TW202330156A - Processing device by eliminating components and requirements for compensation correction to achieve intelligent, cordless, and direct-driven ultrasonic tool holder - Google Patents

Abstract

The present invention discloses a processing device, which comprises a spindle mechanism, a tool shank inserted into the spindle mechanism, an ultrasound vibrator unit cascaded below the tool shank, a secondary conical coil unit disposed on the outer periphery of the tool shank, and a primary conical coil unit matched with the secondary conical coil unit and disposed at a predetermined position of the spindle mechanism, and an ultrasound controller electrically connected to the secondary conical coil unit. By the composition of the aforementioned members, the electric power may be transmitted to the ultrasound controller through the primary and secondary conical coil units in a non-contact manner, and, after conversion, may control and drive the tool on the ultrasound vibrator unit to vibrate for processing. Since there is no defect of transmission distortion, the present invention may eliminate the components and requirements for compensation correction to achieve an intelligent, cordless, and direct-driven ultrasound tool holder.

Description

Processing device

The present invention relates to a technical field related to a processing machine tool, in particular to a processing device.

Ultrasonic processing technology has a high-frequency micro-vibration processing device, and the vibration generated by the piezoelectric element of the ultrasonic vibrator can be transmitted to the tool combined with the end, so that the tool can also process micro-vibration during high-speed rotating cutting Compared with traditional processing tools, ultrasonic processing technology has the advantages of improving processing efficiency for high hardness, viscous or brittle materials, reducing tool sticking chips, prolonging tool life, and making workpieces with higher precision and smooth surface. Among them, the use of non-contact wireless energy transmission is the trend of high-speed rotary vibration processing devices.

In the prior art, the main structure of the wireless transmission ultrasonic processing device, please refer to FIG. 94 , a compensation matching unit 95 , and a vibrator unit 96 . Wherein, the power input unit P, the control unit 91 and the drive unit 92 are often integrated into an ultrasonic controller module 90 .

According to the relevant settings, the control unit 91 makes the drive unit 92 obtain power from the power input unit P to convert the output according to the setting, and transmit the potential to the compensation matching unit 95 through the primary and secondary side coils 93 and 94 to compensate and correct according to the demand. Then output the driving vibrator unit 96 to act.

The actuation mode in the above structure is that the control unit 91 triggers the actuation of the drive unit 92, and after the power is obtained from the power input unit P and converted into an ideal value, it is transmitted to the vibrator unit 96 through the primary and secondary side coils 93 and 94 to make it action. However, the transmission of the primary and secondary side coils 93 and 94 will inevitably form a deviation, so the compensation and matching unit 95 is connected in series to correct it. This kind of action and structure has the following defects:

1. Ineffective and redundant computation: The control unit 91 needs to calculate the ideal data to make the drive unit 92 actuate, but the power data to the vibrator unit 96 cannot obtain the ideal value (invalid calculation) due to transmission loss. Therefore, after the power data received by the secondary side coil 94 is corrected (redundant calculations) through the compensation matching unit 95, the vibrator unit 96 can obtain power data close to the ideal value for operation.

2. Transmission loss: The control unit 91 needs to calculate the ideal data to make the drive unit 92 actuate, and transmit the inverse loss through the primary and secondary side coils 93 and 94. It is not as good as the primary side coil 93 directly transmitting the unadjusted power signal or relatively The expected power data, the efficiency of its wireless transmission must be better.

3. Component cost and occupied space: The existence of the compensation matching unit 95, in addition to the components and processing costs, also occupies the space, and the overall energy consumption is also a problem in the industry.

In addition to the above-mentioned deficiencies, there are many defects in the known technology using the bearing contact ultrasonic processing device. For example, the conductive structure is relatively large, and because the contact type is used as the electric energy conduction, although it has a better electromagnetic transmission effect, it is easy to produce Heat, discharge, wear, excessive inertia, etc. lead to problems such as instability and speed limitation during energy transmission, which in turn affects machining accuracy.

In the prior art, non-contact power transmission devices usually use ceramic materials, and the magnetic core is formed by die-casting as a conductor of electromagnetic induction. The cracking of the ceramic material reduces and invalidates the power transmission efficiency.

In the previous technology, the non-contact power transmission device was installed on the tool handle of the high-speed rotating spindle when the secondary side coil was assembled. Due to the rotational inertia of the tool handle, it is easy to cause the spindle to increase the load and be affected by the large rotational inertia. The knife handle swings, which makes the radial relative position of the secondary side coil change greatly, resulting in unstable power transmission efficiency. Compared with the configuration direction of the secondary side coil: radial direction < oblique direction (invention) < axial direction .

In view of the above-mentioned problems and deficiencies in the prior art, the main purpose of the present invention is to provide a processing device that eliminates the deficiencies in the prior art through structural design.

