CN115847133A - Machining center of automobile engine camshaft support and manufacturing method thereof - Google Patents

Abstract

The invention discloses a machining center of an automobile engine camshaft support and a manufacturing method thereof, wherein the machining center comprises a machining fixture and press-fitting equipment for clamping the engine camshaft support, the machining fixture comprises a first workbench, a second workbench and a mistake-proofing system, the second workbench is vertical to the first workbench, and the mistake-proofing system is arranged in the first workbench and the second workbench; the error-proofing system comprises an error-proofing gas circuit, a leakage sensor for detecting the tightness of the error-proofing gas circuit and a control center connected with the leakage sensor, wherein the control center detects the tightness of the error-proofing gas circuit through the leakage sensor; the press-fitting equipment comprises a press-fitting main body, a pin and a mistake-proofing pointer, wherein the pin is arranged on the press-fitting main body, and the mistake-proofing pointer is positioned below the pin. The machining center of the automobile engine camshaft support and the manufacturing method thereof have the advantages that the engine camshaft support is clamped in place, and a pin is pressed in correctly.

Description

Machining center of automobile engine camshaft support and manufacturing method thereof

Technical Field

The invention relates to the field of manufacturing of engine supports, in particular to a machining center of an automobile engine camshaft support and a manufacturing method thereof.

Background

The requirement for the machining precision of the existing automobile engine camshaft support is higher and higher, the efficiency is improved under the condition of meeting the machining precision, the problem is urgently needed to be solved, in addition, because the engine camshaft support products are small and poor in one-step clamping fixation, the product clamping deflection is easily caused, in addition, the risk that parts with the same external diameter but different lengths are mixed when the engine camshaft support products are subjected to pin pressing can exist, and the defects of the production lines are all needed to be solved.

The traditional processing method of the camshaft support of the automobile engine at present adopts a method of processing a direction surface and a hole by using one pair of clamps, so that the processing of the camshaft support of the automobile engine needs two pairs of clamps, needs two processing centers, needs an operator to run back and forth between the two clamps, and causes the problem of low efficiency; and because the engine camshaft support products are small and the one-time clamping fixing property is poor, clamping is realized by manual sensing during clamping, and the risk of clamping failure can exist under the condition of mass production.

Therefore, the machining center of the camshaft bracket of the automobile engine and the manufacturing method thereof are provided for overcoming the defects in the prior art.

Disclosure of Invention

The invention provides a machining center of an automobile engine camshaft support and a manufacturing method thereof, and aims to solve the problems that the engine camshaft support is not clamped in place and pins are pressed wrongly.

The invention adopts the following technical scheme:

a machining center of an automobile engine camshaft support comprises a machining clamp and press-fitting equipment, wherein the machining clamp is used for clamping the engine camshaft support, and comprises a first workbench, a second workbench and a mistake proofing system, the second workbench is perpendicular to the first workbench, and the mistake proofing system is arranged in the first workbench and the second workbench;

the first workbench comprises a processing transverse plate and a first clamping assembly arranged on the processing transverse plate, and the camshaft support is clamped on the first clamping assembly and processed along a first processing direction;

the second workbench comprises a processing vertical plate and a second clamping assembly arranged on the processing vertical plate, and the camshaft support is clamped on the second clamping assembly and processed along a second processing direction;

the error-proofing system comprises an error-proofing gas circuit, a leakage sensor and a control center, wherein the leakage sensor is used for detecting the tightness of the error-proofing gas circuit, the control center is connected with the leakage sensor, the control center detects the tightness of the error-proofing gas circuit through the leakage sensor, and the error-proofing gas circuit comprises a first gas circuit grid and a second gas circuit grid which are respectively arranged in the first workbench and the second workbench;

the press-fitting equipment comprises a press-fitting main body, a pin and a mistake-proofing pointer, wherein the pin is arranged on the press-fitting main body, and the mistake-proofing pointer is positioned below the pin.

