Rotating disc type engine connecting rod big and small hole machining device

Abstract

In order to solve the problems that in the prior art, an engine connecting rod big and small hole machining method is low in machining efficiency, material taking or discharging is difficult, clamping and positioning are difficult, and the like, the utility model provides a disc type engine connecting rod big and small hole machining device. The device comprises a rack, a turntable, a stabilizing mechanism, a clamping mechanism, a drilling combined drilling tool, an upper chamfering combined drilling tool and a lower chamfering combined drilling tool, the rack is of a rectangular frame structure; the turntable is disc-shaped, and is rotatably fixed at the geometric center of the working table plate by taking the disc-shaped center as an axis; more than three stabilizing mechanisms are circumferentially and uniformly distributed on the outer side of the edge of the turntable; the number of the clamping mechanisms is six, and the six clamping mechanisms correspond to six stations of loading, drilling, upper chamfering, lower chamfering, cleaning and unloading respectively. The drilling and chamfering machine has the advantages that drilling and chamfering can be conducted at the same time, and machining efficiency is improved; and the clamping mechanism with a mold pressing structure is adopted, so that clamping is accurate and stable, and loading or unloading is facilitated.

Description

Technical Field

[0001] The utility model relates to a technology for machining large and small holes of an engine connecting rod, in particular to a turntable type machining device for large and small holes of an engine connecting rod. Background Art

[0002] The engine connecting rod is the main component of the engine's torque transmission. Its basic shape is a spoon-shaped straight rod with a connecting through hole at each end. One through hole is rotatably connected to the bottom of the engine piston, and the other through hole is rotatably connected to the crankshaft of the engine crankshaft; thereby, the linear motion of the piston is converted into the circular motion of the crankshaft. Usually, the through hole connecting the crankshaft has a larger diameter, which is called the big end hole; the through hole connecting the piston has a smaller diameter, which is called the small end hole; the two are collectively called the engine connecting rod big and small holes (see attached). Figure 1 ). In order to ensure the effective connection between the engine connecting rod and the engine crankshaft and piston and reduce shaking or noise, there are high requirements for the dimensional accuracy, surface roughness and position accuracy of the large and small holes of the engine connecting rod, especially the consistency of the hole spacing between the large and small holes.

[0003] Usually, the blank of the engine connecting rod is processed by die forging. The large and small holes of the connecting rod blank after die forging are only a prototype. In fact, the small hole may only have a pit on each of the two end faces, and it is not yet through. Therefore, it is necessary to drill the large and small holes of the connecting rod and chamfer the two end faces of the processed through hole. In order to ensure the consistency of the hole spacing of the large and small holes of the engine connecting rod, a combination drill bit is usually used to process the large and small holes of the connecting rod, that is, after the connecting rod blank is clamped, the large and small holes are drilled at the same time. Then, the two end faces of the large and small holes are chamfered. Specifically, the prior art method for processing the large and small holes of the engine connecting rod is to clamp the connecting rod blank horizontally and vertically. At this time, the axes of the large and small holes of the connecting rod blank are arranged horizontally and side by side, and the axis of the combination drill bit is coaxial with the axis of the large and small holes of the connecting rod blank. The drilling combination drill bit feeds from the right side of the connecting rod blank (of course, it can also feed from the left side of the connecting rod blank) and drills the large and small holes of the connecting rod at the same time. After the drilling process is completed, the drilling combined drill bit is withdrawn; the combined chamfering drill bit on the left side of the connecting rod blank is advanced to chamfer the left end face of the connecting rod large and small holes. After the chamfering of the left end face is completed, the left chamfering combined drill bit is withdrawn. At this time, the right drilling combined drill bit has been replaced with the right chamfering combined drill bit; the right chamfering combined drill bit is advanced to chamfer the right end face of the connecting rod large and small holes. After the chamfering of the right end face is completed, the right chamfering combined drill bit is withdrawn. The clamping mechanism releases the connecting rod blank, and the machined engine connecting rod is taken away manually or by a manipulator, and the connecting rod blank is reloaded to start the processing of the next engine connecting rod. The prior art engine connecting rod large and small hole processing method performs three processes of drilling, chamfering the left end face, and chamfering the right end face at the same clamping position, during which three times of advancement and withdrawal are required, which seriously affects the processing efficiency. In addition, the connecting rod blank is clamped horizontally and vertically, which makes it difficult to take or put out materials, or clamp and position.

