A tap head structure for pipe thread machining

Abstract

The utility model discloses a pipe thread processing is with the structure of threading machine tool bit, include: worm gear elevator, speed reducer, the speed reducer fixed mounting is in the right -hand end of worm gear elevator, hollow main shaft, hollow main shaft fixed mounting is in the output of speed reducer, and with the casing of speed reducer passes through bearing and connects, tool bit mechanism, tool bit mechanism includes die holder, push -pull subassembly, lever, sliding block and die. Because pipe and hollow main shaft concentric, make according to the diameter of pipe of need processing, adjust four dies to to appropriate distance, push into the pipe four die center again, the cutting edge of die is in the surface of pipe end portion in turn and cuts down the redundant material (similar to the tapping on the hole), forms the thread, when cutting to appropriate length, elevator takes the die of hole board and opens, and the thread is processed well, to this to utilize four dies to the work of pipe thread processing, like this can process the pipe thread of different outer diameter pipe, improved practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of threading machine accessories, specifically to a threading machine cutter head structure for pipe threading. Background Technology

[0002] An electric threading machine is an electric tool equipped with forward and reverse rotation devices for processing external threads on pipes. It is also known as an electric pipe cutting and threading machine, thread twisting machine, or pipe threading machine. It makes pipe thread processing during pipeline installation easier and faster, reducing the labor intensity of pipeline installation workers.

[0003] The current threading machine cutter head structure has poor adaptability to pipe diameter in actual use. When processing pipe fittings of different specifications, it is necessary to disassemble and replace the entire die assembly. This makes the entire pipe threading process quite troublesome when processing pipe threads of different outer diameters. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a threading machine cutter head structure for pipe threading, so as to solve the problems mentioned in the background art.

[0005] A threading cutter head structure for pipe threading includes:

[0006] Worm gear jack;

[0007] The speed reducer is fixedly installed at the right end of the worm gear jack;

[0008] A hollow spindle is fixedly installed at the output end of the reducer and connected to the housing of the reducer via bearings.

[0009] The cutter head mechanism includes a die holder, a push-pull assembly, a lever, a slider, and dies. The right side of the hollow main shaft is fixedly connected to the left side of the die holder. The push-pull assembly movably passes through the left side of the die holder. The left side of the push-pull assembly extends through the interior of the hollow main shaft and is connected to the lead screw of the worm gear jack via a bearing. There are four sliders, which are slidably connected to the right side of the die holder. There are four dies, which are fixed to the sliders one by one with corresponding screws. An L-shaped lever is movably connected between the slider and the push-pull assembly. The center of the lever is rotatably connected to the interior of the die holder.

[0010] Preferably, the die holder includes a clamp seat and a slider seat, the left part of the clamp seat is fixed to the right part of the hollow spindle, and the slider seat is fixed to the right end of the clamp seat.

[0011] Preferably, the right end of the slider seat has a groove around its perimeter, and the sliders are slidably connected to the grooves one by one.

[0012] Preferably, the push-pull assembly includes a push-pull rod and a push-pull ring. The push-pull ring is located inside the clamp seat, the push-pull rod is fixed to the left end of the push-pull ring, the left part of the push-pull rod moves through the clamp seat and extends through the hollow main shaft, and the left part of the push-pull rod is connected to the lead screw of the worm gear jack through a bearing.

[0013] Preferably, both ends of the outer ring groove of the push-pull ring have inner ring grooves, the first end of the lever is movably embedded in the inner ring groove, and the center of the lever is rotatably connected to the clamp seat.

[0014] Preferably, the slider has a movable groove at its left end, and the end of the lever is movably embedded in the movable groove.

[0015] The beneficial effects of this utility model are as follows: Since the tube and the hollow spindle are concentric, the four dies can be adjusted to a suitable distance according to the diameter of the tube to be processed, and then the tube is pushed into the center of the four dies. The cutting edges of the dies cut off the excess material on the surface of the tube end in sequence (similar to tapping a hole with a tap) to form a thread. When the appropriate length is cut, the dies with holes on the lifting mechanism open, and the thread is processed. This method of using four dies to process tube threads can process tube threads of different outer diameters, thus improving practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0017] Figure 2 This is a partial cross-sectional view of the present invention.

