Work fixture for automatic machining of hydraulic support structural parts

Abstract

The utility model discloses a work fixture for automatic processing of hydraulic support structural parts, which comprises a frame, double exchange workbenches are arranged on the frame, three groups of centering and clamping mechanisms are uniformly distributed in the extension direction of the two workbenches, each group of centering and clamping mechanism comprises a base I and a base II which are oppositely mounted, and the base I and the base II are oppositely mounted. Two parallel rails are arranged on the first base and the second base, a first reduction gearbox and a second reduction gearbox are arranged at the inner end of the first base and the inner end of the second base respectively and driven by a servo motor, and a first sliding table and a second sliding table are installed on the first trapezoidal lead screw and the second trapezoidal lead screw through trapezoidal lead screws in a transmission fit mode respectively. L-shaped adjustable clamps are arranged at the outer ends of the first sliding table and the second sliding table, an electric control box is arranged at the position, located at one end of the double-exchange workbench, of the rack, the electric control box is electrically connected with the corresponding servo motor through an automatic butt joint plug and used for controlling a switch of the servo motor, and the electric control box controls a centering positioning module. It is guaranteed that the workpiece is accurately clamped in all directions, collision is avoided, and it is guaranteed that vibration of the workpiece is reduced in the subsequent machining process.

Description

Technical Field

[0001] The utility model relates to the technical field of production line machining fixtures, and more specifically, to a fixture for automated machining of hydraulic support structural parts. Background Art

[0002] Hydraulic support structural parts are of many varieties and large size spans. Positioning is required during machining to ensure that the workpiece as a whole is parallel to the workbench, and there must be no gap between the bottom and the contact part of the workbench, otherwise the tool will vibrate during processing, causing damage to the blade and affecting production efficiency. These have become one of the key factors restricting the construction of flexible and automated production lines for hydraulic support structural parts.

[0003] In order to solve the above problems, manual loading and manual positioning are usually adopted: the workpiece is hoisted to the top of the platform by a manual crane, and two people need to cooperate with each other to prevent the workpiece from hitting the equipment and tooling during hoisting. After the width and length directions are aligned, it can be slowly dropped to observe whether the bottom is uneven. If it is uneven, a wedge block is manually placed on the bottom of the workpiece. Finally, a simple clamping device is used to clamp the workpiece, and the workpiece loading is completed. Using this method will bring the following problems: the dead side collides with the workpiece for a long time in the length and width directions, and the accuracy is difficult to guarantee; the length and width directions and the dead side positioning collision position will be offset, and repeated adjustments are required; the volume and weight of the hydraulic support structure are relatively large, both at 10t-20t, and the safety risk of manual overhead crane hoisting workpieces is too high.

[0004] Therefore, in order to solve the above problems, it is necessary to propose a tooling fixture for automated processing of hydraulic support structural parts. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to propose a tooling fixture for the automated processing of hydraulic support structural parts, which sets up a double exchange workbench, uses an automatic crane to lift the workpiece to the automatic tooling fixture, and uses an electric control box to control the centering and positioning module to ensure that the workpiece is accurately clamped in all directions to avoid bumps and to ensure that the workpiece has less vibration during subsequent processing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A fixture for automated processing of hydraulic support structural parts, comprising a frame, on which two double exchange workbenches parallel to each other in the horizontal direction are arranged, the double exchange workbenches are respectively a main workbench and a spare workbench, three sets of centering clamping mechanisms are evenly distributed in the extension direction of the two workbenches, each set of centering clamping mechanisms respectively comprises a base 1 and a base 2 installed relatively, the two bases are arranged horizontally, and their extension directions are perpendicular to the extension direction of the workbenches, two parallel tracks are respectively arranged on the base 1 and the base 2 along their extension directions, a reduction box 1 and a reduction box 2 are respectively arranged at the inner ends of the base 1 and the base 2, the two reduction boxes are driven by servo motors, and the two reduction boxes The output shafts of the gearboxes pass through the corresponding side walls and are coaxially fixed with a trapezoidal screw rod 1 and a trapezoidal screw rod 2. The two trapezoidal screw rods pass between the two corresponding tracks, and their outer ends extend to the outer ends of the base 1 and the base 2 respectively, and are rotatably mounted on the outer end side walls of the base 1 and the base 2 through bearings. Slides 1 and 2 are respectively mounted on the trapezoidal screw rods 1 and 2 through trapezoidal screw transmission. Slide grooves 1 and 2 are respectively provided at the bottoms of the slides 1 and 2. The slide 1 is slidably mounted on the track of the base 1 through the slide groove 1, and the slide 2 is slidably mounted on the track of the base 2 through the slide groove 2. "L"-shaped adjustable clamps are provided at the outer ends of the slides 1 and 2.

