Threading machine with threaded steel bar end cutting and polishing functions

Abstract

The utility model relates to a threading machine with twisted steel end cutting and polishing functions. The threading machine with the threaded steel bar end cutting and polishing functions comprises a base, a clamping and cutting device and a threading mechanism. The threading mechanism is arranged on the base, and a driving device connected with the threading mechanism is installed in the base. The threading mechanism comprises a threading machine main body and a rotating machine head; the rotating machine head is connected to the front end of the threading machine; the clamping and cutting device is arranged at the front end of the rotating machine head, and the bottom of the clamping and cutting device is connected with the base. According to the threading machine with the threaded steel bar end cutting and polishing functions, the end face of a steel bar can be leveled through the cutting saw blade before threading is conducted on the steel bar, burrs on the end face of the steel bar can be polished through the polishing piece on the cutting saw blade after threading is completed, the end face of the steel bar recovers to be flat, and the threading efficiency is improved. When two steel bars are connected, the end faces can be tightly attached, manpower consumption is reduced, and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building material processing, in particular to a threading machine with the functions of cutting and grinding the end heads of ribbed steel bars. Background Art

[0002] During the building construction process, it is often necessary to connect ribbed steel bars of different lengths or specifications together according to actual requirements. Through the butt joint technology, multiple sections of ribbed steel bars can be effectively connected together to meet the construction needs and ensure the construction progress and quality.

[0003] Currently, mainly a steel bar threading machine is used to process threads at the end heads of steel bars, and then two steel bars are thread-connected into one body through a threaded sleeve to achieve butt joint.

[0004] However, the end faces of ribbed steel bars are generally not flat in the factory state. After two ribbed steel bars are connected through a threaded sleeve, there will be a gap between the end faces of the two ribbed steel bars, which greatly reduces the overall strength and shear resistance after connection. In addition, after the steel bar threading machine finishes processing the steel bars, burrs will appear at the edge of the end face of the steel bars. The burrs clamped between the end faces of the steel bars will also affect the connection strength. Currently, generally the manual grinding method is adopted, using a angle grinder or other tools to remove the burrs, which undoubtedly adds a process to the processing of steel bars, consuming manpower and lengthening the processing cycle of steel bars. Therefore, a threading machine that can cut the end face flat and can grind the burrs on the end face is needed. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above problems and provide a threading machine with the functions of cutting and grinding the end heads of ribbed steel bars.

[0006] The technical solution of the utility model is: a threading machine with the functions of cutting and grinding the end heads of ribbed steel bars, including a base, a clamping and cutting device, and a threading mechanism; the threading mechanism is arranged on the base, and a driving device connected to the threading mechanism is installed inside the base; the threading mechanism includes a threading machine main body and a rotating head; the rotating head is connected to the front end of the threading machine;

[0007] The described clamping and cutting device is arranged at the front end of the rotating head, the bottom of the clamping and cutting device is connected to the base, and the clamping and cutting device includes a pedestal, a bench vice, and a cutting and grinding mechanism; the cutting and grinding mechanism is hinged to the end of the pedestal; the bench vice is fixed to the pedestal.

[0008] Preferably, a through hole is provided in the middle of the end face of the rotating headstock, and a chuck is also provided on the end face; a threading hole is concentrically provided on the end face of the threading machine main body, and a die is provided on the inner wall of the threading hole. After the end of the steel bar extends into the threading machine main body, the three-jaw chuck or four-jaw chuck on the end face of the rotating headstock clamps the steel bar to prevent the steel bar from rotating during threading, resulting in unsuccessful threading.

[0009] Furthermore, the device further includes two slide rails and a sliding seat symmetrically arranged on both sides of the base along the length direction. The threading mechanism is arranged on the sliding seat, and both ends of the sliding seat are slidably connected to the two slide rails. The slide rails are parallel to the axis of the threading mechanism, and an adjusting rod for driving the sliding seat to move along the slide rail is provided at one end of the sliding seat. Before threading, the threading mechanism can move back and forth along the slide rail to adjust the position; after the chuck clamps the steel bar, the threading machine main body threads the steel bar, and the position of the rotating headstock remains unchanged. The threading machine main body threads the steel bar along the slide rail, which can ensure the integrity of the thread teeth after threading.