[0018] Figure 3 This utility model Figure 1 A schematic diagram of removing the clamp seat and slider seat.

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the rear of the push-pull ring.

[0020] In the diagram: 1. Worm gear jack; 2. Reducer; 3. Cutter head mechanism; 31. Fixture seat; 32. Slider seat; 33. Push-pull rod; 34. Push-pull ring; 35. Lever; 36. Slider; 37. Movable groove; 38. Inner ring groove; 39. Die; 4. Hollow spindle. Detailed Implementation

[0021] like Figures 1-4 As shown, a threading cutter head structure for pipe threading includes:

[0022] Worm Gear Jack 1;

[0023] Reducer 2, which is fixedly installed at the right end of worm gear jack 1;

[0024] Hollow spindle 4 is fixedly installed at the output end of reducer 2 and connected to the housing of reducer 2 through bearings. Reducer 2 can drive hollow spindle 4 to rotate.

[0025] The cutter head mechanism 3 includes a die holder, a push-pull assembly, a lever 35, a slider 36, and dies 39. The right side of the hollow main shaft 4 is fixedly connected to the left side of the die holder. The push-pull assembly movably passes through the left side of the die holder, extending through the interior of the hollow main shaft 4 and connected to the lead screw of the worm gear jack 1 via a bearing. There are four sliders 36, each slidably connected around the right end of the die holder. There are four dies 39, each fixed to the sliders 36 with corresponding screws. An L-shaped lever 35 is movably connected between the sliders 36 and the push-pull assembly. The center of the lever 35 is rotatably connected to the interior of the die holder. When the hollow main shaft 4 rotates, it drives the die holder to rotate, causing the slider 36 to move in a circular motion, which in turn drives the lever 35 to move in a circular motion. The push-pull assembly rotates, and it rotates inside the hollow main shaft 4. Since the push-pull assembly is connected to the lead screw bearing of the worm gear jack 1, it does not drive the lead screw of the worm gear jack 1 to rotate. When the lead screw of the worm gear jack 1 pushes and pulls the push-pull assembly, it can push and pull the lever 35. Due to the lever effect, the lever 35 causes the slider 36 to move closer or further apart, thereby causing the dies 39 to move closer or further apart. When a tube is inserted between the four dies 39, the worm gear jack 1 drives the dies 39 to move closer and fit tightly against the tube. Then, the reducer 2 drives the hollow main shaft 4 to rotate. The hollow main shaft 4 drives the clamp seat and the dies 39 to move together, thus using the four dies 39 to process the pipe thread. This allows for the processing of pipe threads on tubes of different outer diameters, improving practicality.

[0026] The die holder includes a clamp seat 31 and a slider seat 32. The left part of the clamp seat 31 is fixed to the right part of the hollow main shaft 4. The slider seat 32 is fixed to the right end of the clamp seat 31. The right end of the slider seat 32 has grooves around its perimeter. The sliders 36 are slidably connected to the inside of the grooves one by one. The sliders 36 can slide along the grooves. When the hollow main shaft 4 rotates, it can drive the clamp seat 31 to rotate. The clamp seat 31 drives the slider seat 32 to rotate, and the slider seat 32 drives the sliders 36 to move in a circular motion.

[0027] The push-pull assembly includes a push-pull rod 33 and a push-pull ring 34. The push-pull ring 34 is located inside the clamp seat 31. The push-pull rod 33 is fixed to the left end of the push-pull ring 34. The left part of the push-pull rod 33 moves through the clamp seat 31 and extends through the hollow main shaft 4. The left part of the push-pull rod 33 is connected to the lead screw of the worm gear jack 1 through a bearing. When the lead screw of the worm gear jack 1 pushes or pulls, it can drive the push-pull rod 33 to move synchronously. When the push-pull rod 33 rotates, it can rotate with the lead screw through the bearing. Then, the movement of the push-pull rod 33 can drive the push-pull ring 34 to move synchronously.

