CN110461521A - Broach tool - Google Patents
Broach tool Download PDFInfo
- Publication number
- CN110461521A CN110461521A CN201880022090.0A CN201880022090A CN110461521A CN 110461521 A CN110461521 A CN 110461521A CN 201880022090 A CN201880022090 A CN 201880022090A CN 110461521 A CN110461521 A CN 110461521A
- Authority
- CN
- China
- Prior art keywords
- processing blade
- teeth portion
- processing
- blade
- broach tool
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
- B23D43/02—Broaching tools for cutting by rectilinear movement
- B23D43/04—Broaching tools for cutting by rectilinear movement having inserted cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
- B23F21/26—Broaching tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The broach tool of one embodiment of the present invention has the multiple processing blades arranged along central axis extended in the vertical direction.Processing blade is respectively provided with to radial outside multiple teeth portion outstanding.Multiple teeth portion are circumferentially arranged according to each processing blade.In axially adjacent processing blade, when along end on observation, the teeth portion of a processing blade is configured between the circumferentially adjacent teeth portion of another processing blade.In each processing blade, the teeth portion that teeth portion processes blade at least one of the processing blade other than axially adjacent processing blade is be overlapped in the axial direction.
Description
Technical field
The present invention relates to broach tools.
Background technique
There is known axially with circumferential with multiple blades, the broach tool processed to spline, internal gear etc..Example
Such as, the broach tool that multiple cutting edges use superhard alloy is described in patent document 1.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2004-345050 bulletin
Summary of the invention
Subject to be solved by the invention
In broach tool as described above, the flank of blade is to be processed and made using surface of the grinding wheel to blade
At.But in more small-sized broach tool, due to the mutual circumferential interval of blade it is small equal and cause there are grinding wheel with
The case where other axially aligned blades interfere.Therefore, it in a part of the peripheral side of blade, can not suitably set
The relief angle of knife face is postponed, the feelings reduced so as to cause the forming accuracy that there is internal gear processed using broach tool etc.
Condition.
In view of the foregoing, one of its goals is to provide the broach tool with following construction to the present invention: even if comparing
It is small-sized, also relief angle can be suitably set within the scope of the complete cycle of the peripheral side of the teeth portion of processing blade.
Means for solving the problems
The broach tool of one embodiment of the present invention is more with arranging along central axis extended in the vertical direction
A processing blade, the processing blade are respectively provided with to radial outside multiple teeth portion outstanding, and multiple teeth portion are according to each
The processing blade and be circumferentially arranged, in the axially adjacent processing blade, when along end on observation, one
The teeth portion of the processing blade is configured between the circumferentially adjacent teeth portion of another processing blade,
In each processing blade, in the processing blade other than the teeth portion and the axially adjacent processing blade
The teeth portion of at least one processing blade is overlapped in the axial direction.
Invention effect
According to one method of the present invention, it provides the broach tool with following construction: even if more small-sized, also can
Relief angle is suitably set within the scope of the complete cycle of the peripheral side of the teeth portion of processing blade.
Detailed description of the invention
Fig. 1 is the side view for showing the broach tool of first embodiment.
Fig. 2 is the side view for showing the processing blade and preceding knife portion of first embodiment.
Fig. 3 is the perspective view for showing the processing blade and preceding knife portion of first embodiment.
Fig. 4 is the figure of the processing blade group of the first embodiment from downside.
Fig. 5 is the figure of a part of the processing blade of the first embodiment from downside.
Fig. 6 is the figure of a part of the broach tool of first embodiment from downside.
Fig. 7 is the figure for showing a part of the cutting process carried out using the broach tool of first embodiment.
Fig. 8 is the figure of the processing blade of the second embodiment from downside.
Fig. 9 is the figure of a part of the broach tool of third embodiment from downside.
Figure 10 is to show the internal gear manufactured with the broach tool using first embodiment and second embodiment
Speed reducer an example cross-sectional view.
Specific embodiment
The Z-direction suitably shown in the various figures is the direction parallel with up and down direction.The positive side of Z-direction is set as
The negative side of Z-direction is set as downside by side.In addition, the central axis J suitably shown in the various figures is i.e. upper and lower along Z-direction
Direction extends.In the following description, the axial direction of central axis J, up and down direction i.e. parallel with Z-direction are referred to as " axis
To ".In addition, the radial direction centered on central axis J is referred to as " radial direction ", by the circumferential abbreviation centered on central axis J
For " circumferential direction ".In addition, " up and down direction ", " upside " and " downside " is only for saying the relative positional relationship of each section
Bright title, actual configuration relation etc. are also possible to the configuration relation etc. other than configuration relation shown in these titles etc..
< first embodiment >
Broach tool 10 shown in FIG. 1 is the tool processed to the teeth portion of internal gear.Broach tool 10 is in center
What is axially extended centered on axis J is rodlike.Broach tool 10 successively has lower side guide 11, processing from downside towards upside
Portion 12, upper side guide 13 and shank 14.
Processing department 12 is that the part of machining is carried out to processing object OP.Processing department 12 has multiple 30 Hes of processing blade
Multiple preceding knife portions 40.That is, broach tool 10 has multiple processing blades 30 and preceding knife portion 40.Multiple processing blades 30 are along upper
The central axis J arrangement that lower section upwardly extends.In the present embodiment, processing blade 30 be for example provided with processing blade 30Aa,
30Ab, 30Ba, 30Bb ... 30Ga, 30Gb, 30Ha, 30Hb this 16.Process blade 30Aa, 30Ab, 30Ba, 30Bb ...
30Ga, 30Gb, 30Ha, 30Hb are arranged successively configuration from downside towards upside.
The size of a part of blade 30Aa, 30Ab, 30Ba, 30Bb ... 30Ga, 30Gb, 30Ha, 30Hb is not processed each other not
Together but it is of similar shape.In the following description, blade 30Aa, 30Ab, 30Ba, 30Bb ... are processed in not intended distinction
In the case where 30Ga, 30Gb, 30Ha, 30Hb, blade 30 is referred to as processed.
In the present embodiment, axially continuously arranging in multiple processing blades 30 is contained at least provided with one
The processing blade group 39 of the processing blade 30 of a part of column.In the present embodiment, multiple processing blade groups 39 are provided with.Add
Work blade group 39 is for example comprising processing blade group 39A to processing blade group 39H this eight.In the following description, not specially
In the case where distinguishing processing blade group 39A to processing blade group 39H, blade group 39 is referred to as processed.
Processing blade group 39A includes processing blade 30Aa and processing blade 30Ab.Processing blade group 39B includes processing blade
30Ba and processing blade 30Bb.Processing blade group 39C includes processing blade 30Ca and processing blade 30Cb.Process blade group 39D
Include processing blade 30Da and processing blade 30Db.Processing blade group 39E includes processing blade 30Ea and processing blade 30Eb.Add
Work blade group 39F includes processing blade 30Fa and processing blade 30Fb.Processing blade group 39G includes processing blade 30Ga and processing
Blade 30Gb.Processing blade group 39H includes processing blade 30Ha and processing blade 30Hb.That is, respectively processing blade group 39 is each respectively
Comprising there are two processing blades 30.As shown in Figures 2 and 3, processing blade 30 has tapering 31 and main part 32.Tapering 31 be in
Circular cone shape centered on central axis J, outer diameter become larger from upside towards downside.Main part 32, which is in central axis J, is
The substantially external tooth colyliform of the heart.Main part 32 is connected in the downside in tapering 31 with the lower end in tapering 31.In the outer peripheral surface of main part 32
On be provided with to radial outside multiple teeth portion 33 outstanding.That is, processing blade 30 be respectively provided with it is outstanding multiple to radial outside
Teeth portion 33.
As shown in figure 4, multiple teeth portion 33 are circumferentially arranged according to each processing blade 30.Multiple 33 edges of teeth portion
Circumferential equally spaced configured within the scope of complete cycle.The mutual interval of teeth portion 33 circumferentially adjacent in blade 30 is processed at one
It is bigger than the circumferential size of teeth portion 33.In axially adjacent processing blade 30, when along end on observation, a processing blade 30
Teeth portion 33 be configured at another processing blade 30 circumferentially adjacent teeth portion 33 between.
