WO2015066951A1 - 斜切锯 - Google Patents

斜切锯 Download PDF

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Publication number
WO2015066951A1
WO2015066951A1 PCT/CN2013/089644 CN2013089644W WO2015066951A1 WO 2015066951 A1 WO2015066951 A1 WO 2015066951A1 CN 2013089644 W CN2013089644 W CN 2013089644W WO 2015066951 A1 WO2015066951 A1 WO 2015066951A1
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WO
WIPO (PCT)
Prior art keywords
locking
cam
base
handle
miter saw
Prior art date
Application number
PCT/CN2013/089644
Other languages
English (en)
French (fr)
Inventor
吴明厅
Original Assignee
上海锐奇工具股份有限公司
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 上海锐奇工具股份有限公司 filed Critical 上海锐奇工具股份有限公司
Priority to US14/410,002 priority Critical patent/US9533362B2/en
Priority to AU2013404787A priority patent/AU2013404787B2/en
Priority to CH00446/16A priority patent/CH710398B1/de
Publication of WO2015066951A1 publication Critical patent/WO2015066951A1/zh
Priority to US15/397,447 priority patent/US10493542B2/en

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
    • B23D45/04—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever
    • B23D45/042—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever
    • B23D45/046—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever the pivoted lever being mounted on a carriage
    • B23D45/048—Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock carried by a pivoted lever with the saw blade carried by a pivoted lever the pivoted lever being mounted on a carriage the saw blade being adjustable according to angle of cut
    • 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
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/02—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of frames; of guiding arrangements for work-table or saw-carrier
    • B23D47/025—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of frames; of guiding arrangements for work-table or saw-carrier of tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • 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
    • Y10T83/00—Cutting
    • 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
    • Y10T83/7697—Tool angularly adjustable relative to work-support
    • 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
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7684—With means to support work relative to tool[s]
    • Y10T83/7701—Supporting surface and tool axis angularly related
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8773—Bevel or miter cut

Definitions

  • the present invention relates to a miter saw, and in particular to a miter saw capable of quickly locking and locking the rotation angle of the table. Background technique
  • a miter saw is a commonly used electric tool that is used primarily to achieve an oblique cut at an angle to the object being cut.
  • a general miter saw includes a base, a table, a grid disposed on the table in relation to the position of the base, and a cutting power head assembly including a cutting blade disposed along the table and disposed above the table, wherein The table and the base can pivot in a vertical direction as a rotating shaft. When the beveling is performed, the table and the base rotate relative to each other, and the angle between the cutting blade and the portion of the grating against which the body to be cut rests is adjusted to be required. The angle corresponding to the bevel is cut to achieve the bevel cut.
  • the table and the base of the miter saw usually need to go through the following three states: First, the table and the base are completely relaxed, and the relative rotation is freely adjusted to adjust the angle; the second is the workbench. And the base realizes some positioning locking at a specified angle; again, the table and the base are locked at a specified angle positioning lock.
  • the existing miter saw often employs a complicated locking and locking mechanism, and is not easy to operate, and usually requires two hands to operate in multiple steps.
  • miter saw that is reasonably structured, practical, and capable of one-handed operation to achieve a rotational positioning lock of the base and the table. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a miter saw with reasonable structure, strong practicability, and capable of single-hand operation to realize positioning and locking of the base and the table.
  • the present invention provides a miter saw, comprising: a base, underneath The surface is provided with a plurality of grooves; the table is rotatable relative to the base; the rotary positioning mechanism includes a body fixedly coupled to the table and movable along the table, and a boss disposed on the body Engaging one of a plurality of recesses in the base to position the table in a desired rotational position relative to the base; and a locking mechanism operatively coupled to the table for The table is locked in the desired rotational position.
  • the miter saw further includes a bracket, and the rotational positioning mechanism and the locking mechanism are fixedly coupled to the table by the bracket.
  • the body of the rotary positioning mechanism is a brake reed, and one end of the brake spring is fixedly coupled to the bracket.
  • the rotational positioning mechanism further includes a reed drive structure adjacent to the brake reed for driving the brake reed in a plurality of grooves for engaging the boss into the base A first position of one of the ones and a second position that causes the boss to disengage the recess.
  • the reed drive structure includes a locking cam facing the brake reed and a driving of the locking cam to press the brake reed to move between the first position and the second position .
