Processing method and clamp for complex multi-hole and deep-hole cast motor shell

Abstract

The application relates to the technical field of machining, in particular to a machining method and clamp for a complex multi-hole and deep-hole cast motor shell; the clamp comprises two side plates, two supporting blocks and a base, the two side plates are provided with positioning pieces through nuts, the positioning pieces comprise two positioning mandrels and a connecting mandrel, the connecting mandrel is located above the corresponding supporting block, a long pressing plate is arranged above the supporting block, a fixing piece is arranged on the long pressing plate, the two side plates are fixedly connected with the base and are located at two ends of the base, the two supporting blocks are fixedly connected with the base through bolts and are located on the base, the long pressing plate is fixedly connected with the connecting mandrel through the fixing piece and is located above the connecting mandrel; the machining of the bevel, square groove, square hole, blind hole and threaded hole on each surface of the motor shell can be completed through the tooling clamp, the dimensional tolerance and the geometric tolerance of the part are ensured, and the part meets various requirements of the drawing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a processing method and clamp for a complex multi-hole and deep-hole cast motor shell. BACKGROUND

[0002] The heart of the turbocharging system is the adjustable flow cross-section guide vane, which can be closed at low speed and low exhaust gas volume, thereby increasing the intake pressure of the engine. The motor shell is one of the key components.

[0003] However, the current motor shell part is a cast part, the geometric shape is complex, most of which are rough surfaces that cannot be machined for positioning, so that the machining, positioning and clamping of the part are difficult. SUMMARY

[0004] The present application relates to the technical field of mechanical processing, in particular to a processing method and clamp for a complex multi-hole and deep-hole cast motor shell.

[0005] To achieve the above-mentioned purpose, a clamp for a complex multi-hole and deep-hole cast motor shell is adopted, which comprises two side plates, two supporting blocks and a base, a positioning piece is arranged between the two side plates through a nut, the positioning piece comprises two positioning mandrels and a connecting mandrel, the connecting mandrel is located above the corresponding supporting block, a long pressing plate is arranged above the supporting block, a fixing piece is arranged on the long pressing plate, the two side plates are fixedly connected with the base and located at both ends of the base, the two supporting blocks are fixedly connected with the base through bolts and located on the base, the long pressing plate is fixedly connected through the fixing piece and located above the connecting mandrel.

[0006] The side plate comprises a side plate body and a cylindrical pin, the side plate body is fixedly connected with the base through the cylindrical pin and located at one end of the base.

[0007] The fixing piece comprises a flat washer and a fixing bolt, the flat washer is sleeved on the fixing bolt, the long pressing plate is fixedly connected with the connecting mandrel through the fixing bolt, and the flat washer and the connecting mandrel are in contact with each other and located above the connecting mandrel.

[0008] The present application also provides a processing method for a complex multi-hole and deep-hole cast motor shell, which is applied to the clamp for a complex multi-hole and deep-hole cast motor shell, and comprises the following steps:

[0009] Draw the center line according to the positive part hole;

[0010] Find the positive line and N surface;

[0011] Bore the large end hole and end face;

[0012] Bore the small end hole;

[0013] Mill the square groove and plane;

[0014] Drill the bottom hole;

[0015] Mill the bottom hole;

[0016] Mill the two side surface of the part lug bevel, drill the bottom hole of each thread hole on the bevel;

[0017] Thread tapping hole;

[0018] Pressure test.

[0019] Among them, the center line according to the positive part hole includes the following steps:

[0020] Find the inner hole of the positive part, draw the cross center line on the large end surface, and extend the horizontal line to each outer surface and plane, and then draw the size line;

[0021] Symmetrically divide the large end handle of the part, draw the large end face processing line;

[0022] Draw the calibration circle line with the inner hole as the reference.

[0023] Among them, the small end hole includes the following steps:

[0024] Put the bottom plane flat, find the core rod and the positive F surface, press the part with a long pressure plate, and process each level hole and end face;

[0025] Drill the thread bottom hole.

[0026] Among them, the bottom hole includes the following steps:

[0027] Drill the through hole on the part; according to one end and the side surface of the part, bore the cylindrical surface plane, and drill the thread bottom hole;

[0028] Rotate 180°, according to one end and the side surface of the part, bore the cylindrical surface plane, and drill the thread bottom hole.

