CN216461978U

CN216461978U - Combined stepped drill capable of improving chip removal capacity and durability of drill bit

Info

Publication number: CN216461978U
Application number: CN202123118275.XU
Authority: CN
Inventors: 岳壮豪; 岳八金
Original assignee: Zhenjiang Huaxing Special Tool Manufacturing Co ltd
Current assignee: Zhenjiang Huaxing Special Tool Manufacturing Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-10
Anticipated expiration: 2031-12-13

Abstract

The utility model relates to the technical field of step drills, and discloses a combined type step drill which can improve the chip removal capability and the durability of a drill bit; the combined stepped drill capable of improving the chip removal capacity and the durability of the drill bit comprises a stepped drill body and a connecting drill handle, wherein the connecting drill handle is positioned at the bottom of the stepped drill body, a blind hole is vertically formed in the top of the stepped drill body, the cross section of the blind hole is hexagonal, a twist drill bit is arranged in the blind hole, a hexagonal mounting rod matched with the blind hole is arranged at the bottom of the twist drill bit, first chip removal grooves which are uniformly distributed are formed in the surface of the stepped drill body, and annular grooves which are uniformly distributed are formed in the surface of the stepped drill body; set up through-hole, spliced pole, threaded rod, connecting block, slider, clamp splice and change the handle, be convenient for change ladder drill or twist drill respectively alone after ladder drill or twist drill receive wearing and tearing, need not overall change, resources are saved, convenient to detach.

Description

Combined stepped drill capable of improving chip removal capacity and durability of drill bit

Technical Field

The utility model belongs to the technical field of the ladder bores, specifically be a modular ladder bores that can improve drill bit chip removal ability and durability.

Background

The step drill is also called a step drill or a pagoda drill, and is mainly used for drilling and processing thin steel plates within 3mm, one drill can replace a plurality of drills to process holes with different diameters as required, and large holes can be processed at one time without replacing the drill, drilling positioning holes and the like.

Most of the conventional step drills are of an integrated structure, and when the step drill is used, the top end of the step drill is firstly contacted with a material, so that the top end of the step drill is most easily abraded; therefore, improvements are now needed in view of the current situation.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a modular ladder that can improve drill bit chip removal ability and durability bores, the effectual current ladder of having solved bores the most formula structure as an organic whole, and the ladder bores in the use, and the top at first can contact with the material, bores the top and most easily causes wearing and tearing to the ladder, bores the top when the ladder and causes the wearing and tearing after, often can only bore whole the changing to the ladder, causes the problem of wasting of resources.

In order to achieve the above object, the utility model provides a following technical scheme: a combined ladder drill capable of improving chip removal capacity and durability of a drill bit comprises a ladder drill body and a connecting drill handle, wherein the connecting drill handle is positioned at the bottom of the ladder drill body, the top of the ladder drill body is vertically provided with a blind hole, the cross section of the blind hole is hexagonal, a twist drill bit is arranged in the blind hole, the bottom of the twist drill bit is provided with a hexagonal installation rod matched with the blind hole, the surface of the ladder drill body is provided with first chip discharge grooves which are uniformly distributed, the surface of the ladder drill body is provided with annular grooves which are uniformly distributed, each annular groove comprises a table top with the same excircle diameter and a reaming cutting edge with the excircle diameter gradually increased from top to bottom, each reaming cutting edge is of an arc shape or a broken line shape, the left side and the right side of the ladder drill body are both provided with through holes, and the inner cavities of the through holes are both provided with connecting columns, threaded rods are arranged in the inner cavities of the two connecting columns, connecting blocks are arranged on the opposite sides of the two threaded rods, sliding blocks are arranged at the upper end and the lower end of each connecting block, and clamping blocks are arranged on the opposite sides of the two connecting blocks.

Preferably, the surface of the twist drill is provided with a second chip groove, and the stepped drill body and the connecting drill handle are both made of SKH-95 type high-speed steel.

Preferably, the outer wall of the twist drill body corresponding to the through hole is uniformly and annularly provided with fixing grooves matched with the clamping blocks by taking the central axis as the center of a circle, and the twist drill is made of SKH-95 type high-speed steel.

Preferably, the opposite sides of the two threaded rods are provided with rotating handles which are hexagon socket head bolts, the diameters of the rotating handles are matched with the diameters of the through holes, and rubber pads are arranged on the opposite sides of the two clamping blocks.

Preferably, the upper end and the lower end of the inner cavity of the connecting column are both provided with sliding grooves, and the sliding blocks are located inside the sliding grooves.

