Automatic tapping machine for nuts

Abstract

The utility model discloses an automatic tapping machine for nuts, which comprises a feeding mechanism, a rotary chuck mechanism and a telescopic tapping machine which are sequentially arranged to form continuous production equipment, the feeding mechanism is used for conveying materials to the rotary chuck mechanism, and the rotary chuck mechanism is matched with the telescopic tapping machine. The purposes of automatic clamping and automatic tapping are achieved, and continuous production can be achieved; compared with existing equipment, the tapping precision and the operation efficiency are both considered, the overall structure is simple, the production cost is low, and the universality is high.

Description

Technical Field

[0001] The utility model belongs to the field of nut tapping equipment, in particular to an automatic tapping machine for nuts. Background Art

[0002] like Figure 1 As shown in the figure, in the fastener industry, the tapping process of hexagonal flange nut 1 mostly adopts traditional bent handle through-type tapping machine. Bent handle through-type tapping machine is a kind of efficient mechanical processing equipment, which is mainly used for thread processing. Its working principle is mainly to control the axial movement of the tapping head through the feeding mechanism to realize the tapping feed. However, there are certain defects in the structure of this type of equipment. The radial runout is large during the tapping process, and it is only suitable for parts with low verticality requirements. For parts with high verticality requirements, only reciprocating tapping machines can be used. Reciprocating tapping machines can ensure the tapping accuracy of nuts, but the working efficiency is low.

[0003] Therefore, the existing tapping equipment has the problem of not being able to balance precision and efficiency. Utility Model Content

[0004] The utility model provides an automatic tapping machine for nuts, aiming at developing a nut tapping machine with both precision and efficiency.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: an automatic tapping machine for nuts, characterized in that: it includes a feeding mechanism, a rotary chuck mechanism, and a telescopic tapping machine which are arranged in sequence to form a continuous production equipment, the feeding mechanism is used to transport the material to the rotary chuck mechanism, the rotary chuck mechanism is used to clamp or loosen the material, and the tap in the telescopic tapping machine is used to perform tapping operations on the material in the clamped state.

[0006] The above technical solution is further limited in that the feeding mechanism is mainly composed of a vibration plate, a slideway, a material positioning seat, a pushing rod and a pushing cylinder.

[0007] The above technical solution is further limited. The structure of the rotary chuck mechanism includes a hollow rotary cylinder, a chuck sleeve, a chuck and a driving device. The chuck sleeve is located in the feeding end of the piston rod of the hollow rotary cylinder. The chuck sleeve and the piston rod are conical sliding fits. The chuck is fixed in the chuck sleeve. The chuck is used to clamp or loosen the material. The driving device is used to drive the hollow rotary cylinder to rotate.

[0008] The above technical solution is further limited. The structure of the driving device includes a spindle seat, a rotating spindle, a guide sleeve, and a driving mechanism. The spindle seat is used to support the rotating spindle. The guide sleeve is fixed in the central cavity of the rotating spindle. The driving mechanism is used to drive the rotating spindle. The guide sleeve can rotate around the same axis with the rotating spindle. The rotating spindle is fixedly connected to the shell of the hollow rotary cylinder. The feed end of the guide sleeve extends into the discharge end of the piston rod of the hollow rotary cylinder. The guide sleeve and the piston rod are in a sliding fit, and the guide sleeve and the chuck sleeve are fixedly connected.

[0009] The above technical solution is further limited. The structure of the telescopic tapping machine includes a tap, a slide rail assembly, a limit baffle and a tension spring. The tapping part of the tap is concentrically arranged in the rotary chuck mechanism. The bent handle of the tap is limitedly cooperated with the limit baffle. The limit baffle can push the tap to move axially in the rotary chuck mechanism through the slide rail assembly. One end of the tension spring is connected to the limit baffle, and the other end of the tension spring is connected to the driving device. The tapping part of the tap is pressed against the material by the elastic force of the tension spring.

[0010] Beneficial effects: The rotary chuck mechanism in the utility model cooperates with the telescopic tapping machine to achieve the purpose of automatic clamping first and then automatic tapping, and can produce continuously; compared with existing equipment, the utility model takes into account both tapping accuracy and operating efficiency, has a simple overall structure, low production cost and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram in the background technology.

[0012] Figure 2 It is a schematic diagram of the structure of the utility model.

