Cubic boron nitride blade and negative chamfer automatic grinding machine tool

Abstract

The application relates to the technical field of intelligent equipment manufacturing, and discloses a cubic boron nitride blade and an automatic grinding machine for negative chamfering, wherein the cubic boron nitride blade grinding device comprises a tool holder used for grinding the cubic boron nitride blade, a negative chamfering drainage plate is arranged at the blade edge of the tool holder, a first protrusion and a second protrusion are symmetrically arranged on the two sides of the tool holder and are respectively arranged on the drainage plate, the first protrusion is located at the vertex position of the drainage plate, and the second protrusion is located between two adjacent first protrusions; and mounting holes are respectively arranged through the tool holder and the drainage plate and are used for mounting the blade. The negative chamfering designed at the blade edge of the cubic boron nitride blade can increase the wedge angle of the tool, change the straight blade into a surface blade, disperse the cutting force, reduce the direct stress on the blade edge, reduce the risk of blade collapse during intermittent cutting and powerful cutting, and avoid stress concentration at the microscopic gap of the blade edge and damage of the blade.

Description

Technical Field

[0001] This invention relates to the field of intelligent equipment manufacturing technology, specifically to cubic boron nitride cutting tools and automatic grinding machines for negative chamfering. Background Technology

[0002] Cubic boron nitride (CBN) inserts are superhard cutting tools synthesized artificially under high temperature and pressure using cubic boron nitride micro powder and a small amount of binder. With a hardness second only to diamond, they possess high wear resistance, good thermal stability, and chemical inertness. Commonly used for cutting ferrous metals, they come in welded composite and integral polycrystalline structures, driving a revolution in metal processing cutting technology and frequently used in turning.

[0003] For example, Chinese Patent CN101204738B discloses a turning tool and a turning insert, the turning insert having a basic triangular shape and being fixed in a tool holder in a base. This turning insert has three side surfaces located in an imaginary equilateral triangle and therefore converging in pairs at an angle of 60° toward the corner including the cutting edge.

[0004] However, existing turning tools still have some problems. Existing CBN inserts and cemented carbide inserts have poor toughness and low edge strength. Therefore, when performing turning work, the cutting force will be concentrated at the cutting edge in a straight line position. Especially under intermittent cutting, machining of hard materials or impact loads, micro-fractures or large-area damage are likely to occur, resulting in a significant reduction in tool life and thus damage to the insert.

[0005] Therefore, how to avoid damage to turning inserts is a problem that needs to be solved. Summary of the Invention

[0006] This invention provides cubic boron nitride cutting tools and an automatic negative chamfering grinding machine to solve the above-mentioned problems existing in the prior art.

[0007] Cubic boron nitride cutting tools, including:

[0008] A tool holder is used for turning parts, and the cutting edge of the tool holder is provided with a negative chamfer;

[0009] The deflector plates are symmetrically arranged on both sides of the tool holder to deflect the waste chips generated during the turning process;

[0010] A first protrusion and a second protrusion are respectively disposed on the drainage plate, with the first protrusion located at the apex of the drainage plate and the second protrusion located between two adjacent first protrusions;

[0011] Mounting holes penetrate the blade holder and the guide plate respectively, and are used to install the blade.

[0012] A kind of automatic grinding machine for negative chamfer of cubic boron nitride blade;

[0013] The negative chamfer automatic grinding machine includes a worktable, a grinding unit disposed on the worktable for negative chamfer grinding work of the blade;

[0014] A water injection unit is disposed on the worktable for cutting fluid injection work of the blade during grinding work;

[0015] The water injection unit includes a base disposed on the worktable, a support frame connected to the base, a transmission shaft disposed on the support frame, a first helical gear sleeved on the transmission shaft, an input assembly meshing with the first helical gear, a driven wheel disposed at one end of the transmission shaft, an injection assembly connected to the other end of the transmission shaft, and a water outlet pipe in communication with the injection assembly;

[0016] The grinding unit is connected to the driven wheel, and the spraying amount and speed of the cutting fluid sprayed on the surface of the blade are adjusted according to the grinding rate of the grinding unit, so that the injection amount of the cutting fluid can be adjusted in real time according to the grinding rate;

[0017] The adjustment unit is a prior art, which includes at least one set of mutually perpendicular lead screw linear motion mechanisms, and an adjustment seat disposed on the lead screw linear motion mechanisms. The adjustment motor and the worm gear are both disposed on the adjustment seat. The placement disc is provided with a suction cup or a jaw, and the suction cup and the jaw cooperate to complete the adsorption and fixation of the blade, ensuring the smooth progress of the grinding work.