Preferably, the opposite sides of the two connecting columns are provided with grooves, and the clamping blocks penetrate through the grooves.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the through hole, the connecting column, the threaded rod, the connecting block, the sliding block, the clamping block and the rotating handle are arranged, so that the stepped drill or the twist drill can be conveniently and independently replaced after being worn, the integral replacement is not needed, the resource is saved, the cost is reduced, the disassembly is convenient, the twist drill can be conveniently clamped and fixed, and the looseness generated in the use process is prevented;

2. the first chip removal groove and the annular groove are arranged, the reaming cutting edge is arranged to be in an arc shape or a broken line shape, impact caused by sudden reaming and cutting is effectively borne, the strength of the part is greatly enhanced, meanwhile, the corresponding fragile cutting edge outer part can be protected by the blunt second section of broken line, the cutting path can be differentiated to reduce vibration, chip rolling and removal are facilitated, one of fillet transition or broken line transition is arranged between adjacent grooves of the annular groove, and the chip removal capacity of the stepped drill body is further enhanced and improved;

3. the stepped drill body and the connecting drill handle are made of hard alloy, and the hard alloy has high hardness, wear resistance, good strength and toughness, heat resistance and corrosion resistance, so that the durability and the durability of the stepped drill body are improved, and the service life of the stepped drill body is prolonged;

drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is an enlarged schematic view of part A of the present invention;

FIG. 4 is a schematic view of the arc-shaped cutting edge of the present invention;

fig. 5 is a schematic view of the broken line type cutting edge structure of the present invention.

In the figure: 100. a step drill body; 101. a first chip discharge groove; 102. an annular groove; 103. a twist drill; 1031. a second chip groove; 104. connecting a drill handle; 105. a through hole; 106. connecting columns; 107. a threaded rod; 108. connecting blocks; 109. a slider; 110. a clamping block; 111. and (4) turning the handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Embodiment one, given by fig. 1, fig. 2 and fig. 3, the utility model discloses a combined ladder drill capable of improving chip removal capability and durability of a drill bit, comprising a ladder drill body 100 and a connecting drill handle 104, wherein the connecting drill handle 104 is positioned at the bottom of the ladder drill body 100, a blind hole is vertically formed at the top of the ladder drill body 100, the cross section of the blind hole is hexagonal, a twist drill 103 is arranged in the blind hole, a hexagonal mounting rod matched with the blind hole is arranged at the bottom of the twist drill 103, first chip removal grooves 101 are uniformly distributed on the surface of the ladder drill body 100, annular grooves 102 are uniformly distributed on the surface of the ladder drill body 100, through holes 105 are formed at the left side and the right side of the ladder drill body 100, connecting columns 106 are arranged in the inner cavities of the through holes 105, threaded rods 107 are arranged in the inner cavities of the two connecting columns 106, connecting blocks 108 are arranged at opposite sides of the two threaded rods 107, sliders 109 are arranged at the upper end and the lower end of the two connecting blocks 108, the opposite side of two connecting blocks 108 all is provided with clamp splice 110, ladder drill body 100 surface sets up evenly distributed's first chip groove 101 and annular groove 102 is convenient for increase ladder drill body 100's chip removal ability in the use, put into the vertical blind hole of seting up in ladder drill body 100 top with fluted drill 103, at this moment, rotate two and change 111, it moves 111 to rotate and drive threaded rod 107, threaded rod 107 removes and promotes connecting block 108 and drive two sliders 109 and remove in the spout, thereby drive clamp splice 110 and remove, thereby it is fixed to press from both sides the clamp to fluted drill 103, the convenience is dismantled and is changed fluted drill 103 and ladder drill body 100, reduce the wasting of resources.

In the second embodiment, as shown in fig. 1 and 4, the second chip removal groove 1031 is formed in the surface of the twist drill 103, the reaming cutting edge is arranged to be arc-shaped, so that impact caused by sudden reaming and cutting is effectively borne, the strength of the part is greatly enhanced, the service life of the stepped drill body 100 is prolonged, meanwhile, the arc-shaped cutting edge can be divided into cutting paths to reduce vibration and is very beneficial to chip coiling and removal, the stepped drill body 100 and the connecting drill shank 104 are both made of SKH-95 type high-speed steel, the durability of the stepped drill body 100 is enhanced, and the service life is prolonged.

