WO2012019343A1 - Scie circulaire avec accessoire de commande - Google Patents

Scie circulaire avec accessoire de commande Download PDF

Info

Publication number
WO2012019343A1
WO2012019343A1 PCT/CN2010/075889 CN2010075889W WO2012019343A1 WO 2012019343 A1 WO2012019343 A1 WO 2012019343A1 CN 2010075889 W CN2010075889 W CN 2010075889W WO 2012019343 A1 WO2012019343 A1 WO 2012019343A1
Authority
WO
WIPO (PCT)
Prior art keywords
circular saw
cutting
saw
cpu
control accessory
Prior art date
Application number
PCT/CN2010/075889
Other languages
English (en)
Inventor
Jizhong Fu
Aigui Wang
Songtao Jin
Jiahao Fan
Sheng Lai
Ruilin Ke
Original Assignee
Bosch Power Tools (China) Co., Ltd.
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 Bosch Power Tools (China) Co., Ltd. filed Critical Bosch Power Tools (China) Co., Ltd.
Priority to CN201080068557.9A priority Critical patent/CN103068510B/zh
Priority to DE112010005801T priority patent/DE112010005801T5/de
Priority to PCT/CN2010/075889 priority patent/WO2012019343A1/fr
Publication of WO2012019343A1 publication Critical patent/WO2012019343A1/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
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/001—Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade
    • 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
    • B23D59/00—Accessories specially designed for sawing machines or sawing devices
    • B23D59/008—Accessories specially designed for sawing machines or sawing devices comprising computers

