A vacuum chuck tool for processing thin-walled shell parts

Abstract

The utility model discloses a kind of vacuum chuck toolings of thin-wall shell part processing, including tooling baseplate body and thin-wall workpiece body, the thin-wall workpiece body upside-down placement is placed in the tooling baseplate body top surface and bottom surface outer periphery flat extension is provided with flange plate, the tooling baseplate body top surface middle part is provided with the vacuum adsorption component with the function of lifting support. Advantageous effect lies in: the utility model can form vacuum in vacuum adsorption groove by means of the suction mode of suction pipe, to realize the vacuum adsorption fixation of thin-wall workpiece body, the vacuum adsorption fixation mode of thin-wall workpiece body is simple and easy to realize, and simultaneously, since multiple air springs are vertically fixed in the groove bottom of vacuum adsorption groove, then by means of the mode that the top plate of air spring top is pressed against the bottom surface of flange plate, the bottom surface of flange plate of thin-wall workpiece body can be lifted and supported in the opposite direction of adsorption direction, avoid the situation that flange plate appears downward concave deformation, it is favorable to reduce the rate of defective products.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary components for processing thin-walled shell parts, specifically to a vacuum chuck tooling for processing thin-walled shell parts. Background Technology

[0002] In the field of aerospace, a large number of thin-walled parts exist in major equipment to meet the design requirements of lightweight aircraft. Among them, the protective shell of electrical components used inside the cabin is one of these thin-walled shell parts. In the specific process, vacuum suction cup tooling is used to adsorb and fix it so that the outer surface of the firmly fixed thin-walled shell part can be further processed.

[0003] However, current vacuum suction cup fixtures are typically designed to use vacuum suction to adsorb and fix thin-walled shell workpieces. This results in the thin-walled shell workpiece being prone to denting and deformation at the vacuum adsorption position during the vacuum adsorption process because there is no reverse support for the vacuum adsorption position, which increases the defect rate. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum chuck tooling for machining thin-walled shell parts in order to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a vacuum suction cup fixture for processing thin-walled shell parts, including a fixture base plate body and a thin-walled workpiece body. The fixture base plate body is arranged flat, and the thin-walled workpiece body is placed upside down on the top surface of the fixture base plate body and a flange plate is arranged flatly on the outer periphery of the bottom surface. A vacuum adsorption component with a lifting and supporting function is arranged in the middle of the top surface of the fixture base plate body, and the flange plate is adsorbed and fixed on the top surface of the fixture base plate body by the vacuum adsorption component.

[0007] The tooling base plate body is provided with edge positioning components on all four sides, which are used to quickly position the thin-walled workpiece body above the top of the vacuum adsorption component.

[0008] Each of the edge positioning components is equipped with a pre-pressing fixing component on its upper part, which is used to pre-press the flange plate to cover the top of the vacuum adsorption component.

[0009] Preferably, the vacuum adsorption assembly includes a vacuum adsorption tank, an air extraction pipe, and a gas spring body. The top surface of the tooling base plate body has a vertically circumferentially circumferentially formed vacuum adsorption tank, and the flange plate covers the top of the vacuum adsorption tank. Both sides of the front of the tooling base plate body are longitudinally fixed with air extraction pipes, and the rear ends of the air extraction pipes are connected to the vacuum adsorption tank. The front ends of the air extraction pipes are coaxially fixed with the air extraction pipe. There are multiple gas spring bodies, which are evenly distributed in the vacuum adsorption tank. The bottom ends of the gas spring bodies are vertically fixed to the bottom of the vacuum adsorption tank through fixing sleeves, and the top ends of the gas spring bodies are coaxially fixed with a support plate for supporting the bottom surface of the flange plate.

[0010] Preferably, the top outer edge of the vacuum adsorption tank is covered with a sealing edging made of elastic material.

[0011] Preferably, the trays are all circular plates with an outer diameter smaller than the width of the vacuum adsorption groove, and when the gas spring body is in the initial state, the top surface of the tray is not lower than the top surface of the sealing edge.