[0029] The utility model discloses a complex multi -hole and deep -hole casting motor shell's processing method and clamp, including two side plates, two support blocks and base, two the side plate is set with positioning piece through nut between, the positioning piece includes two positioning arbor and connecting arbor, and the connecting arbor is located above corresponding support block, the long pressing plate is provided with fixed part on the long pressing plate, two the side plate is fixedly connected with the base respectively and is located two ends of the base, two the support block is fixedly connected with the base through bolt and is located on the base, the long pressing plate is fixedly connected through the fixed part and is located above the connecting arbor, through this tooling fixture can complete to the inclined plane, square groove, square hole and the processing of blind hole and screw thread hole on each surface of part motor shell, guarantees the part size tolerance and form tolerance, makes the part satisfy each item requirement of drawing. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0031] Figure 1 It is the top view of the complex multi -hole and deep -hole casting motor shell's processing method and clamp of the utility model.

[0032] Figure 2 It is the local structure front view of the complex multi -hole and deep -hole casting motor shell's processing method and clamp of the utility model.

[0033] Figure 3 It is the left sectional view of the complex multi -hole and deep -hole casting motor shell's processing method and clamp of the utility model.

[0034] Figure 4 It is the right sectional view of the complex multi -hole and deep -hole casting motor shell's processing method and clamp of the utility model.

[0035] Figure 5 It is the processing schematic diagram of the complex multi -hole and deep -hole casting motor shell's middle process two of the utility model.

[0036] Figure 6 It is the processing schematic diagram of the complex multi -hole and deep -hole casting motor shell's middle process four of the utility model.

[0037] Figure 7 It is the processing schematic diagram of the complex multi -hole and deep -hole casting motor shell's middle process five of the utility model.

[0038] Figure 8It is the processing schematic diagram of the seventh process of the complex multi-hole and deep-hole cast motor shell of the present application.

[0039] Figure 9 It is the processing schematic diagram of the eighth process of the complex multi-hole and deep-hole cast motor shell of the present application.

[0040] 1-side plate body, 2-supporting block, 3-base, 4-positioning mandrel, 5-connecting mandrel, 6-long pressing plate, 7-cylindrical pin, 8-flat washer, 9-fixing bolt. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0042] Please refer to Figures 1 to 4 , wherein Figure 1 It is the processing method and clamp of the complex multi-hole and deep-hole cast motor shell of the present application, Figure 2 It is the partial structure front view of the processing method and clamp of the complex multi-hole and deep-hole cast motor shell of the present application, Figure 3 It is the left sectional view of the processing method and clamp of the complex multi-hole and deep-hole cast motor shell of the present application, Figure 4 It is the right sectional view of the processing method and clamp of the complex multi-hole and deep-hole cast motor shell of the present application,

[0043] The present application provides a clamp for complex multi-hole and deep-hole cast motor shell, comprising two side plates, two supporting blocks 2 and a base 3, a positioning member is arranged between the two side plates through a nut, the positioning member comprises two positioning mandrels 4 and a connecting mandrel 5, and the connecting mandrel 5 is located above the corresponding supporting block 2, a long pressing plate 6 is arranged above the supporting block 2, a fixing member is arranged on the long pressing plate 6, the two side plates are fixedly connected with the base 3 and located at both ends of the base 3, the two supporting blocks 2 are fixedly connected with the base 3 through bolts and located above the base 3, the long pressing plate 6 is fixedly connected through the fixing member and located above the connecting mandrel 5.

[0044] In the embodiment, the bottom plane of the processed part is placed on the positioning surface of the corresponding support block 2 to limit the height dimension of the part; the two positioning spindles 4 and the connecting spindle 5 are used to limit the lateral dimension of the part; the design realizes the positioning and clamping of each surface and hole of the part by changing the different mounting modes of the part; the base 3 is used to connect other components and the machine tool; the positioning spindle 4 is used for axial positioning of the part; the connecting spindle 5 is used for cooperating positioning with the inner hole of the part and also connects the positioning spindle 4; the support block 2 is used to support the part during assembly and processing to ensure the height dimension; and the long pressing plate 6 is used to press the part to avoid movement of the part.

