Z-shaped seat body type workpiece rotating and vertical machining hydraulic clamp

Abstract

The utility model discloses a Z-shaped seat type workpiece rotating and vertical machining hydraulic clamp which can provide uniform pressing force, is low in workpiece machining deformation rate, can automatically clamp a workpiece, and is simple to operate and high in positioning precision. The fixture comprises a bottom plate and is characterized in that a flange vertical plate and a double-inclined-table vertical plate which are parallel to each other are installed on the surface of the bottom plate, a seat body positioning structure is arranged between the flange vertical plate and the double-inclined-table vertical plate, and a similar-triangle pressing set is arranged on the periphery of the seat body positioning structure in a surrounding mode.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning jigs for Z-shaped seat body workpieces, and particularly relates to a rotary vertical hydraulic jig for Z-shaped seat body workpieces. Background Art

[0002] Z-shaped seat body workpieces are applied to engineering machinery. The workpiece structure is complex, there are many machining dimensions, and the machining accuracy requirements are relatively high. The existing Z-shaped seat body jigs are manual jigs. It is very difficult to keep the clamping force of the manual tooling uniform, resulting in easy force deformation of the workpiece during the machining process. Moreover, the manual positioning and clamping are cumbersome and complex, and the positioning accuracy is poor. Summary of the Utility Model

[0003] Aiming at the disadvantages of the existing Z-shaped seat body jig, such as uneven force on the workpiece when manually clamping the workpiece, high workpiece deformation rate, cumbersome and complex manual positioning and clamping, and poor positioning accuracy, the utility model provides a rotary vertical hydraulic jig for Z-shaped seat body workpieces, which can provide a uniform pressing force, has a lower workpiece machining deformation rate, automatically clamps the workpiece, is simple to operate, and has a higher positioning accuracy.

[0004] The utility model provides the following technical solutions: It includes a bottom plate, and is characterized in that: parallel flange vertical plates and double inclined platform vertical plates are installed on the surface of the bottom plate, a seat body positioning structure is arranged between the flange vertical plate and the double inclined platform vertical plate, and a triangular pressing group is arranged around the seat body positioning structure.

[0005] It is further characterized in that:

[0006] The seat body positioning structure includes a positioning block. The upper end of the positioning block is set to be arc-shaped to match the arc groove at the bottom of the workpiece. A shallow groove is arranged in the middle of its surface. Three positioning pins are arranged around the positioning block in a triangular distribution. The positioning block is embedded in the bottom plate. A groove adapted to the push block is opened at the bottom end of the positioning block. A spring is arranged between the positioning block and the cone block. On both sides of the cone block, the positioning block is connected to the mounting plate through a compression spring, and the mounting plate is installed at the bottom of the bottom plate. A support block is arranged behind the positioning pin near the double inclined platform vertical plate, and the support block fixedly supports the rear wall of the workpiece;

[0007] The triangular pressing group includes a groove-side pressing block, a seat-top pressing block, and a bottom-side pressing block. The tails of the groove-side pressing block and the seat-top pressing block are respectively connected to a groove pressing oil cylinder and a stepped platform oil cylinder. The groove pressing oil cylinder and the stepped platform oil cylinder are respectively installed on the bottom plate and the stepped platform base. Flanges are provided on both the groove pressing oil cylinder and the stepped platform oil cylinder, and flange bumps are provided on the flange surfaces. The middle parts of the groove-side pressing block and the seat-top pressing block are rotationally connected to the flange bumps through connecting plates. Hinge frames are rotationally connected to both sides of the head of the bottom-side pressing block. The tail of the bottom-side pressing block is connected to a bottom plate oil cylinder through a rotation limiter. The rotation limiter has a limiting rotation effect on the bottom-side pressing block. After the oil rod of the bottom plate oil cylinder extends, the rotation limiter drives the bottom-side pressing block to move, causing the head of the bottom-side pressing block to press downward.

[0008] One side plate surface of the flange vertical plate is fixedly connected to the flange plate through a flange block, and symmetrically arranged limit pins are installed at the diagonal of the other side plate surface.

[0009] The double-stepped platform vertical plate is composed of a left half-stepped platform and a right half-stepped platform. A parallel connection block and a limit oil cylinder are sequentially arranged on the outside of the left half-stepped platform. A stepped platform oil cylinder is installed on the surface of the right half-stepped platform, and the outer body of the right half-stepped platform is fixedly connected to the stepped platform base.

