Positioning assembly for cylinder head machining

Abstract

The utility model provides a positioning assembly for machining of a cylinder head machine. The positioning assembly comprises a workbench; the positioning seat is fixed on the working table; the positioning panel is located on the positioning seat, a positioning hole is formed in the positioning panel, the positioning hole is a stepped hole, and the stepped hole comprises a large-diameter part and a small-diameter part; the cylinder sleeve positioning barrel is connected in the positioning hole and is supported by the small-diameter part of the positioning hole, a fixing structure for fixing the cylinder sleeve positioning barrel is arranged on the side surface of the positioning seat or the positioning panel, and the top surface of the cylinder sleeve positioning barrel is lower than or equal to the highest point of the positioning panel; and the cylinder head fastening structure is fixed on the working table.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder head machining, in particular to a positioning component for cylinder head machining. Background Art

[0002] In the manufacturing process of motorcycle engines, the engine cylinder head is a crucial component, and its internal holes, end faces and other parts need to be machined to ensure the performance and stability of the engine. During the machining process of the cylinder head, it is usually necessary to accurately position it on the processing equipment to ensure the processing accuracy and quality. For example, when the end face of the cylinder head needs to be ground, or when the cylinder liner of the cylinder head needs to be bored, the cylinder head needs to be positioned. At present, when positioning the cylinder head, different positioning seats are selected according to the different cylinder liners of the cylinder head, because different positioning seats have cylinder liner positioning holes of different sizes. This method is inconvenient when replacing the positioning seat, which is time-consuming and affects work efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a positioning assembly for cylinder head machining. The positioning assembly has a simple structure and can realize rapid positioning of the cylinder head. When facing cylinder heads of different models, it is only necessary to replace the cylinder sleeve positioning tube, which effectively saves replacement time and improves work efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solution: a positioning assembly for cylinder head machining, comprising:

[0005] A workbench;

[0006] A positioning seat, the positioning seat is fixed on the workbench;

[0007] A positioning panel, the positioning panel is on the positioning seat, a positioning hole is provided on the positioning panel, the positioning hole is a step hole, and the step hole includes a large diameter portion and a small diameter portion;

[0008] A cylinder sleeve positioning cylinder, the cylinder sleeve positioning cylinder is connected to the positioning hole and supported by the small diameter portion of the positioning hole, and a fixing structure for fixing the cylinder sleeve positioning cylinder is provided on the side of the positioning seat or the positioning panel, and the top surface of the cylinder sleeve positioning cylinder is lower than or equal to the highest point of the positioning panel;

[0009] A cylinder head fastening structure is fixed on the workbench.

[0010] Furthermore, the positioning hole is a through hole.

[0011] Furthermore, the positioning panel and the positioning seat are integrally formed.

[0012] Furthermore, the positioning panel is provided with a plurality of convex strips, and the convex strips are distributed on four sides of the positioning panel.

[0013] Furthermore, the cylinder sleeve positioning tube and the upper surface of the convex strip are flush with each other.

[0014] Furthermore, the fixing structure includes a threaded fastening hole opened on the side of the positioning seat or the positioning panel, and a clamping screw threadedly connected to the threaded fastening hole.

[0015] Furthermore, convex strips are also distributed around the cylinder sleeve positioning tube.

[0016] Furthermore, the height of the convex strip is 3-5 mm.

[0017] Furthermore, the cylinder head fastening structure is a side clamping structure or a surface clamping structure.

[0018] Furthermore, the positioning seat is fixed on the workbench through countersunk holes and screws.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. The positioning assembly has a simple structure and can realize the rapid positioning of the cylinder head. When facing different types of cylinder heads, it is only necessary to replace the cylinder sleeve positioning tube. The cylinder sleeve positioning hole is directly supported by the step hole and positioned by the fixed structure, which effectively saves replacement time and improves work efficiency.

[0021] 2. The positioning holes are set as through holes, which can facilitate the discharge of iron filings and coolant without the need for separate cleaning, further improving work efficiency and reducing downtime;

[0022] 3. The protrusions on the positioning panel can prevent iron filings from coming into contact with the bottom surface of the cylinder head even if there are iron filings on the panel, thereby preventing scratches on the bottom surface of the cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a structural diagram of another direction of the utility model;

[0025] Figure 3 This is a structural diagram of the utility model without connecting the cylinder sleeve positioning tube;

[0026] Figure 4 It is a cross-sectional structural diagram of the utility model;

[0027] Figure 5 This is a schematic diagram of the surface pressing structure adopted in the utility model;

[0028] Figure 6 This is a schematic diagram of the side clamping structure adopted in the utility model;

[0029] Figure 7 It is a structural diagram of the cylinder head of the utility model.

