CN203495254U

CN203495254U - Countersink

Info

Publication number: CN203495254U
Application number: CN201320515398.3U
Authority: CN
Inventors: 李树军
Original assignee: Tianjin Zhongda Precision Machinery Co Ltd
Current assignee: Tianjin Zhongda Precision Machinery Co Ltd
Priority date: 2013-08-21
Filing date: 2013-08-21
Publication date: 2014-03-26
Anticipated expiration: 2023-08-21

Abstract

The utility model provides a countersink which comprises a countersink bar and a countersink base connected with the countersink bar, wherein the countersink base is provided with four countersink heads; one end of the countersink bar is provided with an L-shaped key slot; the countersink base is of a hollow circular pipe; the countersink heads are embedded in the outer wall of the countersink base; the pipe wall of the countersink base is provided with a locating pin; the inner diameter of the countersink base is greater than the outer diameter of the countersink bar; the locating pin is protruded out of the interior of the hollow circular pipe of the countersink base, and the length of the locating pin is consistent with the depth of the L-shaped key slot. The countersink provided by the utility model has the beneficial effects that countersinking is performed on two ends of a through hole, the operation is more convenient, and the symmetry of two end faces is stronger; the countersink provided by the utility model has the advantages of simple structure, convenience in maintenance, low processing cost, high production efficiency and the like.

Description

Anti-countersink

Technical field

The utility model belongs to machining equipment technical field, especially relates to a kind of the both ends of the surface of through hole being carried out to the anti-countersink that ream is flat.

Background technology

In Machining Technology field, often the two ends flatness of some through holes is had to requirement, but the both ends of the surface of the through hole that existing boring or foundry engieering process can form the out-of-flatness of burr or front and back casting plane, finally may cause the connection defective tightness between part, bring potential safety hazard to the normal operation of equipment.

In order to guarantee the flatness of through hole both ends of the surface, the ream that generally adopts countersink to carry out through hole both ends of the surface is put down.But the cutter head of this type of process tool is installed inconvenient, and after installing, stability is bad, adds phenomenons such as may occurring loosening or rotation man-hour, can not guarantee like this flatness at through hole two ends and the symmetry of two ends spot-facing.

Summary of the invention

Problem to be solved in the utility model is to provide a kind of anti-countersink, and the especially applicable ream that efficiently carries out through hole both ends of the surface is put down.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of anti-countersink, comprise knife bar and the tool rest removably connecting with it, described tool rest is provided with cutter head, one end of described knife bar offers L-type keyway, the described knife bar of described L-type keyway place part is cylinder, and the vertical portion of described L-type keyway is parallel with the axis of described knife bar; Described tool rest is the cylinder of hollow, on the sidewall of described cylinder one end, be embedded with described cutter head, described cylindrical sidewall is provided with alignment pin, described tool rest is set on described knife bar, and described knife bar and described tool rest are fixed together by the horizontal component of described alignment pin and described L-type keyway.

The quantity of described cutter head is a plurality of.

The quantity of described cutter head is 4.

Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, ream is carried out at ordinary times in the two ends of through hole, and more convenient to operate, save time; The symmetry of both ends of the surface is stronger, and flatness is better; Have simple in structurely, easy to maintenance, processing cost is low, production efficiency advantages of higher.

Accompanying drawing explanation

Fig. 1 is knife bar schematic diagram of the present utility model

Fig. 2 is tool rest of the present utility model and tool bit part schematic diagram

Fig. 3 is overall structure schematic diagram of the present utility model

In figure:

1, knife bar 11, L-type keyway 2, tool rest

3, cutter head 4, alignment pin

The specific embodiment

As shown in Figure 1, Figure 2 and Figure 3, the utility model provides a kind of anti-countersink, the tool rest 2 that comprises knife bar 1 and removably connect with it, described tool rest 2 is provided with cutter head 3, one end of described knife bar 1 offers L-type keyway 11, the described knife bar 1 of described L-type keyway 11 place parts is cylinder, and the vertical portion of described L-type keyway 11 is parallel with the axis of described knife bar 1; The cylinder that described tool rest 2 is hollow, on the sidewall of described cylinder one end, be embedded with described cutter head 3, described cylindrical sidewall is provided with alignment pin 4, described tool rest 2 is set on described knife bar 1, and described knife bar 1 and described tool rest 2 are fixed together by the horizontal component of described alignment pin 4 and described L-type keyway 11.

The quantity of described cutter head 3 is a plurality of.

The quantity of described cutter head 3 is 4.

The course of work of this example: knife bar 1 is penetrated in boring, make tool rest 2 alignment pin 4 along the vertical direction of L-type keyway 11, tool rest 2 is inserted in knife bars 1, then along the horizontal direction of L-type keyway 11 rotary knife base 2 to the right, tool rest 2 is assembled on knife bar 1, can carries out the flat processing of ream.

Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.

Claims

1. an anti-countersink, comprise knife bar and the tool rest removably connecting with it, described tool rest is provided with cutter head, it is characterized in that: one end of described knife bar offers L-type keyway, the described knife bar of described L-type keyway place part is cylinder, and the vertical portion of described L-type keyway is parallel with the axis of described knife bar; Described tool rest is the cylinder of hollow, on the sidewall of described cylinder one end, be embedded with described cutter head, described cylindrical sidewall is provided with alignment pin, described tool rest is set on described knife bar, and described knife bar and described tool rest are fixed together by the horizontal component of described alignment pin and described L-type keyway.

2. anti-countersink according to claim 1, is characterized in that: the quantity of described cutter head is a plurality of.

3. anti-countersink according to claim 2, is characterized in that: the quantity of described cutter head is 4.