A thread rolling machine suitable for fastener thread processing of different sizes

By integrating a multi-shaped clamping block quick-change device and a return spring mechanism, the cumbersome operation of traditional thread rolling machines, which requires changing the entire clamp or repeatedly adjusting the jaws, is solved. This enables fasteners to be clamped quickly and accurately and adjusted adaptively, improving production efficiency and equipment adaptability.

CN224926959UActive Publication Date: 2026-11-03YANGSEN FASTENERS (HEBEI) CO LTD +1
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Patent Information

Application Number
CN202522651843.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-15
Publication Date
2026-11-03
Estimated Expiration
2035-12-15

AI Technical Summary

Technical Problem

When processing fasteners of different sizes and shapes, existing thread rolling machines require changing the entire fixture or repeatedly adjusting the jaws, which is cumbersome, time-consuming, and cannot achieve fast, accurate clamping and adaptive adjustment.

Method used

The device employs a multi-shaped quick-change clamping block device, which combines the precise fit between the insertion hole of the clamping block and the fixing auxiliary rod, along with the locking mechanism of the pin and the slot. Through the design of the sliding rod, compression spring, and return spring, it achieves quick replacement and precise clamping of the clamping block.

Benefits of technology

It enables rapid and precise clamping and adaptive adjustment of fasteners of different sizes and shapes, significantly shortening changeover time and improving the adaptability and ease of operation of the equipment, making it particularly suitable for flexible production of multiple varieties and small batches.

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Abstract

The utility model relates to the fastener processing thread rolling technical field of different sizes, the utility model provides a kind of thread rolling machine for the thread processing of fastener of different sizes suitable, including base, the top of base is provided with mobile slide rail, the side of mobile slide rail is provided with thread rolling machine body, the side of base is provided with slide rail mobile rotating lever, the top of base is provided with fixed equipment, the fixed equipment includes clamping moving plate, the fixed equipment includes rotating handle, the side of base is provided with control panel.The utility model provides a kind of thread rolling machine for the thread processing of fastener of different sizes suitable, through the quick replacement device of multiple shape clamping block, the effect of quick, accurate clamping and self-adapting adjustment to different sizes, multiple shape fastener is realized, solves the technical problem that the tedious operation needs a lot of time of traditional thread rolling machine in prior art needs to replace integral fixture or repeatedly adjusts chuck jaw.
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Description

Technical Field

[0001] This utility model relates to the field of thread rolling technology for fasteners of different sizes, specifically, to a thread rolling machine suitable for thread rolling of fasteners of different sizes. Background Technology

[0002] Thread rolling, a process in fastener manufacturing, is typically used to machine threads on the exterior of fasteners such as screws and bolts. This method helps improve the strength, durability, and precision of the threads while reducing material waste during processing. The application of thread rolling varies depending on the size of the fastener.

[0003] A thread rolling machine for forming threads on metal fasteners (publication number: CN223222388U) includes a storage box, a fixing device, and a mounting plate. The storage box has a discharge hole at the center of its bottom front side, and a storage compartment is fixedly connected to the front side of its lower surface. The output shaft of a first motor is fixedly connected to a first bidirectional screw, and both ends of the first bidirectional screw are threadedly connected to directional slides. Conveying slides are fixedly connected to the left and right sides of the bottom front end of the directional slides. A connecting rod is installed on the right side of the front end of the conveying slide, and a first automatic telescopic rod is fixedly connected to the left side of the connecting rod. A push plate is fixedly connected to the output shaft of the first automatic telescopic rod. This thread rolling machine for forming threads on metal fasteners allows for easy adjustment of the spacing between slides, is suitable for metal fasteners of different sizes, facilitates uniform orientation of metal fasteners, and helps to secure metal fasteners.

[0004] The aforementioned patent achieves easy adjustment of the spacing between slides through the cooperation of components such as storage boxes and fixing devices, making it suitable for metal fasteners of different sizes. However, the operation is complex and requires a long adjustment period, failing to achieve the effect of fast, precise clamping and adaptive adjustment for fasteners of different sizes and shapes. To solve the technical problem of traditional thread rolling machines requiring the replacement of the entire fixture or repeated adjustment of the jaws, which requires a lot of time, we propose a thread rolling machine suitable for thread processing of fasteners of different sizes. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this utility model provide a thread rolling machine suitable for thread processing of fasteners of different sizes, which solves the technical problem that traditional thread rolling machines require a lot of time and cumbersome operation of changing the entire fixture or repeatedly adjusting the jaws.