[0012] Preferably, each of the air extraction pipes is coaxially fitted with a valve on its exterior, and each of the air extraction pipes is coaxially fixed with a pipe joint at its front end.

[0013] Preferably, each of the edge positioning components includes a sliding groove and a movable seat. The two sides and the front and rear sides of the tooling base body are respectively provided with the sliding grooves along the horizontal and vertical directions, and the movable seats are inserted into the sliding grooves in a horizontal sliding fit. At the same time, the inner and outer ends of the bottom of the sliding groove are respectively provided with an inward pushing limit hole and an outward sliding limit hole. Several positioning blocks are vertically fixed at the close ends of the top surfaces of the multiple movable seats, and the positioning blocks contact the corresponding edges of the flange plate. The top surfaces of the multiple movable seats are vertically provided with mounting holes at the far ends, and the mounting holes are vertically coaxial with the corresponding inward pushing limit holes. Limit rods are coaxially inserted into the mounting holes in a vertical sliding fit, and the bottom ends of the limit rods are vertically sliding with the corresponding inward pushing limit holes. The top ends of the limit rods extend out of the corresponding top surfaces of the movable seats and are coaxially fixed with handles. The pre-pressure fixing components are combined and arranged on the top surfaces of the multiple movable seats between the handles and the positioning blocks.

[0014] Preferably, the grooves are either dovetail grooves or I-shaped grooves, the inner end face of the movable seat is flush with the inner end face of the corresponding positioning block, and when the limiting rod slides vertically with the inward limiting hole, the inner end of the movable seat is in close contact with the inner end of the corresponding groove.

[0015] Preferably, the limiting rod is coaxially fitted with a spring at the portion between the corresponding handle and the top surface of the movable seat, and the two ends of the spring are respectively fixedly connected to the corresponding handle and the top surface of the movable seat.

[0016] Preferably, each of the pre-compression fixing components includes an L-shaped mounting bracket and a cylinder body. The top surfaces of multiple movable seats are each fixed with an inverted L-shaped mounting bracket at the position between the handle and the positioning block. The top horizontal portion of the L-shaped mounting bracket is vertically fixed with the cylinder body. The push rods at the bottom of the cylinder body pass through the top and bottom surfaces of the L-shaped mounting bracket in a vertical sliding engagement manner. The bottom ends of the push rods are all fixed with pressure plates, and the pressure plates are all suspended above the flange plate.

[0017] Preferably, the bottom surface of each pressure plate is covered with an elastic pad made of buffer material. Both the elastic pad and the pressure plate are rectangular strips and their edges are aligned with the corresponding edges of the flange. At the same time, the distance between the outer sliding limiting hole and the corresponding inner pushing limiting hole is greater than the width of the pressure plate.

