CN215469572U

CN215469572U - Overlength shock attenuation cutter arbor

Info

Publication number: CN215469572U
Application number: CN202121912491.9U
Authority: CN
Inventors: 张世军; 赵莉; 王广新; 沈志强; 徐楠
Original assignee: CNNC Tianjin Technology Development Co Ltd
Current assignee: CNNC Tianjin Technology Development Co Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-01-11
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses an overlong damping cutter bar which comprises a cutter head, a base body and a damping rod, wherein an inner hole is formed in the middle of the base body; the shock absorption rod is arranged in the inner hole; tool bit one end inserts in the hole, and with the shock attenuation stick contact, and fixed through No. I jackscrew with the base member, the fluting is formed to the other end terminal surface, and ordinary cutter body is fixed through No. II jackscrews with the fluting. The utility model provides an overlong damping cutter bar suitable for machining an inner cavity of an overlong thin-wall cylindrical part on a common lathe, which meets the requirement of a machining stroke of a thin-wall long-cylinder part in a mode of increasing the length, realizes that the machining of an outer circle and an inner cavity can be completed by clamping the part once, improves the machining quality and the machining precision of the surface of the inner cavity of the part, and meets the design requirement.

Description

Overlength shock attenuation cutter arbor

Technical Field

The utility model belongs to a machining tool for a lathe, and particularly relates to an overlong damping cutter bar.

Background

The processing of the ultra-long thin-wall cylindrical part needs to process a cylindrical blank into a thin-wall long cylinder with the wall thickness of 0.5mm and the length of 550mm, and the cylindricity requirement of the part is extremely high, so that the part can only be clamped once to process an outer circle and an inner cavity, and cannot be clamped for the second time. Ordinary cutter arbor processing can't satisfy its 550 mm's inner chamber processing stroke, and overlength cutter arbor processing must lead to the fact the cutter arbor vibration, and direct influence processing surface quality and machining precision can't satisfy the design demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of processing the inner cavity of an ultra-long thin-wall cylindrical part, and provides a special ultra-long damping cutter bar suitable for processing the inner cavity of the ultra-long thin-wall cylindrical part on a common lathe.

The utility model is realized by the following technical scheme:

the overlong damping cutter bar comprises a cutter head, a base body and a damping rod, wherein an inner hole is formed in the middle of the base body; the shock absorption rod is arranged in the inner hole; tool bit one end inserts in the hole, and with the shock attenuation stick contact, and fixed through No. I jackscrew with the base member, the fluting is formed to the other end terminal surface, and ordinary cutter body is fixed through No. II jackscrews with the fluting.

In the above technical scheme, the cutter head is of a stepped shaft structure, the large-diameter end forms a groove, and the small-diameter end is inserted into the inner hole.

In the technical scheme, the large-diameter end of the cutter head is milled into a plane up and down.

In the above technical scheme, the outer diameter of the small-diameter end of the cutter head is smaller than the aperture of the inner hole.

In the technical scheme, the size of the groove is larger than that of a common cutter body.

In the technical scheme, the base body is of a stepped shaft structure, the small-diameter end is connected with the cutter head, a plurality of threaded holes for installing the No. I jackscrews are formed in the base body, the large-diameter end is vertically milled into a plane and is matched with a tool apron of a machine tool for clamping.

In the technical scheme, the damping rod is in small clearance fit with the base body.

The utility model has the beneficial effects that:

the utility model provides an overlong damping cutter bar suitable for machining an inner cavity of an overlong thin-wall cylindrical part on a common lathe, which meets the requirement of a machining stroke of a thin-wall long-cylinder part in a mode of increasing the length, realizes that the machining of an outer circle and an inner cavity can be completed by clamping the part once, improves the machining quality and the machining precision of the surface of the inner cavity of the part, and meets the design requirement. According to the utility model, the common cutter body is arranged at the groove of the large-diameter end of the cutter head in a matching way with the jackscrew, the small end of the cutter head is arranged in the inner hole of the base body in a matching way with the jackscrew, and the processing stroke of the cutter is increased by utilizing the base body, so that the processing stroke of processing the inner cavity of the thin-wall long-cylinder part can be met. Meanwhile, as the base body is internally provided with the damping rod, certain processing vibration is eliminated in the process of processing the inner cavity, thereby improving the surface processing quality of the inner cavity of the part.

Drawings

FIG. 1 is a schematic structural view of an ultra-long shock-absorbing tool bar of the present invention;

FIG. 2 is a cross-sectional view of an ultra-long shock absorbing tool bar of the present invention;

fig. 3 is an exploded view of an ultra-long shock-absorbing tool bar according to the present invention.

Wherein:

1 cutting head

11 open slot

2 base body

3 shock-absorbing rod

No. 4I jackscrew

No. 5 II jackscrew.

For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the drawings of the specification.

