CN111618615B - 刀把结构 - Google Patents
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Abstract
本发明刀把结构,包含一刀杆、一转接杆及一螺帽,其中所述刀杆前端设一内锥孔与转接杆连接,所述的转接杆,其一端设一锥杆,所述锥杆的端面设有一内螺孔,供拉杆螺栓锁紧,所述转接杆另一端设另一内螺孔,该转接杆紧邻着锥杆设有一横向贯穿的定位孔,所述定位孔两端设为圆柱孔,两端的圆柱孔之间设为颈缩孔,形成一具有圆弧形状的颈缩孔,该两端圆柱孔之间所设的颈缩孔亦得设为圆柱孔状的定位圆柱孔,所述的螺帽,其一端设有内螺孔,另端设有贯穿的轴孔,所述的轴孔设有一横向贯穿的沉头孔及一内螺孔,所述的沉头孔及内螺孔之间具有一微小高度落差的偏心。本发明的刀把,其使用转接杆可更换锁固不同尺寸的刀头,且所述的转接杆的长度亦可改变。
Description
技术领域
本发明为一种刀把的夹持结构改良,尤指一种改良刀把夹持刀具尺寸的局限,具有锁固刚性高且同一刀杆可以更换不同尺寸刀头的刀把结构。
背景技术
一般习用具有弹性筒夹的刀把,如图10、11所示为ER直柄弹性筒夹刀把,主要使用于加工机的动力刀塔或是装置于加工机的主轴上使用,所述的刀把8主要包含一刀杆81,该刀杆81前端设有一夹持结构,该夹持结构包含该刀杆81前端内锥孔811,其内容至一弹性筒夹82,该弹性筒夹82内可供一直柄的刀具6(诸如铣刀、钻头、攻牙刀…等)容置入,再由一螺帽83锁固,利用螺帽83迫使弹性筒夹82收缩夹持刀具6,借以快速装、拆刀具6的功能;请参阅图11,例如ER16弹性筒夹而言,其可夹持刀具的刀杆直径尺寸范围为1~10mm,每种规格的弹性筒夹82可以夹持的收缩范围有限,可夹持刀杆尺寸受弹性筒夹限制,且此筒夹构造最大夹持尺寸只能到10mm,因此单一的弹性筒夹82的适用范围有限,面对加工型态愈趋复杂及多样化的加工环境,使用者必须采购较多尺寸的弹性筒夹82以便能应付日新月异,多样化的产品加工。
习知具有弹性筒夹的刀把,其前端的夹头结构设计主要以弹性筒夹为主要的夹持机构,搭配螺帽锁固刀具的刀杆,然而每种规格的弹性筒夹82可以夹持的收缩范围仅有限,使用者必须采购较多尺寸的弹性筒夹82,徒增加工成本。
发明内容
本发明的目的在于提供一种刀把结构,改良刀把夹持刀具尺寸的局限,锁固刚性高且同一刀杆可以更换不同尺寸刀头。
为实现上述目的,本发明采用以下技术手段。
一种刀把结构,包含一刀杆、一转接杆及一螺帽,其中所述的刀杆设有一贯穿的通孔,该通孔前端设为一内锥孔,该刀杆的一端设有外螺纹,所述的转接杆,其一端设有一锥杆,该锥杆与刀杆的内锥孔对应,所述的锥杆的端面设有一内螺孔,可供拉杆螺栓锁紧,所述的转接杆另一端设有另一内螺孔,该转接杆紧邻着锥杆设有一横向贯穿的定位孔,所述的定位孔两端设为圆柱孔,两端圆柱孔之间设为颈缩孔,其两端尺寸连接圆柱孔,形成一具有圆弧形状的颈缩孔,该两端圆柱孔之间所设的颈缩孔亦得设为圆柱孔状的定位圆柱孔,所述的螺帽,其一端设有内螺孔,另一端设有贯穿的轴孔,所述的轴孔设有一横向贯穿的沉头孔及一内螺孔,所述的沉头孔及内螺孔之间具有一微小高度落差的偏心e,该偏心e距离为0.05~0.1mm之间。
进一步,该转接杆的定位孔两端所设的圆柱孔直径约大于螺丝的轴径20%。
进一步,该颈缩孔的中段位置的缩孔直径约大于螺丝的轴径0.1mm以下。
本发明的刀把,使用ER16弹性筒夹规格的10mm刀杆,转接杆可更换锁固刀头尺寸D的最大刀径为16mm,因此可应用的刀头尺寸D范围因此增加了60%或者定位孔两端圆柱孔之间改设为圆柱状的定位圆柱孔,且与螺丝采紧密配合,提升刚性,可使用的刀头尺寸D的最大刀径可提升至30mm,提升3倍,除此之外,所述的转接杆的长度亦可改变,可增加加工的应用范围,加工更加弹性。
通过上述技术手段,本发明通过定位孔与转接杆的配合,及沉头孔及内螺孔之间具有一微小高度落差的偏心的设计,达到锁固刚性高且同一刀杆可以更换不同尺寸刀头的效果。
附图说明
