US3918535A - Device for damping the recoil of a tool connected to a hammer machine - Google Patents
Device for damping the recoil of a tool connected to a hammer machine Download PDFInfo
- Publication number
- US3918535A US3918535A US472809A US47280974A US3918535A US 3918535 A US3918535 A US 3918535A US 472809 A US472809 A US 472809A US 47280974 A US47280974 A US 47280974A US 3918535 A US3918535 A US 3918535A
- Authority
- US
- United States
- Prior art keywords
- tool
- spring
- machine housing
- feeding force
- rolling bearings
- 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
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
- B25D17/24—Damping the reaction force
Definitions
- ABSTRACT A recoil damping device for a hammer machine in which a heavily prestressed spring is used, the spring being mounting between two supporting surfaces in the machine housing. The tool acts on the spring between the supporting surfaces.
- a known device of this kind comprises a spring through which feeding force is transferred from the ma chine housing to the tool. That device has the disadvantage that the length of the spring is dependent on the applied feeding force. This means that the position in which the shank of the tool is situated when the hammer piston hits the shank is dependent on the applied feeding force.
- a machine which comprises a recoil damper of that kind works optimally only together with a certain predetermined feeding force.
- the present invention aims at doing away with the above mentioned disadvantage. This is achieved in that a spring is prestressed in the machine housing between two supporting surfaces arranged at a fixed axial distance. Since the spring is prestressed in the machine housing, an applied feeding force results therein that only a part of the force of the spring acting on the machine housing is transferred to the tool. This means that the stress in the spring and consequently the length of the spring is unchanged.
- the hammer drilling machine shown in the FIGURE comprises a machine housing 1 in which a forwards and backwards movable hammer piston 3 is arranged.
- a drill-sleeve 6 is by means of rolling bearings 8, 9 journalled in the machine housing 1.
- a motor 2 rotates via a toothed wheel 5, the drill-sleeve 6, and a further sleeve 7 a tool 4 which is axially movable in the machine.
- the rolling bearing 8 rests against a supporting surface 13 arranged in the machine housing 1.
- a rolling bearing 10 rests against a supporting surface 14, which is arranged at a fixed axial distance from the surface 13, in the machine housing 1.
- a transferring device rests with a surface 16 against the tool 4 and is pressed forwards by a prestressed spring 12 which via a sleeve 11 rests against the bearing 10.
- the machine shown works in the following way.
- the force from the prestressed spring 12 is transferred via the transferring device 15, the drill-sleeve 6, and the bearing 8 to the supporting surface 13 of the machine housing 1.
- the tool 4 is pressed against the surface 16 on the transferring device 15. This does not mean that the stress in the spring is changed but only that the supporting surface 13 is unloaded.
- the tool 4 is turned by means of the motor 2 at the same time as it is exposed to impacts from the hammer piston 3.
- the tool 4 recoils from the material in which drilling occurs it hits the surface 16 on the transferring device 15 which through this is lifted out of contact with the drillsleeve 6 if the recoil force exceeds a certain value.
- a recoil damping device for a hammer-type rockdrilling machine which includes a tool, a machine housing coupled to said tool and substantially constantly applying a feeding force to said tool in a working direction, means for additionally supplying impacts to said tool and means for rotating said tool, said tool recoiling after application of said impacts, said recoil damping device damping the recoil of said tool and comprising:
- a spring coupled to said machine housing for transferring said feeding force from said machine housing to said tool
- said tool being coupled to said machine housing so as to act on said spring between said rolling bearings;
- said spring being dimensioned and heavily prestressed between said rolling bearings so that the length of said spring is substantially not influenced by said feeding force applied to said tool.
- a device in which said means for rotating the tool is arranged between said spring and one of said rolling bearings, and wherein a further rolling bearing is provided, said tool rotating means being carried in the machine housing by said one rolling bearing and said further rolling bearing.
- a device comprising means for transferring feeding force, which transferring means partly rests against the spring and partly against the tool.
- a hammer-type rock-drilling machine comprising:
- a machine housing coupled to said tool and including means for substantially constantly applying a feeding force to said tool in a working direction, means for additionally supplying impacts to said tool and means for rotating said tool, said tool recoiling after application of said impacts;
- a spring coupled to said machine housing for transferring said feeding force from said machine housing to said tool
- said tool being coupled to said machine housing so as to act on said spring between said rolling bearings;
- said spring being dimensioned and heavily prestressed between said rolling bearings so that the length of said spring is substantially not influenced 4 being carried in the machine housing by said one rolling bearing and said further rolling bearing.
