CN1124918C - Tool - Google Patents
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- Publication number
- CN1124918C CN1124918C CN98125383A CN98125383A CN1124918C CN 1124918 C CN1124918 C CN 1124918C CN 98125383 A CN98125383 A CN 98125383A CN 98125383 A CN98125383 A CN 98125383A CN 1124918 C CN1124918 C CN 1124918C
- Authority
- CN
- China
- Prior art keywords
- district
- region
- handle region
- hardness
- instrument
- 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.)
- Expired - Lifetime
Links
- 238000003780 insertion Methods 0.000 claims abstract description 26
- 230000037431 insertion Effects 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 5
- 208000034189 Sclerosis Diseases 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A working tool for processing a hard foundation such as stone and concrete has a plurality of areas (B, S, E, A) with different hardness parameters on its whole length, the hardness are designed according to different stress of the tool. A working area (B) and a balancing areas (A) is deeped, only edge area of a shaft area (S) and a insertion area (E) is harded.
Description
Technical field
The present invention relates to a kind of instrument that is used to process the hard substrate of rock, concrete and so on.
Background technology
Tool using when processing hard substrate, especially rock, concrete or analog is particularly cut a hole tool, and it can be installed in instrument admittance place of a drilling tool or cutter turning device.Handle district at instrument in process at first forms bending moment and pulling force, and they require to have a high destruction fracture toughness in conjunction with a high stress alternation again.Should also require a high mar proof with the opposing surface damage in the zone in addition.Instrument insert the district except a high destruction fracture toughness will be arranged and drilling tool and/or cutter cut the surface that device is frictionally engaged a high wearability also will be arranged.
From the known a kind of cutter tool of WO97/15421, it can be inserted into a drilling tool or/and cutter is cut on the device.This known means has a processing district, a handle district, and one is inserted district and a hammering district.Handle district and insertion district have very hard core area, and it is surrounded by a softer fringe region.Hard core space is enbrittled instrument, thereby the high stress that occurs during substrate in processing causes instrument in the handle district with insert fractureing fast of district with the form of bending moment and pulling force.In addition, because the little hardness of marginal zone makes the surface of this known means be vulnerable to damage again.
Japan's special permission discloses flat 6-297164 and discloses a kind of instrument, has processing district and handle region of complete through hardening.But handle region and hammering district do not run jointly.Handle region that lumps together like this and hammering district damage easily.
Summary of the invention
The objective of the invention is to, a kind of instrument that can make economically is provided, high intensity is arranged in the hammering district and have high fracture toughness and high wearability in handle region and insertion district.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of rock that is used to process, the instrument of the hard substrate of concrete and so on, has a processing district in the first end district of described instrument, a handle region that links to each other with this processing district, an insertion district that links to each other with handle region, with a hammering district that links to each other with this insertion district, wherein said processing district is had different hardness with the marginal zone of inserting the district with core space by through hardening and handle region, it is characterized in that described hammering district is that the core area ratio fringe region separately with core area described handle region and/or described insertion district through hardening is soft.
With by instrument of the present invention in the handle district with insert the district and reach desired high fracture toughness, because at first occur a high surface stress and pulling force in the insertion district of instrument and additionally also occur a high bending moment in the handle district.In addition, distinguish the high wearability that also can guarantee a necessity in handle district and insertion.
Can be advantageously like this in the handle district with insert the district and obtain the fracture toughness and the wearability that can meet the demands, be that the core of handle region and/or the hardness of inserting the core in district are up to 35HRC, the fringe region of handle region is or/and the hardness minimum of the fringe region in insertion district is 50HRC.
The preferred situation of a kind of fracture toughness and wearability is suitable to be realized like this, and promptly the degree of depth of the fringe region in handle region and/or insertion district is about as much as the diameter of 0.10～0.15 times handle region.
Because very high mechanical load will bear in processing district and hammering district, the hardness in this processing district and/or hammering district preferably should be at least 50HRC.
Owing to advantageously should insert the material of district and handle region and make, and be bonded together with handle region by friction welding (FW) by being different from the hammering district this processing district of reason of use aspect.The processing district is for example made at the steel of 0.45% air cooling sclerosis at least by phosphorus content.The hammering district inserts district and handle region and for example is at least 0.40% quenched and tempered steel by its phosphorus content and makes.
In order to reach the different hardness parameter that limits by tool length, can use diverse ways, described parameter designs according to the different stressed zone territory of instrument individually.
For example the sclerosis of instrument can be by impewdance matching to carry out with different feed speeds under the situation of the alternating current frequency of constant for example 10KHZ.This feed speed for example is 15-30mm/ second when the fringe region in sclerosis handle region and insertion district.Reduce significantly or make instrument stop certain hour in processing district and this feed speed of hammering district, thereby can obtain through hardening in this zone.
