Stop screw and processing technology thereof

Abstract

The stop screw comprises a polished rod part, a rotating part is arranged at one end of the polished rod part, a spiral positioning groove is formed in the outer wall of the polished rod part, and a first side hole extending in the radial direction and close to the rotating part and a second side hole extending in the radial direction and far away from the rotating part are formed in the polished rod part; the second side hole and the first side hole are both connected with the positioning groove, a filiform thread which extends along the track and partially extends out of the groove opening is embedded in the positioning groove, one end of the filiform thread extends into the first side hole, and the other end of the filiform thread extends into the second side hole. The machining technology comprises the following steps that S1, primary blank making is conducted; s2, secondary blank making; s3, third-pass blank making; s4, fourth-pass blank making; s5, filiform threads are manufactured; s6, filiform threads are installed; and S7, the filiform threads are fixed. The screw has the resilience capacity, and the tensioning and anti-loosening effects are achieved; the technology has the advantages of being high in specificity, low in machining difficulty, complete in overall function and high in practicability.

Description

Technical Field

[0001] The invention relates to the technical field of fastener manufacturing and processing, and more specifically, to an anti-loosening screw and a processing technology thereof. Background Art

[0002] The thread of a conventional screw is usually integrated with the body and has a certain rigidity. The thread forms a rigid connection with the matching thread groove. Without the cooperation of a shock-absorbing washer, it is difficult for the screw to achieve an anti-loosening effect, and the overall effect is poor. Accordingly, the present invention proposes an anti-loosening screw and a processing technology thereof. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a locking screw and a processing technology thereof.

[0004] To solve the above technical problems, the object of the present invention is achieved as follows: the present invention involves a kind of anti-loosening screw, including a smooth rod portion, a rotating portion is provided at one end of the smooth rod portion, a spiral positioning groove is provided on the outer wall of the smooth rod portion, the smooth rod portion is provided with a first side hole extending radially and close to the rotating portion, and a second side hole extending radially and away from the rotating portion, the second side hole and the first side hole are both connected to the positioning groove, the positioning groove is embedded with a filamentary screw thread extending along a trajectory and partially extending out of the slot, one end of the filamentary screw thread extends into the first side hole, and the other end extends into the second side hole.

[0005] The present invention is further configured as follows: it also includes a first threaded hole and a second threaded hole extending in the axial direction, the first threaded hole is opened on the rotating part, one end of the first threaded hole is connected to the outside world, and the other end extends to be connected to the first side hole, the second threaded hole is opened on the light rod part, one end of the second threaded hole is connected to the outside world, and the other end extends to be connected to the second side hole, the first threaded hole is threadedly connected to a first set screw with an end portion abutting against the filamentary thread, and the second threaded hole is threadedly connected to a second set screw with an end portion abutting against the filamentary thread.

[0006] The present invention is further configured as follows: the filamentary screw thread is woven from two strands of wire, one strand of wire is a steel wire, and the other strand of wire is an elastic wire.

[0007] The present invention is further configured such that the elastic thread is made of rubber material.

[0008] The present invention also relates to a processing technology for anti-loosening screws, comprising the following steps:

[0009] S1. One-step blanking; cold forging to form a locking screw body consisting of a polished rod portion and a rotating portion;

[0010] S2. Secondary blanking: machining to form a spiral positioning groove;

[0011] S3. Three-step blanking; drilling a first side hole and a second side hole;

[0012] S4. Four-step blanking; tapping the first threaded hole and the second threaded hole;

[0013] S5. Making a filamentary screw thread; taking a bundle of steel wires and a bundle of wires made of rubber material of equal length, weaving the two together to form one strand;

[0014] S6. Install the filamentary screw thread; coil the filamentary screw thread in the positioning groove, and extend one end into the first side hole and the other end into the second side hole;

[0015] S7. Fix the filamentary screw thread; first take out the first set screw, thread it into the first threaded hole until the end thereof abuts against the filamentary screw thread extending into the first side hole, so that one end of the filamentary screw thread is fixed; then take out the second set screw, thread it into the second threaded hole, until the end thereof abuts against the filamentary screw thread extending into the second side hole, so that the other end of the filamentary screw thread is fixed.

