CN212443385U

CN212443385U - Aluminum casting machining tool

Info

Publication number: CN212443385U
Application number: CN202021304355.7U
Authority: CN
Inventors: 张鹏; 庄铮; 甘丹强
Original assignee: Zhanjiang Deni Vehicle Parts Co ltd
Current assignee: Zhanjiang Deni Vehicle Parts Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-02-02
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a cast aluminum product processing cutter has four processing positions of first spiral section, second spiral section, changeover portion and sword terminal surface, can process the cast aluminum product burr of different positions. The distance from the first spiral section to the axial lead of the cutter arbor body is greater than the distance from the second spiral section to the axial lead of the cutter arbor body, so that the aluminum casting has different aperture processing ranges, and meanwhile, the first spiral section can be processed to avoid the second spiral section to contact with a workpiece and increase the stress of the aluminum casting, and the aluminum casting is prevented from being deformed. Extend to the helicla flute of the terminal surface of the cutter arbor body, both make cast aluminium spare processing cutter spiral cutting edge be convenient for dispel the heat, be favorable to forming strip aluminium bits, reduce the production of tiny granule, reduce the granule impact damage that cast aluminium spare cutter received, be convenient for take away the aluminium bits that spiral cutting edge optional position produced again.

Description

Aluminum casting machining tool

Technical Field

The utility model belongs to the technical field of machining, concretely relates to processing cutter.

Background

At present, a front housing die casting of an engine adopts an aluminum casting; in the production process, the die casting of the front cover shell of the engine produced by the die casting machine needs to be subjected to work such as sprue removal, overflow port removal, parting line burrs, ejector rod burrs, date identification burrs, orifice burrs, hole internal separation skin removal and the like, so that the appearance quality and the non-processing part structure of the die casting can be guaranteed to meet the drawing requirements and meet the conditions of subsequent processing. Fig. 1 shows orifice burrs and the internal parting skin, gate, parting line burrs, ejector pin burrs, overflow ports therein, wherein the internal parting skin is also commonly classified as one of the burrs. For the die casting made of aluminum, the large-area part of the die casting is easy to deform under stress or sharp impact and extrusion, but the raised and burred parts on the edge are extremely hard, so that great difficulty in cleaning is brought. According to the engine front cover die casting, the number of burrs (including hole inner separation skins) of an aluminum casting is large, the positions of the burrs are variable, more burrs are located on a large-area plane which is easy to deform, and one part of the burrs is located at a position which is easy to generate structural interference, so that the difficulty in cleaning is brought.

At present, aiming at the die casting of the front housing of the engine, the burrs of the die casting of the front housing of the engine are generally removed by adopting traditional manual tools at home and abroad, such as a pneumatic angle grinder, a pneumatic belt sander, a file, a scraper, a punch, an auxiliary tool and the like, the tools need manual reciprocating operation, and the uniformity of the die casting of the front housing of the engine cannot be ensured; the front housing die casting of the engine often has the phenomena of surface contusion, orifice burr, hole inner separation skin leakage cleaning and the like, so that batch reworking is caused, and quality risk exists; the cleaning efficiency is low; the number of cleaning personnel is large, and the cost is high; when the tool is used, dust with fine particles is generated, so that the environment is polluted, and the health of an operator is harmed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a cast aluminium spare processing cutter to solve the problem of cast aluminium spare die-casting back burr clearance difficulty.

In order to achieve the purpose, the utility model discloses realize according to following technical scheme:

a cutter for machining an aluminum casting comprises a cutter arbor body, wherein at least two spiral cutting edges are arranged on the side surface of the cutter arbor body, each spiral cutting edge comprises a first spiral section and a second spiral section extending to the end surface of the cutter arbor body, and each second spiral section is provided with an edge end surface arranged on the end surface of the cutter arbor body; the distance from the first spiral section to the axis of the cutter arbor body is greater than the distance from the second spiral section to the axis of the cutter arbor body; the spiral cutting edge also comprises a transition section, two ends of the transition section are respectively connected with the first spiral section and the second spiral section, and the distance from the transition section to the axial lead of the cutter arbor body is gradually increased along the direction far away from the second spiral section; all be equipped with the helicla flute between arbitrary two the spiral cutting edge, the helicla flute is followed the spiral direction of spiral cutting edge extends, the helicla flute extends to the terminal surface of the cutter arbor body.

Preferably, the edge surface extends in a radial direction of the cutter arbor body, and the edge surface is distant from the end surface of the cutter arbor body in a spiral direction of the spiral cutting edge.

Preferably, the blade end surface comprises a first blade surface and a second blade surface, the first blade surface and the cross section of the cutter arbor body form a first included angle, the second blade surface and the cross section of the cutter arbor body form a second included angle, and the second included angle is larger than the first included angle.

Preferably, a ratio of a central angle of two circumferentially farthest points of the spiral groove on any cross section of the tool shank to a central angle of two circumferentially farthest points of the spiral cutting edge on the cross section is 3 or more and 4 or less.

Preferably, the diameter of the first helical section is 13 to 15 mm.

