CN213080281U - Combined cutter device for drawing axial non-through groove - Google Patents

Abstract

The utility model relates to a combination formula cutter device that groove was not led to drawing axial, by fixed body 1, rotatory cutter body 2, compress tightly gasket 3, gland nut 4, application of force pole 5, stop pin 6, locating pin 7, shaping blade 8, compress tightly the screw 9 and constitute, utilize this kind of combination formula cutter device, can conveniently realize the broaching processing of the little circular arc in less width size axial groove and the corner inscription, production efficiency is high, high quality, can solve the processing difficult problem of special profile in the machining, this combination formula cutter simple structure, low in manufacturing cost.

Description

Combined cutter device for drawing axial non-through groove

Technical Field

The utility model relates to a machine-building cold processing field is a combination formula cutter device that groove is not led to the drawing axial. By utilizing the combined type cutter device, the broaching processing of small width size, axial non-through grooves and small arcs at corners as shown in figure 2 can be conveniently realized, the production efficiency is high, and the quality is good. The combined type cutter device is simple in structure and low in manufacturing cost.

Background

The existing processing method for solving the problems of small width, no axial through groove and small arc at the corner is to firstly use a large-diameter saw blade milling cutter to mill and then manufacture a corresponding precise electrode to carry out electric spark ablation processing on the large cutter arc generated by milling, and has the advantages of low processing efficiency, poor quality, large electrode consumption and high cost.

Disclosure of Invention

The utility model aims to provide a can install on the center lathe sword platform, on the machining center main shaft, numerical control lathe, the combination formula cutter device on the turning center sword platform. The eccentric rotary cutter body design is utilized, and the cutting edge of the cutter can be rotated and cut in a manual or electric mode, so that the cutting machining of a small arc inscribed in an axial blind groove is realized, and meanwhile, the rotation angle of the cutter can be positioned, and the linear cutting machining is realized.

The utility model discloses a task is realized with the mode as follows, to install the combination formula cutter device on lathe as an example, and approximate zigzag shape in the section, the upper and lower plane is parallel to each other, and on the plane was provided with the fixed body of mating holes on the perpendicular to, the rotatory cutter body that can free rotation was installed, then installs the shaping blade on the rotatory cutter body, guarantees that shaping blade cutting edge to rotatory cutter body centre of gyration size, should equal with the circular arc radius value of work piece cell type corner that will process. And then the combined tool device is arranged on a tool post of a common lathe by adjusting the central position of the groove type to be processed by the tool pair. Meanwhile, the workpiece is clamped, and axial broaching machining can be carried out on the workpiece. The specific broaching process is as follows: by utilizing the rotary cutter body, the front surface of the blade is firstly rotated to a broaching plane of a workpiece to be broached and positioned in a mutually vertical position, aligning the cutter to a zero position on the radial surface of the workpiece, axially moving the cutter to a certain distance beyond the broaching initial end surface of the workpiece, then radially feeding the cutting depth, the lathe carriage can be manually moved axially to drive the combined type cutter device to carry out broaching processing of the axial straight-line segment, when the cutting edge of the cutter axially moves from the end surface of the groove to reach the position of the arc tangent point at the groove-shaped corner of the workpiece, the combined cutter device stops moving axially, then the cutting edge of the combined cutter device blade rotates and simultaneously carries out cutting processing of the inscribed small arc section, when the blade rotates to the other tangential point of the circular arc according to a required angle, the blade is positioned and fixed again, and the dragging plate in the lathe is shaken manually and pulled out in the radial direction for cutting, so that the one-time broaching processing process of the whole profile with axially-disconnected grooves can be completed. The broaching is repeated for many times, and the broaching processing of the small-width axial non-through groove and the small circular arc at the corner can be realized.

Drawings

The combined cutter device for drawing the axially-discontinuous groove on the common lathe is described in detail below by combining the attached drawings.

Fig. 1 is a perspective view of the combined cutting tool device of the present invention, which is composed of a fixing body (1), a rotary cutter body (2), a pressing gasket (3), a pressing nut (4), a reinforcing rod (5), a stop pin (6), a positioning pin (7), a forming blade (8), and a pressing screw (9).

Fig. 2 is a perspective view of the combined cutting tool device of the present invention, which can draw a non-through groove in the axial direction.

Fig. 3 is a schematic view of the combined cutter device of the present invention showing the motion state of the cutting blade during broaching.

Fig. 4 is a perspective view of the fixing body of the combined cutting tool device of the present invention.

Fig. 5 is a perspective view of a rotary cutter body of the combined cutter device of the present invention.

Fig. 6 is a schematic view of three types of formed blades usable with the combination cutting tool assembly of the present invention.

