CN201124260Y

CN201124260Y - Molding tool bit for colliery chain wheel nest

Info

Publication number: CN201124260Y
Application number: CNU2007203110719U
Authority: CN
Inventors: 王振华; 李再苒; 王占富; 李奎冰
Original assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Current assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Priority date: 2007-12-20
Filing date: 2007-12-20
Publication date: 2008-10-01
Anticipated expiration: 2017-12-20

Abstract

The utility model relates to the technology field of cutters of machine tools, in particular to a cutter for processing chain wheel and chain nest for coal mine. Conventionally, chain wheel and chain nest are processed by an arc milling cutter on a boring and milling machine or on a special machine tool, the processing accuracy and the efficiency are low and the labor intensity is high. As for numerical control machine tool, no proper processing cutter is available. The processing cutter of the utility model consists of a cutter body and a handle which are connected with each other through screws and two keys; a keyway and a positioning hole are formed on the cutter body; the two keys on the handle are respectively used for fixing the cutter body on the handle through two fastening screws; screws are used for axially fixing the cutter body on the handle; and rivets are connected with the spindle of the machine tool. The cutter body has a diameter of Phi 164 mm, an arc diameter of R 24, a helical angle of 13 DEG to 17 DEG, the number of teeth of 11 to 13, and a length of 65 to 75 mm. The transition size of an axial positioning step on the right side of the joint of the handle and the cutter is Phi 110 to Phi 130 mm.

Description

Colliery sprocket chain nest processing and forming cutter

Technical field:

The utility model relates to the machine tool technical field, a kind of specifically colliery sprocket chain nest processing and forming cutter.

Background technology:

Traditional colliery is to adopt common arc cutter processing on the boring and milling machine or on special purpose machine tool with the processing of sprocket chain nest, the precision of its processing and efficient are all very low, and working strength of workers is big, and adopts Digit Control Machine Tool processing, does not then have the processing and forming cutter that is suitable for.

Summary of the invention:

The purpose of this utility model provides the molding cutter of a kind of colliery with the processing of sprocket chain nest, and it can pass through the direct machine-shaping of one-time programming on Digit Control Machine Tool, improved machining accuracy and operating efficiency, has reduced working strength of workers.

The technical solution of the utility model is: process tool is made up of cutter hub and handle of a knife, and cutter hub and handle of a knife form by joint bolt, two key and trip bolt connection.Have keyway and locating hole on the cutter hub, the two keys on the handle of a knife are fixed on cutter hub on the handle of a knife with two trip bolts respectively, make cutter hub circumferentially be fixed on the handle of a knife; Joint bolt is axially fixed in cutter hub on the handle of a knife, and blind rivet and machine tool chief axis link.The cutter hub diameter is Φ 164mm, arc radius R24, and the helical angle scope is taken at 13 °～17 °, cutter hub length range 65～75mm, 11～13 of the numbers of teeth, the transition of the axial location step on handle of a knife and cutter hub coupling part right side is of a size of Φ 110mm～Φ 130mm.

This cutter hub has also designed: cutter hub side capacity chip slot depth is 15mm, and anterior angle is 10 °, and relief angle is 12 °, and the chip pocket angle is 60 ° (Fig. 5); Leading section chip pocket angle is 45 °, and anterior angle is 6 °, and relief angle is 12 ° (Fig. 6), and chip pocket bottom arc radius is R5, and the cylinder ligament is not more than 0.1mm.

The utility model is applied to the sprocket chain nest processing that diameter chain is Φ 48mm, and the cutter hub material adopts whole high-speed steel (W18Cr4V), and heat treatment hardness is HRC255～285.Cutter rigidity when having guaranteed the low-speed heave-load cutting has enough intensity, enough chip space, assurance chip removals to reach the more number of times of refacing smoothly; Simultaneously, in order to improve the roughness of finished surface, considered suitably to reduce the vibration in axial force and the working angles again, designed moderate helical angle, reduced cutting resistance, the row of making cuts smooth and easy; According to the depth of the chain nest that will process, guaranteeing that cutter hub can satisfy under the situation of processing request, make it short as far as possible, improved the cutter rigidity on the one hand, also reduced the manufacturing cost of cutter on the other hand, the cutter end has processed locating hole and keyway, to be used for the location and to transmit moment of torsion.