Preferably, the diameter of the second helical section is 5 to 7 mm.

Preferably, a ratio of a distance from the first helical section to an axial line of the arbor body to a distance from the second helical section to the axial line of the arbor body is not less than 2 and not more than 3.

Preferably, a cutting part and an avoiding part are respectively arranged on two sides of the first spiral section, and both the cutting part and the avoiding part extend along the spiral direction of the first spiral section.

Preferably, the avoiding portion is a recess formed in the first spiral section, the avoiding portion extends to the cutting portion, and the avoiding portion gradually decreases in a direction toward the cutting portion.

Preferably, the tool holder body is provided with a connecting section for connection to a machine tool.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the aluminum casting machining cutter is provided with four machining parts, namely a first spiral section, a second spiral section, a transition section and a blade end face, and can machine aluminum casting burrs at different positions. The distance from the first spiral section to the axial lead of the cutter arbor body is greater than the distance from the second spiral section to the axial lead of the cutter arbor body, so that the aluminum casting has different aperture processing ranges, and meanwhile, the side face of the second spiral section can be prevented from contacting with a workpiece to increase the stress of the aluminum casting when the first spiral section is processed, and the aluminum casting is prevented from being deformed. Extend to the helicla flute of the terminal surface of the cutter arbor body, both make cast aluminium spare processing cutter spiral cutting edge be convenient for dispel the heat, be favorable to forming strip aluminium bits, reduce the production of tiny granule, reduce the granule impact damage that cast aluminium spare cutter received, be convenient for take away the aluminium bits that spiral cutting edge optional position produced again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic illustration of an engine front cover die casting burr (with an internal parting skin).

Fig. 2 is a schematic structural diagram of an embodiment of the aluminum casting machining tool of the present invention.

Fig. 3 is a partially enlarged view of a position a in fig. 2.

Fig. 4 is a cross-sectional view of position B in fig. 2.

Wherein:

1000-cutter arbor body, 1100-spiral cutting edge, 1110-first spiral section, 1120-second spiral section, 1121-edge face, 1130-transition section, 1200-spiral groove, 1122-first edge face, 1123-second edge face, 1111-cutting part, 1112-avoiding part, 1300-connecting section, 1400-first included angle and 1500-second included angle.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 2, 3 and 4, the aluminum casting machining tool is used for machining aluminum castings and comprises a tool bar body 1000, wherein the tool bar body 1000 is made of a hard alloy coating material, and at least two spiral cutting edges 1100 are arranged on the side surface of the tool bar body 1000. In this embodiment, the cutter bar body 1000 is a cylinder and has 4 helical cutting edges 1100. The helical cutting edge 1100 includes a first helical section 1110, a second helical section 1120 extending to the end face of the cutter arbor body 1000. Both sides on first spiral section 1110 are equipped with cutting portion 1111 and dodge portion 1112 respectively, and cutting portion 1111 and dodge portion 1112 all extend along the spiral direction of first spiral section 1110, dodge portion 1112 that extends along the spiral direction for first spiral section 1110 effectively reduces the dynamic contact with the work piece, has reduced the shearing force that cast aluminium spare processing cutter received, has improved cast aluminium spare processing cutter's life-span. The avoiding part 1112 is a recess arranged on the first spiral section 1110, the avoiding part 1112 extends to the cutting part 1111, and the avoiding part 1112 is gradually reduced along the direction towards the cutting part 1111, so that the dynamic contact between the first spiral section 1110 and the workpiece can be further reduced, and the service life of the tool is better prolonged.

The second spiral section 1120 is provided with an edge end surface 1121 arranged on the end surface of the cutter arbor body 1000, the edge end surface 1121 extends along the radial direction of the cutter arbor body 1000, the edge end surface 1121 is far away from the end surface of the cutter arbor body 1000 along the spiral direction of the spiral cutting edge 1100, the processed part of the die-cast aluminum part is effectively prevented from impacting the die-cast aluminum part processing cutter, and the probability that the die-cast aluminum part processing cutter is damaged is reduced. The cutting edges of the first spiral section 1110, the second spiral section 1120 and the transition section 1130 are all designed to be 45 degrees, and the cutting edge of the edge surface is designed to be 90 degrees. The blade end surface 1121 includes a first blade surface 1122 and a second blade surface 1123, the first blade surface 1122 has a first included angle 1400 with the cross-section of the arbor body 1000, the second blade surface 1123 has a second included angle 1500 with the cross-section of the arbor body 1000, and the second included angle 1500 is greater than the first included angle 1400. The first included angle 1400 and the second included angle 1500 are arranged, so that the strength of the aluminum casting machining tool is protected through the smaller first included angle 1400, and the extrusion force of the workpiece on the aluminum casting machining tool is reduced through the larger second included angle 1500, so that the service life is prolonged.

