Workpiece automatic alignment clamping platform

Abstract

The utility model provides a workpiece automatic alignment clamping platform belongs to the technical field of automatic production line, including rotary table, rotary table upper portion is connected with zero point connecting plate, zero point connecting plate upper plane is uniformly distributed with zero point quick change, zero point quick change upper portion is used for supporting sub -disc tooling, zero point connecting plate is evenly arranged with a plurality of groups of power drive unit in a circle, sub -disc tooling is evenly arranged with a plurality of groups of clamping slide platform claw corresponding with power drive unit in a circle, clamping slide platform claw is connected with sub -disc tooling through transmission mechanism, the support of rotary table one side is fixedly connected with the precision detection mechanism of not rotating with rotary table. Through rotary table drive workpiece rotates on sub -disc tooling, displacement sensor contacts workpiece, through the point position data of corresponding clamping slide platform claw of grabbing, motor controls each clamping slide platform claw advances and retreats, realizes the automatic alignment and automatic clamping of workpiece, realizes the demand of automatic production, the alignment precision data of workpiece is not influenced by human intervention, and the alignment precision is high.

Description

Technical Field

[0001] This invention belongs to the field of automated production line technology, specifically relating to an automatic workpiece alignment and clamping platform. Background Technology

[0002] In current automated production lines, such as machining parts on CNC machine tools, manual alignment of the workpiece is typically performed on a rotary table, followed by clamping with fixtures. This existing technology has the following drawbacks: 1. Manual alignment is time-consuming and labor-intensive; the alignment accuracy is greatly affected by human intervention, resulting in inaccuracies. 2. Large product rotation diameters make it difficult to establish reference points, increasing the difficulty of manual operation. 3. Current technology cannot achieve automated alignment and clamping of workpieces, failing to meet the requirements of automated production. 4. Current technology cannot implement quick-change functionality for sub-disc tooling. Based on these reasons, improvements are proposed. Summary of the Invention

[0003] The technical problem solved by this invention is to provide an automatic workpiece alignment and clamping platform. The purpose of this invention is to eliminate the influence of human factors on the accuracy of manual alignment data and obtain more accurate alignment data; to provide an automatic alignment and clamping solution for automated production of products and solve the problem of difficult alignment of large-diameter workpieces.

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

[0005] An automatic workpiece alignment and clamping platform includes a rotary table. A zero-point connecting plate is connected to the upper part of the rotary table. Zero-point quick-change switches are evenly distributed on the upper surface of the zero-point connecting plate. The upper part of the zero-point quick-change switches supports a connecting sub-plate fixture. The sub-plate fixture is equipped with pull studs for engaging with the zero-point quick-change switches. Multiple sets of power drive units are evenly distributed around the circumference of the zero-point connecting plate. Multiple sets of clamping slide jaws, corresponding to the power drive units, are evenly distributed around the circumference of the sub-plate fixture. The clamping slide jaws are connected to the sub-plate fixture via a transmission mechanism. A precision detection mechanism, which does not rotate with the rotary table, is fixedly connected to one side of the support of the rotary table. When the sub-plate fixture and the rotary table are engaged by the zero-point quick-change switches, the output of each power drive unit cooperates with the input of the corresponding clamping slide jaw, and based on the detection data from the precision detection mechanism, drives the clamping slide jaw to move horizontally radially along the sub-plate fixture via the transmission mechanism.

[0006] The rotary table includes a rotating bracket, on which a turntable is supported by a turntable bearing. A turntable drive motor is fixedly installed on the rotating bracket, and the turntable drive motor drives the turntable to rotate through a gear ring structure. The zero-point connecting plate is placed on the upper part of the turntable and is fixedly connected to the turntable.

[0007] Furthermore, the power drive unit includes a sliding frame, a lifting cylinder, a drive motor, a reducer, and a drive gear. The lifting cylinder is fixedly connected to the zero-point connecting plate, and the sliding frame is fixedly connected to the lifting cylinder. The drive motor and the reducer are fixed on the sliding frame. The output of the drive motor is connected to the input of the reducer, and the drive gear is fixed at the output end of the reducer.

