Ratchet wheel type threading die

Abstract

The invention relates to the technical field of external thread machining, in particular to a ratchet wheel type threading die which comprises a wrench and a threading die body, the wrench comprises a shell, a ratchet wheel and a reversing shifting piece, and the ratchet wheel and the reversing shifting piece are arranged in the shell; the ratchet wheel is provided with a plurality of clamping parts movably arranged in the radial direction of the ratchet wheel and a driving structure used for controlling all the clamping parts to slide synchronously, the multiple clamping parts are evenly distributed in the axial direction of the ratchet wheel, and the clamping device has the advantages of being high in applicability and usability.

Description

Technical Field

[0001] The present application relates to the technical field of external thread processing, and in particular to a ratchet die. Background Art

[0002] In the current mechanical manufacturing field, die is a commonly used thread processing tool, mainly used for processing and correcting external threads. Among them, ratchet die is a new design launched for some special applications, such as places with narrow spaces. This die uses a ratchet structure design so that when the wrench is turned in the opposite direction, the die body will not rotate with it, greatly improving the convenience of external thread processing in a limited space.

[0003] In addition, in order to improve the applicability of the die, the existing die tools usually adopt a split design, which includes a wrench and a die body. After the die body is placed in the installation cavity of the wrench, it is fixed by tightening bolts.

[0004] Among them, the wrench is universal, while the die body is different according to the thread size to be processed. Therefore, a set of die tools usually contains die bodies of multiple sizes. Although this design enhances the scope of application of the tool, there are some problems in actual use. For example, the die body is easy to lose, or it is easy to fail after long-term use.

[0005] Moreover, due to the differences in the outer diameter, thickness and positioning structure of the die body produced by different manufacturers, some are positioned by one or more tapered holes, some are positioned by positioning grooves, and some are positioned by both positioning grooves and tapered holes. The positioning structure of the die with a ratchet structure is different from the above. Since the ratchet is rotating and the die body needs to be fixed on the ratchet, the traditional bolt-type fixing cannot be used, and a specific die body structure needs to be adopted.

[0006] This brings inconvenience to the replacement and maintenance of the die body. When part of the die body fails, the user needs to buy a new die body that matches the wrench, which undoubtedly increases the burden on the user.

[0007] Therefore, how to further improve the design of die tools on the basis of existing technologies, improve their applicability and ease of use, and reduce users' usage costs is an important technical challenge currently facing the field of thread processing tools. Summary of the invention

[0008] In order to improve applicability and ease of use, the present application provides a ratchet die.

[0009] The present application provides a ratchet die, which adopts the following technical solution: A ratchet die comprises a wrench and a die body, wherein the wrench comprises a shell, a ratchet and a reversing paddle arranged in the shell, the ratchet is provided with a plurality of clamping parts movably arranged in the radial direction of the ratchet, and a driving structure for controlling the synchronous sliding of all the clamping parts, and the plurality of the clamping parts are evenly distributed around the axial direction of the ratchet.

[0010] In one of the embodiments: the driving structure includes a bevel gear set, a thumbwheel, and a worm gear and a worm gear that mesh with each other, one end of the thumbwheel is arranged on an end surface of one end of the ratchet wheel and is exposed, and the other end is connected to the driving wheel of the bevel gear set, the driven wheel of the bevel gear set is connected to the worm gear, the worm gear is rotatably installed on the ratchet wheel, and the two are concentrically arranged; the clamping part is provided with a movable block, and the worm gear is provided with a movable groove for the movable block to slide.

[0011] In one embodiment, the turbine and the clamping portion are arranged between the ratchet and the housing to form axial positioning.

[0012] In one embodiment, the clamping portion includes a movable portion, a telescopic portion slidably mounted on the movable portion, and a first elastic member for keeping the telescopic portion extended, and the width of the telescopic portion is adapted to the positioning groove on the die body.

