CN217018663U

CN217018663U - Novel boring cutter structure

Info

Publication number: CN217018663U
Application number: CN202220907295.0U
Authority: CN
Inventors: 李乐; 李玉龙; 李岩; 柳玉泽
Original assignee: Dezhou Zhongtuo Machine Tool Manufacturing Co ltd
Current assignee: Dezhou Zhongtuo Machine Tool Manufacturing Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-22
Anticipated expiration: 2032-04-19

Abstract

The utility model belongs to the technical field of boring cutters, and relates to a novel boring cutter structure which comprises a boring cutter holder and a boring cutter rod, wherein the boring cutter holder is provided with a boring cutter rod shaft hole, a counterweight mechanism is arranged on the boring cutter rod and comprises a counterweight block, a fixing block and a fastening assembly, the counterweight block is sleeved on the boring cutter rod, two sides of the counterweight block are respectively limited by the fixing block and are fastened and fixed by the fastening assembly, and the counterweight block and the fixing block and the boring cutter rod are assembled and positioned through a guide key.

Description

Novel boring cutter structure

Technical Field

The utility model belongs to the technical field of boring cutters, and particularly relates to a novel boring cutter structure.

Background

When the existing middle-large horizontal lathe is used for processing an inner hole of a workpiece with the depth of 300mm or more, when a turning tool is arranged on an equipment tool rest, the rigidity of the tool rest and the tool bar is insufficient, so that the turning vibration is easily caused. Based on the situation, each manufacturer adopts a boring cutter seat structure for adding special inner hole processing on the sliding plate: a special boring bar is arranged in the tool apron, the section of the tool is increased to improve the rigidity, and the tool apron is used for increasing the supporting length of the tool bar to improve the rigidity of the tool.

However, due to the design structure, the base and the cover are mostly adopted to form the boring cutter holder in a split structure, the processing and manufacturing difficulty is high, the boring rod is used for processing an inner hole with a depth of 300mm or more, the boring rod at the processing end needs to extend out of the cutter holder to be long, the cutter bar has a relatively large diameter due to the requirement of cutting on rigidity, the weight of the cutting end of the boring cutter bar is increased, and due to the influence of cutting force during processing of the inner hole, a certain balance device is required to be added at the rear part of the boring cutter bar to achieve the expected stable cutting effect.

The existing structure of the balancing device at the rear part of the boring bar is mostly balanced by lengthening the length of the boring bar or combining a balancing weight and the like; the length of the boring bar is increased, the interference area of the boring bar during machining is increased, the simple counterweight structure is combined, the boring bar needs to move back and forth when the machining depth of the boring bar is different, the counterweight position can change along with the boring bar, the counterweight weight cannot be adjusted in time, and the good counterweight effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel boring cutter structure which can solve the problems pointed out in the background technology.

The utility model provides a novel boring cutter structure, includes boring blade holder, boring cutter pole, the boring blade holder has boring cutter pole shaft hole, be equipped with counterweight mechanism on the boring cutter pole, counterweight mechanism includes balancing weight, fixed block and fastening components, the balancing weight cover is established on the boring cutter pole, and it is spacing through the fixed block respectively in its both sides to it is fixed through the fastening components fastening, the balancing weight and the fixed block with realize the positioning through the feather key between the boring cutter pole.

Preferably, the guide key is arranged at one end of the inner side of the boring cutter rod, and key grooves matched with the guide key are respectively arranged on the balancing weight and the fixing block.

Preferably, the cross section of the guide key is a trapezoidal cross section or a triangular cross section.

Preferably, the fastening assembly is a locking screw, and a threaded hole matched with the locking screw is formed in the fixing block.

Preferably, a copper cushion block is arranged in the threaded hole and is located on the inner side of the locking screw.

Preferably, a handle boss is arranged on the outer side of the boring cutter rod shaft hole, a notch is formed in the handle boss and communicated with the boring cutter rod shaft hole, and a plurality of handle bolts are arranged on the handle boss.

Preferably, the handle boss is positioned right above the boring cutter rod shaft hole.

Preferably, a reducing sleeve is arranged in the shaft hole of the boring cutter rod.

The utility model provides a novel boring cutter structure, which can flexibly increase and decrease the weight of a balance weight according to the specific position and the use condition of a boring rod, can be quickly assembled and disassembled, is convenient to operate and is simple to manufacture.

