Turbocharger bearing seat machining method and clamping tool thereof

Abstract

The invention relates to the field of machining, in particular to a machining method for a bearing seat of a turbocharger and a clamping tool of the bearing seat. Comprising a bearing seat drilling jig, a bearing seat drilling tool and a bearing seat turning tool. The process route is reasonably arranged, the kidney-shaped groove and the hole are machined after rough machining, and the situation that the hole and the groove are machined firstly, and deformation occurs after finish machining is avoided; meanwhile, a reasonable turning tool is designed, clamping deformation is avoided, and the important size and the geometric tolerance requirement of the important size are guaranteed through one-time clamping; a reasonable drilling tool is designed, pin holes in the circumference are machined in a numerical control machining center at a time, the size and position requirements of the pin holes are met, and finally parts meeting the drawing requirements are machined, so that the problems that according to an existing turbocharger bearing seat machining method in the prior art, due to the fact that the parts are copper parts, the local wall thickness is too small, and the machining cost is low are solved. And clamping deformation is easily caused.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and in particular to a method for processing a bearing seat of a turbocharger and a clamping tool thereof. Background Art

[0002] A turbocharger is an air compressor driven by the exhaust gas generated by the operation of an internal combustion engine. A marine turbocharger is one type of turbocharger. As a supporting component for diesel engines, the marine turbocharger is a turbocharger product independently developed by the company. The bearing seat, as a component of this model product, plays a key role. As a supporting component for the bearing, the bearing seat has high requirements for dimensional accuracy and form and position tolerances. Its processing and manufacturing accuracy directly affects the overall performance of the turbocharger.

[0003] However, the existing method for processing the bearing seat of the turbocharger has the problem that the part is made of copper and the local wall thickness is thin, which makes it easy to deform during clamping. Summary of the invention

[0004] The purpose of the present invention is to provide a turbocharger bearing seat processing method and a clamping tool thereof, aiming to solve the technical problem that the existing turbocharger bearing seat processing method in the prior art has the problem that the parts are copper parts, the local wall thickness is thin, and they are easy to be deformed during clamping.

[0005] To achieve the above-mentioned purpose, the present invention adopts a turbocharger bearing seat processing and clamping tool, including a bearing seat drilling jig, a bearing seat drilling tool and a bearing seat turning tool;

[0006] The bearing seat drilling jig is used to clamp the bearing seat of the turbocharger, to process the holes on the end face and to mill the waist-shaped groove;

[0007] The bearing seat drilling tool is used to clamp the bearing seat of the turbocharger to process the pin holes and waist-shaped grooves on the circumference;

[0008] The bearing seat turning tool is used to clamp the bearing seat of the turbocharger to process the large end face and outer circle, the small end face and outer circle.

[0009] Among them, the bearing seat drilling jig includes a fixed mold body, a movable mold body, a first screw and a positioning pin, one end of the first screw passes through the movable mold body and is tightened on the fixed mold body, the positioning pin is arranged on the movable mold body, and a drill sleeve is arranged on the fixed mold body.

[0010] Wherein, the bearing seat drilling jig also includes a washer, and the washer is sleeved on the first screw and contacts with the movable mold body.

[0011] Wherein, the number of the drill sleeves is multiple.

[0012] Among them, the bearing seat drilling tool includes a main body, a pin, a second screw and a first pressure plate. The main body is positioned by the outer circle and end face of the large end of the part and is positioned by the pin. The second screw is connected to the first pressure plate.

[0013] Wherein, the bearing seat turning tool comprises a main body, a screw, a second pressure plate and a clamping assembly, wherein the clamping assembly is arranged on the main body, and the screw cooperates with the second pressure plate to press on the small end face to clamp the part.

[0014] Wherein, the bearing seat turning tool also includes a protective member, and the protective member is arranged on the clamping assembly.

[0015] The present invention also provides a method for machining a turbocharger bearing seat, which is applied to the turbocharger bearing seat machining clamping tool as described above.

