the side wall of the PVC isolation sleeve 103, and an installation bolt 107 is provided inside the installation ring 106 that is threaded to the surface of the blade guard 101. When the power supply of the solenoid block 104 is turned on, the solenoid block 104 generates its own magnetic force after the current is applied, so that the surface of the PVC isolation sleeve 103 has magnetic force and can attract metal particles. When disassembly is required, the installation bolt 107 can be loosened by wrench.

[0039] A clamping force detection mechanism 11 is installed on the side wall of one of the tool clamping plates 9. The clamping force detection mechanism 11 includes a pressure sensor 111. The side wall of the tool clamping plate 9 is provided with a sliding groove, and a sliding block 112 is provided inside the sliding groove. One side of the sliding block 112 is fixedly connected to the pressure sensor 111, and a spring 113 is fixedly provided between the other side of the sliding block 112 and the side wall of the sliding groove. Limiting blocks 114 are fixedly provided on both sides of the sliding block 112. Limiting grooves that cooperate with the sliding block 112 are provided on both sides of the sliding groove, which play a role in sliding limit. When the tool clamping plate 9 contacts the side wall of the rhombic carbide tool, the pressure sensor 111 will also contact the side wall of the rhombic carbide tool, so that the sliding block 112 moves inside the sliding groove and compresses the spring 113, so that the pressure sensor 111 has the function of elastic extension and contraction, avoiding the phenomenon of squeezing damage to the pressure sensor 111. The pressure sensor 111 can detect the magnitude of the squeezing force in real time.

[0040] The second motor 12 is fixedly mounted on the moving end of the first cylinder 2. The output shaft of the second motor 12 is fixedly mounted on the mounting plate 13. The operation of the second motor 12 can drive the mounting plate 13 to rotate.

[0041] An automatic measuring feed mechanism 14 is disposed on the lower surface of the mounting plate 13. A first motor 3 is disposed at the bottom of the automatic measuring feed mechanism 14. The automatic measuring feed mechanism 14 includes a third cylinder 141 fixedly disposed on the lower surface of the mounting plate 13. A slide block 142 is fixedly disposed at the moving end of the third cylinder 141. A slide rod 143 that slides and engages with the slide block 142 is fixedly disposed on the lower surface of the mounting plate 13. A second motor 12 is fixedly disposed at the bottom of the slide block 142. A conductive ring 144 is fixedly disposed at the top of the slide block 142. A resistance rod 145 is fixedly disposed inside the mounting plate 13. The conductive ring 144 is slidably connected to the resistance rod 145. When the third cylinder 141 extends, it drives the slide block 142, the first motor 3 and the grinding rod 4 to move synchronously, so that the wall of the high-speed rotating grinding rod 4 contacts the inner hole side wall of the rhomboid carbide tool. At the same time, during the movement of the slide block 142, it drives the conductive ring 144 to slide on the resistance rod 145, so that the resistance value of the resistance rod 145 connected in the circuit is reduced.

[0042] The cooling mechanism 15 is mounted on the mounting plate 13 and located on one side of the grinding rod 4. The cooling mechanism 15 includes a coolant storage tank 151 fixedly mounted on the upper surface of the mounting plate 13. A liquid pump 152 is fixedly installed inside the coolant storage tank 151. A downward-extending liquid supply hose 153 is fixedly installed at the outlet of the liquid pump 152. A fixing strip 154 ​​is fixedly installed at the bottom of the slide 142. A coolant nozzle 155 is fixedly installed at the bottom of the fixing strip 154. The coolant nozzle 155 is fixedly connected to the liquid supply hose 153. When the liquid pump 152 is working, it can draw out the coolant inside the coolant storage tank 151 and spray it onto the surface of the rhombic carbide tool through the liquid supply hose 153 and the coolant nozzle 155, which can cool the rhombic carbide tool.

