Fine adjustment type indexable face milling cutter

Abstract

The utility model relates to the technical field of indexable face milling cutters, in particular to a fine adjustment type indexable face milling cutter. In order to solve the problems that in the prior art, a method for adjusting the end face runout of an indexable face milling cutter wastes time and labor and is not high in adjusting precision, the utility model provides a novel fine adjustment type indexable face milling cutter which comprises a cutter body, a plurality of cutter holders, a plurality of blades and a plurality of eccentric pins, and a plurality of cutter holder mounting through grooves are uniformly distributed in the circumferential direction of the cutter body; the multiple tool aprons are installed on the corresponding tool apron installation through grooves through first fastening screws, each tool apron is provided with a blade installation groove, the multiple blades are installed on the corresponding blade installation grooves through second fastening screws, and a pin hole is formed in the top face of the rear end of each tool apron. And a fine adjustment eccentric distance is arranged between the central axis of each ball column and the central axis of the corresponding screw rod. The structure is simple, operation is convenient, trouble and labor are saved, and the adjusting precision is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of indexable face milling cutter, concretely is a fine adjustment type indexable face milling cutter. BACKGROUND

[0002] In modern manufacturing industry, plane milling is an important means to realize the surface machining of complex parts, and the indexable face milling cutter is widely used because of its good cutting performance, long tool life and high production efficiency. The indexable face milling cutter comprises a cutter body, a cutter holder and a blade, the cutter holder is installed on the cutter body, and the blade is installed on the cutter holder. Since the cutter body, the cutter holder and the blade all have manufacturing deviations and installation deviations, the end face runout of the indexable face milling cutter is large, thereby affecting the surface machining quality of the workpiece.

[0003] In the prior art, the blade end face position is adjusted by grinding the blade or adding a gasket to reduce the end face runout of the indexable face milling cutter. However, this method needs to repeatedly disassemble and assemble the blade, which is time-consuming and laborious, and the adjustment accuracy is not high. SUMMARY

[0004] The utility model discloses in order to solve the method that the prior art adjusts the end face runout of indexable face milling cutter exists time -consuming and labor -intensive and the problem of not high adjustment accuracy, and therefore provides a new fine adjustment type indexable face milling cutter.

[0005] The utility model discloses the following technical scheme is adopted:

[0006] A fine adjustment type indexable face milling cutter, comprising a cutter body, a plurality of cutter holders, a plurality of blades, a plurality of eccentric pins, the outer circumferential surface of the cutter body is circumferentially distributed with a plurality of cutter holder installation grooves, the length direction of each cutter holder installation groove is front and rear arrangement, a plurality of cutter holders are installed on the corresponding cutter holder installation grooves through the first fastening screw arranged in the axial direction, the top surface of the front end of each cutter holder is provided with a blade installation groove, a plurality of blades are installed in the corresponding blade installation groove through the second fastening screw arranged in the radial direction, the top surface of the rear end of each cutter holder is provided with a pin hole arranged in the radial direction, the bottom surface of each cutter holder installation groove is provided with a threaded hole, the upper end of each eccentric pin is a spherical column, and the spherical column gap is matched with the corresponding pin hole, the top surface of each spherical column is provided with a screw groove, the lower end of each eccentric pin is a screw rod matched with the threaded hole on the corresponding cutter holder installation groove, and the center axis of each spherical column and the center axis of the corresponding screw rod are provided with a fine adjustment eccentric distance.

[0007] In use, the blade is fixed on the tool holder by the second fastening screw, the tool holder is placed on the tool holder mounting through slot and the pin hole is corresponded with the threaded hole, then the lower end of the eccentric pin is screwed into the threaded hole of the tool holder mounting through slot, the tool holder is fixed on the tool body by the first fastening screw, the initial installation of the indexable face milling cutter is completed, when the end face runout of the indexable face milling cutter is large, that is, the axial position of the blade needs to be adjusted, the first fastening screw is loosened, then the eccentric pin is rotated by half a circle through the rotation groove, the tool holder is pushed forward or backward, thereby the blade is moved forward or backward, the axial position of the blade is finely adjusted, and the first fastening screw is tightened after the fine adjustment, thereby the end face runout of the indexable face milling cutter is reduced.

[0008] Further, the rear end of each tool holder mounting through slot is provided with a positioning groove, and the rear end of each tool holder is integrally extended downward with a positioning portion matched with the corresponding positioning groove.

