WO2021088284A1 - 一种螺钉钻孔取出一体工具 - Google Patents

一种螺钉钻孔取出一体工具 Download PDF

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Publication number
WO2021088284A1
WO2021088284A1 PCT/CN2020/078795 CN2020078795W WO2021088284A1 WO 2021088284 A1 WO2021088284 A1 WO 2021088284A1 CN 2020078795 W CN2020078795 W CN 2020078795W WO 2021088284 A1 WO2021088284 A1 WO 2021088284A1
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Prior art keywords
taper hole
taper
extractor
screw
integrated tool
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PCT/CN2020/078795
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English (en)
French (fr)
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王宏嘉
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上海钰工机电有限公司
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Publication of WO2021088284A1 publication Critical patent/WO2021088284A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/08—Drills combined with tool parts or tools for performing additional working
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/18—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same withdrawing broken threaded parts or twist drills

Definitions

  • the utility model relates to the technical field of metal cutting processing and the design and processing of metal cutting tools (twist drills, milling cutters, screwdrivers, wrenches), in particular to a screw drilling and extraction integrated tool.
  • the screw (also called screw) driving groove is partially damaged, for example, the cross groove of the screw is damaged, when the screw needs to be removed, the claws of the screwdriver (screwdriver) cannot catch the screw and transmit the torque to make the screw screw in or out.
  • an electric drill In daily life, an electric drill is generally used.
  • the existing screw extractor is installed on the drill bit to remove the screw.
  • the screw extractor can be a screwdriver (screwdriver) of various types that matches the screw drive slot. Large instantaneous impact loads are likely to cause secondary damage to tools, screws and connected objects, causing unnecessary losses.
  • the present invention proposes an integrated screw drilling and extraction tool, which includes a body, one end of the body is a taper hole drill, the other end is an extractor, and a safety unloading groove is provided in the middle of the body.
  • the taper hole drill has a step drill structure.
  • taper hole drill is designed as a left cutting edge that facilitates the withdrawal of the wire.
  • the claws of the extractor are designed to be distributed in a left-handed spiral to reduce the axial thrust to be applied to the screw.
  • taper and taper of the taper hole drill match the taper and taper of the extractor for tight engagement.
  • the smallest outer diameter of the taper hole drill is smaller than the smallest end outer diameter of the extractor.
  • the maximum outer diameter of the taper hole drill is smaller than the maximum end outer diameter of the extractor.
  • the length of the blade of the taper hole drill is greater than the length of the blade of the extractor.
  • the taper hole drill has a taper angle for forming one or more triangular boss portions on the drilled screw. .
  • the screw drilling and extraction integrated tool proposed by the present invention includes a body, one end of the body is a taper hole drill, the other end is an extractor, and a safety unloading groove is provided in the middle of the body.
  • a safe unloading slot is specially designed; the safe unloading slot will be elastically deformed when subjected to excessive instantaneous impact load. Go to overload, play a role in safety protection.
  • Figure 1 is a schematic structural view of an integrated screw drilling and extracting tool according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the working mechanism analysis of the taper hole drill and the extractor of the integrated screw drilling and extracting tool according to the embodiment of the present invention
  • Figure 3 is a schematic diagram of the comparative analysis of the working mechanism of the screw drilling and extraction integrated tool and the ordinary extractor.
  • the terms “connected”, “fixed”, etc. should be understood in a broad sense, for example, “fixed” can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless specifically defined otherwise.
  • “fixed” can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless specifically defined otherwise.
  • the specific meaning of the above-mentioned terms in the present utility model can be understood according to specific circumstances.
  • FIG. 1 is a schematic diagram of the structure of an integrated tool for screw drilling and extraction.
  • the upper part of Fig. 1 is a side view of the integrated screw drilling and extraction tool; the middle part of Fig. 1 is a top view of the side view from the M direction; the middle part of Fig. 1 is an axial cross-sectional view of the taper hole drill on the left; the lower part of Fig. 1 is a screw hole A top view from the K direction of the side view of the extraction tool; the axial cross-sectional view of the extractor on the lower left side of Fig. 1; the right side of the lower part of Fig. 1 is a perspective view of the screw drill extraction tool.
  • the integrated screw drilling and extraction tool 100 includes a main body 10, one end of the main body 10 is a taper hole drill 1, the other end is an extractor 2, and a safety unloading groove 3 is provided in the middle of the main body 10.
