CN218946932U

CN218946932U - Machining tool apron suitable for BTA deep hole drilling and boring machine

Info

Publication number: CN218946932U
Application number: CN202223030959.9U
Authority: CN
Inventors: 黄英; 姜程; 贺冰; 张莉; 舒许梅
Original assignee: Hunan Vanguard Group Co ltd
Current assignee: Hunan Vanguard Group Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-05-02
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a processing tool apron suitable for a BTA deep hole drilling and boring machine, which comprises a connecting part, a guiding part and a central hole arranged in the central shaft of the connecting part and the guiding part; the center hole of the part of the guide part near the front end is a Morse taper center hole, and the guide part is connected with the taper shank cutter through the Morse taper center hole; the connecting part is externally provided with threads and is connected with a BAT deep hole drilling and boring machine drill rod through the threads; the central holes of the connecting part and the guide part are communicated with a chip removal pipeline on a drill rod of the BAT deep hole drilling and boring machine; the utility model has the advantages that the deep blind holes between SR5 and SR48 can be processed on the BAT deep hole drilling boring machine, compared with the special BAT deep hole ball head drill, the drill bit and the milling cutter can be matched for use, the straight shank and the taper shank can be switched for use, the assembly and the disassembly are flexible and convenient, the cutter is not required to be customized, and the cost is effectively reduced. The processed product completely meets the quality requirement of processing the deep blind holes in the appearance of the football bottom.

Description

Machining tool apron suitable for BTA deep hole drilling and boring machine

Technical Field

The utility model relates to the technical field of initiating explosive device assembly, in particular to a machining tool apron suitable for a BTA deep hole drilling and boring machine.

Background

The deep blind hole processing of high-strength steel materials (the hardness of the materials is more than 55) is frequently encountered in the mechanical processing of the military industry, and the current mechanical processing mode of the deep blind hole ball bottom processing (the appearance is shown in figure 1) of the warhead elastomer mainly comprises deep hole ball head forming drilling, profiling turning and the like. The deep hole ball head forming drill bit used on the deep hole jet sucking drilling boring machine is a sizing cutter with a blade embedded fixing structure, is generally manufactured in a non-calibrated mode, is high in cutter manufacturing cost and long in manufacturing period, and is suitable for production of batch products.

However, the external diameter of the deep hole ball head forming drill bit is generally larger than the diameter of a drill rod of the deep hole jet-suction drilling machine, and is limited by the diameter of the drill rod used by the deep hole jet-suction drilling machine, and when the drilling size is smaller than the diameter of the drill rod, the small-size deep hole ball head forming drill bit of the type is not easy to manufacture. Therefore, the deep hole jet suction drilling boring machine is not easy to drill deep blind holes in small size;

if profiling turning is adopted, a central process hole is required to be drilled at the bottom of the ball, and then the ball is turned out layer by layer, because the material strength and the hardness are high, the turning tool rod is hung and stretched, the cutting amount is small, and the efficiency of the layer-by-layer profiling turning is low.

Therefore, in the stage of product trial manufacture, the shape and the size of the elastomer are not solidified, and the size of the bottom of the elastomer is also changed frequently, so that the two schemes have defects in processing the bottom of the ball when processing the inner holes of the bottom of the deep blind holes of SR 5-SR 48.

Disclosure of Invention

The utility model aims to solve the defects and the shortcomings in the prior art, and provides the processing tool apron which is simple in structure, convenient to use, capable of guaranteeing free replacement of a deep hole jet drilling and boring machine and capable of drilling a small-size deep blind hole ball bottom between SR5 and SR48 and is suitable for a BTA deep hole drilling and boring machine.

The technical scheme of the utility model is as follows: a processing tool apron suitable for a BTA deep hole drilling and boring machine comprises a connecting part, a guiding part and a central hole arranged in a central shaft of the connecting part and the guiding part; the center hole of the part of the guide part near the front end is a Morse taper center hole, and the guide part is connected with the taper shank cutter through the Morse taper center hole;

the connecting part is externally provided with threads and is connected with a BAT deep hole drilling and boring machine drill rod through the threads;

the central holes of the connecting part and the guide part are communicated with a chip removal channel on a drill rod of the BAT deep hole drilling and boring machine;

the outer circumference of the guide part is also provided with a chip removal groove, a guide key installation groove and a set screw installation hole; a chip removal hole is also formed in the chip removal groove and communicated with the central hole of the guide part and used for chip removal and oil discharge; the set screw mounting hole is communicated with the Morse taper center hole and is used for holding a taper shank cutter.

