A side-top auxiliary positioning tie rod clamping device

Abstract

This utility model provides a side-top auxiliary positioning pull rod clamping device, including a pull rod pull-down clamping device and a side-push auxiliary positioning device. The positioning seat has a positioning groove to accommodate the workpiece. The first cylinder is fixed to the rear side of the bridge plate. The insert block and the cylinder rod of the first cylinder are fixed. The insert block and the positioning groove of the positioning seat are slidably connected. The bridge plate has a limiting hole. The limiting hole and the positioning seat are matched. The support block is fixed to the lower end of the limiting hole. The housing of the second cylinder and the lower end of the support block are fixed. The gripper and the cylinder rod of the second cylinder are fixed. The outer side of the upper part of the gripper is constrained and guided by the limiting hole. The spring is fixed in the middle of the gripper. The pull rod passes through the workpiece and the gripper. The gripper limits the pull rod. The head of the pull rod is fixedly connected to the cylinder rod of the second cylinder. The tail of the pull rod is limited by the workpiece through hole. This utility model consists of a pull rod pull-down clamping device and a side-push auxiliary positioning device. It is powered by compressed air connected to the machine tool and can realize the functions of initial positioning, clamping, pressing, auxiliary support and interlocking.

Description

Technical Field

[0001] This utility model relates to the field of parts processing technology, and in particular to a side-top auxiliary positioning tie rod clamping device. Background Technology

[0002] Precision workpiece processing is an important guarantee for driving product transformation and upgrading. Based on the structural characteristics of the workpiece and the technical parameters required for processing, the processing factory needs to customize or manufacture equipment that is suitable for the workpiece being processed. Among them, the pull rod clamping device that can realize side top auxiliary positioning is indispensable.

[0003] The clamping and positioning devices of existing CNC machining centers generally adopt a unidirectional clamping mechanical structure. This clamping structure cannot adapt to the machining of irregularly shaped workpieces. Therefore, it is still necessary to further improve the structure of the existing clamping and positioning devices to adapt to workpieces with different shapes and structures. Summary of the Invention

[0004] The purpose of this invention is to provide a side-top auxiliary positioning tie rod clamping device, which can solve the problems of preventing loosening after clamping workpieces with special irregular shapes, preventing deformation during processing, and the difficulty of clamping by robotic arms.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A side-top auxiliary positioning pull rod clamping device includes a pull rod pull-down clamping device and a side-push auxiliary positioning device. The pull rod pull-down clamping device includes a pull rod, a gripper, a spring, a support block, and a second cylinder. The side-push auxiliary positioning device includes a pressure plate, a positioning seat, an insert block, a first cylinder, and a bridge plate. The first and second cylinders are controlled by pneumatic switches. The positioning seat is fixed to the center of the upper end of the bridge plate. The upper center of the positioning seat has a positioning groove for accommodating a workpiece. The first cylinder is fixed to the rear side of the upper end of the bridge plate. The rear end of the insert block is fixedly connected to the cylinder rod of the first cylinder. The insert block and the positioning groove of the positioning seat are slidably connected in the front-rear direction. When the workpiece is moved, it is held against the rear side. The bridge plate has a limiting hole running vertically through the center. The limiting hole and the positioning seat are matched. The support block is fixed circumferentially to the outer edge of the lower end of the limiting hole. The housing of the second cylinder is fixedly connected to the lower end of the support block. The gripper is located in the cavity formed by the support block and the limiting hole. The lower part of the gripper is fixedly connected to the cylinder rod of the second cylinder. The outer side of the upper part of the gripper is constrained and guided by the inner wall of the limiting hole. The spring is fixed horizontally to the middle of the gripper. The pull rod runs vertically through the workpiece and the gripper. The inner side of the gripper limits the pull rod. The head of the pull rod is fixedly connected to the cylinder rod of the second cylinder. The tail of the pull rod is limited by the through hole of the workpiece.

[0006] Furthermore, a pressure plate is provided on the rear side of the positioning seat along the front-rear direction, and the front and rear ends of the pressure plate are locked to the upper end of the positioning seat by screws, and the upper end of the pressure plate is a limiting insert.

[0007] Furthermore, a fixing plate is provided on the rear side of the upper end of the bridge plate, and the fixing plate is locked to the upper end of the bridge plate by screws. The first cylinder is installed on the upper end of the bridge plate through the fixing plate.

[0008] Furthermore, a connector is fixedly provided on the cylinder rod of the second cylinder, and the grippers are installed on both sides of the connector by means of pins.

[0009] Furthermore, the gripper has a spring hole in the middle, and the two ends of the spring are installed in the spring hole.

[0010] This utility model consists of a pull rod downward clamping device and a side push auxiliary positioning device. It is powered by compressed air connected to the machine tool and can realize initial positioning, clamping, pressing, auxiliary support and interlocking functions. It is suitable for aluminum die-casting parts, casting parts and powder metallurgy parts, and is used to realize the positioning, clamping and fixing of workpieces with stable working state.

