A positioning fixture for rough machining of a cylinder block of a gasoline engine

Abstract

This utility model provides a positioning fixture for rough machining of gasoline engine cylinder blocks, relating to the field of gasoline engine cylinder block machining technology. It includes a worktable with support legs fixedly mounted on its lower surface. A clamping plate is provided on the surface of the worktable, with anti-slip pads on the sides of the clamping plate. A positioning mechanism is provided on the upper surface of the clamping plate. This utility model uses a hydraulic cylinder to move the clamping plate along the sliding rod direction and automatically resets it under the action of a tension spring. This allows for rapid clamping and releasing of the gasoline engine cylinder block, improving the automation level and machining efficiency of the fixture. Simultaneously, the force is evenly distributed during clamping, effectively preventing displacement or vibration of the cylinder block during rough machining, thus improving machining accuracy and safety. Furthermore, by rotating the rotating head, the threaded rod is rotated, thereby controlling the movement of the lower pressure plate along the sliding groove direction to achieve auxiliary clamping of the cylinder block, ensuring stability during machining.

Description

Technical Field

[0001] This utility model relates to the field of gasoline engine cylinder block machining technology, and in particular to a rough machining positioning fixture for gasoline engine cylinder blocks. Background Technology

[0002] Gasoline engine cylinder block machining is a key step in engine manufacturing, and its machining quality directly affects the engine's performance and reliability. In the rough machining stage, the cylinder block needs to go through multiple processes such as milling, drilling, and boring. During this process, precise positioning and stable clamping are the foundation for ensuring machining accuracy and product quality.

[0003] In the existing technology, although some hydraulic clamps can achieve automated clamping, they lack auxiliary positioning function for the upper surface of the cylinder. Relying solely on side clamping may cause the upper surface of the cylinder to warp or shift due to cutting force, affecting machining stability. In addition, existing clamps do not have protective structures, and chips or coolant generated during machining can easily splash onto the operating area or precision equipment, posing safety hazards and affecting the workshop environment. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of poor clamping stability, lack of auxiliary positioning function and lack of protective structure in the existing technology, and to propose a positioning fixture for rough machining of gasoline engine cylinder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a positioning fixture for rough machining of a gasoline engine cylinder block, comprising a worktable, a support leg fixedly mounted on the lower surface of the worktable, a clamping plate provided on the surface of the worktable, an anti-slip pad provided on the side of the clamping plate, a positioning mechanism provided on the upper surface of the clamping plate, a vertical plate fixedly mounted on the surface of the worktable, a hydraulic cylinder fixedly mounted on the side of the vertical plate, a connecting block fixedly mounted on the side of the clamping plate, a horizontal plate fixedly mounted on the surface of the worktable, a sliding rod fixedly mounted inside the horizontal plate, and a tension spring sleeved on the surface of the sliding rod;

[0006] The positioning mechanism includes a mounting plate, a lower pressure plate on the side of the mounting plate, a sliding block fixedly connected to the side of the lower pressure plate, a sliding groove on the side of the mounting plate, and a threaded rod rotatably connected inside the mounting plate, with a rotating head fixedly installed at one end of the threaded rod.

[0007] Preferably, the output end of the hydraulic cylinder is fixedly connected to the side of the clamping plate.

[0008] Preferably, the connecting block and the slide rod are slidably connected.

[0009] Preferably, one end of the tension spring is fixedly connected to the side of the connecting block, and the other end of the tension spring is fixedly connected to the inner side of the cross plate.

[0010] Preferably, the lower surface of the mounting plate is fixedly connected to the upper surface of the clamping plate, the sliding block is slidably connected to the sliding groove, and the threaded rod is threadedly connected to the sliding block.

[0011] Preferably, the surface of the workbench is provided with a protective mechanism, the protective mechanism including a protective plate, an adjusting plate slidably connected inside the protective plate, a moving block fixedly connected to the side of the adjusting plate, an adjusting rod rotatably connected inside the protective plate, an adjusting head fixedly installed at one end of the adjusting rod, and a guide rod fixedly installed inside the protective plate.

[0012] Preferably, the adjusting rod and the moving block are threaded together, and the moving block and the guide rod are slidably connected.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting a hydraulic cylinder to drive the clamping plate to move along the slide bar direction and achieve automatic reset under the action of the tension spring, the clamping and release operation of the gasoline engine cylinder block can be completed quickly, improving the automation level and processing efficiency of the fixture. At the same time, the force is uniform during the clamping process, effectively preventing displacement or vibration of the cylinder block during rough machining, improving machining accuracy and safety. Furthermore, by rotating the rotating head to drive the threaded rod to rotate, the lower pressure plate is controlled to move along the slide groove direction, thereby achieving auxiliary clamping of the cylinder block and ensuring stability during the machining process.

