A three-edge spiral milling cutter and its automatic milling machine

Abstract

The present invention relates to the technical field of metal material cutting, and specifically relates to a three-edge spiral milling cutter and its automatic milling machine. It includes an operation box with moving grooves opened on both sides of the operation box. A filter plate is placed jointly in the moving grooves on both sides. Springs are installed jointly between the filter plate and the moving grooves. Through grooves are provided on the operation box on both sides of the filter plate. A collection bin detachably connected to the operation box is provided outside the through grooves. The four walls of the operation box block the metal chips generated during the cutting of the workpiece, effectively avoiding the situation of metal chips splashing during the cutting of the metal workpiece. And through the setting of the collection bin, the metal chips generated during the cutting of the workpiece on the filter plate can be collected. At the same time, the filter plate not only filters the coolant for recycling, but also can automatically separate the metal chips and the coolant. The disassembly of the replacement ring can quickly replace the three-edge spiral milling cutter.

Description

Technical Field

[0001] The present invention relates to the technical field of metal material cutting, and specifically relates to a three-edge spiral milling cutter and its automatic milling machine. Background Art

[0002] A milling machine, that is, a milling machine, mainly refers to a machine tool that processes various surfaces of a workpiece with a milling cutter. Usually, the rotational movement of the milling cutter is the main movement, and the movement of the workpiece and the milling cutter is the feed movement.

[0003] The prior art discloses a Chinese patent with the application number CN202410579045.2, a multi-station milling machine and its use method, and discloses that the dust collection mechanism realizes the effect of adsorbing and collecting processing debris while performing sharp cutting processing on the workpiece, and the loading and unloading mechanism realizes the effect of automatic loading and unloading.

[0004] The above device can additionally adopt an external dust collection mechanism during the collection of waste chips during processing, and at the same time, it cannot separate the waste liquid. During processing, it can only process cylindrical workpieces, but cannot meet the processing of plate-shaped workpieces. Moreover, when the milling cutter is working, since the working object is a metal material, the milling cutter often gets damaged, and the milling cutter generates a high temperature during operation. If it is directly replaced, it is easy to cause burns to the staff. Therefore, there is an urgent need for a milling machine that can quickly and conveniently replace the milling cutter. Summary of the Invention

[0005] The purpose of the present invention is to provide a three-edge spiral milling cutter and its automatic milling machine to solve the problems raised in the above background art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An automatic milling machine includes an operation box. Moving grooves are opened on both sides of the operation box. A filter plate is placed in the moving grooves on both sides. Springs are commonly installed between the filter plate and the moving grooves. Through grooves are opened on the operation box on both sides of the filter plate. A collection bin that is detachably connected to the operation box is provided outside the through grooves. A sliding groove is opened outside the operation box above the collection bin. A sliding frame is slidably installed in the sliding groove through an electric slider. A hydraulic rod is fixedly installed on the upper end surface of the sliding frame. A connecting frame is fixedly installed at the top of the hydraulic rod. Two guide rods arranged front and back are commonly installed between the two connecting frames. A moving frame is slidably installed between the two guide rods through an electric slider. A central plate is rotatably installed in the middle of the moving frame. An installation frame is rotatably installed on the lower end surface of the central plate through a motor. A replacement ring is detachably installed outside the installation frame. A three-edge spiral milling cutter is detachably installed on the lower end surface of the replacement ring.

[0008] Furthermore, a steering wheel rotatably connected to the moving frame is provided on one side of the central plate. The circular shaft at the center of the steering wheel passes through the moving frame and is fixedly connected to the central plate. An electric push rod fixedly connected to the moving frame is provided below the steering wheel, and a rack meshing with the steering wheel is fixedly installed at the telescopic end of the electric push rod.

[0009] Furthermore, a clamping plate penetrating the mounting frame is slidably mounted circumferentially in the middle of the mounting frame. The sides of the multiple clamping plates close to each other are beveled, and a spring is commonly connected between the clamping plate and the mounting frame. A tapered frame penetrating and sliding in the mounting frame is provided between the multiple clamping plates. The upper part of the tapered frame is always in contact with the clamping plate. A driven wedge block is fixedly installed at the top of the tapered frame. A pressing rod is slidably mounted on one side of the mounting frame. A spring is sleeved outside the pressing rod. A driving wedge block is fixedly installed at one end of the pressing rod penetrating the mounting frame.

[0010] Furthermore, a rotating ring is rotatably installed on the lower end surface of the central plate through an electric slider. A rotating plate is circumferentially rotatably installed inside the rotating ring. A protective frame is rotatably installed at one end of the rotating plate away from the rotating ring. The protective frame is arranged in an L shape and is slidably connected between the protective frame and the central plate.