[0016] The steps include:

[0017] First, the workpiece is heat treated;

[0018] Rough turning the heat-treated workpiece to remove excess stock;

[0019] Then, the center cross line and waist-shaped groove position line are drawn on the workpiece after removing the excess allowance;

[0020] Use processing equipment to align and mark the holes and waist-shaped grooves on the end surface;

[0021] The bearing seat drilling tool is used to fix the workpiece after the holes and waist-shaped grooves on the end surface are processed, and the pin holes and waist-shaped grooves on the circumference are processed;

[0022] The bearing seat drilling jig is used to fix the workpiece on which the pin holes and waist-shaped grooves on the processing circumference are completed, and countersinking is performed;

[0023] The workpiece after countersinking is fixed by the bearing seat turning tool, and then the large end face and outer circle, the small end face and outer circle are processed;

[0024] Finally, the finished workpiece is deburred to obtain the bearing seat of the turbocharger.

[0025] The present invention provides a method for processing a bearing seat of a turbocharger and a clamping tool thereof. The present invention arranges the process route reasonably, processes waist-shaped grooves and holes after rough machining, avoids machining the holes and grooves first and causing deformation after fine machining; designs a reasonable lathe tool to avoid deformation during clamping, and ensures important dimensions and shape and position tolerance requirements during one clamping; designs a reasonable drilling tool to process pin holes on a circle on a CNC machining center at one time to ensure the dimensions and position requirements, and finally processes parts that meet the requirements of the drawings, thereby solving the technical problem in the prior art of the existing method for processing the bearing seat of a turbocharger, which is that the parts are copper parts with thin local wall thickness and are easy to be deformed during clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the bearing seat drilling jig of the present invention.

[0028] Figure 2 It is a partial structural schematic diagram of the bearing seat drilling jig of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the bearing seat drilling tool of the present invention.

[0030] Figure 4 It is a structural schematic diagram of the bearing seat turning tool of the present invention.

[0031] Figure 5 It is a schematic diagram of rough turning a big end and a hole in a method for machining a bearing seat of a turbocharger according to the present invention.

[0032] Figure 6 It is a schematic diagram of rough turning the outer circle and inner hole of the small end in the method for machining the bearing seat of the turbocharger of the present invention.

[0033] Figure 7 It is a schematic diagram of fine turning of a large end face and an inner hole in a method for machining a bearing seat of a turbocharger according to the present invention.

[0034] Figure 8 It is a schematic diagram of the dimensions of the outer circle, A and B references and the inner hole end face of the large end in the processing method of the turbocharger bearing seat of the present invention.

[0035] Fig. 9 It is a schematic diagram of processing the bearing seat of the turbocharger of the present invention.

[0036] In the figure: 1-fixed mold body, 2-movable mold body, 3-first screw, 4-locating pin, 5-washer, 6-drill sleeve, 7-main body, 8-pin, 9-second screw, 10-first pressure plate, 11-main body, 12-screw, 13-second pressure plate, 14-clamping assembly, 15-protective member. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0038] See also Figure 1 to Figure 4 ,in Figure 1 It is a structural schematic diagram of the bearing seat drilling jig of the present invention, Figure 2 It is a partial structural schematic diagram of the bearing seat drilling jig of the present invention, Figure 3 is a structural schematic diagram of the bearing seat drilling tool of the present invention, Figure 4 It is a structural schematic diagram of the bearing seat turning tool of the present invention

[0039] The present invention provides a bearing seat processing and clamping tool for a turbocharger, including a bearing seat drilling jig, a bearing seat drilling tool and a bearing seat turning tool;

[0040] The bearing seat drilling jig is used to clamp the bearing seat of the turbocharger, to process the holes on the end face and to mill the waist-shaped groove;

[0041] The bearing seat drilling tool is used to clamp the bearing seat of the turbocharger to process the pin holes and waist-shaped grooves on the circumference;

[0042] The bearing seat turning tool is used to clamp the bearing seat of the turbocharger to process the large end face and outer circle, the small end face and outer circle.

