CN206036050U - Shaft coupling and positioning and punching device thereof - Google Patents

Abstract

The utility model relates to a shaft coupling and its positioning and drilling device, belonging to the technical field of motor accessories; the technical problem to be solved is to provide a coupling and its positioning and drilling device, which has a simple structure, is convenient to use, and has high machining accuracy; The technical solution adopted is: a coupling, the axial through hole in the center of the coupling is a through hole on the conical surface, and the circumference of the end face of the coupling with a small diameter of the through hole on the conical surface is provided with multiple threaded holes. The positioning and punching device includes a base, a positioning screw, a hole die, a pressure plate, a tool holder and a hole drill. The positioning screw is absolutely vertically fixed on the base, and the hole die and the pressure plate are fixed on the bottom of the positioning screw through threads. Above, the hole mold is in the shape of a conical surface and its outer peripheral surface is fully matched with the through hole of the conical surface of the coupling. The diameter of the pressure plate is larger than the diameter of the upper end of the through hole of the conical surface of the coupling. There are a plurality of hole drills corresponding to a plurality of threaded holes to be machined on the coupling.

Description

A shaft coupling and its positioning and punching device

technical field

The utility model relates to a shaft coupling and a positioning and punching device thereof, belonging to the technical field of motor accessories.

Background technique

The main function of the coupling is to realize the connection between the motor shaft and the load. The connection between the shaft and the coupling is an interference connection, which needs to work more reliably under shock and vibration loads. Therefore, it requires high centering accuracy and load capacity. very high.

Utility model content

The utility model overcomes the deficiencies in the prior art, and the technical problem to be solved is to provide a shaft coupling and a positioning and drilling device thereof, which has a simple structure, is convenient to use, and has high processing precision.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a coupling, the axial through hole in the center of the coupling is a through hole on the conical surface and it is an interference connection with the rotating shaft. A plurality of threaded holes are provided on the circumference of the end face of the coupling with a smaller hole diameter.

The upper and lower ends of the tapered through hole are provided with arc transitions.

The positioning and drilling device of the coupling includes a base, a positioning screw, a hole die, a pressure plate, a tool holder and a hole drill. The positioning screw is absolutely vertically fixed on the base. The lower part of the positioning screw is threaded and the upper part is a smooth round rod. Both the hole die and the pressure plate are fixedly installed on the bottom of the positioning screw through threads, the pressure plate is located above the hole die, the hole die is in the shape of a truncated cone and its outer peripheral surface is fully matched with the through hole on the conical surface of the coupling, the The diameter of the pressure plate is larger than the diameter of the upper end of the through hole on the conical surface of the coupling. A tool holder is installed above the base and a plurality of hole drills are arranged on the circumference of the lower end of the tool holder. Corresponding.

The center of the lower end of the tool holder is provided with a positioning hole, and the smooth round rod on the upper part of the positioning screw is correspondingly fitted in the positioning hole.

The hole drills are all fixedly installed under the tool holder by dismounting parts.

Compared with the prior art, the utility model has the beneficial effects that: the main function of the coupling is to realize the connection between the motor shaft and the load, and the connection between the shaft and the coupling is a conical surface interference connection. To achieve the connection, the conical surface interference connection is to use the relative axial displacement of the containing part and the contained part to obtain an interference fit. This connection structure is simple, the centering accuracy is good, and it can withstand torque, axial force or both. It can work more reliably even under shock and vibration loads; corresponding to the positioning and drilling device of the coupling, multiple threaded holes on the end face of the coupling can be completed at one time, with high machining accuracy ,Good quality.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a structural schematic diagram of the coupling of the utility model.

Fig. 2 is a structural schematic diagram of the positioning and punching device of the present invention.

Fig. 3 is a schematic diagram of the punching working state of the utility model.

In the figure: 1 is the base, 2 is the positioning screw, 3 is the hole die, 4 is the pressure plate, 5 is the tool holder, 6 is the hole drill, 7 is the positioning hole, and 8 is the disassembly part.

detailed description

As shown in Figure 1, the utility model is a coupling. The axial through hole in the center of the coupling is a conical through hole and it is an interference connection with the rotating shaft. The coupling with a small diameter of the conical through hole There are multiple threaded holes on the circumference of the section end face.

The upper and lower ends of the tapered through hole are provided with arc transitions.

