Special machining tool for composite center hole

Abstract

The utility model relates to the technical field of machining, in particular to a special machining tool for a composite center hole, which comprises a taper shank, one end of the taper shank, which is conical and used for being connected with an external lathe tailstock, is a tail end, the head end of the taper shank is provided with two mounting plates, and one ends of the mounting plates, which are far away from the taper shank, are jointly provided with a rotating shaft. An annular mounting seat is mounted on a rod body, positioned between the mounting plates, of the rotating shaft; according to the utility model, under the mutual cooperation of all parts, when a worker replaces center hole drills with different angles, the worker only needs to pull the limiting rod by hand, that is, compared with the traditional scheme, the step that the worker can replace the center hole drills after operating the tailstock is omitted, and the labor intensity of the worker is reduced. According to the scheme, when the center hole drill is used, a worker can replace the center hole drill more quickly, and meanwhile in the process, the phenomenon that the center hole drill falls off from a lathe accidentally when the worker replaces the center hole drill is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a special machining tool for composite center holes. Background Art

[0002] In the field of machining, it is necessary to machine center holes to keep the workpiece stable during the machining process. When a traditional ordinary lathe is used to machine center holes, the drill bit used is not easily detachable from the taper shank. That is, when machining center holes at multiple angles, the operator needs to frequently disassemble and assemble the drill bit, resulting in high labor intensity and low machining efficiency. Therefore, in order to solve the above technical problems, we propose a special machining tool for composite center holes. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a special machining tool for composite center holes to solve the shortcomings existing in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The special machining tool for composite center holes includes a taper shank. The end of the taper shank that is tapered and used to connect with the tailstock of the external lathe is the tail end. Two mounting plates are provided at the head end of the taper shank. A rotating shaft is commonly mounted at the ends of the mounting plates away from the taper shank. An annular mounting seat is mounted on the rod body of the rotating shaft between the mounting plates. Different types of center hole drills are arranged on the outer circumferential surface of the mounting seat. One end of the rotating shaft extends to the outside of the mounting plate and is mounted with a mounting frame. The ends of the mounting frame correspond to the center hole drills and are slidably provided with limiting rods. Corresponding insertion holes are provided on the outer surface of the mounting plate for the limiting rods. The ends of the limiting rods away from the mounting plate are commonly provided with a linkage assembly.

[0006] Further, the linkage assembly includes a linkage ring, an elastic cord and a limiting strip. The two ends of the limiting strip are fixedly connected to the mounting frame. The middle part of the limiting strip is inserted into the inner side of the limiting rod. The elastic cord is located inside the limiting rod and its two ends are respectively connected to the limiting strip and the end of the limiting rod away from the mounting plate. The linkage ring is connected to the ends of the limiting rods away from the mounting plate.

[0007] Further, the outer circumferential surface of the linkage ring is a frosted surface, and the outer circumferential surface of the limiting rod is a smooth surface.

[0008] Further, the end of the limiting rod close to the mounting plate is arc-shaped, and the inner wall of the insertion hole is a smooth surface.

[0009] Further, an external thread is provided at the end of the center hole drill away from the drill bit, and the center hole drill is connected to the mounting seat through the external thread.

[0010] Furthermore, a thread is provided at one end of the rotating shaft away from the mounting frame, and the rotating shaft is connected to a counterweight block via the thread.

[0011] Furthermore, a plurality of bolts are provided at the head end of the cone handle, and the mounting plate is connected to the cone handle via the bolts.

[0012] The composite center hole special processing tool proposed by the utility model has the following beneficial effects:

[0013] In the utility model, the personnel pulls the linkage ring by hand, so that the linkage ring drives the end parts of each limit rod to disengage from the socket of the mounting plate, that is, at this time the rotating shaft is in a free rotation state, and then the personnel's hand rotates at the same time to control the rotation of the rotating shaft until the required center hole drill and the tapered handle are on the same axis. In summary, during the use of this scheme, with the mutual cooperation of various components, when replacing the center hole drills of different angles, the personnel only needs to pull the limit rod by hand, that is, compared with the traditional scheme, the step of the personnel operating the tailstock before replacing the center hole drill is saved, that is, when using the present scheme, the personnel can replace the center hole drill more quickly, and at the same time in this process, it also avoids the phenomenon that the center hole drill accidentally falls off the lathe when the personnel replaces the center hole drill.

