Cold heading, tapping and oil removing all-in-one machine

By designing an integrated cold heading, tapping, and degreasing machine, which combines cold heading, tapping, and degreasing processes, the problems of low production efficiency and low automation in existing technologies have been solved, and efficient automated production of threaded fasteners has been achieved.

CN224158049UActive Publication Date: 2026-04-24TIANJIN STAR HENGNENG TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN STAR HENGNENG TECH DEV CO LTD
Filing Date
2025-03-13
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The existing threaded fastener processing technology is completed in steps, resulting in low work efficiency, large footprint, discontinuous production process, and reliance on manual operation, making it difficult to achieve automation.

Method used

Design a cold heading, tapping and degreasing integrated machine that integrates a cold heading machine, a tapping assembly and a degreasing assembly to realize the automation of cold heading, tapping and degreasing processes. The threading and oil removal are achieved through the cooperation of gears and taps.

Benefits of technology

It improves production efficiency, reduces manual intervention and equipment downtime, lowers labor costs, and enables highly efficient automated production of threaded fasteners.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of nut machining, in particular to a cold heading, tapping and deoiling all-in-one machine which comprises a cold heading machine, a tapping machine and a deoiling machine. The tapping assembly can be used for machining threads on the blank; and the oil removing assembly can remove oil on the blank. According to the cold heading, tapping and oil removing all-in-one machine, the three processes of cold heading, tapping and oil removing are integrated on one device, waiting time and discontinuity caused by step-by-step operation in a traditional process are avoided, and therefore the production efficiency is remarkably improved. Automatic matching of all procedures can achieve continuous machining, and manual intervention and equipment idle time are reduced. According to the equipment, the feeding and discharging procedures can be automatically completed, and the requirement for manual operation is greatly reduced, so that the labor cost is reduced, and the economical efficiency of production is improved.
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Description

Technical Field

[0001] This utility model relates to the field of nut processing technology, and in particular to a cold heading, tapping and degreasing integrated machine. Background Technology

[0002] In the machining of threaded fasteners, common process flows include degreasing before tapping or tapping before degreasing, etc. However, existing processes are usually completed in steps. For example, cold heading is mainly used for forming nut blanks, tapping equipment is used to complete the tapping process, and degreasing equipment usually uses centrifugal oil removal. There are obvious separations between these processes, resulting in low work efficiency, large footprint, discontinuous production flow, and the need for manual handling, which restricts the realization of automation.

[0003] There are many types of tapping equipment available, including CNC electric tapping machines, automatic tapping machines, and benchtop tapping machines. However, most tapping machines are single-function, requiring additional equipment for degreasing after the tapping process. Current degreasing equipment is also relatively primitive. Although it can achieve single-machine automation, it generally uses centrifugal oil removal and typically operates only in an intermittent continuous mode. This mode requires the machine to have a material storage device, resulting in complex equipment structure and increased costs.

[0004] Furthermore, the loading and unloading of existing tapping equipment largely rely on manual operation, which not only increases labor costs but also reduces work efficiency, thereby affecting processing quality. Therefore, there is an urgent need for an automated production line that integrates cold heading, tapping, and degreasing processes to improve work efficiency, reduce manual intervention, and lower equipment costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a cold heading, tapping and degreasing integrated machine.

[0006] This utility model is achieved through the following technical solution:

[0007] A cold heading, tapping, and degreasing integrated machine, comprising:

[0008] A cold heading machine is capable of cutting billets;

[0009] A tapping assembly capable of machining threads on the workpiece;

[0010] An oil removal component that removes oil from the blank.

[0011] Preferably, the tapping assembly includes a drive component, a gear, and a tap;

[0012] The driving component is connected to the gear and can drive the gear to rotate. The gear is provided with a central through hole. The tap portion extends into the through hole. The shape of the central through hole matches the shape of the blank so that the blank falls into the central through hole.

[0013] When the gear rotates, it can drive the blank in the central through hole to rotate relative to the tap, so that the tap can machine threads on the blank.

