Thin-walled workpiece machining device
Through the open-close support and clamping positioning mechanism, combined with the elastic polishing wheel set and swing assembly, the local deformation problem during the polishing process of thin-walled parts is solved, efficient and stable thin-walled parts processing is achieved, and product quality and equipment adaptability are improved.
Patent Information
- Application Number
- CN202422229653.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-11
AI Technical Summary
Traditional thin-walled inner ring polishing equipment causes heat unevenness and local deformation due to the relative movement of the clamp and the outer wall of the thin-walled part, and it is difficult to adapt to the processing needs of different sizes, affecting product quality and performance.
The open-closed support mechanism and clamping positioning mechanism are adopted, combined with the elastic polishing wheel set and the swing assembly, to achieve stable clamping and efficient polishing of the inner ring of the thin-walled part. Through the diameter adjustment of the polishing wheel set and the flexibility of the swing assembly, it adapts to the polishing needs of different diameters and reduces local deformation.
It significantly reduces the local deformation of thin-walled parts, improves product quality and processing efficiency, enhances the flexibility of equipment, and adapts to the processing of thin-walled parts of different sizes.
Smart Images
Figure CN223130289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thin-walled part processing, in particular to a thin-walled part processing device. Background Art
[0002] Due to their light weight and compact structure, thin-walled parts are widely used in many fields such as aerospace, automobile manufacturing, and precision instruments. However, the inner ring polishing of tubular thin-walled parts has always been a technical difficulty in the processing process. In traditional technologies, through the cooperation of a rotating fixture and a pressing wheel, although the inner ring can be polished, the relative movement between the pressing wheel and the outer wall of the thin-walled part often causes uneven heat distribution in this area, and local deformation of the thin-walled part due to continuous extrusion, seriously affecting the product quality and service performance. In addition, the flexibility of existing polishing equipment is insufficient, making it difficult to meet the processing requirements of thin-walled parts of different sizes. Content of the Utility Model
[0003] In order to overcome the above-mentioned disadvantages in the background art, the utility model provides a thin-walled part processing device, which realizes stable clamping and efficient polishing during the inner ring polishing of thin-walled parts, effectively avoids local deformation of thin-walled parts, and improves processing efficiency and flexibility at the same time.
[0004] The technical solution of the utility model is as follows: A thin-walled part processing device includes a bracket with a horizontal plane. A vertical through-hole for placing a blank is provided on the horizontal plane. An opening and closing support mechanism is provided at the bottom of the through-hole, and a polishing mechanism and a clamping and positioning mechanism are provided at the top. The polishing mechanism includes an arched support, a vertical cylinder, a bearing, a bushing, a polishing wheel set, and a driving motor. The arched support is arranged on the top of the horizontal plane. The vertical cylinder is arranged at the upper end of the arched support, its piston rod is perpendicular to the horizontal plane downward, and the bearing is arranged at its lower end. The bushing is sleeved outside the bearing. A first gear is provided at the lower end of the bushing. A polishing wheel set with adjustable diameter is arranged outside the bushing. The driving motor is arranged at the lower end of the piston rod of the vertical cylinder. A second gear is provided on the shaft of the driving motor, and the second gear meshes with the first gear.
[0005] As a preferred technical solution of the utility model, the polishing wheel set includes a horizontal cylinder, a ring body, and a polishing belt. At least four horizontal cylinders are arranged circumferentially along the outer circle of the bushing. The tail of the horizontal cylinder is hinged to the outer circle of the bushing, the end of the piston rod of the horizontal cylinder is hinged to the ring body, and the polishing belt is wound around the ring body. Both the ring body and the polishing belt are made of elastic materials. When the piston rod of the horizontal cylinder extends or retracts, it will synchronously drive the diameter of the ring body and the polishing belt to expand or contract.
[0006] As a preferred technical solution of the present utility model, the polishing wheel set includes a horizontal cylinder, an annular body and a polishing belt. At least four horizontal cylinders are circumferentially arranged along the outer circle of the bushing. The tail of the horizontal cylinder is hinged to the outer circle of the bushing. The annular body is composed of a plurality of arc units. The number of arc units is the same as the number of horizontal cylinders. The inner circle of each arc unit is respectively hinged to the end of the piston rod of one of the horizontal cylinders. The polishing belt is wound around the annular body. The polishing belt is made of an elastic material. When the piston rod of the horizontal cylinder extends or retracts, it will synchronously drive the diameter of the annular body and the polishing belt to expand or contract.