[0018] Further, the grinding unit includes a grinding device, a clamping device, and a robot disposed on the worktable;

[0019] The grinding device includes a grinding motor fixedly installed on the worktable, a grinding shaft connected to the output end of the grinding motor, a driving wheel sleeved on the grinding shaft, and a grinding wheel disposed on the grinding shaft;

[0020] The clamping device includes an adjustment unit fixedly installed on the worktable, an adjustment motor disposed on the adjustment unit, a worm connected to the output end of the adjustment motor, a worm gear connected to the worm and disposed on the adjustment unit, and a placement disc disposed on the worm gear;

[0021] The driving wheel and the driven wheel are connected through a chain;

[0022] The chain is provided, so that the grinding motor can drive the water delivery assembly and the injection assembly to move, thereby adjusting the injection amount of the cutting fluid.

[0023] Further, the input assembly comprises a support rod and a rotating shaft arranged on the support frame respectively, an adjusting part arranged on the rotating shaft, a first driving rod movably connected with the adjusting part, a first connecting piece movably connected with the first driving rod, a movable rod connected with the first connecting piece, a second connecting piece connected with the other end of the movable rod, and a water outlet connected with the second connecting piece;

[0024] The first connecting piece and the second connecting piece are identical in structure and comprise two hinged blocks hinged with each other;

[0025] The first driving rod is movably connected with the support rod.

[0026] Further, the adjusting part comprises a sleeve arranged on the rotating shaft and a second bevel gear, hinged seats arranged on the top of the sleeve and the rotating shaft respectively, a driving wheel arranged on the sleeve, a first connecting rod movably connected with one of the hinged seats, a second connecting rod movably connected with the other hinged seat, and a driving ball arranged on the second connecting rod;

[0027] The first connecting rod and the second connecting rod are movably connected, and the first bevel gear is engaged with the second bevel gear.

[0028] The driving wheel is provided with a limiting groove in the circumferential direction, and the first driving rod has a C-shaped structure at one end, and the inner wall of the C-shaped structure is provided with a limiting ball, and the limiting ball is located in the limiting groove.

[0029] The water inlet pipe is connected with the water pump and is used for water conveying work.

[0030] Further, the water outlet comprises a water inlet seat mounted on the base, a water inlet pipe in communication with the water inlet seat, a valve core built in the water inlet pipe, a connecting rod connected with the valve core, and a third connecting rod connected with the connecting rod.

[0031] The third connecting rod is connected with the second connecting piece.

[0032] The water inlet seat is connected with the injection assembly, and the water inlet pipe serves as a water inlet end.

[0033] The valve core is provided with a water passage, and the water injection speed is changed by rotating the valve core to adjust the contact area between the water flow direction and the water passage.

[0034] Further, the injection assembly comprises a support arranged on the support frame, a rocker connected with one end of the transmission shaft, a second driving rod movably connected with the rocker, a movable block arranged on the second driving rod and movably connected with the second driving rod, a propelling rod arranged on the movable block, a sealing block arranged on the propelling rod, and a propelling cylinder arranged on the base.

[0035] The sealing block is located in a propelling cylinder which is communicated with the water inlet seat and the water outlet pipe respectively;

[0036] The movable rod and the propelling rod penetrate through the support.

[0037] Further, it further comprises a placing table arranged on the workbench, and a detection unit located above the placing table;

[0038] The placing table comprises a lifting seat and a limiting column connected with the lifting seat.

[0039] The detection unit comprises a support frame arranged on the workbench, a plurality of driving parts of the same structure arranged on the support frame, a moving disc for connecting the driving parts, an illumination assembly symmetrically arranged on the moving disc, and a plurality of collection heads uniformly arranged on the moving disc.

[0040] Further, the driving part comprises a displacement motor fixedly installed on the support frame, a driving shaft connected with the output end of the displacement motor, an adjusting rod sleeved on the driving shaft, a connecting shaft for connecting the adjusting rod, and joint connecting rods symmetrically arranged on both ends of the connecting shaft.

[0041] The other end of the joint connecting rod is connected with a driven shaft arranged on the moving disc.

[0042] Further, the illumination assembly comprises two bases of the same structure, at least four deflection rods movably arranged on the bases, an adapter rod for connecting the deflection rods located on different bases, a rotating motor arranged on one of the bases, and a lamp arranged on the other base.

[0043] The output end of the rotating motor is connected with one of the deflection rods.

