CN106903245B

CN106903245B - Thread rolling machine

Info

Publication number: CN106903245B
Application number: CN201611035766.9A
Authority: CN
Inventors: 李柏霆
Original assignee: Chien Tsai Machinery Enterprise Co ltd
Current assignee: Chien Tsai Machinery Enterprise Co ltd
Priority date: 2015-12-22
Filing date: 2016-11-23
Publication date: 2020-06-30
Anticipated expiration: 2036-11-23
Also published as: TWI644743B; TW201722591A; CN106903245A

Abstract

A thread rolling machine is suitable for rolling threads on a blank. The thread rolling machine comprises a machine base, a thread rolling device, a feeding device and a motor unit. The thread rolling device is arranged on the machine base and comprises a fixed thread plate and a movable thread plate which is spaced from the fixed thread plate. The feeding device conveys the blank to the thread rolling device. The motor unit can drive the thread rolling device to operate and comprises a first motor and a second motor which are spaced from each other, a speed reducer connected with the second motor and a clutch arranged between the first motor and the speed reducer. The motor unit is not easy to damage when the machine is inching, and has the advantages that blanks cannot be clamped between the fixed tooth plate and the movable tooth plate when tooth rubbing is tried.

Description

Thread rolling machine

Technical Field

The scheme relates to a thread machining machine, in particular to a thread rolling machine.

Background

Referring to fig. 1 and 2, a conventional thread rolling machine is adapted to roll threads on a surface of a blank (not shown) without threads, so that the blank becomes an object such as a screw, a bolt, or a bolt. The thread rolling machine comprises a base 11, a thread rolling device 12 arranged on the base 11, a feeding device 13 arranged on the base 11 and used for feeding blanks into the thread rolling device 12, a motor 14 used for providing power, and a transmission device 15 used for transmitting the power of the motor 14 to the thread rolling device 12.

The thread rolling device 12 includes a fixed thread plate 121, and a movable thread plate 122 capable of moving in parallel with respect to the fixed thread plate 121. The fixed dental plate 121 and the movable dental plate 122 are respectively provided with teeth. The feeding device 13 includes a vibration plate 131 for holding the blank material, and a conveying unit 132 connected between the vibration plate 131 and the thread rolling device 12. When the blank is vibrated by the vibration plate 131, the blank is moved to the thread rolling device 12 by the conveying unit 132. The motor 14 is disposed on the base 11. The transmission device 15 can use a transmission belt or other conventional transmission methods to make the motor 14 drive the thread rolling device 12 to operate.

Such a thread rolling machine usually has two operation modes, one is a continuous operation mode in which the movable die plate 122 continuously and rapidly moves relative to the fixed die plate 121 during continuous production of finished products, and the other is an inching mode in which the fixed die plate 121 and the movable die plate 122 slowly and intermittently move. In the continuous mode, the motor 14 will run at a high speed to facilitate full power production. This inching mode is often used when a production calibration is just started.

For example, when a batch of screws is finished and another batch of screws with different threads or different lengths is to be produced, the trial thread needs to be corrected to ensure that the threads of the produced finished product meet the requirements. In order to avoid unnecessary waste of blanks during calibration, one or a few blanks are usually used for testing, so that the movable die 122 is intermittently and slowly moved relative to the fixed die 121, and the single blank is tried to be milled, and whether the milled threads are normal is observed. In the inching mode, the motor 14 is easily overheated and damaged because the motor 14 needs to be switched between high and low speed operation to drive the movable dental plate 122 to move intermittently. In addition, in the thread rolling machine, there is a problem that the blank is stuck between the fixed tooth plate 121 and the movable tooth plate 122 during the calibration, and the thread rolling device 12 needs to be disassembled to take out the stuck blank, which is inconvenient and needs to be improved.

Disclosure of Invention

The object of the present invention is to provide a thread rolling machine which solves at least one of the problems of the background art.

