Aircraft part machining, positioning and clamping device

Abstract

The utility model relates to the technical field of clamps, and discloses an aircraft part processing, positioning and clamping device, which comprises a base station, clamping assemblies for clamping are arranged on the two sides of the base station; the lifting structure comprises a base plate, a partition plate, a gas heat exchange cavity and a liquid heat exchange cavity, the base plate is fixedly installed on the top of the base table, the partition plate is fixedly connected with the base plate, the interior of the base plate is hollow, and the partition plate divides a cavity of the base plate into the gas heat exchange cavity and the liquid heat exchange cavity. The gas source is a gaseous nitrogen storage bottle, the water source can be tap water, nitrogen is fed into the gas heat exchange cavity, low-temperature water is fed into the liquid heat exchange cavity, and heat at the position where a workpiece is attached to the base plate is taken away through the two media, so that the workpiece is at the stable temperature in the machining process; workpiece deformation caused by overlarge temperature difference is prevented from influencing the machining precision, the quality of the workpiece is improved, and the machining precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to fixture technical field especially relates to a kind of airplane parts machining positioning clamping device. BACKGROUND

[0002] In the processing of aircraft longerons, the longerons need to be clamped to ensure their position is fixed, and then the clamped workpieces are processed.

[0003] After searching, the prior art discloses a kind to be used for airplane parts machining longeron tool (publication number: CN118123739A), including two groups of straight line tracks and three groups of above clamping parts, each group of clamping parts includes two clamping heads, two the clamping head is respectively slid on two groups the straight line track, the clamping head includes the slide seat slid on straight line track, the slide seat is transversely moved and provided with slide frame, the slide frame is rotatably provided with side wheel for abutting on the side edge of longeron, the slide frame is also provided with double-end electric cylinder, the double-end electric cylinder two ends are respectively connected with one extension rod, the extension rod end is provided with the pressure head pressed on the side edge upper and lower end face of longeron.

[0004] In the prior art, the side walls and the top of the workpiece are respectively limited by the side wheels on the slide seat and the electric cylinder. However, the size of the workpiece may deviate at different temperatures during processing, and the size of the workpiece may meet the standards during processing, but the size may be smaller after processing due to temperature drop. Therefore, it is necessary to control the stable temperature of the workpiece during processing.

[0005] Therefore, we propose a kind to be used for airplane parts machining positioning clamping device. UTILITY MODEL CONTENTS

[0006] The utility model mainly solves the technical problem that the temperature cannot be controlled during the processing of the above-mentioned workpiece, and provides a kind to be used for airplane parts machining positioning clamping device.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme, a kind to be used for airplane parts machining positioning clamping device, including:

[0008] The base is provided with a clamping assembly on both sides for clamping;

[0009] The lifting structure is arranged on the top of the base for placing the workpiece, and the lifting structure includes a base plate, a partition plate, a gas heat exchange cavity and a liquid heat exchange cavity. The base plate is fixedly installed on the top of the base, the partition plate is fixedly connected with the base plate, the base plate is hollow, and the partition plate divides the cavity of the base plate into the gas heat exchange cavity and the liquid heat exchange cavity. The gas heat exchange cavity is connected with a gas source, and the liquid heat exchange cavity is connected with a water source.

[0010] As a preferred mode of the utility model, the cushion plate forms a hollow rectangular block, the partition plate is matched with the cushion plate cavity, the partition plate is fixedly installed inside the cushion plate, a gas heat exchange cavity is formed above the partition plate, and a liquid heat exchange cavity is formed below the partition plate.

[0011] As a preferred mode of the utility model, the lifting structure further comprises a water pipe and an air pipe, one end of the cushion plate is fixedly installed with one air pipe and one water pipe, the air pipe is communicated with the gas heat exchange cavity, and the water pipe is communicated with the liquid heat exchange cavity.

[0012] As a preferred mode of the utility model, the lifting structure further comprises a first fin and a second fin, a plurality of second fins are fixedly installed on the top of the partition plate, and a plurality of first fins are fixedly installed on the bottom of the partition plate.

[0013] As a preferred mode of the utility model, the first fin and the second fin are integrally formed with the partition plate, and the first fin and the second fin abut against the bottom surface and the top surface of the cushion plate respectively.

