阅读说明：本技术 一种针对带槽型立装铣刀片的制造方法 (Manufacturing method for grooved vertical milling blade ) 是由 赵涛 吴宗明 唐华 冯星铭 梁有恒 于 2021-08-31 设计创作，主要内容包括：本发明公开了一种针对带槽型立装铣刀片的制造方法,属于机加工技术领域,目的在于解决现有工艺加工立装铣刀片存在刀片孔型不标准、加工难度大、产品合格率低的问题。其通过把刀片的槽型设计在模具的两侧,利用双向压机的行程控制结合斜块和复位弹簧来实现槽型的进入和退出。这样就可以在普通的双向压机上实现槽型和孔型的一次成型,极大的降低了制造成本。该技术既避免了芯杆对粉料的填充影响,同时由于成型槽部分增加了附加的短程移动,有利于提高刃口部分的密度,压制出来的毛坯变形小,刃口质量高。本发明适用于针对带槽型立装铣刀片的制造方法。(The invention discloses a manufacturing method for a grooved vertical milling blade, belongs to the technical field of machining, and aims to solve the problems of nonstandard blade hole pattern, high machining difficulty and low product percent of pass in the process of machining the vertical milling blade in the prior art. The groove type of the blade is designed on two sides of the die, and the groove type is entered and exited by utilizing the stroke control of the bidirectional press and combining the inclined block and the return spring. Therefore, the groove-shaped and hole-shaped one-step forming can be realized on a common two-way press, and the manufacturing cost is greatly reduced. The technology avoids the filling influence of the core rod on the powder, and simultaneously, because the molding groove part is additionally provided with additional short-range movement, the technology is favorable for improving the density of the cutting edge part, the pressed blank has small deformation and the cutting edge has high quality. The invention is suitable for the manufacturing method of the vertically-mounted milling blade aiming at the belt groove type.)

1. A method of manufacturing a grooved vertically mounted milling insert, comprising the steps of:

(1) the groove shape of the blade is designed on two sides of the die, the die comprises an upper die frame, two ends of the lower side of the upper die frame are provided with oblique blocks, the middle part of the lower side of the upper die frame is provided with an upper punch positioning ring and an upper punch, the upper punch is fixed in the upper punch positioning ring through an upper punch locking nut and is also provided with a lower punch, a lower core barrel is sleeved in the lower punch, a lower core rod is sleeved in the lower core barrel, a female die is sleeved at the upper end of the lower punch, the female die is provided with a guide hole along the horizontal direction, a movable side core is sleeved in the guide hole, two ends of the movable side core, which are positioned at the outer side of the female die, are provided with side core connecting plates through side core fixing screws, a limit screw is connected between the side core connecting plate and the female die, a return spring is sleeved on the limit screw, the end parts of the two sides of the movable side core are abutted against the inclined block, and the groove shape of the blade is positioned at the end parts of the two sides of the movable side core;

(2) the upper die frame drives the upper punch and the inclined block to move upwards, the movable side core moves outwards under the action of the return spring, and the lower punch moves downwards to perform filling;

(3) the upper punch and the lower punch move oppositely to press, the blade mounting hole is pressed and formed, meanwhile, the inclined block drives the movable side core to move inwards along the guide hole, and the blade side grooves at two ends of the movable side core are pressed and formed;

(4) the upper punch moves upwards, the inclined block leaves, the movable side core moves outwards to reset, the female die moves downwards, and the lower punch pushes out a blade blank formed by pressing;

(5) the manipulator takes away the blade blank and resets the die;

(6) sintering and hardening the blade blank at a high temperature;

(7) and (4) taking the side groove pressed by the blade blank as a reference, and finely grinding on an automatic peripheral grinding machine to obtain a finished blade.

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a manufacturing method for a grooved vertical milling blade.

Background

With the development of machining, the requirements on cutting tools are higher and higher, and the vertically-installed blade with the groove has good installation rigidity and stable cutting, and is the direction of modern machining development.

