CN113182564A

CN113182564A - Side direction fluting drill bit

Info

Publication number: CN113182564A
Application number: CN202110511554.8A
Authority: CN
Inventors: 白筱萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-07-30

Abstract

The invention discloses a lateral slotting drill bit, which relates to the technical field of drilling tools and comprises an outer sleeve, a propelling head and a lateral drill bit, wherein the propelling head is arranged in the outer sleeve, the outer sleeve rotates synchronously with the propelling head, the propelling head can slide along the axial direction of the outer sleeve, the vertical distance from the front end of the propelling head to the axial line of the outer sleeve is smaller than the vertical distance from the rear end of the propelling head to the axial line of the outer sleeve, the outer sleeve is provided with a lateral hole, the lateral drill bit is arranged in the lateral hole, the lateral drill bit can slide along the axial line of the lateral hole, and the inner end of the lateral drill bit is abutted against the propelling head. When in use, the propelling head feeds, and the propelling head is small in front and large in back, so that the lateral drill bit is forced to extend out of the lateral hole; as the drive head and outer sleeve rotate, the lateral drill bit rotates about the axis of the drive head, thereby laterally slotting the vertical bore.

Description

Side direction fluting drill bit

Technical Field

The invention relates to the technical field of drilling tools, in particular to a lateral slotting drill bit.

Background

Drill bits (twist drills) are tools that cut or drill round holes in the surface of a workpiece by rotating about their axis, the chip flutes of which are shaped like a twist helix, with 2, 3 or more flutes, but 2 being the most common. The drill bit may be held for use on a hand-held drilling tool, a drilling machine, a milling machine, a lathe or even a machining center, which may be manual or powered. The bit material is typically high speed tool steel or cemented carbide.

In some special cases, it is necessary to machine a larger diameter groove, also called a lateral slot, in the drilled hole (bore). If the diameter of the formed hole is larger, the lateral groove can be processed in the form of boring holes and the like. If the diameter of the formed hole is small, the cutter bar and the cutter cannot extend into the formed hole, and a lateral groove cannot be machined.

Disclosure of Invention

Therefore, the invention provides a lateral slotting drill bit, which aims to solve the technical problem that the existing drill bit can only process a vertical hole and cannot perform lateral slotting in the vertical hole.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a side direction fluting drill bit, includes the outer sleeve, advances head and side direction drill bit, advance the head set up in the outer sleeve, the outer sleeve is followed advance the head synchronous revolution, advance the head and can follow the axis direction of outer sleeve slides, advance the front end distance of head the perpendicular distance of the axis of outer sleeve is less than advance the rear end distance of head the perpendicular distance of the axis of outer sleeve, the outer sleeve is equipped with the side direction hole, the side direction drill bit set up in the side direction is downthehole, just the side direction drill bit can be followed the axis of side direction hole slides, the inner of side direction drill bit with advance the head and offset.

Furthermore, the lateral holes are provided with a plurality of lateral holes which are uniformly distributed on the same circumference of the outer sleeve, and each lateral hole is provided with one lateral drill bit in a penetrating way.

Furthermore, the surface of the propelling head is provided with a sliding groove, the sliding groove is arranged along the front-back direction, the sliding groove corresponds to the number and the position of the lateral holes, the inner end of the lateral drill bit is positioned in the sliding groove, and the inner end of the lateral drill bit is abutted to the groove bottom of the sliding groove.

Further, the lateral slotting drill further comprises a return spring, one end of the return spring is fixed to the outer sleeve, one end of the return spring is connected with the portion, located in the outer sleeve, of the lateral drill, and the return spring has elastic force enabling the lateral drill to move towards the axis of the outer sleeve.

Further, the lateral slotting drill further comprises an adjusting seat, and the adjusting seat is telescopically and lockably fixed at the front end of the outer sleeve.

Furthermore, the adjusting seat is in threaded connection with the outer sleeve, and an adjusting nut is screwed outside the adjusting seat.

Further, the lateral slotting drill bit also comprises a drill rod, and the propelling head is arranged at the front end of the drill rod.

Further, side direction fluting drill bit still includes spacing cap and circlip, spacing cap is screwed in the rear end of outer sleeve, the part that is close to of drilling rod the advancing head is equipped with the necking down structure, the circlip cover is located the necking down structure, just the circlip presss from both sides and locates spacing cap with between the outer sleeve, the circlip can be followed the necking down structure slides.

The invention has the following advantages:

when in use, the propelling head feeds, and the propelling head is small in front and large in back, so that the lateral drill bit is forced to extend out of the lateral hole; as the drive head and outer sleeve rotate, the lateral drill bit rotates about the axis of the drive head, thereby laterally slotting the vertical bore.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.

