CN109434720B - Machining method of cutting knife - Google Patents

Machining method of cutting knife Download PDF

Info

Publication number
CN109434720B
CN109434720B CN201811601271.7A CN201811601271A CN109434720B CN 109434720 B CN109434720 B CN 109434720B CN 201811601271 A CN201811601271 A CN 201811601271A CN 109434720 B CN109434720 B CN 109434720B
Authority
CN
China
Prior art keywords
workpiece
bolt
positioning
milling
nut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811601271.7A
Other languages
Chinese (zh)
Other versions
CN109434720A (en
Inventor
穆君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Aerospace Kaixing Intelligent Transmission Co ltd
Original Assignee
Guizhou Winstar Hydraulic Transmission Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guizhou Winstar Hydraulic Transmission Machinery Co Ltd filed Critical Guizhou Winstar Hydraulic Transmission Machinery Co Ltd
Priority to CN201811601271.7A priority Critical patent/CN109434720B/en
Publication of CN109434720A publication Critical patent/CN109434720A/en
Application granted granted Critical
Publication of CN109434720B publication Critical patent/CN109434720B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

The invention discloses a method for processing a semi-conical cutter, which comprises the following processing procedures: stock → turning → heat treatment → turning → grinding → turning → milling → clamp → grinding → washing → packaging. In the machining process, a special tool is matched with an R milling cutter tool and a conical surface knife edge grinding core rod to mill and machine an inner circular cavity, an outer circular cavity, an inner cavity sharp edge and an outer cavity sharp edge. The invention can rapidly manufacture the sharp cutting blade, has simple and convenient processing and low manufacturing cost, is suitable for manufacturing and processing the rope-hanging type cutting knife, and has simple and convenient working procedures and reliable processing quality.