In the third embodiment, as shown in fig. 2, 3 and 5, the outer wall of the body of the twist drill 103 corresponding to the through hole 105 is uniformly and annularly provided with a fixing groove matched with the clamping block 110 by taking the central axis as the center of a circle, the twist drill 103 is made of SKH-95 type high-speed steel, the high-speed steel is tool steel with high hardness, high wear resistance and high heat resistance, the service life of the twist drill 103 is prolonged conveniently, abrasion is reduced, the reaming cutting edge is arranged to be a broken line type, the outer part of the corresponding fragile cutting edge is protected by a blunt second broken line, the service life is effectively prolonged, and meanwhile, the segmented cutting edge can be divided into a cutting path to reduce vibration, thereby facilitating chip rolling and removal.

In a fourth embodiment, as shown in fig. 2 and 3, the opposite sides of the two threaded rods 107 are provided with rotating handles 111, the rotating handles 111 are hexagon socket bolts, the diameter of the rotating handles 111 matches with the diameter of the through holes 105, and rubber pads are arranged on the opposite sides of the two clamping blocks 110, so as to prevent the clamping blocks 110 from wearing the surface of the twist drill 103.

In the fifth embodiment, as shown in fig. 3, the upper and lower ends of the inner cavity of the connecting column 106 are both provided with sliding grooves, the sliding blocks 109 are both located inside the sliding grooves, and the upper and lower ends of the inner cavity of the connecting column 106 are both provided with sliding grooves, so that the sliding blocks 109 drive the connecting block 108 to move.

In a sixth embodiment, as shown in fig. 3, the opposite sides of the two connecting columns 106 are both provided with grooves, the clamping blocks 110 all penetrate through the grooves, and the opposite sides of the two connecting columns 106 are both provided with grooves, so that the clamping blocks 110 can be extended out or collected conveniently.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a modular can improve ladder of drill bit chip removal ability and durability bores, includes ladder drill body (100) and connection drillstock (104), its characterized in that: the connecting drill handle (104) is positioned at the bottom of the stepped drill body (100), a blind hole is vertically formed in the top of the stepped drill body (100), the cross section of the blind hole is hexagonal, a twist drill (103) is arranged in the blind hole, a hexagonal mounting rod matched with the blind hole is arranged at the bottom of the twist drill (103), a first chip removal groove (101) which is uniformly distributed is formed in the surface of the stepped drill body (100), annular grooves (102) which are uniformly distributed are formed in the surface of the stepped drill body (100), each annular groove (102) comprises a table top with an unchanged excircle diameter and a reaming cutting edge with the excircle diameter gradually increased from top to bottom, each reaming cutting edge is of an arc shape or a broken line shape, through holes (105) are formed in the left side and the right side of the stepped drill body (100), and connecting columns (106) are arranged in inner cavities of the through holes (105), threaded rods (107) are arranged in inner cavities of the two connecting columns (106), connecting blocks (108) are arranged on opposite sides of the two threaded rods (107), sliding blocks (109) are arranged at the upper end and the lower end of each connecting block (108), and clamping blocks (110) are arranged on opposite sides of the two connecting blocks (108).

2. The combination type stepped drill capable of improving the chip removal capability and the durability of the drill bit according to claim 1, wherein: the surface of the twist drill bit (103) is provided with a second chip discharge groove (1031), and the stepped drill body (100) and the connecting drill handle (104) are both made of SKH-95 type high-speed steel.

3. The combination type stepped drill capable of improving the chip removal capability and the durability of the drill bit according to claim 1, wherein: the outer wall of the twist drill (103) body corresponding to the through hole (105) is uniformly and annularly provided with a fixing groove matched with the clamping block (110) by taking the central axis as the center of a circle, and the twist drill (103) is made of SKH-95 type high-speed steel.

4. The combination type stepped drill capable of improving the chip removal capability and the durability of the drill bit according to claim 1, wherein: the reverse sides of the two threaded rods (107) are provided with rotating handles (111), the rotating handles (111) are inner hexagonal bolts, the diameters of the rotating handles (111) are matched with the diameters of the through holes (105), and rubber pads are arranged on the opposite sides of the two clamping blocks (110).

5. The combination type stepped drill capable of improving the chip removal capability and the durability of the drill bit according to claim 1, wherein: the upper end and the lower end of the inner cavity of the connecting column (106) are both provided with sliding grooves, and the sliding blocks (109) are both positioned inside the sliding grooves.

6. The combination type stepped drill capable of improving the chip removal capability and the durability of the drill bit according to claim 1, wherein: the opposite sides of the two connecting columns (106) are provided with grooves, and the clamping blocks (110) penetrate through the grooves.