Clamping device for machining engine cylinder block blank

Abstract

The invention provides a clamping device for machining an engine cylinder block blank, and belongs to the field of machining of the engine cylinder block blank, the clamping device comprises a machining table, and a clamping unit for clamping the engine cylinder block blank is arranged above the machining table. According to the clamping unit, the bottom of the engine cylinder block blank can be stably supported and clamped through cooperation between the bottom clamping assembly and the crankshaft supporting groove, and the interior of the engine cylinder block blank can be stably and reliably internally clamped through cooperation between the internal clamping assembly and the air cylinder hole channel; the engine cylinder block blank can be effectively prevented from vibrating or shaking in the machining process, it is guaranteed that the engine cylinder block blank does not move or rotate in the machining process, the stability of the engine cylinder block blank is further improved, meanwhile, the engine cylinder block blank can be accurately positioned on a machining table, the machining size and shape precision is guaranteed, and the machining efficiency is improved. And the processing quality and the processing efficiency of the engine cylinder block blank can be improved.

Description

Technical Field

[0001] The invention relates to the field of engine cylinder block blank processing, in particular to a clamping device used for engine cylinder block blank processing. Background Art

[0002] An engine is a device that converts the energy of fuel into mechanical energy. It is widely used in automobiles, railways, agricultural machinery, garden machinery and other fields. The engine block is an important part of the engine. It not only supports moving parts such as pistons and connecting rods, but also accommodates coolant and lubricating oil systems. The engine block blank refers to the initial form of the engine block during the manufacturing process. It is usually manufactured by casting. The manufactured blank usually has the basic shape and structure of the crankcase, crankshaft support groove, cylinder hole, oil channel and other parts. In order to make the cylinder block blank into a finished product with precise size, good surface finish and meet the engineering design requirements, it needs to be processed by a series of processes such as rough machining, drilling, and grinding.

[0003] However, there are still the following problems in the process of machining the engine cylinder blank:

[0004] (1) The shape of the engine block blank is relatively complex, and the clamping force acting on it is not easy to maintain a stable and effective state. In addition, it is easily affected by the force during processing and moves or rotates, resulting in reduced processing accuracy, processing quality and processing efficiency.

[0005] (2) In order to process all surfaces of the engine block blank, it is necessary not only to frequently change the orientation and position of the engine block blank, but also to change different clamping tools to clamp it. The time spent on clamping, disassembly and repositioning is relatively long. The overall processing efficiency cannot be guaranteed, and the consistency of processing quality of different engine block blanks needs to be improved.

[0006] Therefore, in order to solve the problems existing in the processing of the engine cylinder block blank, the present invention provides a clamping device for processing the engine cylinder block blank. Summary of the invention

[0007] The present invention provides a clamping device for machining an engine cylinder block blank, comprising a machining table, wherein a clamping unit for clamping the engine cylinder block blank is arranged above the machining table; the clamping unit comprises a bottom clamping assembly, wherein the bottom clamping assembly comprises a shaped plate installed at the upper end of the machining table, wherein the upper end of the horizontal section of the shaped plate is provided with two groups of side clamping members distributed on the left and right, wherein the side clamping members comprise a convex plate matched with a crankshaft supporting groove of the engine cylinder block blank, wherein two side clamping plates distributed front and back are slidably mounted at the lower end of the convex plate, wherein a moving member for controlling the synchronous reverse movement of the front and rear side clamping plates is arranged below the convex plate, and a control member for controlling the synchronous reverse movement of the two groups of side clamping members is arranged on the shaped plate ; The clamping unit also includes an internal clamping assembly, which includes an inverted shaped frame arranged above the bottom clamping assembly, a horizontal plate is arranged between the left and right vertical sections of the inverted shaped frame, and a plurality of groups of internal clamping members evenly arranged on the left and right are arranged at the lower end of the horizontal plate, and the internal clamping members include a push rod arranged at the lower end of the horizontal plate, and a plurality of arc-shaped clamping plates evenly arranged in the circumferential direction are arranged on the outer side of the lower end of the push rod, a fixed circular plate slidably connected to the lower end of the arc-shaped clamping plate is arranged below the push rod, a connecting member is connected between the arc-shaped clamping plate and the push rod, a driving member for driving the arc-shaped clamping plates in different internal clamping members to move outward synchronously is arranged on the inverted shaped frame, and a rotating assembly for driving the internal clamping assembly to rotate is arranged at the upper end of the processing table.