Description

Machining method of cutting knife
Technical Field
The invention relates to a machining tool and a machining method for a semi-conical surface cutting tool, and belongs to the technical field of machining.
Background
As shown in fig. 1 and fig. 1a, the cutting tool is a semi-conical surface cutting tool, which is a cutting tool commonly used for cutting hanging ropes, and has smooth transition of inner and outer sharp edges, the knife edge is a semi-conical surface knife edge, the knife edge is quite sharp, the traditional grinding knife edge is not sharp, the phenomenon of edge curling is generated, the knife edge is easily damaged by manual filing of the sharp edge R, the processing efficiency is low, and the processing quality cannot be effectively controlled.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the machining method for the semi-conical surface cutting knife is simple in tool preparation, low in cost, high in machining efficiency and capable of guaranteeing machining quality.
The invention is realized by the following technical scheme:
a tool for machining a cutting knife comprises a bottom plate, a positioning bolt, a first washer, a first nut, a first bolt, a second nut, a second washer, a pressing plate and a cushion block;
the upper end face of the bottom plate is a plane, three screw holes which are in a straight line are formed in the bottom plate and are perpendicular to the upper end face, the first bolt is detachably connected in the screw hole in the middle, and the two second bolts are detachably connected in the screw holes at two ends;
the first bolt is detachably connected with a first washer and a first nut;
the second bolt is detachably connected with a second nut, a second gasket, a pressing plate and a cushion block;
on the up end of bottom plate, and perpendicular to aforementioned three screw place straight line and with the crossing straight line of first bolt place screw axis have two locating holes, two the locating hole is separated in first bolt place screw both sides, can dismantle in the locating hole and be connected with the location bolt.
A machining method of a cutting knife comprises the following steps:
step 1, roughly turning an outer circle for clamping a machined workpiece, roughly drilling an inner hole phi Q1, and roughly turning the thickness L of the machined workpiece into a circular sheet shape;
step 2, heat-treating the workpiece in the step 1 to meet the Rockwell hardness requirement of a cutting tool;
step 3, semi-finish turning the outer circle for clamping, ensuring the outer circle to be vertical to two planes of a workpiece during semi-finish turning, and semi-finish boring an inner hole phi Q1;
step 4, two planes of the thickness dimension L of the workpiece are ground flatly;
step 5, finely boring an inner hole phi Q1, finely turning a knife edge on one side, turning a workpiece, clamping and fixing the excircle of the workpiece, and finely turning a knife edge on the other side;
step 6, placing the workpiece on a bottom plate, fixing the workpiece on the bottom plate through a second bolt, a second nut, a second gasket, a pressure plate and a cushion block, roughly milling and finely milling the inner cavity through an end mill, roughly drilling a locating hole phi Q2 through a drill bit, then milling a locating hole phi Q2 through a milling cutter, and finely milling a sharp edge on one side of the inner cavity through an R milling cutter;
loosening the second bolt, the second nut, the second washer, the pressing plate and the cushion block, and unloading the workpiece;
step 7, turning over the workpiece, positioning through a positioning bolt, fixing the workpiece on the bottom plate through a second bolt, a second nut, a second gasket, a pressing plate and a cushion block again, taking down the positioning bolt, and finely milling a sharp edge of a cavity in the other surface through an R milling cutter;
positioning through a positioning bolt, loosening a second bolt, a second nut, a second gasket, a pressing plate and a cushion block, fixing the workpiece on the bottom plate through the first gasket, the first nut and the first bolt, and taking down the positioning bolt;
roughly milling and finely milling the shape of a workpiece by using an end mill, and finely milling a sharp edge of the shape by using an R milling cutter; the first washer, the first nut and the first bolt are dismounted, and the workpiece is dismounted;
step 8, turning over the workpiece, positioning through a positioning bolt, fixing the workpiece on a bottom plate through a first washer, a first nut and a first bolt, taking down the positioning bolt, and finely milling another sharp edge with an R milling cutter;
step 9, trimming sharp edges to smoothly transit through clamp processing;
and step 10, fixing the grinding core rod on a grinding machine, manually placing a workpiece on the conical surface of the grinding core rod, and driving the grinding core rod through the rotation of a machine tool to enable the workpiece to be in contact with the conical surface so as to remove burrs on a knife edge.
In the step 1, a sheet material is used as a blank for processing a workpiece.
And after the step 10, the steps of cleaning, drying and packaging the workpiece are also included.
According to the invention, through rough machining, heat treatment, semi-finish machining and finish grinding of the workpiece, the workpiece is fixed by using the bottom plate, the positioning bolt, the first washer, the first nut, the first bolt, the second nut, the second washer, the pressing plate and the cushion block in a matching manner, and the purpose of milling sharp edges and grinding sharp knife edges is achieved by using the R milling cutter and grinding the core rod.
The invention processes the cutting tool through a specific tool and a corresponding processing method, the inner and outer shapes of the workpiece are sharp edges, the workpiece also comprises a sharp semi-conical surface edge, and the purposes of milling the sharp edges and grinding the sharp edges are achieved by using an R milling cutter and a grinding core rod. The invention can effectively find the inner cavity and the outer cavity of the cutting knife for processing, milling each sharp edge and grinding the knife edge, and has simple process structure, simple structure of the required process tool and convenient and quick manufacture.