[0043] The PLC controller 16 is fixedly installed on the inner wall of one side of the frame 1. The first cylinder 2, the first motor 3, the second cylinder 7, the blade protection mechanism 10, the clamping force detection mechanism 11, the second motor 12, the automatic measuring feeding mechanism and the cooling mechanism 15 are all electrically connected to the PLC controller 16.

[0044] An infrared generator 17 is fixedly mounted on the side wall of the mounting plate 13, and an infrared receiver 18 is fixedly mounted on the inner wall of one side of the frame 1. The infrared generator 17 and the infrared receiver 18 are located on the same horizontal line. Both the infrared generator 17 and the infrared receiver 18 are electrically connected to the PLC controller 16. When the infrared generator 17 rotates and aligns with the position of the infrared receiver 18, the infrared beam emitted by the infrared generator 17 can be received by the infrared receiver 18, and the infrared receiver 18 converts this infrared signal into an electrical signal.

[0045] The operating principle of this invention is described as follows: The operator first places the rhombic carbide tool to be machined on the surface of the machining table, aligning the center of the inner hole of the rhombic carbide tool with the center of the insertion hole 6. Then, the operator manually operates the PLC controller 16, which controls two second cylinders 7 to work. When the two second cylinders 7 extend, they synchronously drive the two tool clamping plates 9 to move, causing the two tool clamping plates 9 to contact and clamp the sides of the rhombic carbide tool. [Because the tool clamping plate 9 uses a curved portion, and the curved shape of the tool clamping plate 9 matches the side wall of the rhombic carbide tool, it ensures that the rhombic carbide tool is firmly clamped. At the same time, the length of the tool clamping plate 9 is less than the length of the rhombic carbide tool, avoiding contact between the tool clamping plate 9 and the cutting edge of the rhombic carbide tool and preventing crushing.] The tool clamping plate 9, in contact with the rhombic carbide tool... When the sidewall is in contact, the pressure sensor 111 will also contact the sidewall of the rhombic carbide tool. The pressure sensor 111 can detect the magnitude of the extrusion force in real time. [The pressure sensor 111 is based on the piezoresistive effect. Its elastic sensitive element deforms under pressure, causing the resistance of the strain gauge to change. The change in resistance is converted into an electrical signal output through a Wheatstone bridge. The magnitude of this electrical signal is proportional to the measured pressure and is transmitted to the PLC controller 16 after amplification.] As the second cylinder 7 continues to extend, the extrusion force between the tool clamping plate 9 and the rhombic carbide tool gradually increases. At this time, the pressure value of the pressure sensor 111 also gradually increases. When the pressure value detected by the pressure sensor 111 reaches the threshold preset inside the PLC controller 16, the PLC controller 16 will automatically control the second cylinder 7 to stop, complete the clamping action, and the center of the inner hole of the rhombic carbide tool and the center of the insertion hole 6 will automatically coincide.

[0046] During the clamping process, the blade guards 101 at both ends of the tool clamping plate 9 will move synchronously, so that the two adjacent blade guards 101 cooperate to cover the two blades of the rhombic carbide tool, which can protect the blades of the rhombic carbide tool. When the second cylinder 7 stops clamping, the PLC controller 16 will connect the power supply of the solenoid block 104 through the control circuit, so that the solenoid block 104 generates magnetic force after the current is applied.

[0047] When the second cylinder 7 stops clamping, the PLC controller 16 will also simultaneously start the second motor 12, infrared generator 17 and infrared receiver 18. The second motor 12 drives the mounting plate 13 and the first motor 3 and grinding rod 4 below it to rotate slowly [the second motor 12 is a geared motor]. During the slow rotation of the mounting plate 13, the infrared generator 17 will rotate together. When the infrared generator 17 rotates and is aligned with the position of the infrared receiver 18, the infrared beam emitted by the infrared generator 17 can be received by the infrared receiver 18. The infrared receiver 18 converts this infrared signal into an electrical signal. After amplification and filtering, this electrical signal is sent to the PLC controller 16, so that the PLC controller 16 immediately controls the second motor 12 to stop working. At this time, the grinding rod 4 is just rotated to the position above the clamping force detection mechanism 11, thus completing the initial positioning setting of the grinding rod 4.

