A tool head for micro gear picking

Abstract

The utility model belongs to the technical field of machining, especially relate to a tool head for micro gear material taking, including tool head base body, the one end of tool head base body protrudes with the columnar body, the other end of tool head base body is equipped with micro gear top taking post, the micro gear top taking post is cylindrical structure, the first cross groove is recessed to the shaft center of micro gear top taking post and is towards the direction of tool head base body, the groove depth of first cross groove is first length, first cross groove divides the front end of micro gear top taking post into four same and mutually separate fan -shaped columnar body, the vertex of four fan -shaped columnar body is towards the direction of tool head base body and is turned into four same fan -shaped groove, the groove depth of fan -shaped groove is second length, the bottom of first cross groove is equipped with the second cross groove and is towards the direction of tool head base body, and first cross groove and second cross groove are intercommunication. Through using the utility model, the accurate cooperation of the material taking device after gear processing and the inner hole of micro gear can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and in particular relates to a tooling head for picking up micro gears. Background Technology

[0002] As a core component of electronic equipment, precision instruments, and automotive transmission systems, the production process of micro gears is gradually upgrading towards full automation. In the production of micro gears using equipment such as vertical injection molding machines and gear grinding machines, the material handling process must meet three core requirements: "high-precision positioning, non-destructive gripping, and fast cycle time response."

[0003] However, traditional gear-removing devices, such as those described in patent application number 202021811764.6, use a pull rod to move a movable expansion core inward. The inner wall of the expansion core slides along the outer wall of the cone, forcing its radial dimension to increase, thus tightening the gear. Then, a rocker arm is rotated to abut against the end face of the gear, fixing it in place. While this expansion-fixing method works well for ordinary gears, it is unsuitable for micro gears. This is because the inner diameter of micro gears is typically only 2-5mm, and the expansion-fixing method requires tightening the inner hole, which can easily cause irreversible damage. Furthermore, the expansion-fixing method places stringent requirements on the material properties of the expansion core. Existing expansion cores are prone to over-expansion or under-expansion when expanding into the inner hole of the micro gear, making it difficult to remove the micro gear or causing it to slip.

[0004] Therefore, the material handling device after gear processing in the existing technology is difficult to fit and fix with the inner hole of the micro gear. Utility Model Content

[0005] The purpose of this invention is to provide a tooling head for picking up micro gears, which aims to solve the problem in the prior art that the picking device after gear processing is difficult to fit and fix with the inner hole of the micro gear.

[0006] To achieve the above objectives, this utility model provides a tooling head for picking up micro gears, comprising a tooling head base, a columnar body protruding from one end of the tooling head base, and a micro gear ejector post at the other end of the tooling head base. The micro gear ejector post has a cylindrical structure, and a first cross groove is recessed at the axis of the micro gear ejector post toward the tooling head base. The groove depth of the first cross groove is a first length. The first cross groove divides the front end of the micro gear ejector post into four fan-shaped columns of the same size and separated from each other. The apex of the four fan-shaped columns is machined toward the tooling head base to form four fan-shaped grooves of the same size. The groove depth of the fan-shaped grooves is a second length. The bottom of the first cross groove is provided with a second cross groove facing the tool head base, and the first cross groove and the second cross groove are interconnected.

[0007] As an optional solution of this utility model, the arc-shaped sides of the four sector-shaped cylinders are turned towards the apex to form four first conical surfaces of the same size.

[0008] As an optional solution of this utility model, the groove wall of the fan-shaped groove is machined outward to form four second conical surfaces of the same size.

[0009] As an optional embodiment of this invention, a quarter-circular annular surface is provided between the first conical surface and the second conical surface.

[0010] As an optional solution of this utility model, the first cross groove is a square column groove; the second cross groove is a cylindrical groove.

[0011] As an optional embodiment of this invention, the second length is less than the first length; the first length is less than the length of the micro gear ejector post.

[0012] As an optional solution of this utility model, a first connecting cylinder, a first connecting frustum, a second connecting cylinder, a second connecting frustum and a third connecting cylinder are sequentially provided between the micro gear ejector and the columnar body.

