A tooling suitable for machining an inclined drain hole of a cylinder

Abstract

The utility model discloses a tooling suitable for inclined blow -off hole of cylinder body processing, include: workstation, be provided with a plurality of parallelly arranged locating groove on the workstation, the locating groove is slidably provided with front support and rear support, and is in different locating groove, the top one side of front support is provided with front support surface, and the bottom surface of front support surface with front support is set angle, the side surface of front support still is provided with through -hole, the other side of front support top is provided with the waist hole, and the waist hole with through -hole intercommunication, be provided with rotating shaft in the through -hole, be provided with front positioning rod in the waist hole, and front positioning rod installs on rotating shaft, the top one side of rear support is provided with rear support surface, and rear support surface is lower than the top surface of rear support, and rear support surface with rear support's bottom surface is set angle, solved the problem that the inclined hole processing requires high to processing machine tool, avoided the additional cost consumed when turning over cylinder body simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool processing tooling technology, specifically relating to a tooling suitable for machining inclined drain holes in cylinder blocks. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] In the machining of cylinder block parts, due to the complex structure of the cylinder block, some surfaces to be machined are not in the conventional horizontal or vertical state. For holes in special locations, if the surface to be machined cannot maintain a specific angle with the axis of the machining tool such as the drill bit, it will be impossible to drill them. The drain hole of the 60 machine cylinder block is one such hole with a certain angle. The existing technology for machining this hole is to use a gantry milling machine with a "universal attachment head" to rotate it by 3.5°. This method has very high requirements for the machine tool and the attachment head. Moreover, the cylinder block needs to be flipped so that the fuel side faces upwards during machining, which increases the number of workpiece flips. The 60 machine cylinder block weighs 22T. The increase in the number of flips increases the safety risk. The machining method of gantry milling machine + "universal attachment head" is expensive. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a tooling suitable for machining oblique drain holes in cylinder blocks. It enables the machining of 3.5° oblique holes on a horizontal boring and milling machine using ordinary accessory drill bits, reducing the cost of the machining machine tool and avoiding the additional costs incurred by flipping the cylinder block, while also reducing the machining difficulty.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] This utility model provides a tooling suitable for machining inclined drain holes in cylinder blocks, including: a worktable, on which multiple positioning grooves are provided, the multiple positioning grooves being arranged in parallel; front supports and rear supports are slidably provided on the positioning grooves and are located in different positioning grooves, for supporting and positioning the cylinder block;

[0007] The front support has a front support surface on one side of its top, and the front support surface forms a set angle with the bottom surface of the front support. The front support also has a through hole on its side and a waist hole on the other side of its top. The waist hole communicates with the through hole. A rotating shaft is installed in the through hole and a front positioning rod is installed in the waist hole. The front positioning rod is mounted on the rotating shaft. When the rotating shaft rotates, the front positioning rod will swing in the waist hole, thereby pressing the cylinder body tightly.

[0008] The rear support has a rear support surface on one side of its top, and the rear support surface is lower than the top surface of the rear support. The rear support surface and the bottom surface of the rear support form a set angle, which is used to make the surface to be machined on the cylinder body form a set angle with the axis of the drill bit.

[0009] As a further implementation, there are two front supports, which are arranged in the same positioning groove; there are also two rear supports, which are arranged in the same positioning groove, and the front and rear supports are arranged opposite to each other.

[0010] As a further implementation, a cross section is formed between the rear support surface and the top surface of the rear support. The cross section enables the cylinder to be quickly positioned and prevents it from sliding further. A cylindrical clearance is provided at the connection between the bottom end of the cross section and the rear support surface to prevent the corners of the cylinder from interfering with the rear support.

[0011] As a further implementation, a threaded hole is provided on the top surface of the rear support, the axis of the threaded hole is perpendicular to the rear support surface, and a positioning screw is installed in the threaded hole.

[0012] As a further implementation, a clamping block is provided on the positioning screw, and the clamping block and the positioning screw can rotate relative to each other, which facilitates clamping or loosening the cylinder.