- a device comprising means for transferring feeding force, which transferring means partly rests against the spring and partly against the tool.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Drilling And Boring (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7307224A SE391666B (sv) | 1973-05-23 | 1973-05-23 | Rekyldempningsanordning vid slaende maskiner |
Publications (1)
Publication Number | Publication Date |
---|---|
US3918535A true US3918535A (en) | 1975-11-11 |
Family
ID=20317567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US472809A Expired - Lifetime US3918535A (en) | 1973-05-23 | 1974-05-23 | Device for damping the recoil of a tool connected to a hammer machine |
Country Status (11)
Country | Link |
---|---|
US (1) | US3918535A (ja) |
JP (1) | JPS5027171A (ja) |
AT (1) | AT332838B (ja) |
CA (1) | CA1012959A (ja) |
DE (1) | DE2423902C3 (ja) |
FI (1) | FI57547C (ja) |
FR (1) | FR2230468B1 (ja) |
GB (1) | GB1444862A (ja) |
IT (1) | IT1011495B (ja) |
SE (1) | SE391666B (ja) |
ZA (1) | ZA743299B (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4141671A (en) * | 1977-04-20 | 1979-02-27 | Tarsoly Balazs K | Tool gas turbine motor |
US4161990A (en) * | 1976-11-04 | 1979-07-24 | Atlas Copco Aktiebolag | Rock drilling apparatus |
US20040094315A1 (en) * | 2002-11-18 | 2004-05-20 | Chen, Hsiu-Ju | Shock-absorbing structure for pneumatic tool |
DE10021355B4 (de) * | 2000-05-02 | 2005-04-28 | Hilti Ag | Schlagendes Elektrohandwerkzeuggerät mit schwingungsentkoppelten Baugruppen |
US20060144605A1 (en) * | 2003-11-06 | 2006-07-06 | Hsiu-Ju Chen | Shock-absorbing structure for pneumatic tool |
US20060144604A1 (en) * | 2004-12-23 | 2006-07-06 | Martin Soika | Power tool housing |
US20070215370A1 (en) * | 2006-03-01 | 2007-09-20 | Basso Industry Corp. | Shock-Absorbing Structure for Pneumatic Tool |
CN102536130A (zh) * | 2012-02-10 | 2012-07-04 | 江苏省无锡探矿机械总厂有限公司 | 钻机旋转式接头装置 |
CN102536129A (zh) * | 2011-12-30 | 2012-07-04 | 中国地质大学(武汉) | 一种用于智能柔管钻探装置的快速接头 |
US20130192861A1 (en) * | 2010-04-20 | 2013-08-01 | Robert Bosch Gmbh | Hand power tool device |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE392830B (sv) * | 1975-03-18 | 1977-04-25 | Atlas Copco Ab | Anordning vid bergborrmaskiner for dempning av rekylen fran ett till maskinen anslutet arbetsverktyg |
SE398066B (sv) * | 1975-03-18 | 1977-12-05 | Atlas Copco Ab | Sett och anordning vid slaende bearbetning for dempning av rekylen fran ett arbetsverktyg |
DE3405922A1 (de) * | 1984-02-18 | 1985-08-22 | Robert Bosch Gmbh, 7000 Stuttgart | Handwerkzeugmaschine, insbesondere bohr- oder schlaghammer |
DE19837754A1 (de) * | 1998-08-20 | 2000-03-02 | Wafios Maschinen Wagner | Hochgeschwindigkeits-Schlagschere zum Abscheren von Stangen- und Drahtabschnitten |
CN101787852B (zh) * | 2010-02-04 | 2012-10-31 | 冯静 | 以锤击作为动力的冲击钻及其使用方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2292867A (en) * | 1940-01-15 | 1942-08-11 | Gas Tool Patents Corp | Drilling apparatus |
US2609813A (en) * | 1946-08-15 | 1952-09-09 | Chicago Pneumatic Tool Co | Gas hammer |
US2638749A (en) * | 1951-01-19 | 1953-05-19 | Henry J Clay | Electropneumatic hammering device |
US3086501A (en) * | 1959-06-24 | 1963-04-23 | Henry E Kyburg | Fluid-operated hammer |