In Fig. 4, the processing blade 30Ha and processing blade 30Hb that processing blade group 39H is included are equivalent to along axial phase
Adjacent processing blade 30.When along end on observation, the teeth portion 33 of processing blade 30Ha is configured at the circumferentially phase of processing blade 30Hb
Between adjacent teeth portion 33.When more specifically, along end on observation, the teeth portion 33 of processing blade 30Ha is configured at processing blade
The circumferentially adjacent mutual center of teeth portion 33 of 30Hb.
When along end on observation, teeth portion 33, i.e. one that processing blade 30Ha and processing blade 30Hb are included processes blade
The teeth portion 33 that group 39H is included circumferentially equally spaced configures.The shape of processing blade group 39H when along end on observation be with
External tooth colyliform centered on central axis J.It processes the quantity of the teeth portion 33 of blade 30Ha and processes the teeth portion 33 of blade 30Hb
Quantity is mutually the same.What the quantity of the quantity and the teeth portion 33 of processing blade 30Hb of processing the teeth portion 33 of blade 30Ha was added together
Quantity, the i.e. sum of the teeth portion 33 of processing blade group 39H and the quantity of the teeth portion of the internal gear processed using broach tool 10
It is identical.
The tooth form of teeth portion 33 is, for example, cycloidal tooth profile.It, can also be in addition, the tooth form of teeth portion 33 is also possible to trochoidal curve tooth form
It is involute profile.
Teeth portion 33f is respectively provided with the rake face 35 towards downside.In the present embodiment, rake face 35 is processing blade 30
Lower surface a part, and it is axially vertical.The lower surface of processing blade 30 be towards downside and with it is axially vertical flat
Face.That is, according to each processing blade 30, the configurations of rake face 35 of multiple teeth portion 33 on axially vertical same plane.
As shown in Fig. 2, teeth portion 33 has the flank 36 being arranged within the scope of complete cycle in the peripheral side of teeth portion 33 respectively.
In the present embodiment, the rear knife that the flank 36 of each teeth portion 33 is processed in blade 30 with circumferentially adjacent teeth portion 33 at one
Face 36 is separated from each other.The flank 36 of each teeth portion 33 is circumferentially discretely arranged as a result,.The lower end of flank 36 and rake face
35 radially outer edge is connected.Rib between rake face 35 and flank 36 is the cutting edge 38 for processing blade 30.In addition, in this theory
In bright book, " peripheral side " refers to face circumferentially, is the face towards radial outside.
Flank 36 is relative to axial direction with relief angle θ inclination.More specifically, when observing along the vertical direction, with from downside
Towards upside, flank 36 is tilted towards the inside of cutting edge 38.It is all identical angle that relief angle θ, which is in circumferential any position,
Degree.As a result, as shown in phantom in Figure 5, in each teeth portion 33, by flank 36 and with the flank on axially vertical section
36 radially outer edge, which is configured, has separated equidistant position in radially outer edge, that is, cutting edge 38 inwardly with rake face 35.
In the present embodiment, the relief angle θ of flank 36 is bigger than 0 °.As an example, relief angle θ be 2 ° or more and 5 ° with
Under, preferably 3 °.By making relief angle θ using such value, flank 36 can be made sufficiently to keep away and move back and inhibit the strong of teeth portion 33
Degree reduces.
In each processing blade 30, in the processing blade 30 other than teeth portion 33 and axially adjacent processing blade 30
The teeth portion 33 of at least one processing blade 30 is overlapped in the axial direction.In the present embodiment, what processing blade group 39 was included adds
The processing blade that the teeth portion 33 of the processing blade 30 for being configured at downside in work blade 30 and other processing blade groups 39 are included
The teeth portion 33 of the processing blade 30 for being configured at downside in 30 is overlapped in the axial direction.That is, as shown in fig. 6, processing blade 30Aa's
Teeth portion 33, the teeth portion 33 for processing blade 30Ba, the teeth portion 33 for processing blade 30Ca, the teeth portion 33 for processing blade 30Da, processing sword
The teeth portion 33 of portion 30Ea, the teeth portion 33 for processing blade 30Fa, the teeth portion 33 for processing blade 30Ga and the tooth for processing blade 30Ha
Portion 33 is overlapped in the axial direction.
In addition, the teeth portion 33 of the processing blade 30 for being configured at upside in the processing blade 30 that processing blade group 39 is included
The teeth portion 33 of the processing blade 30 for being configured at upside in the processing blade 30 for being included with other processing blade groups 39 is in axial direction
Upper overlapping.That is, the teeth portion 33 of processing blade 30Ab, the teeth portion 33 for processing blade 30Bb, the teeth portion 33 for processing blade 30Cb, processing
The teeth portion 33 of blade 30Db, the teeth portion 33 for processing blade 30Eb, the teeth portion 33 for processing blade 30Fb, the teeth portion for processing blade 30Gb
The teeth portion 33 of 33 and processing blade 30Hb is overlapped in the axial direction.
As described above, axially adjacent processing blade 30 one another, one processing blade 30 teeth portion 33 be configured at
Between the circumferentially adjacent teeth portion 33 of another processing blade 30.Therefore, can will machining interal external gear
The toothed portion of the processing blade of shape, which is casually arranged with, is placed in axially aligned multiple processing blades 30.Compare as a result, in broach tool 10
Also the mutual circumferential interval of teeth portion 33 of a processing blade 30 is capable of increasing in the case where small-sized.Therefore, it is able to suppress
The teeth portion 33 of grinding wheel and axially adjacent processing blade 30 when being processed using flank 36 of the grinding wheel to processing blade 30
Contact.It, according to the present embodiment, also can be in processing blade 30 even if broach tool 10 is more small-sized by the above content
Relief angle θ is suitably set within the scope of the complete cycle of the peripheral side of teeth portion 33.
In the present embodiment, the shape and size for the teeth portion 33 that a processing blade group 39 is included are mutually the same.Cause
This, can will the toothed portion of processing blade of external tooth colyliform of machining interal be casually arranged with and be placed in multiple processing blades 30.As a result,
By being cut using processing blade group 39 multiple processing blades 30 for being included processing object OP, can with using can
The case where processing blade of the external tooth colyliform of machining interal cuts processing object OP similarly to processing object OP into
Row cutting.Furthermore it is possible to which the shape and size for the processing blade 30 for making a processing blade group 39 be included are identical, therefore manufacture
Processing blade 30 is easy to.Two axially adjacent processing blades 30 are staggered respectively in the circumferential each other in processing blade group 39
It processes the half pitch size of the circumferentially adjacent teeth portion 33 of blade 30 and configures.
The teeth portion 33 of the processing blade group 39 for being configured at upside in axially adjacent processing blade group 39 has under
Side observe when be configured at downside processing blade group 39 the nonoverlapping part of teeth portion 33.Here, as shown in fig. 7, broaching work
Tool 10 is that cutting edge 38 is utilized and being inserted in the through hole H being arranged on processing object OP and moving downward from upside
Machining is carried out to cut the inner peripheral surface of through hole H.At this point, multiple processing blades 30 are from the processing sword for being configured at lower side
Portion 30Aa to the processing blade 30Hb for being configured at top side is successively passed through from the upper side to the lower side in through hole H and to through hole H's
Inner peripheral surface carries out machining.
Therefore, the processing blade group for having with being configured at downside by being configured at the teeth portion 33 of the processing blade group 39 of upside
39 teeth portion 33 part nonoverlapping in the axial direction, can be in 30 pairs of processing blade perforations of the processing blade group 39 on the downside of utilization
The inner peripheral surface of hole H further utilizes the processing blade 30 of the processing blade group 39 of upside in through hole H after being cut
Circumferential surface is cut.In such manner, it is possible to using axially aligned multiple processing blade groups 39 gradually to the inner peripheral surface of through hole H into
Row cutting can reduce the processing burden of each processing blade 30.The processing blade 30 of present embodiment is to cut so respectively
Remove at least part of processing blade substantially functioned of processing object OP.