  • the cam handle includes a handle shaft
  • the lock cam has a shaft hole
  • the handle shaft is rotatably coupled to the bracket through the shaft hole, and the radial cross section of the cam handle
  • the shape of the shaft holes is non-circular.
  • the locking cam is located between the bracket and the cam handle in an axial direction of the handle shaft, and a shaft circlip is further disposed between the bracket and the locking cam, the locking cam A wavy circlip is also provided between the cam handle and the cam handle.
  • the locking mechanism includes a locking pin that contacts a peripheral surface of the base through a pin hole provided in the bracket, and passes through one end of the locking pin The friction generated by the contact between the end face and the outer peripheral surface of the base achieves locking of the table.
  • the locking mechanism further includes a locking handle and a friction plate, the locking hand A locking cam is fixedly disposed on the handle, and an end surface of the other end of the locking pin is in contact with the friction plate, and the locking cam presses the friction plate with the rotation of the locking handle, thereby pushing the locking The pin contacts the outer peripheral surface of the base.
  • the locking handle is rotatably coupled to the bracket by a handle rotation pin.
  • the locking drive structure further includes a spring disposed between the locking pin and the friction plate along an axial direction of the locking pin, and one end of the spring is fixedly coupled to the locking pin, The other end is connected to the friction plate by an open retaining ring.
  • the pin holes and the axial direction of the locking pin are both disposed in the radial direction of the outer peripheral surface of the base.
  • the invention realizes the positioning of the rotational position between the base and the worktable by using a rotary positioning mechanism, and also realizes the locking between the base and the worktable by a locking mechanism, and the rotary positioning mechanism and the locking mechanism are both
  • the fixed connection with the worktable makes the whole device structure more reasonable and practical, and can be positioned and locked by one-hand operation only.
  • the present invention utilizes the worktable and the rotary positioning mechanism to respectively connect with the base from the upper and lower sides of the base, so that the worktable and the rotary positioning mechanism have the effect of clamping and locking the base, and Compared with the positioning mechanism in the technology, the locking effect is better.
  • FIG. 1 is a schematic structural view of a miter saw according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a rotary positioning mechanism according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a locking mechanism according to an embodiment of the present invention.
  • FIG. 1 to FIG. 3 is an optional embodiment of the present invention, and can be considered by those skilled in the art to be within the scope of the spirit and scope of the present invention. Modify and polish it.
  • the embodiment provides a miter saw, which comprises at least a coaxial rotating connection base 2 and a work table 1 .
  • the “coaxial rotary connection” refers to the central axis of the base 2 and the worktable 1 .
  • the central axes are on the same line, indicated by the axis L in Fig. 1, wherein the table 1 is rotatable about the axis L and the base 2 is fixed, that is, the table 1 is rotatable relative to the base 2 about the axis L.
  • the base 2 and the table 1 are matched in shape.
  • the table 1 is substantially circular, and the base 2 is substantially annular.
  • the miter saw further includes a rotary positioning mechanism and a locking mechanism, wherein the rotary positioning mechanism and the locking mechanism are coupled to the table 1 via a bracket 11, and a relative rotational position between the base 2 and the table 1
  • the locking is achieved by the rotation positioning mechanism, and when the rotational position is locked, the locking between the base 2 and the table 1 is achieved by the locking mechanism.
  • the work table 1 and the rotary positioning mechanism are respectively connected to the base 2 from the upper and lower sides of the base 2, and specifically, the table 1 is placed on the base 2 from the upper side of the base 2
  • the boss 21 in the rotary positioning mechanism is placed from the underside of the base 2 to the recess 20 of the base 2 (described in detail below).
  • the rotary positioning mechanism includes at least one brake spring 3 , and one end of the brake spring 3 is fixedly connected to the bracket 11 , and the brake spring 3 is disposed on the brake spring 3 .
  • a plurality of grooves 20 are formed at the lower edge of the base 2, and the plurality of 1HJ grooves 20 have the same shape and are arranged in a uniform or non-uniform manner.
  • the number and arrangement of the 1HJ slots 20 can be adjusted as needed.
  • the bracket 11, the table 1 and the brake reed 3 are connected by a screw 6, a washer ⁇ and a spring washer 8, which is an M6 screw, and the art piece 7 is ⁇ .
  • spring washer 8 is ⁇ 6 spring washer.
  • the front end of the bracket 11 is provided with an adjustment M6 screw 27 for adjusting the front and rear mounting distance of the bracket 11, ensuring that sufficient clearance is provided for the two cams 16, 26 described below to be rotated for locking and locking.
