A fixing tool for milling aluminum alloy die castings

Abstract

The utility model discloses a kind of fixed tool for milling of aluminum alloy die casting, it is related to die casting fixed tool technical field, including pedestal, the top of the pedestal is provided with vertical board, the top of the vertical board is provided with support seat, the top of the support seat is provided with support plate, connecting rod drive mechanism is arranged between the moving platform and support plate, the connecting rod drive mechanism includes the drive connecting rod of the both ends side wall of moving platform through pin shaft hinged, the left and right sides of the object table are symmetrically provided with clamp and installed in the top of slide, reciprocating transmission mechanism for adjusting the position of vertical board is set on the pedestal.The utility model is driven by connecting rod drive mechanism by hydraulic cylinder, realize two clamps and complete synchronous clamping action by a hydraulic cylinder, this design not only simplifies the drive structure, reduces the use of power source, reduces the manufacturing cost and energy consumption of equipment, can also guarantee the clamping force of two clamps uniform.

Description

Technical Field

[0001] This utility model relates to the field of die casting fixture technology, specifically to a fixture for milling aluminum alloy die castings. Background Technology

[0002] Due to their advantages such as light weight, high strength, and good thermal conductivity, aluminum alloy die castings are widely used in many fields such as automobiles, aerospace, and electronics. However, during the milling process, aluminum alloy die castings need to be fixed and positioned by fixtures. The purpose of the fixtures is to provide sufficient clamping force to firmly fix the aluminum alloy die castings on the milling machine's worktable, preventing the workpiece from moving or vibrating due to the cutting force during milling, thereby ensuring the stability and accuracy of the machining.

[0003] Existing fixed fixtures use multiple power sources to drive each clamp separately. This method makes it difficult to ensure that the clamping force of the two clamps is uniform. This may cause the die-cast parts to deform or be mispositioned due to uneven force during processing, which in turn affects the processing accuracy and product quality.

[0004] For example, CN209831012U discloses a tooling for drilling die-cast parts, including a worktable. Side plates are fixedly connected to the left and right sides of the upper end of the worktable. Guide rods are fixedly connected to the front and rear ends of the two sets of side plates. Two sets of guide sleeves are slidably connected to each set of guide rods. A first hydraulic cylinder is fixedly installed in the middle of the side of the two sets of side plates that are far apart from each other. The first hydraulic cylinder drives the connecting plate and the C-shaped abutment to move closer to the die-cast part, thereby clamping the die-cast part in the horizontal direction. In this patent, two hydraulic cylinders are used to drive two C-shaped abutments respectively. However, if the synchronization or pressure control of the two hydraulic cylinders is not proper, the clamping force may still be uneven. When the clamping force is uneven, the die-cast part may deform or be mispositioned during processing due to uneven force, which will affect the processing accuracy and product quality. For example, during milling, if the clamping force on one side is too large, the die-cast part may shift to the other side, causing processing errors.

[0005] Therefore, it is necessary to invent a fixed tooling for milling aluminum alloy die-casting parts to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a fixed fixture for milling aluminum alloy die castings, which solves the problem that using multiple power sources to drive each fixture separately makes it difficult to ensure that the clamping force of the two fixtures is uniform. This may cause the die casting to deform or misposition during the processing due to uneven force, thus affecting the processing accuracy and product quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fixed fixture for milling aluminum alloy die-casting parts, comprising a base, an upright plate above the base, a support seat on the top of the upright plate, a support plate on the top of the support seat, a movable stage below the support plate, a hydraulic cylinder for driving the movable stage installed at the bottom of the support seat with its output end connected to the bottom of the movable stage, a linkage transmission mechanism between the movable stage and the support plate, the linkage transmission mechanism comprising a driving link hinged to the side walls of both ends of the movable stage by a pin, a guide groove for sliding the pin being opened at the contact point between the driving link and the pin, a platform above the support plate, clamps symmetrically arranged on the left and right sides of the platform and installed above the slide, and a reciprocating transmission mechanism for adjusting the position of the upright plate on the base.

[0008] Preferably, the linkage transmission mechanism further includes a slide rail fixed in the middle of the upper part of the support plate, a slide seat slidably fitted on the upper part of the slide rail, and the side wall of the slide rail is hinged to the middle part of the drive linkage.

[0009] Preferably, the side walls on the front and rear sides of the slide are provided with positioning pins, and the upper part of the drive connecting rod is provided with a guide groove II, in which the positioning pin is slidably embedded.