[0030] In the figure: 1, workbench; 2, workbench; 3, positioning seat; 4, positioning hole; 5, large diameter part; 6, small diameter part; 7, cylinder head; 8, cylinder sleeve positioning tube; 9, positioning panel; 10, convex strip; 11, threaded fastening hole; 12, clamping screw; 13, countersunk hole; 14, outer edge; 15, lever cylinder; 16, horizontal cylinder; 17, upper end surface; DETAILED DESCRIPTION

[0031] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figure 1-7 As shown, the embodiment of the utility model provides a positioning assembly for cylinder head machining, comprising:

[0033] A workbench 1; the workbench 1 is a workbench 1 of a machine tool, which can be a boring machine or a honing machine for processing the cylinder liner hole of the cylinder head 7, or can be a grinder for processing the end surface of the cylinder head 7;

[0034] A positioning seat 3, the positioning seat 3 is fixed on the workbench 1; the positioning seat 3 has an outer edge in the middle, and is fixed to the workbench 1 through the outer edge and screws. Correspondingly, a clearance hole for accommodating the positioning seat needs to be opened on the workbench 1 of the machine tool;

[0035] A positioning panel 9, wherein the positioning panel 9 is on the positioning seat. When the cylinder head 7 is positioned, the cylinder head 7 is in contact with the positioning panel 9. Since the positioning panel 9 is higher than the positioning seat, the coolant during processing will flow toward the surroundings of the positioning panel 9 and will not be deposited on the positioning panel 9. A positioning hole 4 is provided on the positioning panel 9. The positioning hole 4 is a step hole, and the step hole includes a large diameter portion 5 and a small diameter portion 6. The setting of the step hole enables a support ring to be provided between the large diameter portion 5 and the small diameter portion 6, which can be used to support other components;

[0036] A cylinder sleeve positioning tube 8 is used to position the cylinder sleeve of the cylinder head 7. The cylinder sleeve positioning tube 8 is connected to the positioning hole 4 and supported by the small diameter portion 6 of the positioning hole 4. Specifically, it is located on the support ring. A fixing structure for fixing the cylinder sleeve positioning tube 8 is provided on the side of the positioning seat or the positioning panel 9. The fixing structure enables the cylinder sleeve positioning tube 8 to be firmly connected to the positioning hole 4 and will not fall out due to vibration or other reasons. The top surface of the cylinder sleeve positioning tube 8 is lower than or equal to the highest point of the positioning panel 9. In this way, the lower end surface of the cylinder head 7 can be directly supported by the positioning panel 9, making it more stable during processing;

[0037] A cylinder head 7 fastening structure, the cylinder head 7 fastening structure is fixed on the workbench 1. The cylinder head 7 fastening structure is a component used to fasten the cylinder head 7, and it can adopt different structures according to the parts processed by the cylinder head 7, so as to fasten different positions of the cylinder head 7.

[0038] The process of the utility model during use is as follows. When it is necessary to position the cylinder head 7, the cylinder liner area protruding from the lower end surface of the cylinder head 7 is first positioned. Specifically, the protruding cylinder liner area is inserted into the cylinder liner positioning tube 8, so that the positioning of the cylinder head 7 can be completed in the circumferential direction. At the same time, the lower surface support of the cylinder head 7 is connected to the positioning panel 9. Since the inner hole of the cylinder liner or the upper end surface 17 of the cylinder liner is processed, the cylinder head 7 only needs to be roughly positioned in the axial and longitudinal directions. For example, the upper end surface 17 of the cylinder head 7 is pressed by a lever cylinder to facilitate the processing of the cylinder liner. For example, the two sides of the cylinder head 7 are pressed by two horizontal cylinders to facilitate the processing of the upper end surface 17. During processing, since the positioning panel 9 is raised, the cutting fluid will not be deposited on the positioning panel 9. At the same time, the lower end surface of the cylinder head 7 is in contact with the positioning panel 9, and the support is more stable, and there will be no shaking during processing.

[0039] Furthermore, the positioning hole 4 is a through hole. The positioning hole 4 of the utility model is a through hole, so that the iron chips and cutting fluid generated by machining can leak out from the through hole and be discharged from the chip removal channel on the workbench 1. In this way, there is no need to clean the positioning hole 4 frequently.

[0040] Furthermore, the positioning panel 9 and the positioning seat are integrally formed. Since the positioning panel 9 and the positioning seat are integrally formed, the positioning panel 9 can be directly milled out during production without the need to provide other connecting components.

