CN85201006U - C type saw chain with pitch 6.35-30 mm - Google Patents

Abstract

The utility model discloses a C type saw chain with pitch 6.35-30 mm which is a saw tool for sawing the wood, and is used for the chain saw machine. The present used saw chain has very short service life, and the gear cutting section can not be fully used. The geometric-form of the main component of the gear cutting of the saw chain which is provided by the utility model is changed to make the gear cutting section be positioned at the middle part of gear cutting components. The positive pressing force which is generated in the cutting time homogeneously reacts at the bottom of the gear cutting components to make the cutting geometric parameters maintain constant. The surface of each component of the saw chain adopts the epigraphy infiltrating processing, and thus, the service life of the saw chain is raised.

Description

C type saw chain with pitch 6.35-30 mm

The sawing instrument of sawing apparatus, a kind of saw chain that is used for chain saw machine.

Widely used chain saw machine (comprising chain saw and electric saw) in forest industry at present and the timber comprehensive utilization industry adopts the saw chain of West Germany ST IHL company and U.S. OM IK company more.The saw chain that a patent of 81 years West Germany (DE30,02,115.A1) is provided has and replaces the trend of saw chain in the past.This saw chain is formed with the bearing pin riveted joint by continuously arranged left and right cutting assembly, drive link and connection chain sheet, and wherein left and right cutting assembly comprises cutting, limit glassware and connection chain sheet three parts, and is made of one.The left side of this saw chain, the right cut tooth assembly, because cutting is positioned at the rear portion, when sawmilling, swing back easily, the positive pressure force that cutting is produced is concentrated and is acted on a left side, right cut tooth assembly and together be positioned at the rear portion of the connection chain sheet bottom of opposite side with their rivetings, i.e. root, it is very fast to wear and tear, and cause the rivet hole place above root to rupture easily, saw chain was scrapped, and the cutting part can not make full use of, because a left side, the layback of right cut tooth assembly, the geometric parameter of cutting changes, when serious even become cutting and be scraping, cutting force sharp increase, engine transships easily, guide plate also can generate heat, cause the chain saw machine life-span to descend, the quality of saw kerf is also bad in addition, the sidewall injustice; Secondly, when making left and right cutting assembly, generally be that rivet hole processes the cutting part with the blanking time processing and then with stamping forming way, owing to cutting at the rear portion, a following rivet hole easy deformation.

The purpose of this utility model, it is the geometry that changes left and right cutting assembly, make it when sawmilling, not produce the layback phenomenon, left and right cutting assembly and together be positioned at the bottom of the connection chain sheet of opposite side with its riveting, be root and heel, all contact, the positive pressure force that is produced when bearing cutting equably with the guide rail of guide plate, reduce the rate of wear, improve the life-span of saw chain; In addition, so also can keep the geometric parameter that cuts constant, make stable working, thereby can prolong the life-span of chain saw machine and improve the quality of saw kerf.

Pitch 6.35-30mmC type saw chain, by continuously arranged left and right cutting assembly and the drive link that is connected the cutting assembly, the connection chain sheet forms by the bearing pin riveted joint, in the longitudinal direction, left and right cutting assembly and connection chain sheet are positioned at the both sides of saw chain, and drive link is in the centre position.Wherein left and right cutting assembly comprises cutting again, three ones of limit glassware and connection chain sheets, and make one, cutting is positioned at the middle part of cutting assembly, on the center line of two rivet holes, and the reach of cutting sword level, for guaranteeing to have enough tooth storehouses, the limit glassware is correspondingly level reach also.Left and right cutting assembly, the surface of connection chain sheet, drive link and bearing pin all carry out chromising to be handled, to increase hardness and wearability.Saw chain is the driving wheel that is contained in chain saw machine, on the periphery of guide wheel and guide plate, the bottom of left and right cutting assembly and connection chain sheet, be root and heel, contact with the guide rail of guide plate, slide thereon, and move in the guide groove of guide plate in the bottom of drive link, play saw chain left and right sides positioning and guiding and clear bits effect.Be positioned at the middle part of cutting assembly during sawmilling owing to cutting, can not swing back, the positive pressure force that produced of cutting act on equably left and right cutting assembly and with its be riveted together root and the heel of the connection chain sheet bottom that is positioned at opposite side, root is all contacted with guide rail with heel, become 4 contacts.

The utility model is compared with existing saw chain, its superiority is, by changing a left side, the geometry of right cut tooth assembly, each takes measures such as chromising processing in the part surface in addition, the working condition of saw chain and the performance of saw chain itself have been improved, saw chain geometric parameter in whole life cycle is remained unchanged or change small, thereby can greatly be improved the service life of novel saw chain, cutting can make full use of, and the sharpening time of cutting sword also prolongs greatly, originally an order of classes or grades at school is wanted sharpening three times, as long as sharpening once before the class, whole order of classes or grades at school does not need to carry out sharpening again, has improved operating efficiency now, left in addition, the manufacturability of right cut tooth assembly also improves, and can not cause following rivet hole distortion because of punch forming cutting part; Owing to the change of working condition, not only can increase the service life of chain saw machine, the quality of saw kerf also can improve; Owing to taked surperficial chromising to handle, the Corrosion Protection of saw chain also improves greatly.