[0044] Beneficial effects: the application discloses cubic boron nitride blade and negative chamfer automatic grinding machine tool, and the negative chamfer is designed at the blade edge of the cubic boron nitride blade, so that the wedge angle of the cutter can be increased, the blade edge is changed from a straight blade to a surface blade, the cutting force is dispersed, the direct stress on the blade edge is reduced, the risk of blade collapse in intermittent cutting and strong cutting is reduced, stress concentration at the micro gap of the blade edge is avoided, and the blade damage is avoided; the first protrusion, the second protrusion and the drainage plate can guide the waste in the machining process or play the effect of reinforcing ribs to ensure the normal work of the tool holder; the injection assembly and the input assembly in the machine tool for grinding the blade cooperate, the grinding unit is connected with the driven wheel, the spraying amount and the spraying speed of the cutting fluid sprayed on the surface of the blade are adjusted according to the grinding rate of the grinding unit, so that the injection amount of the cutting fluid can be adjusted in real time according to the grinding rate, and the light assembly for detecting the blade collapse is arranged in the device, the distance between the light assembly and the blade is changed by changing the position of the light assembly, the size of the light and shadow formed by the blade is changed, the collapse position is enlarged, then the image acquisition head is arranged to perform image acquisition work on the light and shadow, whether the blade edge collapses is judged according to the acquired data, and the detection work of the blade is completed. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is the structure diagram of the cubic boron nitride blade of the application;

[0046] Figure 2 is the structure diagram of the cubic boron nitride blade of the application;

[0047] Figure 3 is the structure diagram of the grinding unit of the application;

[0048] Figure 4 is the structure diagram of the grinding unit of the application;

[0049] Figure 5 is the structure diagram of the injection unit of the application;

[0050] Figure 6 is the structure diagram of the input assembly of the application;

[0051] Figure 7 is the structure diagram of the water inlet seat of the application;

[0052] Figure 8 is the structure diagram of the injection assembly of the application;

[0053] Figure 9 is the structure diagram of the detection unit of the application;

[0054] Figure 10 is the structure diagram of the light assembly of the application.

[0055] Reference: 1, workbench; 2, grinding equipment; 21, grinding motor; 22, grinding shaft; 23, grinding wheel; 24, driving wheel; 3, water injection unit; 31, driven wheel; 32, support frame; 33, transmission shaft; 34, first helical gear; 35, injection assembly; 351, rocker; 352, second drive rod; 353, support; 354, push rod; 355, sealing block; 356, push cylinder; 357, movable block; 36, input assembly; 361, rotating shaft; 362, second helical gear; 363, drive wheel; 364, second connecting rod; 365, hinged seat; 366, first connecting rod; 367, drive ball; 368, first drive rod; 369, support rod; 3610, first connecting piece; 3611, movable rod; 3612, second connecting piece; 3613, third connecting rod; 3614, connecting rod; 3615, valve core; 3616, water inlet pipe; 3617, water inlet seat; 3618, sleeve; 37, base; 38, water outlet pipe; 4, clamping equipment; 41, adjusting motor; 42, worm; 43, worm gear; 44, placing disc; 45, adjusting unit; 5, mechanical hand; 6, detection unit; 61, support frame; 62, displacement motor; 63, drive shaft; 64, adjusting rod; 65, connecting shaft; 66, joint connecting rod; 67, driven shaft; 68, moving disc; 69, lighting assembly; 691, base; 692, rotating motor; 693, deflection rod; 694, adapter rod; 695, lamp; 610, collection head; 7, placing table; 8, tool holder; 9, drainage plate; 10, first protrusion; 11, second protrusion. DETAILED DESCRIPTION

[0056] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0057] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0058] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor does it mean an embodiment that is separate or selectively excluded from other embodiments.

[0059] The present application discloses cubic boron nitride blade and automatic grinding machine for negative chamfering, referring to Figures 1-10 , comprising:

[0060] The tool seat 8 is used for turning work of a part, and a negative chamfer is arranged at the cutting edge of the tool seat 8; the drainage plates 9 are symmetrically arranged on both sides of the tool seat 8 and are used for draining the turning waste; the first protrusions 10 and the second protrusions 11 are arranged on the drainage plates 9 respectively, the first protrusions 10 are arranged at the vertex positions of the drainage plates 9, and the second protrusions 11 are arranged between two adjacent first protrusions 10; the mounting holes are respectively arranged through the tool seat 8 and the drainage plates 9 and are used for mounting the blade; the negative chamfer is arranged at the cutting edge of the cubic boron nitride blade, so that the wedge angle of the tool can be increased, the cutting edge is changed from a straight edge to a surface edge, the cutting force is dispersed, the direct force on the edge is reduced, the risk of edge collapse in intermittent cutting and strong cutting is reduced, stress concentration at the microscopic gap of the edge is avoided, and the blade is damaged; the first protrusions 10, the second protrusions 11 and the drainage plates 9 can drain the waste in the machining process or have the effect of reinforcing ribs to ensure the normal work of the tool seat 8.

