CN1360989A

CN1360989A - New-type sheet cutter

Info

Publication number: CN1360989A
Application number: CN 02110629
Authority: CN
Inventors: 俞岳皋
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-22
Filing date: 2002-01-22
Publication date: 2002-07-31
Anticipated expiration: 2022-01-22
Also published as: CN1162241C

Abstract

The sheet cutter is used in making sheet product, field decoration, repairing, etc. It consists of frame, eccentric shaft, upper sliding block, lower sliding block, guide sleeve, cutter seat, cutter rod and other parts and features the cutter rod separated into two parts set axially and oppositely and with fixed inner end and moving outer end inside the cutter seat, which is connected to the frame via the symmetrical guide structure. Driven by outer force, the eccentric shaft rotates at high speed to drive via the upper sliding block the upper sliding block and the cutter rod to reciprocate and thus to shear and cut sheet in either linear or curvilinear mode.

Description

New-type sheet cutter

Technical field

The present invention relates to a kind of sheet cutter tool.

Background technology

In sheet metal below 2.2 millimeters and the nonmetal sheet products industry below 5 millimeters; as electric appliance box; the stainless steel kitchen cabinet; safety box; various containers; and panel beating repairing trades; car crust is repaired and decoration industry; meet the cutting problem of some thin plates through regular meeting; in batches big certain available punch press; the kind equipment cutting of plate shearing machine; but can only lean on craft or electric clippers to some other cutting tasks of star; instruments such as gas cutting are finished; the former extremely requires great effort; the latter can only cut straight line; and when cutting sheet material can lift up pretty troublesome, to trimmed curve; endoporus or up-and-down sheet material such as corrugated sheet more can't be finished.Gas cutting cost height, efficient is low, otch is rough again.Therefore the appearance of the little lightweight portable cutter of a kind of volume, provide very big convenience to above industry and work post, it need not special installation, as long as power supply and 10MM pistol electric drill or pneumatic drill are provided, can realize cutting the Any shape lines, easy to use, safety." double end sheet cutter " as number of patent application 01246715.4, its operation principle is that the cutting task is finished in the straight reciprocating motion that utilizes the high speed rotary motion of eccentric shaft to be converted into knife bar, its defective is that knife bar is a monoblock type, the fixing branch head screw of using with top shoe, make knife bar loading and unloading trouble, cutting edge evolution difficulty, fixedly being close to of tool rest decided screw and is fixed in the body, and the frequent impact owing to standing work produces the loosening phenomenon of tool rest, influences cutting effect.United States Patent (USP) 4748744 disclosed technical schemes also are to adopt the all-in-one-piece lever structure of single head, knife bar all relies on holding screw with being connected with tool rest and being connected of body of top shoe, therefore need shed tool rest earlier when having more changing knife rod, the cutting edge position is not on whole circumference, promptly scrap after the wearing and tearing, can't conversion, in the processing of knife bar, must be definitely coaxial with the groove that a head screw is fixing with cutting edge, otherwise influence cutting effect, cause the raising of manufacturing cost, also have defectives such as tool rest easily becomes flexible simultaneously.

Summary of the invention

Technical problem to be solved by this invention is to overcome the defective of prior art and provide a kind of knife bar form, cutting edge to regulate the improved New-type sheet cutter of fixed form of connected mode, tool rest and the body of conversion, knife bar and top shoe, knife bar is easy to loading and unloading to reach, the cutting edge adjusting is easy, prevent that tool rest is loosening, improve cutting effect, reduces manufacturing cost.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: New-type sheet cutter, comprise body, in body, be provided with by bearing supporting, external force drives the eccentric shaft of rotation, eccentric shaft is provided with the sliding block of active mounting, sliding block covers and built-in with the top shoe active mounting and by the stifle of back-up ring location again, rotatablely moving of eccentric shaft is converted into and the fixing knife bar straight reciprocating motion of top shoe, the knife bar the inner that has punching cutting cutting edge is fixed with top shoe, the outer end expansion bearing is having the thin plate charging aperture, in chip removal mouth and charging aperture the tool rest to neck surface, it is characterized in that described knife bar is divided into two, coaxial in opposite directions in pairs setting, knife bar the inner is by self recessed annular groove and the holding screw that is installed in the top shoe, locking spring, ball stud is done the fixedly connected of radially self-regulated; The guide frame connection body that tool rest is provided with by being symmetrical in body.