[0014] Preferably, the tapping assembly includes a plurality of gears and a plurality of taps, wherein the taps are arranged in a one-to-one correspondence with the gears.

[0015] Preferably, the tapping assembly further includes:

[0016] The intermediate plate has multiple material distribution through holes, each corresponding to a central through hole.

[0017] A first feeding component is disposed above the intermediate plate. The driving component is connected to the first feeding component and can drive the first feeding component to rotate so that the blank on the intermediate plate falls into the material distribution through hole.

[0018] Preferably, the tapping assembly further includes:

[0019] A top plate is disposed above the intermediate plate, and a feed hole is provided on the top plate;

[0020] The first slide rail is connected at one end to the cold heading machine and at the other end to the feed hole, through which the billet output by the cold heading machine can fall into the feed hole.

[0021] Preferably, the tapping assembly further includes multiple cylinders, which are disposed above the intermediate plate. Each cylinder corresponds to one of the material distribution holes, and the cylinders can drive the blank through the material distribution holes into the central through hole.

[0022] Preferably, the tapping assembly further includes:

[0023] A feed channel component, which has a feed channel inside, and the tap portion is disposed inside the feed channel;

[0024] A base plate is disposed below the material channel component, and the base plate is capable of bearing the billet falling from the material channel;

[0025] The second slide is connected at one end to the base plate and at the other end to the oil removal assembly;

[0026] The second feeding component is disposed above the base plate. The driving component is connected to the second feeding component and can drive the second feeding component to rotate so that the blank on the bottom falls into the second slide.

[0027] Preferably, the oil removal assembly includes

[0028] A turntable that can hold the billet and drive the billet to move;

[0029] A limiting member is disposed above the turntable, and the limiting member can restrict the movement direction of the blank on the turntable;

[0030] An air nozzle is used to output airflow to the blank on the turntable to remove oil from the blank.

[0031] Preferably, the turntable has a groove on its edge and a recess in its center. The bottom of the recess has an oil drain hole, so that oil that has detached from the blank can fall into the recess along the groove and be discharged through the oil drain hole.

[0032] The beneficial effects of this invention are as follows: the cold heading machine, tapping assembly, and degreasing assembly are arranged sequentially. The cold heading machine can cut the nut blank, the tapping assembly can process threads on the nut blank, and the degreasing assembly can remove oil from the nut blank. This invention's integrated cold heading, tapping, and degreasing machine integrates the three processes of cold heading, tapping, and degreasing into one device, avoiding the waiting time and discontinuity caused by step-by-step operations in traditional processes, thus significantly improving production efficiency. The automated coordination of each process enables continuous processing, reducing manual intervention and equipment idle time. The equipment of this invention can automatically complete the loading and unloading processes, greatly reducing the need for manual operation, thereby lowering labor costs and improving the economic efficiency of production.

[0033] Furthermore, the shape of the central through-hole of the gear matches the outer wall shape of the nut blank. After the nut blank enters the central through-hole of the gear, the drive component can also drive the nut blank to rotate when it drives the gear to rotate. A tap is positioned inside the central through-hole and can extend into the central hole of the nut blank. As the nut blank rotates, the tap remains stationary to machine threads on the wall of the central hole of the nut blank. Furthermore, the tapping assembly includes multiple sets of gears and taps to simultaneously process multiple nut blanks.

[0034] Furthermore, the degreasing assembly includes a turntable and an air nozzle. The turntable can drive the nut blank to rotate, and the air nozzle is set on the movement path of the nut blank. The air nozzle can output airflow to the nut blank to blow off the oil on the nut blank. Attached Figure Description

[0035] Figure 1This is a schematic diagram of the outer wall structure of the integrated cold heading, tapping, and degreasing machine of this utility model. The cold heading machine is not shown in the figure.

[0036] Figure 2 This is a schematic diagram of the internal structure of the tapping assembly of this utility model.