[0016] To sum up, the present invention has the following beneficial effects: the anti-loosening screw involved in the present invention, the thread on the screw is a filamentary thread that is separated from the smooth rod part, the filamentary thread is arranged along the groove, and the two ends are fixed, when it cooperates with the thread groove, it can float slightly, and the filamentary thread is woven by a strand of steel wire and a strand of elastic wire, resulting in the filamentary thread having the ability to rebound when floating along the axial and length directions, thereby achieving the tensioning and anti-loosening effect; the anti-loosening screw processing technology involved in the present invention has the characteristics of strong specificity and low processing difficulty, complete overall function and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 It is a partial structural schematic diagram of the present invention;

[0021] Figure 5 It is a schematic structural diagram of the present invention for embodying the filamentary screw thread. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the patent requirements of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0023] The present invention is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0024] Example 1

[0025] See also Figures 1 to 5 As shown, the present embodiment involves an anti-loosening screw, comprising a smooth rod portion 1, a rotating portion 2 being provided at one end of the smooth rod portion 1, a spiral positioning groove 3 being provided on the outer wall of the smooth rod portion 1, a first side hole 4 extending radially and close to the rotating portion, and a second side hole 5 extending radially and away from the rotating portion being provided on the smooth rod portion 1, the second side hole 5 and the first side hole 4 being connected to the positioning groove 3, a filamentary screw thread 6 extending along a trajectory and partially extending out of the slot being embedded in the positioning groove 3, one end of the filamentary screw thread 6 extending into the first side hole 4, and the other end extending into the second side hole 5.

[0026] Furthermore, it also includes a first threaded hole 7 and a second threaded hole 8 extending in the axial direction, the first threaded hole 7 is opened on the rotating part 2, one end of the first threaded hole 7 is connected to the outside world, and the other end extends to be connected to the first side hole 4, the second threaded hole 8 is opened on the light rod part 1, one end of the second threaded hole 8 is connected to the outside world, and the other end extends to be connected to the second side hole 5, the first threaded hole 7 is internally threadedly connected to a first set screw 9 with an end portion abutting against the filamentary thread, and the second threaded hole 8 is internally threadedly connected to a second set screw 10 with an end portion abutting against the filamentary thread.

[0027] Furthermore, the filamentary screw thread 6 is woven from two strands of wire, one strand of wire is a steel wire, and the other strand of wire is an elastic wire; the elastic wire is a rubber material.

[0028] In this embodiment, one end of the filamentary screw thread 6 extends into the first side hole 4 and is locked and fixed by a first locking screw 9 threadedly connected in the first threaded hole 7; the other end of the filamentary screw thread 6 extends into the second side hole 5 and is locked and fixed by a second locking screw 10 threadedly connected in the second threaded hole 8; the inner part of the middle part of the filamentary screw thread 6 is arranged in the positioning groove 3 and extends along the trajectory of the groove, while the outer part of the filamentary screw thread 6 is used as a screw thread without self-tapping capability.

[0029] When the thread is screwed on, the outer portion of the threaded thread 6 will be embedded in the thread groove of the threaded hole. Since the threaded thread 6 in the middle portion can float appropriately along the axial direction and the length extension direction, it can provide resilience.

[0030] In addition, the filamentary screw thread 6 is woven from two strands of wire, one strand of wire is steel wire and the other strand of wire is elastic wire, which ensures rigidity while being elastic to achieve an anti-loosening effect, so that the anti-loosening screw is not easy to fall off after being screwed into the threaded hole.