US3114421A (en) * | 1960-04-04 | 1963-12-17 | Skil Corp | Pneumatic system for a rotary hammer device |
US3666024A (en) * | 1970-07-29 | 1972-05-30 | Richard W Beaumont | Rock drill |
-
1973
- 1973-05-23 SE SE7307224A patent/SE391666B/xx unknown
-
1974
- 1974-05-15 FI FI1507/74A patent/FI57547C/fi active
- 1974-05-16 DE DE2423902A patent/DE2423902C3/de not_active Expired
- 1974-05-21 IT IT51152/74A patent/IT1011495B/it active
- 1974-05-22 JP JP49056788A patent/JPS5027171A/ja active Pending
- 1974-05-22 ZA ZA00743299A patent/ZA743299B/xx unknown
- 1974-05-22 AT AT424574A patent/AT332838B/de not_active IP Right Cessation
- 1974-05-22 FR FR7417867A patent/FR2230468B1/fr not_active Expired
- 1974-05-23 CA CA200,615A patent/CA1012959A/en not_active Expired
- 1974-05-23 US US472809A patent/US3918535A/en not_active Expired - Lifetime
- 1974-05-23 GB GB2308074A patent/GB1444862A/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2292867A (en) * | 1940-01-15 | 1942-08-11 | Gas Tool Patents Corp | Drilling apparatus |
US2609813A (en) * | 1946-08-15 | 1952-09-09 | Chicago Pneumatic Tool Co | Gas hammer |
US2638749A (en) * | 1951-01-19 | 1953-05-19 | Henry J Clay | Electropneumatic hammering device |
US3086501A (en) * | 1959-06-24 | 1963-04-23 | Henry E Kyburg | Fluid-operated hammer |
US3114421A (en) * | 1960-04-04 | 1963-12-17 | Skil Corp | Pneumatic system for a rotary hammer device |
US3666024A (en) * | 1970-07-29 | 1972-05-30 | Richard W Beaumont | Rock drill |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4161990A (en) * | 1976-11-04 | 1979-07-24 | Atlas Copco Aktiebolag | Rock drilling apparatus |
US4141671A (en) * | 1977-04-20 | 1979-02-27 | Tarsoly Balazs K | Tool gas turbine motor |
DE10021355B4 (de) * | 2000-05-02 | 2005-04-28 | Hilti Ag | Schlagendes Elektrohandwerkzeuggerät mit schwingungsentkoppelten Baugruppen |
US20040094315A1 (en) * | 2002-11-18 | 2004-05-20 | Chen, Hsiu-Ju | Shock-absorbing structure for pneumatic tool |
US20060144605A1 (en) * | 2003-11-06 | 2006-07-06 | Hsiu-Ju Chen | Shock-absorbing structure for pneumatic tool |
US20060144604A1 (en) * | 2004-12-23 | 2006-07-06 | Martin Soika | Power tool housing |
US8430182B2 (en) | 2004-12-23 | 2013-04-30 | Black & Decker Inc. | Power tool housing |
US20070215370A1 (en) * | 2006-03-01 | 2007-09-20 | Basso Industry Corp. | Shock-Absorbing Structure for Pneumatic Tool |
US20130192861A1 (en) * | 2010-04-20 | 2013-08-01 | Robert Bosch Gmbh | Hand power tool device |
US9440345B2 (en) * | 2010-04-20 | 2016-09-13 | Robert Bosch Gmbh | Hand power tool device |
CN102536129A (zh) * | 2011-12-30 | 2012-07-04 | 中国地质大学(武汉) | 一种用于智能柔管钻探装置的快速接头 |
CN102536130A (zh) * | 2012-02-10 | 2012-07-04 | 江苏省无锡探矿机械总厂有限公司 | 钻机旋转式接头装置 |
Also Published As
Publication number | Publication date |
---|---|
CA1012959A (en) | 1977-06-28 |
JPS5027171A (ja) | 1975-03-20 |
FR2230468A1 (ja) | 1974-12-20 |
DE2423902B2 (de) | 1976-07-29 |
FI150774A (ja) | 1974-11-24 |
ZA743299B (en) | 1975-08-27 |
GB1444862A (en) | 1976-08-04 |
AT332838B (de) | 1976-10-25 |
FR2230468B1 (ja) | 1978-05-26 |
FI57547C (fi) | 1980-09-10 |
FI57547B (fi) | 1980-05-30 |
DE2423902C3 (de) | 1978-06-22 |
SE391666B (sv) | 1977-02-28 |
DE2423902A1 (de) | 1974-12-12 |
IT1011495B (it) | 1977-01-20 |
ATA424574A (de) | 1976-02-15 |
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