[0008] In one possible implementation, the movable member includes a movable plate arranged below the convex plate, two support plates distributed on the left and right are connected between the movable plate and the corresponding convex plate, a turntable is rotatably installed on the middle part of the upper end of the movable plate, and the front and rear eccentric parts of the upper end surface of the turntable are hinged with connecting rods hinged to the middle part of the lower end of the corresponding side clamp.

[0009] In a possible implementation, a sliding groove is provided at the upper ends of the two movable plates on the left and right sides that are away from each other, a guide groove plate is installed at the upper end of the outer ring surface of the turntable, a connecting block that is slidably connected to the guide groove plate is hinged on the side of the guide groove plate close to the sliding groove, an auxiliary block located on the rear side of the turntable is installed at the upper end of the movable plate, a spring telescopic column is connected to the connecting block and the auxiliary block on the side close to the sliding groove, and the fixed sections of the front and rear spring telescopic columns are installed on the sliding plate that is slidably connected to the sliding groove left and right.

[0010] In a possible implementation, alignment columns are installed on the adjacent sides of the left and right convex plates, a cross protrusion is installed on the right end of the alignment column on the left, and a cross groove matching the cross protrusion is opened on the left end of the alignment column on the right.

[0011] In one possible implementation, the control component includes a bidirectional screw rotatably installed between the left and right vertical sections of the C-shaped plate, a control plate is installed at the lower ends of the left and right sliding plates, which slides left and right through the moving plate and is threadedly connected to the bidirectional screw, a support plate is installed at the middle of the lower end of the moving plate, which is slidably connected to the bidirectional screw, the control plate and the support plate are both slidably connected to the horizontal section of the C-shaped plate, and the right end of the bidirectional screw rotates through the vertical section of the C-shaped plate and is connected to the output shaft of a motor installed on the upper end of the processing table.

[0012] In one possible implementation, the connecting member includes two connecting rods distributed up and down and hinged to the inner side of the arc surface. Fixed grooves are provided on the outer ring surface of the push rod at positions corresponding to the connecting rods, and the other end of the connecting rod is hinged in the fixed groove.

[0013] In one possible implementation, the push rods are connected to the corresponding fixed circular plates via elastic telescopic rods, the driving member comprises vertical guide rails installed on the sides adjacent to the left and right vertical sections of the inverted frame, and electric sliders slidably connected to the vertical guide rails are installed on both ends of the horizontal plate.

[0014] In one possible implementation, a rectangular block is installed at the lower end of the fixed circular plate, movable slots are opened on the left and right sides of the horizontal plate, automatic telescopic rods are installed at the upper ends of the leftmost and rightmost push rods, and push blocks connected to the movable slots for left and right sliding are installed at the upper ends of the automatic telescopic rods. The remaining push rods are fixedly installed at the lower end of the horizontal plate, and a bidirectional electric telescopic rod installed on the upper end of the horizontal plate is connected between the left and right push blocks.

[0015] In one possible implementation, the rotating assembly includes an outer gear ring installed at the left end of the left vertical section of the inverted frame, the outer gear ring is rotatably installed at the right end of the vertical plate, a rotating gear is meshed on the front side of the outer gear ring, and the rotating gear is connected to the output shaft of motor 2 installed at the upper end of the processing table.

[0016] In a possible implementation, an arc block is installed at the right end of the right vertical section of the inverted profile frame, a support frame is installed at the upper left end of the processing table, and a guide limit groove is provided on the side of the support frame close to the inverted profile frame for sliding connection with the arc block.

[0017] Beneficial effects of the present invention:

[0018] 1. The clamping unit used in the present invention can not only stably support and clamp the bottom of the engine cylinder block blank through the cooperation between the bottom clamping component and the crankshaft support groove, but also firmly and reliably clamp the inside of the engine cylinder block blank through the cooperation between the internal clamping component and the cylinder channel, which can effectively prevent the engine cylinder block blank from vibrating or shaking during the processing, ensure that it will not be displaced or rotated during the processing, further improve the stability of the engine cylinder block blank, and at the same time accurately position the engine cylinder block blank on the processing table, ensure the accuracy of the processing size and shape, which is beneficial to improving the processing quality and efficiency of the engine cylinder block blank.

