CN100374233C - 制造锯的方法 - Google Patents
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- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7684—With means to support work relative to tool[s]
- Y10T83/7693—Tool moved relative to work-support during cutting
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- Y10T83/768—Rotatable disc tool pair or tool and carrier
- Y10T83/7684—With means to support work relative to tool[s]
- Y10T83/7693—Tool moved relative to work-support during cutting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T83/00—Cutting
- Y10T83/768—Rotatable disc tool pair or tool and carrier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T83/00—Cutting
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Abstract
本发明公开了一种制造锯的方法,该锯包括:一底座装置,一设置在底座装置上的臂支承件,一转动联接到臂支承件上的臂,和一由该臂支承的叶片装置,该叶片装置包括一个具有一中心的叶片,用来驱动该叶片的电机,及设置在电机和叶片之间的至少一个齿轮组,该方法包括以下步骤:从多个具有不同宽度的齿轮组中选择一齿轮组;在臂支承件和底座装置中的至少一个上提供至少一个定位销;在臂支承件和底座装置中的另一个上提供至少两个定位孔,定位孔的数目多于定位销的数目;根据选择的齿轮组,将至少一个定位销设置在至少两个定位孔中的一个上,以便适当地定位所述叶片使得所述叶片可以插入位于所述底座装置上的至少一个槽。
Description
本申请是一项分案申请,相应母案的申请号为99110966.X,申请日为1999年7月13日,发明名称为“切割锯”。
技术领域
本发明一般涉及一种锯的制造方法。
背景技术
切割锯是一种电动工具,可用来从如角钢和管等物体上切除金属块,并经常在建筑工地发现。切割锯通常包括一个底座,一个旋转固定在底座上的臂,并带有一个电机便携箱,该箱装有一电机,电机驱动叶片。可在臂上设置一静止防护罩来盖住叶片部分。这种叶片装置在切割操作中可从与放在底座上的工件不接触的第一位置向接触并切割工件的第二位置转动。
在电机便携箱或臂上设置一手柄,使操作者能够进行切割操作。通常,手柄具有一基本垂直的方位。
发明内容
根据本发明,提供了一种制造锯的方法,该锯包括:一底座装置,一设置在底座装置上的臂支承件,一转动联接到臂支承件上的臂,和一由该臂支承的叶片装置,该叶片装置包括一个具有一中心的叶片,用来驱动该叶片的电机,及设置在电机和叶片之间的至少一个齿轮组,该方法包括以下步骤:
从多个具有不同宽度的齿轮组中选择一齿轮组;
在臂支承件和底座装置中的至少一个上提供至少一个定位销;
在臂支承件和底座装置中的另一个上提供至少两个定位孔,定位孔的数目多于定位销的数目;
根据选择的齿轮组,将至少一个定位销设置在至少两个定位孔中的一个上,以便适当地定位所述叶片使得所述叶片可以插入位于所述底座装置上的至少一个槽。
根据本发明,采用了一种改进的切割锯。该切割锯包括一底座装置,一叶片装置,该叶片装置包括一具有一中心的叶片和用来驱动该叶片的电机,一旋转连接到底座装置上并承载叶片装置的臂,叶片装置可在接触并切割放在底座上的工件的下部位置与不接触工件的上部位置之间移动。切割锯还包括一个将工件夹持到位的台钳,该台钳包括一台钳螺杆,一支承台钳螺杆的锁闩支承件,和一设置在台钳螺杆端部的台钳爪。当叶片装置处于下部位置时,最好台钳爪与锁闩支承件之间的最大距离,约等于或小于叶片中心与锁闩支承件之间的距离。另外,切割锯还包括一与叶片装置联接的基本水平的手柄。最好手柄略微弯曲,弯曲部分的中心点设置在手柄的下面并朝向底座。
附图说明
本发明的其它特征和优点在下面的附图和详细说明中进行了描述,并将变得更加清楚。
附图示出了根据本发明原理的实际应用的本发明优选实施例,其中:
图1是本发明切割锯的透视图;
图2是图1中切割锯的侧视图;
图3是图1中切割锯沿图2中III-III线的局部顶视图/剖视图;及
图4A和图4B表示本发明制造切割锯的装配步骤;及
图5是优选使用在图1中切割锯上的电扇的局部前视图。
具体实施方式
现在参照附图对本发明进行描述,其中相同的数字代表相同的部件。参看图1,本发明的电动工具一般用10表示,在优选实施例中称为“切割锯”。
切割锯包括一电机便携箱12,该电机便携箱12容纳一用来驱动叶片14的电机11(见图3)。一静止防护罩16覆盖叶片14的一部分。一可移动防护罩18可套在静止防护罩16上,或者最好绕一点A(见图3)转动,以在切割操作时露出叶片14。
