Machining device for precise assembly of engine cylinder block

Abstract

The invention relates to the technical field of engine cylinder block assembly turning machining equipment, and particularly provides a machining device for a precise assembly of an engine cylinder block. Comprising a machining base, and two inner supporting assemblies used for jointly internally supporting and clamping the air cylinder sleeve are horizontally and oppositely installed on the machining base in a sliding mode; a turning mechanism is installed on the machining base in the same direction of the inner supporting assemblies in a horizontal sliding driving mode and located between the two inner supporting assemblies. According to the device provided by the invention, a multiple center guide structure with internal supporting and external clamping is adopted, continuous turning machining can be carried out on the outer wall and the two ends of the cylinder sleeve, on the basis of improving the turning stability, the turning precision is improved, and the turning quality and the subsequent use effect of the cylinder sleeve are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of turning processing equipment for engine cylinder block components, and specifically proposes a precision component processing device for an engine cylinder block. Background Art

[0002] The engine block is the main structural component of the engine, usually made of cast iron or aluminum alloy. The design and manufacture of the engine block directly affects the performance, reliability and life of the engine; the cylinder liner is a key component to ensure the performance and reliability of the engine block. The cylinder liner is a metal liner installed in the engine block to protect the engine block from wear and provide a smooth inner wall to ensure the normal operation of the piston and piston ring, and improve the durability and sealing of the engine block; the cylinder liner is generally manufactured by casting, and the cast cylinder liner needs to be rough-machined and fine-machined. Since the outer wall of the cylinder liner is closely matched with the engine block, the sealing and heat conduction properties must be ensured, so the precision requirements on the outer wall of the cylinder liner are very high, among which turning is the most important process in the processing of the outer wall of the cylinder liner.

[0003] When turning the outer wall of the cylinder liner of the engine block with precision, it is generally necessary to clamp the inner wall of the cylinder liner to avoid the outer wall of the cylinder liner and perform rotation turning. In the existing processing, two sets of large inner support chucks are basically used for inner support fixing. However, in actual processing, the following problems exist:

[0004] 1) The existing inner support chuck usually has multiple inner support claws, and there is a hard clamping contact between the inner support claws and the inner wall of the cylinder liner. The cylinder liner is a casting, and its inner wall will inevitably have the uneven quality defects of the casting, and the flatness quality of the inner wall of the cylinder liner is different, which is very random and contingent. Therefore, when the existing inner support chuck is used for inner support clamping, there will be a large random deviation error between the inner support clamping center and the actual center of the cylinder liner. When turning is completed, it will cause uneven wall thickness of the cylinder liner, which will have a great impact on the actual working quality of the engine block.

[0005] 2) The cylinder liner is usually a large cylindrical structure, that is, it has large radial and axial dimensions. During actual turning, only the two ends are clamped and driven for rotation. The turning stability is poor and it will also affect the turning accuracy. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an engine cylinder block precision component processing device, which is used to solve the problems mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a device for processing precision components of an engine cylinder block, comprising a processing base, on which two internal support assemblies for jointly supporting and clamping the cylinder liner are installed in a horizontally relatively sliding manner; a turning mechanism is installed on the processing base in a horizontally sliding manner in the same direction as the internal support assembly, and the turning mechanism is located between the two internal support assemblies.

[0008] The internal support assembly includes a swivel support installed on a processing base with a horizontal sliding drive, a swivel disk is installed on the swivel support with a horizontal rotation drive, an internal support frame is fixedly installed on the swivel disk, the internal support frame is equipped with a plurality of internal support modules distributed along the axial direction of the swivel disk, the internal support frame is also equipped with an internal support driving mechanism for synchronously driving the plurality of internal support modules to perform internal support clamping on the cylinder liner, the internal support module includes at least three internal support blocks distributed circumferentially around the central axis of the swivel disk, when the internal support module clamps the cylinder liner, the distances from at least three internal support blocks in the same internal support module to the central axis of the swivel disk are always equal.