[0019] 2. The bottom clamping assembly used in the present invention can not only clamp and fix the bottom of the engine cylinder block blank, but also support the bottom of the engine cylinder block blank after it is turned over. The internal clamping assembly used in the present invention can not only clamp the engine cylinder block blank internally, but also clamp and support the engine cylinder block blank from the side after it is turned over. One mechanism has multiple uses, ensuring that the engine cylinder block blank can maintain a stable and firm state in different processing directions, so that the processing of multiple surfaces of the engine cylinder block blank can be completed in one clamping, and the engine cylinder block blank can be flexibly rotated to change the processing surface, reducing the time required for clamping, disassembly and repositioning as well as the accumulated position error caused by back and forth clamping, which is beneficial to improving the overall processing efficiency and the consistency of the processing quality of different engine cylinder block blanks.

[0020] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a clamping device for engine cylinder blank processing provided by an embodiment of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping unit of the present invention.

[0024] Figure 3It is a schematic diagram of the three-dimensional structure of the side clamping member of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the moving part of the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the inner clamping member of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the arc block and the guide limiting groove of the present invention.

[0028] In the figure: 1, processing table; 111, outer gear ring; 112, vertical plate; 113, rotating gear; 114, motor 2; 115, arc block; 116, support frame; 117, guide limit groove; 2, clamping unit; 21, shaped plate; 211, convex plate; 212, alignment column; 213, cross convex block; 214, cross groove; 215, side clamping plate; 216, moving plate; 217, support plate; 218, turntable; 219, connecting rod; 220, sliding groove; 221, guide groove plate; 22 3. Auxiliary block; 224. Spring telescopic column; 225. Sliding plate; 226. Bidirectional screw; 227. Control board; 228. Support plate; 229. Motor 1; 23. Inverted frame; 231. Horizontal plate; 232. Push rod; 233. Arc clamping plate; 234. Fixed circular plate; 235. Elastic telescopic rod; 236. Connecting rod; 237. Fixed groove; 238. Vertical guide rail; 239. Electric slider; 240. Rectangular block; 241. Automatic telescopic rod; 243. Bidirectional electric telescopic rod. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] See also Figure 1 A clamping device for processing an engine cylinder block blank comprises a processing table 1, a clamping unit 2 for clamping the engine cylinder block blank is arranged above the processing table 1, and a processing equipment for processing the engine cylinder block blank is arranged at the upper end of the processing table 1 (the figure does not show the mechanical arm required for the processing equipment during processing).

[0031] See also Figure 1-Figure 4The clamping unit 2 includes a bottom clamping assembly, which includes a shaped plate 21 installed on the upper end of the processing table 1. The upper end of the horizontal section of the shaped plate 21 is provided with two groups of side clamping members distributed on the left and right. The side clamping members include a convex plate 211 that matches the crankshaft supporting groove of the engine cylinder blank. A positioning column 212 is installed on the side close to the left and right convex plates 211. A cross protrusion 213 is installed on the right end of the left aligning column 212. A cross groove 214 that matches the cross protrusion 213 is opened on the left end of the right aligning column 212. Two side clamping plates 215 distributed front and back are slidably installed at the lower end of the convex plate 211. Elastic rubber pads are installed on the sides away from the front and rear side clamping plates 215. A moving member for controlling the synchronous reverse movement of the front and rear side clamping plates 215 is provided below the convex plate 211. A control member for controlling the synchronous reverse movement of the two groups of side clamping members is provided on the shaped plate 21.

[0032] See also Figure 2 , Figure 3 and Figure 4 The moving member includes a moving plate 216 arranged below the convex plate 211, and two supporting plates 217 distributed on the left and right are connected between the moving plate 216 and the corresponding convex plate 211. A turntable 218 is rotatably installed at the middle of the upper end of the moving plate 216. The front and rear eccentric positions of the upper end surface of the turntable 218 are both hinged with connecting rods 219 hinged with the middle of the lower end of the corresponding side clamping plate 215. The upper ends of the two moving plates 216 on the left and right sides away from each other are both provided with sliding grooves 220. The outer ring of the turntable 218 A guide groove plate 221 is installed at the front end, and a connecting block slidably connected to the guide groove plate 221 is hinged on the side of the guide groove plate 221 close to the sliding groove 220. An auxiliary block 223 located on the rear side of the turntable 218 is installed on the upper end of the movable plate 216. The connecting block and the auxiliary block 223 are both connected to the side of the sliding groove 220 close to the sliding groove 220 with a spring telescopic column 224, and the fixed sections of the front and rear two spring telescopic columns 224 are both installed on a sliding plate 225 slidably connected to the sliding groove 220 left and right.