[0018] The vacuum suction cup fixture used in the processing of thin-walled shell parts described above, specifically for the vacuum adsorption and fixation of the thin-plate workpiece body, utilizes a vacuum adsorption assembly with a lifting and supporting function located in the center of the top surface of the fixture base plate. After the flange plate of the thin-walled workpiece body is placed over the vacuum adsorption groove of the vacuum adsorption assembly, a vacuum is created within the vacuum adsorption groove by means of the suction pipe, thereby achieving vacuum adsorption and fixation of the thin-walled workpiece body. This vacuum adsorption and fixation method for the thin-walled workpiece body is simple and easy to implement. Furthermore, since multiple gas spring bodies are vertically fixed at the bottom of the vacuum adsorption groove, the vacuum adsorption mechanism can further enhance the vacuum adsorption and fixation of the thin-walled workpiece body. By having the support plate at the top of the gas spring body press against the bottom surface of the flange plate, the bottom surface of the flange plate of the thin-walled workpiece body can be lifted and supported in the opposite direction of adsorption, preventing the flange plate from sinking and deforming downwards, which helps to reduce the defect rate. Since the edge positioning components are assembled on all four sides of the tooling base body, and the moving seat of the edge positioning component slides horizontally with the slide groove, and the limiting rod slides vertically with the inward limiting hole, the positioning blocks at the four sides can be moved to their respective positioning positions. Thus, the positioning blocks at the four sides can be used to lift the flange plate of the thin-walled workpiece body. The flange plate is accurately positioned to correspond vertically with the vacuum adsorption tank, facilitating the rapid placement of the thin-walled workpiece body above the top of the vacuum adsorption assembly. This improves the efficiency of vacuum adsorption and fixation of the thin-walled workpiece body. Since the upper part of the movable seat of the edge positioning assembly is equipped with the pre-pressing fixing assembly, after the thin-walled workpiece body is positioned using the positioning block, the cylinder body of the pre-pressing fixing assembly drives the pressure plate and the elastic pad to descend, pre-pressing the flange plate to cover the top of the vacuum adsorption tank. This ensures that the top of the vacuum adsorption tank is pre-sealed, facilitating the smooth placement of the flange plate. The vacuum adsorption fixation of the plate also facilitates the pre-compression of the gas spring body of the vacuum adsorption assembly, causing the support plate to sink into the vacuum adsorption groove. Furthermore, due to the horizontal sliding engagement between the moving seat of the edge positioning assembly and the slide groove, and the vertical sliding engagement between the limiting rod and the outer sliding limiting hole, the pre-pressure fixing components at the four sides can be moved to positions away from the flange plate. The outward sliding removal method of the pre-pressure fixing components is simple and easy to implement, which facilitates the timely removal of the pre-pressure fixing components after the thin-walled workpiece body is processed, thereby enabling the thin-walled workpiece body to be smoothly removed from the top of the workpiece substrate body.

[0019] The beneficial effects are as follows: 1. This utility model has a vacuum adsorption component with lifting and support function in the middle of the top surface of the tooling substrate body. After the flange plate of the thin-walled workpiece body is covered on the vacuum adsorption groove of the vacuum adsorption component, a vacuum can be formed in the vacuum adsorption groove by means of suction through the air extraction pipe, so as to realize the vacuum adsorption and fixation of the thin-walled workpiece body. The vacuum adsorption and fixation method of the thin-walled workpiece body is simple and easy to implement. At the same time, since multiple gas spring bodies are vertically fixed at the bottom of the vacuum adsorption groove, and the bottom surface of the flange plate is supported by the support plate at the top of the gas spring body, the bottom surface of the flange plate of the thin-walled workpiece body can be lifted and supported in the opposite direction of adsorption, avoiding the flange plate from sinking and deforming downward, which helps to reduce the defect rate.

[0020] 2. The tooling base body is equipped with edge positioning components on all four sides. The positioning blocks on the four sides can be moved to the positioning positions by the horizontal sliding cooperation between the moving seat and the slide groove of the edge positioning components and the vertical sliding cooperation between the limiting rod and the inner pushing limiting hole. The flange plate of the thin-walled workpiece body can be accurately positioned to correspond to the vacuum adsorption tank, which makes it convenient to quickly position the thin-walled workpiece body above the vacuum adsorption component and improve the vacuum adsorption and fixing efficiency of the thin-walled workpiece body.

[0021] 3. The upper part of the movable seat of the edge positioning component is equipped with a pre-pressing fixing component. After the thin-walled workpiece body is placed in a limited position by the positioning block, the cylinder body of the pre-pressing fixing component drives the pressure plate and elastic pad to descend, so that the flange plate can be pre-pressed and covered on the top of the vacuum adsorption tank. This makes it easy to pre-seal the top of the vacuum adsorption tank and smoothly achieve vacuum adsorption fixing of the flange plate. It also makes it easy to pre-compress the gas spring body of the vacuum adsorption component so that the support plate sinks into the vacuum adsorption tank.

[0022] 4. By using the horizontal sliding engagement of the moving seat of the edge positioning component with the slide groove and the vertical sliding engagement of the limiting rod with the outer sliding limiting hole, the pre-pressing fixing components at the four sides can be moved to positions away from the flange plate. The external sliding removal method of the pre-pressing fixing components is simple and easy to implement, which makes it easy to remove the pre-pressing fixing components in time after the thin-walled workpiece body is processed, so that the thin-walled workpiece body can be smoothly removed from the top of the workpiece base plate body. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0024] Figure 1 This is an overall isometric schematic diagram of this utility model;

[0025] Figure 2 This is a utility model Figure 1 A schematic diagram of the thin-walled workpiece body without its overall structure.