Compared with the existing processing method, the processing method can quickly and effectively find the inner cavity and the outer cavity of the cutting knife to be processed, each sharp edge is milled, the knife edge is ground, the processing quality is reliable, the process structure is simple, the process tool required by the workpiece is simple in structure, the manufacturing is convenient and quick, the manufacturing cost is low, the processing efficiency is further improved, the quality of the certified products is further effectively improved, a large number of defective products and waste products are avoided, and the production cost is reduced.
Drawings
FIG. 1 is a view of a workpiece according to the present invention;
FIG. 1a is a schematic cross-sectional view B-B of the drawing;
FIG. 2 is a schematic structural view of the machining tool after assembly;
FIG. 2a is a schematic cross-sectional view C-C;
FIG. 2b is a schematic cross-sectional view D-D of the drawing;
FIG. 3 is a schematic structural view of an R-mill;
FIG. 3a is a view from direction F of FIG. 3;
FIG. 4 is a schematic view of a grinding mandrel;
in the figure: 1-bottom plate, 2-positioning bolt, 3-first washer, 4-first nut, 5-first bolt, 6-second bolt, 7-second nut, 8-second washer, 9-pressing plate, 10-cushion block, 11-R milling cutter and 12-grinding core rod.
Detailed Description
The invention will be further described with reference to the following drawings and specific examples:
referring to fig. 1 and fig. 1a, for the cutting tool to be processed according to the present invention, α in fig. 1a is the taper of the conical surface, the small end of the conical surface (i.e., the end of Q1 is the knife edge), and the corresponding sharp edges of the inner cavity (including the kidney-shaped hole, the Q1 hole and the conical surface in fig. 1) and the outer cavity (i.e., the outer edge in fig. 1) are R1 and R2, respectively.
As shown in fig. 2, fig. 2a and fig. 2b, the tooling for cutting knife processing comprises a bottom plate 1, a positioning bolt 2, a first washer 3, a first nut 4, a first bolt 5, a second bolt 6, a second nut 7, a second washer 8, a pressure plate 9 and a cushion block 10; the upper end face of the bottom plate 1 is a plane, three screw holes which are in a straight line are formed in the bottom plate 1 and are vertical to the upper end face, the first bolt 5 is detachably connected in the screw hole in the middle, and the two second bolts 6 are detachably connected in the screw holes at the two ends; the first bolt 5 is detachably connected with a first washer 3 and a first nut 4; a second nut 7, a second washer 8, a pressing plate 9 and a cushion block 10 are detachably connected to the second bolt 6; on the up end of bottom plate 1, and perpendicular to aforementioned three screw place straight line and have two locating holes with the crossing straight line of first bolt 5 place screw axis, two the locating hole is separated in first bolt 5 place screw both sides, can dismantle in the locating hole and be connected with location bolt 2.
Fig. 3 and 3a are schematic diagrams of an R-mill 11 used in the present invention, wherein R in the R-mill 11 refers to the sharp edge R parameter of the corresponding machined part.
The specific steps of processing the cutting tool by adopting the tool are as follows:
step 1, preparing materials: preparing materials into sheets through a blanking machine;
step 2, roughly turning an excircle for clamping by a turning machine tool, roughly drilling an inner hole phi Q1 by a drill bit, and roughly turning a thickness L into a circular sheet shape;
step 3, the Rockwell hardness requirement of the cutting tool is met through a heat treatment process;
step 4, machining an inner hole phi Q1 by turning a lathe, semi-finish machining an outer circle for clamping and semi-finish boring, and ensuring that the outer circle is vertical to two planes during semi-finish machining;
step 5, two planes with the L thickness dimension are ground flatly through a grinding machine tool to achieve flatness and uniform thickness;
step 6, finely boring an inner hole phi Q1 through a turning machine tool, finely turning a knife edge on one surface, turning a workpiece, clamping an excircle for fixing by using a soft tripod head, and finely turning a knife edge on the other surface;
step 7, placing a workpiece on the bottom plate 1 through a milling machine tool, fixing the workpiece on the bottom plate 1 through a second bolt 6, a second nut 7, a second gasket 8, a pressing plate 9 and a cushion block 10, roughly milling an inner cavity through an end mill, roughly drilling a positioning hole phi Q2 through a drill, roughly milling a positioning hole phi Q2 through a milling cutter, and finely milling a sharp edge R1 on one surface of the inner cavity through an R milling cutter 11; loosening the second bolt 6, the second nut 7, the second washer 8, the pressure plate 9 and the cushion block 10, and unloading the workpiece;
step 8, turning over the workpiece, positioning through a positioning bolt 2, fixing the workpiece on the bottom plate 1 again through a second bolt 6, a second nut 7, a second gasket 8, a pressing plate 9 and a cushion block 10, taking down the positioning bolt 2, and finely milling a sharp edge R1 of a cavity in the other surface through an R milling cutter 11 and the R milling cutter; positioning through the positioning bolt 2, loosening the second bolt 6, the second nut 7, the second washer 8, the pressure plate 9 and the cushion block 10, fixing the workpiece on the bottom plate 1 through the first washer 3, the first nut 4 and the first bolt 5, and taking down the positioning bolt 2; roughly milling and finely milling the shape of a workpiece by using an end mill, and finely milling a sharp edge R2 of the shape by using an R milling cutter 11 and an R milling cutter; the first washer 3, the first nut 4 and the first bolt 5 are dismounted, and the workpiece is dismounted;
step 9, overturning the workpiece, positioning through the positioning bolt 2, fixing the workpiece on the bottom plate 1 through the first washer 3, the first nut 4 and the first bolt 5, and taking down the positioning bolt 2; finish milling another sharp edge R2 by the R milling cutter 11 and the R milling cutter;
step 10, trimming sharp edges to smoothly transit through clamp processing;
step 11, fixing the grinding core rod 12 shown in fig. 4 on a grinding machine, manually placing a workpiece on the β conical surface of the grinding core rod 12, driving the grinding core rod 12 by the rotation of a machine tool, and enabling the workpiece to be in contact with the β conical surface to remove burrs on a knife edge and ensure the sharpness of the knife edge;
step 12, cleaning and drying the workpiece;
and step 13, packaging the workpiece by using the cotton paper on the first layer and kraft paper on the second layer to protect the workpiece from being damaged.