[0011] Furthermore, a central rod penetrating the central plate is fixedly installed in the middle of the upper end surface of the mounting frame. A rectangular plate is fixedly installed on one side of the upper end surface of the central plate. A round rod is rotatably installed in the middle of the rectangular plate. Bevel gears meshing with each other are fixedly installed at one end of the round rod and the top end of the central rod. A cam is fixedly installed at the other end of the round rod. An air cylinder is fixedly installed at one end of the central plate. A piston rod is slidably installed in the middle of the air cylinder. An air blowing pipe is provided at the bottom of the air cylinder. A pressing frame is rotatably installed on one side of the cam. A cylinder on one side of the pressing frame slides inside the piston rod.

[0012] Furthermore, a liquid storage tank is fixedly installed on one side of the upper end surface of the central plate. The liquid storage tank is used for storing coolant. A spray head rotatably connected to the central plate is provided on one side of the liquid storage tank. A connecting pipe is commonly connected between the spray head and the liquid storage tank.

[0013] Furthermore, grooves are opened on both sides of the filter plate. Fixing rods are detachably installed in the grooves. Clamping rings intersecting with each other are rotatably installed at the tops of the two fixing rods. Buckles are alternately arranged between the two clamping rings. Air cylinders are fixedly installed in the middle of the two clamping rings. An arc-shaped block is fixedly installed at the telescopic end of the air cylinder.

[0014] Furthermore, mounting openings are opened at the four corners of the upper end surface of the operation box. Side frames are provided on both sides of the upper end surface of the filter plate. Electric push plates arranged in an inverted L shape are fixedly installed on both sides of the side frames. One end of the electric push plate away from the side frame is placed into the mounting opening. Two traction plates are commonly installed between the two side frames.

[0015] Further, a threaded rod is rotatably installed in the middle of the upper side of the side frame by a motor. Below the threaded rod, there is an L-shaped moving groove opened on the side frame. An adjusting frame is rotatably installed on the threaded rod in a threaded manner. One end of the adjusting frame is fixedly installed with an upper frame. The upper frame is set at a right angle, and the four upper frames are all arranged diagonally. A sliding rod is slidably installed on one side of the upper frame. The bottom of the sliding rod is fixedly installed with a lower frame. A spring is sleeved outside the sliding rod and the spring is located between the upper frame and the lower frame.

[0016] Further, the three-edge spiral milling cutter is detachably installed on the lower end surface of the replacement ring. The three-edge spiral milling cutter includes a cutter head. The cutter head has at least three cutting edges. A cutter bar is provided above the cutter head. The cutter head and the cutter bar are connected by bolts. The cutter head is positioned and connected to the cutter bar by a cross-shaped concave-convex groove.

[0017] The beneficial effects of the present invention:

[0018] 1. In the present invention, when the hydraulic rod retracts, the three-edge spiral milling cutter can press the filter plate against the spring to the bottom of the moving groove. At this time, the filter plate is located in the inner cavity of the working box. The four walls of the working box block the metal chips generated during the cutting of the workpiece, effectively avoiding the situation of metal chips splashing during the cutting of the metal workpiece. And through the setting of the collection bin, the metal chips generated during the cutting of the workpiece on the filter plate can be collected. At the same time, the filter plate not only filters the coolant for recycling, but also can automatically separate the metal chips and the coolant. By sliding the sliding frame in the sliding groove and at the same time cooperating with the moving frame to slide on the guide rod, the milling cutter can be quickly displaced. By rotating the center plate left and right on the mounting frame, it can also meet the cutting processing of the side wall of the cylindrical workpiece. By disassembling the replacement ring, the three-edge spiral milling cutter can be quickly replaced.

[0019] 2. In the present invention, the telescopic movement of the electric push rod drives the rack to move. When the rack moves, it drives the steering wheel to rotate, so as to make the center plate rotate. By rotating the center plate, the angle of the three-edge spiral milling cutter fixed on the mounting frame can be adjusted, so as to meet the adjustment of different cutting angles during the cutting of the three-edge spiral milling cutter. Compared with the existing device, the present invention can cut different types of workpieces such as plate-shaped and cylindrical. At the same time, the angle of the three-edge spiral milling cutter can be adjusted to realize cutting at different angles of the workpiece. And by rotating the center plate, the three-edge spiral milling cutter can also cut the side wall of the cylindrical workpiece.

