Concentric tooth thread rolling wheel body for thread rolling machine

Abstract

The utility model relates to a concentric tooth thread rolling wheel body for a thread rolling machine. The concentric tooth thread rolling wheel body is used for machining rolled threads after assembly. The thread rolling wheel body is in a cone frustum shape and is provided with a cylindrical hole in the axial direction, the wheel face of the thread rolling wheel body is provided with a plurality of thread rolling teeth surrounding a wheel shaft of the thread rolling wheel body, the thread rolling teeth are distributed on the wheel shaft of the thread rolling wheel body at equal intervals in the axial direction, each thread rolling tooth is in a circular ring shape, and the circle center of each thread rolling tooth is located on the axis of the wheel shaft of the thread rolling wheel body. 2-3 different included angles are formed between the connecting line of the tops of the thread rolling teeth and the axis. The concentric tooth thread rolling wheel body sucks the thread rolling teeth through the front section, so that steel pipe threads are machined more conveniently in a labor-saving mode, and the output strength of workers is reduced. According to the concentric tooth thread rolling wheel, the tooth stress structure during thread machining is guaranteed through the length of 0.5-1 tooth at the front end of the gap and the fact that the last tooth of the standard tooth section is the complete tooth, and therefore the machining service life of the concentric tooth thread rolling wheel body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a concentric tooth thread rolling wheel body for a thread rolling machine. BACKGROUND

[0002] Threaded pipes are mostly processed by turning in single-piece small-batch production. For galvanized pipes, the threaded pipes processed by turning will damage the galvanizing layer of the galvanized pipes and cause the anticorrosion performance to decrease. For application scenarios with high safety requirements such as gas pipelines, the threaded pipes processed by turning will affect the safe use. To overcome the above problems, the prior art generally uses a thread rolling machine to process the galvanized pipes, and the thread rolling machine processes threads on the workpieces in a cold state.

[0003] The existing thread rolling machines all use a gradual rolling method to roll threads. During work, whether radial rolling or axial rolling, the thread rolling is formed by continuously increasing the feeding force. Such a thread rolling machine is prone to cause the processed pipes to crack or deform with the increase of the feeding force when processing pipes with thin walls or pipes with seams, and the radial force during processing is the feeding controlled by a person. The threads processed by such a gradual rolling method have a low fullness rate.

[0004] To solve the problems that the processed pipes are prone to crack or deform with the increase of the feeding force and the threads have a low fullness rate, CN201110333690.9 provides a gradual withdrawal thread rolling machine. The thread rolling machine includes a machine base, a thread rolling wheel disc, and a main shaft. The main shaft is installed on the upper end of the machine base, and clamps are installed on both ends of the main shaft. A slanted block with a slanted upper end surface is arranged on the slide. A curved disc and a small front disc are arranged on the thread rolling wheel disc. At least three centrifugal arc-shaped wheel die frame limiting strips are arranged on the curved disc. At least three wheel die frames that slide radially are arranged on the small front disc. A pulley is arranged on the outer edge of each wheel die frame to abut against the upper end surface of the slanted block. A wheel die frame limiting groove that cooperates with the wheel die frame limiting strip is arranged on each wheel die frame. A thread rolling wheel body is arranged at the inner end of each wheel die frame. The radial gradual withdrawal processing of the thread rolling wheel body on the pipes can effectively avoid the cracking or deformation of the processed pipes. The radial feeding during the processing of the pipes is automatically controlled through the cooperation of the pulley and the slanted block. Therefore, the threads processed have a high fullness rate and high product consistency.

[0005] The patent No. CN202527635U provides a thread rolling wheel with anti-broken structure, which comprises a thread rolling wheel body, a wheel surface of the thread rolling wheel body is provided with thread rolling threads spirally arranged around the wheel shaft, the thread rolling threads are divided into three thread segments along the axial direction, and the thread segments are a starting thread segment, a middle thread segment and an outlet thread segment in sequence from the starting end of the thread rolling threads; the thread line of the starting thread segment and the thread line of the outlet thread segment are at least three turns around the wheel shaft; the thread angle of the thread rolling threads is increased from the middle thread segment and the starting thread segment joint to the starting end direction, and is increased from the middle thread segment and the outlet thread segment joint to the tail end direction; and the hardness of the thread rolling threads is decreased from the middle to the two ends. The thread rolling wheel provided by the patent is not easy to be broken and cracked at the thread end, and the service life is improved. However, the thread tooth of the wheel surface of the thread rolling wheel is the thread rolling thread spirally arranged around the wheel shaft, and the installation size needs to be strictly controlled according to the position of the wheel during installation, and the processing precision of the thread rolling disc is required to be extremely high. SUMMARY

[0006] The technical problem to be solved by the utility model is to provide a thread rolling wheel for a thread rolling machine, which can overcome the problem that the installation precision of the thread rolling disc thread rolling wheel is extremely high.

