CN112872487B - Combined cutter bar for chamfering - Google Patents

Abstract

The invention provides a combined tool holder for chamfering processing. The combined tool holder for chamfering processing comprises: a tool holder; a first tool seat for installing a first blade; a second tool seat for installing a second blade, The second tool seat and the first tool seat are arranged at intervals along the axial direction of the tool handle; the first tool seat is provided with a first installation groove for installing the first blade, and the second tool seat is provided with a second blade for installing the second blade. The second installation groove, the first installation groove and the second installation groove are both right-angle grooves, and the right-angle groove includes two side groove walls arranged at a certain angle and an abutment wall for the same shape as the blade and for being fixed with the blade , the intersection line of the planes where the two side groove walls are located is perpendicular to the axis of the tool handle, and the plane where the fitting wall is located is parallel to the axis of the tool handle. In the present invention, the abutting walls on the two blade bases have the same shape as the blade, which can provide a larger contact area, improve the fixing effect of the blade, improve the force bearing effect of the blade, and reduce the deformation or damage of the blade.

Description

A combined tool holder for chamfering

technical field

The invention relates to the technical field of chamfering processing, in particular to a combined tool holder for chamfering processing.

Background technique

Valve seat parts generally have a 30-degree guide angle. Figure 1 shows a valve seat 100 in the prior art. The inner hole of the valve seat 100 needs to be processed at six 30-degree guide angles, of which three are The inclination direction of the leading angle is the same, it is a group, there are two groups in total, and the two groups have different inclination directions. Therefore, when machining the six leading angles, two different chamfering tools are required, and the three guides are processed first. corner, and then change to another tool to machine the remaining three leading corners. However, the tool change process takes a certain amount of time, which is not only troublesome to operate, but also the processing equipment is in a suspended state during this time, which increases the processing time, reduces the processing efficiency of the parts and the utilization rate of the processing equipment.

In this regard, the Chinese utility model patent with the authorization announcement number CN206662306U discloses a composite chamfering tool, including a tool handle, a tool seat and a blade. In one of the disclosed embodiments, the number of blades is four, wherein Two blades are installed on the upper set of installation seats, and the other two blades are installed on the lower set of installation seats, and the blades are symmetrically distributed on both sides of the axis of the blade seat.

Although, the upper two inserts and the lower two inserts of the above four inserts can respectively process chamfers with different inclination angles, but half of the four inserts are overhanging the outside of the tool seat, which makes the fixing of the inserts and the force effect. Relatively poor, the blade is easily deformed or damaged. And the blades are arranged symmetrically in pairs, and in the actual processing process, each blade rotates in the same direction, which makes one of the two blades more close to the blade seat, while the other is subjected to the force of peeling off the blade seat, Therefore, the stability of the blade cannot be guaranteed at all in the actual processing process, and the blade is easily deformed or detached from the tool seat, which affects the normal processing and production.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a combined tool holder for chamfering, so as to solve the problem that half of the inserts in the prior art are overhanging the outer side of the tool seat, which leads to poor fixing and force-bearing effects of the inserts, and is easy to cause deformation or damage of the inserts. The problem.

In order to achieve the above-mentioned purpose, the combined tool holder for chamfering processing in the present invention adopts the following technical solutions:

A combined tool holder for chamfering, comprising:

handle;

a first tool seat for mounting a first insert having a first cutting angle;

The second tool seat is used for installing the second insert with the second cutting angle, and the second tool seat and the first tool seat are arranged at intervals along the axis direction of the tool holder;

The first blade holder is provided with a first installation groove for installing the first blade, the second blade holder is provided with a second installation groove for installation of the second blade, and both the first installation groove and the second installation groove are right-angle grooves, The right-angle groove includes two side groove walls arranged at a certain angle and a fitting wall that is the same shape as the blade and is fixed to the blade. The intersection of the planes where the two side groove walls are located is perpendicular to the axis of the tool handle. The plane where the closing wall is located is parallel to the axis of the shank.

The beneficial effects of the above technical solutions are: in the present invention, the first installation groove on the first knife seat and the second installation groove on the second knife seat are both right-angle grooves, and the right-angle groove includes two side groove walls and a fitting wall, The fitting wall is used to fit and fix the blade, and the fitting wall has the same shape as the blade, which can provide a larger contact area, thereby improving the fixing effect of the blade, improving the force effect of the blade, and reducing the deformation or damage of the blade. At the same time, the intersection of the planes where the two side groove walls are located is perpendicular to the axis of the shank, and the plane where the fitting wall is located is parallel to the axis of the shank, which not only facilitates the installation and fixation of the blade, but also ensures that the cutting edge of the blade can be chamfered processing.