[0007] As a preferred technical solution of the present utility model, the clamping and positioning mechanism includes a fixture, a slide rail and slider assembly, and a lead screw assembly. Two fixtures are symmetrically arranged along the through hole. The middle part of the fixture is recessed towards both sides in an arc shape or a V shape. A slide rail and slider assembly is arranged on each side of the fixture. The slide rail is arranged on the bracket. Two sliders are arranged on each slide rail. The two sliders are respectively connected to one of the fixtures. The lead screw assembly includes a lead screw with two threads having opposite helix directions. A lead screw nut is arranged on each of the two lead screws. Each lead screw nut is respectively connected to one of the fixtures adjacent to it; and a servo motor for driving the lead screw to rotate.
[0008] As a preferred technical solution of the present utility model, the recessed position of the fixture is provided with inclined anti-slip strips that form a 45-degree angle with the upper and lower sides of the fixture.
[0009] As a preferred technical solution of the present utility model, the support mechanism includes two straight plates symmetrically arranged at the bottom of the through hole. The two straight plates are respectively connected to one of the lead screw nuts not adjacent to them through a connecting rod. When the two lead screw nuts approach each other, the two straight plates connected to them move away from each other.
[0010] As a preferred technical solution of the present utility model, it further includes a swing assembly, including a bearing kit sleeved on the piston rod of the vertical cylinder, and two symmetrically arranged swing cylinders. The tail of the swing cylinder is hinged to the bearing kit. The piston rod ends of the swing cylinders are respectively hinged to the side wall of the cylinder body of one of the horizontal cylinders.
[0011] As a preferred technical solution of the present utility model, the annular body and the polishing belt are made of polyurethane material.
[0012] The utility model has the following advantages: Through the precise control of the opening and closing support mechanism and the clamping and positioning mechanism, and the elastic design of the polishing wheel set, the clamping force and impact force on the thin-walled part during the polishing process are effectively reduced, the local deformation of the thin-walled part is significantly reduced, and the product quality is improved. The diameter of the polishing wheel set is adjustable, which can quickly adapt to the polishing requirements of the inner rings of thin-walled parts with different diameters, shorten the time for replacing tooling and adjusting equipment, and improve the processing efficiency. The combined use of the elastic polishing belt and the annular body makes the polishing process more uniform and delicate, effectively improving the surface finish and surface quality of the inner ring of the thin-walled part. Brief Description of the Drawings
[0013] Figure 1 is a schematic three-dimensional structure diagram of the utility model.
[0014] Figure 2 is a schematic partial structure diagram of the polishing wheel set of the utility model and an installation schematic diagram of the swinging assembly.
[0015] Figure 3 is a schematic structure diagram of the clamping and positioning mechanism of the utility model.
[0016] Figure 4 is a schematic structure diagram of the support mechanism of the utility model.
[0017] Figure 5 is a schematic partial structure diagram of the polishing wheel set in Embodiment 2 of the utility model.
[0018] Figure 6 is a schematic structure diagram of each arc unit constituting the annular body in Embodiment 2 of the utility model.
[0019] The labels in the figure are: 1 - bracket, 11 - horizontal plane, 12 - through hole, 2 - support mechanism, 21 - straight plate, 22 - connecting rod, 3 - polishing mechanism, 31 - arched support, 32 - vertical cylinder, 33 - bearing, 34 - bushing, 35 - polishing wheel set, 351 - horizontal cylinder, 352 - annular body, 353 - polishing belt, 36 - gear one, 37 - drive motor, 38 - gear two, 4 - clamping and positioning mechanism, 41 - fixture, 42 - slide rail slider assembly, 421 - slide rail, 422 - slider, 43 - lead screw assembly, 431 - lead screw, 432 - lead screw nut, 433 - servo motor, 5 - inclined anti-slip strip, 6 - bearing kit, 61 - swinging cylinder. Detailed Description of the Preferred Embodiments
[0020] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present utility model are not limited. Those skilled in the art should understand that the above embodiments do not limit the present utility model in any form. Any technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present utility model.