  • the rotation positioning mechanism further includes a reed driving structure, the brake reed 3 is connected to the reed driving structure, and the braking reed 3 realizes its own bending through the reed driving structure, and further passes through the The bending of the brake reed 3 causes the boss 21 to disengage the recess 20, and the reed drive structure is rotatably coupled to the bracket 11.
  • the reed driving structure includes a locking cam 16 and a cam handle 18, and the cam handle 18 is fixedly provided with a handle rotating shaft 19, and the handle rotating shaft 19 sequentially passes through the locking cam 16
  • the inner diameter of the shaft hole 22 is larger than the outer diameter of the handle shaft 19 so that the handle shaft 19 can rotate in the shaft hole 22.
  • the shape of the radial cross section of the handle shaft 19 is a pattern composed of a superior arc and a chord, which matches the shape of the shaft hole 23 on the locking cam 16, thereby realizing
  • the cam handle 19 rotates coaxially with the lock cam 16 in synchronization.
  • the shape of the handle shaft 19 and the shaft hole 23 may be other, for example, splined, thereby achieving synchronous rotation, and is not limited to the enumeration of the embodiment.
  • the locking cam 16 is located between the bracket 11 and the cam handle 18 in the axial direction of the handle shaft 19, and a shaft circlip 15 is further disposed between the bracket 11 and the locking cam 16 for locking.
  • a wave circlip 17 is also provided between the cam 16 and the cam handle 18.
  • the circlip for the shaft 15 is a circlip for the ⁇ 8 shaft.
  • the handle shaft 19 is rotatably coupled to the bracket 11 such that the handle shaft 19 and the cam handle 18 are rotatable about the handle shaft 19
  • the axial rotation of the cam handle 18 and the locking cam 16 are coaxially synchronized, the locking cam 16 is in contact with the brake reed 3, and the system is pressed by the rotation of the locking cam 16
  • the spring reed 3 is moved to realize the bending of the brake reed 3, and in this embodiment, the cam 16 is located on the upper side of the brake reed 3, so that the brake reed 3 can be pressed downward, which occurs. bending.
  • the cam handle 18 When the rotation angle of the table 1 relative to the base 2 is adjusted, the cam handle 18 is rotated to drive the locking cam 16 to rotate around the center of the hole 23. Since the locking cam 16 is in contact with the brake reed 3, the rotation of the locking cam 16 will be depressed. The reed 3 disengages the boss 21 on the brake reed 3 and the recess 20 on the base 2 so that the table 1 can freely rotate about the base 2.
  • the locking mechanism includes a locking pin 12, and the locking pin 12 is in contact with the outer circular surface 30 of the base 2 through a pin hole 25 provided in the bracket 11, and The friction between the front end face of the locking pin 12 and the outer circular face 30 of the base 2 achieves a locking between the base 2 and the table 1.
  • the locking mechanism further includes a locking driving structure, the locking driving structure includes a locking handle 4 and a friction plate 10, a rear end surface of the locking pin 12 is in contact with the friction plate 10, and the friction is The bending of the sheet 10 pushes the locking pin 12 into contact with the outer circular surface 30 of the base 2, thereby achieving locking, and the friction plate 10 is bent by the rotation of the locking handle 4.
  • the locking driving structure includes a locking handle 4 and a friction plate 10
  • a rear end surface of the locking pin 12 is in contact with the friction plate 10
  • the friction is The bending of the sheet 10 pushes the locking pin 12 into contact with the outer circular surface 30 of the base 2, thereby achieving locking, and the friction plate 10 is bent by the rotation of the locking handle 4.
  • a locking cam 26 is fixedly mounted on the locking handle 4, and the locking cam 26 presses the friction plate 10 with the rotation of the locking handle 4, thereby achieving bending of the friction plate 10.
  • the support 11 is provided with a cam groove 24, the friction plate 10 is located in the cam groove 24, and the locking cam 26 is also rotated in the cam groove 24, thereby realizing the pair of friction plates. 10 presses.
  • One end of the friction piece 10 is fixed to the bracket 11 by a screw 9, which is an M4 screw.
  • the shape of the locking cam 26 can be referred to the locking cam 16, which adds a convex portion to the conventional wheel type, so that the friction plate 10 and the brake spring can be pressed by their rotation.