[0033] See also Figure 1 , Figure 2 and Figure 3 The control member includes a bidirectional screw 226 rotatably installed between the left and right vertical sections of the C-shaped plate 21, and a control plate 227 is installed at the lower ends of the left and right sliding plates 225, which slides left and right through the moving plate 216 and is threadedly connected to the bidirectional screw 226. A support plate 228 is installed in the middle of the lower end of the moving plate 216 and is connected to the bidirectional screw 226 for sliding left and right. The control plate 227 and the support plate 228 are both connected to the horizontal section of the C-shaped plate 21 for sliding left and right. The right end of the bidirectional screw 226 rotates through the vertical section of the C-shaped plate 21 and is connected to the output shaft of a motor 229 installed on the upper end of the processing table 1.

[0034] During operation: when it is necessary to process the upper end surface, front and rear side surfaces and left and right side surfaces of the engine cylinder block blank, the engine cylinder block blank can be first placed above the bottom clamping assembly manually or with existing equipment, and the cylinder hole of the engine cylinder block blank is facing upward and the crankshaft support groove is facing downward. This process requires the engine cylinder block blank to be fixed and supported. Then, the bidirectional screw 226 can be driven to rotate by the motor 229, and the control plates 227 on the left and right sides move synchronously along the horizontal section of the C-shaped plate 21 and the corresponding movable plate 216 with the rotation of the bidirectional screw 226. The control plate 227 drives the corresponding movable plate 216 and the support plate 228 to move synchronously along the bidirectional screw 226 and the horizontal section of the C-shaped plate 21 through the cooperation between the sliding plate 225, the spring telescopic column 224 located on the rear side and the auxiliary block 223, thereby realizing the synchronous movement of the left and right sets of side clamps toward each other.

[0035] During the movement of the side clamping member, the moving plate 216 drives the convex plate 211 to move synchronously toward the direction of the engine cylinder block blank through the support plate 217, and the convex plate 211 gradually enters the crankshaft support groove at the lower end of the engine cylinder block blank. The bottom of the engine cylinder block blank can be supported and limited by the cooperation between the convex plate 211 and the crankshaft support groove. In addition, the spring telescopic column 224, the connecting block, the guide groove plate 221, the rotating disk 218, the connecting rod 219, the side clamping plate 215 and the alignment column 212 located on the front side all move synchronously with the corresponding moving plate 216 and the convex plate 211. As the left and right convex plates 211 continue to move toward each other, the left and right alignment posts 212 gradually press against each other, and the cross protrusion 213 at the right end of the left alignment post 212 gradually inserts into the cross groove 214 at the left end of the right alignment post 212. The cooperation between the cross protrusion 213 and the cross groove 214 can improve the connection between the left and right alignment posts 212, which is beneficial to increase the overall relative stability between the left and right groups of side clamps. At this time, the left and right groups of side clamps can no longer move toward each other, and the left and right side convex plates 211 and the side clamps 215 are completely inserted into the crankshaft support grooves.

[0036] After the left and right side clamping parts are pressed against each other, the left and right control plates 227 can continue to be driven to move synchronously toward each other through the bidirectional screw 226. Since the movable plate 216 is in a fixed state at this time, the control plate 227 can continue to drive and compress the corresponding spring telescopic column 224 through the sliding plate 225 to make it move synchronously along the sliding groove 220. The spring telescopic column 224 on the rear side gradually shrinks through the cooperation between it and the auxiliary block 223. The spring telescopic column 224 on the front side can push the turntable 218 to rotate through the cooperation between the connecting block and the guide groove plate 221. When the turntable 218 rotates, it drives the connecting rods 219 on the front and rear sides to move synchronously. The front and rear side clamping plates 215 move with the corresponding connecting rods 219. It moves synchronously in the opposite direction along the lower end surface of the protruding plate 211 until the side clamping plate 215 presses against the side wall of the crankshaft supporting groove through the corresponding elastic rubber pad. At this time, the spring expansion column 224 on the front and rear sides is in a compressed state. It should be noted that the spring expansion column 224 has a large stiffness coefficient. The use of elastic rubber pads is beneficial to increase the friction between the side clamping plate 215 and the side wall of the crankshaft supporting groove, thereby improving the clamping stability. The front and rear side clamping plates 215 apply a pressing force to the front and rear inner walls of the crankshaft supporting groove to firmly fix the engine cylinder block blank between the upper ends of the left and right protruding plates 211, thereby completing the firm fixation of the bottom of the engine cylinder block blank, and then the existing equipment or manual support for the engine cylinder block blank can be released.

