Combined multi-aperture boring tool

Abstract

The utility model relates to a combined multi-aperture boring tool in the field of machining equipment, which comprises a connecting shaft base, an adjusting tool rest and a mounting tool apron, a long groove is arranged on the front side of the connecting shaft base and used for clamping the adjusting tool rest, and a central through hole is formed in the middle of the bottom of the long groove in a penetrating manner and used for penetrating a connecting screw between the connecting shaft base and a main shaft; the adjusting knife rest is a T-shaped square block capable of being embedded in the long groove, a boss is arranged on the front side of the adjusting knife rest, positioning through holes are formed in the two ends of the boss, and at least two sets of adjusting screw holes are formed in the bottom of the long groove in a matched mode and can be connected with the adjusting screw holes in a combined mode through adjusting screws. The installation tool apron is an I-shaped square block capable of riding on the boss to slide and move, a sliding groove is formed in the rear side of the installation tool apron and connected with the boss through a jackscrew combination, and a boring tool clamping groove is formed in the front side of the installation tool apron. The boring tool can adapt to machining of inner holes with various hole diameters through one tool rest, the adaptable machining range is expanded, the trouble of frequently replacing the tool rests is avoided, and meanwhile the number and cost of the tool rests are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of machining equipment, and in particular relates to a combined multi-aperture boring tool. Background Art

[0002] Boring machines, milling machines, and lathes are all relatively common machining equipment. Lathes are mainly used for turning of external cylindrical surfaces, milling machines are mainly used for milling planes, and boring machines are mainly used for boring holes. The boring tool of a boring machine is generally installed on its rotating spindle through a boring tool fixture (tool holder). The spindle drives the boring tool to rotate and then perform mechanical processing such as expanding holes and drawing on the inner hole of the workpiece. The existing boring machine tool holders are matched and used according to the aperture of the inner hole of the workpiece to be processed. The tip position of the boring tool is fixed or the adjustable range is very small, which results in a model of tool holder that can only process inner holes of a certain aperture or at most can process inner holes of similar apertures with very small deviations. When a workpiece or multiple workpieces need to process multiple holes with different diameters and large deviations, it is necessary to frequently replace the matching tool holder to ensure that the tip of the boring tool can touch the inner wall of the hole to be processed. This will not only increase the workload of the operator and affect the working efficiency of the boring machine, but also require the purchase of multiple models of tool holders. The price of each boring machine tool holder is not cheap, which will undoubtedly greatly increase the capital investment of the equipment. Therefore, it is necessary to design a boring tool fixture that can adapt to the processing of multiple hole diameters. Utility Model Content

[0003] In view of the above situation, the utility model provides a combined multi-aperture boring tool fixture, which greatly expands the adjustable range of the boring tool tip position. One tool holder can adapt to internal hole processing of various aperture sizes, which effectively solves the trouble of frequent replacement of tool holders.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A combined multi-aperture boring tool tool comprises a main shaft of a boring machine, a boring tool and a tool holder assembly, wherein the tool holder assembly comprises a connecting shaft base, an adjusting tool holder and a mounting tool seat, wherein the connecting shaft base is a long strip block structure arranged perpendicular to the main shaft direction, a long groove is provided in the center of the front side of the connecting shaft base along its length direction for clamping the adjusting tool holder, a central through hole is provided in the middle of the bottom of the long groove for passing the connecting screws between the connecting shaft base and the main shaft.

[0006] The adjustable tool holder is a T-shaped block that can be embedded in the long slot connected to the base for adjustment and displacement. A boss is fixedly provided on the front side of the adjustable tool holder in the center along the extension direction of the long slot. Positioning through holes are provided at both ends of the boss. At least two groups of adjusting screw holes corresponding to the two positioning through holes are provided at the bottom of the long slot. The two positioning through holes can be combined and connected with each group of adjusting screw holes in turn by an adjusting screw, thereby realizing the displacement adjustment of the adjustable tool holder.

[0007] The mounting tool seat is an I-shaped block that can slide and shift on the boss of the adjusting tool holder. A sliding groove is provided in the center of the extension direction of the boss on the rear side of the mounting tool seat for cooperating with riding on the boss. A top screw through hole is provided on the side wall of the sliding groove. The sliding groove and the boss are connected by a top screw locking and positioning combination. A boring tool slot is provided on the front side of the mounting tool seat for cooperating with the boring tool. Mounting screw holes are provided on both side walls of the mounting tool seat for inserting mounting screws to fasten the boring tool.

[0008] Preferably, an eccentric through hole is also penetrated in the long groove on one side of the central through hole, and the coupling base can also be connected to the main shaft through the eccentric through hole by passing a connecting screw. When the connecting screw connects the coupling base and the main shaft through the eccentric through hole, the extension length of the coupling base can be further extended.

[0009] Furthermore, a counterweight installation hole is provided at one end of the coupling base close to the eccentric through hole, which is used for connecting and installing a counterweight block to offset the eccentric force of rotation when the coupling base is eccentrically installed.

