A production fixture for turning diesel engine cylinder heads

Abstract

This utility model discloses a production fixture for turning diesel engine cylinder heads, including a worktable with legs installed at the bottom and a baffle fixed at the top. A guide mechanism is provided at the top of the worktable, and an L-shaped plate is fixed to the top of the guide mechanism. A pressing mechanism is provided on one side of the worktable. A guide groove is formed at the top of the worktable, and guide rails are installed on both sides of the inner wall of the guide groove. A slider one is slidably connected to the inner wall of the guide rails and is fixedly connected to a connecting block. A sliding groove is formed at the bottom of the guide groove, and a slider two is fixed to the bottom of slider one. This utility model provides guidance for the L-shaped plate during its movement through the guide mechanism. Simultaneously, the pressing mechanism drives the L-shaped plate to move, preventing it from retracting due to the reaction force of the cylinder head. Furthermore, the guide mechanism ensures that the clamping force generated by the pressing mechanism when holding the cylinder head is consistent, preventing cylinder head deformation due to uneven force.

Description

Technical Field

[0001] This utility model relates to the field of cylinder head manufacturing technology, and in particular to a production fixture for turning diesel engine cylinder heads. Background Technology

[0002] In the existing technology, the cylinder head of a diesel engine is one of the key components of a diesel engine. Its main function is to seal the upper part of the cylinder and, together with the piston and cylinder liner, form a closed combustion space to provide the necessary high-pressure environment for fuel combustion.

[0003] A search revealed a utility model patent with Chinese patent publication number CN223198611U, which discloses a clamping structure for a diesel engine cylinder head, including a base plate; a bracket and an adjusting structure are respectively provided on the base plate; a positioning pin is provided on the adjusting structure; a pressure plate is provided on the bracket; a cylinder is provided between the pressure plate and the positioning pin; the adjusting structure can adjust the installation position of the positioning pin, and can adapt to the hole positions of the positioning holes at the bottom of cylinder heads of different specifications. However, in practical applications, pressure fluctuations in multiple cylinders may lead to inconsistent clamping forces, resulting in uneven stress on the cylinder head. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a production fixture for turning diesel engine cylinder heads.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A production fixture for turning diesel engine cylinder heads includes a worktable, a support frame installed at the bottom of the worktable, a baffle fixed at the top of the worktable, a guide mechanism provided at the top of the worktable, an L-shaped plate fixed at the top of the guide mechanism, and a pressing mechanism provided on one side of the worktable.

[0006] As a further embodiment of this utility model: the guiding mechanism includes a connecting block, a guide rail, a first slider, a guide groove, and a second slider, with the connecting block fixed to the bottom of the L-shaped plate.

[0007] As a further embodiment of this utility model: a guide groove is provided on the top of the workbench, and guide rails are installed on both sides of the inner wall of the guide groove. Slider 1 is slidably connected to the inner wall of the guide rail, and slider 1 is fixedly connected to the connecting block. A sliding groove is provided at the bottom of the guide groove, and slider 2 is fixed to the bottom of slider 1, and slider 2 is slidably connected to the inner wall of the sliding groove.

[0008] As a further embodiment of this utility model: the extrusion mechanism includes a screw, a drive gear, a driven gear, a cylinder, a motor, a mounting bracket, an extrusion plate, a displacement block, and a limiting block, and the cylinder is fixed to one side of the worktable.

[0009] As a further embodiment of this utility model: the passive gear is rotatably connected to one side of the cylinder, the screw is threadedly connected to the inner wall of the passive gear, and the mounting bracket is fixed to one side of the worktable.

[0010] As a further embodiment of this utility model: the motor is mounted on the top of the mounting bracket, the drive gear is fixed to the output end of the motor, and the driven gear meshes with the drive gear. The displacement block is fixed to one end of the screw, and the displacement block has a groove.

[0011] As a further embodiment of this utility model: the limiting block is fixed to the inner wall of the cylinder, and the displacement block slides in cooperation with the limiting block, and the limiting block passes through one side of the worktable, and the extrusion plate is fixed to one end of the displacement block.

