WO2012079194A1 - Dispositif de scie électrique double lame - Google Patents

Dispositif de scie électrique double lame Download PDF

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Publication number
WO2012079194A1
WO2012079194A1 PCT/CN2010/002046 CN2010002046W WO2012079194A1 WO 2012079194 A1 WO2012079194 A1 WO 2012079194A1 CN 2010002046 W CN2010002046 W CN 2010002046W WO 2012079194 A1 WO2012079194 A1 WO 2012079194A1
Authority
WO
WIPO (PCT)
Prior art keywords
saw blade
saw
double
steel ball
saw blades
Prior art date
Application number
PCT/CN2010/002046
Other languages
English (en)
Chinese (zh)
Inventor
陈重光
Original Assignee
新杰亚洲有限公司
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
Application filed by 新杰亚洲有限公司 filed Critical 新杰亚洲有限公司
Priority to PCT/CN2010/002046 priority Critical patent/WO2012079194A1/fr
Publication of WO2012079194A1 publication Critical patent/WO2012079194A1/fr

Links

Classifications

    • 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 invention relates to a sawing device with a double saw blade, which is mainly provided with a plurality of steel balls between the double saw blades, so that the interval between the two saw blades is called a rolling support to reduce friction and avoid the saw blade Overheat deformation, improve cutting accuracy and the life of the saw blade.
  • the double saw blade sawing device simultaneously drives a first saw blade and a second saw blade to rotate in the opposite direction, and saws the work piece.
  • Figure 1A shows the structure of a conventional double saw blade.
  • the first saw blade 50 and the cutter heads 52, 53 of the second saw blade 51 are in contact.
  • the cutter heads 52, 53 are easily produced due to friction.
  • the high heat is generated, and the cutter heads 52, 53 of the two saw blades 50, 51 are prone to collision, thereby causing the cutter heads 52, 53 to fall off or break. , so that the product reduces the life of the cockroach.
  • the two saw blades 50, 51 shown in FIG. 1A are slightly Microsoftized and deformed by the friction heat generation due to frictional heat generation, so that the first saw blade 50 and the first saw blade 50 are
  • the pitch of the cutter heads 52, 53 of the second saw blade 51 is slightly increased, causing the occurrence of the shavings 54 between the first saw blade 50 and the second saw blade 51, as shown in Fig. 1B.
  • the width of the cutting line will increase, affecting the cutting accuracy.
  • the gap between the cutter head 52 of the first saw blade 50 and the second saw blade 51 and the cutter head 53 is getting larger and larger, and the situation in which the shaving fin 54 is sandwiched becomes more and more serious, and finally the shaving fin 54 fills the first saw.
  • the gap between the sheet 50 and the second saw blade 51 causes the motor to be overloaded and burned out and can no longer be used.
  • Fig. 2A shows a double saw blade structure disclosed in WO 08/057028, which mainly solves the problem that the saw blade structure shown in Fig. 1B is easy to produce a clip, and the cutter head is easily damaged.
  • the double saw blade structure shown in FIG. 2A is mainly provided with a ring of ridges 65 on the second saw blade 61, by which the ribs 65 abut against the inner side surface 64 of the first saw blade 60 to limit the two saws.
  • the ridges 65 are arranged such that the distance between the cutter heads 62, 63 of the two saw blades 60, 61 is safe and can be applied normally (0.03 mm). And, by virtue of the stop of the ridge 65, there is no possibility of a chipping between the two saw blades 60, 61.
  • the ridge 65 may wear (see FIG. 2B), or the first saw blade 60 wear occurs (see Fig. 2C).
  • the cutter heads 62, 63 collide. In this case, the sawing device can no longer function normally, and new saw blades 60, 61 must be replaced.
  • FIG. 3A and Figure 3B The applicant of the present invention has previously developed a structure for preventing the double saw blade from being touched.
  • a plurality of steel balls 72 are disposed between the first saw blade 70 and the second saw blade 71, and the steel balls 72 are disposed at equal angular intervals.
  • the steel ball 72 maintains a good cutting pitch between the first saw blade 70 and the second saw blade 71, and the saw blade 70, 71 does not overheat and soften and deform.
  • the steel ball 72 is prone to wear after long-term use, and the steel ball 72 must be replaced. If the life of the steel ball 72 can be extended, the use of the saw device can be facilitated.
  • the components numbered 73 and 74 in Figure 3A are cutter heads. Invention disclosure
  • the main object of the present invention is to provide a sawing device with a double saw blade, which is provided with a plurality of steel balls between two saw blades to maintain a good cutting pitch between the two saw blades without causing a saw blade Overheating and softening deformation.
  • a secondary object of the present invention is to provide an electric saw device having a double saw blade, which increases the frictional resistance of each steel ball by relatively increasing the number of steel balls, and is less prone to wear and improves the service life.
  • the utility model provides a sawing device with a double saw blade, and the first saw blade and the second saw blade disposed on the saw device are reversely rotated.
  • the front end faces of the first saw blade and the second saw blade are each provided with a circular annular groove on the front and rear opposite sides.
  • the center of each annular groove is the axis of rotation of the corresponding saw blade.
  • a plurality of steel balls are disposed between the first saw blade and the second saw blade, and two ends of each of the steel balls are respectively introduced into the annular groove of the first saw blade and the second saw blade, and the first saw blade can be defined The distance from the second saw blade.
  • the electric saw device with a double saw blade provided by the present invention, wherein the number of steel balls between the first saw blade and the second saw blade is based on the principle that the entire annular groove cannot be completely covered, and the annular groove is not
  • the arc angle of the range of the steel balls is set to be less than 120°, so that the steel balls can produce three-point support at an angle of 120° in any rolling distribution. . '