[0037] See also Figure 1 , Figure 2 and Figure 5 The clamping unit 2 also includes an internal clamping assembly, which includes an inverted frame 23 arranged above the bottom clamping assembly, a horizontal plate 231 is arranged between the left and right vertical sections of the inverted frame 23, and a plurality of groups of internal clamping members evenly arranged on the left and right are arranged at the lower end of the horizontal plate 231. The internal clamping members include a push rod 232 arranged at the lower end of the horizontal plate 231, and a plurality of arc-shaped clamping plates 233 evenly arranged in the circumferential direction are arranged on the outer side of the lower end of the push rod 232. The outer annular surface of the arc-shaped clamping plate 233 is installed with an elastic rubber pad, and the push rod 232 is provided with a plurality of arc-shaped clamping plates 233. A fixed circular plate 234 is provided below the rod 232 and is slidably connected to the lower end of the arc-shaped clamping plate 233. An elastic telescopic rod 235 is connected between the push rod 232 and the fixed circular plate 234. A connecting piece is connected between the arc-shaped clamping plate 233 and the push rod 232. The connecting piece includes two connecting rods 236 distributed up and down and hinged to the inner side of the arc-shaped surface. Fixed grooves 237 are provided at positions on the outer ring surface of the push rod 232 corresponding to the connecting rod 236, and the other end of the connecting rod 236 is hinged in the fixed groove 237.

[0038] See also Figure 1 , Figure 2 and Figure 5The inverted frame 23 is provided with a driving member for driving the arc-shaped clamping plates 233 in different inner clamping members to move outward synchronously. The driving member includes vertical guide rails 238 installed on the sides close to the left and right vertical sections of the inverted frame 23, and electric sliders 239 slidably connected to the vertical guide rails 238 are installed on both ends of the left and right sides of the cross plate 231. Rectangular blocks 240 are installed on the lower ends of the fixed circular plates 234. Moving grooves are opened on the left and right sides of the cross plate 231. Automatic telescopic rods 241 are installed on the upper ends of the leftmost and rightmost push rods 232. Push blocks slidably connected to the moving grooves are installed on the upper ends of the automatic telescopic rods 241. The remaining push rods 232 are fixedly installed at the lower end of the cross plate 231, and a bidirectional electric telescopic rod 243 installed on the upper end of the cross plate 231 is connected between the left and right push blocks.

[0039] During operation: after the bottom of the engine block blank is fixed, the electric sliders 239 on the left and right sides can simultaneously drive the cross plate 231 to move downward along the corresponding vertical guide rails 238, and the cross plate 231 drives multiple groups of inner clamps evenly arranged on the left and right to move downward synchronously until the multiple groups of inner clamps simultaneously enter the cylinder channel at the upper end of the engine block blank. In this process, the push rod 232 drives the fixed circular plate 234 and the rectangular block 240 to move downward through the elastic telescopic rod 235 until the rectangular block 240 contacts the bottom wall of the cylinder channel, and the arc-shaped clamping plate 233 moves downward synchronously with the push rod 232 through the corresponding connecting rod 236, and at this time, the arc-shaped clamping plate 233 They are all in a position close to the push rod 232. After the rectangular block 240 hits the bottom wall of the cylinder channel, the cross plate 231 can continue to move downward, and the push rod 232 moves downward synchronously and gradually presses down the elastic telescopic rod 235 to put it in a contracted state. In this process, the push rod 232 can drive the connecting rod 236 to move downward synchronously, and the arc-shaped clamping plate 233 moves outward along the fixed circular plate 234 synchronously with the downward movement of the corresponding connecting rod 236, until the circumferentially arranged arc-shaped clamping plates 233 are simultaneously pressed against the inner wall of the cylinder channel through the corresponding elastic rubber pads, and the multiple groups of inner clamping members arranged on the left and right synchronously clamp and fix the engine cylinder block blank from the inside of the corresponding cylinder channel.