[0012] Compared with the prior art, this utility model provides a production fixture for turning diesel engine cylinder heads, which has the following advantages: First, the cylinder head is placed on the L-shaped plate, and the extrusion mechanism is activated. The power generated by the extrusion mechanism pushes the L-shaped plate to move along the guide mechanism towards the baffle. During the movement, the guide mechanism constrains the movement trajectory of the L-shaped plate, and finally clamps the cylinder head between the L-shaped plate and the baffle, completing the clamping. Thus, the guide mechanism can provide guidance for the L-shaped plate during its movement, and the extrusion mechanism can drive the L-shaped plate to move without retracting due to the reaction force of the cylinder head. In addition, the guide mechanism ensures that the clamping force generated by the extrusion mechanism when clamping the cylinder head is consistent, preventing the cylinder head from deforming due to uneven force.

[0013] When the extrusion mechanism pushes the cylinder head, the connecting block at the bottom of the L-shaped plate drives slider one to slide along the guide rails on both sides of the guide groove. Slider two at the bottom of slider one is embedded in the slide groove at the bottom of the guide groove and slides synchronously. Slider two and the slide groove serve as the main load-bearing elements, bearing the pressure for the guide rails. During the movement of the cylinder head, the L-shaped plate pushes the cylinder head against the baffle until the cylinder head is tightly clamped between the L-shaped plate and the baffle. Thus, the guide rail and slider one cooperate to ensure that the L-shaped plate moves in a straight line, and the load capacity is improved through the cooperation of slider two and the slide groove.

[0014] After the motor is started, the motor output drives the drive gear to rotate, and then the power is transmitted to the driven gear, causing the driven gear to rotate synchronously on one side of the cylinder. When the driven gear rotates, the screw is affected by the thread, but under the restriction of the limit block and the groove, the screw cannot rotate, driving the screw to advance axially towards the inside of the worktable. When the screw advances, the displacement block drives the front end extrusion plate to move synchronously. After the extrusion plate contacts the L-shaped plate, it pushes the L-shaped plate to move along the guide mechanism towards the baffle, and finally the cylinder head is clamped between the L-shaped plate and the extrusion plate. After processing is completed, the motor reverses, the screw drives the extrusion plate to retract, and the cylinder head is released. Thus, the self-locking property of the threaded fit between the screw and the cylinder can prevent the screw from retracting due to the reaction force of the cylinder head even if the motor is powered off. In addition, the guide mechanism can ensure that the clamping force generated when the cylinder head is clamped is consistent, preventing the cylinder head from deforming due to uneven force.

[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0016] Figure 1 This is a front view of a production fixture for turning diesel engine cylinder heads according to the present invention; Figure 2 This is an enlarged detail view of the guide mechanism in a production fixture for turning a diesel engine cylinder head, as proposed in this utility model. Figure 3 An exploded view of the guide mechanism in a production fixture for turning a diesel engine cylinder head, as proposed in this utility model. Figure 4 This is a schematic diagram of the extrusion mechanism in a production fixture for turning diesel engine cylinder heads, as proposed in this utility model. Figure 5 This is an exploded view of the extrusion mechanism in a production fixture for turning a diesel engine cylinder head, as proposed in this utility model.

[0017] In the diagram: 1. Workbench; 2. Baffle; 3. Leg; 4. Guide mechanism; 5. L-shaped plate; 6. Extrusion mechanism; 401. Connecting block; 402. Guide rail; 403. Slider 1; 404. Guide groove; 405. Slider 2; 601. Screw; 602. Drive gear; 603. Driven gear; 604. Cylinder; 605. Motor; 606. Mounting bracket; 607. Extrusion plate; 608. Displacement block; 609. Limiting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] A production fixture for turning diesel engine cylinder heads, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the workbench 1 is equipped with a leg 3 at the bottom, a baffle 2 is fixed at the top of the workbench 1, a guide mechanism 4 is provided at the top of the workbench 1, an L-shaped plate 5 is fixed at the top of the guide mechanism 4, and a pressing mechanism 6 is provided on one side of the workbench 1.

[0022] First, the cylinder head is placed on the L-shaped plate 5, and the extrusion mechanism 6 is activated. The power generated by the extrusion mechanism 6 pushes the L-shaped plate 5 to move along the guide mechanism 4 towards the baffle 2. During the movement, the guide mechanism 4 constrains the movement trajectory of the L-shaped plate 5, and finally clamps the cylinder head between the L-shaped plate 5 and the baffle 2, thus completing the clamping. In this way, the guide mechanism 4 can provide guidance for the L-shaped plate 5 during its movement. At the same time, the extrusion mechanism 6 can drive the L-shaped plate 5 to move, preventing it from retracting due to the reaction force of the cylinder head during the extrusion process. In addition, the guide mechanism 4 works with the cylinder head to ensure that the clamping force generated by the extrusion mechanism 6 when clamping the cylinder head is consistent, preventing the cylinder head from deforming due to uneven force.