[0013] In one of the embodiments: a positioning cone for matching with the conical hole on the die body and a second elastic member for keeping the positioning cone extended are slidably mounted on the telescopic portion.

[0014] In one embodiment, the elastic force of the second elastic member is smaller than that of the first elastic member.

[0015] In one of the embodiments: a retaining assembly is provided on the telescopic portion, and when the telescopic portion is retracted at the movable portion, the retaining assembly can lock the positioning cone that has not been retracted back to the telescopic portion.

[0016] In one embodiment, the retaining assembly includes a building block slidably mounted on the telescopic portion, a locking rod connected to the building block, and a third elastic member for retaining the building block extending out of the telescopic portion, and the positioning cone is provided with a locking groove that cooperates with the locking rod.

[0017] In one embodiment, the movable portion and the telescopic portion both adopt a split structure formed by splicing left and right parts.

[0018] In one embodiment, the ratchet wheel adopts a split structure formed by splicing two left and right parts, and the installation cavity of the driving structure is formed by splicing.

[0019] In summary, this application has the following beneficial effects: 1. The initial clamping of the die assembly can be achieved by setting the telescopic part, and then the telescopic part is controlled by the driving structure to conveniently and quickly clamp and fix the die assembly. When the telescopic part is aligned with the die body with a positioning groove, it can be extended into the positioning groove for positioning; 2. By maintaining the component setting, when encountering a die body with a tapered hole, the positioning cone can be locked in the tapered hole for positioning, and the positioning is quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of this embodiment; Figure 2 is a schematic diagram of the structure after the cover is opened in this embodiment; Figure 3 is an internal cross-sectional view of this embodiment; Figure 4 Schematic diagram of the explosion structure of the ratchet in this embodiment; Figure 5 It is a schematic diagram of the explosion structure of this embodiment; Figure 6 is a schematic diagram of the structure of the mounting sleeve, turbine and clamping part in this embodiment; Figure 7 is a schematic diagram of the exploded structure of the clamping portion in this embodiment; Figure 8 Schematic diagram of the internal structure of the clamping part in this embodiment.

[0021] In the figure, 100, wrench; 110, shell; 111, shell body; 112, cover; 113, handle; 120, ratchet; 121, accommodating chamber; 130, reversing paddle; 131, elastic component; 1311, pressing block; 1312, reset spring; 132, dial key; 200, die body; 300, clamping part; 310, movable part; 320, telescopic part; 330, first elastic member; 340, positioning cone; 341, locking groove; 350, second elastic member; 360, retaining component; 361, building block; 362, locking rod; 363, third elastic member; 140, mounting sleeve; 400, driving structure; 410, paddle wheel; 420, bevel gear set; 430, worm; 440, turbine; 441, movable groove; 500, movable block. DETAILED DESCRIPTION

[0022] The present application is further described in detail below in conjunction with the accompanying drawings.

[0023] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0024] A ratchet die, such as Figure 1 As shown, it includes a wrench 100 and a die body 200, and the wrench 100 is provided with a mounting hole for detachable mounting of the die body 200.

[0025] Reference Figure 2 The wrench 100 includes a housing 110, and a ratchet 120 and a reversing paddle 130 disposed in the housing 110. The housing 110 includes an elliptical housing body 111 and a cover 112. Handles 113 are disposed at both ends of the housing body 111. The housing body 111 is provided with a chamber for installing the ratchet 120 and the reversing paddle 130. The chamber is connected to the mounting hole to form an integral whole. After the cover 112 is installed, the ratchet 120 and the reversing paddle 130 are axially positioned.

[0026] Reference Figure 3 The shell body 111 is provided with an elastic component 131 that is against the reversing paddle 130. The elastic component 131 includes a pressing block 1311 and a return spring 1312. The reversing paddle 130 is provided with two groups of teeth that are engaged with the ratchet 120. The reversing paddle 130 is rotatably mounted on the shell body 111 and connected to a dial key 132 located outside the cover 112. The reversing paddle 130 is controlled to swing by rotating the dial key 132, thereby switching the two groups of teeth to engage with the ratchet 120, and the engaging state of the teeth and the ratchet 120 is maintained by the elastic component 131.