手柄200最好安装在电机便携箱12和/或臂22上。优选方案是,手柄200具有一基本水平的方位,如图1-3所示。另外,手柄200最好略微弯曲,弯曲部分的中心点最好在手柄200下面,即该中心点位置朝向底座26。已经发现,这种形状既在人体工程学上是正确的,又在美学上使人愉快。尽管如此,本领域技术人员将认识到,手柄200可略微弯曲,弯曲部分的中心点优选地在手柄200上面,即中心点位置背离底座26。
最好,手柄200包括一装在电机便携箱12(和/或臂22)上的下部201,和固定地联接到下部201上的上部202。螺钉203可用来将上部202联接到下部201上。具有这种结构是有益处的,因为它使切割锯10的制造及维护更加容易。
如图3所示,当下部201安装到电机便携箱12上之后,可在下部201上设置一开关204。类似地,不同的电线205可联接在开关204和电机11等之间。一旦全部布线和安装完成后,可将上部202安装并联接到下部201上。
将手柄200安装在电机便携箱12上,还使布线比典型的已有技术中的布置更加容易,因为可直接通过电机便携箱12送线,而不是通过更迂回的方式,如仅通过臂22送线。
参照图1,电机便携箱12最好与臂22相联。臂22最好也支承叶片14和防护罩16、18。臂22转动地安装在臂支承件24上,该臂支承件24安装在底座26上。优选地,转动杆24P(见图3)设置在臂支承件24之间。臂22最好可转动地设置在转动杆24P上,使能进行切割操作。优选地,臂22和/或臂支承件24可具有至少一个环绕和/或支承转动杆24P设置的轴承22B,以便于绕其旋转。这样,臂22可在两位置间运动:上部位置,在此叶片14不与工件接触,下部位置,在此叶片14接触并切割工件。优选地,叶片14可插入底座26上的槽26S中。
最好轴承22B设置在臂支承件24和臂22之间,使臂22与臂支承件24互相不接触,减少了磨损和消耗。如图3所示,这种布置可通过将轴承22B部分地放入臂22中,因此使轴承22B伸出臂22外来完成。
轴承22B也可以装在臂22上,以便于臂22绕转动杆24P旋转。优选地,只有轴承22B,而不是臂22,与转动杆24P接触。这种布置是有利的,因为它减少了转动杆24P和/或臂22的磨损和破裂。否则,磨损和破裂将在两部分之间产生游隙,既增大了不精确度,又使灰尘在两部件之间移动。由于该轴承使磨损和破裂减少到最小,优化了精度并实质上延长了运行寿命。
臂支承件24最好具有一向前延伸的分段50。分段50最好固定地联接到臂支承件24上,因此使分段50不能移动。一弹簧25支承在分段50和臂22的内臂22W之间。由于弹簧25最好是一膨胀弹簧(又称为压缩弹簧),臂22通常被弹簧25朝向上位置偏压。
一碎屑导向器52可安装在底座26和/或臂支承件24上。碎屑导向器52帮助切割操作产生的碎屑流导向。
底座26具有一工件支承件(或工作平面)27。优选地,防护组件28最好设置在工件支承件27上。优选地,操作者可以沿工件支承件27滑动和旋转防护组件28。
本领域技术人员涉及到美国专利5,720,096号,在这里结合进行参考,对防护组件28的优选实施例作详细的描述。防护组件28包括一个工件接触部分30,该工件接触部分30通过在工作平面27上形成的槽(通槽32)沿底座26导引,以及一驱动器36,操作者可转动该驱动器36来按照需要锁定或打开防护组件28。
一台钳爪40与防护组件28共同动作来夹紧工件。台钳爪40可以转动到使工件能夹持在相对于叶片14处于所需的角度方位。防护组件28和台钳爪40最好可以沿其各自的“Y”轴线旋转,以获得所需的角度,如30°或45°,因此切割锯可进行斜角切割。台钳爪40可通过台钳螺杆42的转动前进到一夹持位置。台钳螺杆42的轴线最好基本上平行于工作平面27。台钳爪40最好绕爪螺栓或销39转动,该爪螺栓或销39的尺寸使之可滑动地沿通槽32前进或缩回。
换句话说,防护组件28和台钳爪40都可设置在同一通槽32上。优选地,防护组件28和台钳爪40都可沿通槽32的全长移动。尽管如此,本领域技术人员将认识到,防护组件28和台钳爪40可设置在不同的槽上。
台钳锁闩44可以常规方式安装在锁闩支承件46上,以将台钳螺杆42锁定在其夹紧位置。夹持力可通过台钳手柄48的旋转来增大,该台钳手柄48固定地联接到台钳螺杆42上。本领域技术人员将认识到,台钳锁闩44可以脱开,使台钳螺杆42能朝防护组件28移动,然后接合以便将台钳螺杆42锁定在其夹持位置。
本申请的发明人已得知,最好将工件放置成使其中心在叶片中心的下面,或在叶片中心的前面,即当叶片14处于下部、切割位置时,工件朝向操作者或台钳锁闩44。因此,提供一个短于典型切割锯中的台钳螺杆的台钳螺杆42是有益的。参照图1-2,台钳螺杆42应足够短,致使台钳爪40与锁闩支承件46之间的最大长度约等于或短于离叶片中心的距离,即心轴64到锁闩支承件46之间的距离。当叶片14处于下部切割位置时最好对心轴64到锁闩支承件46之间的距离进行测量。通过提供这种与典型的长台钳螺杆不同的短的台钳螺杆,操作者必须将工件放置在一个良好的切割位置。另外,这种短台钳螺杆的制造需要更少的材料,降低了整个工具的成本。
参照图1,底座26还可具有一设置在其上的模制的橡胶腿54。另外,底座26可具有一橡胶索孔56,以容纳扳手58。