Described guide frame comprises that this guide pin bushing is threaded with tool rest by takeing on the spacing guide pin bushing that pilot hole is joined in knife bar work that has in the body, and by 2 locking nuts and tightly in body and tool rest end.

Described guide frame promptly is provided with knife bar work and joins pilot hole on tool rest, this tool rest directly is connected with the body axis hole, and the outside is spacing with omoplate, and is inboard with nut, spring washer and tight.

Cutting cutting edge on the described knife bar is circle distribution, is the right angle cutting edge.

Cutting cutting edge on the described knife bar is circle distribution, is the acute angle cutting edge of α for acute angle.

Compared with prior art, the present invention is decomposed into the knife bar form and is divided into two by the single head monoblock type, and two knife rod heads all have cutting edge, can adopt the charging aperture of two different in width, carries out the metal or the cutting of nonmetal thin plate of two kinds of different-thickness; Because knife bar has adopted the radially holding screw of self-regulated, locking spring and ball stud with fixedlying connected of top shoe, therefore the knife bar axial thrust is big, radially can self-regulated guarantee axiality, and it is all very convenient to make knife bar transposing dismounting and cutting edge regulate conversion, needn't dismantle tool rest, can externally finish; The guide frame connection has been adopted in the change of tool rest and body fixed form, has increased the tool rest rigidity, can do radially, axially regulate arbitrarily, and tool rest is not loosening, can bear bigger axial punching shear, good cutting effect.

Description of drawings

Fig. 1 is structural representation of the present invention (body is that taper shape combines with columniform).

Fig. 2 sheds vertical view behind the stifle for Fig. 1.

Fig. 3 is the another kind of fixed form (body is a hexagon) of tool rest and body.

Fig. 4 sheds vertical view behind the stifle for Fig. 3.

Fig. 5 is the A place enlarged drawing of Fig. 1.

Fig. 6 is a kind of structural formula of knife bar cutting cutting edge.

Fig. 7 is the another kind of structural formula of knife bar cutting cutting edge.

Fig. 8 is a knife bar cutting edge neck shaped.

Fig. 9 is the B-B cutaway view (the neck two sides are parallel plane) of Fig. 8.

Figure 10 is the B-B cutaway view (the neck two sides are for intersecting the inclined-plane) of Fig. 8.

Figure 11 is the present invention and the not detachable exploded view that is connected of pistol electric drill.

Figure 12 is the present invention and the not detachable syndeton outline drawing of pistol electric drill.

Figure 13 is connected exploded view for the present invention with pistol electric drill detachable.

The specific embodiment

Embodiment is described in detail the present invention again below with reference to accompanying drawing.

Shown in Fig. 1-13, New-type sheet cutter and the supporting use of pistol electric drill can be cut sheet metal below 2.2 millimeters or the nonmetal thin plate below 5 millimeters, but also cutting diameter greater than 25 millimeters arbitrary curve and circular hole, cutting speed is fast, can reach more than 1 meter/minute.

This cutter has the body 10 of a circle, taper shape or hexagon profile, body has the coaxial axis hole of orthogonal and mutual perforation, being provided with by eccentric throw δ oiliness bearing 13 supportings, that external force drives in Fig. 1 vertical direction axis hole is the eccentric shaft 14 of 2.5-3.5 millimeter, eccentric shaft is made up of common T-shape axle and the movable sliding block 15 that is inlaid in the inner eccentric part of T-shape axle, and form lubricating oil storage chamber 12 between the lower surface of inlaid hole and sliding block, be beneficial to lubricated.The exposed junction of eccentric shaft is a hexagonal axis, be convenient to pistol electric drill or pneumatic drill on supporting connection of chuck, form drive connection.

Sliding block 15 on the eccentric shaft 14 is movable again to be inlaid in the top shoe 7 of circular configuration, and built-in by stifle 8 coverings of back-up ring 9 location.The straight reciprocating motion of the knife bar 4 that the transmission of power by upper and lower slide block is converted into rotatablely moving of eccentric shaft to be fixed in the top shoe.