Detailed Description

Referring to fig. 1, 2, 3, 4, 5, 6. Firstly, a fixing body (1) with a Z-shaped section is manufactured, for example, a three-dimensional part figure 4 is provided, the upper plane and the lower plane of the fixing body are parallel to each other, the upper plane of the fixing body is provided with a bearing hole vertical to the plane, the fixing body is also provided with two positioning pin holes for installing a positioning pin (7), the lower plane of the fixing body is used as a reference plane, and the fixing body can be installed and fixed on a tool post of a common lathe.

In addition, on the manufactured rotary cutter body (2), as shown in a three-dimensional part figure 5, a matching surface which is matched with a bearing hole on the fixed body (1) and can freely rotate relative to the bearing hole, a gasket matching surface, a fastening thread and a stress application rod hole are arranged. Meanwhile, an eccentric positioning shaft, a positioning pin and a fastening screw hole are further formed in the other end of the rotary cutter body (2), and the positioning shaft in an eccentric state can ensure that after the installation forming blade (8) is positioned and fastened, the cutting edge has a turning radius which is equal to the turning radius of an arc at the corner of the axial blind groove to be machined relative to the axis of the rotary cutter body (2). One end of the eccentric positioning shaft of the rotary cutter body (2) is milled into a sector which is 1\4 smaller than the cylindrical section so as to eliminate the interference phenomenon between the workpiece and the rotary cutter body (2) during the rotary processing.

Install gasket (3) on rotatory cutter body (2) and fixed body (1), install a stop pin (6) on the excircle, play limiting displacement when its effect rotates between two locating pins (7) of installing on with fixed body (1).

The forming blade (8) is a two-edge blade, a three-edge blade or a four-edge blade, fig. 6 is a schematic diagram of three forming blades, the forming blades are made of special-shaped high-hardness materials with the same width as a drawing groove, a cutting blade extends from the top end of a special-shaped body, and the cutting blade is the blade length formed by an excircle generatrix of a rotating radius and the width part of the blade when the blade works. It has a circular arc back angle smaller than the radius of the circular arc inscribed in the axial blind groove to be processed, so as to prevent the back angle from interfering with the workpiece during rotary cutting.

The combined type cutter device with the assembled parts is installed on a common lathe tool post, the height of the center of a blade is adjusted to be coincident with the height of the center of a machine tool, a stress application rod (5) is installed on a rotary cutter body (2), and broaching machining can be carried out on the small-width axial non-through groove and the small circular arc at the corner after a workpiece is installed on a lathe chuck.

When the combined type cutter device works, a force applying rod (5) of the combined type cutter device is held by a hand to drive a rotary cutter body (2), a forming blade (8) and a gasket (3) rotate simultaneously to enable a stop pin (6) to move to be tightly attached to a positioning pin (7) for positioning, at the moment, the front of the blade rotates to a position which is perpendicular to a cutting plane of a workpiece to be broached, then a lathe carriage is manually moved to drive the combined type cutter device to perform broaching processing on an axial straight line part, when a cutter cutting edge of the cutter reaches the position of an arc tangent point of a groove corner of the workpiece, axial feeding of the broaching device is stopped, the cutter body (2) is manually rotated by the force applying rod (5), the forming blade (8) and the gasket (3) simultaneously rotate to enable the stop pin (6) to move to be tightly attached to another positioning pin (7) for positioning, namely, the cutter cutting edge reaches the position of another arc tangent point, the broaching process of the whole molded surface of the axial groove can be finished once, the whole broaching process is shown in a schematic diagram of the motion state of the cutting process of the blade in figure 3, and the required broaching task can be finished after the broaching process is repeated for a plurality of times.

Claims (2)

1. Combined type cutter device that drawing axial does not lead to groove comprises fixed body (1), rotatory cutter body (2), compresses tightly gasket (3), gland nut (4), forcing rod (5), stop pin (6), locating pin (7), shaping blade (8), compresses tightly screw (9), characterized by: a fixing body (1) with a Z-shaped section is made, the upper plane and the lower plane of the fixing body are parallel to each other, the upper plane of the fixing body is provided with a bearing hole vertical to the plane, and the fixing body is also provided with two positioning pin holes for installing a positioning pin (7), the lower plane of the fixing body is used as a reference plane and can be installed and fixed on a tool post of a common lathe; the manufactured rotary cutter body (2) is provided with a matching surface, a gasket matching surface, a fastening thread and a stress application rod hole, wherein the matching surface is matched with a bearing hole on the fixed body (1) and can freely rotate relative to the bearing hole; meanwhile, an eccentric positioning shaft, a positioning pin and a fastening screw hole are further formed in the other end of the rotary cutter body (2), and the positioning shaft in an eccentric state can ensure that after the installation forming blade (8) is positioned and fastened, the cutting edge is equal to the circular arc turning radius of the corner of the axial blind groove to be machined relative to the axis turning radius of the rotary cutter body (2).

2. The modular tooling assembly of claim 1 wherein: the forming blade (8) is a two-edge blade, a three-edge blade or a four-edge blade.

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