[0013] As an optional embodiment of this utility model, the bottom radius of the micro gear ejector column is smaller than the bottom radius of the first connecting cylinder; the bottom radius of the first connecting cylinder is the same as the upper bottom radius of the first connecting frustum; the lower bottom radius of the first connecting frustum is the same as the bottom radius of the second connecting cylinder, the upper bottom radius of the second connecting frustum, and the bottom radius of the columnar body; the lower bottom radius of the second connecting frustum is the same as the bottom radius of the third connecting cylinder.

[0014] As an optional solution of this utility model, the second connecting platform is provided with a first fixing through hole, which is symmetrically arranged along the central axis of the second connecting platform.

[0015] As an optional solution of this utility model, the third connecting cylinder is provided with a second fixing through hole that communicates with the first fixing through hole, and the second fixing through hole is symmetrically arranged along the central axis of the third connecting cylinder.

[0016] The tooling head for picking up micro gears provided in this embodiment of the utility model has at least one of the following technical effects: This application provides a tooling head for picking up micro gears. A columnar body protrudes from one end of the tooling head base, and fixing through holes are provided on a second connecting frustum and a third connecting cylinder. The driving component of the picking device is connected and fixed to the tooling head, enabling the picking device to control the tooling head. A first cross groove is provided at the axis of the micro gear picking column, dividing the front end of the column into four identical and separate sector-shaped columns. When the micro gear picking column contacts the inner hole of the micro gear, the sector-shaped columns undergo elastic deformation converging towards the axis, creating elastic stress on the inner hole of the micro gear, thus achieving elastic fixation of the micro gear by the picking column. A second cross groove, which is a cylindrical groove and communicates with the first cross groove, forms an arc-shaped contact surface between the sector-shaped columns and the rear end of the micro gear picking column, preventing excessive concentration of elastic stress. By setting a first conical surface on the sector-shaped column, the inner hole of the micro gear is guided to contact the micro gear ejector post; by setting a sector-shaped groove and a second conical surface on the sector-shaped column, the difficulty of generating elastic deformation of the sector-shaped column is reduced. By setting a tooling head base including a first connecting cylinder, a first connecting frustum, a second connecting cylinder, a second connecting frustum, and a third connecting cylinder, smooth connection control from the end of the column to the end of the micro gear ejector post is achieved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a tooling head for picking up micro gears according to the present invention.

[0019] Figure 2 This is a schematic diagram of the cylindrical body of a tooling head for picking up micro gears according to the present invention.

[0020] Figure 3a This is a first view of a micro gear ejector pin of a tooling head for picking up micro gears according to the present invention.

[0021] Figure 3b This is a second view of the micro gear ejector pin of a tooling head for picking up micro gears according to the present invention.

[0022] 1. Tooling head base; 2. Columnar body; 3. Micro gear ejector post; 4. First connecting cylinder; 5. First connecting frustum; 6. Second connecting cylinder; 7. Second connecting frustum; 8. Third connecting cylinder; 201. Positioning hole; 301. First cross groove; 302. Sector-shaped cylinder; 303. Sector-shaped groove; 304. First conical surface; 305. Second conical surface; 306. Quarter-circular annular surface; 307. Second cross groove; 701. First fixing through hole; 801. Second fixing through hole. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not 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.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0027] In specific embodiments of this utility model, such as Figure 1As shown, a tooling head for picking up micro gears is provided, including a tooling head base 1. A columnar body 2 protrudes from one end of the tooling head base 1 and is used for positioning and connecting with a driving component. A micro gear ejector post 3 is provided at the other end of the tooling head base 1 and is used for contacting and fixing with the inner hole of the micro gear. A first connecting cylinder 4, a first connecting frustum 5, a second connecting cylinder 6, a second connecting frustum 7, and a third connecting cylinder 8 are sequentially arranged between the micro gear ejector post 3 and the columnar body 1.

