CN201609770U

CN201609770U - Big-hole back spot facing cutter

Info

Publication number: CN201609770U
Application number: CN200920286069XU
Authority: CN
Inventors: 吴永旭; 张永泉; 张君辉; 尹金玲
Original assignee: Shanghai East Pump Group Co Ltd
Current assignee: Shanghai East Pump Group Co Ltd
Priority date: 2009-12-23
Filing date: 2009-12-23
Publication date: 2010-10-20
Anticipated expiration: 2019-12-23

Abstract

A big-hole back spot facing cutter mainly comprises a cutter arbor, a handle, a connecting rod and blades, wherein, a circular groove is formed at the bottom of the cutter arbor along the central axis; two square through holes are formed on the upper and the lower sides of the circular groove; and each blade takes the shape of an inverted trapezoid; and a strip-shaped groove is formed on one side of each blade. During the mounting of the whole set of the cutter, the connecting rod is mounted in the circular groove in the cutter arbor; the handle is movably mounted in the upper square through hole through a pin shaft, and is connected with the top of the connecting rod through the pin shaft; the blades are symmetrically and movably mounted in the lower square through hole through pin shafts; the grooves are connected in a matched manner to form a slideway; and the blades are connected with the bottom of the connecting rod through the pin shafts in sliding connection with the interior of the slideway. The utility model has the advantages of simple structure and convenient use, and can control the rotation, the expansion and the contraction of the blades in the cutter arbor by adjusting the position of the handle cushily, so as to realize the function of continuous facing under the condition that a lathe is not stopped.

Description

The flat cutter of the anti-ream of a kind of macropore

Technical field

The utility model relates to counter boring device, particularly be a kind of flat cutter of the anti-ream of macropore that can easily process the flange back side.

Background technology

Often run into the part that requires ream flat and so at flange back side place aborning, because the restriction of structure, cutter can't directly positively be processed, and needs the design specialized cutter.As shown in Figure 1, for a kind of conventional tool of present employing is carried out one of method for processing, this method is the circular knife bar that cutter head is installed by a root bottom part, carries out for the ream at 1 place, part processing plane flat.During use, need earlier knife bar 21 clampings on the drilling machine chuck, to put in the hole in piece part that needs processing, again cutter head 22 is installed in knife bar 21 bottoms, start drilling machine, and broaching tool bar 21 upwards.After the flat processing of the ream of finishing a part, need cutter head 21 is disassembled, repeat above-mentioned processing method then and could continue processing.This cutter is because its very loaded down with trivial details when using, and makes to add man-hour in that the part ream is flat, not only strengthened the difficulty of processing, also greatly reduces the efficient of processing, thereby improved production cost.

The utility model content

Technical problem to be solved in the utility model is to provide the anti-ream of a kind of macropore flat cutter, the problem of the inconvenience when having the existing use of the flat cutter of the anti-ream of macropore now to solve.

To achieve these goals, the utility model is to realize by the following technical solutions:

The flat cutter of the anti-ream of a kind of macropore mainly comprises knife bar, handle, connecting rod and blade composition, is provided with a circular groove in described knife bar bottom along the central axis position, offers upper and lower two square through holes in the both sides up and down of circular groove; Described blade is the identical inverted trapezoidal structure blades of two chip architectures, and the side of described blade one side is provided with a strip groove, and the convex structure design of being convenient to blade rotation is adopted at the handing-over position on described groove lower end side and base; Described connecting rod is installed among the circular groove of knife bar inside; One end of described handle is movably arranged in the square through hole by bearing pin, and links to each other with the connecting rod top by this bearing pin; Described blade is by in the square through hole under being movably connected in of bearing pin symmetry, and makes described groove be joined together to form a slideway, and described blade links to each other with the connecting rod bottom by the bearing pin that is slidingly connected in the slideway.

The utility model is simple in structure, easy to use, can control the flexible of blade by the handle that is arranged on the knife bar upper end easily, be implemented in and use the utility model to carry out that anti-ream is flat to add man-hour, can under the situation of not stopping, carry out continuous processing, improve the efficient of processing.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is the flat cutter figure of a kind of traditional ream.

Fig. 2 is the structural representation of the utility model blade rotation.

Fig. 3 is the structural representation of connecting rod in the utility model.

Fig. 4 is the cutaway view at the utility model A-A place.

Fig. 5 is the structural representation of blade in the utility model.

Fig. 6 is the postrotational structural representation of the utility model blade.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.