参照图3,电机11容纳在电机便携箱12中。电机11具有一驱动轴68。风扇70最好设置在驱动轴68上。初级齿轮71可设置在驱动轴68的端部,并与设置在心轴64端部上的二级齿轮72啮合。最好提供齿轮71、72来改变叶片14的转速。同样,最好将轴承73设置在电机便携箱12或臂22上,以支承心轴64。
通过在驱动轴68上提供一个风扇70,通过槽12S(图2)沿方向D将空气引入电机便携箱12中来冷却电机11。然后通过排气口66将空气排出。排气口66的形状最好能使空气沿方向B和/或C(图2)运行,对切割操作中产生的碎屑进行冷却和/或向切割锯10后部导向。风扇70最好是如图5所示的径向扇,其中叶片70F设置成大致径向方向。叶片70F也可以弯曲以进一步对空气进行导向。
在风扇70与叶片14之间的臂22上也可以设置槽(示示出),使空气沿电机轴线朝叶片14运行。这种空气流动也对叶片14的冷却有作用。
由于可使用不同的齿轮71、72来提供不同的切割速度或容纳不同的电机,齿轮可具有不同的宽度和/或尺寸。如果安装这些齿轮,叶片14会如此偏心以致叶片14不能插入槽26S中。但是,通过变换臂支承件24的位置,从而变换臂22和叶片14的位置,叶片14可以正确地放置,致使其可插入槽26S中。换句话说,现在参照图4A-4B,例如,如果安装了窄齿轮,或窄齿轮箱75N,臂支承件24可定位靠近叶片槽26S。如果安装了宽齿轮或附加齿轮或齿轮组或宽齿轮箱75N,则臂支承件24可定位到距叶片槽26S更远。
因此,臂支承件24可提供一个定位销24PP。定位孔26H可以预定的位置设置在底座26上。这样,如果安装了某种类型的齿轮或齿轮箱,装配切割锯的人们只需将臂支承件24的定位锁24PP放置在适当的定位孔26H中即可。本领域技术人员应该认识到,本发明的范围覆盖了可替换的实施例,其中在底座26上安设了定位销,同时在臂支承件24上安设了定位孔。
这种定位孔26H和定位销24PP在制造时还可以用作确定臂支承件24和底座26上的其它特征元件的精确位置的参考点。例如,以销24PP的位置为基础,可以确定用于接收臂24中的转动杆24P的孔的精确位置。然后人们就可以精确地加工这些孔。这种精确的结构有助于减少由于间隙变化导致的对正问题,从而实质上提高了工具的精度。以定位销24PP为基础,人们还可以确定从臂支承件24底部去掉多少材料。
类似地,用定位孔26H作为参考点,可将不同的特征,如通槽32,叶片槽26S,及与防护组件28互相作用的角度标记,精确地定位在底座26上。这种精确的结构有助于减少由于间隙变化导致的对正问题,从而实质上提高了工具的精度。
本领域技术人员会想到这里公开的装置的其它替换方式或附加物,如为了将电源线62保持到位而在臂22上设置接头60。但是,所有这些附加物和/或替换方式都视为本发明的等同物。
Claims (6)
1.一种制造锯的方法,该锯包括:一底座装置,一设置在底座装置上的臂支承件,一转动联接到臂支承件上的臂,和一由该臂支承的叶片装置,该叶片装置包括一个具有一中心的叶片,用来驱动该叶片的电机,及设置在电机和叶片之间的至少一个齿轮组,该方法包括以下步骤:
从多个具有不同宽度的齿轮组中选择一齿轮组;
在臂支承件和底座装置中的一个上提供至少一个定位销;
在臂支承件和底座装置中的另一个上提供至少两个定位孔,定位孔的数目多于定位销的数目;
根据选择的齿轮组,将至少一个定位销设置在至少两个定位孔中的一个上,以便适当地定位所述叶片使得所述叶片可以插入位于所述底座装置上的至少一个槽。
2.如权利要求1所述的方法,其中定位销设置在臂支承件上,在底座装置上设置所述至少两个定位孔。
3.如权利要求1所述的方法,其中还包括的步骤是,以设置在底座装置上的定位销或至少一个定位孔的位置为基准,将至少一个特征元件定位在底座装置上。
4.如权利要求1所述的方法,其中臂支承件包括至少一个用来接收转动杆的杆接收孔。
5.如权利要求4所述的方法,其中还包括的步骤是,以设置在臂支承件上的定位销或至少一个定位孔的位置为基准,将至少一个杆接收孔定位在臂支承件上。
6.如权利要求3所述的方法,其中定位销设置在臂支承件上,在底座装置上设置所述至少两个定位孔。
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US09/115,253 US6272960B1 (en) | 1998-06-03 | 1998-07-13 | Chop saw |
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CNB2004100857139A Expired - Fee Related CN100374233C (zh) | 1998-07-13 | 1999-07-13 | 制造锯的方法 |
CNB99110966XA Expired - Fee Related CN1204992C (zh) | 1998-07-13 | 1999-07-13 | 切割锯 |
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CN (3) | CN100374233C (zh) |
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- 1999-07-13 CN CNB2004100857139A patent/CN100374233C/zh not_active Expired - Fee Related