The utility model has the advantages that and can use on Digit Control Machine Tool, improved machining accuracy and operating efficiency, reduced working strength of workers, cutter hub and handle of a knife all have interchangeability.

Description of drawings:

Fig. 1: be structural representation of the present utility model;

Fig. 2: be cutter hub front view of the present utility model

Fig. 3: be cutter hub left view of the present utility model;

Fig. 4: be cutter hub profile of the present utility model;

Fig. 5: be the C-C profile of Fig. 2;

Fig. 6: be the B-B profile of Fig. 2;

Fig. 7: be handle of a knife figure of the present utility model.

The specific embodiment:

Among Fig. 1: 1. cutter hub, 2. handle of a knife, 3. blind rivet, 4. trip bolt, 5. pair key, 6. joint bolt, the size of Φ, H, R is all in mm among the figure.

From Fig. 1,2,3,4,5,6,7 as can be known, the colliery is made up of cutter hub 1 and handle of a knife 2 with sprocket chain nest process tool, earlier handle of a knife 2 is inserted in the locating hole d of cutter hub during installation, on the cutter hub 1 on keyway a and the handle of a knife 2 corresponding two keyways align, then two keys 5 are put into keyway, fixing with trip bolt 4 again, axially go up and connect cutter hub and handle of a knife fastening by joint bolt 6, after treating that cutter hub and handle of a knife assemble fully, can be 7:24 taper shank c pack in the machine tool chief axis (two circumferential keyway b and machine tool chief axis corresponding keys on the handle of a knife 2 align) with tapering, cutter and machine spindle realize to connecting blind rivet 3, like this can machining chain endless chain nest, and cutter hub and handle of a knife all have interchangeability.

Cutter hub length is 70mm, and the helical angle scope is taken at 15 °, 11 of the numbers of teeth, the transition of the axial location step on handle of a knife and cutter head coupling part right side is of a size of Φ 110～Φ 130, cutter hub side capacity chip slot depth is 15, and anterior angle is 10 °, and relief angle is 12 °, the chip pocket angle is 60 °, leading section chip pocket angle is 45 °, and anterior angle is 6 °, and relief angle is 12 °, chip pocket bottom arc radius is R5, and the cylinder ligament is not more than 0.1mm.

Claims

1, a kind of colliery sprocket chain nest processing and forming cutter, form by cutter hub (1) and handle of a knife (2), it is characterized in that: cutter hub (1) and handle of a knife (2) form by joint bolt (6), two key (5), trip bolt (4) connection, cutter hub has keyway and locating hole on (1), two keys (5) on the handle of a knife (2) use two trip bolts (4) to be fixed on the handle of a knife respectively, and blind rivet (3) is connected with machine tool chief axis; The cutter hub diameter is Φ 164mm, arc radius R24, and the helical angle scope is taken at 13 °～17 °, cutter hub length range 65～75mm, 11～13 of the numbers of teeth, the transition of the axial location step on handle of a knife and cutter hub coupling part right side is of a size of Φ 110mm～Φ 130mm.

2, a kind of colliery according to claim 1 is characterized by: cutter hub length 70 with sprocket chain nest processing and forming cutter; 15 ° of helical angles, 11 of the numbers of teeth, the transition of the axial location step on handle of a knife and right side, cutter head coupling part is of a size of Φ 120mm.

3, a kind of colliery according to claim 1 sprocket chain nest processing and forming cutter, it is characterized by: cutter hub side capacity chip slot depth is 15, and anterior angle is 10 °, and relief angle is 12 °, and the chip pocket angle is 60 °; Leading section chip pocket angle is 45 °, and anterior angle is 6 °, and relief angle is 12 °, and chip pocket bottom arc radius is R5, and the cylinder ligament is not more than 0.1mm.