CN110340749A - A kind of design method of the complex vibration grinding wheel for Ultrasonic machining - Google Patents
A kind of design method of the complex vibration grinding wheel for Ultrasonic machining Download PDFInfo
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- CN110340749A CN110340749A CN201910643626.7A CN201910643626A CN110340749A CN 110340749 A CN110340749 A CN 110340749A CN 201910643626 A CN201910643626 A CN 201910643626A CN 110340749 A CN110340749 A CN 110340749A
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- bull ring
- outer layer
- layer bull
- ring
- flange
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with cooling provisions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a kind of design methods of complex vibration grinding wheel for Ultrasonic machining, have following steps: according to processing request, determining the mode of oscillation of ULTRASONIC COMPLEX vibration grinding wheel；According to the size of required mode of oscillation design internal layer bull ring, outer layer bull ring and connecting taper shank；Determine outer layer bull ring water flowing hole site: outer layer bull ring water flowing hole site is overlapped with pitch diameter position when outer layer bull ring pitch diameter mode；Determine the connection relationship of connecting taper shank Yu the outer layer bull ring；Connecting flange is designed according to outer layer bull ring operation mode；Each components are assembled into ultrasonic vibration composite wheel.The complex vibration grinding wheel for Ultrasonic machining that the present invention designs can reduce pitch circle, the friction at node, it realizes and carries out roughing and finishing in a procedure, improve production efficiency, change the fluting form of ectonexine bull ring, available various forms of ultrasonic vibrations, to meet different processing requests, processing quality is further increased.
Description
Technical field
The present invention relates to Ultrasonic machining field, the design of specifically a kind of complex vibration grinding wheel for Ultrasonic machining
Method.
Background technique
With Aeronautics and Astronautics industrial expansion, ceramics, silicon carbide answer the strong material of the hardness such as material height, brittleness obtain it is more next
More it is widely applied.This kind of material usually has excellent chemistry and physical property, in manufacture precision component or severe work
Make to play good effect under environment.But due to the hard crisp characteristic of material, cause its difficulty of processing larger, material when processing
Easily broken, grinding area temperature is high, and tool wear is serious.Therefore, in order to guarantee processing quality and efficiency, it is a kind of suitable to need
Processing method meets the needs of production.
Ultrasonic vibration aided grinding technology is that ultrasonic vibration is ground a kind of new special processing technology combined with plain wheel.
Studies have shown that Material Removal Mechanism can be changed in ultrasonic vibration aided grinding, so that process has, cutting force is small, cutting heat is low, knife
Has the features such as high service life, high in machining efficiency, machined surface quality；To hard brittle material, complex-shaped type chamber and type face and
The parts such as thin-walled, Low rigidity embody preferable process advantage, it is considered to be process the effective way of hard brittle material.
Grinding wheel is important cutter used in ultrasonic vibration aided grinding, and the quality of structure design directly influences ultrasonic vibration
The performance of system performance and the processing quality of part and processing efficiency.Ultrasonic wave added is carried out frequently with cup wheel in the prior art
Grinding, the middle section matrix of grinding wheel are removed, and whole is in single layer cup-like structure；When grinding wheel diameter is larger, effectively it is ground
Abrasive grain is distributed only over the edge of grinding wheel, and grinding wheel inner space is larger and does not have grinding capacity, while the structure vibration of monolayer abrasive wheel
It moves in the form of a single, thus limits the further promotion of wheel grinding efficiency and quality.In order to solve the above problem, it needs from basic
On propose a kind of complex vibration grinding wheel and its design method, due to the introducing of ultrasound, need to comprehensively consider the structure of grinding wheel to protect
Grinding capacity is demonstrate,proved, considers the ultrasonic vibrational mode of grinding wheel to reach expected vibrating effect, is considered super between grinding wheel connector
The problems such as propagation and loss of acoustic energy, is to realize the maximization of ultrasonic energy delivery efficiency.Above various Considerations to surpass
The design of acoustic vibration grinding wheel is more complicated.
