CN111618669A - Ultrasonic machining tool holder - Google Patents
Ultrasonic machining tool holder Download PDFInfo
- Publication number
- CN111618669A CN111618669A CN201910146898.6A CN201910146898A CN111618669A CN 111618669 A CN111618669 A CN 111618669A CN 201910146898 A CN201910146898 A CN 201910146898A CN 111618669 A CN111618669 A CN 111618669A
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- CN
- China
- Prior art keywords
- tool
- tool holder
- ultrasonic
- tool mounting
- spindle
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B45/00—Means for securing grinding wheels on rotary arbors
- B24B45/003—Accessories therefor
Abstract
The present invention provides an ultrasonic machining tool holder for use with a machining machine that is powered by a spindle, comprising: a shank received in the spindle, the shank having a conductive disc disposed thereon for electrical connection with the spindle; a tool mounting portion including an axially extending tool mounting aperture capable of receiving and securing a portion of a tool; and an ultrasonic vibration unit fixedly disposed in the tool mounting portion, capable of receiving power and generating a high frequency vibration, which is transmitted to the tool through the tool mounting aperture.
Description
Technical Field
The present invention relates to a tool holder, and more particularly, to a tool holder for ultrasonic machining.
Background
In a conventional Ultrasonic Machining (USM), an Ultrasonic vibration unit is mounted on a rotary spindle, so that high-frequency vibration generated by Ultrasonic waves is transmitted to a tool through a tool holder, so that the tool has functions of high-speed rotation and Ultrasonic high-frequency vibration, and can be used for various grinding or cutting processes, especially for precision Machining of hard and brittle materials.
When an ultrasonic machining tool is used for machining, the cutting surface of the tool continuously vibrates in high frequency and is separated from the cutting chips, so that the adverse effects caused by high temperature and high pressure between the cutting chips and the cutting surface of the machining tool are obviously improved, and further, the cutting operation effects of preventing chatter marks, reducing cutting resistance, reducing machining strain, effectively improving chip removal, effectively improving the machined surface and the like are provided.
When the ultrasonic machining machine is working, the vibration source is generated by the ultrasonic vibration unit and transmitted to the tool blade tip through the tool holder, so that the ultrasonic high-frequency vibration machining operation is performed on a workpiece. During the ultrasonic machining operation, besides the ultrasonic high-frequency vibration, various parts of the ultrasonic machining machine are contacted with each other to work, and unexpected vibration is inevitably generated; the unexpected vibration and the ultrasonic high-frequency vibration interfere with each other, which affects the processing process and adversely affects the product precision.
Elongated tool holders of extended length, or combined attachment tool holders such as disclosed in U.S. patent nos. 1502528, 2716030, and 8821084, are often affected by the material rigidity and precision of the tool holder when using high slenderness ratio (L/D), resulting in poor or no machining quality, which is a bottleneck faced by current machines; or when the tool holder is applied to an ultrasonic processing machine, the situation in which the ultrasonic vibration interferes with the unexpected vibration is further aggravated due to the lengthened transmission path of the ultrasonic high-frequency vibration source, the tool holder is affected by the ultrasonic high-frequency vibration to generate the coupling vibration, and the position of the maximum amplitude point of various vibration frequencies is more difficult to control at the position of the cutting edge of the tool, resulting in undesirable cutting performance such as poor surface finish of the workpiece and the processed workpiece exceeding the tolerance range; which in turn causes wear to the machine and to the tools and, in the worst case, results in irreparable damage.
Disclosure of Invention
The present invention is directed to an ultrasonic machining tool holder which can effectively shorten a transmission path of an ultrasonic high-frequency vibration source, prevent the tool holder from generating unexpected coupling vibration due to the influence of the ultrasonic high-frequency vibration, and maintain excellent workpiece surface smoothness and machining precision.