[0008] Furthermore, the transmission mechanism of the clamping slide jaw includes a screw, the two ends of which are supported by bearing seats and bearings at corresponding positions around the sub-disc of the sub-disc tooling. The lower part of the clamping slide jaw is screwed to the screw by a nut. A driven gear is fixed to the outer end of the screw. The driving gear meshes with or disengages from the driven gear under the lifting action of the lifting cylinder. The screw adopts a triangular thread or a T-shaped thread.

[0009] Furthermore, the precision detection mechanism includes a column, the lower part of which is fixedly connected to a rotating bracket, and the upper part of the rotating bracket is connected to a Y-axis module unit that can move up and down. The upper part of the Y-axis module unit is connected to an X-axis module unit in a cross shape, and the front end of the X-axis module unit is connected to a displacement sensor.

[0010] Furthermore, both the Y-axis module unit and the X-axis module unit are linear modules.

[0011] Advantages of this invention compared to existing technologies:

[0012] 1. This solution uses a rotary table to drive the workpiece to rotate on the sub-disc fixture. The displacement sensor contacts the workpiece and captures the position data of the corresponding clamping slide jaws. The motor controls the forward and backward movement of each clamping slide jaw to achieve automatic workpiece alignment and clamping, meeting the needs of automated production. Furthermore, the workpiece alignment accuracy is not affected by human intervention and has high alignment accuracy.

[0013] 2. In this solution, the sub-disc fixture used to fix the workpiece and the rotary table are connected by a zero-point quick-change device, which enables the workpiece sub-disc fixture to have quick-change function and realize automatic positioning, automatic locking and automatic unlocking functions.

[0014] 3. In this solution, the driving gears of each drive motor on the rotary table and the corresponding driven gears on the workpiece's sub-plate tooling move up and down through the lifting cylinder to achieve gear engagement and disengagement, which perfectly matches the quick-change structure function of the sub-plate tooling and the rotary table.

[0015] 4. In this solution, the clamping slides on the sub-plate tooling are driven by triangular thread screws or T-shaped thread screws, which have a self-locking function, making the clamping slides of the sub-plate tooling have a large stroke and can adapt to various specifications of parts.

[0016] 5. In this solution, the clamping slide jaws of the sub-disc tooling are controlled by a servo motor and adopt a servo torque mode. The output torque is controllable, preventing damage and deformation to the workpiece.

[0017] 6. In this solution, the rotary table is a mechanism that uses tooling to automatically align and clamp workpieces offline. After the parts on the sub-plate tooling are aligned, they can be quickly detached and transported to vertical CNC machine tools, gantry CNC machine tools, horizontal CNC machine tools and other equipment for automated production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 This is a top view of the structure of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of Part I of the structure. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Please see Figures 1-4 The embodiments of the present invention are described in detail below.

[0025] Example: Automatic workpiece alignment and clamping platform, see reference. Figure 1As shown, it includes a rotary worktable 1, with a zero-point connecting plate 6 connected to the upper part of the rotary worktable 1. Four zero-point quick-changes 7 are evenly distributed on the upper plane of the zero-point connecting plate 6. The upper part of the zero-point quick-changes 7 is used to support the sub-plate fixture 8. The sub-plate fixture 8 is provided with pull studs for engaging with the zero-point quick-changes 7. With the cooperation of the zero-point quick-changes, it can automatically position, lock, and unlock.

[0026] The zero-point connecting plate 6 has four sets of power drive units 11 evenly distributed around its circumference. (See reference) Figure 2 As shown, the sub-disc tooling 8 is provided with four sets of clamping slide jaws 17 corresponding to the power drive unit 11, and the clamping slide jaws 17 are connected to the sub-disc tooling 8 through a transmission mechanism. The rotary table 1 is fixedly connected to one side of the support of the precision detection mechanism 20, which does not rotate with the rotary table.