Summary of the invention
It is an object of the invention to provide a kind of complex vibration sand for Ultrasonic machining in processing hard brittle material field
The design method of wheel.The grinding wheel that the present invention designs has inside and outside two layers of bull ring, is connected using the connecting flange of attachment, is sufficiently sent out
The working ability for having waved ultrasonic vibration aided grinding, can be improved production efficiency；Connecting flange shape and installation site can be according to outer layers
Bull ring mode replacement, to reduce the friction at pitch circle, node；It connect, reduces for the conical surface with internal layer bull ring on the inside of connecting flange
The loss that ultrasound is transmitted between interface, ensure that the efficiency of ultrasonic transmission, while improving positioning accuracy；The axis of internal layer bull ring
It is adjustable to height, by adjusting the height of internal layer bull ring axial direction, thus it is possible to vary the face height of ectonexine bull ring is poor, and then controls
The grinding depth of internal layer bull ring carries out roughing and finishing to realize in a procedure, improves production efficiency；In change
The fluting form of outer layer bull ring, available various forms of ultrasonic vibrations are further increased with meeting different processing requests
Processing quality.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of design method of the complex vibration grinding wheel for Ultrasonic machining, ULTRASONIC COMPLEX vibration includes outer layer bull ring, interior
Layer bull ring, connecting flange and connecting taper shank, the design method have following steps: according to processing request, determining that ultrasound is multiple
The mode of oscillation for closing vibration grinding wheel, when needing large magnitude, outer layer bull ring selects pitch circle mode, when needing lesser amplitude
Outer layer bull ring selects pitch diameter mode；
It determines the size of outer layer bull ring: outer layer bull ring size is designed according to fixed operation mode, make it in work frequency
Mode needed for realizing under rate, the outer layer bull ring, the upper end have center taper hole and multiple positioned at center taper hole outer circumferential
Outer layer bull ring limbers, lower end has to be connected to and the outer layer bull ring of open at its lower end with center taper hole and outer layer bull ring limbers
Chamber has multiple outer layer bull ring skewed slots being connected to outer layer bull ring chamber with outer layer bull ring outer wall corresponding to outer layer bull ring chamber,
In, the notch of outer layer bull ring skewed slot is located at outer layer bull ring lower end surface；
It determines internal layer bull ring and connecting taper shank size: determining the size of internal layer bull ring according to the size of outer layer bull ring, make it
It is intracavitary and have suitable axially adjustable amount that outer layer bull ring can be packed into；Connecting taper shank is determined according to the size of inside and outside layer bull ring
Size guarantees that outer layer bull ring and taper shank contact position after the connection of two bull rings are the node locations of ultrasonic wavelength, and internal layer bull ring has
Suitable axially adjustable amount；
Determine outer layer bull ring water flowing hole site: pitch diameter position when outer layer bull ring water flowing hole site and outer layer bull ring pitch diameter mode
Set coincidence；
Design connecting flange according to outer layer bull ring operation mode: connecting flange can be divided into pitch circle formula and pitch diameter formula, fit respectively
Pitch circle mode and pitch diameter mode for outer layer bull ring；Pitch circle formula connecting flange annular diameters are greater than outer layer bull ring pitch diameter；
Isolation channel is opened at corresponding outer layer bull ring pitch diameter in the end face of pitch diameter formula connecting flange；
Each components assembly that design is completed vibrates grinding wheel to get to ULTRASONIC COMPLEX.
The center of outer layer bull ring is taper hole, and it is accurate convenient to feel relieved in the cone match with connecting taper shank, can make outer layer
Bull ring and main shaft have preferable concentricity；The conical surface connects more closely, is transmitting the loss that can reduce energy when ultrasonic vibration, from
And reduce the generation of heat, improve the efficiency of processing；And the conical surface has self-locking performance during being connected to ultrasonic vibration, and processing is more
Safety.