[0027] The ratchet 120 is provided with a plurality of clamping parts 300 movably arranged in the radial direction of the ratchet 120 , and a driving structure 400 for controlling the synchronous sliding of all the clamping parts 300 . The plurality of clamping parts 300 are evenly distributed axially around the ratchet 120 .

[0028] Reference Figure 4 The driving structure 400 includes a bevel gear set 420, a thumbwheel 410, and a turbine 440 and a worm 430 that mesh with each other. The bevel gear set 420 includes a driving wheel and a driven wheel. One end of the thumbwheel 410 is arranged on one end surface of the ratchet 120 and is exposed, and the other end is connected to the driving wheel of the bevel gear set 420. The driven wheel of the bevel gear set 420 is connected to the worm 430.

[0029] Among them, in order to facilitate installation, the ratchet 120 adopts a split structure formed by splicing two parts on the left and right, and the installation cavity of the driving structure 400 is formed by splicing. The splicing method is used to facilitate the connection and installation between the bevel gear set 420, the dial wheel 410 and the worm 430. After the splicing and installation are completed, the worm 430 forms a rotating connection structure on the ratchet 120.

[0030] Reference Figure 3 and 5 A receiving chamber 121 is provided inside one end of the ratchet 120 facing the bottom of the chamber of the housing body 111, and a mounting sleeve 140 is installed on the receiving chamber 121. The clamping part 300 is inserted radially on the clamping part 300. The turbine 440 is also installed in the receiving chamber 121 so that the turbine 440 is rotatably installed on the ratchet 120. The ratchet 120 and the turbine 440 are concentrically arranged, and after the installation is completed, the turbine 440 is meshed with the worm 430.

[0031] Reference Figure 5 and 6 One end of the turbine 440 is against the mounting sleeve 140, and the other end of the turbine 440 is provided with a movable groove 441. The clamping part 300 is provided with a movable block 500, which is embedded in the movable groove 441 and can slide along the movable groove 441. The movable block 500 is controlled to slide in the movable groove 441 by rotating the turbine 440, thereby controlling the clamping part 300 to slide radially on the mounting sleeve 140.

[0032] Reference Figure 3 After installation, the turbine 440 and the clamping portion 300 are arranged between the ratchet 120 and the housing 110 to form an axial positioning.

[0033] like Figure 7 and Figure 8 As shown, the clamping part 300 includes a movable part 310, a telescopic part 320 slidably mounted on the movable part 310, and a first elastic member 330 for keeping the telescopic part 320 extended, and the width of the telescopic part 320 is adapted to the positioning groove on the die body 200. Among them, the telescopic part 320 slides within a certain range on the movable part 310, and in a natural state, the first elastic member 330 applies force to the telescopic part 320, so that its end extends out of the movable part 310. The first elastic member 330 is two springs in this embodiment. It should be noted here that the number of springs is not limited, as long as the above effect can be achieved.

[0034] The telescopic part 320 is slidably installed with a retaining assembly 360, a positioning cone 340 adapted to the conical hole on the die body 200, and a second elastic member 350 for keeping the positioning cone 340 extended. The sliding direction of the positioning cone 340 is the same as that of the telescopic part 320. The second elastic member 350 is a spring, and the elastic force of the second elastic member 350 is smaller than that of the first elastic member 330. When the positioning cone 340 is subjected to force, the second elastic member 350 is compressed first, and after the positioning cone 340 is retracted into the telescopic part 320, additional force will act on the telescopic part 320 to compress the first elastic member 330.

[0035] The retaining assembly 360 includes a building block 361 slidably installed on the telescopic part 320, a locking rod 362 connected to the building block 361, and a third elastic member 363 for keeping the building block 361 extending out of the telescopic part 320. The sliding direction of the building block 361 is perpendicular to the sliding direction of the positioning cone 340, and the positioning cone 340 is provided with a locking groove 341 that cooperates with the locking rod 362.

