CN202207824U

CN202207824U - Corner milling device

Info

Publication number: CN202207824U
Application number: CN2011202018745U
Authority: CN
Inventors: 金迎节
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-05-02
Anticipated expiration: 2021-06-15

Abstract

The utility model relates to a corner milling device. A lock sleeve is connected with the output shaft of a tool; a cutter arbor is connected and fixed with the output shaft of the tool and then fastened; a bearing I is installed in a locking nut bearing pedestal and then fastened through a locking nut IV; a bearing II is installed in a threaded sleeve and then fastened through a locking nut II, then installed in the locking nut bearing pedestal, and then fastened through a locking nut III; the locking nut bearing pedestal is connected with the tool, tightly presses the end surface of a bearing IV, and then fastened through a locking nut I, and synchronously, the bearing I is installed on a bearing table of the cutter arbor; the three blades are fastened with the bottom surface and the vertical surface of the cutter arbor simultaneously at the shaft end of the cutter arbor through a screw I; the rise angle of the bottom surface, on which the blades are mounted, of the cutter arbor is 5 DEG to 20 DEG; a bearing III is installed in a guide wheel and fixed at the shaft end of the cutter arbor through a screw II; a fastening locking nut and a guiding plate are installed in the threaded sleeve; and the bottom surface of the guiding plate is tangent to the circular arcs of the blades. The corner milling device is connected with the tool through threads, realizes the milling operation, and is the matched product for pneumatic tools and electric tools.

Description

The milling angle device

Technical field

The utility model belongs to the machining equipment field, relates to a kind of milling angle device, is particularly useful for and pneumatic tool, the supporting use of electric tool, can accomplish the milling process to metal material or nonmetallic materials sheet material corner angle.

Background technology

At present, steel plate corner angle abate is generally used pneumatic beveler in industries such as boats and ships, bridge, steel constructions, this be a kind of with the angle air grinder (hereinafter to be referred as: instrument) repacking product.The defective that this product exists is the output shaft that tool interior is installed spiral bevel gear to be extended simply form knife bar; Three carbide chips are being installed away from the axle head of bearing; The function of instrument is changed into the carbide chip peripheral milling by the cross grinding of grinding wheel, because Milling Force is greater than grinding force, and the distance of Milling Force initial point to bearing is greater than the two bearings spacing; This has aggravated the load of axle undoubtedly; Cause the place, minimum diameter pillow block rank of axle very easily to fracture, it is loosening, fragile that the vibration that produces during milling simultaneously causes blade to be prone to, roughness of machining surface.Because knife bar and output shaft are integrated, minimum diameter axial section excess load frangible; No matter gear drive or blade is installed which is partly damaged all and will upgrade.Milling is unstable and vibration that produce very easily causes breaks down, and service life is short.Processing back rough surface.Unconventional manual work, material waste are greatly.And use at this machine only, can not be general with other instruments.

Summary of the invention

The utility model problem to be solved is, overcomes the deficiency of prior art, and a kind of milling angle device is provided, and is connected with instrument through screw thread, realizes milling operation, is the product that matches with pneumatic tool, electric tool.

The utility model solves its technical problem and takes following technical scheme to realize:

A kind of milling angle device that provides according to the utility model; Comprise knife bar, lock tube, bearing, positioning disk, directive wheel and blade; Described lock tube is connected with the output shaft of instrument, and knife bar is connected fixing back tightening with the output shaft of instrument, and bearing one is packed into behind the locknut bearing block with locknut four tightenings; Bearing two is packed into behind the thread bush with locknut two tightenings, reinstalls behind the locknut bearing block with locknut three tightenings; The locknut bearing block is connected with instrument and compresses bearing four end faces, and with locknut one tightening, bearing one is contained on the pedestal of knife bar synchronously; At the knife bar axle head with screw one with blade and knife bar bottom surface, facade tightening simultaneously; Bearing three is packed into and is fixed on the knife bar axle head with screw two behind the directive wheel, tightening locknut, the positioning disk thread bush of packing into.

It is to take following technical scheme further to realize that the utility model solves its technical problem:

The bottom surface of aforesaid positioning disk and the circular arc of blade are tangent.

Aforesaid blade is three blades, and the bottom surface lift angle that knife bar is installed blade is 5 °～20 °.

The utility model compared with prior art has significant advantage and beneficial effect:

Because utility model only is connected with output shaft, the shell of instrument, not related with the generation of tool interior structure, stopped to avoid fractureing because of excess load because of function changes the influence to the minimum diameter axle; Can be separately when conventional maintenance maintains changing knife rod more.Knife bar is fixed on the stability of guaranteeing milling in the bearing inner race.Improved blade tightness and impact resistance, prolonged the service life of blade, improved surface roughness, made the surface finishing after the processing.Can be supporting through adjustment with pneumatic tool, electric tool, enlarged the scope of application.Stop dismounting maintenance unnecessary, practiced thrift work time cost, increased work efficiency, reduced cost, increased benefit.