[0014] The arrangement of the linkage assembly in the utility model enables the personnel to pull multiple limit rods at the same time when pulling the linkage ring, thereby enabling the personnel to operate the limit rods more conveniently. Subsequently, under the arrangement of the elastic rope, after the personnel cancel the force applied to the linkage ring, the elastic rope pulls the limit rod automatically close to the mounting plate, which is convenient for constraining the limit rod to ensure that the end of the limit rod is inserted into the socket of the mounting plate, thereby achieving a limiting and fixing effect on the rotating shaft; since the center hole drill and the mounting seat are connected by a thread, that is, during the use of the present solution, when a center hole drill is damaged at a certain place, the personnel can replace it in time, which is convenient for repair; the arrangement of the counterweight block facilitates the balancing of the mounting plate, thereby making the entire device more stable when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a one-view perspective of a special processing tool for a composite center hole proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of another viewing angle of the special processing tool for composite center hole proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the coordination between the limit rod and the mounting frame of the special composite center hole processing tool proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the cooperation between the limit rod and the mounting plate of the special processing tool for the composite center hole proposed by the utility model;

[0019] Figure 5 Schematic diagram of the taper shank of the special processing tool for the composite center hole proposed by the present utility model;

[0020] Figure 6 Schematic diagram of the disassembly of the center hole drill and the mounting seat of the special processing tool for the composite center hole proposed by the present utility model. Detailed implementation manners

[0021] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] Referring to Figure 1-6 , the special processing tool for the composite center hole includes a taper shank 1. One end of the taper shank 1 that is tapered and used to connect with the external lathe tailstock is the tail end. Two mounting plates 2 are provided at the head end of the taper shank 1. A rotating shaft 3 is commonly installed at the ends of the mounting plates 2 away from the taper shank 1. An annular mounting seat 4 is installed on the rod body of the rotating shaft 3 between the mounting plates 2. Different types of center hole drills 5 are provided on the circumferential surface of the outer ring of the mounting seat 4. One end of the rotating shaft 3 extends to the outside of the mounting plate 2 and is installed with a mounting frame 6. Limiting rods 7 are slidably provided at the ends of the mounting frame 6 corresponding to the center hole drills 5. Corresponding insertion holes are provided on the outer surface of the mounting plate 2 for the limiting rods 7. A linkage assembly is provided at the ends of the limiting rods 7 away from the mounting plate 2.

[0023] Further, referring to Figure 1-6 , in the case where other parts are the same as the above solution, the linkage assembly includes a linkage ring 8, an elastic cord 9, and a limiting strip 10. Both ends of the limiting strip 10 are fixedly connected to the mounting frame 6. The middle part of the limiting strip 10 is inserted into the inner side of the limiting rod 7. The elastic cord 9 is located inside the limiting rod 7 and its two ends are respectively connected to the limiting strip 10 and the end of the limiting rod 7 away from the mounting plate 2. The linkage ring 8 is connected to the ends of the limiting rods 7 away from the mounting plate 2. The outer ring surface of the linkage ring 8 is a frosted surface, and the outer ring surface of the limiting rod 7 is a smooth surface. The setting of the linkage assembly enables personnel to pull multiple limiting rods 7 simultaneously when pulling the linkage ring 8, so that personnel can more conveniently control the limiting rods 7. Subsequently, under the setting of the elastic cord 9, after personnel cancel the force applied to the linkage ring 8, the elastic cord 9 pulls the limiting rods 7 to automatically approach the mounting plate 2, that is, it is convenient to restrain the limiting rods 7 to ensure that the ends of the limiting rods 7 are inserted into the insertion holes of the mounting plate 2, thereby playing a role in limiting and fixing the rotating shaft 3.

[0024] One end of the limit rod 7 close to the mounting plate 2 is arc-shaped, the inner wall of the jack is a smooth surface, and the end of the center hole drill 5 away from the drill bit is provided with an external thread. The center hole drill 5 is connected to the mounting seat 4 through the external thread. Since the center hole drill 5 and the mounting seat 4 are connected by a thread, during the use of this solution, when a certain center hole drill 5 is damaged, the personnel can replace it in time, which is convenient for its maintenance; the end of the rotating shaft 3 away from the mounting bracket 6 is provided with a thread, and the rotating shaft 3 is connected with a counterweight 11 through the thread. The setting of the counterweight 11 is convenient for leveling the mounting plate 2, so that the whole device is more stable during use; the head end of the taper shank 1 is provided with a number of bolts 12, and the mounting plate 2 is connected to the taper shank 1 through the bolts 12. The setting of the bolts 12 facilitates the installation and disassembly of the mounting plate 2, so that the processing tool proposed in this solution has a modular effect, that is, when a certain component is damaged, only the damaged component needs to be replaced, thus effectively improving the resource utilization rate.