Drawings

FIG. 1 is a schematic view of the structure of the present invention,

FIG. 2 is a schematic structural view of a boring tool holder of the present invention,

figure 3 is a side schematic view of the present invention,

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3,

FIG. 5 is a schematic cross-sectional view taken at B-B of FIG. 3 according to the present invention,

description of reference numerals:

the reference numbers in the figures: a boring cutter holder 1; a boring cutter bar 2; a boring cutter bar shaft hole 3; a handle boss 31; a notch 32; a fastening bolt 33; a weight 41; a fixed block 42; a guide key 43; a key groove 44; a locking screw 5; a threaded hole 6; a copper cushion block 7; and a diameter-changing sleeve 8.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

Example 1:

as shown in fig. 1 to 5, the fog-dissipation water-saving counter-flow condenser provided by the embodiment of the present invention includes a boring tool apron 1 and a boring tool bar 2, wherein the boring tool apron 1 has a boring tool bar shaft hole 3, the boring tool bar 2 is provided with a counterweight mechanism, the counterweight mechanism includes a counterweight block 41, a fixing block 42 and a fastening component, the counterweight block 41 is sleeved on the boring tool bar 2, two sides of the counterweight block are respectively limited by the fixing block 42 and are fastened and fixed by the fastening component, specifically, the fastening component is a locking screw 5, the fixing block 42 is provided with a threaded hole 6 matched with the locking screw 5, and the locking screw 5 is screwed inwards to tightly press against the boring tool bar 2, so that the counterweight mechanism is stabilized; the counterweight mechanism can be quickly replaced and adjusted through the structure, and the counterweight weight can be flexibly increased and decreased;

the counterweight block 41, the fixing block 42 and the boring bar 2 are assembled and positioned through the guide key 43, specifically, the guide key 43 is arranged at one end of the inner side of the boring bar 2, the counterweight block 41 and the fixing block 42 are respectively provided with a key groove 44 matched with the guide key 43, the section of the guide key 43 is a trapezoid section or a triangle section, and the guide key 43 can realize quick assembly and positioning.

The threaded hole 6 is internally provided with a copper cushion block 7, the copper cushion block 7 is positioned on the inner side of the locking screw 5, the copper cushion block 7 is a cylindrical block, the hardness of the copper cushion block 7 is low, and the boring cutter bar 2 can be effectively prevented from being damaged.

Example 2:

as shown in fig. 1-3, in order to facilitate replacement or adjustment of parts such as the boring bar, a handle-engaging boss 31 is provided on the outer side of the boring bar shaft hole 3, a notch 32 is provided on the handle-engaging boss 31, the notch 32 communicates with the inside of the boring bar shaft hole 3, a plurality of handle-engaging bolts 33 are provided on the handle-engaging boss 31, the handle-engaging boss 31 is located right above the boring bar shaft hole 3, the boring bar shaft hole 3 and the handle-engaging boss 31 are integrally formed, and the notch 32 is cut after finishing the inner hole of the boring bar shaft hole 3, so that the processing precision can be fully ensured, and the assembly precision can be ensured;

the reducing sleeve 8 is arranged in the boring cutter rod shaft hole 3, and the reducing sleeve 8 is arranged to adapt to size change of the boring cutter rod 2, so that the boring cutter rod is convenient to replace and operate.

The following disclosure is only for a few specific embodiments of the present invention, however, the embodiments of the present invention are not limited thereto, and any modifications that can be made by those skilled in the art should fall within the scope of the present invention.

Claims

1. The utility model provides a novel boring cutter structure, includes boring blade holder (1), boring cutter pole (2), boring blade holder (1) has boring cutter pole shaft hole (3), its characterized in that: the boring cutter bar (2) is provided with a counterweight mechanism, the counterweight mechanism comprises a counterweight block (41), a fixing block (42) and a fastening assembly, the counterweight block (41) is sleeved on the boring cutter bar (2), two sides of the counterweight block are limited by the fixing block (42) respectively and are fastened and fixed by the fastening assembly, and the counterweight block (41), the fixing block (42) and the boring cutter bar (2) are assembled and positioned through a guide key (43).

2. The novel boring cutter structure as claimed in claim 1, wherein: the guide key (43) is arranged at one end of the inner side of the boring cutter rod (2), and key grooves (44) matched with the guide key (43) are respectively formed in the balancing weight (41) and the fixing block (42).

3. The novel boring cutter structure as claimed in claim 2, wherein: the section of the guide key (43) is a trapezoidal section or a triangular section.

4. The novel boring cutter structure as claimed in claim 1, wherein: the fastening component is a locking screw (5), and a threaded hole (6) matched with the locking screw (5) is formed in the fixing block (42).

5. The novel boring cutter structure as claimed in claim 4, wherein: and a copper cushion block (7) is arranged in the threaded hole (6), and the copper cushion block (7) is positioned on the inner side of the locking screw (5).

6. The novel boring cutter structure as claimed in any one of claims 1 to 5, wherein: the outer side of the boring bar shaft hole (3) is provided with a handle boss (31), the handle boss (31) is provided with a notch (32), the notch (32) is communicated with the inside of the boring bar shaft hole (3), and the handle boss (31) is provided with a plurality of handle bolts (33).

7. The novel boring cutter structure as claimed in claim 6, wherein: the handle boss (31) is positioned right above the boring cutter rod shaft hole (3).

8. The novel boring cutter structure as claimed in any one of claims 1 to 5, wherein: and a reducing sleeve (8) is arranged in the boring cutter bar shaft hole (3).