CN219336814U

CN219336814U - Tool support device for machining concentric hole parts

Info

Publication number: CN219336814U
Application number: CN202223574555.6U
Authority: CN
Inventors: 孙胜勇; 任小霞; 凌芝; 黄建航; 叶蓉; 王宜芳; 董俊伟; 郭志强; 杨婷婷; 王雅楠
Original assignee: Inner Mongolia North Heavy Industries Group Co Ltd
Current assignee: Inner Mongolia North Heavy Industries Group Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-14
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a cutter supporting device for processing concentric hole parts, which comprises a plurality of supporting monomers, wherein the supporting monomers comprise: the device comprises a positioning block, a bolt cushion block, a drill bushing and a drill bushing positioning pin, wherein clamping jaws are respectively arranged on two sides of the bottom of the positioning block, a fixed through groove is formed in each clamping jaw, and a positioning block through hole and a plurality of positioning threaded holes are formed in the upper portion of the positioning block; the bolt cushion block comprises: the T-shaped bolt is provided with a cushion block at the bottom, a screw rod is arranged at the top of the cushion block, the screw rod is arranged in the fixed through groove, and the fastening nut is arranged on the screw rod; the drill bushing is provided with a drill bushing through hole in the middle part, the end part is provided with a drill bushing flange, the drill bushing flange is provided with a plurality of flange through holes, the drill bushing is arranged in the positioning block through hole, the bolt penetrates through the flange through hole to be connected to the positioning screw hole, and the drill bushing positioning pin is sleeved in the drill bushing through hole. The utility model can prevent the special cutter from swinging when processing the inner hole due to a longer distance, and improve the processing precision of the concentric inner hole.

Description

Tool support device for machining concentric hole parts

Technical Field

The utility model belongs to the field of machining, and particularly relates to a cutter supporting device for machining concentric hole parts.

Background

For parts with longer length (the length of the part is 1280 mm), a plurality of concentric inner holes are required to be processed, the centers of the holes are required to be on the same straight line, the coaxiality of the inner holes is required to be 0.02mm, the surface roughness Ra3.2mu m is required, the hole wall thickness is 40mm, and the distance between every two holes is 490.2-490.3mm. In order to ensure the surface roughness Ra3.2mu m of the inner hole, the part is arranged on a 1250mm multiplied by 1200mm numerical control boring and milling machine during processing, and the machine tool B shaft can rotate horizontally by 360 degrees. The technological method comprises the steps of drilling and reaming, wherein 2 inner holes are machined from two ends by utilizing the rotation center of a numerical control machine tool during machining, then the machined inner holes pass through one end of the machined inner holes, and the inner holes in the middle position are machined.

Disclosure of Invention

The utility model aims to provide a cutter supporting device for processing concentric hole parts, which can prevent a special cutter from swinging when processing an inner hole due to a longer distance and improve the processing precision of the concentric inner hole.

The technical proposal is as follows:

the utility model provides a cutter strutting arrangement of processing concentric hole system part, includes a plurality of support monomer, and the support monomer includes: the device comprises a positioning block, a bolt cushion block, a drill bushing and a drill bushing positioning pin, wherein clamping jaws are respectively arranged on two sides of the bottom of the positioning block, a fixed through groove is formed in the clamping jaws, a positioning block through hole and a plurality of positioning threaded holes are formed in the upper portion of the positioning block, and the positioning threaded holes are located on the outer side of the positioning block through hole; the bolt cushion block comprises: the T-shaped bolt is provided with a cushion block at the bottom, a screw rod is arranged at the top of the cushion block, the screw rod is arranged in the fixed through groove, and the fastening nut is arranged on the screw rod; the drill bushing is provided with a drill bushing through hole in the middle part, the end part is provided with a drill bushing flange, the drill bushing flange is provided with a plurality of flange through holes, the drill bushing is arranged in the positioning block through hole, the bolt penetrates through the flange through hole to be connected to the positioning screw hole, and the drill bushing positioning pin is sleeved in the drill bushing through hole.

Further, the positioning blocks and the drill bushing are positioned on the same axis.

Compared with the prior art, the utility model has the following advantages:

1. the use of the utility model can prevent the special cutter from swinging when the inner hole is machined due to a longer distance, and improve the machining precision of the concentric inner hole.

The parts adopt a cap type side wall positioning method, the side wall and the bottom surface of the parts are used as positioning references, then the special cutter is supported by the positioning block, the special cutter can be prevented from swinging due to the fact that the distance is far, and the qualification rate of the processed parts is 100% through production verification.

2. The utility model can be matched with a machine tool to quickly and efficiently ream the concentric inner holes.

Drawings

FIG. 1 is a schematic view of a positioning block in the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic diagram of a block structure of a bolt according to the present utility model;

fig. 4 is a schematic view of the structure of the drill bushing of the present utility model.

Detailed Description

The following description fully illustrates the specific embodiments of the utility model to enable those skilled in the art to practice and reproduce it.

As shown in fig. 1, a schematic structural view of a positioning block 1 in the present utility model is shown; as shown in fig. 2, is a top view of fig. 1.

The utility model provides a cutter strutting arrangement of processing concentric hole system part, includes a plurality of support monomer, and the support monomer includes: the positioning block 1, the bolt cushion block 2, the drill bushing 3 and the drill bushing positioning pin.