[0025] Principle and advantages of use: During the use of the present invention, the processing tool is installed on the tailstock of an external lathe through the taper shank 1. Then, when it is necessary to process a center hole for an external workpiece, the personnel pull the linkage ring 8 by hand, so that the linkage ring 8 drives the ends of the limit rods 7 to disengage from the jacks of the mounting plate 2. At this time, the rotating shaft 3 is in a free rotation state. Then, the personnel rotate the rotating shaft 3 by hand control at the same time until the required center hole drill 5 and the taper shank 1 are on the same axis, and the drill bit of the required center hole drill 5 is away from the tail end of the taper shank 1. At this time, the personnel can push the taper shank 1 forward by operating the external tailstock, that is, the taper shank 1 pushes this center hole drill 5 towards the workpiece until the center hole of the workpiece is processed. Therefore, when the processing tool proposed in this solution is used, the personnel only need to apply force to the linkage ring 8, so that the limit rod 7 is separated from or combined with the mounting plate 2, and then the connection relationship between the rotating shaft 3 and the mounting plate 2 can be changed, so as to rotate the mounting seat 4, that is, quickly replace the center hole drill 5 at different angles.

[0026] In summary, during the use of this solution, with the mutual cooperation of each component, when the personnel replace the center hole drill 5 at different angles, they only need to pull the limit rod 7 by hand. That is, compared with the traditional solution, the step of the personnel operating the tailstock to replace the center hole drill 5 is saved. That is, when this solution is used, the personnel can replace the center hole drill 5 more quickly. At the same time, during this process, the phenomenon that the center hole drill 5 accidentally falls off the lathe when the personnel replace the center hole drill 5 is also avoided.

[0027] It should be further noted that the setting of the linkage component enables a person to pull multiple limiting rods 7 simultaneously when pulling the linkage ring 8, thereby enabling the person to conveniently control the limiting rods 7. Subsequently, under the setting of the elastic cord 9, after the person cancels the force applied to the linkage ring 8, the elastic cord 9 pulls the limiting rods 7 to automatically approach the mounting plate 2, that is, it is convenient to constrain the limiting rods 7 to ensure that the ends of the limiting rods 7 are inserted into the jacks of the mounting plate 2, thereby achieving a limiting and fixing effect on the rotating shaft 3; since the center hole drill 5 and the mounting seat 4 are connected by threads, that is, during the use of this solution, when a certain center hole drill 5 is damaged, the person can replace it in time, that is, it is convenient to repair it; the setting of the counterweight 11 is convenient for leveling the mounting plate 2, thereby making the entire device more stable during use; the setting of the bolt 12 is convenient for installing and disassembling the mounting plate 2, thereby making the processing tool proposed in this solution have a modular effect, that is, when a certain component is damaged, directly replace the damaged component, thereby effectively improving the resource utilization rate.

[0028] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A special processing tool for compound center holes, including a taper shank (1), characterized in that, The conical shank (1) has a tail end which is conical and used to connect with the external lathe tailstock. At the head end of the conical shank (1), there are two mounting plates (2). At the end of the mounting plates (2) away from the conical shank (1), a rotating shaft (3) is commonly installed. An annular mounting seat (4) is installed on the rod body of the rotating shaft (3) between the mounting plates (2). Different types of center hole drills (5) are arranged on the circumferential surface of the outer ring of the mounting seat (4). One end of the rotating shaft (3) extends to the outside of the mounting plate (2) and is installed with a mounting frame (6). At each end of the mounting frame (6) corresponding to the center hole drill (5), a limiting rod (7) is slidably arranged. On the outer surface of the mounting plate (2), jacks matching the limiting rods (7) are arranged. At the end of the limiting rod (7) away from the mounting plate (2), a linkage assembly is commonly arranged.

2. The special processing tool for the composite center hole according to claim 1, wherein The linkage assembly includes a linkage ring (8), an elastic cord (9) and a limiting strip (10). Both ends of the limiting strip (10) are fixedly connected to the mounting frame (6). The middle part of the limiting strip (10) is inserted into the inside of the limiting rod (7). The elastic cord (9) is located inside the limiting rod (7) and its two ends are respectively connected to the limiting strip (10) and the end of the limiting rod (7) away from the mounting plate (2). The linkage ring (8) is connected to the end of each limiting rod (7) away from the mounting plate (2).

3. The special processing tool for the composite center hole according to claim 2, characterized in that, The outer ring surface of the linkage ring (8) is a frosted surface, and the outer ring surface of the limiting rod (7) is a smooth surface.

4. The special processing tool for composite center holes according to claim 1, wherein The end of the limiting rod (7) close to the mounting plate (2) is arc-shaped, and the inner wall of the jack is a smooth surface.

5. The special processing tool for composite center holes according to claim 1, characterized in that, At the end of the center hole drill (5) away from the drill bit, there is an external thread, and the center hole drill (5) is connected to the mounting seat (4) through the external thread.

6. The special processing tool for a composite center hole according to claim 1, characterized in that, At the end of the rotating shaft (3) away from the mounting frame (6), there is a thread, and the rotating shaft (3) is connected with a counterweight block (11) through the thread.

7. The special processing tool for a composite center hole according to claim 1, characterized in that, At the head end of the conical shank (1), there are several bolts (12), and the mounting plate (2) is connected to the conical shank (1) through the bolts (12).

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