Knife bar 4 by the special steel material manufacturing is divided into two, through strict heat treatment, coaxial in opposite directions in pairs setting, knife bar the inner is fixing with top shoe 7, employing has radially holding screw 20 from conditioning function, be installed in the recessed annular groove 16 of locking spring 21 in this screw and ball stud 22 and knife bar self as be connected (see Fig. 1, Fig. 5) of knife bar with top shoe, owing to leave elastic gap between the inner of holding screw and the ball stud, so have radially from conditioning function, guarantee the knife bar axiality, axial thrust is big.The knife bar outer end has punching cutting cutting edge, and expansion bearing is in having thin plate charging aperture 2, chip removal mouth 1 and the charging aperture tool rest 3 to neck surface 17, and tool rest is connected with body by the guide frame that is symmetrical in the body setting separately.

Described guide frame comprises by takeing on spacing guide pin bushing 6 (see figure 1)s that pilot hole is joined in knife bar work that have in the body 10, this guide pin bushing is threaded with tool rest, inner spacing with the body omoplate, and by 2 locking nuts 5 and tightly in body and tool rest end, this guide frame makes the tool rest good rigidly, can not become flexible, the tool rest cutting edge can be done axially and radially to regulate arbitrarily.Also having a kind of scheme is directly to be shaped on knife bar work to join pilot hole on tool rest 3, this tool rest directly is connected with the body axis hole, and the outside is spacing with omoplate, and is inboard with nut 19, spring washer 18 and tight (seeing Fig. 3-4), the tool rest of this scheme can only radially rotate adjusting, can't make axial adjustment.The fit clearance of knife bar and tool rest is big is used for cutting thicker material specially, and the thin material of cutting that the gap is little helps improving the life-span and the cut quality of knife bar and tool rest like this.

The connected mode of the fixed form of above-mentioned knife bar and top shoe and tool rest and body has all guaranteed the convenience of knife bar loading and unloading and the simplicity of cutting edge evolution, needn't dismantle tool rest during knife bar transposing loading and unloading, firmly extracts to get final product; As long as vise rotation angle in knife bar outer end when the cutting edge wearing and tearing need to change the position, just the cutting edge that can avoid wearing and tearing is changed new cutting edge.

The downside of knife bar cutting cutting edge and tool rest charging aperture is formed shearing edge, and the cutting cutting edge is circle distribution.Can be that 90 ° of right angle cutting edges 23 or acute angle are the acute angle cutting edge 24 (seeing Fig. 6-7) of α=80～85 °, the cutting edge circle distribution be after the cutting edge wearing and tearing arbitrarily conversion created condition.Because knife bar is subjected to the influence of eccentric throw δ=2.5-3.5 millimeter, so the upper and lower amount of exercise of knife bar equals the 5-7 millimeter.

Charging aperture 2 sizes of tool rest 3 are relevant with the sheet thickness of cutting.Neck 17 two sides on charging aperture opposite are the crossing inclined-plane 26 of parallel plane 25 or angle β=10～15 °, and parallel plane is used for cutting straight line sheet material, and being convenient to turn in crossing inclined-plane, is used for cutting curve (seeing Fig. 8-10).

The chip removal mouth 1 of tool rest is located at the coaxial downward direction of knife bar, and shape is toroidal or is a bit larger tham the circle hole shape of knife bar diameter, helps getting rid of the bits end that cuts down, the smooth and easy no clogging of chip removal.

The tool rest outside is provided with detachable plastics system taper knob 11, and the faying face of taper knob and tool rest is a hexagon.

When this cutter and pistol electric drill are supporting when making not detachable structure and using (seeing Figure 11-12), electric drill front shroud 27 is made disjunctor with cutter body 10, and is connected and fixed with connecting bolt and electric drill back casing 29.The hexagonal end that exposes by the eccentric shaft 14 of two bearings supporting is improved to little circular shaft, be shaped on Woodruff key slots and keyways on the circular shaft, the gear wheel 30 that is installed on it forms by woodruff key 31 and is in transmission connection, electric drill mainshaft gear 28 transmits deceleration power as driving wheel and gear wheel engagement, carry out cutting action thereby drive cutter, form the electronic cutter that has self power.