[0036] Among them, when the telescopic part 320 is telescoped with the movable part 310, the retaining assembly 360 can lock the positioning cone 340 that has not retracted back to the telescopic part 320. Specifically, when the positioning cone 340 cooperates with the conical hole on the die body 200, it will not retract. After the turbine 440 rotates, the telescopic part 320 will be compressed. When it is compressed to a certain extent, the movable part 310 will push the building block 361 to compress the telescopic part 320. In this way, the locking rod 362 is inserted into the locking groove 341 to lock the positioning cone 340. In this way, when the die is in use, the positioning cone 340 remains extended into the conical hole to lock the die body 200 in the circumferential direction.

[0037] In addition, refer to the attached Figure 7 For easy installation, both the movable portion 310 and the telescopic portion 320 adopt a split structure design formed by splicing left and right parts.

[0038] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ratchet die, comprising a wrench (100) and a die body (200), wherein the wrench (100) comprises a housing (110), and a ratchet (120) and a reversing paddle (130) disposed in the housing (110), wherein: The ratchet (120) is provided with a plurality of clamping parts (300) movably arranged in a radial direction around the ratchet (120), and a driving structure (400) for controlling the synchronous sliding of all the clamping parts (300), wherein the plurality of clamping parts (300) are evenly distributed axially around the ratchet (120).

2. A ratchet die according to claim 1, characterized in that: The driving structure (400) comprises a bevel gear set (420), a thumbwheel (410), and a turbine (440) and a worm (430) meshing with each other; one end of the thumbwheel (410) is disposed on an end surface of one end of the ratchet (120) and is exposed, and the other end is connected to the driving wheel of the bevel gear set (420); the driven wheel of the bevel gear set (420) is connected to the worm (430); the turbine (440) is rotatably mounted on the ratchet (120), and the two are concentrically disposed; the clamping portion (300) is provided with a movable block (500), and the turbine (440) is provided with a movable groove (441) for the movable block (500) to slide.

3. A ratchet die according to claim 2, characterized in that: The turbine (440) and the clamping portion (300) are arranged between the ratchet (120) and the housing (110) to form axial positioning.

4. The ratchet die according to claim 1, characterized in that: The clamping portion (300) comprises a movable portion (310), a telescopic portion (320) slidably mounted on the movable portion (310), and a first elastic member (330) for keeping the telescopic portion (320) extended, wherein the width of the telescopic portion (320) is adapted to the positioning groove on the die body (200).

5. A ratchet die according to claim 4, characterized in that: A positioning cone (340) adapted to fit the conical hole on the die body (200) and a second elastic member (350) for keeping the positioning cone (340) extended are slidably mounted on the telescopic portion (320).

6. A ratchet die according to claim 5, characterized in that: The elastic force of the second elastic member (350) is smaller than that of the first elastic member (330).

7. The ratchet die according to claim 5, characterized in that: The telescopic portion (320) is provided with a retaining assembly (360), and when the telescopic portion (320) is telescoped on the movable portion (310), the retaining assembly (360) can lock the positioning cone (340) that has not been retracted back into the telescopic portion (320).

8. The ratchet die according to claim 7, characterized in that: The retaining assembly (360) comprises a building block (361) slidably mounted on the telescopic portion (320), a locking rod (362) connected to the building block (361), and a third elastic member (363) for retaining the building block (361) extending out of the telescopic portion (320); and the positioning cone (340) is provided with a locking groove (341) that cooperates with the locking rod (362).

9. A ratchet die according to claim 8, characterized in that: The movable portion (310) and the telescopic portion (320) both adopt a split structure formed by splicing left and right parts.

10. The ratchet die according to claim 8, characterized in that: The ratchet (120) adopts a split structure formed by splicing two left and right parts, and the installation cavity of the driving structure (400) is formed by splicing.

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