CN218694169U

CN218694169U - Drilling positioning sleeve for drill bit

Info

Publication number: CN218694169U
Application number: CN202222916735.1U
Authority: CN
Inventors: 魏龙峰; 益胜光; 张爱峰; 马天峰; 刘清峰; 刘亮亮
Original assignee: Shandong Xinmeida Technology Material Co ltd
Current assignee: Shandong Xinmeida Technology Material Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-03-24
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a drilling position sleeve for drill bit, its characterized in that: the device comprises a cylinder, a large disc and a small disc which are positioned at two ends of the cylinder, wherein the central holes of the large disc and the small disc are communicated and are coaxially arranged; the small disc is provided with two radial threaded holes communicated with the central hole and used for screwing in a screw to prop against the drill bit so as to fix the drilling positioning sleeve on the drill bit; the end of the cylinder close to the large disc is provided with two grooves, namely chip grooves, and the grooves are communicated with the central hole of the cylinder. The beneficial effects of the utility model are that, have (drilling depth) locate function, ensure to use drill bit processing not out of tolerance. Notches are formed in two sides of the drill sleeve and used for filling cutting fluid and removing chips. Under the condition of ensuring the necessary strength, the notch is opened as much as possible, so that the injection and chip removal effects of the cutting fluid can be improved. The two structures can ensure that the hole opening of the deep drilling hole is not out of tolerance, the qualification rate reaches 100 percent, and the production requirement is met.

Description

Drilling positioning sleeve for drill bit

Technical Field

The invention relates to the technical field of electric drills and drilling machines in machining, in particular to a drilling positioning sleeve for a drill bit.

Background

In the machining process, the situation that deep holes are drilled by using a twist drill on a common lathe is often met, and the drilled holes are often subjected to orifice out-of-tolerance. This is due to the drill bit being withdrawn multiple times during drilling, the chips being conducted away, and the drill bit's leading margin rubbing against the hole. And the drilling depth is too large or too small, which does not meet the processing requirements.

This may be acceptable if the hole accuracy requirements are not high, but the accuracy requirements for the hole are high or the orifice diameter is required to be out of tolerance when the orifice is threaded.

Disclosure of Invention

The utility model discloses a remedy prior art not enough, provide a drilling position sleeve for drill bit of simple structure, convenient to use.

The utility model discloses a realize through following technical scheme:

the utility model discloses a drilling position sleeve for drill bit, its characterized in that: the device comprises a cylinder, a large disc and a small disc which are positioned at two ends of the cylinder, wherein the central holes of the large disc and the small disc are communicated and are coaxially arranged; the small disc is provided with two radial threaded holes communicated with the central hole and used for screwing in a screw to prop against the drill bit so as to fix the drilling positioning sleeve on the drill bit; the end of the cylinder close to the large disc is provided with two grooves, namely chip grooves, and the grooves are communicated with the central hole of the cylinder.

The cylinder, the large disk and the small disk are integrally manufactured or the three are welded together.

The two grooves of the cylinder are oppositely arranged; the drill bit is cooled by conveniently discharging machining chips and adding cooling liquid.

The central hole of the small disc is the same as that of the cylinder, so that a drill bit can be smoothly sleeved on the small disc; two threaded holes of the small disc are oppositely arranged, so that the small disc can be conveniently fixed on a drill bit by a screw.

The large disc is provided with a positioning conical hole, the inlet of the positioning conical hole is large, the inner part of the positioning conical hole is small, the small end of the positioning conical hole is butted with the central hole of the cylinder and is positioned on the same axis, and the diameter of the small end of the positioning conical hole is the same as that of the central hole of the cylinder; the inlet of the positioning conical hole is convenient for processing chips to smoothly enter and then be discharged from a chip discharge groove of the cylinder, and the small end of the positioning conical hole has the same diameter as the central hole of the cylinder, so that a drill bit can be smoothly sleeved on the positioning conical hole, and the processing chips can be smoothly discharged.

The centre holes of the cylinder, the large disc and the small disc are the twist drill placing holes.

The beneficial effects of the utility model are that, have (drilling depth) locate function, ensure to use the drill bit processing not overproof. Notches are formed in two sides of the drill sleeve and used for filling cutting fluid and removing chips. Under the condition of ensuring the necessary strength, the notch is opened as much as possible, so that the injection and chip removal effects of the cutting fluid can be improved. The two structures can ensure that the hole opening of the deep hole is not out of tolerance, the qualification rate reaches 100 percent, and the production requirement is met.

Drawings

Fig. 1, 2, and 3 are a front view, a top view, and a left view of the present invention in sequence. Fig. 4 is a schematic use diagram of fig. 1. Fig. 5 is a schematic use diagram of fig. 2.