As a further improvement of the technical scheme of the invention, the first clamping assembly comprises a plurality of first positioning pin seats, first positioning pins assembled on the first positioning pin seats and a first pressing piece for pressing the camshaft support;

the first pressing piece comprises a first pressing rod and a first air cylinder for controlling the first pressing rod, the camshaft support is fixed with the two first positioning pins through the first pressing rod, and the first air cylinder adjusts pressure on the camshaft support through the first pressing rod.

As a further improvement of the technical scheme of the invention, the first workbench is further provided with a lower transverse plate fixed on the workbench of the machining center and a plurality of stand columns connecting the machining transverse plate and the lower transverse plate, the lower transverse plate and the machining transverse plate are arranged in parallel, and the first air cylinder is arranged between the machining transverse plate and the lower transverse plate.

As a further improvement of the technical scheme of the invention, the first air passage grid comprises a first transverse through hole penetrating through the processing transverse plate along the X-axis direction, a plurality of first air passage holes and a first through hole communicating the first transverse through hole and the first air passage holes, and the first through hole corresponds to the two first air passage holes;

one end of the first transverse through hole is provided with a first interface, the first interface is connected with the leakage sensor, and one end far away from the first interface is plugged through a plugging piece.

As a further improvement of the technical scheme of the invention, the first positioning pin base is provided with two first detection holes, and the first transverse through hole, the first air passage hole, the first through hole and the first detection hole form an L1 air passage.

As a further improvement of the technical scheme of the invention, the second clamping assembly comprises a plurality of second positioning pin seats, second positioning pins assembled on the second positioning pin seats and second pressing pieces for fixing the camshaft support;

the second pressing piece comprises a second pressing rod and a second air cylinder for controlling the second pressing rod, the camshaft support is fixed with the two second positioning pins through the two second pressing rods, and the second air cylinder adjusts the pressure on the camshaft support through the second pressing rod.

As a further improvement of the technical scheme of the invention, the second gas path grid comprises a second transverse through hole penetrating through the processing transverse plate along the X-axis direction, a plurality of second gas path holes and a second through hole communicating the second transverse through hole with the second gas path holes, and the second through holes correspond to the second gas path holes one to one;

and one end of the second transverse through hole is provided with a second interface, the second interface is connected with the leakage sensor, and one end far away from the second interface is plugged by a plugging piece.

As a further improvement of the technical scheme of the present invention, the second positioning pin base is provided with two second detection holes, and the second transverse through hole, the second air passage hole, the second through hole and the second detection hole form an L2 air passage.

As a further improvement of the technical scheme of the invention, the mistake proofing system further comprises an air source for supplying air to the mistake proofing air path, and the air source is communicated with the mistake proofing air path;

and the air source is communicated with the leakage sensor to form an L4 air path channel.

The manufacturing method of the automobile engine camshaft support is suitable for the machining center of the automobile engine camshaft support, and the camshaft support comprises an abutting surface, a large combination plane which is arranged to be deviated from the abutting surface, a shaft hole which is matched with a camshaft, shaft hole end faces which are arranged at two ends of the shaft hole and two phi 9 pin holes.

The method comprises the following steps: s1, processing a camshaft support to be processed in a first processing direction;

s1.1, clamping a large combining plane of a camshaft support to be machined on a first clamping assembly upwards, wherein two phi 9 pin holes serve as coarse positioning holes, and a butting surface serves as a coarse positioning surface;

s1.2, checking the airtightness of the first gas path grid through a leakage sensor;

s1.3, drilling and reaming a phi 9 pin hole;

s1.4, roughly and finely milling a large combination plane;

step S1.5, cleaning a camshaft support;

s2, processing the camshaft support processed in the first processing direction in the second processing direction;

s2.1, clamping the end face of the shaft hole of the camshaft support processed in the first processing direction upwards on a second clamping assembly, wherein two phi 9 pin holes are used as fine positioning holes, and a large combination plane is used as a fine positioning plane;

s2.2, checking the tightness of the second gas path grid through a leakage sensor;

