Machine tool clamping device for rough machining of cylinder sleeve

Abstract

The invention discloses a machine tool clamping device for cylinder sleeve rough machining, and relates to the technical field of cylinder sleeve rough machining clamps, the machine tool clamping device comprises a center column and a center cylinder, and one end of the center column is fixedly connected to the side face of a partition plate. A main body structure of the device comprises a center column, an inner wall expanding and supporting assembly is arranged on the outer wall of the center column, an end face clamping assembly for clamping the end face of the cylinder sleeve is arranged on a right-angle supporting plate of a core assembly of the inner wall expanding and supporting assembly in the horizontal direction, and the end face clamping assembly and the inner wall expanding and supporting assembly are matched with each other when the outer wall of the cylinder sleeve is subjected to rough machining; the end face of the cylinder sleeve is clamped, and the problems that in the prior art, when a numerical control machine tool conducts rough machining on the cylinder sleeve, an inner supporting assembly is mostly adopted for expanding and supporting the inner wall of the cylinder sleeve, the cylinder sleeve is fixed to facilitate rough machining on the outer wall of the cylinder sleeve, and the end face of the cylinder is not clamped at the moment can be thoroughly solved. And when the air cylinder sleeve is subjected to axial force due to milling, the air cylinder sleeve is easy to transversely move along the inner supporting assembly, and machining errors are caused.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder liner rough machining fixtures, in particular to a machine tool clamping device for cylinder liner rough machining. Background Art

[0002] Cylinder liner is a key component in internal combustion engines that supports the piston and maintains gas sealing. It is usually made of cast iron or aluminum alloy. Its processing process is divided into rough machining and fine machining. Rough machining mainly removes excess material to form the basic shape of the cylinder liner. It usually includes machining of the outer wall and end face to ensure that the overall size and shape are close to the design requirements. Fine machining is carried out after rough machining to improve surface finish and dimensional accuracy, especially the fine machining of the inner hole to ensure smooth sliding of the piston. Therefore, both the outer wall and the end face need to be processed in the rough machining stage to ensure that the cylinder liner is suitable for subsequent assembly and use.

[0003] In the prior art, when CNC machine tools perform rough machining on cylinder sleeves, most of them use internal support components to expand and support the inner wall of the cylinder sleeve, and fix the cylinder sleeve to facilitate rough machining of the outer wall of the cylinder sleeve. At this time, the cylinder end face is not clamped. When the cylinder sleeve is subjected to axial force due to milling, the cylinder sleeve is easily displaced laterally along the internal support component, causing machining errors, affecting the machining accuracy of the outer wall and the overall shape of the cylinder sleeve. In addition, the lateral displacement may also cause damage to the internal support component, further affecting the machining efficiency and product quality. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, when CNC machine tools perform rough machining on cylinder sleeves, most of them use internal support components to expand and support the inner wall of the cylinder sleeve, and fix the cylinder sleeve to facilitate rough machining of the outer wall of the cylinder sleeve. At this time, the cylinder end face is not clamped. When the cylinder sleeve is subjected to axial force due to milling, the cylinder sleeve is easily displaced laterally along the internal support component, causing machining errors, affecting the machining accuracy of the outer wall and the overall shape of the cylinder sleeve. In addition, the lateral displacement may also cause damage to the internal support component, further affecting the machining efficiency and product quality. A machine tool clamping device for rough machining of cylinder sleeves is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A machine tool clamping device for rough machining of a cylinder liner, comprises a center column and a center tube, one end of the center column is fixedly connected to the side of a partition plate, the partition plate is fixedly arranged on the side of an inner cavity of a processing machine tool, and a closing cover is slidably connected to the top of the processing machine tool in a horizontal direction, a center screw hole is opened at the center of the end face of the center column, a center screw is threaded into the side face of the center screw hole, and the end of the center screw away from the center screw hole is movably inserted into the end cover, the center screw is fixedly provided with blocking shoulders on both sides of the end cover, a rectangular head is fixedly provided at the end of the center screw, and the end cover is fixedly connected to the side of the center tube by bolts, and the outer wall of the center tube has a circular array with an inner wall expansion support assembly for expanding the inner wall of the cylinder liner, the inner wall expansion support assembly comprises an inclined rod, an extension plate, a right-angle support plate, and an expansion support guide plate, and the right-angle support plate is provided with an end face clamping assembly for auxiliary clamping of the end face of the cylinder liner in a horizontal direction.

[0006] Optionally, the outer wall of the central tube is provided with an extension plate in a circular array, and the side surfaces of the extension plates are equidistantly rotatably connected with inclined rods, and the other ends of multiple groups of inclined rods are commonly rotatably connected to the bottom surface of the right-angle gusset plate, and the central column is provided with an expansion guide plate in a circular array on the outer wall of the side surface of the right-angle gusset plate, and the side surface of the expansion guide plate is provided with an expansion guide groove, and the right-angle gusset plate includes a horizontal section and a vertical section, and the top of the horizontal section of the right-angle gusset plate is provided with an arc surface, and the bottom of the side surface of the vertical section of the right-angle gusset plate is fixedly provided with an expansion guide block, and the expansion guide block extends into the interior of the expansion guide groove, and the expansion guide block is fixedly provided with an expansion limit block on one side of the expansion guide groove.