[0013] As a further implementation, a T-shaped slider is provided at the bottom of the front support and a T-shaped slider is also provided at the bottom of the rear support. The T-shaped slider is used to cooperate with the positioning groove to be fixedly installed on the worktable.

[0014] As a further implementation, the positioning groove has a T-shaped cross-section, and a 0.05mm gap is provided between the positioning groove and the T-shaped slider to facilitate the movement of the T-shaped slider in the positioning groove.

[0015] As a further implementation, both the front support surface of the front support and the rear support surface of the rear support undergo local heat treatment to prevent wear on the support surfaces caused by frequent contact with the cylinder block.

[0016] As a further implementation, the front positioning rod and the rotating shaft are connected by a thread.

[0017] As a further implementation, the diameter of the through hole is larger than the diameter of the rotating shaft, and the difference in size is less than 2 mm.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are:

[0019] This invention features a front support and a rear support that slide on a positioning groove and are positioned in different grooves to support and position the cylinder body. This allows operators to quickly adjust the positions of the front and rear supports according to different cylinder body sizes and processing requirements. The front and rear supports are positioned in different grooves, with two of each arranged opposite each other, to accommodate cylinder bodies of different sizes and achieve stable support. The rear support surface forms a set angle with the bottom surface of the rear support, and combined with the set angle between the front support surface and the bottom surface of the front support, this allows the surface of the cylinder body to be processed to form a specific angle with the drill bit axis, satisfying the requirement for drilling the cylinder body at a set angle.

[0020] This invention utilizes multi-angle positioning with front and rear supports, along with cross-sectional auxiliary positioning, to accurately determine the cylinder's position on the worktable. Combined with the positioning groove and T-shaped slider, it effectively reduces positioning errors, ensuring the cylinder's machining surface maintains a precise angle with the drill bit axis, significantly improving the dimensional and positional accuracy of the cylinder machining. The design of the T-shaped slider and positioning groove allows for quick and convenient adjustment of the front and rear supports, adapting to the machining needs of cylinders of different specifications, reducing tooling adjustment time, and improving production efficiency. Simultaneously, the quick-positioning cross-section design of the rear support also accelerates the cylinder clamping speed.

[0021] This invention employs a dual clamping method—the swing clamping of the front positioning rod and the clamping block combined with the positioning screw—to firmly fix the cylinder body from multiple directions. Even under significant cutting forces during machining, it ensures that the cylinder body does not shift or vibrate, improving machining stability and reducing scrap rate. The front support surface of the front support and the rear support surface of the rear support undergo localized heat treatment, greatly enhancing surface hardness and wear resistance. This effectively resists wear caused by frequent contact with the cylinder body, extending the service life of the support structure, reducing equipment maintenance costs, and ensuring the long-term stable operation of the machining system. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is a tooling structure diagram for machining oblique holes in the cylinder block of this utility model;

[0024] Figure 2 This is a front view of the front support of this utility model;

[0025] Figure 3 This is a top view of the front support of this utility model;

[0026] Figure 4 This is a front view of the rear support of this utility model;

[0027] Figure 5 This is a top view of the rear support of this utility model.

[0028] In the diagram: 1. Workbench; 2. Front support; 3. Rear support; 4. Positioning groove; 5. Cylinder body; 6. Through hole; 7. T-shaped slider; 8. Waist hole; 9. Front support surface; 10. Threaded hole; 11. Rear support surface. Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise expressly indicated by the present invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] This embodiment discloses a tooling suitable for machining oblique drain holes in cylinder blocks, such as... Figures 1-5 As shown, the fixture includes: a worktable 1, which serves as the main support for the entire tooling; multiple positioning slots 4 are provided on the worktable 1, and the multiple positioning slots 4 are arranged in parallel; a front support 2 and a rear support 3 are slidably disposed on the positioning slots 4 and are located in different positioning slots 4, for supporting and positioning the cylinder body 5, so that the operator can quickly adjust the position of the front support 2 and the rear support 3 according to different cylinder body 5 sizes and processing requirements; the front support 2 and the rear support 3 are located in different positioning slots 4, and there are two of each in a relatively opposite arrangement, which can adapt to cylinder bodies 5 of different sizes and achieve stable support;

