Integrated auxiliary machining tool for diesel engine cylinder cover hole series

Abstract

The utility model provides a diesel engine cylinder cover hole system integration auxiliary machining tool which comprises a tool body, a first positioning boss is machined in the center of the top face of the tool body, and a second positioning boss is machined in the center of the first positioning boss. A plurality of first screw rod mounting holes are uniformly formed in the top of the second positioning boss in a circumferential manner; different series of first stepped holes and second stepped holes which are uniformly distributed are formed in the top of the tool body and located on the periphery of the first positioning boss; a groove arranged in the radial direction is machined in the top of the tool body, and the groove penetrates through partial areas of the first positioning boss and the second positioning boss. The tool can be used for positioning and supporting the diesel engine cylinder cover on a numerical control boring C shaft, so that all hole series of the cylinder cover can be conveniently and quickly machined, and the tool is easy to operate, stable and reliable; and the repeated positioning precision is ensured through the auxiliary machining tool.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine cylinder head processing, in particular to a diesel engine cylinder head hole system integrated auxiliary processing tool. Background Art

[0002] See also Figure 1 , 2 A diesel engine cylinder head is provided with holes of different angles and types at different positions of the diesel engine cylinder head, including a starter valve hole, an oiler hole, and a cross water hole. In order to realize the processing of these holes, the traditional processing method of processing the cylinder head hole system requires the cooperation of multiple boring and milling machines. The processing of some hole systems using traditional machine tools is very cumbersome and inefficient, and repeated positioning is required during the processing, resulting in the inability to guarantee the processing accuracy of the hole system. Utility Model Content

[0003] The purpose of the utility model is to provide an integrated auxiliary processing tool for a diesel engine cylinder head hole system in view of the above-mentioned problem. This tool can be used to realize the positioning and support of the diesel engine cylinder head on the C-axis of a numerically controlled boring machine, thereby realizing the processing of all hole systems of the cylinder head conveniently and quickly, being easy to operate, stable and reliable; and through this auxiliary processing tool, the repeated positioning accuracy is guaranteed, the processing accuracy and quality in multiple clamping processes are guaranteed, and the processing process is simplified.

[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is realized as follows: a diesel engine cylinder head hole system integrated auxiliary processing tool, including a tool body, a first positioning boss is processed at the center of the top surface of the tool body, a second positioning boss is processed at the center of the first positioning boss, and a plurality of first screw mounting holes are processed uniformly on the top of the second positioning boss in a circular shape; different series of first step holes and second step holes are arranged uniformly on the top of the tool body and on the periphery of the first positioning boss; radially arranged grooves are processed on the top of the tool body, and the grooves pass through partial areas of the first positioning boss and the second positioning boss.

[0005] The outer diameter A of the first positioning boss is equal to the inner diameter of the small end inner hole of the diesel engine cylinder head to be processed.

[0006] The outer diameter B of the second positioning boss is equal to the inner diameter of the large end inner hole of the diesel engine cylinder head to be processed.

[0007] The first stepped holes and the second stepped holes are distributed at different diameters.

[0008] A bottom positioning boss is processed at the center of the bottom surface of the tool body.

[0009] The top of the groove is symmetrically provided with stepped surfaces on both sides, and the position where the stepped surfaces are located is processed with a hanging ring installation hole.

[0010] Also included is a support block for being installed inside the first stepped hole or the second stepped hole.

[0011] A center hole is processed at the center of the support block, and a connecting column is arranged at the bottom end of the support block. The connecting column is fixedly connected to the corresponding first stepped hole or the second stepped hole.

[0012] The processing also includes a first double-ended long screw and a second double-ended long screw for locking and fixing the diesel engine cylinder head, wherein the ends of the first double-ended long screw and the second double-ended long screw are pressed against the diesel engine cylinder head through a locking nut;

[0013] The tool body is processed with a countersunk hole for being fixedly connected with the C-axis of the numerical control boring machine by bolts.

[0014] A method for machining a diesel engine cylinder head hole system, the method being implemented by using the integrated auxiliary machining tool, comprising the following steps:

[0015] Step 1: Fix the tooling body:

[0016] Fix the tooling body on the C-axis of the CNC boring machine by bolts;

[0017] Step 2: Fix the support block:

[0018] A support block is fixedly installed inside the first stepped hole or the second stepped hole of the tool body;

[0019] Step 3: One-time positioning and installation of the diesel engine cylinder head:

[0020] Match the inner hole of the small end of the diesel engine cylinder head with the second positioning boss of the tooling body, and adjust the installation angle of the diesel engine cylinder head, then pass the first double-headed long screw or the second double-headed long screw through the reserved hole on the diesel engine cylinder head, and lock and fix the diesel engine cylinder head on the outer end surface of the tooling body with the locking nut;

