CN112191869A

CN112191869A - Novel shock attenuation cutter arbor

Info

Publication number: CN112191869A
Application number: CN202011073371.4A
Authority: CN
Inventors: 刘艾民; 杨建业; 肖新田; 宋梦斌; 王腾伟
Original assignee: Leo Group Hunan Pump Co Ltd
Current assignee: Leo Group Hunan Pump Co Ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-01-08

Abstract

The invention discloses a novel shock-absorbing cutter bar which comprises a cutter bar body and a blade fixed at the front end of the cutter bar body, wherein a cutter bar cavity is arranged in the cutter bar body, the cutter bar cavity penetrates through one end far away from the blade, so that a cutter bar cavity opening is formed at one end far away from the blade, a core shaft is inserted in the cutter bar cavity, a through hole is formed in the axis direction of the core shaft, a shock-absorbing material is filled in the through hole, metal rings are sleeved on the outer walls of the two ends of the core shaft, the metal rings, the core shaft and the cutter bar body are respectively made of metal materials with different vibration frequencies, the core shaft and the metal rings are tightly attached to the inner wall of the cutter bar cavity, and the cutter bar. The vibration absorption material is added in the core shaft, the two ends of the core shaft are supported by different metal materials, and the resistance curve is comprehensively formed by utilizing different vibration frequencies of the different metal materials, so that the resistance effect is generated, the vibration is reduced, the structure is simple, the installation and the maintenance are convenient, and the manufacturing and the installation cost is lower.

Description

Novel shock attenuation cutter arbor

Technical Field

The invention relates to the technical field of machine tool parts, in particular to a novel damping cutter bar.

Background

The most common tools for metal cutting are machining devices. The core components of the cutter are a cutter head and a cutter rod connected with the cutter head. The tool relies primarily on the high hardness of the tool in the machining of metal materials and the like so that the metal material can be cut when the cutting edge of the tool bit presses against the surface of the metal workpiece. However, during the cutting process of the metal material, the cut metal simultaneously generates a reaction force acting on the cutter head and then is transmitted to the cutter rest through the cutter bar. Therefore, when the feed amount is large or the cutter rod is long, the cutter vibration phenomenon is easy to occur, so that the surface of the cut metal becomes rough, and the precision requirement of the cut metal is influenced in serious cases. Therefore, the requirements on the strength and the anti-vibration performance of the cutter bar during metal cutting are high.

Disclosure of Invention

The invention aims to solve the defects in the background technology and provides a novel damping cutter bar which is simple in structure, convenient to install and maintain and low in manufacturing and installing cost.

In order to achieve the purpose, the invention provides the following technical scheme that the novel damping cutter bar comprises a cutter bar body and a blade fixed at the front end of the cutter bar body, a cutter bar cavity is arranged inside the cutter bar body and penetrates through one end far away from the blade, so that a cutter bar cavity opening is formed at one end far away from the blade, a mandrel is inserted into the cutter bar cavity, a through hole is formed in the axis direction of the mandrel, vibration absorption materials are filled in the through hole, metal rings are sleeved on the outer walls of two ends of the mandrel, the metal rings, the mandrel and the cutter bar body are respectively made of metal materials with different vibration frequencies, the mandrel and the metal rings are tightly attached to the inner wall of the cutter bar cavity, and the cutter bar cavity opening is sealed through screws.

Furthermore, the metal rings at the two ends of the mandrel are provided with a plurality of metal rings, and each metal ring at the same end is made of metal materials with different vibration frequencies.

Furthermore, the number of the metal rings at two ends of the mandrel is three, and the three metal rings are an aluminum ring, a lead ring and a cast iron ring in sequence from one end close to the blade.

Further, the material of the cutter arbor body is 65Mn, and the material of dabber is 45 steel.

Further, the vibration absorption material is vibration absorption sand.

Furthermore, a mandrel through hole close to one end of the cutter bar cavity opening is provided with an internal thread, and the screw end of the screw is in threaded fastening connection with the mandrel.

The invention provides a novel damping cutter bar which has the following beneficial effects:

1. the cutter bar fully utilizes the damping characteristic of a plurality of different materials which are in mutual contact when vibrating, and the vibration absorption material filled in the central hole of the mandrel is added to absorb the vibration generated by the cutting head, so that the cutter bar can prevent the vibration generated by the cutting head from being transmitted to the cutter rest to the maximum extent to influence the roughness and the accuracy of cutting;

2. the aluminum ring, the lead ring and the cast iron ring can be replaced by other materials with different natural frequencies, and the arrangement positions and the number of the aluminum ring, the lead ring and the cast iron ring are not limited, so that the convenience in obtaining various shock absorption rings is improved, the installation and the use of the shock absorption rings are simpler, and the aluminum ring, the lead ring, the cast iron ring and the like can be recycled.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the cutter bar body of the present invention.

