Auxiliary positioning device for chamfered workpiece

Abstract

The utility model relates to the technical field of vehicle workpiece machining, and discloses a chamfered workpiece auxiliary positioning device which comprises a base, a workpiece frame arranged at the top of the base and used for clamping a workpiece body, and a positioning assembly arranged at the bottom of the workpiece frame and used for positioning the top workpiece body. The positioning assembly comprises a support piece fixedly connected with the workpiece frame, an air cylinder arranged on the support piece, an output rod which is embedded in the air cylinder and extends out towards the side close to or away from the gear part, and a positioning piece which is arranged on the side, away from the air cylinder, of the output rod and abuts against the gear part. The air cylinder pushes the output rod to drive the positioning piece on the top to move in the direction close to the gear part, the top end of the positioning piece is embedded into a tooth groove of the gear part at will, positioning of a workpiece body is achieved, the smoothness of the tooth finding process is improved, and the top end of the positioning piece is made of nylon, so that in the process of making contact with the surface of the gear part, the tooth finding precision is improved. And the risk of crushing the tooth surface is avoided, and different tooth space gaps on the gear part can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of vehicle workpiece processing technology, and in particular to an auxiliary positioning device for chamfered workpieces. Background Technology

[0002] Chamfering refers to the process of beveling the outer or inner right angles of a workpiece to make its edges rounded and smooth. The main purpose of chamfering is to avoid stress concentration, prevent finger scratches, improve the aesthetics and safety of the workpiece, and extend its service life.

[0003] The gear machining process requires chamfering the workpiece after hobbing. This is done to prevent small bumps from causing tooth surface bulges and to reduce stress concentration during quenching. The actual principle of chamfering is that the workpiece meshes with the cutting tool, using the tool to press against the tooth profiles at both ends of the workpiece to blunt the sharp edges. Therefore, the gear tooth grooves and tooth tips must be in a mating state.

[0004] The current chamfering machine uses a regular motor for its drive shaft, which lacks indexing functionality. Furthermore, the workpiece position changes each time it is manually loaded. It's impossible to guarantee that the tooth groove and tooth tip are in the correct state every time, resulting in poor positioning and guiding. Under these operating conditions, the chamfering machine detects whether the tooth tip and tooth groove are properly engaged by controlling pressure and displacement. If they are, it directly jumps to the machining program, and the machined part is qualified. Otherwise, it starts the tooth-finding program. Under pressure and displacement control, the program detects the tooth tip, then the workpiece spindle rotates for 0.5 seconds, and it checks again to see if the tooth tip and tooth groove are properly engaged. This results in a protrusion being pressed onto the workpiece tooth tip, increasing the tooth-finding time and affecting the machining cycle time. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide an auxiliary positioning device for chamfered workpieces, which aims to solve the problems of poor positioning and guiding effect of existing chamfering machines, increased tooth finding time to adapt to the workpiece body, and affected processing cycle.

[0006] This utility model provides an auxiliary positioning device for chamfered workpieces, including a base, a workpiece holder disposed on the top of the base for clamping the workpiece body, and a positioning component disposed at the bottom of the workpiece holder for positioning the workpiece body on top.

[0007] The workpiece body includes a gear portion perpendicular to the positioning component, a middle section portion, and a front section portion extending outward sequentially along the axial direction of the gear portion;

[0008] The positioning assembly includes a support member fixedly connected to the workpiece holder, a cylinder disposed on the support member, an output rod embedded in the cylinder extending toward or away from the gear portion, and a positioning member disposed on the side of the output rod away from the cylinder and abutting against the gear portion.

[0009] As described above, the cylinder pushes the output rod to move the top positioning component closer to the gear, allowing the top of the positioning component to be arbitrarily embedded in the tooth groove of the gear, thus positioning the workpiece body and improving the smoothness of the tooth finding process. Furthermore, the top of the positioning component is made of nylon, which prevents damage to the tooth surface during contact with the gear body. During contact with the outer surface of the gear body, it can adapt to different tooth groove gaps and conform to its shape deformation to fully fit the tooth groove, ensuring the stability of the contact area between the positioning rod and the gear body. This solves the problems of poor positioning and guiding effect in current chamfering machines, increased tooth finding time to adapt to the workpiece body, and reduced processing cycle time.

[0010] In addition, the chamfered workpiece auxiliary positioning device proposed according to the embodiments of this utility model may also have the following additional technical features:

[0011] Furthermore, the workpiece holder includes a first fixing frame fixedly connected to the positioning component, a second fixing frame disposed opposite to the first fixing frame, and a fixing assembly embedded between the first fixing frame and the second fixing frame for fixing the workpiece body.

[0012] Furthermore, the fixing assembly includes a first positioning end movably embedded in the first fixing frame on the side closer to the second fixing frame, and a second positioning end movably embedded in the second fixing frame on the side closer to the first fixing frame.

[0013] Furthermore, the first positioning end is embedded along the axial direction of the gear portion, and the second positioning end is embedded along the axial direction of the front section portion.

[0014] Furthermore, the support member includes an assembly frame fixedly connected to the first fixed frame, and a sliding frame at least partially embedded in the assembly frame.

