CN101249620A - Rotating ultrasonic chief axis straight thread and conicity composite locating - Google Patents

Rotating ultrasonic chief axis straight thread and conicity composite locating Download PDF

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Publication number
CN101249620A
CN101249620A CNA2008100272053A CN200810027205A CN101249620A CN 101249620 A CN101249620 A CN 101249620A CN A2008100272053 A CNA2008100272053 A CN A2008100272053A CN 200810027205 A CN200810027205 A CN 200810027205A CN 101249620 A CN101249620 A CN 101249620A
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CN
China
Prior art keywords
straight thread
tapering
chief axis
tool heads
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2008100272053A
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Chinese (zh)
Inventor
唐勇军
张永俊
郭钟宁
刘晓宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CNA2008100272053A priority Critical patent/CN101249620A/en
Publication of CN101249620A publication Critical patent/CN101249620A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a rotating ultrasonic main shaft for the composite positioning of straight thread and taper, which comprises a transducer, an amplitude-modulated pole and a tool head. And the three parts are connected, and supported on an outer casing by a bearing, so that the rotation can be achieved. The main shaft is characterized in that the transducer and the tool head use the composite positioning method of straight thread and taper. The method can allow the ultrasonic vibration produced by a piezoelectric wafer to be transferred to the tool head, and avoids the vertical vibration to be transferred back to the bearing of the main shaft, and ensures high rigidity and good vibration resistance of the machine tool. The method can allow the entire ultrasonic main shaft to have compact structure and high rotating precision. When the rotating ultrasonic main shaft is used for carrying out ultrasonic grinding composite processing, the processing efficiency can reach 3 to 5 times of general grinding. Therefore, the main shaft greatly improves ultrasonic grinding processing performance, and is conducive to protecting the workpieces and the cutting tools.