[0010] Limit push rods are symmetrically installed on one side of the parallel connection block facing the left half-stepped platform, and the other side is fixedly connected to the oil rod of the limit oil cylinder. Two pairs of symmetrically arranged and closely fitting limit columns are provided on both sides of the parallel connection block. The limit oil cylinder is fixedly connected to the left half-stepped platform through the limit columns. The position where the rod head of the limit push rod on the parallel connection block penetrates the left half-stepped platform corresponds to the position of the pin head of the limit pin. The limit columns have a limiting movement effect on the parallel connection block.

[0011] Reinforcing plates are installed in parallel below the bottom plate.

[0012] The reinforcing plates and the bottom plate are fixedly connected to a flange plate on the same side.

[0013] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0014] By setting a seat body positioning structure, the positioning block adapts to the groove at the bottom of the workpiece to initially fix it. A pressure spring and a cone are provided below the positioning block. When the workpiece is pressed, it will move downward. The positioning block compresses the spring downward until the groove below the positioning block and the cone are closely attached and pressed. The positioning pins distributed in a triangle will further strengthen the fixation of the bottom of the workpiece after the workpiece is pressed.

[0015] The connecting plate guiding pressing block rotates and presses downwards. The groove edge pressing block, seat top pressing block and bottom edge pressing block on the triangular pressing group press downwards on the right-angle side wall, top seat and bottom edge of the workpiece respectively. The rotation limiter and hinge bracket ensure that the bottom edge pressing block can rotate and move downwards within an appropriate range, providing a strong guarantee for pressing the bottom edge of the workpiece. The inclined platform oil cylinder corresponds to the seat top pressing block to provide support under the bottom of the workpiece. The setting of the connecting block ensures the synchronous advancement of the limit push rod. The limit push rod on the connecting block will push the workpiece from the side of the workpiece and fix it on the limit pin, accurately positioning the workpiece, reducing the positioning time and positioning error compared with the manual fixture, and improving the production efficiency. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present invention;

[0017] Figure 2 is the overall working structural schematic diagram of the present invention;

[0018] Figure 3 is the bottom view of the present invention;

[0019] Figure 4 is the seat body positioning structural schematic diagram of the present invention;

[0020] Figure 5 is the limit oil cylinder structural schematic diagram of the present invention;

[0021] Figure 6 is the schematic diagram of the positioning block embedded in the bottom plate of the present invention;

[0022] Figure 7 is the positioning block structural schematic diagram of the present invention

[0023] Figure 8 is the bottom edge pressing block and hinge bracket structural schematic diagram of the present invention

[0024] Figure 9 is the workpiece schematic diagram of the present invention.

[0025] Description of the Reference Numerals:

[0026] 1. Flange; 2. Rib plate; 3. Bottom plate; 4. Flange vertical block; 5. Flange vertical plate; 6. Limit pin; 7. Groove edge pressing block; 8. Seat top pressing block; 9. Support block; 10. Double inclined platform vertical plate; 11. Inclined platform oil cylinder; 12. Ladder platform base; 13. Ladder platform oil cylinder; 14. Connecting plate; 15. Flange convex block; 16. Connecting block; 17. Limit push rod; 18. Limit oil cylinder; 19. Limit column; 20. Bottom edge pressing block; 21. Rotation limiter; 22. Bottom plate oil cylinder; 23. Cone block; 24. Positioning block; 25. Positioning pin; 26. Compression spring; 27. Hinge bracket; 28. Groove pressing oil cylinder; 29. Mounting plate. Specific Embodiment

[0027] The present utility model provides a Z-shaped seat body workpiece turning and vertical adding hydraulic fixture as shown in Figures 1-9 . It includes a bottom plate 3. Below the bottom plate 3, rib plates 2 of the same size are installed in parallel. On the same side of the rib plates 2 and the bottom plate 3, a flange 1 is fixedly connected. On the surface of the bottom plate 3, a flange vertical plate 5 and a double inclined platform vertical plate 10 are installed in parallel. A seat body positioning structure is arranged between the flange vertical plate 5 and the double inclined platform vertical plate 10. Around the seat body positioning structure, a triangular-like pressing group is arranged in a surrounding manner;