According to the above purpose of the present invention, a processing device is proposed, which includes a main shaft mechanism, a tool handle inserted into the main shaft mechanism, an ultrasonic vibrator unit connected in series under the tool handle, and a secondary The side conical coil unit, the primary side conical coil unit matched with the secondary side conical coil unit arranged at the preset position of the spindle mechanism, and an ultrasonic controller electrically connected to the secondary side conical coil unit. With the composition of the above components, through the primary and secondary side conical coil units, the power is transmitted to the ultrasonic controller in a non-contact manner, and then converted to control and drive the vibration of the tool on the ultrasonic vibrator unit for processing. The lack of transmission distortion eliminates the components and requirements for compensation and correction, and achieves an intelligent wireless direct-drive ultrasonic knife handle.

<this invention>

10: Spindle mechanism

12: Spindle joint

14: Fixture unit

20: handle

22: Joint on the handle

24: Joint in the handle

26: The lower joint of the handle

28: Coolant flow channel

30:Ultrasonic vibrator unit

31: Knife seat

32: Piezoelectric element

33: Collet nut

34: collet

35: Knife

40:Secondary side conical coil unit

42:Secondary side coil conical seat

422: Tapered exterior

424: Groove on the tapered seat of the secondary side coil

426: Groove under the tapered seat of the secondary side coil

44:Secondary side conical coil

50: primary side conical coil unit

52, 52': Conical seat of the primary side coil

522, 522': the groove on the conical seat of the primary side coil

54, 54': primary side conical coil

60: Ultrasonic controller

62: Drive unit

64: Control unit

P: Power input unit

<Previous Art>

91: Control unit

92:Drive unit

93: Primary side coil

94:Secondary side coil

95: Compensation matching unit

96: Vibration subunit

90:Ultrasonic controller module

[Fig. 1] is a schematic sectional view of an embodiment of the present invention.

[Fig. 2] is the schematic diagram (one) of the partial components of the embodiment shown in Fig. 1.

[Fig. 3] is the schematic diagram (two) of the partial components of the embodiment shown in Fig. 1.

[Fig. 4] is another perspective view of the embodiment shown in Fig. 3.

[Fig. 5] is a schematic cross-sectional view of another embodiment of the primary-side conical coil unit of the present invention.

[Fig. 6] is a schematic diagram of another viewing angle of the embodiment shown in Fig. 5.

[Fig. 7] is a schematic block diagram of a partial component of the embodiment of the present invention.

〔Fig. 8〕 is the schematic block diagram of the local components of the prior art.

Hereinafter, please refer to the relevant drawings to further describe the embodiment of the processing device of the present invention. In order to facilitate the understanding of the embodiments of the present invention, the same components are described below with the same symbols. Various objects in the embodiments are drawn according to the proportions, sizes, deformations or displacements applicable to the description, rather than drawn according to the scale of the actual components, and are described first. And the elements with the same and symmetrical configurations in the remaining embodiments are denoted by the same numbers. In addition, directional terms such as "front, back, left, right, up, down, inside, outside" in the descriptions of the embodiments listed below are expressed in accordance with the specified viewing directions and cannot be interpreted as limitations of the present invention.

Please refer to shown in Figures 1 to 4, which disclose a preferred embodiment of the present invention, which includes: a spindle mechanism 10, a handle 20, an ultrasonic vibrator unit 30, a secondary side conical coil unit 40, a The power input unit P, a primary conical coil unit 50 , and an ultrasonic controller 60 .

A spindle mechanism 10 (prior art) has a spindle joint 12 connecting the inside and outside of the spindle mechanism 10 , and a clamp unit 14 accommodated in the spindle joint 12 .

A handle of a knife 20 has a joint portion 22 on a handle of a knife, a joint portion 24 in a handle of a knife and a joint portion 26 under a handle of a knife from top to bottom; Wherein, the joint portion on the handle of a knife 22 is matched with the main shaft joint part 12 and selectively inserted, and is clamped by the clamp unit 14 of the main shaft mechanism 10 . The specifications of the tool handle 20 during implementation can be, for example: BT, BBT, CAT, DIN, ISO, HSK, KM or customized, etc. There is no limit to its specifications, and it is not limited to the shape drawn in the diagram.

The above-mentioned ultrasonic vibrator unit 30 has a knife seat 31 locked on the lower joint part 26 of the knife handle, a piezoelectric element 32 arranged on the knife seat 31, and a collet nut 33 screwed to the knife seat 31. Collet 34, a cutter 35 inserted in the collet 34. During implementation, the specification of the cutting tool 35 can be selected from ER, HF, NR, ARH, HC, or customized without limitation, and is not limited to the shape drawn in the figure. In addition, the piezoelectric element 32 can be selected from actuators such as ceramic piezoelectric actuators, voice coil actuators, and magnetic actuators.

