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Novel self-tapping drill assembling bolt

A combination bolt, a new type of technology, applied in the directions of screws, repair drills, drilling tool accessories, etc., can solve problems such as poor adaptability, achieve high firmness and stability, improve adaptability, and reduce waste of resources.

Pending Publication Date: 2020-06-02
JIANGSU AWD FASTENER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing self-drilling and self-tapping screws are standardized standard parts formed in one piece, so their adaptability to workpieces of different thicknesses is poor

Method used

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  • Novel self-tapping drill assembling bolt
  • Novel self-tapping drill assembling bolt
  • Novel self-tapping drill assembling bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as Figure 1~2 As shown, the present invention is a novel self-tapping drill combination bolt, comprising a fixed bolt 1 and a tapping rod body 2, and the tapping rod body 2 includes an integrally formed tap screw tapping section 2-1 and a drill pipe drilling section 2 -2, the fixing bolt 1 includes a screw 1-1, one end of the screw 1-1 is assembled and connected with the free end of the tap screw tapping section 2-1 on the tapping rod body 2, and the other end of the screw 1-1 is fixed A hex nut 1-2 and a first connector 1-3 extending along the length direction of the screw rod 1-1 are provided; the end of the first connector 1-3 is set as a polygonal prism structure suitable for drilling equipment, Alternatively, the free end surface of the first connector 1-3 is provided with a third installation slot 1-3-1 suitable for drilling equipment; The thread segment 2-1 taps the external thread that matches the threaded slot.

[0034] As a preference, a first installa...

Embodiment 2

[0039] Such as image 3 As shown, the present invention is a novel self-tapping drilling combination bolt. The difference from Embodiment 1 is that the end face of one end of the assembled connection of the screw rod 1-1 and the tap screw tapping section 2-1 is provided with a first The installation slot 1-1-1, the free end of the tap screw tapping section 2-1 is provided with a third connector 2-4 that is compatible with the first installation slot 1-1-1, so The cross-sections of the first installation slot 1-1-1 and the third connector 2-4 are polygonal structures, and the fixing bolt 1 is tapped with the tap screw through the first installation slot 1-1-1 The third connection head 2-4 on the section 2-1 is fitly connected.

[0040] As a further preference, the cross-sections of the first installation slot 1-1-1 and the third connector 2-4 are both hexagonal.

Embodiment 3

[0042] Such as Figure 4 As shown, the present invention is a novel self-tapping drilling combination bolt, and the difference from Embodiment 1 is that the end where the screw 1-1 is assembled and connected with the tap screw tapping section 2-1 is provided with a second joint 1-4, the free end surface of the tap screw tapping section 2-1 is provided with a second installation slot 2-5 that is compatible with the second connector 1-4, and the second connector 1 -4 and the cross-section of the second installation slot 2-5 are polygonal structures, and the fixing bolt 1 passes through the second connection head 1-4 and the second installation slot on the tapping section 2-1 of the tap screw 2-5 chimeric connections.

[0043] As a preference, the free end of the tap screw tapping section 2-1 is also provided with an internal thread installation slot 2-6 coaxially penetrating through the upper port and the bottom of the second installation slot 2-5, and the second installation ...

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PUM

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Abstract

The invention discloses a novel self-tapping drill assembling bolt which comprises a fixed bolt and a tapping and drilling rod body, wherein the tapping and drilling rod body comprises a tap screw rodand a drill rod integrally formed; the fixed bolt comprises a screw rod; one end of the screw rod and the free end of the tap screw rod are assembled and connected; a hexagon nut and a first connector extending in the length direction of the screw rod are fixedly arranged at the other end of the screw rod; the tail end of the first connector is arranged to be a polygonal prism structure matched with drilling equipment, or a third mounting groove hole matched with the drilling equipment is formed in the free end surface of the first connector; an external thread matched with a threaded groovehole tapped by the tap screw rod is formed in the outer surface of the fixed bolt; and the fixed bolt and the free end of the tap screw rod are assembled and connected to be adapted to the requirementof a thicker workpiece to flexibly select or cut the fixed bolt with proper length, so that suitability of the fixed bolt is improved; and after drilling, tapping and fastening are finished at one time, the tapping and drilling rod body can be dismantled from the fixed bolt, so that resource waste of the tapping and drilling rod body is reduced.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a novel self-tapping drilling combination bolt. Background technique [0002] Self-tapping screws, or quick-thread screws, are quick-fit fasteners made of steel with galvanized surface passivation. Self-tapping screws are mostly used for the connection between thin metal plates (steel plates, saw boards, etc.). When connecting, first make a threaded bottom hole for the connected part, and then screw the self-tapping screw into the threaded bottom hole of the connected part. [0003] Statistics show that among the ten items that constitute the total assembly cost, the highest one includes hole processing. In practical applications, self-tapping screws need to process prefabricated holes. Moreover, in order to make the prefabricated holes play a good role in practical applications, the size of these holes must be controlled within a fairly strict range. In the early 1960s, se...

Claims

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Application Information

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IPC IPC(8): F16B35/00B23B51/08B23G5/20
CPCB23B51/08B23G5/20F16B35/002
Inventor 杨辉奚栋成陈磊磊田文彤
Owner JIANGSU AWD FASTENER
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