[0032] The front support 2 has a front support surface 9 on one side of its top, and the front support surface 9 forms a set angle with the bottom surface of the front support 2. The front support 2 also has a through hole 6 on its side and a waist hole 8 on the other side of its top. The waist hole 8 communicates with the through hole 6. A rotating shaft is installed in the through hole 6 and a front positioning rod is installed in the waist hole 8. The front positioning rod is installed on the rotating shaft. When the operator rotates the rotating shaft, the front positioning rod swings under the limiting action of the waist hole 8, which can reliably press the cylinder 5 and prevent the cylinder 5 from shifting during the processing.

[0033] The rear support 3 has a rear support surface 11 on one side of its top, and the rear support surface 11 is lower than the top surface of the rear support 3. The rear support surface 11 and the bottom surface of the rear support 3 form a set angle, which is used to make the surface to be processed of the cylinder 5 form a set angle with the drill bit axis. Combined with the front support surface 9 and the bottom surface of the front support 2 forming a set angle, the surface to be processed of the cylinder 5 can form a specific angle with the drill bit axis, which meets the requirement that the cylinder 5 can achieve drilling processing at a set angle.

[0034] As a further implementation, there are two front supports 2, which are arranged in the same positioning groove 4; there are also two rear supports 3, which are arranged in the same positioning groove 4, and the front supports 2 and the rear supports 3 are arranged opposite to each other.

[0035] As a further implementation, a cross section is formed between the rear support surface 11 and the top surface of the rear support 3. The cross section enables the cylinder 5 to be quickly positioned and prevents it from sliding further. A cylindrical clearance is provided at the connection between the bottom end of the cross section and the rear support surface 11 to prevent the corners of the cylinder 5 from interfering with the rear support 3.

[0036] As a further implementation, a threaded hole 10 is provided on the top surface of the rear support 3. The axis of the threaded hole 10 is perpendicular to the rear support surface 11. A positioning screw is installed in the threaded hole 10. Specifically, the positioning screw can move along the vertical direction of the threaded hole 10, so that the clamping block can be fixed in size, avoiding interference between the clamping block and other parts of the cylinder 5 during final clamping, or even the inability to clamp the cylinder 5.

[0037] As a further implementation, a clamping block is provided on the positioning screw, and the clamping block and the positioning screw can rotate relative to each other, so as to facilitate clamping or loosening the cylinder 5.

[0038] As a further implementation, a T-shaped slider 7 is provided at the bottom of the front support 2, and a T-shaped slider 7 is also provided at the bottom of the rear support 3. The T-shaped slider 7 is used to cooperate with the positioning groove 4 to be fixedly installed on the worktable 1.

[0039] As a further implementation, the positioning groove 4 has a T-shaped cross-section, and a 0.05mm gap is provided between the positioning groove 4 and the T-shaped slider 7 to facilitate the movement of the T-shaped slider 7 in the positioning groove 4.

[0040] As a further implementation, the front support surface 9 of the front support 2 and the rear support surface 11 of the rear support 3 are both subjected to local heat treatment to prevent the cylinder body 5 from frequently contacting and causing wear on the support surfaces.

[0041] As a further implementation, the front positioning rod and the rotating shaft are connected by a thread. The diameter of the through hole 6 is larger than the diameter of the rotating shaft, and the difference is less than 2mm, which facilitates the smooth rotation of the rotating shaft. Since the rotating shaft and the front positioning rod are only used to press the cylinder 5 onto the front support 2, the difference in size only needs to be less than 2mm, which does not affect the positioning accuracy.

