Double-end screw die

Abstract

The utility model discloses a double-end screw die, which comprises a thread rolling die, a thread pressing die, a thread pressing die, a thread pressing die and a thread pressing die, wherein the thread rolling die is arranged on a preset lathe; the double-end screw die further comprises a driving assembly, the driving assembly is installed on a dragging plate of the lathe in a matched mode, and the thread rolling die is installed at the output end of the driving assembly, so that the thread rolling die is indirectly installed on the dragging plate, and the thread rolling die moves to one side of a blank clamped to the main shaft through the dragging plate. The thread rolling die is provided with a plurality of rolling wheels, and the rolling wheels are arranged at one end of the thread rolling die in a rolling mode. According to the double-end screw die, the thread rolling die is arranged on the preset lathe, in the thread machining process of the two ends of a blank, one end of the blank is clamped on the main shaft of the lathe and rotates at a constant speed along with the main shaft, and the thread rolling die moves towards the blank at a constant speed along with the carriage and is fed by a preset amount to form a threaded rod at the end of a double-end screw.

Description

Technical Field

[0001] The utility model relates to the technical field of screw processing moulds, in particular to a double-head screw mould. Background Art

[0002] Stud, also called double-headed screw or double-headed stud. It is used to connect the fixed link function of the machine. Both ends of the stud have threads, and the screw in the middle can be thick or thin. Usually, the two ends of the stud may have the same or different thread specifications, or different types of threads, such as one end is a thread and the other end is a screw. Stud screws are usually used in situations where they need to be connected to a nut or bolt at one end and to a fixture or other workpiece at the other end. Since stud screws have two threaded ends, more flexible installation and connection methods can be achieved, which helps to simplify the assembly process and improve efficiency. In practical applications, stud screws can be used in various mechanical equipment, furniture, building structures and other occasions that require connection to meet different connection requirements. For the processing of stud screws, rolling forming dies are often used to roll the threads on both ends of the blank to produce threaded rods at both ends of the screw.

[0003] However, the existing thread rolling forming mold usually uses a single rolling wheel to roll the surface of the blank, which easily causes the blank to vibrate, thereby reducing the stability and yield of the production process. Utility Model Content

[0004] Based on this, it is necessary to provide a double-head screw mold to address the technical problems of production stability and low yield in existing thread rolling forming molds.

[0005] A double-head screw mold comprises a thread rolling mold, which is arranged on a preset lathe and reciprocates along a carriage of the preset lathe toward a main shaft of the lathe.

[0006] The double-headed screw mold also includes a driving assembly, which is mounted on the slide of the lathe. The thread rolling mold is installed on the output end of the driving assembly, so that the thread rolling mold is indirectly installed on the slide. Then, the thread rolling mold is moved to one side of the blank clamped at the spindle through the slide.

[0007] The thread rolling die is provided with a plurality of rolling wheels, and the plurality of rolling wheels are rotatably arranged at one end of the thread rolling die.

[0008] In one embodiment, the above-mentioned thread rolling mold includes a box body and a plurality of roller shafts. The box body is connected to the output end of the driving component. The plurality of roller shafts are rotatably connected to the box body along the extension direction of the lathe spindle, and each roller shaft extends to the outside of the box body at one end toward the lathe spindle.

[0009] In one embodiment, the plurality of rolling wheels correspond to the plurality of roller shafts respectively, and each rolling wheel is correspondingly sleeved on the end of the roller shaft facing the main shaft of the lathe.

[0010] In one embodiment, each of the roller shafts is rotatably connected to the housing via a matching bearing.

[0011] In one of the embodiments, the above-mentioned thread rolling die also includes a linkage mechanism, which is arranged at the other end of the box body relative to the plurality of rolling wheels, and the linkage mechanism connects the plurality of roller shafts, so that the plurality of roller shafts are respectively connected in transmission through the linkage mechanism.

[0012] In one embodiment, the linkage mechanism includes a plurality of gears and an idler wheel. The plurality of gears correspond to a plurality of roller shafts one by one, and each gear is sleeved on a corresponding roller shaft. The idler wheel is arranged between the plurality of gears, and the idler wheel is meshed with the plurality of gears respectively, so that the plurality of gears are connected through the idler wheel.

