CN210013915U

CN210013915U - Novel lead bits type drilling screw rod

Info

Publication number: CN210013915U
Application number: CN201920798349.2U
Authority: CN
Inventors: 陈震; 曹芳群
Original assignee: Zhejiang Hongyang Beijing Great Automotive Components Co Ltd
Current assignee: Zhejiang Hongyang Beijing Great Automotive Components Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-02-04
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a novel chip-guiding type drilling screw, which comprises a screw body, a screw head and a self-tapping self-drilling drill bit, wherein the screw body is cylindrical, the surface of the screw body is coiled with external threads, the lower end of the screw body is provided with the screw head, one end of the surface of the screw body, which is close to the screw head, is provided with a light rod section, the upper end of the screw body is provided with the self-tapping self-drilling drill bit, the center of the screw body is also provided with a chip-guiding inner groove, the upper end of the chip-guiding inner groove is communicated with the self-tapping self-drilling drill bit, the lower end is communicated with the screw head, the utility model discloses a chip-guiding inner groove is arranged in the screw, the surface of the screw is provided with a chip-guiding outer groove, chips generated by the self-tapping self-drilling drill bit in the drilling process can be discharged through the chip-guiding inner groove and the, preventing looseness.

Description

Novel lead bits type drilling screw rod

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of screw rod, especially lead the technical field of bits type drilling screw rod.

[ background of the invention ]

The self-tapping screw is a screw with a drill bit, and drilling, tapping, fixing and locking are completed at one time through construction of a special electric tool. The self-tapping screw is mainly used for connecting and fixing thin plate pieces, such as connection of a color steel plate and a color steel plate, connection of the color steel plate, purlines and wall beams and the like, and the penetration capacity of the self-tapping screw is generally not more than 6mm and maximally not more than 12 mm. The self-tapping screw is often exposed outdoors and has strong corrosion resistance; the rubber sealing ring can ensure that the screw is not seeped with water and has good corrosion resistance. Self-tapping screws are generally described in terms of three parameters, the number of threads per inch of length, and the length of the screw. The number of screw diameter stages is 10 stages and 12 stages, and the diameters of the corresponding screws are 4.87mm and 5.43mm respectively; the number of threads per inch is in the order of 14, 16 and 24, and the larger the number of threads per inch, the stronger the self-drilling capability of the drill bit. However, since the tapping screw is drilled, tapped, fixed and locked once in the tightening process, a large amount of chips can be produced in the drilling process, but the existing tapping screw has no chip removal function or poor chip removal function, and the chips generated in the drilling process are accumulated in the hole to influence the drilling and the tightening of the screw.

Chinese utility model patent publication No. CN206928906U discloses "a lead bits type drilling screw rod", including the screw rod body, the screw rod body on be provided with the screw thread, the head end of screw rod body be provided with and connect the commentaries on classics, the inside of connecting the commentaries on classics be provided with interior hexagonal hole, the inside of screw rod body be provided with and lead bits passageway, lead bits passageway link up to terminal from the head end of screw rod body, and lead the head end and interior hexagonal hole of bits passageway and communicate with each other, the middle part of screw rod body be provided with and deposit bits district, deposit the external diameter of thread on the bits district and be less than and deposit the external diameter of thread of the part beyond the bits district. Although this application has the chip guide groove, the exit end of chip guide groove is located the interior hexagonal of connecting the bull head downthehole, and when using the allen key to twist this screw rod, the export of chip guide groove is blocked by the allen key, can't carry out the chip removal, and the chip removal ability of this application is relatively poor.

[ Utility model ] content

The utility model discloses an aim at solving the problem among the prior art, provide a novel lead bits type drilling screw rod, can effectively discharge downthehole piece at self tapping screw drilling in-process, avoid influencing the tightening of punching quality and screw.

In order to realize the purpose, the utility model provides a novel lead bits type drilling screw rod, from boring the drill bit including screw rod body, spiral shell head, self tapping, the screw rod body be the cylinder type, screw rod body surface coil and be equipped with the external screw thread, screw rod body lower extreme be equipped with the spiral shell head, the screw rod body surface one end that is close to the spiral shell head be equipped with the polished rod section, screw rod body upper end be equipped with self tapping from boring the drill bit, screw rod body center still be equipped with lead bits inside groove, lead bits inside groove upper end intercommunication self tapping from boring drill bit, lower extreme intercommunication spiral shell head.