It is a further object of the present invention to provide an ultrasonic machining tool holder which can improve the problems of the tool holder in which the rigidity is decreased and the deflection is increased due to the increase in length, and overcome the problem of insufficient rigidity of the tool holder having a high aspect ratio, and can shorten the aspect ratio, as shown in fig. 3, from L1/D, in which the ultrasonic vibrator is not provided, to L/D, in which the ultrasonic vibrator is provided in the present invention, while the length of the tool holder can be continuously increased, and the aspect ratio is maintained at a constant value of L/D, without being limited to the length of L1.
It is a further object of the present invention to provide an ultrasonic machining tool holder particularly suited for use in a variety of different elongated length tool holders or modular joint tool holders.
The above objects are achieved in an ultrasonic machining tool holder for use with a machine that provides a source of electrical power through a spindle, the tool holder comprising: a shank received in the spindle, the shank having a conductive disc disposed thereon, the conductive disc being in electrical communication with the spindle for conducting the power source to the tool holder; a tool mounting portion including an axially extending tool mounting aperture capable of receiving and retaining a portion of a tool; and the ultrasonic vibration unit is fixedly arranged in the tool mounting part, is electrically connected to the conductive disc, can receive the power supply and generate high-frequency vibration, and the high-frequency vibration is transmitted to the tool through the tool mounting part.
In a preferred embodiment of the present invention, the tool mounting portion further includes: the tool mounting hole is formed in the elastic chuck, a plurality of axial grooves which are parallel to each other and have one open end are formed on the elastic chuck, and a plurality of elastic claw pieces are formed among the axial grooves; and when the locking piece is locked, the locking piece applies force to the plurality of elastic claw sheets to enable the elastic claw sheets to elastically deform, and then the tool arranged in the elastic chuck is clamped inwards.
In a preferred embodiment of the present invention, the handle and the tool mounting portion are provided with cable guiding holes communicating with each other, and the conductive plate is electrically connected to the ultrasonic vibration unit through a cable passing through the cable guiding hole.
In a preferred embodiment of the present invention, the tool mounting device further comprises at least one extension sleeve module connected in series between the handle portion and the tool mounting portion.
In a preferred embodiment of the present invention, the extension sleeve module has a male connector end and a female connector end, so that the extension sleeve modules can be connected end to end in series.
The ultrasonic machining tool holder provided by the invention has the advantages that the ultrasonic vibration unit is arranged on the tool mounting part for fixing the tool, the transmission path of an ultrasonic high-frequency vibration source can be effectively shortened, the tool holder is prevented from generating unexpected connection vibration due to the influence of the ultrasonic high-frequency vibration, meanwhile, the problem of insufficient rigidity which cannot be solved by the tool holder with high slenderness ratio during machining is solved, and the better surface smoothness and machining precision of a workpiece are maintained. Particularly an elongated tool holder or a modular tool holder, of extended length, particularly suitable for use with the ultrasonic machining tool holder of the present invention.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of an ultrasonic machining tool holder in accordance with the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
figure 3 is a cross-sectional view of a second embodiment of the ultrasonic machining tool holder.
Detailed Description
Referring to both figures 1 and 2, the present invention provides an ultrasonic machining tool holder for use with a machining tool having a power source provided by a spindle (not shown), the tool holder comprising: a handle 10 received in the spindle, the handle 10 having a conductive plate 11 disposed thereon, the conductive plate 11 being electrically connected to the spindle for conducting the power to the conductive plate 11; a tool mounting portion 20 including an axially extending tool mounting aperture 21, the tool mounting aperture 21 being capable of receiving and retaining a portion (e.g., a tool shank) of a tool (not shown); and an ultrasonic vibration unit 30 fixed in the tool mounting portion 20, the ultrasonic vibration unit 30 being electrically connected to the conductive plate 11 and being capable of receiving the power and generating a high frequency vibration, the high frequency vibration being transmitted to the tool through the tool mounting aperture 21. The above configuration can effectively shorten the transmission path of the ultrasonic high-frequency vibration source.
The shank 10 has a tapered outer surface 15 configured to be received in a spindle of a working machine such that the tool holder and spindle are aligned and axially secured to one another. And the exterior configuration of the handle 10 is configured to allow the tool holder to be used in an automated tool change system.