[0043] With respect to this specific implementation mode, the present invention arranges the process route reasonably, processes waist-shaped grooves and holes after rough machining, avoids machining holes and grooves first, and deformation occurs after fine machining; designs reasonable lathe tooling at the same time to avoid deformation due to clamping, and ensures important dimensions and their shape and position tolerance requirements during one clamping; designs reasonable drilling tooling to machine circular pin holes on a CNC machining center at one time to ensure their size and position requirements, and finally processes parts that meet the requirements of the drawings, thereby solving the technical problem that the existing turbocharger bearing seat processing method in the prior art is that the parts are copper parts, the local wall thickness is thin, and they are easy to be deformed during clamping.

[0044] The bearing seat drilling jig comprises a fixed die body 1, a movable die body 2, a first screw 3 and a positioning pin 4, one end of the first screw 3 passes through the movable die body 2 and is tightened on the fixed die body 1, the positioning pin 4 is arranged on the movable die body 2, and a drill sleeve 6 is arranged on the fixed die body 1;

[0045] The bearing seat drilling jig further includes a washer 5, which is sleeved on the first screw 3 and contacts the movable die body 2;

[0046] Wherein, the number of the drill sleeves 6 is multiple;

[0047] The fixed mold body 1 and the movable mold body 2 are connected together by the first screw 3 and the locating pin 4, and the parts are pressed at the same time. The position is fixed by the locating pin 4 before pressing. Due to the reduced stability of the drilling machine spindle, in this process scheme, the holes on the large end face are processed by the GM100 CNC milling machine, and several pin holes on the circumference are completed on the VCN535 CNC milling machining center.

[0048] Secondly, the bearing seat drilling tool comprises a main body 7, a pin 8, a second screw 9 and a first pressing plate 10. The main body 7 is positioned by the outer circle and end face of the large end of the part and is positioned by the pin 8. The second screw 9 is connected to the first pressing plate 10.

[0049] The main body 7 is positioned by the outer circle and end face of the large end of the part, and is positioned by the pin 8, and the part is pressed by the cooperation of the second screw 9 and the first pressing plate 10.

[0050] Meanwhile, the bearing seat turning tool comprises a body 11, a screw 12, a second pressing plate 13 and a clamping assembly 14. The clamping assembly 14 is arranged on the body 11. The screw 12 cooperates with the second pressing plate 13 to press the part on the small end surface;

[0051] The bearing seat turning tool further comprises a protective member 15, and the protective member 15 is arranged on the clamping assembly 14;

[0052] When turning the end face and outer circle of the large end, the screw 12 is used to press the second pressing plate 13 onto the small end face to press the part; when turning the outer circle and end face of the small end, the pressing assembly 14 is used to press the part, and the function of the protective member 15 is to prevent the parts from being crushed.

[0053] A turbocharger bearing seat processing and clamping tool is used in the present embodiment. The present invention arranges the process route reasonably, processes waist-shaped grooves and holes after rough processing, avoids processing the holes and grooves first, and then deformation occurs after fine processing; at the same time, a reasonable lathe tool is designed to avoid clamping deformation, and one-time clamping guarantees the requirements of important dimensions and their shape and position tolerances; a reasonable drilling tool is designed to process the circumferential pin holes on the CNC machining center at one time, and ensure their size and position requirements, and finally process parts that meet the requirements of the drawings, thereby solving the technical problem that the existing turbocharger bearing seat processing method in the prior art is that the parts are copper parts, the local wall thickness is thin, and they are easy to be clamped and deformed.

[0054] See also Figures 5 to 9 , Figure 5 It is a schematic diagram of rough turning the big end and the hole in the method for machining the bearing seat of the turbocharger of the present invention, Figure 6 It is a schematic diagram of rough turning the outer circle and inner hole of the small end in the method for machining the bearing seat of the turbocharger of the present invention. Figure 7 It is a schematic diagram of finishing the large end face and the inner hole in the method for machining the bearing seat of the turbocharger of the present invention, Figure 8 It is a schematic diagram of the outer circle, A, B reference and inner hole end face dimensions of the fine turning large end in the turbocharger bearing seat processing method of the present invention. Fig. 9 Schematic diagram of the processing of the bearing seat of the turbocharger of the present invention

[0055] The present invention also provides a method for machining a turbocharger bearing seat, which is applied to the turbocharger bearing seat machining clamping tool as described above.