[0020] 3. In the present invention, by pushing the pressing rod, the active wedge block squeezes the driven wedge block. At this time, the driven wedge block drives the conical frame to move downward. When the conical frame moves downward, the extrusion of the multiple clamping plates is cancelled. At this time, the clamping plates move out of the clamping grooves on the inner wall of the replacement ring under the action of the spring, and then the replacement ring can be taken out from the mounting frame.

[0021] 4. In the present invention, the electric slider is activated to drive the rotating ring to rotate. When the rotating ring rotates, it synchronously drives multiple rotating plates to rotate. When the rotating plates rotate, they push the protective frames. At this time, the multiple protective frames approach each other until they support and hold the replaced ring after installation. Through the arrangement of the protective frames, the replaced ring installed on the mounting frame can be protected, preventing the replaced ring from loosening when the milling cutter is working.

[0022] 5. When the motor is activated to drive the milling cutter to work in the present invention, it synchronously drives the central rod to rotate. When the central rod rotates, it drives the round rod to rotate through the bevel gear. When the round rod rotates, it synchronously drives the cam to rotate. When the cam rotates, it drives the piston rod to be compressed in the air cylinder through the pressing frame. Finally, the compressed gas in the air cylinder cools the surface of the milling cutter through the blowing pipe, thereby reducing the damage rate of the milling cutter.

[0023] 6. When the nozzle is activated in the present invention, the coolant in the liquid storage tank can be sprayed onto the surface of the milling cutter. On the one hand, it can cool the milling cutter, and on the other hand, it can also lubricate the workpiece during cutting, preventing the workpiece from being damaged during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0025] Figure 1 is the schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is the schematic diagram of the structure between the hydraulic rod and the moving frame of the present invention;

[0027] Figure 3 is the schematic diagram of the left - hand side structure between the moving frame and the central plate of the present invention;

[0028] Figure 4 is the schematic diagram of the right - hand side structure between the moving frame and the central plate of the present invention;

[0029] Figure 5 is the schematic diagram of the bottom - view structure between the replaced ring and the central plate of the present invention;

[0030] Figure 6 is the schematic diagram of the front - sectional structure of the mounting frame of the present invention;

[0031] Figure 7 is the schematic diagram of the inner - cavity structure of the mounting frame of the present invention;

[0032] Figure 8 is the schematic diagram of the structure between the side - frame and the electric push - plate of the present invention;

[0033] Figure 9 is a schematic structural diagram between the clamping ring and the fixing rod of the present invention;

[0034] Figure 10 is a schematic sectional structural diagram of a partial part of the operation box of the present invention;

[0035] Figure 11 is a schematic structural diagram of the replacement ring of the present invention;

[0036] Figure 12 is a schematic structural diagram of a three-edge spiral milling cutter on an automatic milling machine of the present invention;

[0037] Figure 13 is a schematic structural diagram of the cutting edge head of the present invention.

[0038] The reference signs in the figure are as follows:

[0039] 1, operation box; 10, filter plate; 11, collection bin; 12, carriage; 21, hydraulic rod; 22, connecting frame; 23, guide rod; 24, moving frame; 241, electric push rod; 242, steering wheel; 25, center plate; 26, mounting frame; 260, replacement ring; 261, clamping plate; 262, conical frame; 263, driven wedge block; 264, pressing rod; 265, driving wedge block; 27, rotating ring; 271, rotating plate; 272, protective frame; 28, center rod; 281, round rod; 282, cam; 283, air cylinder; 284, piston rod; 285, pressing frame; 29, liquid storage tank; 291, spray head; 31, fixing rod; 32, clamping ring; 33, air cylinder; 34, arc block; 41, side frame; 42, electric push plate; 43, traction plate; 44, threaded rod; 45, adjusting frame; 46, upper frame; 47, slide rod; 48, lower frame. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. [[ID=3,0]]

[0041] An automatic milling machine cuts a workpiece through a tool used in a lathe. The tool for processing the workpiece in the present invention is a three-edge spiral milling cutter. The present invention processes columnar or plate-shaped workpieces through the three-edge spiral milling cutter, and the three-edge spiral milling cutter can be quickly disassembled.

[0042] As Figures 1 - 13As shown in the figure, it includes a working box 1. Moving grooves are provided on both sides of the working box 1. A filter plate 10 is placed in the moving grooves on both sides. Springs are commonly installed between the filter plate 10 and the moving grooves. Through grooves are provided on the working box 1 on both sides of the filter plate 10. A collection bin 11 detachably connected to the working box 1 is provided outside the through grooves. A sliding groove is provided outside the working box 1 above the collection bin 11. A sliding frame 12 is slidably installed in the sliding groove through an electric slider. A hydraulic rod 21 is fixedly installed on the upper end surface of the sliding frame 12. A connecting frame 22 is fixedly installed at the top of the hydraulic rod 21. Two guiding rods 23 arranged front and back are commonly installed between the connecting frames 22 on both sides. A moving frame 24 is slidably installed between the two guiding rods 23 through an electric slider. A central plate 25 is rotatably installed in the middle of the moving frame 24. An installation frame 26 is rotatably installed on the lower end surface of the central plate 25 through a motor. A replacement ring 260 is detachably installed outside the installation frame 26. A three-edge spiral milling cutter is detachably installed on the lower end surface of the replacement ring 260.

