CN207642377U - A kind of deburrer - Google Patents

Abstract

The utility model provides a kind of deburrer, it is with handle of a knife and the cutter head being fixed on the handle of a knife, cutter head provided by the utility model is spiral by surrounding centrosymmetric three knife-edges, in this way in molding drilling, cutter head is stretched into the drilling, rotate three blades, burr around drilling is scraped off, it is provided with chip space between each two blade, after three blade rotations scrape off the burr around drilling, chip space is fallen into, in three blade rotation processes, with gravity, fallen along chip space.Therefore deburrer provided by the utility model can effectively remove the flanging burr in drilling exit, and the Tool Design is succinct, and manufacturing cost is low, is conducive to cost control；In addition deburrer does not damage the surface of machined part, ensure that part processing quality and technological requirement in this way from center withdrawing after drill center feed, completion deburring.

Description

A kind of deburrer

Technical field

The utility model is related to machine drilling field more particularly to a kind of deburrers.

Background technology

Turbocharged engine bent axle material is forged steel, and hardness is high, good toughness, in high-volume High-speed machining, to cutter Machining accuracy, quality, cutting ability have very high requirement.The defect of one very little is all likely to that quality of lot is caused to ask Topic.Crankshaft flange side hole processing is a kind of typical processing, and especially bent axle is more demanding for cleannes, and subsequently goes Burr technique is limited to deburring ability herein, such as remains flanging burr, there are iron filings during engine assembly to enter axis Watt risk, cause bent axle locking, engine abnormal noise that can have the risk that engine is scrapped when serious.In current bent axle method In blue hole processing, being drilled using common carbide drill cutter, follow-up screw tap processes screw thread, in drilling exit, Bore edges are easy to form outside flanging burr, and subsequent screw tap processing can remove a part of flange, but still have more burr Remain at hole exits.

Utility model content

The utility model provides a kind of deburrer, the flange for the formation that drills for solving above-mentioned on engine crankshaft Quality problems caused by burr.

In view of the above and other objects, the utility model provides a kind of deburrer, there is handle of a knife and be fixed on described Cutter head on handle of a knife, the cutter head is spiral by surrounding centrosymmetric three knife-edges, is provided between each two blade Chip space.

Preferably, the cutting face of the blade is located at the side of the cutter head.

Preferably, the cutting edge of the blade is 45 °.

Preferably, the cutter head has anterior angle.

Preferably, being connected by connector between the cutter head and the handle of a knife.

Preferably, the chip space extends to the connector from the cutter head.

Preferably, being gradually reduced from the width of chip space described in the direction of connector described in cutter head knife.

Preferably, the axis direction antarafacial of the extending direction of the chip space and the connector.

Preferably, the diameter of the connector is less than the head outer diameter, the cutter head and the connector junction It is provided with chamfering.

Preferably, the cutter head uses hard alloy material.

Compared with prior art, the beneficial effects of the utility model are：The utility model provides a kind of deburrer, With handle of a knife and the cutter head being fixed on the handle of a knife, cutter head provided by the utility model is by surrounding centrosymmetric three blades It forms helical form to stretch into cutter head in the drilling in this way in molding drilling, rotates three blades, around drilling Burr scrape off, be provided with chip space between each two blade, after the rotation of three blades scrapes off the burr around drilling, fall Enter chip space, in three blade rotation processes, with gravity, is fallen along chip space.Therefore the utility model provides Deburrer has the following advantages：

1. this deburrer can effectively remove the flanging burr in drilling exit, and the Tool Design is succinct, manufacture It is at low cost, be conducive to cost control；

2. this deburrer, from center withdrawing, does not damage machined in this way after drill center feed, completion deburring The surface of part ensure that part processing quality and technological requirement.

Description of the drawings

Fig. 1 is the structural schematic diagram of deburrer provided by the utility model；

Fig. 2 is the structural schematic diagram of cutter head provided by the utility model and connector；

Fig. 3 is the cutter head structure schematic diagram of deburrer provided by the utility model；

Fig. 4 is deburrer operating diagram provided by the utility model.

In figure：1- cutter heads, 11- blades, 12- chip spaces, 2- connectors, 21- chamferings, 22- first segments, 23- second segments, 3- Handle of a knife.

Specific implementation mode

To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings to this The specific implementation mode of utility model is described in detail.

Please refer to Fig. 1, the utility model provides a kind of deburrer, from right to left respectively handle of a knife 3, connector 2 with And cutter head 1, Fig. 3 is please referred to, the cutter head 1 is whole cylinder, and helical form is formed by surrounding centrosymmetric three blades 11, Angle between the cutting edge of each blade 11 is 45 ° namely two sides of blade 11 is 45 °, the cutting face of each blade 11 Positioned at the side of cylinder, when cutter head 1 rotates, three blades 11 rotate simultaneously, and centrifugal force is converted to form cutting force.

