A whirling tool fixture for reducing tool wear

Abstract

A whirl milling cutter fixing device, belonging to the technical field of whirl milling equipment, is disclosed to reduce tool wear. The technical solution is as follows: the tool holder is a cuboid block with a protrusion at the rear center that matches the tool mounting groove of the rotating cutter head. The protrusion is embedded in the groove, and the tool holder is connected to the groove via bolts. A tool fixing groove, running along the length of the tool holder, is located at the front center. The width and depth of the groove match the width and thickness of the tool. The tool shank is placed in the groove and fixed therewith by bolts. This invention features a simple structure and ease of use, reducing the tool replacement interval from approximately 5 passes to approximately 300 passes, significantly improving processing efficiency and reducing the number and cost of spare tools.

Description

Technical Field

[0001] This utility model relates to a cyclone milling cutter fixing device, belonging to the technical field of cyclone milling equipment. Background Technology

[0002] With the accelerating pace of blast furnace production, the demand for drill rods for furnace opening machines is increasing daily. The threads on the drill rods used to mount drill bits are special wave-shaped threads with a special pitch of 12.7mm. Ordinary lathes produce triangular threads, which cannot meet the requirements for drill bit mounting. To reduce costs and increase efficiency, the current measure is to add a cyclone milling machine to the existing ordinary lathe. When machining the wave-shaped threads on the drill rods, the drill rod is inserted into a round hole at one end of the lathe chuck. After adjusting the length, the drill rod is fixed in place using the lathe chuck. The lathe and cyclone milling machine are then started. The cyclone milling machine's rotating cutter head contacts the rotating drill rod at high speed, thus machining the required wave-shaped thread. However, the currently used cyclone milling machine is a modified version of an existing ordinary lathe. When machining wave-shaped threads, the vibration exceeds the limit, and the cutting tool cannot meet the requirements for long-term, high-volume machining. The tool breaks after machining about five rods, requiring replacement before re-machining. Therefore, tool consumption is high, resulting in low efficiency and frequent tool replacements, increasing costs. Currently, there are a large number of ordinary cutting tools that can meet the processing requirements, but their shape and size cannot be directly fixed on the rotary cutter head. Therefore, it is necessary to design a device that can fix ordinary cutting tools on the rotary cutter head of the cyclone milling machine. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cyclone milling cutter fixing device that can reduce tool wear. This tool fixing device can fix a tool with a normal external size that meets the processing conditions on the cyclone milling cutter head for drilling rod wave thread processing, which greatly improves processing efficiency and reduces spare parts costs.

[0004] The technical solution to the above technical problem is:

[0005] A cyclone milling cutter fixing device that reduces tool wear includes a tool clamping block, which is a cuboid block placed vertically. The length of the tool clamping block matches the length of the tool mounting groove of the cyclone milling machine's rotary cutter head. A clamping block protrusion along the length of the tool clamping block is located at the rear center of the tool clamping block, and this protrusion matches the tool mounting groove of the rotary cutter head, fitting into the groove. The bottom surface of the tool mounting groove of the rotary cutter head has mounting screw holes, and the tool clamping block is fixedly connected to these holes by bolts. A tool fixing groove along the length of the tool clamping block is located at the front center of the tool clamping block, and the depth of this groove matches the thickness of the tool shank. The tool shank is placed in the tool fixing groove and fixed therein by bolts.

[0006] The aforementioned cyclone milling cutter fixing device, which reduces tool wear, has a rear end of the clamping block protrusion behind the tool clamping block opposite to the bottom surface of the tool fixing groove in front of the tool clamping block. The bottom surface of the tool fixing groove has clamping block fixing holes arranged in parallel, which pass through the bottom surface of the tool fixing groove and connect to the front of the clamping block protrusion. The clamping block fixing bolt connects to the mounting screw hole of the tool mounting groove of the rotating cutter head through the clamping block fixing hole. The top surface of the tool clamping block has a vertically downward tool fixing screw hole, the lower end of which connects to the upper surface of the tool fixing groove. The tool fixing bolt is tightened against the upper top surface of the tool shank through the tool fixing screw hole.

[0007] The aforementioned cyclone milling cutter fixing device, which reduces tool wear, also includes a counterweight. The counterweight is a cuboid block, placed vertically, and its length matches the length of the tool mounting groove on the rotary cutter head. At the rear center of the counterweight is a counterweight protrusion along its length, which also matches the tool mounting groove on the rotary cutter head. The counterweight protrusion is embedded in the tool mounting groove on the opposite side of the tool holder. Parallel counterweight fixing holes are arranged at the front of the counterweight protrusion, passing through the protrusion and connecting to the front of the counterweight. Counterweight fixing bolts connect to the mounting screw holes in the tool mounting groove of the rotary cutter head through these fixing holes.

