CN105710402A - Non-circular conical-surface straight tightening-type connector - Google Patents
Non-circular conical-surface straight tightening-type connector Download PDFInfo
- Publication number
- CN105710402A CN105710402A CN201610232985.XA CN201610232985A CN105710402A CN 105710402 A CN105710402 A CN 105710402A CN 201610232985 A CN201610232985 A CN 201610232985A CN 105710402 A CN105710402 A CN 105710402A
- Authority
- CN
- China
- Prior art keywords
- knife bar
- knife
- conical surface
- front portion
- handle
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
Abstract
The invention provides a non-circular conical-surface straight tightening-type connector. The non-circular conical-surface straight tightening-type connector comprises a cutter rod and a cutter handle, wherein the front part of the cutter rod is of a hollow short taper structure which is a non-circular conical body with a taper ratio of 1:20; the end part of the cutter handle is provided with a cavity which is matched with the front part of the cutter rod; and the front part of the cutter rod is connected into the inner part of the cavity in a sleeved manner. According to the connector provided by the invention, high-precision centering can be conveniently realized; precise and reliable centering is ensured; and a driving key or a polygon does not need to be additionally arranged for torque transmission.
Description
Technical field
The invention belongs to Machining Technology for Cutting field, be specifically related to the conical surface vertical pulling compact form interface of a kind of not rounded.
Background technology
The selection of mounting and clamping system is one of important content in Digit Control Machine Tool configuration, and it not only affects the production efficiency of Digit Control Machine Tool, and directly affects the crudy of part.Reasonable selection mounting and clamping system, can obtain the effect got twice the result with half the effort under an economical condition.Mounting and clamping system is divided into monoblock type and modular two kinds: monoblock type, it is one that the working portion of clamping cutter installs position tool shanks part with it on lathe, if cutter for same type is many, then handle of a knife specification is also just many, so handle of a knife is poor to the conversion adaptive capacity of lathe Yu part；Modular, is formed by the module assembled of various seriations, for different processing parts and lathe, takes different assembling schemes, thus improving adaptive capacity and the utilization rate of handle of a knife.Cutter module three part that modular mounting and clamping system is clamped by the handle of a knife module being directly fixed on machine tool chief axis, the knife bar module of middle connection, head forms, get final product the different types of cutter of clamping by the knife bar module of different size, meet various process requirements.
At present, in field of machining, the rotation speed requirements of machine tool chief axis is stepped up, and then tool system reliability be it is also proposed further requirement, the interface of handle of a knife and knife bar is the important component part of Modern High-Speed lathe, and the height of its technical merit determines machining accuracy and the working (machining) efficiency of workpiece.Traditional knife bar, cutter is installed in one end, and the other end makes cylinder or cone, and the handle of a knife of connected cooperation also needs to make cylindrical or conical accordingly；During work, the pin that passes through of rotation torque connects, drives key connection or polygon connection to realize, but above-mentioned connection needs additionally to arrange, increase cost and difficulty of processing, and all there is matched in clearance in above-mentioned connection, connecting precision cannot ensure, this cooperation can cause that moment of torsion loses in transmittance process in addition, affects machining accuracy and production efficiency.
Summary of the invention
It is an object of the invention to provide the conical surface vertical pulling compact form interface of a kind of not rounded, it is possible to high precision fixed core easily, it is ensured that accurately centering reliably, and without additionally arranging driving key or polygon to transmit moment of torsion.
The technical scheme is that
A kind of conical surface vertical pulling compact form interface of not rounded, including knife bar and handle of a knife, described knife bar front portion is non-cone, taper ratio is the hollow short wimble structure of 1:20, and the end of described handle of a knife is provided with suitable cavity anterior with knife bar, and knife bar front portion is socketed on described cavity inside.Non-cone refers to the non-circular vertebral body of cross sectional shape, such as pyramid, prism etc..
The conical surface vertical pulling compact form interface of above-mentioned not rounded, also include stretching screw, the axially inside direction of described handle of a knife is provided with the shoulder hole for installing described stretching screw and first screwed hole suitable with described stretching screw, and described first screwed hole is connected with described cavity；The inside of described knife bar front portion is provided with second screwed hole suitable with described stretching screw, and handle of a knife is connected with knife bar front portion by described stretching screw by threaded engagement.