[0010] Furthermore, positioning holes are provided on the sides of the central through hole and the eccentric through hole, and a positioning pin is provided at the front end of the main shaft for cooperating with the positioning pin on the main shaft to realize the positioning of the coupling base.

[0011] Preferably, the two side walls of the boss of the adjusting tool holder are provided with external toothed surfaces along the length direction thereof, and the two inner side walls of the slide groove of the mounting tool holder are provided with internal toothed surfaces meshing and plugging with the external toothed surfaces.

[0012] Preferably, the central through hole, the eccentric through hole and the positioning through hole are all countersunk screw holes, and accordingly, the connecting screws and the adjusting screw holes are both located in the countersunk screw holes when being locked.

[0013] Preferably, the boring tool comprises a shank and a tool, the shank of the boring tool is provided with a mounting through hole corresponding to the mounting screw hole, the shank of the boring tool is fixedly connected to the mounting seat by mounting screws, and the tool is mounted on the outer end of the shank.

[0014] The utility model also includes other components that enable it to be used normally, which are all conventional means in the field. In addition, devices or components not limited in the utility model, such as: boring machines and their spindles, boring tools, etc., all adopt the existing technology in the field.

[0015] The beneficial effects of the utility model are as follows:

[0016] The combined multi-aperture boring tool fixture, through the combined connection of the three parts of the connecting shaft base, the adjusting tool holder, and the mounting tool holder, gradually expands the radius range that the boring tool can reach, and can adapt to the processing of internal holes with various apertures. In addition, the combined installation positions of the connecting shaft base, the adjusting tool holder, and the mounting tool holder can further adjust the extension length, further expanding the types of large-diameter internal holes that the boring tool can process. The boring tool fixture can meet the boring processing of various apertures with one tool holder, avoiding the trouble of frequently replacing the boring tool holder, reducing the workload and labor intensity of workers, and improving the utilization rate and work efficiency of the boring machine; at the same time, it also reduces the types and number of tool holders required, saving a lot of capital investment in boring machine tool holders. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the coupling base in the embodiment.

[0018] Figure 2 for Figure 1 Schematic diagram of the side view of the center coupling base.

[0019] Figure 3 Schematic diagram of the structure of adjusting the tool holder in the embodiment.

[0020] Figure 4 for Figure 3 Schematic diagram of the side view of the center coupling base.

[0021] Figure 5 Schematic diagram of the structure of adjusting the tool holder in the embodiment.

[0022] Figure 6 for Figure 5 Schematic diagram of the side view of the center coupling base. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments.

[0024] It should be noted that the terms "upper", "lower", "front", "back", "inside", "outside" and the like indicating directions or positional relationships are based on the drawings and are for the convenience of description only.

[0025] Example

[0026] like Figure 1-2As shown, a combined multi-aperture boring tool tool comprises a spindle 1 of a boring machine, a boring tool 2 and a tool holder assembly 3, wherein the tool holder assembly comprises a coupling base 31, an adjusting tool holder 32 and a mounting tool seat 33, wherein the coupling base is a long strip block structure arranged perpendicular to the spindle direction, a long groove 311 is provided in the center of the front side of the coupling base along its length direction for clamping the adjusting tool holder, a central through hole 312 is provided in the middle of the bottom of the long groove for passing the connecting screws between the coupling base and the spindle.

[0027] like Figure 3-4 As shown, the adjustable tool holder is a T-shaped block that can be embedded in the long slot connected to the base for adjustment and displacement. A boss 321 is fixedly provided on the front side of the adjustable tool holder in the center along the extension direction of the long slot. Positioning through holes 322 are provided at both ends of the boss. Two groups of adjusting screw holes 313 corresponding to the two positioning through holes are provided at the bottom of the long slot. The two positioning through holes can be combined and connected with each group of adjusting screw holes in turn through adjusting screws, thereby realizing the displacement adjustment of the adjustable tool holder.

[0028] like Figure 5-6 As shown, the tool mounting seat is an I-shaped block that can slide and shift on the boss of the adjusting tool holder, a slide groove 331 is provided in the center of the extension direction of the boss on the rear side of the tool mounting seat, which is used to cooperate with riding on the boss, a top screw through hole 332 is provided on the side wall of the slide groove, and the slide groove and the boss are connected by a top screw locking and positioning combination, a boring tool slot 333 is provided on the front side of the tool mounting seat, which is used to cooperate with the boring tool, and mounting screw holes 334 are provided on the two side walls of the tool mounting seat, which are used to pass the mounting screws to further tighten the boring tool.

[0029] An eccentric through hole 314 is also penetrated in the long groove on one side of the central through hole, and the coupling base can also be connected to the main shaft through the eccentric through hole through a connecting screw. In this case, it is an eccentric installation, and the rotation radius of the end of the coupling base away from the eccentric through hole is longer, which can further extend the extension length of the coupling base, thereby maximizing the reach of the boring cutter blade, which is suitable for internal hole processing with larger apertures.