[0023] In order to provide guidance for the L-shaped plate 5 during its movement, such as Figure 2 and Figure 3As shown, the guiding mechanism 4 includes a connecting block 401, a guide rail 402, a first slider 403, a guide groove 404, and a second slider 405. The connecting block 401 is fixed to the bottom of the L-shaped plate 5. The top of the worktable 1 has a guide groove 404. The guide rail 402 is installed on both sides of the inner wall of the guide groove 404. The first slider 403 is slidably connected to the inner wall of the guide rail 402, and the first slider 403 is fixedly connected to the connecting block 401. The bottom of the guide groove 404 has a sliding groove. The second slider 405 is fixed to the bottom of the first slider 403, and the second slider 405 is slidably connected to the inner wall of the sliding groove.

[0024] When the extrusion mechanism 6 pushes the cylinder head, the connecting block 401 at the bottom of the L-shaped plate 5 drives the slider 403 to slide along the guide rails 402 on both sides of the guide groove 404. The slider 405 at the bottom of the slider 403 is embedded in the groove at the bottom of the guide groove 404 and slides synchronously. The slider 405 and the groove serve as the main load-bearing elements, bearing the pressure for the guide rails 402. During the movement of the cylinder head, the L-shaped plate 5 pushes the cylinder head against the baffle 2 until the cylinder head is tightly clamped between the L-shaped plate 5 and the baffle 2. Thus, the guide rails 402 and the slider 403 cooperate to ensure that the L-shaped plate 5 moves in a straight line, and the load capacity is improved by the cooperation of the slider 405 and the groove.

[0025] In order to move the L-shaped plate 5 to secure the cylinder head, such as Figure 4 and Figure 5 As shown, the extrusion mechanism 6 includes a screw 601, a drive gear 602, a driven gear 603, a cylinder 604, a motor 605, a mounting bracket 606, an extrusion plate 607, a displacement block 608, and a limiting block 609. The cylinder 604 is fixed to one side of the worktable 1, the driven gear 603 is rotatably connected to one side of the cylinder 604, the screw 601 is threaded to the inner wall of the driven gear 603, the mounting bracket 606 is fixed to one side of the worktable 1, and the motor 605... 5 is installed on the top of the mounting bracket 606. The drive gear 602 is fixed to the output end of the motor 605, and the driven gear 603 meshes with the drive gear 602. The displacement block 608 is fixed to one end of the screw 601, and the displacement block 608 has a groove. The limiting block 609 is fixed to the inner wall of the cylinder 604, and the displacement block 608 and the limiting block 609 slide together. The limiting block 609 passes through one side of the worktable 1. The extrusion plate 607 is fixed to one end of the displacement block 608.

[0026] After the motor 605 is started, the output end of the motor 605 drives the drive gear 602 to rotate, and then the power is transmitted to the driven gear 603, causing the driven gear 603 to rotate synchronously on one side of the cylinder 604. When the driven gear 603 rotates, the screw 601 is affected by the thread, but under the restriction of the limit block 609 and the groove, the screw 601 cannot rotate, driving the screw 601 to advance axially towards the inside of the worktable 1. When the screw 601 advances, the displacement block 608 drives the front end extrusion plate 607 to move synchronously, and the extrusion plate 607 contacts the L-shaped plate 5. After contact, the L-shaped plate 5 is pushed to move along the guide mechanism 4 towards the baffle 2, so that the cylinder head is clamped between the L-shaped plate 5 and the extrusion plate 607. After processing, the motor 605 reverses, and the screw 601 drives the extrusion plate 607 to retract, releasing the cylinder head. Thus, the self-locking property of the threaded engagement between the screw 601 and the cylinder 604 can prevent the screw 601 from retracting due to the reaction force of the cylinder head even if the motor 605 is de-energized. In addition, the guide mechanism 4 can ensure that the clamping force generated when the cylinder head is clamped is consistent, preventing the cylinder head from deforming due to uneven force.

