TW201513968A - Multi-frequency vibrating knife holder - Google Patents

Abstract

A multi-frequency vibrating knife holder mainly comprises a holder body, an expansion rod, a fixing base and a control unit. The holder body has a first end inserted on the processing spindle and a second end for connecting and fixing the expansion rod. The expansion rod has a first end provided with a plurality of piezoelectric sheets capable of performing the reverse piezoelectric effect and a second end connected and fixed to the processing knife. Upon an input voltage, the expansion rod generates a high frequency axial mechanical vibration. The fixing base is mounted at the peripheral side of the holder body using a plurality of bearings, such that the electrodes of the plurality of piezoelectric sheets of the expansion rod can be conducted to the outside and electrically connected with the control unit. The control unit is provided with a plurality of drivers having different electric field polarity variation frequencies, such that an operator can select the electric field polarity variation frequency required for transmission to the plurality of piezoelectric sheets, enabling the processing knife to perform various high frequency vibrating cutting operations, so as to meet the need of different cutting operations and effectively reduce the installation costs.

Description

Multi-frequency vibrating knife handle device

In particular, the present invention provides a multi-frequency vibrating blade device that can be processed by a variety of different high-frequency vibrations according to the needs of the operator to achieve various cutting operations and to effectively reduce the configuration cost.

According to the high-frequency vibrating knife, the polarity of the electric field is changed by the high-frequency electric field, so that the piezoelectric material generates high-frequency vibration due to the reverse piezoelectric effect, and the machining tool can be used for high-frequency vibration cutting operations beyond the sound frequency. Due to the high-frequency vibration of the machining tool, the cutting surface is continuously separated from the chip at a high frequency, and the cutting surface of the machining tool is in close contact with the chip, thereby effectively reducing the between the cutting tool and the chip in the conventional cutting mode. The friction coefficient significantly improves the adverse effects caused by high temperature and high pressure between the cutting chips and the cutting surface of the processing tool, and further provides cutting operations such as preventing chattering, reducing cutting resistance, reducing processing strain, effectively improving chip removal, and effectively improving the machining surface. effect.

Please refer to FIG. 1 , which is a novel patent of the "Rotary Vibration Machining Knife" No. 102200328 previously filed by the inventor. The rotary vibration machining blade mainly comprises a knife handle 10, a plurality of piezoelectric sheets 11, and a The joint rod 12, an insulating sleeve 13, two conductive bearings 14, 15 and a fixed outer casing 16, wherein the joint rod 12 is fixedly fixed to the handle 10, and a plurality of pressures are arranged at one end of the joint rod 12. The electric piece 11 is formed by arranging adjacent ends of the polar ends of the same polarity, and extending the second positive and negative electrode lines, so that the positive and negative electrodes of the piezoelectric piece 11 are in the processing tool. When rotating, the cutting operation can be conducted to the outside and electrically connected to the driver, and the two conductive bearings 1 are mounted on the fixed casing 16. 4, 15, and one of the electrode wires is connected to the conductive bearing 14, the other electrode wire is connected to the conductive bearing 15, and in order to prevent the positive and negative electrodes of the two conductive bearings 14, 15 from being short-circuited through the blade 10, An insulating sleeve 13 is disposed between the conductive bearings 14, 15 and the tool holder 10, so that the machining tool can perform high-frequency vibration cutting operations when the actuator is actuated. Due to different cutting operations, each has its own corresponding vibration frequency. Therefore, it is suitable to meet the processing quality of various cutting operations by providing appropriate corresponding vibration frequency. At present, the existing high-frequency vibration processing tool is a type of processing tool. A vibration frequency is used. For example, the three vibration frequency systems are respectively used for three different types of machining knives, and cannot be used with a single type of processing knives at the same time with a plurality of frequencies. The reason is that the high-frequency vibration processing knives (see the 1)), the waveform of various vibration frequencies must not only make the node position (the position with zero amplitude) at the fixed position of the connection between the tool holder 10 and the joint rod 12, so as to prevent the knife handle 10 from being affected by the high-frequency vibration of the joint rod 12, and The connection vibration is generated, and the maximum amplitude point of each vibration frequency must be located at the tool tip position of the machining tool to maximize the cutting benefit; however, due to the different waveforms of various vibration frequencies, the position of the node and the maximum amplitude point Not the same, and the change in the size of the joint rod 12 is also The position of the ringing node and the maximum amplitude point, so it is possible to use a variety of different vibration frequencies on a single joint rod 12 to meet the various cutting operations, which has many difficulties, and thus the current processing of high-frequency vibration. The knife handle can not be used with a variety of frequencies at the same time, resulting in more configuration costs for the use end.