In addition, in the present embodiment, as described above, can will machining interal external tooth colyliform processing blade
Toothed portion, which is casually arranged with, is placed in axially aligned multiple processing blades 30, therefore compared with existing processing blade, a processing sword
The quantity of teeth portion 33 possessed by portion 30 is few.It is right from each teeth portion 33 when cutting processing object OP to be easy to increase as a result,
The pressure that processing object OP applies, teeth portion 33 easy to use cut processing object OP.Therefore, according to the present embodiment,
The axial power that broach tool 10 is applied when can reduce machining.
As shown in fig. 6, in the present embodiment, the processing for being configured at upside in axially adjacent processing blade group 39
Blade group 39 is that the circumferential size of the teeth portion 33 of processing blade group 39 of the circumferential size of teeth portion 33 than being configured at downside is big
Processing blade group 39 and teeth portion 33 radial outer end than be configured at downside processing blade group 39 teeth portion 33 diameter it is outside
At least one party of the end in the processing blade group 39 of radial outside.Thereby, it is possible to divide processing burden radially and circumferentially
Processing object OP is cut while dissipating.
In the present embodiment, in axially adjacent at least one set of processing blade group 39, it is configured at adding for upside
The circumferential size of the teeth portion 33 of work blade group 39 is greater than the circumferential ruler for being configured at the teeth portion 33 of processing blade group 39 of downside
It is very little.In addition, in the present embodiment, in axially adjacent at least one set of processing blade group 39, being configured at adding for upside
The radial outer end of the teeth portion 33 of work blade group 39 is located at the radial outer end of the teeth portion 33 of the processing blade group 39 than being configured at downside
By the position of radial outside.
The circumferential size of teeth portion 33 is different according to the radial position of teeth portion 33, therefore the circumferential size of teeth portion 33
Compare is carried out in identical radial position.That is, in the present specification, " the circumferential size of teeth portion is big " includes following feelings
Condition: when circumferential size of the identical radial position to teeth portion is compared, in the arbitrary radial position of teeth portion, teeth portion
Circumferential size it is big.
Processing blade 30Ba, Bb that processing blade group 39B is included is compared to the processing blade group 39A institute for being configured at downside
The circumferential size of processing blade 30Aa, the Ab for including, teeth portion 33 are big, and the radial outer end of teeth portion 33 more leans on radial outside.
Processing blade 30Ca, Cb that processing blade group 39C is included adds compared to what the processing blade group 39B for being configured at downside was included
The circumferential size of work blade 30Ba, Bb, teeth portion 33 are big, and the radial outer end of teeth portion 33 more leans on radial outside.Process blade
The radial outer end of the teeth portion 33 of processing blade 30Da, Db that group 39D is included is located at the processing blade group 39C than being configured at downside
The radial outer end of the teeth portion 33 of processing blade 30Ca, Cb for being included leans on the position of radial outside.Process the tooth of blade 30Da, Db
The circumferential size in portion 33 is the circumferential size for the teeth portion 33 for processing blade 30Ca, Cb or less.
The radial outer end of the teeth portion 33 of processing blade 30Ea, Eb that processing blade group 39E is included is located at than being configured at down
The radial outer end of the teeth portion 33 of processing blade 30Da, Db that the processing blade group 39D of side is included leans on the position of radial outside.Add
The circumferential size of the teeth portion 33 of work blade 30Ea, Eb is the circumferential size for the teeth portion 33 for processing blade 30Da, Db or less.Add
The radial outer end of the teeth portion 33 of processing blade 30Fa, Fb that work blade group 39F is included is located at the processing sword than being configured at downside
The radial outer end of the teeth portion 33 of processing blade 30Ea, Eb that portion group 39E is included leans on the position of radial outside.Process blade
The circumferential size of the teeth portion 33 of 30Fa, Fb is the circumferential size for the teeth portion 33 for processing blade 30Ea, Eb or less.
The radial outer end of the teeth portion 33 of processing blade 30Ga, Gb that processing blade group 39G is included is located at than being configured at down
The radial outer end of the teeth portion 33 of processing blade 30Fa, Fb that the processing blade group 39F of side is included leans on the position of radial outside.Add
The circumferential size of the teeth portion 33 of work blade 30Ga, Gb is the circumferential size for the teeth portion 33 for processing blade 30Fa, Fb or less.Add
The position of the radial outer end of the teeth portion 33 of work blade 30Ga, Gb is in multiple processing blades 30 near radial outside.
The circumferential size ratio of the teeth portion 33 of processing blade 30Ha, Hb that processing blade group 39H is included is configured at downside
Processing blade group 39G processing blade 30Ga, Gb for being included teeth portion 33 circumferential size it is big.Process blade 30Ha, Hb
Teeth portion 33 circumferential size in multiple processing blades 30 maximum.Process the radial outer end of the teeth portion 33 of blade 30Ha, Hb
The position of radially inner side is leaned on positioned at the radial outer end of the teeth portion 33 than processing blade 30Ga, Gb.That is, in multiple processing blade groups 39
Configuration the processing blade group 39 than the position on the lower processing blade group 39H at least one processing blade group 39 teeth portion
33 radial outer end is located at the position that radial outside is leaned on than the radial outer end of the processing blade group 39H teeth portion 33 for being included.
Therefore, radially, finish cutting processing is carried out by the processing blade group 39 other than processing blade group 39H.As a result, can
Enough reduce finally bears the processing of the processing object OP processing blade group 39H cut.Therefore, according to the present embodiment,
The processing blade group 39H for finally cutting processing object OP is able to suppress to be lost.Thereby, it is possible to reduce to processing blade group
The replacement frequency of frequency and broach tool 10 that 39H is polished again, can reduce and carry out processing system using broach tool 10
The production cost for the product made.
On the other hand, in the circumferential, finish cutting processing is carried out using processing blade group 39H.It is manufactured by broach tool 10
The side of the circumferential two sides of the teeth portion of internal gear with and the teeth portion of external gear of internal gear engagement contact.Therefore mutual in gear
In engagement, the precision of the side of the circumferential two sides of the teeth portion of internal gear is critically important.Therefore, by finally utilizing processing blade group
39H carries out the finish cutting processing in circumferential direction, is easy to the side of the accurately circumferential two sides of the teeth portion of machining interal, can make
The mutual engagement of gear is smooth.
In addition, according to the present embodiment, the teeth portion 33 of the processing blade group 39G adjacent with the processing downside of blade group 39H
The position of radial outer end be located in multiple processing blades 30 near the position of radial outside, therefore radially, by processing
Blade group 39G carries out finish cutting processing.Finally by processing blade group 39G and processing blade group 39H, the two carry out radial direction as a result,
Finishing and circumferential finishing.Thus, for example, with including by other between radial finishing and the finishing of circumferential direction
The case where cutting process that processing blade carries out, is compared, and is easy to make the finishing precision in all directions to improve.Thus, it is easy in week
To the machining accuracy for the teeth portion for improving manufactured internal gear with radial both sides.In the present embodiment, process blade group 39H's
The radial outer end of teeth portion 33 is located at the position that radial outside is leaned on than the radial outer end for the teeth portion 33 for processing blade group 39F.
In axially adjacent processing blade group 39, it is configured at the circumferential direction of the teeth portion 33 of the processing blade group 39 of upside
Processing blade group 39 of the size than being configured at downside teeth portion 33 circumferential size it is big in the case where, teeth portion 33 it is circumferential
The incrementss of size are bigger than the circumferential dimensional tolerance of teeth portion 33.Therefore, by producing mistake using with circumferential size
After the processing blade group 39 of the teeth portion 33 of difference cuts processing object OP, using the circumferential size of teeth portion 33 than that should add
The big processing blade group 39 of work blade group 39 cuts processing object OP, so as to eliminate because of error caused by it is circumferential
Deviation.Therefore, it is able to suppress the circumferential error accumulation of the machining carried out by each processing blade group 39, it can be in the circumferential
Improve machining accuracy.
Specifically, from processing blade 30Ab to the incrementss DC1 of the circumferential size of the teeth portion 33 of processing blade 30Bb,
From processing blade 30Bb to the incrementss DC2 of the circumferential size of the teeth portion 33 of processing blade 30Cb and from processing blade
The incrementss DC3 of the circumferential size of the teeth portion 33 of 30Gb to processing blade 30Hb is greater than the circumferential dimensional tolerance of teeth portion 33.