[0009] The turning mechanism includes a sliding base driven horizontally to slide and installed on a machining base, the sliding base is equipped with a tool fixing table for fixing a turning tool, and the tool fixing table is driven to advance in the radial direction of a turntable; the sliding base is equipped with two groups of external clamping components that jointly perform adaptive clamping on the outer wall of a cylinder liner, the two groups of the external clamping components are distributed along the axial direction of the turntable, the tool fixing table is located between the two groups of the external clamping components, the number of the external clamping components in each group is two, and the two external clamping components in each group are symmetrically distributed on both sides of the central axis of the turntable in a direction horizontally perpendicular to the axial direction of the turntable.

[0010] Preferably, the inner support frame is equipped with an end chuck for elastically clamping the end of the cylinder liner; at least one top contact block is fixed on the sliding base, and when the turning mechanism moves toward one side of the inner support assembly, the top contact block touches the end chuck approaching one side, so that the end chuck is separated from the end of the cylinder liner.

[0011] Preferably, the inner support block is installed on the inner support frame in a radially sliding manner along the turntable; the inner support module also includes a plurality of double-headed telescopic rods which are alternately distributed, connected in series and hinged with at least three inner support blocks to form a closed loop, and the double-headed telescopic rod is fixedly equipped with an adaptive component which is elastically telescopic along the radial direction of the turntable at the center between the two ends; the inner support driving mechanism includes a plurality of driving plates which are arranged in a one-to-one correspondence with the plurality of double-headed telescopic rods in the same inner support module, and the driving plates are installed on the inner support frame in a radially driven manner along the turntable, and the plurality of adaptive components distributed in the axial direction of the turntable in the plurality of inner support modules are fixed together on the corresponding driving plates.

[0012] Preferably, when the end clamp is clamped with the end of the cylinder sleeve, the inner support block in the inner support module closest to the end clamp is completely located in the cylinder sleeve.

[0013] Preferably, the inner support driving mechanism also includes a driving shaft coaxially arranged with the turntable and horizontally rotatably mounted on the inner support frame; sliding plates are vertically arranged on the driving plate at both ends of the axial direction of the turntable, and the two sliding plates are slidably mounted on the inner support frame; two articulated joints corresponding to the two sliding plates are fixed on the driving shaft; connecting rods are correspondingly hinged between the articulated joints and the multiple sliding plates on the same side of the multiple driving plates.

[0014] Preferably, the double-head telescopic rod includes a central tube and two sliding rods relatively slidably mounted on both ends of the central tube, and the two sliding rods are hinged on two inner support blocks; the self-adaptive component is connected to the central tube.

[0015] Preferably, the sliding base is provided with two side support plates which are horizontally symmetrically distributed on both sides of the central axis of the turntable, and the two outer clamping components located on the same side of the central axis of the turntable are installed on the side support plates on the same side; the outer clamping components include an advance slider which is horizontally driven and slidably installed on the side bracket, and the advance slider is slidably installed with a plurality of sliding shafts which are arranged to slide in the same direction as the advance slider, and a roller frame is commonly fixed to the ends of the plurality of sliding shafts, an outer clamping spring is sleeved on the sliding shaft, and the two ends of the outer clamping spring are respectively fixed to the advance slider and the roller frame; two groups of outer clamping guide rollers are horizontally rotatably installed on the roller frame, and the two groups of outer clamping guide rollers are distributed on the upper and lower sides of the central axis of the turntable.

[0016] Preferably, the top contact block is provided with a cylindrical shaft whose axial direction is parallel to the axial direction of the rotating disk, and balls are movably embedded at both ends of the cylindrical shaft.

[0017] Preferably, the inner support frame includes a plurality of guide columns horizontally fixed on the turntable; the end clamping plate is slidably mounted on the plurality of guide columns; an end clamping spring is sleeved on the guide column, and both ends of the end clamping spring are respectively fixed on the turntable and the end clamping plate.

[0018] Preferably, the inner support frame also includes two bearing end plates, one of which is fixed to the ends of multiple guide columns; multiple No. 1 connecting plates corresponding to the multiple inner support blocks in the inner support module are horizontally fixed between the two bearing end plates, and the inner support blocks are slidably installed on the corresponding No. 1 connecting plates; multiple No. 2 connecting plates corresponding to the multiple drive plates are also horizontally fixed between the two bearing end plates, and the two sliding plates arranged on the drive plates are slidably installed on the No. 2 connecting plates at corresponding positions; the drive shaft is horizontally rotatably installed on the two bearing end plates.