[0006] According to one aspect, at least one embodiment of the present invention provides a thread rolling machine suitable for thread processing of fasteners of different sizes, comprising: a base, a movable slide rail provided on the top of the base, a thread rolling machine body provided on the side of the movable slide rail, a slide rail movable rotating rod provided on the side of the base, a fixing device provided on the top of the base, the fixing device including a clamping movable plate, the fixing device including a rotating handle, a control panel provided on the side of the base, a touch screen provided on the side of the control panel, an adjustment button provided on the side of the control panel, and a multi-shaped clamping block quick-change device provided on the top of the clamping movable plate; The multi-shaped clamping block quick-change device includes a groove formed on the top of the clamping moving plate. A sliding rod is slidably connected to the inner side of the groove, and a clamping fixing block is fixedly connected to the top of the sliding rod. A cylindrical groove is formed on the circumferential surface of the sliding rod, and a compression spring is fixedly connected to the inner side of the cylindrical groove. A pin is fixedly connected to one end of the compression spring. A slot is formed on the side of the clamping moving plate, and a pressing rod is slidably connected to the inner side of the slot. The entire device can achieve precise and efficient clamping and quick replacement of clamping fixing blocks through the action of accessories such as the sliding rod, compression spring, and pin, thereby realizing the effect of thread rolling of fasteners of different sizes and shapes.

[0007] For example, in at least one embodiment of this utility model, a thread rolling machine suitable for thread processing of fasteners of different sizes is provided, further comprising: the inner side of the slot is located on the displacement trajectory of the pin, and the diameter of the pin is consistent with the diameter of the slot. This design, where the pin and slot diameters are consistent, improves the accuracy, stability, and safety of the locking and releasing mechanism, effectively reduces instability factors during operation, and makes the replacement of the clamping and fixing blocks more efficient and reliable.

[0008] A fixing auxiliary rod is fixedly connected to the side of the clamping moving plate, and an insertion hole is provided at the bottom of the clamping fixing block. The fixing auxiliary rod and the insertion hole further enhance the functionality, operability, and durability of the device by providing additional support, improving the stability and accuracy of the clamping fixing block, and simplifying the replacement process of the clamping fixing block.

[0009] The top of the fixing auxiliary rod is positioned on the displacement trajectory of the insertion hole. This design, where the top of the fixing auxiliary rod is positioned on the displacement trajectory of the insertion hole, enhances the stability and accuracy of the fixing device.

[0010] One end of the pin is located on the displacement trajectory of the pressing rod. This design allows for precise pushing of the pin to compress the spring, causing the pin to disengage from the slot.

[0011] The diameter of the groove is the same as the diameter of the sliding rod, and the diameter of the cylindrical groove is the same as the diameter of the pin. This design, where the groove and sliding rod have the same diameter, and the cylindrical groove and pin have the same diameter, ensures precise fit and positioning between components, improving the smoothness of movement.

[0012] According to another aspect, at least one embodiment of this utility model also provides a thread rolling machine suitable for thread processing of fasteners of different sizes, comprising: a convenient removal device provided at the inner bottom of the groove, the convenient removal device including a return spring, one end of the return spring being fixedly connected to the inner bottom of the groove, and the other end of the return spring being fixedly connected to a circular push plate; a sliding groove is formed on the inner side of the groove, and a slider is slidably connected to the inner side of the sliding groove. This design is intended to enable operators to quickly and conveniently remove the clamping block when changing it, thereby improving work efficiency.

[0013] For example, in at least one embodiment of this utility model, a thread rolling machine suitable for thread processing of fasteners of different sizes is provided, further comprising: one end of the slider is fixedly connected to the circumferential surface of a circular push plate, the diameter of the circular push plate being consistent with the inner diameter of the groove. This design improves the stability, motion accuracy, and operational smoothness of the device by ensuring precise fit between the circular push plate and the groove and the guiding effect of the slider, while reducing unnecessary friction and wear between components and increasing service life.

[0014] Two slides and sliders are provided, and they are symmetrical about the vertical central axis of the groove. The symmetrical design of the slides and sliders mainly improves the stability and smoothness of the device.

[0015] The bottom of the sliding rod is located on the displacement trajectory of the circular push plate. This design is intended to use the elasticity of the return spring to push the circular push plate vertically, thereby causing the sliding rod to pop out.

[0016] The beneficial effects of this utility model are as follows: This invention utilizes a multi-shape clamping block quick-change device to achieve rapid and precise clamping and adaptive adjustment of fasteners of different sizes and shapes. The clamping and fixing blocks, through precise engagement of the insertion holes and fixing auxiliary rods, combined with the locking mechanism of the pins and slots, ensure the stability and coaxiality of the workpiece clamping. This design replaces the cumbersome operation of traditional thread rolling machines, which requires changing the entire fixture or repeatedly adjusting the clamps, significantly shortening changeover time and improving the equipment's adaptability to fasteners of different specifications. It is particularly suitable for flexible production scenarios with multiple varieties and small batches.

