CN110919052A - Cutter for machining center hole of main shell of automobile steering gear and production method of cutter - Google Patents

Abstract

The invention discloses a cutter for processing a center hole of a main shell of an automobile steering gear and a production method thereof, and the cutter comprises a cutter body and a cutter handle, wherein a water hole is arranged in the cutter body, a central water outlet screw is arranged at the water outlet end of the water hole, a chip groove is arranged at one end of the cutter body, an alloy sheet groove is arranged at the front end of the chip groove, a first blade, a second blade and a third blade are arranged in the alloy sheet groove, the first blade, the second blade and the third blade are uniformly distributed on a core body, the height direction breaking difference of the first blade, the second blade and the third blade is 1.1mm, the diameter direction breaking difference is 1mm, the total length of the cutter is 355mm, the diameter is 30mm, and the slenderness ratio is 11.83. The alloy drill bit with three blades is adopted, the height direction offset of the three blades is 1.1mm, the diameter direction offset of the three blades is 1mm, the cutter does not vibrate when the cutter is used for processing a hole, and the cutter has good rigidity because the total length of the cutter is 355mm, the diameter D30 and the slenderness ratio is 11.8.

Description

Cutter for machining center hole of main shell of automobile steering gear and production method of cutter

Technical Field

The invention relates to a cutter, in particular to a cutter for roughly machining a center hole of a main shell of an aluminum alloy automobile steering gear and a production method thereof.

Background

At present, when a central hole of a traditional main shell is subjected to die casting, cores on two sides of the central hole are oppositely drawn and formed, and the draft angle of a die is set to be minimum, so that when the central hole is machined, most of the holes only need to be machined by a boring machine after casting is completed, and when the central hole is machined by finish machining, only the hole opening part of the whole central hole needs to be machined to meet the requirement, but because the length of the main shell in the aluminum alloy automobile steering gear is 644mm, and the difference between the minimum diameter of the central hole and the hole opening diameter is 0.2mm, the traditional process cannot meet the requirement.

Disclosure of Invention

The invention aims to provide a tool for roughly machining a central hole of a main shell of an aluminum alloy automobile steering gear and a production method thereof, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a processing auto steering ware main casing body centre bore's cutter, includes cutter body and handle of a knife, be equipped with the water hole in the cutter body, the play water end in water hole is equipped with central water screw, the one end of cutter body is equipped with the chip groove, the chip groove front end is equipped with first blade, second blade and third blade, first blade, second blade and third blade evenly distributed are on the core, the direction of height of first blade, second blade and third blade is disconnected poor and is 1.1mm, the diameter direction is disconnected poor and is 1mm, the total length of cutter is 355mm, the diameter is 30mm, the slenderness is 11.83.

The invention is further improved in that: the first blade is provided with a first groove, the height of the first groove is 1.25mm, and the length of the first groove is 3.7 mm.

The invention is further improved in that: the second blade is provided with a second groove, the height of the second groove is 0.6mm, and the length of the second groove is 3.53 mm.

The invention is further improved in that: the core had a diameter of 14 mm.

A production method of a cutter for machining a center hole of a main shell of an automobile steering gear comprises the following steps:

A. blanking: hot-working the die steel material;

B. turning and milling: roughly turning the tool handle, turning the front end of the tool body according to the lathe drawing, and milling a chip groove and an alloy sheet groove;

C. and (3) heat treatment: carrying out external heat treatment at the temperature of 140-;

D. primary sand blasting: spraying silicon carbide on the surface of the cutter;

E. preparing a sheet: matching with a gold sheet, namely performing linear cutting on the alloy sheet;

F. welding: welding the cut alloy sheet in the alloy sheet groove;

G. coarse grinding: roughly grinding a cutter handle of the cutter;

H. drilling an inclined hole: a water hole with the diameter of 3mm is arranged in the cutter body;

I. secondary sand blasting: spraying glass sand on the surface of the cutter;

J. fine grinding: the fine grinding cutter handle grinds the jump belt, namely when PCD fine cutting and PCD fine grinding are carried out, the handle part of the cutter is beaten and the jump belt jumps respectively;

K. fine cutting of PCD: cutting according to the size of the finished product of the drawing, and keeping the grinding allowance of 0.02-0.025;

l, PCD finish grinding: grinding according to the size of a finished product of a drawing;

J. and (3) inspecting and removing a process head: the method is characterized by comprising the following steps of (1) inspecting according to the size of a finished product of a drawing, and removing a front-end process head, wherein the specific process comprises the following steps: line cutting → tool grinding → Fulemmer → grinding.

Compared with the prior art, the invention has the beneficial effects that:

the alloy drill bit with three blades is adopted, the height direction offset of the three blades is 1.1mm, the diameter direction offset of the three blades is 1mm, the cutter does not vibrate when the cutter is used for processing a hole, and the cutter has good rigidity because the total length of the cutter is 355mm, the diameter D30 and the slenderness ratio is 11.8.

