CN208945190U

CN208945190U - A kind of hollow Boring Bar

Info

Publication number: CN208945190U
Application number: CN201821736591.9U
Authority: CN
Inventors: 潘献忠
Original assignee: CHANGZHOU QINGFENG YIKANG MACHINERY Co Ltd
Current assignee: CHANGZHOU QINGFENG YIKANG MACHINERY Co Ltd
Priority date: 2018-10-25
Filing date: 2018-10-25
Publication date: 2019-06-07
Anticipated expiration: 2028-10-25

Abstract

The utility model discloses a kind of hollow Boring Bars, it is related to cutting-tool engineering field, including cutter bar body, one end of the cutter bar body is provided with arbor holder, and the other end is provided with knife bar seat, is fixedly installed lathe tool on the knife bar seat, the arbor holder is connect by dismountable structure with the cutter bar body respectively with the knife bar seat, the cutter bar body is hollow structure, and is provided with clump weight between the knife bar seat in one end, and the clump weight is made of hard alloy.Cutter bar body is designed as hollow structure by the hollow Boring Bar of the utility model, knife bar weight is original 70%, clump weight is supported using hard alloy simultaneously, increase clump weight quality, Static stiffness only reduces by 6%, while being equipped with damping liquid and sealing rubber ring, forms damping, most hammer vibration energy can be eliminated, so as to improve vibration knife phenomenon.

Description

A kind of hollow Boring Bar

Technical field

The utility model relates to cutting-tool engineering field more particularly to a kind of hollow Boring Bars.

Background technique

The phenomenon that vibration knife is frequently encountered in machining, turning, boring inner hole are especially prominent, thin again to these two types of operating conditions Point, boring inner hole is more troublesome because in the equally reliable situation of Workpiece clamping, when turning, can by shortening lathe tool come Rigidity is improved, and when boring inner hole, to prevent vibration knife from detouring using more bothersome technique, or increase the repair procedures such as grinding, work Skill is more troublesome, and cost is also high.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of hollow Boring Bar.

The utility model adopts the following technical solution:

A kind of hollow Boring Bar, including cutter bar body, one end of the cutter bar body are provided with arbor holder, and the other end is set It is equipped with knife bar seat, lathe tool is fixedly installed on the knife bar seat, the arbor holder and the knife bar seat pass through removably respectively Structure is connect with the cutter bar body, and the cutter bar body is hollow structure, and sets between the knife bar seat in one end It is equipped with clump weight, the clump weight is made of hard alloy.

Preferably, seal assembly is additionally provided between the knife bar seat and the cutter bar body, the seal assembly includes Attachment base, the both ends of the attachment base pass through screw respectively and fix with the lathe tool and the clump weight, and the two of the attachment base End is respectively arranged with the first O-ring seals and the second O-ring seals, the first O-ring seals setting the attachment base with Between the clump weight, second O-ring seals are arranged between the clump weight and the cutter bar body.

Preferably, it is provided with annular groove on an end face of the knife bar seat on the attachment base, the annular is recessed Damping fluid is filled in slot.

Preferably, dismountable structure that the knife bar seat is connect with the cutter bar body is, including several along described The circumferentially distributed hex bolts of knife bar seat, the hex bolts pass through the knife bar seat and surround the attachment base wherein simultaneously It is connected as one with the cutter bar body.

Preferably, dismountable structure that the arbor holder is connect with the cutter bar body is that the arbor holder includes phase To the first connector and the second connector of setting, offered and the knife on first connector and second connector After the compatible semicircle card slot of bar body diameter, first connector and second connector block the cutter bar body It is connected as one by bolt and the cutter bar body.

The utility model has the following beneficial effects: cutter bar body is designed as sky by the hollow Boring Bar of the utility model Core structure, knife bar weight are original 70%, while clump weight being supported using hard alloy, increase clump weight (also referred to as vibration damping Block) quality, Static stiffness only reduces by 6%, while being equipped with damping liquid and sealing rubber ring, forms damping, can eliminate major part Hammer vibration energy, so as to improve vibration knife phenomenon.

Detailed description of the invention

Preferred explanation is made to the utility model with reference to the accompanying drawing:

Fig. 1 is the utility model overall structure diagram；

Fig. 2 is the utility model circular groove structure schematic diagram；

Fig. 3 is the utility model arbor holder structural schematic diagram；

In the figure, it is marked as 1, cutter bar body；2, arbor holder；21, the first connector；22, the second connector；23, semicircle Card slot；3, knife bar seat；4, lathe tool；5, clump weight；6, attachment base；7, the first O-ring seals；8, the second O-ring seals；9, annular Groove；10, hex bolts.