Definitions

  • the invention relates to a circular saw having an improved control accessory for pre-setting, measuring, displaying and controlling the cutting parameters of the circular saw.
  • Some circular saws are equipped with external accessories or fixtures for measuring the cutting length of each single cut.
  • this solution is not convenient in operation. Meanwhile, information obtained by such an external measuring accessory or fixture is not enough.
  • an object of the invention is to provide a circular saw with an improved control accessory.
  • the present invention provides a circular saw comprising:
  • a control accessory for pre-setting, measuring, displaying and controlling the cutting parameters of the circular saw.
  • control accessory comprises:
  • a CPU having a timer and an arithmometer; and a trigger, a distance sensor and a display, all connected with the CPU;
  • the trigger is configured to be activated by a user to start the cutting motion of the saw blade
  • the distance sensor is configured to measure the cutting length of the saw and send pulse signals to the CPU;
  • the display is configured to indicate the cutting parameters of the circular saw.
  • the trigger is a mechanical trigger or an electrical trigger.
  • the distance sensor is a contact sensor or a non-contact sensor.
  • the distance sensor is an optoelectronic distance sensor, an ultrasonic distance sensor, or a laser distance sensor.
  • control accessory further comprises a power supply control unit which is connected between the CPU and a power supply of the motor of the saw so as to switch off the power supply according to the command from the CPU.
  • control accessory further comprises a key board which is a man-machine interface for pre-setting operation parameters of the circular saw and loading former operation parameters stored in the CPU.
  • control accessory further comprises an alarm for indicating the end or a malfunction of the cutting operation of the saw.
  • the alarm is an audio and/or video alarm.
  • the cutting operation of the circular saw comprises the following steps:
  • Step SI in which the cutting parameters of the circular saw are input by means of the key board or loaded from the data stored in the CPU;
  • Step S2 in which the saw is switched on, and the trigger is actuated so that the saw blade starts to cut into a workpiece
  • Step S3 in which the distance sensor sends impulse signals to the CPU, and at the meantime, the timer and the arithmometer start to work;
  • Step S4 in which the CPU processes the impulse signals to determine current cutting length;
  • Step S5 in which related data are displayed by the display
  • Step S6 in which the CPU judges whether the current cutting length reaches the target cutting length; if the judge result of Step S6 is "No", then the operation goes back to Step S4; if the judge result of Step S6 is "Yes", then the operation goes forwards to Step S7;
  • Step S7 in which the alarm is activated to indicate the end of the cutting operation.
  • Step S8 in which the saw is switched off manually or switched off automatically by the power supply control unit under the command from the CPU.
  • the cutting parameters of the circular saw include at least one of:
  • control accessory further comprises an over-heat or over-current protect unit which is connected to the CPU for sensing the temperature of the motor or electrical current supplied to the motor; wherein the CPU disconnects the power supply to the motor when the temperature of the motor is higher than a threshold temperature or the electrical current becomes higher than a threshold current for a period of time.
  • control accessory further comprises means for sensing and controlling the tilt angle of the saw blade as a cutting parameter of the circular saw.
  • control accessory further comprises means for sensing and controlling the cutting depth of the saw blade cutting into the workpiece as a cutting parameter of the circular saw.
  • control accessory further comprises computer connection port.
  • the CPU disconnects the power supply to the motor when the cutting speed and/or the rotational speed of the saw blade become lower than corresponding predetermined values.
  • the circular saw is a table circular saw or a portable circular saw.
  • the circular saw is configured for cutting wood, plastic materials, metals, or composite materials.
  • the cutting status or parameters such as cutting distance and cutting speed
  • the end user can preset cutting parameters such as target cutting length and cutting speed.
  • an alarm is activated when it reaches the target cutting length or there is malfunction, and then the cutting operation can be stopped automatically.
  • Fig. 1 is a schematic block diagram of an control accessory for a circular saw according to an embodiment of the invention.
  • Fig. 2 is a flow chart of the operation of the control accessory.
  • the circular saw of the invention comprises a control accessory for setting, measuring, displaying and controlling various cutting parameters of the circular saw, such as current and total cutting lengths, cutting speed, and the like.
  • control accessory comprises:
  • a trigger 2 a distance sensor 3
  • a display 4 a power supply control unit 5
  • a key board 6 an alarm 7, and the like, which are all connected with the CPU 1.
  • the CPU 1 is a single chip element for receiving information from / sending commands to other components.
  • the CPU 1 has a calculagraph or timer and an arithmometer.
  • the trigger 2 may be a mechanical trigger or an electrical trigger and is activated by a user to start the cutting movement of the saw blade and at the same time activate the distance sensor 1.
  • the distance sensor 3 may be a contact sensor or a non-contact sensor for measuring the cutting length of the saw and sends pulse signal to the CPU 1.
  • the distance sensor may use any type of sensors known in the art, for example, an optoelectronic distance sensor, an ultrasonic distance sensor, a laser distance sensor, or the like.
  • the display 4 may display input and output data and operation parameters of the saw.
  • the power supply control unit 5 is connected between the CPU 1 and the power supply of the motor of the saw so as to switch off the power supply according to the command from the CPU 1.
  • the key board 6 is a man-machine interface for the user to input pre- setting operation parameters and load former operation parameters stored in the CPU 1.
  • the alarm 7 may be an audio and/or video alarm which indicates the end or malfunction of the cutting operation of the saw.
  • the audio alarm may output beep sound or a human voice indicating the current condition of the operation.
  • the video alarm may be a coloured flash, indicating symbols or words, or the like.
  • Step SI a user presets cutting parameters of the circular saw, such as target cutting length, cutting speed, and the like. If the next cutting is the same as the former one, former cutting parameters are loaded automatically by the CPU 1 and no new cutting parameters are input.
  • Step S2 the saw is switched on, and the trigger is actuated by the user, so that the saw blade begins to cut into a workpiece.
  • Step S3 the distance sensor sends impulse signals to the CPU 1.
  • the calculagraph and the arithmometer start to work.
  • Step S4 the CPU 1 processes the impulse signals to determine current cutting length.
  • Step S5 related data are displayed on the screen of the display 4.
  • the related data may include:
  • Step S6 the CPU 1 judges whether the current cutting length reaches the target cutting length. If the judge result of Step S6 is "No", then the operation goes back to Step S4. If the judge result of Step S6 is "Yes”, then the operation goes forwards to Step S7.
  • Step S7 the alarm 7 is activated to output an audio and/or video alarm which indicates the end of the cutting operation.
  • Step S8 the saw is switched off manually by the user or automatically by the power supply control unit 5 under the command from the CPU 1.
  • the control accessory is powered by a low voltage DC supply which is dependent or independent of the power supply of the saw.
  • the trigger will be released by the user, and the data of current single cutting length and cutting speed will be set to zero. But the total cutting distance will be accumulative. When the total cutting distance reaches a certain value, the saw blade should be exchanged.
  • an over-heat or over-current protect unit can be connected to the CPU 1.
  • the protect unit senses the temperature of the motor or electrical current supplied to the motor and disconnects the power supply to the motor when the temperature of the motor is higher than a threshold temperature or the electrical current becomes higher than a threshold current for a period of time (for example, 5 or 10 seconds).
  • a threshold temperature or the electrical current becomes higher than a threshold current for a period of time (for example, 5 or 10 seconds).
  • means for sensing and controlling the tilt angle of the saw blade may be connected to the CPU 1.
  • the tilt angle can be displayed by the display 4 and can be adjusted under the command of the CPU 1.
  • means for sensing and controlling the cutting depth of the saw blade cutting into the workpiece may be connected to the CPU 1.
  • the cutting depth can be displayed by the display 4 and can be adjusted under the command of the CPU 1.
  • control accessory further comprises a computer connection port for connecting with an external computer to input or renew the program of the CPU 1. It can be understood that other components can also be added into the control accessory.
  • the cutting speed or the rotational speed of the saw blade can be used as a protective index.
  • the cutting speed and/or the rotational speed of the saw blade may become too low even zero. Then the CPU 1 may disconnect the power supply of the motor by means of the power supply control unit 5 and activate the alarm 7 to indicate this condition.
  • the invention discloses a new method for achieving exact cutting by a circular saw.
  • the circular saw equipped with the above described control accessory can let the end user know more about the cutting process and the status of the saw.
  • the end users can perform a cutting with the target distance exactly preset themselves. With the shown cutting speed and total cutting distance, the end user can know more about their saws so that to take good care of their saws and get a longer life endurance.
  • the control accessory can be incorporated into any type of circular saws, such as table circular saws and portable circular saws, and can be used to cut any material, such as wood, plastic materials, metals, composite materials, or the like.

