Hard alloy indexable blade and grinding device thereof

Abstract

The invention relates to the technical field of metal cutting blades, in particular to a hard alloy indexable blade and a grinding device.A blade body of the hard alloy indexable blade comprises a cutting ring seat, a cutting ring edge and a chip groove, wherein the cutting ring edge is formed by combining a tooth edge and a round edge which are detachably installed at one end of the cutting ring seat, and the chip groove is formed in the peripheral face of the cutting ring seat; the blade can achieve dual purposes; the grinding device comprises a base, a bearing table, a tapping part and an annular blade grinding part, the tapping part is composed of a propelling assembly installed on the top of the bearing table and a tapping assembly installed between the base and the bearing table, and the annular blade grinding part comprises a transposition driving assembly installed between the bearing table and the propelling assembly; and the transposition driving assembly comprises a side plate, a mounting column fixed to one side of the side plate and a first ring cylinder movably arranged on the outer side of the mounting column in a sleeving mode, and a grinding feeding assembly is installed on the first ring cylinder. According to the grinding device, internal thread tapping and ring edge grinding can be conducted synchronously, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of metal cutting insert technology, specifically a cemented carbide indexable insert and its grinding apparatus. Background Technology

[0002] Indexable inserts are polygonal cutting components that are pre-machined and have several cutting edges, and are clamped onto the tool body by mechanical clamping. Their core feature is that the cutting edges can be changed to a different position for continued use after they become dull.

[0003] The prior art discloses a Chinese patent with publication number CN 107803523 A: an indexable ring insert, which discloses that the insert has a ring-shaped cutting edge on the top or both the top and bottom surfaces, and the upper and bottom surfaces are composed of alternating arc lines and non-arc lines. The back face of the insert is composed of alternating surfaces with upper and lower non-arc lines as edges and arc surfaces with upper and lower arc lines as edges, so as to provide both the arc cutting function of a common circular insert and the cutting function of a straight cutting edge.

[0004] However, the aforementioned existing technology still has certain drawbacks. In the process of use, when performing circular cutting on high-hardness metal materials, the blade cuts in a face-to-face manner, which can easily cause local chipping.

[0005] The prior art discloses Chinese Patent No. CN 112428029 A: a special blade grinding device, which discloses that a motor drives a lead screw to rotate, causing a movable block two to move downward along the lead screw, and a movable rod to move downward along the limiting hole, so that the fixed plate and the motor move downward, the grinding wheel moves to the blade, the motor stops rotating, the handwheel is turned to drive the lead screw three to rotate, the movable blocks one move closer to each other, so that the blade fits against the grinding wheel, the motor two is started to drive the grinding wheel to rotate, and the blade is ground, thus achieving the purpose of dual-station grinding.

[0006] However, the aforementioned existing technology still has certain drawbacks. During use, it cannot automatically adjust the contact state between the grinding wheel and the blade according to the progress of the grinding process. Furthermore, after the blade is ground, it is necessary to change equipment to tap the mounting holes on the blade. Summary of the Invention

[0007] The purpose of this invention is to provide a cemented carbide indexable cutting tool and its grinding apparatus to solve the problems mentioned in the background art.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] A carbide indexable insert, the indexable insert comprising:

[0010] The blade body includes a ring cutter holder, a ring blade fixedly mounted on one end of the ring cutter holder by a locking bolt, multiple chip removal grooves evenly distributed in a ring on the outer circumference of the ring cutter holder, a sealing ring threaded to the outer side of one end of the ring cutter holder, and a mounting ring fixedly embedded in the centerline of the ring cutter holder. The end of the ring cutter holder on which the ring blade is mounted has an indexing groove concentrically set with the ring cutter holder, and the inner side of the mounting ring is tapped with internal threads.

[0011] The present invention also provides a grinding apparatus for grinding the above-mentioned indexable carbide cutting tools, the grinding apparatus comprising:

[0012] The base has a support platform fixedly installed on its top.

[0013] The threading part includes a push assembly mounted on the top of the support platform and a threading assembly mounted between the base and the support platform;

[0014] The ring-blade grinding section includes a rotation drive assembly installed between the support platform and the propulsion assembly. The rotation drive assembly includes a side plate, a mounting column fixed to one side of the side plate, and a ring cylinder movably sleeved on the outside of the mounting column. A grinding feed assembly is installed on the ring cylinder.

[0015] Blade clamping mechanism; the blade clamping mechanism is fixedly installed at the end of the mounting column away from the side plate.

[0016] As a preferred embodiment of the grinding device for the carbide indexable insert of the present invention, the propulsion assembly includes a base fixed on the top of the support platform and a cam plate disposed on the top of the support platform. A slide is slidably installed on the top of the base platform, and a T-shaped frame is fixedly provided on one side of the slide. Shafts are fixedly provided on opposite sides of both ends of the cam plate. The shaft located at the bottom of the cam plate is rotatably installed with the support platform through a bearing. A movable seat slidably installed inside the T-shaped frame is movably sleeved on the outside of the shaft located at the top of the cam plate.

[0017] As a preferred embodiment of the grinding device for the carbide indexable insert of the present invention, the tapping assembly includes two uprights fixed to the top of the base, a crossbar fixedly connected between the two uprights, a slide block movably sleeved on the outside of the crossbar, and a rack fixedly connected to the top of the slide block.