Further, in order to improve the processing efficiency and at the same time ensure that the force of the blade is more close to the blade seat, to ensure the stability of the blade, and to avoid the blade deformation or separation from the blade seat, the first installation slot and the second installation slot are respectively provided with two , the two first installation grooves are evenly distributed in the circumferential direction of the first tool seat, and the facing walls of the two first installation grooves are in opposite directions, and the two second installation grooves are evenly distributed in the circumferential direction of the second tool seat are arranged, and the directions of the abutting walls of the two second installation grooves are also opposite.

Further, in order to make the force of the entire combined tool bar more uniform and improve the service life of the combined tool bar, the planes where the abutting walls of the two first installation grooves are located are parallel and spaced apart, and the two second installation grooves are The planes in which the walls lie are also parallel and spaced apart.

Further, in order to make the layout more reasonable and the force more uniform, the plane where the abutment wall of the first installation groove is located is perpendicular to the plane where the abutment wall of the second installation groove is located.

Further, in order to facilitate the installation of the insert, an escape groove for avoiding the edge and corner of the insert is processed at the corner between the two side groove walls of the right-angle groove.

Further, in order to facilitate the disassembly and assembly of the blade, a threaded hole for fixing the blade is provided on the fitting wall.

Further, in order to make the structure compact and the design more reasonable, the first tool seat has two first end faces arranged in parallel on both sides of the axis of the tool handle, and the second tool seat has two second end surfaces arranged in parallel on both sides of the axis of the tool handle. The end faces, the first end face and the second end face are perpendicular.

Further, in order to facilitate the installation of the blade and the processing of the avoidance groove, the corner between the two side groove walls of the right-angle groove is machined with an avoidance groove for avoiding the edges and corners of the blade, and the avoidance groove on the first tool seat extends to the second groove. On one end face, the avoidance groove on the second tool seat extends to the second end face.

Further, in order to facilitate the disassembly and assembly of the blade and the processing of the threaded hole, a threaded hole for fixing the blade is provided on the fitting wall, the threaded hole on the first tool seat penetrates the first end face, and the threaded hole on the second tool seat The hole penetrates the second end face.

Description of drawings

1 is a structural diagram of a valve seat in the prior art;

Fig. 2 is a perspective view of a combined tool holder for chamfering in the present invention;

3 is a perspective view of another perspective view of the combined tool holder for chamfering processing in the present invention;

Fig. 4 is the front view of the combined tool holder for chamfering in the present invention;

Fig. 5 is the left side view of the combined tool holder for chamfering processing in the present invention;

Fig. 6 is the right side view of the combined tool holder for chamfering in the present invention;

Fig. 7 is a top view of the combined tool holder for chamfering in the present invention.

In the figure: 100-valve seat; 1-tool holder; 2-first tool seat; 21-first side groove wall; 22-first fitting wall; 23-first avoidance groove; 24-first threaded hole; 25-first end face; 3-second tool seat; 31-second side groove wall; 32-second fitting wall; 33-second avoidance groove; 34-second threaded hole; 35-second end face.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

It should be noted that relational terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The features and performances of the present invention will be further described in detail below in conjunction with the embodiments.

An embodiment of a combined tool holder for chamfering processing (hereinafter referred to as a combined tool holder) in the present invention is shown in Figures 2 and 3, comprising a tool holder 1, a first tool seat 2 and a second tool seat 3, the second tool seat 3 and the first tool seat 2 are arranged at intervals along the axial direction of the tool handle 1, and the second tool seat 3 is located at the end of the combined tool shank.

The first tool seat 2 is used to install a first insert with a first cutting angle (not shown in the figure). Specifically, the first tool seat 2 is provided with a first installation groove for installing the first insert. One of the installation grooves is a right-angle groove. As shown in FIG. 4 , FIG. 5 and FIG. 6 , the right-angle groove on the first tool seat 2 includes two first side groove walls 21 arranged at a certain angle and a wall for connecting with the first insert. The first abutting wall 22, which has the same shape and is fixed to the first blade, has the same shape as the first blade, which can provide a larger contact area, thereby improving the fixing effect of the blade and improving the blade The force effect reduces the deformation or damage of the blade. At the same time, the intersection line of the planes where the two first side groove walls 21 are located is perpendicular to the axis of the tool handle 1, and the plane where the first fitting wall 22 is located is parallel to the axis of the tool handle 1, which not only facilitates the installation and fixation of the blade, but also ensures The cutting edge of the insert can be chamfered.