  • a safe unloading groove 3 is designed in the middle of the screw drilling and extraction integrated tool 100; when it is subjected to excessive instantaneous impact When the load is loaded, the safety unloading slot 3 generates elastic deformation to unload the overload, which plays a role of safety protection.
  • the taper hole drill 1 and the extractor 1 are integrated, which is convenient to carry and use.
  • the safe unloading groove 3 is also called an empty tool groove or an undercut groove, which facilitates the withdrawal of the tool, and is mainly capable of accommodating the screw drilling and extraction integrated tool 100 to withdraw the tool when there is no cutting force.
  • the taper hole drill 1 has a stepped drill structure, which can better drill the taper holes needed to match the extractor 2 and also facilitate the engagement of the claws on the extractor 2 with the screws; for details, please refer to figure 2.
  • Figure 2 is a schematic diagram of the working mechanism (state) analysis of the taper hole drill and the extractor of the screw drilling and extracting integrated tool.
  • the screw is turned forward to tighten, and reverse to remove.
  • the taper hole drill 1 is designed as a left cutting edge, and the torque when the taper hole is drilled is consistent with the direction of disassembly (reversal), which facilitates the withdrawal of the screw.
  • the design of the left cutting edge of the taper hole drill 1 is to make the torque when drilling the taper hole consistent with the direction of disassembly, which is conducive to the withdrawal of the screw and avoids the unfavorable factors of the general right-handed drill bit's drilling force tightening; the operation of allowing the screw to be taken out More labor-saving, time-saving and faster.
  • the claws 21 of the extractor 2 are designed to be distributed in a left-handed spiral, so that the claws 21 and the screws of the extractor 2 are grasped more firmly, so that the claws 21 and the screws are more firmly grasped, which can be better and more labor-saving.
  • the torque is transmitted more reliably to meet the working torque to be transmitted.
  • the upper left side of Figure 2 is an analysis diagram of the taper hole drill 1 and the drilled taper hole
  • the lower left side of Figure 2 is an enlarged view of part I in the upper left side figure
  • the upper right side of Figure 2 is the extractor 2 Analyze the schematic diagram.
  • the lower right side of Fig. 2 is an enlarged view of part II in the upper right side. 1 and 2, the minimum outer diameter d1 of the taper hole drill 1 of the integrated screw drilling and extracting tool 100 of the embodiment of the present application is smaller than the minimum end outer diameter d of the extractor 2.
  • the enlarged part is the taper hole drilled by taper hole drill 1. Since the taper drill 1 has a certain taper angle ⁇ 1 (or half taper angle ⁇ 1/2), a plurality of (the total length of the viewing taper and the height of each step of the taper drill) triangular boss portions 11 are formed, which is It is more conducive for the claws of the left-handed spirally distributed claws 21 on the extractor 2 to be fastened firmly (see the enlarged part of II). This design is more convenient for the claws to bite in and bite, and transfer out the due Greater torque (force). For details, see the comparison schematic diagram in Figure 3.
  • the taper and taper of the taper hole drill 1 match the taper and taper of the extractor 2 for tight engagement.
  • the working efficiency is improved; the working part of the extractor 2 is tightly engaged with the stepped taper hole drilled by the taper hole drill 1, without applying axial pressure to maintain mutual engagement, and the damaged screw can be removed smoothly.
  • the upper part is the working claw 11 of the taper hole drill 1 of the integrated screw drilling and extraction tool 100 according to the embodiment of the application (engaged) state;
  • the middle part of Fig. 3 is the claw in the general conical hole (The taper hole in the form of a step drill that is not the embodiment of the present application) is in the working state (in bite);
  • the lower part of Fig. 3 shows the claw working in the straight hole (in bite).
  • the engagement surface of a single claw 21 is obviously larger than the engagement surface of the claw 21 in a general taper hole.
  • the number of turns of the engagement surface of the tooth claw 21 (at this time ⁇ the number of steps for taper hole drilling, the figure is only One step) is obviously larger than the number of turns of the tooth jaw 21 on the engagement surface of the general cone hole, because the number of turns of the engagement surface of the general cone hole is one segment, while the step cone drilled by the taper hole drill 1 of the embodiment of the present application
  • the number of turns of the engagement surface of the hole is greater than one; the number of turns of the engagement surface of the stepped taper hole drilled by the taper hole drill 1 of the embodiment of the present application is more than the number of the straight hole engagement surface (only one turn) .
  • the engagement surface of the claw 4 on each circle Number number of claws.
  • the stepped taper hole should be>general taper hole>straight hole.
  • the integrated screw drilling and extraction tool of the embodiment of the present invention can easily and smoothly remove/remove the screw with the damaged drive groove (discarded) from the connected or fixed object.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Abstract