[0048] When the PLC controller 16 receives the electrical signal from the infrared receiver 18, it immediately controls the first cylinder 2, the third cylinder 141, and the first motor 3 to work synchronously. This causes the first cylinder 2 to extend, pulling the grinding rod 4 below the mounting plate 13 downwards. Simultaneously, it controls the third cylinder 141 to retract, causing the slide block 142, the first motor 3, and the grinding rod 4 to move synchronously. When the third cylinder 141 is fully retracted, the grinding rod 4 is positioned directly above the center of the inner hole of the rhomboid carbide tool and the center of the insertion hole 6. The operation of machine 3 can drive the grinding rod 4 to rotate at high speed [the first motor 3 is a high-speed rotary motor], until the rotating grinding rod 4 moves to the center of the inner hole of the rhomboid carbide tool under the action of the first cylinder 2, thus completing the secondary positioning of the grinding rod 4 [since the stroke distance of the third cylinder 141 is less than the stroke distance of the first cylinder 2, when the third cylinder 141 finishes its retraction action, the first cylinder 2 is still in the process of extending, so there will be no situation where the lower end of the grinding rod 4 collides with the surface of the rhomboid carbide tool];

[0049] After the grinding rod 4 is positioned, the operator manually operates the PLC controller 16 to start the third cylinder 141 and the second motor 12. The third cylinder 141 extends, driving the slide 142, the first motor 3, and the grinding rod 4 to move synchronously, so that the wall of the high-speed rotating grinding rod 4 contacts the inner wall of the diamond-shaped carbide tool for grinding. [The third cylinder 141 is a high-precision cylinder, which can accurately control the moving distance of the grinding rod 4, and the extension distance of the third cylinder 141 is intermittent, with each movement distance preset in the internal program of the PLC controller 16]. During the movement, the slide 142 drives the conductive ring 144 to slide on the resistor rod 145, reducing the resistance of the resistor rod 145 connected in the circuit. At the same time, a measuring circuit is connected to both ends of the resistor rod 145 to detect the change in the current at both ends of the resistor rod 145 and convert it into an electrical signal. This electrical signal is then processed... The signal is amplified and filtered before being sent to the PLC controller 16. [During the process of receiving the feedback electrical signal, the internal program of the PLC controller 16 can programmatically set the linear proportional relationship between the current value and the moving distance of the conductive ring 144. For example, within the range of 10 mA to 20 mA, the PLC controller 16 will display on the screen that the moving distance of the conductive ring 144 is 0.2 mm to 0.5 mm.] This allows the automatic measurement of the moving distance of the grinding rod 4, which is convenient for the operator to observe at any time. The second motor 12 can drive the first motor 3 and the grinding rod 4 to rotate slowly, so that the grinding rod 4 rotates circumferentially against the inner hole sidewall of the rhomboid carbide tool and completes the grinding operation. After the inner hole of the rhomboid carbide tool has been ground for one revolution, the operator manually operates the PLC controller 16 to control the third cylinder 141 to extend and extend again for grinding.

[0050] During the grinding process, the PLC controller 16 will automatically activate the coolant pump 152. The pump 152 draws coolant from the coolant storage tank 151 and sprays it onto the surface of the rhombic carbide cutting tool through the supply hose 153 and coolant nozzle 155. This cools the tool and prevents the high temperatures generated during grinding from affecting it. Simultaneously, grinding generates chips and metal particles, which may splash with the airflow and coolant. The blade guard 101 can then isolate and protect the blade. There will be a gap between the cover 101 and the blade. In order to prevent metal particles from entering the surface of the blade through the gap, the solenoid block 104 generates a magnetic force after being energized, which causes the PVC isolation sleeve 103 to also generate a magnetic force and attract the metal particles to its own surface. This prevents the metal particles from entering through the gap between the blade protection cover 101 and the blade. After processing is completed, the power supply of the solenoid block 104 is turned off, and the metal particles on the surface of the PVC isolation sleeve 103 can be automatically removed for easy cleaning. This avoids the phenomenon of debris and metal particles scratching and damaging the blade, and ensures the accuracy of the diamond-shaped carbide tool in the later use.