[0028] Both ends of the outer annular groove of the push-pull ring 34 have inner annular grooves 38. The first end of the lever 35 is movably embedded in the inner annular groove 38. The center of the lever 35 is rotatably connected to the clamp seat 31. The left end of the slider 36 has a movable groove 37. The end of the lever 35 is movably embedded in the movable groove 37. When the push-pull ring 34 moves to the right, it pushes the first end of the lever 35. As the lever 35 rotates, its end drives the slider 36 to open the gap. When the push-pull ring 34 moves to the left, it pulls the first end of the lever 35. As the lever 35 rotates, its end drives the slider 36 to close the gap.

[0029] Working principle: The worm gear jack 1 pulls the push-pull rod 33, which in turn pulls the push-pull ring 34 to the left. This causes the push-pull ring 34 to pull the heads of the four levers 35. The ends of the four levers 35 then drive the four sliders 36 to move inward, allowing the tube to be inserted between the four dies 39. The reducer 2 then drives the hollow spindle 4 to rotate, which in turn drives the clamp seat and the dies 39 to move together. This allows the four dies 39 to process the pipe thread, enabling the processing of pipe threads for tubes of different outer diameters, thus improving practicality. After processing, the worm gear jack 1 pushes the push-pull rod 33, and when the push-pull ring 34 moves to the right, it pushes the head of the lever 35. As the lever 35 rotates, its end drives the sliders 36 to open the gap, thus causing the dies 39 to open.

Claims

1. A threading cutter head structure for pipe threading, characterized in that, include: Worm gear jack (1); The speed reducer (2) is fixedly installed at the right end of the worm gear jack (1); Hollow main shaft (4), the hollow main shaft (4) is fixedly installed at the output end of the reducer (2) and connected to the housing of the reducer (2) through bearings; The cutter head mechanism (3) includes a die holder, a push-pull assembly, a lever (35), a slider (36), and a die (39). The right side of the hollow main shaft (4) is fixedly connected to the left side of the die holder. The push-pull assembly is movably connected through the left side of the die holder. The left side of the push-pull assembly extends through the interior of the hollow main shaft (4) and is connected to the lead screw of the worm gear jack (1) through a bearing. There are four sliders (36) which are slidably connected around the right end of the die holder. There are four dies (39) which are fixed to the sliders (36) with corresponding screws. The sliders (36) and the push-pull assembly are movably connected by L-shaped levers (35). The center of the levers (35) is rotatably connected to the interior of the die holder.

2. The threading cutter head structure for pipe threading according to claim 1, characterized in that: The die holder includes a clamp seat (31) and a slider seat (32). The left side of the clamp seat (31) is fixed to the right side of the hollow spindle (4), and the slider seat (32) is fixed to the right end of the clamp seat (31).

3. The threading cutter head structure for pipe threading according to claim 2, characterized in that: The slider seat (32) has a groove around its right end, and the sliders (36) are slidably connected to the grooves one by one.

4. The threading cutter head structure for pipe threading according to claim 2, characterized in that: The push-pull assembly includes a push-pull rod (33) and a push-pull ring (34). The push-pull ring (34) is located inside the clamp seat (31). The push-pull rod (33) is fixed to the left end of the push-pull ring (34). The left part of the push-pull rod (33) moves through the clamp seat (31) and extends through the hollow main shaft (4). The left part of the push-pull rod (33) is connected to the lead screw of the worm gear jack (1) through a bearing.

5. The threading cutter head structure for pipe threading according to claim 4, characterized in that: The outer ring groove of the push-pull ring (34) has inner ring grooves (38) at both ends. The first end of the lever (35) is movably embedded in the inner ring groove (38). The center of the lever (35) is rotatably connected to the clamp seat (31).

6. The threading cutter head structure for pipe threading according to claim 5, characterized in that: The slider (36) has a movable groove (37) at its left end, and the end of the lever (35) is movably embedded into the movable groove (37).

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