The distance from the first spiral section 1110 to the axis of the cutter bar body 1000 is greater than the distance from the second spiral section 1120 to the axis of the cutter bar body 1000; the helical cutting edge 1100 further comprises a transition section 1130, two ends of the transition section 1130 are respectively connected with the first helical section 1110 and the second helical section 1120, and the distance from the transition section 1130 to the axis line of the tool shank 1000 gradually increases along the direction away from the second helical section 1120; a spiral groove 1200 is formed between any two spiral cutting edges 1100, the spiral groove 1200 extends along the spiral direction of the spiral cutting edges 1100, and the spiral groove 1200 extends to the end face of the cutter arbor body 1000. As shown in fig. 4, the central angle of the two circumferentially farthest points of the spiral groove 1200 on any cross section of the arbor 1000 is an angle M, the central angle of the two circumferentially farthest points of the spiral cutting edge 1100 on the cross section is an angle N, and the ratio of the angle M to the angle N is equal to or greater than 3 and equal to or less than 4. Thus, the helical cutting edge 1100 has sufficient strength to machine burrs and bore septa, and also provides the tool shank 1000 with a sufficiently large helical groove 1200.

The ratio of the distance from the first spiral section 1110 to the axial lead of the cutter bar body 1000 to the distance from the second spiral section 1120 to the axial lead of the cutter bar body 1000 is greater than or equal to 2 and less than or equal to 3, in this embodiment, the diameter of the first spiral section is 13 to 15 mm, and the diameter of the second spiral section is 5 to 7 mm; when the machining tool for the aluminum casting is used for cutting the inner skin of the machined hole, strip-shaped aluminum scraps are convenient to form, and the strip-shaped aluminum scraps machined by the second spiral section 1120 can smoothly enter the spiral groove 1200 between the first spiral sections 1110, so that the aluminum scraps are smoothly discharged; meanwhile, on the premise of ensuring the strength of the second spiral section 1120, the extrusion between the blade end surface 1121 and the workpiece is reduced, and the processing quality is improved; in addition, the cutter can process thick places such as a pouring gate, an overflow port and the like well, and the cutter can be cleaned quickly by adopting the aluminum casting processing cutter, so that the quality is good and the efficiency is high. The cutter bar body 1000 is provided with a connecting section 1300 for connecting with a machine tool, so that a connecting seam of the cutter bar body 1000 is reduced, and chattering of a cast aluminum part machining cutter in work is better avoided. After the scheme of the embodiment is adopted, 1000000 estimates in the outline of the year can save more than 200 ten thousand yuan of cost investment each year.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims

1. A cutter for machining an aluminum casting is used for machining the aluminum casting and is characterized by comprising a cutter arbor body, wherein at least two spiral cutting edges are arranged on the side surface of the cutter arbor body, each spiral cutting edge comprises a first spiral section and a second spiral section extending to the end surface of the cutter arbor body, and each second spiral section is provided with an edge end surface arranged on the end surface of the cutter arbor body; the distance from the first spiral section to the axis of the cutter arbor body is greater than the distance from the second spiral section to the axis of the cutter arbor body; the spiral cutting edge also comprises a transition section, two ends of the transition section are respectively connected with the first spiral section and the second spiral section, and the distance from the transition section to the axial lead of the cutter arbor body is gradually increased along the direction far away from the second spiral section; all be equipped with the helicla flute between arbitrary two the spiral cutting edge, the helicla flute is followed the spiral direction of spiral cutting edge extends, the helicla flute extends to the terminal surface of the cutter arbor body.

2. The aluminum casting machining tool of claim 1, wherein the edge surface extends in a radial direction of the cutter bar body, and the edge surface is distant from the end surface of the cutter bar body in a spiral direction of the spiral cutting edge.

3. The cast aluminum machining tool of claim 2, wherein the land surface includes a first land and a second land, the first land having a first included angle with a cross-section of the shank body, the second land having a second included angle with the cross-section of the shank body, the second included angle being greater than the first included angle.

4. The tool for machining an aluminum casting as claimed in claim 1, wherein the ratio of the central angle of the two circumferentially farthest points of the spiral groove on any cross section of the tool shank to the central angle of the two circumferentially farthest points of the spiral cutting edge on the cross section is 3 or more and 4 or less.

5. The tool of claim 4, wherein the ratio of the distance from the first helical section to the axial lead of the tool holder body to the distance from the second helical section to the axial lead of the tool holder body is greater than or equal to 2 and less than or equal to 3.

6. The aluminum casting machining tool of claim 5, wherein the first helical section has a diameter of 13 to 15 millimeters.

7. The aluminum casting machining tool of claim 5, wherein the diameter of the second helical section is 5 to 7 millimeters.

8. The aluminum casting machining tool according to any one of claims 1 to 7, wherein a cutting portion and a relief portion are provided on both sides of the first spiral section, respectively, and both the cutting portion and the relief portion extend in a spiral direction of the first spiral section.

9. The aluminum casting machining tool of claim 8, wherein the relief portion is provided as a depression provided in the first spiral section, the relief portion extending to the cutting portion, the relief portion tapering in a direction toward the cutting portion.

10. The aluminum casting machining tool of any one of claims 1 to 7, wherein the cutter bar body is provided with a connecting section for connection to a machine tool.