[0004] Obviously, the prior art engine connecting rod large and small hole processing methods have the problems of low processing efficiency, difficulty in taking or placing materials, and difficulty in clamping and positioning. Summary of the invention

[0005] In order to solve the problems of low processing efficiency, difficulty in taking or placing materials, and difficulty in clamping and positioning in the prior art engine connecting rod large and small hole processing methods, the utility model proposes a disc-type engine connecting rod large and small hole processing device.

[0006] The utility model discloses a disc-type engine connecting rod large and small hole processing device, comprising a frame, a turntable, a stabilizing mechanism, a clamping mechanism, a drilling combination drill, an upper chamfering combination drill and a lower chamfering combination drill; the frame is a rectangular frame structure, and a workbench is arranged just above the rectangular frame; the turntable is a disc, and can be rotatably fixed to the geometric center of the workbench with the center of the disc as the axis; a groove with a triangular cross-section shape is radially arranged on the edge of the turntable circumference; the stabilizing mechanism is more than three, and the circumference is evenly distributed on the outer side of the turntable edge; the clamping mechanism is six, and the circumference is evenly distributed and fixed on the upper surface of the turntable edge, and corresponds to the six workstations of loading, drilling, upper chamfering, lower chamfering, cleaning and unloading respectively; the drilling The combined drill tool is arranged on the work table of the drilling processing station outside the edge of the turntable, and its drill bit points from top to bottom to the top of the clamping mechanism fixed on the turntable, and the axis of the large and small combined drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; the upper chamfering combined drill tool is arranged on the work table of the upper chamfering station outside the edge of the turntable, and its drill bit points from top to bottom to the top of the clamping mechanism fixed on the turntable, and the axis of the large and small combined drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; the lower chamfering combined drill tool is arranged on the bottom surface of the work table of the lower chamfering station outside the edge of the turntable, and its drill bit points from bottom to top to the bottom of the clamping mechanism fixed on the turntable, and the axis of the large and small combined drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; wherein;

[0007] The stabilizing mechanism comprises a base, a support shaft, a roller and a spring; the base is a U-shaped structure, and through holes are arranged on the two end faces of the U structure; the support shaft is inserted into the through hole of the base, an annular step is arranged on the circumference of the support shaft inside the front through hole of the base, and a hinge seat is arranged at the front end of the support shaft; the roller is hinged at the front end of the support shaft, and the cross-sectional shape of the roller is semicircular; the spring is sleeved on the outer circle of the support shaft between the front and rear through holes of the base, and the front end of the spring is against the annular step of the support shaft, pushing the roller to press against the triangular groove on the circumferential edge of the turntable;

[0008] The clamping mechanism is a molded structure, including a base plate, a template, a support column, a dovetail groove I, an upper pressure plate, a push cylinder, a lower pressure plate and an ejection cylinder; the base plate and the template are both rectangular, and are fixedly connected to form a rectangular frame structure by a support column arranged between the base plate and the template; a mold hole is arranged in the middle front part of the template, and the shape and size of the mold hole match the shape of the connecting rod, and dovetail grooves I are arranged on both sides of the mold hole; the upper pressure plate is a rectangular plate, and dovetail seats I are arranged at both ends, and are inserted into the dovetail grooves I on the template; an upper mold cavity is arranged on the bottom surface of the upper pressure plate; the shape and size of the upper mold cavity match the shape of the connecting rod, and at the corresponding size holes of the connecting rod The position is provided with large and small through holes with a larger diameter than the connecting rod size hole; the pushing cylinder is fixed on the middle rear side of the template, and the end of its piston rod is connected to the middle of the rear end surface of the upper pressure plate, pushing the upper pressure plate to move back and forth in the dovetail groove I; the outer contour shape and size of the lower pressure plate match the shape of the connecting rod, and large and small through holes with a larger diameter than the connecting rod size hole are provided at the corresponding position of the connecting rod size hole; the thickness of the lower pressure plate is thicker than the template and is sleeved in the mold hole of the template, and a hinged seat is provided in the middle of the bottom surface of the lower pressure plate; the ejection cylinder piston is vertically fixed upward on the surface of the bottom plate, and the end of the piston is hinged to the bottom surface of the lower pressure plate, pushing the lower pressure plate to move up and down in the mold hole.

