Steel wire positioning structure in spring winding process

Abstract

The invention discloses a steel wire positioning structure in the spring winding process, a positioning hole is formed in a mandrel of a machine tool in a penetrating manner, the steel wire positioning structure comprises a positioning pin, the positioning pin is coaxially clamped in the positioning hole, the two ends of the positioning pin are located outside the positioning hole, and the two ends of the positioning pin are located outside the positioning hole. One end of the positioning pin is bent towards the direction close to the core shaft to form a bent part, and the bent part and the core shaft jointly define a bayonet. According to the steel wire positioning structure in the spring winding process, in the spring taking-down process, spring parts are not prone to deformation, meanwhile, the safety performance is improved, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of spring winding positioning, and more particularly to a steel wire positioning structure during the spring winding process. Background Art

[0002] Currently, in the process of winding springs using a lathe, the head end of the steel wire used to make the spring is directly passed through a positioning hole that passes through the core shaft so that one end of the steel wire is clamped in the positioning hole. The core shaft is then installed on the machine tool clamping jaws and driven to rotate. At the same time, the moving seat in the machine tool drives the steel wire raw material to move axially along the core shaft, so that a spring can be wound on the core shaft.

[0003] However, the current positioning method of clamping the wire end through the positioning hole on the core shaft requires that the spring be removed from the core shaft after the spring is wound. The process is as follows: first, the core shaft needs to be removed from the machine tool claws, and then the steel wire at the tail end of the spring needs to be cut with pliers to sever the connection between the spring and the steel wire raw material. Then, the core shaft with the spring is picked up, and the steel wire at the head end of the spring needs to be cut with pliers to sever the head end of the spring from the steel wire end clamped in the positioning hole. Finally, the spring is removed from the core shaft.

[0004] However, this positioning method of clamping the wire end through the positioning hole on the core shaft requires the core shaft to be removed from the machine tool claws before the wire at the tail end of the spring is cut with pliers. During the process of removing the core shaft, the spring wire has a large rebound force, which can easily cause the outer diameter of the spring to become larger. If the operation is improper, it may also cause the part to be scrapped, resulting in a low processing qualification rate of spring parts.

[0005] In addition, this positioning method of clamping the wire end through the positioning hole located on the core shaft, when using pliers to cut the wire at the first end of the spring to separate the first end of the spring from the wire end clamped in the positioning hole, the wire will rebound due to stress, and the operator may be injured if he is not careful, posing a safety hazard.

[0006] Therefore, how to provide a wire positioning structure in the spring winding process that is not easy to deform the spring parts during the process of removing the spring and at the same time improves the safety performance is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0007] In view of this, the present invention provides a steel wire positioning structure during the spring winding process, which is not easy to cause the spring parts to deform during the process of removing the spring, while improving the safety performance and being simple and convenient to operate.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A wire positioning structure for a spring winding process, wherein a positioning hole is passed through the core shaft of a machine tool, and comprises: a positioning pin, and the positioning pin is coaxially engaged in the positioning hole, while both ends of the positioning pin are located outside the positioning hole, and one end of the positioning pin is bent toward the core shaft to form a bent portion, and the bent portion and the core shaft jointly define a bayonet.

[0010] The present application adopts the above-mentioned technical solution. By inserting the head end of the steel wire used to make the spring into the bayonet, the present application adopts a positioning method. When the spring is wound and the spring is removed from the core shaft, the machine tool is reversed to automatically unload the force on the spring, so that the head end of the spring can be disengaged from the buckle. Therefore, this process is not likely to increase the outer diameter of the spring, so it is not likely to cause the spring parts to deform during the process of unloading the spring, thereby improving the qualified rate of the spring parts.

[0011] In addition, since the present application can automatically unload the spring by counter-hitting the machine tool, the head end of the spring can be disengaged from the buckle. When the steel wire at the tail end of the spring is cut with pliers to cut off the connection between the spring and the steel wire raw material, the core shaft can be removed from the clamping claws of the machine tool and the spring can be directly removed from the core shaft. At this time, no stress will be generated when the head end of the spring is sheared with pliers, thereby improving the safety performance of the operator.

[0012] Preferably, it also includes: a first nut, and the outer wall of the positioning pin away from the bending portion has a first threaded section, and the first threaded section is close to the core shaft, and the first nut is threadedly connected to the first threaded section and abuts against the core shaft.

[0013] The present application adopts the above technical solution and fastens the positioning pin by the first nut, so that during the spring winding process, the positioning pin is not easily rotated due to torque, thereby improving the stability of the present application in fixing the spring steel wire.

[0014] Preferably, it further includes: a second nut, and the portion of the locating pin close to the bending portion and located outside the locating hole has a second threaded section, and the second nut is threadedly connected to the second threaded section and abuts against the core shaft.

[0015] The present application adopts the above technical solution and tightens the positioning pin through the second nut, so that during the spring winding process, the positioning pin is not easily rotated due to torque, thereby improving the stability of the present application in fixing the spring steel wire.

