End face groove cutter applied to center-moving type lathe

Abstract

The utility model relates to the technical field of machining tools, in particular to an end face slot cutter applied to a center-sliding lathe, which comprises a cutter arm, cutter heads are convexly formed on the side walls of the two end parts of the cutter arm, the top end faces of the cutter heads are formed into rear cutter faces, and one side face of each cutter head is formed into a front cutter face. A cutting edge is formed at the intersection of the front tool face and the rear tool face of the tool bit, the cutting edge extends from one end of the tool arm to the other end of the tool arm, and the tool is suitable for being installed in a tool tower located on the upper side of a main shaft to groove the end face of a workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of machining tools, and more specifically, to an end face grooving cutter used on a Swiss-type lathe. Background Art

[0002] Swiss-type lathe, also known as "turning center" or "Swiss machine", is a high-precision machining equipment, mainly used for turning complex workpieces, especially in the processing of long rod-shaped workpieces. In a Swiss-type lathe, the tool turret for clamping the tool is usually set in front of the main spindle, so that the tool and the main spindle are arranged in a straight line and symmetrically. The tool turret has limited workstations for clamping the tool. During the multi-step processing of the workpiece, the tool needs to be replaced frequently, which makes the workpiece processing efficiency low. Therefore, in the related technology, some improved Swiss-type lathes are also provided with a tool turret above the main spindle. The tool fixed by the tool turret above the main spindle is used to process the side of the workpiece, reducing the frequency of tool change and improving the workpiece processing efficiency. However, when grooving the end face of the workpiece, the existing end face grooving cutter still needs to be assembled on the tool turret at the front end of the spindle to occupy a tool mounting position of the tool turret. When the tool turret at the front end of the spindle is full of tools, it is still necessary to stop and change tools, which makes the Swiss-type lathe still have limitations in tool installation. Therefore, it is necessary to propose an end face grooving cutter that can be installed on the tool turret on the upper side of the spindle to groove the end face of the workpiece. Utility Model Content

[0003] In order to solve the problem that the existing end face grooving cutter still needs to be assembled on the turret at the front end of the spindle, occupying a tool installation position of the turret, which makes the Swiss-type lathe still have limitations in tool installation, the present application provides an end face grooving cutter for use on a Swiss-type lathe.

[0004] A face grooving cutter used on a Swiss-type lathe comprises a cutter arm, wherein the side walls at both ends of the cutter arm are provided with protruding cutter heads, the top surface of the cutter head is formed as a flank face, and one side surface of the cutter head is formed as a rake face. The cutter head forms a cutting edge at the intersection of the rake face and the flank face, and the cutting edge extends from one end of the cutter arm toward the other end.

[0005] The tool arm is installed in the tool turret on the upper side of the main spindle, and the tool arm is set vertically, the top surface of the tool head faces the end face of the workpiece, and the tool head is a raised shape on the side wall of the end of the tool arm, so that the tool arm avoids the workpiece, and the cutting edge extends from one end of the tool arm to the other end, so that the cutting edge is perpendicular to the extension line of the center of the workpiece, so that the spindle on the lathe drives the workpiece to rotate, and the tool head feeds into the end face of the workpiece to realize grooving of the end face of the workpiece. Furthermore, a double tool head is set, and one tool arm supports two tool heads, which is conducive to cost saving.

[0006] Preferably, the blade arm includes a base and two connecting arms respectively formed on the opposite side walls of the base and extending outward, one of the blade heads is formed on the side wall of one end of the connecting arm away from the base, and the other blade head is formed on the side wall of the other end of the connecting arm away from the base, a bolt hole penetrating the thickness of the base is provided in the middle of the top wall, the thickness of the connecting arm is less than the thickness of the base and the side wall of the connecting arm away from the blade head is flush with the bottom wall of the base so that an avoidance groove is formed between the blade head and the base.

[0007] The tool arm and the external tool handle are fixed by bolts through the bolt holes set in the base, and the tool arm is installed in the tool turret through the connection between the external tool handle and the tool turret. An avoidance groove is formed between the tool head and the base, so that the part between the slotting side wall and the outer wall of the workpiece can be avoided when the tool head feeds. The setting that the thickness of the base is greater than the thickness of the connecting arm also makes the installation of the slotting tool stable.

[0008] Preferably, a side surface of the cutting head close to the base is a first inclined surface, which starts from the side intersecting with the front cutting surface and gradually inclines toward the side of the cutting head away from the base, and the inclination angle is 1-3°.

[0009] By adopting the above technical solution, the first inclined surface is used to make the cutter head avoid the groove wall close to the outer wall of the workpiece after grooving, reducing the contact area between the cutter head and the workpiece, reducing interference and allowing the groove cutter to stably cut the workpiece.

[0010] Preferably, a side surface of the cutting head away from the base is a second inclined surface, and the second inclined surface starts from the side intersecting with the rake surface and gradually inclines toward the side of the cutting head close to the base, and the inclination angle is 1-3°.

