CN110548927A - Deburring cutter for intersecting contour lines of vertical cross holes - Google Patents

Abstract

The invention discloses a deburring tool with vertical intersecting holes intersecting contour lines, which comprises a cylindrical cutter head and a cutter bar. The cutter head is integrally provided with three blades, and each blade is arranged at equal intervals in fan blades around the rotation axis of the cutter head. , each flute integrally forms a cutting angle α and a notch angle β on corresponding two adjacent cutting edges, and the cutting angle α is perpendicular to the axial direction of the cutter head and extends obliquely outward. The present invention has a simple and practical structure, high working efficiency, and adds a rotating spherical knife for pre-deburring, so that the size, position and shape of the burrs at the intersecting lines of the parts are stable, laying a good foundation for the subsequent ECM, and the test proves that the pre-deburring The glitch effect is better.

Description

A Deburring Tool for Intersecting Contour Lines Vertically Intersecting Holes

technical field

The invention relates to a deburring tool for auto parts, in particular to a deburring tool vertically intersecting contour lines of intersecting holes.

Background technique

The shape of a mechanical part is often formed by combining two or more basic solids in different ways. The intersection of two solids when combined is called two solids intersecting, and the intersection line formed on their surfaces is called intersecting line; deburring is to remove The harmfulness of burrs is particularly obvious in the thorns or flashes formed at the intersection of parts and surfaces, and is gradually attracting people's attention.

In the high-pressure fuel rail fittings of automobiles, there are usually two sets of intersecting contour lines formed by non-orthogonal holes with different diameters. After machining, burrs will remain. The burrs there are random, large and small, and the position Not fixed, causing difficulties for subsequent ECM deburring.

To sum up, there is a need for a special tool with simple and practical structure, high work efficiency and good pre-deburring effect.

Contents of the invention

The technical problem to be solved by the invention is the lack of professional pre-deburring tools in the existing automotive high-pressure oil rail fittings.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is to provide a deburring tool vertically intersecting the contour line of the intersecting holes, including a cylindrical cutter head and a cutter bar, and there is a diameter from the cutter bar to the cutter head The gradually smaller tapered slope surface, the cutter head and the cutter bar are integrally connected through the tapered slope surface, and the cutter head is integrally provided with three blades, and each of the blades surrounds the rotation axis of the cutter head in a The fan blades are arranged at equal intervals, and there are edge grooves between the adjacent blades, the edge grooves are recessed in the outer peripheral surface of the cutter head, and the edge grooves are arranged obliquely to the axial direction of the cutter head, Each of the flutes integrally forms a cutting angle α and a notch angle β on corresponding two adjacent cutting edges, the cutting angle α is perpendicular to the axial direction of the cutter head and extends obliquely outwards, And each of the cutting angle α and the notch angle β is respectively provided with an inwardly recessed chamfering groove on the outer peripheral surface.

In the above solution, a circulating water channel is opened along the interior of the cutter head and the cutter bar, and the circulating water channel penetrates along the axial direction of the cutter head and the cutter bar.

In the above solution, a screw hole is provided on the outer peripheral surface perpendicular to the knife rod, the screw hole is vertically connected with the circulating water channel, and an external threaded rod is screwed inside the screw hole.

In the above solution, an internal threaded sleeve is also matched between the contact surface of the external threaded rod and the screw hole, and a through hole communicating with the circulating water channel is opened on the internal threaded sleeve. The material of the internal thread sleeve is waterproof material.

In the above solution, a nut is fixedly sleeved on the externally threaded rod, and the diameter of the nut is larger than the diameter of the screw hole.

In the above solution, the diameter of the externally threaded rod is larger than the diameter of the circulating water channel.

In the above solution, the lengths of the screw hole and the externally threaded rod are both greater than the sum of the radius of the knife rod and the radius of the circulating water channel.

In the above solution, along a plane perpendicular to the axial direction of the knife rod, the cutting angle α is an acute angle, the notch angle β is 90°, and the opening of the edge groove is 92.75°; In the plane of the shaft axis, the cutting angle α is 45°.

In the above solution, along a plane perpendicular to the axial direction of the cutter rod, the cutting angle α and the notch angle β are respectively inscribed on the top surface circle of the cutter rod.