[0021] Step 4: Processing the first start valve hole and the first water hole:

[0022] Taking the inner hole of the small end as the positioning reference and cooperating with the tooling body, the C-axis and B-axis of the CNC boring machine are linked to process the first start valve hole and the first water hole;

[0023] Step 5: Disassembly of diesel engine cylinder head:

[0024] Remove the locking nut and remove the diesel engine cylinder head from the tooling body;

[0025] Step 6: Secondary positioning and installation of diesel engine cylinder head:

[0026] Replace the surface of the diesel engine cylinder head, match the large end inner hole of the diesel engine cylinder head with the second positioning boss of the tooling body, then reinstall the locking nut and reposition and install the diesel engine cylinder head;

[0027] Step 7: Processing of the first and second oiler holes:

[0028] Taking the inner hole of the large end as the positioning reference and cooperating with the tooling body, the C-axis and B-axis of the CNC boring machine are linked to process the first oiler hole and the second oiler hole;

[0029] Step 8: Processing of the second start-up valve hole and the second water hole:

[0030] Taking the inner hole of the large end as the positioning reference and cooperating with the tooling body, the C-axis and B-axis of the CNC boring machine are linked to process the second start-up valve hole and the second water hole, and ensure that the second start-up valve hole is connected to the first start-up valve hole, and the second water hole is connected to the first water hole;

[0031] Step 9: Disassembly of the diesel engine cylinder head and tooling body:

[0032] After all the hole systems on the diesel engine cylinder head are processed, the diesel engine cylinder head is disassembled from the tooling body, and then the tooling body is disassembled from the CNC boring machine.

[0033] The utility model has the following beneficial effects:

[0034] 1. This tooling can be used to realize the positioning and support of the diesel engine cylinder head on the C-axis of the CNC boring machine, so as to realize the processing of all the hole systems of the cylinder head conveniently and quickly. It is easy to operate, stable and reliable. Moreover, this auxiliary processing tooling ensures the repeated positioning accuracy, ensures the processing accuracy and quality in multiple clamping processes, and simplifies the processing process.

[0035] 2. Through the above-mentioned aperture matching, the center positioning of the small end inner hole of the diesel engine cylinder head is ensured by the first positioning boss, thereby ensuring its positioning accuracy, so as to ensure the subsequent processing positioning accuracy of the first starting valve hole and the first water hole.

[0036] 3. Through the above-mentioned aperture matching, the center positioning of the large end inner hole of the diesel engine cylinder head is ensured by the second positioning boss, thereby ensuring its positioning accuracy, so as to ensure the subsequent processing positioning accuracy of the first oiler hole, the second oiler hole, the second starter valve hole and the second water hole.

[0037] 4. The lifting ring installation hole mentioned above facilitates the installation of the lifting ring, thereby facilitating the subsequent installation and disassembly of the tooling body.

[0038] 5. The above-mentioned support block can be used to support the end face of the diesel engine cylinder head, thereby ensuring the reliability of the fixation of the diesel engine cylinder head during the processing when positioning the inner hole of the small end. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0040] Figure 1 This is a front view of the diesel engine cylinder head to be processed according to the utility model from a first perspective.

[0041] Figure 2 This is a front view of the diesel engine cylinder head to be processed from a second perspective of the utility model.

[0042] Figure 3 It is the front view of the tooling body of the utility model.

[0043] Figure 4 For this utility model Figure 3 AA view of the tooling body.

[0044] Figure 5 This is a state diagram of the utility model during one-time positioning and installation of a diesel engine cylinder head.

[0045] Figure 6 This is a state diagram of the utility model during secondary positioning and installation of a diesel engine cylinder head.

[0046] Figure 7 This is a state diagram of the utility model when processing the second water hole and the first water hole.

[0047] In the figure: tooling body 1, second stepped hole 2, first stepped hole 3, first positioning boss 4, second positioning boss 5, first screw mounting hole 6, groove 7, lifting ring mounting hole 8, stepped surface 9, bottom positioning boss 10, small end inner hole 11, first starting valve hole 12, diesel engine cylinder head 13, first water hole 14, large end inner hole 15, second oiler hole 16, first oiler hole 17, support block 18, first double-headed long screw 19, second double-headed long screw 20, connecting column 21, center hole 22, second starting valve hole 23, second water hole 24, countersunk hole 25. DETAILED DESCRIPTION