[0014] As a preferred mode of the utility model, the first fin and the second fin are both V-shaped rods with an opening in the middle, the openings of the first fin and the second fin are oppositely arranged, a plurality of first fins form an open and gradually narrowing channel in the liquid heat exchange cavity, and a plurality of second fins form an open and gradually narrowing channel in the gas heat exchange cavity.

[0015] As a preferred mode of the utility model, the clamping assembly comprises a sliding seat, a driving motor, a large arm, a guide roller and a push rod, one side of the base is provided with a guide rod, at least three sliding seats are slidably arranged on the guide rod, one driving motor is fixedly installed on each sliding seat, the large arm is slidably connected with the sliding seat, the output shaft of the driving motor is provided with a screw rod for driving the large arm, the large arm is rotatably provided with the guide roller, and the push rod is fixedly connected with the guide roller and used for pressing down the workpiece.

[0016] As a preferred mode of the utility model, the large arm forms an L-shaped rod, the large arm is provided with a threaded hole, the screw rod is connected with the threaded hole of the large arm, and the guide roller is rotatably arranged at the bottom of the large arm.

[0017] Advantages

[0018] The utility model provides a kind of aircraft parts machining positioning clamping device.There is following beneficial effect:

[0019] 1. The aircraft part machining positioning and clamping device, through connecting water source with water pipe and gas source with gas pipe, the gas source is gaseous nitrogen storage bottle, the water source can be tap water, through sending nitrogen into the gas heat exchange cavity and low-temperature water into the liquid heat exchange cavity, the heat of the position where the workpiece and the backing plate are attached is taken away by the two media, so that the workpiece is in stable temperature during the machining process, the excessive temperature difference is avoided to cause the workpiece deformation to affect the machining precision, and the quality of the workpiece is improved and the machining precision is ensured.

[0020] 2. The aircraft part machining positioning and clamping device, through forming a gradually narrowing channel above and below the partition plate, the flow directions of nitrogen and water are opposite, the design can ensure sufficient heat exchange of the backing plate and the workpiece, meanwhile, the nitrogen and water are separated by the partition plate, the nitrogen can play a buffering role when heat exchange between the cooling water and the backing plate, the good cooling effect of the cooling water can be fully utilized, and the cracking of the backing plate due to a large temperature gradient in the backing plate is prevented, meanwhile, the plurality of first fins and second fins can increase the contact surface area with water and nitrogen, heat exchange is facilitated, and the hollow part of the backing plate is further supported, and the load bearing effect of the backing plate is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole perspective view of the utility model;

[0022] Figure 2 It is a clamping assembly perspective view of the utility model;

[0023] Figure 3 It is a backing plate perspective view of the utility model;

[0024] Figure 4 It is a backing plate partial sectional view of the utility model;

[0025] Figure 5 It is a partition plate perspective view of the utility model.

[0026] Legend: 10, base; 11, sliding seat; 12, driving motor; 13, large arm; 14, guide roller; 15, push rod; 20, backing plate; 21, partition plate; 22, water pipe; 23, gas pipe; 24, gas heat exchange cavity; 25, liquid heat exchange cavity; 30, first fin; 31, second fin. DETAILED DESCRIPTION

[0027] An aircraft part machining positioning and clamping device, as shown in Figure 1 and Figure 2 , comprising:

[0028] The base station 10 is provided with clamping assemblies on both sides for clamping, the clamping assembly comprises a sliding seat 11, a driving motor 12, a large arm 13, a guide roller 14 and a push rod 15, one side of the base station 10 is provided with a guide rod, at least three sliding seats 11 are slidably arranged on the guide rod, one driving motor 12 is fixedly installed on each sliding seat 11, the large arm 13 is slidably connected with the sliding seat 11, the output shaft of the driving motor 12 is provided with a screw rod for driving the large arm 13, the guide roller 14 is rotatably arranged on the large arm 13, the push rod 15 is fixedly connected with the guide roller 14 for pressing the workpiece, the large arm 13 forms an L-shaped rod, the large arm 13 is provided with a threaded hole, the screw rod is connected with the threaded hole of the large arm 13, and the guide roller 14 is rotatably arranged at the bottom of the large arm 13;

[0029] In the scheme, the large arm 13 is pushed to approach the base station 10 by the driving motor 12, the workpiece is limited by the guide roller 14 abutting against the side wall of the workpiece, the output shaft of the push rod 15 is provided with a rubber block, the rubber block is pushed down to press the workpiece and form a limit above the workpiece, and a plurality of clamping assemblies can alternately clamp different positions of the workpiece to facilitate processing of different positions of the workpiece.