[0028] Preferred, refer to Figure 1 The base radius of the micro gear ejector column 3 is smaller than that of the base radius of the first connecting cylinder 4; the base radius of the first connecting cylinder 4 is the same as the upper base radius of the first connecting frustum 5; the upper base radius of the first connecting frustum 5 is smaller than that of the lower base radius of the first connecting frustum 5, and the lower base radius of the first connecting frustum 5 is the same as the base radius of the second connecting cylinder 6, the upper base radius of the second connecting frustum 7, and the base radius of the column 2; the upper base radius of the second connecting frustum 7 is smaller than that of the lower base radius of the second connecting frustum 7, and the lower base radius of the second connecting frustum 7 is the same as that of the third connecting cylinder. By sequentially connecting the first connecting cylinder 4, the first connecting frustum 5, the second connecting cylinder 6, the second connecting frustum 7, and the third connecting cylinder 8, a connection and fixing system (i.e., tooling head base 1) is formed between the micro gear ejector column 3 and the column 1, from large to small and from coarse to fine, which facilitates smooth connection control of the micro gear ejector column 3.

[0029] Preferred, refer to Figure 1 The second connecting frustum 7 is provided with a plurality of first fixing through holes 701. In a specific embodiment of the present invention, four first fixing through holes 701 are preferably provided. The four first fixing through holes 701 are symmetrically arranged along the central axis of the second connecting frustum 7, and the first fixing through holes 701 penetrate the lower bottom surface and the frustum surface of the second connecting frustum 7. The third connecting cylinder 8 is provided with a plurality of second fixing through holes 801 that communicate with the first fixing through holes 701. In a specific embodiment of the present invention, four second fixing through holes 801 are preferably provided. The four second fixing through holes 801 are symmetrically arranged along the central axis of the third connecting cylinder 8, and the second fixing through holes 801 penetrate the two bottom surfaces of the third connecting cylinder 8. Bolts pass through the first fixing through holes 701 and the second fixing through holes 801 and are threadedly fixed to the drive component of the material handling device. The nut is restricted outside the first fixing through hole 701, thereby achieving the first layer of fixing between the tooling head and the drive component.

[0030] Reference Figure 2In a specific embodiment of this utility model, the columnar body 2 is preferably a cylinder. A positioning hole 201 is provided at the axis of the columnar body 2. The positioning hole 201 cooperates with the positioning pin of the driving component to achieve a second fixation between the tooling head and the driving component. Through the double fixation of the positioning hole 201, the first fixing through hole 701 and the second fixing through hole 801, the shaking and offset when the driving component drives the tooling head can be effectively reduced.

[0031] Reference Figure 3a and Figure 3b The micro gear ejector post 3 is a cylindrical structure. A first cross groove 301 is recessed at the axis of the micro gear ejector post 3 towards the tooling head base. The first cross groove 301 is a square column groove. The groove depth of the first cross groove 301 is a first length. The first cross groove 301 divides the front end of the micro gear ejector post into four fan-shaped columns 302 of the same size and separated from each other. When the micro gear ejector post 3 contacts the inner hole of the micro gear, the fan-shaped columns 302 generate elastic deformation that converges towards the central axis of the micro gear ejector post 3, forming elastic stress on the inner hole of the micro gear, thereby realizing the elastic fixation of the micro gear ejector post 3 on the micro gear.

[0032] Preferred, refer to Figure 3a The apex of the four sector-shaped pillars 302 is machined towards the tool head base 1 to form four sector-shaped grooves 303 of the same size, and the groove depth of the sector-shaped grooves 303 is the second length; the groove walls of the sector-shaped grooves 303 are machined outward to form four second conical surfaces 305 of the same size, and the arc side surfaces of the four sector-shaped pillars 302 are machined towards the apex to form four first conical surfaces 304 of the same size, guiding the inner hole of the micro gear to contact the micro gear ejector post; a quarter-circular annular surface 306 is left between the first conical surface 304 and the second conical surface 305.

