CN220591595U - Positioning chamfering tool - Google Patents

Abstract

The utility model relates to a cutting tool technical field, in particular to location chamfer sword, this location chamfer sword include the cutter arbor and set up the tool bit on the cutter arbor, set up on the cutter arbor the end of tool bit one end is equipped with the bearing that uses the cutter arbor as the axle, the tool bit is in when the cutter arbor is rotatory the projection of tool bit on the plane of perpendicular to cutter arbor forms two concentric circles, is diameter R1's cutting inner circle and diameter R2's cutting excircle respectively, bearing diameter is greater than or equal to R1 and is less than R2. The bearing cambered surface can be propped against the workpiece to play a role in positioning no matter whether the target workpiece of the chamfering tool is a plane or a cambered surface, so that the cutting depth of the tool bit of the chamfering tool is consistent in cutting operation. The chamfering tool has the effect of simply and quickly positioning the chamfering tool and the workpiece, and is beneficial to realizing standardized machining.

Description

Positioning chamfering tool

Technical Field

The application relates to the technical field of cutting tools, in particular to a positioning chamfering tool.

Background

The chamfering tool can be used for chamfering a groove or a hole as an important component in a tool for machining. With the development of the mechanical industry at present, users put higher demands on the processing quality, the processing reliability, the processing efficiency and the like of products. And (3) pursuing standardized processing to ensure that the cutting angle and the cutting size reach the unified standard.

The existing chamfering tool is mainly designed by adopting a blade and a connecting rod integrally, and when chamfering is carried out on the end head of a workpiece, the workpiece is clamped and positioned on a machine tool, and the chamfering tool with proper specification is selected to cut the workpiece through manual or numerical control operation of the movement of the chamfering tool.

In the related art scheme, the inventor finds that at least the following problems exist: the precision of the cutting angle and the depth is influenced by the positioning precision of the workpiece and the precision of the movement track of the chamfering tool, and particularly when the chamfering processing is carried out on the pipe fitting, the pipe fitting and the chamfering tool are coaxial, so that a great deal of effort is required to be consumed for calibration. Errors in tool setting in the machining process or shaking and the like generated in the machining process can cause inaccurate chamfering, and the requirements of standardized machining are difficult to meet.

Disclosure of Invention

In order to meet the requirements of standardized machining, the simple and rapid positioning of the chamfering tool and the workpiece is achieved, the positioning chamfering tool is provided, a bearing taking the tool bar as an axis is arranged at the end, close to one end of the tool bit, of the tool bar, the chamfering tool is enabled to keep the distance between the tool bit and the workpiece in a mode that the cambered surface of the bearing is abutted against the workpiece, and vibration caused by friction between the chamfering tool and the workpiece is relieved by the bearing.

The application provides a location chamfer sword adopts following technical scheme:

the utility model provides a location chamfer sword, includes the cutter arbor and sets up the tool bit on the cutter arbor, set up on the cutter arbor the end of tool bit one end is equipped with the bearing that uses the cutter arbor as the axle, the tool bit is in when the cutter arbor is rotatory the projection of tool bit on the plane of perpendicular to cutter arbor forms two concentric circles, is the cutting internal circle of diameter R1 and the cutting excircle of diameter R2 respectively, bearing diameter is greater than or equal to R1 and is less than R2.

Through adopting above-mentioned technical scheme, when the chamfer sword is turning and milling, no matter the object work piece butt face is plane or cambered surface, all can support the bearing cambered surface and play the locate action on the work piece, guarantee that the chamfer sword cutter bit depth of cut is unanimous in the cutting operation, the friction that the work piece produced with the chamfer sword support to support in addition to the rotation of bearing has eliminated, makes the safe stable support of chamfer sword lean on the work piece, satisfies standardized processing's requirement.

Optionally: the cutter bar is provided with a cutter seat, and the cutter head is arranged in the cutter seat through a bolt.

Because the chamfer sword needs to support the work piece with the bearing cambered surface and realize the location, and the cutter arbor cutting angle of the tool bit of integrated design is limited, through adopting above-mentioned technical scheme, the tool bit can be dismantled, conveniently changes the tool bit of different inclination, and the tool bit is wearing part simultaneously, can prolong the holistic life of chamfer sword.