[0007] The utility model provides a technical scheme: a concentric tooth thread rolling wheel body for a thread rolling machine, the thread rolling wheel body is in the shape of a circular truncated cone, and has a cylindrical hole along the axial direction. A wheel surface of the thread rolling wheel body is provided with a plurality of thread rolling teeth around the wheel shaft of the thread rolling wheel body, the plurality of thread rolling teeth are equidistantly arranged on the wheel shaft of the thread rolling wheel body along the axial direction, each thread rolling tooth is in the shape of a ring, and the center of the thread rolling tooth is located on the axis of the wheel shaft of the thread rolling wheel body.

[0008] The thread rolling wheel body comprises an inhaling thread rolling tooth segment and a standard thread rolling tooth segment, the inhaling thread rolling tooth segment is composed of 5-7 thread rolling teeth, the angle between the connecting line of the top ends of the thread rolling teeth of the inhaling thread rolling tooth segment and the axis of the wheel shaft of the thread rolling wheel body is 13º, the standard thread rolling tooth segment is composed of 3-5 thread rolling teeth, the angle between the connecting line of the top ends of the thread rolling teeth of the standard thread rolling tooth segment and the axis of the wheel shaft of the thread rolling wheel body is 1.78º, the front end of the inhaling tooth segment is vacant by a cylinder with a length of 0.5-1 tooth, and the last tooth of the standard tooth segment is a complete tooth.

[0009] The thread rolling wheel body comprises a transition thread rolling tooth segment, the transition thread rolling tooth segment is located between the inhaling thread rolling tooth segment and the standard thread rolling tooth segment, the transition thread rolling tooth segment is composed of 2-3 thread rolling teeth, and the angle between the connecting line of the top ends of the thread rolling teeth of the transition thread rolling tooth segment and the axis of the wheel shaft of the thread rolling wheel body is 7º.

[0010] The utility model discloses a concentric tooth thread rolling wheel body, each thread rolling tooth is circular and equidistantly arranged on the wheel axle of the thread rolling wheel body along the axial direction, compared with the spiral tooth thread rolling wheel, the precision requirement during installation is greatly reduced, the concentric tooth thread rolling wheel body is used through the group, and the spiral thread is generated through automatic tracking and rolling. The concentric tooth thread rolling wheel body is more convenient and saves labor when processing the steel pipe thread through the action of the front suction thread rolling tooth, and the labor intensity of workers is reduced. The concentric tooth thread rolling wheel guarantees the tooth stress structure during thread processing through the last tooth of the standard tooth segment being the complete tooth, so as to prolong the processing life of the concentric tooth thread rolling wheel body. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic diagram of the utility model embodiment 1;

[0012] Figure 2 It is the left view of Figure 1 .

[0013] Figure 3 It is the structure schematic diagram of the utility model embodiment 2;

[0014] Figure 4 It is the left view of Figure 3 . DETAILED DESCRIPTION

[0015] The embodiment of the application is further described in detail below in combination with the drawings.

[0016] The utility model discloses a concentric tooth thread rolling wheel body, the thread rolling wheel body is conical table shape, and there is a cylindrical hole along the axial direction. The wheel surface of the thread rolling wheel body is equipped with a plurality of thread rolling teeth around the wheel axle of the thread rolling wheel body, a plurality of thread rolling teeth are equidistantly arranged on the wheel axle of the thread rolling wheel body along the axial direction, each thread rolling tooth is circular, and the center of the thread rolling tooth is located on the axis of the wheel axle of the thread rolling wheel.

[0017] The concentric tooth thread rolling wheel body includes a suction thread rolling tooth segment and a standard thread rolling tooth segment, the suction thread rolling tooth segment is composed of 5-7 thread rolling teeth, the included angle between the top end connecting line of the thread rolling tooth of the suction thread rolling tooth segment and the wheel axle axis of the thread rolling wheel body is 13 DEG, the standard thread rolling tooth segment is composed of 3-5 thread rolling teeth, the included angle between the top end connecting line of the thread rolling tooth of the standard thread rolling tooth segment and the wheel axle axis of the thread rolling wheel body is 1.78 DEG, the front end of the suction tooth segment is vacant 0.5-1 tooth length cylinder (the tooth length refers to the interval L between the center lines of two adjacent teeth of the suction thread rolling tooth segment), and the last tooth of the standard tooth segment is a complete tooth.