[0018] As a preferred embodiment of the grinding device for the carbide indexable insert of the present invention, the tapping assembly further includes a core column that is rotatably mounted on the top of the slide table in a through manner. A limiting ring is fixedly sleeved on the outside of the core column to prevent the core column from shifting. A cutting head is fixedly installed on one end of the core column near the ring cutting edge grinding part. A gear is also fixedly sleeved on the outside of the core column. A limiting groove is opened on the top of the slide table that is directly opposite to the gear. The end of the rack away from the slide is slidably connected to the inside of the limiting groove.

[0019] As a preferred embodiment of the grinding device for the carbide indexable cutting tool of the present invention, the indexing drive assembly includes a straight plate fixedly connected to one side of the slide table, a lifting column is vertically movably provided at the end of the straight plate away from the slide table, a ring plate is fixedly sleeved on the outside of the lifting column at the upper end of the straight plate, and a spring is sleeved on the outside of the lifting column to fixally connect the ring plate and the straight plate.

[0020] As a preferred embodiment of the grinding device for the carbide indexable cutting tool of the present invention, the indexing drive assembly further includes a bracket fixed to the top of the base and a circular plate fixed to one end of the mounting column. The first ring cylinder is movably connected to the top of the bracket. Two limiting rings are fixedly sleeved on the outside of the mounting column to prevent the first ring cylinder from shifting. A guide groove is provided on the outside of the first ring cylinder.

[0021] As a preferred embodiment of the grinding device for the carbide indexable insert of the present invention, the grinding feed assembly includes an L-shaped seat fixed to one end of the ring cylinder and a guide post fixed to the top of the ring cylinder on one circumferential side. A lifting plate is movably sleeved between the L-shaped seat and the guide post. A grinding arc plate is fixedly connected to one end of the lifting plate. A first pusher is fixedly installed on the top of the lifting plate, and a second pusher is fixedly installed between the side plate and the slide table.

[0022] The output end of the pusher is fixedly connected to a pressure strip, which is fixedly connected to the lifting plate. An air passage is provided at the axis of the mounting column. Annular grooves are provided on both the outer side of the mounting column and the inner side of the ring cylinder. The two annular grooves are arranged opposite each other, and one end of the air passage is connected to the annular groove on the mounting column.

[0023] As a preferred embodiment of the grinding device for the carbide indexable cutting tool of the present invention, wherein: the pushing member one includes a square tube one fixedly mounted on the top of the lifting plate, a push plate one movably connected inside the square tube one, a push column one movably penetrating the square tube one fixedly connected to the bottom of the push plate one, a pressure strip fixedly connected to the bottom end of the push column one, a spring two fixedly connected to the push plate one and the bottom end face of the inner side of the square tube one is sleeved on the outside of the push column one, and an air pipe one is connected between the square tube one and the annular groove on the ring tube one;

[0024] The second pusher includes a square tube fixed to the top of the support platform. A push plate is movably connected inside the square tube. A push column is fixedly connected to one side of the push plate and moves through the square tube. An air pipe is provided between the square tube and the air passage. A push bar is fixedly connected between the end of the push column extending to the outside of the square tube and the slide table.

[0025] As a preferred embodiment of the grinding device for the carbide indexable cutting tool of the present invention, the cutting tool clamping mechanism includes an annular cylinder two fixedly connected to one end of a circular plate and a gear two rotatably connected to one end of the circular plate via a rotating rod. An annular groove is provided at one end of the annular cylinder two, and a gear ring meshing with the gear two is rotatably connected to the outer side of the annular cylinder two via a bearing.

[0026] The second ring cylinder has multiple rod supports that are evenly distributed in a ring on its circumferential side. Each rod support has a top rod inside. A movable column that passes through the corresponding rod support is fixedly connected to the outside of the top rod. A spring is fixedly connected between one end of the movable column that extends into the annular groove and the inner wall of the annular groove. The outer side of the second ring cylinder has multiple slots that are evenly distributed in a ring. The annular groove has multiple arc blocks that are slidably connected to the corresponding slots. An L-shaped rod is fixedly connected between one side of the gear ring and the arc block inside the corresponding slot.

[0027] The beneficial effects of this invention are:

[0028] 1. This invention creates multiple evenly distributed annular slots at one end edge of the ring blade, making the ring blade a cutting blade that combines a toothed edge and a circular edge, achieving dual-purpose cutting. At the same time, by designing a specially structured indexing slot, the toothed edges between two adjacent indexing points are staggered. When installing the blade, the first and second edges on the bodies of two adjacent blades correspond to each other, thereby improving the cutting effect of the toothed edge.

[0029] 2. This invention uses a rack that advances synchronously with the slide to drive gear one and the core column to rotate synchronously. The cutter head that rotates with the core column will start to perform internal threading after entering the area inside the mounting ring. At the same time, during the slide advance, the lifting column enters the guide groove on the ring cylinder one to drive the ring cylinder one to rotate. Meanwhile, the pushing component two compresses the gas inside the square cylinder two to drive the pushing component one to move the lifting plate downward, so that the grinding arc plate is in close contact with the ring edge on the cutter body for grinding. This achieves synchronous internal threading and ring edge grinding, improving processing efficiency.