[0048] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0049] See also Figure 1-7, a diesel engine cylinder head hole system integrated auxiliary processing tool, comprising a tool body 1, a first positioning boss 4 is processed at the center of the top surface of the tool body 1, a second positioning boss 5 is processed at the center of the first positioning boss 4, and a plurality of first screw mounting holes 6 are processed uniformly on the top of the second positioning boss 5 in a circumferential manner; different series of first stepped holes 3 and second stepped holes 2 are arranged uniformly on the top of the tool body 1 and located on the periphery of the first positioning boss 4; radially arranged grooves 7 are processed on the top of the tool body 1, and the grooves 7 pass through part of the first positioning boss 4 and the second positioning boss 5. This tool can be used to realize the positioning and support of the diesel engine cylinder head on the C-axis of the CNC boring machine, and then realize the processing of all the hole systems of the cylinder head conveniently and quickly, which is easy to operate, stable and reliable; and through this auxiliary processing tool, the repeated positioning accuracy is guaranteed, the processing accuracy and quality in multiple clamping processes are guaranteed, and the processing process is simplified. By adopting the tool body 1, the inner holes of different end faces of the diesel engine cylinder head can be repeatedly positioned to ensure the repeated positioning accuracy of the hole system processing.

[0050] Furthermore, the outer diameter A of the first positioning boss 4 is equal to the inner diameter of the small end inner hole 11 of the diesel engine cylinder head 13 to be processed. Through the above-mentioned aperture matching, it is ensured that the center positioning of the small end inner hole 11 of the diesel engine cylinder head 13 is achieved through the first positioning boss 4, thereby ensuring its positioning accuracy, so as to ensure the subsequent processing positioning accuracy of the first start valve hole 12 and the first water hole 14.

[0051] Furthermore, the outer diameter B of the second positioning boss 5 is equal to the inner diameter of the large end inner hole 15 of the diesel engine cylinder head 13 to be processed. Through the above-mentioned aperture matching, it is ensured that the center positioning of the large end inner hole 15 of the diesel engine cylinder head 13 is achieved through the second positioning boss 5, and then its positioning accuracy is guaranteed, so as to ensure the subsequent processing positioning accuracy of the first oil injector hole 17, the second oil injector hole 16, the second starter valve hole 23 and the second water hole 24.

[0052] Furthermore, the first stepped hole 3 and the second stepped hole 2 are distributed in different diameters. By adopting the distribution mode of different diameters, it can well adapt to the diesel engine cylinder head 13 of different sizes and models, and ensure that it can well match the hole position on the diesel engine cylinder head 13.

[0053] Furthermore, a bottom positioning boss 10 is processed at the center of the bottom surface of the tool body 1. The bottom positioning boss 10 ensures the center positioning of the tool body 1 and the C-axis of the CNC boring machine during positioning and installation, thereby ensuring the positioning and installation accuracy.

[0054] Furthermore, the top of the groove 7 is symmetrically provided with stepped surfaces 9 on both sides, and the portion where the stepped surfaces 9 are located is processed with a lifting ring mounting hole 8. The lifting ring mounting hole 8 is convenient for installing the lifting ring, thereby facilitating the subsequent installation and removal of the tooling body 1.

[0055] Furthermore, it also includes a support block 18 for installation inside the first stepped hole 3 or the second stepped hole 2. The support block 18 can be used to support the end surface of the diesel engine cylinder head 13, thereby ensuring the reliability of the fixing of the diesel engine cylinder head 13 during the processing when the small end inner hole 11 is positioned.

[0056] Furthermore, a center hole 22 is processed at the center of the support block 18, and a connecting column 21 is provided at the bottom end of the support block 18, and the connecting column 21 is fixedly connected to the corresponding first stepped hole 3 or second stepped hole 2. The support block 18 is convenient for installation and removal, and the support block 18 needs to be removed when the inner hole 15 of the large end is being removed.

[0057] Furthermore, during the processing, a first double-headed long screw 19 and a second double-headed long screw 20 are also included for locking and fixing the diesel engine cylinder head 13. The ends of the first double-headed long screw 19 and the second double-headed long screw 20 are pressed against the diesel engine cylinder head 13 through locking nuts. The first double-headed long screw 19 and the second double-headed long screw 20 can be used to reliably lock and fix the diesel engine cylinder head 13 to the end face of the tooling body 1.

[0058] Furthermore, a countersunk hole 25 for being fixedly connected to the CNC boring C-axis by bolts is processed on the tool body 1. Through the countersunk hole 25, it is convenient to fix the tool body 1 with the CNC boring C-axis by bolts.

