CN101947715B

CN101947715B - Hole-rolling knife

Info

Publication number: CN101947715B
Application number: CN 201010236585
Authority: CN
Inventors: 孙付才; 牛永春; 金绍明
Original assignee: Shandong Haoxin Machinery Co Ltd
Current assignee: Shandong Haoxin Machinery Co Ltd
Priority date: 2010-07-26
Filing date: 2010-07-26
Publication date: 2012-12-26
Anticipated expiration: 2030-07-26
Also published as: CN101947715A

Abstract

The invention discloses a hole-rolling knife which comprises a knife bar and a knife sheath. A regulating gear is screwed on the knife bar; the knife bar is provided with a locking gear which can only slide axially and is arranged above the regulating gear; the knife sheath is sleeved on the knife bar movably and arranged below the regulating gear; the upper end of the knife sheath is provided with a convex shoulder; a plurality of conical rollers which are embedded on the knife sheath and can slide along the radial direction of the knife sheath are annularly distributed at the lower end of the knife sheath; an included angle between the axial lead of each conical roller and the axial lead of the knife bar is the same with the self conicity of each conical roller; the knife bar is provided with a conical surface in contact with the conical rollers; a regulating sleeve is arranged outside the regulating gear and the locking gear; the inner surface of the regulating sleeve is provided with a locking tooth which can be engaged with the locking gear and a regulating tooth which can be engaged with the regulating gear; and a spring with two ends respectively pressing the convex shoulder and the regulating sleeve is externally sleeved on the knife sheath. The hole-rolling knife with the structure has the advantages of simple structure, convenient use, high surface smoothness of inner holes, high compactability of surface textures and capability of improving surface pressure bearing capacity of the inner holes.

Description

Roll the hole cutter

Technical field

The present invention relates to the cutter of roll extrusion circular hole hole wall.

Background technology

Dead eye on the ironcasting generally obtains through the processing of lathe and boring machine; Because its precision and surface roughness are had relatively high expectations; Existing processing mode not only is difficult to guarantee its roughness requirement, and through after the Tool in Cutting processing, dense structure's property on dead eye surface also is destroyed.For example: the roughness drawing requirement in automotive hub two bearings hole is very strict, and its roughness of bearing mounting hole of coming out through machined into can not satisfy drawing requirement.During the automobile load; Bearing outer ring carries out the roll extrusion effect equally to dead eye, because dense structure's property on dead eye surface is low, bearing capacity is poor; Cause the hub bearing hole under long-term roll extrusion effect; Its size can strengthen gradually, and bearing outer ring is prone to rotate in dead eye, causes to occur abnormal sound in the vehicle traveling process.

Summary of the invention

The technical problem that the present invention will solve is to above-mentioned defective, provide a kind of can improve inner bore surface roughness and dense structure's property roll the hole cutter.

For solving the problems of the technologies described above; What the invention provides a kind of following structure rolls the hole cutter; Its design feature is to comprise knife bar and broach shell, is bolted with adjusting gear on the knife bar, and the lock gear that only can endwisely slip and be positioned at the adjusting gear top is housed on the knife bar; The broach shell kink is on the knife bar and be positioned at below the adjusting gear; The upper end of broach shell is provided with convex shoulder, the bottom of broach shell be periphery be installed in a plurality of on the broach shell can be along the coniform roller that radially slides of broach shell, the axial line of each coniform roller is identical with himself tapering with the angle of knife bar axial line; Knife bar is provided with the taper seat that contacts with the surface of a plurality of coniform rollers; Adjusting gear and lock gear outside are provided with regulating sleeve, the regulating sleeve inner surface be provided with can with the locking teeth of lock gear engagement with can with the regulating tooth of adjusting gear engagement, the outer two ends spring of roof pressure on convex shoulder and regulating sleeve respectively that be with on the broach shell.

Be provided with thrust bearing between said broach shell and the adjusting gear.