[0026] Figure 3 This is a utility model Figure 1 A schematic diagram of the cross-section;

[0027] Figure 4 This is a utility model Figure 3 Enlarged view of a portion at point A;

[0028] Figure 5 This is a utility model Figure 1 Front view diagram;

[0029] Figure 6 This is a utility model Figure 1 A left-view diagram;

[0030] Figure 7 This is a utility model Figure 1 A top-down view.

[0031] The annotations in the attached figures are explained as follows:

[0032] 1. Thin-walled workpiece body; 101. Flange plate; 2. Tooling base plate body; 3. Edge positioning assembly; 301. Handle; 302. Slide groove; 303. Moving seat; 304. Outer sliding limit hole; 305. Spring; 306. Positioning block; 307. Limiting rod; 308. Mounting hole; 309. Inner push positioning hole; 4. Pre-compression fixing assembly; 401. Elastic pad; 402. Pressure plate; 403. L-shaped mounting bracket; 404. Cylinder body; 405. Push rod; 5. Vacuum adsorption assembly; 501. Pipe joint; 502. Suction pipe; 503. Valve; 504. Suction pipe; 505. Gas spring body; 506. Support plate; 507. Vacuum adsorption tank; 508. Sealing edge; 509. Fixing sleeve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] See Figures 1-7As shown, this utility model provides a vacuum suction cup fixture for processing thin-walled shell parts, including a fixture base plate body 2 and a thin-walled workpiece body 1. The fixture base plate body 2 is placed flat, and the thin-walled workpiece body 1 is placed upside down on the top surface of the fixture base plate body 2, with a flange plate 101 extending flatly from the outer periphery of its bottom surface. A vacuum adsorption component 5 with a lifting and supporting function is provided in the middle of the top surface of the fixture base plate body 2, and the flange plate 101 is adsorbed and fixed to the top surface of the fixture base plate body 2 by the vacuum adsorption component 5. Specifically, the vacuum suction... Component 5 includes a vacuum adsorption tank 507, an air extraction pipe 502, and a gas spring 305 body. A full-circumference vacuum adsorption tank 507 is vertically formed in the center of the top surface of the tooling base plate 2, and a flange plate 101 covers the top of the vacuum adsorption tank 507. Air extraction pipes 504 are longitudinally fixed on both sides of the front of the tooling base plate 2, and the rear ends of the air extraction pipes 504 are connected to the vacuum adsorption tank 507. Simultaneously, an air extraction pipe 502 is coaxially fixed to the front end of each air extraction pipe 504. The gas spring 305 body... The gas springs 305 are multiple in number and evenly distributed within the vacuum adsorption tank 507. The bottom ends of the gas spring bodies are vertically fixed to the bottom of the vacuum adsorption tank 507 via fixing sleeves 509, and the top ends of the gas spring bodies are coaxially fixed with support plates 506 for supporting the bottom surface of the flange plate 101. The purpose of this arrangement is to allow the flange plate 101 of the thin-walled workpiece body 1 to be placed over the vacuum adsorption tank 507 of the vacuum adsorption assembly 5, and then, by means of suction via the suction pipe 502, form a gas spring within the vacuum adsorption tank 507. A vacuum is created to achieve vacuum adsorption and fixation of the thin-walled workpiece body 1. The vacuum adsorption and fixation method of the thin-walled workpiece body 1 is simple and easy to implement. At the same time, since multiple gas springs 305 bodies are vertically fixed at the bottom of the vacuum adsorption tank 507, and the bottom surface of the flange plate 101 is supported by the support plate 506 on the top of the gas spring 305 body, the bottom surface of the flange plate 101 of the thin-walled workpiece body 1 can be lifted and supported in the opposite direction of adsorption, so as to prevent the flange plate 101 from being concave and deformed downward.