[0019] The above technical scheme has the following advantages or beneficial effects: the present invention provides an engine cylinder block precision component processing device, which is provided with two inner support assemblies, and the inner support assembly is provided with a plurality of independent inner support modules that can synchronously drive and clamp the inner wall of the cylinder liner, thereby forming a plurality of inner support clamping contact points distributed circumferentially and having a common clamping center, improving the problem that the clamping center of the existing inner support chuck structure is deviated due to the uneven inner wall of the cylinder liner, resulting in uneven wall thickness of the cylinder liner after turning, improving the reliability and stability of the inner support clamping, and greatly reducing the deviation error between the inner support clamping center and the center of the cylinder liner itself; in addition, two groups of outer clamping components that move synchronously with the turning process and provide outer wall clamping for the cylinder liner are provided in cooperation, and a multiple center correction structure of internal support and external clamping is adopted, which improves the turning stability and further improves the concentricity of the turning; in summary, the device provided by the present invention can perform continuous turning processing on the outer wall and both ends of the cylinder liner, improves the turning accuracy on the basis of improving the turning stability, and ensures the turning quality and subsequent use effect of the cylinder liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an engine cylinder precision component processing device provided by the present invention.

[0022] Figure 2 It is a three-dimensional diagram of the processing state of an engine cylinder precision component processing device provided by the present invention.

[0023] Figure 3 The present invention is a top view of a processing state of an engine cylinder precision component processing device provided by the present invention.

[0024] Figure 4 yes Figure 3 Sectional view of AA.

[0025] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0026] Figure 6 It is a three-dimensional structural diagram of the inner support assembly.

[0027] Figure 7 It is a top view of the inner support assembly.

[0028] Figure 8 yes Figure 7 Cross-sectional view of CC.

[0029] Fig. 9 It is a three-dimensional diagram of the assembly relationship between the inner support module and the inner support frame.

[0030] Fig.10 It is a three-dimensional diagram of the partial structure of the inner support driving mechanism and the assembly structure of the inner support frame.

[0031] Fig.11 It is a three-dimensional structural diagram of the turning mechanism.

[0032] In the figure: 1, processing base; 11, guide rail; 12, mobile guide frame; 121, horizontal guide rod; 2, inner support assembly; 21, slewing support; 22, slewing plate; 23, inner support frame; 231, guide column; 232, bearing end plate; 233, No. 1 connecting plate; 234, No. 2 connecting plate; 24, inner support module; 241, inner support block; 242, double-head telescopic rod; 2421, middle tube; 2422, sliding rod; 243, self-adaptive component; 2431, slider; 2432, sliding block; 2433, self-adaptive spring; 25, inner Support drive mechanism; 251, drive motor; 252, drive shaft; 2521, hinged joint; 253, connecting rod; 254, drive plate; 2541, sliding plate; 26, end clamp; 261, end clamp spring; 3, turning mechanism; 31, sliding base; 311, side support plate; 32, turning tool fixing table; 33, top contact block; 331, cylindrical shaft; 332, ball bearing; 34, outer clamp component; 341, advance slider; 342, sliding shaft; 343, roller frame; 344, outer clamp spring; 345, outer clamp guide roller; 4, cylinder sleeve. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, a turning processing device for a cylinder sleeve 4 for papermaking includes a processing base 1, on which two inner support assemblies 2 for jointly supporting and clamping the cylinder sleeve 4 are installed in a horizontally relatively sliding manner; a turning mechanism 3 is installed in the processing base 1 in a horizontally sliding manner in the same direction as the inner support assembly 2, and the turning mechanism 3 is located between the two inner support assemblies 2.