In the figure: the device comprises a cylinder 1, a large circular disc 2, a small circular disc 3, a threaded hole 4, a central hole 5, a positioning conical hole 6, a chip groove 7, a drill bit 8 and a screw 9.

Detailed Description

The attached drawing is a concrete embodiment of the utility model.

The utility model discloses a drill positioning sleeve for a drill, which comprises a cylinder 1, a large disk 2 and a small disk 3 which are positioned at two ends of the cylinder, and the central holes 5 of the large disk and the small disk are communicated and coaxially arranged; the small disc is provided with 2-4 radial threaded holes 4 communicated with the central hole and used for screwing a screw 9 to prop against the drill bit so as to fix the drilling positioning sleeve on the drill bit; one end of the cylinder close to the large disc is provided with 2-3 grooves, namely chip grooves 7, and the grooves are communicated with the central hole of the cylinder.

The two chip grooves 7 of the cylinder 1 are oppositely arranged; the drill bit is convenient to discharge machining chips (scrap iron or wood chips) and add cooling liquid.

The central hole of the small disc 3 is the same as the central hole of the cylinder in size, so that a drill bit can be conveniently and smoothly sleeved; two threaded holes of the small disc are oppositely arranged, so that the small disc can be conveniently fixed on a drill bit by a screw.

The large disc is provided with a positioning conical hole 6, the inlet of the positioning conical hole is large, the inner part of the positioning conical hole is small, the small end of the positioning conical hole is butted with the central hole of the cylinder and is positioned on the same axis, and the diameter of the small end of the positioning conical hole is the same as that of the central hole of the cylinder; the inlet of the positioning conical hole is convenient for processing chips to smoothly enter and then be discharged from the chip discharge groove of the cylinder, and the small end of the positioning conical hole has the same diameter as the central hole of the cylinder, so that a drill bit can be smoothly sleeved on the positioning conical hole, and the processing chips can be smoothly discharged.

The threaded hole of the small disc adopts an M5 threaded hole.

The utility model discloses, hollow drill bushing is as location drill bit device, and two screw holes of symmetrical arrangement can use the screw to withstand the drill bit on the drill bushing to fix the drilling position sleeve required highly keeping location on the drill bit according to drilling depth, be used for ensuring required drilling depth. The drilling positioning sleeve is fixed on the drill bit and rotates along with the drill bit. The two sides of the drill sleeve are provided with chip removal holes, so that the machining scrap iron can be discharged, and meanwhile, cooling liquid is added to cool the drill bit, and the drill bit is prevented from being damaged due to overheating. The distance between the end face of the large disc of the drilling positioning sleeve and the drill bit is large due to the fact that the hole needs to be drilled deeply, so that the drilling depth is accurately controlled, and the situation that the drilling hole is too deep and too shallow is avoided.

The bit is inserted from B to A, the drill handle is at the B end, and the drill point is at the A end.

Claims

1. The utility model provides a drill bit is with drilling position sleeve which characterized in that: the device comprises a cylinder, a large disc and a small disc which are positioned at two ends of the cylinder, wherein the central holes of the large disc and the small disc are communicated and are coaxially arranged; the small disc is provided with two radial threaded holes communicated with the central hole and used for screwing in a screw to prop against the drill bit so as to fix the drilling positioning sleeve on the drill bit; the end of the cylinder close to the large disc is provided with two grooves, namely chip grooves, and the grooves are communicated with the central hole of the cylinder.

2. The drill bit positioning sleeve according to claim 1, wherein: the cylinder, the large disk and the small disk are integrally manufactured or the three are welded together.

3. The drill positioning sleeve for a drill according to claim 1 or 2, wherein: the two grooves of the cylinder are oppositely arranged; the drill bit is cooled by conveniently discharging machining chips and adding cooling liquid.

4. The drill positioning sleeve for a drill according to claim 1 or 2, wherein: the central hole of the small disc is the same as that of the cylinder, so that a drill bit can be smoothly sleeved on the small disc; two threaded holes of the small disc are oppositely arranged, so that the small disc can be conveniently fixed on a drill bit by a screw.

5. The drill positioning sleeve for a drill according to claim 1 or 2, wherein: the large disc is provided with a positioning conical hole, the inlet of the positioning conical hole is large, the inner part of the positioning conical hole is small, the small end of the positioning conical hole is butted with the central hole of the cylinder and is positioned on the same axis, and the diameter of the small end of the positioning conical hole is the same as that of the central hole of the cylinder; the inlet of the positioning conical hole is convenient for processing chips to smoothly enter and then be discharged from a chip discharge groove of the cylinder, and the small end of the positioning conical hole has the same diameter as the central hole of the cylinder, so that a drill bit can be smoothly sleeved on the positioning conical hole, and the processing chips can be smoothly discharged.