[0041] Furthermore, the positioning panel 9 is provided with a plurality of convex strips 10, which are distributed on the four sides of the positioning panel 9. The convex strips 10 are small in area, and the probability of iron filings adhering is greatly reduced. Even if there are iron filings, the operator can quickly clean them. By providing the convex strips 10 on the positioning panel 9, the cylinder head 7 can be positioned with a certain gap from the lowest plane of the positioning panel 9. In this way, even if there are iron filings on the lowest plane of the positioning panel 9, the lower end surface of the cylinder head 7 will not be scratched.

[0042] Furthermore, the upper surfaces of the cylinder sleeve positioning sleeve 8 and the convex strip 10 are flush. Since the upper end surface of the cylinder sleeve positioning sleeve 8 is flush with the upper surface of the convex strip 10, the upper end surface of the cylinder sleeve positioning sleeve can also play a role in supporting the cylinder head 7, further enhancing the stability of the positioning of the cylinder head 7.

[0043] Furthermore, the fixing structure includes a threaded fastening hole 11 opened on the side of the positioning seat or the positioning panel 9, and a clamping screw 12 threadedly connected in the threaded fastening hole 11. The utility model opens the threaded fastening hole 11 on the side of the positioning seat, and the threaded fastening hole 11 is connected to the positioning hole 4, so after the clamping screw 12 is connected therein, the cylinder sleeve can be compressed from the side, so that it will not fall out of the positioning hole 4 under vibration conditions.

[0044] Furthermore, convex strips 10 are also distributed around the cylinder sleeve positioning tube 8. The arrangement of the convex strips 10 enables the cylinder head 7 to obtain more support and be more stable during processing.

[0045] Furthermore, the height of the convex strip 10 is 3-5 mm. Specifically, the height of the convex strip 10 should not be set too high, as it will waste materials. The height of the convex strip 10 should be just enough to accommodate the iron filings.

[0046] Furthermore, the cylinder head 7 fastening structure is a side clamping structure or a surface clamping structure. Figure 6 As shown, if the upper end surface of the cylinder head 7 needs to be milled, the two sides of the cylinder head 7 are pressed, such as a horizontal cylinder, as shown in FIG. Figure 7 As shown, if the inner hole of the cylinder sleeve of the cylinder head 7 needs to be processed, a surface clamping mechanism, such as a lever cylinder, is used.

[0047] Furthermore, the positioning seat is fixed on the workbench 1 through the countersunk hole 13 and the screw. The countersunk hole 13 structure can make the top of the screw not higher than the countersunk hole 13, avoiding the cylinder head 7 from accidentally touching and causing bumps.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A positioning assembly for cylinder head machining, characterized in that: include: A workbench; A positioning seat, the positioning seat is fixed on the workbench; A positioning panel, the positioning panel is on the positioning seat, a positioning hole is provided on the positioning panel, the positioning hole is a step hole, and the step hole includes a large diameter portion and a small diameter portion; A cylinder sleeve positioning cylinder, the cylinder sleeve positioning cylinder is connected to the positioning hole and supported by the small diameter portion of the positioning hole, and a fixing structure for fixing the cylinder sleeve positioning cylinder is provided on the side of the positioning seat or the positioning panel, and the top surface of the cylinder sleeve positioning cylinder is lower than or equal to the highest point of the positioning panel; A cylinder head fastening structure is fixed on the workbench.

2. A positioning assembly for cylinder head machining according to claim 1, characterized in that: The positioning hole is a through hole.

3. A positioning assembly for cylinder head machining according to claim 2, characterized in that: The positioning panel and the positioning seat are integrally formed.

4. A positioning assembly for cylinder head machining according to claim 3, characterized in that: The positioning panel is also provided with a plurality of convex strips, and the convex strips are distributed on the four sides of the positioning panel.

5. A positioning assembly for cylinder head machining according to claim 4, characterized in that: The cylinder sleeve positioning tube is flush with the upper surface of the convex strip.

6. A positioning assembly for cylinder head machining according to claim 5, characterized in that: The fixing structure includes a threaded fastening hole opened on the side of the positioning seat or the positioning panel, and a clamping screw threadedly connected in the threaded fastening hole.

7. A positioning assembly for cylinder head machining according to claim 6, characterized in that: The cylinder sleeve positioning tube is also provided with convex strips around it.

8. A positioning assembly for cylinder head machining according to claim 7, characterized in that: The height of the convex strip is 3-5 mm.

9. A positioning assembly for cylinder head machining according to claim 8, characterized in that: The cylinder head fastening structure is a side pressing structure or a surface pressing structure.

10. A positioning assembly for cylinder head machining according to claim 9, characterized in that: The positioning seat is fixed on the workbench through countersunk holes and screws.

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