As shown in figures 1-3, the overlong damping cutter bar comprises a cutter head 1, a base body 2 and a damping rod 3. The base body 2 is of a stepped shaft structure with an inner hole formed in the middle, the small-diameter end is connected with the tool bit 1, a plurality of threaded holes used for installation of the No. I jackscrew 4 are formed in the small-diameter end, the large-diameter end is milled into a plane up and down, and the large-diameter end is matched with a tool apron of a machine tool for clamping. In the embodiment, the outer diameter phi of the large-diameter end of the base body is 70mm, the outer diameter phi of the small-diameter end of the base body is 50mm, the length of the small-diameter end of the base body is 95mm, the total length of the base body is 600mm, the inner hole phi is 40mm, the hole depth is 355mm, the required roundness of the inner hole is smaller than 0.02mm, the upper side and the lower side of the large-diameter end are milled into planes, the length of each plane is about 120mm, six threaded holes which are evenly divided by 120 degrees and phi 10mm are arranged at the small-diameter end, and the length of each threaded hole is two circles in three circles.

The shock-absorbing rod 3 is arranged in the inner hole and is in small clearance fit with the matrix 2. In the implementation, the shock-absorbing rod is a nylon rod with phi of 39.95mm and length of 354mm, the roundness requirement is less than 0.02mm, and the shock in the processing process is absorbed by using the material characteristics of the shock-absorbing rod in the processing process.

Tool bit 1 is the step shaft structure, and its path end inserts in the inner hole and 3 contacts with shock attenuation stick, and fixed through No. I jackscrew 4 with base member 2, and the big footpath end forms fluting 11, and just the big footpath end is held all to mill for the plane from top to bottom, and ordinary cutter body is fixed through No. II jackscrews 5 with fluting 11. The outer diameter of the small-diameter end of the cutter head is slightly smaller than the aperture of the inner hole of the base body, and the cutter head is matched with a jackscrew to be installed in the inner hole of the base body. In the embodiment, the large-diameter end of the cutter head is a cylinder with a phi 70mm middle rectangular groove, the groove size is slightly larger than the size of a common cutter body, the cutter body is convenient to assemble and disassemble, the groove height is the same as the height of the common cutter body assembled on a cutter holder, the height of the center is ensured to be unchanged, meanwhile, the large-diameter end is vertically milled into a plane, and the common cutter body is assembled on the large-diameter end of the cutter head by matching with a jackscrew.

The assembly process of the utility model:

installing a damping rod 5 in the inner hole of the base body 3, installing the small-diameter end of the cutter head 1 in the inner hole of the base body 3, and screwing 6 jackscrews 2; mounting the plane of one end of the base body 3 on a tool apron of a machine tool, and screwing a jackscrew on the tool apron to fix the base body; a common cutter body is arranged at the position of a groove of the cutter head 1, and the cutter body is fixed by screwing the jackscrew 4. The inner cavity processing of the thin-wall long cylindrical part can be finished.

The utility model provides an ultralong damping cutter bar suitable for processing an inner cavity of an ultralong thin-wall cylindrical part on a common lathe. The small-diameter end of the cutter head is matched with the jackscrew and arranged in the inner hole of the base body, and the base body is utilized to increase the processing stroke of the cutter, so that the processing stroke of processing the inner cavity of the thin-wall long-cylinder part can be met. Meanwhile, as the base body is internally provided with the damping rod, certain processing vibration is eliminated in the process of processing the inner cavity, so that the surface processing quality of the inner cavity of the part is improved; through the mode of increasing length, satisfy the needs of the long section of thick bamboo class part machining stroke of thin wall, realize that the processing of excircle and inner chamber is accomplished in clamping, satisfy the design demand.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.

Claims

1. The utility model provides an overlength shock attenuation cutter arbor which characterized in that: the tool comprises a tool bit (1), a base body (2) and a damping rod (3), wherein an inner hole is formed in the middle of the base body (2); the shock absorption rod (3) is arranged in the inner hole; tool bit (1) one end inserts in the hole, contacts with shock attenuation stick (3), and is fixed through No. I jackscrew (4) with base member (2), and other end terminal surface forms fluting (11), and ordinary cutter body is fixed through No. II jackscrews (5) with fluting (11).

2. The ultra-long shock absorbing arbor according to claim 1, characterized in that: the tool bit (1) is of a stepped shaft structure, a groove (11) is formed in the large-diameter end, and the small-diameter end is inserted into the inner hole.

3. The ultra-long shock absorbing arbor according to claim 2, characterized in that: the large-diameter end of the cutter head (1) is milled into a plane from top to bottom.

4. The ultra-long shock absorbing arbor according to claim 2, characterized in that: the outer diameter of the small-diameter end of the tool bit (1) is smaller than the aperture of the inner hole.

5. The ultra-long shock absorbing arbor according to claim 2, characterized in that: the size of the open groove (11) is larger than that of a common cutter body.

6. The ultra-long shock absorbing arbor according to claim 1, characterized in that: the base member is the step shaft structure, and the path end is connected with tool bit (1), and forms a plurality of screw holes that are used for No. I jackscrew (4) installation on it, and the path end is all milled for the plane from top to bottom, and cooperates the clamping with the lathe blade holder.

7. The ultra-long shock absorbing arbor according to claim 1, characterized in that: the shock absorption rod (3) is in small clearance fit with the base body (2).