- 1999-07-13 BR BR9916769-7A patent/BR9916769A/pt not_active IP Right Cessation
- 1999-07-13 EP EP08103152A patent/EP1982786B1/en not_active Expired - Lifetime
- 1999-07-13 CN CNB99110966XA patent/CN1204992C/zh not_active Expired - Fee Related
- 1999-07-13 EP EP99305554A patent/EP0972602B1/en not_active Expired - Lifetime
- 1999-07-13 EP EP07102299A patent/EP1792681A3/en not_active Withdrawn
- 1999-07-13 EP EP05009537A patent/EP1586398A3/en not_active Withdrawn
- 1999-07-13 CN CNA2004100857124A patent/CN1593825A/zh active Pending
- 1999-07-13 KR KR1019990028164A patent/KR100604698B1/ko not_active IP Right Cessation
- 1999-07-13 DE DE69928470T patent/DE69928470T2/de not_active Expired - Lifetime
- 1999-08-16 TW TW088111855A patent/TW421614B/zh not_active IP Right Cessation
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2001
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2003
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2006
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CN107548331A (zh) * | 2015-03-12 | 2018-01-05 | 罗伯特·博世有限公司 | 带有减小的电气噪声的电动工具马达 |
US10493543B2 (en) | 2015-03-12 | 2019-12-03 | Robert Bosch Tool Corporation | Power tool motor with reduced electrical noise |
Also Published As
Publication number | Publication date |
---|---|
EP0972602A2 (en) | 2000-01-19 |
JP2007054951A (ja) | 2007-03-08 |
CN1593825A (zh) | 2005-03-16 |
EP1792681A3 (en) | 2007-09-26 |
CN1204992C (zh) | 2005-06-08 |
CN1250705A (zh) | 2000-04-19 |
US6272960B1 (en) | 2001-08-14 |
KR20000011673A (ko) | 2000-02-25 |
EP1982786B1 (en) | 2011-11-02 |
EP0972602B1 (en) | 2005-11-23 |
US20010008098A1 (en) | 2001-07-19 |
US20030209107A1 (en) | 2003-11-13 |
KR100604698B1 (ko) | 2006-07-28 |
BR9916769A (pt) | 2001-09-04 |
DE69928470T2 (de) | 2006-08-10 |
EP1586398A3 (en) | 2006-02-08 |
EP1982786A1 (en) | 2008-10-22 |
TW421614B (en) | 2001-02-11 |
CN1593826A (zh) | 2005-03-16 |
JP2000052134A (ja) | 2000-02-22 |
EP0972602A3 (en) | 2003-02-26 |
JP4430650B2 (ja) | 2010-03-10 |
US6609442B2 (en) | 2003-08-26 |
US7562610B2 (en) | 2009-07-21 |
EP1586398A2 (en) | 2005-10-19 |
DE69928470D1 (de) | 2005-12-29 |
EP1792681A2 (en) | 2007-06-06 |
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