FIG. 1 is a schematic diagram of a lateral slot drill according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a side-facing fluted drill bit according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating the installation position of a return spring of a lateral slotting drill bit according to an embodiment of the present invention;

FIG. 4 is a schematic view of another installation position of a return spring of a lateral slotting drill bit according to an embodiment of the present invention;

fig. 5 is a schematic diagram of the installation position of the circlip of the side slotting drill bit according to the embodiment of the invention.

In the figure: the method comprises the following steps of 1-an outer sleeve, 2-a pushing head, 3-a lateral drill bit, 4-a chute, 5-a return spring, 6-an adjusting seat, 7-an adjusting nut, 8-a drill rod, 9-a necking structure, 10-a limiting cap and 11-an elastic retainer ring.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

As shown in fig. 1 to 3, a side-slotting drill comprises an outer sleeve 1, a thrust head 2 and a side-drilling bit 3. The propelling head 2 is arranged in the outer sleeve 1, the outer sleeve 1 synchronously rotates along with the propelling head 2, the propelling head 2 can slide along the axis direction of the outer sleeve 1, the vertical distance between the front end of the propelling head 2 and the axis of the outer sleeve 1 is smaller than the vertical distance between the rear end of the propelling head 2 and the axis of the outer sleeve 1, the outer sleeve 1 is provided with a lateral hole, the lateral drill bit 3 is arranged in the lateral hole, the lateral drill bit 3 can slide along the axis of the lateral hole, the inner end of the lateral drill bit 3 is abutted to the propelling head 2, and the outer end of the lateral drill bit 3 is provided with a tip.

When in use, the propelling head 2 is fed, and the propelling head 2 is small in front and large in back, so that the lateral drill bit 3 is forced to extend out of the lateral hole; as the thrust head 2 and the outer sleeve 1 rotate, the lateral drilling head 3 rotates about the axis of the thrust head 2, thereby laterally slotting the vertical hole.

In an alternative of this embodiment, a plurality of lateral holes are provided, which are evenly distributed on the same circumference of the outer sleeve 1, and each lateral hole is penetrated by one lateral drill 3. When the lateral grooving is carried out, the lateral drill bits 3 which are uniformly distributed can effectively avoid eccentricity or tool chattering; the trembler is a process defect which cannot be avoided by the process methods such as boring. In a preferred version of this embodiment, as shown in fig. 2, two lateral bores are provided, both on the same circumference of the outer sleeve 1 and symmetrically distributed with respect to the axis of the outer sleeve 1, so that two lateral drills 3 are also provided, and two lateral drills 3 are also symmetrically distributed with respect to the axis of the outer sleeve 1.

In an alternative of this embodiment, as shown in fig. 3, the outer surface of the propelling head 2 is provided with a sliding groove 4, the sliding groove 4 is arranged along the front-rear direction, the number and the position of the sliding groove 4 correspond to those of the lateral holes, the inner end of the lateral drill 3 is located in the sliding groove 4, and the inner end of the lateral drill 3 abuts against the bottom of the sliding groove 4. Thus, when the propelling head 2 rotates, the lateral drill 3 can be driven to synchronously rotate, and the outer sleeve 1 is further driven to synchronously rotate; the slide groove 4 also enables the side bit 3 to slide more smoothly in the side hole. Thereby completing the lateral slotting. In another alternative of the embodiment, the outer surface of the propelling head 2 or the outer surface of the drill rod 8 is in key connection with the outer sleeve 1, so as to ensure that the outer sleeve 1 rotates synchronously with the propelling head 2; at this time, the push head 2 does not need to be provided with the sliding groove 4, so that the processing steps are reduced, and the sliding groove 4 can be also arranged, so that the lateral drill 3 can slide in the lateral hole more smoothly.

In an alternative of this embodiment, the lateral slotting drill further comprises a return spring 5, one end of the return spring 5 is fixed to the outer sleeve 1, one end of the return spring 5 is connected with the part of the lateral drill 3 located inside the outer sleeve 1, and the return spring 5 has an elastic force for moving the lateral drill 3 towards the axis of the outer sleeve 1. After the lateral grooving is finished, the lateral drill bit 3 needs to be retracted into the outer sleeve 1 at the moment to withdraw the tool; when the pushing head 2 is withdrawn, the inner end of the side bit 3 loses the abutting action force, and the side bit 3 automatically retracts into the outer sleeve 1 under the action of the return spring 5 so as to withdraw the tool. The return spring 5 can be an elastic sheet made of spring steel, as shown in fig. 3, a first end of the elastic sheet can be fixed on a partition plate in the outer sleeve 1, a through hole for the elastic sheet to pass through is formed in the partition plate, the elastic sheet is in interference fit with the through hole, a second end of the elastic sheet is fixed with the lateral drill 3, for example, the lateral drill 3 is provided with a clamping groove, a clamping jaw is arranged at the second end of the elastic sheet, the clamping jaw is clamped with the clamping groove, or the lateral drill 3 is also provided with a through hole, and the second end of the elastic sheet is in interference fit; as shown in fig. 4, the outer sleeve 1 may also be provided with a through hole, and the first end of the elastic piece is fixed to the through hole of the outer sleeve 1 in an interference fit manner.