Description of drawings

Fig. 1 mills circular arc semi-section structural representation for the utility model.

Fig. 2 mills the arc structure sketch map for the utility model.

Fig. 3 mills oblique angle semi-section structural representation for the utility model.

Fig. 4 mills the oblique angle structure sketch map for the utility model.

Wherein: 1, the output shaft 21 of knife bar 2, lock tube 3, locknut 1, locknut bearing block 5, locknut 26, bearing 1, bearing 28, tightening locknut 9, locknut 3 10, thread bush 11, positioning disk 12, locknut 4 13, blade 14, screw 1, directive wheel 16, bearing 3 17, screw 2 18, sheet material 19, instrument 20, instrument, bearing four

The specific embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment, structure, characteristic and the effect thereof that provides according to the utility model, specify as after.

A kind of milling angle device shown in Fig. 1～4; Comprise knife bar, lock tube, bearing, positioning disk, directive wheel and blade; Described lock tube 2 is connected with the output shaft 20 of instrument, and knife bar 1 is connected fixing back tightening with the output shaft of instrument, and bearing 1 is packed locknut bearing block 4 backs into locknut 4 12 tightenings; Bearing 27 is packed thread bush 10 back into locknut 25 tightenings, reinstalls behind the locknut bearing block with locknut 39 tightenings; The locknut bearing block is connected with instrument 19 and compresses bearing 4 21 end faces, and with locknut one 3 tightenings, bearing one is contained on the pedestal of knife bar 1 synchronously; At the knife bar axle head with screw 1 with blade 13 and knife bar bottom surface, facade tightening simultaneously; Blade is three blades, and the bottom surface lift angle that knife bar is installed blade is 5 °～20 °; Bearing 3 16 directive wheel 15 back of packing into is fixed on the knife bar axle head with screw 2 17, tightening locknut 8, positioning disk 11 thread bush 10 of packing into, and the bottom surface of positioning disk and the circular arc of blade are tangent, proofread back tightening.

The composite design that the utility model employing offset and sword face lift angle are 5 °～20 °:

Also must make two sides of blade 13 and two facade tightenings of knife bar 1 when (1) offset is meant screw 1 with the 1 bottom surface tightening of blade 13 and knife bar.Realize purpose through micro-offset in brief with the tightening simultaneously of 3 faces.

(2) because two-sided can the use of the circular arc sword of blade 13 (or straight sword), so edge clearance angle is 0 °.

5 °～20 ° of the bottom surface lift angles of the utility model knife bar 1 design and installation blade 13, so just forming blade 13 its circular arc sword back angles of installation back is 5 °～20 °, sharp, intensity is two to be taken into account.

To (1), (2) interdependence and utilize 1 * 120 ° of V-type of blade to hold the design feature of 1 * 45 ° of chamfering at bits groove, two ends, φ 5 hole, the composite design generation of meeting the tendency.

The structure of blade: (carbide alloy)

(1) overall dimensions: length * wide * thick=12.7 * 12.7 * 5.

(2) each 1 * 45 ° of chamfering of centre bore: φ 5, two nose ends.

(3) circular arc: R2 ~ 3 * 4.

(4) blade: hold the bits groove and be 1 * 120 ° of V-type, encircle that two horizontal edges and facade are crossing to form.

(5) main cutting edge: 4 of single faces, 8 on two sides.

Operation principle:

Drive knife bar rotation down at the instrument output shaft, three blades that are installed on the knife bar rotate simultaneously, and at the uniform velocity pass along sheet material 18 adjacent two horizontal edges and carry out milling along with positioning disk, directive wheel, reach the purpose of milling corner angle, the completion chamfer angle technique.

Claims

1. milling angle device; Comprise knife bar, lock tube, bearing, positioning disk, directive wheel and blade; It is characterized in that: described lock tube (2) is connected with the output shaft (20) of instrument; Knife bar (1) is connected fixing back tightening with the output shaft of instrument, bearing one (6) is packed locknut bearing block (4) back into locknut four (12) tightenings; Bearing two (7) is packed thread bush (10) back into locknut two (5) tightenings, reinstalls behind the locknut bearing block with locknut three (9) tightenings; The locknut bearing block is connected with instrument (19) and compresses bearing four (21) end faces, and with locknut one (3) tightening, bearing one is contained on the pedestal of knife bar synchronously; At the knife bar axle head with screw one (14) with blade (13) and knife bar bottom surface, facade tightening simultaneously; Pack into directive wheel (15) back of bearing three (16) is fixed on the knife bar axle head with screw two (17), tightening locknut (8), positioning disk (11) thread bush (10) of packing into.

2. milling angle device according to claim 1 is characterized in that: the bottom surface of described positioning disk and the circular arc of blade are tangent.

3. milling angle device according to claim 1 is characterized in that: described blade is three blades, and the bottom surface lift angle that knife bar is installed blade is 5 °～20 °.