s2.3, roughly and finely milling the end face of the shaft hole;

step S2.4, cleaning the camshaft support;

s3, pressing two phi 9 pins on the camshaft support;

s4, carrying out full inspection;

and S5, packaging.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides a machining center of an automobile engine camshaft support and a manufacturing method thereof.A pair of machining clamps and press-fitting equipment are adopted, each machining clamp comprises a first workbench and a second workbench which is vertical to the first workbench, two direction surfaces and holes of a product can be machined at the same time, and the first workbench and the second workbench are also provided with error-proofing systems which can prevent the machining clamps from being installed and clamped with the camshaft support in an offset manner; when the cam shaft support is pressed and pinned, the error-proof pointer in the press-fitting equipment can prevent pins with different lengths from being mixed. The machining center of the automobile engine camshaft support and the manufacturing method thereof have the characteristics that the engine camshaft support is clamped in place and pins are correctly pressed in.

Drawings

The technology of the present invention will be described in further detail with reference to the accompanying drawings and detailed description below:

FIG. 1 is a plan view of a machining jig in a machining center of a camshaft support of an automobile engine;

FIG. 2 is a front view of a machining jig in a machining center of an automotive engine camshaft support;

FIG. 3 is a front view of a machining center of a camshaft support of an automotive engine;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a cross-sectional schematic view of a camshaft support;

FIG. 6 is a top view of the camshaft support;

FIG. 7 is a front view of a first air passage grid in the machining center of an automotive engine camshaft support;

FIG. 8 is a cross-sectional view of a first air path grid in a machining center of an automotive engine camshaft support;

FIG. 9 is a front view of a second air path grid in the machining center of an automotive engine camshaft support;

FIG. 10 is a cross-sectional view of a second air passage grid in the machining center of the camshaft support of the automotive engine;

FIG. 11 is a schematic cross-sectional view of a first/second locating boss in a machining center of an automotive engine camshaft support;

FIG. 12 is a schematic view showing a gas tightness detection process in a machining center of a camshaft support of an automobile engine.

Reference numerals:

1. a first table; 11. a transverse plate; 12. a first clamping assembly; 121. a first dowel seat; 1211. a first detection hole; 122. a first positioning pin; 123. a first pressing member; 1231. a first hold down bar; 1232. a first cylinder; 13. a first gas path grid; 131. a first transverse perforation; 1311. a first interface; 132. a first air passage hole; 133. a first through hole; 14. a lower transverse plate; 15. a column;

2. a second table; 21. a vertical plate; 22. a second clamping assembly; 221. a second locating pin boss; 2211. a second detection hole; 222. a second positioning pin; 223. a second pressing member; 2231. a second hold down bar; 2232. a second cylinder; 23. a second gas path grid; 231. a second transverse through hole; 2311. a second interface; 232. a second gas path hole; 233. a second through hole;

3. a mistake proofing system; 31. a mistake proofing gas circuit; 32. a leak sensor; 33. a control center; 34. a gas source; 4. pressing the main body; 5. a pin; 6. a mistake proofing pointer; 7. a camshaft support; 71. an abutting surface; 72. a large bonding plane; 73. a shaft hole; 74. a pin hole; 75. the end surface of the shaft hole.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the components of the present invention with respect to each other in the drawings.

A machining center of a camshaft support of an automobile engine and a manufacturing method thereof refer to FIGS. 1 to 12, and comprise a machining clamp and press-fitting equipment;

