Clamping fixture for rectangular casting machining

Abstract

The utility model belongs to the field of casting processing technology especially a kind of clamping tool for rectangular casting processing, present and propose the following scheme, including workbench and install the clamping mechanism and supporting mechanism on workbench, the clamping mechanism includes fixed frame, mobile seat, adjusting part, fixed plate, electric cylinder, rack, pinion, clamping part one, cylinder and clamping part two, the fixed frame is two and installs in the middle two sides of workbench, the mobile seat slides up and down along the inner wall of fixed frame.The utility model drive electric cylinder is moved along fixed plate side edge by the connecting plate of its output, and then rack drives pinion to rotate, pinion can drive clamping part one to rotate, rectangular casting and clamping part two rotate synchronously, rectangular casting is turned over one hundred and eighty degrees, after again reverse drive motor, two supporting plate is pulled back, rectangular casting bottom is supported, and rectangular casting can be turned over, and processing surface is replaced.

Description

Technical Field

[0001] This utility model relates to the field of casting processing technology, and in particular to a clamping fixture for processing rectangular castings. Background Technology

[0002] Castings are metal shaped objects obtained by various casting methods. That is, smelted liquid metal is poured into a pre-prepared mold by pouring, injection, suction or other casting methods. After cooling, it is processed by subsequent means such as grinding. The resulting object has a certain shape, size and performance. When processing rectangular castings, clamping devices are required.

[0003] Commonly used clamping fixtures are used in conjunction with workpieces. After machining one end face of the workpiece, it is necessary to change to the other end face for machining. However, the change process often requires manual disassembly and manual clamping, which is time-consuming and labor-intensive, and has poor practicality. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a clamping fixture for machining rectangular castings, thereby solving the problems mentioned in the background section.

[0005] A clamping fixture for machining rectangular castings includes a worktable and a clamping mechanism and a support mechanism mounted on the worktable. The clamping mechanism includes a fixed frame, a movable seat, an adjusting part, a fixed plate, an electric cylinder, a rack, a gear shaft, a first clamping part, a pneumatic cylinder, and a second clamping part. The fixed frame consists of two opposing frames mounted on both sides of the middle of the worktable. The movable seat slides up and down along the inner wall of the fixed frame and is limited in movement by the adjusting part. The fixed plate is mounted on the movable seat on one side of the worktable. The electric cylinder is mounted on the fixed plate. The rack slides along one side of the fixed plate and is fixedly connected to the output end of the electric cylinder by a fixed block. The gear shaft passes through the movable seat and is rotatably connected to the movable seat. The pneumatic cylinder is mounted on the movable seat on the other side of the worktable, and its output end passes through the movable seat. The second clamping part is rotatably mounted at the output end of the pneumatic cylinder.

[0006] By adopting the above technical solution, rectangular castings of different sizes can be clamped, and the rectangular castings can be flipped to change the machining surface.

[0007] The support mechanism includes a motor, a bidirectional lead screw, a connecting arm, and a support plate. The bidirectional lead screw is installed at the output end of the motor. The support plate consists of two opposing sets that slide along the middle of the worktable. The connecting arms are fixed on both sides of the support plate, with one side of the connecting arm being connected to the bidirectional lead screw via a transmission.

[0008] The bottom of the rectangular casting is supported by the above technical solution.

[0009] The upper surface of the support plate is flush with the upper surface of the workbench, and the minimum distance between the two support plates is greater than the width of the fixing frame.

[0010] By adopting the above technical solution, it is convenient for the clamping part to move in one direction while the clamping part moves in two directions, thus clamping the rectangular casting.

[0011] The adjustment part consists of studs and nuts, with two sets on each of the fixed frames on both sides of the worktable. The studs pass through the top of the fixed frame and are fixedly connected to the movable seat. There are two nuts, located above and below the top plate of the fixed frame, respectively.

[0012] The above technical solution facilitates the adjustment of the height of the movable seat.

[0013] Both of the two clamping parts have trapezoidal openings on their opposite sides.

[0014] The rectangular casting is clamped by adopting the above technical solution.

