CN212977442U

CN212977442U - Floating tool bit

Info

Publication number: CN212977442U
Application number: CN202021064217.6U
Authority: CN
Inventors: 向东; 龙虹云; 甘论文; 达利平
Original assignee: Establishment of Aviation Co Ltd
Current assignee: Establishment of Aviation Co Ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-04-16
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a tool bit floats, including cutter arbor and tool bit, first reducing pipe box and second reducing pipe box have been cup jointed respectively at both ends about the cutter arbor, the universal joint has been cup jointed to second reducing pipe box bottom, the universal joint includes first connector, first connecting piece, cross bearing, second connecting piece, connecting pin and second connector, second connector bottom fixedly connected with knife rest, knife rest bottom fixedly connected with tool bit. This kind of floating cutter head connects cutter arbor and knife rest through setting up the universal joint, produces the angle when permitting cutter arbor and tool bit to rotate, can ensure cutter head pivoted floatability, and then can not vibrate when can making cutter processing deep hole, and the machining precision is high, and production efficiency is high, and the cutter is difficult for wearing and tearing, reduces the processing cost.

Description

Floating tool bit

Technical Field

The utility model relates to the technical field of machinery, specifically be a tool bit floats.

Background

With the rapid development of the mechanical industry, deep hole machining occupies a very important position in the field of machining, which accounts for about 40% of the machining amount of holes, and with the progress of the scientific and technological technology, novel high-strength, high-hardness and high-value deep hole parts difficult to machine continuously appear, the requirement on the precision of the machined deep hole is higher, the depth is deeper, and the deep hole parts become the key process and the machining difficulty of the machining. In the prior art, wear-resistant inlaid strips are machined by a trepanning cutter, and the cutter is made of cloth-sandwiched bakelite and the like. And welding an elongated handle on a common twist drill. When a deep hole is machined, when a common boring cutter bores to a certain degree, a cutter bar is lengthened, a cutter vibration is easily generated, the axial line of the hole is easy to deflect, the precision of the bored hole is not high, the cutter is greatly abraded, the cutter is easy to break, and the like. To this end, we propose a floating cutter head.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tool bit floats to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a floating cutter head, includes cutter arbor and cutter head, first reducing pipe box and second reducing pipe box have been cup jointed respectively at both ends about the cutter arbor, the universal joint has been cup jointed to second reducing pipe box bottom, the universal joint includes first connector, first connecting piece, cross bearing, second connecting piece, connecting pin and second connector, first connector outer end and second reducing pipe box fixed connection, the welding of first connector bottom end fixed has first connecting piece, through cross bearing swing joint between first connecting piece and the second connecting piece, the both sides wing middle part of first connecting piece and second connecting piece all is through the tip swing joint of connecting pin with the cross bearing, the welding of second connecting piece bottom has the second connector, second connector bottom fixed connection has the cutter rest, cutter rest bottom fixed connection has the cutter head.

Preferably, the first reducing pipe sleeve and the second reducing pipe sleeve are identical in shape and size.

Preferably, the first connecting piece and the second connecting piece are both U-shaped connecting pieces, and are identical in shape and size.

Preferably, the outer diameters of the first reducing pipe sleeve, the cutter bar, the second reducing pipe sleeve, the universal joint and the cutter rest are smaller than or equal to the outer diameter of the cutter head.

Preferably, the outer diameter of the tool holder is equal to the maximum outer diameter of the first reducing pipe sleeve.