Drawings

FIG. 1 is a schematic view of the open state of the present invention;

FIG. 2 is a side view of the cutter body;

FIG. 3 is a schematic view of a three-blade configuration;

FIG. 4 is a schematic view of a first blade;

FIG. 5 is a schematic view of a second blade;

FIG. 6 is a schematic view of a third blade;

fig. 7 is a schematic view of a machining tool.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-6, the present embodiment provides a technical solution: the cutter for processing the center hole of the main shell of the automobile steering gear comprises a cutter body 1 and a cutter handle 2, wherein a water hole 3 is formed in the cutter body 1, a center water outlet screw 4 is arranged at the water outlet end of the water hole 3, a chip groove 5 is formed in one end of the cutter body 1, a first blade 6, a second blade 7 and a third blade 8 are arranged at the front end of the chip groove 5, the first blade 6, the second blade 7 and the third blade 8 are uniformly distributed on a core body 11, the height direction offset of the first blade 6, the second blade 7 and the third blade 8 is 1.1mm, the diameter direction offset is 1mm, the total length of the cutter is 355mm, the diameter is 30mm, and the slenderness ratio is 11.83. The first blade 6 is provided with a first groove 9, and the height of the first groove 9 is 1.25mm, and the length of the first groove 9 is 3.7 mm. The second blade 7 is provided with a second groove 10, and the height of the second groove 10 is 0.6mm and the length is 3.53 mm. The width of the three blades is 7.7mm, the length of the first blade 6 is 31.19mm, the length of the second blade 7 is 30.43mm, and the length of the third blade 8 is 29.59 mm. The core 11 has a diameter of 14 mm.

As shown in fig. 7, a method for producing a tool for machining a central hole of a main housing of an automobile steering gear comprises the following steps: blanking: hot-working the die steel material; turning and milling: roughly turning a tool shank 2, turning the front end of the tool body 1 according to lathe drawing, and milling a chip groove 5 and an alloy sheet groove 12; and (3) heat treatment: carrying out external heat treatment at the temperature of 140-; primary sand blasting: spraying silicon carbide on the surface of the cutter; preparing a sheet: matching with a gold sheet, namely performing linear cutting on the alloy sheet; welding: welding the cut alloy sheet in the alloy sheet groove 12; coarse grinding: a tool shank 2 of the rough grinding tool; drilling an inclined hole: a water hole 3 with the diameter of 3mm is arranged in the cutter body 1; secondary sand blasting: spraying glass sand on the surface of the cutter; fine grinding: the fine grinding cutter handle 2 grinds the jump belt 13, namely, when PCD fine cutting and PCD fine grinding are carried out, the handle part of the cutter is beaten and the jump belt jumps respectively; fine cutting of PCD: cutting according to the size of the finished product of the drawing, and keeping the grinding allowance of 0.02-0.025; fine grinding of PCD: grinding according to the size of a finished product of a drawing; and (3) inspecting and removing a process head: the method is characterized by comprising the following steps of (1) inspecting according to the size of a finished product of a drawing, and removing a front-end process head, wherein the specific process comprises the following steps: line cutting → tool grinding → Fulemmer → grinding.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a cutter of processing auto steering ware main casing body centre bore, includes cutter body (1) and handle of a knife (2), be equipped with water hole (3) in cutter body (1), the play water end in water hole (3) is equipped with central water screw (4), the one end of cutter body (1) is equipped with chip groove (5), its characterized in that: chip groove (5) front end is equipped with alloy blade groove (12), be equipped with first blade (6), second blade (7) and third blade (8) in alloy blade groove (12), first blade (6), second blade (7) and third blade (8) evenly distributed are on core (11), first blade (6) second blade (7) with the direction of height fault of third blade (8) is 1.1mm, and the direction of diameter fault is 1mm, the total length of cutter is 355mm, and the diameter is 30mm, and slenderness ratio is 11.83.

2. The tool for machining the central hole in the main shell of the automobile steering gear as claimed in claim 1, wherein: be equipped with first groove (9) on first blade (6), the height of first groove (9) is 1.25mm, and length is 3.7 mm.

3. The tool for machining the central hole in the main shell of the automobile steering gear as claimed in claim 1, wherein: and a second groove (10) is formed in the second blade (7), the height of the second groove (10) is 0.6mm, and the length of the second groove is 3.53 mm.

4. The tool for machining the central hole in the main shell of the automobile steering gear as claimed in claim 1, wherein: the diameter of the core body (11) is 14 mm.

5. A production method of a cutter for processing a center hole of a main shell of an automobile steering gear is characterized by comprising the following steps: the method comprises the following steps:

A. blanking: hot-working the die steel material;

B. turning and milling: roughly turning a tool handle (2), turning the front end of the tool body (1) according to a lathe drawing, and milling a chip groove (5) and an alloy sheet groove (12);

C. and (3) heat treatment: carrying out external heat treatment at the temperature of 140-;

D. primary sand blasting: spraying silicon carbide on the surface of the cutter;

E. preparing a sheet: matching with a gold sheet, namely performing linear cutting on the alloy sheet;

F. welding: welding the cut alloy sheet in the alloy sheet groove (12);

G. coarse grinding: a tool shank (2) of the rough grinding tool;

H. drilling an inclined hole: a water hole (3) with the diameter of the motor being 3mm is arranged in the cutter body (1);

I. secondary sand blasting: spraying glass sand on the surface of the cutter;

J. fine grinding: the fine grinding cutter handle (2) and the beating belt (13) are ground, namely, when PCD fine cutting and PCD fine grinding are carried out, beating of the cutter handle part and the beating belt are respectively carried out;

K. fine cutting of PCD: cutting according to the size of the finished product of the drawing, and keeping the grinding allowance of 0.02-0.025;

l, PCD finish grinding: grinding according to the size of a finished product of a drawing;

J. and (3) inspecting and removing a process head: the method is characterized by comprising the following steps of (1) inspecting according to the size of a finished product of a drawing, and removing a front-end process head, wherein the specific process comprises the following steps: line cutting → tool grinding → Fulemmer → grinding.

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