[0013] In one embodiment, the idler wheel is connected to one end of the housing through an idler wheel shaft.

[0014] In one embodiment, the driving assembly includes a linear guide rail and a mounting seat. The linear guide rail is mounted on a slide surface of a preset lathe; the mounting seat is connected to a slider surface of the linear guide rail.

[0015] In one embodiment, the thread rolling die is mounted on the surface of the mounting seat.

[0016] In one of the embodiments, a mating groove is provided on the bottom surface of the box body, and correspondingly, a mating boss is provided on the top surface of the mounting seat; the mating boss matches the mating groove, so that when the thread rolling die is installed to the mounting seat, the mating groove meets the mating boss for mating connection.

[0017] In one of the embodiments, the above-mentioned thread rolling die includes two rolling wheels, and correspondingly, the thread rolling die also includes two rolling shafts and two gears; the two rolling shafts are connected to the side walls of the box body and rotate parallel to each other; the two rolling wheels are respectively mounted on the ends of the corresponding roller shafts facing the blank; the two gears are respectively mounted on the side surfaces of the two roller shafts, and are respectively meshed with an idler wheel.

[0018] The double-headed screw mold of the utility model sets the thread rolling mold on a preset lathe, and the thread rolling mold reciprocates with the carriage of the preset lathe toward the lathe spindle. During the thread processing at both ends of the blank, one end of the blank is clamped on the lathe spindle and rotates at a constant speed with the spindle. The thread rolling mold moves at a constant speed toward the blank with the carriage, and forms a threaded rod at the end of the double-headed screw after feeding a preset amount. The double-headed screw mold also includes a driving component, which is cooperatively mounted on the carriage of the lathe, and the thread rolling mold is mounted on the output end of the driving component, so that the thread rolling mold is indirectly mounted on the carriage, and then, the thread rolling mold moves to one side of the blank clamped at the spindle through the carriage, and then, the driving component drives the thread rolling mold to feed laterally from the side of the blank to complete the thread processing and forming of the end of the blank. In addition, the thread rolling die is provided with a plurality of rolling wheels, and the plurality of rolling wheels are rotatably arranged at one end of the thread rolling die. When the thread rolling die rolls the blank, the plurality of rolling wheels are fed simultaneously from multiple sides toward the end of the blank, so as to improve the stress state of the blank during the processing and make it tend to be balanced, thereby avoiding vibration of the blank caused by single-phase stress during the rolling process, thereby effectively avoiding damage to the blank and improving the processing accuracy of the stud screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a double-headed screw mold in one embodiment;

[0020] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of a double-head screw mold in the illustrated embodiment. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0027] See also Figure 1 to Figure 2 The utility model discloses a double-headed screw mold, which includes a thread rolling mold 100. The thread rolling mold 100 is arranged on a preset lathe, and the thread rolling mold 100 reciprocates toward the lathe spindle along with the slide of the preset lathe. During the thread processing at both ends of the blank, one end of the blank is clamped on the lathe spindle and rotates at a constant speed with the spindle. The thread rolling mold 100 moves at a constant speed toward the blank along with the slide, and forms a threaded rod at the end of the double-headed screw after feeding a preset amount. The double-headed screw mold also includes a driving component 200, which is installed on the slide of the lathe, and the thread rolling mold 100 is installed on the output end of the driving component 200, so that the thread rolling mold 100 is indirectly installed on the slide. Then, the thread rolling mold 100 is moved to one side of the blank clamped at the main shaft through the slide, and then, the driving component 200 drives the thread rolling mold 100 to feed horizontally from the side of the blank to complete the thread processing and forming of the end of the blank. Specifically, the thread rolling die 100 is provided with a plurality of rolling wheels 110, and the plurality of rolling wheels 110 are rollingly arranged at one end of the thread rolling die 100. When the thread rolling die 100 performs rolling processing on the blank, the plurality of rolling wheels 110 are simultaneously fed from multiple sides toward the end of the blank, so as to improve the stress state of the blank during the processing and make it tend to be balanced, thereby avoiding vibration of the blank caused by single-phase stress during the rolling process, thereby effectively avoiding damage to the blank and improving the processing accuracy of the stud screws.

