CN223171939U - Hole chamfering C-shaped cutter - Google Patents

Abstract

The utility model relates to the technical field of cutting blades, and provides a hole chamfering C-shaped cutter which aims at solving the problems that the existing hole chamfering C-shaped cutter is large in cutting resistance, poor in curling effect, easy to wear, easy to break and the like, and comprises a cutter blade, wherein a plurality of arc chip grooves with the diameter of R1-1.5mm are formed in the surface of the cutter blade, arc chamfer angles with the diameter of R0.02-0.06mm are formed in the edges, close to the outer sides of the cutter blade, of the arc chip grooves, and cutting relief angles with the diameter of 6+/-1 DEG are formed in the side wall of the cutter blade. According to the hole chamfering C-shaped cutter, the arc chip removal grooves can facilitate smooth chip removal of rolling chips, cutting resistance is reduced, the arc chamfering can enhance the abrasion resistance of the cutting edge, and the rear angle eliminates the problem that the workpiece to be processed bounces due to cutting vibration, so that the service life of the cutter is prolonged on the whole, and experiments prove that the hole chamfering C-shaped cutter is smooth in chamfering surface, free of vibration patterns and accurate in roundness of a chamfering round surface, namely good in chamfering machining performance.

Description

Hole chamfering C-shaped cutter

Technical Field

The utility model relates to the technical field of cutting blades, in particular to a hole chamfering C-shaped cutter.

Background

Hole chamfering blades are commonly referred to as cutting tools used in machining to precisely cut a desired chamfer shape for machining of various metal or alloy materials. According to the boring and chamfering combined tool disclosed in the patent with the publication number of CN217254352U, the boring and chamfering combined tool comprises a tool handle, a connecting rod, a chamfering ring and a boring head, wherein one end of the tool handle is used for being connected with a main shaft of a machine tool, one end of the connecting rod is connected with the other end of the tool handle, the chamfering ring is fixedly sleeved outside the connecting rod, and a chamfering blade is arranged on the chamfering ring.

Wherein, for being convenient for carry out accurate side cut processing to the edge of hole, can set up the knife tip into C type structure, more convenient chamfer and the fillet etc. of processing hole. Due to the unique structural characteristics of the C-shaped blade, the C-shaped blade can keep good stability and cutting effect in the cutting process, and the notch design of the blade can also ensure stability and accuracy in cutting.

However, as a cutting tool, the conventional hole chamfering C-shaped cutter has problems in actual use that the insert is always liable to wear, chipping, etc., so that its service life is short, and cutting resistance during use is large and the rolling effect is poor.

Disclosure of utility model

The utility model aims to solve the problems of large cutting resistance, poor coiling and cutting effects, easy abrasion of the blade, tipping and the like of the conventional hole chamfering C-shaped blade. The utility model provides a hole chamfering C-shaped cutter, which is characterized in that a circular arc chip groove is convenient for chip removal and smooth in chip removal, cutting resistance is reduced, the wear resistance of a cutting edge can be enhanced by circular arc chamfering, and the problem of springing of a processed workpiece caused by cutting vibration is solved by a rear angle, so that the service life of the cutter is prolonged on the whole, and experiments prove that the hole chamfering C-shaped cutter has smooth and non-vibration chamfer surface, accurate roundness of a chamfer round surface, namely good chamfering machining performance.

The utility model is realized by the following technical scheme:

The hole chamfering C-shaped cutter comprises a blade, wherein a plurality of arc chip grooves are formed in the surface of the blade, arc chamfer is formed in the edge, close to the outer side of the blade, of each arc chip groove, and a cutting relief angle is formed in the side wall of the blade.

Preferably, the opening transverse diameter of the circular arc chip groove is 1-1.5mm, and most preferably 1.2mm.

Preferably, the arc blunted opening has a transverse diameter of 0.02-0.06mm, most preferably 0.04mm.

Preferably, the cutting relief angle is 6±1 degrees.

Preferably, the chamfering tool further comprises a chamfering tool body, the blade is provided with at least one shaft bolt in a penetrating mode, the shaft bolt is arranged along the direction of the surface of the blade to the bottom surface of the blade, and one end, close to the bottom surface of the blade, of the shaft bolt is detachably connected with the chamfering tool body.

Preferably, the chamfering tool body is provided with a connecting rod, the connecting rod is concavely provided with a chamfer surface, and the blade is arranged on the chamfer surface through the shaft bolt.