[0035] See Figures 1-4As shown, edge positioning components 3 are assembled on all four sides of the tooling base plate body 2. These edge positioning components 3 are used to quickly position the thin-walled workpiece body 1 above the top of the vacuum adsorption assembly 5. Specifically, each edge positioning component 3 includes a sliding groove 302 and a movable seat 303. Sliding grooves 302 are respectively opened along the horizontal and vertical directions on the two sides and the front and rear sides of the tooling base plate body 2. The movable seat 303 is inserted into the sliding groove 302 in a horizontal sliding fit. At the same time, the inner and outer ends of the bottom of the sliding groove 302 are respectively vertically opened with inner... The upper surfaces of multiple movable seats 303 are vertically fixed with several positioning blocks 306 at their close ends, and the positioning blocks 306 all contact and abut against the corresponding edges of the flange plate 101. The upper surfaces of the multiple movable seats 303 are vertically provided with mounting holes 308 at their far-away positions, and the mounting holes 308 are vertically coaxially aligned with the corresponding inner push-limiting holes. Limiting rods 307 are coaxially inserted into the mounting holes 308 in a vertical sliding fit, and the bottom ends of the limiting rods 307 are vertically slidingly engaged with the corresponding inner push-limiting holes. Each of the tops of the moving seats 303 extends out of the top surface of the corresponding moving seat 303 and is coaxially fixed with a handle 301. A pre-pressurization fixing component 4 is assembled on the top surface of each of the multiple moving seats 303 at the position between the handle 301 and the positioning block 306. This arrangement is because, through the horizontal sliding engagement of the moving seat 303 of the edge positioning component 3 with the slide groove 302 and the vertical sliding engagement of the limiting rod 307 with the inward pushing limiting hole, the positioning blocks 306 at the four sides can be moved to their respective positioning positions. Thus, with the help of the positioning blocks 306 at the four sides, the flange plate 10 of the thin-walled workpiece body 1 can be positioned... 1. The position is accurately limited to correspond vertically with the vacuum adsorption tank 507, which facilitates the quick placement of the thin-walled workpiece body 1 above the top of the vacuum adsorption assembly 5. At the same time, through the horizontal sliding cooperation between the moving seat 303 of the side positioning assembly 3 and the slide groove 302, and the vertical sliding cooperation between the limiting rod 307 and the outer sliding limiting hole 304, the pre-pressure fixing assembly 4 at the four sides can be moved to a position away from the flange plate 101. The external sliding removal method of the pre-pressure fixing assembly 4 is simple and easy to implement, which makes it easy to remove the pre-pressure fixing assembly 4 in time after the thin-walled workpiece body 1 is processed.

[0036] See Figures 1-4As shown, each of the edge positioning components 3 is equipped with a pre-pressing fixing component 4 on its upper part. This pre-pressing fixing component 4 is used to pre-press the flange plate 101 onto the top of the vacuum adsorption component 5. Specifically, each pre-pressing fixing component 4 includes an L-shaped mounting bracket 403 and a cylinder body 404. An inverted L-shaped mounting bracket 403 is fixed to the top surface of each of the multiple movable seats 303 at the position between the handle 301 and the positioning block 306. The cylinder body 404 is vertically fixed to the top horizontal portion of each L-shaped mounting bracket 403. The push rod 405 at the bottom of the cylinder body 404 passes through the top and bottom surfaces of the L-shaped mounting bracket 403 in a vertical sliding engagement manner. Each end is fixed with a pressure plate 402, which is suspended above the flange plate 101. The purpose of this arrangement is that after the thin-walled workpiece body 1 is positioned by the positioning block 306, the pressure plate 402 and the elastic pad 401 are lowered by the cylinder body 404 of the pre-pressing fixing component 4. This allows the flange plate 101 to be pre-pressed and covered on the top of the vacuum adsorption tank 507. This facilitates the pre-sealing of the top of the vacuum adsorption tank 507 to achieve vacuum adsorption fixing of the flange plate 101. It also facilitates the pre-compression of the gas spring 305 body of the vacuum adsorption component 5 to cause the support plate 506 to sink into the vacuum adsorption tank 507.