[0028] Furthermore, the thread rolling die 100 includes a box 120 and a plurality of roller shafts 130, the box 120 is connected to the output end of the driving assembly 200, the plurality of roller shafts 130 are respectively rotatably connected to the box 120 along the extension direction of the lathe main shaft, and each roller shaft 130 extends to the outside of the box 120 at one end facing the lathe main shaft. Specifically, the plurality of rolling wheels 110 correspond to the plurality of roller shafts 130 one by one, and each rolling wheel 110 is correspondingly sleeved on the end of the roller shaft 130 facing the lathe main shaft. In practical applications, the driving assembly 200 drives the box 120 to feed the blank from the side of the main shaft, and the side surfaces of the plurality of rolling wheels 110 abut against the side surfaces of the blank rotating at a constant speed to avoid rolling processing on the side surfaces; in this process, the plurality of rolling wheels 110 are driven by the blank and rotate with the corresponding roller shafts 130 as the axis, so as to complete the thread processing of the end of the blank. In this embodiment, each roller shaft 130 is rotatably connected to the box body 120 via a matching bearing 131 .

[0029] Furthermore, the thread rolling die 100 further includes a linkage mechanism 140, which is arranged at the other end of the box 120 relative to the plurality of rolling wheels 110, and the linkage mechanism 140 is connected to the plurality of roller shafts 130, so that the plurality of roller shafts 130 are respectively connected by transmission through the linkage mechanism 140, thereby improving the integrity and rotation synchronization between the plurality of roller shafts 130. Specifically, the linkage mechanism 140 includes a plurality of gears 141 and an idler wheel 142, the plurality of gears 141 correspond to the plurality of roller shafts 130 one by one, and each gear 141 is sleeved on the corresponding roller shaft 130; the idler wheel 142 is arranged between the plurality of gears 141, and the idler wheel 142 is respectively meshed with the plurality of gears 141, so that the plurality of gears 141 are connected by transmission through the idler wheel 142, thereby improving the synchronization rate between the plurality of gears 141, and further improving the thread processing accuracy of the blank. In this embodiment, the idler wheel 142 is connected to one end of the box 120 through an idler wheel shaft 143.

[0030] Furthermore, the driving assembly 200 includes a linear guide rail 210 and a mounting seat 220. The linear guide rail 210 is mounted on the surface of the carriage of the preset lathe, so that the linear guide rail 210 can reciprocate along the extension direction of the lathe spindle with the carriage; the mounting seat 220 is connected to the surface of the slider of the linear guide rail 210. Specifically, the thread rolling die 100 is mounted on the surface of the mounting seat 220, so that the thread rolling die 100 can reciprocate along the extension direction of the lathe spindle with the linear guide rail 210, so as to adjust the processing length of the blank by the thread rolling die 100. At the same time, the linear guide rail 210 can drive the thread rolling die 100 to be fed from the side of the blank to perform thread processing on the blank.

[0031] Furthermore, a mating groove 121 is provided on the bottom surface of the box body 120, and correspondingly, a mating boss 221 is provided on the top surface of the mounting seat 220; the mating boss 221 corresponds to and matches the mating groove 121, so that when the thread rolling die 100 is installed on the mounting seat 220, the mating groove 121 meets the mating boss 221 for mating connection, thereby limiting the relative displacement between the box body 120 and the mounting seat 220, thereby improving the installation stability of the thread rolling die 100, reducing the vibration of the thread rolling die 100 during the processing, and ensuring the processing accuracy.

[0032] Furthermore, in the present embodiment, the thread rolling die 100 includes two rolling wheels 110, and correspondingly, the thread rolling die 100 also includes two rolling shafts and two gears 141; the two rolling shafts are connected to the side wall of the box body 120 in parallel rotation; the two rolling wheels 110 are respectively sleeved on the end of the corresponding roller shaft 130 facing the blank; the two gears 141 are respectively sleeved on the side surfaces of the two roller shafts 130, and are respectively engaged with an idler wheel 142, so that the two rolling wheels 110 can rotate in opposite directions at the same speed, so as to realize the synchronous rolling processing of the side surface of the end of the blank by the two rolling wheels 110. In practical applications, the thread rolling die 100 can effectively reduce the vibration, bending, etc. of the blank during the processing by coordinating the processing of the blank with the two rolling wheels 110, effectively avoid the damage of the blank, and improve the processing accuracy.