Compared with the prior art, the beneficial effects of the utility model are that: this kind of floating cutter head connects cutter arbor and knife rest through setting up the universal joint, produces the angle when permitting cutter arbor and tool bit to rotate, can ensure cutter head pivoted floatability, and then can not vibrate when can making cutter processing deep hole, and the machining precision is high, and production efficiency is high, and the cutter is difficult for wearing and tearing, reduces the processing cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: the universal joint comprises a first reducing pipe sleeve 1, a cutter rod 2, a second reducing pipe sleeve 3, a universal joint 4, a first connecting piece 41, a first connecting piece 42, a cross bearing 43, a second connecting piece 44, a connecting pin 45, a second connecting piece 46, a cutter frame 5 and a cutter head 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a floating cutter bit comprises a cutter bar 2 and a cutter bit 6, wherein a first reducing pipe sleeve 1 and a second reducing pipe sleeve 3 are respectively sleeved at the upper end and the lower end of the cutter bar 2, the shapes and the sizes of the first reducing pipe sleeve 1 and the second reducing pipe sleeve 3 are the same, the cutter bar 2 is fixed on a machine tool through the first reducing pipe sleeve 1, a universal joint 4 is sleeved at the bottom end of the second reducing pipe sleeve 3, the universal joint 4 is a cross universal joint, the universal joint 4 comprises a first connecting piece 41, a first connecting piece 42, a cross bearing 43, a second connecting piece 44, a connecting pin 45 and a second connecting piece 46, the outer end of the first connecting piece 41 is fixedly connected with the second reducing pipe sleeve 3, the cutter bar 2 is fixedly connected with the first connecting piece 41 of the universal joint through the second reducing pipe sleeve 3, a countersunk hole can be formed in the side wall of the outer end of the second reducing pipe sleeve 3 and is fixedly connected with the first connecting piece 41, also adopt the butt joint of screw thread butt joint mode, the fixed welding in first connector 41 bottom has first connecting piece 42, through cross bearing 43 swing joint between first connecting piece 42 and the second connecting piece 44, the both sides wing middle part of first connecting piece 42 and second connecting piece 44 all is through the tip swing joint of connecting pin 45 with cross bearing 43, can take place relative rotation between connecting pin 45 and first connecting piece 42 and the second connecting piece 44, and the connecting pin 45 bottom passes through the tip of screw thread fixed connection at cross bearing 43, consequently can take place relative angular rotation between first connecting piece 42 and the second connecting piece 44, first connecting piece 42 and second connecting piece 44 are U type connecting piece, and the shape size is all the same. Second connector 44 bottom welding has second connector 46, second connector 46 bottom fixedly connected with knife rest 5 can be opened on knife rest 5 and be equipped with the counter bore, through bolt and second connector 46 fixed connection, the external diameter of knife rest 5 equals the biggest external diameter of first reducing pipe box 1, and knife rest 5 also can the lug connection promptly on the lathe. The utility model discloses a drill bit, including knife rest 5, first reducing pipe box 1, cutter arbor 2, second reducing pipe box 3, universal joint 4, knife rest 5, the first reducing pipe box 1, cutter arbor 2, the second reducing pipe box 3, the universal joint 4 and the first diameter of knife rest 5 all need be less than or equal to the external diameter of cutter head 6, and the first reducing pipe box 1, cutter arbor 2, the second reducing pipe box 3, the universal joint 4 and the external diameter of knife rest 5 all need be less than the aperture of drilling, and cutter head 6 can adopt drill bit formula cutter head, also can adopt two blade of separation, through bolt.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A floating cutter head comprises a cutter rod (2) and a cutter head (6), and is characterized in that: the cutter bar is characterized in that a first reducing pipe sleeve (1) and a second reducing pipe sleeve (3) are respectively sleeved at the upper end and the lower end of the cutter bar (2), a universal joint (4) is sleeved at the bottom end of the second reducing pipe sleeve (3), the universal joint (4) comprises a first connector (41), a first connector (42), a cross bearing (43), a second connector (44), a connecting pin (45) and a second connector (46), the outer end of the first connector (41) is fixedly connected with the second reducing pipe sleeve (3), the first connector (42) is fixedly welded at the bottom end of the first connector (41), the first connector (42) is movably connected with the second connector (44) through the cross bearing (43), the middle parts of two side wings of the first connector (42) and the second connector (44) are movably connected with the end part of the cross bearing (43) through the connecting pin (45), the welding of second connecting piece (44) bottom has second connector (46), second connector (46) bottom fixedly connected with knife rest (5), knife rest (5) bottom fixedly connected with tool bit (6).

2. A floating cutter head according to claim 1 wherein: the first reducing pipe sleeve (1) and the second reducing pipe sleeve (3) are identical in shape and size.

3. A floating cutter head according to claim 1 wherein: the first connecting piece (42) and the second connecting piece (44) are both U-shaped connecting pieces and are identical in shape and size.

4. A floating cutter head according to claim 1 wherein: the outer diameters of the first reducing pipe sleeve (1), the cutter bar (2), the second reducing pipe sleeve (3), the universal joint (4) and the cutter rest (5) are smaller than or equal to the outer diameter of the cutter head (6).

5. A floating cutter head according to claim 1 wherein: the outer diameter of the tool rest (5) is equal to the maximum outer diameter of the first reducing pipe sleeve (1).