[0040] By using the bottom clamping assembly and the internal clamping assembly to clamp and fix the bottom and the inside of the engine cylinder block blank in the same stable and reliable manner, it can not only effectively prevent the vibration or movement of the engine cylinder block blank during the processing, ensure that it will not be displaced or rotated during the processing, and further improve the stability of the engine cylinder block blank, but also accurately position the engine cylinder block blank on the processing table 1, increase the accuracy of the processing size and shape, and help improve the processing quality and efficiency of the engine cylinder block blank. After the engine cylinder block blank is fixed, the existing processing equipment can use a mechanical arm to perform a series of processing such as drilling and grinding on the upper surface, front and rear sides, and left and right sides of the engine cylinder block blank, and there is sufficient operating space required for mechanical arm processing on the left and right sides, front and rear sides, and the top of the engine cylinder block blank.

[0041] See also Figure 1 and Figure 6 A rotating assembly for driving the internal clamping assembly to rotate is provided at the upper end of the processing table 1, and the rotating assembly includes an outer gear ring 111 installed at the left end of the left vertical section of the inverted frame 23, and the outer gear ring 111 is rotatably installed at the right end of the vertical plate 112. A rotating gear 113 is meshed with the front side of the outer gear ring 111, and the rotating gear 113 is connected to the output shaft of the motor 2 114 installed at the upper end of the processing table 1. An arc block 115 is installed at the right end of the right vertical section of the inverted frame 23, and a support frame 116 is installed at the upper left end of the processing table 1. A guide limiting groove 117 slidably connected to the arc block 115 is opened on the side of the support frame 116 close to the inverted frame 23.

[0042] See also Figure 1-Figure 6During operation: when the cylinder channel of the engine cylinder blank needs to be processed, the bottom clamping assembly is kept clamping the bottom of the engine cylinder blank, and then the electric sliders 239 on the left and right sides can be used to drive the cross plate 231 to move up and reset, and the cross plate 231 drives the multiple groups of inner clamping parts arranged on the left and right to move up and reset synchronously. In this process, the push rod 232 drives the corresponding arc clamping plate 233 to move along the fixed circular plate 234 away from the inner wall of the cylinder channel through the connecting rod 236, and the elastic telescopic rod 235 naturally extends. The fixed circular plate 234 and the rectangular block 240 move up synchronously with the push rod 232 through the elastic telescopic rod 235 until the multiple groups of inner clamping parts move up synchronously to the upper end surface away from the engine cylinder blank, and then the motor 2 114 can be used to drive the rotating gear 113 to rotate clockwise, and the rotating The gear 113 drives the outer gear ring 111 to rotate counterclockwise around the right end of the vertical plate 112 synchronously, and the outer gear ring 111 drives the inverted frame 23 to rotate counterclockwise synchronously. The arc block 115 at the right end of the vertical section on the right side of the inverted frame 23 can rotate synchronously along the guide limit groove 117 on the support frame 116 until the inverted frame 23 drives the internal clamping assembly to rotate counterclockwise to the rear side of the engine cylinder block blank, so that the cylinder channel of the engine cylinder block blank is completely exposed. Through the cooperation between the support frame 116, the arc block 115 and the guide limit groove 117, the rotation of the inverted frame 23 can be supported and guided to increase the stability of the internal clamping assembly during rotation, and the rotation of the inverted frame 23 can be limited to ensure that the inverted frame 23 and the internal clamping assembly can rotate within a certain range.