Description

The rotating ultrasonic chief axis of a kind of straight thread and the compound location of tapering
Technical field
The present invention relates to ultrasonic chief axis, more particularly the present invention relates to a kind of rotating ultrasonic chief axis that is applied to the ultrasonic grinding Compound Machining.
Background technology
The ultrasonic grinding process technology is one of the process technology that is suitable for processing the tool potentiality of hard brittle material, and the new kind of hard brittle material is more and more, uses also more and more widely.And rotating ultrasonic chief axis is one of critical component of ultrasonic grinding machining tool, existing ultrasonic lathe generally all is additional simple and easy ultrasonic head on the main shaft of machine tool, defective such as it has that device is huge, low precision, rotating speed are low, and this mode can cause ultrasonic vibration to be back to lathe bed, machining accuracy is low, and workpiece quality is poor.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, the ultrasonic chief axis of a kind of compact, high accuracy, high rigidity, straight thread and the compound location of tapering is provided.
Purpose of the present invention realizes by following proposal.
The rotating ultrasonic chief axis of a kind of straight thread and the compound location of tapering, comprise transducer, luffing bar and tool heads, transducer is by the back match block, piezoelectric chip is connected by bolt with preceding match block, and transducer, the luffing bar be connected with tool heads and by bearings in outside put, can realize rotation at a high speed, its special character is between luffing bar and the tool heads by straight thread and the compound locate mode of tapering, the ultrasonic vibration that this mode can make piezoelectric chip produce is passed to tool heads, avoid simultaneously vibrating longitudinally and be back to main shaft bearing, and guarantee the high rigidity of lathe and good vibration resistance, and this mode can make whole ultrasonic main axle structure compactness, the running accuracy height.
The first end of described instrument plates wear-resisting, the high hardness material of attached one deck by modes such as plating, welding, as plates attached one deck diamond; The tool heads other end is that taper and straight thread are compound, and the tapering of the conical surface can adjust, and must guarantee that ultrasonic vibration can efficiently be passed to tool end.
Described luffing bar one end has inner conical surface and interior straight thread, and matches with the male cone (strobilus masculinus) of tool heads and outer straight thread, and good connection the between assurance tool heads and luffing bar, acoustic impedance is little.
Described back match block, piezoelectric chip are connected by bolt with preceding match block three parts, need insulation between bolt and the piezoelectric chip, and must avoid piezoelectric chip to bear torque, in order to avoid piezoelectric chip is produced destruction.
Described rotating part supports by metal (upper with outer inner room, to guarantee the running accuracy of whole ultrasonic main shaft.
The loading that described rotary ultrasonic oscillator drives the signal of telecommunication realizes that by non-dusting brush it can guarantee that ultrasonic chief axis drives the reliability of signal loading under high speed rotation situation.
The rotation of described whole ultrasonic main shaft drives by driving shaft, and driving shaft links to each other with motor by belt, synchronous band, elasticity shaft joint etc.
Operation principle of the present invention is as follows:
Transducer is under the driving of high-frequency ultrasonic signal, the supersonic frequency vibration is amplified by luffing bar, tool heads, and amplitude reaches 0.01~0.1mm, and workpiece is produced the high frequency intense impact, and ultrasonic chief axis is realized rotation at a high speed simultaneously, and workpiece is produced a kind of ultrasonic grinding complex machining process.The ultrasonic grinding Combined Machining Technology is to introduce ultrasonic vibration in grinding, and by the machined material on the effect removal workpiece of ultrasonic vibration, the grinding effect can be strengthened and improve to ultrasonic vibration.It mainly shows as: not only kept the characteristic of grinding, also can increase substantially working (machining) efficiency (process velocity reaches 3~5 times of plain grinding), reduced the deflection of smear metal, reduced cutting force, chip removal is unobstructed; Effectively improve simultaneously workpiece surface quality (workpiece surface finish can reach Ra<0.2 μ m); dynamics and thermic load are little; help protecting workpiece and cutter (cutter loss be reduced to plain grinding 1/2), cut down finished cost, it is very suitable for the processing of hard brittle material.
The invention has the beneficial effects as follows between luffing bar and the tool heads by straight thread and the compound locate mode of tapering, the ultrasonic vibration that makes piezoelectric chip produce is passed to tool heads, avoid simultaneously vibrating longitudinally and be back to main shaft bearing, and guarantee that the high rigidity of lathe and good vibration resistance, this mode can make whole ultrasonic main axle structure compactness, running accuracy height.Utilize this rotating ultrasonic chief axis to carry out the ultrasonic grinding Compound Machining, its working (machining) efficiency can reach 3~5 times of plain grinding, improves the ultrasonic grinding processing characteristics greatly, helps protecting workpiece and cutter.
Description of drawings:
Fig. 1 is the specific embodiment of the present invention schematic diagram.
Fig. 2 is first kind of specific embodiment schematic diagram of straight thread and the compound location of tapering between luffing bar of the present invention and tool heads.
Fig. 3 is second kind of specific embodiment schematic diagram of straight thread and the compound location of tapering between luffing bar of the present invention and tool heads.
Among the figure: 1-tool heads, 2,2 '-location tapering, 3,3 '-straight thread, 4-bearing, 5-piezoelectric chip, 6-screw, match block behind the 7-, 8-driving shaft, 9-loam cake, 10-bearing, 11-bolt, 12-brush, match block before the 13-overcoat, 14-, 15-luffing bar.
The specific embodiment
In the specific embodiment of the present invention shown in Figure 1, the rotating ultrasonic chief axis of this straight thread and the compound location of tapering, comprise transducer, luffing bar 15 and tool heads 1, transducer is made up of back match block 7, piezoelectric chip 5 and preceding match block 14 3 parts, and by bolt 11 connections, back match block 7 rear ends are connected with driving shaft 8, above each several part is formed a rotary body, motor is by belt, band or 8 rotations of elasticity shaft joint drive driving shaft synchronously, so that whole rotating part high speed rotating (3000-4000 rev/min); Whole rotating part is fixed on the overcoat 13 by two bearings 4,10, and whole main shaft is held by overcoat 13, realizes axial feed; Loam cake 9 limits whole rotating part axial location by screw 6; The driving signal of ultrasonic-frequency power supply is loaded on the ultrasonic vibrator by brush 12; 15 on tool heads 1 and luffing bar are connected with straight thread 3 by tapering 2, and this connected mode can make the ultrasonic chief axis compact conformation, the positioning accuracy height; Tool heads 1 one ends are attached diamond tool heads of method plating such as plating or electric welding.
Between luffing bar of the present invention shown in Figure 2 and tool heads in first kind of specific embodiment schematic diagram of straight thread and the compound location of tapering, be that location tapering 2 is following, connect straight thread 3 at last layout type, and this location tapering can be that part contacts, also can be whole contacts.
Between luffing bar of the present invention shown in Figure 3 and tool heads in second kind of specific embodiment schematic diagram of straight thread and the compound location of tapering, be that location tapering 2 ' is last, connect straight thread 3 ' under layout type, and this location tapering can be that part contacts equally, also can be whole contacts.
The present invention is that the rotating ultrasonic chief axis of straight thread and the compound location of tapering is not limited to the above-mentioned specific embodiment.