  • the electric saw device with a double saw blade provided by the invention, wherein the portion of the steel ball introduced into the annular concave portion is smaller than half the size of the steel ball, so that the rolling of the steel ball is smoother.
  • the electric saw device with double saw blade provided by the invention, wherein the steel ball has magnetic properties and can be adsorbed On the saw blade, it is helpful to assemble the steel ball
  • Figure 1A is a cross-sectional view of a conventional double saw blade structure
  • Figure 1B is a state diagram of the situation in which the clip occurs in Figure 1A;
  • FIG. 2A is a double saw blade structure disclosed in WO 08/057028;
  • FIG. 2B and FIG. 2C are state diagrams of the wear and tear of the saw blade of FIG. 2A;
  • FIG. 3A is a structural view of the double saw blade for sandwiching the steel ball;
  • Figure 3B is a rear view of the saw blade provided with steel balls
  • Figure 4 is a cross-sectional view showing an embodiment of the electric saw device of the present invention.
  • Figure 5 is an exploded view of the double saw blade of the present invention.
  • Figure 6 is a front elevational view of the second saw blade of the present invention.
  • Figure 7 is a rear elevational view of the first saw blade of the present invention.
  • Figure 8 is a partial enlarged view of the first saw blade and the second saw blade.
  • FIG. 4 is a cross-sectional view showing the structure of the electric saw device of the present invention.
  • the sawing device 1 is driven by a motor power shaft 10 to rotate the two gears 11, 12 at an equal rate.
  • One of the gears 11 is fixed to a power output shaft 13, and the power output shaft 13 is fixed to a small transmission shaft 14, which can drive a saw blade 20 to rotate.
  • the other gear 12 is fixed to a large drive shaft 15, which drives a second saw blade 30 to rotate.
  • the first and second saw blades 20, 30 are reversely rotated.
  • FIG. 5 Please refer to FIG. 5 for an exploded view of the first saw blade 20 and the second saw blade 30.
  • the inner end surface (rear end surface) of the first saw blade 20 and the inner end surface (front end surface) of the second saw blade 30 are provided with a circular annular groove 21, 31 in front and rear relative patterns, see Figure 6 and Figure 7.
  • the diameter of the annular H groove 21 of the first saw blade 20 is equal to the diameter of the annular groove 31 of the second saw blade 30, and the center of each annular groove 21, 31 is the axis of rotation of the corresponding saw blade 20, 30. .
  • a plurality of steel balls 40 are disposed between the first saw blade 20 and the second saw blade 30, and two ends of each of the steel balls 40 are respectively introduced into the annular groove 21 of the first saw blade 20 and the second saw blade 30, 31 is held by the first saw blade 20 and the second saw blade 30.
  • the steel ball 40 can define a good spacing between the first saw blade 20 and the second saw blade 30, as shown in Fig. 8.
  • the first saw blade 20 and the second saw blade 30 are rolled by the steel ball 40, so that the contact between the two saw blades 20, 30 is a rolling contact, the friction generated is small, and the temperature is not Will rise too high.
  • the two saw blades 20 and 30 do not soften due to overheating during the cutting work, which can improve the cutting precision and improve the service life of the saw blades 20 and 30. If the consumer can detect the sound generated by the operation of the chainsaw device 1 and find that the steel ball 40 is worn out in the early stage, the replacement of the entire blade 20, 30 can be avoided by replacing the new steel ball 40, thereby reducing the maintenance cost.
  • the aforementioned number of the steel balls 40 is set so as not to completely cover the annular grooves 21, 31. If the steel ball 40 completely covers the entire annular groove 21, 31, the rolling of the steel ball 40 is affected, and the saw blade 20, 30 is easily caught.
  • the arc angle of the range in which the steel balls 40 are not disposed in the annular grooves 21, 31 is less than 120°, so that the steel balls 40 can produce three-point support at an angle of 120° in any rolling distribution.
  • the steel ball 40 is introduced into the two saws
  • the portion of the annular grooves 21, 31 of the sheets 20, 30 is preferably less than half the size of the steel ball 40.
  • the distribution area of the steel balls 40 is large, the frictional force of each of the steel balls 40 is relatively lowered, so that the steel balls 40 are less likely to be worn, and the service life of the steel balls 40 can be increased.
  • the cutter head 23 of the first saw blade 20 protrudes from the inner side surface 22 of the first saw blade 20 by a size of 0.11 mm.
  • the cutter head 33 of the second saw blade 30 protrudes from the inner side surface 32 of the second saw blade 30 to have a size of 0.11 mm.
  • the distance between the cutter head 23 of the first saw blade 20 and the cutter head 33 of the second saw blade 30 is 0.03 mm. Therefore, the distance between the inner side surface 22 of the first saw blade 20 and the inner side surface 32 of the second cymbal sheet 30 is 0.25 mm.
  • the width of the portion of the steel ball 40 which is not introduced into the annular grooves 21, 31 of the two saw blades 20, 30 is 0.25 mm.
  • the steel balls 40 are magnetic and can be adsorbed on the saw blades 20, 30 to facilitate assembly of the steel balls 40.
  • the electric saw device with double saw blades forms a rolling support between the two saw blades 20 and 30 by means of the steel balls 40 disposed on the two saw blades 20 and 30. , can reduce the friction and improve the cutting precision and service life of the saw blades 20 and 30.
  • the service life of the steel ball 40 can be improved, and the number of times to replace the steel ball 40 can be reduced, and the use is more perfect.
  • the electric saw device with double saw blades forms a rolling support between the two saw blades 20 and 30 by means of the steel balls 40 disposed on the two cymbals 20, 30. , can reduce the friction and improve the cutting precision and service life of the saw blades 20 and 30.
  • the service life of the steel ball 40 can be improved, and the number of times to replace the steel ball 40 can be reduced, and the use is more perfect.