[0008] An electric control box is arranged on the frame at one end of the double exchange workbench. The electric control box is electrically connected to the corresponding servo motor by an automatic docking plug and is used to control the switch of the servo motor.

[0009] The utility model is further configured as follows: a plurality of support columns are evenly distributed between the three groups of centering clamping mechanisms on the double exchange workbench.

[0010] The utility model is further configured as follows: clamping components are evenly distributed on the double exchange workbench and at both ends thereof, the clamping component includes a fixing column fixed to the workbench, a waist-shaped pressing plate is provided at the upper end of the fixing column, a through hole matching the fixing column is opened at one end of the pressing plate, the upper end of the fixing column is passed through the through hole, a waist-shaped hole is opened on the pressing plate at a position on one side of the through hole, a threaded column is arranged below the waist-shaped hole on one side of the fixing column, the lower end of the threaded column is fixed to the workbench, the upper end thereof passes through the waist-shaped hole and is installed with a nut matching therewith, a spring is sleeved on the threaded column and between the pressing plate and the workbench, and the outer end of the pressing plate faces the inner side of the workbench.

[0011] The utility model is further configured as follows: a servo motor 1 and a servo motor 2 are installed at positions on both sides of the double exchange worktable on the frame, a plurality of horizontal slide grooves perpendicular to the extension direction of the double exchange worktable are arranged on the bottom surface, a slideway matching the slide groove is arranged on the frame, the servo motor 1 drives the main worktable to slide along the slideway through a screw transmission, and the servo motor 2 drives the spare worktable to slide along the slideway through a screw transmission;

[0012] The electric control box is electrically connected to the servo motor 1 and the servo motor 2 and controls the switches thereof.

[0013] In summary, the utility model has the following beneficial effects:

[0014] By setting up a double exchange workbench, uninterrupted processing of the workpiece can be achieved, and by setting up an electric control box to control the centering clamping mechanism to achieve positioning and clamping of the workpiece, unnecessary collision of the workpiece can be avoided. By adopting an automatic docking plug, the power supply is automatically docked, which can avoid complex line layout;

[0015] By setting a clamping assembly, when the workpiece is lifted by the automatic crane to the center position of the centering clamping mechanism and the control box is operated to clamp the workpiece, the upper surface of the workpiece can be pressed tightly against the lower surface of the outer end of the pressing piece by turning the nut, so that the workpiece is fixed more firmly and the workpiece positioning is better prevented from being offset;

[0016] By setting servo motor 1 and servo motor 2 and combining with screw transmission to drive the double exchange worktable to slide, interference will occur when the automatic crane is lifting the workpiece, and it is convenient to move the workpiece to the corresponding position that needs to be processed. When the processing is completed, it is convenient to move the workpiece to the unloading position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3 is an enlarged view of the clamping assembly;

[0020] Figure 4 This is a top view of the centering and clamping mechanism.

[0021] Figure markings: 1. Frame; 2. Main workbench; 3. Spare workbench; 4. Base 1; 5. Base 2; 6. Track; 7. Gearbox 1; 8. Gearbox 2; 9. Servo motor; 10. Trapezoidal lead screw 1; 11. Trapezoidal lead screw 2; 12. Slide 1; 13. Waist-shaped hole; 14. Adjustable clamp; 15. Electric control box; 16. Fixed column; 17. Pressing plate; 18. Through hole; 19. Threaded column; 20. Spring; 21. Nut; 22. Servo motor 1; 23. Servo motor 2; 24. Slide; 25. Slide 1; 26. Slide 2; 27 Support column. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with the accompanying drawings.

[0023] Embodiment: A fixture for automated processing of hydraulic support structural parts, which is equipped with a double exchange workbench, uses an automatic crane to lift the workpiece to the automatic fixture, and uses an electric control box to control the centering and positioning module to ensure that the workpiece is accurately clamped in all directions to avoid bumps and to reduce vibration of the workpiece during subsequent processing.