[0031] A processing technology for preventing loosening screws comprises the following steps:

[0032] S1. One-step blanking; cold forging to form a locking screw body consisting of a polished rod portion and a rotating portion;

[0033] S2. Secondary blanking: machining to form a spiral positioning groove;

[0034] S3. Three-step blanking; drilling a first side hole and a second side hole;

[0035] S4. Four-step blanking; tapping the first threaded hole and the second threaded hole;

[0036] S5. Making a filamentary screw thread; taking a bundle of steel wires and a bundle of wires made of rubber material of equal length, weaving the two together to form one strand;

[0037] S6. Install the filamentary screw thread; coil the filamentary screw thread in the positioning groove, and extend one end into the first side hole and the other end into the second side hole;

[0038] S7. Fix the filamentary screw thread; first take out the first set screw, thread it into the first threaded hole until the end thereof abuts against the filamentary screw thread extending into the first side hole, so that one end of the filamentary screw thread is fixed; then take out the second set screw, thread it into the second threaded hole, until the end thereof abuts against the filamentary screw thread extending into the second side hole, so that the other end of the filamentary screw thread is fixed.

[0039] The anti-loosening screw involved in the present invention has a threaded thread that is separated from the bare rod part. The threaded thread is arranged along the groove and fixed at both ends. When it cooperates with the thread groove, it can float slightly. The threaded thread is woven from a steel wire and an elastic wire, so that when the threaded thread floats along the axial direction and the length direction, it has the ability to rebound, thereby achieving the tensioning and anti-loosening effects. The anti-loosening screw processing technology involved in the present invention has the characteristics of strong specificity and low processing difficulty, complete overall functions and strong practicality.

[0040] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0041] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A locking screw, comprising a polished rod, one end of which is provided with a rotating portion, characterized in that: A spiral positioning groove is provided on the outer wall of the light rod part, and a first side hole extending radially and close to the rotating part and a second side hole extending radially and away from the rotating part are provided on the light rod part. The second side hole and the first side hole are both connected to the positioning groove, and a filamentary screw tooth extending along a trajectory and partially extending out of the groove is embedded in the positioning groove, and one end of the filamentary screw tooth extends into the first side hole, and the other end extends into the second side hole.

2. The anti-loosening screw according to claim 1, characterized in that: It also includes a first threaded hole and a second threaded hole extending in the axial direction, the first threaded hole is opened on the rotating part, one end of the first threaded hole is connected to the outside world, and the other end extends to be connected to the first side hole, the second threaded hole is opened on the smooth rod part, one end of the second threaded hole is connected to the outside world, and the other end extends to be connected to the second side hole, the first threaded hole is threadedly connected to a first set screw with an end portion abutting against the filamentary thread, and the second threaded hole is threadedly connected to a second set screw with an end portion abutting against the filamentary thread.

3. The anti-loosening screw according to claim 2, characterized in that: The filamentary screw thread is woven from two strands of wire, one strand of wire is a steel wire, and the other strand of wire is an elastic wire.

4. The anti-loosening screw according to claim 3, characterized in that: The elastic thread is made of rubber material.

5. A processing technology for anti-loosening screws according to claim 4, characterized in that: The following steps are involved: S1. One-step blanking; cold forging to form a locking screw body consisting of a polished rod portion and a rotating portion; S2. Secondary blanking: machining to form a spiral positioning groove; S3. Three-step blanking; drilling a first side hole and a second side hole; S4. Four-step blanking; tapping the first threaded hole and the second threaded hole; S5. Making a filamentary screw thread; taking a bundle of steel wires and a bundle of wires made of rubber material of equal length, weaving the two together to form one strand; S6. Install the filamentary screw thread; coil the filamentary screw thread in the positioning groove, and extend one end into the first side hole and the other end into the second side hole; S7. Fix the filamentary screw thread; first take out the first set screw, thread it into the first threaded hole until the end thereof abuts against the filamentary screw thread extending into the first side hole, so that one end of the filamentary screw thread is fixed; then take out the second set screw, thread it into the second threaded hole, until the end thereof abuts against the filamentary screw thread extending into the second side hole, so that the other end of the filamentary screw thread is fixed.

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