[0011] By adopting the above technical solution, the second inclined surface is used to make the cutter head avoid the groove wall away from the outer wall of the workpiece after grooving, reducing the contact area between the cutter head and the workpiece, reducing interference and allowing the groove cutter to stably cut the workpiece.

[0012] Preferably, the flank surface is an inclined surface, and the inclination direction of the flank surface is gradually inclined from the cutting edge side as the starting side toward the bottom surface of the connecting arm, and the inclination angle is 3-5°.

[0013] By adopting the above technical solution, the setting of the back cutting surface as an inclined surface makes it easier to avoid the bottom surface of the groove, reduces interference, and enables the groove cutter to stably cut the workpiece.

[0014] Preferably, both ends of the cutting edge are provided with a blade tip arc.

[0015] By adopting the above technical solution, the arcs of the tool tips at both ends of the cutting edge are conducive to reducing the contact stress between the tool and the workpiece during the cutting process, improving the cutting performance, and improving the smoothness of the cutting process and the quality of the cutting surface.

[0016] Preferably, the connection between the first inclined surface and the top surface of the connecting arm is configured as an arc transition.

[0017] The arc transition facilitates enhancing the connection strength between the cutter head and the connecting arm.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. The tool arm is installed in the tool turret on the upper side of the spindle, and the tool arm is set vertically, the top surface of the tool head faces the end face of the workpiece, and the tool head is a protruding setting on the side wall of the end of the tool arm, so that the tool arm avoids the workpiece, and the cutting edge extends from one end of the tool arm to the other end, so that the cutting edge is perpendicular to the extension line of the center of the workpiece, so that the spindle on the lathe drives the workpiece to rotate, and the tool head feeds into the end face of the workpiece to realize grooving the end face of the workpiece. Furthermore, a double tool head setting is used, and one tool arm supports two tool heads, which is conducive to cost saving.

[0020] 2. The tool arm and the external tool holder are fixed by bolts through the bolt holes set in the base, and the tool arm is installed in the tool turret through the connection between the external tool holder and the tool turret. An avoidance groove is formed between the tool head and the base, so that the part between the slotting side wall and the outer wall of the workpiece can be avoided when the tool head feeds. The setting that the thickness of the base is greater than the thickness of the connecting arm also makes the installation of the slotting tool stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a side view of an end face grooving cutter used on a Swiss-type lathe according to this embodiment.

[0022] Figure 2 This is a front view of an end face grooving cutter used on a Swiss-type lathe according to this embodiment.

[0023] Figure numerals: 1. blade arm; 11. base; 111. bolt hole; 12. connecting arm; 2. blade head; 21. back blade surface; 22. front blade surface; 23. cutting edge; 24. blade tip arc; 25. first inclined surface; 26. second inclined surface; 3. avoidance groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] Reference Figure 1 and Figure 2 A face grooving cutter for use on a Swiss-type lathe comprises a tool arm 1, the tool arm 1 comprising a base 11 and two connecting arms 12 formed on opposite side walls of the base 11 and extending outwards, a tool head 2 is formed on the side wall of the two connecting arms 12 away from the base 11, the top surface of the tool head 2 is formed as a back cutting surface 21, and one side surface of the tool head 2 is formed as a rake cutting surface 22, the tool head 2 forms a cutting edge 23 at the intersection of the rake cutting surface 22 and the back cutting surface 21, the cutting edge 23 extends from one end of the tool arm 1 to the other end, and a tool tip arc 24 is provided at both ends of the cutting edge 23, through the tool tip The arc 24 is beneficial to reducing the contact stress between the tool and the workpiece during the cutting process, improving the cutting performance, and improving the smoothness of the cutting process and the quality of the cutting surface. The base 11 is arranged in a rectangular shape, and the front cutting surface 22 of one cutter head 2 faces one side of the base 11, and the front cutting surface 22 of the other cutter head 2 faces the other side of the base 11, so that the two cutter heads 2 can be exchanged in position by rotating the base 11. After one cutter head 2 is worn, it can be quickly replaced with another cutter head 2 for use, which is more convenient. In addition, the arrangement of the two cutter heads 2 and the support of the two cutter heads 2 by one knife arm 1 is beneficial to saving costs.

[0026] Reference Figure 1 and Figure 2 A bolt hole 111 that penetrates the thickness of the base 11 is provided in the middle of the top wall. The thickness of the connecting arm 12 is less than the thickness of the base 11 and the side wall of the connecting arm 12 away from the cutter head 2 is flush with the bottom wall of the base 11, so that an avoidance groove 3 is formed between the cutter head 2 and the base 11. The avoidance groove 3 avoids the slotting position of the workpiece to the part of the outer wall, and the groove cutter is installed by passing the bolt through the bolt hole 111 and connecting it to the external tool handle. The setting that the thickness of the base 11 is greater than the thickness of the connecting arm 12 makes the contact area between the side of the base 11 and the outer handle larger, so that the groove cutter is installed stably and the tool arm 1 is kept within a good strength range.

