CN114393219A - Method for machining semicircular cavity of rubber mold core and universal cutter - Google Patents

Method for machining semicircular cavity of rubber mold core and universal cutter Download PDF

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Publication number
CN114393219A
CN114393219A CN202111619699.6A CN202111619699A CN114393219A CN 114393219 A CN114393219 A CN 114393219A CN 202111619699 A CN202111619699 A CN 202111619699A CN 114393219 A CN114393219 A CN 114393219A
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China
Prior art keywords
cutter
rubber mold
head
universal
semicircular cavity
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CN202111619699.6A
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Chinese (zh)
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王文华
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Guiyang Wanjiang Aviation Electromechanical Co ltd
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Guiyang Wanjiang Aviation Electromechanical Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/06—Profile cutting tools, i.e. forming-tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/28—Angles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses a method for processing a semicircular cavity of a rubber mold core, which adopts a designed universal cutter, a cutter setting method according to design regulation and a designed cutter movement track, and then processes qualified mold parts on a numerical control lathe; the universal cutter comprises a cutter head and a cutter handle, wherein the cutter head R2 is smaller than the minimum value of the semicircular cavity R1, and the axis of the effective part of the head of the cutter and the cutter handle form an angle of 45 degrees. The invention does not need to design and process a special cutter for the rubber mold core of each specification, adopts a general cutter, shortens the processing period and reduces the processing cost; the semi-circular cavities on the die parts are processed by the universal cutter in a layered and continuous manner, and the surface roughness of the cavities is good; similarly, the invention can process the semicircular cavity of the rubber mold concave mold core.