[0030] 3. This invention utilizes a rotating gear to drive a gear ring to rotate, which in turn causes an arc block that rotates synchronously with the gear ring to push a movable column to lift the push rod, thus securing the target blade body. This makes assembly and disassembly convenient and quick. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the indexable blade of the present invention;

[0033] Figure 2 This is an unfolded view of the indexable blade of the present invention;

[0034] Figure 3This is a first-view overall structural schematic diagram of the grinding device of the present invention;

[0035] Figure 4 This is a second-view overall structural schematic diagram of the grinding device of the present invention;

[0036] Figure 5 This is a schematic diagram of the tapping section of the grinding device of the present invention;

[0037] Figure 6 This is the present invention. Figure 5 Schematic diagram of part A' in the middle;

[0038] Figure 7 This is a schematic diagram of the ring-blade grinding section of the grinding device of the present invention;

[0039] Figure 8 This is the present invention. Figure 7 Overall top view;

[0040] Figure 9 This is the present invention. Figure 8 Schematic diagram of the cross-sectional structure along the AA direction;

[0041] Figure 10 This is the present invention. Figure 8 Schematic diagram of the cross-sectional structure along the BB direction;

[0042] Figure 11 This is a schematic diagram of the blade clamping mechanism of the grinding device of the present invention;

[0043] Figure 12 This is a schematic diagram of the actual application of the grinding device of the present invention.

[0044] The attached figures are labeled as follows: 1. Ring cutter holder; 2. Ring blade; 3. Indexing slot; 4. Mounting ring; 5. Chip removal groove; 6. Sealing ring; 7. Base; 8. Tapping section; 81. Feeding assembly; 811. Base; 812. Slide table; 813. T-shaped frame; 814. Cam plate; 815. Shaft; 816. Moving seat; 82. Tapping assembly; 821. Stand; 822. Crossbar; 823. Slide table; 824. Rack; 825. Core column; 826. Restriction ring one; 827. Cutting head; 828. Gear one; 9. Ring blade grinding section; 91. Indexing drive assembly; 911. Straight plate; 912. Lifting column; 913. Ring plate; 914. Spring one; 915. Side plate; 916. Bracket; 917. Round plate; 918. Restriction ring two; 919. Ring 9110. Cylinder 1; 92. Guide groove; 92. Grinding feed assembly; 921. L-shaped seat; 922. Lifting plate; 923. Grinding arc plate; 924. Guide post; 925. Pushing component 1; 9251. Square cylinder 1; 9252. Push plate 1; 9253. Push post 1; 9254. Spring 2; 926. Pushing component 2; 9261. Square cylinder 2; 9262. Push post 2; 9263. 927. Push plate 2; 928. Pressure strip; 929. Air passage; 920. Annular groove; 10. Blade clamping mechanism; 101. Ring cylinder 2; 102. Annular groove; 103. Movable column; 104. Spring 3; 105. Push rod; 106. Rod support; 107. Through groove; 108. Arc block; 109. L-shaped rod; 1010. Gear ring; 1011. Gear 2; 11. Support platform. Detailed Implementation

[0045] 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.

[0046] The indexable insert of this invention belongs to a type of milling tool and is used for drilling target workpieces. It is generally used as an accessory tool for milling machine tools.

[0047] The grinding device of this invention belongs to a part of the intelligent manufacturing equipment industry. It is a type of grinding and polishing equipment, mainly used to grind the rotating surface of metal cutting tools while simultaneously tapping the threads on the rotating surface.

[0048] Example 1

[0049] Refer to the instruction manual appendix Figure 1-2This embodiment is the first embodiment of the present invention, providing a carbide indexable insert. The indexable insert includes an insert body, which includes a frustum-shaped ring holder 1, a ring cutting edge 2 fixedly mounted on one end of the ring holder 1 by a locking bolt, multiple chip removal grooves 5 evenly distributed in a ring on the outer circumferential surface of the ring holder 1, a sealing ring 6 threaded to the outer side of one end of the ring holder 1, and a mounting ring 4 fixedly embedded in the centerline of the ring holder 1. The end of the ring holder 1 on which the ring cutting edge 2 is mounted has an indexing groove 3 concentrically arranged with the ring holder 1. The inner side of the mounting ring 4 is tapped with internal threads. The sealing ring 6 can be used to stop and limit the locking bolt that fixes the ring cutting edge 2 on the ring holder 1 to prevent the ring cutting edge from loosening, and the chip removal grooves 5 are set as arc-shaped structures to better guide the discharge of waste chips during the cutting process.

[0050] Furthermore, multiple evenly distributed annular slots are provided at one end edge of the ring blade 2, making the ring blade 2 a cutting edge that combines a toothed edge and a circular edge. When using the toothed edge for feed cutting (i.e., cutting workpieces with relatively hard materials), the surface-to-surface cutting can be converted into point-to-surface cutting, reducing damage to the ring blade 2 (such as chipping). Conversely, the circular edge can be used for cutting, making it a dual-purpose tool. Moreover, during the cutting process using the ring blade 2, neither the toothed edge nor the circular edge will affect the other cutting edge.