[0015] 2. In this utility model, by setting up a protective mechanism, including an adjustable protective plate, an adjusting plate, a moving block and an adjusting rod assembly, the operating area can be effectively shielded during the processing to prevent cutting chips from flying and improve the safety of the working environment. At the same time, the height of the adjusting plate can be adjusted by rotating the adjusting rod with the adjusting head, so that the protective mechanism can be adapted to the processing needs of cylinders of different sizes, enhancing the versatility and practicality of the equipment. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a positioning fixture for rough machining of a gasoline engine cylinder block is provided for this utility model;

[0017] Figure 2 A top view of a rough machining positioning fixture for a gasoline engine cylinder block is provided for this utility model;

[0018] Figure 3 This utility model provides exploded views of the clamping plate, connecting block, slide bar, and tension spring of a positioning fixture for rough machining of a gasoline engine cylinder block;

[0019] Figure 4 This utility model provides an exploded view of the lower pressure plate of a positioning fixture for rough machining of a gasoline engine cylinder block;

[0020] Figure 5 This utility model provides a sectional view of the protective plate of a positioning fixture for rough machining of a gasoline engine cylinder block.

[0021] Legend: 1. Workbench; 2. Support leg; 3. Clamping plate; 4. Anti-slip mat; 5. Positioning mechanism; 501. Mounting plate; 502. Lower pressure plate; 503. Sliding block; 504. Slide groove; 505. Threaded rod; 506. Rotary head; 6. Vertical plate; 7. Hydraulic cylinder; 8. Connecting block; 9. Horizontal plate; 10. Slide rod; 11. Tension spring; 12. Protective mechanism; 121. Protective plate; 122. Adjusting plate; 123. Moving block; 124. Adjusting rod; 125. Adjusting head; 126. Guide rod. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figures 1-5As shown, this utility model provides a technical solution: a positioning fixture for rough machining of a gasoline engine cylinder block, including a worktable 1, a support leg 2 fixedly installed on the lower surface of the worktable 1, a clamping plate 3 provided on the surface of the worktable 1, an anti-slip pad 4 provided on the side of the clamping plate 3, a positioning mechanism 5 provided on the upper surface of the clamping plate 3, a vertical plate 6 fixedly installed on the surface of the worktable 1, a hydraulic cylinder 7 fixedly installed on the side of the vertical plate 6, a connecting block 8 fixedly installed on the side of the clamping plate 3, a horizontal plate 9 fixedly installed on the surface of the worktable 1, a slide rod 10 fixedly installed inside the horizontal plate 9, a tension spring 11 sleeved on the surface of the slide rod 10, and the positioning mechanism 5 including a mounting plate 501, a lower pressure plate provided on the side of the mounting plate 501. 502, a sliding block 503 is fixedly connected to the side of the lower pressure plate 502, a sliding groove 504 is provided on the side of the mounting plate 501, a threaded rod 505 is rotatably connected inside the mounting plate 501, a rotating head 506 is fixedly installed at one end of the threaded rod 505, the output end of the hydraulic cylinder 7 is fixedly connected to the side of the clamping plate 3, the connecting block 8 is slidably connected to the sliding rod 10, one end of the tension spring 11 is fixedly connected to the side of the connecting block 8, the other end of the tension spring 11 is fixedly connected to the inner side of the horizontal plate 9, the lower surface of the mounting plate 501 is fixedly connected to the upper surface of the clamping plate 3, the sliding block 503 is slidably connected to the sliding groove 504, and the threaded rod 505 is threadedly connected to the sliding block 503.

[0025] In this embodiment, by setting the hydraulic cylinder 7 to drive the clamping plate 3 to move along the slide bar 10 and achieve automatic reset under the action of the tension spring 11, the clamping and release operation of the gasoline engine cylinder block can be completed quickly, improving the automation level and processing efficiency of the fixture. At the same time, the force is uniform during the clamping process, effectively preventing displacement or vibration of the cylinder block during rough machining, improving machining accuracy and safety. Furthermore, by rotating the rotating head 506 to drive the threaded rod 505 to rotate, the lower pressure plate 502 is controlled to move along the slide groove 504, thereby achieving auxiliary clamping of the cylinder block and ensuring stability during the machining process.

[0026] Example 2: As Figures 1-5 As shown, the surface of the workbench 1 is provided with a protective mechanism 12. The protective mechanism 12 includes a protective plate 121. An adjusting plate 122 is slidably connected inside the protective plate 121. A moving block 123 is fixedly connected to the side of the adjusting plate 122. An adjusting rod 124 is rotatably connected inside the protective plate 121. An adjusting head 125 is fixedly installed at one end of the adjusting rod 124. A guide rod 126 is fixedly installed inside the protective plate 121. The adjusting rod 124 and the moving block 123 are threadedly connected. The moving block 123 and the guide rod 126 are slidably connected.