[0042] The tooling usage process is as follows:

[0043] First, the cylinder body 5 is initially positioned by placing it on the front support 2 and the rear support 3, so that the bottom surface of the cylinder body 5 is in contact with the front support surface 9 and the rear support surface 11. The cylinder body 5 is quickly positioned by utilizing the cross section between the rear support surface 11 and the top surface. At the same time, the cylindrical clearance at the connection between the bottom end of the cross section and the rear support surface 11 can prevent the corners of the cylinder body 5 from interfering with the rear support 3. The position of the cylinder body 5 is initially adjusted by the positioning screw and clamping block on the rear support 3 to ensure that the surface of the cylinder body 5 to be processed is at a set angle to the drill bit axis.

[0044] Secondly, by clamping with the front support 2, rotating the rotating shaft causes the front positioning rod to swing in the waist hole 8, gradually pressing the cylinder body 5. According to the shape and processing requirements of the cylinder body 5, the swing angle of the front positioning rod is adjusted to ensure that the cylinder body 5 is firmly clamped and will not deform due to excessive clamping force.

[0045] Finally, after the cylinder body 5 is initially positioned by clamping with the rear support 3, the clamping block is installed on the positioning screw, so that the clamping block and the positioning screw can rotate relative to each other. By rotating the positioning screw, the clamping block is moved downward, pressing the cylinder body 5 onto the rear support 3, further fixing the position of the cylinder body 5.

[0046] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A tooling suitable for machining oblique drain holes in cylinder blocks, characterized in that, include: The workbench is provided with multiple positioning grooves arranged in parallel; front and rear supports are slidably mounted on the positioning grooves and are located in different positioning grooves, for supporting and positioning the cylinder body. The front support has a front support surface on one side of its top, and the front support surface forms a set angle with the bottom surface of the front support. The front support also has a through hole on its side and a waist hole on the other side of its top. The waist hole communicates with the through hole. A rotating shaft is installed in the through hole and a front positioning rod is installed in the waist hole. The front positioning rod is mounted on the rotating shaft. When the rotating shaft rotates, the front positioning rod will swing in the waist hole, thereby pressing the cylinder body tightly. The rear support has a rear support surface on one side of its top, and the rear support surface is lower than the top surface of the rear support. The rear support surface and the bottom surface of the rear support form a set angle, which is used to make the surface to be machined on the cylinder body form a set angle with the axis of the drill bit.

2. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, There are two front supports, which are located in the same positioning groove; there are also two rear supports, which are located in the same positioning groove, and the front and rear supports are arranged opposite to each other.

3. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, A cross section is formed between the rear support surface and the top surface of the rear support. The cross section enables the cylinder to be quickly positioned and prevents it from sliding further. A cylindrical clearance is provided at the connection between the bottom end of the cross section and the rear support surface to prevent the corners of the cylinder from interfering with the rear support.

4. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, A threaded hole is provided on the top surface of the rear support, the axis of the threaded hole is perpendicular to the rear support surface, and a positioning screw is installed in the threaded hole.

5. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, A clamping block is provided on the positioning screw, and the clamping block and the positioning screw can rotate relative to each other, which facilitates clamping or loosening the cylinder.

6. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, The bottom of the front support is provided with a T-shaped slider, and the bottom of the rear support is also provided with a T-shaped slider. The T-shaped slider is used to cooperate with the positioning groove to fix the worktable.

7. The tooling for machining oblique drain holes in cylinder blocks as described in claim 6, characterized in that, The positioning groove has a T-shaped cross-section, and a 0.05mm gap is provided between the positioning groove and the T-shaped slider to facilitate the movement of the T-shaped slider in the positioning groove.

8. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, Both the front support surface of the front support and the rear support surface of the rear support undergo localized heat treatment to prevent wear caused by frequent contact with the cylinder block.

9. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, The front positioning rod is connected to the rotating shaft by a thread.

10. The tooling for machining oblique drain holes in cylinder blocks as described in claim 1, characterized in that, The diameter of the through hole is larger than the diameter of the rotating shaft, and the difference in size is less than 2 mm.

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