CN208341759U

CN208341759U - A kind of depth lumen pore process tool

Info

Publication number: CN208341759U
Application number: CN201820751984.0U
Authority: CN
Inventors: 冯伟
Original assignee: Chengdu Philharmonic Aviation Manufacturing Ltd By Share Ltd
Current assignee: Chengdu Philharmonic Aviation Manufacturing Ltd By Share Ltd
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2019-01-08
Anticipated expiration: 2028-05-21

Abstract

The utility model relates to a kind of deep lumen pore process tools, including knife handle, knife bar and blade, one end of knife bar is connect with knife handle, the other end is equipped with tool apron, and blade is mounted on tool apron, and knife handle and knife bar are integrally formed, the cross section profile of knife bar is made of the circular arc of two sections of identical sizes, and the circular arc is minor arc, the installation direction of blade is identical as the short-axis direction of knife bar cross section profile, the length L of knife bar and the ratio between the long axis a: 8≤L/a≤12 of knife bar cross section profile.Utility model has the advantages that the cross section profile of knife bar is two sections of circular arcs, long axis direction is to cut main Impact direction, short-axis direction is that stress is smaller and radial direction, cutter can extend into oral area hole the function of guaranteeing bore hole and chip removal, while ensure that cutter integral rigidity, by reducing cutting feed rate and the depth of cut, the problem of may make boring with tool vibration to play knife is thoroughly resolved, tool sharpening is high-efficient, and the qualification rate of product processing meets production requirement 99% or more.

Description

A kind of depth lumen pore process tool

Technical field

The utility model relates to borer technical field, especially a kind of deep lumen pore process tool.

Background technique

Certain aviation type component, material are steel alloy 30CrMnSiNi2A, and specific structure is as shown in Figure 1, include deep chamber The small tripe in hole, i.e. mouth is big, and mouth diameters areDeep lumen pore diameter isThe length of deep lumen pore is 133mm, Oral area length is 46 ± 0.4mm.Traditional handicraft Scheme Choice turnery processing, design internal lathe-tool, clamping lathe tool length 60~ 70mm along with deep lumen pore length and oral area length, lathe tool knife bar total length about 260mm, while considering the aperture oral area φ 20mm Evacuation and chip removal, knife bar diameter about 13mm, so that internal lathe-tool rotation extending portion divides draw ratio to be (260-60)/13 ≈ 15.38, due to Draw ratio super large is easy to produce vibration in lathe tool turning process and plays knife, and aperture size and roughness all not can guarantee.Afterwards again to work Skill improves, using special warfare --- Electrolyzed Processing, i.e., based on the anodic solution principle in electrolytic process and by means of at The cathode of type, a kind of process that workpiece is formed by certain shapes and dimensioned, but Electrolyzed Processing need to use electrode, electricity Pole is lossy in process, and processing aperture φ 28 is not easy to guarantee, high failure rate, the single-piece work time needs 2 to 3 days, electricity It is low to solve processing efficiency.

Utility model content

The shortcomings that the purpose of the utility model is to overcome the prior arts provides a kind of high in machining efficiency, product qualification rate High deep lumen pore process tool.

The purpose of this utility model is achieved through the following technical solutions: a kind of depth lumen pore process tool, including knife handle, knife One end of bar and blade, the knife bar is connect with knife handle, and the other end is equipped with tool apron, and the blade is mounted on tool apron, the knife Handle and knife bar are integrally formed, and the cross section profile of the knife bar is made of the circular arc of two sections of identical sizes, and the circular arc is minor arc, institute The installation direction for stating blade is identical as the short-axis direction of knife bar cross section profile, length L and the knife bar cross section profile of the knife bar The ratio between long axis a: 8≤L/a≤12.

Further, the angle β between the rake face of the blade and the front end face of tool apron is between 91 °~100 °.

Further, the length of the knife bar is 185mm, and the long axis a of the knife bar is 18.03mm, the knife bar it is short Axis b is 13mm, and the radius of the circular arc is 9.5mm, and the distance of center circle of two sections of circular arcs is 6mm.

Further, the knife handle is column construction, and the diameter of knife handle is greater than the long axis a of knife bar.

Further, the knife bar and knife handle eccentric setting.

Further, the knife handle and knife bar are made of cemented carbide material.

The utility model has the advantage that

1, the lever structure of the utility model, which uses, is similar to oval structure, that is, uses cross section profile for two sections of circular arcs, As far as possible close to oral area bore dia, short axle minimizes long axis, the short-axis direction phase of the installation direction and knife bar cross section profile of blade Together, so that long axis direction is to cut main Impact direction, short-axis direction is that stress is smaller and cutter diametrically direction of feed, both examines Considering cutter can extend into oral area hole the function of guaranteeing bore hole and chip removal, it is contemplated that cutter integral rigidity, so that cutter exists It is small to play knife amount for vibration in process, while by reducing cutting feed rate and the depth of cut, boring with tool may make to vibrate bullet The problem of knife, is thoroughly resolved.

2, the tool sharpening single products of the utility model only need 6 to 7 hours, compared to Electrolyzed Processing, greatly mention High production efficiency, while Electrolyzed Processing is avoided because of export license, aperture is not easy the problem of guaranteeing, the qualification rate of product processing 99% or more, meet production requirement.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of product to be processed；

Fig. 2 is the structural schematic diagram of the utility model process tool；

Fig. 3 is in Fig. 2 along A-A schematic cross-sectional view；

In figure: 1- knife handle, 2- knife bar, 3- tool apron, 4- blade.

Specific embodiment

The utility model is further described with reference to the accompanying drawing, but the protection scope of the utility model is not limited to It is as described below.