the machining fixture is used for clamping an engine camshaft support 7 and comprises a first workbench 1, a second workbench 2 and a mistake-proofing system 3, wherein the second workbench 2 is perpendicular to the first workbench 1, and the mistake-proofing system 3 is arranged in the first workbench 1 and the second workbench 2; the first workbench 1 comprises a processing transverse plate 11 and a first clamping assembly 12 arranged on the processing transverse plate 11, and the camshaft bracket 7 is clamped on the first clamping assembly 12 and processed along a first processing direction; the first processing direction is a Z-axis direction; the second workbench 2 comprises a processing vertical plate 21 and a second clamping assembly 22 arranged on the processing vertical plate 21, and the camshaft support 7 is clamped on the second clamping assembly 22 and processed along a second processing direction; the second processing direction is a Y-axis direction; the error-proofing system 3 comprises an error-proofing gas circuit 31, a leakage sensor 32 for detecting the tightness of the error-proofing gas circuit 31 and a control center 33 connected with the leakage sensor 32, wherein the control center 33 detects the tightness of the error-proofing gas circuit 31 through the leakage sensor 32, and the error-proofing gas circuit 31 comprises a first gas circuit grid 13 and a second gas circuit grid 23 which are respectively arranged inside the first workbench 1 and the second workbench 2; the press-fitting equipment comprises a press-fitting main body 4, a pin 5 and an error-proofing pointer 6, wherein the pin 5 is arranged on the press-fitting main body 4, and the error-proofing pointer 6 is positioned below the pin 5; as shown in fig. 1, the X-axis direction is set along the longitudinal direction of the processing transverse plate 11, and the Y-axis direction is set along the width direction of the processing transverse plate 11, and therefore, the Z-axis direction is set perpendicular to the processing transverse plate 11.

The machining fixture comprises a first workbench 1 and a second workbench 2 which is perpendicular to the first workbench 1, two direction surfaces and holes of a product can be machined at the same time, and the first workbench 1 and the second workbench 2 are also provided with error prevention systems 3 which can prevent the machining fixture from deviating during clamping of the camshaft support 7; when the camshaft support 7 is pressed, the error-proof pointer 6 in the press-fitting device can prevent pins 5 with different lengths from being mixed. The machining center of the automobile engine camshaft support 7 and the manufacturing method thereof have the characteristics that the engine camshaft support 7 is clamped in place and the pin 5 is correctly pressed in.

In one embodiment, the first clamping assembly 12 comprises four first positioning pin 122 seats 121, a first positioning pin 122 assembled on the first positioning pin 122 seats 121, and a first pressing member 123 for pressing the camshaft support 7; the first pressing member 123 includes a first pressing rod 1231 and a first cylinder 1232 for controlling the first pressing rod 1231, when installing, the camshaft support 7 is fixed with the two first positioning pins 122 through the first pressing rod 1231, at this time, the two ends of the first pressing rod 1231 respectively press the camshaft support 7 to be fixed and then are processed, and the first cylinder 1232 adjusts the pressure on the camshaft support 7 through the first pressing rod 1231.

In one embodiment, the first workbench 1 is further provided with a lower transverse plate 1411 fixed on the workbench of the machining center, and a plurality of columns 15 connecting the machining transverse plate 11 and the lower transverse plate 1411, the lower transverse plate 1411 is arranged in parallel with the machining transverse plate 11, and the first cylinder 1232 is arranged between the machining transverse plate 11 and the lower transverse plate 1411; the thickness of the lower transverse plate 1411 is 25mm, a workbench fixing groove is formed, two vertical edges in front of the lower transverse plate 1411 are designed as a jig measurement X, Y coordinate reference and can be used as an adjustment reference of a field adjustment jig, the roughness requirement is Rz6.3, the installation bottom surface of the lower transverse plate 1411 is designed as a measurement Z coordinate reference, the flatness requirement is 0.01, and the surface ensures that the roughness is Rz1.6; the processing transverse plate 11 is fixedly connected with the lower transverse plate 1411 through 4 columns 15, and the parallelism between the upper end face of the processing transverse plate 11 and the lower end face of the lower transverse plate 1411 after assembly is required to be less than 0.015.