Further, in order to improve the processing efficiency, there are two first blades, so there are two first installation grooves, and the two first installation grooves are evenly distributed in the circumferential direction of the first blade seat 2, as shown in FIG. 7 . As shown, the orientations of the first abutting walls 22 of the two first installation grooves are opposite, so that when the combined tool bar rotates in one direction for chamfering processing, the force of the two first blades is more close to the first blade. The knife holder 2 ensures the stability of the blade and avoids the blade being deformed or separated from the blade holder. At the same time, the planes on which the first abutting walls 22 of the two first installation grooves are located are parallel and spaced apart, so that the force of the entire combined tool bar can be more uniform and the service life of the combined tool bar can be improved.

In addition, as shown in FIGS. 2 to 6 , the first tool seat 2 has two first end faces 25 arranged in parallel on both sides of the tool holder axis, and the first tool seat 2 between the two first side groove walls 21 has two first end faces 25 . The corners are machined with first avoidance grooves 23 for avoiding the edges and corners of the blade, and the first avoidance grooves 23 extend to the first end surface 25 , thereby facilitating the installation of the first blade. In addition, the first fitting wall 22 is provided with a first threaded hole 24 for fixing the blade, which facilitates the disassembly and assembly of the first blade, and the first threaded hole 24 penetrates through the first end surface 25 to facilitate processing.

The second tool seat 3 is used to install a second insert having a second cutting angle (not shown in the figure), and the overall structure of the second tool seat 3 is equivalent to the first tool seat 2 rotated by 90 degrees. Specifically, the second tool seat 3 is provided with a second installation groove for installing the second blade, and the second installation groove is also a right-angle groove. As shown in FIG. 2 to FIG. 6 , the right-angle groove on the second tool seat 3 includes Two second side groove walls 31 arranged at a certain angle and the second abutting wall 32 which is the same in shape as the second blade and is fixed with the second blade, because the second abutting wall 32 and the second blade The shape is the same, which can provide a larger contact area, thereby improving the fixing effect of the blade, improving the force effect of the blade, and reducing the deformation or damage of the blade. At the same time, the intersection line of the planes where the two second side groove walls 31 are located is perpendicular to the axis of the tool handle 1, and the plane where the second fitting wall 32 is located is parallel to the axis of the tool handle 1, which not only facilitates the installation and fixation of the blade, but also ensures The cutting edge of the insert can be chamfered.

Further, in order to improve the processing efficiency, there are also two second blades, so there are two second installation grooves, and the two second installation grooves are evenly distributed in the circumferential direction of the second blade seat 3, as shown in FIG. 7 . As shown, the orientations of the second abutting walls 32 of the two second installation grooves are opposite, so that when the combined cutter bar rotates in one direction for chamfering processing, the force of the two second blades is more close to the first The second knife seat 3 ensures the stability of the blade and avoids the blade deformation or separation from the knife seat.

Meanwhile, as shown in FIG. 7 , the planes on which the second abutting walls 32 of the two second installation grooves are located are parallel and spaced apart, and the planes on which the first abutting walls 22 of the first installation grooves are located are the same as the planes of the second installation grooves. The plane on which the second abutting wall 32 is located is vertical, so that the force of the entire combined tool bar can be more uniform, and the service life of the combined tool bar can be improved.

In addition, as shown in FIGS. 2 to 6 , the second tool seat 3 has two second end surfaces 35 arranged parallel to both sides of the tool handle axis, and the second end surfaces 35 are perpendicular to the first end surface 25 . The corner between the two second side groove walls 31 on the second tool seat 3 is machined with a second avoidance groove 33 for avoiding the edges and corners of the insert. The second avoidance groove 33 extends to the second end face 35, thereby facilitating the second insert. installation. In addition, the first fitting wall 22 is provided with a second threaded hole 34 for fixing the blade, which facilitates disassembly and assembly of the second blade, and the second threaded hole 34 penetrates the second end surface 35 to facilitate processing.

When the combined cutter bar of the present invention is in use, a total of four inserts are installed on the combined tool bar, two first inserts form a group, have a first cutting angle, and can perform chamfering in an oblique direction. The two second inserts become another set, with a second cutting angle, which can perform chamfering in another inclined direction, so only one tool can be installed on the processing equipment to perform chamfering in different inclined directions, saving The tool change time and operation are greatly simplified, which can improve the processing efficiency of parts and the utilization rate of processing equipment.