[0030] As shown in Figure 3 and Figure 4 , the lifting structure is arranged on the top of the base station 10 for placing the workpiece, and the lifting structure comprises a pad plate 20, a partition plate 21, a gas heat exchange cavity 24 and a liquid heat exchange cavity 25, the pad plate 20 is fixedly installed on the top of the base station 10, the partition plate 21 is fixedly connected with the pad plate 20, the pad plate 20 is hollow, the partition plate 21 divides the cavity of the pad plate 20 to form the gas heat exchange cavity 24 and the liquid heat exchange cavity 25, the gas heat exchange cavity 24 is connected with a gas source, the liquid heat exchange cavity 25 is connected with a water source, the pad plate 20 forms a hollow rectangular block, the partition plate 21 is matched with the cavity of the pad plate 20, the partition plate 21 is fixedly installed in the interior of the pad plate 20, the gas heat exchange cavity 24 is formed above the partition plate 21, and the liquid heat exchange cavity 25 is formed below the partition plate 21, the lifting structure further comprises a water pipe 22 and a gas pipe 23, one end of the pad plate 20 is fixedly installed with one gas pipe 23 and one water pipe 22, the gas pipe 23 is in communication with the gas heat exchange cavity 24, and the water pipe 22 is in communication with the liquid heat exchange cavity 25;

[0031] In the scheme, the water pipe 22 is connected with the water source, and the gas pipe 23 is connected with the gas source, the gas source is a gaseous nitrogen storage bottle, and the water source can be tap water, nitrogen is sent into the gas heat exchange cavity 24, low-temperature water is sent into the liquid heat exchange cavity 25, heat at the position where the workpiece is attached to the pad plate 20 is taken away by the two media, the workpiece is kept at a stable temperature during processing, a large temperature difference is avoided to cause the workpiece to deform and affect the processing precision, the quality of the workpiece is improved, and the processing precision is guaranteed.

[0032] As shown in Figure 5As shown, the lifting structure further comprises first fins 30 and second fins 31, the top of the partition plate 21 is fixedly installed with a plurality of second fins 31, the bottom of the partition plate 21 is fixedly installed with a plurality of first fins 30, the first fins 30 and the second fins 31 are integrally formed with the partition plate 21, the first fins 30 and the second fins 31 abut the bottom surface and the top surface of the backing plate 20 respectively, the first fins 30 and the second fins 31 are V-shaped rods with a gap in the middle, the gaps of the first fins 30 and the second fins 31 are oppositely arranged, a plurality of first fins 30 form an open tapering channel in the liquid heat exchange cavity 25, and a plurality of second fins 31 form an open tapering channel in the gas heat exchange cavity 24.

[0033] In the scheme, by forming a tapering channel above and below the partition plate 21, the flow directions of nitrogen and water are opposite, this design can guarantee sufficient heat exchange of the backing plate 20 and the workpiece, at the same time, the nitrogen and water are separated by the partition plate 21, the nitrogen can play a buffering role when heat exchange between the cooling water and the backing plate 20, which can fully utilize the good cooling effect of the cooling water, and prevent the backing plate 20 from cracking due to a large temperature gradient in the internal part, in addition, the plurality of first fins 30 and the second fins 31 can increase the contact surface area with water and nitrogen, which is helpful for heat exchange, and can further support the hollow part of the backing plate 20, guaranteeing the bearing effect of the backing plate 20.