The above-mentioned secondary-side conical coil unit 40 is locked on the joint portion 24 of the handle, and includes a secondary-side conical coil seat 42 and a secondary-side conical coil 44 .

The secondary side coil taper seat 42 is ring-shaped and is sheathed on the outer peripheral side of the joint part 24 in the handle, and has a tapered outer surface 422 on the upper end surface and a secondary side coil cone on the upper and lower sides. The upper groove 424 of the shaped seat and the lower groove 426 of the secondary side coil tapered seat; wherein, the upper groove 424 of the secondary side coil tapered seat provides the accommodation of the secondary side tapered coil 44 and coordinates with the adhesive for positioning.

The above-mentioned power input unit P, as shown in FIG. 7 , is electrically connected to the primary side conical coil 54 to provide a predetermined power. In practice, the power input unit P further includes a rectification circuit (not shown in the figure, prior art) and a filter circuit (not shown in the figure, prior art) to rectify and filter the power.

The above-mentioned primary-side conical coil unit 50 is locked at a preset position of the spindle mechanism 10 and includes a primary-side conical coil seat 52 and a primary-side conical coil 54 .

The primary side coil conical seat 52 maintains a predetermined gap with the secondary side coil conical seat 42, and the primary side coil conical seat 52 has a primary side coil conical seat 52 corresponding to the groove 424 on the secondary side coil conical seat. The groove 522 on the conical seat of the side coil is provided for accommodating the conical coil 54 of the primary side and cooperating with the adhesive to fix the position.

During implementation, please refer to shown in Figures 3 to 6, the conical coil 54 on the primary side can be used for automatic tool change equipment when the groove 522 on the conical seat of the primary side coil adopts a non-full conical design. Please refer to Figs. 5 and 6, the groove 522' on the primary side coil conical seat 52' can also be designed as a full conical shape, so that the primary side conical coil 54' along the primary side coil cone The groove 522' on the seat is concentrically arranged in a full conical shape. Through adopting the full conical design, it can improve the transmission efficiency compared with partial conical, and can be used in semi-automatic tool changing equipment.

The above-mentioned ultrasonic controller 60 is arranged in the groove 426 under the tapered seat of the secondary side coil, and includes a driving unit 62 and a control unit 64 .

The driving unit 62 is electrically connected to the secondary side conical coil 44 and the piezoelectric element 32 of the ultrasonic vibrator unit 30, and operates according to a driving signal to receive the voltage (current) of the secondary side conical coil 44 power. modulation, and output the modulation power of the preset frequency to the piezoelectric element 32, so that the piezoelectric element 32 is actuated. At the same time, it also senses the change (voltage, current) of the output modulated power at the load end, and outputs a sensing signal in response.

The control unit 64 is electrically connected to the secondary conical coil 44 and the driving unit 62 respectively, and is triggered by the user to output the driving signal, and adjusts the content of the output driving signal according to the sensing signal.

Therefore, the above is an introduction to the components and assembly methods of a preferred embodiment of the processing device provided by the present invention, and the operating features of the embodiment of the present invention are introduced as follows.

The control unit 64 outputs a drive signal to the drive unit 62 to make it operate After the power is obtained from the secondary conical coil 44, the power frequency is adjusted according to the driving signal, and then output to the piezoelectric element 32 to drive it to move.

At the same time, it also senses the change of the output modulation power at the load end (voltage, current), and responds to the output sensing signal to the control unit 64, so that the control unit 64 adjusts the drive output to the drive unit 62 according to the change of voltage and current. Signal content; for example, changing the drive unit 62 to modulate the frequency of the power output to the piezoelectric element 32 .

The control unit 64 instructs the drive unit 62 to change the frequency of the power output to the piezoelectric element 32 through different driving signals to find the frequency of the resonance point with the piezoelectric element 32 and lock it (frequency lock). Ensure high-efficiency wireless power transmission without being affected by component impedance matching errors, and achieve the highest power transmission efficiency, the most stable resonance frequency and amplitude, and the lowest power transmission temperature.

In addition, the control unit 64 performs power feedback control according to whether the frequency is locked or not, and the sensing signal (voltage, current) fed back by the drive unit 62 to maintain a constant vibration of the ultrasonic vibrator unit 30 .

The present invention uses the non-contact power transmission composed of the conical primary side conical coil unit 50 and the secondary side conical coil unit 40. In addition to facilitating tool handle 20 to clamp ultrasonic vibrator unit 30 and tool 35 for tool changing, It can also be used without speed limitation.

And the non-contact power transmission composed of the primary side conical coil unit 50 and the secondary side conical coil unit 40 is only for simple power transmission, rather than the variable power for driving the piezoelectric element 32 to be transmitted in the prior art, so it can The power loss is reduced by designing the power supply with the best transmission efficiency in the primary conical coil unit 50 .

