WO2013131350A1 - 一种双片锯的锯片结构 - Google Patents

一种双片锯的锯片结构 Download PDF

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Publication number
WO2013131350A1
WO2013131350A1 PCT/CN2012/079127 CN2012079127W WO2013131350A1 WO 2013131350 A1 WO2013131350 A1 WO 2013131350A1 CN 2012079127 W CN2012079127 W CN 2012079127W WO 2013131350 A1 WO2013131350 A1 WO 2013131350A1
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WO
WIPO (PCT)
Prior art keywords
saw
saw blade
blade
rib
double
Prior art date
Application number
PCT/CN2012/079127
Other languages
English (en)
French (fr)
Inventor
冯勇
Original Assignee
宁波天和电动工具有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN2012200873127U external-priority patent/CN202539691U/zh
Priority claimed from CN2012200873254U external-priority patent/CN202539692U/zh
Application filed by 宁波天和电动工具有限公司 filed Critical 宁波天和电动工具有限公司
Publication of WO2013131350A1 publication Critical patent/WO2013131350A1/zh

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    • 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
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/10—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a plurality of circular saw blades
    • 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
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/025—Details of saw blade body

Definitions

  • the utility model relates to a double-saw saw, in particular to a saw blade structure of a double-piece saw.
  • a two-blade saw is a hand-held cutting tool that is equipped with two blades of opposite rotational directions on the same axis. Since the two blades are rotated in opposite directions, the recoil force during the cutting work is greatly reduced, and the cutting efficiency and the safety of use are improved. Different saw blades are used, and the double saw can be used for cutting different materials such as wood, metal, marble and ceramic tiles.
  • a common method is to machine a ring rib on a saw blade or punch a few central symmetrical bosses.
  • the rib (or boss) face of the saw blade rubs against another saw blade to achieve the separation of the two saw blades. purpose. Since the annular ribs are distributed in the circumferential direction of the saw blade, the heat generated by the saw blade during the cutting process is blocked between the two saw blades, and fine chips may enter the ring and cannot be discharged to increase the friction between the saw blades. . Long-term operation of the double saw blade in a high-calorie environment may cause problems such as deformation of the saw blade and cause damage to the saw blade.
  • the utility model provides a saw blade structure of a double-saw saw according to the deficiencies in the prior art.
  • the saw blade structure of the double-saw saw not only isolates the two saw blades, but also has convenient chip removal and good heat dissipation performance.
  • a saw blade structure of a two-blade saw comprising a first saw blade and a second saw blade rotating about the same axis and rotating in opposite directions, the first saw blade and the second saw blade being provided with serrations, wherein One of the blade edges is provided with a rib, the rib is disposed between the serrations, and the rib is provided with three or more, and the central axis of the rib does not pass through the center of the center of the saw blade Axis.
  • the angle ⁇ between the point of the center of the saw blade and the center of the saw blade and the central axis on the central axis of the rib is 10 to 70°. .
  • the height H of the rib is 0.1 to 0.5 mm.
  • the cross section of the rib is a trapezoid with a circular arc transition.
  • the utility model is provided with a rib at the edge of a saw blade, and the rib acts to isolate the first saw blade and the second saw blade in the work of the double-saw saw, and at the same time increases the chip chip removal and heat dissipation. effect.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a schematic view of the structure of the first saw blade.
  • Figure 3 is a schematic view of the structure of the second saw blade.
  • Figure 4 is an enlarged cross-sectional view taken along the line A-A in Figure 3.
  • Figure 5 is an enlarged view of the first saw blade and the second saw blade.
  • a saw blade structure of a two-piece saw includes a first saw blade 1 and a second saw blade that rotate about the same axis and rotate in opposite directions. 3, the first saw blade 1 and the second saw blade 3 are both provided with serrations.
  • the edge of the second saw blade 3 is disposed on one side wall of the first saw blade 1 with three or more ribs 5, and the rib 5 Set between sawtooth. They are symmetrically distributed in the center of the second saw blade 3.
  • the ribs 5 are provided with 28 pieces. It can be understood that the ribs 5 can also be used.
  • the first saw blade 1 is disposed on a side wall of the second saw blade 3.
  • the rib 5 is located at the edge of the second saw blade 3, and the central axis of the rib 5 does not pass through the center of the saw blade B In the central axis, the angle ⁇ between the point of the center of the blade 5 on the central axis of the rib 5 and the center of the saw blade 100 and the central axis 200 is 10 to 70°.
  • the rib 5 not only functions to separate the first saw blade 1 and the second saw blade 3, but more importantly because of the rib 5 The central axis does not pass through the center B of the saw blade, so the rib 5 will act as a centrifugal vane due to the high-speed rotation of the saw blade, and discharge the wood chips and hot air, thereby achieving good chip evacuation and heat dissipation. That is, the rib 5 In the work of the double-blade saw, the function of isolating the first saw blade 1 and the second saw blade 3 is increased, and at the same time, the effect of chip chip removal and heat dissipation is increased.
  • the rib 5 has a trapezoidal cross section perpendicular to its central axis, and the height H of the rib 5 is 0.1 to 0.5 mm. .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)