[0037] See Figures 1-7 As shown, the vacuum adsorption assembly 5, the edge positioning assembly 3, and the pre-compression fixing assembly 4 have been optimized as follows: Specifically, the top outer edge of the vacuum adsorption tank 507 is covered with a sealing edge 508 made of elastic material. This sealing edge 508 enhances the seal between the bottom surface of the flange plate 101 and the top of the vacuum adsorption tank 507, ensuring stable vacuum adsorption and fixing of the flange plate 101. Optionally, the support plates 506 are all circular plates with an outer diameter smaller than the width of the vacuum adsorption tank 507. When the gas spring 305 is in its initial state, the top surface of the support plate 506 is not lower than the top surface of the sealing edge 508. This configuration allows the support plate 506 to support the bottom surface of the flange plate 101 after it has been vacuum adsorbed and fixed, and the gas spring 305 provides a certain supporting force. Furthermore, valves 503 are coaxially assembled on the outside of the suction pipe 502, and pipe joints 501 are coaxially fixed at the front end of the suction pipe 502. This arrangement facilitates the control of the opening and closing state of the suction pipe 502 through the valves 503, and also facilitates the quick connection of the suction pipe 502 with the external vacuum suction pipeline through the pipe joints 501.

[0038] See Figures 1-7As shown, the slide grooves 302 are all dovetail grooves or I-shaped grooves, so that the movable seat 303 can only slide horizontally along the slide groove 302. Optionally, the inner end face of the movable seat 303 is flush with the inner end face of the corresponding positioning block 306. When the limiting rod 307 slides vertically with the inward limiting hole, the inner end of the movable seat 303 is in contact with the inner end of the corresponding slide groove 302. This arrangement provides a clear indication when the movable seat 303 is pushed into place. Optionally, the portion of the limiting rod 307 between the corresponding handle 301 and the top surface of the movable seat 303 is coaxially fitted with a spring 305, and both ends of the spring 305 are fixedly connected to the corresponding handle 301 and the top surface of the movable seat 303, respectively. This arrangement allows the limiting rod 307 to automatically return to its original position using the elastic force of the spring 305. Alternatively, the bottom surface of the pressure plate 402 is covered with an elastic pad 401 of buffer material. Both the elastic pad 401 and the pressure plate 402 are rectangular strips and their edges are aligned with the corresponding edges of the flange plate 101. This arrangement allows for elastic buffering of the flange plate 101 by pressing it against the top surface of the flange plate 101. At the same time, the distance between the outer sliding limit hole 304 and the corresponding inner push limit hole is greater than the width of the pressure plate 402. This allows the moving seat 303 to move the pressure plate 402 and the elastic pad 401 to be completely offset vertically from the flange plate 101, thus facilitating the smooth removal of the thin-walled workpiece body 1.