Landscapes

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

Abstract

Scie circulaire comprenant une lame de scie, un moteur électrique pour entraîner la lame de scie et un accessoire de commande pour prérégler, mesurer, afficher et contrôler les paramètres de la scie circulaire.
PCT/CN2010/075889 2010-08-11 2010-08-11 Scie circulaire avec accessoire de commande WO2012019343A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201080068557.9A CN103068510B (zh) 2010-08-11 2010-08-11 具有控制配件的圆锯
DE112010005801T DE112010005801T5 (de) 2010-08-11 2010-08-11 Kreissäge mit Regelzubehör
PCT/CN2010/075889 WO2012019343A1 (fr) 2010-08-11 2010-08-11 Scie circulaire avec accessoire de commande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/075889 WO2012019343A1 (fr) 2010-08-11 2010-08-11 Scie circulaire avec accessoire de commande

Publications (1)

Publication Number Publication Date
WO2012019343A1 true WO2012019343A1 (fr) 2012-02-16

Family

ID=45567271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/075889 WO2012019343A1 (fr) 2010-08-11 2010-08-11 Scie circulaire avec accessoire de commande

Country Status (3)

Country Link
CN (1) CN103068510B (fr)
DE (1) DE112010005801T5 (fr)
WO (1) WO2012019343A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015211692A1 (de) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Ablängsystem, Bearbeitungseinrichtung, Entfernungsmessgerät
CN106444433B (zh) * 2015-08-07 2019-08-20 苏州宝时得电动工具有限公司 动力工具及用于动力工具的控制方法
CN106002575A (zh) * 2016-07-16 2016-10-12 方小玲 一种高精度的切割机
CN106353006B (zh) * 2016-08-31 2019-02-19 哈尔滨理工大学 一种镶嵌式锯片监测器
CN108934522B (zh) * 2018-05-08 2020-09-01 华南农业大学 半自动化蕉芽切割机、蕉芽根系破坏机及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1105614A (zh) * 1993-09-30 1995-07-26 布莱克和德克尔公司 有关动力工具的改进
CN1683103A (zh) * 2004-04-13 2005-10-19 罗伯特·博世有限公司 具有测量－显示系统的台式锯
DE102006005410A1 (de) * 2006-02-03 2007-08-09 Circle Gmbh Engineering Solutions Materialbearbeitungswerkzeug mit einem motorischen Antrieb, wie bspw. eine Bohrmaschine, eine Kreissäge, eine Stichsäge, eine Oberfräse o. dgl. sowie Hilfseinrichtung für ein solches Materialbearbeitungswerkzeug

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2448479C (fr) * 2002-11-12 2009-05-05 Makita Corporation Outils mecaniques
WO2006066259A2 (fr) * 2004-12-17 2006-06-22 Milwaukee Electric Tool Corporation Accessoires intelligents pour outils a commande mecanique
US7849774B2 (en) * 2005-04-15 2010-12-14 Roberts Bosch Gmbh Power miter saw having digital displays
US20090019717A1 (en) * 2007-07-18 2009-01-22 Bernhard Nortmann Digital Measurement System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1105614A (zh) * 1993-09-30 1995-07-26 布莱克和德克尔公司 有关动力工具的改进
CN1683103A (zh) * 2004-04-13 2005-10-19 罗伯特·博世有限公司 具有测量－显示系统的台式锯
DE102006005410A1 (de) * 2006-02-03 2007-08-09 Circle Gmbh Engineering Solutions Materialbearbeitungswerkzeug mit einem motorischen Antrieb, wie bspw. eine Bohrmaschine, eine Kreissäge, eine Stichsäge, eine Oberfräse o. dgl. sowie Hilfseinrichtung für ein solches Materialbearbeitungswerkzeug

Also Published As

Publication number Publication date
CN103068510A (zh) 2013-04-24
CN103068510B (zh) 2016-02-10
DE112010005801T5 (de) 2013-06-13

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