In view of this, the inventor has been engaged in research and development and production experience of related industries for many years, and has conducted in-depth research on the problems currently faced. After long-term efforts and research, he has finally developed a kind of tool that can be used according to the operator. The processing tool can be used for a variety of different high-frequency vibration cutting to meet the needs of various cutting operations and effectively reduce the configuration cost, which is the design tenet of the present invention.

A first object of the present invention is to provide a multi-frequency vibrating knife handle device, which is mainly provided with an expansion rod coupled to a body of the knife holder, and the first end of the expansion rod is provided with a plurality of pressures capable of reversing the piezoelectric effect. The second end is connected to the fixed processing tool, and when the voltage is input, the expansion rod drives the processing tool to generate high-frequency axial mechanical vibration, and the electrodes of the plurality of piezoelectric sheets are electrically connected to the control unit, and the control is performed. The unit is provided with a plurality of drivers of different electric field polarity changing frequencies, so that the operator can select the required frequency of the electric field polarity change and transmit it to a plurality of piezoelectric sheets, so that the processing tool can perform a variety of different high frequency vibration cutting to achieve Meet the needs of a variety of different cutting operations and effectively reduce the cost of configuration.

A second object of the present invention is to provide a multi-frequency vibrating knife handle device, wherein the waveforms of the various vibration frequencies are such that at least one node position (a position having an amplitude of zero) is located at a fixed position of the body of the handle and the expansion rod to avoid The tool body is affected by the high-frequency vibration of the expansion rod, and the connection vibration is generated, and the maximum amplitude point position of the various vibration frequencies is located at the tool tip position of the machining tool to obtain the maximum cutting benefit.

Conventional part:

10‧‧‧Knife

11‧‧‧ Piezo Pieces

12‧‧‧Connector

13‧‧‧Insulation sleeve

14‧‧‧Electrical bearing

15‧‧‧conductive bearings

16‧‧‧Fixed casing

Part of the invention:

20‧‧‧Knife body

21‧‧‧ buckle ring

22‧‧‧ hollow room

23‧‧‧Spiral sleeve

24‧‧ ‧ retaining ring

30‧‧‧Expanding rod

31‧‧‧ Piezo Pieces

32‧‧‧Processing tools

33‧‧‧Electrical gasket

34‧‧‧Bolts

35‧‧‧Negative electrode

36‧‧‧ positive electrode

37‧‧‧ Fixed Department

40‧‧‧ Fixed seat

41‧‧‧First negative conductive bearing

42‧‧‧Actual conductive bearing

43‧‧‧Second negative conductive bearing

44‧‧‧Insulation sleeve

45‧‧‧Outer insulation sleeve

46‧‧‧ positive electrode lead

47‧‧‧First conductive bead

48‧‧‧Second conductive bead

49‧‧‧C type buckle

50‧‧‧Fixed ring

51‧‧‧甩水环

52‧‧‧fixed pin

53‧‧‧ positive electrode head

60‧‧‧Control unit

61‧‧‧ drive

62‧‧‧ drive

63‧‧‧ drive

P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14, P15‧‧‧ nodes

S1, S2, S3, S4, S5‧‧‧ maximum amplitude point

Fig. 1: Schematic diagram of a new patent case of "Rotary Vibration Machining Knife" No. 102200328.