  • the locking handle 4 is rotationally coupled to the bracket 11 by a handle rotation pin 5.
  • the locking drive structure further includes a spring 13 having a telescopic force direction disposed along an axial direction of the locking pin 12, the spring 13 being located outside the locking pin 12, and the spring 13 One end is fixedly connected to the locking pin 12, and the other end is connected to the friction plate 10 through an opening retaining ring 14.
  • the locking handle 4 when locking, the locking handle 4 is rotated downward, and the locking cam 26 pushes the friction plate 10 to drive the locking pin 12 to move forward.
  • the front end of the locking pin 12 bears against the outer circular surface 30 of the base 2.
  • the table 1 and the base 2 are locked by the frictional force between the front end surface of the locking pin 12 and the outer circular surface 30.
  • the spring 13 on the locking pin 12 has a resetting action, and when the locking handle 4 is released, the spring 13 causes the locking pin 12 to be retracted.
  • the pin holes 25 and the axial direction of the locking pin 12 are all disposed along the radial direction of the outer circular surface 30 of the base 2, so that the direction of the static friction generated by the locking is along.
  • the tangential direction of the outer circular surface 30 is disposed along the radial direction of the outer circular surface 30 of the base 2, so that the direction of the static friction generated by the locking is along.
  • the present invention utilizes a rotational positioning mechanism to achieve locking of the rotational position between the base and the table, and also achieves locking between the base and the table by a locking mechanism, and the rotary positioning mechanism Both the locking mechanism and the locking mechanism are disposed on a bracket fixedly connected to the table, so that the entire device structure is more reasonable and practical, and the locking and locking can be realized by only one-hand operation.
