CN113145849B

CN113145849B - Forming method of double-edge planing tool blank

Info

Publication number: CN113145849B
Application number: CN202110476175.XA
Authority: CN
Inventors: 何景福; 刘勇; 石剑
Original assignee: CHONGQING PACIFIC TOOL INDUSTRIAL CO LTD
Current assignee: CHONGQING PACIFIC TOOL INDUSTRIAL CO LTD
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2023-03-21
Anticipated expiration: 2041-04-29
Also published as: CN113145849A

Abstract

The invention belongs to the technical field of production and manufacture of woodworking milling cutters, and discloses a method for forming a double-edge planer tool blank, which comprises the steps of firstly placing hard alloy material powder in a cavity of a die, and then pressing and forming the hard alloy powder by using pressure equipment; the used mold comprises a lower half mold and an upper half mold, wherein a cavity is arranged in the lower half mold, a convex block is arranged at the bottom of the cavity, two side faces of the cavity are obliquely arranged, the longitudinal section of the cavity is trapezoidal, two end faces of the cavity are also obliquely arranged, and the two end faces of the cavity are parallel. The invention solves the problem that the blade processing of the existing double-edge planer tool needs to firstly cut raw materials into strip-shaped blanks and then cut the blanks, so that more waste materials are generated.

Description

Forming method of double-edge planing tool blank

Technical Field

The invention belongs to the technical field of production and manufacturing of woodworking milling cutters, and particularly relates to a forming method of a double-edge planing tool blank.

Background

The woodworking plane edge, especially the hand-held electric plane edge, is widely applied to the manufacture and processing of furniture and woodware, can greatly improve the efficiency of plane processing, reduce the labor intensity of workers, and is widely used. The hand-held electric planer tool is driven by a high-speed motor to rotate a cutter shaft provided with the planer tool at a high speed so as to plane the flat surface of a workpiece. The double-edged planer tool blade is the most commonly used tool for electric woodworking planer tools, and the machining of the double-edged planer tool blade usually comprises the steps of machining raw materials into a strip-shaped blank, and then cutting the blank to form the shape of the required blade. In the process, more waste materials are generated, so that the processing cost is high, and the processing difficulty of cutting the blank is high.

Disclosure of Invention

The invention aims to provide a method for forming a double-edge planer tool blank, which aims to solve the problem that the blade processing of the existing double-edge planer tool needs to firstly cut raw materials into strip-shaped blanks and then cut the blanks, so that more waste materials are generated.

In order to achieve the purpose, the invention provides the following technical scheme that the method for forming the double-edged planer tool blank comprises the steps of firstly placing hard alloy material powder in a cavity of a die, and then pressing and forming the hard alloy powder by using pressure equipment;

the used mold comprises a lower half mold and an upper half mold, wherein a cavity is arranged in the lower half mold, a convex block is arranged at the bottom of the cavity, two side faces of the cavity are obliquely arranged, the longitudinal section of the cavity is trapezoidal, two end faces of the cavity are also obliquely arranged, and the two end faces of the cavity are parallel.

The technical principle of the technical scheme is as follows:

the shape of the die is set, so that the prepared blank is consistent with the shape of the cavity; through the pressing and forming of the hard alloy material powder, the formed blank has high hardness, and the requirements of actual use can be met.

The beneficial effects of the technical scheme are as follows:

1. according to the technical scheme, the hard alloy powder is subjected to compression molding by the pressure equipment, so that the prepared blank is high in density and long in service life;

2. according to the technical scheme, the shape of the cavity of the die is set, so that the shape of the prepared blank is similar to that of a double-edge planer tool, and therefore in the subsequent processing steps, less waste materials are generated by cutting, and waste of raw materials can be reduced;

3. among this technical scheme, use carbide material powder as the raw materials, can make the hardness of the blank of preparation big, conveniently carry out subsequent processing as twolip planer tool blank for the quality of the twolip planer tool blank of preparation is good, long service life.

Furthermore, the lower part and the upper part of the side surface have an angle difference of 2-5 degrees.

Has the advantages that: the angle difference is arranged between the upper part and the lower part of the side surface, so that the strength of the tool tip of the prepared double-edged plane tool is increased, and the service life of the plane tool is prolonged; and the probability of being broken can be reduced by setting a smaller angle difference.

Further, the width of the upper part of the side surface is 0.2 to 0.7mm.