[0061] A kind of cubic boron nitride blade is ground with negative chamfer automatic grinding machine tool, including workbench 1, for the blade negative chamfer grinding work of grinding unit arranged on the workbench 1;Water injection unit 3, arranged on the workbench 1, for the injection work of cutting fluid in the process of grinding work to blade;The water injection unit 3 includes the base 37 arranged on the workbench 1, the support frame 32 connected with the base 37, the transmission shaft 33 arranged on the support frame 32, the first helical gear 34 sleeved on the transmission shaft 33, the input assembly 36 meshed with the first helical gear 34, the driven wheel 31 arranged at one end of the transmission shaft 33, the injection assembly 35 connected with the other end of the transmission shaft 33, and the water outlet pipe 38 communicated with the injection assembly 35;The grinding unit is connected with driven wheel 31, according to the grinding rate of grinding unit, the spraying amount and the spraying speed of cutting fluid sprayed on the blade are adjusted, so that the injection amount of cutting fluid can be adjusted in real time according to the grinding rate;The driving wheel 24, the driven wheel 31 and the chain are connected, so that the power source of water injection unit 3 is grinding equipment 2, and then when water injection unit 3 carries out water injection work, the injection amount and the injection rate of water are matched with the rotating speed of grinding equipment 2, so that the injection amount of cutting fluid can be adjusted in real time according to the rotating speed of grinding equipment 2, and then the blade in the process of grinding work can be cooled in real time, to avoid damage to the blade, and ensure the smooth progress of grinding work.

[0062] The grinding unit comprises a grinding device 2, a clamping device 4 and a manipulator 5 arranged on the workbench 1; the grinding device 2 comprises a grinding motor 21 fixedly installed on the workbench 1, a grinding shaft 22 connected with an output end of the grinding motor 21, a driving wheel 24 sleeved on the grinding shaft 22, and a grinding wheel 23 arranged on the grinding shaft 22; the clamping device 4 comprises an adjusting unit 45 fixedly installed on the workbench 1, an adjusting motor 41 arranged on the adjusting unit 45, a worm 42 connected with the adjusting motor 41, a worm wheel 43 connected with the worm 42 and arranged on the adjusting unit 45, and a placing disc 44 arranged on the worm wheel 43; the driving wheel 24 is connected with a driven wheel 31 through a chain; the grinding motor 21 can drive the water conveying assembly and the injection assembly 35 to move through the chain, so that the injection amount of the cutting fluid can be adjusted; after the blade to be machined is gripped by the manipulator 5, the blade to be machined can be carried to the clamping device 4 through the rotating disc, and the blade is limited by the clamping jaw arranged on the placing disc 44, then the grinding motor 21 starts to work, the moving grinding motor 21 can drive the grinding shaft 22 to rotate, so that the grinding wheel 23 moves, then the adjusting motor 41 and the adjusting unit 45 start to work, at this time, the moving adjusting motor 41 can drive the worm 42 connected therewith to rotate, then the moving worm 42 can drive the worm wheel 43 engaged therewith to rotate, so as to drive the placing disc 44 to move, and the grinding angle between the blade and the grinding wheel 23 is adjusted, the distance between the blade and the grinding wheel 23 can be adjusted through the adjusting unit 45, and the machining of the blade is completed.

[0063] The input assembly 36 comprises a supporting rod 369 and a rotating shaft 361 arranged on the supporting frame 32 respectively, an adjusting part arranged on the rotating shaft 361, a first driving rod 368 movably connected with the adjusting part, a first connecting piece 3610 movably connected with the first driving rod 368, a movable rod 3611 connected with the first connecting piece 3610, a second connecting piece 3612 connected with the other end of the movable rod 3611, and a water outlet connected with the second connecting piece 3612; the first connecting piece 3610 and the second connecting piece 3612 are the same in structure and comprise two hinged hinged blocks; the first driving rod 368 is movably connected with the supporting rod 369; the adjusting part comprises a sleeve 3618 sleeved on the rotating shaft 361 and a second bevel gear 362, hinged seats 365 arranged on the sleeve 3618 and the top of the rotating shaft 361 respectively, a driving wheel 363 sleeved on the sleeve 3618, a first connecting rod 366 movably connected with one of the hinged seats 365, a second connecting rod 364 movably connected with the other hinged seat 365, and a driving ball 367 arranged on the second connecting rod 364; wherein the first connecting rod 366 is movably connected with the second connecting rod 364, the first bevel gear 34 is engaged with the second bevel gear 362; the driving wheel 363 is provided with a limiting groove in the circumferential direction, one end of the first driving rod 368 is in C-shaped structure, and a limiting ball is arranged on the inner wall of the first driving rod 368, and the limiting ball is located in the limiting groove; the rotating shaft 361 is further provided with an abutting block, and the abutting block is located between the two hinged seats 365 and is used for limiting the movement area of one of the limiting seats.