[0036] like Figure 1 and Figure 4 As shown, two guide rails 11 are welded on the processing base 1; the inner support assembly 2 includes a slewing support 21 horizontally slidably installed on the two guide rails 11, and the slewing support 21 can be connected to the hydraulic cylinder, so that the slewing support 21 is driven to slide by the hydraulic cylinder; a turntable 22 is installed on the slewing support 21 for horizontal rotation driving, and the rotation driving method of the turntable 22 is the existing technology, and can be specifically driven by a motor and a matching transmission system; an inner support frame 23 is fixedly installed on the turntable 22, and the inner support frame 23 is equipped with a plurality of inner support modules 24 evenly distributed along the axial direction of the turntable 22, and the inner support frame 23 is also equipped with an inner support driving mechanism 25 for synchronously driving the plurality of inner support modules 24 to perform inner support clamping on the cylinder sleeve 4.

[0037] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the inner support frame 23 includes two bearing end plates 232, four guide columns 231 are horizontally welded between one of the bearing end plates 232 and the turntable 22, and the four guide columns 231 are evenly distributed around the circumference of the central axis of the turntable 22, and the end clamping plate 26 is slidably mounted on the four guide columns 231. An end clamping spring 261 is sleeved on the guide column 231, and the two ends of the end clamping spring 261 are respectively welded to the turntable 22 and the end clamping plate 26; four No. 1 connecting plates 233 and four No. 2 connecting plates 234 are horizontally welded between the two bearing end plates 232; the four No. 1 connecting plates 233 and the four No. 2 connecting plates 234 are evenly and alternately distributed around the circumference of the central axis of the turntable 22.

[0038] like Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the inner support module 24 includes four inner support blocks 241 uniformly distributed around the central axis of the turntable 22, and the four inner support blocks 241 are installed on the four No. 1 connecting plates 233 in a one-to-one corresponding manner along the radial sliding manner of the turntable 22; the inner support module 24 also includes four double-headed telescopic rods 242 that are alternately distributed with the four inner support blocks 241 and are hinged in series to form a closed loop, and the four inner support blocks 241 and the four double-headed telescopic rods 242 form an inner support frame structure with a square structure; the double-headed telescopic rod 242 includes a center tube 2421 and two sliding rods 2422 relatively slidably installed at both ends of the center tube 2421, and the two sliding rods 2422 are hinged on the two inner support blocks 241; the four double-headed telescopic rods 242 are located on the center tube 2421 and are equipped with an adaptive component 243.

[0039] like Figure 5, Figure 8 and Fig.10 As shown, the inner support driving mechanism 25 includes a driving motor 251 horizontally fixed to the center of the turntable 22 by bolts, and a driving shaft 252 is fixed to the output shaft of the driving motor 251, and the driving shaft 252 passes through the end clamping plate 26 and is horizontally rotatably installed on two bearing end plates 232; a driving plate 254 is commonly connected between multiple self-adaptive components 243 distributed in the axial direction of the turntable 22 in multiple inner support modules 24, and there are four driving plates 254 in total, and the four driving plates 254 are arranged in a one-to-one correspondence with the four No. 2 connecting plates 234; sliding plates 2541 are relatively vertically welded at both ends of the driving plate 254 located in the axial direction of the turntable 22, and the two sliding plates 2541 are arranged along the diameter of the turntable 22. It is slidably mounted on the corresponding No. 2 connecting plate 234; two articulated joints 2521 are welded on the driving shaft 252, and connecting rods 253 are hinged between the articulated joints 2521 and the sliding plates 2541 on the adjacent sides of the four driving plates 254; the adaptive component 243 includes a sliding block 2432 welded on the driving plate 254 and a slider 2431 slidably mounted in the sliding block 2432, the slider 2431 is welded on the middle tube 2421, the slider 2431 slides radially along the turntable 22, two adaptive springs 2433 are welded between the middle tube 2421 and the sliding block 2432, and the two adaptive springs 2433 are distributed on both sides of the slider 2431.