The utility model is primarily aimed at the flat cutter of existing anti-ream in use, and the use step that it is loaded down with trivial details and need repeat the trouble of stopping the dismounting blade to be brought when changing processing parts improves on the basis of traditional flat cutter of anti-ream.

As shown in Figure 2, the utility model is the structural representation of the flat cutter of the anti-ream of a kind of macropore, mainly comprises knife bar 31, bearing pin, connecting rod 32, handle 33, blade 34, supports bearing pin 36 parts such as grade and forms.Wherein, owing to consider that the present invention is a kind of lathe cutter, for this reason in the design of knife bar 31, its the first half can be made into the shape that the main shaft of lathe matching used with it adapts, the latter half then is made into conventional cylindrical structural, and begin from the bottom to offer a circular groove 313 along axis direction in its latter half, at circular groove square through hole 311 and square through hole 312 down on the both sides turnning and milling goes out about in the of 313.So connecting rod 32 just can be assembled in the inside of knife bar 31 by circular groove 313, and install for the ease of cutter, need turnning and milling go out middle the groove milling 321 that is used for being convenient to install handle 33 together in connecting rod 32 upper ends, turnning and milling one-tenth in lower end is convenient to the flat-shaped structure (as shown in Figure 3) that is connected with blade 34.And handle 33 when mounted, can be movably connected in the groove milling 321 that is arranged in the square through hole 311 by bearing pin 351 earlier, and also need install a support bearing pin 36 that is used to support its work in the one side; As Fig. 4 and shown in Figure 5, blade 34 can be chosen the blade of the identical inverted trapezoidal structure of two chip architectures, on the side of blade 34 1 sides, need be provided with a strip groove 341, the convex structure of being convenient to blade 34 rotations is adopted in junction on groove 341 lower end sides and base, and a through hole 342 that is used to connect bearing pin 353 need be set also, two blades 34 when mounted, just can be by in the square through hole under being movably connected in of bearing pin 353 symmetries 312, and make the chute that is joined together to form that two grooves 341 can cooperate, and link to each other with the bottom of connecting rod 32 by the bearing pin 352 that is slidingly connected in this chute.

As shown in Figure 6, using method of the present utility model and operation principle are: in the square through hole 311 handle 33 and connecting rod 32 usefulness bearing pins 351 are linked together up earlier, form one group of linkage, again below connecting rod 32 and two blade 34 usefulness bearing pins 352 are linked together in the square three-way groove 312, form another group linkage.During use handle 33 is upwards pushed away, make connecting rod 32 begin to move down by the effect of supporting bearing pin 36 and bearing pin 351, connecting rod 32 is put a downward pressure by bearing pin 352 to good use to blade 34, blade 34 bearing pin 353 of just having mercy on begins to rotate, and makes blade 34 be recovered to following square through hole 312 inside of knife bar 31.At this moment just can pass the hole with the processing of knife bar 31 from workpiece, and need not the dismantlement work that blade 34 is carried out trouble; Then to pressing down handle 33, by the connecting rod 32 that makes progress blade 34 rich bearing pins 353 are rotated in the opposite direction, blade 34 just can stretch out from knife bar 31, and the following square through hole 312 on the lower end of blade 34 and the knife bar 31 contacts, and has carried blade 34 and has added the cutting force that produce man-hour.After the anti-spot facing completion of processing of macropore, just can upwards mention handle 33 once more, drive blade 34 by connecting rod 32 and be recovered to following square through hole 312 inside on the cutter knife bar 31 again, knife bar 31 just can withdraw from from the workpiece machining hole, repeat above-mentioned action, can carry out the flat processing of anti-ream of next workpiece machining hole.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. flat cutter of the anti-ream of macropore, mainly comprise knife bar, handle, connecting rod and blade composition, it is characterized in that, be provided with a circular groove along the central axis position, offer upper and lower two square through holes in the both sides up and down of circular groove in described knife bar bottom; Described blade is the identical inverted trapezoidal structure blades of two chip architectures, and the side of described blade one side is provided with a strip groove, and the convex structure design of being convenient to blade rotation is adopted at the handing-over position on described groove lower end side and base; Described connecting rod is installed among the circular groove of knife bar inside; One end of described handle is movably arranged in the square through hole by bearing pin, and links to each other with the connecting rod top by this bearing pin; Described blade is by in the square through hole under being movably connected in of bearing pin symmetry, and makes described groove be joined together to form a slideway, and described blade links to each other with the connecting rod bottom by the bearing pin that is slidingly connected in the slideway.