[0064] When the grinding device 2 starts to work, at this time the moving grinding device 2 can drive the driving wheel 363 to start to work, the moving driving wheel 363 can drive the driven wheel 31 to rotate through the chain, at this time the moving driven wheel 31 can drive the transmission shaft 33 to rotate, then the moving transmission shaft 33 can drive the first helical gear 34 to rotate, the moving first helical gear 34 can drive the second helical gear 362 to rotate, at this time the moving second helical gear 362 can drive the first helical gear 34 to rotate, at this time the moving first helical gear 34 can drive the rotating shaft 361 to rotate, with the increase of the rotating speed of the grinding device 2, the rotating speed of the rotating shaft 361 is also increasing, at this time the driving ball 367 will be subjected to a larger centrifugal force with the increase of the rotating speed of the rotating shaft 361, and then the driving ball 367 can gradually move away from the rotating shaft 361, then the moving driving ball 367 can drive the second connecting rod 364 to move, then the moving second connecting rod 364 can drive the first connecting rod 366 to move, at this time the moving first connecting rod 366 can drive one of the hinged seats 365 to move, so that the sleeve 3618 can move in the axial direction of the rotating shaft 361, because the limiting ball is located in the limiting groove, when the sleeve 3618 moves, it can press down or lift the first driving rod 368, then the moving first driving rod 368 can drive the movable rod 3611 to move through the first connecting piece 3610, then the moving movable rod 3611 can drive the second connecting piece 3612 to move, so as to adjust the position of the water outlet part, adjust the contact surface between the water flow hole and the water flow in the water outlet part, so as to ensure the injection speed of the water flow.

[0065] The water outlet part comprises a water inlet seat 3617 mounted on the base 37, a water inlet pipe 3616 in communication with the water inlet seat 3617, a valve core 3615 built in the water inlet pipe 3616, a movable rod 3611 connected with the valve core 3615, and a third connecting rod 3613 connected with the movable rod 3611; the third connecting rod 3613 is connected with a second connecting piece 3612; the water inlet seat 3617 is connected with the injection assembly 35, and the water inlet pipe 3616 serves as a water inlet end; the valve core 3615 is provided with a water passing hole, by rotating the valve core 3615, the contact area between the water flow direction and the water passing hole is adjusted, and the injection speed of the water flow is changed; when the second connecting piece 3612 starts to move, the moving second connecting piece 3612 can drive the connecting rod 3614 to move, so that the connecting rod 3614 can drive the valve core 3615 to rotate, the position of the water passing hole in the valve core 3615 is adjusted, the angle between the water passing hole and the water flow direction is changed, and thus the injection speed of the water flow is changed, and then the injection speed of the water flow is adjusted according to the grinding speed of the grinding equipment 2, and the grinding speed affects the temperature of the workpiece to be processed, so that when the grinding speed is too fast, the temperature of the workpiece to be processed is increased, and at this time, the flow of the water flow is also increased, so that the cooling work of the workpiece to be processed is achieved.

[0066] The injection assembly 35 comprises a support 353 arranged on the support frame 32, a rocker 351 connected with one end of the transmission shaft 33, a second driving rod 352 movably connected with the rocker 351, a movable block 357 arranged on the second driving rod 352 and movably connected with the second driving rod 352, a pushing rod 354 arranged on the movable block 357, a sealing block 355 arranged on the pushing rod 354, and a pushing cylinder 356 arranged on the base 37; the sealing block 355 is located in the pushing cylinder 356, and the pushing cylinder 356 is in communication with the water inlet seat 3617 and the water outlet pipe 38 respectively; the movable rod 3611 and the pushing rod 354 penetrate through the support 353; when the transmission shaft 33 starts to rotate, the moving transmission shaft 33 drives the rocker 351 to rotate, and then the moving rocker 351 drives the second driving rod 352 to move, at this time, the moving second driving rod 352 drives the movable block 357 to move, so that the pushing rod 354 is driven to move, the movement direction of the sealing block 355 in the pushing cylinder 356 is changed, and thus the injection work of the cutting fluid is completed, and the cooling work of the blade is completed; in this process, a water outlet check valve is arranged between the pushing cylinder 356 and the water outlet pipe 38, and when the sealing block 355 approaches the water outlet check valve, the water outlet check valve is opened to complete the discharge work of the cutting fluid.