[0011] The upper part of the gripper of this utility model is constrained and guided by the inner wall of the limiting hole to ensure stable and reliable clamping action. The upper part of the gripper moves axially along the limiting hole under the drive of the cylinder to clamp or release the workpiece. The whole structure is compact and the positioning is accurate, making it suitable for rapid clamping scenarios in automated assembly lines. Attached Figure Description

[0012] Figure 1 This is a blasting diagram of the present invention; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a side view of the present invention.

[0013] Figure label: 1. Workpiece, 2. Tie rod, 3. Pressure plate, 4. Positioning seat, 5. Insert block 6. First cylinder, 7. Fixed plate, 8. Bridge plate, 9. Clamping jaws, 10. Spring. 11 Connector, 12 Support block, 13 Second cylinder, 14 Limiting hole. Detailed Implementation

[0014] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0015] This embodiment discloses a side-top auxiliary positioning tie rod clamping device, such as Figure 1 As shown, it includes a pull rod pull-down clamping device and a side push auxiliary positioning device. The pull rod pull-down clamping device includes a pull rod 2, a gripper 9, a spring 10, a support block 12, and a second cylinder 13. The side push auxiliary positioning device includes a pressure plate 3, a positioning seat 4, an insert block 5, a first cylinder 6, and a bridge plate 8.

[0016] like Figure 2 As shown, the positioning seat 4 is fixed at the center of the upper end of the bridge plate 8. The upper center of the positioning seat 4 is provided with a positioning groove, which accommodates the workpiece 1. A fixing plate 7 is provided on the rear side of the upper end of the bridge plate 8. The fixing plate 7 is locked to the upper end of the bridge plate 8 by screws. The first cylinder 6 is installed on the upper end of the bridge plate 8 through the fixing plate 7. The rear end of the insert block 5 is fixedly connected to the cylinder rod of the first cylinder 6. The insert block 5 and the positioning groove of the positioning seat 4 are slidably connected in the front-back direction. When the insert block 5 moves forward, it pushes against the rear side of the workpiece 1.

[0017] A pressure plate 3 is provided on the rear side of the positioning seat 4 along the front-back direction. The front and rear ends of the pressure plate 3 are locked to the upper end of the positioning seat 4 by screws. When the insert 5 is inserted into the gap between the pressure plate 3 and the bottom surface of the positioning groove, the pressure plate 3 limits the upper end of the insert 5 to prevent the insert 5 from tilting and deviating from the track of the positioning groove.

[0018] like Figure 3 As shown, a limiting hole 14 is provided through the center of the bridge plate 8, and the limiting hole 14 and the positioning seat 4 are matched. The support block 12 is fixed circumferentially on the outer edge of the lower end of the limiting hole 14. The housing of the second cylinder 13 is fixedly connected to the lower end of the support block 12. The gripper 9 is located in the cavity formed by the support block 12 and the limiting hole 14. A connector 11 is fixed on the cylinder rod of the second cylinder 13. The gripper 9 is installed on both sides of the connector 11 by pins. The outer side of the upper part of the gripper 9 is constrained and guided by the inner wall of the limiting hole 14.

[0019] Spring 10 is fixed horizontally in the middle of gripper 9. Gripper 9 has a spring hole in the middle. Both ends of spring 10 are installed in the spring hole in the middle of gripper 9. Spring 10 pushes gripper 9 open so that the upper outer side of gripper 9 overlaps with the inner wall of the limiting groove in the middle of bridge plate.

[0020] The pull rod 2 passes through the workpiece 1 and the gripper 9 from top to bottom. The pull rod 2 is limited by the inner side of the gripper 9. The head of the pull rod 2 is fixedly connected to the cylinder rod of the second cylinder 13. The tail of the pull rod 2 is limited by the through hole of the workpiece 1. The pull rod 2 is placed at the upper center position of the workpiece 1. The bottom plane of the tail of the pull rod 2 coincides with the upper surface of the through hole of the workpiece 1. The diameter part of the pull rod 2 passes through the center hole of the workpiece 1 and the bridge plate 8. The middle part of the pull rod 2 is located in the middle clamping position of the gripper 9.

[0021] The device in this embodiment is an auxiliary workpiece positioning and clamping device for machining center equipment. The power source is pneumatic, and the first cylinder 6 and the second cylinder 6 are both controlled by pneumatic switches.