[0027] When the sub-disc fixture 8 and the rotary table 1 are combined by the zero-point quick change 7, the output of each power drive unit 11 is matched with the input of the corresponding clamping slide jaw 17, and the clamping slide jaw 17 is driven to move horizontally and radially along the sub-disc fixture 8 through the transmission mechanism according to the detection data of the precision detection mechanism 20.

[0028] In one embodiment, see Figure 1 As shown, the rotary table 1 includes a rotating bracket 2, and a turntable 3 is supported on the upper part of the rotating bracket 2 by a turntable bearing 4. A turntable drive motor 5 is fixedly installed on the rotating bracket 2, and the turntable drive motor 5 drives the turntable 3 to rotate through a gear ring structure. The zero-point connecting plate 6 is placed on the upper part of the turntable 3 and is fixedly connected to the turntable 3.

[0029] In one embodiment, see Figure 3 and 4 As shown, the power drive unit 11 includes a sliding frame 12, a lifting cylinder 13, a drive motor 14, a reducer 15, and a drive gear 16. The lifting cylinder 13 is fixedly connected to the zero-point connecting plate 6, and the sliding frame 12 is fixedly connected to the lifting cylinder 13. The drive motor 14 and the reducer 15 are fixed on the sliding frame 12. The output of the drive motor 14 is connected to the input of the reducer 15, and the drive gear 16 is fixed to the output end of the reducer 15. The lifting cylinder 13 drags the sliding frame 12 up and down, which can engage the drive gear 16 and the driven gear. The four power drive units are independently controlled, enabling the four clamping slide jaws to move back and forth. The four drive motors 14 are servo motors, with controllable output torque to prevent damage or deformation to the workpiece.

[0030] In one embodiment, see Figure 1As shown, the transmission mechanism of the clamping slide jaw 17 includes a screw 18. The two ends of the screw 18 are supported by bearing seats and bearings at corresponding positions around the sub-disc 9 of the sub-disc tooling 8. The lower part of the clamping slide jaw 17 is screwed to the screw 18 by a nut. A driven gear 19 is fixed to the outer end of the screw 18. The driving gear 16 meshes with or disengages from the driven gear 19 under the lifting action of the lifting cylinder 13.

[0031] Preferably, the screws 18 of the four clamping slide jaws 17 are driven by triangular threaded screws or T-shaped threaded screws, and driven gears are installed at the ends of the screws. When the driving gear and the driven gear mesh, the clamping slide jaws can move back and forth. It features a self-locking function, allowing for a large stroke of the daughter plate tooling clamping slide, and can adapt to various specifications of parts.

[0032] In one embodiment, see Figure 1 As shown, the precision detection mechanism 20 includes a column 21, the lower part of which is fixedly connected to a rotating bracket 2. A vertically movable Y-axis module unit 22 is connected to the upper part of the rotating bracket 2. An X-axis module unit 23 is cross-connected to the upper part of the Y-axis module unit 22. A displacement sensor 24 is connected to the front end of the X-axis module unit 23. With the adjustment of the Y-axis module unit 22 and the X-axis module unit 23, the displacement sensor 24 can move radially along the workpiece.

[0033] In this implementation method, the workpiece alignment principle on the sub-disc tooling adopts a displacement sensor equipped with linear modules in the radial and vertical directions to detect the runout of the outer diameter of the workpiece. The detection data is fed back to the system to control the drive motor to achieve automatic alignment.

[0034] Preferably, both the Y-axis module unit 22 and the X-axis module unit 23 are linear modules.

[0035] Working Principle: When the rotary table 1 and the sub-plate fixture 8 are engaged by the zero-point quick changer 7, the lifting cylinder 13 pushes the drive gear 16 and driven gear 19, causing the X-axis module unit 23 to move radially and push the displacement sensor 24 to contact the workpiece surface. The turntable drive motor 5 drives the turntable 3 to rotate clockwise one revolution. The displacement sensor 24 records the highest point values ​​at the positions of the four clamping slide jaws 17. Through calculation and comparison, the four drive motors 14 drive the four clamping slide jaws 17 to move according to the corresponding coordinate values, causing the center position of the workpiece to shift. The turntable rotates counterclockwise one revolution, and the above actions are repeated multiple times to automatically align the workpiece. The lifting cylinder 13 descends, the alignment is completed, the zero-point quick changer 7 automatically unlocks, and the sub-plate fixture 8 can be transferred to the automatic processing equipment via the GRV transfer machine to achieve automatic production.