In one embodiment, the first air passage grid 13 includes a first phi 6 through hole 131 penetrating the processing transverse plate 11 along the X-axis direction, four air passage holes, and a first phi 6 through hole 133 communicating the first phi 6 through hole 131 with the first phi 3 air passage hole 132, the first phi 6 through hole 133 corresponding to the first phi 3 air passage hole 132; the first positioning pin 122 seat 121 is provided with two first phi 2 x phi 0.6 detection holes 1211, the phi 6 first transverse through hole 131, the phi 3 first air passage hole 132, the phi 6 first through hole 133 and the phi 2 x phi 0.6 first detection hole 1211 form an L1 air passage, and the L1 air passage, the leakage sensor 32 and the control center 33 form a first detection system. One end of the first transverse through hole 131 is provided with a first interface 1311, the first interface 1311 is connected with the leakage sensor 32, and the end far away from the first interface 1311 is blocked by a blocking piece. The first interface 1311 is a ZG1/8 interface, and after the clamping of the machining clamp is completed, the first interface 1311 is used for connecting the leakage sensor 32 to take over the RC1/8 interface, and one end, far away from the first interface 1311, is blocked by a blocking screw; when the camshaft support 7 is not installed eccentrically, the abutting surface 71 of the camshaft support 7 can seal two phi 2 x phi 0.6 first detection holes 1211, a leakage value A is set on the leakage sensing gas to be less than or equal to 100Pa, the leakage value is in a set range, the control center 33 cannot receive a signal of the leakage sensor 32 and judges the state as OK, the control center 33 does not give an alarm, and at the moment, the machining center can machine the camshaft support 7; when the camshaft support 7 is not clamped in place and is eccentrically arranged, the abutting surface 71 of the camshaft support 7 cannot completely seal the two phi 2 x phi 0.6 first detection holes 1211, the leakage value exceeds a set range, the control center 33 receives a signal of the leakage sensor 32 and judges that the camshaft support 7 is in an NG state, the control center 33 gives an alarm, and the processing center cannot process the camshaft support 7 at the moment.

In one embodiment, the second clamping assembly 22, four second positioning pin 222 seats 221, a second positioning pin 222 assembled on the second positioning pin 222 seats 221, and three second pressing pieces 223 for fixing the camshaft support 7, wherein the four second positioning pin 222 seats 221 are arranged side by side, and two camshafts are respectively fixed between the three second pressing pieces 223 at intervals; the second pressing member 223 includes a second pressing rod 2231 and a second cylinder 2232 for controlling the second pressing rod 2231, the second pressing rods 2231 of the second pressing members 223 disposed at both sides respectively press one end of the two camshaft supports 7, both ends of the second pressing rod 2231 of the second pressing member 223 disposed at the middle respectively press the other end of the two camshaft supports 7, when the camshaft supports are mounted, the camshaft supports 7 are processed after being fixed with the two second positioning pins 222 by the two second pressing rods 2231, and the second cylinder 2232 adjusts the pressure on the camshaft supports 7 by the second pressing rod 2231.

In one embodiment, the second air passage grid 23 includes a phi 6 second transverse hole 231, four phi 3 second air passage holes 232 and a phi 6 second through hole 233 communicating the phi 6 second transverse hole 231 and the phi 3 second air passage holes 232, which penetrate through the processing transverse plate 11 along the X-axis direction, wherein the phi 6 second through holes 233 correspond to the phi 3 second air passage holes 232 one to one; the second positioning pin 222 seat 221 is provided with two phi 2 x phi 0.6 second detection holes 2211, the phi 6 second transverse through hole 231, the phi 3 second air passage hole 232, the phi 6 second through hole 233 and the phi 2 x phi 0.6 second detection hole 2211 form an L2 air passage, and the L2 air passage, the leakage sensor 32 and the control center 33 form a second detection system. A second interface 2311 is arranged at one end of the second transverse through hole 231, the second interface 2311 is connected with the leakage sensor 32, and one end far away from the second interface 2311 is blocked by a blocking piece. The second interface 2311 is a ZG1/8 interface, after the clamping of the processing clamp is finished, the second interface 2311 is used for connecting the RC1/8 interface of the connecting pipe of the leakage sensor 32, and one end, far away from the second interface 2311, is blocked by a blocking screw; when the camshaft support 7 is not installed eccentrically, the large combining plane 72 of the camshaft support 7 can seal the two phi 2 x phi 0.6 second detection holes 2211, a leakage value A is set on the leakage sensing gas to be less than or equal to 100Pa, the leakage value is in a set range, the control center 33 cannot receive a signal of the leakage sensor 32 and judges the state as OK, the control center 33 does not send out an alarm, and at the moment, the processing center can process the camshaft support 7; when the camshaft support 7 is clamped in place or is deviated, the large combining plane 72 of the camshaft support 7 cannot completely seal the two phi 2 x phi 0.6 second detection holes 2211, the leakage value exceeds the set range, the control center 33 receives the signal of the leakage sensor 32 and judges that the camshaft support 7 is in an NG state, the control center 33 gives an alarm, and the processing center cannot process the camshaft support 7 at the moment.

