Aluminum alloy wheel machining center flexible fixture

Abstract

The utility model belongs to the field of wheel processing, concretely relates to a flexible clamp of aluminum alloy wheel machining center, including bridge plate, centering clamping mechanism, step type sector clamping jaw and center detection mechanism, centering clamping mechanism is fixed in the bottom of bridge plate through clamping jaw connecting block, is set in the top of bridge plate through center detection mechanism through second cylinder, step type sector clamping jaw is fixedly connected with centering clamping mechanism through clamping jaw connecting block. The utility model changes center positioning mandrel into center detection device, changes single size clamping jaw into step type sector clamping jaw, realizes the positioning of different size products, clamps, and the aluminum wheel product center position coordinates detected are transmitted to machine tool through machine tool coordinate system automatic compensation function, realize the flexible processing of different products, not only greatly reduce production cost, shorten production preparation period, but also can greatly reduce clamp storage space, be favorable to on -the -spot management.

Description

Technical Field

[0001] This utility model belongs to the field of wheel processing, specifically relating to a flexible fixture for an aluminum alloy wheel processing center. Background Technology

[0002] As a key component of automobiles, wheels are increasingly diverse in appearance. The production of aluminum alloy wheels requires frequent model changes based on production plans. Machine tool fixtures, a crucial part of this process, not only consume significant changeover time, but traditional specialized fixtures also occupy substantial storage space, causing inconvenience for on-site management. Utility Model Content

[0003] This utility model proposes a flexible fixture for aluminum alloy wheel machining centers to solve the problems of cumbersome processes and large area occupation in the prior art.

[0004] To achieve the above objectives, the present invention proposes the following technical solution:

[0005] A flexible fixture for an aluminum alloy wheel machining center includes a bridge plate, a bridge plate flange, a centering clamping mechanism, a stepped fan-shaped gripper, and a center detection mechanism.

[0006] The bridge plate has a hole in the center, and the bridge plate flange is fixedly connected to the center of the bridge plate;

[0007] The centering clamping mechanism includes a base plate, a first cylinder, a claw connecting plate extending to four ends, and a claw connecting block; one side of the base plate is provided with the claw connecting plate and the first cylinder, and the four corners of the other side are provided with claw connecting blocks. The bottom of the claw connecting block is provided with a linear guide rail, and the claw connecting plate is connected to the claw connecting block through the linear guide rail.

[0008] The central testing mechanism includes a base, a second cylinder, and a conical mandrel; the bottom of the base is connected to the second cylinder, and guide columns are provided around the top of the base. The guide columns are connected to the second cylinder. A square outer shell is installed on the top of the base. Inside the outer shell, from bottom to top, a lower floating plate, a mandrel base, and an upper floating plate are arranged sequentially. The upper floating plate and the lower floating plate are fixedly connected to the mandrel base.

[0009] A sensor mounting bracket is installed around the outer perimeter of the housing. Inside the sensor mounting bracket, a horizontally mounted reset spring and a push rod are installed. The reset spring passes through the push rod, with one end in contact with the sensor mounting bracket and the other end in contact with the plane of the push rod. The tapered spindle passes through the housing and the upper floating plate and is fixedly connected to the spindle base.

[0010] The centering clamping mechanism is fixed to the bottom of the bridge plate by a jaw connecting block, and is set on the top of the bridge plate by a second cylinder through the center detection mechanism;

[0011] The stepped fan-shaped gripper and the centering clamping mechanism are fixedly connected by a gripper connecting block.

[0012] Preferably, it also includes a left L-shaped support plate and a right L-shaped support plate, which are respectively disposed on both sides of the bridge plate.

[0013] Preferably, the stepped fan-shaped gripper includes a first positioning surface and a second positioning surface distributed in a stepped manner.

[0014] The stepped fan-shaped gripper includes a first positioning surface and a second positioning surface that are distributed in a stepped manner.