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

Abstract

L'invention concerne un dispositif de scie électrique double lame dans lequel la double lame (20, 30) installée sur ledit dispositif de scie électrique peut être entraînée en rotation en sens inverse. Un canal annulaire concave (21, 31) est ménagé à l'avant et à l'arrière des faces d'extrémité interne opposées des deux lames respectives, et le centre des canaux annulaires concaves (21, 31) est l'axe de rotation central de la lame correspondante. Une pluralité de bagues d'acier (40) sont disposées entre les deux lames (20, 30), et les deux extrémités de chaque bague d'acier (40) sont introduites dans le canal annulaire concave (21, 31) des deux lames respectives, l'espace entre la première lame (20) et la seconde lame (30) pouvant être défini. Lorsque les deux lames tournent en sens inverse, chaque bague d'acier (40) forme un support roulant permettant de conserver un bon espace de coupe entre les deux lames, ce qui permet d'éviter l'émoussement et la déformation des lames provoqués par une surchauffe.
PCT/CN2010/002046 2010-12-15 2010-12-15 Dispositif de scie électrique double lame WO2012079194A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/002046 WO2012079194A1 (fr) 2010-12-15 2010-12-15 Dispositif de scie électrique double lame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/002046 WO2012079194A1 (fr) 2010-12-15 2010-12-15 Dispositif de scie électrique double lame

Publications (1)

Publication Number Publication Date
WO2012079194A1 true WO2012079194A1 (fr) 2012-06-21

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Application Number Title Priority Date Filing Date
PCT/CN2010/002046 WO2012079194A1 (fr) 2010-12-15 2010-12-15 Dispositif de scie électrique double lame

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WO (1) WO2012079194A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11226905A (ja) * 1998-02-19 1999-08-24 Hitachi Koki Co Ltd 卓上切断機の角度インデックス装置
JP2000263501A (ja) * 1999-03-19 2000-09-26 Hitachi Koki Co Ltd 卓上切断機の傾斜角度インデックス装置
CN2772701Y (zh) * 2005-03-04 2006-04-19 扬州全世好机电工贸有限公司 一种正反转切割机双锯片装置
CN101116919A (zh) * 2007-05-08 2008-02-06 郭一文 一种成对锯片
CN101767224A (zh) * 2009-12-31 2010-07-07 铁鎯电动工具有限公司 双锯片装置及减少双锯片装置摩擦碰撞的方法
US20100180454A1 (en) * 2009-01-21 2010-07-22 Chung-Chi Cheng Electric saw device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11226905A (ja) * 1998-02-19 1999-08-24 Hitachi Koki Co Ltd 卓上切断機の角度インデックス装置
JP2000263501A (ja) * 1999-03-19 2000-09-26 Hitachi Koki Co Ltd 卓上切断機の傾斜角度インデックス装置
CN2772701Y (zh) * 2005-03-04 2006-04-19 扬州全世好机电工贸有限公司 一种正反转切割机双锯片装置
CN101116919A (zh) * 2007-05-08 2008-02-06 郭一文 一种成对锯片
US20100180454A1 (en) * 2009-01-21 2010-07-22 Chung-Chi Cheng Electric saw device
CN101767224A (zh) * 2009-12-31 2010-07-07 铁鎯电动工具有限公司 双锯片装置及减少双锯片装置摩擦碰撞的方法

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