[0027] Reference Figure 1 and Figure 2The side surface of the cutter head 2 close to the base 11 is a first inclined surface 25. The first inclined surface 25 starts from the side intersecting with the front cutting surface 22 and gradually inclines toward the side of the cutter head 2 away from the base 11, and the inclination angle is 1-3°, preferably 2°. Through the setting of the first inclined surface 25, the cutter head 2 avoids the groove wall close to the outer wall of the workpiece after grooving, reducing the contact area between the cutter head 2 and the workpiece, reducing interference, and allowing the groove cutter to stably cut the workpiece. The connection between the first inclined surface 25 and the top surface of the connecting arm 12 is provided with an arc transition to enhance the connection strength between the cutter head 2 and the connecting arm 12.

[0028] Reference Figure 1 and Figure 2 The side of the cutter head 2 facing away from the base 11 is a second inclined surface 26. The second inclined surface 26 begins at the side where the rake face 22 intersects and gradually slopes toward the side of the cutter head 2 facing the base 11. The angle of inclination is 1-3°, preferably 2°. The second inclined surface 26 is used to allow the cutter head 2 to avoid the groove wall of the workpiece after grooving, thereby reducing the contact area between the cutter head 2 and the workpiece, and thus reducing interference, allowing the groove cutter to perform stable cutting of the workpiece. Furthermore, the second inclined surface 26 is flush with the end face of the connecting arm 12, which facilitates the connecting arm 12 avoiding the threaded rod when grooving the connection surface between the nut and the threaded rod of a workpiece such as a bolt.

[0029] Reference Figure 1 and Figure 2 The back tool surface 21 is an inclined surface, and the inclination direction is gradually inclined from the side of the cutting edge 23 as the starting side to the bottom surface of the connecting arm 12, and the inclination angle is 3-5°, preferably 3°. The setting of the back tool surface 21 as an inclined surface is convenient for avoiding the bottom surface of the groove, reducing interference, and allowing the groove cutter to stably cut the workpiece.

[0030] The implementation principle of the end face grooving tool used in the present application is: the tool arm 1 is locked with the external tool holder by bolts, and is connected to the tool turret on the upper side of the main shaft through the external tool holder, and the tool arm 1 is set vertically, the top surface of the tool head 2 faces the end face of the workpiece, and the cutting edge 23 on the tool head 2 is perpendicular to the extension line of the center of the workpiece. The main shaft of the lathe drives the workpiece to rotate, and the tool head 2 feeds toward the end face of the workpiece to realize grooving of the end face. The present application is suitable for grooving the end face of the workpiece when installed in the tool turret on the upper side of the main shaft.

[0031] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A face grooving cutter for use on a Swiss-type lathe, characterized by: It includes a knife arm, and the side walls at both ends of the knife arm are protruded with a knife head, the top surface of the knife head is formed as a back knife surface, and one side surface of the knife head is formed as a front knife surface. The knife head forms a cutting edge at the intersection of the front knife surface and the back knife surface, and the cutting edge extends from one end of the knife arm to the other end.

2. The end face grooving cutter for use on a Swiss-type lathe according to claim 1, characterized in that: The knife arm includes a base and two connecting arms respectively formed on the opposite side walls of the base and extending outward, one of the knife heads is formed on the side wall of one end of the connecting arm away from the base, and the other knife head is formed on the side wall of the other end of the connecting arm away from the base. A bolt hole that penetrates the thickness of the base is provided in the middle of the top wall. The thickness of the connecting arm is less than the thickness of the base and the side wall of the connecting arm away from the knife head is flush with the bottom wall of the base, so that an avoidance groove is formed between the knife head and the base.

3. The end face grooving cutter for use on a Swiss-type lathe according to claim 2, characterized in that: A side surface of the cutting head close to the base is a first inclined surface, which starts from a side intersecting with the rake surface and gradually inclines toward a side of the cutting head away from the base, and the inclination angle is 1-3°.

4. The end face grooving cutter for use on a Swiss-type lathe according to claim 2, characterized in that: A side surface of the cutter head away from the base is a second inclined surface, which starts from a side intersecting with the rake surface and gradually inclines toward a side of the cutter head close to the base, with an inclination angle of 1-3°.

5. The end face grooving cutter for use on a Swiss-type lathe according to claim 2, characterized in that: The flank surface is an inclined surface, and the inclination direction of the flank surface is gradually inclined from the cutting edge side as the starting side toward the bottom surface of the connecting arm, and the inclination angle is 3-5°.

6. The end face grooving cutter for use on a Swiss-type lathe according to claim 1, characterized in that: Both ends of the cutting edge are provided with a blade tip arc.

7. The end face grooving cutter for use on a Swiss-type lathe according to claim 3, characterized in that: The connection between the first inclined surface and the top surface of the connecting arm is configured as an arc transition.

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