Has the advantages that: the width of the upper part of the side surface is set, so that the original installation and positioning reference of the prepared double-edge planer tool can be protected, and meanwhile, the manufacturing cost cannot be increased.

Furthermore, the inclination angle of the lower part of the side surface is 33-38 degrees.

Has the advantages that: the prepared double-edge plane cutter can better adapt to the machined vertical surface on the side surface, and the planing effect is improved.

Furthermore, the inclination angle of the end face is 3-8 degrees.

Has the advantages that: through setting up the inclination to the terminal surface, can make the terminal surface of the twolip planer tool of preparation can not produce friction and striking with by between the machined facade, and then reduce impaired probability.

Further, the bump is trapezoidal.

Has the advantages that: a trapezoidal mounting groove can be formed on the blank, and the double-edge planing tool is convenient to prepare and is convenient to mount and position.

Drawings

FIG. 1 is a longitudinal sectional view of embodiment 1 of the present invention;

FIG. 2 is a left side view of bitmap 1;

fig. 3 is a schematic structural view of a sealing member in embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the mold comprises an upper mold half 1, a lower mold half 2, a cavity 21, a bump 22, a workbench 3, a placing groove 31, a sliding plate 311, a second conductive block 312, a cavity 32, a baffle 33, a supporting table 34, a flow channel 341, a suction cup 35, a slide block 4, a rotating shaft 5, a gear 51, a moving rod 6, a rack 61, a conical cylinder 7, a sealing ball 8, a fixing plate 9, an electromagnet 91 and a first conductive block 92.

The embodiment is as follows:

in the embodiment, a mold and a pressure device are used during molding, wherein the mold comprises a lower half mold 2 and an upper half mold 1, a cavity 21 is arranged in the lower half mold 2, a convex block 22 is arranged in the middle of the bottom surface of the cavity 21, and the convex block 22 is trapezoidal; the lugs 22 are formed integrally with the lower mold half 2. The longitudinal section of the cavity 21 is inverted trapezoid, so that the left and right side surfaces of the cavity 21 are both inclined from top to bottom and toward the inside, and the lower part and the upper part of the two side surfaces have an angle difference of 2-5 degrees. The angle of the lower parts of the two side surfaces is 33-38 degrees, and the width of the upper parts of the two side surfaces is 0.2-0.7 mm.

The front end surface and the rear end surface of the cavity 21 are also obliquely arranged, the front end surface and the rear end surface of the cavity 21 are arranged in parallel, and the inclination angle of the end surfaces of the cavity 21 is 3-8 degrees.

Pressure equipment includes workstation 3, mounting bracket and vertical sliding connection slider 4 on the mounting bracket, and slider 4 is located directly over workstation 3, and top half 1 is fixed in the bottom surface of slider 4, and top half 1 just right with lower half 2. And a hydraulic machine is fixed on the mounting frame, and a driving rod of the hydraulic machine is fixedly connected with the top of the sliding block 4, so that the sliding block 4 can be driven to drive the upper half mould 1 to move up and down, and further the pressing forming of the double-edge planer tool blank can be realized.

Referring to fig. 2, a rotating shaft 5 is fixed on the upper portion of each of the left and right ends of the lower mold half 2, the two rotating shafts 5 are coaxially arranged, and the two rotating shafts 5 are rotatably connected to the mounting frame. The rotating shafts 5 are coaxially provided with gears 51, and one-way bearings are arranged between the gears 51 and the rotating shafts 5; the rotating shaft 5 is sleeved with a torsion spring, one end of the torsion spring is fixed on the mounting frame, and the other end of the torsion spring is fixed on the rotating shaft 5.

Two moving rods 6 are fixed at the bottom of the sliding block 4, the moving rods 6 are located at the rear side of the rotating shaft 5, racks 61 respectively meshed with the two gears 51 are fixed at the lower parts of the moving rods 6, when the racks 61 move upwards to be meshed with the gears 51, the racks 61 drive the gears 51 to rotate, and then the rotating shaft 5 is driven to rotate, so that the lower half mold 2 is turned over, and the cavity 21 faces downwards. When the slide block 4 drives the moving rod 6 to move downwards, the rack 61 is meshed with the gear 51 and drives the gear 51 to rotate reversely, and at the moment, the rotating shaft 5 does not rotate under the action of the one-way bearing.