For example by a kind of cooling medium instrument is quenched when impewdance matching, it is combined by a polymer quenching agent and water.By polymer quenching agent the quenching velocity of water is reduced.For example can be parallel to the water injector (Brause) that induction coil is provided with and on instrument, apply cooling medium by one.The instrument that makes is in this way directly just quenched after leaving induction coil.
Description of drawings
Below by the accompanying drawing of describing an embodiment the present invention is further described.In the accompanying drawing:
Fig. 1 is the partial sectional view by the cutter tool of diamond bit form of the present invention;
Fig. 2 is the partial sectional view by another cutter tool of wide flat chisel form of the present invention.
The specific embodiment
At the instrument shown in Fig. 1 and 21,10 by a workspace B, a handle region S who links to each other with workspace B, insertion district E who links to each other with handle region S with one with insert the hammering district A composition that district E links to each other.Workspace B and hammering district A be through hardening and at handle region S with to insert district E be that edge region is hardened.The core area of handle region S and insertion district E has a hardness that is up to 35HRC.The hardness of the marginal zone of handle region S and insertion district E is 57 ± 3HRC, and the hardness of the hardness of processing district B and hammering district A is 57 ± 3HRC.The depth D 2 of the fringe region that hardens of handle region S and insertion district E is corresponding to the diameter D1 of 0.10 to 0.15 times handle region S.This diameter D1 is corresponding to its diagonal (Eckmass) under the situation of polygon cross section.The polygonal cross section of the handle region S of the instrument shown in Fig. 1 and Fig. 2 and insertion district E has six angles.
The processing district B of the instrument of diamond bit 1 form shown in Figure 1 is retracted to a top tip part at machine direction.Handle region S and insertion district E have a hexagonal transverse cross section perpendicular to the longitudinal axis extension of instrument.This insertion district E is at a recess 2 that has a winding shape near the position of handle region S, and it is used to admit the lock piece of instrument folder, promptly inserts in this instrument folder by instrument of the present invention.Inserting district E is designed to columniform to transition region and the whole hammering district A of hammering district A.The recess 2 of this cylindricality zone 3 and annular for example has a diameter, and its maximum is corresponding to two distances that are parallel to each other between the plane of extending of handle region S.
The processing district B of the instrument 10 of flat chisel 10 forms shown in Figure 2 is extended to a width L up to its free end spade.Handle region S and insertion district E have a cross section with a hexagon profile perpendicular to the longitudinal axis extension of instrument.Insert district E and be provided with a plurality of locking elements of groove 11, promptly be inserted in this instrument folder by instrument of the present invention to admit an instrument to press from both sides in circumferential equally distributed long hole forms.
Claims (7)
1. one kind is used to process rock, the instrument of the hard substrate of concrete and so on, has a processing district (B) in the first end district of described instrument, a handle region (S) that links to each other with this processing district (B), an insertion district (E) that links to each other with handle region (S), with a hammering district (A) that links to each other with this insertion district (E), wherein said processing district (B) is had different hardness with the marginal zone of inserting district (E) with core space by through hardening and handle region (S), it is characterized in that described hammering district (A) is that the core area ratio fringe region separately with core area described handle region (S) and/or described insertion district (E) through hardening is soft.
2. by the described instrument of claim 1, it is characterized in that the hardness of the core area in the hardness of the core area of handle region (S) and/or insertion district (E) is up to 35HRC.
3. by claim 1 or 2 described instruments, it is characterized in that the hardness minimum of the fringe region in the hardness of the fringe region of handle region (S) and/or insertion zone (E) is 50HRC.
4. by claim 1 or 2 described instruments, it is characterized in that the degree of depth (D2) of the fringe region in the degree of depth (D1) of the fringe region of handle region (S) and/or insertion district (E) is equivalent to the diameter (D1) of 0.1 to 0.15 times handle region (S).
5. by claim 1 or 2 described instruments, it is characterized in that the hardness of the hardness of processing district (B) and/or hammering district (A) is at least 50HRC.
6. by claim 1 or 2 described instruments, it is characterized in that by a kind of and hammering district (A), insertion district (E) and the different material of handle region (S) are made and linked to each other with handle region (S) by friction welding (FW) processing district (B).