Description of drawings:

Fig. 1. be the work sheet of pitch 6.35-30mmC type saw chain.

Fig. 2 is the A-A cutaway view among Fig. 1.

Fig. 3 is the part exploded view in addition of C type saw chain.

Realize best way of the present utility model:

Pitch 6.35-30mmC type saw chain is by left cut tooth assembly (1), right cut tooth assembly (2), and drive link (11), connection chain sheet (13) and bearing pin (14) are formed.Left and right cutting assembly (1) (2), all by cutting (3), limit glassware (6) and connection chain sheet (10) three parts are formed, and make one; Cutting (3) comprises cutting sword (4) and tooth storehouse (5), and connection chain sheet (10) part also comprises 2 rivet holes (7) and root (8) and heel (9); The middle part of cutting (3) position left and right cutting assembly (1) (2) is on the center line of two rivet holes (7).The more existing cutting assembly reach of cutting sword (4) is for guaranteeing enough also corresponding reaches of tooth storehouse (5) limit glassware (6).Two pin shaft holes (12) are arranged on the drive link (11), and its size matches with the drum (15) of bearing pin (14), is movingly.Connection chain sheet (13) is the same with the size and dimension of the connection chain sheet (10) of left and right cutting assembly (1) (2), two rivet holes (7) and root (8) is also arranged, heel (9).The assembling of saw chain as shown in Figure 3.A slice left cut tooth assembly (1) is placed on the left side, a slice connection chain sheet (13) is placed on the right, a slice drive link (11) is put in the centre, utilize the rivet hole (7) and the anterior pin shaft hole (12) of drive link (11) at left cut tooth assembly (1) and connection chain sheet (13) rear portion, with bearing pin (14) three is riveted together, because pin shaft hole (12) is movingly with the drum (15) of bearing pin (14), and is so Mao Jie parts can rotate mutually, as follows; Put two connection chain sheets (13) again in two sides of drive link (12) then, a pin shaft hole (12) and anterior two rivet holes (7) of two connection chain sheets (13) by drive link (11) back are riveted together them with bearing pin (14); Put a slice drive link (11) again in the centre of two connection chain sheets (13), the three is riveted with aforementioned manner; Next put a slice right cut tooth assembly (2) on the right of drive link (11) again, put a slice connection chain sheet (13) in the left side, pin shaft hole (12) by drive link (11) back, the rivet hole (7) that right cut tooth assembly (2) and connection chain sheet (13) are anterior, with bearing pin (14) they are riveted together, go down so repeatedly, just be assembled into a saw chain.In use, saw chain is enclosed on the periphery of chain saw machine driving wheel, guide wheel and guide plate (16), left and right cutting assembly (1) (2) and and the root (8) and the heel (9) of their connection chain sheet (13) bottoms of being riveted together, contact with the guide rail (17) of guide plate (16), bear equably during sawmilling because the positive pressure force that cutting is produced, the Cheng Sidian contact, moving in the guide groove (18) of guide plate (16) in the bottom of drive link (11), plays location and clear bits effect.Left and right cutting assembly (1) (2), drive link (11), the surface of connection chain sheet (13) and bearing pin (14) all adopts chromising to handle, the hardness of cutting sword (4) is improved, prolong one time the sharpening time, the wearability of root (8) and heel (9) and pin shaft hole (12) and drum (15) has also improved in addition, thus the life-span of improving whole saw chain.

Claims (2)

1, a kind of sawing instrument of sawing apparatus, the saw chain that is used for chain saw machine, it is by a continuously arranged left side, right cut tooth assembly and the drive link that is connected the cutting assembly, the connection chain sheet forms with the bearing pin riveted joint, wherein left, the right cut tooth assembly comprises cutting again, limit glassware and connection chain sheet three parts, and make one, saw chain will be at the driving wheel of chain saw machine during sawmilling, on the periphery of guide wheel and guide plate, a left side, the bottom of right cut tooth assembly and connection chain sheet, be that root contacts with the guide rail of guide plate with heel, slide thereon, and move in the guide groove of guide plate in the bottom of drive link, play guiding, location and clear bits effect.Of the present utility model being characterised in that, the cutting part of left and right cutting assembly is positioned at the centre position, and on the center line of two rivet holes, the reach of cutting sword level is for guaranteeing to have enough tooth storehouses, the also corresponding reach of limit glassware.

2, saw chain as claimed in claim 1 is further characterized in that, the surface of wherein left and right cutting assembly, connection chain sheet, drive link and bearing pin is all carried out chromising and handled.

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