In Fig. 6, incrementss DC1, DC2, DC3 are mutually roughly the same.As an example, incrementss DC1, DC2, DC3 is 0.01mm or more
And the left and right 0.1mm or less.As an example, the circumferential dimensional tolerance of teeth portion 33 is ± 0.005mm or more and ± 0.01mm
Left and right below.
The incrementss phase of incrementss DC1 and the circumferential size from processing blade 30Aa to the teeth portion 33 for processing blade 30Ba
Together.Incrementss DC2 is identical as from processing blade 30Ba to the circumferential incrementss of size of teeth portion 33 of processing blade 30Ca.Increase
Dosage DC3 is identical as from processing blade 30Ga to the circumferential incrementss of size of teeth portion 33 of processing blade 30Ha.
In axially adjacent processing blade group 39, it is configured at the radial direction of the teeth portion 33 of the processing blade group 39 of upside
In the case that the radial outer end that outer end is located at the teeth portion 33 of the processing blade group 39 than being configured at downside leans on the position of radial outside,
It is configured at the radial outer end and the teeth portion 33 for the processing blade group 39 for being configured at downside of the teeth portion 33 of the processing blade group 39 of upside
Radial outer end between radial distance be greater than the radial dimensional tolerance of teeth portion 33.Therefore, by radial using having
After the processing blade group 39 that size produces the teeth portion 33 of error cuts processing object OP, the radial direction of teeth portion 33 is used
Outer end be located at the radial outer end of the teeth portion 33 than the processing blade group 39 by the position of radial outside processing blade group 39 to adding
Work object OP is cut, so as to eliminate because of error caused by radial deviation.Therefore, it is able to suppress by each processing blade
Group 39 carries out the radial error accumulation of machining, and can improve machining accuracy radially.
Specifically, the mutual distance DR1 of radial outer end of the teeth portion 33 of axially adjacent each processing blade group 39 is extremely
DR6 is bigger than the radial dimensional tolerance of teeth portion 33.Distance DR1 is the radial outer end for the teeth portion 33 for processing blade 30Aa, Ab and adds
Radial distance between the radial outer end of the teeth portion 33 of work blade 30Ba, Bb.Distance DR2 is the tooth for processing blade 30Ba, Bb
The radial outer end in portion 33 is at a distance from the radial direction between the radial outer end of the teeth portion 33 of processing blade 30Ca, Cb.Distance DR3 is to add
Radial direction between the radial outer end of the teeth portion 33 of the radial outer end and processing blade 30Da, Db of the teeth portion 33 of work blade 30Ca, Cb
Distance.Distance DR4 is the radial outer end for the teeth portion 33 for processing blade 30Da, Db and the teeth portion 33 of processing blade 30Ea, Eb
Radial distance between radial outer end.Distance DR5 is the radial outer end and processing blade for the teeth portion 33 for processing blade 30Ea, Eb
Radial distance between the radial outer end of the teeth portion 33 of 30Fa, Fb.Distance DR6 is the teeth portion 33 for processing blade 30Fa, Fb
Radial outer end is at a distance from the radial direction between the radial outer end of the teeth portion 33 of processing blade 30Ga, Gb.
In the present embodiment, distance DR2, distance DR3 and distance DR5 are identical.Distance DR1 ratio distance DR2, distance
DR3 and distance DR5 are small.Distance DR4 ratio distance DR3 and distance DR5 is big.Distance DR6 ratio distance DR1 is small.That is, axially adjacent
Processing blade group 39 between teeth portion 33 radial outer end radial position variable quantity processing blade group 39A to plus
Identical or increase between work blade group 39E reduces in processing blade group 39E between processing blade group 39G.
As shown in figure 4, the outer diameter D of processing blade 30 is the radial outer end for centered on central axis J and passing through teeth portion 33
Round C diameter.The outer diameter D of blade 30 is processed according to processing blade 30Aa, Ab, processing blade 30Ba, Bb, processing blade
30Ca, Cb, processing blade 30Da, Db, processing blade 30Ea, Eb, processing blade 30Fa, Fb, the sequence for processing blade 30Ga, Gb
Increase.The outer diameter D for processing blade 30Ha, Hb is smaller than processing blade 30Ga, Gb and bigger than processing blade 30Fa, Fb.As one
Example, each outer diameter D for processing blade 30 are 20mm or less.The variation of outer diameter D between axially adjacent processing blade 30
Amount changes in the same manner as the variable quantity of the radial position of the radial outer end of above-mentioned teeth portion 33.
In the present embodiment, multiple processing blades 30 are components seperated each other.Therefore, can produce respectively it is more
After a processing blade 30, multiple processing blades 30 are axially linked up and assemble broach tool 10.Example as a result,
Such as, it in the case where being processed using grinding wheel to flank 36, is processed before blade 30 is processed in assembling, is thus obtained
Flank 36 with relief angle θ appropriate, and grinding wheel will not process 30 Fa Sheng Gan Wataru of blade with other.In addition, say, by
It is component seperated each other in processing blade 30, there is no need to use grinding wheel to process flank 36.For example, can pass through
Wire-cut Electrical Discharge Machining manufactures processing blade 30 from plate parts cutting according to each flank 36.Therefore, according to this implementation
Mode also can be within the scope of the complete cycle of the peripheral side of the teeth portion 33 of processing blade 30 even if broach tool 10 is more small-sized
Relief angle θ is more suitably set.In the present embodiment, multiple processing blades 30 are single component respectively.
In the present specification, it is 20mm broaching work below that " more small-sized broach tool ", which includes the outer diameter of processing blade,
Tool, distance L1 shown in fig. 6 be the teeth portion 33 of 2mm broach tool below, axially adjacent processing blade 30 lower end that
Axial distance between this is 10mm broach tool below etc..
Distance L1 is edge when from the processing blade group 39 for being configured at top side in processing blades 30 multiple from downside
It is tangent with the part of another 33 side of teeth portion when from downside in the mutual each teeth portion 33 of circumferentially-adjacent teeth portion 33
Point of contact TP1, TP2 in tangent line, tangent with imaginary line CL angulation φ the smallest tangent line TL1, TL2 and teeth portion 33 is each other
The distance between.Imaginary line CL is to link up the circumferentially adjacent mutual circumferential center of teeth portion 33 and central axis J
Line.When tangent tangent line is from downside with teeth portion 33 with the radially outer edge of rake face 35 i.e. cutting edge 38 is tangent cuts
Line.
In the example shown in Fig. 6, tangent line TL1 is that 33 side of another party's teeth portion in the teeth portion 33 with the left side of Fig. 6 is i.e. right
The smallest tangent line of angle φ in the tangent tangent line in the part of side.Tangent line TL2 is another party in the teeth portion 33 with the right side of Fig. 6
33 side of teeth portion is the smallest tangent line of angle φ in the tangent tangent line in the part in left side.
In addition, being particularly present following problems in existing broach tool: the tangent line phase small with above-mentioned angle φ
The point of contact for the teeth portion 33 cut more is difficult to that relief angle θ is arranged.In contrast, according to the present embodiment, at the smallest point of contact of angle φ
Also it can be suitably set relief angle θ at TP1, TP2, therefore can suitably be set within the scope of the complete cycle of the peripheral side of teeth portion 33
Postpone angle θ.
Further, since multiple processing blades 30 are components seperated each other, therefore one in multiple processing blades 30
In the case that loss has occurred in the processing blade 30 divided, the processing blade 30 of a part can be only replaced.It is therefore not necessary at one
The processing blade 30 divided replaces 10 entirety of broach tool in the case where loss has occurred, can reduce and carried out using broach tool 10
The production cost of the product of processing and manufacturing.
In addition, for example, being cycloidal tooth profile or trochoidal curve in the tooth form of teeth portion in the internal gear and external gear being engaged with each other
In the case where tooth form, compared with the case where tooth form is involute profile, week that the teeth portion of internal gear is contacted with the teeth portion of external gear
Sideways range is big.Therefore, tooth form be cycloidal tooth profile or trochoidal curve tooth form in the case where, teeth portion peripheral side it is whole
Machining accuracy height is critically important in all ranges.
In contrast, as present embodiment, by using appropriate within the scope of the complete cycle of the peripheral side of teeth portion 33
Ground is provided with the broach tool 10 of relief angle θ, can within the scope of complete cycle the accurately peripheral side of the teeth portion of machining interal.