[0043] After the internal clamping assembly rotates to the rear side of the engine cylinder blank, the push blocks on the left and right sides can be pushed to move synchronously along the corresponding moving grooves in the opposite direction through the two-way electric telescopic rod 243, and the push blocks drive the corresponding internal clamping parts to move synchronously away from the engine cylinder blank through the push rod 232. Then, the corresponding push rods 232 can be pushed forward by the automatic telescopic rods 241 on the left and right sides at the same time, and the leftmost and left and right inner clamping parts move synchronously with the corresponding push rods 232 to the side of the engine cylinder blank. At this time, the two-way electric telescopic rod 243 can be The push block and the automatic telescopic rod 241 drive the leftmost and rightmost inner clamping parts to move toward each other synchronously until the fixed circular plate 234 and the rectangular block 240 in the inner clamping parts are pressed against the corresponding side end faces of the engine cylinder block blank, and the left and right sides of the engine cylinder block blank are clamped and limited by the leftmost and left and right inner clamping parts to increase the support and fixing points of the engine cylinder block blank, thereby preventing the engine cylinder block blank from shaking left and right during cylinder bore processing and affecting the processing quality and processing accuracy of the cylinder bore. Subsequently, the existing equipment can process the cylinder bore through a robotic arm.

[0044] When it is necessary to process the lower end surface of the engine cylinder block and the crankshaft supporting groove, the internal clamping assembly can be kept clamping the engine cylinder block blank, and then the bidirectional screw 226 can be driven by the motor 229 to rotate in the opposite direction, and the side clamps 215 on the front and rear sides can be synchronously moved toward each other to be away from the side wall of the crankshaft supporting groove in the opposite manner as mentioned above, and then the left and right groups of side clamps can be synchronously moved in the opposite direction away from the engine cylinder block blank, and then, the inverted jig 23, the internal clamping assembly and the engine cylinder block blank can be rotated 90 degrees counterclockwise as a whole in the same manner as mentioned above, so that the crankshaft supporting groove of the engine cylinder block blank faces forward, so as to facilitate subsequent processing operations. The left and right side clamps are then driven by motor 229 to move the two-way screw 226 synchronously to the bottom of the engine cylinder block blank. At this time, the convex plates 211 on the left and right sides are just in contact with the downward side of the engine cylinder block blank. The left and right side clamps can support the bottom of the engine cylinder block blank, which helps to improve the balance stability of the engine cylinder block blank during processing and ensure that the engine cylinder block blank is stably placed on the processing table 1 with the crankshaft support groove facing forward. Then the existing equipment can process the lower end surface and the crankshaft support groove of the engine cylinder block blank through the mechanical arm.

[0045] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping device for machining an engine cylinder block blank, comprising a machining table (1), characterized in that: A clamping unit (2) for clamping the engine cylinder block blank is arranged above the processing table (1); The clamping unit (2) comprises a bottom clamping assembly, which comprises a shaped plate (21) mounted on the upper end of the processing table (1), two groups of side clamping members distributed on the left and right are arranged at the upper end of the horizontal section of the shaped plate (21), the side clamping members comprise a convex plate (211) matched with the crankshaft supporting groove of the engine cylinder block blank, two side clamping plates (215) distributed front and back are slidably mounted on the lower end of the convex plate (211), a moving member for controlling the synchronous reverse movement of the front and rear side clamping plates (215) is arranged below the convex plate (211), and a control member for controlling the synchronous reverse movement of the two groups of side clamping members is arranged on the shaped plate (21); The clamping unit (2) further comprises an internal clamping assembly, the internal clamping assembly comprising an inverted shaped frame (23) arranged above the bottom clamping assembly, a horizontal plate (231) being arranged between the left and right vertical sections of the inverted shaped frame (23), a plurality of groups of internal clamping members evenly arranged on the left and right sides being arranged at the lower end of the horizontal plate (231), the internal clamping members comprising a push rod (232) arranged at the lower end of the horizontal plate (231), a circumferentially evenly arranged outer side of the lower end of the push rod (232) being arranged A plurality of arc-shaped clamping plates (233) are provided below the push rod (232), a fixed circular plate (234) slidably connected to the lower end of the arc-shaped clamping plates (233) is provided, a connecting piece is connected between the arc-shaped clamping plates (233) and the push rod (232), a driving piece for driving the arc-shaped clamping plates (233) in different internal clamping pieces to move outward synchronously is provided on the inverted frame (23), and a rotating component for driving the internal clamping component to rotate is provided on the upper end of the processing table (1).

2. A clamping device for machining an engine cylinder blank according to claim 1, characterized in that: The moving member comprises a moving plate (216) arranged below the convex plate (211); two support plates (217) distributed on the left and right are connected between the moving plate (216) and the corresponding convex plate (211); a turntable (218) is rotatably mounted on the middle of the upper end of the moving plate (216); and connecting rods (219) are hingedly connected to the middle of the lower end of the corresponding side clamping plate (215) at the front and rear eccentric positions of the upper end surface of the turntable (218).