图1为本发明的立体图;
图2为本发明的组合剖视图;
图3为本发明不同螺帽的应用例图;
图4为图2的放大组合剖视图;
图5为本发明多种尺寸刀头锁固的应用实施例图;
图6为本发明转接杆的应用实施例图;
图7为本发明转接杆的定位孔设为圆柱孔的平面***图;
图8为本发明转接杆的定位孔设为圆柱孔的组合平面图;
图9为本发明搭配不同形式螺帽及多种加工功能刀头锁固的应用实施例***图;
图10为***面***图;
图11为***面图。
【符号说明】
10 刀杆 11 通孔 12 内锥孔 13 外螺纹 20 转接杆 21 锥杆 211、22 内螺孔23 定位孔 231 圆柱孔 232 颈缩孔 233定位圆柱孔 30 螺帽 31、34 内螺孔 32 轴孔 33沉头孔 35 槽孔 36 扳手 40 螺丝 50 刀头 6 刀具 7 拉杆螺栓 8 刀把 81 刀杆 811内锥孔 82 弹性筒夹 83 螺帽 e 偏心 D 刀头尺寸 d1 直径 d2 孔径 L 长度。
具体实施方式
请参阅图1、2所示,本发明刀把结构,包含一刀杆10、转接杆20及一螺帽30,其中:
刀杆10,如一般市售的直柄刀杆或是锥柄刀杆,设有一贯穿的通孔11,该通孔11前端设为一内锥孔12,该刀杆10的一端设有外螺纹13;
转接杆20,其一端设有一锥杆21,该锥杆21与刀杆10的内锥孔12对应,所述的锥杆21的端面设有一内螺孔211,可供拉杆螺栓7锁紧,所述的转接杆20另端设有另一内螺孔22,可供一铣刀或是钻头等刀具的刀头50锁固(如图5所示),该转接杆20紧邻着锥杆21设有一横向贯穿的定位孔23,该定位孔23的两端设为圆柱孔231,所述的圆柱孔231直径约大于螺丝40的轴径20%,使得该螺丝40容置入时具有较大的活动空间,两端的圆柱孔231之间设为颈缩孔232,所述的颈缩孔232其中段的缩孔尺寸为最小,缩孔直径约大于螺丝40的轴径0.1mm以下,而两端尺寸为最大,且两端尺寸连接圆柱孔231,形成一具有圆弧形状的颈缩孔232。
螺帽30,其一端设有内螺孔31,另一端设有贯穿的轴孔32,所述的轴孔32设有一横向贯穿的沉头孔33及一内螺孔34,所述的沉头孔33及内螺孔34之间具有一微小高度落差的偏心e,所述的偏心e距离依据本实施例约是0.05~0.1mm之间,而且所述的内螺孔34的高度位置高于沉头孔33的高度位置。
请参阅图1所示,本发明的螺帽30得以六角螺帽使用之外,亦得以搭配不同结构形状的螺帽30使用,如图3所示,该螺帽30外周缘环设有数个槽孔35,搭配扳手36旋紧或松卸螺帽30,此外该螺帽30所设的沉头孔33及内螺孔34得设为一组以上且环状分布于螺帽30的外周缘上,以本实施例得以设置三组,可供使用者于不同的角度使用。
请参阅图2、4所示,本发明的转接杆20套置入所述的螺帽30内,且使定位孔23与螺帽30的沉头孔33及内螺孔34对应,由螺丝40锁入,由于螺帽30的沉头孔33及内螺孔34之间具有一微小高度落差的偏心e,依据本实施例偏心e距离约是0.05~0.1mm之间,也就是所述的内螺孔34的高度位置高于沉头孔33的高度位置,一旦螺丝40逐渐锁入位置较高的内螺孔34时,该螺丝40则会以内螺孔34为支点产生往上(暨顺时针方向微量偏转)偏转的趋势,并使得所述的螺丝40逐渐朝上推顶转接杆20的颈缩孔232,颈缩孔232的缩孔形状呈圆弧形,故所述的螺丝40单点与颈缩孔232接触,并推顶该转接杆20朝上移动,并将所述的螺帽30锁入刀杆10的外螺纹13,借由刀杆10的内锥孔12朝上推顶所述的转接杆20与刀杆10结合,据此,所述的转接杆20受到螺丝40的推顶亦受到螺帽30的朝上推顶锁固,达到双重锁固的功效。
请参阅图5所示,本发明改变了刀把的结构型态,所述的转接杆20得与不同尺寸的刀头50连接锁固,依据本实施例,使用装设ER16弹性筒夹规格的刀杆10,其可锁固连接刀头尺寸ψD的最大刀径尺寸范围为16mm,可应用的刀头尺寸ψD范围因此增加了60%,除此之外,如图6所示,所述的转接杆20的长度亦可改变,可增加加工的应用范围。