Figure 2: Schematic diagram of the expansion rod of the present invention.

Figure 3-1: Schematic diagram of the waveform of the expansion rod of the present invention when inputting a vibration frequency of 20 kHz.

Figure 3-2: Schematic diagram of the waveform of the expansion rod of the present invention when inputting a vibration frequency of 40 kHz.

Figure 3-3: Schematic diagram of the waveform of the expansion rod of the present invention when inputting a vibration frequency of 60 kHz.

Figure 3-4: The waveform of the expansion rod of the present invention when inputting the vibration frequency of 80KHZ intention.

Figure 3-5: Schematic diagram of the waveform of the expansion rod of the present invention when inputting a vibration frequency of 100 kHz.

Figure 4: Assembly schematic of the present invention.

Figure 5: Schematic diagram of the control of the present invention.

In order to make the present invention more fully understood by the reviewing committee, a preferred embodiment and a drawing will be described in detail. As follows: Referring to FIG. 2, the first end of the expansion rod 30 of the present invention is provided. a plurality of piezoelectric sheets 31 which can be used for inverting the piezoelectric effect, and the second end is connected to the locking processing tool 32 by means of a screw lock. The plurality of piezoelectric sheets 31 are annular and have the same polarity end phase. The first end of the expansion rod 30 is locked by a conductive pad 33 and a bolt 34. In the embodiment, the first end of the expansion rod 30 is provided with four piezoelectric sheets 31. The piezoelectric sheets 31 are arranged adjacent to each other with the same polarity ends of "negative positive-negative-negative positive-positive-negative", and negative electrode sheets 35 are provided between the same negative ends of the respective piezoelectric sheets 31, the same A positive electrode sheet 36 is disposed between the positive poles, and each of the negative electrode sheets 35 has a negative electrode portion in series, and each positive electrode sheet 36 has a positive electrode portion connected in series to be connected to a control portion with a driver ( Further, the expansion rod 30 is provided with a fixing portion 37 for connection with the blade body (to be described later). In the embodiment, the fixing portion 37 is provided at an intermediate position (A) of the expansion rod 30.

Referring to FIG. 2, since the fixing portion 37 of the expansion rod 30 is fixedly coupled to the holder body, the position of the fixing portion 37 of the expansion rod 30 is preferably a node position (amplitude) of the vibration frequency waveform. In the position of zero, the knife body can be prevented from being affected by the high-frequency vibration of the expansion rod 30, and the connection vibration is generated. The position of the tool edge of the processing tool 32 of the expansion rod 30 is preferably a vibration frequency. The maximum amplitude point position of the waveform can be maximized. However, since the shape and size of the expansion rod 30 will affect the position of the node and the maximum amplitude point, the shape and size of the expansion rod 30 must be constant. Computer simulation analysis and correction are performed such that at least one node position of the input vibration frequency waveform is located at the position (A) of the fixed portion 37 of the expansion rod 30, and the maximum amplitude point position of the input vibration frequency waveform is located at the expansion rod 30. The tool nose position of the machining tool 32. After completing the computer simulation analysis and the modified expansion rod 30, when different vibration frequencies are input respectively, the following waveform diagram can be obtained by computer simulation analysis; see Figure 3-1, the vertical axis of the waveform diagram indicates the amplitude. The horizontal axis represents the length distance (L) of the first end of the expansion rod to the position of the cutting edge. In the present embodiment, when the vibration frequency of 20 KHz is input, the length distance from the first end of the expansion rod to the position of the cutting edge is once per vibration ( L) The inner system has 1/2 wavelength (1/2 λ), one node position P1 is located at the fixed portion of the intermediate position (A) of the expansion rod, and the second end maximum amplitude point position S1 is located at the cutting edge Position, that is, the conditions required for high-frequency vibration. Refer to Figure 3-2. When inputting the vibration frequency of 40KHZ, the length distance (L) of the first end of the expansion rod to the tip position is 2/2 wavelengths (2/2 λ). The two node positions P2 and P3 are not at the fixed portion of the intermediate position (A) of the expansion rod, and the second amplitude maximum amplitude point position S2 is located at the cutting edge position, but does not fully meet the conditions required for high frequency vibration. . Refer to Figure 3-3. When inputting the vibration frequency of 60KHZ, the length distance (L) of the first end of the expansion rod to the tip position is 3/2 wavelengths (3/2 λ). The node P5 of the three-node position P4, P5, P6 is located at the fixed portion of the intermediate position (A) of the expansion rod, and the maximum amplitude point position S3 of the second end is located at the position of the tool tip, that is, conforming to the high-frequency vibration Required conditions. Refer to Figure 3-4. When inputting the vibration frequency of 80KHZ, the length distance (L) of the first end of the expansion rod to the tip position is 4/2 wavelengths (4/2 λ). The four node positions P7, P8, P9, and P10 are not at the fixed portion of the intermediate position (A) of the expansion rod, and the second amplitude maximum amplitude point position S4 is located at the cutting edge position, but fails. Fully meet the conditions required for high frequency vibration. Refer to Figure 3-5. When inputting the vibration frequency of 100KHZ, the length distance (L) of the first end of the expansion rod to the tip position is 5/2 wavelengths (5/2 λ). The node P13 of the five-node position P11, P12, P13, P14, P15 is located at the fixed portion of the intermediate position (A) of the expansion rod, and the maximum amplitude point position S5 of the second end is located at the position of the cutting edge, that is, the height is met. The conditions required for frequency vibration. Therefore, it can be seen from Fig. 3-1 to Fig. 3-5 that when different vibration frequencies of 20 KHZ, 60 KHZ and 100 KHZ are respectively input, the conditions required for high frequency vibration on the same expansion rod are met.