一种螺钉钻孔取出一体工具，包括本体（10），本体（10）的一端为锥孔钻（1），另一端为取出器（2），且本体（10）的中部设有安全卸载槽（3）。螺钉钻孔取出一体工具具有安全卸载槽，可避免在卸除螺钉时造成工具、螺钉及联接物体的二次破坏，起到安全保护作用。

Description

一种螺钉钻孔取出一体工具 技术领域
本实用新型涉及金属切削加工及金属切削工具(麻花钻、铣刀、螺钉批、扳手)的设计和加工技术领域，尤其涉及一种螺钉钻孔取出一体工具。
背景技术
由于螺钉(也称螺丝)驱动槽部分损坏，例如螺钉的十字槽的损坏，当需要取出螺钉时，螺钉批(螺钉刀)的齿爪就不能卡住螺钉并传递扭力使螺钉旋进或退出。
日常中，一般使用电钻，在钻头安装现有螺钉取出器来实现拆卸螺钉，螺钉取出器可以为配合螺钉驱动槽的各种型号的螺钉批(螺钉刀)，在卸除螺钉时，当承受过大的瞬间冲击载荷时，容易造成工具、螺钉及联接物体的二次破坏，带来不必要的损失。
实用新型内容
基于现有技术的螺钉取出器当承受过大的瞬间冲击载荷时，容易造成工具、螺钉及联接物体的二次破坏的技术问题，提出一种螺钉钻孔取出一体工具。
为实现上述目的，本实用新型提出一种螺钉钻孔取出一体工具，包括本体，所述本体的一端为锥孔钻，另一端为取出器，且所述本体的中部设有安全卸载槽。
进一步地，所述锥孔钻为阶梯钻结构。
进一步地，所述锥孔钻设计成利于丝退出的左切刃。
进一步地，所述取出器的齿爪设计为按左旋螺旋分布，以减少所要施加到螺钉上的轴向推力。
进一步地，所述锥孔钻的阶梯锥形和锥度与所述取出器的锥形和锥度匹配以紧密啮合。
进一步地，所述锥孔钻的最小外径小于所述取出器的最小端外径。
进一步地，所述锥孔钻的最大外径小于所述取出器的最大端外径。
进一步地，所述锥孔钻的刃部长度大于所述取出器的刃部长度。
进一步地，所述锥孔钻具有锥角，用于在被钻孔螺钉上形成一个或多个三角形的凸台部分。。
进一步地，
为实现上述目的，本实用新型提出的螺钉钻孔取出一体工具，包括本体，所述本体的一端为锥孔钻，另一端为取出器，且所述本体的中部设有安全卸载槽。为避免在卸除螺钉是造成工具、螺钉及联接物体的二次破坏造成不必要的更多损失，特意设计出安全卸载槽；当承受过大的瞬间冲击载荷时安全卸载槽产生弹性变形从而卸去超载，起到安全保护作用。
附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1是本实用新型实施例的螺钉钻孔取出一体工具的结构示意图；
图2是本实用新型实施例的螺钉钻孔取出一体工具的锥孔钻和取出器的工作机理分析示意图；
图3是螺钉钻孔取出一体工具与普通取出器的在钻孔工作机理的对比分析示意图。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
需要说明，本实用新型实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应 地随之改变。
另外，在本实用新型中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本实用新型要求的保护范围之内。
在本实用新型中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
为实现上述目的，本实用新型提出螺钉钻孔取出一体工具100。图1为螺钉钻孔取出一体工具的结构示意图。图1的上部为螺钉钻孔取出一体工具的侧视图；图1的中部中间为侧视图的M向俯视图；图1的中部左边锥孔钻的轴向剖视图；图1的下部中间为螺钉钻孔取出一体工具侧视图的K向俯视图；图1的下部左边取出器的轴向剖视图；图1的下部右侧为螺钉钻孔取出一体工具的立体图。如图1所示，螺钉钻孔取出一体工具100包括本体10，所述本体10的一端为锥孔钻1，另一端为取出器2，且所述本体的中部设有安全卸载槽3。
