CN102398070A

CN102398070A - Cropping scissor shaft system

Info

Publication number: CN102398070A
Application number: CN2011103813819A
Authority: CN
Inventors: 杨松; 吴华涛; 李文喜; 王朝襄
Original assignee: XIANGYANG BOYA PRECISION MACHINERY CO Ltd
Current assignee: XIANGYANG BOYA PRECISION MACHINERY CO Ltd
Priority date: 2011-11-27
Filing date: 2011-11-27
Publication date: 2012-04-04

Abstract

The invention discloses a cropping scissor shaft system, which is used for shearing slitter edges after a metal strip coil is longitudinally and continuously trimmed. In the system, a cutter bit body is arranged at the front end of a main shaft; a transmission gear is arranged in the middle of the main shaft; a lateral clearance adjustment mechanism is arranged on the tail part of the main shaft; six inclination cutter grooves are formed on the cutter bit body; a blade and a gasket III are compacted in the inclination cutter grooves through compaction blocks respectively; a cutter bit body inner hole is a taper hole; the transmission gear and the main shaft have a cylindrical surface combined key positioning structure; a gasket I for eliminating a gear transmission clearance is arranged on the side face of the transmission gear; a screw I and a screw II are screwed on an adjustment screw rod relative to the main shaft; a gasket II is arranged between the screw I and the screw II; and double-row tapered roller bearings are arranged at the rear end of the main shaft. The system has a relatively mature machining process, is simple and practicably mounted, assembled and adjusted and has high operational feasibility; the bearings have a reasonable structure, are stably and reliably positioned in the axial direction, can prevent rollers from being clamped, are normally operated and are difficult to damage; and a threaded clearance can be eliminated effectively, and adjustment errors can be reduced.

Description

Scrap cutter cutter shaft system

Technical field

The present invention relates to iron and steel and non-ferrous metal industry technical field, specifically is a kind of cutter shaft system that the vertically continuous back slitter edge of cutting edge of metal coil tape is cut off that is used for.

Background technology

Scrap cutter is cut off equipment as the slitter edge continuous transverse of sheet metal strip, is used widely at iron and steel and non-ferrous metal industry.Scrap cutter cutter shaft system shears the operational efficiency that will directly influence unit at work efficiently as scrap cutter core work parts.Broken limit device commonly used at present both at home and abroad has three kinds of structures usually: the FAGOR device structure; SELEMA device structure and of home make device structure; Three's part that in use all comes with some shortcomings.

One, there is following drawback in the FAGOR device structure:

1, body of tool bit complex structure, inside is taper design, is the combination of plane and arc surface simultaneously, the processing and manufacturing difficulty is very big;

2, the adjustment pad is all arranged at body of tool bit cutter side installed surface and bottom, causes the cutter adjustment complicated, and the adjustment precision is not high;

3, the thrust roller bearing of cutter shaft rear end is used for controlling the axial float precision; Bear axial load power simultaneously, but in use, the retainer of thrust roller bearing is because tenesmus; Be easy to rub with the cylindrical of mount pad; Cause the fracture of retainer, the jam phenomenon appears in roller, and bearing can't operate as normal;

4, there is the gap in the screw thread of the guiding mechanism of adjustment blade sideshake, can't eliminate, and causes the sideshake precise decreasing.

Two, there is following drawback in the SELEMA device structure:

1, the blade side clearance adjustment mechanism is to adjust through the worm and gear structure, and drive gap can't be eliminated;

2, the pairing angular contact ball bearing of cutter shaft rear end, it is less to bear axial load power, is easier to damage.

Three, there is following drawback in the home equipment structure:

1, the helical gear of cutter shaft transmission system and main shaft are the inclined-plane fit structure, and when receiving shearing force big, helical gear is axially having certain deviation, causes end play unstable;

2, the thrust roller bearing of cutter shaft rear end is used for controlling the axial float precision; Bear axial load power simultaneously, but in use, the retainer of thrust roller bearing is because tenesmus; Be easy to rub with the cylindrical of mount pad; Cause the fracture of retainer, the jam phenomenon appears in roller, and bearing can't operate as normal;

3, the butterfly spring structure of cutter shaft rear end can be eliminated the adjustment thread pitch, but has taken the space of motor rear end, can't accomplish the installation of electrical control detecting element, and only suitable manual adjustment is functional poor.

Summary of the invention

For overcoming the deficiency of prior art, goal of the invention of the present invention is to provide a kind of scrap cutter cutter shaft system, adopts the rational structure compound mode, realizes the high accuracy adjustment of broken limit cutter shaft system, and the purpose of the system of assurance normal and stable continuous operation.