  • the present invention utilizes the worktable and the rotary positioning mechanism to respectively connect with the base from the upper and lower sides of the base, so that the worktable and the rotary positioning mechanism have the effect of clamping and locking the base, and Compared with the positioning mechanism in the technology, the locking effect is better.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Machine Tool Units (AREA)
  • Machine Tool Positioning Apparatuses (AREA)

Abstract

一种斜切锯，包括下表面开设有多个凹槽（20）的底座（2），可相对于底座（2）旋转的工作台（1），一旋转定位机构和一锁紧机构。旋转定位机构包括一主体与工作台（1）固定连接且可跟随工作台（1）运动，以及一凸台（21）设于主体上，用于卡入底座（2）的多个凹槽（20）中的一个，使工作台（1）定位在相对于底座（2）的一期望旋转位置上；锁紧机构可操作地连接于工作台（1），用于将工作台（1）锁紧在该期望旋转位置上。该斜切锯的结构合理、实用性强，而且仅仅通过单手操作就能实现工作台相对于底座的定位和锁紧。

Description

斜切锯 技术领域
本发明涉及一种斜切锯， 尤其设计一种能实现工作台旋转角度快速锁定 和锁紧的斜切锯。 背景技术
斜切锯是一种常用的电动的工具， 其主要用来实现对待切割物体进行一 定角度的斜向切割。 一般的斜切锯包括底座、 工作台、 设置在工作台上与底 座位置关系确定的靠栅以及设置在工作台上方的随着工作台一起转动的包括 切割刀片在内的切割动力头组件， 其中工作台和底座能够以竖直方向作为转 轴进行枢转， 在实现斜切时， 工作台和底座相对转动， 切割刀片与靠栅供待 切割体倚靠的部分之间的夹角被调整成需要进行斜切所对应的角度， 从而实 现斜切。 在实际的斜切加工中， 斜切锯的工作台和底座通常需要经过以下三 种状态： 首先是工作台和底座之间完全放松， 实现彼此自由的相对转动， 以 便调节角度； 其次是工作台和底座实现一些指定角度的定位锁定； 再次是工 作台和底座在指定角度定位锁定处进行锁紧。
现有的斜切锯为了能够实现上述不同的状态， 往往采用复杂的锁定和锁 紧机构， 并且操作起来十分不容易， 通常需要双手分多步进行操作。 现在尚 没有一种结构合理、 实用性强、 能够单手操作实现底座和工作台旋转定位锁 紧的斜切锯。 发明内容
本发明要解决的技术问题是提供一种结构合理、 实用性强、 能够单手操 作实现底座和工作台旋转定位及锁紧的斜切锯。
为了解决这一技术问题， 本发明提供了一种斜切锯， 包括： 底座， 其下 表面开设有多个凹槽； 工作台， 可相对于底座旋转； 旋转定位机构， 包括一 主体与所述工作台固定连接且可跟随工作台运动， 以及一凸台设于所述主体 上， 用于卡入所述底座的多个凹槽中的一个， 使工作台定位在相对于底座的 一期望旋转位置上； 以及锁紧机构， 可操作地连接于所述工作台， 用于将所 述工作台锁紧在所述期望旋转位置上。
在一个实施例中， 所述斜切锯还包括一支架， 所述旋转定位机构和锁紧 机构通过所述支架与所述工作台固定连接。
在一个实施例中， 所述旋转定位机构的主体是一制动簧片， 所述制动簧 片的一端与所述支架固定连接。
在一个实施例中， 所述旋转定位机构还包括邻近制动簧片的一簧片驱动 结构， 用于驱动所述制动簧片在使所述凸台卡入所述底座的多个凹槽中的一 个的一第一位置和使得所述凸台脱开所述凹槽的一第二位置之间运动。
在一个实施例中， 所述簧片驱动结构包括面向制动簧片的锁定凸轮和一 驱动所述锁定凸轮旋转以按压所述制动簧片在所述第一位置和第二位置之间 运动。
在一个实施例中， 所述凸轮手柄包括一手柄转轴， 所述锁定凸轮上开有 一轴孔， 所述手柄转轴穿过所述轴孔与支架旋转连接， 所述凸轮手柄的径向 截面和所述轴孔的形状都为非圓形。