Preferably, the chip guide inner groove comprises a main inner groove, chip guide groove discharge ports and chip guide groove inlets, the main inner groove is vertically arranged at the center of the screw body, the chip guide groove discharge ports are transversely arranged in the screw head, the center of the chip guide groove discharge ports is communicated with the main inner groove, the chip guide groove discharge ports penetrate through two sides of the screw head, the number of the chip guide groove inlets is two, the two chip guide groove inlets are respectively and symmetrically arranged at the lower ends of two cutting edges of the self-tapping self-drilling drill, and the lower ends of the chip guide groove inlets are communicated with the upper end of the main inner groove.

Preferably, the surface of the screw body is also provided with a chip guide outer groove.

Preferably, the chip guide outer groove penetrates through the external thread and the polished rod section, the chip guide outer groove is wound on the screw body at a small angle, and the winding direction of the chip guide outer groove is the same as the winding direction of the external thread.

Preferably, an annular rib is further arranged between the screw body and the screw head, and the diameter of the annular rib is larger than that of the screw body and that of the screw head.

Preferably, the annular baffle is evenly provided with a plurality of anti-skidding lines on the plane of one end facing the screw body.

Preferably, the outer surface of the lower end of the screw head is provided with a wrench bayonet part matched with a bayonet wrench, and the wrench bayonet part is an outer hexagonal wrench bayonet part.

Preferably, the center of the lower end of the screw head is provided with a wrench clamping groove which can be matched with a screwdriver, and the wrench clamping groove is a straight wrench clamping groove or a cross wrench clamping groove.

The utility model relates to a novel lead beneficial effect of bits type drilling screw: the utility model discloses a set up the lead bits inside groove in with the screw rod, the screw rod surface sets up the lead bits ectosome, and the self tapping can be discharged through lead bits inside groove and lead the bits ectosome from the piece that the drill bit produced at drilling process, avoids influencing the tightening of quality and screw rod of punching, and the anti-skidding line of annular flange lower extreme can strengthen frictional force, prevents not hard up.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a front view of a novel chip-guiding drilling screw according to the present invention;

FIG. 2 is a front sectional view of the novel chip-guiding type drilling screw of the present invention;

fig. 3 is a schematic structural view and a top view of the novel chip-guiding type drilling screw of the present invention.

In the figure: 1-screw body, 2-screw head, 3-self-tapping self-drilling drill bit, 4-annular flange, 11-external thread, 12-polished rod section, 13-chip guide internal groove, 14-chip guide external groove, 21-wrench bayonet part, 22-wrench bayonet groove, 41-antiskid line, 131-main internal groove, 132-chip guide groove discharge port and 133-chip guide groove inlet.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the utility model relates to a novel chip guide type drilling screw, which comprises a screw body 1, a screw head 2 and a self-tapping self-drilling drill bit 3, wherein the screw body 1 is cylindrical, an external thread 11 is coiled on the surface of the screw body 1, the screw head 2 is arranged at the lower end of the screw body 1, a light rod section 12 is arranged at one end of the surface of the screw body 1 close to the screw head 2, the self-tapping self-drilling drill bit 3 is arranged at the upper end of the screw body 1, a chip guide internal groove 13 is also arranged at the center of the screw body 1, the upper end of the chip guide internal groove 13 is communicated with the self-tapping self-drilling drill bit 3 and the lower end is communicated with the screw head 2, the chip guide internal groove 13 comprises a main internal groove 131, a chip guide groove discharge port 132 and a chip guide inlet 133, the main internal groove 131 is vertically arranged at the center of the screw body 1, the chip guide groove discharge port 132 is transversely arranged in the screw, the chip guide groove discharge port 132 is arranged by penetrating through two sides of the screw head 2, the chip guide groove inlets 133 are two, the two chip guide groove inlets 133 are respectively symmetrically arranged at the lower ends of two cutting edges of the self-tapping self-drilling drill bit 3, the lower ends of the chip guide groove inlets 133 are communicated with the upper end of the main inner groove 131, the surface of the screw body 1 is also provided with a chip guide outer groove 14, the chip guide outer groove 14 penetrates through the external thread 11 and the polished rod section 12, the chip guide outer groove 14 is arranged by winding the screw body 1 at a small angle, the winding direction of the chip guide outer groove 14 is the same as that of the external thread 11, an annular flange 4 is also arranged between the screw body 1 and the screw head 2, the diameter of the annular flange 4 is larger than that of the screw body 1 and the screw head 2, and a plurality of anti-skid grains 41 are uniformly arranged on the annular flange 4 towards one end plane of the screw body 1, 2 lower extreme surfaces of spiral shell head be equipped with can with bayonet socket spanner complex spanner bayonet part 21, spanner bayonet part 21 be outer hexagonal spanner bayonet part, 2 lower extreme centers of spiral shell head be equipped with can with screwdriver complex spanner draw-in groove 22, spanner draw-in groove 22 be a word spanner draw-in groove or cross spanner draw-in groove.