According to outer layer bull ring operation mode discretionary wiring method orchid type, connecting flange is located on the outside of taper shank portion and fixed
On the inner wall of outer layer bull ring chamber upper end, with tapered centre through-hole；
Internal layer bull ring, the internal layer bull ring be installed, the upper end has centre bore and multiple positioned at centre bore outer circumferential
Internal layer bull ring limbers, lower end have the internal layer bull ring chamber being connected to centre bore and internal layer bull ring limbers, the internal layer mill
Outer wall and tapered centre through-hole cone match on the upside of ring, internal layer bull ring lower end surface have multiple internal layer bull ring chip spaces, institute
It states centre bore and is equipped with the screw connecting with taper shank subordinate end, with the variation of screw fastening force, the height of internal layer bull ring
It changes, i.e., with the increase of screw fastening force, pressure increase of the internal layer bull ring upside outer wall to connecting flange, connecting flange
Deformation, tapered centre through-hole expand outwardly, and internal layer bull ring is sliding along tapered centre through-hole, realize the height adjustment of internal layer bull ring；
When taper-face contact, the transmission efficiency of ultrasonic energy is high, solves the problems, such as that the ultrasonic vibration of internal layer bull ring is bad when threaded connection.
The outer layer bull ring skewed slot is uniformly distributed using the axis of the outer layer bull ring as axis, and the outer layer bull ring skewed slot
Tilt angle is 0 °~90 °, and width is 1~10mm, and the ratio of groove depth and groove width is 1~10.Outer layer bull ring skewed slot can make to become
The longitudinal ultrasonic vibration of width bar transmitting derives the ultrasonic amplitude tangential along outer layer bull ring, becomes single longitudinal ultrasonic vibration
Hybrid transducer vibration, keeps abrasive grain track more complicated, improves processing quality, and skewed slot is bigger than straight trough area, heat dissipation effect is more
It is good, it is more advantageous to the temperature for reducing grinding area.
The internal layer bull ring chip space is uniformly distributed using the axis of the internal layer bull ring as axis, facilitates heat dissipation and chip removal；And
And with the change of chip removal groove shape, the ultrasonic vibration form of internal layer bull ring can also change.
The connecting taper shank is the Step Shaft being made of coaxial cylindrical shank portion and taper shank portion, and the cylindrical shank portion is located at institute
State taper shank portion upper end and for connecting with ultrasonic knife handle；
The cylindrical shank portion outer wall is equipped with one section of external screw thread connecting with withdrawing nut；
The taper shank portion is located at the intracavitary cone section outer wall of outer layer bull ring with technology groove；
After outer layer bull ring and the cooperation of connecting taper shank bar, the technology groove top is located in center cone hole, under the technology groove
It is intracavitary that portion is located at the outer layer bull ring, and the technology groove plays the role of escape, and when outer layer bull ring is matched with connecting taper shank
After conjunction, outer layer bull ring is fastened on the conical surface with tapered cup nut, tapered cup nut passes through just with plane where outer layer bull ring contact surface
The technology groove is crossed, vibration isolation is played the role of and reduces friction.
If select outer layer bull ring operation mode as pitch circle mode, the connecting flange includes end face of flange and is located at described
The ring gripping portion of end face of flange lower end；
The end face of flange has the annular groove coaxial with the tapered centre through-hole, and the annular groove is along the connecting flange axis
To extending to the clamping part and the end face of flange be separated into flange inner ring end face and flange outer ring end face, flange inner ring end
Face is lower than flange outer ring end face, guarantees that there are enough spaces in inner ring end face when conical surface deformation.
The ring gripping portion has the clamping part cone for extending to flange inner ring end face and constituting the tapered centre through-hole
Hole, the ring gripping portion are circumferentially evenly arranged with multiple straight troughs, the axis of the extending direction of the straight trough and the connecting flange
It is located at the lower end surface in the ring gripping portion to parallel and notch；
The setting purpose of the annular groove and the straight trough is to weaken ring gripping portion rigidity, increases its deformability.
The cone angle of the clamping part taper hole is 45 °~90 °.
If select outer layer bull ring operation mode as pitch diameter, the connecting flange includes end face of flange and is located at the flange
The ring gripping portion of end face lower end；
The end face of flange has the annular groove coaxial with the tapered centre through-hole, and the annular groove is along the connecting flange axis
To extending to the clamping part and the end face of flange be separated into flange inner ring end face and flange outer ring end face, flange inner ring end
Face is lower than flange outer ring end face.