As shown in Figure 3, the positioning and punching device of the coupling of the utility model includes a base 1, a positioning screw 2, a hole die 3, a pressing plate 4, a tool holder 5 and a hole drill 6, and the positioning screw 2 is absolutely vertically fixed on the base 1 On, the lower part of the positioning screw 2 is provided with threads and its upper part is a smooth round rod, the hole die 3 and the pressing plate 4 are all fixedly installed on the bottom of the positioning screw 2 by threads, the pressing plate 4 is located above the hole die 3, and the hole The mold 3 is in the shape of a conical surface and its outer peripheral surface is fully matched with the through hole of the conical surface of the coupling. The diameter of the pressure plate 4 is larger than the diameter of the upper end of the through hole of the conical surface of the coupling. A plurality of drill holes 6 are arranged on the circumference of the lower end, and the plurality of drill drills correspond to a plurality of threaded holes to be processed on the shaft coupling.

The center of the lower end of the tool holder 5 is provided with a positioning hole 7, and the smooth round rod on the upper part of the positioning screw 2 is correspondingly installed in the positioning hole 7. The tool holder 5 goes down along the positioning screw 2 until the coupling surface to be processed, and starts to guide positioning.

The hole drills 6 are all fixedly installed under the tool holder 5 through the dismounting parts 8 .

The height of the hole mold 3 is not greater than the height of the through hole on the conical surface of the coupling.

The method of using the positioning and drilling device of the coupling: as shown in Figure 3, the base 1, the positioning screw 2 and the tool holder 5 in the utility model are general-purpose for processing, and before drilling the coupling to be processed, first according to The through hole on the conical surface of the coupling is made into a hole mold 3 that is fully matched. The center of the hole mold 3 is provided with a threaded hole that matches the positioning screw 2. Select a suitable hole drill 6 and install it under the tool holder 5 through the disassembled part 8. The prepared hole mold 3 is fixedly installed on the base 1 through threaded connection, the coupling is placed on the hole mold 3, and the pressure plate 4 is tightened on the positioning screw 2 to make it tightly press the coupling. 3 is in the shape of a truncated cone, and its conical surface contacts with the through hole of the coupling conical surface to have a certain positioning effect after extrusion. With the pressing plate 4, the coupling can be tightly fixed on the base 1, and the hole on the tool holder 5 can be activated. Drill 6 rotates at high speed, and control tool holder 5 to move downwards, just can realize to coupling high-precision drilling, and the positioning hole 7 in the upper center of tool holder 5 cooperates with the smooth round rod on the top of positioning screw rod 2, and can further realize positioning guidance.

The above embodiments of the utility model have been described in detail in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (5)

1. A shaft coupling, characterized in that: the axial through hole in the center of the coupling is a conical through hole and it is an interference connection with the rotating shaft, and the circumference of the coupling end face with a smaller diameter of the conical through hole Features multiple threaded holes. 2. A shaft coupling according to claim 1, characterized in that: the upper and lower ends of the tapered through hole are provided with arc transitions. 3. The positioning and punching device of the coupling according to claim 1, characterized in that it includes a base (1), a positioning screw (2), a hole die (3), a pressure plate (4), and a tool holder (5) And the hole drill (6), the positioning screw (2) is absolutely vertically fixed on the base (1), the lower part of the positioning screw (2) is provided with threads and its upper part is a smooth round rod, the hole die (3) and the pressure plate ( 4) are fixed on the bottom of the positioning screw (2) by thread, the pressure plate (4) is located on the hole die (3), the hole die (3) is in the shape of a truncated cone and its outer peripheral surface is in line with the cone of the coupling The surface through hole is completely matched, the diameter of the pressure plate (4) is larger than the diameter of the upper end of the conical surface through hole of the coupling, the tool holder (5) is installed above the base (1), and the lower end of the tool holder is provided with a plurality of drill holes (6 ), the multiple hole drills (6) correspond to the multiple threaded holes to be processed on the coupling. 4. The positioning and punching device of the coupling according to claim 3, characterized in that: the center of the lower end of the tool holder (5) is provided with a positioning hole (7), and the upper part of the positioning screw (2) is a smooth round rod correspondingly matched Installed in the positioning hole (7). 5. The positioning and drilling device for coupling according to claim 3 or 4, characterized in that: the drills (6) are all fixedly installed under the tool holder (5) by dismounting parts (8).