The invention relates to a thread rolling machine which is suitable for rolling threads on a blank to enable the blank to be provided with threads, and comprises a base, a thread rolling device arranged on the base, a feeding device used for conveying the blank to the thread rolling device, and a motor unit capable of driving the thread rolling device to rotate, wherein the thread rolling device comprises a fixed tooth plate and a movable tooth plate which is separated from the fixed tooth plate, the movable tooth plate can be driven by the motor unit to move relative to the fixed tooth plate and is matched with the fixed tooth plate to roll the threads on the blank, the motor unit comprises a first motor capable of rotating spontaneously and independently, a second motor separated from the first motor, a speed reducer connected with the second motor, and a clutch arranged between the first motor and the speed reducer, when the first motor does not rotate spontaneously, the second motor can drive the first motor to rotate through the speed reducer and the clutch.

According to the thread rolling machine, the rotating speed of the first motor is not lower than that of the second motor.

According to the thread rolling machine, the rotating speed of the first motor is 1750rpm, the rotating speed of the second motor is 1750rpm, and the reduction ratio of the speed reducer is 1: 30.

The clutch of the thread rolling machine is an electromagnetic clutch.

The tooth rubbing machine has the effects that: when the continuous motion is required to be switched to the inching motion, the clutch can enable the motor unit to be switched to output power by the second motor, and damage to the first motor due to instant deceleration after high-speed operation can be avoided. In addition, the effect of amplifying the torsion through the speed reducer can drive the movable dental plate to move relative to the fixed dental plate with enough force, so that the blank cannot be clamped between the fixed dental plate and the movable dental plate.

Drawings

Other features and effects of the present disclosure will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of a conventional thread rolling machine;

FIG. 2 is a top view of the conventional thread rolling machine;

FIG. 3 is a perspective view of an embodiment of the thread rolling machine;

FIG. 4 is a top view of the embodiment;

FIG. 5 is an enlarged view of the circled portion of FIG. 4; and

fig. 6 is a top view of a motor unit of the embodiment, illustrating a fragmentary housing of the embodiment.

Detailed Description

Since the conventional thread rolling machine has a complicated structure, the conventional techniques which are not related to the present case will not be described in detail. The conventional art, whose description is omitted, can be understood by referring to taiwan patent No. I466746 and taiwan patent No. M412014.

Referring to fig. 3, 4 and 5, an embodiment of the thread rolling machine is suitable for rolling threads on a blank 9 (see fig. 5) so that the blank 9 has threads. The present embodiment comprises a generally rectangular base 2, a feeding device 4 for feeding the blank 9 to the threading device 3, a motor unit 5 capable of driving the threading device 3 to operate, and a transmission unit 6 connected between the threading device 3 and the motor unit 5, wherein the threading device 3 is disposed on the base 2.

The thread rolling device 3 comprises a fixed thread plate 31 and a movable thread plate 32 spaced from the fixed thread plate 31. The fixed die 31 and the movable die 32 cooperate to define a thread rolling channel 33. The movable dental plate 32 can move relative to the fixed dental plate 31 and cooperate with the fixed dental plate 31 to perform the thread rolling on the blank 9. When the blank 9 passes through the thread rolling channel 33, it is squeezed by the fixed thread plate 31 and the movable thread plate 32 to form a thread.

The feeding device 4 comprises a vibration plate 41, a conveying rail 42 connected between the vibration plate 41 and the thread rolling device 3, and a pushing member 43 capable of conveying the blanks 9 from the conveying rail 42 into the thread rolling channel 33. Since the vibration plate 41 is a conventional one, it is only shown in the drawing. The conveying rail 42 extends from the vibration plate 41 to the thread rolling device 3 and defines a feeding rail 421 communicating with the thread rolling channel 33. The pushing member 43 can push the blank 9 coming out from the feeding track 421 into the thread rolling channel 33, so that the blank 9 is clamped by the fixed tooth plate 31 and the movable tooth plate 32 to be rolled.