[0067] Also include the placement table 7 set on the workbench 1, and the detection unit 6 located above the placement table 7;Wherein the placement table 7 includes a lifting seat, and a limiting column connected with the lifting seat;The detection unit 6 includes a support frame 61 arranged on the workbench 1, a plurality of driving parts with the same structure arranged on the support frame 61, a moving disc 68 for connecting the driving parts, a light assembly 69 symmetrically arranged on the moving disc 68, and a plurality of acquisition heads 610 uniformly arranged on the moving disc 68;The driving part includes a displacement motor 62 fixedly installed on the support frame 61, a driving shaft 63 connected with the output end of the displacement motor 62, an adjusting rod 64 sleeved on the driving shaft 63, a connecting shaft 65 for connecting the adjusting rod 64, and joint connecting rods 66 symmetrically arranged on both ends of the connecting shaft 65;The moving disc 68 is also provided with a driven shaft 67, and the other end of the joint connecting rod 66 is connected with the driven shaft 67, after completing the negative chamfering work, at this time the manipulator 5 carries the processed blade to the placement table 7, then the displacement motor 62 starts to work, the moving displacement motor 62 can drive the driving shaft 63 to rotate, so as to drive the adjusting rod 64 to move, the moving adjusting rod 64 can drive the connecting shaft 65 to move, at this time the moving connecting shaft 65 can drive the joint connecting rod 66 to move, then the moving joint connecting rod 66 can drive the moving disc 68 to move, so as to change the position of the light assembly 69 and the acquisition head 610, the blade is irradiated by the light assembly 69, and the distance between the light assembly 69 and the blade is adjusted, the size of the shadow of the blade is adjusted, then the broken edge position on the blade is detected by the acquisition head 610, so as to reject the blade with broken edge, avoid the case that the broken edge is too small and difficult to detect, and at least four independent displacement motors 62 are arranged, which can increase the freedom degree of the light assembly 69 and the acquisition head 610, so as to adjust the acquisition and irradiation area of the acquisition head 610 and the light assembly 69, and ensure the smooth progress of the blade detection work.

[0068] The light assembly 69 comprises two base frames 691 which are identical in structure, at least four deflection rods 693 movably arranged on the base frames 691, connecting rods 694 for connecting the deflection rods 693 on different base frames 691, a rotating motor 692 arranged on one of the base frames 691, and a lamp 695 arranged on the other base frame 691; the output end of the rotating motor 692 is connected with one of the deflection rods 693; since the adjustment mode of the collecting head 610 and the light assembly 69 is synchronous adjustment, in order to ensure the accuracy of the detection result, when the detection work is performed, the rotating motor 692 starts to work, the moving rotating motor 692 can drive the deflection rod 693 to move, then the moving deflection rod 693 can drive the connecting rod 694 to move, so that the moving connecting rod 694 can drive the other deflection rod 693 to move, thereby changing the irradiation area of the lamp 695 on the other base frame 691, completing the adjustment work of the shadow generated by the blade, and completing the detection work of the blade.

[0069] Work principle instruction: when the blade to be processed is grabbed by the manipulator 5, the manipulator 5 is prior art, and the manipulator 5 is provided with a rotating disc, so that the rotating disc can carry the blade to be processed to the clamping device 4, and the clamping device 4 is provided with a clamping jaw, and the clamping jaw can limit the blade, then the grinding motor 21 starts to work, the rotating grinding motor 21 can drive the grinding shaft 22 to rotate, so that the grinding wheel 23 moves, then the adjusting motor 41 and the adjusting unit 45 start to work, at this time, the rotating adjusting motor 41 can drive the worm 42 connected thereto to rotate, then the rotating worm 42 can drive the worm gear 43 engaged therewith to rotate, so as to drive the placing disc 44 to move, adjust the grinding angle between the blade and the grinding wheel 23, and adjust the distance between the blade and the grinding wheel 23 through the adjusting unit 45, so as to complete the processing work of the blade; when the grinding device 2 starts to work, at this time, the rotating grinding device 2 can drive the driving wheel 24 to start to work, the rotating driving wheel 24 can drive the driven wheel 31 to rotate through the chain, at this time, the rotating driven wheel 31 can drive the transmission shaft 33 to rotate, then the rotating transmission shaft 33 can drive the first bevel gear 34 to rotate, the rotating first bevel gear 34 can drive the second bevel gear 362 to rotate, at this time, the rotating second bevel gear 362 can drive the first bevel gear 34 to rotate, at this time, the rotating first bevel gear 34 can drive the rotating shaft 361 to rotate, with the increase of the rotating speed of the grinding device 2, the rotating speed of the rotating shaft 361 also increases, at this time, the driving ball 367 will be subjected to a large centrifugal force with the increase of the rotating speed of the rotating shaft 361, and then the driving ball 367 can gradually move away from the rotating shaft 361, then the rotating driving ball 367 can drive the second connecting rod 364 to move, then the rotating second connecting rod 364 can drive the first connecting rod 366 to move, at this time, the rotating first connecting rod 366 can drive one of the hinged seats 365 to move, so that the sleeve 3618 can move in the axial direction of the rotating shaft 361, since the limiting ball is located in the limiting groove, when the sleeve 3618 moves, the first driving rod 368 can be pressed down or lifted, then the rotating first driving rod 368 can drive the movable rod 3611 to move through the first connecting piece 3610, then the rotating movable rod 3611 can drive the second connecting piece 3612 to move, so as to adjust the position of the water outlet part, adjust the contact surface between the water flow hole and the water flow in the water outlet part, so as to ensure the injection speed of the water flow;