The conical surface vertical pulling compact form interface of above-mentioned not rounded, described stretching screw is soket head cap screw.
The conical surface vertical pulling compact form interface of above-mentioned not rounded, described knife bar front portion is Rhizoma Sparganii cone or rectangular pyramid or pentagonal pyramid body or hexagonal pyramid body or seven pyramids, above-mentioned pyramid is positive pyramid body, and the plane that the top design of pyramid body is the bottom surface being parallel to this pyramid (bottom surface of pyramid and be parallel to bottom surface a cross section between part, also referred to as terrace with edge)；The conical surface between rib and rib and rib that knife bar is anterior is arc.
The conical surface vertical pulling compact form interface of above-mentioned not rounded, the cross section contour curve of described knife bar front portion is equidistant curve, and described handle of a knife and described knife bar front portion constitute equidistant profile and connect.
The conical surface vertical pulling compact form interface of above-mentioned not rounded, described knife bar is anterior and between described cavity for closely cooperating.
The conical surface vertical pulling compact form interface of above-mentioned not rounded, described knife bar front portion adopts grinding machine to make.
Beneficial effects of the present invention:
The knife bar that the conical surface vertical pulling compact form interface of not rounded of the present invention is provided with non-cone is anterior, knife bar front portion can be designed as Rhizoma Sparganii cone, rectangular pyramid, pentagonal pyramid body, hexagonal pyramid body, the multiple pyramidal structures such as seven pyramids, high precision fixed core can be conveniently realized, knife bar and handle of a knife carry out the conical surface simultaneously and end face coordinates, adopt the mode of dual contact clamping, exactly because also this location mode, ensure that accurately centering reliably, the conical surface vertical pulling compact form interface making not rounded of the present invention can be completely eliminated axial position error when connecting knife bar and handle of a knife, this attachment structure repetitive positioning accuracy in three directions, space is 5 μm, precision of beating is 8 μm, make interchangeable knife bar be applied to high accuracy cutting to be possibly realized；What is more important, the conical surface vertical pulling compact form interface of not rounded of the present invention can transmit moment of torsion without additionally arranging driving key or polygon, and stress is concentrated little, and transmission moment of torsion is big, also reduces the risk of loss of significance, decreases production cost.Specific to the technical solution adopted in the present invention, also have the beneficial effect of following many aspects:
(1) in the conical surface vertical pulling compact form interface of not rounded of the present invention, devise the hollow short wimble structure of the non-cone of uniqueness, this structure has the advantage that surface area is big and precision stability is good, therefore operationally, the anterior surface pressing of knife bar is low, be unlikely to deform, wear and tear little, it is effectively guaranteed precision and the durability of interface, and then improves machining accuracy and production efficiency；By in the structural design of non-cone to knife bar but not on handle of a knife, so just the restriction of machine tool chief axis interface it is not necessarily subject, all can optionally change the tool type used, and handle of a knife is based on machine tool chief axis comparatively speaking and determines, can only use the handle of a knife specified by machine tool chief axis；Knife bar front portion is designed as non-cone and taper ratio is the Small Taper of 1:20, the self-lock force of this hollow short wimble structure is much larger than the self-lock force of other structure, more reliability, high precision fixed core can be conveniently realized, and knife bar front portion is socketed in cavity, in the middle part of knife bar cylindrical, its end face and handle of a knife end closely cooperate, simultaneously constitute the conical surface and end face coordinates, cone match ensure that the radial direction positioning precision of interface, end face coordinates the axial positioning precision and the axial rigidity that ensure that interface, thus further ensures the concentricity of knife bar and handle of a knife.