In one embodiment, the first detection hole 1211 and the second detection hole 2211 are not more than 1.5, and considering that the abutting surface 71 and the large combining plane 72 of the camshaft support 7 are small and need to be matched with the detection range of the leakage detector, after the test, the detection hole is set to be 0.6, and the hole depth of the detection hole is set to be 2mm to ensure the stable detection air flow; the first air passage hole 132 and the second air passage hole 232 are both provided with phi 20 counter bores for installing O-shaped sealing rings, and phi 16 holes for installing locating pin seats.

In one embodiment, the first interface 1311 and the second interface 2311 are communicated through a three-way interface to form an L3 air path channel, and the L air path channel, the two leakage sensors 32 and the control center 33 form a third detection system; the error-proofing system 3 further comprises an air source 34 for supplying air to the error-proofing air path 31, and the air source 34 is communicated with the error-proofing air path 31; the air source 34 is communicated with the leakage sensor 32 to form an L4 air path channel, and the L4 air path channel and the control center 33 form a fourth detection system; it can be known that the L1 gas path channel, the L2 gas path channel, the L3 gas path channel, and the L4 gas path channel constitute the error-proofing gas path 31, and the first detection system, the second detection system, the third detection system, and the fourth detection system are all independently controlled and constitute the error-proofing system 3.

A manufacturing method of a camshaft support 7 of an automobile engine, a machining center of the camshaft support 7 of the automobile engine of any one of the above; the camshaft bracket 7 comprises an abutting surface 71, a large combining plane 72 arranged to be deviated from the abutting surface 71, a shaft hole 73 matched with the camshaft, shaft hole 73 end surfaces arranged at two ends of the shaft hole 73 and two phi 9 pin holes 74.

The method comprises the following steps:

s1, processing a camshaft support to be processed in a first processing direction;

s1.1, clamping a large combining plane of a camshaft support to be machined on a first clamping assembly upwards, wherein two phi 9 pin holes serve as coarse positioning holes, and a butting surface serves as a coarse positioning surface;

s1.2, checking the airtightness of the first gas path grid through a leakage sensor;

s1.3, drilling and reaming a phi 9 pin hole; the phi 9 pin hole size is phi 9 (+ 0, 022/0) multiplied by phi 9 (-0.03/-0.05), the roughness is Rz12.5, the processing depth is 6.5 +/-0.1, and the PCD cutter and the hydraulic cutter handle are adopted, so that the high-speed processing rotating speed S6000 can be realized, and the feeding F1500 can be realized;

s1.4, roughly and finely milling a large combination plane; the roughness of the large combined plane is Rz6.3, the flatness is 0.05, the thickness dimension is 18.0 +/-0.15, the large combined plane is machined by adopting a special three-side milling cutter, and the large combined plane can be quickly machined by feeding F2000 at the rotating speed of S7000;

step S1.5, cleaning a camshaft support;

s2, processing the camshaft support processed in the first processing direction in the second processing direction;

s2.1, clamping the end face of a shaft hole of the camshaft support processed in the first processing direction upwards on a second clamping assembly, wherein two phi 9 pin holes are used as fine positioning holes, and a large combination plane is used as a fine positioning plane;