[0009] Furthermore, the structures of the drilling combination drill tool and the upper chamfering combination drill tool are the same, and the only difference is the angle and diameter of the drill head, including a base, a dovetail groove II, a dovetail seat II, a combination drill bit, a cylinder fixing plate and a feed cylinder; the base is L-shaped, the short side of the L-shaped base is fixed on the workbench, and the outer side of the long side of the L-shaped base is provided with a dovetail groove II; the dovetail seat II is a rectangular parallelepiped and is slidably inserted in the dovetail groove II; the combination drill bit is fixed on the back side of the dovetail seat II, and the axes of the large and small drill bits are coaxial with the axes of the large and small through holes of the clamping mechanism; the cylinder fixing plate is rectangular and fixed on the top of the long side of the L-shaped base; the feed cylinder piston is downwardly fixed on the upper surface of the cylinder fixing plate, and its piston end passes through the cylinder fixing plate and is fixedly connected to the upper end surface of the combination drill bit.

[0010] Furthermore, the lower chamfering combination drill tool is inverted and fixed as a whole on the bottom surface of the workbench at the lower chamfering station, including a support, a dovetail groove III, a dovetail seat III, a combination drill bit and a chamfering cylinder; the support is L-shaped, the short side of the L-shaped support is fixed on the bottom surface of the workbench, and a dovetail groove III is arranged on the outer side of the long side of the L-shaped base; the dovetail seat III is a rectangular parallelepiped and is slidably inserted in the dovetail groove III; the combination drill bit is fixed on the back side of the dovetail seat III, and the axes of the large and small drill bits are coaxial with the axes of the large and small through holes of the clamping mechanism; the chamfering cylinder piston is fixed downward on the upper surface of the workbench, and its piston end passes through the workbench and is fixedly connected to the upper end surface of the combination drill bit.

[0011] The beneficial technical effect of the disk-type engine connecting rod large and small hole processing device of the utility model is that it can perform drilling and chamfering processing at the same time, thereby improving processing efficiency; the clamping mechanism with a molded structure not only clamps accurately and firmly, but also facilitates loading or unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a three-dimensional schematic diagram of a common specification engine connecting rod;

[0013] Attached Figure 2 It is a three-dimensional schematic diagram of the utility model of the disc engine connecting rod large and small hole processing device;

[0014] Attached Figure 3 It is a three-dimensional schematic diagram of another angle of the disk-type engine connecting rod large and small hole processing device of the utility model;

[0015] Attached Figure 4 It is a three-dimensional schematic diagram of the clamping mechanism of the utility model;

[0016] Attached Figure 5 It is a three-dimensional schematic diagram of the clamping mechanism of the utility model from another angle;

[0017] Attached Figure 6 It is a three-dimensional schematic diagram of the clamping state of the clamping mechanism of the utility model;

[0018] Attached Figure 7 It is a three-dimensional schematic diagram of the drilling tool assembly of the utility model;

[0019] Attached Figure 8 It is a three-dimensional schematic diagram of the lower chamfering combined drilling tool of the utility model;

[0020] Attached Fig. 9 It is a partial three-dimensional schematic diagram of the lower chamfered combined drilling tool of the utility model from another angle.