In an alternative of this embodiment, the lateral slotting drill further comprises an adjustment seat 6, the adjustment seat 6 being telescopically and lockably fixed to the front end of the outer sleeve 1. For example, the adjustment seat 6 is screwed to the outer sleeve 1. When in use, the adjusting seat 6 is abutted against the bottom of the vertical hole; the length of the tool can be adjusted by rotating the adjusting seat 6 before use, so that the distance from the lateral drill bit 3 to the bottom of the vertical hole is adjusted, and the process requirements of lateral grooves with different depth requirements are met. Adjusting nut 7 is screwed outside adjusting seat 6, adjusting nut 7 is screwed reversely after the position of adjusting seat 6 is adjusted, adjusting seat 6 and outer sleeve 1 can be locked, and size of lateral groove is prevented from being influenced by rotation of adjusting seat 6.

In an alternative of this embodiment, the lateral slotting drill further includes a drill rod 8, a rear end of the drill rod 8 is used for receiving an electric drill and the like, the pushing head 2 is arranged at a front end of the drill rod 8, the drill rod 8 and the pushing head 2 can be integrally formed, and a part of the drill rod 8 close to the pushing head 2 is provided with a necking structure 9; as shown in fig. 5, the lateral slotting drill further includes a limiting cap 10 and an elastic collar 11, the limiting cap 10 is screwed on the rear end of the outer sleeve 1, a necking structure 9 is arranged on a portion, close to the pushing head 2, of the drill rod 8, the elastic collar 11 is sleeved on the necking structure 9, the elastic collar 11 is clamped between the limiting cap 10 and the outer sleeve 1, and the elastic collar 11 can slide along the necking structure 9. The arrangement does not influence the feeding of the propelling head 2; when it is desired to withdraw the tool, the end of the constriction 9 acts on the circlip 11 so that the outer sleeve 1 is withdrawn from the vertical bore as well.

The lateral slotting drill provided by the embodiment is divided into various types, corresponds to lateral grooves (sometimes also called as lateral holes) with different size requirements, and is generally used for opening the lateral holes in vertical holes with smaller diameters, so that the problem that the vertical holes with small diameters cannot be opened or the lateral holes cannot be opened easily is solved.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a side direction fluting drill, its characterized in that, includes the outer sleeve, advances head and side direction drill, advance the head set up in the outer sleeve, the outer sleeve is followed advance the head synchronous rotation, advance the head and can follow the axis direction of outer sleeve slides, advance the front end of head apart from the perpendicular distance of the axis of outer sleeve is less than advance the rear end of head apart from the perpendicular distance of the axis of outer sleeve, the outer sleeve is equipped with the side direction hole, the side direction drill set up in the side direction is downthehole, just the side direction drill can be followed the axis of side direction hole slides, the inner of side direction drill with advance the head and offset.

2. The lateral slotting drill bit according to claim 1, wherein the lateral holes are provided in a plurality, evenly distributed on the same circumference of the outer sleeve, one lateral drill bit passing through each lateral hole.

3. The lateral slotting drill bit according to claim 1 or 2, wherein the outer surface of the propelling head is provided with sliding grooves which are arranged along the front and rear direction, the sliding grooves correspond to the lateral holes in number and position, the inner ends of the lateral drill bits are positioned in the sliding grooves, and the inner ends of the lateral drill bits are abutted against the groove bottoms of the sliding grooves.

4. The lateral slotting drill according to claim 1, further comprising a return spring having one end fixed to the outer sleeve and one end connected to a portion of the lateral drill located within the outer sleeve, the return spring having a spring force that moves the lateral drill toward the outer sleeve axis.

5. The lateral slotting drill bit of claim 1, further comprising an adjustment seat telescopically and lockably secured to the front end of the outer sleeve.

6. The lateral slotting drill bit according to claim 5, wherein the adjustment seat is in threaded connection with the outer sleeve, an adjustment nut being screwed onto the adjustment seat.

7. The lateral slotting drill bit according to claim 1, further comprising a drill rod, the thrust head being disposed at a forward end of the drill rod.

8. The lateral slotting drill bit according to claim 7, further comprising a limiting cap screwed to the rear end of the outer sleeve, wherein a necking structure is arranged on a portion, close to the pushing head, of the drill rod, the elastic check ring is sleeved on the necking structure, the elastic check ring is clamped between the limiting cap and the outer sleeve, and the elastic check ring can slide along the necking structure.