s2.2, checking the tightness of the second gas path grid through a leakage sensor;

s2.3, roughly and finely milling the end face of the shaft hole; the processing thickness of the upper end face and the lower end face of the shaft hole is 21 (0/-0.05), the roughness is Rz12.5, a PCD blade with a specific angle is adopted, the high-speed processing rotating speed S7000 can be realized, the F2000 can be fed, and the requirement of the surface distance smaller than 0.05 can be well ensured;

step S2.4, cleaning the camshaft support;

s3, pressing a pin with the diameter of two phi 9 against the camshaft support; the length of the pin is 10mm, and when the pin is produced on site, the pin with the length specification of 14mm is adopted due to different vehicle types; if the mixed pins with different length specifications cannot be identified, the pin pressing error can be caused. A pointer type induction mistake-proofing system is arranged on a press-fitting fixture and equipment of an aluminum alloy bracket of the engine, and can be used for proofing a pin with the length of 14 mm; when a pin with the normal length of 10mm is arranged on the clamp, the error-proof pointer can rotate to pass through the lower part of the pin, and the system can judge OK; when the pin with the length of 14mm is mixed, the length of the 14mm long pin is 4mm larger than that of the 10mm long pin; when the error-proof pointer rotates to pass through, the error-proof pointer can hit a long pin with the length of 14mm, and the error-proof pointer cannot pass through; at the moment, the system alarms, and judges that the pin cannot be pressed.

S4, carrying out full inspection; 3) The test is carried out by using a special test tool 2SV1.5-L1-7005 (three test blocks: a detection block 1 with a detection gap of 0.02mm; a detection block 2, the detection gap is 0.04mm; the detection block 3 detects that the gap is 0). The leakage air pressure of each detection point is in a qualified range, and each detection point on the positioning pin seat is ensured to work normally.

And S5, packaging.

Other contents of the machining center of the camshaft bracket of the automobile engine and the manufacturing method thereof are referred to in the prior art and are not described in detail herein.

The above embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto in any way, so that any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the present invention, unless departing from the technical spirit of the present invention.

Claims (10)

1. The machining center of the camshaft support of the automobile engine is characterized by comprising a machining clamp and a press-fitting device, wherein the machining clamp is used for clamping the camshaft support of the engine and comprises a first workbench, a second workbench and a mistake proofing system, the second workbench is perpendicular to the first workbench, and the mistake proofing system is arranged in the first workbench and the second workbench;

the first workbench comprises a processing transverse plate and a first clamping assembly arranged on the processing transverse plate, and the camshaft support is clamped on the first clamping assembly and processed along a first processing direction;

the second workbench comprises a processing vertical plate and a second clamping assembly arranged on the processing vertical plate, and the camshaft support is clamped on the second clamping assembly and processed along a second processing direction;

the error-proofing system comprises an error-proofing gas circuit, a leakage sensor and a control center, wherein the leakage sensor is used for detecting the tightness of the error-proofing gas circuit, the control center is connected with the leakage sensor, the control center detects the tightness of the error-proofing gas circuit through the leakage sensor, and the error-proofing gas circuit comprises a first gas circuit grid and a second gas circuit grid which are respectively arranged in the first workbench and the second workbench;

the press-fitting equipment comprises a press-fitting main body, a pin and a mistake-proofing pointer, wherein the pin is arranged on the press-fitting main body, and the mistake-proofing pointer is positioned below the pin.

2. The machining center of a camshaft bracket of an automobile engine according to claim 1, characterized in that: the first clamping assembly comprises a plurality of first positioning pin seats, first positioning pins assembled on the first positioning pin seats and a first pressing piece used for pressing the camshaft support;

the first pressing piece comprises a first pressing rod and a first air cylinder for controlling the first pressing rod, the camshaft support is fixed with the two first positioning pins through the first pressing rod, and the first air cylinder adjusts pressure on the camshaft support through the first pressing rod.