The present invention has a simple and practical structure, high working efficiency, and adds a rotating spherical knife for pre-deburring, so that the size, position and shape of the burrs at the intersecting lines of the parts are stable, laying a good foundation for the subsequent ECM, and the test proves that the pre-deburring The glitch effect is better.

Description of drawings

Fig. 1 is the outline schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the present invention;

Fig. 3 is the top view of the present invention;

Figure 4 is a side view of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

The invention discloses a deburring tool vertically intersecting the contour line of the intersecting hole. Those skilled in the art can refer to the content of this article and appropriately improve the process parameters to realize it. It needs to be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention, and relevant personnel can obviously make changes without departing from the content, spirit and scope of the present invention. Changes or appropriate changes and combinations are made to the content described herein to realize and apply the technology of the present invention.

In the invention, unless otherwise stated, the scientific and technical terms used herein have the meanings commonly understood by those skilled in the art.

As shown in Figures 1 to 4, a deburring tool vertically intersecting the contour line of the intersecting holes provided by the present invention includes a cylindrical cutter head 1 and a cutter bar 2, and a diameter gradually changes from the cutter bar 2 to the cutter head 1. The small tapered slope 3, the cutter head 1 and the cutter bar 2 are integrally connected through the tapered slope 3, and the cutter head 1 is provided with three blades 4, and each blade 4 surrounds the rotation axis of the cutter head 1 in a fan-like shape, etc. Arranged at intervals, there are edge grooves 5 between adjacent blades 4, the edge grooves 5 are recessed on the outer peripheral surface of the cutter head 1, and the edge grooves 5 are arranged obliquely to the axial direction of the cutter head 1. When in use, the cutter is assembled on the machine Rotate upward, and each blade 4 rotates in a spherical shape to deburr the high-pressure oil rail fittings of the automobile.

Each flute 5 integrally forms a cutting angle α and a notch angle β on the corresponding two adjacent cutting edges 4 respectively. The cutting angle α is perpendicular to the axial direction of the cutter head 1 and extends obliquely outwards, along the direction perpendicular to the cutter bar. 2 The axial plane, the cutting angle α and the notch angle β are respectively inscribed on the top circle of the cutter bar 2. This structure makes the blade 4 have two protruding corners, and the notch angle β provides good strength and avoids damage , The cutting angle α provides better cutting ability and greatly improves the cutting speed.

The outer peripheral surface of each cutting angle α and notch angle β is respectively provided with an inwardly recessed chamfering groove 6, which is beneficial to make the blade easily touch the dead angle of the intersecting line and other difficult-to-reach positions for deburring operations, greatly improving The scope of application and the effect of removing thorns.

It has been verified by experiments that along the plane perpendicular to the axial direction of the cutter bar 2, the cutting angle α is an acute angle, the notch angle β is 90°, and the opening of the edge groove 5 is 92.75°; along the plane parallel to the axial direction of the cutter bar 2, the cutting angle α is 45°. At this time, the effect of cutting and deburring is the best, the speed is the fastest, and the surface smoothness of the high-pressure fuel rail fittings is the best.

Further preferably, a circulating water channel 7 is provided along the inside of the cutter head 1 and the cutter bar 2, and the circulating water channel 7 runs through the axial direction of the cutter head 1 and the cutter bar 2. When the cutter cuts, injecting circulating water in the circulating water channel 7 can significantly Cool down, so that the tool can work continuously for a long time, greatly improving work efficiency.

The outer peripheral surface of the vertical cutter bar 2 is provided with a screw hole 8, the screw hole 8 is vertically communicated with the circulating water channel 7, and an external threaded rod 9 is installed in the screw hole 8, so that the external threaded rod 9 is screwed to make the external threaded rod The end of 9 lifts in screw hole 8, and adjustable external threaded rod 9 blocks the water intake area of circulating water channel 7, thereby can regulate the speed of water flow in circulating water channel 7 according to actual needs.

An internal thread sleeve 10 is also matched between the contact surface of the external thread rod 9 and the screw hole 8, and a through hole 11 communicating with the circulating water channel 7 is provided on the internal thread sleeve 10, and the material of the internal thread sleeve 10 is waterproof material , so that effective sealing protection can be performed between the contact surface of the externally threaded rod 9 and the screw hole 8 to prevent water from flowing out from the screw hole 8 .