[0021] Embodiment 1
[0022] As Figure 1 shown in the thin-walled part processing device, which includes a bracket 1 with a horizontal plane 11. Legs are provided on both sides of the bracket 1. A vertical through hole 12 for placing a blank is provided on the horizontal plane 11. Refer to Figure 3 , the aperture of the through hole 12 is larger than the diameter of the blank to be processed. An opening and closing support mechanism 2 is provided at the bottom of the through hole 12. The blank is placed in the through hole 12, and the bottom is placed on the support mechanism 2. The axis of the blank is parallel to the axis of the through hole 12. A polishing mechanism 3 and a clamping and positioning mechanism 4 are provided at the top of the through hole 12. The clamping and positioning mechanism 4 is used to clamp the blank and calibrate its position so that the axis of the blank is close to coinciding with the axis of the through hole 12. The polishing mechanism 3 extends into the blank to complete the inner wall polishing of the blank. As Figure 2 shown, among them, the polishing mechanism 3 includes an arched support 31, a vertical cylinder 32, a bearing 33, a bushing 34, a polishing wheel set 35 and a driving motor 37. The arched support 31 is arranged on the top of the horizontal plane 11. The vertical cylinder 32 is arranged at the upper end of the arched support 31. The piston rod of the vertical cylinder 32 faces downward and is perpendicular to the horizontal plane 11. A bearing 33 is arranged at the lower end of the piston rod of the vertical cylinder 32. The inner ring of the bearing 33 is fixedly connected to the piston rod of the vertical cylinder 32. The outer ring of the bearing 33 is sleeved with a bushing 34. The inner ring of the bushing 34 is fixedly connected to the outer ring of the bearing 33. A polishing wheel set 35 with an adjustable diameter is sleeved on the outer ring of the bushing 34. The radius of the polishing wheel set 35 is reduced before entering the blank and then enlarged after entering the blank so that it can contact the inner wall of the blank. The polishing wheel set 35 is driven by a driving motor 37. A gear one 36 is provided at the lower end of the bushing 34, and a gear two 38 is provided on the shaft driven by the motor. The gear two 38 meshes with the gear one 36. The driving motor 37 is arranged at the lower end of the piston rod of the vertical cylinder 32. When the driving motor 37 is started, it drives the bushing 34 to rotate through the transmission of the gear two 38 and the gear one 36, and the bushing 34 drives the polishing wheel set 35 to rotate.
[0023] For traditional tubular thin-walled parts, the inner wall polishing is usually to place the blank horizontally on a rotatable fixture. After the polishing assembly extends into the blank, the fixture drives the blank to rotate to achieve full polishing of the inner wall surface. However, when the fixture clamps and rotates the blank, the blank is extremely easy to be deformed under pressure, resulting in the influence on its accuracy. In this device, the processing idea of keeping the blank stationary is adopted, which fundamentally solves the problem of the rotating blank being squeezed and deformed. The polishing wheel set 35 of this device adapts to the inner diameter of the blank by changing the size of the diameter.
[0024] In this embodiment, the polishing wheel set 35 of the device is composed of a horizontal cylinder 351, an annular body 352, and a polishing belt 353. At least four horizontal cylinders 351 are circumferentially arranged along the outer circumference of the sleeve 34. The tail of each horizontal cylinder 351 is hinged to the outer circumference of the sleeve 34. The end of the piston rod of each horizontal cylinder 351 is hinged to the inner circumference of the annular body 352. An annular inner recess is provided in the outer circumference of the annular body 352 in the radial direction. The polishing belt 353 is wound around the annular body 352 and embedded in the inner recess. Both the annular body 352 and the polishing belt 353 of the device are made of elastic materials. Specifically, they can be made of polyurethane elastomer or synthetic rubber. When the piston rod of the horizontal cylinder 351 extends or retracts, it will synchronously drive the diameter of the annular body 352 and the polishing belt 353 to expand or contract.
[0025] In addition, it should be particularly noted that, in addition to the fixed manner, there is another swinging setting manner for the polishing wheel set 35. Specifically, refer to Figure 1 and Figure 2 , the device further includes a swinging assembly. The swinging assembly includes a bearing 33 kit, and the bearing kit 6 is sleeved on the piston rod of the vertical cylinder 32; and two symmetrically arranged swinging cylinders 61. The two swinging cylinders 61 are symmetric about the axis of the bearing kit 6 or the axis of the piston rod of the vertical cylinder 32. The tail of the casing of the swinging cylinder 61 is respectively hinged to the side of the bearing kit 6, and the end of the piston rod of the swinging cylinder 61 is respectively hinged to the side wall of the cylinder body of one of the horizontal cylinders 351. Specifically, refer to Figure 1 , the piston rods of the two swinging cylinders 61 act on the horizontal cylinder 351, and further drive the whole of the annular body 352 and the polishing belt 353 to tilt through expansion and contraction. When the piston rod of one of the swinging cylinders 61 extends, the piston rod of the other swinging cylinder 61 contracts. By setting the swinging assembly, the flexibility of the polishing wheel set 35 can be ensured. On the one hand, it can tilt before entering the blank to reduce its projected area. On the other hand, the polishing quality can be improved through swinging.