[0037] Figure 3 This is a schematic diagram of the external structure of the tapping assembly of this utility model.

[0038] Figure 4 This is a structural schematic diagram of the intermediate plate and the first feeding component of this utility model.

[0039] Figure 5 This is a structural schematic diagram of the gear and feed channel components of this utility model.

[0040] Figure 6 This is a schematic diagram of the internal structure of the gear and tap of this utility model.

[0041] Figure 7 This is a schematic diagram of the internal structure of the integrated cold heading, tapping, and degreasing machine of this utility model. The cold heading machine is not shown in the figure.

[0042] Figure 8 This is a schematic diagram of the connection structure of the central gear and the gear in this utility model.

[0043] Figure 9 This is a structural schematic diagram of the base plate and the second feed piece of this utility model.

[0044] Figure 10 This is a schematic diagram of the external structure of the oil removal component of this utility model.

[0045] Figure 11 This is a schematic diagram of the internal structure of the oil removal component of this utility model.

[0046] Figure 12 This is a schematic diagram of the turntable structure of this utility model.

[0047] In the diagram: 1. First slide rail; 2. First feeder; 3. Gear; 4. Cylinder; 5. Tap; 6. Feed channel component; 7. Second feeder; 8. Second slide rail; 9. Drive component; 10. Top plate; 11. Intermediate plate; 12. Conical plate; 13. Bottom plate; 14. Cylinder; 15. Feed hole; 16. Distribution through hole; 17. First feeder arm; 18. Central through hole; 19. Feed channel; 20. Second feeder arm; 21. Turntable; 22. Limiting component; 23. Air nozzle; 24. Groove; 25. Recess; 26. Oil leakage hole; 27. First driving pulley; 28. First driven pulley; 29. ​​First drive shaft; 30. Second driving pulley; 31. Second driven pulley; 32. Second drive shaft; 33. Central gear. Detailed Implementation

[0048] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0049] In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0050] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] This utility model provides an integrated machine for cold heading, tapping, and degreasing. (Refer to...) Figure 1 The cold heading, tapping and degreasing integrated machine includes a cold heading machine (not shown in the figure), a tapping assembly and a degreasing assembly.

[0052] A cold heading machine is used to cut blanks for machining nuts. The cut blank has a hexagonal prism outer wall and a central hole inside. The specific structure of the cold heading machine is the same as that of existing cold heading machines, so it will not be described in detail here.

[0053] Reference Figure 2 The tapping assembly includes a frame, a first slide rail 1, a first feed feeder 2, a gear 3, a cylinder 4, a tap 5, a feed channel 6, a second feed feeder 7, a second slide rail 8, and a drive unit 9. The frame includes a top plate 10, a middle plate 11, a tapered plate 12, a bottom plate 13, and a cylinder 14.

[0054] Reference Figure 3 The top plate 10 is provided with a feed hole 15. One end of the first slide rail 1 is connected to the discharge port of the cold heading machine, and the other end is connected to the feed hole 15 of the top plate 10. The cold heading machine includes a pusher that can drive the billet into the first slide rail 1 so that the billet enters the feed hole 15 along the first slide rail 1.

[0055] Reference Figure 4The intermediate plate 11 is located below the top plate 10. After the billet enters the feed hole 15, it falls onto the intermediate plate 11. The intermediate plate 11 is provided with multiple material distribution holes 16. Furthermore, a tapered plate 12 is provided between the top plate 10 and the intermediate plate 11, with the larger end of the tapered plate 12 facing the top plate 10 and the smaller end facing the intermediate plate 11, so that the billet is concentrated on the intermediate plate 11.

[0056] The first feeding component 2 is disposed above the intermediate plate 11. The first feeding component 2 includes multiple first feeding arms 17, which extend from the center of the intermediate plate 11 towards the edge and are in contact with the upper surface of the intermediate plate 11. The driving component 9 is connected to the first feeding component 2 and can drive the first feeding component 2 to rotate, causing the first feeding arms 17 to rotate. The rotating first feeding arms 17 can move the blank on the intermediate plate 11 towards the edge of the intermediate plate 11, closer to the material distribution through hole 16.