(2) in the conical surface vertical pulling compact form interface of not rounded of the present invention, the inside of handle of a knife is provided with stretching screw, handle of a knife is connected with knife bar front portion by this stretching screw by threaded engagement, the tightening force of stretching screw can make the end face in the middle part of cylindrical knife bar and handle of a knife end be close to, reach certain contact stress, so that the conical surface and end face realize location and the function of clamping simultaneously, it is ensured that the axial positioning precision of interface and axial rigidity；And this attachment structure is not because selling connection, driving the parts such as key connection or polygon connection, therefore it is absent from using the distortion problem driving key etc. to cause, in most tool system attachment structure, generally all it is dependent on driving key to transmit the cutting moment of torque, this can drive generation stress on key to concentrate, and thus can reduce service life of tool system, drive the phase error that key and keyway fit clearance are brought that positioning precision can be made to decline；And the present invention adopts this symmetrical structure without driving key and keyway of hollow short wimble structure of non-cone, without driving key to transmit the cutting moment of torque, thus do not have " click " sound often said, this is extremely important to turning operation, and the cutting moment of torque of such hollow short wimble structure is evenly distributed, be conducive to improving its torsional rigid.
(3) for closely cooperating between end face and the handle of a knife end in the middle part of cylindrical knife bar, described knife bar is anterior and between described cavity also for closely cooperating, above-mentioned fit system not only achieves handle of a knife and knife bar carries out the mode that the dual contact of the conical surface and end face cooperation clamps simultaneously, also ensure that the conical surface and the high laminating rate of end face, can make in the middle part of knife bar and between the end of handle of a knife and between knife bar front portion and cavity, form gapless location, avoid the interface that the existence in gap causes and connect the reduction of precision, avoid moment of torsion loss in transmittance process simultaneously.
(4) in the present invention, the axially inside direction of handle of a knife is provided with the shoulder hole for installing described stretching screw, and the stretching screw that is designed as of this shoulder hole provides installation site so that interface clamps from inside to outside；And the inner portion of stretching screw is abutted against the cascaded surface of described shoulder hole turning point, the installation site that so can make stretching screw is more firm, is conducive to provide higher clamping force, it is ensured that being stably connected with of interface.
(5) stretching screw used in the present invention is interior hexangle type, can be mounted and dismounted the interface of the present invention easily by die nut, time saving and energy saving.
(6) in the conical surface vertical pulling compact form interface of not rounded of the present invention; the conical surface between rib and rib and the rib of described hollow short wimble structure is arc; this kind of design can make stress distribution comparatively uniform; and contact area is bigger; stress is concentrated in confused situation aobvious; rotary speed, how all without spike, occurs when frequent tool changing that the probability of abrasion is less in the course of the work, and the precision of docking port and durability have good protective effect.
(7) the cross section contour curve that described knife bar is anterior is designed as equidistant curve, handle of a knife and knife bar front portion constitute equidistant profile and connect, anterior and handle of a knife end the cavity of knife bar is made to have perfect certralizing ability, it is possible to make load be symmetrically dispersed on knife bar front portion, it is ensured that precise alignment.
(8) inside and outside two mating surfaces that in the present invention, knife bar is anterior are to form with grinding machine, grinding machine grinding can go out polygonal pyramid and the quantum jump contacting end face and be grinding technique, and grinding can ensure that the anterior higher dimensional accuracy of knife bar, so that the connection of interface of the present invention coordinates fabulous, connect precision high, this high-precision cooperation ensure that moment of torsion will not lose in transmittance process, it is ensured that machining accuracy and production efficiency.