[0024] refer to Figure 1 , Figure 2 A fixture for automated processing of hydraulic support structural parts, including a frame 1, on which are arranged two double exchange workbenches parallel to each other in the horizontal direction, the double exchange workbenches are respectively a main workbench 2 and a spare workbench 3, three sets of centering clamping mechanisms are evenly arranged in the extension direction of the two workbenches, each set of centering clamping mechanisms respectively includes a base 1 4 and a base 2 5 installed relatively, the two bases are arranged horizontally, and their extension directions are perpendicular to the extension direction of the workbenches, and two parallel tracks 6 are respectively arranged on the base 1 4 and the base 2 5 along their extension directions. Figure 3 , Figure 4A reduction box 1 7 and a reduction box 2 8 are respectively arranged at the inner ends of the base 1 4 and the base 2 5. Both reduction boxes are driven by a servo motor 9. The output shafts of the two reduction boxes pass through the corresponding side walls of the reduction boxes and are coaxially fixed with a trapezoidal lead screw 10 and a trapezoidal lead screw 2 11. The two trapezoidal lead screws pass between the two corresponding tracks 6, and their outer ends extend to the outer ends of the base 1 4 and the base 2 5 respectively, and are rotatably installed on the outer end side walls of the base 1 4 and the base 2 5 through bearings. A slide 1 25 and a slide 2 26 are respectively installed on the trapezoidal lead screw 10 and the trapezoidal lead screw 2 11 through the trapezoidal lead screw transmission. The bottom of slide 1 25 and slide 2 26 are provided with slide groove 1 12 and slide groove 2 respectively. Slide 1 25 is slidably installed on the track 6 of base 1 4 through slide groove 12, and slide 2 26 is slidably installed on the track 6 of base 2 5 through slide groove 2. An "L"-shaped adjustable clamp 14 is provided at the outer ends of slide 1 25 and slide 2 26. The adjustable clamp 14 is fixed to the corresponding slide by horizontally arranged bolts. An electric control box 15 is provided at one end of the double exchange workbench on the frame 1. The electric control box 15 is electrically connected to the corresponding servo motor 9 by an automatic docking plug and is used to control the switch of the servo motor 9. The double exchange workbench can realize uninterrupted processing of the workpiece. The workpiece is hoisted to the center position of the centering clamping mechanism by an automatic crane, and the positioning and clamping of the workpiece is realized by operating the electric control box 15 to control the movement of the slide of the centering clamping mechanism, which can avoid unnecessary collision of the workpiece;

[0025] refer to Figure 2 A clamping assembly is evenly arranged on the double exchange workbench and at both ends thereof, and the clamping assembly includes a fixed column 16 fixed on the workbench, a waist-shaped pressing sheet 17 is arranged at the upper end of the fixed column 16, a through hole 18 matching the fixed column 16 is opened at one end of the pressing sheet 17, the upper end of the fixed column 16 is penetrated in the through hole 18, a waist-shaped hole 13 is opened on the pressing sheet 17 at one side of the through hole 18, and a threaded column 19 is arranged below the waist-shaped hole 13 on one side of the fixed column 16, and the lower end of the threaded column 19 is provided with a threaded column 19. The end is fixed on the workbench, and its upper end passes through the waist-shaped hole 13 and is installed with a nut 21 that matches it. A spring 20 is sleeved on the threaded column 19 and between the pressing plate 17 and the workbench. The outer end of the pressing plate 17 faces the inner side of the workbench. When the workpiece is lifted by the automatic crane to the center position of the servo centering and positioning module and the control box is operated to clamp the workpiece, the nut 21 is turned to press the upper surface of the workpiece against the lower surface of the outer end of the pressing plate 17, so that the workpiece is fixed more firmly and the workpiece positioning is better prevented from being offset. A number of support columns 27 are evenly distributed between the three groups of servo centering and positioning modules on the double exchange workbench. When the workpiece is clamped and pressed, if the bottom of the workpiece is uneven due to welding deformation, a wedge block is driven between the support column 27 and the workpiece to better ensure the three-point support at the bottom, and the workpiece is pressed front and back with a clamping assembly to ensure that the workpiece does not vibrate during processing.

[0026] refer to Figure 1 A servo motor 1 22 and a servo motor 2 23 are installed on the frame 1 at the positions on both sides of the double exchange workbench. A plurality of horizontal slide grooves perpendicular to the extension direction of the double exchange workbench are arranged on the bottom surface of the double exchange workbench. A slideway 24 matching the slide groove is arranged on the frame 1. The servo motor 1 22 drives the main workbench 2 to slide along the slideway 24 through a screw drive. The servo motor 2 23 drives the spare workbench 3 to slide along the slideway 24 through a screw drive. The electric control box 15 is electrically connected to the servo motor 1 22 and the servo motor 2 23 and controls their switches. By setting the servo motor 1 22 and the servo motor 2 23 and combining the screw drive to drive the double exchange workbench to slide, interference will occur when the automatic crane lifts the workpiece.