Abstract

一种双片锯的锯片结构，包括在同一轴线上旋转的方向相反的第一锯片（1）和第二锯片（3），其中一片锯片的齿根圆部上设置有凸筋（5），并且所述凸筋设置有三个或三个以上，所述凸筋的中心轴线不经过所述锯片圆心。由于该凸筋在双片锯的工作中起到了隔离第一锯片和第二锯片的作用，因此提高了锯片的排屑、散热效果。

Description

一种双片锯的锯片结构
技术领域
本实用新型涉及一种双片锯，尤其涉及一种双片锯的锯片结构。
背景技术
双片锯是一种在同一轴线上装配有两片旋转方向相反的锯片的手持式切割工具。由于两片锯片旋转方向相反，使切割工作时的反冲力大大减小，提高了切割的效率和使用的安全性。选用不同的锯片，双片锯可用于木材、金属、大理石、瓷砖等不同材质的切割。
由于双片锯的特殊的工作特性，它要求两锯片间必须有隔离结构使两锯片的切割刀头既不能互相干涉又尽可能地紧贴。常用的方法是在一片锯片上加工一圆环凸筋或冲制几个中心对称的凸台，锯片的凸筋（或凸台）面与另一锯片摩擦从而达到两锯片隔离的目的。由于环形凸筋分布在锯片的周向，因此，锯片在切割过程中产生的热量被阻隔在两个锯片之间，同时细小的切屑可能进入环内不能排出从而增加锯片间的摩擦。双锯片长期在高热量的环境下工作容易导致锯片变形等问题，造成锯片的损坏。
实用新型内容
本实用新型针对现有技术中的不足，提供了一种双片锯的锯片结构，该双片锯的锯片结构不仅使两锯片隔离，而且排屑方便，具有良好的散热性能。
为了解决上述技术问题，本实用新型通过下述技术方案得以解决：
一种双片锯的锯片结构，包括围绕同一轴线旋转且旋转方向相反的第一锯片和第二锯片，所述第一锯片和第二锯片均设置有锯齿，其特征在于，其中一片锯片边缘设置有凸筋，所述凸筋设置在锯齿之间，并且所述凸筋设置有三个或三个以上，所述凸筋的中心轴线不经过所述锯片圆心所在的中心轴线。
上述技术方案中，所述凸筋中心轴线上的近锯片圆心的点与锯片圆心的连线和中心轴线的夹角θ为 10 ～ 70° 。
上述技术方案中，所述凸筋的高度 H 为 0.1 ～ 0.5mm 。
上述技术方案中，所述凸筋的截面为一圆弧过渡的梯形。有益效果：本实用新型与现有技术相比，具有如下有益效果：
本实用新型在一片锯片的边缘设置有凸筋，该凸筋在双片锯的工作中起到了隔离第一锯片和第二锯片的作用，同时又增加了锯片排屑、散热的效果。
附图说明
图 1 为本实用新型结构示意图。
图 2 为第一锯片的结构示意图。
图 3 为第二锯片的结构示意图。
图 4 为图 3 中 A-A 向放大后的剖视图。
图 5 为第一锯片和第二锯片配合的放大图。
具体实施方式
下面结合附图与具体实施方式对本实用新型作进一步详细描述：
见图 1 ～图 5 ，一种双片锯的锯片结构，包括围绕同一轴线旋转且旋转方向相反的第一锯片 1 和第二锯片 3 ，所述第一锯片 1 和第二锯片 3 均设置有锯齿。
所述第二锯片 3 的边缘靠近第一锯片 1 的一侧壁上设置有三个或三个以上的凸筋 5 ，所述凸筋 5 设置在锯齿之间。它们以第二锯片 3 的中心对称分布。
作为本实用新型的一个具体实施例，所述凸筋 5 设置有 28 个。可以理解的是，也可以将所述凸筋 5 设置在所述第一锯片 1 靠近第二锯片 3 的一侧壁上。
所述凸筋 5 位于第二锯片 3 的边缘，并且所述凸筋 5 的中心轴线不经过所述锯片圆心 B 所在的中心轴线，所述凸筋 5 中心轴线上的近锯片圆心的点与锯片圆心的连线 100 和中心轴线 200 的夹角θ为 10 ～ 70° 。
在锯片旋转过程中，所述凸筋 5 不仅起到隔开第一锯片 1 和第二锯片 3 的作用，更主要的是由于凸筋 5 的中心轴线不经过所述锯片圆心 B ，因此凸筋 5 会因为锯片的高速旋转产生离心风叶作用，将木屑和热风排出，从而起到良好的排屑和散热作用。即凸筋 5 在双片锯的工作中起到了隔离第一锯片 1 和第二锯片 3 的作用，同时又增加了锯片排屑、散热的效果。
所述凸筋 5 垂直于其中心轴线的截面成一梯形，并且所述凸筋 5 的高度 H 为 0.1 ～ 0.5mm 。