[0021] The following is a further description of the disc engine connecting rod large and small hole processing device of the utility model in conjunction with the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0022] Attached Figure 2 This is a three-dimensional schematic diagram of the utility model of a disc engine connecting rod large and small hole processing device, attached Figure 3 This is a three-dimensional schematic diagram of another angle of the disk engine connecting rod hole processing device of the utility model, attached Figure 4 It is a three-dimensional schematic diagram of the clamping mechanism of the utility model, Figure 5 This is a three-dimensional schematic diagram of the clamping mechanism of the utility model from another angle, Figure 6It is a three-dimensional schematic diagram of the clamping state of the clamping mechanism of the utility model. In the figure, 1 is a frame, 2 is a turntable, 3 is a stabilizing mechanism, 3-1 is a base, 3-2 is a support shaft, 3-3 is a roller, 3-4 is a spring, 4 is a clamping mechanism, 4-1 is a bottom plate, 4-2 is a template, 4-3 is a support column, 4-4 dovetail groove I, 4-5 is an upper pressure plate, 4-6 is a push cylinder, 4-7 is a lower pressure plate, 4-8 is an ejection cylinder, 5 is a drilling combination drill, 6 is an upper chamfering combination drill, and 7 is a lower chamfering combination drill. As can be seen from the figure, the utility model of the disk-type engine connecting rod large and small hole processing device includes a frame 1, a turntable 2, a stabilizing mechanism 3, a clamping mechanism 4, a drilling combination drill 5, an upper chamfering combination drill 6 and a lower chamfering combination drill 7; the frame 1 is a rectangular frame structure, and a workbench is arranged just above the rectangular frame; the turntable 2 is a disc, and can be rotatably fixed to the geometric center of the workbench with the center of the disc as the axis; a groove with a triangular cross-section shape is radially arranged on the edge of the turntable circumference; the stabilizing mechanism 3 is more than three, and the circumference is evenly distributed on the outer side of the turntable edge; the clamping mechanism 4 is six, and the circumference is evenly distributed. The cloth is fixed on the upper surface of the edge of the turntable, and corresponds to the six stations of loading, drilling, upper chamfering, lower chamfering, cleaning and unloading respectively; the drilling combination 5 drilling tool is arranged on the workbench of the drilling processing station outside the edge of the turntable, and its drill bit points from top to bottom to the top of the clamping mechanism fixed on the turntable, and the axis of the large and small combined drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; the upper chamfering combination drilling tool 6 is arranged on the workbench of the upper chamfering station outside the edge of the turntable, and its drill bit points from top to bottom to the top of the clamping mechanism fixed on the turntable, and the axis of the large and small combined drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; the The lower chamfering combination drill 7 is arranged on the bottom surface of the workbench of the lower chamfering station outside the edge of the turntable, and its drill bit points from bottom to top to the bottom of the clamping mechanism fixed on the turntable, and the axis of the large and small combination drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; wherein; the stabilizing mechanism 3 includes a base 3-1, a support shaft 3-2, a roller 3-3 and a spring 3-4; the base 3-1 is a U-shaped structure, and through holes are arranged on the two end faces of the U structure; the support shaft 3-2 is inserted into the through hole of the base, and an annular step is arranged on the circumference of the support shaft on the inner side of the front through hole of the base, and an articulated seat is arranged on the front end head of the support shaft; the roller 3-3 is hinged The roller is connected to the front end of the support shaft, and the cross-sectional shape of the roller is semicircular; the spring 3-4 is sleeved on the outer circle of the support shaft between the front and rear through holes of the base, and the front end of the spring is against the annular step of the support shaft, pushing the roller to press against the triangular groove on the circumferential edge of the turntable; the clamping mechanism 4 is a molded structure, including a bottom plate 4-1, a template 4-2, a support column 4-3, a dovetail groove I 4-4, an upper pressure plate 4-5, a push cylinder 4-6, a lower pressure plate 4-7 and an ejection cylinder 4-8; the bottom plate 4-1 and the template 4-2 are both rectangular, and are fixedly connected to form a rectangular frame structure through a support column 4-3 arranged between the bottom plate and the template;A die hole is provided in the middle front part of the template, and the shape and size of the die hole match the shape of the connecting rod, and dovetail grooves Ⅰ4-4 are provided on both sides of the die hole; the upper pressing plate 4-5 is a rectangular plate, and dovetail seats Ⅰ are provided at both ends, and are inserted into the dovetail grooves Ⅰ on the template; an upper die cavity is provided on the bottom surface of the upper pressing plate; the shape and size of the upper die cavity match the shape of the connecting rod, and large and small through holes with a diameter larger than that of the connecting rod are provided at the corresponding positions of the large and small holes of the connecting rod; the pushing cylinder 4-6 is fixed on the middle rear side of the template, and its piston rod end The head is connected to the middle of the rear end face of the upper pressure plate, pushing the upper pressure plate to move forward and backward in the dovetail groove Ⅰ; the outer contour shape and size of the lower pressure plate 4-7 match the shape of the connecting rod, and a large and small through hole with a larger diameter than the connecting rod large and small holes is provided at the corresponding position of the connecting rod large and small holes; the thickness of the lower pressure plate is thicker than the template and is sleeved in the mold hole of the template, and a hinge seat is provided in the middle of the bottom surface of the lower pressure plate; the piston of the ejection cylinder 4-8 is vertically fixed upward on the surface of the bottom plate, and the end of the piston is hinged on the bottom surface of the lower pressure plate, pushing the lower pressure plate to move up and down in the mold hole. The utility model of the disk engine connecting rod large and small hole processing device is provided with six stations of loading, drilling, upper chamfering, lower chamfering, cleaning and unloading, and each clamping mechanism is stopped and processed at each of the above-mentioned stations respectively through the rotation of the turntable, which effectively improves the processing efficiency. In order to prevent the turntable from shaking and deviating, more than three stabilizing mechanisms are evenly arranged on the outer side of the circumference of the turntable, so that the rollers of the stabilizing mechanisms are pressed against the triangular grooves on the circumferential edge of the turntable to limit the rotation of the turntable. The clamping mechanism of the disc-type connecting rod large and small hole drilling processing device of the utility model is a die pressing structure, which uses a die hole whose shape and size match the shape of the connecting rod to accommodate the connecting rod blank, and uses the upper pressing plate and the lower pressing plate to squeeze and fix the connecting rod blank, so that when the connecting rod blank is clamped, it is not only accurately positioned, but also very firmly clamped. During specific processing, at the loading station, the connecting rod blank is placed in the die hole of the clamping mechanism of the loading station by a robot or manually, and the push cylinder pushes the upper pressing plate to cover the die hole, and ensures that the upper die cavity on the bottom of the upper pressing plate is aligned with the die hole; at this time, the push cylinder pushes the lower pressing plate to move upward, pressing the connecting rod blank between the upper pressing plate and the lower pressing plate; the turntable rotates for the first time, the clamping mechanism rotates to the drilling processing station, and the drilling processing combined drilling tool drills the connecting rod blank; the turntable rotates for the second time, the clamping mechanism rotates to the drilling processing station, and the drilling processing combined drilling tool drills the connecting rod blank; The turntable rotates for the third time, and the clamping mechanism rotates to the upper chamfering station, and the upper chamfering combined drill tool performs upper chamfering on the connecting rod blank; the turntable rotates for the third time, and the clamping mechanism rotates to the lower chamfering station, and the lower chamfering combined drill tool performs lower chamfering on the connecting rod blank; the turntable rotates for the fourth time, and the clamping mechanism rotates to the cleaning station, and the air blowing nozzle or cleaning broom cleans the iron filings around the connecting rod blank; the turntable rotates for the fifth time, and the clamping mechanism rotates to the unloading station, and the robot or manual labor takes out the connecting rod blank, that is, the connecting rod blank is processed;The turntable rotates for the sixth time, and the clamping mechanism rotates to the loading station to start the next round of processing. In fact, the entire processing is carried out continuously. When the first connecting rod blank is being drilled, the second connecting rod blank is being loaded; when the first connecting rod blank is being chamfered, the second connecting rod blank is being drilled, and at the same time, the third connecting rod blank is being loaded; and so on, thus achieving continuous processing and improving processing efficiency. ;