The fixed sleeve on the externally threaded rod 9 is provided with a nut 12, and the diameter of the nut 12 is greater than the diameter of the screw hole 8, which is more convenient for workers to manually adjust the externally threaded rod 9. The diameter of the externally threaded rod 9 is greater than the diameter of the circulating waterway 7, and the length of the screw hole 8 and the externally threaded rod 9 is greater than the sum of the radius of the cutter bar 2 and the radius of the circulating waterway 7, so that the externally threaded rod 9 can completely circulate The water channel 7 is cut off, thereby satisfying the demand of actual use.

The present invention has a simple and practical structure, high working efficiency, and adds a rotating spherical knife for pre-deburring, so that the size, position and shape of the burrs at the intersecting lines of the parts are stable, laying a good foundation for the subsequent ECM, and the test proves that the pre-deburring The glitch effect is better.

The present invention is not limited to the above-mentioned best implementation mode, and anyone should know that any structural changes made under the inspiration of the present invention, and any technical solutions that are identical or similar to the present invention, all fall within the protection scope of the present invention .

Claims (9)

1. A deburring tool for vertical intersecting contour lines, characterized in that it comprises a cylindrical cutter head and a cutter bar, and has a tapered slope surface with a gradually decreasing diameter from the cutter bar to the cutter head, The cutter head and the cutter bar are integrally connected by the tapered slope surface, and the cutter head is integrally provided with three blades, each of which is arranged at equal intervals around the rotation axis of the cutter head in a fan blade shape, adjacent to each other. There are grooves between the blades, the grooves are recessed in the outer peripheral surface of the cutter head, the grooves are arranged obliquely to the axial direction of the cutter head, and each groove is in the corresponding A cutting angle α and a notch angle β are respectively integrally formed on two adjacent blades, the cutting angle α is perpendicular to the axial direction of the cutter head and extends obliquely outward, and each of the cutting angle α and Inwardly recessed chamfering grooves are respectively provided on the outer peripheral surface of the notch angle β. 2. The deburring cutter with vertical intersecting holes intersecting the contour line according to claim 1, characterized in that, a circulating water channel is provided along the inside of the cutter head and the cutter bar, and the circulating water channel runs along the edge of the cutter head and the cutter bar axial penetration. 3. The deburring cutter of vertical intersecting holes intersecting contour lines as claimed in claim 2, characterized in that, a screw hole is provided on the outer peripheral surface perpendicular to the knife rod, and the screw hole is vertically communicated with the circulating water channel, so that An externally threaded rod is installed in the screw hole. 4. The deburring tool for intersecting contour lines with vertical intersecting holes as claimed in claim 3, characterized in that, an internal thread sleeve is also matched and sleeved between the contact surface of the externally threaded rod and the screw hole, and the A through hole communicating with the circulating water channel is opened on the inner threaded sleeve, and the material of the inner threaded sleeve is waterproof material. 5 . The deburring tool for intersecting contours with vertical intersecting holes as claimed in claim 4 , wherein a nut is fixedly sleeved on the externally threaded rod, and the diameter of the nut is larger than the diameter of the screw hole. 6 . 6 . The deburring tool with vertical intersecting holes intersecting contour lines according to claim 3 , wherein the diameter of the externally threaded rod is larger than the diameter of the circulating water channel. 7 . 7. The deburring cutter with vertical intersecting holes intersecting contour lines according to claim 3, wherein the lengths of the screw holes and the externally threaded rods are greater than the radius of the cutter rod and the radius of the circulating water channel Sum. 8. The deburring tool of vertical intersection hole intersecting contour lines according to claim 1, characterized in that, along a plane perpendicular to the axial direction of the cutter bar, the cutting angle α is an acute angle, and the notch angle β is 90° °, the opening of the flute is 92.75°; along a plane parallel to the axial direction of the cutter bar, the cutting angle α is 45°. 9. The deburring tool of vertical intersection hole intersecting contour line as claimed in claim 1, characterized in that, along a plane perpendicular to the axial direction of the cutter bar, the cutting angle α and the notch angle β are respectively inscribed in the The top surface of the shank is round.