EP0785853A1 - Broaching tool - Google Patents
Broaching toolInfo
- Publication number
- EP0785853A1 EP0785853A1 EP95934665A EP95934665A EP0785853A1 EP 0785853 A1 EP0785853 A1 EP 0785853A1 EP 95934665 A EP95934665 A EP 95934665A EP 95934665 A EP95934665 A EP 95934665A EP 0785853 A1 EP0785853 A1 EP 0785853A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- projections
- disks
- broaching tool
- cutting
- segment
- 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.)
- Withdrawn
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
- B23D43/06—Broaching tools for cutting by rotational movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
Definitions
- the invention relates to a broaching tool, in particular for broaching or cutting slots, comprising a plurality of spaced disks rotatable about a common axis with circumferential segment-like cutting projections.
- Cutting tools are known from the prior art which have a plurality of mutually spaced, hard metal milling disks with segment-like projections, the projections being evenly separated from one another by a radial slot around the circumference of each milling disk.
- the present invention is based on the problem of developing a broaching tool of the type mentioned at the outset in such a way that slots can be cut or cleared with as little force as possible and in one operation.
- the problem is essentially solved in that successive segment-like cutting projections of each disk are at a distance from one another which is at least approximately equal to or greater than the respective circumferential extent of the projection.
- the segment-like projections of each disk are arranged at a distance or space from one another, the space including an angle ⁇ with respect to the axis in the circumferential direction which is at least approximately equal to or greater than an angle ⁇ , which is essentially a segment-like projection with respect to the axis in the circumferential direction.
- the invention is also characterized in that successive segment-like projections of each disc have a spacing from one another which is at least approximately equal to or greater than the respective circumferential extent of the segment-like projections, and that projections of adjacent discs have a circumference ⁇ direction offset to each other or at least partially offset to each other.
- each disc is arranged at a distance or space from one another, the space including an angle ⁇ with respect to the axis in the circumferential direction which is at least approximately equal to or greater than an angle ⁇ , which is essentially one in each case includes a segment-like projection with respect to the axis in the circumferential direction, and that the disks running next to one another are offset with respect to their projections in the circumferential direction.
- the teaching according to the invention achieves a better cutting or broaching effect of the broaching tool.
- the contact pressure can be reduced. So z. B. the effort of a broaching tool with seven disks arranged next to each other, each with four segments, the same as the effort of a cutting tool with two disks arranged in parallel, in which the segments are arranged evenly and closely behind one another along the circumference.
- the spacing of the segments in the axial direction is due to the disks which are offset in the circumferential direction with respect to the projections can be greater than the distance between directly adjacent milling disks.
- the joint walls created when the broaching tool penetrates the material can be broken by vibration of the adjacent panes and then conveyed out of the slot. This enables the cutting or clearing of a slot in one operation.
- a special embodiment is characterized in that the disks are offset with respect to their projections in the circumferential direction so that viewed in the axial direction of the broaching tool, at least two segment-like projections overlap or even completely cover one another. This arrangement ensures that the broaching tool is at the same time with at least two segments in engagement with material to be cut or cleared.
- the projections of the disks can be arranged offset to one another in the circumferential direction in such a way that the segment-like projections form a V-like wedge shape when the disks are developed in one plane.
- the segments of adjacent disks are arranged in the circumferential direction without or largely without overlap with one another. This improves both the synchronous properties and the broaching capacities of the broaching tool.
- the projections of a plurality of disks located next to one another and starting from a common axis can form a closed or largely closed circular ring in a side view of the broaching tool.
- closed can mean that the circular ring has interruptions, preferably at regular intervals.
- the disks are preferably of the same design, they can vary with respect to the length and / or the number of the projections, of course with the same effective radius otherwise.
- a broaching tool with, for example, 5 or 7 disks can comprise two groups of different disks, with disks of different designs being formed one on top of the other.
- the segments span planes which intersect a plane spanned by the disk at an angle which is preferably in the range between 0.5 * and 5 °.
- each cutting projection or segment has a ramp-shaped course in the direction of rotation, the respective cutting surface at an angle ⁇ with 0.5 ⁇ ⁇ 5 °, preferably 1 ′′ ⁇ ⁇ 2 °, around the axis of rotation of the broaching tool can cut a circle.
- the disks have a bore for receiving at least one centering pin.
- the desired relative position of the disks relative to one another can thereby be fixed. Alignment of the panes to one another and their fixing can also be done by gluing and / or bracing.
- the broaching tool is preferably designed as a tool set. This eliminates the need for the user to align the individual milling discs.
- FIG. 1 is a plan view of a milling disk
- FIG. 2 a broaching tool composed of milling disks according to FIG. 1 in
- Fig. 3 is a development of the broach over 360 ° in one plane.
- a disc (10) is shown in principle, which serves as an element for a broaching tool (12) designed as a tool set, the structure of which is explained in more detail in Fig. 2.