Referring to FIG. 4, the multi-frequency vibrating knife handle device of the present invention has an expansion rod 30 coupled to a second end of the handle body 20, the first end of the handle body 20 being tapered and having a knife ring 21, The tool changer of the tool changer can be automatically inserted into the tool magazine or the machining spindle. This part is not the focus of the present invention, so the second end of the tool body 20 has a hollow capacity. The chamber 22 is disposed for the first end of the expansion rod 30 and is fixedly coupled. In the embodiment, the second end portion of the holder body 20 has an internal thread for locking the external thread of the screw sleeve 23 And the screw sleeve 23 abuts against the fixing portion 37 of the expansion rod 30, and the expansion rod 30 is coupled and fixed to the second end of the handle body 20, and the expansion rod 30 is driven to rotate at a high speed, so that the expansion rod 30 is rotated. The negative electrode portion and the positive electrode portion of the plurality of piezoelectric sheets 31 at the first end can be electrically connected to the outside under high-speed rotation. The present invention is provided with a fixed seat that is erected on the outer ring side of the handle body 20 by a plurality of bearing sets. 40, and the fixing base 40 is in a state of not rotating, in this embodiment, The retaining ring 24 is locked on the cutter body 20, and the first negative conductive bearing 41, the positive conductive bearing 42 and the second negative conductive bearing 43 are respectively disposed between the fixed seat 40 and the handle body 20, wherein the positive conductive bearing 42 is in the knife handle The main body 20 and the fixing base 40 are respectively provided with an inner insulating sleeve 44 and an outer insulating sleeve 45, and the second negative conductive bearing 43 is fastened to the handle body 20 by a C-shaped buckle 49; as can be understood from the second or fourth figure, Multiple piezoelectric sheets 3 The negative electrode portion of the first electrode is connected to the body of the expansion rod 30. Since the expansion rod 30 is coupled and fixed to the holder body 20, the holder body 20 is placed on the fixed seat by the first negative conductive bearing 41 and the second negative conductive bearing 43. 40. Therefore, the negative electrode portion of the plurality of piezoelectric sheets 31 can be electrically connected to the fixing base 40 in a non-rotating state via the expansion rod 30, the tool holder body 20, the first negative electrode conductive bearing 41, and the second negative electrode conductive bearing 43. The positive electrode portion of the plurality of piezoelectric sheets 31 penetrates the inner insulating sleeve 44 and the outer insulating sleeve 45 with the positive electrode lead wires 46, and is conducted to the outside through the positive conductive bearing 42. In this embodiment, the positive electrode lead 46 is provided on the side of the inner insulating sleeve 44 with a first conductive bead 47 elastically abutting the positive conductive bearing 42. The positive electrode lead 46 is provided on the outer insulating sleeve 45 side with a second conductive top bead 48 which elastically abuts the positive conductive bearing 42. The first conductive bead 47 and the second conductive bead 48 can be elastically resisted against the inner and outer sides of the positive conductive bearing 42 to have better electrical conduction contact; in order to avoid the coolant splashing during the cutting operation A negative conductive bearing 41 The positive conductive bearing 42 and the second negative conductive bearing 43 are locked with a fixing ring 50 at the end of the fixing base 40 for erecting a water ring 51. In addition, in order to avoid the rotation of the fixing base 40 due to the inertia of the high-speed rotation of the blade body 20, the fixing base 40 is provided with a fixing pin 52 which is telescopically inserted on the machine table, and the fixing pin 52 is insulated and provided with a fixing pin 52. The positive electrode tip 53 of the positive electrode lead 46 is connected, and the negative electrode portion of the plurality of piezoelectric sheets 31 is further conducted to the fixing pin 52 via the fixing base 40, so that the negative electrode portion of the plurality of piezoelectric sheets 31 is conducted to the fixing The pin 52 and the positive electrode portion are conducted to the positive electrode tip 53 to electrically connect the negative electrode portion and the positive electrode portion of the plurality of piezoelectric sheets 31 to the outside and electrically connected to the control unit.