[0043] When cutting a workpiece, by retracting the hydraulic rod 21, the three-edge spiral milling cutter can press the filter plate 10 against the spring to the bottom of the moving groove. At this time, the filter plate 10 is located in the inner cavity of the working box 1. The four walls of the working box 1 block the metal chips generated during the cutting of the workpiece, effectively avoiding the situation of metal chips splashing during the cutting of the metal workpiece. And through the setting of the collection bin 11, the metal chips generated during the cutting of the workpiece on the filter plate 10 can be collected. At the same time, the filter plate 2 not only filters the coolant for recycling, but also can automatically separate the metal chips and the coolant. By sliding the sliding frame 12 in the sliding groove and at the same time cooperating with the sliding of the moving frame 24 on the guiding rod 23, the milling cutter can be quickly displaced. By rotating the central plate 25 left and right on the installation frame 26, it can also meet the cutting process of the side wall of the cylindrical workpiece. By disassembling the replacement ring 260, the three-edge spiral milling cutter can be quickly replaced, solving the problem that the three-edge spiral milling cutter is damaged during operation and cannot be conveniently replaced due to the high temperature of the three-edge spiral milling cutter.

[0044] A steering wheel 242 rotatably connected to the moving frame 24 is provided on one side of the central plate 25. The circular shaft at the center of the steering wheel 242 passes through the moving frame 24 and is fixedly connected to the central plate 25. An electric push rod 241 fixedly connected to the moving frame 24 is provided below the steering wheel 242. A rack meshing with the steering wheel 242 is fixedly installed at the telescopic end of the electric push rod 241.

[0045] The motor is started to drive the mounting bracket 26 to rotate, causing the three-edge spiral milling cutter to rotate, thereby cutting the surface of the fixed workpiece. The electric push rod 241 expands and contracts to drive the rack to move. When the rack moves, it drives the steering wheel 242 to rotate, thereby causing the central plate 25 to rotate. By rotating the central plate 25, the angle of the three-edge spiral milling cutter fixed on the mounting bracket 26 can be adjusted, so as to meet the adjustment of different cutting angles during the cutting of the three-edge spiral milling cutter. Compared with the existing device, the present invention can cut different types of workpieces such as plate-shaped and columnar ones. At the same time, the angle of the three-edge spiral milling cutter can be adjusted to realize cutting at different angles for the workpiece. And by rotating the central plate 25, the three-edge spiral milling cutter can also cut the side wall of the columnar workpiece, making the use range of the entire milling machine wider.

[0046] A clamping plate 261 penetrating the mounting bracket 26 is circumferentially and slidably installed in the middle of the mounting bracket 26. One side of the plurality of clamping plates 261 close to each other is inclined, and a spring is jointly connected between the clamping plate 261 and the mounting bracket 26. A conical frame 262 penetrating and sliding on the mounting bracket 26 is provided between the plurality of clamping plates 261. The upper part of the conical frame 262 is always in contact with the clamping plate 261. A driven wedge block 263 is fixedly installed at the top of the conical frame 262. A pressing rod 264 is slidably installed on one side of the mounting bracket 26. A spring is sleeved outside the pressing rod 264. An active wedge block 265 is fixedly installed at one end of the pressing rod 264 penetrating the mounting bracket 26.

[0047] Since the temperature of the three-edge spiral milling cutter is relatively high during operation, when replacing the damaged milling cutter, directly contacting the milling cutter is likely to cause harm to the staff. Compared with the existing device, the present invention installs the milling cutter on the replacement ring 260. By disassembling the replacement ring 260, the milling cutter can be quickly replaced, and the staff does not need to contact the high-temperature milling cutter, avoiding scalding the staff by the high-temperature milling cutter.

[0048] When disassembling the replacement ring 260, push the pressing rod 264 to make the active wedge block 265 squeeze the driven wedge block 263. At this time, the driven wedge block 263 drives the conical frame 262 to move downward. When the conical frame 262 moves downward, the extrusion of the plurality of clamping plates 261 is cancelled. At this time, the clamping plates 261 move out of the card slots on the inner wall of the replacement ring 260 under the action of the spring, and then the replacement ring 260 can be taken out from the mounting bracket 26.