[0017] This invention integrates a convenient removal device with a return spring mechanism, enabling automatic ejection and rapid replacement of the clamping block, significantly improving operational convenience and work efficiency. After the pressing rod unlocks, the return spring pushes the circular push plate smoothly upward along the slide groove, automatically ejecting the sliding rod and clamping block from the groove without manual prying or tool assistance. This design solves the problems of inconvenient disassembly and jamming in traditional clamping devices, reduces operational intensity, shortens non-processing time, and ensures smooth continuous production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention; Figure 2 This is a side view of one embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of a multi-shaped clamping block quick-change device in one embodiment of the present invention; Figure 4 This is a side sectional view of one embodiment of the present invention; Figure 5 As one embodiment of the present utility model Figure 3 A magnified structural diagram of A in the middle; Figure 6 As one embodiment of the present utility model Figure 4 A magnified structural diagram of B in the diagram.

[0020] In the diagram: 1. Base; 2. Moving slide rail; 3. Thread rolling machine body; 4. Slide rail moving rod; 5. Fixing device; 6. Clamping moving plate; 7. Rotating handle; 8. Control panel; 9. Touch screen; 10. Adjustment button; 11. Multi-shaped clamping block quick change device; 12. Easy removal device; 111. Groove; 112. Sliding rod; 113. Clamping fixing block; 114. Cylindrical groove; 115. Compression spring; 116. Pin; 117. Slot; 118. Pressing rod; 119. Fixing auxiliary rod; 1120. Insertion hole; 121. Return spring; 122. Circular push plate; 123. Slide groove; 124. Slider. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-6As shown, it illustrates a thread rolling machine for fasteners of different sizes in one embodiment of the present invention, including a base 1, a movable slide rail 2 on the top of the base 1, a thread rolling machine body 3 on the side of the movable slide rail 2, a slide rail movable rotating rod 4 on the side of the base 1, a fixing device 5 on the top of the base 1, the fixing device 5 including a clamping movable plate 6, the fixing device 5 including a rotating handle 7, a control panel 8 on the side of the base 1, a touch screen 9 on the side of the control panel 8, an adjustment button 10 on the side of the control panel 8, and a multi-shaped clamping block quick-change device 11 on the top of the clamping movable plate 6; The multi-shaped clamping block quick-change device 11 includes a groove 111, which is formed on the top of the clamping moving plate 6. A sliding rod 112 is slidably connected to the inner side of the groove 111, and a clamping fixing block 113 is fixedly connected to the top of the sliding rod 112. A cylindrical groove 114 is formed on the circumferential surface of the sliding rod 112, and a compression spring 115 is fixedly connected to the inner side of the cylindrical groove 114. A pin 116 is fixedly connected to one end of the compression spring 115. A slot 117 is formed on the side of the clamping moving plate 6, and a pressing rod 118 is slidably connected to the inner side of the slot 117. The entire device can achieve precise and efficient clamping and quick replacement of the clamping fixing block 113 through the action of accessories such as the sliding rod 112, the compression spring 115, and the pin 116, thereby achieving the effect of thread rolling of fasteners of different sizes and shapes.

[0028] The inner side of the slot 117 is located on the displacement trajectory of the pin 116, and the diameter of the pin 116 is the same as the diameter of the slot 117. The design that the diameters of the pin 116 and the slot 117 are the same improves the accuracy, stability and safety of the locking and releasing mechanism, and effectively reduces unstable factors in operation, making the replacement of the clamping block 113 more efficient and reliable.

[0029] A fixing auxiliary rod 119 is fixedly connected to the side of the clamping moving plate 6, and an insertion hole 1120 is provided at the bottom of the clamping fixing block 113. The fixing auxiliary rod 119 and the insertion hole 1120 further enhance the functionality, operability and durability of the device by providing additional support, improving the stability and accuracy of the clamping fixing block 113, and simplifying the replacement process of the clamping fixing block 113.

[0030] The top of the fixing auxiliary rod 119 is located on the displacement trajectory of the socket 1120. This design, where the top of the fixing auxiliary rod 119 is located on the displacement trajectory of the socket 1120, enhances the stability and accuracy of fixing the device 5.

[0031] One end of the pin 116 is located on the displacement trajectory of the pressing rod 118. This design allows the pin 116 to be precisely pushed to compress the spring 115, causing the pin 116 to disengage from the slot 117.