Therefore, the effect of relief angle θ can be suitably set within the scope of the complete cycle of the peripheral side of above-mentioned teeth portion 33 to processing object
The case where tooth form of the teeth portion of OP is cycloidal tooth profile or trochoidal curve tooth form is particularly useful.
In addition, in the present embodiment, rake face 35 is a part with the lower surface of axially vertical processing blade 30.
Therefore, processing blade 30 is manufactured by being cut using Wire-cut Electrical Discharge Machining etc. to plate component, it can be by plate component
Plate face be used as rake face 35.The plate component relatively high by using the plane precision of plate face as a result, can be easy and high-precision
Degree ground production rake face 35.Thereby, it is possible to accurately make cutting edge 38, the cutting ability of broach tool 10 can be improved.
Furthermore it is possible to be polished, rake face 35 to cutting edge and the lower surface to flat processing blade 30 polishes
38 are polished, therefore carrying out polishing again to cutting edge 38 in the case where loss has occurred in cutting edge 38 is easily.
As shown in figure 3, processing blade 30 is respectively provided with along the first through hole 34a axially through processing blade 30 and along axis
To multiple second through hole 34b of perforation processing blade 30.The shape of first through hole 34a observed from upside is with center
Circular shape centered on axis J.The shape of second through hole 34b observed from upside is circular shape.Second through hole
Internal diameter of the internal diameter of 34b less than the first through hole 34a.In the present embodiment, the second through hole 34b is in each processing blade 30
In be each provided with two.Two the second through hole 34b are configured in the radial outside of the first through hole 34a across central axis J
In reciprocal side.Upper surface upper opening of the first through hole 34a and the second through hole 34b in tapering 31.
Preceding knife portion 40 is in cylindric centered on central axis J.As shown in Figure 1, multiple preceding knife portions 40 are respectively adding respectively
The downside of work blade 30 is connected with the lower end of each processing blade 30.Before quantity identical with the processing quantity of blade 30
Knife portion 40 is provided with eight in the present embodiment.Being configured at other than the preceding knife portion 40 of lower side in multiple preceding knife portions 40
Axially adjacent processing blade 30 is linked up each other between axially adjacent processing blade 30 in preceding knife portion 40.
As shown in Fig. 2, the outer diameter in preceding knife portion 40 is less than, axially adjacent processing blade 30 is respective to be provided with teeth portion 33
Part, i.e. main part 32 outer diameter.Therefore, it is provided between axially adjacent processing blade 30 to radially inner side
Recess keeps away the portion of moving back 37.Thereby, it is possible to make utilizing the processing blade 30 being connected with the upside in preceding knife portion 40 as shown in FIG. 7
The chip MS generated when cutting the inner peripheral surface of the through hole H of processing object OP keeps away to fall back on and keep away in the portion of moving back 37.Therefore, can
The chip MS when carrying out machining to processing object OP using broach tool 10 is inhibited to get lodged in broach tool 10 and through hole H's
Between inner peripheral surface, broach tool 10 easy to use carries out machining.
The portion of moving back 37 is kept away in annular shape circumferentially.Keep away the medial surface in the portion of moving back 37 by rake face 35, preceding knife portion 40 it is outer
Circumferential surface and the outer peripheral surface in tapering 31 are constituted.In the present embodiment, due to tapering 31 in outer diameter with from upside towards downside
And the circular cone shape to become larger, therefore be easy to expand in the downside of rake face 35 to keep away in the portion of moving back 37, being easy to, which keeps out of the way chip MS, keeps away
It moves back in portion 37.In addition, be easy to extracted from through hole H to downside keep away the portion 37 of moving back when by chip MS along tapering 31 from keeping away the portion of moving back 37
Interior removal.
As shown in Fig. 2, the outer diameter in preceding knife portion 40 becomes larger in the upper end in preceding knife portion 40 towards upside.It is easy to make as a result,
It is scooped up and kept out of the way the chip MS kept away in the portion of moving back 37 and roll and be guided to downside as shown in FIG. 7 by rake face 35.Therefore,
Being easy to, which keeps out of the way chip MS, keeps away in the portion of moving back 37, it is easier to carry out machining using broach tool 10.
The outer diameter of the lower end in preceding knife portion 40 is the outer diameter, i.e. of the upper end for the processing blade 30 being connected with the downside in preceding knife portion 40
It is more than the outer diameter of the upper end in tapering 31.Therefore, it is able to suppress the chip MS that downside is directed into along the outer peripheral surface in preceding knife portion 40
The boundary part in knife portion 40 and the processing blade 30 of downside before being sandwiched in.Be easy to as a result, from keep away in the portion of moving back 37 remove chip MS.
As shown in figure 3, preceding knife portion 40 is the component seperated with processing blade 30.That is, multiple processing blades 30 with it is multiple before
Knife portion 40 is component seperated each other.Therefore, plate component can be cut as described above to manufacture processing blade 30 simultaneously
And similarly plate component is cut to manufacture preceding knife portion 40.Thereby, it is possible to easily fabricated processing blade 30 and preceding knife portions
40, and be readily able to keep out of the way chip MS using preceding knife portion 40.In addition, for example, due to multiple preceding knife portions 40 shape and ruler
It is very little can also be identical, therefore can be easily in the case where knife portion 40 before being manufactured according to identical shape and identical size
Knife portion 40 before manufacturing.In the present embodiment, for example, the shape and size in multiple preceding knife portions 40 are mutually the same.
Further, since processing blade 30 and preceding knife portion 40 are components seperated each other, therefore can make to process blade 30
Material and the material in preceding knife portion 40 are different from each other.Thereby, it is possible to manufacture processing blade 30 using material appropriate respectively with before
Knife portion 40.Specifically, can easily be made by the material for the processing blade 30 processed using the material for comparing hard
Machining is carried out with broach tool 10.In addition, can reduce drawing using the material for comparing low price by the material in preceding knife portion 40
Cut the manufacturing cost of tool 10.
As an example, the material as processing blade 30, can enumerate the high speed tool steels such as SKH51 steel (JIS G
4403:2015) and superhard alloy.As the material in preceding knife portion 40, the mechanical realizations carbon steel steel such as S50C (JIS can be enumerated
G 4051:2009) and SUS420.
Preceding knife portion 40 is respectively provided with along the third through hole 41a axially through preceding knife portion 40 and along axially through preceding knife portion 40
Multiple 4th through hole 41b.The shape of third through hole 41a observed from upside is the circle centered on central axis J
Shape shape.The shape of 4th through hole 41b observed from upside is circular shape.The internal diameter of 4th through hole 41b is less than
The internal diameter of three through hole 41a.In the present embodiment, the 4th through hole 41b is each provided with two in each preceding knife portion 40.Two
A 4th through hole 41b is configured at reciprocal side across central axis J in the radial outside of third through hole 41a.
The internal diameter of third through hole 41a is identical as the internal diameter of the first through hole 34a.The internal diameter and the second through hole of 4th through hole 41b
The internal diameter of 34b is identical.
As shown in Figure 1, broach tool 10 also has the axis 21 configured along central axis J.Axis 21 is in axially extend
It is cylindric.Axis 21 links up lower side guide 11, processing department 12, upper side guide 13 and shank 14.Axis 21 passes through
Lower side guide 11, processing department 12, the setting of each section of upper side guide 13 and shank 14 edge axially through through hole
And they are connected to each other.
External thread part is provided on the outer peripheral surface of the upper end of the outer peripheral surface and axis 21 of the lower end of axis 21.15 quilt of nut
It is screwed to the external thread part of the lower end of axis 21.Nut 16 is screwed onto the external thread part of the upper end of axis 21.Side guide is descended as a result,
11, processing department 12, upper side guide 13 and shank 14 are clamped in the axial direction by nut 15 and nut 16 and are fixed on axis 21.
Axis 21 links up the multiple processing blades 30 for constituting processing department 12 and multiple preceding knife portions 40.More specifically,
Multiple processing blades 30 are to pass through the first through hole 34a by axis 21 to be concatenated.Thereby, it is possible to good with axis precision
Mode axially configure each processing blade 30.Therefore, it can be improved the machining accuracy of broach tool 10.
