Gear forging and pressing piece trimming device
By using a combination of airbag and galvanized fluid in the gear forging and compression device, the problems of small contact area and uneven force in the existing device are solved, and more stable gear fixation and higher trimming accuracy are achieved.
Patent Information
- Application Number
- CN202421634117.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The contact area of the existing gear forging parts trimming devices is small, resulting in insufficient fixing force, affecting the dressing effect, and the force of the clamp is uneven, which can easily lead to the deformation or movement of the gear, affecting the processing quality and accuracy.
A gear forging part trimming device including an airbag and a driving component is designed. The airbag is attached to the outer side of the gear by expansion, and uses an electric liquid to transform from liquid to solid state under the action of an electric field, increasing the contact area and fixing stability. At the same time, the bottom of the forging part is adsorbed through a negative pressure state to ensure its stability.
By increasing the contact area and uniform force, the fixing stability of the gear forging parts is improved, the gear deformation or movement is avoided, and the accuracy and quality of the trimming are ensured.
Smart Images
Figure CN223000256U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gear forging processing, in particular to a gear forging trimming device. Background Art
[0002] The trimming of gear forgings refers to a series of processing and treatment processes for gears after forging processing, aiming to improve the dimensional accuracy, surface quality and mechanical properties of gears. Generally, it is necessary to trim the dimensions, surface and tooth profile of gear forgings, which can improve their dimensional accuracy and tooth profile accuracy and ensure the normal operation of gears.
[0003] During the trimming process of gear forgings, it is crucial to ensure the smoothness of the inner side of the gear and remove burrs, which ensures the stability of the gear when installed on the rotating shaft and ultimately affects the operation effect of the entire system. The fixing device for gear forgings in the prior art generally consists of a threaded rod and two clamping plates. When the clamping plates fix the upper and lower surfaces of the gear, in order to enable the grinding piece to extend into the interior of the gear to ensure the operation space of the grinding piece, the contact area between the clamping plate and the gear is small, which leads to the dispersion of the fixing force and small friction force, and may cause the position of the gear to be unstable during the trimming process, affecting the trimming effect. When the clamping plates clamp both sides of the gear, the acting force of the clamping plates on the gear will be concentrated on several teeth. In this way, on the one hand, the acting force of the clamping plates is uneven, which easily causes the deformation or distortion of the gear, affecting its processing quality and accuracy. On the other hand, especially when the gear is trimmed more finely, the gear may move or shake, affecting the accuracy and quality of the trimming.
[0004] Therefore, it is necessary to design a gear forging trimming device to solve the above problems. Summary of the Utility Model
[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a gear forging trimming device.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0007] A gear forging trimming device includes a workbench, an installation frame is fixed on the workbench, a grinding piece for trimming and grinding gear forgings is installed on the installation frame, a fixing ring is fixedly connected to the workbench and is opposite to the grinding piece, a placement groove is arranged inside the fixing ring, an airbag is fixed inside the placement groove, a driving component is arranged inside the workbench, and the driving component is used to control the inflation and deflation of the airbag.
[0008] As a preferred technical solution of the present utility model, the driving assembly includes a cavity provided in the workbench. An electric telescopic rod is fixed inside the cavity. The telescopic end of the electric telescopic rod is fixed with a sliding plate, and the sliding plate is in sealed sliding connection with the cavity. A connecting pipe is communicated with the airbag, and the connecting pipe is communicated with the cavity. There is an electrorheological fluid in the cavity, and the electrorheological fluid is located between the sliding plate and the connecting pipe. The driving assembly further includes a fastener.
[0009] As a preferred technical solution of the present utility model, the fastener includes a plurality of slots provided on the workbench. An adsorption pipe is communicated with the inner side of the cavity. The adsorption pipe and the connecting pipe are respectively located on both sides of the sliding plate. The adsorption pipe is communicated with all the slots.
[0010] As a preferred technical solution of the present utility model, the side wall of the airbag facing the center of the fixed ring is provided with anti-slip lines.
[0011] As a preferred technical solution of the present utility model, all the slots are arranged at equal intervals in the circumferential direction.
[0012] As a preferred technical solution of the present utility model, a sealing gasket is fixed inside the slot, and the sealing gasket is made of rubber.