Optionally: the cutter seat is provided with a plurality of mounting grooves, the blade is in different R1 and/or R2 in each mounting groove, and the cutter head is embedded in any mounting groove.

Through adopting above-mentioned technical scheme, the blade holder is provided with the mounting groove of a plurality of different angles, makes the tool bit inlay and locates in each mounting groove and be different cutting angle to in order to provide different cutting angle, and guarantee that the tool bit can't change at cutting in-process angle.

Optionally: the mounting grooves are partially overlapped and concentrically arranged, and the bolts are arranged at the centers of the mounting grooves and penetrate through the cutter bar.

Through adopting above-mentioned technical scheme, the mounting groove of concentric setting when needs change tool bit angle, unscrew the bolt and with the tool bit use the bolt as the axle rotatory to corresponding mounting groove can, improved the efficiency that the tool bit switches between a plurality of mounting grooves.

Optionally: the bolt is provided with a limiting structure for preventing the bolt from being pulled out of the cutter bar.

Through adopting above-mentioned technical scheme, limit structure prevents that the bolt from taking out completely from the cutter arbor after unscrewing, avoids tool bit and bolt carelessly to drop and damage or lose when switching the mounting groove of tool bit.

Optionally: the bolt penetrates through the cutter bar, and one end, far away from the bolt cap, of the bolt extends out of the cutter bar to a length greater than the depth of the mounting groove; the limiting structure is a nut arranged at one end, far away from the bolt cap, of the bolt.

By adopting the technical scheme, the length of the bolt protruding out of the cutter bar is larger than the depth of the mounting groove, and when the mounting groove is switched after the bolt is unscrewed, the nut is propped against the cutter bar, so that the bolt cannot be completely pulled out, and the bolt and the cutter head are prevented from being carelessly dropped, damaged or lost; simultaneously, after the bolt is screwed, the nut can be screwed to form bidirectional locking, so that the tool bit is more firmly installed, the bolt is prevented from being vibrated loose by vibration generated under the high-speed rotating state of the chamfering tool, the tool bit is shifted to influence the cutting precision and quality, and the chamfering tool further meets the requirement of standardized processing.

Optionally: the tool apron is a circular groove with the diameter larger than the distance between the two farthest ends of the tool bit, and the bolt is arranged at the center of the tool bit and the center of the circular groove.

By adopting the technical scheme, after loosening the bolts, the cutter head can rotate in the circular groove by taking the bolts as shafts and can be fastened at any angle to perform cutting operation, so that stepless transformation is realized.

Optionally: the circular grooves and the joint surface of the cutter head are provided with friction structures for increasing resistance.

Through adopting above-mentioned technical scheme, increase the frictional force between circular recess and the tool bit faying face through friction structure to avoid the tool bit to receive the extrusion and rotate the displacement relative bolt when cutting the work piece, lead to the tool bit cutting angle to change, influence cutting accuracy and quality, further improve the stability of tool bit on the basis of bolt fastening tool bit.

Optionally: the tool bit is made of hard alloy materials.

By adopting the technical scheme, the cutter head made of the hard alloy material has higher cutting efficiency and higher processing quality than a high-speed steel cutter head.

In summary, the present application has the following beneficial effects:

1. the bearing taking the cutter bar as an axis is arranged at one end of the cutter bar, which is close to the cutter head, so that the chamfer cutter keeps the distance between the cutter head and the workpiece in a mode that the cambered surface of the bearing is abutted against the workpiece, and the bearing simultaneously relieves vibration caused by rotation friction and meets the requirement of standardized machining;

2. the tool bit can be fixed in the tool apron at any angle to form cutting angles with different angles, so that various cutting requirements are met;

3. the cooperation of bolt, nut not only can avoid the tool bit carelessly to drop and damage or lose, simultaneously, still constitutes two-way locking, makes the tool bit installation more firm, prevents that the vibrations that the chamfer sword produced under the state of high-speed rotation from shaking the bolt loose, leads to the tool bit to shift and influences cutting precision and quality to and take place unexpected danger.