[0051] Furthermore, the indexing slot 3 is configured as follows: Figure 2 The four-corner structure shown enables precise indexing of the indexable insert. The indexing slot 3 of this structure allows the cutting edges between two adjacent indexing points to be staggered, that is, the ring cutting edge 2 is divided into alternating cutting edge one and cutting edge two. When the indexable insert is installed on the tool holder, it is installed in a double or four-piece equidistant manner, and the cutting edge one and cutting edge two on two adjacent insert bodies correspond to each other. That is, when the machining cutting edge of the current installation position is cutting edge one, the machining cutting edge of the adjacent position is cutting edge two.

[0052] Example 2

[0053] Refer to the instruction manual appendix Figures 3-5 This embodiment is the second embodiment of the present invention, which provides a grinding device for a carbide indexable cutting tool. The grinding device includes: a base 7, a support table 11 fixedly installed on the top of the base 7, and a tapping part 8 disposed on the top of the base 7. The tapping part 8 includes a push assembly 81 installed on the top of the support table 11 and a tapping assembly 82 installed between the base 7 and the support table 11.

[0054] It should be noted that when tapping the internal thread on the inner side of the mounting ring 4 of the indexable insert, the threading assembly 82 is driven by the push assembly 81 to reciprocate and retract, thus completing the feed and retraction of the tool during the threading process.

[0055] Furthermore, such as Figures 4-5 As shown, the propulsion assembly 81 includes a base 811 fixed to the top of the support platform 11 and a cam plate 814 disposed on the top of the support platform 11. A slide table 812 is slidably mounted on the top of the base 811. Specifically, the base 811 and the slide table 812 are installed using a dovetail structure to ensure the stability of the feed and retraction during the tapping process. A T-shaped frame 813 is fixedly mounted on one side of the slide table 812. A shaft 815 is fixedly mounted on both opposite sides of the cam plate 814. The shaft 815 located at the bottom of the cam plate 814 is rotatably mounted to the support platform 11 through a bearing. The shaft 815 is driven to rotate by a drive motor installed at the bottom of the support platform 11. A movable seat 816 slidably mounted inside the T-shaped frame 813 is movably sleeved on the outside of the shaft 815 located at the top of the cam plate 814.

[0056] It should be noted that during the process of driving the tapping assembly 82 to feed and retract, the cam plate 814 is driven to rotate by the drive motor. When the cam plate 814 rotates, it will move the moving seat 816 to slide inside the T-shaped frame 813. The position change of the moving seat 816 inside the T-shaped frame 813 drives the slide table 812 to reciprocate on the base 811, thus completing the feed and retraction in the tapping process.

[0057] Furthermore, such as Figures 4-5 As shown, the tapping assembly 82 includes two uprights 821 fixed to the top of the base 7, a crossbar 822 fixedly connected between the two uprights 821, a slide block 823 movably sleeved on the outside of the crossbar 822, and a rack 824 fixedly connected to the top of the slide block 823.

[0058] The tapping assembly 82 also includes a core post 825 that is rotatably mounted on the top of the slide table 812. A limiting ring 826 is fixedly sleeved on the outside of the core post 825 to prevent the core post 825 from shifting. A cutting head 827 is fixedly mounted on the end of the core post 825 near the ring cutting edge grinding part 9. A gear 828 is also fixedly sleeved on the outside of the core post 825. A limiting groove is opened on the top of the slide table 812, which is directly opposite to the gear 828. The end of the rack 824 away from the slide 823 is slidably connected to the inside of the limiting groove. The limiting groove and the rack 824 are also installed using a dovetail structure. At the same time, the crossbar 822 is inclined relative to the direction of movement of the core post 825. During the reciprocating motion of the slide 823 along the crossbar 822, the rack 824 always remains slidably connected to the inside of the limiting groove.

[0059] It should be noted that during the process of driving the tapping assembly 82 to tap the internal thread of the mounting ring 4, the slide table 812 is fed by the push assembly 81. During this process, as the slide table 812 moves along the axial direction of the core column 825, it drives the rack 824, which is slidably mounted on the slide table 812, to move synchronously. At the same time, the slide block 823 also moves along the axial direction of the crossbar 822 and, under the restriction of the limiting groove, pushes the rack 824 to move radially along the core column 825, thereby driving the gear 828 to rotate and causing the core column 825 to rotate. This drives the cutter head 827 to rotate while feeding, thus achieving the purpose of tapping.

[0060] Furthermore, such as Figures 3-9 As shown, the ring blade grinding part 9 is also provided on the top of the base 7. The ring blade grinding part 9 includes a rotation drive assembly 91 installed between the support platform 11 and the propulsion assembly 81. The rotation drive assembly 91 includes a side plate 915, a mounting post fixed on one side of the side plate 915, and a ring cylinder 919 movably sleeved on the outside of the mounting post. The blade clamping mechanism 10 is fixedly installed at the end of the mounting post away from the side plate 915.