在一个实施例中， 沿所述手柄转轴的轴向， 所述锁定凸轮位于所述支架 和凸轮手柄之间， 所述支架与锁定凸轮之间还设有轴用弹性挡圈， 所述锁定 凸轮与凸轮手柄之间还设有波形弹性挡圈。
在一个实施例中， 所述锁紧机构包括锁紧销， 所述锁紧销穿过设于所述 支架上的销孔与所述底座的外周面接触， 且通过所述锁紧销的一端端面与所 述底座的外周面之间接触产生的摩擦力实现所述工作台的锁紧。
在一个实施例中， 所述锁紧机构还包括锁紧手柄和摩擦片， 所述锁紧手 柄上固定设有锁紧凸轮， 所述锁紧销的另一端端面与所述摩擦片接触， 所述 锁紧凸轮随所述锁紧手柄的旋转按压所述摩擦片， 从而推动所述锁紧销接触 所述底座的外周面。
在一个实施例中， 所述锁紧手柄通过手柄转动销与所述支架转动连接。 在一个实施例中， 所述锁紧驱动结构还包括沿所述锁紧销的轴向设置在 锁紧销和摩擦片之间的弹簧， 所述弹簧的一端与所述锁紧销固定连接， 另一 端通过一个开口挡圈与所述摩擦片连接。
在一个实施例中， 所述销孔和所述锁紧销的轴向均沿所述底座的外周面 的径向设置。
本发明利用一个旋转定位机构实现了底座和工作台之间旋转位置的定 位， 还通过一个锁紧机构实现所述底座和工作台之间的锁紧， 而所述旋转定 位机构和锁紧机构均与所述工作台固定连接， 使得整个装置结构更合理、 实 用性更强， 而且仅仅通过单手操作就能实现定位和锁紧。 此外， 本发明利用 所述工作台和旋转定位机构分别自所述底座的上、 下两侧与所述底座连接， 从而使得工作台与旋转定位机构对底座起到了夹持锁定的效果， 与现有技术 中的定位机构相比， 其锁定的效果更佳。 附图说明
图 1是本发明一实施例提供的斜切锯的结构示意图；
图 2是本发明一实施例中旋转定位机构的结构示意图；
图 3是本发明一实施例中锁紧机构的结构示意图；
图中， 1-工作台； 2-底座； 3-制动簧片； 4-锁紧手柄； 5-手柄转动销； 6- 螺钉； 7-垫片； 8-弹簧垫片； 9-螺钉； 10-摩擦片； 11-支架； 12-锁紧销； 13- 弹簧； 14-开口挡圈； 15-轴用弹性挡圈； 16-锁定凸轮； 17-波形弹性挡圈； 18- 凸轮手柄； 19-手柄转轴； 20-凹槽； 21-凸台； 22、 23-轴孔； 24-凸轮槽； 25- 销孔； 26-锁紧凸轮; 27-螺钉； 30-外圓面； L-轴线。 具体实施方式
以下将结合图 1至图 3对本发明提供的斜切锯进行详细的描述， 其为本 发明一可选的实施例， 可以认为本领域的技术人员在不改变本发明精神和内 容的范围内能够对其进行修改和润色。
请参考图 1 , 本实施例提供了一种斜切锯， 至少包括同轴旋转连接的底座 2和工作台 1 , 此处 "同轴旋转连接" 是指底座 2的中心轴和工作台 1的中心 轴位于同一直线上， 图 1中以轴线 L表示， 其中， 工作台 1可绕轴线 L旋转， 而底座 2是固定的， 也就是说， 工作台 1可以相对底座 2绕轴线 L旋转。 底 座 2和工作台 1的形状相匹配， 在本实施例中， 工作台 1大致为圓形， 底座 2 大致为圓环形。 所述斜切锯还包括旋转定位机构和锁紧机构， 所述旋转定位 机构和锁紧机构通过一个支架 11与所述工作台 1连接， 所述底座 2和工作台 1之间的相对旋转位置通过所述旋转定位机构实现锁定， 当旋转位置锁定后， 所述底座 2和工作台 1之间通过所述锁紧机构实现锁紧。 所述工作台 1和所 述旋转定位机构分别自所述底座 2的上、 下两侧与所述底座 2连接， 具体来 说， 工作台 1 自所述底座 2的上侧放置到底座 2上， 所述旋转定位机构中的 凸台 21 自所述底座 2的下侧放置到底座 2的凹槽 20上（于下文详述）。
请参考图 2, 并结合图 1 , 所述旋转定位机构至少包括一制动簧片 3 , 所 述制动簧片 3的一端与所述支架 11固定连接， 所述制动簧片 3上设有与预先 开设于底座 2下缘的凹槽 20的形状匹配的凸台 21 ,所述底座 2和工作台 1之 间的旋转位置通过将所述凸台 21 自所述凹槽 20的下侧卡入所述凹槽 20中实 现锁定， 并通过将所述凸台 21脱开所述凹槽 20实现锁定的解除。 为了实现 底座 2相对于工作台 1定位在不同的旋转位置， 在底座 2下缘开设有多个凹 槽 20, 所述多个 1HJ槽 20的形状相同， 以均匀或非均匀方式排列。 1HJ槽 20的 数目及排列方式可根据需要进行调整， 通过将制动簧片 3上的凸台 21卡入相 应的凹槽 20中， 可使在底座 2相对于工作台 1定位在所需的旋转位置。 在本实施例中， 所述支架 11、 工作台 1和制动簧片 3之间通过螺钉 6、 垫片 Ί以及弹簧垫片 8连接在一起，该螺钉 6为 M6螺钉，藝片 7为 φ 6藝片， 弹簧垫片 8为 Φ 6弹簧垫片。 支架 11前端装有调节用 M6螺钉 27 , 用于调节 支架 11的前后安装距离， 保证提供足够的间隙供下文所述的两个凸轮 16、 26 能够旋转从而实现锁定和锁紧。