The utility model discloses the working process:

the utility model relates to a novel lead bits type drilling screw rod utilizes outer hexagonal spanner to block spanner bayonet portion 21 or utilizes the screwdriver to block spanner draw-in groove 22 and applys the revolving force to the screw rod in the course of the work, with the self tapping from boring drill bit 3 and aim at required fixed position, rotatory screw rod, the self tapping bores required fixed orifices from boring drill bit 3, lead bits inside groove 13 and lead bits outer groovy 14 combined action will effectively discharge downthehole piece with the drilling process, avoid influencing the tightening of quality of punching and screw.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a novel lead bits type drilling screw which characterized in that: including screw rod body (1), spiral shell head (2), self tapping from boring drill bit (3), screw rod body (1) be the cylinder type, screw rod body (1) surface coil and be equipped with external screw thread (11), screw rod body (1) lower extreme be equipped with spiral shell head (2), the one end that screw rod body (1) surface is close to spiral shell head (2) be equipped with polished rod section (12), screw rod body (1) upper end be equipped with self tapping from boring drill bit (3), screw rod body (1) center still be equipped with lead bits inside groove (13), lead bits inside groove (13) upper end intercommunication self tapping from boring drill bit (3), lower extreme intercommunication spiral shell head (2).

2. The novel chip-guiding type drilling screw according to claim 1, wherein: lead bits inside groove (13) including main inside groove (131), chip guide groove discharge port (132) and chip guide groove entry (133), main inside groove (131) vertically locate screw body (1) center, chip guide groove discharge port (132) transversely locate in spiral shell head (2), chip guide groove discharge port (132) center and main inside groove (131) intercommunication, chip guide groove discharge port (132) run through spiral shell head (2) both sides setting, chip guide groove entry (133) have two, two chip guide groove entries (133) respectively the symmetry locate two blade lower extremes of self-tapping self-drilling drill bit (3), chip guide groove entry (133) lower extreme all communicate with main inside groove (131) upper end.

3. The novel chip-guiding type drilling screw according to claim 1, wherein: the surface of the screw body (1) is also provided with a scrap guide outer groove (14).

4. A novel chip-guiding type drilling screw as claimed in claim 3, wherein: lead bits outer tank (14) run through external screw thread (11) and polished rod section (12), lead bits outer tank (14) coil screw body (1) setting with a small angle, the coil orientation of leading bits outer tank (14) the same with the coil orientation of external screw thread (11).

5. The novel chip-guiding type drilling screw according to claim 1, wherein: an annular flange (4) is further arranged between the screw body (1) and the screw head (2), and the diameter of the annular flange (4) is larger than that of the screw body (1) and the screw head (2).

6. The novel chip guide type drilling screw according to claim 5, wherein: and a plurality of anti-skid grains (41) are uniformly arranged on the plane of one end of the annular flange (4) facing the screw body (1).

7. The novel chip-guiding type drilling screw according to claim 1, wherein: the outer surface of the lower end of the screw head (2) is provided with a wrench bayonet part (21) matched with a bayonet wrench, and the wrench bayonet part (21) is an outer hexagonal wrench bayonet part.

8. The novel chip-guiding type drilling screw according to claim 1, wherein: the wrench is characterized in that a wrench clamping groove (22) matched with a screwdriver is formed in the center of the lower end of the screw head (2), and the wrench clamping groove (22) is a straight wrench clamping groove or a cross wrench clamping groove.