[0010] Preferably, two clamps are provided, and each clamp has a "V" shaped positioning groove on its side wall, and a rubber pad is attached inside the positioning groove.

[0011] Preferably, the reciprocating transmission mechanism includes a reciprocating lead screw rotatably disposed in a groove in one side wall of the base, a servo motor fixedly disposed in the front side wall of the base, and the output shaft end of the servo motor being fixedly connected to the shaft end of the reciprocating lead screw.

[0012] Preferably, the servo motor is provided with a motor housing.

[0013] Preferably, a sliding rod is provided inside the groove of the other side wall of the base, a first sliding sleeve is fitted on the reciprocating screw by a nut, a second sliding sleeve is slidably fitted on the sliding rod, and the first sliding sleeve and the second sliding sleeve are respectively fixedly connected to the inner wall of the upright plate.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model, by setting a linkage transmission mechanism driven by a hydraulic cylinder, enables two clamps to complete synchronous clamping actions with the aid of a single hydraulic cylinder. When the output end of the hydraulic cylinder pushes the moving platform up and down, the driving linkages at both ends of the moving platform rotate around the hinge point with the side wall of the slide rail. At the same time, the pin slides in guide groove one and the positioning pin slides in guide groove two, thereby driving the slide block to move synchronously in opposite directions on the slide rail. Ultimately, the two clamps achieve synchronous clamping or loosening of the aluminum alloy die-casting on the platform. This design not only simplifies the drive structure and reduces the use of power sources, lowering the manufacturing cost and energy consumption of the equipment, but also ensures that the clamping force of the two clamps is uniform and consistent, avoiding deformation or inaccurate positioning of the die-casting due to uneven clamping force, effectively improving the stability and machining accuracy of the die-casting during milling. 2. This utility model, by setting a reciprocating transmission mechanism, can flexibly adjust the position of the fixture according to processing requirements. The servo motor drives the reciprocating screw to rotate. Under the guidance of the slide rod and the second slide sleeve, the first slide sleeve will drive the upright plate and the support seat, support plate, fixture and other components on the upright plate to move along the length direction of the base, thereby realizing the adjustment of the fixture position. This makes the fixed fixture adaptable to the milling needs of aluminum alloy die casting parts of different sizes and processing parts. Multiple processing operations can be completed without changing the fixture, which greatly improves the versatility and flexibility of the fixture, reduces the time and cost of fixture replacement, and improves processing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the clamp of this utility model; Figure 3 This is an exploded three-dimensional structural diagram of the slide rail and slide block of this utility model; Figure 4 This is a three-dimensional structural diagram of the reciprocating lead screw and slide bar of this utility model. Figure 5 This is a three-dimensional structural diagram of the first and second sliding sleeves of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Base; 2. Vertical plate; 3. Support base; 4. Support plate; 5. Moving stage; 6. Hydraulic cylinder; 7. Pin; 8. Drive linkage; 9. Guide groove one; 10. Slide rail; 11. Slide seat; 12. Positioning pin; 13. Guide groove two; 14. Fixture; 15. Storage platform; 16. Reciprocating screw; 17. Servo motor; 18. Motor housing; 19. Slide rod; 20. Slide sleeve one; 21. Slide sleeve two. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-5 The fixture shown is a fixed tooling for milling aluminum alloy die-casting parts, including a base 1, a vertical plate 2 above the base 1, a support base 3 on the top of the vertical plate 2, a support plate 4 on the top of the support base 3, a movable stage 5 below the support plate 4, a hydraulic cylinder 6 for driving the movable stage 5 installed at the bottom of the support base 3 and its output end connected to the bottom of the movable stage 5, a linkage transmission mechanism between the movable stage 5 and the support plate 4, the linkage transmission mechanism including a drive link 8 hinged to the side walls of both ends of the movable stage 5 by a pin 7, a guide groove 9 for sliding the pin 7 is opened at the contact point between the drive link 8 and the pin 7, a platform 15 is arranged directly above the support plate 4, clamps 14 are symmetrically arranged on the left and right sides of the platform 15 and installed above the slide 11, and a reciprocating transmission mechanism for adjusting the position of the vertical plate 2 is provided on the base 1.