[0028] The seat body positioning structure includes a positioning block 24. The upper end of the positioning block 24 is provided with an arc shape adapted to the arc groove at the bottom of the workpiece. In the middle part of its surface, a shallow groove is provided. Around the positioning block 24, three positioning pins 25 are distributed in a triangular shape (see Figure 4 ). The positioning block 24 is embedded in the bottom plate 3 (see Figure 6 ). At the bottom end of the positioning block 24, a groove adapted to the cone block 23 is opened. A spring is arranged between the positioning block 24 and the cone block 23. On both sides of the cone block 23, the positioning block 24 is connected to the mounting plate 29 through a compression spring 26 (see Figure 7 ). The mounting plate 29 is installed at the bottom of the bottom plate 3 (see Figure 3 ). Behind the positioning pin 25 near the double inclined platform vertical plate 10, a support block 9 is provided. The support block 9 fixedly supports the rear wall of the workpiece;

[0029] See Figure 1 . The triangular-like pressing group includes a groove edge pressing block 7, a seat top pressing block 8, and a bottom edge pressing block 20. The tails of the groove edge pressing block 7 and the seat top pressing block 8 are respectively connected to a groove pressing oil cylinder 28 and a stepped platform oil cylinder 13. The groove pressing oil cylinder 28 and the stepped platform oil cylinder 13 are respectively installed on the bottom plate 3 and the stepped platform base 12. Flanges are provided on both the groove pressing oil cylinder 28 and the stepped platform oil cylinder 13, and flange convex blocks 15 are provided on the flange surfaces. The middle parts of the groove edge pressing block 7 and the seat top pressing block 8 are respectively rotatably connected to the flange convex blocks 15 through a connecting plate 14. The connecting plate 14 can guide the pressing block to rotate and press down. On both sides of the head of the bottom edge pressing block 20, hinge frames 27 are rotatably connected. The tail of the bottom edge pressing block 20 is connected to the bottom plate oil cylinder 22 through a rotation limiter 21. The rotation limiter 21 has a limiting rotation effect on the bottom edge pressing block 20. After connecting the hinge frames 27, when the oil cylinder rod of the bottom plate oil cylinder 22 extends, the rotation limiter 21 drives the bottom edge pressing block 20 to move, and then the head of the bottom edge pressing block 20 presses down for clamping;

[0030] See Figure 4 , Figure 5, one side surface of the flange vertical plate 5 is fixedly connected to the flange plate 1 through the flange vertical block 4, and symmetrically arranged limit pins 6 are installed at the diagonal positions of the other side surface. The double inclined platform vertical plate 10 is composed of a left half inclined platform and a right half inclined platform. A parallel connection block 16 and a limit oil cylinder 18 are sequentially arranged on the outer side of the left half inclined platform. Limit push rods 17 are symmetrically installed on one side of the parallel connection block 16 facing the left half inclined platform, and the other side is fixedly connected to the oil rod of the limit oil cylinder 18. Two pairs of symmetrically arranged limit columns 19 that are closely attached to the body are arranged on both sides of the parallel connection block 16. The limit oil cylinder 18 is fixedly connected to the left half inclined platform through the limit columns 19. The position where the push rod head of the limit push rod 17 on the parallel connection block 16 passes through the left half inclined platform corresponds to the position of the pin head of the limit pin 6. The limit columns 19 play a role in limiting the movement of the parallel connection block 16. An inclined platform oil cylinder 11 is installed on the surface of the right half inclined platform, and the inclined platform oil cylinder 11 will provide internal support under the lower part of the top of the workpiece. The outer platform body of the right half inclined platform is fixedly connected to the stepped base 12.

[0031] The working principle of the present utility model:

[0032] Refer to the attached Figures 1-9 , when using the present utility model, first place the workpiece on the positioning block 24. At this time, start the limit oil cylinder 18. The limit push rod 17 installed on the parallel connection block 16 pushes the workpiece, and under the combined action of the limit pins 6, the workpiece is fixed. Then start the groove pressing oil cylinder 11, the stepped platform oil cylinder 13, and the bottom plate oil cylinder 22 in the triangular pressing group to drive the corresponding groove side pressing block 7, the seat top pressing block 8, and the bottom side pressing block 20 to move. The positioning block 24 will move downward as the workpiece is pressed down until the bottom surface of the workpiece is closely attached to the positioning pin. Subsequently, the inclined platform oil cylinder 11 on the double inclined platform vertical plate 10 moves upward to support the top of the workpiece. At this time, the clamping of the workpiece is completed. After the processing is completed, the working elements of each oil cylinder are reset, and the part can be taken out. The operation is simple and the positioning is accurate, which can greatly improve the production efficiency.