[0013] Figure 3 yes Figure 2 Schematic diagram of the rotary chuck mechanism.

[0014] Figure 4 yes Figure 3 sectional view of .

[0015] Figure 5 This is the relationship diagram between the hollow rotary cylinder and the guide sleeve. DETAILED DESCRIPTION

[0016] like Figure 2 As shown, an automatic tapping machine for nuts comprises a feeding mechanism 2, a rotary chuck mechanism 3, and a telescopic tapping machine 4 which are sequentially arranged to form a continuous production device, wherein the feeding mechanism is used to convey the material to the rotary chuck mechanism, the rotary chuck mechanism is used to clamp or loosen the material, and the tap in the telescopic tapping machine is used to perform tapping operation on the material in the clamped state;

[0017] like Figure 2As shown, the feeding mechanism 2 is mainly composed of a vibration plate 201, a slideway 202, a push rod 203 and a push cylinder 204; the feeding mechanism is relatively common in the art, so the connection relationship between the parts is not described in detail;

[0018] like Figure 3 and Figure 4 As shown, the structure of the rotary chuck mechanism 3 includes a hollow rotary oil cylinder 301, a chuck sleeve 302, a chuck 303 and a driving device. The chuck sleeve is located in the feeding end of the piston rod 3011 of the hollow rotary oil cylinder. The chuck sleeve and the piston rod are in a conical sliding fit. The chuck is fixed in the chuck sleeve. The chuck is used to clamp or loosen the material. The driving device is used to drive the hollow rotary oil cylinder to rotate. The conical sliding fit structure can ensure the concentricity between the parts and can also be used to imprison the material. The automated structure is conducive to improving efficiency and ensuring tapping accuracy. The overall structure is simple, the production cost is low, and the versatility is strong.

[0019] like Figure 3 and Figure 4 As shown, the structure of the driving device includes a spindle seat 304, a rotating spindle 305, a guide sleeve 306, and a driving mechanism. The spindle seat is used to support the rotating spindle. The guide sleeve is fixed in the central cavity of the rotating spindle by interference fit. The driving mechanism is used to drive the rotating spindle. The guide sleeve can rotate with the rotating spindle around the same axis. The rotating spindle is fixedly connected to the shell of the hollow rotary cylinder. The feed end of the guide sleeve extends into the discharge end of the piston rod of the hollow rotary cylinder. The guide sleeve and the piston rod are slidingly matched, and the discharge end of the guide sleeve and the chuck sleeve are fixedly connected. The guide sleeve and the chuck are concentrically arranged, and the inner diameters of the two are the same. The guide sleeve is a hollow tube, and the cross-sectional shape of the inner cavity of the guide sleeve matches the shape of the material. The guide sleeve can ensure the concentricity between the parts, thereby ensuring the tapping accuracy. The use of an automated structure is conducive to improving efficiency. The overall structure is simple, the production cost is low, and the versatility is strong.

[0020] like Figure 3 and Figure 4 As shown, the structure of the driving mechanism includes a servo motor 307, a transmission wheel 308 and a transmission belt 309, wherein the transmission wheel is fixed on the rotating main shaft, and the transmission wheel is connected to the driving end of the servo motor through the transmission belt; the driving mechanism is relatively common in the art, and therefore, the connection relationship between the parts is not described in detail;

[0021] like Figure 3 and Figure 4As shown, the structure of the telescopic tapping machine 4 includes a tap 401, a slide rail assembly 402, a limit baffle 403 and a tension spring 404. The tapping portion of the tap extends from the discharge end of the guide sleeve into the rotary chuck mechanism. The tapping portion of the tap is concentrically arranged with the chuck sleeve. The bent handle of the tap is limitedly matched with the limit baffle. The limit baffle can push the tap to move axially in the rotary chuck mechanism through the slide rail assembly. One end of the tension spring is connected to the limit baffle, and the other end of the tension spring is connected to the spindle seat in the drive device. The tapping part of the tap is pressed against the material by the elastic force of the tension spring; the limit baffle is an angle steel; the slide rail assembly is composed of a dovetail guide rail and a slider, the slider is slidably connected to the guide rail, and the slider is fixedly connected to the limit baffle; the advantages of this structure are: the limit baffle plays the role of positioning, blocking the material and preventing the tap from rotating; the limit baffle cooperates with the tension spring to give the tap an axial floating force, so that the tapping stroke of the tap can be adjusted automatically, which is beneficial to improving efficiency; the overall structure is simple, the production cost is low, and the versatility is strong;

[0022] like Figure 5 As shown, a limit key 3012 is provided on the inner wall of the piston rod of the hollow rotary oil cylinder, and a limit key groove 3013 is provided on the outer circumferential surface of the guide sleeve of the driving device. The limit key and the limit key groove cooperate to control the axial stroke of the piston rod and to protect the connection between the chuck sleeve and the guide sleeve;

[0023] The spindle seat and the dovetail guide rail can be fixed on the table surface of the bed.