The tool mounting portion 20 can be a cylindrical member, and further comprises a collet 22, the collet 22 defines the tool mounting aperture 21 therein, the collet 22 defines a plurality of axial slots 23 parallel to each other and open at one end, and a plurality of resilient fingers 24 are formed between the axial slots 23; and a locking member 25 is provided on the outside of the collet 22, and when the locking member 25 is locked, the plurality of resilient fingers 24 are elastically deformed by applying a force, thereby inwardly clamping the tool mounted in the collet 22. The manner in which the tool is secured by the collet 22 is not intended to be exhaustive, and those skilled in the art will appreciate that other means of securing the tool may be used.
In a preferred embodiment of the present invention, wherein the handle portion 10 and the tool mounting portion 20 are provided with cable guiding holes 12 communicating with each other, the conductive plate 11 is electrically connected to the ultrasonic vibration unit 30 through a cable 13 passing through the cable guiding hole 12. The conductive disc 11 and the spindle of the processing machine may be connected by non-contact conductive connection, such as by electromagnetic induction; of course, the conductive plate 11 and the spindle of the processing machine may be connected by two electrodes in a contact-type conductive manner, so that the power of the power source can be supplied to the conductive plate 11 as a carbon brush, which will not be described herein.
Referring to fig. 3, a second embodiment of an ultrasonic machining tool holder according to the present invention is shown, wherein at least one extension sleeve module 40 is further disposed between the handle portion 10 and the tool mounting portion 20, each extension sleeve module 40 has a male connector end 41 and a female connector end 42, the handle portion 10 is provided with a corresponding male connector end 14, the tool mounting portion 20 is provided with a corresponding female connector end 26, such that each extension sleeve module 40 can be connected to the handle portion 10 and the tool mounting portion 20, and the extension sleeve modules 40 can also be connected in series end to end. The user can select the number of extension sleeve modules 40 to be used to adjust the desired length of the tool holder, as desired for the process.
The ultrasonic machining tool holder provided by the invention has the advantages that the ultrasonic vibration unit is arranged on the tool mounting part for fixing the tool, the transmission path of an ultrasonic high-frequency vibration source can be effectively shortened, the tool holder is prevented from generating unexpected connection vibration due to the influence of the ultrasonic high-frequency vibration, meanwhile, the problem of insufficient rigidity which cannot be solved by the tool holder with high slenderness ratio during machining is solved, and the better surface smoothness and machining precision of a workpiece are maintained. Particularly an elongated tool holder or a modular tool holder, of extended length, particularly suitable for use with the ultrasonic machining tool holder of the present invention.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. An ultrasonic machining tool holder for use with a machine that is powered by a spindle, the tool holder comprising:
a shank received in the spindle, the shank having a conductive disc disposed thereon, the conductive disc being in electrical communication with the spindle for conducting the power source to the tool holder;
a tool mounting portion including an axially extending tool mounting aperture capable of receiving and retaining a portion of a tool; and
the ultrasonic vibration unit is fixedly arranged in the tool mounting part and is electrically connected to the conductive disc, so that the ultrasonic vibration unit can receive the power supply and generate high-frequency vibration, and the high-frequency vibration is transmitted to the tool through the tool mounting part.
2. The ultrasonic machining tool holder of claim 1, wherein the tool mount portion further comprises:
the tool mounting hole is formed in the elastic chuck, a plurality of axial grooves which are parallel to each other and have one open end are formed on the elastic chuck, and a plurality of elastic claw pieces are formed among the axial grooves; and
and when the locking piece is locked, the locking piece applies force to the plurality of elastic claw sheets to enable the elastic claw sheets to elastically deform, so that the tool arranged in the elastic chuck is clamped inwards.
3. The ultrasonic machining tool holder of claim 1, wherein: the handle and the tool mounting portion are provided with cable guide holes communicated with each other, and the conductive disc is electrically connected to the ultrasonic vibration unit through a cable passing through the cable guide holes.
4. The ultrasonic machining tool holder of claim 1, wherein: also includes at least one extension sleeve module connected in series between the handle portion and the tool mounting portion.
