CN213857257U

CN213857257U - Combined drill capable of adjusting hole depth

Info

Publication number: CN213857257U
Application number: CN202022934633.3U
Authority: CN
Inventors: 房景臣; 穆晗; 唐振; 王旭; 熊剑锋; 王金海; 韦军; 赵鹏; 吴言
Original assignee: Tianjin Rongheng Technology Co ltd; Beijing Aerospace Hi Tech New Materials Co ltd Tianjin Branch
Current assignee: Tianjin Rongheng Technology Co ltd; Beijing Aerospace Hi Tech New Materials Co ltd Tianjin Branch
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-03
Anticipated expiration: 2030-12-10

Abstract

The utility model provides a deep combination of adjustable hole bores, including the counter bit body and drill bit, the counter bit body is a cylinder, counter bit body one end sets up the cutting edge of counter bit, the counter bit body prolongs the central axis and sets up the through-hole, drill bit one end sets up the cutting edge, and the lateral wall that cutting edge one end was kept away from to the drill bit sets up tight definite groove, the counter bit body is close to cutting edge one end lateral wall and prolongs the axis and set up two tight definite holes, tight definite hole is the screw hole, tight definite groove width more than or equal to tight diameter in definite hole, the tight definite groove one end of drill bit is pegged graft with counter bit body center through-hole. The beneficial effects of the utility model are that adjustable drilling depth, the drill bit is conveniently changed.

Description

Combined drill capable of adjusting hole depth

Technical Field

The utility model belongs to the field of machinery, especially, relate to a combination of adjustable hole depth is bored.

Background

Present ordinary integral type drill bit, the hole depth of a specification can only be bored, if the shaping hole depth of isostructure is inconsistent, the cutter needs to make again, has increaseed manufacturing cost to the handling capacity of drill bit is big, and the life-span of drill bit is short, and the cutting output of counter boring position is little but the life-span is longer, and the integral type cutter can lead to tool bit and counter boring position life-span inconsistent, can lead to the counter boring position also to use for the life-span tool bit of drill bit, causes the cutter extravagant.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a split type design, can adjust the deep combination of adjustable hole of drill bit length are bored, are particularly suitable for drilling and counter sinking work.

The technical scheme of the utility model is that: the utility model provides a deep combination of adjustable hole bores, includes the counter bit body and drill bit, the counter bit body is a cylinder, counter bit body one end sets up the cutting edge of counter bit, the counter bit body prolongs the central axis and sets up the through-hole, drill bit one end sets up the cutting edge, and the lateral wall that cutting edge one end was kept away from to the drill bit sets up tight definite groove, the counter bit body is close to cutting edge one end lateral wall and prolongs the axis and set up two tight definite holes, tight definite hole is the screw hole, tight definite groove width more than or equal to tight diameter in definite hole, the tight definite groove one end of drill bit is pegged graft with counter bit body center through-hole.

Furthermore, the cutting edge part of the countersink body is made of PCD materials, and the part except the cutting edge of the countersink body is made of 9 CrSi.

Furthermore, the blade part of the drill is made of PCD materials, and the part of the drill except the blade part is made of K10 hard alloy.

Further, the size of the fastening hole is M5.

Furthermore, the matching precision of the counter bit body central through hole and the drill bit is H7/H6.

The utility model has the advantages and positive effects that:

1. because the counter bit body and the drill bit are arranged in a separated mode, the problem that the drill bit is abraded and larger than the counter bit body can be avoided, when the drill bit is abraded too much, the drill bit can be directly taken down and replaced with a new drill bit, integrated processing and use can be achieved, the counter bit body and the drill bit can be separated, different abrasion parts are distinguished and replaced, the specification of a cutter is reduced, and waste of the cutter is avoided.

2. Due to the fact that the through hole, the fastening hole and the fastening groove are matched, the installation length of the drill bit can be adjusted conveniently, the drill bit with one caliber can process holes with different depths by adjusting the installation length of the drill bit, the number of required tools is reduced, the specification of the tools is reduced, and the waste of the tools is reduced.

Drawings

FIG. 1 is an assembly view of the present invention;

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

fig. 3 is a schematic view of the drill of the present invention.

In the figure:

1. countersink drill 2, drill 3, and fastening hole

4. Fastening groove

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3:

the utility model provides a combination drill of adjustable hole depth, includes counter bit body 1 and drill bit 2, its characterized in that: the body 1 is a cylinder to the ream, 1 one end of the body sets up the cutting edge of ream, 1 of the body of ream prolongs the central axis and sets up the through-hole, 2 one ends of drill bit set up the cutting edge, and the lateral wall that cutting edge one end was kept away from to drill bit 2 sets up tight fixed slot 4, 1 of the body of ream is close to cutting edge one end lateral wall and prolongs the axis and set up two tight fixed holes 3, tight fixed hole 3 is the screw hole, tight fixed slot 4 width more than or equal to tight fixed hole 3's diameter, 4 one end of tight fixed slot of drill bit 2 is pegged graft with 1 central through-hole of the body of ream.

The cutting edge of the countersink drill body 1 is made of PCD materials, and the part outside the cutting edge of the countersink drill body 1 is made of 9 CrSi.

The blade part of the drill bit 2 is made of PCD materials, and the part outside the blade part of the drill bit 2 is made of K10 hard alloy.

The size of the fastening hole 3 is M5.

The matching precision of the center through hole of the countersink drill body 1 and the drill bit 2 is H7/H6.

The working process of the example is as follows:

during the use, the hole depth of processing as required, the depth of insertion of adjustment drill bit 2 in the counter bit body 1, then through the screw, tight set hole 3 locks with tight set groove 4, later just can carry out drilling work, when the hole of the same bore of the different degree of depth of needs processing, the cutter that also need not renew yet, only need loosen the screw, then the extension length of adjustment drill bit 2, lock again, just can process the hole of the different degree of depth, the effectual specification and the quantity that has reduced the cutter, resources and cost have been practiced thrift, the life-span of drill bit 2 and the tool bit life-span of the counter bit body 1 are different great simultaneously, through split type design, can change drill bit 2 alone, avoided leading to whole cutter to scrap because of drill bit 2 life-span, the replacement cost of cutter has been reduced.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides an adjustable hole depth's combination bores, includes counter bit body (1) and drill bit (2), its characterized in that: the countersink drill body (1) is a cylinder, the countersink drill body (1) one end sets up the cutting edge of countersink drill, countersink drill body (1) is prolonged central axis and is set up the through-hole, drill bit (2) one end sets up the cutting edge, and the lateral wall that cutting edge one end was kept away from in drill bit (2) sets up tight definite groove (4), countersink drill body (1) is close to cutting edge one end lateral wall and prolongs the axis and set up two tight definite holes (3), tight definite hole (3) are the screw hole, tight definite groove (4) width more than or equal to the diameter in tight definite hole (3), the tight definite groove (4) one end of drill bit (2) is pegged graft with countersink drill body (1) central through-hole.

2. The combination drill of claim 1, wherein: the cutting edge of the countersink drill body (1) is made of PCD materials, and the part outside the cutting edge of the countersink drill body (1) is made of 9 CrSi.

3. The combination drill of claim 1, wherein: the blade part of the drill bit (2) is made of PCD materials, and the part outside the blade part of the drill bit (2) is made of K10 hard alloy.

4. The combination drill of claim 1, wherein: the size of the fastening hole (3) is M5.

5. The combination drill of claim 1, wherein: the matching precision of the center through hole of the countersink drill body (1) and the drill bit (2) is H7/H6.