Claims (3)

1. A processing method of a cutting knife adopts a tool which comprises a bottom plate (1), a positioning bolt (2), a first gasket (3), a first nut (4), a first bolt (5), a second bolt (6), a second nut (7), a second gasket (8), a pressure plate (9) and a cushion block (10);
the upper end face of the bottom plate (1) is a plane, three screw holes which are in a straight line are formed in the bottom plate (1) and are perpendicular to the upper end face, the first bolt (5) is detachably connected in the screw hole in the middle, and the two second bolts (6) are detachably connected in the screw holes at the two ends;
the first bolt (5) is detachably connected with a first washer (3) and a first nut (4);
a second nut (7), a second washer (8), a pressing plate (9) and a cushion block (10) are detachably connected to the second bolt (6);
two positioning holes are formed in the upper end face of the bottom plate (1) and are perpendicular to the straight line where the three screw holes are located and the straight line which is intersected with the screw hole axis where the first bolt (5) is located, the two positioning holes are separated from two sides of the screw hole where the first bolt (5) is located, and a positioning bolt (2) is detachably connected in each positioning hole;
the method is characterized by comprising the following steps:
step 1, roughly turning an outer circle for clamping a machined workpiece, roughly drilling an inner hole (phi Q1), and roughly turning the thickness L of the machined workpiece into a circular sheet shape;
step 2, heat-treating the workpiece in the step 1 to meet the Rockwell hardness requirement of a cutting tool;
step 3, semi-finish turning the outer circle for clamping, ensuring the outer circle to be vertical to two planes of the workpiece during semi-finish turning, and semi-finish boring the inner hole (phi Q1);
step 4, two planes of the thickness dimension L of the workpiece are ground flatly;
step 5, finely boring an inner hole (phi Q1), finely turning a knife edge on one side, turning the workpiece, clamping and fixing the excircle of the workpiece, and finely turning a knife edge on the other side;
step 6, placing a workpiece on a bottom plate (1), fixing the workpiece on the bottom plate (1) through a second bolt (6), a second nut (7), a second gasket (8), a pressing plate (9) and a cushion block (10), roughly milling and finely milling an inner cavity through an end mill, roughly drilling a positioning hole (phi Q2) through a drill bit, milling the positioning hole (phi Q2) through a milling cutter, and finely milling a sharp edge on one surface of the inner cavity through an R milling cutter (11);
loosening the second bolt (6), the second nut (7), the second washer (8), the pressing plate (9) and the cushion block (10), and unloading the workpiece;
step 7, turning over the workpiece, positioning through a positioning bolt (2), fixing the workpiece on the bottom plate (1) again through a second bolt (6), a second nut (7), a second gasket (8), a pressing plate (9) and a cushion block (10), taking down the positioning bolt (2), and finish-milling a sharp edge of a cavity in the other surface through an R milling cutter (11);
positioning through a positioning bolt (2), loosening a second bolt (6), a second nut (7), a second gasket (8), a pressing plate (9) and a cushion block (10), fixing a workpiece on a bottom plate (1) through a first gasket (3), a first nut (4) and a first bolt (5), and taking down the positioning bolt (2);
roughly milling and finely milling the shape of a workpiece by using an end mill, and finely milling a sharp edge of the shape by using an R milling cutter (11); the first washer (3), the first nut (4) and the first bolt (5) are dismounted, and the workpiece is dismounted;
step 8, turning over the workpiece, positioning through a positioning bolt (2), fixing the workpiece on a bottom plate (1) through a first gasket (3), a first nut (4) and a first bolt (5), taking down the positioning bolt (2), and finely milling another sharp edge of the shape through an R milling cutter (11);
step 9, trimming sharp edges to smoothly transit through clamp processing;
and step 10, fixing the grinding core rod (12) on a grinding machine, manually placing a workpiece on the conical surface of the grinding core rod (12), and rotating the grinding core rod (12) through a machine tool to enable the workpiece to be in contact with the conical surface so as to remove burrs on a knife edge.
2. A method of machining a cutting blade as claimed in claim 1, characterized in that: in the step 1, a sheet material is used as a blank for processing a workpiece.
3. A method of machining a cutting blade as claimed in claim 1, characterized in that: and after the step 10, the steps of cleaning, drying and packaging the workpiece are also included.
CN201811601271.7A 2018-12-26 2018-12-26 Machining method of cutting knife Active CN109434720B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811601271.7A CN109434720B (en) 2018-12-26 2018-12-26 Machining method of cutting knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811601271.7A CN109434720B (en) 2018-12-26 2018-12-26 Machining method of cutting knife