[0027] Operation process: When the workpiece is welded by the welding process, use the automatic crane to lift the workpiece to the center position of the centering clamping mechanism, operate the electric control box 15, so that the corresponding servo motor 9 drives the corresponding slide to slide, so that the corresponding adjustable clamp 14 clamps the workpiece. If the bottom of the workpiece is uneven due to welding deformation, a wedge block is driven between the workpiece and the support column 27 to ensure single-point support at the bottom. Use the clamping assembly to clamp the workpiece at the front and back to ensure that the workpiece will not vibrate during subsequent processing.

[0028] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A fixture for automated processing of hydraulic support structural parts, characterized in that: The machine comprises a frame, on which two double exchange workbenches parallel to each other in the horizontal direction are arranged, the double exchange workbenches are respectively a main workbench and a spare workbench, three sets of centering clamping mechanisms are evenly arranged in the extension direction of the two workbenches, each set of centering clamping mechanisms respectively comprises a base 1 and a base 2 installed relatively, the two bases are arranged horizontally, and their extension directions are perpendicular to the extension direction of the workbenches, two parallel tracks are respectively arranged on the base 1 and the base 2 along their extension directions, and a reduction box 1 and a reduction box 2 are respectively arranged at the inner ends of the base 1 and the base 2, the two reduction boxes are driven by servo motors, and the output shafts of the two reduction boxes respectively pass through the corresponding Trapezoidal screw rod 1 and trapezoidal screw rod 2 are coaxially fixed on the side wall of the reduction box, and the two trapezoidal screw rods pass through the two corresponding tracks, and their outer ends extend to the outer ends of the base 1 and the base 2 respectively, and are rotatably installed on the outer end side walls of the base 1 and the base 2 through bearings, and slides 1 and 2 are respectively installed on the trapezoidal screw rod 1 and the trapezoidal screw rod 2 through the trapezoidal screw transmission, and slide grooves 1 and 2 are respectively provided at the bottom of the slides 1 and the slides 2, and the slides 1 are slidably installed on the track of the base 1 through the slide groove 1, and the slides 2 are slidably installed on the track of the base 2 through the slide groove 2, and "L"-shaped adjustable clamps are provided on the outer ends of the slides 1 and the slides 2; An electric control box is arranged on the frame at one end of the double exchange workbench. The electric control box is electrically connected to the corresponding servo motor by an automatic docking plug and is used to control the switch of the servo motor.

2. The fixture for automated processing of hydraulic support structural parts according to claim 1 is characterized in that: A plurality of support columns are evenly distributed between the three sets of centering clamping mechanisms on the double exchange workbench.

3. The fixture for automated processing of hydraulic support structural parts according to claim 1 is characterized in that: A clamping assembly is arranged on the double exchange workbench and at both ends thereof, the clamping assembly comprises a fixing column fixed to the workbench, a waist-shaped pressing sheet is arranged at the upper end of the fixing column, a through hole matching the fixing column is opened at one end of the pressing sheet, the upper end of the fixing column is passed through the through hole, a waist-shaped hole is opened on the pressing sheet at a position on one side of the through hole, a threaded column is arranged below the waist-shaped hole on one side of the fixing column, the lower end of the threaded column is fixed to the workbench, the upper end thereof passes through the waist-shaped hole and is installed with a nut matching therewith, a spring is sleeved on the threaded column and between the pressing sheet and the workbench, and the outer end of the pressing sheet faces the inner side of the workbench.

4. The fixture for automated processing of hydraulic support structural parts according to claim 1, characterized in that: A servo motor 1 and a servo motor 2 are installed at positions on both sides of the double exchange worktable on the frame, a plurality of horizontal slide grooves perpendicular to the extension direction of the double exchange worktable are arranged on the bottom surface, and a slideway matching the slide groove is arranged on the frame, the servo motor 1 drives the main worktable to slide along the slideway through a screw transmission, and the servo motor 2 drives the spare worktable to slide along the slideway through a screw transmission; The electric control box is electrically connected to the servo motor 1 and the servo motor 2 and controls the switches thereof.

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