[0015] Furthermore, the assembly frame is provided with at least two grooves for accommodating the sliding frame, so that the height of the sliding frame can be adjusted along the groove trajectory.

[0016] Furthermore, the positioning element includes a guide sleeve fixedly connected to the output rod, an elastic element embedded in the guide sleeve on the side away from the output rod, and a positioning top rod disposed on the side of the elastic element away from the guide sleeve.

[0017] Furthermore, the positioning rod is a cone shape with an outer diameter that gradually increases from the side closest to the gear part to the side furthest away, and the positioning rod is made of nylon. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an auxiliary positioning device for chamfered workpieces proposed in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a chamfered workpiece auxiliary positioning device and a workpiece body proposed in an embodiment of this utility model;

[0020] Figure 3 This is a partial structural diagram of the positioning component in an auxiliary positioning device for chamfered workpieces proposed in an embodiment of this utility model;

[0021] Figure 4 This is a partial structural diagram of the positioning component and the workpiece body in an auxiliary positioning device for chamfered workpieces proposed in this embodiment of the utility model.

[0022] Figure 5 This is a partial structural diagram of the positioning component and the workpiece body in an auxiliary positioning device for chamfered workpieces proposed in this embodiment of the present invention.

[0023] Explanation of key component symbols:

[0024]

[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1 to 5 The image shows an auxiliary positioning device for chamfered workpieces in an embodiment of this utility model. It includes a base 1, a workpiece holder 2 disposed on the top of the base 1 for clamping the workpiece body 3, and a positioning component 4 disposed on the bottom of the workpiece holder 2 for positioning the top workpiece body 3. The workpiece body 3 includes a gear portion 33 perpendicular to the positioning component 4, a middle section portion 31 and a front section portion 32 extending outward along the axial direction of the gear portion 33. The positioning component 4 includes a support member fixedly connected to the workpiece holder 2, a cylinder 43 disposed on the support member, an output rod 44 embedded in the cylinder 43 extending toward or away from the gear portion 33, and a positioning member disposed on the side of the output rod 44 away from the cylinder 43 and abutting against the gear portion 33.

[0030] Furthermore, the workpiece holder 2 includes a first fixing frame 21 fixedly connected to the positioning assembly 4, a second fixing frame 23 disposed opposite to the first fixing frame 21, and a fixing assembly embedded between the first fixing frame 21 and the second fixing frame 23 for fixing the workpiece body 3. The fixing assembly includes a first positioning end 22 movably embedded in the first fixing frame 21 on the side closer to the second fixing frame 23, and a second positioning end 24 movably embedded in the second fixing frame 23 on the side closer to the first fixing frame 21. The first positioning end 22 is embedded along the axial direction of the gear portion 33, and the second positioning end 24 is embedded along the axial direction of the front section portion 32. In some optional embodiments, for the first positioning end 22... The design of end 22 and the second positioning end 24 can also be a chamfering cutter for chamfering both ends of the workpiece body 3 along the axial direction. Furthermore, drive motors for the first positioning end 22 and the second positioning end 24 of the acne cream can be mounted on the first fixed frame 21 and the second fixed frame 23 respectively, so that the first positioning end 22 and the second positioning end 24, while having a clamping effect on the workpiece body 3, can directly perform grinding and chamfering operations along both ends of the workpiece body 3 along the axial direction. The support component includes an assembly frame 41 fixedly connected to the first fixed frame 21, and a sliding frame 42 at least partially embedded in the assembly frame 41. The assembly frame 41 has at least two grooves for accommodating the sliding frame 42. Figure 5As shown, the assembly frame 41 and the sliding frame 42 can be fixedly connected by bolts so that the height of the sliding frame 42 can be adjusted along the slide track to achieve the purpose of adjusting the distance between the positioning component and the gear part 33. It can be adapted to workpiece bodies 3 with different outer diameters of the gear part 33 for adjustment operations. The positioning component includes a guide sleeve 45 fixedly connected to the output rod 33, an elastic component 46 embedded in the guide sleeve 45 on the side away from the output rod 44, and a positioning top rod 47 provided on the side of the elastic component 46 away from the guide sleeve 45.