Because the fluctuating electric power driving the ultrasonic vibrator unit 30 is obtained by the ultrasonic controller 60 from the electric power of the secondary side conical coil 44, the driving unit 62 converts it into modulated electric power with a pre-set frequency and outputs it to the driving ultrasonic wave. Vibrator unit 30 makes the piezoelectric element 32 actuate, so there will be no hysteresis, loss or distortion, so there is no need for compensation design, thereby simplifying the components and reducing the energy consumption required for compensation.

When the present invention is implemented, the tool handle 20 and the ultrasonic vibrator unit 30 can be further provided with a communicating coolant flow channel 28, which provides the coolant to flow through the piezoelectric element 32 for cooling, and can be sprayed out in conjunction with the structure of the tool 35 as a cutting fluid. (prior art).

The expected effects that the present invention can achieve include:

1. With a single set of coupling coils for innovative wireless power transmission, power and data can be sent to the ultrasonic vibrator unit 30 in the tool handle 20 to control and drive the piezoelectric element 32 at the same time.

2. The ultrasonic controller 60 (drive unit 62 and control unit 64 ) is designed in the handle 20 (secondary side coil tapered seat 42 ), which can directly control the piezoelectric element 32 .

3. The control unit 64 cooperates with the drive unit 62 to automatically adjust the frequency of the power output to the piezoelectric element 32, and can automatically lock the frequency at the resonance point to ensure high-efficiency wireless power transmission, which is not affected by the impedance matching error of the element, so as to achieve Highest transmission efficiency, most stable resonance frequency and amplitude, and lowest transmission temperature.

4. The control unit 64 cooperates with the drive unit 62 to further perform power feedback control according to whether the frequency is locked to the resonance point frequency, so as to maintain a constant vibration amount of the ultrasonic vibrator unit 30 .

The above description is only a preferred embodiment of the present invention, and is intended to clarify the characteristics of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Those of ordinary skill in the art will make equivalent changes according to the present invention. , and changes well known to those skilled in the art should still fall within the scope of the present invention.

30:Ultrasonic vibrator unit

44:Secondary side conical coil

54: primary side conical coil

60: Ultrasonic controller

62: Drive unit

64: Control unit

P: Power input unit

Claims (6)

A processing device comprising: A spindle mechanism with at least one clamp unit; A knife handle, from top to bottom, has an upper joint part of the knife handle, a middle joint part of the knife handle, and a lower joint part of the knife handle; wherein, the upper joint part of the knife handle is selectively inserted and clamped by the clamp unit; An ultrasonic vibrator unit, which has a knife seat locked on the lower joint of the knife handle, a piezoelectric element on the knife seat, a collet screwed with a collet nut and the knife seat, a tool inserted into the collet; A secondary-side conical coil unit, which is locked at the joint part of the handle, includes; A secondary side coil tapered seat has an upper and lower groove on the secondary side coil tapered seat and a lower groove on the secondary side coil tapered seat, and the secondary side coil tapered seat is an annular profile with a tapered exterior towards the upper end; and A secondary-side conical coil is accommodated in a groove on the conical seat of the secondary-side coil; a power input unit for providing a preset power; A primary side conical coil unit is locked at the preset position of the main shaft mechanism, including; A conical seat for the primary coil, maintaining a preset gap with the conical seat for the secondary coil, having a groove on the conical seat for the primary coil corresponding to the groove on the conical seat for the secondary coil; and The primary side conical coil is accommodated in the groove on the primary side coil conical seat; and An ultrasonic controller is arranged in the groove under the tapered seat of the secondary side coil, including: A driving unit is electrically connected with the secondary-side conical coil and the piezoelectric element, operates according to a driving signal, obtains power from the secondary-side conical coil for preset adjustment, and outputs a modulated power to the piezoelectric element. electrical components; and A control unit is electrically connected with the secondary conical coil and the drive unit respectively, and is triggered to output the drive signal. The processing device as described in claim 1, wherein the drive unit senses the change (voltage, current) of the output modulated power at the load end, and then outputs a sensing signal to the control unit in response; the control unit responds according to the sensed The test signal is adjusted to output the content of the driving signal. The processing device according to claim 1, wherein the primary side conical coil is selected from a full conical shape or a partial conical shape, and is accommodated in a groove on the primary side coil conical seat. The processing device as described in claim 1, wherein the specification of the tool holder is selected from one of BT, BBT, CAT, DIN, ISO, HSK, KM or customized ones. The processing device as described in Claim 1, wherein the specification of the tool is selected from one of ER, HF, NR, ARH, HC or customized. The processing device as described in claim 1, wherein the tool handle and the ultrasonic vibrator unit can further be provided with a communicating coolant channel.

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