CN201436114U

CN201436114U - Knife handle for turning conical hole

Info

Publication number: CN201436114U
Application number: CN2008202305790U
Authority: CN
Inventors: 闵运坤; 王署斌
Original assignee: Dongfeng Motor Co Ltd
Current assignee: Dongfeng Motor Co Ltd
Priority date: 2008-12-25
Filing date: 2008-12-25
Publication date: 2010-04-07
Anticipated expiration: 2018-12-25

Abstract

The utility model discloses a knife handle for turning a taper hole, which comprises a knife handle body and a boring cutter, wherein the front end of the knife handle body is spliced with a cutter shell, and a positioning key is arranged between the knife handle body and the cutter shell; the cylindrical surface of the front end of the cutter shell is connected with a baffle ring through a bearing, and an oblique guide cavity and a horizontal guide cavity which are communicated are arranged in the cutter shell; a sliding block is arranged in the oblique guide cavity, the boring cutter is fixed at the front end of the sliding block, the horizontal guide cavity is coaxial with the cutter handle body or parallel to the central shaft, a push rod is arranged in the horizontal guide cavity, the front end of the push rod is movably connected with the sliding block, and the tail end of the push rod is fixedly connected with the cutter handle body; an included angle alpha formed by the sliding surface of the inclined guide cavity and the axis of the tool holder body is the same as the taper beta of the taper hole of the processed workpiece. The utility model discloses simple structure, processingquality are excellent, machining efficiency is high, and especially adapted installs and uses in the turning equipment of the accurate bell mouth of processing.

Description

Bellmouth turning knife handle for processing

Technical field

The utility model relates to the plant equipment field, refers to a kind of bellmouth turning knife handle for processing particularly.

Background technology

Turning processing is generally carried out with lathe, and its working method is, lathe tool is fixed on the knife rest, and workpiece to be machined rotates around the shaft, is lathed needed shape by lathe tool.Adopt this processing mode to hole on workpiece to be machined, machining accuracy is very low.At present, carry out hole class processing on workpiece, generally adopt horizontal machine tool, this process equipment workpiece to be machined maintains static on horizontal Machining centers, and cutter is installed on the machine tool chief axis, around main axis rotation, at the workpiece to be machined surface drilling; Can be by regulating the distance between cutter and the machine tool chief axis axis, to adapt to the requirement in different apertures.But adopt horizontal machine tool can only process common circular hole, can't process bellmouth.At present generally all will be by special installation for the processing of bellmouth, not only working (machining) efficiency is low, and processing cost is very high.

Summary of the invention

The purpose of this utility model is exactly to solve the deficiency that the above-mentioned background technology exists, and proposes a kind of simple in structure, cost is low, working (machining) efficiency is high and crudy is good bellmouth turning knife handle for processing.

At above-mentioned purpose, the bellmouth turning knife handle for processing that the utility model is designed comprises handle of a knife body and boring cutter, and described handle of a knife body front end is plugged with the cutter housing, is provided with positioning key between the two and circumferentially locatees; The periphery of described cutter housing front end is connected with baffle ring by bearing, is provided with the oblique directed cavity and the horizontally-guided chamber that communicate in the cutter housing; Be placed with slide block in the described oblique directed cavity, boring cutter is fixed on the front end of slide block, and described horizontally-guided chamber is coaxial or central axes with the handle of a knife body, is placed with push rod in it, and the front end of said push rod and slide block flexibly connect, and end is fixedlyed connected with the handle of a knife body; The sliding surface of described oblique directed cavity is identical with the taper hole tapering β of handle of a knife body axis angle α and workpiece to be machined.

Further, be provided with the resetting-mechanism of replying initial position for slide block between described cutter housing and the handle of a knife body.The preferred back-moving spring of described resetting-mechanism.

Further, described push rod and slide block movable connection method are that axis hole is pegged graft, and described slide block is provided with pin-and-hole, and described push rod front end is set with the bearing pin that cooperates with its grafting.

In such scheme, the ratio between the minimum slit d between described push rod and the slide block and the inside and outside radius of circle difference of workpiece to be machined taper hole is more than or equal to sec α.

In such scheme, described horizontally-guided chamber is coaxial with the handle of a knife body.

Advantage of the present utility model is: the principle that adopts resultant motion, oblique directed cavity and the horizontally-guided chamber that communicates is set in the cutter housing, and be provided with corresponding slide block and push rod, in process, oblique feeding will be converted to the axial feed of cutter to, thereby the processing of bellmouth can be carried out easily for boring cutter, not only simple in structure, processing cost is low, and the working (machining) efficiency height, loss is low, durability degree is high; Simultaneously, the utility model makes that the processing of bellmouth is able to realize that with the turning processing mode machining accuracy and crudy significantly improve, and the surface smoothness of the bellmouth that the employing existing equipment processes is Ra3.2, and adopting this device can reach Ra1.6, crudy has improved nearly 50%.

Description of drawings

Fig. 1 is a bellmouth turning knife handle for processing structural representation.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

Bellmouth turning knife handle for processing as shown in the drawing comprises handle of a knife body 1, and described handle of a knife body 1 front end is plugged with cutter housing 2, is provided with key between the two, is used for the two was upwards located in week.Particularly, the two can adopt inserts the tube inserting mode and links to each other, and on the described slotting tube key is set, and on the handle of a knife body 1 keyway is set, insert tube insert handle of a knife body 1 back key and keyway just contraposition cooperates, handle of a knife body 1 and cutter housing 2 are fixed circumferential.Described cutter housing 2 front ends are connected with baffle ring 3 by bearing, are provided with the oblique directed cavity 5 and the horizontally-guided chamber 6 that communicate in the cutter housing 2, and described baffle ring 3 is used for cutter housing 2 axial limitings.Be placed with slide block 7 in the described oblique directed cavity 5, boring cutter 4 is fixed on the front end of slide block 7, is placed with push rod 8 in the described horizontally-guided chamber 6, and the front end of said push rod 8 and slide block 7 flexibly connect, and end is fixedlyed connected with handle of a knife body 1.Horizontally-guided chamber 6 and handle of a knife body 1 coaxial or the two central axes are set in the cutter housing 2.Such setting is in order to make the traffic direction and the handle of a knife body 1 of push rod 8 be consistent, reduce vibrations in the precision that guarantees processing.Preferably the two coaxial set-up mode can guarantee that like this vibrations are minimum in process.