[0034] The working principle of the utility model is: connecting the water pipe 22 with a water source, connecting the gas pipe 23 with a gas source, the gas source is a gaseous nitrogen storage bottle, the water source can be tap water, sending nitrogen into the gas heat exchange cavity 24 and low-temperature water into the liquid heat exchange cavity 25, taking away the heat of the workpiece and the backing plate 20 through the two media, so that the workpiece is in a stable temperature during the machining process, forming a tapering channel above and below the partition plate 21, the flow directions of nitrogen and water are opposite, this design can guarantee sufficient heat exchange of the backing plate 20 and the workpiece, the nitrogen and water are separated by the partition plate 21, the nitrogen can play a buffering role when heat exchange between the cooling water and the backing plate 20, which can fully utilize the good cooling effect of the cooling water, and prevent the backing plate 20 from cracking due to a large temperature gradient in the internal part, the plurality of first fins 30 and the second fins 31 can increase the contact surface area with water and nitrogen, which is helpful for heat exchange, and can further support the hollow part of the backing plate 20, guaranteeing the bearing effect of the backing plate 20.

[0035] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A positioning and clamping device for machining aircraft parts, characterized in that, include: A base (10) is provided on both sides of the base (10) for clamping; A lifting structure is set on the top of the base (10) for placing workpieces. The lifting structure includes a pad (20), a partition (21), a gas heat exchange chamber (24), and a liquid heat exchange chamber (25). The pad (20) is fixedly installed on the top of the base (10). The partition (21) is fixedly connected to the pad (20). The pad (20) is hollow inside. The partition (21) divides the chamber of the pad (20) into a gas heat exchange chamber (24) and a liquid heat exchange chamber (25). The gas heat exchange chamber (24) is connected to a gas source, and the liquid heat exchange chamber (25) is connected to a water source.

2. The aircraft parts processing positioning and clamping device according to claim 1, characterized in that: The pad (20) forms a hollow rectangular block, and the partition (21) is adapted to the cavity of the pad (20). The partition (21) is fixedly installed inside the pad (20). A gas heat exchange chamber (24) is formed above the partition (21), and a liquid heat exchange chamber (25) is formed below the partition (21).

3. The aircraft parts processing positioning and clamping device according to claim 1, characterized in that: The lifting structure also includes a water pipe (22) and an air pipe (23). One air pipe (23) and one water pipe (22) are fixedly installed at one end of the pad (20). The air pipe (23) is connected to the gas heat exchange chamber (24), and the water pipe (22) is connected to the liquid heat exchange chamber (25).

4. The aircraft parts processing positioning and clamping device according to claim 1, characterized in that: The lifting structure also includes a first fin (30) and a second fin (31). Several second fins (31) are fixedly installed on the top of the partition (21), and several first fins (30) are fixedly installed on the bottom of the partition (21).

5. The aircraft parts processing positioning and clamping device according to claim 4, characterized in that: The first fin (30) and the second fin (31) are integrally formed with the partition (21), and the first fin (30) and the second fin (31) respectively abut against the bottom surface and the top surface of the pad (20).

6. The aircraft parts processing positioning and clamping device according to claim 4, characterized in that: The first fin (30) and the second fin (31) are both V-shaped rods with a notch in the middle. The notches of the first fin (30) and the second fin (31) are arranged in opposite directions. Multiple first fins (30) form a channel with a gradually narrowing opening in the liquid heat exchange chamber (25), and multiple second fins (31) form a channel with a gradually narrowing opening in the gas heat exchange chamber (24).

7. The aircraft parts processing positioning and clamping device according to claim 1, characterized in that: The clamping assembly includes a slide (11), a drive motor (12), a large arm (13), a guide roller (14), and a push rod (15). A guide rod is provided on one side of the base (10), and at least three slides (11) are slidably arranged on the guide rod. A drive motor (12) is fixedly installed on each slide (11). The large arm (13) is slidably connected to the slide (11). The output shaft of the drive motor (12) is provided with a lead screw to drive the large arm (13). The guide roller (14) is rotatably arranged on the large arm (13). The push rod (15) is fixedly connected to the guide roller (14) for pressing down the workpiece.

8. The aircraft parts processing positioning and clamping device according to claim 7, characterized in that: The upper arm (13) forms an L-shaped rod, and the upper arm (13) has a threaded hole. The lead screw is connected to the threaded hole of the upper arm (13), and the guide roller (14) is rotatably set at the bottom of the upper arm (13).

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