[0070] When the second connecting piece 3612 starts to move, the moving second connecting piece 3612 can drive the connecting rod 3614 to move, so that the connecting rod 3614 can drive the valve core 3615 to rotate, adjust the position of the water hole in the valve core 3615, change the angle between the water hole and the water flow direction, thereby changing the injection speed of the water flow, and then adjusting the water injection speed according to the grinding speed of the grinding equipment 2; when the transmission shaft 33 starts to rotate, the moving transmission shaft 33 drives the rocker 351 to rotate, and then the moving rocker 351 can drive the second drive rod 352 to move, at this time the moving second drive rod 352 can drive the movable block 357 to move, so as to drive the advancing rod 354 to move, change the movement direction of the sealing block 355 in the advancing cylinder 356, thereby completing the injection work of the cutting fluid and the cooling work of the blade; after completing the negative chamfering work, at this time the manipulator 5 carries the machined blade to the placement table 7, and then the displacement motor 62 starts to work. The moving displacement motor 62 can drive the drive shaft 63 to rotate, thereby driving the adjusting rod 64 to move, the moving adjusting rod 64 can drive the connecting shaft 65 to move, at this time the moving connecting shaft 65 can drive the joint connecting rod 66 to move, and then the moving joint connecting rod 66 can drive the moving disc 68 to move, thereby changing the position of the lighting assembly 69 and the collection head 610. The lighting assembly 69 irradiates the blade, adjusts the distance between the lighting assembly 69 and the blade, adjusts the size of the shadow of the blade, and then the collection head 610 detects the position of the broken blade on the blade, thereby rejecting the blade with broken edge.

[0071] When detecting, the rotating motor 692 starts to work. The moving rotating motor 692 can drive the deflection rod 693 to move, and then the moving deflection rod 693 can drive the adapter rod 694 to move, so that the moving adapter rod 694 can drive the other deflection rod 693 to move, thereby changing the irradiation area of the lamp 695 on the other base 691, adjusting the shadow of the blade, and completing the detection of the blade.

[0072] The preferred embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the specific details in the above-described embodiments. Within the technical concept of the application, various equivalent transformations of the technical solutions of the application can be made, and these equivalent transformations all belong to the protection scope of the application.

Claims

1. An automatic grinding machine for negative chamfering of cubic boron nitride inserts, characterized in that: The negative chamfering automatic grinding machine tool includes a worktable (1) and a grinding unit disposed on the worktable (1) for performing negative chamfering grinding on the cutting tool; Water injection unit (3) is set on the worktable (1) and is used to inject cutting fluid into the cutting tool during the grinding process; The water injection unit (3) includes a base (37) disposed on the workbench (1), a support frame (32) connected to the base (37), a drive shaft (33) disposed on the support frame (32), a first helical gear (34) sleeved on the drive shaft (33), an input component (36) meshing with the first helical gear (34), a driven wheel (31) disposed at one end of the drive shaft (33), an injection component (35) connected to the other end of the drive shaft (33), and a water outlet pipe (38) communicating with the injection component (35). The grinding unit is connected to the driven wheel (31). According to the grinding rate of the grinding unit, the amount and speed of the cutting fluid sprayed on the blade surface are adjusted so that the amount of cutting fluid injected can be adjusted in real time according to the grinding speed. The input component (36) includes a support rod (369) and a rotating shaft (361) respectively disposed on the support frame (32), an adjustment part disposed on the rotating shaft (361), a first drive rod (368) movably connected to the adjustment part, a first connector (3610) movably connected to the first drive rod (368), a movable rod (3611) connected to the first connector (3610), a second connector (3612) connected to the other end of the movable rod (3611), and a water outlet part connected to the second connector (3612). The first connector (3610) and the second connector (3612) have the same structure, including two hinge blocks that are hinged to each other; The first drive rod (368) is movably connected to the support rod (369); The injection assembly (35) includes a bracket (353) disposed on the support frame (32), a rocker arm (351) connected to one end of the drive shaft (33), a second drive rod (352) movably connected to the rocker arm (351), a movable block (357) disposed on and movably connected to the second drive rod (352), a push rod (354) disposed on the movable block (357), a sealing block (355) disposed on the push rod (354), and a push cylinder (356) disposed on the base (37). The sealing block (355) is located inside the propulsion cylinder (356), which is connected to the water inlet seat (3617) and the water outlet pipe (38) respectively; The movable rod (3611) and the push rod (354) pass through the bracket (353).