[0019] In this embodiment, the hydraulic cylinder 6 provides power for the movement of the moving platform 5. By controlling the extension and retraction of the hydraulic cylinder 6, the up and down position of the moving platform 5 can be precisely controlled. The linkage transmission mechanism converts the linear motion of the moving platform 5 into the motion of driving the two clamps 14 to clamp or release simultaneously. The placement platform 15 provides a stable placement platform for the material, which is convenient for the positioning and processing of the material. The clamps 14 symmetrically arranged on the left and right sides can clamp the material on both sides at the same time.

[0020] The linkage transmission mechanism also includes a slide rail 10 fixed in the middle of the upper part of the support plate 4, a slide seat 11 slidably fitted on the upper part of the slide rail 10, the side wall of the slide rail 10 is hinged to the middle of the drive link 8, the side walls of the front and rear sides of the slide seat 11 are provided with positioning pins 12, the upper part of the drive link 8 is provided with a guide groove 13, the positioning pins 12 are slidably embedded in the guide groove 13, and two clamps 14 are provided. The side walls of the two clamps 14 are provided with "V" shaped positioning grooves, and rubber pads are pasted inside the positioning grooves.

[0021] In this embodiment, the slide rail 10 provides precise guidance for the movement of the slide block 11, ensuring that the slide block 11 can only move along the straight line specified by the slide rail 10, avoiding deviation or shaking of the slide block 11 during movement, thereby ensuring the accuracy and stability of the movement of the clamp 14. The middle part of the drive linkage 8 is hinged to the side wall of the slide rail 10, and the upper part cooperates with the positioning pin 12 on the slide block 11 through the guide groove 13. When the drive linkage 8 swings under the drive of the moving table 5, the interaction between the guide groove 13 and the positioning pin 12 keeps the drive linkage in motion. The swing motion of 8 is converted into the linear motion of the slide 11, realizing the conversion and transmission of motion form. This allows the clamp 14 to clamp or release the part in a predetermined manner. The two symmetrically arranged clamps 14 move towards the center and apply clamping force to the part using the side wall of the "V" shaped positioning groove, firmly fixing the part on the table 15. At the same time, the friction of the rubber pad can increase the friction between the part and the clamp 14, further preventing the part from sliding during processing and preventing the part from moving or vibrating during processing.

[0022] The reciprocating transmission mechanism includes a reciprocating screw 16 rotatably disposed in a groove on one side wall of the base 1, a servo motor 17 fixedly disposed on the front side wall of the base 1, the output shaft end of the servo motor 17 being fixedly connected to the shaft end of the reciprocating screw 16, a motor housing 18 being provided on the outside of the servo motor 17, a slide rod 19 being disposed in a groove on the other side wall of the base 1, a first slide sleeve 20 being fitted on the reciprocating screw 16 by a nut, a second slide sleeve 21 being slidably fitted on the slide rod 19, and the first slide sleeve 20 and the second slide sleeve 21 being fixedly connected to the inner wall of the vertical plate 2 respectively.

[0023] In this embodiment, the servo motor 17 serves as a power source, converting electrical energy into mechanical energy. The power is then transmitted to the reciprocating screw 16 via the output shaft. The reciprocating screw 16 converts rotational motion into linear motion, thus realizing the transmission of power and the conversion of motion form. The cooperation between the slide rod 19 and the sliding sleeve 21 provides stable support and guidance for the movement of the vertical plate 2, thereby enabling the position adjustment operation of the entire fixture 14.