[0049] When installing the replacement ring 260 on the mounting bracket 26, after aligning the replacement ring 260 and the mounting bracket 26 coaxially, move the replacement ring 260 upward. When the replacement ring 260 moves upward, it synchronously squeezes the conical frame 262 to move upward. After the conical frame 262 moves upward, it pushes the plurality of clamping plates 261 until the clamping plates 261 move into the card slots on the inner wall of the replacement ring 260, thereby realizing the quick installation of the replacement ring 260 and the milling cutter.

[0050] The lower end surface of the central plate 25 is rotationally installed with a rotating ring 27 through an electric slider. The inner side of the rotating ring 27 is rotationally installed with a rotating plate 271 in a circumferential direction. One end of the rotating plate 271 away from the rotating ring 27 is rotationally installed with a protective frame 272. The protective frame 272 is arranged in an L shape and is slidably connected between the protective frame 272 and the central plate 25.

[0051] The electric slider is started to drive the rotating ring 27 to rotate. When the rotating ring 27 rotates, it synchronously drives a plurality of rotating plates 271 to rotate. When the rotating plates 271 rotate, they push the protective frames 272. At this time, the plurality of protective frames 272 approach each other until they support and hold the installed replacement ring 260. Through the arrangement of the protective frames 272, the replacement ring 260 installed on the mounting frame 26 can be protected, avoiding the loosening of the replacement ring 260 during the operation of the milling cutter.

[0052] In the middle of the upper end surface of the mounting frame 26, a central rod 28 penetrating the central plate 25 is fixedly installed. On one side of the upper end surface of the central plate 25, a rectangular plate is fixedly installed. In the middle of the rectangular plate, a round rod 281 is rotationally installed. One end of the round rod 281 and the top end of the central rod 28 are fixedly installed with bevel gears that mesh with each other. The other end of the round rod 281 is fixedly installed with a cam 282. One end of the central plate 25 is fixedly installed with an air cylinder 283. A piston rod 284 is slidably installed in the middle of the air cylinder 283. A blowing pipe is provided at the bottom of the air cylinder 283. One side of the cam 282 is rotationally installed with a pressing frame 285. The cylinder on one side of the pressing frame 285 slides in the piston rod 284.

[0053] When the motor is started to drive the milling cutter to work, it synchronously drives the central rod 28 to rotate. When the central rod 28 rotates, it drives the round rod 281 to rotate through the bevel gear. When the round rod 281 rotates, it synchronously drives the cam 282 to rotate. When the cam 282 rotates, it drives the piston rod 284 to be compressed in the air cylinder 283 through the pressing frame 285. Finally, the compressed gas in the air cylinder 283 cools the surface of the milling cutter through the blowing pipe, thereby reducing the damage rate of the milling cutter.

[0054] On one side of the upper end surface of the central plate 25, a liquid storage tank 29 is fixedly installed. The liquid storage tank 29 is used to store coolant. On one side of the liquid storage tank 29, a spray head 291 rotationally connected to the central plate 25 is provided. A connecting pipe is commonly connected between the spray head 291 and the liquid storage tank 29.

[0055] By opening the spray head 291, the coolant in the liquid storage tank 29 can be sprayed on the surface of the milling cutter. On the one hand, it can cool the milling cutter, and on the other hand, it can also play a lubricating role in the cutting of the workpiece, avoiding the damage of the workpiece during cutting.

[0056] Both sides of the filter plate 10 are provided with grooves, and fixing rods 31 are detachably installed in the grooves. Rotatingly installed at the tops of the two fixing rods 31 are interlaced holding rings 32. Clasps are alternately arranged between the two holding rings 32. Fixedly installed in the middles of the two holding rings 32 are air cylinders 33, and fixedly installed at the telescopic ends of the air cylinders 33 are arc-shaped blocks 34.

[0057] When fixing a cylindrical workpiece before cutting, first install the fixing rods 31 in the grooves on the filter plate 10 respectively. Then rotate the holding rings 32 on the fixing rods 31. When the two holding rings 32 form a circular ring, lock the two holding rings 32 in sequence through the clasps. Then place the cylindrical workpiece to be cut in the middle of the circular ring. Then start the air cylinder 33 to push forward until the arc-shaped blocks 34 on both sides lock the cylindrical workpiece.