[0016] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a wire positioning structure during the spring winding process, which can achieve the following technical effects:

[0017] 1. The present application adopts a positioning method in which the head end of the steel wire used to make the spring is inserted into the bayonet. When the spring is wound and removed from the core shaft, the machine tool is reversed to automatically unload the spring, thereby allowing the head end of the spring to disengage from the buckle. Therefore, this process is not likely to increase the outer diameter of the spring, so that the spring parts are not likely to be deformed during the unloading process of the spring, thereby improving the qualified rate of the spring parts.

[0018] 2. The present application can automatically unload the force on the spring by counter-hitting the machine tool, so that the head end of the spring can be disengaged from the buckle. After the steel wire at the tail end of the spring is cut with pliers to sever the connection between the spring and the steel wire raw material, the core shaft can be removed from the clamping claws of the machine tool and the spring can be directly removed from the core shaft. At this time, no stress will be generated when the head end of the spring is sheared with pliers, thereby improving the safety performance of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 It is a partial cross-sectional view of a machine tool for winding springs according to the present invention.

[0021] Figure 2 This is a cross-sectional view of a steel wire positioning structure connected to a machine tool during a spring winding process according to the present invention.

[0022] Among them, 101-machine tool; 102-core shaft; 100-positioning hole; 1-positioning pin; 10-bending portion; 2-bayonet; 3-first nut; 4-second nut; 5-spring. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] An embodiment of the present invention discloses a steel wire positioning structure for a spring winding process, wherein a positioning hole 100 is passed through a core shaft 102 of a machine tool 101, and the structure comprises: a positioning pin 1, and the positioning pin 1 is coaxially engaged in the positioning hole 100, while both ends of the positioning pin 1 are located outside the positioning hole 100, and one end of the positioning pin 1 is bent toward the direction close to the core shaft 102 to form a bending portion 10, and the bending portion 10 and the core shaft 102 jointly define a bayonet 2.

[0027] When the present application is in use, the head end of the steel wire used to make the spring 5 is inserted into the bayonet 2 so that the head end of the steel wire used to make the spring 5 is clamped between the bent portion 10 and the core shaft 102, so that the bent portion 10 and the core shaft 102 form a clamping force on the head end of the steel wire located in the bayonet 2, thereby fixing the head end of the steel wire used to make the spring 5;

[0028] After the mandrel 102 is mounted on the jaws of the machine tool 101, since the head end of the steel wire for making the spring 5 is positioned in the bayonet 2, the machine tool is started and made to run forward, thereby starting the process of winding the spring 5 (how to wind the spring 5 is a mature existing technology and will not be described in detail here);

[0029] After the winding of the spring 5 is completed, the machine tool 101 is reversed to automatically unload the spring 5, so that the head end of the spring 5 can be disengaged from the buckle 2. This process is not likely to increase the outer diameter of the spring 5. Therefore, it is not likely to cause the spring 5 parts to deform during the unloading process of the spring 5, thereby improving the qualified rate of the spring 5 parts.

[0030] After the head end of the spring 5 is released from the buckle 2, use pliers to cut the steel wire at the tail end of the spring 5 to cut off the connection between the spring 5 and the steel wire raw material, then remove the core shaft 102 from the claws of the machine tool 101, and then directly remove the spring 5 from the core shaft 102.

[0031] In order to further optimize the above technical solution, it also includes: a first nut 3, and the outer wall of the positioning pin 1 away from the bending portion 10 has a first threaded section, and the first threaded section is close to the core shaft 102, and the first nut 3 is threadedly connected to the first threaded section and abuts against the core shaft 102.

[0032] In order to further optimize the above technical solution, it also includes: a second nut 4, and the portion of the locating pin 1 close to the bending portion 10 and located outside the locating hole 100 has a second threaded section, and the second nut 4 is threadedly connected to the second threaded section and abuts against the core shaft 102.

[0033] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0034] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wire positioning structure in a spring winding process, wherein a positioning hole (100) is passed through a core shaft (102) of a machine tool (101), characterized in that: include: A positioning pin (1), wherein the positioning pin (1) is coaxially engaged in the positioning hole (100), and both ends of the positioning pin (1) are located outside the positioning hole (100), and one end of the positioning pin (1) is bent toward the direction close to the core shaft (102) to form a bending portion (10), and the bending portion (10) and the core shaft (102) jointly define a bayonet (2).

2. The steel wire positioning structure in the spring winding process according to claim 1, characterized in that: Also includes: A first nut (3), and an outer wall of the locating pin (1) at one end away from the bending portion (10) has a first threaded section, and the first threaded section is close to the core shaft (102), and the first nut (3) is threadedly connected to the first threaded section and abuts against the core shaft (102).

3. A wire positioning structure in a spring winding process according to claim 1 or 2, characterized in that: Also includes: A second nut (4), and a portion of the positioning pin (1) close to the bent portion (10) and located outside the positioning hole (100) has a second threaded section, and the second nut (4) is threadedly connected to the second threaded section and abuts against the core shaft (102).

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