[0036] This device enables automatic workpiece alignment and clamping, meeting the needs of automated production; moreover, the workpiece alignment accuracy data is not affected by human intervention, resulting in high alignment accuracy.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic workpiece alignment and clamping platform, characterized in that: The system includes a rotary table (1), a zero-point connecting plate (6) connected to the upper part of the rotary table (1), zero-point quick-changes (7) evenly distributed on the upper plane of the zero-point connecting plate (6), the upper part of the zero-point quick-changes (7) is used to support the connecting sub-plate fixture (8), the sub-plate fixture (8) is provided with pull studs for engaging with the zero-point quick-changes (7); multiple sets of power drive units (11) are evenly distributed around the circumference of the zero-point connecting plate (6), multiple sets of clamping slide jaws (17) corresponding to the power drive units (11) are evenly distributed around the circumference of the sub-plate fixture (8), the clamping slide jaws (17) are connected to the sub-plate fixture (8) through a transmission mechanism, and a precision detection mechanism (20) that does not rotate with the rotary table (1) is fixedly connected to one side of the support of the rotary table (1). When the sub-disc tooling (8) and the rotary table (1) are combined by the zero-point quick change (7), the output of each power drive unit (11) cooperates with the input of the corresponding clamping slide jaw (17) and drives the clamping slide jaw (17) to move horizontally and radially along the sub-disc tooling (8) through the transmission mechanism according to the detection data of the precision detection mechanism (20). The power drive unit (11) includes a sliding frame (12), a lifting cylinder (13), a drive motor (14), a reducer (15), and a drive gear (16). The lifting cylinder (13) is fixedly connected to the zero-point connecting plate (6). The sliding frame (12) is fixedly connected to the lifting cylinder (13). The drive motor (14) and the reducer (15) are fixed on the sliding frame (12). The output of the drive motor (14) is connected to the input of the reducer (15). The drive gear (16) is fixed at the output end of the reducer (15). The transmission mechanism of the clamping slide jaw (17) includes a screw (18). The two ends of the screw (18) are supported by bearing seats and bearings at corresponding positions around the sub-disc (9) of the sub-disc tooling (8). The lower part of the clamping slide jaw (17) is screwed with the screw (18) through a nut. The outer end of the screw (18) is fixed with a driven gear (19). The driving gear (16) meshes with or disengages from the driven gear (19) under the lifting action of the lifting cylinder (13). The screw (18) adopts a triangular thread or a T-shaped thread.

2. The workpiece automatic alignment and clamping platform according to claim 1, characterized in that: The rotary table (1) includes a rotating bracket (2), and a turntable (3) is supported on the upper part of the rotating bracket (2) by a turntable bearing (4). A turntable drive motor (5) is fixedly installed on the rotating bracket (2), and the turntable drive motor (5) drives the turntable (3) to rotate through a gear ring structure. The zero-point connecting plate (6) is placed on the upper part of the turntable (3) and is fixedly connected to the turntable (3).

3. The workpiece automatic alignment and clamping platform according to claim 2, characterized in that: The precision detection mechanism (20) includes a column (21), the lower part of which is fixedly connected to a rotating bracket (2), the upper part of which is connected to a Y-axis module unit (22) that can move up and down, the upper part of which is connected to an X-axis module unit (23) in a cross shape, and the front end of the X-axis module unit (23) is connected to a displacement sensor (24).

4. The workpiece automatic alignment and clamping platform according to claim 3, characterized in that: Both the Y-axis module unit (22) and the X-axis module unit (23) are linear modules.

Images