所述旋转定位机构还包括簧片驱动结构， 所述制动簧片 3 与所述簧片驱 动结构连接， 所述制动簧片 3通过所述簧片驱动结构实现自身的弯曲， 进而 通过所述制动簧片 3的弯曲使得所述凸台 21脱开所述凹槽 20,所述簧片驱动 结构与所述支架 11旋转连接。
具体的，如图 2所示，所述簧片驱动结构包括锁定凸轮 16和凸轮手柄 18 , 所述凸轮手柄 18上固定设有手柄转轴 19, 所述手柄转轴 19依次穿过所述锁 定凸轮 16上的轴孔 23和支架 11上的轴孔 22 , 其中， 手柄转轴 19和轴孔 23 的截面形状相同， 且为非圓形， 使得手柄转轴 19和锁定凸轮 16保持同步旋 转， 支架 11上的轴孔 22的内径大于手柄转轴 19的外径， 使得手柄转轴 19 能在轴孔 22中旋转。
请参考图 2, 在本实施例中， 所述手柄转轴 19的径向截面的形状为优弧 和弦组成的图形， 其与所述锁定凸轮 16上的轴孔 23的形状相匹配， 从而实 现所述凸轮手柄 19与所述锁定凸轮 16的同轴同步旋转。 手柄转轴 19与轴孔 23 的形状亦可为其他， 例如可以通过花键连接， 从而实现同步旋转， 而不限 于本实施例的列举。
沿所述手柄转轴 19的轴向， 所述锁定凸轮 16位于所述支架 11和凸轮手 柄 18之间， 所述支架 11与锁定凸轮 16之间还设有轴用弹性挡圈 15 , 所述锁 定凸轮 16与凸轮手柄 18之间还设有波形弹性挡圈 17。 其中轴用弹性挡圈 15 为 Φ 8轴用弹性挡圈。
簧片驱动结构与支架 11、 制动簧片 3安装完毕后， 所述手柄转轴 19与所 述支架 11转动连接，使得所述手柄转轴 19以及凸轮手柄 18可绕手柄转轴 19 的轴向旋转， 所述凸轮手柄 18与所述锁定凸轮 16实现同轴同步旋转， 所述 锁定凸轮 16与所述制动簧片 3接触， 且通过所述锁定凸轮 16的旋转按压所 述制动簧片 3 , 从而实现所述制动簧片 3的弯曲， 本实施例中， 凸轮 16位于 所述制动簧片 3的上侧， 从而能够将该制动簧片 3向下按压， 发生弯曲。
在调整工作台 1相对底座 2的旋转角度时， 旋转凸轮手柄 18, 带动锁定 凸轮 16绕孔 23中心旋转， 由于锁定凸轮 16与制动簧片 3相接触， 锁定凸轮 16的转动将下压制动簧片 3 ,使制动簧片 3上的凸台 21和底座 2上的凹槽 20 脱开， 从而工作台 1可绕底座 2自由转动。
请参考图 3 , 所述锁紧机构包括锁紧销 12, 所述锁紧销 12穿过设于所述 支架 11上的销孔 25与所述底座 2的外圓面 30接触， 且通过所述锁紧销 12 的前端面与所述底座 2的外圓面 30之间接触产生的摩擦力实现所述底座 2和 工作台 1之间的锁紧。
所述锁紧机构还包括锁紧驱动结构， 所述锁紧驱动结构包括锁紧手柄 4 和摩擦片 10, 所述锁紧销 12的后端面与所述摩擦片 10接触， 且通过所述摩 擦片 10的弯曲推动所述锁紧销 12接触所述底座 2的外圓面 30, 进而实现锁 紧， 所述摩擦片 10通过所述锁紧手柄 4的转动实现弯曲。
所述锁紧手柄 4上固定设有锁紧凸轮 26,所述锁紧凸轮 26随所述锁紧手 柄 4的旋转按压所述摩擦片 10, 进而实现所述摩擦片 10的弯曲。在本实施例 中， 所述支座 11上设有凸轮槽 24, 所述摩擦片 10位于该凸轮槽 24内， 所述 锁紧凸轮 26也在该凸轮槽 24内旋转， 从而实现对摩擦片 10的按压。 所述摩 擦片 10的一端通过螺钉 9固定于支架 11上，该螺钉 9为 M4螺钉。所述锁紧 凸轮 26的形状可以参照锁定凸轮 16,其相较于传统的轮型增添了凸起的部分， 使得通过他们旋转能够按压摩擦片 10和制动簧片 3
所述锁紧手柄 4通过手柄转动销 5与所述支架 11实现转动连接。
所述锁紧驱动结构还包括弹簧 13 ,所述弹簧 13的伸缩力方向沿所述锁紧 销 12的轴向设置， 所述弹簧 13位于所述锁紧销 12的外侧， 且所述弹簧 13 的一端与所述锁紧销 12固定连接， 另一端通过一个开口挡圈 14与所述摩擦 片 10连接。