[0031] In specific implementation, firstly, the operator can assemble the workpiece body 3 onto the workpiece holder 2 with the gear part 33 facing the first positioning end 22 and the front part 32 facing the second positioning end 24. In some optional embodiments, to ensure that the workpiece holder 2 is compatible with workpieces of different axial lengths, a sliding connection design can be adopted between any one of the first fixed bracket 21 and the second fixed bracket 23 and the base 1, so that one bracket can be adjusted to move closer to or further away from the other bracket, thereby improving the compatibility between the workpiece holder 2 and the workpiece body 3. This can be used to perform clamping operations on workpiece bodies 3 with different axial lengths. When the workpiece body 3 is mounted on the workpiece holder 2 for chamfering operations, it can be positioned... Component 4 performs a positioning operation on the workpiece body 3 to prevent the workpiece body 3 from rotating along the axial direction of the first positioning end 22 or the second positioning end 24 during the chamfering process. This would reduce the chamfering accuracy of the workpiece body 3 or decrease the friction between the axial end face of the workpiece body and the cutting head during the rotation, thereby reducing the chamfering efficiency. Specifically, the operator can control the cylinder 43 on the positioning component 4 to open via a controller. In some optional embodiments, the controller can be located on the base 1 at any convenient position for the operator. The controller can be an MCU (Microcontroller Unit). The controller is electrically connected to the chamfered workpiece auxiliary positioning device via a microcontroller unit (MCU) chip. This electrical connection includes both wired and wireless connections. Wireless connections include, but are not limited to, Bluetooth, WiFi, IF radio frequency, and Zigbee. Wired connections include, but are not limited to, a USB line that connects the chamfered workpiece auxiliary positioning device to the controller. This allows the cylinder 43 to push the output rod 44, causing the top positioning component to move towards the gear part 33. This allows the positioning rod 47 to be arbitrarily embedded in the tooth groove of the gear part 33, thus positioning the workpiece body 3. Furthermore, the positioning rod 47 can be made of nylon or a high-hardness rubber material to prevent damage to the tooth surface during contact with the gear part 33. The entire device eliminates the need for the tooth-finding process of the original chamfering machine. The new chamfering workpiece auxiliary positioning device achieves the tooth-finding function while feeding the workpiece. It can be understood that when the positioning rod 47 approaches the surface of the gear part 33, it can automatically find the tooth by fitting against the surface. It can also fit with any tooth groove without causing wear or burrs on the surface of the gear part 33. If the resistance is insufficient, the operator only needs to control the cylinder 43 to adjust the gap between the positioning rod 47 and the gear part 33. In addition, due to the material properties of the positioning rod 47, it can be adapted to different tooth groove gaps on the outer surface of the gear part 33 to fully fit with the tooth groove, further ensuring the stability of the contact area between the positioning rod 47 and the gear part 33.

[0032] In summary, by using cylinder 43 to push output rod 44, the top positioning component moves towards the gear part 33, allowing the top of the positioning component to be arbitrarily embedded in the tooth groove of gear part 33, thus achieving positioning of the workpiece body 3 and improving the smoothness of the tooth finding process. Furthermore, the top of the positioning component is made of nylon, which prevents the risk of damaging the tooth surface during contact with the surface of gear part 33. During the contact with the outer surface of gear part 33, it can adapt to different tooth groove gaps on gear part 33 and conform to its shape deformation to fully fit the tooth groove, ensuring the stability of the contact point between positioning rod 47 and gear part 33. This solves the problem of poor positioning and guiding effect of current chamfering machines, which increases the tooth finding time to adapt to the workpiece body and affects the processing cycle.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An auxiliary positioning device for chamfered workpieces, characterized in that, It includes a base, a workpiece holder disposed on the top of the base for holding the workpiece body, and a positioning component disposed at the bottom of the workpiece holder for positioning the workpiece body on top. The workpiece body includes a gear portion perpendicular to the positioning component, a middle section portion, and a front section portion extending outward sequentially along the axial direction of the gear portion; The positioning assembly includes a support member fixedly connected to the workpiece holder, a cylinder disposed on the support member, an output rod embedded in the cylinder extending toward or away from the gear portion, and a positioning member disposed on the side of the output rod away from the cylinder and abutting against the gear portion.

2. The chamfered workpiece auxiliary positioning device according to claim 1, characterized in that, The workpiece holder includes a first fixing frame fixedly connected to the positioning component, a second fixing frame disposed opposite to the first fixing frame, and a fixing assembly embedded between the first fixing frame and the second fixing frame for fixing the workpiece body.

3. The chamfered workpiece auxiliary positioning device according to claim 2, characterized in that, The fixing assembly includes a first positioning end movably embedded in the first fixing frame on the side closer to the second fixing frame, and a second positioning end movably embedded in the second fixing frame on the side closer to the first fixing frame.

4. The chamfered workpiece auxiliary positioning device according to claim 3, characterized in that, The first positioning end is embedded along the axial direction of the gear portion, and the second positioning end is embedded along the axial direction of the front section portion.

5. The chamfered workpiece auxiliary positioning device according to claim 4, characterized in that, The support component includes an assembly frame fixedly connected to the first fixed frame, and a sliding frame at least partially embedded in the assembly frame.

6. The chamfered workpiece auxiliary positioning device according to claim 5, characterized in that, The assembly frame has at least two grooves for accommodating the sliding frame, so that the height of the sliding frame can be adjusted along the groove trajectory.

7. The chamfered workpiece auxiliary positioning device according to claim 6, characterized in that, The positioning component includes a guide sleeve fixedly connected to the output rod, an elastic element embedded in the guide sleeve on the side away from the output rod, and a positioning top rod disposed on the side of the elastic element away from the guide sleeve.

8. The chamfered workpiece auxiliary positioning device according to claim 7, characterized in that, The positioning rod is a cone shape with an outer diameter that gradually increases from the side closest to the gear to the side furthest away, and the positioning rod is made of nylon.

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