Preferably, the combined tool bar of the present invention is used on a machining center. For example, when machining a valve seat, since the size of the valve seat is relatively large, a combined tool bar with an outer diameter much smaller than the inner hole diameter of the valve seat can be manufactured. At the same time, through the combination of the rotation of the tool bar and the revolution along a certain trajectory, the machining of large-diameter chamfering in the valve seat is realized. At the same time, since multiple chamfers need to be processed in the valve seat, a group of inserts can be used at a time to complete the chamfering at different positions. For example, when two first inserts are used, the two second inserts are located in the inner hole of the valve seat. In the groove, there will be no contact with the inner wall of the valve seat to ensure the smooth cutting of the first blade.

In other embodiments of the combined tool holder for chamfering, the threaded holes on the second tool holder may not penetrate the second end face, and the threaded holes on the first tool holder may not penetrate the first end face, and the threaded holes are both Blind hole.

In other embodiments of the combined tool holder for chamfering, the relief groove on the first tool seat may not extend to the first end face, and the relief groove on the second tool seat may not extend to the second end face.

In other embodiments of the combined tool holder for chamfering, the first tool seat may not be provided with two parallel first end faces, for example, the outer circumference of the first tool seat may be a circular arc surface, and the second tool seat is also Two parallel second end surfaces may not be provided, for example, the outer circumference of the second tool seat may be a circular arc surface.

In other embodiments of the combined tool holder for chamfering, the abutting walls of the two tool holders may not have threaded holes, but bolt holes, and use the bolts to pass through the insert and the tool holder and be fixedly connected with the nut to achieve Fixing of the blade.

In other embodiments of the combined tool holder for chamfering, the two tool seats may not be machined with avoidance grooves.

In other embodiments of the combined tool holder for chamfering processing, the plane where the abutment wall of the first installation groove is located and the plane where the abutment wall of the second installation groove is located may not be vertical, but have a clamp other than 90 degrees. horn.

In other embodiments of the combined tool holder for chamfering processing, the planes on which the abutting walls of the two first installation grooves are located may be coplanar, and the planes on which the abutting walls of the two second installation grooves are located may also be coplanar.

In other embodiments of the combined tool holder for chamfering, when both the first insert and the second insert have one, there is only one first installation groove and one second installation groove respectively.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the contents of the description and drawings of the present invention, Similarly, all should be included in the protection scope of the present invention.

Claims (6)

1. A combined tool holder for chamfering, comprising: handle; a first tool seat for mounting a first insert having a first cutting angle; The second tool seat is used for installing the second insert with the second cutting angle, and the second tool seat and the first tool seat are arranged at intervals along the axis direction of the tool holder; It is characterized in that, the first tool seat is provided with a first installation groove for installing the first blade, the second tool seat is provided with a second installation groove for installing the second blade, the first installation groove and the second installation groove are both. It is a right-angle groove, which includes two side groove walls arranged at a certain angle and a fitting wall that is the same shape as the blade and is fitted and fixed with the blade. The axis is vertical, and the plane where the fitting wall is located is parallel to the axis of the tool handle; There are two first installation grooves and two second installation grooves respectively. The two first installation grooves are evenly distributed in the circumferential direction of the first tool seat, and the facing walls of the two first installation grooves are in opposite directions. The second installation grooves are evenly arranged in the circumferential direction of the second tool seat, and the directions of the abutting walls of the two second installation grooves are also opposite; The plane where the abutment wall of the first installation groove is located is perpendicular to the plane where the abutment wall of the second installation groove is located; The first tool seat has two first end surfaces arranged parallel to both sides of the tool handle axis, the second tool seat has two second end surfaces arranged parallel to both sides of the tool handle axis, the first end surfaces and the second end surfaces are perpendicular. 2 . The combined tool holder for chamfering according to claim 1 , wherein the planes where the abutment walls of the two first installation grooves are located are parallel and spaced apart, and the abutment walls of the two second installation grooves are located at an interval. 3 . The planes are also parallel and spaced apart. 3 . The combined tool holder for chamfering according to claim 1 or 2 , wherein the corner between the two side groove walls of the right-angle groove is machined with an escape groove for avoiding the edges and corners of the insert. 4 . 4 . The combined tool holder for chamfering according to claim 1 or 2 , wherein a threaded hole for fixing the insert is provided on the fitting wall. 5 . 5 . The combined tool holder for chamfering according to claim 1 , wherein the corners between the two side groove walls of the right-angle groove are processed with avoidance grooves for avoiding the edges and corners of the insert, and the first tool seat is provided with an escape groove. The escape groove extends to the first end face, and the escape groove on the second tool seat extends to the second end face. 6 . The combined tool holder for chamfering according to claim 1 , wherein a threaded hole for fixing the insert is provided on the fitting wall, the threaded hole on the first tool seat penetrates the first end face, and the second tool The threaded hole on the seat penetrates the second end face.

Images