[0045] Further, the side plate comprises a side plate body 1 and a cylindrical pin 7, the side plate body 1 is fixedly connected with the base 3 through the cylindrical pin 7 and is located at one end of the base 3.

[0046] In the embodiment, the side plate body 1 can be conveniently installed through the cylindrical pin 7, so that the side plate body 1 can support the positioning member.

[0047] Further, the fixing member comprises a flat washer 8 and a fixing bolt 9, the flat washer 8 is sleeved on the fixing bolt 9, the long pressing plate 6 is fixedly connected with the connecting spindle 5 through the fixing bolt 9, and the flat washer 8 and the connecting spindle 5 abut each other and are located above the connecting spindle 5.

[0048] In the embodiment, the flat washer 8 can conveniently disperse the pressure between the connecting members to prevent loosening or damage of the connecting members.

[0049] In the embodiment, the bottom plane of the processed part is placed on the positioning surface of the corresponding support block 2 to limit the height dimension of the part; the two positioning spindles 4 and the connecting spindle 5 are used to limit the lateral dimension of the part; the design realizes the positioning and clamping of each surface and hole of the part by changing the different mounting modes of the part; the base 3 is used to connect other components and the machine tool; the positioning spindle 4 is used for axial positioning of the part; the connecting spindle 5 is used for cooperating positioning with the inner hole of the part and also connects the positioning spindle 4; the support block 2 is used to support the part during assembly and processing to ensure the height dimension; and the long pressing plate 6 is used to press the part to avoid movement of the part, so as to effectively solve the technical problems that the motor shell part is a cast part, the geometric shape is complex, most of them are rough surfaces that cannot be processed, and cannot be used for positioning for finishing, so that the processing, positioning and clamping of the part are difficult.

[0050] Please refer to Figures 5 to 9 , wherein Figure 5It is the machining schematic view of the second middle process of the complicated multi-hole and deep-hole cast motor shell of the present application, Figure 6 It is the machining schematic view of the fourth middle process of the complicated multi-hole and deep-hole cast motor shell of the present application, Figure 7 It is the machining schematic view of the fifth middle process of the complicated multi-hole and deep-hole cast motor shell of the present application, Figure 8 It is the machining schematic view of the seventh middle process of the complicated multi-hole and deep-hole cast motor shell of the present application, Figure 9 It is the machining schematic view of the eighth middle process of the complicated multi-hole and deep-hole cast motor shell of the present application.

[0051] The present application also provides a machining method of the complicated multi-hole and deep-hole cast motor shell, which is applied to the clamp of the complicated multi-hole and deep-hole cast motor shell and includes the following steps:

[0052] Drawing the center line according to the hole of the positive part;

[0053] Finding the positive line and the N surface;

[0054] Boring the big end inner hole and the end surface;

[0055] Boring the small end inner hole;

[0056] Milling the square groove and the plane;

[0057] Drilling the bottom hole;

[0058] Milling the bottom hole;

[0059] Milling the ear inclined surface of the two side surfaces of the part, drilling the bottom hole of each thread hole on the inclined surface;

[0060] Tapping the thread hole;

[0061] Carrying out the pressure test.

[0062] Further, the drawing of the center line according to the hole of the positive part includes the following steps:

[0063] Finding the inner hole of the positive part, drawing the cross center line on the big end surface, extending the horizontal line to each outer surface and the plane, and then drawing the dimension line;

[0064] Drawing the big end surface processing line by taking the big end handle part of the part as the symmetry center;

[0065] Drawing the calibration circle line by taking the inner hole as the reference.

[0066] Further, the boring of the small end inner hole includes the following steps:

[0067] Putting the bottom plane flat, finding the core rod and the positive F surface, pressing the part by the long pressing plate, and processing each level inner hole and end surface;

[0068] Drilling the thread bottom hole.

[0069] Further, the drilling and tapping of the bottom hole comprises the following steps:

[0070] Drilling a through hole on the part; boring a cylindrical surface plane according to one end and side surface of the part, and drilling a threaded bottom hole;

[0071] Rotating 180°, boring a cylindrical surface plane according to one end and side surface of the part, and drilling a threaded bottom hole.