[0024] The working principle of the utility model is as follows: before operation, the tapping part of the tap is firstly arranged concentrically with the chuck sleeve through the nut after tapping. Figure 4 and Figure 5 As shown. Figure 2 As shown, the material 5 is a hexagonal flange nut without tapping. After the material is oriented and sorted in the vibration plate, it automatically falls along the slideway into the end positioning seat. The push cylinder drives the push rod to accurately push the material in the positioning seat into the clamping mechanism; the chuck is composed of four petals, and the chuck is fixed in the chuck sleeve slot by screws. The outer circle of the chuck sleeve is a cone. When the piston rod of the hollow rotary oil cylinder is extended, the chuck sleeve and the chuck are tightened through the cone surface, so that the material can be clamped; at the same time, the tapping part of the tap rests on the orifice of the nut through the elastic force of the tension spring. Start the servo motor, the rotating spindle, the hollow rotary oil cylinder, the chuck sleeve, the chuck and the material in the clamping state can rotate around the same axis, and then the tension of the tension spring is used to realize the feeding of the tapping part and complete the tapping; after tapping, the piston rod of the hollow rotary oil cylinder retracts, loosens the tapped material, and waits for the next material to be clamped. The tapped workpiece moves orderly on the tap to the bent handle of the tap, and can be discharged from the bent handle of the tap by the thrust and deadweight of the subsequent workpiece.

Claims

1. An automatic tapping machine for nuts, characterized in that: The invention comprises a continuous production device which is composed of a feeding mechanism, a rotary chuck mechanism and a telescopic tapping machine which are arranged in sequence. The feeding mechanism is used to convey materials to the rotary chuck mechanism, the rotary chuck mechanism is used to clamp or release the materials, and the tap in the telescopic tapping machine is used to perform tapping operations on the materials in the clamped state.

2. The automatic tapping machine for nuts according to claim 1, characterized in that: The feeding mechanism is mainly composed of a vibrating plate, a slideway, a pushing rod and a pushing cylinder.

3. An automatic tapping machine for nuts according to claim 1 or 2, characterized in that: The structure of the rotary chuck mechanism includes a hollow rotary cylinder, a chuck sleeve, a chuck and a driving device. The chuck sleeve is located in the feeding end of the piston rod of the hollow rotary cylinder. The chuck sleeve and the piston rod are in a conical sliding fit. The chuck is fixed in the chuck sleeve. The chuck is used to clamp or loosen the material. The driving device is used to drive the hollow rotary cylinder to rotate.

4. The automatic tapping machine for nuts according to claim 3, characterized in that: The structure of the telescopic tapping machine includes a tap, a slide rail assembly, a limit baffle and a tension spring. The tapping part of the tap is concentrically arranged in the rotary chuck mechanism. The bent handle of the tap is limitedly matched with the limit baffle. The limit baffle can push the tap to move axially in the rotary chuck mechanism through the slide rail assembly. One end of the tension spring is connected to the limit baffle, and the other end of the tension spring is connected to the driving device. The tapping part of the tap is pressed against the material by the elastic force of the tension spring.

5. The automatic tapping machine for nuts according to claim 3, characterized in that: The structure of the driving device includes a spindle seat, a rotating spindle, a guide sleeve, and a driving mechanism. The spindle seat is used to support the rotating spindle, the guide sleeve is fixed in the central cavity of the rotating spindle, the driving mechanism is used to drive the rotating spindle, and the guide sleeve can rotate around the same axis with the rotating spindle; the rotating spindle is fixedly connected to the shell of the hollow rotary cylinder; the feed end of the guide sleeve extends into the discharge end of the piston rod of the hollow rotary cylinder, the guide sleeve and the piston rod are in a sliding fit, and the guide sleeve and the chuck sleeve are fixedly connected.

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