Said regulating sleeve is made up of with following body the upper sleeve body that is screwed onto together.

The said outer surface of body down is provided with annular knurl.

The present invention is used for the hole wall of the endoporus that obtains through cutting way is carried out fine finishining, will reserve the roll extrusion surplus during cut.It is following that said structure rolls the use of hole cutter: the upper end clamping that will roll hole cutter knife bar is on radial drill; The workpiece that processes endoporus is installed on the workbench of radial drill; Start radial drill, the position of adjustment rocking arm and main spindle box makes and rolls the hole cutter and aim at and treat that broach shell that hole rolling also will roll the hole cutter is pressed into gradually and treat hole rolling; Rotate through a plurality of coniform rollers of frictional force drives in the knife bar rotation process, coniform roller exposes the outer part cylinder of broach shell just can realize the roll extrusion to the endoporus hole wall.

The invention has the advantages that simple in structure, easy to use, the beneficial effect that can bring that bore area is highly polished, surface texture compactness is high and can improves the bore area bearing capacity.

Description of drawings

Do further to specify below in conjunction with the accompanying drawing specific embodiments of the invention:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the cutaway view along A-A line among Fig. 1;

Fig. 3 is the cutaway view along B-B line among Fig. 1.

The specific embodiment

Like Fig. 1, Fig. 2 and shown in Figure 3; Roll the hole cutter and comprise knife bar 1 and broach shell 2; The intermediate section of knife bar 1 is provided with external screw thread 12, and knife bar 1 is bolted with adjusting gear 3 through external screw thread 12, and adjusting gear 3 tops are provided with and contact with its upper surface and lock gear 4 in axial sliding only; Lock gear 4 through be fixed in its endoporus feather key 13 be located at knife bar 1 on the cooperating of chute 14, realize that lock gear 4 only can endwisely slipping along knife bar 1.Broach shell 2 kinks are on knife bar 1 and the two concentric setting, and the implication of kink is that broach shell 2 is rotatable slidably, is provided with thrust bearing 11 between broach shell 2 and the adjusting gear 3.The upper end of broach shell 2 is provided with convex shoulder 5; Be equipped with a plurality of roller installing ports 15 on the outer surface of broach shell 2 near broach shell 2 lower ends and perforation broach shell 2 inside and outside surfaces; All be installed with coniform roller 6 in each roller installing port 15, the radially sliding of the broach shell 2 that coniform roller 6 can the edge in roller installing port 15.The length direction of roller installing port is axial consistent with broach shell 2; The width of roller installing port becomes big from the outer surface of broach shell 2 to inner surface gradually; The length of roller installing port is corresponding with the length of coniform roller 6; The width dimensions of roller installing port exposes the inner surface that the outer surface of broach shell 2, most of cylinder expose broach shell 2 with the fraction cylinder of coniform roller 6 and is advisable; That is to say that coniform roller 6 is installed in the roller installing port from broach shell 2 inner chambers, coniform roller 6 can change coniform roller 6 and exposes what of broach shell 2 outer surfaces through radially sliding; But coniform roller 6 can not skid off from broach shell 2 outer surface integral body, and the number of coniform roller 6 can be decided according to size of rolling the hole and designing requirement.The angle β of the axial line of each coniform roller 6 and knife bar 1 axial line is identical with the angle of its tapering α, and the external envelope face 16 (broken circle among Fig. 2 and Fig. 3) that is to say a plurality of coniform rollers 6 is for being the taper seat concentric with knife bar 1 with the interior enveloping surface of the concentric face of cylinder of knife bar 1, a plurality of coniform rollers 6.Knife bar 1 lower end is provided with the taper seat 17 that contacts with the surface of a plurality of coniform rollers 6, and promptly taper seat 17 overlaps with the interior enveloping surface of a plurality of coniform rollers 6.For the ease of processing; Knife bar 1 is preferably made two upper and lower two sections body structures; Epimere is made up of taper shank section and thread segment, and adjusting gear 3 all is connected on the thread segment with lock gear 4, and hypomere is made up of straight section and awl section; Broach shell 2 kinks are on straight section, and the awl section is used for the contact matching with coniform roller 6.Adjusting gear 3 is provided with regulating sleeve 7 with lock gear 4 outsides, and regulating sleeve 7 is made up of with following body 72 upper sleeve body 71 that is screwed onto together.Upper sleeve body 71 inner surfaces be provided with can with the locking teeth 8 of lock gear 4 engagement with can with the regulating tooth 9 of adjusting gear 3 engagements; The outer surface of following body 72 is provided with the annular knurl (not shown); The setting of annular knurl is in order to increase the frictional force when holding, to be convenient to rotate regulating sleeve 7 with hand.The outer two ends spring 10 of roof pressure on convex shoulder 5 and regulating sleeve 7 respectively that be with on the broach shell 2.