The two sides of the bottom of the positioning block 1 are respectively provided with a claw 11, each claw 11 is provided with a fixed through groove 12, the upper part of the positioning block 1 is provided with a positioning block through hole 13 and a plurality of positioning threaded holes 14, and the positioning threaded holes 14 are positioned outside the positioning block through hole 13.

Fig. 3 is a schematic diagram of a bolt spacer 2 according to the present utility model.

The bolt spacer 2 includes: t-shaped bolt 21, fastening nut 22, T-shaped bolt 21 is provided with the cushion in the bottom, and the cushion top is provided with the screw rod, and fastening nut 22 installs on the screw rod. When the positioning block 1 is fixed, the screw is arranged in the fixed through groove 12, and the cushion block is arranged in the T-shaped groove of the working surface of the machine tool.

As shown in fig. 4, a schematic view of the structure of the drill bushing 3 according to the present utility model is shown.

The drill bushing 3 is provided with a drill bushing through hole in the middle and a drill bushing flange 31 at the end, the drill bushing flange 31 being provided with a plurality of flange through holes 32. The drill bushing 3 is arranged in the positioning block through hole 13, and bolts penetrate through the flange through holes 32 and are connected to the positioning threaded holes 14 to fix the drill bushing 3 on the positioning block 1.

The drill bushing positioning pins are sleeved in the drill bushing through holes of the drill bushings 3 and used for positioning the positioning blocks 1 on the same axis so as to facilitate drilling.

The application method of the utility model is as follows:

1. preparation before processing

1) And the burrs of the part machining are removed, so that the clamping of the parts is facilitated.

The parts are horizontally placed on the equal-height sizing block on the machine tool workbench, the bottom plane and the outer end face of the parts are positioned, and after the outer end face is aligned, the parts are pressed by the screw pressing plate. And (3) setting the bottom plane and the outer side end surface of the part as the origin of a programming coordinate system, and determining the coordinate system of the part.

2) The tool (diameter phi 28 mm) drill bit, reamer (diameter phi 29.8 mm) reamer (diameter phi 30H9 mm) and measuring callipers, 30H9mm plug gauge and dial indicator are used for processing and are ready to be placed on a working station device.

2. Inner hole machining

A cutter supporting device for processing a plurality of concentric holes is arranged on a numerical control boring and milling machine, and the plurality of concentric holes are processed in a drilling, expanding and reaming mode by programming a numerical control program through the rotation of a machine tool B shaft and the feeding of a cutter in a linear motion.

1) Firstly machining the outermost inner hole of the part by using a phi 28mm drill bit, a phi 29.8mm reamer and a phi 30H9mm reamer during machining, and rotating a machine tool for 180 degrees to machine the outermost inner hole of the other side of the part;

2) Positioning an inner hole;

the T-shaped groove of the machine tool is utilized, the cushion blocks of the bolt cushion blocks 2 are installed in the T-shaped groove of the working surface of the machine tool and positioned at two sides of a machined part, the screw is installed in the fixed through groove 12 of the positioning block 1, the fastening nut 22 is installed on the screw to fix the positioning block 1, and the drill bushing 3 is installed in the positioning block through hole 13 and fixed by bolts. The drill bushing locating pins penetrate through drill bushing through holes of the drill bushings 3 to locate, the locating blocks are concentric in equal height, and the drill bushing through holes are utilized to realize concentricity of a plurality of inner holes on the machined part.

3) The cutter passes through a drill sleeve through hole of the drill sleeve 3 to process an inner hole, and the drill sleeve 3 provides support for the cutter to prevent the cutter from swinging;

4) And after the drill sleeve 3 is replaced, the inner hole is sequentially machined by using a reamer, and the inner hole machining is completed.

The drill sleeves 3 with different specifications can adapt to cutters with different diameters. And replacing the tool and the drill bushing with the corresponding diameter at the same time to finish the processing of the concentric inner hole.

4. Inspection of parts

The concentric inner hole size precision and form and position tolerance should be checked and accepted according to related product drawings, technical conditions and technical regulations.

The tool supporting device is arranged on the numerical control floor type boring and milling machine, so that the problems of overlong extension of a tool and non-concentricity of part holes during machining are solved, the machining process of a plurality of concentric inner holes is convenient and efficient, the precision is high, and the device has good popularization and application prospects.

The terminology used herein is for the purpose of description and illustration only and is not intended to be limiting. As the present utility model may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A tool support device for machining concentric hole parts, comprising a plurality of support cells, the support cells comprising: the device comprises a positioning block, a bolt cushion block, a drill bushing and a drill bushing positioning pin, wherein clamping jaws are respectively arranged on two sides of the bottom of the positioning block, a fixed through groove is formed in the clamping jaws, a positioning block through hole and a plurality of positioning threaded holes are formed in the upper portion of the positioning block, and the positioning threaded holes are located on the outer side of the positioning block through hole; the bolt cushion block comprises: the T-shaped bolt is provided with a cushion block at the bottom, a screw rod is arranged at the top of the cushion block, the screw rod is arranged in the fixed through groove, and the fastening nut is arranged on the screw rod; the drill bushing is provided with a drill bushing through hole in the middle part, the end part is provided with a drill bushing flange, the drill bushing flange is provided with a plurality of flange through holes, the drill bushing is arranged in the positioning block through hole, the bolt penetrates through the flange through hole to be connected to the positioning screw hole, and the drill bushing positioning pin is sleeved in the drill bushing through hole.

2. The tool support device for machining concentric bore parts of claim 1, wherein the plurality of locating blocks and the drill sleeve are positioned on the same axis.