Claims (4)

  1. 一种双片锯的锯片结构，包括围绕同一轴线旋转且旋转方向相反的第一锯片（1）和第二锯片（3），所述第一锯片（1）和第二锯片（3）均设置有锯齿，其特征在于，其中一片锯片边缘设置有凸筋（5），并且所述凸筋（5）设置有三个或三个以上，所述凸筋（5）设置在锯齿之间，所述凸筋（5）的中心轴线（200）不经过所述锯片圆心（B）所在的中心轴线。
  2. 如权利要求1所述的双片锯的锯片结构，其特征在于，所述凸筋（5）中心轴线上的近锯片圆心的点与锯片圆心的连线（100）和中心轴线（200）的夹角θ为10～70°。
  3. 如权利要求1所述的双片锯的锯片结构，其特征在于，所述凸筋（5）的高度H为0.1～0.5mm。
  4. 如权利要求1所述的双片锯的锯片结构，其特征在于，所述凸筋（5）的截面为一圆弧过渡的梯形。
PCT/CN2012/079127 2012-03-09 2012-07-25 一种双片锯的锯片结构 WO2013131350A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2012200873127U CN202539691U (zh) 2012-03-09 2012-03-09 双片锯的锯片结构
CN201220087325.4 2012-03-09
CN2012200873254U CN202539692U (zh) 2012-03-09 2012-03-09 一种双片锯的锯片结构
CN201220087312.7 2012-03-09

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WO2013131350A1 true WO2013131350A1 (zh) 2013-09-12

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217208A (ja) * 1982-06-07 1983-12-17 Kyokuto Shokai:Kk ドリルビツト
WO2002092298A1 (en) * 2001-05-16 2002-11-21 Nord Center I Kalmar Ab Pair of saw blades
CN101486116A (zh) * 2009-02-06 2009-07-22 胡桂强 一种电动切割机
CN102211230A (zh) * 2010-04-06 2011-10-12 陈重光 可双向锯切的锯片
CN102350547A (zh) * 2011-10-17 2012-02-15 卢庆玉 一种适配于双锯片切割机的双锯片结构

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217208A (ja) * 1982-06-07 1983-12-17 Kyokuto Shokai:Kk ドリルビツト
WO2002092298A1 (en) * 2001-05-16 2002-11-21 Nord Center I Kalmar Ab Pair of saw blades
CN101486116A (zh) * 2009-02-06 2009-07-22 胡桂强 一种电动切割机
CN102211230A (zh) * 2010-04-06 2011-10-12 陈重光 可双向锯切的锯片
CN102350547A (zh) * 2011-10-17 2012-02-15 卢庆玉 一种适配于双锯片切割机的双锯片结构

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