[0040] like Figure 1 , Figure 4 and Fig.11 As shown, the turning mechanism 3 includes a sliding base 31 horizontally driven and installed on two guide rails 11. The linear sliding drive method of the sliding base 31 is a prior art and will not be described in detail here. The sliding base 31 is equipped with a tool fixing table 32 for fixing the turning tool, and the tool fixing table 32 is driven to advance in the radial direction of the turntable 22. In this embodiment, the tool fixing table 32 can be driven to advance by a hydraulic cylinder, and the advancement direction is specifically the vertical direction. In order to improve the stability during turning, the sliding base 31 is equipped with two groups of external clamping parts 34 that are adaptively clamped against the outer wall of the cylinder sleeve 4. The two groups of external clamping parts 34 are distributed axially along the turntable 22. The tool fixing table 32 is located between the two groups of external clamping parts 34. The number of external clamping parts 34 in each group is two, and the two external clamping parts 34 in each group are symmetrically distributed on both sides of the central axis of the turntable 22 in a direction horizontally perpendicular to the axial direction of the turntable 22.

[0041] like Figure 1 , Figure 4 and Fig.11As shown, the sliding base 31 is provided with two side support plates 311 horizontally and symmetrically distributed on both sides of the central axis of the rotating disk 22, and the processing base 1 is provided with a movable guide frame 12 corresponding to the two side support plates 311. The movable guide frame 12 is provided with two horizontal guide rods 121, and the side support plates 311 are slidably installed on the two horizontal guide rods 121; the two outer clamping parts 34 located on the same side of the central axis of the rotating disk 22 are both installed on the side support plates 311 on the same side; the outer clamping parts 34 include a horizontally driven sliding block 341 slidably installed on the side bracket, and the sliding block 341 can be moved by a hydraulic pressure mounted on the side bracket The cylinder is driven; two sliding shafts 342 are slidably installed on the advance slider 341 and are set to slide in the same direction as the advance slider 341, and a roller frame 343 is welded to the ends of the two sliding shafts 342. An external clamping spring 344 is sleeved on the sliding shaft 342, and the two ends of the external clamping spring 344 are respectively welded to the advance slider 341 and the roller frame 343; two groups of external clamping guide rollers 345 are horizontally rotatably installed on the roller frame 343, and the two groups of external clamping guide rollers 345 are distributed on the upper and lower sides of the central axis of the turntable 22. In this embodiment, the number of each group of external clamping guide rollers 345 is two, and the two groups of external clamping guide rollers 345 constitute a V-shaped external clamping bayonet. Two top contact blocks 33 are welded on the sliding base 31, and the two top contact blocks 33 are symmetrically distributed on both sides of the turning tool fixing platform 32 in a direction perpendicular to the central axis of the turntable 22, and the two top contact blocks 33 are centrally arranged relative to the two groups of outer clamping parts 34; a cylindrical shaft 331 is arranged on the top contact block 33, and the axial direction is parallel to the axial direction of the turntable 22, and balls 332 are movably embedded at both ends of the cylindrical shaft 331.

[0042] Before processing, in order to facilitate the placement of the cylinder liner 4, the distance between the two inner support assemblies 2 is at the maximum state, and the distance between the two outer clamping parts 34 in each group is also at the maximum state.

[0043] During processing, the cylinder liner 4 can be lifted to the processing position by a steel cable and a crane, so that the cylinder liner 4 is located between the two inner support assemblies 2, and the cylinder liner 4 can fall on the cylindrical shafts 331 of the two top contact blocks 33, and the cylindrical shafts 331 can play a role in auxiliary support and limiting; then, while maintaining the lifting state, the swivel supports 21 of the two inner support assemblies 2 are started, so that the two swivel supports 21 slide toward each other, and then the inner support frame 23 and the inner support module 24 are extended into the barrel of the cylinder liner 4 until they move to the two ends of the cylinder liner 4 and are clamped between the two end chucks 26. At this time, the inner support block 241 in the inner support module 24 closest to the end chuck 26 is completely located in the barrel of the cylinder liner 4, and the inner support block 241 will not interfere with the turning of the end of the cylinder liner 4.