[0032] The diameter of the groove 111 is the same as the diameter of the sliding rod 112, and the diameter of the cylindrical groove 114 is the same as the diameter of the pin 116. The design that the diameters of the groove 111 and the sliding rod 112 are the same, and the diameters of the cylindrical groove 114 and the pin 116 are the same, ensures precise fit and positioning between components and improves the smoothness of movement.

[0033] This embodiment provides a thread rolling machine suitable for thread processing of fasteners of different sizes. Through a multi-shape clamping block quick-change device 11, it achieves rapid and precise clamping and adaptive adjustment of fasteners of different sizes and shapes. The clamping and fixing block 113, through the precise cooperation between the insertion hole 1120 and the fixing auxiliary rod 119, combined with the locking mechanism of the pin 116 and the slot 117, ensures the stability and coaxiality of the workpiece clamping. This design replaces the cumbersome operation of traditional thread rolling machines that require changing the entire fixture or repeatedly adjusting the clamps, significantly shortening the changeover time and improving the equipment's adaptability to fasteners of different specifications. It is particularly suitable for flexible production scenarios with multiple varieties and small batches.

[0034] See in some examples Figures 1-6 The operator sets processing parameters, such as fastener size and thread specifications, via the touchscreen 9 on the control panel 8. The fastener to be processed is placed on the clamping moving plate 6 of the fixing device 5. The operator rotates the handle 7 to drive the clamping moving plate 6 along the sliding rail 2, aligning and fixing the fastener axis with the thread rolling head axis of the thread rolling machine body 3. When processing fasteners of different sizes or shapes, the clamping fixing block 113 is quickly replaced using the multi-shape clamping block quick-change device 11. Pressing the pressing rod 118 pushes the pin rod 116 to compress the spring 115, causing the pin rod 116 to disengage from the slot 117. At this time, the sliding rod 112 and the clamping fixing block 113 can be removed from the groove 111. After replacing with a suitable clamping fixing block 113, its bottom insertion hole 1120 is aligned with the fixing... The fixed auxiliary rod 119 is inserted, and the pin 116 automatically engages with the slot 117 under the action of the compression spring 115, completing the quick and precise replacement and locking of the clamping and fixing block 113. The equipment is started, and the thread rolling head inside the thread rolling machine body 3 rotates at high speed under the drive of the motor. After the thread rolling head contacts the surface of the fastener, under the action of huge radial pressure and friction, the tooth shape on the thread rolling head causes the metal on the surface of the workpiece to undergo plastic flow, gradually forming a continuous, precise, and high-strength external thread. By rotating the slide rail to move the rotating rod 4, the thread rolling machine body 3 can be moved laterally along the moving slide rail 2 to adjust the relative position between the thread rolling head and the fastener to adapt to the processing requirements of workpieces with different diameters. During the adjustment process, the cooperation between the fixed auxiliary rod 119 and the insertion hole 1120 ensures the stability and centering of the clamping system.

[0035] refer to Figures 1-6In some embodiments, a thread rolling machine suitable for thread processing of fasteners of different sizes further includes a convenient removal device 12 provided on the inner bottom of a groove 111. The convenient removal device 12 includes a return spring 121, one end of which is fixedly connected to the inner bottom of the groove 111, and the other end of which is fixedly connected to a circular push plate 122. A sliding groove 123 is provided on the inner side of the groove 111, and a slider 124 is slidably connected to the inner side of the sliding groove 123. This design is intended to enable operators to quickly and conveniently remove the clamping block 113 when changing it, thereby improving work efficiency.

[0036] One end of the slider 124 is fixedly connected to the circumferential surface of the circular push plate 122, the diameter of which is the same as the inner diameter of the groove 111. This design improves the stability, motion accuracy, and smoothness of operation of the device by ensuring a precise fit between the circular push plate 122 and the groove 111 and the guiding function of the slider 124, while reducing unnecessary friction and wear between components and extending service life.

[0037] There are two slides 123 and sliders 124, which are symmetrical about the vertical central axis of the groove 111. The symmetrical design of the slides 123 and sliders 124 mainly improves the stability and smoothness of the device.

[0038] The bottom of the sliding rod 112 is located on the displacement trajectory of the circular push plate 122. This design is intended to use the elasticity of the return spring 121 to push the circular push plate 122 to move vertically, thereby pushing the sliding rod 112 to pop out.