[0039] Using the above structure, specifically for the vacuum adsorption and fixing of thin-walled workpieces, since a vacuum adsorption component 5 with a lifting and supporting function is provided in the middle of the top surface of the tooling base plate 2, and then the flange plate 101 of the thin-walled workpiece 1 is placed on the vacuum adsorption groove 507 of the vacuum adsorption component 5, a vacuum can be formed in the vacuum adsorption groove 507 by means of suction through the suction pipe 502, thereby realizing the vacuum adsorption and fixing of the thin-walled workpiece 1. The vacuum adsorption and fixing method of the thin-walled workpiece 1 is simple and easy to implement. At the same time, since multiple gas springs 305 bodies are vertically fixed at the bottom of the vacuum adsorption groove 507, and then the support plate 5 on the top of the gas spring 305 body is used for the vacuum adsorption and fixing. The method of pressing against the bottom surface of the flange plate 101 can support the bottom surface of the flange plate 101 of the thin-walled workpiece body 1 in the opposite direction of adsorption, preventing the flange plate 101 from sinking and deforming downwards, which helps to reduce the defect rate. Since the four sides of the tooling base body 2 are equipped with edge positioning components 3, the positioning blocks 306 at the four sides can be moved to the positioning positions respectively by the horizontal sliding cooperation between the moving seat 303 of the edge positioning component 3 and the slide groove 302, and the vertical sliding cooperation between the limiting rod 307 and the inner pushing limiting hole. Thus, the flange plate 101 of the thin-walled workpiece body 1 can be accurately limited to the positioning position by means of the positioning blocks 306 at the four sides. Corresponding vertically to the vacuum adsorption tank 507, the thin-walled workpiece body 1 is quickly and easily positioned above the top of the vacuum adsorption assembly 5, which helps improve the vacuum adsorption and fixing efficiency of the thin-walled workpiece body 1. Since the moving seat 303 of the edge positioning assembly 3 is equipped with a pre-pressing fixing assembly 4, after the thin-walled workpiece body 1 is positioned by the positioning block 306, the cylinder body 404 of the pre-pressing fixing assembly 4 drives the pressure plate 402 and the elastic pad 401 to descend, which can pre-press the flange plate 101 to cover the top of the vacuum adsorption tank 507. This facilitates the pre-sealing of the top of the vacuum adsorption tank 507 and smoothly achieves the fixing of the flange plate 101. Vacuum adsorption fixation also facilitates the pre-compression of the gas spring 305 body of the vacuum adsorption component 5, causing the support plate 506 to sink into the vacuum adsorption groove 507. Furthermore, due to the horizontal sliding cooperation between the moving seat 303 of the side positioning component 3 and the slide groove 302, and the vertical sliding cooperation between the limiting rod 307 and the outer sliding limiting hole 304, the pre-pressure fixing components 4 at the four sides can be moved to positions away from the flange plate 101. The external sliding removal method of the pre-pressure fixing components 4 is simple and easy to implement, which facilitates the timely removal of the pre-pressure fixing components 4 after the thin-walled workpiece body 1 is processed, thereby enabling the thin-walled workpiece body 1 to be smoothly removed from the top of the workpiece substrate body 2.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A vacuum chuck fixture for machining thin-walled shell parts, comprising a fixture base plate body (2) and a thin-walled workpiece body (1), characterized in that: The tooling substrate body (2) is placed flat, and the thin-walled workpiece body (1) is placed upside down on the top surface of the tooling substrate body (2) and a flange plate (101) is provided on the outer periphery of the bottom surface. A vacuum adsorption component (5) with lifting and support function is provided in the middle of the top surface of the tooling substrate body (2), and the flange plate (101) is adsorbed and fixed on the top surface of the tooling substrate body (2) by the vacuum adsorption component (5). The tooling substrate body (2) is provided with edge positioning components (3) on all four sides, which are used to quickly position the thin-walled workpiece body (1) above the top of the vacuum adsorption component (5) by means of the edge positioning components (3) on the four sides. Each of the edge positioning components (3) is equipped with a pre-pressing fixing component (4) on its upper part, which is used to pre-press the flange plate (101) onto the top of the vacuum adsorption component (5) by means of the pre-pressing fixing component (4).

2. The vacuum chuck tooling for machining thin-walled shell parts according to claim 1, characterized in that: The vacuum adsorption assembly (5) includes a vacuum adsorption tank (507), an air extraction pipe (502), and a gas spring (305) body. The top surface of the tooling base plate body (2) has a full circumference of the vacuum adsorption tank (507) vertically formed in the center, and the flange plate (101) covers the top of the vacuum adsorption tank (507). Suction pipes (504) are fixed longitudinally on both sides of the front of the tooling base plate body (2), and the rear ends of the suction pipes (504) are connected to the vacuum adsorption tank (507). 7) Connected, and at the same time, the front end of the suction pipe (504) is coaxially fixed with the suction pipe (502). There are multiple gas springs (305) and they are evenly distributed in the vacuum adsorption tank (507). The bottom end of the gas spring (305) is vertically fixed to the bottom of the vacuum adsorption tank (507) by the fixing sleeve (509). The top end of the gas spring (305) is coaxially fixed with a support plate (506) for supporting the bottom surface of the flange plate (101).