The worktable 3 is provided with a placing groove 31 below the moving rod 6 for the moving rod 6 to insert. The baffle 33 is arranged on the front side of the lower half mold 2 on the workbench 3, and the baffle 33 is attached to the front side surface of the lower half mold 2, so that the lower half mold 2 can only rotate backwards under the driving of the gear 51 and the rack 61, and is blocked by the baffle 33 when rotating forwards. The below that lies in half 2 on the workstation 3 is equipped with cavity 32, cavity 32 and the upper and lower both ends that run through workstation 3, and vertical sliding connection has a supporting bench 34 in the cavity 32, also is equipped with the pneumatic cylinder in the workstation 3, and the actuating lever of pneumatic cylinder is fixed with the bottom of supporting bench 34.

A method for forming a double-edged planer tool blank comprises the steps of firstly adjusting a lower half die 2 to the upward direction of a cavity 21, then weighing a proper amount of hard alloy material powder according to the size of the blank, and pouring the hard alloy material powder into the cavity 21 of a die. And starting the two hydraulic machines, driving the support platform 34 to gradually move upwards by the hydraulic machine at the lower part, and enabling the support platform 34 to be abutted against the bottom of the lower half mold 2 to support the lower half mold 2. The hydraulic press on the upper part drives the sliding block 4 and the upper half die 1 to gradually move downwards, and the upper half die 1 is gradually attached to the lower half die 2 to press and form the hard alloy powder, so that a double-edged planer tool blank is formed.

And the process that the slide block 4 moves down can drive the moving rod 6 to move down synchronously, so that the rack 61 is meshed with the gear 51 and drives the gear 51 to rotate, and the rotating shaft 5 cannot rotate because a one-way bearing is arranged between the gear 51 and the rotating shaft 5, so that the lower half die 2 is kept still.

After pressing is completed, the two hydraulic machines are started again, so that the sliding block 4 and the upper half die 1 move upwards, the supporting platform 34 moves downwards, and the lower half die 2 is not limited by external force. When the slide block 4 moves upwards to drive the moving rod 6 to move upwards, the rack 61 gradually moves upwards to be meshed with the gear 51, and then the lower half die 2 is driven to rotate, so that the cavity 21 faces downwards, and then the demoulding of the double-edged planer tool blank is completed.

And the slide block 4 stops moving upwards, and after the blank is demolded, the lower half die 2 reversely rotates under the reset action of the torsion spring, so that the reset of the lower half die 2 is completed, and the next double-edge planer tool blank is conveniently formed.

Example 2:

embodiment 2 differs from embodiment 1 only in that, as shown in fig. 3, the centering block is provided on the rear side of the support base 34 in the present embodiment, and the front side (right side) of the centering block is disposed obliquely rightward from above and below. The upper surface of the supporting table 34 is fixed with a plurality of suckers 35, the number of the suckers 35 is set according to actual requirements, the number of the suckers 35 is 6 in the embodiment, and the suckers are arranged according to 2 × 3 arrays. The middle of the suction cup 35 is provided with a through hole, a flow passage 341 communicated with the through hole is arranged in the support table 34, and a sealing element is arranged in the flow passage 341. The sealing member includes a conical cylinder 7, a sealing ball 8 and a fixing plate 9 which are arranged from top to bottom in sequence, two ends of the conical cylinder 7 are both open, and the large-diameter end of the conical cylinder 7 faces downwards. The diameter of the large diameter end of the tapered cylinder 7 is the same as the inner diameter of the flow passage 341, and the large diameter end of the tapered cylinder 7 is fixed and sealed with the flow passage 341. The diameter of the sealing ball 8 is larger than the inner diameter of the small-diameter end of the conical barrel 7 and smaller than the inner diameter of the large-diameter end of the conical barrel 7. The bottom of the sealing ball 8 is welded with a spring, and the bottom of the spring is welded at the top of the fixing plate 9.

Be equipped with the magnetic layer in the ball sealer 8, the magnetic layer is the iron sheet layer in this embodiment, and the bottom of closing plate is fixed with electro-magnet 91, and the equal electricity in both ends of electro-magnet 91 is connected with the conductor wire, all is fixed with first conducting block 92 on the conductor wire, and first conducting block 92 inlays and establishes on the right side wall of left standing groove 31. Still vertical sliding connection has slide 311 in the left standing groove 31, and the welding has the spring between the bottom of slide 311 and the standing groove 31 bottom, and the pressure spring is all chooseed for use to the spring in this embodiment, and concrete model is selected according to the actual demand.