[0009] Further, the middle part of each eccentric pin is provided with a circular truncated cone coaxially arranged with the screw rod, and the upper part of the threaded hole of the tool body is provided with a limiting hole matched with the circular truncated cone, so that the eccentric pin is prevented from being continuously rotated downward, and the structure is specific and standardized.

[0010] Further, the circular arc relief groove is arranged between the spherical column and the circular truncated cone of each eccentric pin and between the circular truncated cone and the screw rod, and the structure is specific and standardized.

[0011] Further, the bottom surface of the tool holder mounting through slot is inclined and inclined from front to back and upward, the bottom surface of the tool holder is matched with the bottom surface of the tool holder mounting through slot, the front end of the tool holder is convenient for mounting the blade, and the structure is specific and standardized.

[0012] Further, the rotation groove of the top surface of the spherical column is a regular hexagonal groove, and the structure is specific and standardized.

[0013] The micro-adjustable indexable face milling cutter has the advantages that the front and rear positions of the tool holder are moved by the eccentric pin, the front and rear positions of the blade are adjusted, the end face runout of the indexable face milling cutter is effectively reduced, the structure is simple and convenient to operate, labor and time are saved, and the adjustment precision is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0016] Fig. 1 It is a structure schematic view of the present application;

[0017] Fig. 2 It is a left view partial sectional view of the present application;

[0018] Fig. 3 It is a structure schematic view of the eccentric pin in the present application;

[0019] Fig. 4 It is Fig. 3 the top view.

[0020] In the figure: 1-blade body, 2-blade seat, 3-blade, 4-first fastening screw, 5-second fastening screw, 6-pin hole, 7-spherical column, 8-screw rod, 9-circular table, 10-positioning groove, 11-positioning part, 12-circular arc tool withdrawal groove, 13-screw groove. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the above-mentioned purposes, features and advantages of the present application, the following will further describe the solutions of the present application. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the description, it should be noted that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. It should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] In the following description, many specific details are set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from those described herein; Obviously, the examples in the specification are only a part of the embodiments of the present application, not all the embodiments.

[0024] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] As shown in Figs. 1 to 4 A fine adjustment type indexable face milling cutter, comprising a cutter body 1, a plurality of cutter holders 2, a plurality of cutter blades 3, a plurality of eccentric pins, the outer circumferential surface of the cutter body 1 is circumferentially uniformly distributed with a plurality of cutter holder installation through-slots, the length direction of each cutter holder installation through-slot is front and back arrangement, a plurality of cutter holders 2 are installed on the corresponding cutter holder installation through-slots through the first fastening screws 4 which are arranged in the axial direction and the circumferential direction, the top surface of the front end of each cutter holder 2 is provided with a cutter blade installation slot, a plurality of cutter blades 3 are installed in the corresponding cutter blade installation slot through the second fastening screws 5 which are arranged in the radial direction, the top surface of the rear end of each cutter holder 2 is provided with a pin hole 6 which is arranged in the axial direction and the radial direction, the bottom surface of each cutter holder installation through-slot is provided with a threaded hole, the upper end of each eccentric pin is a spherical column 7 and the spherical column 7 is clearance fit in the corresponding pin hole 6, the top surface of each spherical column 7 is provided with a screwing groove 13, the lower end of each eccentric pin is a screw rod 8 which is matched with the threaded hole on the corresponding cutter holder installation through-slot, and the center axis of each spherical column 7 and the center axis of the corresponding screw rod 8 are provided with a fine adjustment eccentricity.

[0026] In use, the cutter blade 3 is fixed on the cutter holder 2 through the second fastening screw 5, the cutter holder 2 is placed on the cutter holder installation through-slot and the pin hole 6 is matched with the threaded hole, then the lower end of the eccentric pin is screwed into the threaded hole of the cutter holder installation through-slot, the cutter holder 2 is fixed on the cutter body 1 through the first fastening screw 4, and the initial installation of the indexable face milling cutter is completed, when the end face runout of the indexable face milling cutter is large, that is, the axial position of the cutter blade 3 needs to be adjusted, the first fastening screw 4 is loosened, then the eccentric pin is screwed by half a circle through the screwing groove 13, the cutter holder 2 is pushed to move forward or backward, thereby driving the cutter blade 3 to move forward or backward, the fine adjustment of the axial position of the cutter blade 3 is realized, and the first fastening screw 4 is tightened after the fine adjustment, thereby reducing the end face runout of the indexable face milling cutter.