Publications (2)

Publication Number Publication Date
CN109434720A CN109434720A (en) 2019-03-08
CN109434720B true CN109434720B (en) 2020-06-23

Family

ID=65537725

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811601271.7A Active CN109434720B (en) 2018-12-26 2018-12-26 Machining method of cutting knife

Country Status (1)

Country Link
CN (1) CN109434720B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111660118A (en) * 2020-06-12 2020-09-15 中航力源液压股份有限公司 Multipurpose milling clamp
CN112643070B (en) * 2020-12-12 2022-08-19 东莞刃峰数控刀具有限公司 Independent fine adjustment type fine boring cutter and machining process thereof
CN114310152B (en) * 2021-10-13 2023-12-05 宁波正元铜合金有限公司 Processing technology and device for plane oil distribution disc of plunger pump
CN114429884B (en) * 2021-12-14 2023-08-25 上海精密计量测试研究所 Unsealing method of rectangular sealed electromagnetic relay

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE531363C2 (en) * 2007-03-30 2009-03-10 Seco Tools Ab Cutting tool with interchangeable cutting support cassette
CN204584328U (en) * 2014-10-22 2015-08-26 北京实验工厂 Adjustable counterbore oppositely draws boring machining device and supporting feeler block thereof
CN104646942A (en) * 2014-12-02 2015-05-27 王树林 MC-type crosshead pin processing method
CN108994352B (en) * 2018-09-03 2024-05-17 贵阳博亚机械制造有限公司 Superfinishing cutter for inner hole of aluminum alloy and processing method

Also Published As

Publication number Publication date
CN109434720A (en) 2019-03-08

Similar Documents

Publication Publication Date Title
CN109434720B (en) Machining method of cutting knife
CN102756252B (en) Method for machining slotted holes on carbon fiber laminated boards
CN200963702Y (en) Composite cutter for processing hole
CN109732279B (en) Processing method of massage chair turbine box
CN103737265B (en) The processing technology of piston abrasion-proof inserted ring
CN112605691A (en) Tightly decide bush fluting processing frock clamp
CN211489673U (en) Arc boring cutter
CN114770044B (en) Method for rapidly machining countersunk holes
CN214186265U (en) Tight bush fluting processing frock clamp
CN213560164U (en) Square hole R3 slotting tool
EP3098042A1 (en) Flat drill bit
CN212042965U (en) Barb groove cutter structure
CN108380943B (en) Drilling and milling integrated milling cutter
CN215698058U (en) Welding tool assembly
CN112589142A (en) Integral eccentric reverse-scribing cutter and method
CN209849964U (en) Cutter for processing pressure port of turnout pad bedplate
CN209775167U (en) Special cutter for machining inner hexagonal counter bore of graphite bolt
CN206215976U (en) A kind of counterbore counterbit
CN110961663A (en) Aperture turning tool for grinding wheel finish machining and machining method thereof
CN115178968B (en) Roller support of glass float line seal box and processing method thereof
CN216758238U (en) Machining tool for automobile supercharged engine shaft by center-walking type numerical control lathe back spindle
CN205183890U (en) Roughing feed volume machine presss from both sides milling cutter
CN211760179U (en) Deep hole drilling device
CN214417749U (en) Non-standard indexable milling cutter
CN213794443U (en) PCD staggered tooth step milling cutter

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: 563000 Gaoping Electromechanical Industrial Park, Huichuan District, Zunyi City, Guizhou Province

Patentee after: Guizhou Aerospace Kaixing Intelligent Transmission Co.,Ltd.

Country or region after: China

Address before: 563003 Guizhou Aerospace hi tech Industrial Park, Dalian Road, Huichuan District, Zunyi City, Guizhou Province (Zunyi Park)

Patentee before: GUIZHOU WINSTAR HYDRAULIC TRANSMISSION MACHINERY Co.,Ltd.

Country or region before: China

CP03 Change of name, title or address