Referring to FIG. 5 , the multi-frequency vibrating blade device of the present invention, the negative electrode portion and the positive electrode portion of the plurality of piezoelectric plates 31 can be electrically connected to a control unit 60 via the fixing pin 52 and the positive electrode head 53 . The control unit 60 is provided with a plurality of drivers of different electric field polarity changing frequencies. In this embodiment, the control unit 60 is The drivers 61, 62, and 63 having the polarity change frequency of the electric field of 20KHZ, 60KHZ, and 100KHZ have a minimum frequency of 20KHZ, 60KHZ, and 100KHZ electric field, and at least one node is located on the fixing portion 37 at the middle position of the expansion rod 30, and the maximum The amplitude point positions are collectively located at the tool tip position of the machining tool 32. Therefore, regardless of the frequency of the electric field polarity change of the input 20KHZ, 60KHZ or 100KHZ, the cutter body 20 can be prevented from being affected by the high frequency vibration of the expansion rod 30, and the vibration is generated. In this case, the machining tool 32 of the expansion rod 30 can also achieve the maximum cutting benefit, and the control unit 60 can be used by the operator to select the desired frequency of the electric field polarity change and transmit it to the plurality of piezoelectric sheets 31, so that the processing tool 32 can be matched. A variety of high-frequency vibration cutting is required to achieve the practical benefits of meeting various cutting operations and effectively reducing the configuration cost.

Accordingly, the present invention can be used for a variety of high-frequency vibration cutting on a single type of tool holder device, which not only meets the requirements of various cutting operations, but also effectively reduces the configuration cost of the use end, which is practical and practical. Progressive design, but did not see the same product and publications open, thus allowing the invention patent application requirements, 提出 apply in accordance with the law.