[0027] In this embodiment, by setting up a protective mechanism 12, including an adjustable protective plate 121, an adjusting plate 122, a moving block 123, and an adjusting rod 124 assembly, the operating area can be effectively shielded during processing to prevent cutting debris from flying and improve the safety of the working environment. At the same time, the height of the adjusting plate 122 can be adjusted by rotating the adjusting rod 124 through the adjusting head 125, so that the protective mechanism 12 can be adapted to the processing requirements of cylinders of different sizes, enhancing the versatility and practicality of the equipment.

[0028] The working principle of this embodiment is as follows: First, the gasoline engine cylinder block to be processed is placed on the surface of the workbench 1 and positioned between the clamping plates 3. Then, the hydraulic cylinder 7 is activated, pushing the clamping plates 3 along the slide rod 10. Guided by the connecting block 8 and the slide rod 10, the clamping plates 3 move towards the center, thus achieving initial clamping of the cylinder block. Simultaneously, the tension spring 11 is stretched during clamping, providing a restoring force for subsequent release. After clamping, the operator rotates the rotary head 506, causing the threaded rod 505 to rotate, making the sliding block 503 slide within the slide groove 504 and causing the lower pressure plate 502 to move downwards, completing the auxiliary clamping of the top of the cylinder block and ensuring its stability during processing. At the same time, depending on the height of the cylinder block and the processing area, the adjusting head 125 rotates the adjusting rod 124, causing the moving block 123 to slide along the guide rod 126, moving the adjusting plate 122 up and down. After adjusting to a suitable position, the processing area is shielded to prevent cutting debris from splashing and affecting operational safety.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A rough machining positioning fixture for a gasoline engine cylinder block, comprising a worktable (1), characterized in that: The workbench (1) has a support leg (2) fixedly installed on its lower surface. The workbench (1) has a clamping plate (3) on its surface. The clamping plate (3) has an anti-slip pad (4) on its side. The clamping plate (3) has a positioning mechanism (5) on its upper surface. The workbench (1) has a vertical plate (6) fixedly installed on its surface. The vertical plate (6) has a hydraulic cylinder (7) fixedly installed on its side. The clamping plate (3) has a connecting block (8) fixedly installed on its side. The workbench (1) has a horizontal plate (9) fixedly installed on its surface. The horizontal plate (9) has a slide rod (10) fixedly installed inside its interior. The slide rod (10) has a tension spring (11) sleeved on its surface. The positioning mechanism (5) includes a mounting plate (501), a lower pressure plate (502) is provided on the side of the mounting plate (501), a sliding block (503) is fixedly connected to the side of the lower pressure plate (502), a sliding groove (504) is provided on the side of the mounting plate (501), a threaded rod (505) is rotatably connected inside the mounting plate (501), and a rotating head (506) is fixedly installed at one end of the threaded rod (505).

2. The gasoline engine cylinder block rough machining positioning fixture according to claim 1, characterized in that: The output end of the hydraulic cylinder (7) is fixedly connected to the side of the clamping plate (3).

3. The gasoline engine cylinder block rough machining positioning fixture according to claim 1, characterized in that: The connecting block (8) is slidably connected to the slide rod (10).

4. The gasoline engine cylinder block rough machining positioning fixture according to claim 1, characterized in that: One end of the tension spring (11) is fixedly connected to the side of the connecting block (8), and the other end of the tension spring (11) is fixedly connected to the inner side of the horizontal plate (9).

5. The gasoline engine cylinder block rough machining positioning fixture according to claim 1, characterized in that: The lower surface of the mounting plate (501) is fixedly connected to the upper surface of the clamping plate (3), the sliding block (503) is slidably connected to the slide groove (504), and the threaded rod (505) is threadedly connected to the sliding block (503).

6. The gasoline engine cylinder block rough machining positioning fixture according to claim 1, characterized in that: The surface of the workbench (1) is provided with a protective mechanism (12), the protective mechanism (12) includes a protective plate (121), an adjusting plate (122) is slidably connected inside the protective plate (121), a moving block (123) is fixedly connected to the side of the adjusting plate (122), an adjusting rod (124) is rotatably connected inside the protective plate (121), an adjusting head (125) is fixedly installed at one end of the adjusting rod (124), and a guide rod (126) is fixedly installed inside the protective plate (121).

7. The gasoline engine cylinder block rough machining positioning fixture according to claim 6, characterized in that: The adjusting rod (124) is threadedly connected to the moving block (123), and the moving block (123) is slidably connected to the guide rod (126).

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