[0057] Reference Figure 5 and Figure 6 Gear 3 is positioned below the intermediate plate 11. A central through hole 18 is provided in the center of gear 3. The central through hole 18 is hexagonal in shape, and its shape matches the outer wall shape of the billet so that the billet can be embedded in the central through hole 18. The material distribution through holes 16 on the intermediate plate 11 are correspondingly provided with the central through hole 18 of gear 3, so that the billet can enter the central through hole 18 through the material distribution through holes 16. Gear 3 and the material distribution through holes 16 on the intermediate plate 11 are arranged in a one-to-one correspondence.

[0058] Reference Figure 2 Multiple cylinders 4 are installed on the top plate 10, and each cylinder 4 is corresponding to a material distribution through hole 16. The free end of the cylinder 4 faces the material distribution through hole 16. When the first feeding arm 17 drives the billet to move to the material distribution through hole 16, the first feeding component 2 stops rotating, and the free end of the cylinder 4 extends downward to push the billet into the central through hole 18.

[0059] Reference Figure 7 and Figure 8 The driving component 9 is connected to the central gear 33, which meshes with multiple gears 3. The driving component 9 can drive the central gear 33 to rotate, causing the gears 3 to rotate accordingly. The blank embedded in the central through hole 18 can rotate with the gears 3.

[0060] Reference Figure 6 The upper end of tap 5 extends into the central through hole 18 of gear 3. When gear 3 drives the workpiece to rotate, tap 5 remains fixed, allowing it to penetrate the central hole of the workpiece and machine threads on the inner wall of the central hole. Furthermore, the workpiece moves downward along the threads of tap 5.

[0061] A feed channel 6 is positioned below the gear 3. Inside the feed channel 6 is a feed channel 19, the upper opening of which faces the lower end of the central through-hole 18 of the gear 3. The feed channel 19 forms an outlet on the side wall of the feed channel 6. The tap 5 is approximately L-shaped, with its lower part positioned within the feed channel 19. The billet moves along the tap 5 and the feed channel 19, and is discharged through the outlet of the feed channel 19. The feed channel 19 is larger than the billet to ensure it does not obstruct the billet's movement.

[0062] Reference Figure 7 The base plate 13 is positioned below the feed channel 6, and the billet discharged from the feed channel 19 will fall onto the base plate 13. (Refer to...) Figure 9 The second feeding component 7 is disposed above the base plate 13. The second feeding component 7 includes multiple second feeding arms 20, which extend from the center of the base plate 13 towards its edge and are in contact with the upper surface of the base plate 13. A driving component 9 is connected to the second feeding arms 20 and can drive them to rotate, causing the blank on the base plate 13 to move towards its edge. The lower opening of the cylinder 14 is connected to the upper surface of the base plate 13, and the inner wall of the cylinder 14 restricts the movement range of the blank on the base plate 13. An opening is provided at the edge of the base plate 13, and one end of the second slide rail 8 is connected to the opening while the other end is connected to the degreasing assembly. Rotation of the second feeding component 7 drives the blank on the base plate 13 into the second slide rail 8 and along the second slide rail 8 into the degreasing assembly.

[0063] Reference Figure 10 and Figure 11 The degreasing assembly includes a turntable 21, a limiting member 22, and an air nozzle 23. The limiting member 22 is positioned above the turntable 21, and the space between the limiting member 22 and the turntable 21 forms a billet degreasing channel. A second slide rail 8 connects to the degreasing channel, allowing the billet to enter along the second slide rail 8. The turntable 21 carries the billet. A driving member 9 is connected to the turntable 21, causing it to rotate and move the billet along the degreasing channel. The air nozzle 23 is connected to a high-pressure air source. The air nozzle 23 outputs a high-pressure airflow to the billet within the degreasing channel to remove oil from the billet. (Refer to...) Figure 12 The turntable 21 has multiple grooves 24 along its edge, arranged radially and evenly along its circumference. A groove 25 and an oil drain hole 26 are located in the center of the turntable 21. Oil falling from the billet falls into the grooves 24, flows along the grooves into the grooves 25, and is discharged through the oil drain hole 26, thus completing the degreasing of the billet.