[0039] In this embodiment, the automatic ejection and quick replacement of the clamping block 113 are achieved by using the convenient removal device 12, greatly improving operational convenience and work efficiency. After the pressing rod 118 is unlocked, the return spring 121 pushes the circular push plate 122 to rise smoothly along the slide groove 123, automatically ejecting the sliding rod 112 and the clamping block 113 from the groove 111 without manual prying or tool assistance. This design solves the problems of inconvenient disassembly and easy jamming of traditional clamping devices, reduces operational intensity, shortens non-processing time, and ensures the smoothness of continuous production.

[0040] In this embodiment, after processing is completed, pressing the pressing rod 118 again unlocks the clamping and fixing block 113, and the convenient removal device 12 is automatically activated. The reset spring 121 pushes the circular push plate 122 upward, and guided by the slider 124 along the slide groove 123, the sliding rod 112 and the clamping and fixing block 113 are smoothly pushed out of the groove 111, which makes it easy for the operator to quickly remove the workpiece and replace the next workpiece. The equipment supports continuous operation mode. After processing one workpiece, it can be quickly reset and enter the next cycle. The touch screen 9 displays the processing status, parameters and alarm information in real time. The operator can make fine adjustments through the adjustment button 10 to realize human-machine collaboration and process control.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A thread rolling machine suitable for thread processing of fasteners of different sizes, characterized in that, The device includes a base (1), a movable slide rail (2) on the top of the base (1), a thread rolling machine body (3) on the side of the movable slide rail (2), a slide rail moving rod (4) on the side of the base (1), a fixing device (5) on the top of the base (1), the fixing device (5) including a clamping moving plate (6), the fixing device (5) including a rotating handle (7), a control panel (8) on the side of the base (1), a touch screen (9) on the side of the control panel (8), an adjustment button (10) on the side of the control panel (8), and a multi-shaped clamping block quick-change device (11) on the top of the clamping moving plate (6). The multi-shaped clamping block quick-change device (11) includes a groove (111), which is opened on the top of the clamping moving plate (6). A sliding rod (112) is slidably connected to the inner side of the groove (111). A clamping fixing block (113) is fixedly connected to the top of the sliding rod (112). A cylindrical groove (114) is opened on the circumferential surface of the sliding rod (112). A compression spring (115) is fixedly connected to the inner side of the cylindrical groove (114). A pin (116) is fixedly connected to one end of the compression spring (115). A slot (117) is opened on the side of the clamping moving plate (6). A pressing rod (118) is slidably connected to the inner side of the slot (117).

2. A thread rolling machine for fasteners of different sizes according to claim 1, characterized in that, The inner side of the slot (117) is located on the displacement trajectory of the pin (116), and the diameter of the pin (116) is the same as the diameter of the slot (117).

3. A thread rolling machine for fasteners of different sizes according to claim 2, characterized in that, The side of the clamping moving plate (6) is fixedly connected to a fixing auxiliary rod (119), and the bottom of the clamping fixing block (113) is provided with an insertion hole (1120).

4. A thread rolling machine for fasteners of different sizes according to claim 3, characterized in that, The top of the fixed auxiliary rod (119) is located on the displacement trajectory of the insertion hole (1120).

5. A thread rolling machine for fasteners of different sizes according to claim 4, characterized in that, One end of the pin (116) is located on the displacement trajectory of the pressing rod (118).

6. A thread rolling machine for fasteners of different sizes according to claim 5, characterized in that, The diameter of the groove (111) is the same as the diameter of the sliding rod (112), and the diameter of the cylindrical groove (114) is the same as the diameter of the pin (116).

7. A thread rolling machine for fasteners of different sizes according to claim 6, characterized in that, The bottom inner side of the groove (111) is provided with a convenient removal device (12). The convenient removal device (12) includes a return spring (121). One end of the return spring (121) is fixedly connected to the bottom inner side of the groove (111), and the other end of the return spring (121) is fixedly connected to a circular push plate (122). A sliding groove (123) is provided on the inner side of the groove (111), and a slider (124) is slidably connected to the inner side of the sliding groove (123).

8. A thread rolling machine for fasteners of different sizes according to claim 7, characterized in that, One end of the slider (124) is fixedly connected to the circumferential surface of the circular push plate (122), and the diameter of the circular push plate (122) is consistent with the inner diameter of the groove (111).

9. A thread rolling machine for fasteners of different sizes according to claim 8, characterized in that, There are two slides (123) and sliders (124), and they are symmetrical about the vertical central axis of the groove (111).

10. A thread rolling machine for fasteners of different sizes according to claim 9, characterized in that, The bottom of the sliding rod (112) is located on the displacement trajectory of the circular push plate (122).

Citation Information

Patent Citations

  • Thread rolling machine for metal fastener thread forming machining

    CN223222388U