Description

Method for machining semicircular cavity of rubber mold core and universal cutter
Technical Field
The invention belongs to the field of mold part machining, and particularly relates to a lathe cutting machining process for removing materials, a machining method of a semicircular cavity of a rubber mold core and a universal cutter.
Background
For the rubber mold core (male and female), as shown in fig. 1 and 2, a semicircular cavity R1 on the conical surface of the core is processed by the conventional processing method, which comprises the following steps: firstly, according to a mould part diagram, a special turning tool with the tool tip radius value equal to the part cavity radius value is designed and processed, and then the qualified semicircular cavity is processed on a common lathe by using the special turning tool. By adopting the traditional processing method, a special cutter needs to be designed and processed for each specification of rubber mold core, the processing period is long, the processing cost is high, and the surface roughness of the cavity of the mold part is poor. In the trial machining of a five-axis linkage turning and milling composite machining center machine tool, an applicant team needs to adopt a numerical control milling cutter with a smaller R, and in order to avoid interference, the R cutter head part needs to extend outwards from the cutter handle for a longer time when clamping a cutter, so that the numerical control milling cutter is easy to give way during machining, the shape and the position of a semicircular cavity on a mold core of a mold part cannot meet the requirements, and the surface roughness is not qualified. The inventor creatively invents a novel rubber mold core processing method through continuous exploration and research, and meets the requirements of actual processing and manufacturing.
Disclosure of Invention
The invention aims to provide a method for processing a semicircular cavity of a rubber mold core and a universal cutter.
The technical scheme of the invention is as follows:
a method for processing a semicircular cavity of a rubber mold core adopts a designed universal cutter, a cutter setting method according to design regulation and a designed cutter movement track, and then qualified mold parts are processed on a numerical control lathe; taking a male die as an example, the specific processing technology comprises the following steps:
A. performing statistical analysis on all the die part drawings, determining the minimum value of a semicircular cavity R1 to be processed, designing a universal cutter, wherein a cutter head R2 is smaller than the minimum value of R1, and the axis of the effective part of the cutter head forms an angle of 45 degrees with the handle part;
B. the motion track of the cutter is calculated according to the geometrical relationship, R3 is R1-R2, and the coordinate value of the point A is
Figure BDA0003437501020000011
The coordinate value of point B is
Figure BDA0003437501020000012
The coordinate value of point C is
Figure BDA0003437501020000013
The coordinate value of the point D is
Figure BDA0003437501020000014
Figure BDA0003437501020000015
C. Clamping a universal cutter in place according to the relative spatial position of a workpiece and the cutter, wherein the axis of the effective part of the head of the cutter is vertical to the surface of a 90-degree conical surface;
D. the machining origin point is well matched according to the point P, namely the center of a circle of R2;
E. under the premise that the part outline and the 90-degree conical surface are machined, according to the determined coordinate values, the tool moves along the path A → B → the circular arc R3 → C → D.
Taking a concave die as an example, the motion track coordinates of the cutter
Figure BDA0003437501020000021
Figure BDA0003437501020000022
And step E, when the machining allowance is too large, R1 is firstly taken as a small value, the machining allowance is reduced by adopting layered cutting, and finally the qualified die part is obtained by the process.
The universal cutter comprises a cutter head and a cutter handle, wherein the cutter head R2 is smaller than the minimum value of the semicircular cavity R1, and the axis of the effective part of the head of the cutter and the cutter handle form an angle of 45 degrees.
The invention has the following characteristics:
1. the invention does not need to design and process a special cutter for the rubber mold core of each specification, adopts a general cutter, shortens the processing period and reduces the processing cost.
2. The invention realizes the layering and continuous processing of the semi-circular cavities on the die parts by the universal cutter, and the surface roughness of the cavities is good.
3. Compared with the traditional processing method, the method has great breakthrough. Similarly, the invention can process the semicircular cavity of the rubber mold concave mold core.
Drawings
FIG. 1 is a rubber mold punch core;
FIG. 2 is a rubber mold female mold core;
FIG. 3 is a schematic view of the universal cutter of the present invention;
figure 4 is a schematic view of the processing of a semicircular cavity of a male mold core of a rubber mold,
fig. 5 is an enlarged view of part M of fig. 4.
FIG. 6 is a schematic view of the processing of a semicircular cavity of a rubber mold female mold core.
Fig. 7 is an enlarged view of part M of fig. 6.
The labels in the figure are: the cutter head axis 1, the cutter path 2, the radius of a semicircular cavity of R1, the radius of a cutter head of R2, R3 is equal to R1-R2, the cutter point P (machining origin), the cutter motion track A, B, C, D,
Figure BDA0003437501020000023
Figure BDA0003437501020000024
Figure BDA0003437501020000025
Figure BDA0003437501020000026
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.
Referring to fig. 3-7, a method for processing a semicircular cavity of a rubber mold core, which adopts a designed universal cutter, a tool setting method according to design rules and a designed cutter movement track, and then processes qualified mold parts on a numerical control lathe; taking a male die as an example, the specific processing technology comprises the following steps:
A. performing statistical analysis on all the die part drawings, determining the minimum value of a semicircular cavity R1 to be processed, designing a universal cutter, wherein a cutter head R2 is smaller than the minimum value of R1, and the axis of the effective part of the cutter head forms an angle of 45 degrees with the handle part;
B. the motion track of the cutter is calculated according to the geometrical relationship, R3 is R1-R2, and the coordinate value of the point A is
Figure BDA0003437501020000031
The coordinate value of point B is
Figure BDA0003437501020000032
The coordinate value of point C is
Figure BDA0003437501020000033
The coordinate value of the point D is
Figure BDA0003437501020000034
Figure BDA0003437501020000035
C. Clamping a universal cutter in place according to the relative spatial position of a workpiece and the cutter, wherein the axis of the effective part of the head of the cutter is vertical to the surface of a 90-degree conical surface;
D. the machining origin point is well matched according to the point P, namely the center of a circle of R2; the tool setting point of the R tool of the lathe in the prior art is usually on the arc surface of the head of the tool, and is different from the tool setting method adopted by the invention;
E. under the premise that the part outline and the 90-degree conical surface are machined, according to the determined coordinate values, the tool moves along the path A → B → the circular arc R3 → C → D.
Taking a concave die as an example, the motion track coordinates of the cutter
Figure BDA0003437501020000036
Figure BDA0003437501020000037
And step E, when the machining allowance is too large, R1 is firstly taken as a small value, the machining allowance is reduced by adopting layered cutting, and finally the qualified die part is obtained by the process.
The universal cutter comprises a cutter head and a cutter handle, wherein the cutter head R2 is smaller than the minimum value of the semicircular cavity R1, and the axis of the effective part of the head of the cutter and the cutter handle form an angle of 45 degrees.
The invention does not need to design and process a special cutter for the rubber mold core of each specification, adopts a general cutter, shortens the processing period and reduces the processing cost; the semi-circular cavities on the die parts are processed by the universal cutter in a layered and continuous manner, and the surface roughness of the cavities is good; similarly, the invention can process the semicircular cavity of the rubber mold concave mold core.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (4)