Preferably, cutter head 11 is designed with anterior angle, and cutting edge processing is done, it is ensured that cutting edge strength, cutter head 1 are closed using hard Gold.

Please continue to refer to Fig. 1 to Fig. 3, chip space 12, two chip spaces are provided between each two blade 11 on cutter head 1 12 cell wall is the side of two adjacent blades 11, and chip space 12 extends from cutter head 1 to connector 2, extends to connector 2 First segment 22, the extending direction of chip space 12 and the axis direction antarafacial of connector 2, as shown in Fig. 2, when the cutter level is put When setting, the extending direction for being located at the chip space 12 of side is downward, in addition from cutter head 1 to the direction of first segment 22, chip space 12 Width is gradually reduced.

Please emphasis with reference to Fig. 2, connector 2 divides for first segment 22 and second segment 23, and first segment 22 is connect with cutter head 1, second Section 23 is connect with handle of a knife 3, and the diameter of first segment 22 is less than the diameter of cutter head 1, and the diameter of second segment 23 is more than the straight of first segment 22 Diameter, this is to be avoided meticulous connector 2 from being easy to fracture in use to reinforce the intensity of connector 2.

Chamfering 21 is arranged in the junction of first segment 22 and cutter head 1, and first segment 22 and 23 junction diameter of second segment become Change, is also provided with chamfering 21.

Fig. 4 is please referred to, using cutter provided by the utility model when removing flanging burr, cutter head 1 can be made introversive from drilling Drilling hole oral area stretches out, rotary cutter 1 so that three blades 11 rotate, and when rotation is eccentric processing, and three contacts of blades 11 are bored Hole hole inner circumferential, three blades 11 cut flanging burr in rotary course, and flanging burr falls to chip space 12 after being cut It is interior, Fig. 1 is please referred to, the width of chip space 12 is gradually reduced, and the extending direction of chip space 12 is gradually downward, then after being cut Flanging burr is gradually gathered along chip space 12 to be fallen, and after the flanging burr of drilling is all cut, cutter head 1 is along backtracking Withdrawing.

The utility model provides a kind of deburrer, with handle of a knife 3 and the cutter head 1 being fixed on the handle of a knife 3, originally The cutter head 1 that utility model provides forms helical form by surrounding centrosymmetric three blades 11, in this way in molding drilling It is interior, cutter head 1 is stretched into the drilling, three blades 11 are rotated, the burr around drilling is scraped off, is set between each two blade 11 It is equipped with chip space 12, after three rotations of blade 11 scrape off the burr around drilling, chip space 12 is fallen into, in three blades 11 In rotation process, with gravity, fallen along chip space 12.Therefore deburrer provided by the utility model have with Lower advantage：

1. this deburrer can be effectively removed the flanging burr in drilling exit, and the Tool Design is succinct, system It makes at low cost, is conducive to cost control, it is about 50% that the probability of flanging burr, which occurs, in original drill bit processing, is thoroughly disappeared after improvement , can be with 100% removal in addition to the problem, the cutter life of drill bit is promoted to 400 by original 200, separate room cost by 1.8RMB is down to 0.9RMB.Due to disposable about 50,000 yuan of the input of handle of a knife 3, the separate room cost about 0.2RMB of deburrer.Therefore 0.7 yuan/part of the practical annual saving cost of charp tool × 400,000/year=280,000/year；

2. this deburrer, from center withdrawing, does not damage machined in this way after drill center feed, completion deburring The surface of part ensure that part processing quality and technological requirement.Obviously, those skilled in the art can to utility model into Spirit and scope of the various modification and variations of row without departing from the utility model.If these modifications and variations of the present invention Belong to the scope of the claims of the present invention and its equivalent technology, then the utility model be also intended to include these change and Including modification.

Claims (4)

1. a kind of deburrer, which is characterized in that with handle of a knife and the cutter head being fixed on the handle of a knife, the cutter head is by enclosing It is spiral around centrosymmetric three knife-edges, chip space is provided between each two blade, the cutting edge of the blade is 45 °, the cutter head has anterior angle, is connected by connector between the cutter head and the handle of a knife, and the chip space is from the knife Head extends to the connector, the axis direction antarafacial of the extending direction of the chip space and the connector, the connector Diameter be less than the head outer diameter, the cutter head and the connector junction are provided with chamfering.

2. deburrer as described in claim 1, which is characterized in that the cutting face of the blade is located at the side of the cutter head Face.

3. deburrer as described in claim 1, which is characterized in that from chip removal described in the direction of connector described in cutter head knife The width of slot is gradually reduced.

4. deburrer as described in claim 1, which is characterized in that the cutter head uses hard alloy material.