Specific embodiment

As shown in Figure 1-3, for a kind of hollow Boring Bar of the utility model, including cutter bar body 1, cutter bar body 1 One end is provided with arbor holder 2, and the other end is provided with knife bar seat 3, and lathe tool 4, arbor holder 2 and knife bar are fixedly installed on knife bar seat 3 Seat 3 is connect by dismountable structure with cutter bar body 1 respectively, and cutter bar body 1 is hollow structure, and one end is interior and knife bar It is provided with clump weight 5 between seat 3, clump weight 5 is made of hard alloy.

Specifically, bore hole, cutter length must be at least more than needing hole depth 20-30mm, and cutter effect outer diameter is less than hole Diameter, this occurs as soon as the inadequate problem of rigidity of cutter, and the draw ratio of typically hole, which is greater than 3, just will appear vibration knife mark, the utility model Deep-hole boring cutter knife bar, using hollow structure, knife bar weight m1 is original 70%, and Static stiffness only reduces by 6%, increases as far as possible Big damping block quality m2, reaches 6.17Kg (hard alloy), so that m2/m1=0.2, is equipped with clump weight in resonant frequency area, greatly Vibration is partially removed, hammer vibration energy is consumed, thus the phenomenon that solving vibration knife.

Seal assembly is additionally provided between knife bar seat 3 and cutter bar body 1, seal assembly includes attachment base 6, attachment base 6 Both ends pass through screw and lathe tool 4 respectively and clump weight 5 is fixed, and the both ends of attachment base 6 are respectively arranged with 7 He of the first O-ring seals Second O-ring seals 8, the first O-ring seals 7 are arranged between attachment base 6 and clump weight 6, and the setting of the second O-ring seals 8 exists Between clump weight 6 and cutter bar body 1.

Annular groove 9 is provided on attachment base 6 on an end face of knife bar seat 3, is filled with damping in annular groove 9 Liquid.

Further, by increasing damping liquid and rubber ring appropriate, damping is formed, can further be eliminated more Hammer vibration energy.

Dismountable structure that knife bar seat 3 is connect with cutter bar body 1 is, including several along the circumferentially distributed of knife bar seat 3 Hex bolts 10, hex bolts 10, which passes through knife bar seat 3 and surrounds attachment base 6, to be connected as one wherein and with cutter bar body 1.

Dismountable structure that arbor holder 2 is connect with cutter bar body 1 is that arbor holder 2 includes the first connection being oppositely arranged It is offered on body 21 and the second connector 22, the first connector 21 and the second connector 22 compatible with 1 diameter of cutter bar body Semicircle card slot 23, the first connector 21 and the second connector 22 are connect by bolt with cutter bar body 1 after blocking cutter bar body 1 It is integrated.

Specifically, knife bar seat is bolted with cutter bar body and arbor holder 2 is arranged to the knots of two halfbodies Structure, it is fixed with cutter bar body 1 by semicircle card slot 23, facilitate the installation and replacement of knife bar.

The above are only specific embodiments of the present invention, but the technical characteristics of the utility model is not limited thereto.Appoint How based on the utility model, to solve essentially identical technical problem, essentially identical technical effect is realized, it is made Simple change, equivalent replacement or modification etc., are all covered by among the protection scope of the utility model.

Claims

1. a kind of hollow Boring Bar, it is characterised in that: including cutter bar body, one end of the cutter bar body is provided with knife bar Folder, the other end are provided with knife bar seat, lathe tool are fixedly installed on the knife bar seat, and the arbor holder leads to respectively with the knife bar seat Dismountable structure is crossed to connect with the cutter bar body, the cutter bar body be hollow structure, and one end in the knife Clump weight is provided between pole socket, the clump weight is made of hard alloy.

2. hollow Boring Bar according to claim 1, it is characterised in that: between the knife bar seat and the cutter bar body It is additionally provided with seal assembly, the seal assembly includes attachment base, and the both ends of the attachment base pass through screw and the vehicle respectively Knife and the clump weight are fixed, and the both ends of the attachment base are respectively arranged with the first O-ring seals and the second O-ring seals, institute It states the first O-ring seals to be arranged between the attachment base and the clump weight, the second O-ring seals setting is matched described Between pouring weight and the cutter bar body.

3. hollow Boring Bar according to claim 2, it is characterised in that: close to the knife bar seat on the attachment base It is provided with annular groove on one end face, is filled with damping fluid in the annular groove.

4. hollow Boring Bar according to claim 3, it is characterised in that: the knife bar seat is connect with the cutter bar body Dismountable structure be that, including several circumferentially distributed hex bolts along the knife bar seat, the hex bolts passes through Attachment base encirclement is connected as one by the knife bar seat wherein and with the cutter bar body.

5. hollow Boring Bar according to claim 1, it is characterised in that: the arbor holder is connect with the cutter bar body Dismountable structure be that the arbor holder includes the first connector and the second connector being oppositely arranged, it is described first connection Semicircle card slot compatible with the cutter bar body diameter, first connector are offered on body and second connector It blocks with second connector and is connected as one by bolt and the cutter bar body after the cutter bar body.