[0051] During the grinding process, the grinding rod 4 experiences localized compression with the inner wall of the diamond-shaped carbide tool. If the preset movement distance of the grinding rod 4 is large, the compression force will increase. When the compression force increases excessively, it can easily cause compression damage to the diamond-shaped carbide tool. At this time, the pressure sensor 111 can detect the magnitude of the compression force in real time and feed it back to the PLC controller 16. Once the pressure value detected by the pressure sensor 111 reaches the preset threshold inside the PLC controller 16 (this threshold is different from the clamping action threshold; it consists of two thresholds set inside the PLC controller 16), the grinding rod 4, after initial and secondary positioning, achieves the smallest distance between itself and the tool clamping plate 9. Therefore, the compression force between the grinding rod 4 and the tool clamping plate 9 on the diamond-shaped carbide tool is maximized. If the pressure generated by the contact between the inner hole of the rhombic carbide tool and the pressure sensor 111 does not trigger the threshold of the pressure sensor, it indicates that the movement distance of the grinding rod 4 is within a reasonable range. When grinding other parts of the inner hole of the rhombic carbide tool, the threshold of the pressure sensor 111 will also be triggered. If the pressure triggers the threshold of the pressure sensor 111, it indicates that the movement distance of the grinding rod 4 is too large. The PLC controller 16 will immediately stop the operation of the third cylinder 141, the first motor 3 and the second motor 12, and remind the operator to reset the movement distance of the grinding rod 4. After the movement distance is adjusted appropriately, the grinding will continue until the inner hole of the rhombic carbide tool is completely ground. Finally, the PLC controller 16 will control the grinding rod 4 to move upward, stop the operation of the relevant equipment, and release the clamp on the rhombic carbide tool, allowing the rhombic carbide tool to be removed.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An inner hole processing jig for super high hardness material, comprising a frame (1) and a first air cylinder (2) arranged on the top of the frame (1), a moving end of the first air cylinder (2) is provided with a first motor (3) and a polishing rod (4), the polishing rod (4) is fixedly arranged on the output end of the first motor (3), characterized in that, Also include: Workbench (5) is fixedly arranged at the bottom of the rack (1), and the upper surface of the workbench (5) is provided with an extension hole (6) at the center; Two second air cylinders (7) are arranged on the upper surface of the workbench (5) with the extension hole (6) as the center of symmetry, and the moving end of each second air cylinder (7) is fixedly provided with a connecting frame (8), and the connecting frame (8) is fixedly provided with a tool clamping plate (9); A plurality of blade protection mechanisms (10) are arranged at both ends of each tool clamping plate (9), the blade protection mechanism (10) includes a blade protection cover (101) fixedly arranged at both ends of the tool clamping plate (9), adjacent two blade protection covers (101) can cover the tool blade, the side wall of the plurality of blade protection covers (101) is provided with a metal particle magnetic attraction mechanism (102), the metal particle magnetic attraction mechanism (102) includes a PVC isolation sleeve (103) arranged in contact with the side wall of the blade protection cover (101), the inside of the PVC isolation sleeve (103) is provided with a power-on magnetic block (104), one side of the power-on magnetic block (104) and the side wall of the blade protection cover (101) are provided with a glue bonding layer (105), the side wall of the PVC isolation sleeve (103) is fixedly provided with a mounting ring (106), and the inside of the mounting ring (106) is provided with a mounting bolt (107) threadedly connected with the surface of the blade protection cover (101), the tool clamping plate (9) adopts a bending part, and the bending shape of the tool clamping plate (9) matches the side wall of the rhombic hard alloy tool, the length of the tool clamping plate (9) is less than the length of the rhombic hard alloy tool; A clamping force detection mechanism (11) is arranged on the side wall of one of the tool clamping plates (9), the clamping force detection mechanism (11) includes a pressure sensor (111), the side wall of the tool clamping plate (9) is provided with a sliding groove, and the inside of the sliding groove is provided with a sliding block (112), one side of the sliding block (112) is fixedly connected with the pressure sensor (111), and the other side of the sliding block (112) is fixedly connected with the side wall of the sliding groove, the two sides of the sliding block (112) are fixedly provided with a limiting block (114), and the two sides of the sliding groove are provided with a limiting groove matched with the sliding block (112); A second motor (12) is fixedly arranged at the moving end of the first air cylinder (2), and the output shaft of the second motor (12) is fixedly provided with a mounting plate (13); An automatic measurement feeding mechanism (14) is arranged on the lower surface of the mounting plate (13), the first motor (3) is arranged at the bottom of the automatic measurement feeding mechanism (14), the automatic measurement feeding mechanism (14) comprises a third cylinder (141) fixedly arranged on the lower surface of the mounting plate (13), a sliding seat (142) is fixedly arranged on the moving end of the third cylinder (141), a sliding rod (143) which is in sliding fit with the sliding seat (142) is fixedly arranged on the lower surface of the mounting plate (13), the second motor (12) is fixedly arranged on the bottom of the sliding seat (142), a conductive ring (144) is fixedly arranged on the top of the sliding seat (142), and a resistance rod (145) is fixedly arranged in the mounting plate (13); the conductive ring (144) is in sliding connection with the resistance rod (145); A cooling mechanism (15) is arranged on the mounting plate (13); A PLC controller (16) is fixedly arranged on the inner wall of one side of the rack (1), the first cylinder (2), the first motor (3), the second cylinder (7), the blade protection mechanism (10), the clamping force detection mechanism (11), the second motor (12), the automatic measurement feeding mechanism (14) and the cooling mechanism (15) are electrically connected with the PLC controller (16), the automatic measurement feeding mechanism (14) and the clamping force detection mechanism (11) are cooperatively matched in the polishing process, the extrusion force can be monitored in real time, when the extrusion force is too large, the PLC controller (16) will immediately stop the third cylinder (141), the first motor (3) and the second motor (12) from working, and the moving distance of the polishing rod (4) is reset.