As shown in Figures 2 and 3, a kind of deep lumen pore process tool, including knife handle 1, knife bar 2 and blade 4, the knife bar 2 One end is connect with knife handle 1, and the other end is equipped with tool apron 3, and the blade 4 is mounted on tool apron 3, and preferably, blade 4 passes through spiral shell Nail is locked on tool apron 3, can be after blade 4 wears and scraps, the replacement easy to disassemble of blade 4, and knife handle 1 and knife bar 2 make Increased substantially with rate, the knife handle 1 is integrally formed with knife bar 2, the cross section profile of the knife bar 2 by two sections of identical sizes circle Arc composition, and the circular arc is minor arc, central angle corresponding to the minor arc i.e. circular arc is less than 180 °, the installation direction of the blade 4 It is identical as the short-axis direction of 2 cross section profile of knife bar, the length L of the knife bar 2 and 2 cross section profile of knife bar the ratio between long axis a: 8≤ L/a≤12。

Further, as shown in Figure 1, angle β between the rake face of the blade 4 and the front end face of tool apron 3 91 °~ Between 100 °, when processing deep lumen pore, the point of a knife of blade 4 is contacted with workpiece to be machined, prevents from generating cutter when bore hole along axial Resistance extend the service life of blade 4 so as to be effectively reduced 4 local temperature of blade.

Further, in the present embodiment, preferably, the length of the knife bar 2 is 185mm, the length of the knife bar 2 Axis a is 18.03mm, and the short axle b of the knife bar 3 is 13mm, and the radius of the circular arc is 9.5mm, and the distance of center circle of two sections of circular arcs is 6mm。

Further, the knife handle 1 is column construction, and the diameter of knife handle 1 is greater than the long axis a of knife bar 2, due to knife handle 1 For machine tool chief axis retaining part, knife handle 1 simultaneously does not have to protrude into oral area hole, and it is steady can to improve clamping by increasing the diameter of knife handle 1 It is qualitative.

Further, as shown in Figure 1, the knife bar 2 and 1 eccentric setting of knife handle, knife bar 2 are biased to it in oral area hole always Chip removal is convenient in the side of axis.

Further, the knife handle 1 and knife bar 2 are made of whole hard alloy material.

The process of deep lumen pore is as follows:

S1, inspection: checking that the raw material trade mark, blank surface have no significant defect, and checks part drawing number, quality number；

S2, general vehicle one: specifically includes the following steps:

S21, according to drawing requirement light end face, one end centering wherein；

S22,47.5 ± 0.1mm of turning φ；

S23, cutting guarantee 202 ± 0.2mm of overall length；

S24,60 ° of vehicle both ends chamfering；

S3, gun drilling: beating deep hole from the side in non-stop layer hole, guarantees 18 ± 0.1mm of diameter phi, deep 176.5 ± 0.2mm；

S4, general vehicle two: specifically includes the following steps:

S41, according to drawing requirement, the first thick drilling of the hole φ 13mm is reversed end for end centering outer circle φ 47.5mm and is jumped to 10 ± 0.2mm of φ Dynamic≤0.03mm, bore hole 19.5 ± 0.15mm of φ, deep 80~100mm, obtains pilot hole；

S42, again the pilot hole guiding to bore, expand flat-bottom hole with flat bottom bit until 19.5 ± 0.15mm of φ, depth 179.5±

0.5mm；

S43, light end face guarantee 179 ± 0.15mm of hole depth；

S5, general vehicle three: light end face, guarantee entire length is 201 ± 0.2mm, by hole 10 ± 0.2mm of φ boring to 13~φ of φ 13.21mm orifice chamfer；

S6, numerical control turning: use dedicated inner hole boring tool, control revolving speed be 300~1000r/min, feed rate f=10~ 100mm/min, 0.05~2.0mm of bite, boring deep lumen pore diameter according to drawing is 28~φ of φ 28.25mm, and length is 133mm, and guarantee that deep lumen pore distance from bottom end face length is 179 ± 0.5mm, oral area length is 46 ± 0.4mm and roughness Ra3.2.Product is obtained, as shown in Figure 1.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of depth lumen pore process tool, including knife handle (1), knife bar (2) and blade (4), one end of the knife bar (2) and knife handle (1) connect, the other end is equipped with tool apron (3), and the blade (4) is mounted on tool apron (3), it is characterised in that: the knife handle (1) with Knife bar (2) is integrally formed, and the cross section profile of the knife bar (2) is made of the circular arc of two sections of identical sizes, and the circular arc is minor arc, The installation direction of the blade (4) is identical as the short-axis direction of knife bar (2) cross section profile, the length L and knife bar of the knife bar (2) (2) the ratio between the long axis a: 8≤L/a≤12 of cross section profile.

2. a kind of deep lumen pore process tool according to claim 1, it is characterised in that: the rake face of the blade (4) with Angle β between the front end face of tool apron (3) is between 91 °~100 °.

3. a kind of deep lumen pore process tool according to claim 1, it is characterised in that: the length of the knife bar (2) is 185mm, the long axis a of the knife bar (2) are 18.03mm, and the short axle b of the knife bar (2) is 13mm, and the radius of the circular arc is 9.5mm, the distance of center circle of two sections of circular arcs are 6mm.

4. a kind of deep lumen pore process tool according to claim 1, it is characterised in that: the knife handle (1) is column construction, And the diameter of knife handle (1) is greater than the long axis a of knife bar (2).

5. a kind of deep lumen pore process tool according to claim 4, it is characterised in that: the knife bar (2) and knife handle (1) are inclined Heart setting.

6. a kind of deep lumen pore process tool according to claim 1, it is characterised in that: the knife handle (1) and knife bar (2) are Cemented carbide material is made.