In addition, multiple preceding knife portions 40 are to pass through third through hole 41a by axis 21 to be concatenated.In this way, at this
In embodiment, multiple processing blades 30 and multiple preceding knife portions 40 are that the first through hole 34a and third perforation are passed through by axis 21
Hole 41a and be concatenated.Thereby, it is possible in such a way that axis precision is good along being configured axially multiple processing blades 30 and multiple
Preceding knife portion 40.
In the present embodiment, the material for processing blade 30 and the material of axis 21 are different from each other.Thereby, it is possible to use respectively
Material appropriate processes blade 30 and axis 21 to manufacture.Specifically, the material big using toughness by the material of axis 21, it can
The axis 21 for linking up multiple processing blades 30 and multiple preceding knife portions 40 is set not allow frangibility.As the material of axis 21, such as
The mechanical realizations carbon steel such as S50C steel (JIS G 4051:2009) and SUS420 can be enumerated in the same manner as preceding knife portion 40.Axis
21 material can also be different from the material in preceding knife portion 40.
As shown in figure 3, broach tool 10 also has the rotation prevention portion 50 for inhibiting processing blade 30 to rotate relative to one another.Therefore,
It is able to suppress and is deviated in the circumferential each other as the processing blade 30 of component seperated each other, be able to suppress adding for broach tool 10
Work precision reduces.Rotation prevention portion 50, which has, is each provided with the second multiple through hole 34b, in each preceding knife in each processing blade 30
Portion 40 is each provided with multiple the 4th through hole 41b and multiple pins 22.That is, broach tool 10 also has multiple pins 22.
In the present embodiment, there are two pin 22 is for example arranged.In addition, the second through hole 34b is in each processing blade 30
It is each provided with such as two.In addition, the 4th through hole 41b is each provided with such as two in each preceding knife portion 40.
Pin 22 is cylindric in axially extending.The outer diameter of pin 22 is less than the outer diameter of axis 21.As shown in Figure 1, under pin 22
Lower side guide 11 is fixed at end.Pin 22 is across across multiple the second through hole 34b for processing blades 30.Rotation prevention portion 50 as a result,
It is able to suppress multiple processing blades 30 relative rotation in the circumferential each other.In the present embodiment, rotation prevention portion 50 is to have used
The structure of two through hole 34b and pin 22, therefore can reduce the effort and cost of production rotation prevention portion 50, it can reduce broach tool
10 manufacturing cost.
In addition, in the present embodiment, the outer diameter of pin 22 is less than the outer diameter of axis 21, therefore can make that supply and marketing 22 passes through the
Two through hole 34b are smaller.Thereby, it is possible to inhibit the rigidity for processing blade 30 to reduce.
In addition, pin 22 crosses over the 4th through hole 41b across multiple preceding knife portions 40.That is, in the present embodiment, pin 22 across
More across the second through hole 34b of multiple processing blades 30 and the 4th through hole 41b in multiple preceding knife portions 40.Rotation prevention portion as a result,
50 are able to suppress multiple processing blades 30 and multiple preceding knife portions 40 relative rotation in the circumferential.
In addition, for example, being provided with gap between the inner peripheral surface of the first through hole 34a and the outer peripheral surface of axis 21.Have as a result,
When such as processing blade 30 move the size in gap radially relative to axis 21.For this, for example, in pin 22 and axis 21
The case where radial position of radial position or the first through hole 34a and the second through hole 34b deviates in the range of tolerance
Under, it is inhibited by the inner peripheral surface of the second through hole 34b and the periphery face contact of pin 22 due to the first through hole 34a and axis 21
Between gap caused by processing blade 30 radial movement.Thereby, it is possible to inhibit due to the first through hole 34a and axis 21
Between gap and cause process blade 30 moved radially relative to axis 21.
In addition, for example, smaller simultaneously relative to the tolerance of the radial position of the first through hole 34a in the second through hole 34b
And in the case that pin 22 deviates in the range of tolerance relative to the radial position of axis 21, it is easy to uniquely determine the first through hole
In 34a because the offset in the radial direction of axis 21 caused by gap direction.Therefore, multiple processing blades 30 can be made relative to axis
21 offset is consistent radially, is easy to be aligned each teeth portion 33 accurately in the axial direction.
In the present embodiment, pin 22 is provided with multiple, and the second through hole 34b is also according to each respectively setting of processing blade 30
Have multiple.Therefore, rotation prevention portion 50 can inhibit to process the circumferential direction of blade 30 in circumferential many places according to each processing blade 30
Rotation.
For example, being provided with gap between the inner peripheral surface of the second through hole 34b and the outer peripheral surface of pin 22.As a result, for example, In
In the case where carrying out rotation stop to processing blade 30 using a pin 22 and a second through hole 34b, 30 meeting of blade is processed sometimes
Move the size in gap in the circumferential relative to axis 21.
In contrast, the case where carrying out rotation stop to processing blade 30 using multiple pins 22 and multiple second through hole 34b
Under, for example, respectively multiple second through hole 34b in processing blade 30 have the time-division relative to the circumferential position of the first through hole 34a
Not in tolerance bias internal.Therefore, when multiple pins 22 are each passed through multiple second through hole 34b, because of the second through hole 34b and pin
The circumferential movement of processing blade 30 caused by gap between 22 inhibits the outer peripheral surface and the second through hole 34b of other pins 22
Inner circumferential face contact.Thereby, it is possible to inhibit by the gap between pin 22 and the second through hole 34b process blade 30 relative to
Axis 21 moves in the circumferential.
In addition, for example, comparing in multiple second through hole 34b relative to the tolerance of the circumferential position of the first through hole 34a
In the case that small and multiple pins 22 deviate in the range of tolerance relative to the circumferential position of axis 21, it is easy to uniquely determine
In two through hole 34b because the offset of pin 22 in the circumferential caused by gap direction.Therefore, multiple processing blades 30 can be made
Offset alignment relative to axis 21 is circumferential side, and each teeth portion 33 can be made accurately to be aligned in the axial direction.
The effect of the movement of blade 30 radially and movement circumferentially is processed caused by being able to suppress because of above-mentioned gap
It is also same for preceding knife portion 40.That is, according to the present embodiment, before being able to suppress knife portion 40 due to each gap and radial and
Week moves up.
In the present embodiment, the material for processing blade 30 and the material of pin 22 are different from each other.Thereby, it is possible to use respectively
Material appropriate processes blade 30 and pin 22 to manufacture.Specifically, the material big using toughness by the material of pin 22, it can
The pin 22 for functioning the rotation stop part as multiple processing blades 30 and multiple preceding knife portions 40 does not allow frangibility.As pin 22
Material, for example, can be enumerated in the same manner as preceding knife portion 40 and axis 21 the mechanical realizations carbon steel such as S50C steel (JIS G 4051:
And SUS420 2009).The material of pin 22 can also be different from the material of the material in preceding knife portion 40 and axis 21.The material of pin 22 is for example
It can also be the high speed tool steels such as SKH51 steel (JIS G 4403:2015) in the same manner as processing blade 30, be also possible to surpass
Hard alloy.
The present invention is not limited to above-mentioned embodiments, can also use other structures.In the following description, for it is upper
Identical structure is stated, is omitted the description sometimes through identical label is suitably marked.
Processing blade 30 and preceding knife portion 40 are also possible to a component.Knife portion 40 before can also being not provided with.In addition, multiple add
Work blade 30 may not be component seperated each other.In this case, processing department 12 can have multiple processing blades
One component.The mutual linking method of multiple processing blades 30 is not particularly limited, and for example, it can be weldings etc..Rotation prevention portion
It rotates, is not particularly limited in the circumferential relative to axis 21 as long as 50 are able to suppress processing blade 30.It can also be not provided with
Rotation prevention portion 50.Processing blade 30, preceding knife portion 40, axis 21 and pin 22 are also possible to mutually the same material.Process blade 30
As long as quantity is multiple, it is not particularly limited.