[0033] In summary, the double-headed screw mold disclosed by the utility model sets the thread rolling mold on a preset lathe, and the thread rolling mold reciprocates with the slide of the preset lathe toward the lathe spindle. During the thread processing at both ends of the blank, one end of the blank is clamped on the lathe spindle and rotates at a constant speed with the spindle. The thread rolling mold moves at a constant speed toward the blank with the slide, and forms a threaded rod at the end of the double-headed screw after feeding a preset amount. The double-headed screw mold also includes a driving assembly, which is mounted on the slide of the lathe, and the thread rolling mold is mounted on the output end of the driving assembly, so that the thread rolling mold is indirectly mounted on the slide, so that the thread rolling mold moves to one side of the blank clamped at the spindle through the slide, and then the driving assembly drives the thread rolling mold to feed laterally from the side of the blank to complete the thread processing and forming at the end of the blank. In addition, the thread rolling die is provided with a plurality of rolling wheels, and the plurality of rolling wheels are rotatably arranged at one end of the thread rolling die. When the thread rolling die rolls the blank, the plurality of rolling wheels are fed simultaneously from multiple sides toward the end of the blank, so as to improve the stress state of the blank during the processing and make it tend to be balanced, thereby avoiding vibration of the blank caused by single-phase stress during the rolling process, thereby effectively avoiding damage to the blank and improving the processing accuracy of the stud screws.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A double-head screw mold, characterized in that: include: A thread rolling die, wherein the thread rolling die is arranged on a preset lathe, and the thread rolling die reciprocates along with the carriage of the preset lathe toward the main shaft of the lathe; The stud screw mold further comprises a driving assembly, which is mounted on a carriage of a lathe in cooperation with the driving assembly, and the thread rolling mold is mounted on an output end of the driving assembly, so that the thread rolling mold is indirectly mounted on the carriage, and then the thread rolling mold is moved to one side of the blank clamped at the spindle through the carriage; The thread rolling die is provided with a plurality of rolling wheels, and the plurality of rolling wheels are rotatably arranged at one end of the thread rolling die.

2. The double-head screw mold according to claim 1, characterized in that: The thread rolling die includes a box body and a plurality of roller shafts, wherein the box body is connected to the output end of the driving assembly, and the plurality of roller shafts are rotatably connected to the box body along the extension direction of the lathe spindle, and each of the roller shafts extends to the outside of the box body at one end toward the lathe spindle.

3. The double-head screw mold according to claim 2, characterized in that: The plurality of rolling wheels correspond to the plurality of roller shafts one by one, respectively, and each rolling wheel is correspondingly sleeved on the end of the roller shaft facing the main shaft of the lathe.

4. The double-head screw mold according to claim 3, characterized in that: Each of the roller shafts is rotatably connected to the box body via an adapted bearing.

5. The double-head screw mold according to claim 4, characterized in that: The thread rolling die also includes a linkage mechanism, which is arranged at the other end of the box body relative to the plurality of rolling wheels, and the linkage mechanism connects the plurality of roller shafts.

6. The double-head screw mold according to claim 5, characterized in that: The linkage mechanism includes a plurality of gears and an idler wheel. The plurality of gears correspond to the plurality of roller shafts one by one, and each gear is sleeved on the corresponding roller shaft. The idler wheel is arranged between the plurality of gears, and the idler wheel is meshed with the plurality of gears respectively.

7. The double-head screw mold according to claim 6, characterized in that: The idler wheel is connected to one end of the housing through an idler wheel shaft.

8. The double-head screw mold according to claim 7, characterized in that: The driving assembly comprises a linear guide rail and a mounting seat, wherein the linear guide rail is mounted on the surface of a carriage of a preset lathe; and the mounting seat is connected to the surface of a slider of the linear guide rail.

9. The double-head screw mold according to claim 8, characterized in that: The thread rolling die is installed on the surface of the mounting seat.

10. The double-head screw mold according to claim 9, characterized in that: The bottom surface of the box body is provided with a matching groove, and correspondingly, the top surface of the mounting seat is provided with a matching boss; the matching boss is matched with the matching groove.

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