State shown in Figure 1 is to roll the state that the hole cutter is deposited or used, and this state locking teeth 8 is thrown off with adjusting gear 3 with lock gear 4 engagements, regulating tooth 9, causes the variation of coniform roller 6 positions to prevent that regulating sleeve 7 from rotating, thereby has changed the size of rolling the hole cutter.In the direction of Fig. 1 on drawing; Can change the size of rolling the hole cutter through following adjusting: with pushing away on the regulating sleeve 7, locking teeth 8 and lock gear 4 are thrown off, regulating tooth 9 and adjusting gear 3 engagements; Rotation regulating sleeve 7 makes and moves a segment distance on the adjusting gear 3; Broach shell 2 makes coniform roller 6 that the space of inside slip has been arranged moving one section identical distance on also under the effect of joint cover 7 and spring 10 after moving on the broach shell 2, can realize rolling the diminishing of size of hole cutter.Backward rotation regulating sleeve 7 makes adjusting gear 3 move down a segment distance, and adjusting gear 3 orders about broach shell 2 and also moves down identical distance, and when broach shell 2 moved down, its taper seat 14 pressure cone shape rollers 6 outwards slided, thereby the change of size that realizes rolling the hole cutter is big.No view is big or turn the size of rolling the hole cutter down, regulate finish after, only need unclamp regulating sleeve 7 and make it reset to state shown in Figure 1 to get final product.

Claims

1. one kind is rolled the hole cutter; It is characterized in that comprising knife bar (1) and broach shell (2); Be bolted with adjusting gear (3) on the knife bar (1); The lock gear (4) that only can endwisely slip and be positioned at adjusting gear (3) top is housed on the knife bar (1); Broach shell (2) kink is gone up and is positioned at adjusting gear (3) below at knife bar (1); The upper end of broach shell (2) is provided with convex shoulder (5), the bottom of broach shell (2) be periphery be installed in a plurality of on the broach shell (2) can be along the coniform roller (6) radially of broach shell (2), the axial line of each coniform roller (6) is identical with the tapering of himself with the angle of knife bar axial line; Knife bar (1) is provided with the taper seat that contacts with the surface of a plurality of coniform rollers (6); Adjusting gear (3) and lock gear (4) outside are provided with regulating sleeve (7), regulating sleeve (7) inner surface be provided with can with the locking teeth (8) of lock gear (4) engagement with can with the regulating tooth (9) of adjusting gear (3) engagement, broach shell (2) is gone up the outer spring (10) of two ends difference roof pressure on convex shoulder (5) and regulating sleeve (7) that be with.

2. the hole cutter that rolls according to claim 1 is characterized in that being provided with thrust bearing (11) between said broach shell (2) and the adjusting gear (3).

3. the hole cutter that rolls according to claim 1 and 2 is characterized in that said regulating sleeve (7) is made up of the upper sleeve body (71) and the following body (72) that are screwed onto together.

4. the hole cutter that rolls according to claim 3 is characterized in that the said outer surface of body (72) down is provided with annular knurl.