A power supply is fixed on the sliding plate 311, the two ends of the power supply are both fixed with second conductive blocks 312, the second conductive blocks 312 are arranged on the right side wall of the sliding plate 311, and the two conductive blocks on the sliding plate 311 can be respectively attached to the two first conductive sheets.

In use, the upward movement of the support platform 34 of the lower mold half 2 causes the bottom of the lower mold half 2 to be restrained by the stop and the positioning block, thereby maintaining the lower mold half 2 in a relatively stationary position. And the support table 34 moves up, causing the suction cup 35 to be squeezed, and thus the gas between the suction cup 35 and the support table 34 to be squeezed out. In the process of downward movement of the upper half mold 1, the moving rod 6 moves downward to extrude the sliding plate 311 downward, so that the first conductive block 92 and the second conductive block 312 are separated gradually, the electromagnet 91 is powered off, the sealing ball 8 moves upward under the action of the spring to seal the conical cylinder 7, negative pressure on the sucker 35 is realized, the lower half mold 2 is tightly fixed to the supporting table 34, the press forming process can be avoided, the lower half mold 2 shakes, and the press forming effect is improved.

After pressing is completed, the slide block 4 gradually moves upwards, so that the moving rod 6 gradually moves upwards, the moving rod 6 is separated from the sliding plate 311, the sliding plate 311 is reset under the action of the spring, the first conductive block 92 is contacted with the second conductive block 312, the electromagnet 91 generates a magnetic field to attract the magnetic layer on the sealing ball 8, the sealing ball 8 further moves downwards, and the suction cup 35 is communicated with the outside through the flow passage 341 to further loosen the lower half mold 2. When the moving rod 6 moves up to the rack 61 to engage with the gear 51, the lower mold half 2 rotates to complete the demolding.

It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications should not be construed as affecting the performance of the invention and its practical application.

Claims

1. A forming method of a double-edge planer tool blank is characterized by comprising the following steps: firstly, placing hard alloy material powder in a cavity of a die, and then pressing and molding the hard alloy powder by utilizing pressure equipment;

the used mold comprises a lower half mold and an upper half mold, wherein a cavity is arranged in the lower half mold, a convex block is arranged at the bottom of the cavity, two side surfaces of the cavity are obliquely arranged, so that the longitudinal section of the cavity is trapezoidal, two end surfaces of the cavity are also obliquely arranged, and the two end surfaces of the cavity are parallel; the pressure equipment comprises a workbench, a mounting frame and a slide block vertically connected to the mounting frame in a sliding manner, the slide block is positioned right above the workbench, the upper half die is fixed on the bottom surface of the slide block, and a hydraulic machine capable of driving the slide block to drive the upper half die to move up and down is fixed on the mounting frame; a rotating shaft is fixed on the upper parts of the left end and the right end of the lower half mold, the two rotating shafts are coaxially arranged and are rotatably connected to the mounting frame, gears are coaxially arranged on the two rotating shafts, and one-way bearings are arranged between the gears and the rotating shafts; a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed on the mounting frame, and the other end of the torsion spring is fixed on the rotating shaft; two moving rods are fixed at the bottom of the sliding block, and racks respectively meshed with the two gears are fixed at the lower parts of the two moving rods; the front sides of the upper half mould and the lower half mould of the workbench are provided with a baffle plate; a supporting table is arranged below the lower half die, a hydraulic cylinder is also arranged in the workbench, and a driving rod of the hydraulic cylinder is fixed with the bottom of the supporting table.

2. A method of forming a double-edged planer tool blank as set forth in claim 1, wherein: the upper part and the lower part of the side surface of the cavity are inclined, the inclination angles of the upper part and the lower part of the side surface are different, and the angle difference is 2 to 5 degrees.

3. A method of forming a double-edged planer tool blank as set forth in claim 2, wherein: the width of the upper part of the side face is 0.2 to 0.7mm.

4. A method of forming a double-edged planer tool blank as set forth in claim 3, wherein: the inclination angle of the lower part of the side surface is 33 to 38 degrees.

5. A method of forming a double-edged planer tool blank as set forth in claim 4, wherein: the inclination angle of the end face is 3 to 8 degrees.

6. A method of forming a double-edged planer tool blank as set forth in claim 5, wherein: the projection is trapezoidal.