[0033] Preferably, the second length is less than the first length; the first length is less than the length of the micro gear ejector post. By setting the fan-shaped groove 303, the second conical surface 305 and the first cross groove 301, the thickness of the fan-shaped post 302 gradually increases from the top to the bottom. The top of the fan-shaped post 302 is more likely to generate elastic deformation, and the fan-shaped post 302 shows an increasing trend in the difficulty of elastic deformation from the top to the bottom. When the inner hole of the micro gear contacts the micro gear ejector post, as the contact position of the inner hole of the micro gear on the peripheral side of the micro gear ejector post continues to deepen, the difficulty of elastic deformation increases, and the elastic stress generated by the same elastic deformation continues to increase. The micro gear can easily find the balance critical point between elastic stress and stable fit, thereby reducing the pressure of elastic stress on the micro gear while achieving a stable elastic fit between the micro gear and the micro gear ejector post.

[0034] Reference Figure 3bThe bottom of the first cross groove 301 is provided with a second cross groove 307 facing the tool head base 1. In a specific embodiment of this utility model, the type of the second cross groove is preferably a cylindrical groove. The first cross groove 301 and the second cross groove 307 are interconnected, so that the bottom end of the fan-shaped column 302 and the micro gear push column 3 forms an arc-shaped contact surface, avoiding excessive concentration of elastic stress.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling head for picking up micro gears, comprising a tooling head base, characterized in that, One end of the tooling head base has a protruding columnar body, and the other end of the tooling head base has a micro gear ejector post. The micro gear ejector post has a cylindrical structure. At the axis of the micro gear ejector post, a first cross groove is recessed towards the tooling head base. The groove depth of the first cross groove is a first length. The first cross groove divides the front end of the micro gear ejector post into four fan-shaped columns of the same size and separated from each other. The apex of the four fan-shaped columns is machined towards the tooling head base to form four fan-shaped grooves of the same size. The groove depth of the fan-shaped grooves is a second length. The bottom of the first cross groove is provided with a second cross groove facing the tool head base, and the first cross groove and the second cross groove are interconnected.

2. The tooling head for picking up micro gears according to claim 1, characterized in that, The arc-shaped sides of the four sector-shaped cylinders are turned towards the apex to form four first conical surfaces of the same size.

3. A tooling head for picking up micro gears according to claim 2, characterized in that, The walls of the fan-shaped groove are machined outward to form four second conical surfaces of the same size.

4. A tooling head for picking up micro gears according to claim 3, characterized in that, A quarter-circular annular surface is provided between the first conical surface and the second conical surface.

5. A tooling head for picking up micro gears according to claim 1, characterized in that, The first cross groove is a square column groove; the second cross groove is a cylindrical groove.

6. A tooling head for picking up micro gears according to claim 1, characterized in that, The second length is less than the first length; the first length is less than the length of the micro gear ejector pin.

7. A tooling head for picking up micro gears according to claim 1, characterized in that, A first connecting cylinder, a first connecting frustum, a second connecting cylinder, a second connecting frustum, and a third connecting cylinder are sequentially arranged between the micro gear ejector and the columnar body.

8. A tooling head for picking up micro gears according to claim 7, characterized in that, The base radius of the micro gear ejector column is smaller than the base radius of the first connecting cylinder; the base radius of the first connecting cylinder is the same as the upper base radius of the first connecting frustum; the lower base radius of the first connecting frustum is the same as the base radius of the second connecting cylinder, the upper base radius of the second connecting frustum, and the base radius of the columnar body; the lower base radius of the second connecting frustum is the same as the base radius of the third connecting cylinder.

9. A tooling head for picking up micro gears according to claim 7, characterized in that, The second connecting platform is provided with a first fixing through hole, which is symmetrically arranged along the central axis of the second connecting platform.

10. A tooling head for picking up micro gears according to claim 9, characterized in that, The third connecting cylinder is provided with a second fixing through hole that communicates with the first fixing through hole. The second fixing through hole is symmetrically arranged along the central axis of the third connecting cylinder.

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