The improved Morse taper shank comprises a Morse taper shank reducing sleeve, a Morse taper shank side fixing cutter handle, a straight shank cutter, a taper shank cutter and a side fixing cutter, wherein the Morse taper shank reducing sleeve and the Morse taper shank side fixing cutter handle are used for switching and mounting the straight shank cutter, the taper shank cutter and the side fixing cutter; the outside of Morse taper shank reducing sleeve is matched with the inside of the Morse taper center hole on the guide part, and the inside of Morse taper shank reducing sleeve is matched with the outside of the Morse taper shank side fixing cutter handle.

Further, the outer circumference of the guide part is also provided with an oil injection groove.

Further, a wrench groove is further formed in the guide portion, close to the connecting portion.

Furthermore, the guide key mounting groove is internally provided with a compression screw mounting hole, and the guide key is fixedly mounted in the guide key mounting groove through the compression screw.

Furthermore, two ends of the connecting part are also provided with positioning spigot which is coaxial with the central hole and the Morse taper central hole.

Further, the cutter is any one of a twist drill, a u-drill, a ball reamer and a ball end mill.

Compared with the prior art, the utility model has the beneficial effects that:

by sleeving the common cutter on the BAT deep hole drilling and boring machine, the deep blind holes between SR5 and SR48 can be processed, compared with a special BAT deep hole ball head drill, the drill bit and the milling cutter can be matched for use, the straight shank and the taper shank can be switched for use, the assembly and the disassembly are flexible and convenient, the cutter does not need to be customized, and the cost is effectively reduced. Meanwhile, after the guide key is arranged on the outer cylindrical surface, the coaxiality of the spherical bottom shape and the deep hole is ensured, the oil feeding groove, the chip discharging groove and the chip discharging hole can ensure the oiling and chip discharging functions during processing on a BAT deep hole drilling machine, and in order to strengthen Morse taper self-locking, a set screw is also arranged on the tool apron, and the flat tongue of the taper shank tool can be propped against the set screw to prevent rotation; the connecting screw thread is connected with a BAT deep hole drilling and boring machine drill rod, is consistent with the use and connection of a special BAT deep hole drilling and boring machine drill bit, and completely meets the quality requirements of deep blind hole processing in the appearance of the football bottom.

Drawings

Fig. 1 is a schematic diagram of a deep blind hole ball bottom structure of a warhead in the prior art.

FIG. 2 is a schematic diagram of the structure of the present utility model.

Fig. 3 is a cross-sectional view of the present utility model.

Fig. 4 is a schematic view of the structure of the twist drill with the direct-mounted taper shank.

Fig. 5 is a schematic structural view of the ball end mill with the directly installed taper shank according to the present utility model.

Fig. 6 is a schematic diagram of a U-shaped drill with a straight shank installed on a side fixed shank of the Morse taper shank.

Fig. 7 is a schematic structural view of a straight shank ball end milling cutter with a sleeved Morse taper shank side fixed cutter handle.

Fig. 8 is a schematic diagram of the structure of the twist drill with the sleeved Morse reducer sleeve and the conical shank.

Fig. 9 is a schematic diagram of a structure of the U-shaped drill with the Morse reducer sleeved and Morse shank side cutter shank installed.

Fig. 10 is a schematic diagram of a structure of a straight shank ball end mill for mounting a side cutter handle of a Morse reducer sleeve and Morse shank in the utility model.

Reference numerals: 1-SR ball bottom, 2-oil injection groove, 3-compression screw mounting hole, 4-guide key mounting groove, 5-chip groove, 6-set screw mounting hole, 7-hook spanner groove, 8-positioning spigot, 9-connecting screw thread, 10-Morse taper center hole, 11-chip removal hole, 12-center hole, 13, morse taper reducing sleeve, 14, morse taper shank side fixed handle, 15-guide key, 16, compression screw, 17-set screw, 18-taper shank twist drill, 19-taper shank ball end milling cutter, 20-Morse taper shank side fixed handle, 21-straight shank U drill, 22-straight shank ball milling cutter.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings, without limiting the scope of the utility model.