[0015] Preferably, the hole in the center of the bridge plate, the bridge plate flange, the centering clamping mechanism, and the center detection mechanism are arranged coaxially.

[0016] Preferably, it also includes a claw connecting plate and a claw connecting rod, wherein the claw connecting plate is connected to the gripper connecting block through the claw connecting plate, the claw connecting rod and the linear guide rail.

[0017] Preferably, it also includes a slider, which is fixed on the gripper connecting block, and the gripper connecting block is connected to the linear guide rail through the slider.

[0018] Preferably, the bridge plate is provided with guide grooves, which are symmetrically distributed on the left and right sides of the stepped fan-shaped gripper.

[0019] Preferably, both the upper and lower floating disks are provided with circular holes, and steel balls are placed inside the circular holes.

[0020] Preferably, it also includes a first displacement sensor and a second displacement sensor, the first displacement sensor being fixed on a sensor mounting bracket, and the second displacement sensor passing through the sensor mounting bracket and contacting the spindle base.

[0021] Preferably, a guide post fixing plate is provided at the top of the guide post, and the tapered mandrel passes through the guide post fixing plate.

[0022] The advantages of this utility model are:

[0023] This utility model proposes a flexible fixture for an aluminum alloy wheel machining center. The center positioning mandrel is replaced with a center detection device, and the single-size gripper is replaced with a stepped fan-shaped gripper, which realizes the positioning and clamping of products of different sizes. The center position coordinates of the detected aluminum wheel products are transmitted to the machine tool through the automatic compensation function of the machine tool coordinate system, realizing flexible machining of different products. This not only greatly reduces production costs and shortens the production preparation cycle, but also greatly reduces the storage space of the fixture, which is beneficial to on-site management. Attached Figure Description

[0024] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a three-dimensional structural diagram of the flexible fixture for an aluminum alloy wheel machining center, viewed from the upper right.

[0026] Figure 2 This is a front view of the flexible fixture for an aluminum alloy wheel machining center.

[0027] Figure 3 This is a three-dimensional structural diagram of the central clamping mechanism in the flexible fixture of an aluminum alloy wheel machining center, viewed from the lower right.

[0028] Figure 4 This is a top view of the centering clamping mechanism in the flexible fixture of an aluminum alloy wheel machining center.

[0029] Figure 5 This is a top view of the central inspection mechanism in the flexible fixture of an aluminum alloy wheel machining center.

[0030] Figure 6 for Figure 5 A sectional view of section AA in the middle.

[0031] Figure 7 for Figure 5 A sectional view of section BB in the middle. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0033] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0034] Please see Figure 1 , 2 As shown, this utility model provides a flexible fixture for an aluminum alloy wheel machining center, including a left L-shaped support plate 1, a right L-shaped support plate 2, a bridge plate 3, a bridge plate flange 4, a central clamping mechanism 5, a stepped fan-shaped gripper 6, a guide groove 7, a central detection mechanism 8, a first displacement sensor 9, and a second displacement sensor 10.

[0035] The left L-shaped support plate 1 is fixedly connected to the left side of the bridge plate 3, and the right L-shaped support plate 2 is fixedly connected to the right side of the bridge plate 3.

[0036] The bridge flange 4 is fixedly connected to the center of the bridge plate 3.

[0037] like Figure 3 , 4 As shown, the centering clamping mechanism 5 is fixedly connected to the bridge plate 3 and is located below the bridge plate; the centering clamping mechanism 5 includes a base plate 501, a cylinder mounting plate 502, a first cylinder 503, a connecting column 504, a claw connecting rod plate 505, a claw connecting rod 506, a first cylinder foot bracket 507, a first cylinder piston 508, a linear guide rail 509, a slider 510, a gripper connecting block 511, and a bearing 512;