在本实施例中， 锁紧时， 向下旋转锁紧手柄 4, 锁紧凸轮 26推动摩擦片 10, 带动锁紧销 12向前移动， 锁紧销 12前端顶住底座 2的外圓面 30, 靠锁 紧销 12前端面与外圓面 30的摩擦力来锁紧工作台 1与底座 2。 锁紧销 12上 的弹簧 13具有复位作用，松开锁紧手柄 4时，弹簧 13使锁紧销 12撤回复位。
请参考图 1和图 3 , 所述销孔 25和所述锁紧销 12的轴向均沿所述底座 2 的外圓面 30 的径向设置， 从而使得锁紧产生的静摩擦力的方向沿外圓面 30 的切线方向。
综上所述， 本发明利用一个旋转定位机构实现了底座和工作台之间旋转 位置的锁定， 还通过一个锁紧机构实现所述底座和工作台之间的锁紧， 而所 述旋转定位机构和锁紧机构均设置在一个与所述工作台固定连接的支架上， 使得整个装置结构更合理、 实用性更强， 而且仅仅通过单手操作就能实现锁 紧和锁定。 此外， 本发明利用所述工作台和旋转定位机构分别自所述底座的 上、 下两侧与所述底座连接， 从而使得工作台与旋转定位机构对底座起到了 夹持锁定的效果， 与现有技术中的定位机构相比， 其锁定的效果更佳。

Claims

权利要求
1. 一种斜切锯， 包括：
底座， 其下表面开设有多个 1HJ槽；
工作台， 可相对于底座旋转；
旋转定位机构， 包括一主体与所述工作台固定连接且可跟随工作台运动， 以及一凸台设于所述主体上， 用于卡入所述底座的多个凹槽中的一个， 使工 作台定位在相对于底座的一期望旋转位置上； 以及
锁紧机构， 可操作地连接于所述工作台， 用于将所述工作台锁紧在所述 期望旋转位置上。
2. 如权利要求 1所述的斜切锯， 其特征在于： 还包括一支架， 所述旋转 定位机构和锁紧机构通过所述支架与所述工作台固定连接。
3. 如权利要求 2所述的斜切锯， 其特征在于： 所述旋转定位机构的主体 是一制动簧片， 所述制动簧片的一端与所述支架固定连接。
4. 如权利要求 3所述的斜切锯， 其特征在于： 所述旋转定位机构还包括 邻近制动簧片的一簧片驱动结构， 用于驱动所述制动簧片在使所述凸台卡入 所述底座的多个凹槽中的一个的一第一位置和使得所述凸台脱开所述凹槽的 一第二位置之间运动。
5. 如权利要求 4所述的斜切锯， 其特征在于： 所述簧片驱动结构包括面 向制动簧片的锁定凸轮和一凸轮手柄， 所述凸轮手柄穿过所述锁定凸轮与支 架旋转连接， 所述凸轮手柄驱动所述锁定凸轮旋转以按压所述制动簧片在所 述第一位置和第二位置之间运动。
6. 如权利要求 5所述的斜切锯， 其特征在于： 所述凸轮手柄包括一手柄 转轴， 所述锁定凸轮上开有一轴孔， 所述手柄转轴穿过所述轴孔与支架旋转 连接， 所述凸轮手柄的径向截面和所述轴孔的形状都为非圓形。
7. 如权利要求 6所述的斜切锯， 其特征在于： 沿所述手柄转轴的轴向， 所述锁定凸轮位于所述支架和凸轮手柄之间， 所述支架与锁定凸轮之间还设 有轴用弹性挡圈， 所述锁定凸轮与凸轮手柄之间还设有波形弹性挡圈。
8. 如权利要求 1所述的斜切锯， 其特征在于： 所述锁紧机构包括锁紧销， 所述锁紧销穿过设于所述支架上的销孔与所述底座的外周面接触， 且通过所 述锁紧销的一端端面与所述底座的外周面之间接触产生的摩擦力实现所述工 作台的锁紧。
9. 如权利要求 8所述的斜切锯， 其特征在于： 所述锁紧机构还包括锁紧 手柄和摩擦片， 所述锁紧手柄上固定设有锁紧凸轮， 所述锁紧销的另一端端 面与所述摩擦片接触， 所述锁紧凸轮随所述锁紧手柄的旋转按压所述摩擦片， 从而推动所述锁紧销接触所述底座的外周面。
10. 如权利要求 9所述的斜切锯， 其特征在于： 所述锁紧手柄通过手柄转 动销与所述支架转动连接。
11. 如权利要求 9所述的斜切锯， 其特征在于： 所述锁紧驱动结构还包括 沿所述锁紧销的轴向设置在锁紧销和摩擦片之间的弹簧， 所述弹簧的一端与 所述锁紧销固定连接， 另一端通过一个开口挡圈与所述摩擦片连接。
12. 如权利要求 8所述的斜切锯， 其特征在于： 所述销孔和所述锁紧销的 轴向均沿所述底座的外周面的径向设置。
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US9533362B2 (en) 2017-01-03
CN103586532B (zh) 2016-01-06
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US10493542B2 (en) 2019-12-03
US20170113288A1 (en) 2017-04-27

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