[0015] The beneficial effects of this utility model of clamping fixture for machining rectangular castings are:

[0016] 1. The height of the movable seats inside the two fixed frames can be adjusted up and down according to the thickness of the rectangular casting. After the center height of the movable seats is at the same level as the center height of the rectangular casting, the nut of the adjusting part is rotated to lock the stud of the adjusting part on the fixed frame, limiting the movement of the movable seat. The driving cylinder pushes the clamping part two, and the clamping part two pushes one side of the rectangular casting to the middle of the clamping part one until the clamping part one and the clamping part two clamp the rectangular casting together. The surface processing operation of the rectangular casting can then be performed, which is convenient for clamping rectangular castings of different sizes.

[0017] 2. The drive electric cylinder drives the rack to move along the side of the fixed plate through the connecting plate at its output end. The rack then drives the gear shaft to rotate, which in turn drives the clamping part to rotate. At this time, the rectangular casting and the clamping part rotate synchronously, flipping the rectangular casting 180 degrees. Then, the drive motor reverses to pull the two support plates back, supporting the bottom of the rectangular casting, and can flip the rectangular casting to change the machining surface. Attached Figure Description

[0018] Figure 1 This is a first-view view of the clamping fixture for machining rectangular castings proposed in this utility model.

[0019] Figure 2 This is a second-view view of the clamping fixture for machining rectangular castings proposed in this utility model.

[0020] Figure 3 This is a third-view view of the clamping fixture for machining rectangular castings proposed in this utility model.

[0021] In the diagram: 1. Workbench; 2. Motor; 3. Two-way lead screw; 4. Connecting arm; 5. Support plate; 6. Fixed frame; 7. Moving seat; 8. Adjustment part; 9. Fixed plate; 10. Electric cylinder; 11. Rack; 12. Gear shaft; 13. Clamping part one; 14. Cylinder; 15. Clamping part two. Detailed Implementation

[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0023] Reference Figure 1-3 A clamping fixture for machining rectangular castings includes a worktable 1 and a clamping mechanism and a support mechanism mounted on the worktable 1. The clamping mechanism includes a fixed frame 6, a movable seat 7, an adjusting part 8, a fixed plate 9, an electric cylinder 10, a rack 11, a gear shaft 12, a first clamping part 13, a cylinder 14, and a second clamping part 15. The fixed frame 6 consists of two opposing fixed frames mounted on the middle sides of the worktable 1. The movable seat 7 slides up and down along the inner wall of the fixed frame 6 and is limited in movement by the adjusting part 8. The fixed plate 9 is mounted on the movable seat 7 on one side of the worktable 1. The electric cylinder 10 is mounted on the fixed plate 9. The rack 11 slides along one side of the fixed plate 9 and is fixedly connected to the output end of the electric cylinder 10 by a fixed block. The gear shaft 12 passes through the movable seat 7 and is rotatably connected to the movable seat 7. The cylinder 14 is mounted on the movable seat 7 on the other side of the worktable 1, and its output end passes through the movable seat 7. The second clamping part 15 is rotatably mounted at the output end of the cylinder 14.

[0024] The two clamping parts 15 have trapezoidal openings on their opposite sides, allowing the rectangular casting to be placed on the two support plates 5. The middle part is placed between the clamping part 13 and the clamping part 15. The adjusting part 8 consists of studs and nuts, with two sets on each of the fixed frames 6 on both sides of the worktable 1. The studs pass through the top of the fixed frame 6 and are fixedly connected to the movable seat 7. There are two nuts, located above and below the top plate of the fixed frame 6, respectively. The height of the movable seat 7 inside the two fixed frames 6 can be adjusted up and down according to the thickness of the rectangular casting. After the center height of the movable seat 7 is at the same level as the center height of the rectangular casting, the nuts of the adjusting part 8 are rotated to lock the studs of the adjusting part 8 on the fixed frame 6, thus limiting the movement of the movable seat 7.