[0038] The base plate 501 is fixedly connected to the cylinder mounting plate 502 via a connecting column 504. The base plate 501 is connected to the cylinder mounting plate 502 via a first cylinder bracket 507, which in turn connects to the first cylinder 503. The base plate 501 is connected to the claw connecting plate 505 via a bearing 512, and the base plate 501 and the claw connecting plate 505 are coaxial. The claw connecting plate 505 has a cross structure, with each of its four ends connected to a gripper connecting block 511 via a gripper connecting rod 506. The first cylinder piston 508 is connected to one of the gripper connecting blocks 511. The slider 510 is located at the bottom of the base plate 501 and is fixedly connected to the corresponding gripper connecting block 511 at the other end. The slider 510 is mounted on a linear guide rail 509.

[0039] The two ends of the claw connecting rod 506 are respectively connected to the claw connecting plate 505 and the gripper connecting block 511 by pins.

[0040] The linear guide rail 509 and the slider 510 are symmetrically distributed along the diagonal of the base plate 501. The stepped fan-shaped grippers 6 and the central clamping mechanism 5 are fixedly connected by the gripper connecting block 511. The four stepped fan-shaped grippers 6 are evenly distributed around the center of the bridge plate 3.

[0041] The steps on the stepped fan-shaped gripper 6 include a first positioning surface 601 and a second positioning surface 602.

[0042] The guide groove 7 is fixedly connected to the bridge plate 3 and is symmetrically distributed on the left and right sides of the stepped fan-shaped gripper 6.

[0043] like Figure 6 , 7As shown, the central detection mechanism 8 is coaxially fixedly connected to the bridge flange 4. The central detection mechanism 8 includes a tapered spindle 801, a guide column fixing plate 802, a guide column 803, a housing 804, a sensor fixing bracket 805, a guide bushing 806, a base 807, a second cylinder connecting plate 808, a second cylinder 809, an upper floating plate 810, a lower floating plate 811, a second cylinder flange 812, a steel ball 813, a return spring 814, a push rod 815, and a spindle base.

[0044] The conical mandrel 801 can float radially, and the second cylinder connecting plate 808, under the action of the second cylinder 809, can drive the conical mandrel 801, the outer shell 804, and the base 807 to float up and down along the guide column 803.

[0045] The second cylinder 809 is coaxially connected to the bridge flange 4 via the second cylinder flange 812.

[0046] The guide post 803 is fixedly connected to the second cylinder flange 812 and is symmetrically distributed at the diagonal position; the second cylinder connecting plate 808 is connected to the piston of the second cylinder 809, and the guide post 803 passes through the circular holes around the second cylinder connecting plate 808.

[0047] A base 807 is mounted above the second cylinder connecting plate 808. Guide bushings 806 are installed around the base 807, and guide posts 803 pass through the guide bushings 806. The second cylinder connecting plate 808 and the base 807 can move up and down along the guide posts 803 under the action of the second cylinder 809. A square outer shell 804 is mounted above the base 807. Sensor fixing brackets 805 are installed around the outer perimeter of the outer shell 804. Inside the outer shell 804, from bottom to top, there are a lower floating plate 811 and a spindle. The base 816 and the upper floating disk 810 are fixedly connected to the mandrel base 816. The tapered mandrel 801 passes through the upper circular hole of the outer shell 804 and the central circular hole of the upper floating disk 810 and is fixedly connected to the mandrel base 816. The circular holes evenly distributed in the upper floating disk 810 and the lower floating disk 811 are filled with steel balls 813, which can roll freely. The guide post fixing plate 802 is installed above the guide post 803, and the tapered mandrel 801 passes through the central circular hole of the guide post fixing plate 802.

[0048] The sensor mounting bracket 805 is equipped with a horizontally mounted reset spring 814 and a push rod 815. The spring 814 passes through the push rod 815, with one end of the spring 814 in contact with the sensor mounting bracket 805 and the other end in contact with the plane of the push rod 815.