The technical scheme of the utility model has the following beneficial effects:

The hole chamfering C-shaped cutter mainly improves the structure of the cutter blade, the arranged arc chip removal grooves are used for facilitating smooth chip removal and cutting resistance reduction, arc dulling is arranged on the side edges of the chip removal grooves, the abrasion resistance of cutting edges can be enhanced, the service life of the cutter blade is prolonged, and rear angles are arranged on the side edges, close to the chip removal grooves, of the cutter blade, so that the cutter blade can cut lightly and quickly, and the phenomenon that a machined workpiece bounces due to cutting vibration is eliminated. Experiments prove that the hole chamfering C-shaped cutter is smooth in chamfer surface, free of vibration marks, accurate in roundness of chamfer round surfaces, good in chamfering processability and long in service life of the blade.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first view structure of a blade in embodiment 1;

FIG. 2 is a schematic view of a second view structure of the blade in example 1;

FIG. 3 is a schematic view of a third view angle structure of the blade in embodiment 1;

FIG. 4 is a schematic view of a fourth view structure of the blade of example 1;

fig. 5 is a schematic structural view of a hole chamfering C-shaped cutter in embodiment 1.

The icons are 1-blade, 11-arc chip groove, 12-arc chamfer, 13-cutting relief angle, 14-axle bolt, 2-chamfer cutter body, 21-connecting rod and 22-chamfer surface.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model 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 utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1

As shown in fig. 1 to 5, the present embodiment provides a hole chamfering C-shaped cutter, which comprises a chamfering cutter body 2 and a cutter blade 1, wherein two axle bolts 14 are arranged in a penetrating manner in the center of the cutter blade 1, the axle bolts 14 are arranged along the direction from the surface of the cutter blade 1 to the bottom surface of the cutter blade 1, one end, close to the bottom surface of the cutter blade 1, of the axle bolts 14 is in threaded connection with the chamfering cutter body 2, the chamfering cutter body 2 is provided with a connecting rod 21, the connecting rod 21 is concavely provided with a chamfer surface 22, and the cutter blade 1 is arranged on the chamfer surface 22 through the axle bolts 14.

In the embodiment, the blade 1 is arranged to be in an outline with an inclined square rectangle and an inverted trapezoid cross section, the surface of the blade 1 is provided with a pair of arc chip grooves 11 with an opening transverse diameter R1.2mm, the pair of arc chip grooves 11 are respectively arranged on two sides of the surface of the blade 1, chip rolling and chip removal are smooth, cutting resistance is reduced, the edge, close to the outer side of the blade 1, of the arc chip grooves 11 is provided with an arc dulling 12 with an opening transverse diameter R0.04mm, the abrasion resistance of the cutting edge can be enhanced, the service life of the cutter is prolonged, and the side wall of the blade 1 is provided with a cutting rear angle 13 with an angle of 6 degrees, so that cutting is light and rapid, and the phenomenon that a machined workpiece flicks due to cutting vibration is eliminated. The size, angle and other parameters of the structure can be adjusted by a person skilled in the art according to the actual use requirements and the like, so that the problems of cutting processing effect and service life of the blade are better considered.

In use, the insert 1 is mounted on the chamfer surface 22 of the chamfer cutter body 2 by using the spindle pin 14 or the like, and the cutter body is mounted on the machining center spindle to chamfer the center hole of the large end and the small end of the crankshaft. By adopting the hole chamfering C-shaped cutter, the chamfer surface is smooth and free of vibration marks, the superposition rate of the chamfer surface 22 and the standard mode fixed-tip conical surface can reach 100% through the blue lead test, namely, the roundness of the chamfer round surface is ensured, and powerful guarantee is provided for the grinding process by using the extremely small tolerance of the center hole positioning rotary grinding shaft diameter.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The hole chamfering C-shaped cutter is characterized by comprising a cutter blade (1), wherein a plurality of arc chip grooves (11) are formed in the surface of the cutter blade (1), arc blunting (12) are arranged on the edge, close to the outer side of the cutter blade (1), of each arc chip groove (11), and cutting relief angles (13) are formed in the side wall of the cutter blade (1).

2. Hole chamfer C-cutter according to claim 1, characterized in that the opening cross-diameter of the circular arc junk slot (11) is 1-1.5mm.

3. Hole chamfer C-cutter according to claim 2, characterized in that the opening transverse diameter of the arc dulling (12) is 0.02-0.06mm.

4. Hole chamfer C-cutter according to claim 1, characterized in that the cutting relief angle (13) is 6±1 degrees.

5. Hole chamfering C-cutter according to any of claims 1-4, further comprising a chamfering cutter body (2), wherein the blade (1) is provided with at least one spindle pin (14) penetrating therethrough, the spindle pin (14) being provided along the surface of the blade (1) in the direction of the bottom surface of the blade (1), the spindle pin (14) being detachably connected to the chamfering cutter body (2) at an end near the bottom surface of the blade (1).

6. The hole chamfering C-shaped cutter according to claim 5, characterized in that the chamfering cutter body (2) is provided with a connecting rod (21), the connecting rod (21) is concavely provided with a chamfer surface (22), and the insert (1) is arranged on the chamfer surface (22) through the spindle pin (14).