[0008] The aforementioned cyclone milling cutter fixing device, which can reduce tool wear, has two clamping block fixing holes, two tool fixing screw holes, and two counterweight fixing holes. The two clamping block fixing holes, the tool fixing screw holes, and the counterweight fixing holes are arranged sequentially along the length direction of the tool clamping block and the counterweight block, respectively. The clamping block fixing holes and the counterweight fixing holes are countersunk holes, and the clamping block fixing bolts and the counterweight fixing bolts are countersunk bolts.

[0009] The aforementioned cyclone milling cutter fixing device, which can reduce tool wear, has a sum of weights of the tool clamping block, clamping block fixing bolt, tool fixing bolt, and tool equal to the sum of weights of the counterweight block and counterweight fixing bolt.

[0010] The beneficial effects of this utility model are:

[0011] The tool holder protrusion of this invention is embedded in the tool mounting groove of the rotary cutter head of the cyclone milling machine and is fixed by the tool holder fixing bolt. The tool shank is placed in the tool fixing groove in front of the tool holder, and the tool fixing bolt fixes the tool shank to the tool fixing groove, so that the tool is fixedly connected to the rotary cutter head through the tool holder. The counterweight protrusion behind the counterweight is embedded in the tool mounting groove of the rotary cutter head on the opposite side of the tool holder and is fixed by the counterweight fixing bolt. The counterweight and the tool holder form a balance on both sides of the rotary cutter head, so that the rotary cutter head can rotate smoothly and ensure that the vibration value is within the allowable range when the rotary cutter head is machining drill rod threads at high speed.

[0012] This utility model has a simple structure and is easy to use. It can fix a tool with a normal external shape and size that meets the processing conditions on the rotating cutter head of a whirl milling machine to process the waveform thread of the drill rod. It reduces the tool replacement time from about 5 rods to about 300 rods, greatly improving the processing efficiency and reducing the number and cost of spare parts. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention.

[0014] Figure 2 This is the front view of the tool holder;

[0015] Figure 3 yes Figure 2 Side view

[0016] Figure 4 This is the front view of the counterweight;

[0017] Figure 5 yes Figure 4 Side view;

[0018] Figure 6 This is a schematic diagram of a cyclone milling machine machining a drill rod with a wave-shaped thread.

[0019] The markings in the diagram are as follows: 1. Rotary cutter head; 2. Tool mounting groove; 3. Mounting screw hole; 4. Tool clamping block; 5. Clamping block protrusion; 6. Clamping block fixing hole; 7. Tool fixing groove; 8. Tool fixing screw hole; 9. Tool fixing bolt; 10. Counterweight block; 11. Counterweight protrusion; 12. Counterweight block fixing hole; 13. Counterweight fixing bolt; 14. Lathe; 15. Chuck; 16. Drill rod; 17. Cyclone milling machine; 18. Detailed Implementation

[0020] This utility model consists of a tool clamping block 5, a clamping block countersunk bolt, a tool fixing bolt 10, a counterweight block 11, and a counterweight countersunk bolt 14.

[0021] Figure 1 As shown, the rotary cutter head 1 of the cyclone milling machine 18 is a disc. There are four tool mounting grooves 2 evenly distributed on the front of the rotary cutter head 1. The four tool mounting grooves 2 are respectively along the circumference of the rotary cutter head 1. Multiple mounting screw holes 3 are arranged sequentially along the length direction of the tool mounting grooves 2. The tool 4 is fixed in the tool mounting groove 2 of the rotary cutter head 1 through the mounting screw holes 3. The front end of the tool 4 extends out of the circumference edge of the rotary cutter head 1 to perform wave thread processing on the drill rod.

[0022] Figure 1 As shown, tool clamping blocks 5 and counterweight blocks 11 are fixedly connected in the two opposite tool mounting grooves 2 of the rotary cutter head 1 of the cyclone milling machine 18. The tool 4 is fixed in the tool clamping block 5. The counterweight block 11 plays a counterweight role with the tool clamping block 5 and the tool 4, so that the rotary cutter head 1 rotates smoothly and ensures the stability of the machining.

[0023] Figure 1 , 2 As shown in Figure 3, the tool holder 5 is a cuboid block, placed vertically, and its length matches the length of the tool mounting groove 2 of the rotating tool disc 1. At the rear center of the tool holder 5, there is a clamping protrusion 6 along its length, which also matches the tool mounting groove 2 of the rotating tool disc 1, and is embedded within it. The clamping protrusion 6 has two parallel clamping fixing holes 7, which are perpendicular to the cuboid shape of the tool holder 5. Two clamping fixing bolts connect to the mounting screw holes 3 of the tool mounting groove 2 of the rotating tool disc 1 through the clamping fixing holes 7, thus securing the tool holder 5 to the rotating tool disc 1.