[0049] The first displacement sensor 9 passes through the sensor fixing bracket 805 and contacts the spindle base 816. The first displacement sensor 9 is fixed on the sensor fixing bracket 805 and is parallel to the X-axis direction of the machining center.

[0050] The second displacement sensor 10 passes through the sensor fixing bracket 805 and contacts the spindle base 816. The second displacement sensor 10 is fixed on the sensor fixing bracket 805 and is parallel to the Y-axis direction of the machining center. Example

[0051] The assembly method of the flexible fixture for the aluminum alloy wheel machining center described in this utility model is as follows:

[0052] The left L-shaped support plate 1 is installed on the left side of the bridge plate 3, and the right L-shaped support plate 2 is installed on the right side of the bridge plate 3. Both the left L-shaped support plate 1 and the right L-shaped support plate 2 have interfaces for connecting to the machining center's flipping mechanism.

[0053] The bridge plate flange 4 is installed above the bridge plate 3, coaxial with the center hole of the bridge plate, and three fixing bolts are used to position the bridge plate flange 4 in the circumferential direction. The centering clamping mechanism 5 is installed below the bridge plate 3, coaxial with the center hole of the bridge plate. The gripper connecting block 511 corresponds to the slot direction evenly distributed along the central circumferential direction of the bridge plate 3. A stepped fan-shaped gripper 6 is installed above the gripper connecting block 511, which can move radially along the center of the bridge plate. Each stepped fan-shaped gripper 6 has a guide groove 7 on both sides that is fixedly connected to the bridge plate 3, which provides guidance for the movement of the stepped fan-shaped gripper 6.

[0054] The central detection mechanism 8 is installed above the bridge flange 4, and the two are coaxial. The second cylinder 809 is coaxially connected to the bridge flange 4 through the second cylinder flange 812. The guide column 803 is fixedly connected to the second cylinder flange 812 and is symmetrically distributed at the diagonal position. The second cylinder connecting plate 808 is connected to the second cylinder piston. The guide column 803 passes through the circular holes around the second cylinder connecting plate 808. A base 807 is installed above the second cylinder connecting plate 808. Guide bushings 806 are installed around the base 807. The guide column 803 passes through the guide bushings 806. The second cylinder connecting plate 808 and the base 807 can move up and down along the guide column 803 under the action of the second cylinder 809. A square outer shell 804 is installed above the base 807. Sensor fixing brackets are installed around the outer perimeter of the outer shell 804. Inside the outer casing 804, from bottom to top, are a lower floating disk 811, a spindle base 816, and an upper floating disk 810. The upper floating disk 810 and the lower floating disk 811 are fixedly connected to the spindle base 816. The conical spindle 801 passes through the upper circular hole of the outer casing 804 and the central circular hole of the upper floating disk 810, and is fixedly connected to the spindle base 816. The evenly distributed circular holes of the upper floating disk 810 and the lower floating disk 811 contain steel balls 813, which can roll freely. Inside the sensor fixing bracket 805, there is a horizontally installed reset spring 814 and a push rod 815. The spring 814 passes through the push rod, with one end contacting the sensor fixing bracket 805 and the other end contacting the plane of the push rod 815. The guide post fixing plate 802 is installed above the guide post 803, and the conical spindle 801 passes through the central circular hole of the guide post fixing plate 802.

[0055] The first displacement sensor 9 passes through the sensor fixing bracket 805 and contacts the spindle base 816. The first displacement sensor 9 is fixed on the sensor fixing bracket 805 and is parallel to the X-axis direction of the machining center. The second displacement sensor 10 passes through the sensor fixing bracket 805 and contacts the spindle base 816. The second displacement sensor 10 is fixed on the sensor fixing bracket 805 and is parallel to the Y-axis direction of the machining center.

[0056] The specific operation flow of the flexible fixture for the aluminum alloy wheel machining center described in this utility model is as follows:

[0057] Step 1: When the clamp is released, the first cylinder 503 extends, the central clamping mechanism 5 is released, the second cylinder 809 retracts, and the central detection mechanism 8 is at its lowest point.