Claims

1. A Z-shaped seat body workpiece turning and standing hydraulic fixture, which includes a bottom plate, and is characterized in that: The surface of the bottom plate is provided with parallel flange vertical plates and double inclined platform vertical plates. A seat positioning structure is arranged between the flange vertical plates and the double inclined platform vertical plates, and a triangular-like pressing group is arranged around the seat positioning structure.

2. The hydraulic fixture for rotary vertical machining of a Z-shaped seat workpiece according to claim 1, characterized in that: The seat positioning structure includes a positioning block. The upper end of the positioning block is arc-shaped and adapted to the arc groove at the bottom of the workpiece. A shallow groove is provided in the middle part of its surface. Three positioning pins are arranged around the positioning block in a triangular distribution. The positioning block is embedded in the bottom plate. A groove adapted to the cone block is provided at the bottom end of the positioning block. A spring is arranged between the positioning block and the cone block. On both sides of the cone block, the positioning block is connected to the mounting plate through a compression spring. The mounting plate is mounted on the bottom of the bottom plate. A support block is arranged behind the positioning pin near the double inclined platform vertical plate, and the support block fixedly supports the rear wall of the workpiece.

3. A Z-shaped seat body workpiece turning and erecting hydraulic fixture according to claim 1 or 2, characterized in that: The triangular-like pressing group includes a groove-side pressing block, a seat-top pressing block, and a bottom-side pressing block. The tails of the groove-side pressing block and the seat-top pressing block are respectively connected to a groove pressing oil cylinder and a trapezoidal platform oil cylinder. The groove pressing oil cylinder and the trapezoidal platform oil cylinder are respectively mounted on the bottom plate and the trapezoidal platform base. Flanges are provided on both the groove pressing oil cylinder and the trapezoidal platform oil cylinder, and flange bumps are provided on the flange surfaces. The middle parts of the groove-side pressing block and the seat-top pressing block are rotationally connected to the flange bumps through connecting plates. Hinge brackets are rotationally connected to both sides of the head of the bottom-side pressing block, and the tail of the bottom-side pressing block is connected to the bottom plate oil cylinder through a rotation limiter. The rotation limiter has a limiting rotation effect on the bottom-side pressing block. After the oil rod of the bottom plate oil cylinder extends, the rotation limiter drives the bottom-side pressing block to move, causing the head of the bottom-side pressing block to press downwards.

4. A Z-shaped seat body workpiece rotary vertical hydraulic fixture according to claim 3, characterized in that: One side plate surface of the flange vertical plate is fixedly connected to a flange through a flange block, and symmetrically arranged limit pins are installed at the diagonal of the other side plate surface.

5. A Z-shaped seat body workpiece rotary vertical hydraulic fixture according to claim 1 or 2, characterized in that: The double inclined platform vertical plate is composed of a left half inclined platform and a right half inclined platform. A parallel-connected block and a limit oil cylinder are sequentially arranged on the outside of the left half inclined platform. A slant platform oil cylinder is installed on the surface of the right half inclined platform, and the outer side body of the right half inclined platform is fixedly connected to the trapezoidal platform base.

6. A Z-shaped seat body workpiece rotary vertical hydraulic fixture according to claim 5, characterized in that: The parallel-connected block symmetrically installs limit push rods on the side facing the left half inclined platform, and the other side is fixedly connected to the oil rod of the limit oil cylinder. Two pairs of symmetrically arranged and closely fitting limit columns are provided on both sides of the parallel-connected block. The limit oil cylinder is fixedly connected to the left half inclined platform through the limit columns. The position where the rod head of the limit push rod on the parallel-connected block penetrates the left half inclined platform corresponds to the position of the limit pin head. The limit columns play a role in limiting the movement of the parallel-connected block.

7. A Z-shaped seat body workpiece rotary vertical machining center hydraulic fixture according to claim 6, characterized in that: Reinforcing plates are installed in parallel below the bottom plate.

8. A Z-shaped seat body workpiece rotary vertical hydraulic fixture according to claim 7, characterized in that: The reinforcing plates and the bottom plate are fixedly connected to a flange on the same side.

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