[0044] Next, the driving motors 251 of the two inner support assemblies 2 are started synchronously, and the driving motors 251 drive the driving shafts 252 to rotate, and drive the four driving plates 254 to slide in the direction away from the center of the turntable 22 through the two sets of connecting rods 253, and the driving plates 254 indirectly drive the double-headed telescopic rods 242 to move synchronously therewith through the adaptive components 243, so that the two sliding rods 2422 in the double-headed telescopic rods 242 slide out in reverse, and synchronously drive the inner support blocks 241 to slide in the direction away from the central axis of the turntable 22, so that the inner support blocks 241 tend to be clamped with the inner wall of the cylinder sleeve 4. In the process of clamping driven by the inner support driving mechanism 25, under the mutual restraint of the four double-headed telescopic rods 242 and the adaptive telescopic cooperation of the four adaptive components 243, each inner support module The four inner support blocks 241 in 24 are in random contact with the inner wall of the cylinder liner 4, and the four inner support blocks 241 are always at the same distance from the central axis of the turntable 22. At least one inner support block 241 in a single inner support module 24 can form an effective clamping contact with the inner wall of the cylinder liner 4; under the common inner support clamping of multiple inner support modules 24, there must be multiple inner support blocks 241 in the circumferential direction that form a clamping contact with the inner wall of the cylinder liner 4, and the distribution centers of all the inner support blocks 241 are on the central axis of the turntable 22. On the basis of not affecting the inner support clamping, the reliability and stability of the inner support clamping are improved, and the deviation error between the inner support clamping center and the center of the cylinder liner 4 itself is greatly reduced, thereby indirectly improving the uniformity of the wall thickness of the cylinder liner 4 after turning to ensure the use quality of the cylinder liner 4.

[0045] After the inner support is clamped, the steel cable can be removed. During the actual turning, the turning mechanism 3 can move along the axial direction of the cylinder sleeve 4, and first turn one end of the cylinder sleeve 4, then turn the entire outer wall of the cylinder sleeve 4, and finally turn the other end. Specifically, Figure 3 As shown, if the turning process is performed from left to right, first, the turning mechanism 3 is moved to the leftmost side. When it is located at the leftmost side, the balls 332 on the same side of the two cylindrical shafts 331 are in contact with the end chuck 26 on the left side, so that the left end chuck 26 is separated from the end of the cylinder sleeve 4 to be turned, and the contact of the balls 332 reduces the resistance of the end chuck 26 to rotate synchronously with the inner support frame 23; the turning tool is located between the left end chuck 26 and the left end of the cylinder sleeve 4, and then, a group of outer clamping parts 34 on the right side are synchronized, so that the cylinder sleeve 4 is clamped between the two outer clamping parts 34 of the right side group, and then, the turning mechanism 3 slides to the right as a whole, so that the turning tool and the left end of the cylinder sleeve 4 are aligned. After the alignment is completed, the two turntables 22 are started synchronously, and the two inner support assemblies 2 synchronously drive the cylinder sleeve 4 to rotate, and the turning tool radially advances, thereby completing the turning of the left end of the cylinder sleeve 4.

[0046] Subsequently, the turning tool is withdrawn from the left end of the cylinder liner 4 and realigned with the outer wall near the left end of the cylinder liner 4. Then, the turning mechanism 3 moves axially along the cylinder liner 4 to turn the outer wall of the cylinder liner 4. During the movement, the left end chuck 26 is reset and clamped with the left end of the cylinder liner 4 again. When a group of outer clamping parts 34 on the left side moves to avoid the left end chuck 26, the left group of outer clamping parts 34 are started and clamped to the cylinder liner 4 synchronously with the right group of outer clamping parts 34 to improve the stability during the turning process.

[0047] When moving to the right until the right group of outer clamping parts 34 contacts the right end chuck 26, the right group of outer clamping parts 34 immediately retreats to avoid the position of the right end chuck 26, and continues to move to complete the outer wall turning of the right part. Similarly, when moving to a certain position on the right side, the ball 332 on the right side of the two cylindrical shafts 331 gradually pushes open the right end chuck 26, so that it is separated from the right end of the cylinder sleeve 4, and then, it is aligned with the right end to complete the turning of the right end of the cylinder sleeve 4.

[0048] After the outer wall and both ends of the cylinder sleeve 4 are turned, the steel cable hoist is placed again, and then the two inner support assemblies 2 are loosened, and finally the cylinder sleeve 4 is lifted out.