[0013] The present utility model has the following beneficial effects:
[0014] 1. Increase the contact area: By making the airbag adhere to the outer side of the gear forging, and using the expansion of the airbag to adapt to the shape of the gear forging, the device can fix the forging. Compared with the clamping plate with a smaller contact area in the prior art, this solution can increase the contact area between the device and the forging, and improve the stability of fixation;
[0015] 2. Uniformly distribute the acting force: The acting force of the airbag on the forging can be evenly distributed on the outside of the forging, avoiding the acting force being concentrated on several teeth, which may cause tooth deformation or wear. This can ensure the stability of the gear during the trimming process, and improve the accuracy and quality of trimming;
[0016] 3. Improve stability: Adsorb the bottom of the forging by using the negative pressure state, which improves the fixing stability of the forging, ensures that the forging will not shift or rotate during the trimming process, and makes the trimming effect more consistent and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of a gear forging trimming device proposed by the present utility model;
[0018] Figure 2 is a schematic internal structure diagram of the workbench;
[0019] Figure 3 Schematic structural diagram of the airbag meshing with the gear forging after inflation;
[0020] Figure 4 is Figure 2 Enlarged view of the structure at location A of
[0021] In the figure: 1 workbench, 2 mounting frame, 3 grinding piece, 4 fixing ring, 5 placement groove, 6 airbag, 7 cavity, 8 electric telescopic rod, 9 slide plate, 10 electrorheological fluid, 11 connecting pipe, 12 slotted opening, 13 adsorption pipe, 14 gasket. Specific implementation manner
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0023] Referring to Figures 1-4 , a gear forging trimming device includes a workbench 1, a mounting frame 2 is fixed on the workbench 1, a grinding piece 3 for trimming and grinding the gear forging is installed on the mounting frame 2, a fixing ring 4 is fixedly connected to the workbench 1, and the fixing ring 4 is opposite to the grinding piece 3. A placement groove 5 is provided inside the fixing ring 4, and an airbag 6 is fixed inside the placement groove 5. Anti-slip lines are provided on the side wall of the airbag 6 facing the center of the fixing ring 4, which can increase the friction between the airbag 6 and the gear forging, thereby improving the firmness of the airbag 6 in fixing the forging. A driving component is provided inside the workbench 1, and the driving component is used to control the inflation and deflation of the airbag 6.
[0024] Referring to Figures 2-4, the driving component includes a cavity 7 arranged inside the workbench 1. An electric telescopic rod 8 is fixed inside the cavity 7. A sliding plate 9 is fixed at the telescopic end of the electric telescopic rod 8, and the sliding plate 9 is in sealed sliding connection with the cavity 7. A connecting pipe 11 is communicated with the airbag 6, and the connecting pipe 11 is communicated with the inside of the cavity 7. An electrorheological fluid 10 is arranged inside the cavity 7, and the electrorheological fluid 10 is located between the sliding plate 9 and the connecting pipe 11. It is worth mentioning that the electrorheological fluid 10 is a material that uses an electric field to control the flow properties of a fluid. It is usually composed of tiny particles suspended in a liquid. Its main characteristic is that its rheological properties will change significantly under different electric fields. When an electric field is applied, these tiny particles will generate charges, resulting in changes in their arrangement and orientation in the liquid. This change in arrangement and orientation will cause a change in the flow properties of the electrorheological fluid 10. When the electric field is large enough, the electrorheological fluid 10 can change from a liquid state to a solid state. The internal structure and working principle are both prior arts and will not be elaborated here. The airbag 6 is made of rubber and can isolate the influence of the external electric field on the flow properties of the electrorheological fluid 10. In summary, by setting the airbag 6 and the electrorheological fluid 10, when no electric field is applied, the two can deform along with the shape of the outer side of the gear forging. After applying the electric field, the electrorheological fluid 10 changes to a solid state and meshes with the forging. This can increase the contact area between the device and the forging, ensure the firm fixation of the device to the forging, thereby improving the trimming accuracy, and at the same time prevent the force of the device on the forging from being concentrated, resulting in tooth wear. The driving component also includes a fastener.