The vertically installed blade with the groove has the characteristics that the blade mounting hole and the cutting edge are not on the same plane, and the one-step forming can not be realized on a common two-way press. The current common practice is as follows:

1. the one-step press forming of the blank is realized by using a high-precision die with a lateral core pulling function on the electric press with the lateral pressure function. The method has the defects that the requirements on a press and a die are high, and the hole pattern of the blank after sintering shrinkage is not standard because the lateral core rod influences the filling of powder.

2. The groove shape and the outer contour are firstly pressed on a common two-way press, and then the hole shape is manufactured by a machining method.

The method has the defects of high difficulty in subsequent hole type processing and low product percent of pass.

Disclosure of Invention

The invention aims to: the manufacturing method for the grooved vertical milling blade solves the problems of nonstandard blade hole pattern, high processing difficulty and low product percent of pass of the vertical milling blade processed by the prior art.

The technical scheme adopted by the invention is as follows:

a method of manufacturing a grooved vertically mounted milling insert comprising the steps of:

(1) the groove shape of the blade is designed on two sides of the die, the die comprises an upper die frame, two ends of the lower side of the upper die frame are provided with oblique blocks, the middle part of the lower side of the upper die frame is provided with an upper punch positioning ring and an upper punch, the upper punch is fixed in the upper punch positioning ring through an upper punch locking nut and is also provided with a lower punch, a lower core barrel is sleeved in the lower punch, a lower core rod is sleeved in the lower core barrel, a female die is sleeved at the upper end of the lower punch, the female die is provided with a guide hole along the horizontal direction, a movable side core is sleeved in the guide hole, two ends of the movable side core, which are positioned at the outer side of the female die, are provided with side core connecting plates through side core fixing screws, a limit screw is connected between the side core connecting plate and the female die, a return spring is sleeved on the limit screw, the end parts of the two sides of the movable side core are abutted against the inclined block, and the groove shape of the blade is positioned at the end parts of the two sides of the movable side core;

(2) the upper die frame drives the upper punch and the inclined block to move upwards, the movable side core moves outwards under the action of the return spring, and the lower punch moves downwards to perform filling;

(3) the upper punch and the lower punch move oppositely to press, the blade mounting hole is pressed and formed, meanwhile, the inclined block drives the movable side core to move inwards along the guide hole, and the blade side grooves at two ends of the movable side core are pressed and formed;

(4) the upper punch moves upwards, the inclined block leaves, the movable side core moves outwards to reset, the female die moves downwards, and the lower punch pushes out a blade blank formed by pressing;

(5) the manipulator takes away the blade blank and resets the die;

(6) sintering and hardening the blade blank at a high temperature;

(7) and (4) taking the side groove pressed by the blade blank as a reference, and finely grinding on an automatic peripheral grinding machine to obtain a finished blade.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. in the invention, the groove type of the blade is designed on two sides of the die, and the groove type is entered and exited by utilizing the stroke control of the bidirectional press and combining the inclined block and the return spring. Thus, the one-step molding of groove shape and hole shape can be realized on a common two-way press. The technology avoids the filling influence of the core rod on the powder, and simultaneously, the molding groove part is additionally provided with additional short-distance movement, thereby being beneficial to improving the density of the cutting edge part. The pressed blank has small deformation and high cutting edge quality. The one-step molding of the vertically-installed blade with the groove is realized on a common press, and the manufacturing cost is greatly reduced. Simultaneously, the blades with high requirements on the quality of the cutting edge need to finish the blank, so that the clearance of the die is allowed to be slightly larger, and the difficulty in manufacturing the die is reduced. The circular arc of the corner can be realized through subsequent fine grinding, so that the shape of the punch can be simplified, the pressing difficulty is reduced, and the service life of the die is prolonged. Through subsequent accurate grinding processing, the size precision and the cutting edge quality of the product are greatly improved. Because the accurate grinding is processed by taking the side groove as the reference, the consistency of the cutting edge can be ensured, and the problems of nonstandard blade hole pattern, high processing difficulty and low product percent of pass existing in the process of processing the vertical milling blade in the prior art are effectively solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:

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

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a cross-sectional view of the invention E-E;

FIG. 4 is a cross-sectional view F-F of the present invention;

FIG. 5 is a perspective view of the present invention;

FIG. 6 is a schematic view of a blade blank of the present invention;

FIG. 7 is a schematic view of a finished blade of the present invention;