In addition the conical surface vertical pulling compact form interface of not rounded of the present invention has the cross-sectional strength of excellence, can use higher clamping force, so that it is guaranteed that the blade precision of the cutter of the bending rigidity of excellence and the described interface of use and repetitive positioning accuracy；The present invention changes the size of self also dependent on different tool diameters, suitable in polytype cutter such as plain cutter, boring cutter, rose cutter etc., when needing to change cutter, handle of a knife is not affected, the cutter being continually changing only needs the replacing by knife bar, can be achieved with exchanging requirement, greatly optimizes quick-replaceable operation and the toolsetting time of cutter, reduce the cost that handle of a knife is changed, so that seriation modularity of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the knife bar of the Rhizoma Sparganii cone in Fig. 1；
Fig. 3 is the front view of the knife bar of rectangular pyramid；
Fig. 4 is the right view of knife bar in Fig. 3；
Fig. 5 is the knife bar A-A generalized section in Fig. 3；
Fig. 6 is the front view of the knife bar of pentagonal pyramid body；
Fig. 7 is the right view of knife bar in Fig. 6；
Fig. 8 is the knife bar A-A generalized section in Fig. 6；
Fig. 9 is the front view of the knife bar of hexagonal pyramid body；
Figure 10 is the right view of knife bar in Fig. 9；
Figure 11 is the knife bar A-A generalized section in Fig. 9；
Figure 12 is the front view of the knife bar of seven pyramids；
Figure 13 is the right view of knife bar in Figure 12；
Figure 14 is the knife bar A-A generalized section in Figure 12；
1 knife bar is anterior；2 handle of a knifes；3 stretching screws；4 cylinders；5 back chipping grooves；6 second screwed holes；7 knife bars.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme is made specific description:
The conical surface vertical pulling compact form interface of not rounded of the present invention, knife bar front portion can be designed as Rhizoma Sparganii cone as shown in Figure 2, such as Fig. 3 to the rectangular pyramid shown in 5, such as Fig. 6 to the pentagonal pyramid body shown in 8, hexagonal pyramid body as shown in Figs. 9 to 11, such as Figure 12 to seven pyramids shown in 14, (dotted line in Fig. 4, Fig. 7, Figure 10 and Figure 13 is only displaying prism shape, do not indicate that the practical structures of pyramid), the top design of above-mentioned pyramid is the plane of the bottom surface being parallel to this pyramid, illustrates for Rhizoma Sparganii cone as shown in Figures 2 and 3 below.
As illustrated in fig. 1 and 2, the conical surface vertical pulling compact form interface of a kind of not rounded of the present invention, including knife bar 7 and handle of a knife 2, described knife bar anterior 1 adopts grinding machine to make, it is designed as Rhizoma Sparganii cone, taper ratio is the hollow short wimble structure of 1:20, the end of described handle of a knife 2 is provided with the cavity suitable with knife bar front portion 1, knife bar front portion 1 is socketed on described cavity inside, for closely cooperating between described knife bar anterior 1 and described cavity, in the middle part of knife bar, 4 is cylindrical, the end of its end face and handle of a knife 2 closely cooperates, thus knife bar 7 and handle of a knife 2 carry out the conical surface and end face cooperation simultaneously, achieve the mode of dual contact clamping.Further, the conical surface between rib and rib and the rib of described knife bar front portion 1 is designed as arc, wherein the radian of rib is set to R3, radius of the radian is 3mm, the radian of the conical surface between rib and rib is set to R15, radius of the radian is 15mm, and its cross section contour curve forms equidistant curve, described handle of a knife 2 and described knife bar anterior 1 and constitutes equidistant profile connection.Present invention additionally comprises stretching screw 3, described stretching screw 3 is soket head cap screw；The axially inside direction of described handle of a knife 2 is provided with the shoulder hole for installing described stretching screw 3 and first screwed hole suitable with described stretching screw 3, and described first screwed hole is connected with described cavity；The end of the first screwed hole is provided with back chipping groove 5, to ensure that stretching screw 3 coordinates with the complete of the first screwed hole, this is also the conventional means of hole processing, during screw thread process, often can not screw at the screw thread at screw tip place, in order to ensure that screw thread can be screwed into the end, screw tip place being processed a groove out, this groove is just back chipping groove；The inside of described knife bar front portion 1 is provided with second screwed hole 6 suitable with described stretching screw 3, and handle of a knife 2 is connected with knife bar front portion 1 by described stretching screw 3 by threaded engagement.
During use, knife bar front portion 1 is socketed in the cavity of handle of a knife 2 end, make it closely cooperate, again stretching screw 3 is inserted from the other end of handle of a knife 2, using die nut to rotate stretching screw 3 makes it screw in the first screwed hole and the second screwed hole 6 successively, handle of a knife 2 is connected with knife bar 7, constitutes simultaneously and closely cooperates, thus constitute vertical pulling compact form interface in the middle part of knife bar between end face and the end of described handle of a knife 2 of 4.When needing to change cutter, using die nut to screw out stretching screw 3, more changing knife rod 7 can be achieved with the replacing of cutter, greatly optimizes quick-replaceable operation and the toolsetting time of cutter.