[0018] The concentric toothed thread rolling wheel body includes a transition thread rolling section, which is located between the intake thread rolling section and the standard thread rolling section. The transition thread rolling section consists of 2-3 threads, and the line connecting the tips of the threads of the transition thread rolling section makes an angle of 7º with the axis of the wheel body. Example

[0019] like Figure 1 As shown, this utility model includes a concentric toothed thread rolling wheel body 1, which is shaped like a frustum of a cone and has a cylindrical hole 2 along the axial direction. The wheel surface of the thread rolling wheel body is provided with a plurality of thread rolling teeth 3 surrounding the wheel shaft of the thread rolling wheel body. The plurality of thread rolling teeth are equidistantly arranged on the wheel shaft of the thread rolling wheel body along the axial direction, and each thread rolling tooth is circular, with the center of the thread rolling tooth located on the axis of the thread rolling wheel body. The device includes a suction threading tooth section 3.1 and a standard threading tooth section 3.3. The suction threading tooth section consists of 6 threads, and the angle between the line connecting the tips of the threads in the suction threading tooth section and the axis of the threading wheel is 13º. The standard threading tooth section consists of 4 threads, and the angle between the line connecting the tips of the threads in the standard threading tooth section and the axis of the threading wheel is 1.78º. The foremost end of the suction threading tooth section has a cylinder 4 with a length of 0.5-1 thread, and the last thread of the standard threading tooth section is a complete thread. Example

[0020] like Figure 3 As shown, this utility model includes a concentric toothed thread rolling wheel body 1, which is shaped like a frustum of a cone and has a cylindrical hole 2 along the axial direction. The wheel surface of the thread rolling wheel body 1 is provided with a plurality of thread rolling teeth surrounding the wheel shaft. The plurality of thread rolling teeth are equidistantly arranged on the wheel shaft along the axial direction, and each thread rolling tooth is annular, with the center of the thread rolling tooth located on the axis of the wheel shaft. The thread rolling wheel body includes an intake thread rolling tooth section 3.1, a transition tooth section 3.2, and a standard thread rolling tooth section 3.3. The intake thread rolling tooth section 3.1 consists of 5 threads, and the angle between the line connecting the tips of the threads in the intake thread rolling tooth section 3.1 and the axis of the thread rolling wheel body is 13º. The transition thread rolling tooth section 3.2 consists of 3 threads, and the angle between the line connecting the tips of the threads in the transition thread rolling tooth section 3.2 and the axis of the thread rolling wheel body is 7º. The standard thread rolling tooth section 3.3 consists of 2 threads, and the angle between the line connecting the tips of the threads in the standard thread rolling tooth section 3.3 and the axis of the thread rolling wheel body is 1.78º. The foremost end of the intake tooth section is missing a cylinder 4 of 0.5-1 tooth length, and the last tooth of the standard tooth section is a complete tooth.

[0021] The utility model discloses a concentric tooth thread rolling wheel body group uses, for example installs the wheel die frame of thread rolling wheel disc of automatic slide frame thread rolling machine of disclosure No. CN116037821A: four wheel die frames that are evenly distributed along the circumferential direction are provided with respectively detachable fixed axle, the thread rolling wheel body of the utility model is installed on every fixed axle respectively, and the thread rolling wheel body 1 is set on the fixed axle through the cylindrical hole 2, automatic tracking rolling, generates helical thread. The thread rolling tooth top line of the utility model presents 2-3 different angles of intersection with the axis, and the concentric tooth thread rolling wheel body is more convenient and labor-saving when processing the thread of steel pipe through the effect of the front section suction thread rolling tooth, reduces the strength of the worker. The thread rolling tooth of the concentric tooth thread rolling wheel is the complete tooth for the last tooth of the standard tooth section through the vacancy front end 0.5-1 tooth length, guarantees the tooth stress structure when processing thread, to this extends the processing life of the concentric tooth thread rolling wheel body.

Claims

1. A concentric toothed thread rolling wheel body for a thread rolling machine, characterized in that: The thread rolling wheel is shaped like a frustum of a cone and has a cylindrical hole along the axial direction. The wheel surface of the thread rolling wheel is provided with a number of thread rolling teeth that surround the wheel shaft of the thread rolling wheel. The number of thread rolling teeth are equidistantly arranged on the wheel shaft of the thread rolling wheel along the axial direction. Each thread rolling tooth is circular and the center of the thread rolling tooth is located on the axis of the thread rolling wheel.

2. The concentric toothed thread rolling wheel body for a thread rolling machine according to claim 1, characterized in that: The thread rolling wheel body includes an intake thread rolling tooth section and a standard thread rolling tooth section. The intake thread rolling tooth section consists of 5-7 threads, and the angle between the line connecting the tips of the threads in the intake thread rolling tooth section and the axis of the thread rolling wheel body is 13º. The standard thread rolling tooth section consists of 3-5 threads, and the angle between the line connecting the tips of the threads in the standard thread rolling tooth section and the axis of the thread rolling wheel body is 1.78º. The foremost end of the intake thread rolling tooth section has a cylindrical gap of 0.5-1 tooth length, and the last tooth of the standard thread rolling tooth section is a complete tooth.

3. The concentric toothed thread rolling wheel body for a thread rolling machine according to claim 2, characterized in that: The thread rolling wheel body includes a transition thread rolling section, which is located between the intake thread rolling section and the standard thread rolling section. The transition thread rolling section consists of 2-3 threads, and the line connecting the tips of the threads of the transition thread rolling section makes an angle of 7º with the axis of the wheel body.

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