[0061] Furthermore, the indexing drive assembly 91 includes a straight plate 911 fixedly connected to one side of the slide table 812. A lifting column 912 is vertically movably inserted through the end of the straight plate 911 away from the slide table 812. The lifting column 912 is configured as a capsule-shaped structure. A ring plate 913 is fixedly sleeved on the outside of the lifting column 912 at the position above the straight plate 911. A spring 914 is fixedly sleeved on the outside of the lifting column 912 to connect the ring plate 913 and the straight plate 911. Initially, the bottom end of the lifting column 912 moves in contact with the upper surface of the support platform 11, and the spring 914 is in a stretched state in this state.

[0062] The indexing drive assembly 91 also includes a bracket 916 fixed to the top of the base 7 and a circular plate 917 fixed to one end of the mounting column. Specifically, the bracket 916 consists of a right-angled trapezoidal plate and four support plates fixed to the top of the right-angled trapezoidal plate. The upper end surfaces of the four support plates form an arc-shaped support cavity with a diameter equal to that of the outer circumference of the ring cylinder 919, and a passageway for the straight plate 911 to pass through is formed between the four support plates. A through hole is provided on the side plate 915, which is directly opposite to the passageway, to prevent the side plate 915 from obstructing the advancement process of the straight plate 911. The lower end surface of the straight plate 911 is aligned with the upper end surface of the right-angled trapezoidal plate. The ring cylinder 919 is horizontally coplanar and is movably connected to the arc-shaped cavity at the top of the bracket 916. Two limiting rings 918 are fixedly sleeved on the outside of the mounting column to prevent the ring cylinder 919 from shifting. A guide groove 9110 is provided on the outside of the ring cylinder 919. The guide groove 9110 is composed of a straight groove and a spiral groove that are connected. The straight groove is located at one end near the blade clamping mechanism 10, so that when the inclined surface of the right-angled trapezoidal plate is used to guide the lifting column 912 to rise, the upper end of the lifting column 912 can smoothly enter the interior of the guide groove 9110.

[0063] It should be noted that, in the initial state, the straight groove on the outer guide groove 9110 of the annular cylinder 919 is in the position as follows: Figure 7 As shown in the lower end position, during the rotation of the drive ring cylinder 919, the straight plate 911 is pushed towards the bracket 916 by the feed slide 812. During this process, the bottom end of the lifting column 912 initially moves against the upper surface of the support platform 11. When the straight plate 911 advances to the point where the bottom end of the lifting column 912 contacts the right-angled trapezoidal plate, as the straight plate 911 continues to advance, the lifting column 912 will move against the inclined surface of the right-angled trapezoidal plate. During this process, the lifting column 912... The column 912 will gradually move upward under the push of the right-angled trapezoidal plate, and the lifting column 912 will gradually enter the straight groove on the guide groove 9110 during the upward movement. As the straight plate 911 continues to advance, the top of the lifting column 912 will transition from the straight groove to the spiral groove. Then, with the continued advancement of the straight plate 911, the top of the lifting column 912 will advance inside the spiral groove. Since the lifting column 912 advances in a straight line, the feeding lifting column 912 will drive the ring cylinder 919 to rotate.

[0064] Furthermore, such as Figures 4-5 and Figures 7-10As shown, the grinding feed assembly 92 is installed on the ring cylinder 919. The grinding feed assembly 92 includes an L-shaped seat 921 fixed to one end of the ring cylinder 919 and a guide post 924 fixed to the top of the circumferential side of the ring cylinder 919. A lifting plate 922 is movably sleeved between the L-shaped seat 921 and the guide post 924. A grinding arc plate 923 is fixedly connected to one end of the lifting plate 922. A pusher 925 is fixedly installed on the top of the lifting plate 922. A pusher 926 is fixedly installed between the side plate 915 and the slide table 812.

[0065] The output end of the pusher 925 is fixedly connected to a pressure strip 927, which is fixedly connected to the lifting plate 922. An air passage 928 is provided at the axis of the mounting column. Annular grooves 929 are provided on the outer side of the mounting column and the inner side of the ring cylinder 919. The two annular grooves 929 are arranged opposite each other. One end of the air passage 928 is connected to the annular groove 929 on the mounting column.

[0066] Furthermore, the pusher 925 includes a square tube 9251 fixedly mounted on the top of the lifting plate 922. A push plate 9252 is movably connected inside the square tube 9251. A sealing ring is fixedly wrapped around the circumferential side of the push plate 9252, making the push plate 9252 a piston. A push column 9253 that movably passes through the square tube 9251 is fixedly connected to the bottom of the push plate 9252. A pressure strip 927 is fixedly connected to the bottom end of the push column 9253. A spring 9254 that is fixedly connected to the inner bottom end face of the push plate 9252 and the square tube 9251 is sleeved on the outside of the push column 9253. An air pipe 9254 is connected between the square tube 9251 and the annular groove 929 on the ring tube 919. A one-way valve is installed on the air pipe 9251. An overflow pipe is also connected to the outside of the square tube 9251. The inner diameter of the overflow pipe is smaller than the inner diameter of the air pipe 9251.