[0025] At this point, the cylinder 14 can be driven to push the clamping part 2 15, and the clamping part 2 15 will push one side of the rectangular casting to the middle of the clamping part 1 13 until the clamping part 1 13 and the clamping part 2 15 clamp the rectangular casting together, and the surface processing operation can be performed on the rectangular casting.

[0026] The support mechanism includes a motor 2, a bidirectional lead screw 3, connecting arms 4, and support plates 5. The bidirectional lead screw 3 is installed at the output end of the motor 2. The support plates 5 consist of two opposing sets that slide along the middle of the worktable 1. The connecting arms 4 are fixed to both sides of the support plates 5, with one side of the connecting arm 4 being connected to the bidirectional lead screw 3. After the surface is machined, the drive motor 2 rotates the bidirectional lead screw 3, which in turn drives the connecting arms 4 on one side of the two support plates 5 to move in opposite directions, thus pulling the two sets of support plates 5 apart.

[0027] The drive electric cylinder 10 drives the rack 11 to move along the side of the fixed plate 9 through the connecting plate at its output end. In turn, the rack 11 drives the gear shaft 12 to rotate, and the gear shaft 12 can drive the clamping part 13 to rotate. At this time, the rectangular casting and the clamping part 2 15 rotate synchronously, flipping the rectangular casting 180 degrees. Then, the drive motor 2 reverses and pulls the two support plates 5 back to support the bottom of the rectangular casting, so that the other side of the rectangular casting can be processed.

[0028] The upper surface of the support plate 5 is flush with the upper surface of the workbench 1, and the minimum distance between the two support plates 5 is greater than the width of the fixing frame 6, so as to facilitate the movement of the clamping part 2 15 towards the clamping part 1 13 to clamp the rectangular casting.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A clamping fixture for machining rectangular castings, comprising a worktable (1) and a clamping mechanism and a support mechanism mounted on the worktable (1), characterized in that: The clamping mechanism includes a fixed frame (6), a movable seat (7), an adjusting part (8), a fixed plate (9), an electric cylinder (10), a rack (11), a gear shaft (12), a first clamping part (13), a cylinder (14), and a second clamping part (15). The fixed frame (6) consists of two opposing units mounted on either side of the center of the workbench (1). The movable seat (7) slides up and down along the inner wall of the fixed frame (6) and its movement is limited by the adjusting part (8). The fixed plate (9) is mounted on one side of the workbench (1). On the movable seat (7), the electric cylinder (10) is mounted on the fixed plate (9). The rack (11) slides along one side of the fixed plate (9) and is fixedly connected to the output end of the electric cylinder (10) through the fixed block. The gear shaft (12) passes through the movable seat (7) and is rotatably connected to the movable seat (7). The cylinder (14) is mounted on the movable seat (7) on the other side of the workbench (1), and its output end passes through the movable seat (7). The clamping part two (15) is rotatably mounted at the output end of the cylinder (14).

2. The clamping fixture for machining rectangular castings according to claim 1, characterized in that: The support mechanism includes a motor (2), a two-way lead screw (3), a connecting arm (4), and a support plate (5). The two-way lead screw (3) is installed at the output end of the motor (2). The support plate (5) consists of two opposing sliding parts along the middle of the workbench (1). The connecting arm (4) is fixed on both sides of the support plate (5), and one side of the connecting arm (4) is connected to the two-way lead screw (3) in a transmission connection.

3. The clamping fixture for machining rectangular castings according to claim 2, characterized in that: The upper surface of the support plate (5) is flush with the upper surface of the workbench (1), and the minimum distance between the two support plates (5) is greater than the width of the fixing frame (6).

4. The clamping fixture for machining rectangular castings according to claim 3, characterized in that: The adjustment part (8) is composed of studs and nuts. Two sets are provided on the fixed frame (6) on both sides of the workbench (1). The studs pass through the top of the fixed frame (6) and are fixedly connected to the moving seat (7). There are two nuts, which are located above and below the top plate of the fixed frame (6).

5. The clamping fixture for machining rectangular castings according to claim 4, characterized in that: The opposing surfaces of the two clamping parts (15) are both set with trapezoidal openings.

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