[0010] Preferably, a chute plate is provided at the bottom of the bench vice, and a bench vice fixing block fixedly connected and a bench vice sliding block sliding relative to each other are provided on the chute plate; a threaded hole is provided in the middle of the rear end of the bench vice fixing block; two dovetail grooves are opened on the chute plate, and a slider is provided on the bottom surface of the bench vice sliding block and is slidably connected to the dovetail groove in a matching manner; an L-shaped plate is provided at the outer end of the chute plate, and a threaded hole is provided on its vertical plate. A lead screw is threadedly connected to the threaded hole, and the inner end of the lead screw is rotatably connected to the bench vice fixing block. The bench vice sliding block cooperates with the chute plate and can slide relative to each other along the dovetail groove. With the cooperation of the lead screw, the position of the bench vice sliding block can be controlled by the lead screw.

[0011] Furthermore, clamping teeth are alternately arranged between the bench vice fixing block and the bench vice sliding block. The alternate arrangement of the clamping teeth can clamp the steel bar more stably and prevent the rotation of the steel bar.

[0012] Preferably, the cutting and grinding mechanism includes a motor, a support frame, a cutting saw blade and a grinding disc; the lower end of the support frame is hinged to the pedestal through a pin shaft, the motor is horizontally installed at the upper end of the support frame, the cutting saw blade is installed at the output end of the motor, the diameter of the cutting saw blade is larger than that of the grinding disc, the grinding disc is concentrically and fixedly connected to the outer side of the cutting saw blade, and a protective cover is installed on the cutting saw blade. The cutting saw blade can flatten the end face of the steel bar. When the steel bar is withdrawn after threading, the grinding disc is used to grind the burrs on the end face of the steel bar to make the end face smoother.

[0013] Preferably, a torsion spring is sleeved on the pin shaft, a baffle is provided at the inner end of the pedestal, one end of the torsion spring is supported on the baffle, and the other end is supported on the support frame. The two ends of the rotating spring are respectively abutted against the cutting and grinding mechanism and the pedestal, and the cutting and grinding mechanism can automatically bounce back after being pressed down.

[0014] Further, a pressing handle is provided above the protective cover, and a switch of the motor is arranged inside the pressing handle. It can control the start and stop of the motor to ensure safety during the use of the device.

[0015] The thread rolling machine with the functions of cutting and grinding the end of the threaded steel bar of the present utility model can level the end face of the steel bar through the cutting saw blade before threading the steel bar. After threading, the burrs on the end face of the steel bar can also be ground through the grinding piece on the cutting saw blade to make the end face of the steel bar flat again. When two steel bars are connected, the end faces can be closely attached, increasing the strength and shear resistance at the connection. There is no need to grind each one by one with an angle grinder after threading, reducing the consumption of manpower and improving the processing efficiency. Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the thread rolling machine with the functions of cutting and grinding the end of the threaded steel bar of the present utility model Figure 1 ;

[0017] Figure 2 is the structural schematic diagram of the thread rolling machine with the functions of cutting and grinding the end of the threaded steel bar of the present utility model Figure 2 ;

[0018] Figure 3 is the side view of the thread rolling machine with the functions of cutting and grinding the end of the threaded steel bar of the present utility model;

[0019] Figure 4 is the structural schematic diagram of the cutting mechanism (removing the clamping mechanism);

[0020] Figure 5 is Figure 4 the side view of;

[0021] Figure 6 is Figure 5 the A-A cross-sectional view of;

[0022] Figure 7 is Figure 5 the B-B cross-sectional view of.

[0023] In the figure: 01. Base, 02. Clamping and cutting device, 03. Thread rolling mechanism; 21. Bench, 211. Spring baffle, 221. Slide groove plate, 2211. Dovetail groove, 222. Bench vice fixing block, 223. Bench vice movable block, 2231. Dovetail slide, 224. L-shaped plate, 225. Lead screw, 226. Clamping teeth, 231. Motor, 232. Support frame, 233. Protective cover, 2331. Pressing handle, 234. Cutting saw blade, 235. Grinding piece, 24. Pin shaft, 25. Rotating spring; 31. Thread rolling machine main body, 32. Rotating head, 321. Three-jaw chuck, 33. Sliding seat, 34. Slide rail, 35. Adjusting rod. Detailed implementation mode

[0024] Example 1: Refer to Figures 1-7 , a threading machine with the function of cutting and grinding the end of ribbed steel bars, including a base 01, a clamping and cutting device 02, and a threading mechanism 03; the threading mechanism 03 is arranged on the base 01, and a driving device connected to the threading mechanism 03 is installed inside the base 01; the threading mechanism 03 includes a threading machine main body 31 and a rotating head 32; the rotating head 32 is connected to the front end of the threading machine; it can clamp the steel bar to ensure that the steel bar will not rotate during threading.