[0024] Working principle of this utility model: Refer to the instruction manual appendix Figure 1-3When using this utility model, firstly, place the die-cast part to be processed on the platform 15. Then, operate the control panel of the equipment to start the hydraulic cylinder 6 installed at the bottom of the support base 3. The hydraulic cylinder 6 starts working, and its output end extends upward, pushing the movable platform 5 connected to it to move upward. When the movable platform 5 moves upward, the drive connecting rod 8, which is hinged to its two end side walls by the pin 7, will be subjected to an upward pulling force. Because the contact point between the drive connecting rod 8 and the pin 7 is provided with a guide groove 9 for the pin 7 to slide, and the middle part of the drive connecting rod 8 is hinged to the side wall of the slide rail 10, therefore... The drive link 8 swings upward around its central hinge point. When the drive link 8 swings upward, the guide groove 13 will move relative to the positioning pin 12. Through this interaction, the swing motion of the drive link 8 is converted into the linear motion of the slide 11 along the slide rail 10. As the slide 11 moves linearly, the two clamps 14 move towards the center at the same time. When the clamps 14 move towards the center, the side wall of the "V" shaped positioning groove will apply a clamping force to the part placed on the table 15, thereby firmly fixing the part on the table 15 and completing the clamping operation. Refer to the instruction manual appendix Figure 4-5 When using this utility model, the requirements for adjusting the fixture 14 should be determined based on actual processing needs. When adjusting the position, operate the control panel of the equipment and start the servo motor 17 installed on the front side wall of the base 1. After the servo motor 17 starts, its output shaft will drive the reciprocating screw 16 to rotate in the groove on one side wall of the base 1. As the reciprocating screw 16 rotates, the nut inside the first sliding sleeve 20 engages with the thread of the reciprocating screw 16, causing the first sliding sleeve 20 to move linearly along the reciprocating screw 16. When the first sliding sleeve 20 moves linearly along the reciprocating screw 16, the second sliding sleeve 21 will move synchronously linearly under the constraint of the sliding rod 19. The cooperation between the sliding rod 19 and the second sliding sleeve 21 provides stable support and guidance for the movement of the upright plate 2. The upright plate 2 serves as the carrier for the mounting platform 15 and the clamp 14. With the drive of the first sliding sleeve 20 and the second sliding sleeve 21, the upright plate 2 will move linearly back and forth along the direction of the reciprocating screw 16 and the sliding rod 19. Since the clamp 14 is installed on the related structure of the upright plate 2, the movement of the upright plate 2 will drive the entire clamp 14. Position adjustments are made to achieve precise control of the position of fixture 14, in order to meet the needs of different machining positions.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed fixture for milling aluminum alloy die-cast parts, comprising a base (1), characterized in that: A vertical plate (2) is provided above the base (1), a support base (3) is provided on the top of the vertical plate (2), a support plate (4) is provided on the top of the support base (3), a moving platform (5) is provided below the support plate (4), a hydraulic cylinder (6) for driving the moving platform (5) is installed at the bottom of the support base (3) and its output end is connected to the bottom of the moving platform (5), a linkage transmission mechanism is provided between the moving platform (5) and the support plate (4), the linkage transmission mechanism The structure includes a drive link (8) hinged to the side walls of the two ends of the moving platform (5) by a pin (7). A guide groove (9) for sliding the pin (7) is provided at the contact point between the drive link (8) and the pin (7). A platform (15) is provided directly above the support plate (4). Clamps (14) are symmetrically arranged on the left and right sides of the platform (15) and installed above the slide (11). A reciprocating transmission mechanism for adjusting the position of the upright plate (2) is provided on the base (1).

2. The fixed fixture for milling aluminum alloy die-casting parts according to claim 1, characterized in that: The linkage transmission mechanism also includes a slide rail (10) fixed in the middle of the upper part of the support plate (4), and a slide seat (11) is slidably fitted on the upper part of the slide rail (10). The side wall of the slide rail (10) is hinged to the middle part of the drive linkage (8).

3. The fixed fixture for milling aluminum alloy die-casting parts according to claim 2, characterized in that: The sliding block (11) has a positioning pin (12) on its front and rear side walls, and the drive connecting rod (8) has a guide groove (13) on its upper part. The positioning pin (12) is slidably embedded in the guide groove (13).

4. The fixed fixture for milling aluminum alloy die-casting parts according to claim 1, characterized in that: Two clamps (14) are provided. The side walls of the two clamps (14) are provided with "V" shaped positioning grooves, and rubber pads are pasted inside the positioning grooves.

5. The fixed fixture for milling aluminum alloy die-casting parts according to claim 1, characterized in that: The reciprocating transmission mechanism includes a reciprocating screw (16) rotatably disposed in a groove on one side wall of the base (1), and a servo motor (17) is fixedly disposed on the front side wall of the base (1). The output shaft end of the servo motor (17) is fixedly connected to the shaft end of the reciprocating screw (16).

6. The fixed fixture for milling aluminum alloy die-casting parts according to claim 5, characterized in that: The servo motor (17) is covered by a motor housing (18).

7. The fixed fixture for milling aluminum alloy die-casting parts according to claim 6, characterized in that: A slide rod (19) is provided inside the groove on the other side wall of the base (1). A first slide sleeve (20) is fitted on the reciprocating screw (16) by a nut. A second slide sleeve (21) is slidably fitted on the slide rod (19). The first slide sleeve (20) and the second slide sleeve (21) are respectively fixedly connected to the inner wall of the upright plate (2).

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