3. The vacuum chuck fixture for machining thin-walled shell parts according to claim 2, characterized in that: The top outer edge of the vacuum adsorption tank (507) is covered with a sealing edging (508) made of elastic material.

4. The vacuum chuck fixture for machining thin-walled shell parts according to claim 3, characterized in that: The trays (506) are all circular plates with an outer diameter smaller than the width of the vacuum adsorption groove (507), and when the gas spring (305) body is in the initial state, the top surface of the tray (506) is not lower than the top surface of the sealing edge (508).

5. The vacuum chuck fixture for machining thin-walled shell parts according to claim 4, characterized in that: Each of the air extraction pipes (502) is coaxially fitted with a valve (503) on its exterior, and each of the front ends of the air extraction pipes (502) is coaxially fixed with a pipe joint (501).

6. A vacuum chuck fixture for machining thin-walled shell parts according to any one of claims 2-5, characterized in that: Each of the edge positioning components (3) includes a groove (302) and a movable seat (303). The two sides and the front and rear sides of the tooling base plate body (2) are respectively provided with the groove (302) along the horizontal and vertical directions. The movable seats (303) are inserted into the grooves (302) in a horizontal sliding fit. At the same time, the inner and outer ends of the bottom of the groove (302) are respectively provided with an inward pushing limit hole and an outward sliding limit hole (304). The top surfaces of the multiple movable seats (303) are each vertically fixed with a number of positioning blocks (306) at their close ends. The positioning blocks (306) are all in contact with the corresponding edge of the flange plate (101). The top surface of the movable seat (303) is provided with vertical mounting holes (308) at positions far apart from each other, and the mounting holes (308) are vertically coaxially aligned with the corresponding inward pushing limiting holes. The mounting holes (308) are coaxially inserted with limiting rods (307) in a vertical sliding fit, and the bottom end of the limiting rods (307) is vertically slidingly fitted with the corresponding inward pushing limiting holes. The top end of the limiting rods (307) extends out of the top surface of the corresponding movable seat (303) and is coaxially fixed with a handle (301). The top surfaces of multiple movable seats (303) are all combined with the pre-compression fixing components (4) at the position between the handle (301) and the positioning block (306).

7. The vacuum chuck fixture for machining thin-walled shell parts according to claim 6, characterized in that: The grooves (302) are all of the following types: dovetail grooves or I-shaped grooves. The inner end face of the movable seat (303) is flush with the inner end face of the corresponding positioning block (306). When the limiting rod (307) slides vertically with the inward limiting hole, the inner end of the movable seat (303) is in close contact with the inner end of the corresponding groove (302).

8. The vacuum chuck fixture for machining thin-walled shell parts according to claim 7, characterized in that: The limiting rod (307) has a spring (305) coaxially fitted between the top surfaces of the corresponding handle (301) and the moving seat (303), and the two ends of the spring (305) are fixedly connected to the top surfaces of the corresponding handle (301) and the moving seat (303).

9. A vacuum chuck fixture for machining thin-walled shell parts according to claim 7 or 8, characterized in that: Each of the pre-compression fixing components (4) includes an L-shaped mounting bracket (403) and a cylinder body (404). The top surfaces of multiple movable seats (303) are fixed with inverted L-shaped mounting brackets (403) at positions between the handle (301) and the positioning block (306). The top horizontal portion of the L-shaped mounting bracket (403) is vertically fixed with the cylinder body (404). The push rods (405) at the bottom of the cylinder body (404) pass through the top and bottom surfaces of the L-shaped mounting bracket (403) in a vertical sliding fit. The bottom ends of the push rods (405) are flatly fixed with pressure plates (402), and the pressure plates (402) are suspended above the flange plate (101).

10. The vacuum chuck tooling for machining thin-walled shell parts according to claim 9, characterized in that: The bottom surface of each pressure plate (402) is covered with an elastic pad (401) of buffer material. Both the elastic pad (401) and the pressure plate (402) are rectangular strips and their edges are aligned with the corresponding edges of the flange plate (101). At the same time, the distance between the outer sliding limiting hole (304) and the corresponding inner pushing limiting hole is greater than the width of the pressure plate (402).

Images