[0027] Working principle: First, the cylinder head is placed on the L-shaped plate 5. Then, the extrusion mechanism 6 is activated. The power generated by the extrusion mechanism 6 pushes the L-shaped plate 5 along the guide mechanism 4 towards the baffle 2. During the movement, the guide mechanism 4 constrains the movement trajectory of the L-shaped plate 5, ultimately clamping the cylinder head between the L-shaped plate 5 and the baffle 2, completing the clamping process. When the extrusion mechanism 6 pushes the cylinder head, the connecting block 401 at the bottom of the L-shaped plate 5 drives the slider 403 to slide along the guide rails 402 on both sides of the guide groove 404. The slider 405 at the bottom of the slider 403 is embedded in the groove at the bottom of the guide groove 404 and slides synchronously. The slider 405 and the groove serve as the main load-bearing elements, bearing the pressure for the guide rails 402. During the movement of the cylinder head, the L-shaped plate 5 pushes the cylinder head against the baffle 2 until the cylinder head is tightly clamped between the L-shaped plate 5 and the baffle 2. After the motor 605 is started, the output end of the motor 605 drives the drive gear 602 to rotate, and then the power is transmitted to the driven gear 603, causing the driven gear 603 to rotate synchronously on one side of the cylinder 604. When the driven gear 603 rotates, the screw 601 is affected by the thread, but under the restriction of the limit block 609 and the groove, the screw 601 cannot rotate, driving the screw 601 to move axially towards the inside of the worktable 1. When the screw 601 moves forward, the displacement block 608 drives the front end extrusion plate 607 to move synchronously. After the extrusion plate 607 contacts the L-shaped plate 5, it pushes the L-shaped plate 5 to move along the guide mechanism 4 towards the baffle 2, and finally the cylinder head is clamped between the L-shaped plate 5 and the extrusion plate 607. After the processing is completed, the motor 605 reverses, the screw 601 drives the extrusion plate 607 to retract, and the cylinder head is released.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A production fixture for turning a diesel engine cylinder head, comprising a worktable (1), characterized in that, The workbench (1) is equipped with a leg (3) at the bottom, a baffle (2) is fixed at the top of the workbench (1), a guide mechanism (4) is provided at the top of the workbench (1), an L-shaped plate (5) is fixed at the top of the guide mechanism (4), and a pressing mechanism (6) is provided on one side of the workbench (1). The extrusion mechanism (6) includes a screw (601), a drive gear (602), a driven gear (603), a cylinder (604), a motor (605), a mounting bracket (606), an extrusion plate (607), a displacement block (608), and a limiting block (609). The cylinder (604) is fixed to one side of the worktable (1), the driven gear (603) is rotatably connected to one side of the cylinder (604), the screw (601) is threaded to the inner wall of the driven gear (603), and the mounting bracket (606) is fixed to one side of the worktable (1).

2. The production fixture for turning a diesel engine cylinder head according to claim 1, characterized in that, The guiding mechanism (4) includes a connecting block (401), a guide rail (402), a slider one (403), a guide groove (404), and a slider two (405). The connecting block (401) is fixed to the bottom of the L-shaped plate (5).

3. A production fixture for turning a diesel engine cylinder head according to claim 2, characterized in that, The workbench (1) has a guide groove (404) on the top. Guide rails (402) are installed on both sides of the inner wall of the guide groove (404). Slider 1 (403) is slidably connected to the inner wall of the guide rail (402), and slider 1 (403) is fixedly connected to the connecting block (401). A sliding groove is provided at the bottom of the guide groove (404). Slider 2 (405) is fixed to the bottom of slider 1 (403), and slider 2 (405) is slidably connected to the inner wall of the sliding groove.

4. The production fixture for turning a diesel engine cylinder head according to Claim 1, characterized by The motor (605) is mounted on the top of the mounting bracket (606), the drive gear (602) is fixed to the output end of the motor (605), and the driven gear (603) meshes with the drive gear (602). The displacement block (608) is fixed to one end of the screw (601), and the displacement block (608) has a groove.

5. The production fixture for turning a diesel engine cylinder head according to claim 1, characterized by The limiting block (609) is fixed to the inner wall of the cylinder (604), and the displacement block (608) slides in cooperation with the limiting block (609). The limiting block (609) passes through one side of the workbench (1), and the extrusion plate (607) is fixed to one end of the displacement block (608).

Images