[0058] Step 2: Place the wheel in the wheel. Depending on the wheel size and type, the wheel flange positioning surface contacts the first positioning surface 601 or the second positioning surface 602 of the stepped fan-shaped gripper 6 to complete the axial positioning.

[0059] Step 3: The first cylinder 503 retracts, and the centering clamping mechanism 5 centers and clamps the wheel.

[0060] Step 4: The second cylinder 809 extends, and under the guidance of the tapered spindle, the central detection mechanism 8 floats to a position coaxial with the center hole of the wheel.

[0061] Step 5: The first displacement sensor 9 and the second displacement sensor 10 measure the offset of the tapered mandrel in the X-axis direction and the Y-axis direction, respectively, and automatically compensate the offset to the machine tool coordinate system to complete the radial positioning of the wheel product.

[0062] Step 6, machine tool processing;

[0063] Step 7: After processing is completed, the second cylinder 809 retracts, the central detection mechanism 8 descends to the lowest point, and the tapered mandrel returns to its initial position under the action of the return spring.

[0064] Step 8: The first cylinder 503 extends, the central clamping mechanism 5 is released, and the processed wheel is taken out.

[0065] Step 9, repeat steps 1 through 8.

[0066] The flexible fixture for aluminum alloy wheel machining centers described in this utility model changes the positioning method of existing machining center fixtures by replacing the central positioning mandrel with a central detection device and the single-size gripper with a stepped fan-shaped gripper, thereby enabling the positioning and clamping of products of different sizes. Through the automatic compensation function of the machine tool coordinate system, the detected center position coordinates of the aluminum wheel product are transmitted to the machine tool, realizing flexible machining of different products. This not only greatly reduces production costs and shortens the production preparation cycle, but also significantly reduces the fixture storage space, which is beneficial to on-site management.

[0067] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. An aluminum alloy wheel machining center flexible fixture, characterized in that, It comprises a bridge plate, a bridge plate flange, a center clamping mechanism, a stepped sector-shaped clamping jaw and a center detection mechanism. The bridge plate center is provided with a hole, and the bridge plate flange is fixedly connected with the center of the bridge plate. The center clamping mechanism comprises a bottom plate, a first air cylinder, a claw hand connecting plate with four ends and a clamping jaw connecting block. The center detection mechanism comprises a base, a second air cylinder and a conical mandrel. The outer side of the shell is provided with a sensor fixing bracket, and the sensor fixing bracket is internally provided with a horizontally installed reset spring and a jacking rod. The center clamping mechanism is fixed at the bottom of the bridge plate through the clamping jaw connecting block, and the center detection mechanism is arranged at the top of the bridge plate through the second air cylinder. The stepped sector-shaped clamping jaw is fixedly connected with the center clamping mechanism through the clamping jaw connecting block.

2. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, It also comprises a left L-shaped supporting plate and a right L-shaped supporting plate.

3. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, The stepped sector-shaped clamping jaw comprises a first positioning surface and a second positioning surface distributed in steps.

4. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, The hole in the center of the bridge plate, the bridge plate flange, the center clamping mechanism and the center detection mechanism are coaxially arranged.

5. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, It also comprises a claw hand connecting plate and a claw hand connecting rod.

6. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, It also comprises a sliding block fixed on the clamping jaw connecting block.

7. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, The bridge plate is provided with a guide groove, and the guide groove is symmetrically distributed on the left and right sides of the stepped sector-shaped clamping jaw.

8. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, The upper floating disc and the lower floating disc are evenly provided with circular holes, and the circular holes are internally provided with steel balls.

9. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, It also comprises a first displacement sensor and a second displacement sensor.

10. An aluminum alloy wheel machining center flexible fixture as defined in claim 1 wherein, The top of the guide column is provided with a guide column fixing plate, and the conical mandrel passes through the guide column fixing plate.

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