The ring gripping portion has the clamping part cone for extending to flange inner ring end face and constituting the tapered centre through-hole
Hole, the ring gripping portion are circumferentially evenly arranged with multiple straight troughs, the axis of the extending direction of the straight trough and the connecting flange
It is located at the lower end surface in the ring gripping portion to parallel and notch；
The cone angle of the clamping part taper hole is 45 °~90 °；
Flange outer ring end face is circumferentially evenly arranged with multiple technique isolation channels, and technique isolation channel and the outer layer are ground
The pitch diameter position of ring is corresponding；
The technique isolation channel is fan-shaped, and depth is 0.1mm~3mm, and central angle is 0 °~90 °.
Fillet is equipped between flange outer ring end face and ring gripping portion outer wall, the rounded lower-end is than the ring
The low 1mm or more of slot slot bottom, guarantees the transmitting of ultrasonic energy.
The withdrawing nut have with the pilot hole of the cylindrical shank portion clearance fit and in external screw thread cooperation
Screw thread.External screw thread cooperation when installation on the internal screw thread and connecting taper shank of withdrawing nut, pilot hole and cylindrical shank portion clearance fit.
Withdrawing nut is rotated when withdrawing, can will open because of the self-locking outer layer bull ring of cone match, bull ring is facilitated to replace.
Outer wall is equipped with annular protrusion on the downside of the internal layer bull ring, under the upper surface of the annular protrusion and the cylindrical cavity
End is in the same plane, and the annular protrusion is circumferentially with the vertical slots being connected to internal layer bull ring chip space；
Escape is equipped on the upside of the internal layer bull ring between outer wall and the annular protrusion upper surface.
The design method of complex vibration grinding wheel of the present invention for Ultrasonic machining fully considered pitch circle, pitch diameter,
, it can be achieved that carrying out roughing and finishing in a procedure, raising production efficiency changes ectonexine bull ring for friction at node
Fluting form, available various forms of ultrasonic vibrations further increase processing matter to meet different processing requests
Amount.
The present invention can be widely popularized in fields such as Ultrasonic machinings based on the above reasons.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Design method flow chart in Fig. 1 a specific embodiment of the invention for the complex vibration grinding wheel of Ultrasonic machining.
Fig. 2 is the model analysis figure (a. pitch circle mode, bis- pitch diameter mode of b.) of outer layer bull ring
Fig. 3 is the overall structure signal in a specific embodiment of the invention for the complex vibration grinding wheel of Ultrasonic machining
Figure.
Fig. 4 is the explosive view in a specific embodiment of the invention for the complex vibration grinding wheel of Ultrasonic machining.
Fig. 5 is the main view in a specific embodiment of the invention for the complex vibration grinding wheel of Ultrasonic machining.
Fig. 6 be in Fig. 5 A-A to cross-sectional view.
Fig. 7 is overall diagram (a. pitch circle formula connection method of two kinds of forms of connecting flange in a specific embodiment of the invention
It is blue；B. two pitch diameter formula connecting flange).