[0072] In the present embodiment, the specific process steps are as follows:

[0073] Process one: draw a center line according to the hole of the positive part, and draw a center line according to the hole of the negative part Figure 1 Scribing: find the center line of the inner hole of the part Ф48mm, draw a cross center line on the large end surface, and extend a horizontal scribing line to each outer surface and plane with the center of the 2-Ф20mm circle, and then draw a 47mm size line; symmetrically divide the large end handle part with the part, draw a large end surface processing line according to the size 114mm, and check whether the size 174.6mm is on the entity; draw a calibration circle line on the A end surface with the Ф48mm inner hole as the reference;

[0074] Process two: find the positive scribing line and N surface, and draw a center line according to the hole of the negative part Figure 5 Part processing: align the scribing line and N surface according to the drawing gasket and clamping plate, and then light up the N surface for subsequent positioning;

[0075] Process three: bore the large end inner hole to Ф59mm, H8mm, and bore the end surface according to the hole of the negative part Figure 7 Part processing: align the end surface and scribing line with the bottom plane, and then clamp the long clamping plate tightly;

[0076] Process four: bore the small end inner hole according to the hole of the negative part Figure 6 Part processing: align the core rod outer circle runout not greater than 0.05mm, and align the F surface runout not greater than 0.03mm, and then clamp the long clamping plate tightly and process the inner hole and end surface; drill a threaded bottom hole with a diameter of Ф5mm, a depth of 13mm, and a hole opening chamfer of 1×45° on the small end surface; since the G reference inner hole is difficult to align directly, it is necessary to indirectly align the reference hole with the aid of the core rod; the core rod is matched with the G reference inner hole to ensure that the gap is about 0.05mm, and the core rod outer circle coaxiality error is not greater than 0.02mm to ensure the alignment effectiveness and the coaxiality requirement of the Ф55±0.05mm inner hole;

[0077] Process five: mill the square groove and plane according to the hole of the negative part Figure 7 Part processing: align the positioning part, clamp the long clamping plate tightly, and process the 26±0.02×75mm square groove; process the Ra0.8 plane by high-speed milling; mill the 13×60mm square hole, and mill the round angle to be a right angle by filing by the bench worker; mill the handle symmetric size 12.1±0.01mm;

[0078] The tooling method of this process is as follows: firstly, the two positioning mandrels 4 and the connecting mandrel 5 are assembled as shown in the figure, then the whole is inserted into the part, then the small end of the part is pressed by a bolt, then the whole is put into the square groove of the base 3, then the part is pressed by the long pressing plate 6, and the part can be machined after the positioning is found;

[0079] Process six: drilling and tapping bottom holes: drill Φ17 through holes on the part; according to one end and the side surface of the part, bore a cylindrical surface and a plane with a size of 110mm, drill a threaded bottom hole with a size of Φ6.8mm and a depth of 10mm, and the hole mouth chamfer is 1x45°; then rotate 180°, according to one end and the side surface of the part, bore a cylindrical surface and a plane with a size of 110mm, drill a threaded bottom hole with a size of Φ6.8mm and a depth of 10mm, and the hole mouth chamfer is 1x45°; finally, remove the tooling and take out the part;

[0080] The tooling method of this process is as follows: the two positioning mandrels 4 and the connecting mandrel 5 are inserted into the part, the nut is used to press the part, the side plate is removed, the part and the mandrel are assembled into the base 3, and then the long pressing plate 6 is used to press the part to machine the large end holes of the part;

[0081] Process seven: milling bottom holes: according to Figure 8 Turn over the part, mill the bottom plane, and drill the bottom holes of each threaded hole on the bottom plane;

[0082] The tooling method of this process is as follows:

[0083] The part and the mandrel are turned in the same direction and installed on the base 3 and the corresponding support block 2, then the nut is tightened and the long pressing plate 6 is used to press the part to start machining the part;

[0084] Process eight: according to Figure 9 Mill the ear inclined surface on both side surfaces of the part, and drill the bottom holes of each threaded hole on the inclined surface;

[0085] The tooling method of this process is as follows:

[0086] The installation method is consistent with the previous process, and the tooling and the part are rotated by 15° on the machining center workbench to machine the part;

[0087] Process nine: tapping M8 and below threaded holes and chamfering the sharp edges of the part, and removing burrs;

[0088] Process ten: use special tooling and perform pressure test according to requirements.

