CN218694156U

CN218694156U - Radial feed mechanism of conical deep hole boring machine

Info

Publication number: CN218694156U
Application number: CN202222692717.XU
Authority: CN
Inventors: 陈建立; 崔攀峰; 任玲玲; 王志刚
Original assignee: Luoyang Guangwei Precision Technology Co ltd
Current assignee: Luoyang Guangwei Precision Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-03-24
Anticipated expiration: 2032-10-13

Abstract

A radial feed mechanism of a conical surface deep hole boring machine comprises a base, wherein a rotatable boring rod is arranged on the base, a boring tool holder is arranged on the boring rod, and the boring tool holder can move along the axial direction of the boring rod under the driving of an axial feed mechanism; an axial rack is fixed on the boring rod, a radial sliding groove is arranged on the boring tool holder, a radial rack is arranged in the radial sliding groove, the radial rack is in sliding fit with the radial sliding groove, and a boring tool is arranged at one end of the radial rack; and a gear reducer is connected to the boring cutter frame, wherein an input end gear of the gear reducer is meshed with the axial rack, and an output end gear of the gear reducer is meshed with the radial rack. The radial feed mechanism enables the special boring machine for the conical deep hole to have a radial feed function, and the boring cutter can feed in a radial direction according to a proportion while feeding in an axial direction, so that the processing of the conical deep hole is realized. For machining requirements of different tapers, the taper machining can be adjusted by changing the reduction ratio of the gear reducer.

Description

Radial feed mechanism of conical deep hole boring machine

Technical Field

The utility model belongs to the technical field of machining equipment and specifically relates to a radial feed mechanism of conical surface deep hole boring machine is related to.

Background

When the inner hole of the tubular workpiece is machined, a boring machine is needed, the traditional boring machine drives the tubular workpiece to rotate through a spindle box and a chuck, and a boring cutter rod moves axially to cut the inner hole of the tubular workpiece. However, for a large tubular workpiece, due to the large self weight and large rotational inertia, the loads of the spindle box and the transmission mechanism are greatly increased, and the electric energy consumption is huge. In addition, the boring cutter bar of the existing boring machine is of a cantilever structure, so that the rigidity is poor, the drooping amount is large, and the machining precision is difficult to ensure.

In order to solve the problems, the company develops a special boring machine for deep hole machining. As shown in figure 1, a base 1 of the special boring machine is provided with a motor 2, a reduction gearbox 3, a pair of V-shaped blocks 4 and a detachable boring bar 6, and one end of the boring bar 6 is connected with the reduction gearbox 3 through a coupler. Before processing, a large tubular workpiece is firstly hung on the V-shaped block 4 and is fixed through a clamp; then the boring bar 6 is inserted into the hole of the large tubular workpiece, and both ends of the boring bar 6 are fixed to the base 1. The boring bar 6 is provided with an axial feed mechanism, when machining is carried out, the motor 2 drives the boring bar 6 to rotate, and the boring bar 6 drives the boring cutter 11 frame 7 to move along the axial direction of the large-sized tubular workpiece while rotating so as to cut an inner hole. Because the rotating part of the special boring machine is the boring bar 6, compared with a large tubular workpiece, the boring bar 6 has small weight and small rotational inertia, thereby not only reducing the burden of a spindle box and a transmission mechanism, but also greatly reducing the consumption of electric energy. In addition, the boring bar 6 is of a double-support structure, so that the boring bar is high in rigidity and small in sagging amount, and machining precision of an inner hole can be well guaranteed.

However, the special boring machine has no radial feed mechanism, and has functional defects for large tubular workpieces needing to machine conical inner holes. The conventional radial feed mechanism is usually driven by a motor, but since the boring bar is a rotating member, the power supply of the motor is a problem which is difficult to solve. Therefore, a mechanical radial feed mechanism needs to be designed to meet the requirement of conical surface inner hole machining.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough in the background art, the utility model discloses a radial feed mechanism of conical surface deep hole boring machine adopts following technical scheme:

a radial feed mechanism of a conical surface deep hole boring machine comprises a base, wherein a rotatable boring rod is arranged on the base, a boring tool holder is arranged on the boring rod, and the boring tool holder can move along the axial direction of the boring rod under the driving of an axial feed mechanism; an axial rack is fixed on the boring rod, a radial sliding groove is arranged on the boring tool holder, a radial rack is arranged in the radial sliding groove, the radial rack is in sliding fit with the radial sliding groove, and a boring tool is arranged at one end of the radial rack; and a gear reducer is connected to the boring cutter frame, wherein an input end gear of the gear reducer is meshed with the axial rack, and an output end gear of the gear reducer is meshed with the radial rack.

Further improve technical scheme, gear reducer passes through the bolt and can dismantle with boring cutter frame and be connected.

According to the technical scheme, the gear reducer is provided with a two-stage speed reduction structure.

The technical scheme is further improved, and the modulus of the axial rack is larger than that of the radial rack.

The technical scheme is further improved, a square hole for installing a boring cutter is formed in one end of the radial rack, a gasket is placed in the square hole, and a fastening screw is screwed on the side portion of the square hole.

According to the technical scheme, the radial sliding groove is a dovetail sliding groove.

Owing to adopt above-mentioned technical scheme, compare the background art, the utility model discloses following beneficial effect has:

the radial feed mechanism enables the special boring machine for the conical deep hole to have a radial feed function, and the boring cutter can feed in a radial direction according to a proportion while feeding in an axial direction, so that the processing of the conical deep hole is realized. For machining requirements of different tapers, the taper machining can be adjusted by changing the reduction ratio of the gear reducer.