- the disc (10) has a metallic, preferably lacquered disc-shaped base body (14), from the circumference (16) of which segment-like projections (18), (20), (22), (24) extend.
- the circumferential projections (18), (20), (22), (24) are spaced apart from one another by spaces (26), (28), (30), (32) evenly over the circumference (16).
- this is not a mandatory feature. Rather, the length of the segment-like projections and / or their spacing can vary in the circumferential direction.
- the above segments (18), (20), (22), (24) are designed as supports for segment bodies (34), (36), (38), (40).
- the segment bodies (34), (36), (38), (40) essentially consist of sintered metal with diamond grains and are connected to the segments or projections (18), (20), (22), (24) as laser welded.
- the segment bodies have a width which is preferably greater than the width of the base body (14).
- the segment body (40) shows that the cutting surface (41) rises in the circumferential direction, that is to say the segment body (40) has a ramp-shaped geometry.
- the cutting height (41) of the segment body should be the same along the entire cutting surface (41), ie the length of the segment (40). 6
- the cutting surface (41) preferably cuts a circle formed around the axis of rotation (33) at an angle ⁇ of 0.5 ° ⁇ ⁇ 5 °, in particular 1 ° ⁇ ⁇ 2 °.
- notches (42) can be provided in order to reduce a notch effect in this area.
- the disk (10) has an opening (48) for receiving a fixing pin (50), so that the relative position of the milling disks (10) relative to one another is ensured when the tool set (12) is in operation.
- the panes can also be fixed to one another by tensioning, gluing or other measures.
- Fig. 2 shows a side view of the broaching tool (12).
- the broaching tool (12) essentially consists of the tool set holder (46) with a hollow shaft stub (47) on which the disks (10) are arranged at a distance d from one another.
- circular intermediate elements (52) are inserted between the disks (10).
- the distance d between the disks (10) can be in a range from 2 to 6 mm, preferably 4 mm.
- the disks (10) themselves have a width b in a range of preferably 1.4 to 1.8 mm, in particular 1.6 mm.
- One end face (54) of the hollow cylindrical shaft (47) has a plate-shaped end (56) which forms a T-shape with the shaft end (47) and serves as a stop for at least one disk (10).
- the plate-shaped disk (56) preferably has an opening in its center for receiving a tool such as an Allen key in order to connect the tool set (12) to a drive (not shown).
- the hollow shaft stub (47) has a thread (58) on the inside, as a result of which the tool set holder (47) can be fastened with a rotatable drive shaft of the machine tool, not shown.
- 3 shows a development (60) of the broaching tool (12) over 360 ° in one plane.
- the broaching tool (12) consists of a total of seven disks, the construction of which in the exemplary embodiment is identical to that of the disk (10), which was described with reference to FIG. 1.
- the disks are arranged such that they are offset with respect to one another in the circumferential direction in such a way that segment bodies (34), (62), (64), (66), (68), (70), (72) of adjacent disks form a wedge shape.
- the disks are arranged in such a way that at least two segment bodies overlap or at least overlap in the axial direction.
- the disks are arranged offset from one another such that at least one front edge (78), (80) of an adjacent segment (62) is on an end edge (74) of a segment (34) lying in the running direction (76). , (64) follows. If necessary, there may be a distance between the front and end or rear edges which follow one another in the side view of the pane set.
- the broaching tool (12) thus has four wedge-shaped arrangements (82), (84), (86), (88) on the circumference, a wedge shape extending over 120 ° in each case.
- the segments (24), (36), (38), (40) forming a tip of the wedge shapes are arranged one behind the other in the circumferential direction at an angle of 90 °.
- the wedge shapes (82), (84), (86), (88) are arranged in a nested manner, the segments forming the tip of the wedge shapes in the development (60) taking up the same angular position as the end segments (70), (72). a previous wedge shape (82).
- the broaching tool can also run in the direction of the arrow (76).
- the number and / or length of the projections can also vary from disk to disk.
- outer disks can have more cutting projections than inner disks and vice versa.
- Successive disks can also vary with respect to the number and / or length of the cutting projections.
- the projections should be evenly distributed over the circumference of each disc.