[0026] As Figure 3As shown, the clamping and positioning mechanism 4 includes a fixture 41, a slide rail and slider assembly 42, and a lead screw assembly 43. Two fixtures 41 are symmetrically arranged along the through hole 12. In this embodiment, the fixture 41 is arranged on the upper side of the horizontal plane 11 of the bracket 1. The middle of the fixture 41 is recessed towards both sides in an arc shape or a V shape. A slide rail and slider assembly 42 is arranged on each side of the fixture 41. The slide rail 421 is arranged on the upper side of the horizontal plane 11 of the bracket 1. Two sliders 422 are arranged on each slide rail 421, and the two sliders 422 are respectively fixedly connected to one of the fixtures 41. The lead screw assembly 43 is arranged on the bracket 1. The lead screw assembly 43 includes a lead screw 431 with two opposite helix directions, and two lead screw nuts arranged on the two lead screws 431 respectively. Each lead screw nut is respectively connected to one of the adjacent fixtures 41 or sliders 422; A servo motor 433 for driving the lead screw 431 to rotate is also included.
[0027] The servo motor 433 is connected to the lead screw 431 through a pulley or a gear. The servo motor 433 drives the lead screw 431 to rotate, driving the two lead screw nuts to approach or move away from each other, and then driving the fixture 41 to perform the clamping or loosening operation. In addition, an inclined anti-slip strip 5 with an angle of 45 degrees with respect to the upper and lower sides of the fixture 41 is arranged at the recessed position of the fixture 41. The inclined anti-slip strip 5 can not only achieve the clamping function, but also prevent the blank from deforming.
[0028] As Figure 4 shown, the support mechanism 2 includes two straight plates 21 symmetrically arranged at the bottom of the through hole 12. The two straight plates 21 are respectively connected to one of the lead screw nuts not adjacent to them through a connecting rod 22. When the two lead screw nuts approach each other, the two straight plates 21 connected to them move away from each other. Through the above design, during polishing, the straight plates 21 can be prevented from interfering with the polishing mechanism 3. When the two lead screw nuts move towards the middle, the clamping and positioning mechanism 4 gradually clamps the blank. Synchronously, the two straight plates 21 gradually move away to expose the bottom surface of the blank. When the polishing mechanism 3 processes, it can pass through the bottom of the blank for comprehensive polishing.
[0029] Embodiment 2
[0030] This embodiment is basically the same as Embodiment 1, except that the structure of the polishing wheel set 35 has changed. As Figures 5-6As shown in the figure, specifically, the polishing wheel set 35 in this embodiment includes a horizontal cylinder 351, an annular body 352, and a polishing belt 353. At least four horizontal cylinders 351 are circumferentially arranged along the outer circumference of the bushing 34. The tail of the horizontal cylinder 351 is hinged to the outer circumference of the bushing 34. The annular body 352 is composed of a plurality of arc-shaped units, and the number of arc-shaped units is the same as the number of horizontal cylinders 351. The inner circle of each arc-shaped unit is respectively hinged to the end of the piston rod of one of the horizontal cylinders 351. An annular concave is provided on the outer circle of the annular body 352 in the radial direction. The polishing belt 353 is wound around the annular body 352 and embedded in the concave. The polishing belt 353 of this device is made of an elastic material. Specifically, it can be made of polyurethane elastomer or synthetic rubber material. When the piston rod of the horizontal cylinder 351 extends or retracts, it will synchronously drive the diameter of the annular body 352 and the polishing belt 353 to expand or contract. The principle is roughly the same as that in Embodiment 1, so it will not be elaborated here.
[0031] The electrical equipment and components involved in this equipment are all integrally controlled by a PLC, including controlling the start and stop, rotation speed, and rotation direction of each motor used in this equipment, the start and stop, telescopic length, time, and telescopic frequency of each cylinder, etc. This is the prior art and will not be described in detail here.