Fig. 3 is a schematic structural view of the mandrel of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the novel shock absorption cutter bar of this embodiment includes cutter bar body 1 and fixes blade 2 at cutter bar body 1 front end, cutter bar cavity 3 is equipped with inside the cutter bar body 1, cutter bar cavity 3 runs through the one end of keeping away from the blade to form cutter bar orifice 4 in the one end of keeping away from blade 2, it has dabber 6 to insert in cutter bar cavity 3, through-hole 7 that link up is seted up to dabber 6 axis direction through-hole 7 intussuseption is filled with vibration-absorbing material 8, vibration-absorbing material 8 is for shaking the sand in this embodiment. The outer wall cover in the both ends of dabber 6 has the becket, becket 6, the cutter arbor body 1 is made by the metal material of each difference of vibration frequency respectively, dabber 6 and becket all paste tight 3 inner walls in cutter arbor chamber, are close to the dabber through-hole 6 of 3 one ends in cutter arbor chamber mouth and are equipped with the internal thread, cutter arbor chamber mouth 4 passes through 5 shutoff of screw, and the screw rod end and the dabber screw thread fastening of screw 4 are connected.

In this embodiment, the cutter arbor body 1 is made of 65Mn, the mandrel 5 is made of 45 # steel, the number of the metal rings at the two ends of the mandrel 6 is three, and the three metal rings are an aluminum ring 9, a lead ring 10 and a cast iron ring 11 in sequence from one end close to the blade.

The aluminum ring 9, the lead ring 10 and the cast iron ring 11 can be replaced by other materials with different natural frequencies, the arrangement positions and the number of the materials are not limited, and a comprehensive resistance curve can be generated by combining and installing a plurality of materials together according to the different natural frequencies of different materials, so that resonance can be effectively prevented through the generated resistance effect, and the vibration absorbing sand 7 can be replaced by other filling materials capable of absorbing vibration according to actual needs, so that the vibration of the cutter arbor can be reduced to the maximum extent.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.

Claims

1. The utility model provides a novel shock attenuation cutter arbor, includes the cutter arbor body (1) and fixes blade (2) at cutter arbor body (1) front end, its characterized in that: the cutter bar comprises a cutter bar body (1), a cutter bar cavity (3) is arranged inside the cutter bar body (1), the cutter bar cavity (3) penetrates through one end of the cutter bar far away from the blade, a cutter bar cavity opening (4) is formed in one end of the cutter bar far away from the blade (2), a mandrel (6) is inserted into the cutter bar cavity (3), a through hole (7) which is communicated with the mandrel (6) is formed in the axis direction of the mandrel (6), a vibration absorption material (8) is filled in the through hole (7), metal rings are sleeved on the outer walls of two ends of the mandrel (6), the metal rings, the mandrel (6) and the cutter bar body (1) are respectively made of different metal materials with vibration frequencies, the mandrel (6) and the metal rings are tightly attached to the inner wall of the cutter bar cavity (3), and the cutter.

2. The novel shock absorption cutter bar as claimed in claim 1, wherein: the metal rings at two ends of the mandrel (6) are provided with a plurality of metal rings, and each metal ring at the same end is made of metal materials with different vibration frequencies.

3. The novel shock absorption cutter bar as claimed in claim 2, wherein: the number of the metal rings at two ends of the mandrel (6) is three, and the three metal rings are an aluminum ring (9), a lead ring (10) and a cast iron ring (11) in sequence from one end close to the blade.

4. The novel shock absorption cutter bar as claimed in claim 1, wherein: the cutter bar body (1) is made of 65Mn, and the mandrel (5) is made of No. 45 steel.

5. The novel shock absorption cutter bar as claimed in claim 1, wherein: the vibration absorption material (8) is vibration absorption sand.

6. The novel shock absorption cutter bar as claimed in claim 1, wherein: the mandrel through hole (6) close to one end of the cutter bar cavity opening (3) is provided with an internal thread, and the screw end of the screw (4) is in threaded fastening connection with the mandrel.