[0067] The second pusher 926 includes a square tube 9261 fixed to the top of the support platform 11. A pusher plate 9263 is movably connected inside the square tube 9261. A sealing ring is also fixedly wrapped around the circumferential side of the pusher plate 9263, making the pusher plate 9263 a piston. A pusher column 9262 that movably passes through the square tube 9261 is fixedly connected to one side of the pusher plate 9263. An air pipe 2 is provided between the square tube 9261 and the air passage 928. An air supply pipe is also provided on the outside of the square tube 9261. A one-way valve is also installed on the air supply pipe and the air pipe 2. A push bar is fixedly connected between the end of the pusher column 9262 that extends to the outside of the square tube 9261 and the slide table 812.

[0068] It should be noted that before the straight plate 911 begins its advancing process, the push plate 9252 is pushed to the upper part of the square tube 9251 by the spring 9254, and the air outlet of the air pipe 9252 and the air inlet of the overflow pipe are located between the push plate 9252 and the top surface of the inner cavity of the square tube 9251. In this state, the spring 9254 is in a stretched state, that is, the grinding arc plate 923 and the ring edge 2 of the target blade body are in a state of compression contact (this state is intended to be set as the initial grinding state). During the grinding feed assembly 92's grinding of the ring edge 2 of the blade body to be ground, as the straight plate 911 is gradually advanced, the slide table 812... The synchronously moving push bar will push the push column 2 9262 to retract into the square tube 2 9261. During this process, the push column 2 9262 retracting into the square tube 2 9261 will push the push plate 2 9263 to compress the air inside the square tube 2 9261 and force it into the air pipe 2, then into the air passage 928, then into the corresponding annular groove 929, then into the air pipe 1, and finally into the square tube 1 9251. While the air entering the square tube 1 9251 pushes the push plate 1 9252 downward, a small amount of air will be discharged from the overflow pipe. Since the air intake is greater than the air output, the push plate 1 9252 continues to move downward under the action of compressed air.

[0069] During the process of using the air entering the square tube 9251 to push the push plate 9252 downward, the push plate 9252 will compress the spring 9254 downward, and push the push post 9253 installed at the bottom of the push plate 9252 out of the square tube 9251. The push post 9253, which gradually extends out of the square tube 9251, will push the pressure bar 927 downward. The downward movement of the pressure bar 927 will push the lifting plate 922 downward, so that the grinding arc plate 923 and the ring edge of the blade body are aligned. As the contact pressure between the two gradually increases, the rough grinding of the ring blade 2 on the target blade body is completed. During the process of the contact pressure between the grinding arc plate 923 and the ring blade 2 to be ground gradually increasing, the lifting column 912 installed on the straight plate 911 is lifted to the maximum extent by the right-angle trapezoidal plate and enters the guide groove 9110. Then, as the straight plate 911 continues to advance, the lifting column 912 will drive the ring cylinder 919 to rotate during the advancement, thereby completing the grinding of the rotating surface of the ring blade 2.

[0070] When the lifting column 912 reaches its maximum feed, the slide 812 moves exactly to the right (see...). Figure 5The slide table 812 is pushed to its maximum extent, and then, as the cam plate 814 continues to rotate, the slide table 812 will drive the straight plate 911 to retract. During this process, the retracting lifting column 912 will drive the ring cylinder 919 to rotate in the opposite direction, and drive the grinding arc plate 923 to grind the ring edge 2 of the target blade body in the opposite direction. In addition, during this process, the retraction of the slide table 812 will pull the push column 9262 to gradually extend out of the square cylinder 9261. The push plate 9263, which moves synchronously with the push column 9262, will change the gas space inside the square cylinder 9261 (i.e., the push plate 9263 and the inside of the square cylinder 9261). The space between the inner ends of the connecting air pipe 2 changes to open the one-way valve on the air supply pipe, and the air supply pipe replenishes the next round of compressed air into the square tube 2 9261. Since the square tube 1 9251, which has lost air supply, is always in the exhaust state, the push plate 1 9252 will quickly move upward to the initial state under the restoring force of the spring 2 9254, so that the grinding arc plate 923 and the ring edge 2 of the target blade body are in a constant pressure compression contact state, thereby completing the fine grinding of the ring edge 2 of the target blade body. Then, after the next round of grinding blade body is installed, a new round of grinding action is performed.

[0071] Example 3

[0072] Refer to the instruction manual appendix Figure 4 and Figure 11 This embodiment is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the blade clamping mechanism 10 includes an annular cylinder 101 fixedly connected to one end of the circular plate 917 and a gear 1011 rotatably connected to one end of the circular plate 917 via a rotating rod. The gear 1011 is driven to rotate by a servo motor installed at the other end of the circular plate 917. An annular groove 102 is provided at one end of the annular cylinder 101. A gear ring 1010 that meshes with the gear 1011 is rotatably connected to the outside of the annular cylinder 101 via a bearing.

[0073] Multiple rod supports 106 evenly distributed in a ring are fixedly provided on the circumferential side of the ring cylinder 101. Each rod support 106 has a push rod 105 inside. A movable column 103 is fixedly connected to the outside of the push rod 105, which movably passes through the corresponding rod support 106. One end of the movable column 103 extends into the annular groove 102 and is fixedly connected to the inner wall of the annular groove 102 with a spring 3 104. When the spring 3 104 is in its natural state, the push rod 105 is exactly in contact with the inner side of the rod support 106. In this state, the push rod 105 and the indexing groove 3 are in contact. The inner sides of the corresponding angles on the upper part are separated. Multiple annular slots 107 are evenly distributed on the outer side of the second ring cylinder 101. Multiple arc blocks 108 are slidably connected to the corresponding slots 107 inside the annular groove 102. The part of the arc block 108 inside the annular groove 102 facing the corresponding movable column 103 has an arc surface structure, which makes it easy to lift the movable column 103 in the direction of travel. An L-shaped rod 109 is fixedly connected between one side of the gear ring 1010 and the arc block 108 inside the corresponding slot 107.