Claims
1. A thin-walled part processing device, characterized in that, It includes a bracket (1) with a horizontal plane (11). A vertical through-hole (12) for placing a blank is provided on the horizontal plane (11). An opening and closing support mechanism (2) is provided at the bottom of the through-hole (12), and a polishing mechanism (3) and a clamping and positioning mechanism (4) are provided at the top. The polishing mechanism (3) includes an arched support (31), a vertical cylinder (32), a bearing (33), a bushing (34), a polishing wheel set (35), and a driving motor (37). The arched support (31) is arranged at the top of the horizontal plane (11). The vertical cylinder (32) is arranged at the upper end of the arched support (31), its piston rod faces downward and is perpendicular to the horizontal plane (11), and the bearing (33) is arranged at the lower end. The outer ring of the bearing (33) is sleeved with the bushing (34). A first gear (36) is provided at the lower end of the bushing (34). A polishing wheel set (35) with an adjustable diameter is sleeved on the outer ring of the bushing (34). The driving motor (37) is arranged at the lower end of the piston rod of the vertical cylinder (32). A second gear (38) is provided on the shaft of the driving motor (37), and the second gear (38) meshes with the first gear (36).
2. The thin-walled part processing device according to claim 1, characterized in that, The polishing wheel set (35) includes a horizontal cylinder (351), a ring body (352), and a polishing belt (353). At least four horizontal cylinders (351) are circumferentially arranged along the outer ring of the bushing (34). The tail of the horizontal cylinder (351) is hinged to the outer ring of the bushing (34). The end of the piston rod of the horizontal cylinder (351) is hinged to the ring body (352). The polishing belt (353) is wound around the ring body (352). Both the ring body (352) and the polishing belt (353) are made of elastic materials. When the piston rod of the horizontal cylinder (351) extends or retracts, it will synchronously drive the ring body (352) and the polishing belt (353) to expand or contract in diameter.
3. The thin-walled part processing device according to claim 1, characterized in that, The polishing wheel set (35) includes a horizontal cylinder (351), a ring body (352), and a polishing belt (353). At least four horizontal cylinders (351) are circumferentially arranged along the outer ring of the bushing (34). The tail of the horizontal cylinder (351) is hinged to the outer ring of the bushing (34). The ring body (352) is composed of a plurality of arc-shaped units. The number of arc-shaped units is the same as the number of horizontal cylinders (351). The inner ring of each arc-shaped unit is respectively hinged to the end of the piston rod of one of the horizontal cylinders (351). The polishing belt (353) is wound around the ring body (352). The polishing belt (353) is made of elastic material. When the piston rod of the horizontal cylinder (351) extends or retracts, it will synchronously drive the ring body (352) and the polishing belt (353) to expand or contract in diameter.
4. The thin-walled part processing device according to claim 1, characterized in that The clamping and positioning mechanism (4) includes a fixture (41), a slide rail and slider assembly (42), and a lead screw assembly (43). Two fixtures (41) are symmetrically arranged along the through hole (12). The middle part of the fixture (41) is recessed towards both sides in an arc shape or a V shape. A slide rail and slider assembly (42) is arranged on each side of the fixture (41). The slide rail (421) is arranged on the bracket (1). Two sliders (422) are arranged on each slide rail (421), and the two sliders (422) are respectively connected to one of the fixtures (41). The lead screw assembly (43) includes a lead screw (431) with two sections of threads having opposite helix directions. A lead screw nut (432) is arranged on each of the two sections of the lead screw (431), and each lead screw nut (432) is respectively connected to one of the fixtures (41) close to it; and a servo motor (433) for driving the rotation of the lead screw (431).
5. The thin-walled part processing device according to claim 4, characterized in that An inclined anti-slip strip (5) at a 45-degree angle to the upper and lower sides of the fixture (41) is arranged at the recessed position of the fixture (41).
6. The thin-walled part processing device according to claim 4, wherein, The support mechanism (2) includes two straight plates (21) symmetrically arranged at the bottom of the through hole (12). The two straight plates (21) are respectively connected to one of the lead screw nuts (432) not adjacent to them through a connecting rod (22). When the two lead screw nuts (431) approach each other, the two straight plates (21) connected to them move away from each other.
7. The thin-walled part processing device according to claim 2 or 3, characterized in that It further includes a swing assembly: including a bearing kit (6) sleeved on the piston rod of the vertical cylinder (32), and two symmetrically arranged swing cylinders (61). The tail of the swing cylinder (61) is hinged to the bearing kit (6), and the piston rod ends of the swing cylinders (61) are respectively hinged to the side wall of the cylinder body of one of the horizontal cylinders (351).
8. The thin-walled part processing device according to claim 2 or 3, characterized in that, The annular body (352) and the polishing belt (353) are made of polyurethane elastic material.