[0058] Installation openings are provided at the four corners of the upper end surface of the operation box 1. On both sides of the upper end surface of the filter plate 10 are provided side frames 41. Fixedly installed on both sides of each side frame 41 are electric push plates 42 arranged in an inverted L shape. The ends of the electric push plates 42 far from the side frames 41 are placed into the installation openings. Between the two side frames 41 are jointly installed two traction plates 43.

[0059] In the middle of the upper side of the side frame 41 is rotationally installed a threaded rod 44 through a motor. Below the threaded rod 44 is an L-shaped moving groove provided on the side frame 41. Threadedly rotatably installed on the threaded rod 44 is an adjusting frame 45. Fixedly installed at one end of the adjusting frame 45 is an upper frame 46, and the upper frame 46 is arranged at a right angle. The four upper frames 46 are arranged diagonally. On one side of the upper frame 46 is slidably installed a sliding rod 47. Fixedly installed at the bottom of the sliding rod 47 is a lower frame 48. A spring is sleeved outside the sliding rod 47 and the spring is located between the upper frame 46 and the lower frame 48.

[0060] When cutting a plate-shaped workpiece, first place the electric push plates 42 correspondingly in the installation openings at the upper end of the operation box 1. Start the electric push plates 42 to adjust the distance between the two side frames 41, so that the upper frames 46 and the lower frames 48 on both sides clamp the width of the plate-shaped workpiece. Then start the motor to drive the threaded rod 44 to rotate. When the threaded rod 44 rotates, the two upper frames 46 and the lower frames 48 on the side frame 41 clamp the length of the plate-shaped workpiece, finally meeting the four-corner clamping of the plate-shaped workpiece before cutting.

[0061] Since the milling cutter will move the filter plate 10 to the bottom end of the moving groove when cutting the workpiece, at this time the workpiece placed on the filter plate 10 will also move down with the filter plate 10. Through the settings of the sliding rod 47 and the lower frame 48, when the filter plate 10 drives the workpiece to move down, the lower frames 48 at the four corners can move down synchronously under the action of the sliding rod 47 and the spring, so that the multiple lower frames 48 always clamp the workpiece.

[0062] The three-edge spiral milling cutter can be detachably installed on the lower end surface of the replacement ring 260. The three-edge spiral milling cutter includes a cutting head, which has at least three cutting edges. A tool shank is provided at the upper part of the cutting head, and the cutting head and the tool shank are connected by bolts. The cutting head is positioned and connected to the tool shank by a cross-shaped concave-convex groove.

[0063] The tool adopts a replaceable cutter head design. The single weight of the cutter head is much lower than that of the overall tungsten carbide tool. Using 6-axis powder pressing, the blank has less allowance, short precision grinding processing cycle, and the comprehensive cost is much lower than that of the overall tungsten carbide tool of the same purpose.

[0064] Advantages in milling accuracy. This product adopts a five-axis precision grinding cutter head, and the tool shank connection uses a cross-shaped concave-convex groove for precise positioning. Its rotary tool jump accuracy and rotary diameter accuracy are much higher than those of the existing indexable tools on the market.

[0065] Advantages in processing efficiency. This product adopts precision grinding spiral cutting edges, and the processing resistance is less than that of the traditional small-diameter indexable inserts. The 8-mm diameter tool of this product adopts a 3-edge design, and the processing force is more balanced. Compared with the traditional indexable tool with a single edge for small diameter, this product can obtain a larger cutting depth and a higher feed F value.

[0066] When the present invention is in use, first, the fixing rod 31 or the electric push plate 42 is selectively installed and fixed according to the shape of the workpiece to be processed. When cutting the workpiece, the hydraulic rod 21 retracts, enabling the three-edge spiral milling cutter to press the filter plate 10 against the spring to the bottom of the moving groove. At this time, the filter plate 10 is located inside the working box 1, and the four walls of the working box prevent the metal chips generated during the cutting of the workpiece, effectively avoiding the situation of metal chips splashing during the cutting of the metal workpiece. By sliding the carriage 12 in the chute and simultaneously cooperating with the moving frame 24 sliding on the guide rod 23, the milling cutter can be quickly displaced. By rotating the center plate 25 left and right on the mounting frame 26, it can also meet the requirement of cutting the side wall of the cylindrical workpiece. By disassembling the replacement ring 260, the three-edge spiral milling cutter can be quickly replaced, solving the problem that the three-edge spiral milling cutter is damaged during operation and cannot be conveniently replaced due to its high temperature.