[0030] A counterweight mounting hole 315 is also provided at one end of the coupling base near the eccentric through hole, which is used to connect and install a counterweight block (not shown in the figure) to offset the eccentric force of the rotation when the coupling base is eccentrically installed. When the main shaft rotates, due to the eccentric installation, the rotational centrifugal force at both ends of the connecting base is unequal, which will cause the main shaft to vibrate greatly and may even cause damage to the main shaft of the boring machine.

[0031] Positioning holes 316 are provided on the sides of the central through hole and the eccentric through hole, and a positioning pin (not shown in the figure) is provided at the front end of the main shaft to cooperate with the positioning pin on the main shaft to achieve the guidance and positioning of the coupling base and ensure the synchronization of the rotation of the wheel axle base with the main shaft.

[0032] The two side walls of the boss of the adjusting tool holder are provided with external toothed surfaces 323 along its length direction, and the two inner side walls of the slide groove of the mounting tool holder are provided with internal toothed surfaces 335 which are meshed and plugged with the external toothed surfaces, so as to better position the mounting tool holder in the tightening and locking position.

[0033] The central through hole, eccentric through hole and positioning through hole are all countersunk screw holes. Accordingly, the connecting screws and the adjusting screw holes are located in the countersunk screw holes when they are locked, so as to ensure the flatness of the long groove surface of the coupling base and the boss surface of the adjusting tool holder when the adjusting tool holder and the coupling base and the mounting tool holder and the adjusting tool holder are combined and connected, which is conducive to the sliding adjustment of the adjusting tool holder and the mounting tool holder.

[0034] The boring tool comprises a shank 21 and a tool 22. The shank of the boring tool is provided with a mounting through hole corresponding to the mounting screw hole. The shank of the boring tool is fixedly connected to the mounting seat by mounting screws. The tool is mounted on the outer end of the shank.

[0035] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the protection scope of the present invention.

Claims

1. A combined multi-aperture boring tool tool, comprising a spindle of a boring machine, a boring tool and a tool holder assembly, characterized in that: The tool holder assembly includes a coupling base, an adjusting tool holder and a mounting tool seat, the coupling base is a long strip block structure arranged perpendicular to the main axis direction, a long slot is provided in the middle of the front side of the coupling base along its length direction for clamping the adjusting tool holder, a central through hole is provided in the middle of the bottom of the long slot for passing the connecting screw between the coupling base and the main axis; the adjusting tool holder is a T-shaped block that can be embedded in the long slot of the connecting base for adjusting displacement, a boss is fixed in the middle of the front side of the adjusting tool holder along the extension direction of the long slot, positioning through holes are provided at both ends of the boss, and at least two groups of positioning through holes are provided at the bottom of the long slot for matching The two positioning through holes correspond to adjustment screw holes, and the two positioning through holes can be combined and connected with each group of adjustment screw holes in sequence through adjusting screws; the mounting tool seat is an I-shaped square block that can slide and shift on the boss of the adjusting tool holder, and a slide groove is provided in the center of the extension direction of the boss on the rear side of the mounting tool seat, which is used to cooperate with riding on the boss, and a top screw through hole is provided on the side wall of the slide groove, and the slide groove and the boss are connected by a top screw combination, and a boring tool slot is provided on the front side of the mounting tool seat for cooperating with the clamping of the boring tool, and mounting screw holes are provided on the two side walls of the mounting tool seat for passing the mounting screws to fasten the boring tool.

2. The combined multi-aperture boring tool tool according to claim 1, characterized in that: An eccentric through hole is also provided in the long groove on one side of the central through hole, and the coupling base can also be connected to the main shaft through a connecting screw provided through the eccentric through hole.

3. The combined multi-aperture boring tool tool according to claim 2, characterized in that: A counterweight installation hole is also provided at one end of the coupling base close to the eccentric through hole, which is used for connecting and installing a counterweight block to offset the eccentric force of rotation when the coupling base is eccentrically installed.

4. The combined multi-aperture boring tool tool according to claim 3, characterized in that: Positioning holes are provided on the sides of the central through hole and the eccentric through hole, and a positioning pin is provided at the front end of the main shaft.

5. The combined multi-aperture boring tool tool according to claim 1, characterized in that: External toothed surfaces are provided on both side walls of the boss of the adjusting tool holder along its length direction, and internal toothed surfaces meshing and plugging with the external toothed surfaces are provided on both inner side walls of the slide groove of the mounting tool holder.

6. The combined multi-aperture boring tool tool according to any one of claims 2 to 4, characterized in that: The central through hole, the eccentric through hole and the positioning through hole are all countersunk screw holes.

7. The combined multi-aperture boring tool tool according to claim 1, characterized in that: The boring tool comprises a shank and a tool. The shank of the boring tool is provided with a mounting through hole corresponding to the mounting screw hole. The shank of the boring tool is fixedly connected to the mounting seat by mounting screws. The tool is mounted on the outer end of the shank.

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