7. by claim 1 or 2 described instruments, it is characterized in that, with different feed speeds instrument is hardened when the constant alternating current frequency by impewdance matching.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19757271A DE19757271A1 (en) | 1997-12-22 | 1997-12-22 | Tool |
| DE19757271.5 | 1997-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1220935A CN1220935A (en) | 1999-06-30 |
| CN1124918C true CN1124918C (en) | 2003-10-22 |
Family
ID=7853018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98125383A Expired - Lifetime CN1124918C (en) | 1997-12-22 | 1998-12-21 | Tool |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0925881B1 (en) |
| JP (1) | JPH11245222A (en) |
| CN (1) | CN1124918C (en) |
| DE (2) | DE19757271A1 (en) |
| HU (1) | HU221837B1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10133946B4 (en) | 2001-07-17 | 2011-01-20 | Robert Bosch Gmbh | flat chisel |
| KR100475631B1 (en) * | 2002-06-14 | 2005-03-10 | 이두찬 | Braker chisel with improved were-resistance and crushing-ability, manufacturing apparatus and method, and high-manganese steel thereof |
| DE102004031600B4 (en) * | 2004-06-30 | 2006-04-20 | Hilti Ag | Tool for working a mineral substrate with an ultrasonic tool device |
| CN100423906C (en) * | 2006-08-22 | 2008-10-08 | 朱清明 | Impact chipper for electric hammer |
| DE102010031313A1 (en) * | 2010-07-14 | 2012-01-19 | Hilti Aktiengesellschaft | Tool i.e. chisel tool, for hand-held power tool, has shaft with spigot that is inserted into tool receiver, where wear-resistant component and adjacent region of spring steel are joined together in multi-orbital friction weld |
| EP2502710B1 (en) | 2011-03-22 | 2020-04-22 | Black & Decker Inc. | Chisels |
| CN103009344A (en) * | 2012-11-14 | 2013-04-03 | 涂志强 | Hexagonal steel chisel |
| USD737875S1 (en) | 2013-03-15 | 2015-09-01 | Black & Decker Inc. | Drill bit |
| USD734792S1 (en) | 2013-03-15 | 2015-07-21 | Black & Decker Inc. | Drill bit |
| USD752937S1 (en) * | 2013-06-18 | 2016-04-05 | Hilti Aktiengesellschaft | Chisel |
| KR101692494B1 (en) * | 2016-02-25 | 2017-01-03 | 장철길 | Chisel and manufacturing method of the same |
| JP7139033B2 (en) * | 2018-02-27 | 2022-09-20 | 株式会社小松製作所 | Ripper shank and ripper device |
| EP3939748A1 (en) * | 2020-07-17 | 2022-01-19 | Hilti Aktiengesellschaft | Tool with protruding structure |
| EP4155031A1 (en) * | 2021-09-23 | 2023-03-29 | Sandvik Mining and Construction Oy | Breaking tool, breaking hammer and method of maintaining shape of breaking tool |
| EP4275856A1 (en) * | 2022-05-10 | 2023-11-15 | Hilti Aktiengesellschaft | Durable chisel and method for manufacturing such a chisel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT377207B (en) * | 1981-05-22 | 1985-02-25 | Schobesberger Ernst Ing | METHOD FOR PRODUCING SHAFTS CHISES |
| JPH0629746A (en) * | 1991-04-05 | 1994-02-04 | Philips Gloeilampenfab:Nv | Frequency tracking device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE592580C (en) * | 1934-02-10 | Walter Huelsbruch Dr Ing | Pointed iron or chisel, primarily for mining | |
| DE4228985A1 (en) * | 1992-08-31 | 1994-03-03 | Hilti Ag | Chisel tool |
| JPH06297164A (en) * | 1993-04-13 | 1994-10-25 | Mitsubishi Steel Mfg Co Ltd | Manufacture of chisel for breaker |
-
1997
- 1997-12-22 DE DE19757271A patent/DE19757271A1/en not_active Withdrawn
-
1998
- 1998-10-21 DE DE59802425T patent/DE59802425D1/en not_active Expired - Lifetime
- 1998-10-21 EP EP98811050A patent/EP0925881B1/en not_active Expired - Lifetime
- 1998-12-21 CN CN98125383A patent/CN1124918C/en not_active Expired - Lifetime
- 1998-12-21 JP JP10362499A patent/JPH11245222A/en active Pending
- 1998-12-21 HU HU9802993A patent/HU221837B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT377207B (en) * | 1981-05-22 | 1985-02-25 | Schobesberger Ernst Ing | METHOD FOR PRODUCING SHAFTS CHISES |
| JPH0629746A (en) * | 1991-04-05 | 1994-02-04 | Philips Gloeilampenfab:Nv | Frequency tracking device |
Also Published As
| Publication number | Publication date |
|---|---|
| HU221837B1 (en) | 2003-01-28 |
| CN1220935A (en) | 1999-06-30 |
| HUP9802993A2 (en) | 1999-06-28 |
| EP0925881B1 (en) | 2001-12-12 |
| HUP9802993A3 (en) | 2000-04-28 |
| JPH11245222A (en) | 1999-09-14 |
| HU9802993D0 (en) | 1999-02-01 |
| DE19757271A1 (en) | 1999-06-24 |
| EP0925881A1 (en) | 1999-06-30 |
| DE59802425D1 (en) | 2002-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20031022 |