[0059] Embodiment 2:

[0060] A method for machining a diesel engine cylinder head hole system, the method being implemented by using the integrated auxiliary machining tool, comprising the following steps:

[0061] Step 1: Fixing the tool body 1:

[0062] The tool body 1 is fixedly mounted on the C-axis of the CNC boring machine by means of bolts;

[0063] Step 2: Fixing of the support block 18:

[0064] A support block 18 is fixedly installed inside the first stepped hole 3 or the second stepped hole 2 of the tool body 1;

[0065] Step 3: One-step positioning and installation of the diesel engine cylinder head 13:

[0066] Match the small end inner hole 11 of the diesel engine cylinder head 13 with the second positioning boss 5 of the tooling body 1, and adjust the installation angle of the diesel engine cylinder head 13, then pass the first double-headed long screw 19 or the second double-headed long screw 20 through the reserved hole on the diesel engine cylinder head 13, and lock and fix the diesel engine cylinder head 13 to the outer end surface of the tooling body 1 with the locking nut;

[0067] Step 4: Processing the first start-up valve hole 12 and the first water hole 14:

[0068] Taking the inner hole 11 of the small end as the positioning reference and cooperating with the tooling body 1, the C-axis and B-axis of the CNC boring machine are linked to process the first start valve hole 12 and the first water hole 14;

[0069] Step 5, disassembly of diesel engine cylinder head 13:

[0070] Remove the locking nut and remove the diesel engine cylinder head 13 from the tooling body 1;

[0071] Step 6: Secondary positioning and installation of the diesel engine cylinder head 13:

[0072] Resurface the diesel engine cylinder head 13, and match the large end inner hole 15 of the diesel engine cylinder head 13 with the second positioning boss 5 of the tooling body 1, then reinstall the locking nut to reposition and install the diesel engine cylinder head 13;

[0073] Step 7: Processing of the first oiler hole 17 and the second oiler hole 16:

[0074] Taking the inner hole 15 of the large end as the positioning reference and cooperating with the tooling body 1, the C-axis and B-axis of the CNC boring machine are linked to process the first oiler hole 17 and the second oiler hole 16;

[0075] Step 8: Processing of the second start-up valve hole 23 and the second water hole 24:

[0076] Taking the inner hole 15 of the large end as the positioning reference, in cooperation with the tooling body 1, the C-axis and the B-axis of the CNC boring machine are linked to process the second start-up valve hole 23 and the second water hole 24, and ensure that the second start-up valve hole 23 is connected to the first start-up valve hole 12, and the second water hole 24 is connected to the first water hole 14;

[0077] Step 9: Disassembly of the diesel engine cylinder head 13 and the tooling body 1:

[0078] After all the hole systems on the diesel engine cylinder head 13 are processed, the diesel engine cylinder head 13 is disassembled from the tool body 1, and then the tool body 1 is disassembled from the CNC boring machine.

Claims

1. A diesel engine cylinder head hole system integrated auxiliary processing tool, characterized in that: The tool body (1) comprises a first positioning boss (4) processed at the center of the top surface of the tool body (1), a second positioning boss (5) processed at the center of the first positioning boss (4), and a plurality of first screw mounting holes (6) processed uniformly in a circumferential manner at the top of the second positioning boss (5); different series of first stepped holes (3) and second stepped holes (2) are arranged uniformly at the top of the tool body (1) and on the periphery of the first positioning boss (4); radially arranged grooves (7) are processed at the top of the tool body (1), and the grooves (7) penetrate partial areas of the first positioning boss (4) and the second positioning boss (5).

2. According to claim 1, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: The outer diameter A of the first positioning boss (4) is equal to the inner diameter of the small end inner hole (11) of the diesel engine cylinder head (13) to be processed.

3. According to claim 1, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: The outer diameter B of the second positioning boss (5) is equal to the inner diameter of the large end inner hole (15) of the diesel engine cylinder head (13) to be processed.

4. According to claim 1, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: The first stepped holes (3) and the second stepped holes (2) are distributed at different diameters.

5. According to claim 1, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: A bottom positioning boss (10) is machined at the center of the bottom surface of the tool body (1).

6. According to claim 1, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: The top of the groove (7) is symmetrically provided with stepped surfaces (9) on both sides, and the portion where the stepped surfaces (9) are located is processed with a lifting ring mounting hole (8).

7. According to claim 1, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: It also includes a support block (18) for being installed inside the first stepped hole (3) or the second stepped hole (2).

8. According to claim 7, a diesel engine cylinder head hole system integrated auxiliary processing tool is characterized in that: A center hole (22) is machined at the center of the support block (18), and a connecting column (21) is provided at the bottom end of the support block (18), wherein the connecting column (21) is fixedly connected to the corresponding first stepped hole (3) or the second stepped hole (2).

9. The diesel engine cylinder head hole system integrated auxiliary processing tool according to claim 8, characterized in that: The processing also includes a first double-ended long screw (19) and a second double-ended long screw (20) for locking and fixing the diesel engine cylinder head (13), wherein the ends of the first double-ended long screw (19) and the second double-ended long screw (20) are pressed against the diesel engine cylinder head (13) via locking nuts.

10. The diesel engine cylinder head hole system integrated auxiliary processing tool according to claim 8, characterized in that: The tool body (1) is machined with a countersunk hole (25) for being fixedly connected to the CNC boring C axis by means of bolts.

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