The position for processing the radial outer end of the teeth portion 33 of blade group 39H can also be located at most in multiple processing blade groups 39
By radial outside.It is configured at least one of processing blade group 39 of position than processing blade group 39H on the lower processing sword
The circumferential size of the teeth portion 33 of portion's group 39 can also be greater than the circumferential size of the teeth portion 33 of processing blade group 39H.After in addition,
Angle θ can also change according to the position of flank 36.In addition it is also possible to be led after teeth portion 33 is provided with the cutting edge of a knife or a sword that relief angle θ is 0 °
Edge (JIS B 0175-1996).The radial outer side of straight land is vertical with radial direction.Straight land is in flank 36 and rake face
Flank 36 and rake face 35 are linked up between 35.
In addition, the circumferential maximum processing blade group 39H of size of teeth portion 33 can also be arranged continuously in the axial direction and be set
It is equipped with multiple.According to this structure, even if the processing blade for being configured at lower side in multiple processing blade group 39H can not be utilized
In the case that group 39H finishes the machining of processing object OP, due to being additionally provided with other processing blades in upside
Group 39H, therefore can be improved the reliability of the finishing of machining to processing object OP.In addition, even if for example multiple
In the case that abrasion has occurred in the processing blade group 39H for being configured at lower side in processing blade group 39H, configuration can be also utilized
Other processing blade group 39H in upside carries out the finishing of machining, therefore can reduce processing blade group 39H more
Change frequency.In addition, in this case, about being provided with multiple processing blade group 39H, as long as the circumferential size of teeth portion 33 that
This is identical and is maximum in processing blade 30, and the position of the radial outer end of teeth portion 33 can be than processing blade group
The teeth portion 33 of 39G is different from each other in the range of radially inner side.
In addition, processing blade group 39 included processing blade 30 quantity can also according to each processing blade group 39 and
It is different.In addition, as long as processing blade group 39 at least provided with one, also can be set and not constitute processing blade group 39
Process blade.The processing blade of processing blade group 39 is not constituted for example in external tooth colyliform, is had and the internal tooth as processing object
The teeth portion 33 of the identical quantity of the teeth portion of wheel.
< second embodiment >
As shown in figure 8, rotation prevention portion 150 includes recessed in the processing blade 130 of the broach tool 110 of second embodiment
Portion is radially recessed, the side being set in the outer peripheral surface of axis 121 and the inner peripheral surface of the first through hole 134a；And protrusion,
Its is radially projecting, the another party being set in the outer peripheral surface of axis 121 and the inner peripheral surface of the first through hole 134a.In this embodiment party
In formula, recess portion is the recess portion 134c being recessed from the inner circumferential of the first through hole 134a towards radial outside.Protrusion is from the outer of axis 121
Circumferential surface is to radial outside protrusion 121a outstanding.
Protrusion 121a is chimeric with recess portion 134c.Rotation prevention portion 150 is able to suppress processing blade 130 and exists relative to axis 121 as a result,
It is rotated in circumferential direction.Axis 121 is the single component with protrusion 121a.Therefore, number of components can not be increased rotation prevention portion is constituted
150, it can reduce the manufacturing cost of broach tool 110.
In addition, for example, it is also possible to use with flowering structure: right radially with recess portion 134c in the outer peripheral surface of axis 121
The position set is provided with the second recess portion being recessed to radially inner side, keeps key member chimeric with recess portion 134c and the second recess portion.At this
In the case of, key member, which is equivalent to, " is set to the outer peripheral surface of axis and another party in the inner peripheral surface of the first through hole and radially
Protrusion outstanding ".In addition, recess portion is also possible to the recess portion being recessed from the periphery of axis 121 towards radially inner side, protrusion is also possible to
From the inner circumferential of the first through hole 134a towards radially inner side protrusion outstanding.
< third embodiment >
As shown in figure 9, the broach tool 210 of present embodiment have processing blade group 239A to processing blade group 239I this
Nine are used as multiple processing blade groups 239.Process blade group 239A to processing blade group 239I from downside towards upside and successively
It is arranged.The size for processing a part of blade group 239A to processing blade group 239I is different from each other, but shape having the same
Shape.In the following description, not intended distinction processing blade group 239A to processing blade group 239I in the case where, referred to as plus
Work blade group 239.Each processing blade group 239 processes blade there are two separately including in the same manner as above embodiment.
The processing blade that processing blade group 239 is included is respectively provided with to radial outside multiple teeth portion 233 outstanding.It is multiple
Teeth portion 233 circumferentially equally spaced configures within the scope of complete cycle according to each processing blade.In the present embodiment, teeth portion
233 tooth form is involute profile, different from above-mentioned each embodiment.It is located at the processing blade group 239 of upside, teeth portion
233 radial outer end more leans on radial outside.That is, the radial outer end of teeth portion 233 is according to processing blade group 239A, processing blade group
239B, processing blade group 239C, processing blade group 239D, processing blade group 239E, processing blade group 239F, processing blade group
239G, it processing blade group 239H, processes the sequence of blade group 239I and is located at radial outside.
In processing blade group 239A into processing blade group 239G, the circumferential size of teeth portion 233 is identical.Process blade group
Circumferential ruler of the circumferential size of the teeth portion 233 of 239H than the teeth portion 233 of processing blade group 239A to processing blade group 239G
It is very little big.Process the circumferential size of teeth portion 233 of the circumferential size of the teeth portion 233 of blade group 239I than processing blade group 239H
Greatly.Processing the circumferential size of the teeth portion 233 of blade group 239I is maximum in multiple processing blade groups 239.< has made
An example > of the speed reducer for the internal gear made
The internal gear G1 of speed reducer GR shown in Fig. 10 is first in the broach tool using above-mentioned each embodiment
The broach tool of embodiment and second embodiment and an example of internal gear manufactured.Speed reducer GR has internal gear G1, outer
Gear G2 and output block OM.Internal gear G1 is in the annular shape centered on the rotation axis O1 of motor drive shaft S.In internal gear G1
Inner peripheral surface on be provided with multiple teeth portion T1 of circumferential array along rotation axis O1.Internal gear G1 is fixed on the case of speed reducer GR
Body.
External gear G2 is in the annular shape chimeric with the outer peripheral surface of eccentric part Se of motor drive shaft S.The eccentric axis of eccentric part Se
O2 is eccentric relative to the rotation axis O1 of motor drive shaft S.The inner peripheral surface of external gear G2 is functioned as sliding bearing, can be opposite
It is relatively rotated in eccentric part Se.Be provided on the outer peripheral surface of external gear G2 along eccentric axis O2 circumferential array it is multiple
Teeth portion T2.The a part of teeth portion T2 with teeth portion T1 in the periphery of external gear G2 engages.The tooth form of teeth portion T1 and the tooth form of teeth portion T2
For example, cycloidal tooth profile.
External gear G2 has multiple hole PH axially through external gear G2 along eccentric axis O2.Multiple hole PH are along bias
The circumferential direction of axes O 2 equally spaced configures within the scope of complete cycle.Output block OM has the multiple fulcrum post P being inserted in the PH of hole.
The outer diameter of fulcrum post P is less than the internal diameter of hole PH.
When motor drive shaft S is rotated around rotation axis O1, eccentric part Se is revolved centered on rotation axis O1.By
This, external gear G2 swing while the position of the inner peripheral surface of hole PH and the outer peripheral surface inscribe of fulcrum post P changes, teeth portion T1
The position engaged with teeth portion T2 changes in the circumferential direction of rotation axis O1.Therefore, internal gear G1 and external gear G2 relative rotation.In
In Figure 10, internal gear G1 is fixed on the cabinet of speed reducer GR, therefore external gear G2 is rotated.When external gear G2 rotation, warp
By hole PH and fulcrum post P, output block OM rotation.The rotation of output block OM is decelerated relative to the rotation of motor drive shaft S.
According to the broach tool of above-mentioned first embodiment and second embodiment, such speed reducer GR can be manufactured
Internal gear G1.More specifically, by using the broach tool of above-mentioned first embodiment and second embodiment, use
Machining makes multiple teeth portion T1, can produce internal gear G1.
In addition, the purposes of the broach tool of above-mentioned each embodiment is not particularly limited.In addition, above-mentioned each structure energy
It is enough appropriately combined in mutual reconcilable range.