[0025] The clamping and cutting device 02 is arranged at the front end of the rotating head 32, the bottom of the clamping and cutting device 02 is connected to the base 01, and the clamping and cutting device 02 includes a pedestal 21, a bench vice, and a cutting and grinding mechanism; the cutting and grinding mechanism is hinged to the end of the pedestal 21; the bench vice is fixedly connected to the pedestal 21.

[0026] A through hole is arranged in the middle of the end face of the rotating head 32, and a chuck is also arranged on the end face; a threading hole is concentrically arranged on the end face of the threading machine main body 31, and a die is arranged on the inner wall of the threading hole. After the end of the steel bar extends into the threading machine main body 31, the three-jaw chuck 321 or four-jaw chuck on the end face of the rotating head 32 clamps the steel bar to prevent the steel bar from rotating during threading, resulting in unsuccessful threading.

[0027] The device also includes two slide rails 34 and a sliding seat 33 symmetrically arranged on both sides of the base 01 along the length direction. The threading mechanism 03 is arranged on the sliding seat 33. Both ends of the sliding seat 33 are slidably connected to the two slide rails 34. The slide rails 34 are parallel to the axis of the threading mechanism 03. An adjusting rod 35 for driving it to move along the slide rail 34 is arranged at one end of the sliding seat 33. Before threading, the threading mechanism 03 can move back and forth along the slide rail 34 to adjust the position; after the chuck clamps the steel bar, the threading machine main body 31 threads the steel bar, and the position of the rotating head 32 remains unchanged. The threading machine main body 31 threads the steel bar along the slide rail 34, which can ensure the integrity of the thread after threading.

[0028] The bottom of the bench vice is provided with a chute plate 221, on which a fixedly connected bench vice fixing block 222 and a relatively sliding bench vice sliding block are arranged; a threaded hole is arranged in the middle of the rear end of the bench vice fixing block 222; two dovetail grooves 2211 are formed on the chute plate 221, and sliding blocks that are matched and slidably connected in the dovetail grooves 2211 are arranged on the bottom surface of the bench vice sliding block; an L-shaped plate is arranged at the outer end of the chute plate 221, a threaded hole is arranged on its vertical plate, a lead screw 225 is threadedly connected in the threaded hole, and the inner end of the lead screw 225 is rotatably connected to the bench vice fixing block 222. The bench vice sliding block cooperates with the chute plate 221 and can slide relatively along the dovetail groove 2211. With the cooperation of the lead screw 225, the position of the bench vice sliding block can be controlled by the lead screw 225. Clamping teeth 226 are arranged alternately between the bench vice fixing block 222 and the bench vice sliding block. The staggered arrangement of the clamping teeth 226 can clamp the steel bar more stably and prevent the rotation of the steel bar.

[0029] Embodiment 2, see the attached drawings of the specification Figures 3-7 Based on Embodiment 1, the cutting and grinding mechanism is set to include a motor 231, a support frame 232, a cutting saw blade 234 and a grinding disc 235; the lower end of the support frame 232 is hinged to the pedestal 21 through a pin shaft 24, the motor 231 is horizontally installed at the upper end of the support frame 232, the cutting saw blade 234 is installed at the output end of the motor 231, the diameter of the cutting saw blade 234 is larger than that of the grinding disc 235, the grinding disc 235 is concentrically and fixedly connected to the outer side surface of the cutting saw blade 234, and a protective cover 233 is installed on the cutting saw blade 234. The cutting saw blade 234 can level the end face of the steel bar. When the steel bar is withdrawn after threading, the grinding disc 235 is used to grind the burrs on the end face of the steel bar to make the end face smoother.

[0030] A torsion spring is sleeved on the pin shaft 24, a baffle is arranged at the inner end of the pedestal 21, one end of the torsion spring is supported on the baffle, and the other end is supported on the support frame 232. Both ends of the rotary spring 25 are respectively abutted against the cutting and grinding mechanism and the pedestal 21, and it can automatically bounce back after pressing down the cutting and grinding mechanism.

[0031] A pressing handle 2331 is arranged above the protective cover 233, and a switch of the motor 231 is arranged inside the pressing handle 2331. It can control the start and stop of the motor 231 and ensure safety during the use of the device.