1. A semicircular cavity processing method of a rubber mold core adopts a designed universal cutter, a cutter setting method according to design regulation and a designed cutter movement track, and then qualified mold parts are processed on a numerical control lathe, and is characterized in that: taking a male die as an example, the specific processing technology comprises the following steps:
A. performing statistical analysis on all the die part drawings, determining the minimum value of a semicircular cavity R1 to be processed, designing a universal cutter, wherein a cutter head R2 is smaller than the minimum value of R1, and the axis of the effective part of the cutter head forms an angle of 45 degrees with the handle part;
B. the motion track of the cutter is calculated according to the geometrical relationship, R3 is R1-R2, and the coordinate value of the point A is
Figure FDA0003437501010000011
The coordinate value of point B is
Figure FDA0003437501010000012
The coordinate value of point C is
Figure FDA0003437501010000013
The coordinate value of the point D is
Figure FDA0003437501010000014
Figure FDA0003437501010000015
C. Clamping a universal cutter in place according to the relative spatial position of a workpiece and the cutter, wherein the axis of the effective part of the head of the cutter is vertical to the surface of a 90-degree conical surface;
D. the machining origin point is well matched according to the point P, namely the center of a circle of R2;
E. under the premise that the part outline and the 90-degree conical surface are machined, according to the determined coordinate values, the tool moves along the path A → B → the circular arc R3 → C → D.
2. The method for processing the semicircular cavities of the rubber mold cores as claimed in claim 1, wherein the method comprises the following steps: and step E, when the machining allowance is too large, R1 is firstly taken as a small value, the machining allowance is reduced by adopting layered cutting, and finally the qualified die part is obtained by the process.
3. The method for processing the semicircular cavities of the rubber mold cores as claimed in claim 1, wherein the method comprises the following steps: taking a concave die as an example, the motion track coordinate A1 of the cutter
Figure FDA0003437501010000016
B1
Figure FDA0003437501010000017
C1
Figure FDA0003437501010000018
D1
Figure FDA0003437501010000019
4. A universal tool for use in a method of machining a semicircular cavity of a rubber mold core as defined in any one of claims 1 to 3, wherein: the cutter comprises a cutter head and a cutter handle, wherein the cutter head R2 is smaller than the minimum value of the semicircular cavity R1, and the axis of the effective part of the head of the cutter is at 45 degrees with the cutter handle.
CN202111619699.6A 2021-12-27 2021-12-27 Method for machining semicircular cavity of rubber mold core and universal cutter Pending CN114393219A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705447A (en) * 1970-10-22 1972-12-12 Thomas J Kollar Machine tool bit
WO1988003073A1 (en) * 1986-10-21 1988-05-05 Fanuc Ltd Method of preparing nc programs for pocket machining
JP2000047721A (en) * 1998-07-28 2000-02-18 Nissan Motor Co Ltd Tool path generating method for detailed shape nc machining
US20030125829A1 (en) * 2001-12-04 2003-07-03 Yoshiaki Kakino NC program generating method, NC program generating apparatus, computer memory product, and computer program product
JP2005305590A (en) * 2004-04-21 2005-11-04 Olympus Corp Method and apparatus for machining curved surface
CN103176428A (en) * 2013-04-16 2013-06-26 易兴 CNC (computerized numerical control) system interpolating algorithm based on spherical coordinates and device for realizing same
CN104338937A (en) * 2014-10-09 2015-02-11 陕西启源科技发展有限责任公司 Method for turning and processing male die of large-scale O-shaped ring mold with die sinking of 45 degrees
CN207746425U (en) * 2017-10-31 2018-08-21 二重（德阳）重型装备有限公司 Process the dedicated tool of larger diameter internal bore root Inner arc
CN112692313A (en) * 2020-12-28 2021-04-23 大连长丰实业总公司 Numerical control turning tool for machining inner annular groove of O-shaped rubber ring die with die parting surface of 45 degrees

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705447A (en) * 1970-10-22 1972-12-12 Thomas J Kollar Machine tool bit
WO1988003073A1 (en) * 1986-10-21 1988-05-05 Fanuc Ltd Method of preparing nc programs for pocket machining
JP2000047721A (en) * 1998-07-28 2000-02-18 Nissan Motor Co Ltd Tool path generating method for detailed shape nc machining
US20030125829A1 (en) * 2001-12-04 2003-07-03 Yoshiaki Kakino NC program generating method, NC program generating apparatus, computer memory product, and computer program product
JP2005305590A (en) * 2004-04-21 2005-11-04 Olympus Corp Method and apparatus for machining curved surface
CN103176428A (en) * 2013-04-16 2013-06-26 易兴 CNC (computerized numerical control) system interpolating algorithm based on spherical coordinates and device for realizing same
CN104338937A (en) * 2014-10-09 2015-02-11 陕西启源科技发展有限责任公司 Method for turning and processing male die of large-scale O-shaped ring mold with die sinking of 45 degrees
CN207746425U (en) * 2017-10-31 2018-08-21 二重（德阳）重型装备有限公司 Process the dedicated tool of larger diameter internal bore root Inner arc
CN112692313A (en) * 2020-12-28 2021-04-23 大连长丰实业总公司 Numerical control turning tool for machining inner annular groove of O-shaped rubber ring die with die parting surface of 45 degrees

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李红梅，刘红华: "技术工人上岗必读 模具工", 辽宁科学技术出版社, pages: 260 - 265 *

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