5. The ultrasonic machining tool holder of claim 4, wherein: the extension sleeve module is provided with a male joint end part and a female joint end part, so that the extension sleeve modules can be connected in series end to end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146898.6A CN111618669A (en) | 2019-02-27 | 2019-02-27 | Ultrasonic machining tool holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910146898.6A CN111618669A (en) | 2019-02-27 | 2019-02-27 | Ultrasonic machining tool holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111618669A true CN111618669A (en) | 2020-09-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910146898.6A Pending CN111618669A (en) | 2019-02-27 | 2019-02-27 | Ultrasonic machining tool holder |
Country Status (1)
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| CN (1) | CN111618669A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1502528A (en) * | 1921-10-15 | 1924-07-22 | Reulbach Louis | Extensible tool holder |
| US2716030A (en) * | 1953-11-09 | 1955-08-23 | William J Faso | Extension chuck for piercing tools |
| US20090146530A1 (en) * | 2007-12-10 | 2009-06-11 | Industrial Technology Research Institute | Spindle and flexible hinge used in ultrasonic machine |
| WO2009101987A1 (en) * | 2008-02-12 | 2009-08-20 | Uwave Co., Ltd. | Cutting or grinding apparatus |
| CN203018770U (en) * | 2012-11-27 | 2013-06-26 | 陕西航空电气有限责任公司 | Ultrasonic drilling and milling tool for rotating machine |
| CN203791695U (en) * | 2014-02-21 | 2014-08-27 | 山东方达机械有限公司 | Drilling connection rod |
| US8821084B2 (en) * | 2007-06-21 | 2014-09-02 | Primetool Mfg, Inc. | Tool holding module |
| CN203945253U (en) * | 2014-06-04 | 2014-11-19 | 张增英 | Ultrasonic wave rotor for electric main shaft |
| CN104439299A (en) * | 2014-11-12 | 2015-03-25 | 广州市昊志机电股份有限公司 | Motorized spindle |
| CN207255316U (en) * | 2017-07-07 | 2018-04-20 | 常州正河源数控工具有限公司 | Ultrasonic wave handle of a knife |
| CN109202553A (en) * | 2018-09-29 | 2019-01-15 | 广州汇专工具有限公司 | Ultrasonic wave cutter head assembly and the method for measuring the cutter head assembly center of gravity |
-
2019
- 2019-02-27 CN CN201910146898.6A patent/CN111618669A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1502528A (en) * | 1921-10-15 | 1924-07-22 | Reulbach Louis | Extensible tool holder |
| US2716030A (en) * | 1953-11-09 | 1955-08-23 | William J Faso | Extension chuck for piercing tools |
| US8821084B2 (en) * | 2007-06-21 | 2014-09-02 | Primetool Mfg, Inc. | Tool holding module |
| US20090146530A1 (en) * | 2007-12-10 | 2009-06-11 | Industrial Technology Research Institute | Spindle and flexible hinge used in ultrasonic machine |
| WO2009101987A1 (en) * | 2008-02-12 | 2009-08-20 | Uwave Co., Ltd. | Cutting or grinding apparatus |
| CN203018770U (en) * | 2012-11-27 | 2013-06-26 | 陕西航空电气有限责任公司 | Ultrasonic drilling and milling tool for rotating machine |
| CN203791695U (en) * | 2014-02-21 | 2014-08-27 | 山东方达机械有限公司 | Drilling connection rod |
| CN203945253U (en) * | 2014-06-04 | 2014-11-19 | 张增英 | Ultrasonic wave rotor for electric main shaft |
| CN104439299A (en) * | 2014-11-12 | 2015-03-25 | 广州市昊志机电股份有限公司 | Motorized spindle |
| CN207255316U (en) * | 2017-07-07 | 2018-04-20 | 常州正河源数控工具有限公司 | Ultrasonic wave handle of a knife |
| CN109202553A (en) * | 2018-09-29 | 2019-01-15 | 广州汇专工具有限公司 | Ultrasonic wave cutter head assembly and the method for measuring the cutter head assembly center of gravity |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200904 |