Described slide block 7 is a strip, can slide at the sliding surface of the oblique directed cavity 5 in the promotion lower edge of push rod 8.Described slide block 7 can be connected in the mode of pegging graft with push rod 8, on described slide block 7 pin-and-hole is set, and push rod 8 front ends fixedly install the bearing pin of pegging graft and cooperating with pin-and-hole, and bearing pin is inserted in the pin-and-hole.Push rod 8 is when axially advancing, and the bearing pin of its front end promotes slide block 7 and does oblique movement; Simultaneously, bearing pin is done feed motion along the pin-and-hole direction, will endwisely slip to be decomposed into two-way slip.The sliding surface of described oblique directed cavity 5 is identical with the taper hole tapering β of handle of a knife body 1 axis angle α and workpiece to be machined 9.Can guarantee that like this in process, the bellmouth inner surface of the running orbit of boring cutter 4 and workpiece to be machined 9 can be fitted mutually, the size of the bellmouth that processes and tapering all can meet the requirements.

In order to make after process is finished, each parts of the handle of a knife inside that the utility model is designed can automatically reply initial position, so that process once more, be provided with the resetting-mechanism 10 of replying initial position for slide block 7 between described cutter housing 2 and the handle of a knife body 1.After process was finished, cutter was return, and resetting-mechanism 10 can push away handle of a knife body 1 with cutter housing 2, is returned to initial position, and at this moment, push rod 8 pulling slide blocks 7 reset, and the boring cutter 4 that is assemblied on the slide block 7 is got back to initial position.Described resetting-mechanism can be back-moving spring, shell fragment or corresponding elastic mechanism.

The course of work of the present utility model is as follows:

Adding man-hour, handle of a knife moves as axial feed with main shaft, and when baffle ring 3 touched the end face of workpiece to be machined 9, cutter housing 2 moved axially limited, only rotate, and handle of a knife body 1 continued to move forward; Handle of a knife body 1 drives push rod 8 in horizontally-guided chamber 6 slides forwards, promotes the sliding surface slip of slide block 7 along oblique directed cavity 5; The boring cutter 4 that is loaded on the slide block 7 rotates cutting with the rotation of cutter housing 2 thereupon when doing oblique slip, under the synthesis of two kinds of motions, go out bellmouth in workpiece to be machined 9 surperficial turning.Because the sliding surface of described oblique directed cavity 5 is identical with the taper hole tapering β of handle of a knife body 1 axis angle α and workpiece to be machined 9, thereby the size of the bellmouth that processes and tapering all can meet the requirements.

After process finished, handle of a knife was axially return mobile with main shaft, and when baffle ring 3 was recessed the end face of workpiece to be machined 9, resetting-mechanism 10 promoted cutter housing 2 returns and puts; Push rod 8 drives drop-down movable slider 7 at handle of a knife body 1 and resets, and the boring cutter 4 that is assemblied on the slide block 7 is got back to initial position.

Claims

1. a bellmouth turning knife handle for processing comprises handle of a knife body (1) and boring cutter (4), it is characterized in that: described handle of a knife body (1) front end is plugged with cutter housing (2), is provided with positioning key between the two and circumferentially locatees; The periphery of described cutter housing (2) front end is connected with baffle ring (3) by bearing, is provided with the oblique directed cavity (5) and horizontally-guided chamber (6) that communicate in the cutter housing (2); Be placed with slide block (7) in the described oblique directed cavity (5), boring cutter (4) is fixed on the front end of slide block (7), described horizontally-guided chamber (6) and the coaxial or central axes of handle of a knife body (1), be placed with push rod (8) in it, the front end of said push rod (8) and slide block (7) flexibly connect, and end is fixedlyed connected with handle of a knife body (1); The sliding surface of described oblique directed cavity (5) is identical with the taper hole tapering β of handle of a knife body (1) axis angle α and workpiece to be machined (9).

2. according to the described bellmouth turning of claim 1 knife handle for processing, it is characterized in that: be provided with the resetting-mechanism (10) of replying initial position for slide block (7) between described cutter housing (2) and the handle of a knife body (1).

3. according to the described bellmouth turning of claim 2 knife handle for processing, it is characterized in that: described resetting-mechanism (10) is a back-moving spring.

4. according to claim 1 or 2 described bellmouth turning knife handle for processing, it is characterized in that: described push rod (8) is that axis hole is pegged graft with slide block (7) movable connection method, described slide block (7) is provided with pin-and-hole, and described push rod (8) front end is set with the bearing pin that cooperates with its grafting.

5. according to the described bellmouth turning of claim 4 knife handle for processing, it is characterized in that: the ratio between the inside and outside radius of circle difference of minimum slit d between described push rod (8) and the slide block (7) and workpiece to be machined (9) taper hole is more than or equal to sec α.

6. according to claim 1 or 2 described bellmouth turning knife handle for processing, it is characterized in that: described horizontally-guided chamber (6) is coaxial with handle of a knife body (1).

7. according to the described bellmouth turning of claim 4 knife handle for processing, it is characterized in that: described horizontally-guided chamber (6) is coaxial with handle of a knife body (1).