为避免在卸除螺钉是造成工具、螺钉及联接物体的二次破坏造成不必要的更多损失，在螺钉钻孔取出一体工具100的中部设计出安全卸载槽3；当承受过大的瞬间冲击载荷时安全卸载槽3产生弹性变形从而卸去超载，起到安全保护作用。而且，锥孔钻1和取出器1集于一体，方便携带和使用。
具体地，安全卸载槽3也称空刀槽、退刀槽，方便刀具的退出，主要是能容纳螺钉钻孔取出一体工具100在没有切削力的状态下退刀。
具体地，所述锥孔钻1为阶梯钻结构，可以更好的钻出所需的与取出器2配套的锥孔，还有利于取出器2上的齿爪与螺钉的咬合；具体可参阅图2。图 2为螺钉钻孔取出一体工具的锥孔钻和取出器的工作机理(状态)分析示意图。
一般地，螺钉正转为拧紧，反转为拆除。进一步地，锥孔钻1设计成左切刃，在钻出锥孔时的转矩与拆卸的方向(反转)一致，有利于螺钉退出。锥孔钻1左切刃的设计是为了在钻出锥孔时的转矩与拆卸的方向一致，有利于螺钉退出，避免了一般右旋钻头钻力旋紧的不利因素；让螺钉取出的作业更加省力、省时和快捷。
可选地，取出器2的齿爪21设计为按左旋螺旋分布，使得取出器2的齿爪21与螺钉越抓越牢靠，使得齿爪21与螺钉越抓牢固，能够更好、更省力、更可靠地传递扭力，以满足所要传递的工作扭力。
图2的上部左侧为锥孔钻1与钻出的锥孔的分析示意图，图2的下部左侧为上部左侧图中Ⅰ部的放大图；图2的上部右侧为取出器2的分析示意图，图2的下部右侧为上部右侧图中Ⅱ部的放大图。参阅图1和图2，本申请实施例的螺钉钻孔取出一体工具100的锥孔钻1的最小外径d1＜取出器2的最小端外径d。
锥孔钻1的最大外径d4＜取出器2的最大端外径d5。
锥孔钻1的刃部长度(L5)＞取出器2的刃部长度(L4)。
Ⅰ放大处为锥孔钻1钻出的锥孔。由于锥孔钻1有一定的锥角α1(或半锥角α1/2)，就形成了多个(视锥度的总长度及锥钻的每个台阶高度)三角形的凸台部分11，这就更加有利于取出器2上的左旋螺旋分布的齿爪21的爪紧固牢(见Ⅱ放大处)，这样的设计较一般的锥孔更便于齿爪的啮入、咬合，传递出应有的更大的扭矩(力)。具体可见图3的对比示意图。
优选地，所述锥孔钻1的阶梯锥形和锥度与所述取出器2的锥形和锥度匹配以紧密啮合。由此，工作效率得以提高；取出器2的工作部分与锥孔钻1所钻的带有阶梯的锥孔咬合紧密，不需施加轴向压力即可保持相互啮合，可顺利取出受损螺钉。
图3中，上部为本申请实施例的螺钉钻孔取出一体工具100的锥孔钻1的齿爪11在台阶锥孔内工作(啮入咬合)状态；图3中部为齿爪在一般锥孔(非本申请实施例的阶梯钻形式的锥孔)内工作(啮入咬合)状态；图3下部为齿爪在直孔内工作(啮入咬合)状态。
当使用相同的取出器2上的齿爪21在锥孔钻1钻出的台阶锥孔内工作时， 单个齿爪21的啮入面显然要大于齿爪21在一般锥孔的啮入面。
当相同的取出器2上的齿爪21在锥孔钻1钻出的台阶锥孔内工作时，齿爪21的啮入面的圈数(此时≌锥孔钻的台阶数，图示仅一台阶)显然要大于齿爪21在一般锥孔的啮入面的圈数，因为一般锥孔的啮入面的圈数为一段，而本申请实施例的锥孔钻1钻出的台阶锥孔的啮入面的圈数大于一圈；本申请实施例的锥孔钻1钻出的台阶锥孔的啮入面的圈数更要比直孔啮入面圈(只有一圈)数多。
相同的取出器2上的齿爪21无论在锥孔钻1钻出的台阶锥孔，还是在一般锥孔、甚至是直孔内工作时，在每一圈上齿爪④的啮入面的个数＝齿爪个数。就工作时齿爪21啮入咬合的总个数(或总面积)而言，显然是：台阶锥孔要＞一般锥孔＞直孔。
综上所述，本实用新型实施例的螺钉钻孔取出一体工具，把驱动槽已经受损的螺钉(已报废)比较能够容易而顺利地从被联接或固定的物件上拆卸/移除下来。
以上仅为本实用新型的优选实施例，并非因此限制本实用新型的专利范围，凡是在本实用新型的发明构思下，利用本实用新型说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本实用新型的专利保护范围内。