Label declaration
10,110,210: broach tool；21,121: axis；22: pin；30,130,30Aa,30Ba,30Ca,30Da,30Ea,
30Fa, 30Ga, 30Ha, 30Ab, 30Bb, 30Cb, 30Db, 30Eb, 30Fb, 30Gb, 30Hb: processing blade；33,233: teeth portion；
34a, 134a: the first through hole；34b: the second through hole；40: preceding knife portion；39,39A,39B,39C,39D,39E,39F,39G,
39H, 239,239A, 239B, 239C, 239D, 239E, 239F, 239G, 239H, 239I: processing blade group；J: central axis.
Claims (9)
1. a kind of broach tool, wherein
The broach tool has the multiple processing blades arranged along central axis extended in the vertical direction,
The processing blade is respectively provided with to radial outside multiple teeth portion outstanding,
Multiple teeth portion are circumferentially arranged according to each processing blade,
In the axially adjacent processing blade, when along end on observation, the teeth portion configuration of a processing blade
Between the circumferentially adjacent teeth portion of another processing blade,
The processing blade in each processing blade, other than the teeth portion and the axially adjacent processing blade
At least one of described in processing blade the teeth portion be overlapped in the axial direction.
2. broach tool according to claim 1, wherein
Multiple processing blades are components seperated each other.
3. broach tool according to claim 1 or 2, wherein
Described in a part axially continuously arranged contained in multiple processing blades at least provided with one
The processing blade group of blade is processed,
When along end on observation, the teeth portion that a processing blade group is included circumferentially equally spaced is configured,
The shape and size for the teeth portion that one processing blade group is included are mutually the same.
4. broach tool according to claim 3, wherein
Multiple processing blade groups are provided with,
In axially adjacent at least one set of processing blade group,
The radial outer end for being configured at the teeth portion of the processing blade group of upside is located at than the processing on the downside of being configured at
The radial outer end of the teeth portion of blade group leans on the position of radial outside,
It is configured at the radial outer end of the teeth portion of the processing blade group of upside and the processing blade for being configured at downside
Radial distance between the radial outer end of the teeth portion of group is bigger than the radial dimensional tolerance of the teeth portion.
5. according to claim 1 to broach tool described in any one in 4, wherein
The broach tool also has the axis configured along the central axis,
The processing blade is respectively provided with along the first through hole axially through the processing blade,
Multiple processing blades are passed through in first through hole by the axis and are linked up.
6. broach tool according to claim 5, wherein
The broach tool also has the multiple pins axially extended,
The processing blade is respectively provided with along multiple second through holes axially through the processing blade,
The pin passes through second through hole of multiple processing blades across ground.
7. broach tool according to claim 6, wherein
The material and the material of the axis and the material of the pin of the processing blade are different from each other.
8. broach tool according to claim 6 or 7, wherein
The outer diameter of the pin is smaller than the outer diameter of the axis.
9. according to claim 1 to broach tool described in any one in 8, wherein
The broach tool also has preceding knife portion, which will be along axis between the axially adjacent processing blade
It is joined to one another to the adjacent processing blade,
The outer diameter in the preceding knife portion part for being provided with the teeth portion more respective than the axially adjacent processing blade it is outer
Diameter is small,
The preceding knife portion is the component seperated with the processing blade.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-061477 | 2017-03-27 | ||
| JP2017061477 | 2017-03-27 | ||
| PCT/JP2018/007155 WO2018180119A1 (en) | 2017-03-27 | 2018-02-27 | Broaching tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110461521A true CN110461521A (en) | 2019-11-15 |
Family
ID=63675320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880022090.0A Pending CN110461521A (en) | 2017-03-27 | 2018-02-27 | Broach tool |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2018180119A1 (en) |
| CN (1) | CN110461521A (en) |
| WO (1) | WO2018180119A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182619A (en) * | 2021-04-27 | 2021-07-30 | 江苏大学 | Detachable multi-layer-edge turning tooth cutter with staggered cutting edges and assembling method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940227A (en) * | 2019-04-18 | 2019-06-28 | 东莞市鑫拓智能机械科技有限公司 | It is a kind of for processing the cutter of harmonic speed reducer |
| KR102498608B1 (en) * | 2020-09-14 | 2023-02-10 | (주)경일에프비 | serration broach |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228329A (en) * | 1986-03-04 | 1987-10-07 | Hidetoshi Yokoi | Manufacture for laminated broach |
| JPH03184714A (en) * | 1989-12-08 | 1991-08-12 | Fuji Technica Inc | Structure of broach and grinding method thereof |
| DE9416221U1 (en) * | 1994-10-10 | 1995-04-06 | Batschari, Constantin, 61118 Bad Vilbel | Broaching tool |
| JPH08150512A (en) * | 1994-11-25 | 1996-06-11 | Hosei Tekko Kk | Cutting device and broach blade unit |
| CN102015166A (en) * | 2008-08-05 | 2011-04-13 | 汉塞尔股份公司 | Method and tool for producing a surface having a predetermined roughness |
| CN103551657A (en) * | 2013-10-23 | 2014-02-05 | 天津市中环天佳电子有限公司 | Aluminum pipe surface furrowing device and method |
-
2018
- 2018-02-27 WO PCT/JP2018/007155 patent/WO2018180119A1/en active Application Filing
- 2018-02-27 JP JP2019509018A patent/JPWO2018180119A1/en active Pending
- 2018-02-27 CN CN201880022090.0A patent/CN110461521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228329A (en) * | 1986-03-04 | 1987-10-07 | Hidetoshi Yokoi | Manufacture for laminated broach |
| JPH03184714A (en) * | 1989-12-08 | 1991-08-12 | Fuji Technica Inc | Structure of broach and grinding method thereof |
| DE9416221U1 (en) * | 1994-10-10 | 1995-04-06 | Batschari, Constantin, 61118 Bad Vilbel | Broaching tool |
| JPH08150512A (en) * | 1994-11-25 | 1996-06-11 | Hosei Tekko Kk | Cutting device and broach blade unit |
| CN102015166A (en) * | 2008-08-05 | 2011-04-13 | 汉塞尔股份公司 | Method and tool for producing a surface having a predetermined roughness |
| CN103551657A (en) * | 2013-10-23 | 2014-02-05 | 天津市中环天佳电子有限公司 | Aluminum pipe surface furrowing device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182619A (en) * | 2021-04-27 | 2021-07-30 | 江苏大学 | Detachable multi-layer-edge turning tooth cutter with staggered cutting edges and assembling method |
| CN113182619B (en) * | 2021-04-27 | 2024-05-10 | 江苏大学 | Detachable multi-blade turning cutter with staggered blades and assembling method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018180119A1 (en) | 2018-10-04 |
| JPWO2018180119A1 (en) | 2020-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6022798B2 (en) | Milling tools and milling insert kits | |
| CN110461521A (en) | Broach tool | |
| CN102632303B (en) | For the milling cutter of gear milling | |
| CN102632302B (en) | Cutting insert for a milling tool | |
| JP6128997B2 (en) | Milling insert | |
| EP2433735B1 (en) | A gear milling cutter as well as a set of gear milling cutter inserts therefor | |
| US8038370B2 (en) | Milling cutter tool for chip removing machining, as well as a cutting body therefor | |
| US20140010606A1 (en) | Milling insert and a milling tool | |
| KR20120140634A (en) | Robust method for skiving and corresponding apparatus comprising a skiving tool | |
| US20100278603A1 (en) | Multi-Piece Drill Head and Drill Including the Same | |
| US8882414B2 (en) | Method and system for milling a bevel gear tooth system in a continuous miling process | |
| KR20090068177A (en) | A milling cutter tool for chip removing machining, as well as a cutting body and a basic body therefor | |
| CN108243609A (en) | Tool is scraped in rotation | |
| JP2015013367A (en) | Cutting insert and milling tool | |
| CN105397204A (en) | Cutting Insert And Milling Tool | |
| US10105763B2 (en) | Drilling milling tool and methods for producing a through-hole | |
| CN110461522A (en) | Broach tool | |
| CN109475954B (en) | Wheel-shaped gear cutting tool | |
| JP6330443B2 (en) | Skiving cutter and gear | |
| CN110461520A (en) | Broach tool | |
| CN110475640A (en) | Broach tool | |
| CN110494245A (en) | Broach tool | |
| TW201642980A (en) | Reaming cutter | |
| CS227656B2 (en) | Multi-part hob | |
| JP2014151417A (en) | Throw-away type hob |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191115 |