[0022] When in use, the pneumatic switch is clicked for the first time. At this time, the cylinder rod of the first cylinder 6 is in the retracted state. Under the drive of the first cylinder 6, the insertion block 5 is at a certain distance from the positioning groove on the positioning seat 4, which does not affect the placement of the workpiece 1. The cylinder rod of the second cylinder 13 is in the ejected state. The gripper 9 is installed on the upper part of the connector 11, forming two movable joints. The outer side of the bottom arc of the gripper 9 is located on the inner side of the support block 12. The support block 12 does not constrain the gripper 9. The spring 10 is in the ejected state, so that the gripper 9 is attached to the inner wall of the limiting hole 14 of the bridge plate 8. An opening is formed in the middle of the gripper 9, which does not affect the insertion of the pull rod 2. Place the workpiece 1 into the positioning slot of the positioning seat 4, and then insert the pull rod 2 into the center hole of the workpiece 1 so that the bottom plane of the tail of the pull rod 2 coincides with the upper plane of the workpiece 1. The front end of the pull rod 2 passes through the bridge plate 8 and is located in the middle position of the gripper 9. The above structure is the initial state of the device in this embodiment.

[0023] When the pneumatic switch is clicked for the second time, the cylinder rod of the first cylinder 6 extends, driving the insert block 5 to press against the workpiece 1 from the side, so that the workpiece 1 fits against the positioning surface on the positioning seat 4. At the same time, the cylinder rod of the second cylinder 13 extends, driving the gripper 9 to move downward. During the downward movement, the gripper 9 is engaged in the limiting groove on the inner side of the support block 12. Under the constraint of the limiting groove, the gripper 9 closes inward. The spring 10 is in a contracted state under the pressure of the gripper 9. The head of the gripper 9 forms a groove to lock the head of the pull rod 2, driving the pull rod 2 to move downward until the pull rod 2 pulls the workpiece 1 tight.

[0024] Clicking the pneumatic switch for the third time causes the cylinder rods of the first cylinder 6 and the second cylinder 13 to retract, restoring the device to its initial state. The pull rod 2 and the workpiece 1 are then removed in sequence, thus completing one full operation.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A side-top auxiliary positioning tie rod clamping device, characterized in that, The device includes a pull-down clamping device and a side-push auxiliary positioning device. The pull-down clamping device includes a pull rod (2), a gripper (9), a spring (10), a support block (12), and a second cylinder (13). The side-push auxiliary positioning device includes a pressure plate (3), a positioning seat (4), an insert block (5), a first cylinder (6), and a bridge plate (8). The first cylinder (6) and the second cylinder (13) are controlled by a pneumatic switch. The positioning seat (4) is fixed at the center of the upper end of the bridge plate (8). The upper center of the positioning seat (4) is provided with a positioning groove, which accommodates the workpiece (1). The first cylinder (6) is fixed at the rear side of the upper end of the bridge plate (8). The rear end of the insert block (5) is fixedly connected to the cylinder rod of the first cylinder (6). The positioning groove of the insert block (5) and the positioning seat (4) are slidably connected in the front-back direction. When the insert block (5) moves forward, it presses against the rear side of the workpiece (1). A limiting hole (14) is provided vertically through the center of the plate (8). The limiting hole (14) and the positioning seat (4) are positioned to match. The support block (12) is fixed circumferentially to the outer edge of the lower end of the limiting hole (14). The housing of the second cylinder (13) is fixedly connected to the lower end of the support block (12). The gripper (9) is located in the cavity formed by the support block (12) and the limiting hole (14). The lower part of the gripper (9) and the air of the second cylinder (13) are connected. The cylinder rod is fixedly connected. The outer side of the upper part of the gripper (9) is constrained and guided by the inner wall of the limiting hole (14). The spring (10) is fixed in the middle of the gripper (9) in the horizontal direction. The pull rod (2) passes through the workpiece (1) and the gripper (9) from top to bottom. The inner side of the gripper (9) limits the pull rod (2). The head of the pull rod (2) is fixedly connected to the cylinder rod of the second cylinder (13). The tail of the pull rod (2) is limited by the through hole of the workpiece (1).

2. The side-top auxiliary positioning tie rod clamping device according to claim 1, characterized in that, The positioning seat (4) has a pressure plate (3) on its rear side along the front-back direction. The front and rear ends of the pressure plate (3) are locked to the upper end of the positioning seat (4) by screws. The pressure plate (3) limits the upper end of the insertion block (5).

3. The side-top auxiliary positioning tie rod clamping device according to claim 1, characterized in that, A fixing plate (7) is provided on the rear side of the upper end of the bridge plate (8). The fixing plate (7) is locked to the upper end of the bridge plate (8) by screws. The first cylinder (6) is installed on the upper end of the bridge plate (8) through the fixing plate (7).

4. The side-top auxiliary positioning tie rod clamping device according to claim 1, characterized in that, A connector (11) is fixedly provided on the cylinder rod of the second cylinder (13), and the gripper (9) is installed on both sides of the connector (11) by means of pins.

5. The side-top auxiliary positioning tie rod clamping device according to claim 1, characterized in that, The gripper (9) has a spring hole in the middle, and the two ends of the spring (10) are installed in the spring hole.

Images