2. The ultra-hard material inner hole processing jig according to claim 1, wherein, The cooling mechanism (15) comprises a cooling liquid storage tank (151) fixedly arranged on the upper surface of the mounting plate (13), a liquid pumping pump (152) is fixedly arranged in the cooling liquid storage tank (151), a liquid supply hose (153) extending downward is fixedly arranged at the liquid outlet of the liquid pumping pump (152), a fixing strip (154) is fixedly arranged at the bottom of the sliding seat (142), and a cooling liquid spray head (155) is fixedly arranged at the bottom of the fixing strip (154) and fixedly connected with the liquid supply hose (153).

3. The ultra-hard material inner hole processing jig according to claim 1, wherein, An infrared ray generator (17) is fixedly arranged on the side wall of the mounting plate (13), an infrared ray receiver (18) is fixedly arranged on the inner wall of one side of the rack (1), the infrared ray generator (17) and the infrared ray receiver (18) are located on the same horizontal line, and the infrared ray generator (17) and the infrared ray receiver (18) are electrically connected with the PLC controller (16).

4. The ultra-hard material inner hole processing jig according to claim 1, wherein, The workbench (5) adopts a hollow structure, a drain pipe (19) is fixedly arranged on the side wall of the workbench (5), and a switch valve is arranged on the pipe wall of the drain pipe (19).

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