[0024] Figure 1 , 2 As shown in Figure 3, the tool holder 5 has a tool fixing groove 8 along its length at the center of its front. The bottom surface of the tool fixing groove 8 is opposite to the rear end of the tool holder protrusion 6 behind the tool holder 5. The tool fixing hole 7 passes through the tool holder protrusion 6 and connects with the bottom surface of the tool fixing groove 8. When the tool holder 5 is fixedly connected to the tool mounting groove 2 of the rotating tool disc 1, the tool fixing bolt passes through the bottom surface of the tool fixing groove 8 towards the tool holder protrusion 6 and connects with the mounting screw hole 3 in the tool mounting groove 2. The tool fixing hole 7 has a countersunk hole on the bottom surface of the tool fixing groove 8. The tool fixing bolt is a countersunk bolt, and the nut of the tool fixing bolt is embedded in the countersunk hole, which has no effect on the tool fixing groove 8.

[0025] Figure 1 , 2As shown in Figure 3, the width and depth of the tool fixing groove 8 on the front of the tool holder 5 match the width and thickness of the tool 4. The height of the tool fixing groove 8 is 10mm greater than the height of the tool 4, and the depth is consistent with the width of the tool 4. The tool shank of the tool 4 is placed in the tool fixing groove 8. The top surface of the tool holder 5 has a vertically downward tool fixing screw hole 9. The lower end of the tool fixing screw hole 9 is connected to the upper part of the tool fixing groove 8, and the tool fixing bolt 10 is tightened to the upper top surface of the tool shank through the tool fixing screw hole 9.

[0026] Figure 1 , 4 As shown in Figure 5, the counterweight 11 is a cuboid block, placed vertically, and its length matches the length of the tool mounting groove 2 of the rotating cutter head 1. At the rear center of the counterweight 11, there is a counterweight protrusion 12 along its length, which matches the tool mounting groove 2 of the rotating cutter head 1. The counterweight protrusion 12 is embedded in the tool mounting groove 2 of the rotating cutter head 1 on the opposite side of the tool clamping block 5. Counterweight fixing holes 13 are arranged parallel to each other on the front of the counterweight protrusion 12, passing through the counterweight protrusion 12 and communicating with the front of the counterweight 11. The counterweight fixing bolt 14 connects to the mounting screw hole 3 of the tool mounting groove 2 of the rotating cutter head 1 through the counterweight fixing hole 13.

[0027] Figure 1 The display shows that the sum of the weights of the tool clamping block 5, the clamping block fixing bolt, the tool fixing bolt 10, and the tool 4 is equal to the sum of the weights of the counterweight block 11 and the counterweight fixing bolt 14. This makes the counterweight block 11 and the tool clamping block 5 balanced on both sides of the rotating cutter head 1, allowing the rotating cutter head 1 to rotate smoothly. This ensures that the vibration value of the rotating cutter head 1 is within the allowable range when it is machining drill rod threads at high speed.

[0028] Figure 6 The usage process of this utility model is shown as follows:

[0029] Step 1: Place the clamping protrusion 6 of the tool clamping block 5 into the tool mounting slot 2 of the rotating tool disc 1, and use the clamping block fixing bolt to connect the tool clamping block 5 to the rotating tool disc 1 through the clamping block fixing hole 7 of the tool clamping block 5 and the mounting screw hole 3 of the tool mounting slot 2 of the rotating tool disc.

[0030] Step 2: Place the tool 4 in the tool fixing groove 8 of the tool holder 5, adjust the length of the tool 4 extending out of the circumference of the rotating tool disc 1, and use the tool fixing bolt 10 to tighten the connection between the tool holder 4 and the top surface of the tool shank through the tool fixing screw hole 9 from the top surface of the tool holder 5.

[0031] Step 3: Install the counterweight 11 into the tool mounting slot 2 of the rotating tool disc 1 opposite the tool holder 5, and fix the counterweight firmly with the counterweight fixing bolt 14.

[0032] Step 4: Insert the drill rod 17 into the round hole behind the lathe 15 and fix the workpiece firmly with the lathe chuck 16. Start the cyclone milling machine 18 and start the lathe 15 at the same time. The drill rod 17 rotates under the action of the lathe chuck 16. The cyclone milling machine 18 completes the machining of the wave-shaped thread on the workpiece by moving on the slide.