[0074] It should be noted that during the clamping process of the assembled blade body, the target blade body is placed on the outside of the ring cylinder 101, and the indexing groove 3 on the blade body corresponds to the push rod 105 on the ring cylinder 101. Then, the servo motor drives the gear 1011 to rotate, and the rotating gear 1011 drives the gear ring 1010 to rotate. The arc block 108, which rotates synchronously with the gear ring 1010, will gradually squeeze the movable column 103 in the corresponding direction of travel during the rotation. The movable column 103 pushes the push rod 105 closer to the inner side of the corresponding angle on the indexing groove 3 and clamps it. During this process, the lifted movable column 103 will stretch the corresponding spring 104 to ensure that after the clamping state is released, the push rod 105 can automatically return to the corresponding rod support 106, waiting for the next round of clamping of the target blade body.

[0075] The working principle of the above-mentioned grinding device is as follows: First, the target blade body is fitted onto the outside of the ring cylinder 101, and the gear 1011 is driven to rotate by a servo motor. The rotating gear 1011 drives the gear ring 1010 to rotate, and the arc block 108, which rotates synchronously with the gear ring 1010, pushes the movable column 103 to lift the push rod 105, thus clamping the target blade body. Then, the cam plate 814 is driven to rotate, which pushes the T-shaped frame 813 to move the slide table 812 closer to the ring blade grinding part 9. During this process, the advancement of the slide table 812 will synchronously drive the rack 824 to drive the gear 1 828 to rotate, so that the core column 825 rotates while advancing, and the core column 825 rotates with it. After the cutting head 827 enters the area inside the mounting ring 4, it will begin to perform the internal threading action. During the advancement of the slide table 812, the moving straight plate 911 will allow the lifting column 912 to enter the guide groove 9110 on the ring cylinder 919 and drive the ring cylinder 919 to rotate. At the same time, during the advancement of the slide table 812, the second pusher 926 will drive the first pusher 925 to move by compressing the gas inside the second square cylinder 9261, thereby driving the lifting plate 922 to move downward, so that the grinding arc plate 923 is in close contact with the ring blade 2 on the blade body for grinding. This achieves simultaneous internal threading and ring blade 2 grinding, improving processing efficiency.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A cemented carbide indexable insert, characterized in that, The indexable cutting tool includes: The blade body includes a ring cutter holder (1), a ring blade (2) fixedly installed at one end of the ring cutter holder (1) by a locking bolt, a plurality of chip removal grooves (5) evenly distributed in a ring on the outer circumferential surface of the ring cutter holder (1), a sealing ring (6) threaded to the outer side of one end of the ring cutter holder (1), and a mounting ring (4) fixedly embedded in the centerline of the ring cutter holder (1) in a through-type manner. The end of the ring cutter holder (1) on which the ring blade (2) is installed is provided with an indexing groove (3) concentrically set with the ring cutter holder (1), and the inner side of the mounting ring (4) is tapped with internal threads.

2. A grinding apparatus for a cemented carbide indexable insert, used to process the insert body as described in claim 1, characterized in that, The grinding apparatus includes: The base (7) has a support platform (11) fixedly installed on its top; The tapping part (8) includes a push assembly (81) mounted on the top of the support platform (11) and a tapping assembly (82) mounted between the base (7) and the support platform (11); The ring-blade grinding section (9) includes a rotation drive assembly (91) installed between the support platform (11) and the propulsion assembly (81). The rotation drive assembly (91) includes a side plate (915), a mounting post fixed to one side of the side plate (915), and a ring cylinder (919) movably sleeved on the outside of the mounting post. A grinding feed assembly (92) is installed on the ring cylinder (919). Blade clamping mechanism (10); the blade clamping mechanism (10) is fixedly installed at the end of the mounting column away from the side plate (915).

3. The grinding apparatus for a cemented carbide indexable cutting tool according to claim 2, characterized in that, The propulsion assembly (81) includes a base (811) fixed on the top of the support platform (11) and a cam plate (814) disposed on the top of the support platform (11). A slide (812) is slidably installed on the top of the base (811). A T-shaped frame (813) is fixed on one side of the slide (812). A shaft (815) is fixed on both opposite sides of the two ends of the cam plate (814). The shaft (815) located at the bottom of the cam plate (814) is rotatably installed with the support platform (11) through a bearing. A movable seat (816) slidably installed inside the T-shaped frame (813) is movably sleeved on the outside of the shaft (815) located at the top of the cam plate (814).