[0025] Referring to Figure 2 and Figure 4 , the fastener includes a number of slots 12 arranged on the workbench 1. An adsorption pipe 13 is communicated with the inner side of the cavity 7. The adsorption pipe 13 and the connecting pipe 11 are located on both sides of the sliding plate 9 respectively. The adsorption pipe 13 is communicated with all the slots 12 respectively. All the slots 12 are arranged at equal intervals in the circumferential direction, so that the adsorption effect of the device on the forging can be evenly distributed, ensuring the stability of the fixation of the forging. A sealing gasket 14 is fixed inside the slot 12. The sealing gasket 14 is made of rubber. The sealing gasket 14 can make the forging fit more closely with the workbench 1, thereby ensuring the adsorption effect of the device on the forging.
[0026] The specific working principle of the present utility model is as follows:
[0027] Place the gear forging into the fixed ring 4, start the electric telescopic rod 8. The telescopic end of the electric telescopic rod 8 extends to drive the sliding plate 9 to move, and squeezes the electrorheological fluid 10. The electrorheological fluid 10 enters the airbag 6 through the connecting pipe 11. Subsequently, the airbag 6 expands and deforms along with the shape of the outer side of the gear. In this way, the airbag 6 will be in contact with the outer sides of all the teeth on the gear forging. Then, the staff energizes the airbag 6. Under the action of the electric field, the electrorheological fluid 10 changes from a liquid state to a solid state, making the whole airbag 6 harden. In this way, the engagement between the airbag 6 and the forging can achieve the fixation of the forging. When the grinding part 3 grinds the inner side of the gear forging, the forging will not displace or rotate, and the acting force of the airbag 6 on the forging can be evenly distributed on the outer side of the forging. This increases the contact area of the device with the forging, ensures the stability of the fixation, and at the same time prevents the concentration of the force of the device on the forging from causing deformation or wear of the teeth;
[0028] Further, in the above process, when the electric telescopic rod 8 drives the sliding plate 9 to move, the side of the sliding plate 9 away from the electrorheological fluid 10 is in a negative pressure state, and then sucks the air between the gear forging and the placement groove 5 into the cavity 7, thereby realizing the fixation of the bottom position of the forging. This improves the stability of the device for fixing the forging, and further improves the accuracy and quality of the trimming of the forging.
[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A gear forging finishing device, comprising a workbench (1), characterized in that: A mounting frame (2) is fixed on the workbench (1), a grinding piece (3) for trimming and grinding the gear forging piece is installed on the mounting frame (2), a fixing ring (4) is fixedly connected to the workbench (1), and the fixing ring (4) is directly opposite to the grinding piece (3), a placement groove (5) is provided on the inner side of the fixing ring (4), an airbag (6) is fixed inside the placement groove (5), and a driving component is provided inside the workbench (1), and the driving component is used to control the expansion and contraction of the airbag (6); The driving assembly comprises a cavity (7) arranged in a workbench (1), an electric telescopic rod (8) is fixed inside the cavity (7), a slide plate (9) is fixed at the telescopic end of the electric telescopic rod (8), and the slide plate (9) is sealed and slidably connected to the cavity (7), a connecting pipe (11) is connected to the airbag (6), and the connecting pipe (11) is connected to the cavity (7), an electrorheological fluid (10) is arranged in the cavity (7), and the electrorheological fluid (10) is located between the slide plate (9) and the connecting pipe (11), and the driving assembly also comprises a fastener.
2. A gear forging finishing device according to claim 1, characterized in that: The fastener comprises a plurality of slots (12) arranged on the workbench (1); an adsorption tube (13) is arranged in communication with the inner side of the cavity (7); the adsorption tube (13) and the connecting tube (11) are respectively located on both sides of the slide plate (9); and the adsorption tube (13) is respectively in communication with all the slots (12).
3. A gear forging finishing device according to claim 1, characterized in that: The side wall of the air bag (6) facing the center of the fixed ring (4) is provided with anti-slip grooves.
4. A gear forging finishing device according to claim 2, characterized in that: All the slots (12) are arranged at equal intervals in the circumferential direction.
5. A gear forging finishing device according to claim 4, characterized in that: A sealing gasket (14) is fixed on the inner side of the groove (12), and the sealing gasket (14) is made of rubber.