2. The automatic grinding machine tool for negative chamfering of cubic boron nitride cutting tools according to claim 1, characterized in that: The grinding unit includes a grinding device (2), a clamping device (4), and a robot (5) mounted on the worktable (1). The grinding equipment (2) includes a grinding motor (21) fixedly installed on the worktable (1), a grinding shaft (22) connected to the output end of the grinding motor (21), a drive wheel (24) sleeved on the grinding shaft (22), and a grinding wheel (23) set on the grinding shaft (22). The clamping device (4) includes an adjustment unit (45) fixedly installed on the worktable (1), an adjustment motor (41) provided on the adjustment unit (45), a worm (42) connected to the output end of the adjustment motor (41), a worm wheel (43) connected to the worm (42) and provided on the adjustment unit (45), and a placement plate (44) provided on the worm wheel (43). The driving wheel (24) and the driven wheel (31) are connected by a chain; The set chain enables the grinding motor (21) to drive the water supply assembly and injection assembly (35) to move, thereby adjusting the amount of cutting fluid injected.

3. The automatic grinding machine tool for negative chamfering of cubic boron nitride cutting tools according to claim 2, characterized in that: The adjusting part includes a sleeve (3618) sleeved on the rotating shaft (361) and a second helical gear (362), hinge seats (365) respectively disposed on the top of the sleeve (3618) and the rotating shaft (361), a drive wheel (363) sleeved on the sleeve (3618), a first connecting rod (366) movably connected to one of the hinge seats (365), a second connecting rod (364) movably connected to the other hinge seat (365), and a drive ball (367) disposed on the second connecting rod (364). The first connecting rod (366) is movably connected to the second connecting rod (364), and the first helical gear (34) meshes with the second helical gear (362); The drive wheel (363) is provided with a limiting groove in the circumferential direction. One end of the first drive rod (368) is a C-shaped structure with a limiting ball on its inner wall. The limiting ball is located in the limiting groove.

4. The automatic grinding machine tool for negative chamfering of cubic boron nitride cutting tools according to claim 3, characterized in that: The water outlet includes a water inlet seat (3617) mounted on the base (37), a water inlet pipe (3616) communicating with the water inlet seat (3617), a valve core (3615) built into the water inlet pipe (3616), a connecting rod (3614) connected to the valve core (3615), and a third connecting rod (3613) connected to the connecting rod (3614). The third link (3613) is connected to the second connector (3612); The water inlet seat (3617) is connected to the injection assembly (35), and the water inlet pipe (3616) serves as the water inlet end; The valve core (3615) is provided with a water passage hole. By rotating the valve core (3615), the contact area between the water flow direction and the water passage hole can be adjusted, thereby changing the water injection speed.

5. The automatic grinding machine tool for negative chamfering of cubic boron nitride cutting tools according to claim 4, characterized in that: It also includes a placement platform (7) disposed on the workbench (1) and a detection unit (6) located above the placement platform (7); The placement platform (7) includes a lifting seat and a limiting post connected to the lifting seat; The detection unit (6) includes a support frame (61) disposed on the workbench (1), a plurality of identical drive units disposed on the support frame (61), a movable disk (68) for connecting the drive units, an illumination component (69) symmetrically disposed on the movable disk (68), and a plurality of acquisition heads (610) uniformly disposed on the movable disk (68).

6. The automatic grinding machine tool for negative chamfering of cubic boron nitride cutting tools according to claim 5, characterized in that: The drive unit includes a displacement motor (62) fixedly mounted on the support frame (61), a drive shaft (63) connected to the output end of the displacement motor (62), an adjusting rod (64) sleeved on the drive shaft (63), a connecting shaft (65) for connecting the adjusting rod (64), and joint connecting rods (66) symmetrically arranged on both ends of the connecting shaft (65). The movable disk (68) is also provided with a driven shaft (67), and the other end of the joint link (66) is connected to the driven shaft (67).

7. The automatic grinding machine tool for negative chamfering of cubic boron nitride cutting tools according to claim 6, characterized in that: The lighting assembly (69) includes two identical bases (691), at least four deflection rods (693) movably mounted on the bases (691), a connecting rod (694) for connecting the deflection rods (693) located on different bases (691), a rotating motor (692) mounted on one of the bases (691), and a lamp (695) mounted on the other base (691). The output end of the rotating motor (692) is connected to one of the deflection rods (693).

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