For realizing above-mentioned purpose, front-end of spindle of the present invention is equipped with body of tool bit, and travelling gear is equipped with at the middle part; Tail end is equipped with the sideshake guiding mechanism; It is characterized in that: have six road gradient cutter grooves on the body of tool bit, through compact heap blade, pad three are pressed in the oblique cutter groove respectively, the body of tool bit endoporus is a taper hole; The key location structure that travelling gear combines with the main shaft employing face of cylinder, the pad one that is used to eliminate the gear drive gap is equipped with in the side of travelling gear; Be rotary with screw one and screw two on the adjustment screw mandrel relative with main shaft, pad two places between screw one and the screw two; Double-row conical bearing is equipped with in the rear end of main shaft.

The present invention compared with prior art, processing technology is ripe relatively, it is simple that the assembling adjustment is installed, operation possibility is high; Bearing arrangement is reasonable, and bearing shaft is reliable to positioning stablity, can avoid roller the jam phenomenon to occur, and bearing working is normal, and is not fragile; Can effectively eliminate thread pitch, reduce the adjustment error.

Description of drawings

Fig. 1 is a structure diagram of the present invention;

Fig. 2 is the A-A partial sectional view of Fig. 1.

Specific embodiments

Shown in accompanying drawing, the present invention mainly is made up of parts such as body of tool bit 1, travelling gear 2, pad 1, main shaft 4, double-row conical bearing 5, adjustment screw mandrel 6, screw 1, pad 28, screw 29, blade 10, pad 3 11, compact heaps 12.Body of tool bit 1 is processed with six road gradient cutter grooves, through compact heap 12 blade 10, pad 3 11 is pressed in the oblique cutter groove respectively, adapts to the shearing lap of different plates through the match grinding of pad 3 11 height; Only be furnished with adjustment pad 3 11 in the bottom surface, adapt to different thickness of slab laps adjustment, the cancellation of side adjustment backing plate relies on the accurate processing of body of tool bit to guarantee the location uniformity of six blades; Body of tool bit 1 adopts the conical surface of 1:10 to locate with main shaft 4.Travelling gear 2 and the key location structure that the main shaft 4 employing faces of cylinder combine have guaranteed positioning accuracy, have reduced the processing technology difficulty simultaneously again; Pad 1 is equipped with in the side of travelling gear 2, and travelling gear 2 is eliminated the gear drive gap through pad one 3 match grindings, guarantees that the side clearance of plate shearing is stable.Double-row conical bearing 5 both can bear the radial component of shearing, can bear axial thrust load again, guaranteed that axis system has enough rigidity to satisfy and shears the load that strip produced, and bearing is not fragile yet.Be rotary with screw 1 and screw 29 on the adjustment screw mandrel 6; Pad 28 places between screw 1 and the screw 29; Match grinding through pad 28 thickness is eliminated thread pitch, when rotating adjustment screw mandrel 6, promotes main shaft 4 and produces micro-moving forward or backward; The travelling gear 2 of assembling is through left and right characteristic of revolving the helical teeth engagement on the main shaft 4; Rotate a certain angle simultaneously, make between the blade 10 on the body of tool bit 1 side clearance that trace takes place and change, the side clearance adjustment accurately with stable when guaranteeing to shear different plate.

Claims

1. scrap cutter cutter shaft system; Main shaft (4) front end is equipped with body of tool bit (1); Travelling gear (2) is equipped with at the middle part, and tail end is equipped with the sideshake guiding mechanism, it is characterized in that: have six road gradient cutter grooves on the body of tool bit (1); Through compact heap (12) blade (10), pad three (11) are pressed in the oblique cutter groove respectively, body of tool bit (1) endoporus is a taper hole.

2. according to the described scrap cutter cutter shaft of claims 1 system; It is characterized in that: the key location structure that travelling gear (2) combines with main shaft (4) the employing face of cylinder, the pad one (3) that is used to eliminate the gear drive gap is equipped with in the side of travelling gear (2).

3. according to the described scrap cutter cutter shaft of claims 1 system, it is characterized in that: be rotary with screw one (7) and screw two (9) on the adjustment screw mandrel (6) relative with main shaft (4), pad two (8) places between screw one (7) and the screw two (9).

4. according to the described scrap cutter cutter shaft of claims 1 system, it is characterized in that: double-row conical bearing (5) is equipped with in the rear end of main shaft (4).