The conical surface vertical pulling compact form interface of not rounded of the present invention can be completely eliminated axial position error when connecting knife bar and handle of a knife, this attachment structure repetitive positioning accuracy in three directions, space is 5 μm, precision of beating is 8 μm, and the present invention adopts this symmetrical structure without driving key and keyway of hollow short wimble structure of non-cone, without driving key to transmit the cutting moment of torque, stress is concentrated little, how rotary speed is all without spike, thus do not have " click " sound often said, this is extremely important to turning operation, make interchangeable knife bar be applied to high accuracy cutting to be possibly realized.
It should be noted last that: above-described embodiment is merely to illustrate and unrestricted technical scheme; any equivalent replacement that the present invention is carried out and amendment or local without departing from spirit and scope of the invention are replaced, and it all should be encompassed within the scope of the claims in the present invention protection.
Claims (7)
1. the conical surface vertical pulling compact form interface of a not rounded, including knife bar and handle of a knife, it is characterized in that: described knife bar front portion is non-cone, taper ratio is the hollow short wimble structure of 1:20, and the end of described handle of a knife is provided with suitable cavity anterior with knife bar, and knife bar front portion is socketed on described cavity inside.
2. the conical surface vertical pulling compact form interface of not rounded according to claim 1, it is characterized in that: also include stretching screw, the axially inside direction of described handle of a knife is provided with the shoulder hole for installing described stretching screw and first screwed hole suitable with described stretching screw, and described first screwed hole is connected with described cavity；The inside of described knife bar front portion is provided with second screwed hole suitable with described stretching screw, and handle of a knife is connected with knife bar front portion by described stretching screw by threaded engagement.
3. the conical surface vertical pulling compact form interface of not rounded according to claim 2, it is characterised in that: described stretching screw is soket head cap screw.
4. the conical surface vertical pulling compact form interface of not rounded according to claim 1 and 2, it is characterized in that: described knife bar front portion is Rhizoma Sparganii cone or rectangular pyramid or pentagonal pyramid body or hexagonal pyramid body or seven pyramids, and the conical surface between rib and rib and rib that knife bar is anterior is arc.
5. the conical surface vertical pulling compact form interface of not rounded according to claim 4, it is characterised in that: the cross section contour curve of described knife bar front portion is equidistant curve, and described handle of a knife and described knife bar front portion constitute equidistant profile and connect.
6. the conical surface vertical pulling compact form interface of not rounded according to claim 1, it is characterised in that: described knife bar is anterior and between described cavity for closely cooperating.
7. the conical surface vertical pulling compact form interface of not rounded according to claim 1, it is characterised in that: described knife bar front portion adopts grinding machine to make.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016101319386 | 2016-03-09 | ||
| CN201610131938 | 2016-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105710402A true CN105710402A (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610232985.XA Pending CN105710402A (en) | 2016-03-09 | 2016-04-15 | Non-circular conical-surface straight tightening-type connector |
| CN201620314118.6U Active CN205763947U (en) | 2016-03-09 | 2016-04-15 | A kind of conical surface vertical pulling compact form interface of not rounded |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620314118.6U Active CN205763947U (en) | 2016-03-09 | 2016-04-15 | A kind of conical surface vertical pulling compact form interface of not rounded |
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| CN (2) | CN105710402A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226858A (en) * | 2018-10-31 | 2019-01-18 | 郑州市钻石精密制造有限公司 | A kind of milling machine and its milling knife handle |
| CN110681928A (en) * | 2019-08-30 | 2020-01-14 | 中国航发动力股份有限公司 | Part grinding quick-change clamp and grinding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226858A (en) * | 2018-10-31 | 2019-01-18 | 郑州市钻石精密制造有限公司 | A kind of milling machine and its milling knife handle |
| CN109226858B (en) * | 2018-10-31 | 2023-12-05 | 郑州市钻石精密制造有限公司 | Milling machine tool and milling cutter handle thereof |
| CN110681928A (en) * | 2019-08-30 | 2020-01-14 | 中国航发动力股份有限公司 | Part grinding quick-change clamp and grinding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205763947U (en) | 2016-12-07 |
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Application publication date: 20160629 |