20‧‧‧Knife body

23‧‧‧Spiral sleeve

30‧‧‧Expanding rod

31‧‧‧ Piezo Pieces

32‧‧‧Processing tools

37‧‧‧ Fixed Department

40‧‧‧ Fixed seat

46‧‧‧ positive electrode lead

52‧‧‧fixed pin

53‧‧‧ positive electrode head

60‧‧‧Control unit

61‧‧‧ drive

62‧‧‧ drive

63‧‧‧ drive

Claims (10)

The utility model relates to a multi-frequency vibrating knife handle device, which mainly comprises: a cutter body; the expansion rod is provided with a fixing portion for connecting and fixing to the handle body, and the first end of the expansion rod is provided with a plurality of piezoelectric sheets, The plurality of piezoelectric sheets have a negative electrode portion and a positive electrode portion, and the second end of the expansion rod is coupled with a processing tool; and the control unit is a negative electrode portion and a positive electrode of the plurality of piezoelectric sheets electrically connected to the expansion rod The control unit is provided with a plurality of drivers of different electric field polarity changing frequencies, and the plurality of different electric field polarity changing frequencies have at least one node co-located on the fixed portion of the expansion rod, and at least one maximum amplitude point position is co-located The tool tip position of the tool. The multi-frequency vibrating knife handle device according to the first aspect of the invention, wherein the first end of the tool holder body is a tapered body and has a buckle ring for inserting on the machining spindle, the second body of the knife handle body The end has a hollow chamber for the first end of the expansion rod to be placed and fixed. The multi-frequency vibrating knife handle device according to claim 1, wherein the second end portion of the handle body has an internal thread for locking a threaded sleeve of the external thread, and the screw sleeve is abutted against the screw sleeve The fixing portion of the expansion rod connects and fixes the expansion rod to the second end of the handle body. The multi-frequency vibrating knife handle device according to claim 1, wherein the plurality of piezoelectric sheets at the first end of the expansion rod are arranged adjacent to each other with the same polarity end, and the piezoelectric sheets are the same A negative electrode sheet is disposed between the negative electrode ends, and positive electrode sheets are disposed between the same positive electrode ends, and the negative electrode sheets are connected in series to a negative electrode portion, and the positive electrode sheets are connected in series to a positive electrode portion. a multi-frequency vibrating knife handle device according to item 4 of the patent application scope, wherein the expansion The plurality of piezoelectric sheets at the first end of the rod are locked to the first end of the expansion rod by a conductive gasket and a bolt. The multi-frequency vibrating knife handle device according to the first aspect of the invention, wherein the fixing portion of the expansion rod is disposed at an intermediate position between the expansion rod and the machining tool. The multi-frequency vibrating knife handle device according to claim 1, further comprising a fixing seat provided on the outer ring side of the tool holder by a plurality of bearing sets, the plurality of bearing sets having at least one negative conducting bearing and a positive conducting The bearing electrically connects the negative electrode portion and the positive electrode portion of the plurality of piezoelectric sheets to the outside and is electrically connected to the control unit. The multi-frequency vibrating knife handle device according to claim 7, wherein the positive conductive bearing is provided with an inner insulating sleeve and an outer insulating sleeve between the cutter body and the fixed seat, and the negative electrode portions of the plurality of piezoelectric sheets are respectively Via the expansion rod, the cutter body and the negative conductive bearing, and conducting to the fixed seat, the positive electrode portions of the plurality of piezoelectric sheets respectively penetrate the inner insulating sleeve and the outer insulating sleeve with the positive electrode lead, and are electrically connected to the positive conductive bearing through the positive conductive lead external. According to the multi-frequency vibrating knife handle device of claim 8, wherein the positive electrode lead connected to the positive electrode portion of the plurality of piezoelectric sheets is provided on the inner insulating sleeve side with the elastic abutting positive conductive bearing A conductive bead, the positive electrode lead is provided on the outer insulating sleeve side with a second conductive bead that elastically abuts the positive conductive bearing, and is permeable to the outside through the positive conductive bearing. The multi-frequency vibrating knife handle device according to claim 8, wherein the fixing base is provided with a fixing pin, and the fixing pin is insulated and provided with a positive electrode head connecting the positive electrode wires, and a plurality of piezoelectric pieces. The negative electrode portion is conducted to the fixing pin by the fixing seat to electrically connect the negative electrode portion and the positive electrode portion of the plurality of piezoelectric sheets to the outside and electrically connected to the control unit.