前述本发明与ER16刀杆弹性筒夹规格的刀杆10,其可锁固连接刀头尺寸ψD的最大刀径尺寸范围为16mm,主要是该转接杆20与螺帽30锁固的刚性,如欲增加ψD的最大刀径尺寸范围,则可提高转接杆20与螺帽30锁固的刚性,请参阅图7所示,该转接杆20紧邻着锥杆21所设横向贯穿的定位孔23,其两端设为直径略大于螺丝40直径ψd1的圆柱孔231,圆柱孔231之间设为孔径ψd2较小的定位圆柱孔233,有别于前述的颈缩孔232,所述的定位圆柱孔233的孔径ψd2约大于螺丝40的直径ψd1,孔径的公差范围约在0至0.05mm之间,使得该螺丝40与定位圆柱孔233为紧密配合的接触,该定位圆柱孔233与该螺丝40将会是紧密地配合。
请参阅图8所示,该螺丝40螺入螺帽30偏心设置的内螺孔34时,该螺丝40将会在定位圆柱孔233处推顶该转接杆20朝上,使得所述的转接杆20与刀杆10的内锥孔12更紧密地配合在一起,而且该定位圆柱孔233与螺丝40接触的面积更大,如图7所示,该定位圆柱孔233的长度L就是与螺丝40的接触长度,接触长度L越长且为紧密配合,因此转接杆20与刀杆10的内锥孔12锁紧的刚性就会提升,这将会相对地提升刀具的切削刚性,进而可以增加刀头尺寸ψD的最大刀径尺寸,根据实际地切削实验,使用装设ER16弹性筒夹规格(10mm)的刀杆10,其可锁固连接刀头尺寸ψD的最大刀径尺寸范围可提升至30mm,可应用的刀头尺寸ψD范围因此增加了3倍。
请参阅图9所示,本发明可搭配不同形式的螺帽30以扳手36锁紧或松卸不同加工功能系列的刀头50,得以组合出更多的应用例,深具实用性。
综上所述,本发明刀把结构改变传统使用弹性筒夹夹持刀具的技术,使用一转接杆与螺帽内部径向锁固的螺栓结构,达到锁固刚性佳以及所述的转接杆可以变更不同尺寸的刀头锁固,提升从增加1.6倍至3倍范围的刀头锁固使用,对使用者而言更快速适应不断改变的工件加工条件及环境,使刀具切削范围提升,深具产业利用性、实用性及进步性的功效。
Claims (5)
1.一种刀把结构,其特征在于,包含:
一刀杆,设有一贯穿的通孔,该通孔前端设为一内锥孔,该刀杆的一端设有外螺纹;
一转接杆,其一端设有一锥杆,该锥杆与该刀杆的内锥孔对应,所述锥杆的端面设有一内螺孔,供拉杆螺栓锁紧,所述的转接杆另一端设有另一内螺孔,该转接杆紧邻着该锥杆设有一横向贯穿的定位孔,所述的定位孔两端设为圆柱孔,两端的圆柱孔之间设为颈缩孔,其两端尺寸连接该圆柱孔,形成一具有圆弧形状的颈缩孔;
一螺帽,其一端设有内螺孔,另一端设有贯穿的轴孔,所述的轴孔设有一横向贯穿的沉头孔及一内螺孔,所述的沉头孔及内螺孔之间具有一微小高度落差的偏心;
所述转接杆套置入所述的螺帽内,且使定位孔与螺帽的沉头孔及内螺孔对应,由螺丝锁入,内螺孔的高度位置高于沉头孔的高度位置。
2.如权利要求1所述的刀把结构,其特征在于:该转接杆的定位孔两端所设的圆柱孔直径大于螺丝的轴径20%。
3.如权利要求1所述的刀把结构,其特征在于:该颈缩孔的中段位置的缩孔直径大于螺丝的轴径0.1mm以下。
4.如权利要求1所述的刀把结构,其特征在于:该定位孔两端设为直径大于螺丝直径的圆柱孔,该圆柱孔之间设为孔径较小的定位圆柱孔。
5.如权利要求1所述的刀把结构,其特征在于:该沉头孔及内螺孔间的偏心距离为0.05~0.1mm之间,所述的内螺孔的高度位置高于该沉头孔的高度位置。
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US20200269329A1 (en) | 2020-08-27 |
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TWI679080B (zh) | 2019-12-11 |
EP3702076B1 (en) | 2024-02-21 |
KR102162269B1 (ko) | 2020-10-07 |
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