Fig. 8 is the cross-sectional view of B-B direction in Fig. 7.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of design method of the complex vibration grinding wheel for Ultrasonic machining, has following steps:
First determine whether operating condition, the complex vibration grinding wheel mode designed needed for determining according to processing request, when the larger vibration of needs
Pitch circle mode is selected when width, pitch diameter mode is selected when needing lesser amplitude, by taking two pitch diameter mode as an example；With complex vibration sand
Taking turns mode is the size according to design outer layer bull ring 30, it is made to meet mode requirement in the operating condition.The outer layer bull ring 30,
The upper end have center taper hole and multiple outer layer bull ring limbers 33 positioned at 31 outer circumferential of center taper hole, lower end with
Center taper hole 31 is connected to outer layer bull ring limbers 33 and the outer layer bull ring chamber 34 of open at its lower end, and corresponding to outer layer bull ring chamber 34
Outer layer bull ring outer wall have multiple outer layer bull ring skewed slots 32 being connected to outer layer bull ring chamber 34, wherein outer layer bull ring skewed slot 32
Notch be located at 30 lower end surface of outer layer bull ring；
Determine 33 position of outer layer bull ring limbers: when 33 position of outer layer bull ring limbers and two pitch diameter mode of outer layer bull ring
Pitch diameter position is overlapped；
Determine the connection relationship of connecting taper shank 20 Yu the outer layer bull ring 30, the connecting taper shank 20, lower end have by
Center taper hole 31 stretches to outer layer bull ring chamber 34 and the taper shank portion with 31 cone match of center taper hole, and the taper shank portion is located at outer layer
Cone section outer wall thread in bull ring chamber 34 is connected with tapered cup nut 40, on 40 upper surface of tapered cup nut and outer layer bull ring chamber 34
Hold inner wall fitting；
According to blue 50 types of 30 operation mode discretionary wiring method of outer layer bull ring, connecting flange 50 is located on the outside of taper shank portion
And be fixed on 34 upper end inner wall of outer layer bull ring chamber, with tapered centre through-hole；
Install internal layer bull ring 70, the internal layer bull ring 70, the upper end have centre bore and it is multiple be located at centre bore week outward
The internal layer bull ring limbers 72 of side, lower end have the internal layer bull ring chamber 74 being connected to centre bore and internal layer bull ring limbers 72,
The 70 upside outer wall 71 of internal layer bull ring and tapered centre through-hole cone match, 70 lower end surface of internal layer bull ring have in multiple
Layer bull ring chip space 73, the centre bore is equipped with the screw 90 connecting with taper shank subordinate end, with 90 fastening force of screw
Variation, the height of internal layer bull ring 70 changes.
The designed complex vibration grinding wheel for Ultrasonic machining, which includes withdrawing nut 10, connecting taper shank 20, outer
Layer bull ring 30, tapered cup nut 40, connecting flange 50, flange fastening screw 60, internal layer bull ring 70 and for fastening internal layer bull ring
Gasket 80 and screw 90.Outer layer bull ring 30 is cooperated by center taper hole 31 and connecting taper shank 20, and is locked with tapered cup nut 40；
Connecting flange 50 is fixed on 34 upper end inner wall of outer layer bull ring chamber by four screws 60, and 50 centre bore of connecting flange is a cone
Lesser tapered centre through-hole is spent, the upside outer wall 71 of internal layer bull ring 70 is cooperated by the conical surface and tapered centre through-hole, transmitting vibration
It moves and positions；The fixation of internal layer bull ring then passes through gasket 80 and screw 90 is realized, screw 90 passes through gasket 80 and internal layer bull ring
Centre bore, be fastened on connecting taper shank 20.
It is circumferentially provided with equally spaced outer layer bull ring skewed slot 32 in outer layer bull ring 30, tilt angle is 0 °~90 °, width 1
The ratio of~10mm, groove depth and groove width is 1~10；The longitudinal ultrasonic vibration that skewed slot can be such that amplitude transformer transmits is derived along outer layer
The tangential ultrasonic amplitude of bull ring makes single longitudinal ultrasonic vibration become Hybrid transducer vibration, keeps abrasive grain track more complicated, improves
Processing quality.And skewed slot is bigger than straight trough area, and heat dissipation effect is more preferable, is more advantageous to the temperature for reducing grinding area.Inside
70 lower end of layer bull ring is circumferentially provided with equally spaced internal layer bull ring chip space 73, facilitates heat dissipation and chip removal.
When uniformly distributed outer layer bull ring limbers 33 there are four on outer layer bull ring 30, position and 30 2 pitch diameter of outer layer bull ring
Pitch diameter position is overlapped.Fig. 2 be outer layer bull ring model analysis figure, outer layer bull ring have in operating frequency range pitch circle formula mode and
Two pitch diameter formula mode, two pitch diameters are around axial uniformly distributed.At this point, outer layer bull ring limbers 33 can make grinding fluid enter internal layer mill
Ring, while playing the role of energy loss and grinding wheel loss of weight caused by reducing invalid vibrate.