[0049] The present invention provides an engine cylinder block precision component processing device, which is provided with two inner support assemblies 2, and the inner support assembly 2 is provided with a plurality of independent inner support modules 24 that can synchronously drive and clamp the inner wall of the cylinder liner 4, thereby forming a plurality of inner support clamping contact points distributed in the circumferential direction and having a common clamping center, improving the problem of the existing inner support chuck structure that the clamping center deviates due to the uneven inner wall of the cylinder liner 4, resulting in uneven wall thickness of the cylinder liner 4 after turning, improving the reliability and stability of the inner support clamping, and greatly reducing the inner support clamping center and the inner support clamping center. The deviation error between the center of the cylinder liner 4 itself; in addition, two groups of outer clamping parts 34 are arranged to move synchronously with the turning process and provide outer wall clamping for the cylinder liner 4, and a multiple center correction structure with internal support and external clamping is adopted, which improves the turning stability and further improves the concentricity of the turning; in summary, the device provided by the present invention can perform continuous turning processing on the outer wall and both ends of the cylinder liner 4, improves the turning accuracy on the basis of improving the turning stability, and ensures the turning quality of the cylinder liner 4 and the subsequent use effect.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] 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, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0052] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An engine cylinder precision component processing device, characterized in that: The invention comprises a processing base (1), on which two inner support assemblies (2) for jointly supporting and clamping a cylinder sleeve (4) are installed and arranged to slide horizontally relative to each other; a turning mechanism (3) is installed and driven to slide horizontally in the same direction as the inner support assemblies (2) on the processing base (1), and the turning mechanism (3) is located between the two inner support assemblies (2); wherein: The inner support assembly (2) comprises a swivel support (21) mounted on a processing base (1) in a horizontal sliding drive, a swivel disc (22) mounted on the swivel support (21) in a horizontal rotation drive, an inner support frame (23) fixedly mounted on the swivel disc (22), the inner support frame (23) being equipped with a plurality of inner support modules (24) distributed along the axial direction of the swivel disc (22), the inner support frame (23) being also equipped with an inner support driving mechanism (25) for synchronously driving the plurality of inner support modules (24) to perform inner support clamping on the cylinder sleeve (4), the inner support module (24) comprising at least three inner support blocks (241) distributed circumferentially around the central axis of the swivel disc (22), when the inner support module (24) is performing inner support clamping on the cylinder sleeve (4), the distances between the at least three inner support blocks (241) in the same inner support module (24) and the central axis of the swivel disc (22) are always equal; The turning mechanism (3) comprises a sliding base (31) which is horizontally driven and installed on a processing base (1); a turning tool fixing platform (32) for fixing a turning tool is mounted on the sliding base (31), and the turning tool fixing platform (32) is driven to advance in the radial direction of the rotary disk (22); the sliding base (31) is equipped with two groups of external clamping components (34) which are used to adaptively clamp the outer wall of the cylinder sleeve (4); the two groups of external clamping components (34) are distributed along the axial direction of the rotary disk (22); the turning tool fixing platform (32) is located between the two groups of external clamping components (34); the number of external clamping components (34) in each group is two, and the two external clamping components (34) in each group are symmetrically distributed on both sides of the central axis of the rotary disk (22) in a direction horizontally perpendicular to the axial direction of the rotary disk (22).

2. The engine cylinder block precision component processing device according to claim 1, characterized in that: The inner support frame (23) is equipped with an end chuck (26) for elastically clamping the end of the cylinder sleeve (4); at least one top contact block (33) is fixed on the sliding base (31), and when the turning mechanism (3) moves toward one side of the inner support assembly (2), the top contact block (33) contacts the end chuck (26) approaching one side, so that the end chuck (26) is separated from the end of the cylinder sleeve (4).

3. The engine cylinder block precision component processing device according to claim 2, characterized in that: The inner support block (241) is installed on the inner support frame (23) in a radially sliding manner along the rotating disk (22); the inner support module (24) also includes a plurality of double-headed telescopic rods (242) which are alternately distributed and connected in series with at least three inner support blocks (241) to form a closed loop, and the double-headed telescopic rods (242) are fixedly equipped with a self-adaptive component (243) which is elastically retractable along the radial direction of the rotating disk (22) at the center between the two ends; the inner support driving mechanism (25) includes a plurality of driving plates (254) which are arranged in a one-to-one correspondence with the plurality of double-headed telescopic rods (242) in the same inner support module (24), and the driving plates (254) are installed on the inner support frame (23) in a radially driving manner along the rotating disk (22), and the plurality of self-adaptive components (243) distributed in the axial direction of the rotating disk (22) in the plurality of inner support modules (24) are fixed together on the correspondingly arranged driving plates (254).