[0033] An embodiment of this utility model is as follows:

[0034] The tool clamping block 5 is made of ordinary carbon steel, with a length of 60mm, a width of 60mm, and a height of 45mm. The clamping block protrusion 6 has a length of 60mm, a width of 20mm, and a height of 15mm. The tool fixing groove 8 has a length of 60mm, a width of 22mm, and a height of 20mm. The clamping block fixing hole 7 is a countersunk hole with a diameter of 8mm.

[0035] The counterweight 11 is made of ordinary carbon steel, with a length of 60mm, a width of 60mm, and a height of 45mm. The counterweight protrusion 12 has a length of 60mm, a width of 20mm, and a height of 15mm. The counterweight fixing hole 13 is a countersunk hole 2 with a diameter of 8mm.

Claims

1. A whirlwind milling cutter fixing device that can reduce tool wear, characterized in that: It includes a tool holder (5), which is a cuboid block. The tool holder (5) is placed vertically, and its length matches the length of the tool mounting groove (2) of the rotating cutter head (1) of the cyclone milling machine (18). At the rear center of the tool holder (5) is a tool protrusion (6) along the length of the tool holder (1). The tool protrusion (6) matches the tool mounting groove (2) of the rotating cutter head (1), and the tool protrusion (6) is embedded in the tool mounting groove (2) of the rotating cutter head (1). The bottom surface of the tool mounting groove (2) has mounting screw holes (3). The tool clamping block (5) is fixedly connected to the mounting screw holes (3) on the bottom surface of the tool mounting groove (2) of the rotating tool disc (1) by bolts. The front middle part of the tool clamping block (5) has a tool fixing groove (8) along the length direction of the tool clamping block (5). The width and depth of the tool fixing groove (8) match the width and thickness of the tool (44). The tool shank of the tool (4) is placed in the tool fixing groove (8). The tool shank is fixed in the tool fixing groove (8) by bolts.

2. The cyclone cutter tool fixture for reducing tool wear according to claim 1, wherein: The rear end of the clamping block protrusion (6) behind the tool clamping block (5) is opposite to the bottom surface of the tool fixing groove (8) in front of the tool clamping block (5). The bottom surface of the tool fixing groove (8) has clamping block fixing holes (7) arranged in parallel. The clamping block fixing holes (7) pass through the bottom surface of the tool fixing groove (8) and are connected to the front of the clamping block protrusion (6). The clamping block fixing bolt is connected to the mounting screw hole (3) of the tool mounting groove (2) of the rotating tool disc (1) through the clamping block fixing hole (7). The top surface of the tool clamping block (5) has a vertically downward tool fixing screw hole (9). The lower end of the tool fixing screw hole (9) is connected to the upper surface of the tool fixing groove (8). The tool fixing bolt (10) is pressed against the upper top surface of the tool rod through the tool fixing screw hole (9).

3. The cyclone cutter tool fixture of claim 1, wherein: It also has a counterweight (11), which is a cuboid block. The counterweight (11) is placed vertically and its length matches the length of the tool mounting groove (2) of the rotating cutter head (1). There is a counterweight protrusion (12) in the middle of the back of the counterweight (11) along the length of the counterweight (11). The counterweight protrusion (12) matches the tool mounting groove (2) of the rotating cutter head (1). The counterweight protrusion (12) is embedded in the tool mounting groove (2) of the rotating cutter head (1) on the opposite side of the tool clamping block (5). There are counterweight fixing holes (13) arranged in parallel in front of the counterweight protrusion (12). The counterweight fixing holes (13) pass through the counterweight protrusion (12) and are connected to the front of the counterweight (11). The counterweight fixing bolt (14) is connected to the mounting screw hole (3) of the tool mounting groove (2) of the rotating cutter head (1) through the counterweight fixing hole (13).

4. The cyclone cutter tool fixture of claim 3, wherein: The clamping block fixing hole (7), the tool fixing screw hole (9), and the counterweight fixing hole (13) are two in total. The two clamping block fixing holes (7), the tool fixing screw hole (9), and the counterweight fixing hole (13) are arranged sequentially along the length direction of the tool clamping block (5) and the counterweight block (11). The clamping block fixing hole (7) and the counterweight fixing hole (13) are countersunk holes, and the clamping block fixing bolt and the counterweight fixing bolt (14) are countersunk bolts.

5. The cyclone cutter tool fixture of claim 4, wherein: The sum of the weights of the tool clamp (5), clamp fixing bolt, tool fixing bolt (10), and tool (4) is equal to the sum of the weights of the counterweight (11) and counterweight fixing bolt (14).

Images