It is accurate convenient that the center taper hole 31 of outer layer bull ring 30 is felt relieved in the cone match with connecting taper shank, can make outer layer
Bull ring 30 and main shaft have preferable concentricity；The conical surface connects more closely, is transmitting the loss that can reduce energy when ultrasonic vibration,
To reduce the generation of heat, the efficiency of processing is improved；And the conical surface has self-locking performance during being connected to ultrasonic vibration, processes
It is safer.
Such as Fig. 3~5, connecting taper shank 20 is the Step Shaft being made of coaxial cylindrical shank portion and taper shank portion.Cylindrical shank portion is used
It is connect in collet, it can be on quick-clamping to ultrasonic knife handle；There is one section of external screw thread on cylindrical shank portion, to connect withdrawing
Nut 10.There is one section of taper thread in taper shank portion, and there are a technology groove 22, groove width 2mm, depth 1mm in taper thread upper end；Technology groove
22 both play the role of escape, and after outer layer bull ring and connecting taper shank 20 cooperate, with tapered cup nut 40 by outer layer bull ring
30 are fastened on the conical surface, and plane is played just past the technology groove 22 where tapered cup nut 40 and 30 contact surface of outer layer bull ring
Vibration isolation and the effect for reducing friction, such as Fig. 6；Thread mill drilling 21 on connecting taper shank 20 fastens internal layer to connect with screw 90
Bull ring 70.
Such as Fig. 7~8, connecting flange 50 has different form optional.Such as Fig. 2, outer layer bull ring 30 is analyzed at the operating frequencies
Mode, when mode is pitch circle formula, using pitch circle formula connecting flange in Fig. 7；When mode is two pitch diameter formulas, using in Fig. 7 two
Pitch diameter formula connecting flange.
A. the inner ring surface of pitch circle formula connecting flange is a conical surface 51, i.e. tapered centre through-hole, and cone angle is 80 °~85 °.Institute
Stating pitch circle formula connecting flange includes end face of flange and the ring gripping portion positioned at the end face of flange lower end；The flange end mask
Have an annular groove 53 coaxial with the tapered centre through-hole, the annular groove 53 along the pitch circle formula axially extend to the clamping part and
The end face of flange is separated into flange inner ring end face 54 and flange outer ring end face 55, flange inner ring end face 54 is than flange outer ring end
Low 0.2~the 0.5mm in face 55 guarantees that there are enough spaces in flange inner ring end face 54 when conical surface deformation.The ring gripping portion
With the clamping part taper hole for extending to 54 face of flange inner ring end and the composition tapered centre through-hole, the ring gripping portion is circumferential
It is evenly arranged with multiple straight troughs 52, the axial parallel and notch position of the extending direction of the straight trough 52 and the pitch circle connecting flange
In the lower end surface in the ring gripping portion；The straight trough 52 and the annular groove 53, to weaken the pitch circle connecting flange rigidity,
Increase its deformability.
B. two pitch diameter formula connecting flanges, four technique isolation channels 56 more than pitch circle formula connecting flange, four technique isolation channels 56
It is evenly distributed with around axial, it is corresponding with 30 pitch diameter position of outer layer bull ring；Technique isolation channel 56 is sector, and depth is 0.1mm~3mm, the center of circle
Angle is 0 °~90 °.
Fillet 57, the 57 lower end ratio of fillet are equipped between flange outer ring end face 55 and ring gripping portion outer wall
The low 1mm or more of 53 slot bottom of annular groove, guarantees the transmitting of ultrasonic energy.