Drawings

FIG. 1 is a schematic overall structure of embodiment 1;

FIG. 2 is a front view of embodiment 1 showing the arrangement of the bearing and the cutter head;

FIG. 3 is a front view of embodiment 2 showing the structure of a mounting groove, with broken lines showing the position of a cutter head embedded in another mounting groove;

FIG. 4 is a side view of example 2, showing the arrangement of bolts and nuts;

fig. 5 is a front view of embodiment 3 showing the structure of a circular groove, with the broken line portion showing the position of the cutter head rotated to another cutting angle.

In the figure, 10, knife bar; 20. a cutter head; 30. a bearing; 40. a tool apron; 41. a mounting groove; 42. a circular groove; 50. a bolt; 60. a nut; 70. chip removal groove.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Example 1: a positioning chamfer cutter, as shown in fig. 1, includes a cutter bar 10 and a cutter head 20.

Illustratively, the cutter bar 10 has a thick end and a thin end, the thick end is used as a cutting end, the thin end is used as a clamping end, two streamline chip grooves 70 are symmetrically formed in the thick end along the axial direction, the bottom of each chip groove 70 is provided with a cutter holder 40, and each cutter head 20 is embedded in each cutter holder 40. It will be appreciated that various tool holders 10 having the above-described features are contemplated as having the tool holder 10 described herein, and that a corresponding number of junk slots 70 and tool holders 40 may be provided depending on the number of tool tips 20 actually required.

The thick end of the cutter bar 10 is provided with a bearing 30 which is perpendicular to the cutter bar 10 and takes the cutter bar 10 as the axis

The tool bit 20 is made of hard alloy material, the tool bit 20 is connected to the tool bar 10 through a bolt 50 penetrating through the center of the tool bit 20, and a bolt cap of the bolt 50 is embedded into the tool bit 20. Referring to fig. 2, the cutting edge of the cutter head 20 is inclined to the bearing 30, and when the cutter bar 10 rotates, the two cutting edges of the cutter head 20 form circular trajectories with diameters R1 and R2, respectively, and the diameter of the bearing 30 is equal to or greater than R1 and smaller than R2.

Working principle:

firstly, a chamfering tool is arranged, a tool bar 10, a tool bit 20 and a bearing 30 which are matched are selected, the tool bit 20 is embedded into a tool holder 40 and fixed through a bolt 50, and the bearing 30 is arranged at the thick end of the tool bar 10.

The milling machine clamps the thin end of the cutter bar 10, and the milling machine is started to enable the chamfering cutter to rotate at a high speed. The milling machine is operated to bring the arc surface of the bearing 30 into abutment with the side wall of the target workpiece, the bearing 30 is relatively stationary with respect to the target workpiece due to friction, and the cutter bar 10 rotates at a high speed in the bearing 30 while maintaining a fixed distance from the target workpiece.

At this time, the milling machine is continuously operated to perform chamfering operation, and the edge of the tool bit 20 protruding from the side of the tool shank 10 cuts the edge of the object workpiece into an inclined surface having the same angle as that of the tool bit 20, and the metal chips are discharged along with the streamline chip groove 70.

Example 2: as shown in fig. 3, the difference from embodiment 1 is that the tool holder 40 in the chip groove 70 is a plurality of mounting grooves 41 which are partially overlapped and concentrically arranged, and in this embodiment, two mounting grooves 41 having inclination angles of 45 ° and 75 ° are exemplified.

Referring to fig. 4, the cutter head 20 is coupled to the cutter bar 10 by a bolt 50 penetrating through the center of the cutter head 20, and the end of the bolt 50 remote from the cap extends beyond the cutter bar 10 by a length greater than the depth of the mounting groove 41. The end of the bolt 50 remote from the cap is connected to a nut 60.

Working principle:

when the chamfering tool is arranged, the tool bit 20 is provided with different mounting grooves 41, and the inclination angles of the edge of the tool bit 20, which protrudes from one side of the tool bar 10, are different, so that the object workpiece cuts an inclined surface with a corresponding angle. After the bolt 50 is tightened, the nut 60 is further tightened to lock the bit 20 in both directions.

When it is necessary to change the mounting groove 41 in which the cutter head 20 is fitted, the nut 60 is first unscrewed, but the bolt 50 is not completely separated, and then the bolt 50 is unscrewed, so that the cutter head 20 can be taken out of the mounting groove 41, and rotated about the bolt 50 to be re-fitted into the other mounting groove 41, and the bolt 50 and the nut 60 are sequentially screwed to complete the position change of the cutter head 20.