When cutter is connected with pistol electric drill or vapour brill formation detachable, be connected (seeing Figure 13) with cutter eccentric shaft 14 outer-hexagonal ends by drill chuck 32.

During this cutter cuts workpiece, a handle that holds cutter, one holds the pistol electric drill.Electric drill after the unlatching drives eccentric shaft and rotates at a high speed, be converted into the straight reciprocating motion that top shoe drives knife bar by rotatablely moving of sliding block, when the workpiece thin plate when charging aperture is sent into, the cutting cutting edge that the knife bar of high rigidity and tool rest are formed is just gnawed thin plate layer by layer, because the semidiameter at knife bar cutting edge place is 0.5 millimeter, therefore gnaw the amount of cutting is 0.5 millimeter at every turn, and when being 2600 rev/mins as if electric drill speed, promptly one minute cutting speed is approximately 1300 millimeters.Workpiece can be fixed or cutter is fixed during cutting, if will cut endoporus, one of subdrilling is slightly larger than the circular hole (about 10 millimeters) of cutter head size in advance, then cutting head is stretched in the hole, can cut out various curves by figure.The present invention manufactures experimently as new product development, and panel beating repairing, repairs profession, pilot development mechanism and amateurish making fan are very useful.

Claims

1. New-type sheet cutter, comprise body (10), in body, be provided with by bearing (13) supporting, external force drives the eccentric shaft (14) of rotation, eccentric shaft is provided with the sliding block (15) of active mounting, sliding block covers and built-in with top shoe (7) active mounting and by the stifle (8) of back-up ring (9) location again, rotatablely moving of eccentric shaft is converted into and fixing knife bar (4) straight reciprocating motion of top shoe, the knife bar the inner that has punching cutting cutting edge is fixed with top shoe, the outer end expansion bearing is having thin plate charging aperture (2), in chip-removal hole (1) and charging aperture the tool rest (3) to neck surface (17), it is characterized in that described knife bar (4) is divided into two, coaxial in opposite directions in pairs setting, knife bar the inner by self recessed annular groove (16) and be installed in holding screw (20) in the top shoe, locking spring (21), ball stud (22) is done the fixedly connected of radially self-regulated; The guide frame connection body that tool rest (3) is provided with by being symmetrical in body (10).

2. New-type sheet cutter according to claim 1, it is characterized in that described guide frame comprises by the spacing knife bar work that has of shoulder in the body (10) joins the guide pin bushing of pilot hole (6), this guide pin bushing is threaded with tool rest (3), and by 2 locking nuts (5) and tightly in body and tool rest end.

3. New-type sheet cutter according to claim 1, it is characterized in that described guide frame promptly is provided with knife bar work and joins pilot hole on tool rest (3), this tool rest directly is connected with the body axis hole, and the outside is spacing with omoplate, and is inboard with nut (19), spring washer (18) and tight.

4. New-type sheet cutter according to claim 1 is characterized in that the cutting cutting edge on the described knife bar (4) is circle distribution, is right angle cutting edge (23).

5. New-type sheet cutter according to claim 1 is characterized in that the cutting cutting edge on the described knife bar (4) is circle distribution, is the acute angle cutting edge (24) of α for acute angle.

6. New-type sheet cutter according to claim 5 is characterized in that described sharp angle=80～85 °.

7. New-type sheet cutter according to claim 1 is characterized in that described tool rest neck (17) two sides are the crossing inclined-plane (26) of parallel plane (25) or angle β=10～15 °.

8. New-type sheet cutter according to claim 1 is characterized in that described tool rest (3) outside is provided with detachable taper knob (11), and the faying face of taper knob and tool rest is a hexagon.

9. New-type sheet cutter according to claim 1, it is characterized in that the described body (10) and the front cover shell (27) of pistol electric drill are not detachable conjoined structure, in be provided with the gear wheel (30) that is connected with key (31) on the eccentric shaft (14), the mainshaft gear of this gear wheel and pistol electric drill (28) transmission of intermeshing, and be connected with electric drill back casing (29) with bolt.

10. New-type sheet cutter according to claim 1 is characterized in that described cutter eccentric shaft (14) is connected with electric drill by detachable drill chuck (32).