[0027] In specific implementation, the rear end of each cutter holder installation through-slot is provided with a positioning groove 10, each positioning groove 10 is located at the rear of the corresponding pin hole 6, and the bottom surface of the rear end of each cutter holder 2 is integrally extended downward with a positioning part 11 which is matched with the corresponding positioning groove 10. When the cutter holder 2 and the corresponding cutter body 1 are initially installed, the initial positioning of the cutter holder 2 can be realized by abutting the rear end surface of the positioning part 11 with the rear side wall of the positioning groove 10, thereby facilitating the initial installation and positioning of the cutter holder 2.

[0028] In the specific implementation, the middle part of each eccentric pin is provided with a circular truncated cone 9, the circular truncated cone 9 is coaxially arranged with the screw rod 8, the upper part of the threaded hole of the cutter body 1 is provided with a limiting hole which is matched with the circular truncated cone 9, thereby avoiding the continuous rotation of the eccentric pin, and the structure is specific and standardized.

[0029] In the specific implementation, the spherical column 7 of each eccentric pin and the circular truncated cone 9, and the circular truncated cone 9 and the screw rod 8 are all provided with a circular arc relief groove 12, thereby making the structure specific and standardized.

[0030] In the embodiment, the bottom surface of the tool holder mounting through slot is inclined and the inclination direction is inclined upward from front to back, the bottom surface of the tool holder 2 is matched with the bottom surface of the tool holder mounting through slot, the front end of the tool holder 2 is convenient to install the tool bit 3, and the structure is specific and standardized.

[0031] In the embodiment, the screw groove 13 on the top surface of the ball column 7 is a regular hexagonal groove, and the structure is specific and standardized.

[0032] The above is only the embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Although the foregoing embodiments are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should be covered in the protection scope of the claims.

Claims

1. A finely adjustable indexable face milling cutter, characterized in that, The tool body (1) includes multiple tool holders (2), multiple blades (3), and multiple eccentric pins. The outer circumference of the tool body (1) has multiple tool holder mounting slots evenly distributed along its length, arranged front to back. Each tool holder (2) is mounted on its corresponding tool holder mounting slot by a first fastening screw (4) arranged circumferentially along its axis. Each tool holder (2) has a blade mounting slot on its top surface at the front end. Each blade (3) is mounted on its corresponding blade mounting slot by a second fastening screw (5) arranged radially. Each tool holder (2)... The top surface of the rear end is provided with pin holes (6) arranged radially in the axial direction. The bottom surface of each tool holder mounting slot is provided with threaded holes. The upper end of each eccentric pin is a ball joint (7) and the ball joint (7) is fitted with the corresponding pin hole (6) with clearance. The top surface of each ball joint (7) is provided with a screw groove (13). The lower end of each eccentric pin is a screw (8) that is adapted to the threaded hole on the corresponding tool holder mounting slot. The central axis of each ball joint (7) and the central axis of the corresponding screw (8) are provided with a fine adjustment eccentricity.

2. The fine-tuning indexable surface milling cutter according to claim 1, characterized in that, Each tool holder has a positioning groove (10) at the rear end of the mounting slot. Each positioning groove (10) is located at the rear of the corresponding pin hole (6). The bottom surface of the rear end of each tool holder (2) has a positioning part (11) that is adapted to the corresponding positioning groove (10) extending downward integrally.

3. The fine-tuning indexable surface milling cutter according to claim 2, characterized in that, Each eccentric pin has a frustum (9) in the middle, the frustum (9) is arranged coaxially with the screw (8), and the cutter body (1) has a limiting hole at the upper part of the threaded hole that is compatible with the frustum (9).

4. The fine-tuning indexable face milling cutter according to claim 3, characterized in that, Each eccentric pin has an arc-shaped relief groove (12) between the ball post (7) and the frustum (9), and between the frustum (9) and the screw (8).

5. A finely adjustable indexable surface milling cutter according to claim 4, characterized in that, The bottom surface of the tool holder mounting slot is a slope and its inclination direction is from front to back and upward. The bottom surface of the tool holder (2) is adapted to the bottom surface of the tool holder mounting slot.

6. A finely adjustable indexable surface milling cutter according to claim 5, characterized in that, The screw groove (13) on the top surface of the ball column (7) is a regular hexagonal groove.

Images