30 upside outer wall 71 of the internal layer bull ring and tapered centre through-hole cone match layer bull ring, by the two faces when installation
Cooperation, can position internal layer bull ring 70；Internal layer bull ring 70 is fastened on connecting taper shank 20 with gasket 80 and screw 90；
With the increase of fastening force, 70 upside outer wall 71 of internal layer bull ring deforms the pressure increase of connecting flange 50, connecting flange 50, in
Heart conical through-hole expands outwardly, and internal layer bull ring 70 is sliding along tapered centre through-hole, realizes the height adjustment of internal layer bull ring 70；The conical surface
When contact, the transmission efficiency of ultrasonic energy is high, solves the problems, such as that 70 ultrasonic vibration of internal layer bull ring is bad when threaded connection.Internal layer
It is provided with 4 limbers 72 on bull ring 70, so that grinding fluid is can enter internal layer bull ring chamber 74, and then enter grinding area；It is ground in internal layer
70 lower end surface of ring is circumferentially provided with internal layer bull ring chip space 73, facilitates heat dissipation and chip removal, and the vibration shape of abundant internal layer bull ring.
The 70 downside outer wall of internal layer bull ring is equipped with annular protrusion 75, the upper surface of the annular protrusion 75 and the cylinder
Shape chamber lower end is in the same plane, and it is vertical that being circumferentially with of the annular protrusion 75 is connected to internal layer bull ring chip space 73
Slot；
Escape 76 is equipped between the 70 upside outer wall 71 of internal layer bull ring and 75 upper surface of the annular protrusion.
Such as Fig. 6, there are one section of pilot hole 11 and one section of internal screw thread among withdrawing nut 10.The interior spiral shell of withdrawing nut 10 when installation
External screw thread on line and connecting taper shank 20 cooperates, and the cylindrical shank portion small―gap suture of pilot hole 11 and connecting taper shank 20 cooperates.When withdrawing
Withdrawing nut 10 is rotated, can will be opened because of the self-locking outer layer bull ring 30 of cone match, grinding wheel is facilitated to replace.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of design method of the complex vibration grinding wheel for Ultrasonic machining, it includes outer layer bull ring that ULTRASONIC COMPLEX, which vibrates grinding wheel,
Internal layer bull ring, connecting flange and connecting taper shank, which is characterized in that the design method has following steps:
According to processing request, the mode of oscillation of ULTRASONIC COMPLEX vibration grinding wheel is determined, when needing large magnitude, the selection of outer layer bull ring
Pitch circle mode, when needing lesser amplitude, outer layer bull ring selects pitch diameter mode；
It determines the size of outer layer bull ring: outer layer bull ring size being designed according to fixed operation mode, makes it at the operating frequencies
Mode needed for realizing, the outer layer bull ring, the upper end have center taper hole and multiple outer layers positioned at center taper hole outer circumferential
Bull ring limbers, lower end has to be connected to and the outer layer bull ring chamber of open at its lower end with center taper hole and outer layer bull ring limbers, with
Outer layer bull ring outer wall corresponding to outer layer bull ring chamber has multiple outer layer bull ring skewed slots being connected to outer layer bull ring chamber, wherein outer
The notch of layer bull ring skewed slot is located at outer layer bull ring lower end surface；
It determines internal layer bull ring and connecting taper shank size: determining the size of internal layer bull ring according to the size of outer layer bull ring, it can
Loading outer layer bull ring is intracavitary and has suitable axially adjustable amount；The size of connecting taper shank is determined according to the size of inside and outside layer bull ring,
Guarantee that outer layer bull ring and taper shank contact position after the connection of two bull rings are the node locations of ultrasonic wavelength, and internal layer bull ring has suitably
Axially adjustable amount；
Determine outer layer bull ring water flowing hole site: pitch diameter position weight when outer layer bull ring water flowing hole site and outer layer bull ring pitch diameter mode
It closes；
Design connecting flange according to outer layer bull ring operation mode: connecting flange can be divided into pitch circle formula and pitch diameter formula, be respectively suitable for
The pitch circle mode and pitch diameter mode of outer layer bull ring；Pitch circle formula connecting flange annular diameters are greater than outer layer bull ring pitch diameter；Pitch diameter
Isolation channel is opened at corresponding outer layer bull ring pitch diameter in the end face of formula connecting flange；
Each components assembly that design is completed vibrates grinding wheel to get to ULTRASONIC COMPLEX.