4. The grinding apparatus for a cemented carbide indexable cutting tool according to claim 3, characterized in that, The tapping assembly (82) includes two uprights (821) fixed on the top of the base (7), a crossbar (822) fixedly connected between the two uprights (821), a slide (823) movably sleeved on the outside of the crossbar (822), and a rack (824) fixedly connected to the top of the slide (823).

5. The grinding apparatus for a cemented carbide indexable cutting tool according to claim 4, characterized in that, The tapping assembly (82) also includes a core column (825) that is rotatably mounted on the top of the slide table (812) in a through-type manner. A limiting ring (826) is fixedly sleeved on the outside of the core column (825) to prevent the core column (825) from shifting. A cutting head (827) is fixedly installed on one end of the core column (825) near the ring edge grinding part (9). A gear (828) is also fixedly sleeved on the outside of the core column (825). A limiting groove is opened on the top of the slide table (812) that is directly opposite to the gear (828). The end of the rack (824) away from the slide (823) is slidably connected to the inside of the limiting groove.

6. The grinding apparatus for a cemented carbide indexable cutting tool according to claim 3, characterized in that, The indexing drive assembly (91) includes a straight plate (911) fixedly connected to one side of the slide table (812). A lifting column (912) is vertically movably inserted through the end of the straight plate (911) away from the slide table (812). A ring plate (913) is fixedly sleeved on the outside of the lifting column (912) at the position above the straight plate (911). A spring (914) is fixedly sleeved on the outside of the lifting column (912) to connect the ring plate (913) and the straight plate (911).

7. A grinding apparatus for a cemented carbide indexable cutting tool according to claim 2, characterized in that, The indexing drive assembly (91) also includes a bracket (916) fixed to the top of the base (7) and a circular plate (917) fixed to one end of the mounting column. The first ring cylinder (919) is movably connected to the top of the bracket (916). Two limiting rings (918) are fixedly sleeved on the outside of the mounting column to prevent the first ring cylinder (919) from shifting. A guide groove (9110) is opened on the outside of the first ring cylinder (919).

8. A grinding apparatus for a cemented carbide indexable cutting tool according to claim 3, characterized in that, The grinding feed assembly (92) includes an L-shaped seat (921) fixed to one end of the ring cylinder (919) and a guide post (924) fixed to the top of the circumferential side of the ring cylinder (919). A lifting plate (922) is movably sleeved between the L-shaped seat (921) and the guide post (924). A grinding arc plate (923) is fixedly connected to one end of the lifting plate (922). A pusher (925) is fixedly installed on the top of the lifting plate (922). A pusher (926) is fixedly installed between the side plate (915) and the slide table (812). The output end of the pusher (925) is fixedly connected to a pressure strip (927), the pressure strip (927) is fixedly connected to the lifting plate (922), an air passage (928) is provided at the axis of the mounting column, and an annular groove (929) is provided on the outer side of the mounting column and the inner side of the ring cylinder (919). The two annular grooves (929) are arranged opposite each other, and one end of the air passage (928) is connected to the annular groove (929) on the mounting column.

9. A grinding apparatus for a cemented carbide indexable cutting tool according to claim 8, characterized in that, The pusher (925) includes a square tube (9251) fixedly mounted on the top of the lifting plate (922), a push plate (9252) movably connected inside the square tube (9251), a push column (9253) movably passing through the square tube (9251) fixedly connected to the bottom of the push plate (9252), a pressure strip (927) fixedly connected to the bottom end of the push column (9253), a spring (9254) fixedly connected to the push plate (9252) and the bottom inner side of the square tube (9251) on the outside of the push column (9253), and an air pipe (9254) communicating between the square tube (9251) and the annular groove (929) on the ring tube (919). The second pusher (926) includes a square tube (9261) fixed to the top of the support platform (11). A push plate (9263) is movably connected inside the square tube (9261). A push column (9262) that movably passes through the square tube (9261) is fixedly connected to one side of the push plate (9263). An air pipe (9262) is provided between the square tube (9261) and the air passage (928). A push bar is fixedly connected between the end of the push column (9262) extending to the outside of the square tube (9261) and the slide (812).

10. A grinding apparatus for a cemented carbide indexable cutting tool according to claim 7, characterized in that, The blade clamping mechanism (10) includes a ring cylinder (101) fixedly connected to one end of a circular plate (917) and a gear (1011) rotatably connected to one end of a circular plate (917) via a rotating rod. One end of the ring cylinder (101) is provided with an annular groove (102), and a gear ring (1010) that meshes with the gear (1011) is rotatably connected to the outside of the ring cylinder (101) via a bearing. The second ring cylinder (101) is fixedly provided with a plurality of rod supports (106) evenly distributed in a ring on its circumferential side. Each rod support (106) is provided with a top rod (105) inside. The top rod (105) is fixedly connected to a movable column (103) that movably passes through the corresponding rod support (106). One end of the movable column (103) extending into the annular groove (102) is fixedly connected to the inner wall of the annular groove (102) with a spring three (104). The second ring cylinder (101) is provided with a plurality of through slots (107) evenly distributed in a ring on its outer side. The annular groove (102) is provided with a plurality of arc blocks (108) that are slidably connected to the inside of the corresponding through slot (107). An L-shaped rod (109) is fixedly connected between one side of the gear ring (1010) and the arc block (108) inside the corresponding through slot (107).

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