[0023] Attached Figure 7 It is a three-dimensional schematic diagram of the utility model drilling tool assembly, in which 5-1 is a base, 5-2 is a dovetail groove II, 5-3 is a dovetail seat II, 5-4 is a combined drill bit, 5-5 is a cylinder fixing plate, and 5-6 is a feed cylinder. As can be seen from the figure, as one of the preferred schemes, the structure of the drilling combination drill tool and the upper chamfering combination drill tool is the same, the only difference is the angle and diameter of the drill head, including a base 5-1, a dovetail groove II 5-2, a dovetail seat II 5-3, a combination drill bit 5-4, a cylinder fixing plate 5-5 and a feed cylinder 5-6; the base 5-1 is L-shaped, the short side of the L-shaped base is fixed on the workbench, and the outer side of the long side of the L-shaped base is provided with a dovetail groove II 5-2; the dovetail seat II 5-3 is a rectangular parallelepiped and slidably inserted in the dovetail groove II; the combination drill bit 5-4 is fixed on the back of the dovetail seat II, and the axes of the large and small drill bits are coaxial with the axes of the large and small through holes of the clamping mechanism; the cylinder fixing plate 5-5 is rectangular and fixed on the top of the long side of the L-shaped base; the piston of the feed cylinder 5-6 is fixed downward on the upper surface of the cylinder fixing plate, and its piston end passes through the cylinder fixing plate and is fixedly connected to the upper end face of the combination drill bit. Obviously, the extension or retraction of the feed cylinder piston is the feed or retraction of the drill. For drilling, the diameter of the drill should be the same as the designed hole diameter, and the angle of the drill head should be sharper to facilitate drilling. For chamfering, the diameter of the drill should be larger than the designed hole diameter, and the angle of the drill head should be gentler to facilitate chamfering the edge of the through hole after drilling.