4. The engine cylinder block precision component processing device according to claim 2, characterized in that: When the end clamp (26) is clamped with the end of the cylinder liner (4), the inner support block (241) in the inner support module (24) closest to the end clamp (26) is completely located in the cylinder liner (4).

5. The engine cylinder block precision component processing device according to claim 3, characterized in that: The inner support driving mechanism (25) further comprises a driving shaft (252) which is coaxially arranged with the rotating disk (22) and horizontally rotatably mounted on the inner support frame (23); sliding plates (2541) are relatively vertically arranged on the driving plate (254) at both ends of the rotating disk (22) in an axial direction, and the two sliding plates (2541) are slidably mounted on the inner support frame (23); two articulated joints (2521) which correspond to the two sliding plates (2541) are fixed on the driving shaft (252); and connecting rods (253) are correspondingly articulated between the articulated joints (2521) and the multiple sliding plates (2541) on the same side of the multiple driving plates (254).

6. The engine cylinder block precision component processing device according to claim 3, characterized in that: The double-head telescopic rod (242) comprises a central tube (2421) and two sliding rods (2422) relatively slidably mounted on both ends of the central tube (2421), and the two sliding rods (2422) are hinged on two inner support blocks (241); the self-adaptive component (243) is connected to the central tube (2421).

7. The engine cylinder block precision component processing device according to claim 1, characterized in that: The sliding base (31) is provided with two side support plates (311) horizontally and symmetrically distributed on both sides of the central axis of the rotating disk (22); the two outer clamping parts (34) located on the same side of the central axis of the rotating disk (22) are both installed on the side support plates (311) on the same side; the outer clamping parts (34) include an advance slider (341) horizontally driven and slidably installed on the side bracket; the advance slider (341) is slidably installed with a plurality of sliding shafts (342) slidably arranged in the same direction as the advance slider; the ends of the plurality of sliding shafts (342) are commonly fixed with a roller frame (343); the sliding shaft (342) is sleeved with an outer clamping spring (344), and the two ends of the outer clamping spring (344) are respectively fixed on the advance slider (341) and the roller frame (343); the roller frame (343) is horizontally rotatably installed with two groups of outer clamping guide rollers (345); the two groups of outer clamping guide rollers (345) are distributed on the upper and lower sides of the central axis of the rotating disk (22).

8. The engine cylinder block precision component processing device according to claim 2, characterized in that: The top contact block (33) is provided with a cylindrical shaft (331) axially arranged parallel to the axial direction of the rotating disk (22), and both ends of the cylindrical shaft (331) are movably inlaid with balls (332).

9. The engine cylinder block precision component processing device according to claim 5, characterized in that: The inner support frame (23) comprises a plurality of guide posts (231) horizontally fixed on the rotary disk (22); the end clamping disk (26) is slidably mounted on the plurality of guide posts (231); an end clamping spring (261) is sleeved on the guide posts (231), and two ends of the end clamping spring (261) are respectively fixed on the rotary disk (22) and the end clamping disk (26).

10. The engine cylinder block precision component processing device according to claim 9, characterized in that: The inner support frame (23) also includes two bearing end plates (232), one of which is fixed to the ends of a plurality of guide pillars (231); a plurality of No. 1 connecting plates (233) corresponding to a plurality of inner support blocks (241) in the inner support module (24) are horizontally fixed between the two bearing end plates (232), and the inner support blocks (241) are slidably mounted on the corresponding No. 1 connecting plates (233); a plurality of No. 2 connecting plates (234) corresponding to a plurality of drive plates (254) are also horizontally fixed between the two bearing end plates (232), and two sliding plates (2541) arranged on the drive plates (254) are slidably mounted on the No. 2 connecting plates (234) at corresponding positions; the drive shaft (252) is horizontally rotatably mounted on the two bearing end plates (232).

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