FIG. 8 is a schematic view of the construction of the active side core of the present invention;

FIG. 9 is a schematic structural view of a female mold of the present invention;

reference numerals: 1-upper die frame, 2-upper punch positioning ring, 3-upper punch locking nut, 4-oblique block, 5-side core fixing screw, 6-upper punch, 7-female die, 8-movable side core, 9-lower punch, 10-lower core barrel, 11-lower core rod, 12-limit screw, 13-reset spring, 14-side core connecting plate, 15-guide hole and 16-blade mounting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

A method of manufacturing a grooved vertically mounted milling insert comprising the steps of:

(1) the groove shape of the blade is designed on two sides of the die, the die comprises an upper die frame, two ends of the lower side of the upper die frame are provided with oblique blocks, the middle part of the lower side of the upper die frame is provided with an upper punch positioning ring and an upper punch, the upper punch is fixed in the upper punch positioning ring through an upper punch locking nut and is also provided with a lower punch, a lower core barrel is sleeved in the lower punch, a lower core rod is sleeved in the lower core barrel, a female die is sleeved at the upper end of the lower punch, the female die is provided with a guide hole along the horizontal direction, a movable side core is sleeved in the guide hole, two ends of the movable side core, which are positioned at the outer side of the female die, are provided with side core connecting plates through side core fixing screws, a limit screw is connected between the side core connecting plate and the female die, a return spring is sleeved on the limit screw, the end parts of the two sides of the movable side core are abutted against the inclined block, and the groove shape of the blade is positioned at the end parts of the two sides of the movable side core;

(2) the upper die frame drives the upper punch and the inclined block to move upwards, the movable side core moves outwards under the action of the return spring, and the lower punch moves downwards to perform filling;

(3) the upper punch and the lower punch move oppositely to press, the blade mounting hole is pressed and formed, meanwhile, the inclined block drives the movable side core to move inwards along the guide hole, and the blade side grooves at two ends of the movable side core are pressed and formed;

(4) the upper punch moves upwards, the inclined block leaves, the movable side core moves outwards to reset, the female die moves downwards, and the lower punch pushes out a blade blank formed by pressing;

(5) the manipulator takes away the blade blank and resets the die;

(6) sintering and hardening the blade blank at a high temperature;

(7) and (4) taking the side groove pressed by the blade blank as a reference, and finely grinding on an automatic peripheral grinding machine to obtain a finished blade.

In the implementation process of the invention, the groove shapes of the blades are designed on two sides of the die, and the groove shapes are entered and exited by utilizing the stroke control of the bidirectional press and combining the inclined block and the return spring. Thus, the one-step molding of groove shape and hole shape can be realized on a common two-way press. The technology avoids the filling influence of the core rod on the powder, and simultaneously, the molding groove part is additionally provided with additional short-distance movement, thereby being beneficial to improving the density of the cutting edge part. The pressed blank has small deformation and high cutting edge quality. The one-step molding of the vertically-installed blade with the groove is realized on a common press, and the manufacturing cost is greatly reduced. Simultaneously, the blades with high requirements on the quality of the cutting edge need to finish the blank, so that the clearance of the die is allowed to be slightly larger, and the difficulty in manufacturing the die is reduced. The circular arc of the corner can be realized through subsequent fine grinding, so that the shape of the punch can be simplified, the pressing difficulty is reduced, and the service life of the die is prolonged. Through subsequent accurate grinding processing, the size precision and the cutting edge quality of the product are greatly improved. Because the accurate grinding is processed by taking the side groove as the reference, the consistency of the cutting edge can be ensured, and the problems of nonstandard blade hole pattern, high processing difficulty and low product percent of pass existing in the process of processing the vertical milling blade in the prior art are effectively solved.

The above description is an embodiment of the present invention. The foregoing is a preferred embodiment of the present invention, and the preferred embodiments in the preferred embodiments can be combined and used in any combination if not obviously contradictory or prerequisite to a certain preferred embodiment, and the specific parameters in the embodiments and examples are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the patent protection scope of the present invention, which is subject to the claims and all the equivalent structural changes made by the content of the description and the drawings of the present invention are also included in the protection scope of the present invention.