[0067] The motor starts to drive the mounting bracket 26 to rotate, causing the three-edge spiral milling cutter to rotate, thereby cutting the surface of the already fixed workpiece. The telescopic movement of the electric push rod 241 drives the rack to move. When the rack moves, it drives the steering wheel 242 to rotate, thereby causing the center plate 25 to rotate. By rotating the center plate 25, the angle of the three-edge spiral milling cutter fixed on the mounting bracket 26 can be adjusted, so as to meet the adjustment of different cutting angles during the cutting of the three-edge spiral milling cutter. Compared with the existing device, the present invention can cut different types of workpieces such as plate-shaped and columnar workpieces. At the same time, the angle of the three-edge spiral milling cutter can be adjusted to achieve cutting at different angles of the workpiece. And by rotating the center plate 25, the three-edge spiral milling cutter can also cut the side wall of the columnar workpiece, making the use range of the entire milling machine wider;

[0068] Since the temperature of the three-edge spiral milling cutter is relatively high during operation, when replacing the damaged milling cutter, directly contacting the milling cutter is likely to cause harm to the staff. Compared with the existing device, the present invention installs the milling cutter on the replacement ring 260. By disassembling the replacement ring 260, the milling cutter can be quickly replaced, and the staff does not need to contact the high-temperature milling cutter, avoiding scalding of the staff by the high-temperature milling cutter. When disassembling the replacement ring 260, push the pressing rod 264 to make the active wedge block 265 squeeze the driven wedge block 263. At this time, the driven wedge block 263 drives the conical frame 262 to move downward. When the conical frame 262 moves downward, the extrusion of the plurality of clamping plates 261 is cancelled. At this time, the clamping plates 261 move out of the card slots on the inner wall of the replacement ring 260 under the action of the spring, and then the replacement ring 260 can be taken out from the mounting bracket 26. When installing the replacement ring 260 on the mounting bracket 26, after aligning the replacement ring 260 and the mounting bracket 26 coaxially, move the replacement ring 260 upward. When the replacement ring 260 moves upward, it synchronously squeezes the conical frame 262 to move upward. After the conical frame 262 moves upward, it pushes the plurality of clamping plates 261 until the clamping plates 261 move into the card slots on the inner wall of the replacement ring 260, thereby achieving the quick installation of the replacement ring 260 and the milling cutter;

[0069] The electric slider starts to drive the rotating ring 27 to rotate. When the rotating ring 27 rotates, it synchronously drives multiple rotating plates 271 to rotate. When the rotating plates 271 rotate, they push the protective frames 272. At this time, the multiple protective frames 272 approach each other until they support and hold the installed replacement ring 260. Through the setting of the protective frames 272, the replacement ring 260 installed on the mounting frame 26 can be protected, preventing the replacement ring 260 from loosening when the milling cutter is working. When the motor starts to drive the milling cutter to work, it synchronously drives the central rod 28 to rotate. When the central rod 28 rotates, it drives the round rod 281 to rotate through bevel gears. When the round rod 281 rotates, it synchronously drives the cam 282 to rotate. When the cam 282 rotates, it drives the piston rod 284 to be compressed in the air cylinder 283 through the pressing frame 285. Finally, the compressed gas in the air cylinder 283 cools the surface of the milling cutter through the blowing pipe, thereby reducing the damage rate of the milling cutter. When the nozzle 291 is opened, the coolant in the liquid storage tank 29 can be sprayed on the surface of the milling cutter. On the one hand, it can cool the milling cutter, and on the other hand, it can also play a lubricating role during the cutting of the workpiece, preventing the workpiece from being damaged during cutting.