Claims (9)

  1. 一种螺钉钻孔取出一体工具，其特征在于，包括本体，所述本体的一端为锥孔钻，另一端为取出器，且所述本体的中部设有安全卸载槽。
  2. 根据权利要求1所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻为阶梯钻结构。
  3. 根据权利要求2所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻设计成利于丝退出的左切刃。
  4. 根据权利要求2所述的螺钉钻孔取出一体工具，其特征在于，所述取出器的齿爪设计为按左旋螺旋分布，以减少所要施加到螺钉上的轴向推力。
  5. 根据权利要求2所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻的阶梯锥形和锥度与所述取出器的锥形和锥度匹配以紧密啮合。
  6. 根据权利要求5所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻的最小外径小于所述取出器的最小端外径。
  7. 根据权利要求6所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻的最大外径小于所述取出器的最大端外径。
  8. 如权利要求7所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻的刃部长度大于所述取出器的刃部长度。
  9. 如权利要求1-8任一项所述的螺钉钻孔取出一体工具，其特征在于，所述锥孔钻具有锥角，用于在被钻孔螺钉上形成一个或多个三角形的凸台部分。
PCT/CN2020/078795 2019-11-06 2020-03-11 一种螺钉钻孔取出一体工具 WO2021088284A1 (zh)

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CN205021528U (zh) * 2015-09-24 2016-02-10 浙江斐凌工具有限公司 一种断头螺丝钻头
CN206663131U (zh) * 2017-03-08 2017-11-24 上海钰工机电有限公司 配套新结构螺丝取出器用阶梯钻

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Publication number Priority date Publication date Assignee Title
US4777850A (en) * 1986-05-09 1988-10-18 Drill-Out, Inc. Drill-out threaded broken bolt extractor
US5251516A (en) * 1991-11-14 1993-10-12 Alden Corporation Tool for extracting broken bolts and the like
CN203831351U (zh) * 2014-02-26 2014-09-17 宁波博高国际贸易有限公司 一种断头螺丝取出器
CN205021528U (zh) * 2015-09-24 2016-02-10 浙江斐凌工具有限公司 一种断头螺丝钻头
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