[0056] The steps include:

[0057] First, the workpiece is heat treated;

[0058] Rough turning the heat-treated workpiece to remove excess stock;

[0059] Then, the center cross line and waist-shaped groove position line are drawn on the workpiece after removing the excess allowance;

[0060] Use processing equipment to align and mark the holes and waist-shaped grooves on the end surface;

[0061] The bearing seat drilling tool is used to fix the workpiece after the holes and waist-shaped grooves on the end surface are processed, and the pin holes and waist-shaped grooves on the circumference are processed;

[0062] The bearing seat drilling jig is used to fix the workpiece on which the pin holes and waist-shaped grooves on the processing circumference are completed, and countersinking is performed;

[0063] The workpiece after countersinking is fixed by the bearing seat turning tool, and then the large end face and outer circle, the small end face and outer circle are processed;

[0064] Finally, the finished workpiece is deburred to obtain the bearing seat of the turbocharger.

[0065] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A turbocharger bearing seat processing and clamping tool, characterized in that: Including bearing seat drilling jig, bearing seat drilling tooling and bearing seat turning tooling; The bearing seat drilling jig is used to clamp the bearing seat of the turbocharger, to process the holes on the end face and to mill the waist-shaped groove; The bearing seat drilling tool is used to clamp the bearing seat of the turbocharger to process the pin holes and waist-shaped grooves on the circumference; The bearing seat turning tool is used to clamp the bearing seat of the turbocharger to process the large end face and outer circle, the small end face and outer circle.

2. The turbocharger bearing seat processing and clamping tool according to claim 1, characterized in that: The bearing seat drilling jig includes a fixed mold body, a movable mold body, a first screw and a positioning pin, one end of the first screw passes through the movable mold body and is tightened on the fixed mold body, the positioning pin is arranged on the movable mold body, and a drill sleeve is arranged on the fixed mold body.

3. The turbocharger bearing seat processing and clamping tool according to claim 2, characterized in that: The bearing seat drilling jig also includes a washer, which is sleeved on the first screw and contacts the movable die body.

4. The turbocharger bearing seat processing and clamping tool according to claim 3, characterized in that: The number of the drill sleeves is multiple.

5. The turbocharger bearing seat processing and clamping tool as claimed in claim 4, characterized in that: The bearing seat drilling tool includes a main body, a pin, a second screw and a first pressure plate. The main body is positioned by the outer circle and end face of the large end of the part and is positioned by the pin. The second screw is connected to the first pressure plate.

6. The turbocharger bearing seat machining and clamping tool according to claim 5, characterized in that: The bearing seat turning tool comprises a body, a screw, a second pressing plate and a clamping assembly. The clamping assembly is arranged on the body. The screw cooperates with the second pressing plate to press on the small end surface to clamp the part.

7. The turbocharger bearing seat machining and clamping tool according to claim 6, characterized in that: The bearing seat turning tool also includes a protective member, and the protective member is arranged on the clamping assembly.

8. A method for machining a turbocharger bearing seat, applied to the turbocharger bearing seat machining clamping tool as claimed in claim 7, characterized in that: The steps include: First, the workpiece is heat treated; Rough turning the heat-treated workpiece to remove excess stock; Then, the center cross line and waist-shaped groove position line are drawn on the workpiece after removing the excess allowance; Use processing equipment to align and mark the holes and waist-shaped grooves on the end surface; The bearing seat drilling tool is used to fix the workpiece after the holes and waist-shaped grooves on the end surface are processed, and the pin holes and waist-shaped grooves on the circumference are processed; The bearing seat drilling jig is used to fix the workpiece on which the pin holes and waist-shaped grooves on the processing circumference are completed, and countersinking is performed; The workpiece after countersinking is fixed by the bearing seat turning tool, and then the large end face and outer circle, the small end face and outer circle are processed; Finally, the finished workpiece is deburred to obtain the bearing seat of the turbocharger.

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