The embodiment of the utility model comprises the following steps:

a processing tool apron suitable for a BTA deep hole drilling and boring machine comprises a connecting part, a guiding part and a central hole arranged in a central shaft of the connecting part and the guiding part; the center hole of the part of the guide part near the front end is a Morse taper center hole, and the guide part is connected with the taper shank cutter through the Morse taper center hole;

The Morse taper shank reducing sleeve is converted between Morse taper numbers, and Morse taper autumn (for example, morse taper center holes with different types and specifications are 5, morse taper shank reducing sleeves with 5-to-4, 5-to-3, 5-to-2, 5-to-1 and the like can be sleeved), so that the size range of the clamping taper shank and the types and specifications of the cutting tool can be expanded, U-shaped drills (or taper shank twist drills) and ball milling cutters can be flexibly changed according to actual machining conditions, and are used in an exchange and matching mode, the size range of deep blind hole ball bottom machining is enlarged, and the machining capacity is improved.

Example 1 (Cone-straight)

The taper shank twist drill is directly installed as shown in fig. 4, and the taper shank ball end mill is directly installed as shown in fig. 5.

Example 2 (Cone-side straight)

The straight shank twist drill/U drill is installed through the side fixed cutter handle of the sleeved Morse taper shank as shown in figure 6, and the straight shank ball end milling cutter is installed through the side fixed cutter handle of the sleeved Morse taper shank as shown in figure 7.

Example 3 (Cone-Cone)

The taper shank twist drill is installed by sleeving a Morse reducer sleeve as shown in figure 8.

Example 4 (Cone-side straight)

The straight shank twist drill/U drill is installed through the Morse reducer sleeve and the Morse taper shank side fixed cutter handle in a sleeved mode as shown in figure 9, and the straight shank ball milling cutter is installed through the Morse reducer sleeve and the Morse taper shank side fixed cutter handle in a sleeved mode as shown in figure 10.

Further, a wrench groove is further formed in the guide portion, close to the connecting portion. And screwing the hook head wrench to enable the connecting part to be screwed, and installing the connecting part on the drill rod of the BAT deep hole drilling and boring machine.

Furthermore, two ends of the connecting part are also provided with positioning spigot which is coaxial with the central hole and the Morse taper central hole. The two sections of positioning spigot are matched with the positioning surface of the BAT drill rod, and the tolerance of the positioning spigot is h 5-h 6.

Claims

1. A processing blade holder suitable for BTA deep hole boring machine is characterized in that: comprises a connecting part, a guiding part and a central hole arranged in the connecting part and the middle shaft of the guiding part; the center hole of the part of the guide part near the front end is a Morse taper center hole, and the guide part is connected with the taper shank cutter through the Morse taper center hole;

2. The tool apron for a BTA deep hole drilling and boring machine in accordance with claim 1, wherein: the Morse taper shank reducing sleeve and the Morse taper shank side fixed cutter handle are used for switching and holding a straight shank cutter, a taper shank cutter and a side fixed cutter; the outside of Morse taper shank reducing sleeve is matched with the inside of the Morse taper center hole on the guide part, and the inside of Morse taper shank reducing sleeve is matched with the outside of the Morse taper shank side fixing cutter handle.

3. The tool apron for a BTA deep hole drilling and boring machine in accordance with claim 1, wherein: and the outer circumference of the guide part is also provided with an oil injection groove.

4. The tool apron for a BTA deep hole drilling and boring machine in accordance with claim 1, wherein: and a wrench groove is further formed in the guide part, which is close to the connecting part.

5. The tool apron for a BTA deep hole drilling and boring machine in accordance with claim 1, wherein: the guide key is fixedly arranged in the guide key mounting groove through the compression screw.

6. The tool apron for a BTA deep hole drilling and boring machine in accordance with claim 1, wherein: and positioning spigot ends are further arranged at the two ends of the connecting part, and the positioning spigot ends are coaxial with the central hole and the Morse taper central hole.

7. The tool insert for a BTA deep hole drilling and boring machine according to claim 1 or 2, wherein: the cutter is any one of a twist drill, a u-drill, a ball reamer and a ball end milling cutter.