- the arrangement with seven disks shown in FIGS. 1 to 3 has proven to be particularly advantageous.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9416221U DE9416221U1 (en) | 1994-10-10 | 1994-10-10 | Broaching tool |
DE9416221U | 1994-10-10 | ||
PCT/EP1995/003984 WO1996011093A1 (en) | 1994-10-10 | 1995-10-10 | Broaching tool |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0785853A1 true EP0785853A1 (en) | 1997-07-30 |
Family
ID=6914647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95934665A Withdrawn EP0785853A1 (en) | 1994-10-10 | 1995-10-10 | Broaching tool |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0785853A1 (en) |
KR (1) | KR970706951A (en) |
CN (1) | CN1169125A (en) |
AU (1) | AU3699995A (en) |
BR (1) | BR9509295A (en) |
CA (1) | CA2202260A1 (en) |
DE (1) | DE9416221U1 (en) |
WO (1) | WO1996011093A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6321738B1 (en) | 1998-08-28 | 2001-11-27 | Diamond Products Joint Venture | Diamond saw blade |
GB2361204B (en) * | 2000-03-13 | 2003-12-03 | John Elliott Burgess | An attachment for a percussive tool |
DE102010063103A1 (en) * | 2010-12-15 | 2012-06-21 | Robert Bosch Gmbh | Processing unit for use in angle grinder for introducing cable slots into e.g. gypsum board of wall, has spatial device moving corresponding to working tools, lying between working planes of tools and formed by spatial element |
JPWO2018180119A1 (en) * | 2017-03-27 | 2020-02-06 | 日本電産株式会社 | Brooch tool |
CN107486592B (en) * | 2017-10-18 | 2019-07-30 | 成都格润特高新材料有限公司 | Short sword cutting broaching finishing broach and short sword cutting combination broaching finishing broach |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3234499A1 (en) * | 1982-09-17 | 1984-03-29 | Fa. Röttger Jansen-Herfeld, 5630 Remscheid | Saw blade with uneven tooth spacing |
DE8706935U1 (en) * | 1987-05-14 | 1987-10-08 | Impex-Essen Vertrieb Von Werkzeugen Gmbh, 8800 Ansbach, De | |
DE3737045C2 (en) * | 1987-10-31 | 1994-04-07 | Crones & Co Gmbh | Motorized handheld device for milling grooves in walls or the like. |
RU1771979C (en) * | 1990-07-19 | 1992-10-30 | Специальное конструкторско-технологическое бюро "Строммашина" | Multidisk tool |
-
1994
- 1994-10-10 DE DE9416221U patent/DE9416221U1/en not_active Expired - Lifetime
-
1995
- 1995-10-10 BR BR9509295A patent/BR9509295A/en not_active Application Discontinuation
- 1995-10-10 KR KR1019970702453A patent/KR970706951A/en not_active Application Discontinuation
- 1995-10-10 AU AU36999/95A patent/AU3699995A/en not_active Abandoned
- 1995-10-10 CN CN95196716A patent/CN1169125A/en active Pending
- 1995-10-10 EP EP95934665A patent/EP0785853A1/en not_active Withdrawn
- 1995-10-10 CA CA002202260A patent/CA2202260A1/en not_active Abandoned
- 1995-10-10 WO PCT/EP1995/003984 patent/WO1996011093A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9611093A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1996011093A1 (en) | 1996-04-18 |
CA2202260A1 (en) | 1996-04-18 |
BR9509295A (en) | 1998-11-03 |
CN1169125A (en) | 1997-12-31 |
AU3699995A (en) | 1996-05-02 |
DE9416221U1 (en) | 1995-04-06 |
KR970706951A (en) | 1997-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2060356B1 (en) | Saw blade with a carrier and teeth with cutting edges | |
EP0104458A2 (en) | Centrifuge sieve and process for its production | |
EP0373292A1 (en) | Boring tool for metal workpieces, plastics and the like | |
DE2161233A1 (en) | Side milling cutters, in particular slot, groove or form milling cutters | |
DE3044790A1 (en) | DISC MILLERS | |
EP2520389A1 (en) | Saw blade for sawing hollow profiles and form profiles | |
WO2011098239A1 (en) | Side-milling cutter, in particular for machining toothing systems | |
DE2114802A1 (en) | Flexible joint assembly | |
EP1425127B1 (en) | Combination tool | |
DE2817968C2 (en) | Chain drum | |
EP2212046B1 (en) | Tool for machining work pieces | |
DE102010027413A1 (en) | Replaceable cutting insert for side milling cutter to produce e.g. deep hole drills, has plate surfaces turned away from each other and supporting relief-like profile, and V-shaped opening between handle strips and/or truncated pyramids | |
EP0785853A1 (en) | Broaching tool | |
DE10112165B4 (en) | Rod cutter head for gear cutting | |
DE102014209135B3 (en) | Tool head and rotary tool with such | |
EP0590408A1 (en) | Tool for milling mortises and slots | |
EP1024247A1 (en) | Drilling tool | |
EP2766137B1 (en) | Tool system for chip removing machining of a workpiece | |
DE10333815B4 (en) | Welding process for tubular element and gear pump, which is manufactured by the welding process | |
DE102018118959B3 (en) | cutting wheel | |
EP3621763A1 (en) | Multi-edge reamer | |
EP3663043B1 (en) | Grinding tool | |
DE60300603T2 (en) | Drill with dummy insert | |
EP1652643B1 (en) | Method for manufacturing a core drill | |
EP1767318B1 (en) | Chip removing cutting tool |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19970508 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19990713 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20010501 |