3. A clamping device for machining an engine cylinder blank according to claim 2, characterized in that: A sliding groove (220) is provided at the upper ends of the two movable plates (216) on the sides away from each other, a guide groove plate (221) is installed at the upper end of the outer annular surface of the turntable (218), a connecting block slidably connected to the guide groove plate (221) is hingedly connected to the side of the guide groove plate (221) close to the sliding groove (220), an auxiliary block (223) located at the rear side of the turntable (218) is installed at the upper end of the movable plate (216), and a spring telescopic column (224) is connected to the side of the connecting block and the auxiliary block (223) close to the sliding groove (220), and the fixed sections of the front and rear two spring telescopic columns (224) are installed on a sliding plate (225) slidably connected to the sliding groove (220) left and right.

4. A clamping device for machining an engine cylinder blank according to claim 1, characterized in that: A positioning column (212) is installed on the adjacent side of the left and right convex plates (211); a cross convex block (213) is installed on the right end of the positioning column (212) on the left; and a cross groove (214) matching with the cross convex block (213) is provided on the left end of the positioning column (212) on the right.

5. The clamping device for machining an engine cylinder blank according to claim 1, characterized in that: The control member comprises a bidirectional screw (226) rotatably mounted between the left and right vertical sections of the shaped plate (21); a control plate (227) is mounted at the lower ends of the left and right sliding plates (225) and penetrates the movable plate (216) and is threadedly connected to the bidirectional screw (226); a support plate (228) is mounted at the middle of the lower end of the movable plate (216) and is slidably connected to the bidirectional screw (226); the control plate (227) and the support plate (228) are both slidably connected to the horizontal section of the shaped plate (21); the right end of the bidirectional screw (226) is rotatably mounted to penetrate the vertical section of the shaped plate (21) and is connected to the output shaft of a motor 1 (229) mounted at the upper end of the processing table (1).

6. The clamping device for machining an engine cylinder blank according to claim 1, characterized in that: The connecting member comprises two connecting rods (236) which are distributed up and down and are both hinged to the inner side of the arc surface. The outer ring surface of the push rod (232) is provided with a fixing groove (237) at a position corresponding to the connecting rod (236). The other end of the connecting rod (236) is hinged in the fixing groove (237).

7. The clamping device for machining an engine cylinder blank according to claim 1, characterized in that: The push rods (232) are connected to the corresponding fixed circular plates (234) via elastic telescopic rods (235). The driving member comprises vertical guide rails (238) installed on the sides of the left and right vertical sections of the inverted frame (23), and electric sliders (239) slidably connected to the vertical guide rails (238) are installed on the left and right ends of the horizontal plate (231).

8. The clamping device for machining an engine cylinder blank according to claim 1, characterized in that: A rectangular block (240) is installed at the lower end of the fixed circular plate (234), a movable through slot is opened on both the left and right sides of the horizontal plate (231), and an automatic telescopic rod (241) is installed at the upper end of the leftmost and rightmost push rods (232). A push block connected to the movable through slot for left and right sliding is installed at the upper end of the automatic telescopic rod (241), and the remaining push rods (232) are fixedly installed at the lower end of the horizontal plate (231), and a bidirectional electric telescopic rod (243) installed at the upper end of the horizontal plate (231) is connected between the left and right push blocks.

9. The clamping device for machining an engine cylinder blank according to claim 1, characterized in that: The rotating assembly comprises an outer gear ring (111) mounted on the left end of the left vertical section of the inverted profile frame (23); the outer gear ring (111) is rotatably mounted on the right end of the vertical plate (112); a rotating gear (113) is meshed on the front side of the outer gear ring (111); and the rotating gear (113) is connected to the output shaft of a second motor (114) mounted on the upper end of the processing table (1).

10. The clamping device for machining an engine cylinder blank according to claim 1, characterized in that: An arc block (115) is installed at the right end of the right vertical section of the inverted profile frame (23), and a support frame (116) is installed at the upper left end of the processing table (1). A guide limit groove (117) slidably connected to the arc block (115) is provided on a side of the support frame (116) close to the inverted profile frame (23).

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