[0070] The above shows and describes 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 by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An automatic chip milling machine, comprising a working box (1), characterized in that: The operation box (1) is provided with movable grooves on both sides, and filter plates (10) are placed in the movable grooves on both sides. A spring is installed between the filter plates (10) and the movable grooves. A through groove is provided on both sides of the filter plates (10) and is provided on the operation box (1). A collection bin (11) detachably connected to the operation box (1) is provided on the outside of the through groove. A slide is provided on the top of the collection bin (11) and is provided on the outside of the operation box (1). A slide (12) is slidably installed in the slide via an electric slider. A hydraulic rod (21) is fixedly installed on the upper end surface of the slide (12). A connecting frame (22) is fixedly installed on the top of the hydraulic rod (21). Two guide rods (23) arranged front and back are installed between the connecting frames (22) on both sides. A movable frame (24) is slidably installed between the two guide rods (23) via an electric slider. A center plate (25) is rotatably installed in the middle of the movable frame (24). A mounting frame (26) is rotatably installed on the lower end surface of the center plate (25) via a motor. A replacement ring (260) is detachably installed on the outside of the mounting frame (26). A center rod (28) passing through the center plate (25) is fixedly mounted on the middle of the upper end surface of the mounting frame (26), a rectangular plate is fixedly mounted on one side of the upper end surface of the center plate (25), a round rod (281) is rotatably mounted on the middle of the rectangular plate, one end of the round rod (281) and the top of the center rod (28) are fixedly mounted with mutually meshing bevel gears, a cam (282) is fixedly mounted on the other end of the round rod (281), an air cylinder (283) is fixedly mounted on one end of the center plate (25), a piston rod (284) is slidably mounted on the middle of the air cylinder (283), a blowpipe is provided at the bottom of the air cylinder (283), a pressing frame (285) is rotatably mounted on one side of the cam (282), and a cylinder on one side of the pressing frame (285) slides inside the piston rod (284); The filter plate (10) has grooves on both sides, and fixed rods (31) are detachably installed in the grooves. Interlaced holding rings (32) are rotatably installed on the tops of the two fixed rods (31). Buckles are alternately provided between the two holding rings (32). Cylinders (33) are fixedly installed in the middle of the two holding rings (32), and arc blocks (34) are fixedly installed at the telescopic ends of the cylinders (33). A steering wheel (242) rotatably connected to the moving frame (24) is provided on one side of the center plate (25); a circular shaft at the center of the steering wheel (242) passes through the moving frame (24) and is fixedly connected to the center plate (25); an electric push rod (241) fixedly connected to the moving frame (24) is provided below the steering wheel (242); a rack engaged with the steering wheel (242) is fixedly mounted on the telescopic end of the electric push rod (241); A card plate (261) penetrating the mounting frame (26) is slidably mounted in the middle of the mounting frame (26), and a plurality of card plates (261) are close to each other and are inclined on one side, and a spring is commonly connected between the card plates (261) and the mounting frame (26). A conical frame (262) penetrating and sliding on the mounting frame (26) is provided between the plurality of card plates (261). The upper part of the conical frame (262) is always in contact with the card plate (261), and a driven wedge block (263) is fixedly mounted on the top of the conical frame (262). A pressing rod (264) is slidably mounted on one side of the mounting frame (26), and a spring is provided on the outer sleeve of the pressing rod (264). An active wedge block (265) is fixedly mounted on one end of the pressing rod (264) penetrating the mounting frame (26).

2. The automatic chip milling machine according to claim 1, characterized in that: A rotating ring (27) is rotatably mounted on the lower end surface of the center plate (25) via an electric slider, a rotating plate (271) is rotatably mounted on the inner side of the rotating ring (27), and a protective frame (272) is rotated at one end of the rotating plate (271) away from the rotating ring (27). The protective frame (272) is L-shaped and is slidably connected to the center plate (25).

3. The automatic chip milling machine according to claim 1, characterized in that: A liquid storage tank (29) is fixedly mounted on one side of the upper end surface of the center plate (25). The liquid storage tank (29) is used to store coolant. A nozzle (291) rotatably connected to the center plate (25) is provided on one side of the liquid storage tank (29). A connecting pipe is commonly connected between the nozzle (291) and the liquid storage tank (29).

4. The automatic chip milling machine according to claim 1, characterized in that: The operation box (1) is provided with mounting openings at the four corners of the upper end surface, and side frames (41) are provided on both sides of the upper end surface of the filter plate (10). Electric push plates (42) arranged in an inverted L shape are fixedly installed on both sides of the side frames (41), and one end of the electric push plate (42) away from the side frame (41) is placed in the mounting opening. Two traction plates (43) are installed between the two side frames (41).

5. The automatic chip milling machine according to claim 4, characterized in that: The middle part of the upper side of the side frame (41) is installed with a threaded rod (44) through the rotation of a motor, and an L-shaped movable groove is provided below the threaded rod (44) and is provided with an adjustment frame (45) on the threaded rod (44). An upper frame (46) is fixedly installed at one end of the adjustment frame (45). The upper frame (46) is arranged at a right angle, and the four upper frames (46) are all arranged diagonally. A slide rod (47) is slidably installed on one side of the upper frame (46), and a lower frame (48) is fixedly installed at the bottom of the slide rod (47). A spring is provided on the outer sleeve of the slide rod (47) and the spring is located between the upper frame (46) and the lower frame (48).

6. The three-edge spiral milling cutter of the automatic milling machine according to claim 5, characterized in that: The three-blade spiral milling cutter can be detachably mounted on the lower end surface of the replacement ring (260), and the three-blade spiral milling cutter comprises a blade head, the blade head has at least three blades, a tool rod is provided on the upper portion of the blade head, the blade head and the tool rod are connected by bolts, and the blade head is positioned and connected to the tool rod using a cross-shaped concave-convex groove.

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