[0089] The above disclosed is only a preferred embodiment of the present application, of course, cannot be limited by this, the person skilled in the art can understand that the all or part of the processes of the above-mentioned embodiment are realized, and the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A method for machining complex porous and deep-hole cast motor housings, characterized in that, A fixture for casting complex porous and deep-hole motor housings is used. The fixture includes two side plates, two support blocks, and a base. A positioning element is provided between the two side plates by nuts. The positioning element includes two positioning mandrels and a connecting mandrel. The connecting mandrel is located above the corresponding support block. A long pressure plate is provided above the support block. A fixing element is provided on the long pressure plate. The two side plates are respectively fixedly connected to the base and located at both ends of the base. The two support blocks are respectively fixedly connected to the base by bolts and located on the base. The long pressure plate is fixedly connected by the fixing element and located above the connecting mandrel. The steps are as follows: Draw the center line based on the hole in the positive part; Identify the positive line and the N-plane; Boring out the inner hole and end face of the large end; Boring out the inner hole at the small end; Milling the square groove and plane: After aligning the positioning part, press it with a long pressure plate and machine a 26±0.02×75mm square groove; use high-speed milling to machine the Ra0.8 plane; mill a 13×60mm square hole, and the rounded corners are filed into right angles by the fitter; the symmetrical dimension of the milling shank is 12.1±0.01mm; the tooling method for this process is as follows: first assemble the two positioning mandrels and the connecting mandrel, insert the whole into the part, then use bolts to press the small end of the part, and then put the whole into the square groove of the base, and then use the long pressure plate to press the part. Drilling and tapping the pilot hole: Drill a Φ17 through hole on the part; according to one end and side of the part, bore a cylindrical surface and a flat surface with a size of 110mm, and drill a threaded pilot hole with a diameter of Φ6.8mm, a depth of 10mm, and a chamfer of 1×45°; then rotate 180°, according to one end and side of the part, bore a cylindrical surface and a flat surface with a size of 110mm, and drill a threaded pilot hole with a diameter of Φ6.8mm, a depth of 10mm, and a chamfer of 1×45°; finally remove the tooling and take out the part; the tooling usage method for this process is as follows: insert the two positioning mandrels and the connecting mandrel into the part, use nuts to tighten the part, remove the side plate, install the part and mandrels as a whole into the base, and then use the long pressure plate to tighten the part to process the holes at the large end of the part; Milling the bottom hole: The tooling method for this process is as follows: rotate the part and the mandrel as a whole, install them on the base and the corresponding support block, then tighten the nut and use the long pressure plate to press the part to start processing the part, mill the bottom plane, and drill the bottom holes of each threaded hole on the bottom plane; Mill the beveled surfaces of the lugs on both sides of the part, and drill the bottom holes of each threaded hole on the beveled surface; Tapping threaded holes; Conduct a pressure test.

2. The processing method for complex porous and deep-hole cast motor housings as described in claim 1, characterized in that, The side plate includes a side plate body and a cylindrical pin. The side plate body is fixedly connected to the base through the cylindrical pin and is located at one end of the base.

3. The processing method for complex porous and deep-hole cast motor housings as described in claim 2, characterized in that, The fastener includes a flat washer and a fixing bolt, with the flat washer fitted onto the fixing bolt.

4. The processing method for complex porous and deep-hole cast motor housings as described in claim 1, characterized in that, Drawing the center line based on the hole in the positive part includes the following steps: Locate the inner hole of the positive part, draw a cross center line on the large end face, extend the horizontal line to each outer circle and plane, and then draw dimension lines; Draw the machining lines on the large end face of the part, symmetrically dividing the large end shank. Draw a calibration circle using the inner hole as a reference.

5. The processing method for complex porous and deep-hole cast motor housings as described in claim 1, characterized in that, The boring of the small end inner hole includes the following steps: Flatten the bottom plane, align the mandrel and the positive F surface, press the long pressure plate to tighten the part, and machine the internal holes and end faces of each level.

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