Referring to fig. 3, 4 and 6, the motor unit 5 includes a first motor 51 and a second motor 52 spaced apart from each other, a reducer 53 connected to the second motor 52, and a clutch 54 disposed between the first motor 51 and the reducer 53. The longitudinal direction D1 of the first motor 51 and the longitudinal direction D2 of the second motor 52 are perpendicular to each other, so that the first motor 51 and the second motor 52 are vertically spaced from each other. The first motor 51 is available from east, model 10Hp4p, has a dual-output shaft design, has 10 horsepower, and rotates at 1750 rpm. The second motor 52 is available from east, model 1Hp4p, in a vertical design, horsepower 1 horsepower, and speed 1750 rpm. The reducer 53 has a first side 531 connected to the second motor 52, and a second side 532 perpendicular to the first side 531 and connected to the clutch 54. The reducer 53 is available from Li Ming, is LMW-70-30-1-R in model number, and has the reduction ratio of 1: 30. The clutch 54 is electromagnetic, available from research and is of the type ENC 200. In other embodiments of the present invention, the first motor 51 can rotate at a higher speed than the second motor 52 to facilitate full speed operation.

The transmission unit 6 includes a transmission wheel 61 for driving the thread rolling device 3 to rotate, and a transmission belt 62 connected between the transmission wheel 61 and the first motor 51. Since the technology of operating the motor unit 5 to drive the thread rolling device 3 by the transmission mechanism is a conventional technology, a detailed description thereof will be omitted.

Referring to fig. 4, 5 and 6, the present embodiment can be changed between a continuous motion state and a inching state. This embodiment is in the continuous motion state when mass-producing the finished product. The clutch 54 disconnects the speed reducer 53 from the first motor 51, allowing the first motor 51 to operate independently at full speed, driving the thread rolling device 3 to operate rapidly, facilitating mass production and increasing production.

After a batch of finished products is produced, if another batch of finished products with different specifications needs to be produced, the user needs to perform trial thread rolling to correct the embodiment. Before the trial thread rolling, the operation of the first motor 51 needs to be stopped, or the first motor 51 needs to idle, and the clutch 54 is operated to link the speed reducer 53 and the first motor 51, so that the inching state is achieved in the present embodiment. In the inching state, the first motor 51 does not rotate spontaneously, and the second motor 52 can drive the first motor 51 to rotate through the reducer 53 and the clutch 54. The reducer 53 has an effect of amplifying the torque force by 30 times, and not only can easily overcome the larger static friction force faced by switching between stop and go when the movable dental plate 32 is driven to move for an inch, but also when the blank 9 fails to run and generates a huge friction force obstacle, the second motor 52 can also amplify the torque force through the reducer 53 to drive the movable dental plate 32 to forcefully take the blank 9 out of the thread rolling channel 33. In addition, the second motor 52 can reduce the damage caused by the switching between the operation and the stop due to the protection of a speed reducer 53.

In summary, the present embodiment has the following effects: when the continuous motion state is required to be switched to the inching state, the clutch 54 can convert the motor unit 5 to output power by the second motor 52, so as to prevent the first motor 51 from being damaged due to instant deceleration after high-speed operation. In addition, the effect of the reducer 53 for amplifying the torque force can also be sufficient to drive the movable dental plate 32 to move relative to the fixed dental plate 31, so that the blank 9 is not jammed between the fixed dental plate 31 and the movable dental plate 32, and the second motor 52 is protected by the reducer 53 and is less likely to be damaged.

Claims

1. The utility model provides a thread rolling machine, be suitable for on a stock thread rolling, make this stock have the screw thread, this thread rolling machine contains a frame, a thread rolling device of setting on this frame, a pan feeding device of carrying this stock to this thread rolling device, and a motor unit that can drive this thread rolling device operation, this thread rolling device includes a fixed dental lamina, and one and this fixed dental lamina looks spaced activity dental lamina, this activity dental lamina can be driven and this fixed dental lamina relatively removed by this motor unit, and cooperate with this fixed dental lamina and roll the thread to this stock, its characterized in that: the motor unit comprises a first motor capable of rotating spontaneously and operating independently, a second motor spaced from the first motor, a speed reducer connected with the second motor, and a clutch arranged between the first motor and the speed reducer.

2. The thread rolling machine according to claim 1, wherein: the rotation speed of the first motor is not lower than that of the second motor.

3. The thread rolling machine according to claim 1, wherein: the rotation speed of the first motor is 1750rpm, the rotation speed of the second motor is 1750rpm, and the reduction ratio of the speed reducer is 1: 30.

4. The thread rolling machine according to claim 1, wherein: the clutch is an electromagnetic clutch.