3. The machining center of a camshaft bracket of an automobile engine according to claim 2, characterized in that: first workstation still is provided with the lower diaphragm of fixing on the machining center workstation, connects a plurality of stands of processing diaphragm and lower diaphragm, down the diaphragm with processing diaphragm parallel arrangement, first cylinder sets up processing diaphragm and down between the diaphragm.

4. The machining center of a camshaft bracket of an automobile engine according to claim 2, characterized in that: the first air passage grid comprises a first transverse through hole penetrating through the processing transverse plate along the X-axis direction, a plurality of first air passage holes and a first through hole communicating the first transverse through hole and the first air passage holes, and the first through hole corresponds to the two first air passage holes;

one end of the first transverse through hole is provided with a first interface, the first interface is connected with the leakage sensor, and one end far away from the first interface is plugged through a plugging piece.

5. The machining center of a camshaft bracket of an automobile engine according to claim 4, characterized in that: the first positioning pin base is provided with two first detection holes, and the first transverse through hole, the first air path hole, the first through hole and the first detection hole form an L1 air path channel.

6. The machining center of a camshaft bracket of an automobile engine according to claim 1, characterized in that: the second clamping assembly comprises a plurality of second positioning pin seats, second positioning pins assembled on the second positioning pin seats and second pressing pieces used for fixing the camshaft support;

the second pressing piece comprises a second pressing rod and a second air cylinder for controlling the second pressing rod, the camshaft support is fixed with the two second positioning pins through the two second pressing rods, and the second air cylinder adjusts the pressure on the camshaft support through the second pressing rod.

7. The machining center of a camshaft bracket of an automobile engine according to claim 6, characterized in that: the second air path grid comprises a second transverse through hole penetrating through the processing transverse plate along the X-axis direction, a plurality of second air path holes and second through holes communicating the second transverse through hole and the second air path holes, and the second through holes correspond to the second air path holes one to one;

and one end of the second transverse through hole is provided with a second interface, the second interface is connected with the leakage sensor, and one end far away from the second interface is plugged by a plugging piece.

8. The machining center of a camshaft bracket of an automobile engine according to claim 7, characterized in that: the second positioning pin seat is provided with two second detection holes, and the second transverse through hole, the second air path hole, the second through hole and the second detection hole form an L2 air path channel.

9. The machining center of a camshaft support of an automobile engine according to claim 1, characterized in that: the mistake-proofing system also comprises an air source for supplying air to the mistake-proofing air circuit, and the air source is communicated with the mistake-proofing air circuit;

and the air source is communicated with the leakage sensor to form an L4 air path channel.

10. A method for manufacturing a camshaft support of an automobile engine, which is applied to a machining center of the camshaft support of the automobile engine according to any one of claims 1 to 9; the camshaft support comprises an abutting surface, a large combination plane deviating from the abutting surface, a shaft hole matched with the camshaft, shaft hole end faces arranged at two ends of the shaft hole and two phi 9 pin holes.

The method comprises the following steps:

s1, processing a camshaft support to be processed in a first processing direction;

s1.1, a large combination plane of a camshaft support to be machined is upwards clamped on a first clamping assembly, two phi 9 pin holes serve as coarse positioning holes, and an abutting surface serves as a coarse positioning surface;

s1.2, checking the airtightness of the first gas path grid through a leakage sensor;

s1.3, drilling and reaming a phi 9 pin hole;

s1.4, roughly and finely milling a large combination plane;

step S1.5, cleaning a camshaft support;

s2, processing the camshaft support processed in the first processing direction in the second processing direction;

s2.1, clamping the end face of a shaft hole of the camshaft support processed in the first processing direction upwards on a second clamping assembly, wherein two phi 9 pin holes are used as fine positioning holes, and a large combination plane is used as a fine positioning plane;

s2.2, checking the tightness of the second gas path grid through a leakage sensor;

s2.3, roughly and finely milling the end face of the shaft hole;

step S2.4, cleaning the camshaft support;

s3, pressing two phi 9 pins on the camshaft support;

s4, carrying out full inspection;

and S5, packaging.

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