[0064] Reference Figure 7The driving component 9 is specifically a rotary motor. The output shaft of the rotary motor is connected to a first driving pulley 27. The first driving pulley 27 is connected to a first driven pulley 28 via a transmission belt. The first driven pulley 28 is fixedly connected to a first transmission shaft 29. The first material feeding component 2, the central gear 33, and the second material feeding component 7 are fixedly connected to the first transmission shaft 29. A second driving pulley 30 is also fixedly connected to the first transmission shaft 29. The second driving pulley 30 is connected to a second driven pulley 31 via a transmission belt. The second driven pulley 31 is fixedly connected to a second transmission shaft 32. The turntable 21 is fixedly connected to the second transmission shaft 32.

[0065] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cold heading, tapping, and degreasing integrated machine, characterized in that, include: A cold heading machine is capable of cutting billets; A tapping assembly capable of machining threads on the workpiece; An oil removal assembly capable of removing oil from the blank; The tapping assembly includes a drive unit, gears, and a tap; The driving component is connected to the gear and can drive the gear to rotate. The gear is provided with a central through hole. The tap portion extends into the through hole. The shape of the central through hole matches the shape of the blank so that the blank falls into the central through hole. When the gear rotates, it can drive the blank in the central through hole to rotate relative to the tap, so that the tap can machine threads on the blank; The oil removal component includes: A turntable that can hold the billet and drive the billet to move; A limiting member is disposed above the turntable, and the limiting member can restrict the movement direction of the blank on the turntable; An air nozzle is used to output airflow to the blank on the turntable to remove oil from the blank.

2. The integrated cold heading, tapping, and degreasing machine according to claim 1, characterized in that, The tapping assembly includes multiple gears and multiple taps, with each tap corresponding to one of the gears.

3. The cold heading, tapping, and degreasing integrated machine according to claim 2, characterized in that, The tapping assembly also includes: The intermediate plate has multiple material distribution through holes, each corresponding to a central through hole. A first feeding component is disposed above the intermediate plate. The driving component is connected to the first feeding component and can drive the first feeding component to rotate so that the blank on the intermediate plate falls into the material distribution through hole.

4. The integrated cold heading, tapping, and degreasing machine according to claim 3, characterized in that, The tapping assembly also includes: A top plate is disposed above the intermediate plate, and a feed hole is provided on the top plate; The first slide rail is connected at one end to the cold heading machine and at the other end to the feed hole, through which the billet output by the cold heading machine can fall into the feed hole.

5. The integrated cold heading, tapping, and degreasing machine according to claim 3, characterized in that, The tapping assembly also includes multiple cylinders, which are disposed above the intermediate plate. Each cylinder corresponds to a material distribution through hole, and the cylinder can drive the blank through the material distribution through hole into the central through hole.

6. The integrated cold heading, tapping, and degreasing machine according to claim 1, characterized in that, The tapping assembly also includes: A feed channel component, which has a feed channel inside, and the tap portion is disposed inside the feed channel; A base plate is disposed below the material channel component, and the base plate is capable of bearing the billet falling from the material channel; The second slide is connected at one end to the base plate and at the other end to the oil removal assembly; The second feeding component is disposed above the base plate. The driving component is connected to the second feeding component and can drive the second feeding component to rotate so that the blank on the base plate falls into the second slide.

7. The integrated cold heading, tapping, and degreasing machine according to claim 1, characterized in that, The turntable has grooves along its edge and a recess in its center. An oil drain hole is located at the bottom of the recess, allowing oil that has detached from the blank to fall into the recess along the grooves and be drained through the oil drain hole.