Claims (9)

1. the rotating ultrasonic chief axis of straight thread and the compound location of tapering, comprise transducer, luffing bar [15] and tool heads [1], wherein transducer by back match block [7], piezoelectric chip [5] is connected by bolt [11] with preceding match block [14] and pass through bearing [4,10] is connected with overcoat [13], the preceding match block [14] of transducer connects luffing bar [15], and the back match block [7] of transducer connects driving shaft [8]; It is characterized in that: be connected with straight thread [3] by tapering [2] between tool heads [1] and luffing bar [15].
2. the rotating ultrasonic chief axis of straight thread according to claim 1 and the compound location of tapering is characterized in that above-mentioned tool heads [1] one end plates wear-resisting, the high hardness material of attached one deck, as diamond; Tool heads [1] other end is taper and straight thread composite construction.
3. the rotating ultrasonic chief axis of straight thread according to claim 1 and the compound location of tapering, it is characterized in that described luffing bar [15] one ends connect preceding match block [14], the other end has inner conical surface and interior straight thread, and matches with the male cone (strobilus masculinus) of tool heads [1] and outer straight thread.
4. according to the rotating ultrasonic chief axis of claim 1 or 2 or 3 described straight threads and the compound location of tapering, it is characterized in that straight thread [3] is connected between above-mentioned tool heads [1] and luffing bar [15], tapering [2] is positioned at down; Be the top of straight thread [3] in tool heads [1].
5. according to the rotating ultrasonic chief axis of claim 1 or 2 or 3 described straight threads and the compound location of tapering, it is characterized in that straight thread [3 '] is connected down between above-mentioned tool heads [1] and luffing bar [15], tapering [2 '] is positioned at; Be the top of tapering [2 '] in tool heads [1].
6. the rotating ultrasonic chief axis of straight thread according to claim 1 and the compound location of tapering is characterized in that loam cake [9] is installed in overcoat [13] upper end by screw [6].
7. the rotating ultrasonic chief axis of straight thread according to claim 1 and the compound location of tapering, it is inboard and contact with piezoelectric chip [5] to it is characterized in that brush [12] is installed in overcoat [13].
8. the rotating ultrasonic chief axis of straight thread according to claim 1 and the compound location of tapering, it is characterized in that above-mentioned driving shaft [8] by belt, synchronously the band or the elasticity shaft joint link to each other with motor.
9. the rotating ultrasonic chief axis of straight thread according to claim 1 and the compound location of tapering is characterized in that insulation between above-mentioned bolt [11] and the piezoelectric chip [5].
CNA2008100272053A 2008-04-03 2008-04-03 Rotating ultrasonic chief axis straight thread and conicity composite locating Pending CN101249620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2008100272053A CN101249620A (en) 2008-04-03 2008-04-03 Rotating ultrasonic chief axis straight thread and conicity composite locating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2008100272053A CN101249620A (en) 2008-04-03 2008-04-03 Rotating ultrasonic chief axis straight thread and conicity composite locating

Publications (1)

Publication Number Publication Date
CN101249620A true CN101249620A (en) 2008-08-27

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CNA2008100272053A Pending CN101249620A (en) 2008-04-03 2008-04-03 Rotating ultrasonic chief axis straight thread and conicity composite locating

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101179A (en) * 2010-10-28 2011-06-22 广东工业大学 Rotary ultrasonic main shaft
CN104842182A (en) * 2015-05-28 2015-08-19 天津大学 Novel supersonic machining tool chuck
CN105642925A (en) * 2016-04-07 2016-06-08 大连理工大学 Ultrasonic cutter
WO2020093418A1 (en) * 2018-11-05 2020-05-14 清华大学 Shrink-fit giant magnetostrictive ultrasonic tool holder
CN111906601A (en) * 2020-08-24 2020-11-10 钟健辉 Ultrasonic grinding and polishing system and method for rotor wing frame of unmanned aerial vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101179A (en) * 2010-10-28 2011-06-22 广东工业大学 Rotary ultrasonic main shaft
CN102101179B (en) * 2010-10-28 2012-12-19 广东工业大学 Rotary ultrasonic main shaft
CN104842182A (en) * 2015-05-28 2015-08-19 天津大学 Novel supersonic machining tool chuck
CN105642925A (en) * 2016-04-07 2016-06-08 大连理工大学 Ultrasonic cutter
WO2020093418A1 (en) * 2018-11-05 2020-05-14 清华大学 Shrink-fit giant magnetostrictive ultrasonic tool holder
CN111906601A (en) * 2020-08-24 2020-11-10 钟健辉 Ultrasonic grinding and polishing system and method for rotor wing frame of unmanned aerial vehicle

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Open date: 20080827