CN2723081Y

CN2723081Y - Combined forming cutter for step hole processing

Info

Publication number: CN2723081Y
Application number: CN 200420061182
Authority: CN
Inventors: 尹明善; 兰民; 黄承浩
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2004-09-08
Filing date: 2004-09-08
Publication date: 2005-09-07
Anticipated expiration: 2014-09-08

Abstract

The utility model provides a combined forming cutter for step hole processing, comprising a knife rod (1) and a clamping head (8) which is arranged at the tail of the knife rod (1). The head portion of the knife rod (1) is a guiding head (6); the rear portion of the guiding head (6) of the knife rod (1) is successively provided with a rough processing section (5), a refined processing section (4), and a forming processing section (2) which are uniformly distributed with four corresponding hard alloy knives in the rotary direction; the forming processing section (2) extends with a chamfering forming knife blade (3) along the radial direction; the chamfering forming knife blade (3) is fixedly arranged on the knife rod (1) through bolts; the external periphery of the front end surface of the forming processing section (2) is uniformly distributed with two cutting knives (10) and two extruding knives (11), and the cutting knives (10) and the extruding knives (11) are alternately arranged. The utility model can make that the processing of the step hole on the complicated parts can be once finished on a machine tool, and the combined forming cutter for the step hole processing has high processing precision, improved production efficiency, and reduced cost.

Description

A kind of stepped hole processing combination forming cutter

Technical field

The utility model relates to a kind of machining tool, especially a kind of combination forming cutter that is used for processing step hole.

Background technology

The traditional diamond-making technique of stepped hole generally will pass through operations such as thick brill, hinge, extruding, heavy boring, right boring (starting the processing of axle installing hole as the right lid of motorcycle engine), thick brill generally is to remove blank than the overlap on the aperture, burr etc., hinge is that this hole is enlarged (being reaming), extruding is that this hole is accurately processed, make this aperture, hole in the margin of tolerance, and make the inner surface fineness in hole reach requirement; Heavy boring is that hole bigger in the stepped hole is enlarged (being reaming), right boring is that this is accurately processed than macropore, make this aperture, hole in the margin of tolerance, make the inner surface fineness in hole reach requirement, finish this formation simultaneously than the definite and chamfering of macropore height.In this processing method, generally need five machine tools just can finish whole processing, uniformity is poor between the different machine tools, and that processing is got up is not only time-consuming, efficient is low, and crudies such as the size in the axiality in hole, hole, surface smoothness can not get guaranteeing.

The utility model content

The purpose of this utility model provide a kind of can be on a machine tool once property finish processing, and can significantly improve the stepped hole processing combination forming cutter of the crudies such as size, surface smoothness in axiality, the hole in hole.

Stepped hole processing combination forming cutter described in the utility model comprises knife bar and is positioned at the clamping head of knife bar afterbody, the head of knife bar is a guide head, be disposed with roughing section, finishing workshop section and shaping processing sections behind the guide head of knife bar, they all are evenly equipped with four corresponding carbide cutter tools at gyratory directions; Extended radially chamfering shaping blade on the described shaping processing sections, chamfering shaping blade is by being bolted on the knife bar; The outward flange of described shaping processing sections front end face is evenly equipped with two bites and two extruding cuttves, bite and the alternate setting of extruding cutter.

Roughing section in the utility model is used to remove blank than the overlap on the aperture, burr etc.; Finishing workshop section is used for stepped hole is enlarged (being reaming) than aperture, and makes the surface smoothness in this hole reach requirement; The shaping processing sections is used for stepped hole is processed than macropore, four wherein circumferential carbide cutter tools guarantee that the surface smoothness in pore size and hole reaches requirement, chamfering shaping blade is used to guarantee that shoulder height and big hole end surface chamfering form, and outer peripheral bite of front end face and extruding cutter are used for the processing to step surface.

The utility model has the advantages that: can make stepped hole on the complex parts on a machine tool once property finish processing, the machining accuracy height has improved production efficiency, has reduced cost.

Description of drawings

Fig. 1 is a front view of the present utility model;

Fig. 2 is that the D of Fig. 1 is to view;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 1;

Fig. 5 is the C-C cutaway view of Fig. 1;

The stepped hole schematic diagram that Fig. 6 is in the present embodiment to be processed.

The specific embodiment

Extremely shown in Figure 6 as Fig. 1, the utility model is made up of knife bar 1 and the clamping head 8 that is positioned at knife bar 1 afterbody, the head of knife bar 1 is a guide head 6, be disposed with roughing section 5, finishing workshop section 4 and shaping processing sections 2 behind the guide head 6 of knife bar 1, they all are evenly equipped with four corresponding carbide cutter tools 9 at gyratory directions; Extended radially chamfering shaping blade 3 on the described shaping processing sections 2, chamfering shaping blade 3 is fixed on the knife bar 1 by bolt 7; The outward flange of described shaping processing sections 2 front end faces is evenly equipped with two bites 10 and two extruding cuttves 11, bite 10 and the 11 alternate settings of extruding cutter.

The front portion of the workshop section of described finishing shown in Fig. 14 also is provided with a bit of semifinishing section 4a, also the edge circumferentially is evenly distributed with four corresponding carbide cutter tools 9 on this section, thereby make in the stepped hole in the end be shaped than aperture before many one semifinishing operations, to improve the surface smoothness in hole.

Starting the axle installing hole with the right lid of processing motorcycle engine is example, clamping head 8 is installed on the lathe, blank is covered on workbench in the processed motorcycle engine right side, start lathe, the head of knife bar 1 is stretched in the stepped hole of be shaped substantially (cast blank), make the guide head 6 of knife bar 1 just in time aim in the stepped hole center than aperture 12, knife bar 1 slowly moves down, roughing section 5 will be somebody's turn to do the overlap than aperture 12 earlier, burrs etc. machine away, the 4a of semifinishing section then tentatively enlarges (being reaming) to this than aperture 12, knife bar 1 continues to move down, finishing workshop section 4 finishes in the stepped hole than the processing of aperture 12, makes its aperture and surface smoothness reach requirement; Be shaped simultaneously and process than macropore 13 in 2 pairs of stepped holes of processing sections, make its aperture and surface smoothness reach requirement, chamfering shaping blade 3 on the shaping processing sections 2 is used to guarantee shoulder height h and forms than macropore 13 end face chamferings that outer peripheral bite 10 of front end face and extruding cutter 11 are used for the processing to step surface.

Claims

1, a kind of stepped hole processing combination forming cutter, comprise knife bar (1) and be positioned at the clamping head (8) of knife bar (1) afterbody, the head of knife bar (1) is guide head (6), it is characterized in that: A, be disposed with roughing section (5), finishing workshop section (4) and shaping processing sections (2) behind the guide head (6) of knife bar (1), they all are evenly equipped with four corresponding carbide cutter tools (9) at gyratory directions; Extended radially chamfering shaping blade (3) on B, the described shaping processing sections (2), chamfering shaping blade (3) is fixed on the knife bar (1) by bolt (7); The outward flange of C, described shaping processing sections (2) front end face is evenly equipped with two bites (10) and two extruding cuttves (11), bite (10) and the alternate setting of extruding cutter (11).

2. a kind of stepped hole processing combination forming cutter according to claim 1, it is characterized in that: the front portion of described finishing workshop section (4) also is provided with a bit of semifinishing section (4a), and also the edge circumferentially is evenly distributed with four corresponding carbide cutter tools (9) on this section.