Example 3: a positioning chamfer cutter, as shown in fig. 5, differs from embodiment 2 in that the seat 40 in the junk slot 70 is a circular recess 42 having a diameter greater than the diagonal distance of the bit 20.

The engagement surfaces of the circular recess 42 and the cutter head 20 are provided with friction features that increase drag. For example, a sand blaster is used for directly surface blasting of silica particles or diamond grains, and then surface passivation is carried out; or the surface is firstly drawn and then sandblasted, so that a better sand surface effect can be obtained.

A bolt 50 extends through the center of the bit 20 and the circular recess 42 to connect the bit 20 to the shank 10, and the end of the bolt 50 remote from the cap extends out of the shank 10 and is connected to a nut 60.

Working principle:

when the chamfering tool is arranged, the tool bit 20 is adjusted to a required cutting angle by the aid of a measuring tool, the bolt 50 is screwed, and then the nut 60 is screwed, so that bidirectional locking is formed on the tool bit 20.

When the cutting angle of the cutter head 20 needs to be changed, the nut 60 is unscrewed firstly, but the bolt 50 is not completely separated, then the bolt 50 is unscrewed, the cutter head 20 can rotate in any angle in the circular groove 42 by taking the bolt 50 as an axis, after the cutter head 20 is assisted to be adjusted to the required cutting angle by the measuring tool, the bolt 50 and the nut 60 are screwed in sequence, and the adjustment of the cutter head 20 is completed.

When the tool bit 20 cuts a workpiece, the tool bit 20 is pressed by the workpiece and tends to rotate around the bolt 50, and after the abrasive blasting roughening treatment is performed on the joint surface between the circular groove 42 and the tool bit 20, the contact area is increased, so that the friction force is larger, and the rotation of the tool bit 20 is restrained.

The embodiments of the present utility model are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. The utility model provides a location chamfer sword, includes cutter arbor (10) and sets up tool bit (20) on cutter arbor (10), characterized by: the end of the cutter bar (10) at one end of the cutter head (20) is provided with a bearing (30) taking the cutter bar (10) as an axis, when the cutter bar (10) rotates, the projection of the cutter head (20) on a plane perpendicular to the cutter bar (10) forms two concentric circles, namely a cutting inner circle with the diameter R1 and a cutting outer circle with the diameter R2, and the diameter of the bearing (30) is more than or equal to R1 and less than R2.

2. The locating chamfer cutter of claim 1, wherein: the cutter bar (10) is provided with a cutter holder (40), and the cutter head (20) is installed in the cutter holder (40) through a bolt (50).

3. The locating chamfer cutter of claim 2, wherein: the tool apron (40) is provided with a plurality of mounting grooves (41), the blade is in different R1 and/or R2 in each mounting groove (41), and the tool bit (20) is embedded in any mounting groove (41).

4. A positioning chamfer cutter as defined in claim 3, wherein: the mounting grooves (41) are partially overlapped and concentrically arranged, and the bolt (50) is arranged at the center of the mounting groove (41) and penetrates through the cutter bar (10).

5. The locating chamfer cutter of claim 4, wherein: the bolt (50) is provided with a limiting structure for preventing the bolt (50) from being pulled out of the cutter bar (10).

6. The locating chamfer cutter of claim 5, wherein: the bolt (50) penetrates through the cutter bar (10), and one end, far away from the bolt cap, of the bolt extends out of the cutter bar (10) to a length greater than the depth of the mounting groove (41); the limiting structure is a nut (60) arranged at one end, far away from the bolt cap, of the bolt (50).

7. The locating chamfer cutter of claim 2, wherein: the tool apron (40) is a circular groove (42) with the diameter larger than the distance between the farthest two ends of the tool bit (20), and the bolt (50) is arranged at the centers of the tool bit (20) and the circular groove (42).

8. The locating chamfer cutter of claim 7, wherein: the joint surfaces of the circular grooves (42) and the cutter head (20) are provided with friction structures for increasing resistance.

9. The locating chamfer cutter of claim 1, wherein: the tool bit (20) is made of hard alloy materials.