2. design method according to claim 1, which is characterized in that the outer layer bull ring skewed slot is with the outer layer bull ring
Axis is uniformly distributed for axis, and the tilt angle of the outer layer bull ring skewed slot is 0 °~90 °, and width is 1~10mm, groove depth and slot
Wide ratio is 1~10.
3. design method according to claim 1, which is characterized in that the internal layer bull ring, the upper end have centre bore and
Multiple internal layer bull ring limbers positioned at centre bore outer circumferential, lower end has to be connected to centre bore and internal layer bull ring limbers
Internal layer bull ring chamber, outer wall and tapered centre through-hole cone match on the upside of the internal layer bull ring, internal layer bull ring lower end mask
There are multiple internal layer bull ring chip spaces, the centre bore is equipped with the screw connecting with taper shank subordinate end, as screw fastens
The height of the variation of power, internal layer bull ring changes.
The internal layer bull ring chip space is uniformly distributed using the axis of the internal layer bull ring as axis.
4. design method according to claim 1, which is characterized in that the connecting taper shank be by coaxial cylindrical shank portion and
The Step Shaft that taper shank portion is constituted, the cylindrical shank portion are located at taper shank portion upper end and for connecting with ultrasonic knife handle；
The cylindrical shank portion outer wall is equipped with one section of external screw thread connecting with withdrawing nut；
The taper shank portion is located at the intracavitary cone section outer wall of outer layer bull ring with technology groove；
After outer layer bull ring and the cooperation of connecting taper shank bar, the technology groove top is located in center cone hole, the technology groove lower portion
It is intracavitary in the outer layer bull ring.
5. design method according to claim 1, which is characterized in that if selecting outer layer bull ring operation mode for pitch circle mode
When, the connecting flange includes end face of flange and the ring gripping portion positioned at the end face of flange lower end；
The end face of flange has the annular groove coaxial with the tapered centre through-hole, and the annular groove axially prolongs along the connecting flange
It extends to the clamping part and the end face of flange is separated into flange inner ring end face and flange outer ring end face, flange inner ring end face ratio
Flange outer ring end face is low.
The ring gripping portion has the clamping part taper hole for extending to flange inner ring end face and constituting the tapered centre through-hole, institute
It states ring gripping portion and is circumferentially evenly arranged with multiple straight troughs, the extending direction of the straight trough is axial parallel with the connecting flange
And notch is located at the lower end surface in the ring gripping portion；
The cone angle of the clamping part taper hole is 45 °~90 °.
6. design method according to claim 1, which is characterized in that if select outer layer bull ring operation mode as pitch diameter,
The connecting flange includes end face of flange and the ring gripping portion positioned at the end face of flange lower end；
The end face of flange has the annular groove coaxial with the tapered centre through-hole, and the annular groove axially prolongs along the connecting flange
It extends to the clamping part and the end face of flange is separated into flange inner ring end face and flange outer ring end face, flange inner ring end face ratio
Flange outer ring end face is low.
The ring gripping portion has the clamping part taper hole for extending to flange inner ring end face and constituting the tapered centre through-hole, institute
It states ring gripping portion and is circumferentially evenly arranged with multiple straight troughs, the extending direction of the straight trough is axial parallel with the connecting flange
And notch is located at the lower end surface in the ring gripping portion；
The cone angle of the clamping part taper hole is 45 °~90 °；
Flange outer ring end face is circumferentially evenly arranged with multiple technique isolation channels, and technique isolation channel and the outer layer bull ring
Pitch diameter position is corresponding；
The technique isolation channel is fan-shaped, and depth is 0.1~3mm, and central angle is 0 °~90 °.
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| CN2267123Y (en) * | 1995-10-12 | 1997-11-12 | 潘祖涛 | Double pieces adjustable type diamond grainding wheel |
| US20110073380A1 (en) * | 2009-09-29 | 2011-03-31 | Digiovanni Anthony A | Production of reduced catalyst pdc via gradient driven reactivity |
| CN203650283U (en) * | 2014-01-09 | 2014-06-18 | 泉州中星磨具有限公司 | Abrasive disk with improved structure |
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