In addition, the radial feed mechanism does not hinder the processing of the inner hole of the cylinder, and only needs to disassemble the gear reducer when the inner hole of the cylinder is processed, and the radial rack is fixed in the radial sliding groove through a bolt.

Drawings

Fig. 1 is a schematic structural diagram of a conventional special boring machine for deep hole machining.

Fig. 2 shows a schematic structural diagram of the special boring machine for deep hole machining.

Fig. 3 shows a schematic structural diagram of the present radial feed mechanism.

Fig. 4 shows a schematic cross-sectional structure of fig. 3.

In the figure: 1. a base; 2. a motor; 3. a reduction gearbox; 4. a coupling; 5. a V-shaped block; 6. boring a rod; 7. a boring tool holder; 8. an axial rack; 9. a radial rack; 10. a gear reducer; 11. boring cutter; 12. a gasket; 13. and (5) fastening the screw.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. It should be noted that in the description of the present invention, the terms "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, but do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in figure 2, the conical surface deep hole boring machine comprises a base 1, wherein a rotatable boring rod 6 is mounted on the base 1, and the boring rod 6 is a hollow cylinder and has high rigidity. The boring bar 6 is provided with a boring cutter 11 frame 7, the boring cutter 11 frame 7 is sleeved on the boring bar 6, and the boring cutter 11 frame 7 can move along the axial direction of the boring bar 6 under the driving of the axial cutter feeding mechanism.

In order to achieve radial feed of the boring tool 11, an axial toothed rack 8 is fixed in the axial direction on the boring bar 6, see fig. 3 and 4. The boring tool 11 holder 7 is provided with a radial sliding groove along the radial direction. In the present embodiment, the radial sliding grooves are dovetail sliding grooves, and radial racks 9 are mounted in the radial sliding grooves. The lower part of the radial rack 9 is in sliding fit with the radial sliding groove, and the radial rack 9 can slide in the radial sliding groove.

A boring cutter 11 is mounted at one end of the radial rack 9. Specifically, a square hole for mounting a boring cutter 11 is formed at one end of the radial rack 9, a gasket 12 is placed in the square hole, and the gasket 12 is used for adjusting the extending length of the boring cutter 11. A fastening screw 13 is screwed at the side part of the square hole, and the fastening screw 13 is used for fixing the boring cutter 11 in the square hole.

The boring tool holder 7 is connected with a gear reducer 10, and the gear reducer 10 is detachably connected with the boring tool holder 7 through bolts. The input end gear of the gear reducer 10 is meshed with the axial rack 8, and the output end gear of the gear reducer 10 is meshed with the radial rack 9. In the present embodiment, the gear reducer 10 has a two-stage reduction structure, and the modulus of the axial rack 8 is larger than that of the radial rack 9.

Referring to fig. 4, in operation, the distance from the boring cutter 11 to the inner hole of the workpiece is firstly adjusted through the gasket 12, and then the boring cutter holder 7 is driven by the axial feed mechanism to move along the axial direction of the boring bar 6. At this time, the input end gear of the gear reducer 10 is engaged with the axial rack 8, and after two-stage reduction of the gear reducer 10, the output end gear of the gear reducer 10 drives the radial rack 9 to move outward, so that the boring cutter 11 is fed in the radial direction. Generally, the taper of the conical deep hole is small, and after the speed reduction by the gear reducer 10, when the boring cutter holder 7 moves 1000 mm along the axial direction of the boring bar 6, the radial feed amount of the boring cutter 11 is only a few mm. When the boring cutter holder 7 moves reversely, the boring cutter 11 retracts in the radial direction, and radial cutter withdrawal is realized.

It is noted that adjustment of the taper machining can be achieved by changing the reduction ratio of the gear reducer 10 for different taper machining requirements. When the cylindrical inner hole is processed, only the gear reducer 10 needs to be removed, and the radial rack 9 is fixed in the radial sliding groove through the bolt.

Therefore, the radial feed mechanism realizes the radial feed of the boring cutter through a mechanical structure, and is matched with the axial feed mechanism to realize the processing of the deep hole of the conical surface.

The details of which are not described in the prior art. 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 radial feed mechanism of the conical surface deep hole boring machine comprises a base, wherein a rotatable boring rod is mounted on the base, a boring tool holder is mounted on the boring rod, and the boring tool holder can move axially along the boring rod under the driving of the axial feed mechanism, and is characterized in that: an axial rack is fixed on the boring rod, a radial sliding groove is arranged on the boring tool holder, a radial rack is arranged in the radial sliding groove, the radial rack is in sliding fit with the radial sliding groove, and a boring tool is arranged at one end of the radial rack; and a gear reducer is connected to the boring cutter frame, wherein an input end gear of the gear reducer is meshed with the axial rack, and an output end gear of the gear reducer is meshed with the radial rack.

2. The radial feed mechanism of the conical deep hole boring machine as claimed in claim 1, wherein: the gear reducer is detachably connected with the boring tool holder through a bolt.

3. The radial feed mechanism of the conical deep-hole boring machine as claimed in claim 1, wherein: the gear reducer has a two-stage reduction structure.

4. The radial feed mechanism of the conical deep hole boring machine as claimed in claim 1, wherein: the modulus of the axial rack is larger than that of the radial rack.

5. The radial feed mechanism of the conical deep-hole boring machine as claimed in claim 1, wherein: one end of the radial rack is provided with a square hole for installing a boring cutter, a gasket is placed in the square hole, and a fastening screw is screwed on the side part of the square hole.

6. The radial feed mechanism of the conical deep hole boring machine as claimed in claim 1, wherein: the radial sliding groove is a dovetail sliding groove.