[0024] Attached Figure 8 This is a three-dimensional schematic diagram of the utility model of the lower chamfering combined drilling tool, attached Fig. 9It is a partial three-dimensional schematic diagram of the lower chamfering combined drill tool of the utility model from another angle. In the figure, 1 is a frame, 2 is a turntable, 3 is a stabilizing mechanism, 7-1 is a support, 7-2 is a dovetail groove III, 7-3 is a dovetail seat III, 7-4 is a combined drill bit, and 7-5 is a chamfering cylinder. As can be seen from the figure, as one of the preferred schemes, the lower chamfering combination drill tool is inverted and fixed as a whole on the bottom surface of the workbench at the lower chamfering station, including a support 7-1, a dovetail groove III 7-2, a dovetail seat III 7-3, a combination drill bit 7-4 and a chamfering cylinder 7-5; the support 7-1 is L-shaped, the short side of the L-shaped support is fixed on the bottom surface of the workbench, and a dovetail groove III 7-2 is arranged on the outer side of the long side of the L-shaped base; the dovetail seat III 7-3 is a rectangular parallelepiped and is slidably inserted in the dovetail groove III; the combination drill bit 7-4 is fixed on the back side of the dovetail seat III, and the axes of the large and small drill bits are coaxial with the axes of the large and small through holes of the clamping mechanism; the piston of the chamfering cylinder 7-5 is fixed downward on the upper surface of the workbench, and its piston end passes through the workbench and is fixedly connected to the upper end surface of the combination drill bit. Because it is a lower chamfer, the chamfering drill bit needs to perform the chamfering process from bottom to top. Therefore, the lower chamfering combination drill is inverted as a whole. The combination drill bit needs to pass through the workbench and enter the through hole of the lower pressure plate of the clamping mechanism, and then chamfer the lower end surface edge of the through hole of the connecting rod blank. Obviously, in order to allow the combination drill bit to pass through the workbench, a through hole is set at the corresponding position of the workbench. In order to prevent the combination drill bit from affecting the rotation of the turntable, when the lower chamfering process is not performed, the combination drill bit of the lower chamfering combination drill extends out of the height of the workbench and is lower than the lower surface of the turntable.

[0025] Obviously, the beneficial technical effect of the disk-type engine connecting rod large and small hole processing device of the utility model is that it can perform drilling and chamfering processing at the same time, thereby improving processing efficiency; the clamping mechanism with a molded structure not only clamps accurately and firmly, but also facilitates loading or unloading.