[0032] ① Place the end of the steel bar on the bench vice, extend it a certain length, and rotate the lead screw 225 to clamp it;

[0033] ② Press down the cutting and grinding mechanism and then start the motor 231. The motor 231 drives the cutting saw blade 234 to rotate and cut off a certain thickness of the end of the steel bar;

[0034] ③ Loosen the vise and chuck, and adjust the threading mechanism 03 to a suitable position and fix it;

[0035] ④ Insert the steel bar after the end cutting voucher into the interior of the threading machine main body 31, and make the end face abut against the threading dies; then tighten the chuck and vise in sequence;

[0036] ⑤ Start the threading mechanism 03, and drive the threading mechanism 03 to move forward along the slide rail 34 through the adjusting rod 35 to thread the steel bar;

[0037] ⑥ After threading is completed, rotate the threading mechanism 03 and the adjusting rod 35 in the reverse direction to withdraw the steel bar;

[0038] ⑦ Loosen the chuck and vise, and withdraw the steel bar;

[0039] ⑧ Place the steel bar at a suitable position again, press down the cutting and grinding mechanism, and make the end face of the steel bar abut against the grinding disc 235 for grinding;

[0040] ⑨ After grinding is completed, withdraw the steel bar, and the threading of the steel bar is completed.

Claims

1. A threading machine with the function of cutting and grinding the end of threaded steel bars, characterized in that: It includes a base, a clamping and cutting device and a threading mechanism; the threading mechanism is arranged on the base, and a driving device connected to the threading mechanism is installed inside the base; the threading mechanism includes a threading machine body and a rotating head; the rotating head is connected to the front end of the threading machine; The clamping and cutting device is arranged at the front end of the rotating machine head, and the bottom of the clamping and cutting device is connected to the base. The clamping and cutting device comprises a base, a vise and a cutting and grinding mechanism; the cutting and grinding mechanism is hinged at the end of the base; the vise and the base are fixed to each other.

2. The threading machine with the function of cutting and grinding the end of threaded steel bars according to claim 1, characterized in that: A through hole is arranged in the middle of the end face of the rotating machine head, and a chuck is also arranged on the end face; a threading hole is concentrically arranged on the end face of the threading machine body, and a die is arranged on the inner wall of the threading hole.

3. The threading machine with the function of cutting and grinding the end of threaded steel bars according to claim 2, characterized in that: The device also includes two slide rails and a sliding seat symmetrically arranged on both sides of the base along the length direction. The threading mechanism is arranged on the sliding seat. Both ends of the sliding seat are slidably connected to the two slide rails. The slide rails are parallel to the axis of the threading mechanism. An adjustment rod is arranged at one end of the sliding seat to drive it to move along the slide rail.

4. The threading machine with the function of cutting and grinding the end of threaded steel bar according to claim 1, characterized in that: The bottom of the bench vise is provided with a slide plate, and a fixedly connected bench vise fixing block and a relatively sliding bench vise sliding block are provided on the slide plate; a threaded hole is provided in the middle of the rear end of the bench vise fixing block; two dovetail grooves are opened on the slide plate, and a sliding block matching and slidingly connected in the dovetail groove is provided on the bottom surface of the bench vise sliding block; an L-shaped plate is provided at the outer end of the slide plate, and a threaded hole is provided on its vertical plate, and a lead screw is threadedly connected in the threaded hole, and the inner end of the lead screw is rotatably connected to the bench vise fixing block.

5. The threading machine with the function of cutting and grinding the end of threaded steel bar according to claim 4, characterized in that: Clamping teeth are alternately arranged between the bench vise fixed block and the bench vise sliding block.

6. The threading machine with the function of cutting and grinding the end of threaded steel bars according to claim 1, characterized in that: The cutting and grinding mechanism includes a motor, a support frame, a cutting saw blade and a grinding sheet; the lower end of the support frame is hinged to the base through a pin shaft, the motor is transversely installed on the upper end of the support frame, the cutting saw blade is installed on the output end of the motor, the diameter of the cutting saw blade is larger than the diameter of the grinding sheet, the grinding sheet is concentrically fixedly connected to the outer side surface of the cutting saw blade, and a protective cover is installed on the cutting saw blade.

7. The threading machine with the function of cutting and grinding the end of threaded steel bars according to claim 6, characterized in that: The pin shaft is sleeved with a torsion spring, the inner end of the pedestal is provided with a baffle, one end of the torsion spring is supported on the baffle, and the other end is supported on the supporting frame.

8. The threading machine with the function of cutting and grinding the end of threaded steel bar according to claim 6, characterized in that: A push-down handle is arranged above the protective cover, and a switch of the motor is arranged inside the push-down handle.

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