Claims

1. A turntable engine connecting rod large and small hole processing device, characterized in that: The processing device, The machine comprises a frame, a turntable, a stabilizing mechanism, a clamping mechanism, a drilling assembly drill, an upper chamfering assembly drill and a lower chamfering assembly drill; the frame is a rectangular frame structure, and a workbench is arranged directly above the rectangular frame; the turntable is a disc, and can be rotatably fixed to the geometric center of the workbench with the center of the disc as the axis; a groove with a triangular cross-section is radially arranged on the edge of the circumference of the turntable; there are more than three stabilizing mechanisms, which are evenly distributed on the outer side of the edge of the turntable; there are six clamping mechanisms, which are evenly distributed and fixed on the upper surface of the edge of the turntable, and correspond to the six workstations of loading, drilling, upper chamfering, lower chamfering, cleaning and unloading respectively; the drilling assembly drill is arranged on the turntable On the workbench of the drilling processing station outside the edge of the disk, its drill bit points from top to bottom to the top of the clamping mechanism fixed on the turntable, and the axis of the large and small combination drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; the upper chamfering combination drill tool is arranged on the workbench of the upper chamfering station outside the edge of the turntable, and its drill bit points from top to bottom to the top of the clamping mechanism fixed on the turntable, and the axis of the large and small combination drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; the lower chamfering combination drill tool is arranged on the bottom surface of the workbench of the lower chamfering station outside the edge of the turntable, and its drill bit points from bottom to top to the bottom of the clamping mechanism fixed on the turntable, and the axis of the large and small combination drill bits is coaxial with the axis of the large and small through holes of the clamping mechanism; in; The stabilizing mechanism comprises a base, a support shaft, a roller and a spring; the base is a U-shaped structure, and through holes are arranged on the two end faces of the U structure; the support shaft is inserted into the through hole of the base, an annular step is arranged on the circumference of the support shaft inside the front through hole of the base, and a hinge seat is arranged at the front end of the support shaft; the roller is hinged at the front end of the support shaft, and the cross-sectional shape of the roller is semicircular; the spring is sleeved on the outer circle of the support shaft between the front and rear through holes of the base, and the front end of the spring is against the annular step of the support shaft, pushing the roller to press against the triangular groove on the circumferential edge of the turntable; The clamping mechanism is a molded structure, including a base plate, a template, a support column, a dovetail groove I, an upper pressure plate, a push cylinder, a lower pressure plate and an ejection cylinder; the base plate and the template are both rectangular, and are fixedly connected to form a rectangular frame structure by a support column arranged between the base plate and the template; a mold hole is arranged in the middle front part of the template, and the shape and size of the mold hole match the shape of the connecting rod, and dovetail grooves I are arranged on both sides of the mold hole; the upper pressure plate is a rectangular plate, and dovetail seats I are arranged at both ends, and are inserted into the dovetail grooves I on the template; an upper mold cavity is arranged on the bottom surface of the upper pressure plate; the shape and size of the upper mold cavity match the shape of the connecting rod, and at the corresponding size holes of the connecting rod The position is provided with large and small through holes with a larger diameter than the connecting rod size hole; the pushing cylinder is fixed on the middle rear side of the template, and the end of its piston rod is connected to the middle of the rear end surface of the upper pressure plate, pushing the upper pressure plate to move back and forth in the dovetail groove I; the outer contour shape and size of the lower pressure plate match the shape of the connecting rod, and large and small through holes with a larger diameter than the connecting rod size hole are provided at the corresponding position of the connecting rod size hole; the thickness of the lower pressure plate is thicker than the template and is sleeved in the mold hole of the template, and a hinged seat is provided in the middle of the bottom surface of the lower pressure plate; the ejection cylinder piston is vertically fixed upward on the surface of the bottom plate, and the end of the piston is hinged to the bottom surface of the lower pressure plate, pushing the lower pressure plate to move up and down in the mold hole.

2. The disc engine connecting rod large and small hole processing device according to claim 1 is characterized in that: The structures of the drilling combination drill tool and the upper chamfering combination drill tool are the same, and the only difference is the angle and diameter of the drill head, including a base, a dovetail groove II, a dovetail seat II, a combination drill bit, a cylinder fixing plate and a feed cylinder; the base is L-shaped, the short side of the L-shaped base is fixed on the workbench, and the outer side of the long side of the L-shaped base is provided with a dovetail groove II; the dovetail seat II is a rectangular parallelepiped and is slidably inserted in the dovetail groove II; the combination drill bit is fixed on the back side of the dovetail seat II, and the axes of the large and small drill bits are coaxial with the axes of the large and small through holes of the clamping mechanism; the cylinder fixing plate is rectangular and fixed on the top of the long side of the L-shaped base; the feed cylinder piston is fixed downward on the upper surface of the cylinder fixing plate, and its piston end passes through the cylinder fixing plate and is fixedly connected to the upper end surface of the combination drill bit.

3. The disc engine connecting rod large and small hole processing device according to claim 1 is characterized in that: The lower chamfering combination drill tool is inverted and fixed as a whole on the bottom surface of the workbench at the lower chamfering station, and includes a support, a dovetail groove III, a dovetail seat III, a combination drill bit and a chamfering cylinder; the support is L-shaped, the short side of the L-shaped support is fixed on the bottom surface of the workbench, and a dovetail groove III is arranged on the outer side of the long side of the L-shaped base; the dovetail seat III is a rectangular parallelepiped and is slidably inserted in the dovetail groove III; the combination drill bit is fixed on the back side of the dovetail seat III, and the axes of the large and small drill bits are coaxial with the axes of the large and small through holes of the clamping mechanism; the piston of the chamfering cylinder is fixed downward on the upper surface of the workbench, and its piston end passes through the workbench and is fixedly connected to the upper end surface of the combination drill bit.

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