[0007] Optionally, the end face clamping assembly includes a transverse tie rod, a transverse tie column, and a clamping edge. The horizontal section of the right-angle support plate is movably inserted with a transverse tie rod in the horizontal direction. The side of the transverse tie rod is rotatably connected with a transverse tie column. One end of the transverse tie column is fixedly provided with a clamping edge. The end of the transverse tie column away from the clamping edge is provided with a common driving assembly for driving multiple clamping edges to avoid when the end face of the cylinder liner is rough-machined. The center column is provided with a transverse tensioning assembly on the side of the expansion guide plate for driving multiple groups of transverse tie rods to synchronously move laterally to clamp one end face of the cylinder liner.

[0008] Optionally, the transverse tensioning assembly includes a common barrel, a transverse pull disk, and an extension rod. The common barrel is threaded into the outer wall of the center column, and the transverse pull disk is movably inserted into the outer wall of the common barrel. The common barrel has limited shoulders fixedly provided on both sides of the transverse pull disk.

[0009] Optionally, the outer wall of the transverse pull plate has an extension rod in a circular array, and a transverse pull guide groove is opened on the side of the extension rod. The transverse pull rod passes through the expansion guide groove and is inserted into the interior of the transverse pull guide groove. The transverse pull rod is fixed with transverse pull limit blocks on both sides of the transverse pull guide groove, and the common screw barrel has drive holes in a circular array on the side of the limit shoulder.

[0010] Optionally, the common drive assembly includes a common toothed disc, a drive gear, a drive motor, and a universal synchronization assembly that ensures that the common toothed disc controls the rotation of the clamping edges of the ends of the multiple transverse tie columns when the multiple groups of transverse tie columns approach or move away from each other.

[0011] Optionally, a common toothed disc is rotatably connected to the end of the outer wall of the center column, the outer wall of the common toothed disc is in a circular array and meshed with a driven gear, a driving gear is stably meshed with the bottom of the common toothed disc, the side of the driving gear is fixedly connected to the output end of the driving motor, the driving motor is fixedly set on the side of the partition plate, an extension column is fixedly set at the center of the end face of the driven gear, one end of the extension column is rotatably connected to the partition plate, and a straight rod is fixedly set on the extension column near one end of the driven gear.

[0012] Optionally, the universal synchronization assembly includes a docking sleeve, a docking seat, a second seat, and a first seat. A S-shaped groove is provided on the side of the docking sleeve, and a S-shaped rod is movably inserted into the S-shaped groove.

[0013] Optionally, a docking seat is fixedly provided on the outer wall of the docking tube, the interior of the docking seat is rotatably connected to one end of a second seat, a vertical axis is fixedly provided on one end of the second seat away from the docking seat, and a horizontal axis is rotatably connected to the outer wall of the vertical axis.

[0014] Optionally, the horizontal axis is fixedly connected to the side of the first seat, the side of the first seat is fixedly connected to one end of the extension column, the central axes of the horizontal axis and the vertical axis are perpendicular to each other, and the rotating shaft of the second seat near one end of the docking tube is parallel to the central axis of the horizontal axis.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The main structure of the present invention includes a central column, and an inner wall expansion support assembly is arranged on the outer wall of the central column, and an end face clamping assembly for clamping the end face of the cylinder liner is arranged in the horizontal direction on the right-angle support plate of the core assembly of the inner wall expansion support assembly. The end face clamping assembly and the inner wall expansion support assembly cooperate with each other to clamp the end face of the cylinder liner when the outer wall of the cylinder liner is roughly processed, which can completely avoid the problem that most CNC machine tools in the prior art use the inner support assembly to expand the inner wall of the cylinder liner when rough processing is performed on the cylinder liner, and the cylinder liner is fixed to facilitate the rough processing of the outer wall of the cylinder liner. At this time, the cylinder end face is not clamped. When the cylinder liner is subjected to axial force due to milling, the cylinder liner is easily displaced laterally along the inner support assembly, resulting in processing errors, affecting the processing accuracy of the outer wall and the overall shape of the cylinder liner.

[0016] 2. The end face clamping components of the present invention are provided with three groups in total, and the actual number is the same as the number of traditional inner walls. A transverse tensioning component is provided on the outer wall of the central column. The user can drive the three groups of end face clamping components to clamp the end face of the cylinder liner to be rough-processed at the same time through one transverse tensioning component. The user can clamp multiple end faces at the same time through a single operation, which reduces the operation time and steps and improves the processing efficiency. In addition, the synchronous clamping of the three groups of clamping components can ensure that the end face of the cylinder liner is evenly stressed, reduces the deformation and processing errors caused by uneven clamping, and improves the processing accuracy.

[0017] 3. The present invention provides a common driving component at the end of the transverse tie column of the core component of the three groups of end face clamping components. When the cylinder liner end face needs to be polished, the common driving component drives the clamping edges of the ends of the three groups of transverse tie columns to rotate to a position that does not fit the cylinder liner end face, so as to facilitate the machine tool to process the cylinder liner end face. Secondly, one of the components of the common driving component is a universal synchronization component. When the three groups of transverse tie columns are moving away from or close to each other, the user can still control the three groups of transverse tie columns through a common driving component. Through a single common driving component, the user can conveniently control the three groups of transverse tie columns without separately controlling each group, which significantly simplifies the operation process. The universal synchronization component ensures that the three groups of transverse tie columns can coordinate their actions and maintain synchronization whether they are moving close to or away from each other, which effectively avoids processing errors caused by asynchrony. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 for Figure 1 Another perspective structural diagram of .

[0020] Figure 3 It is a structural schematic diagram of the inner wall expansion support assembly of the cylinder liner and its connecting parts.

[0021] Figure 4 for Figure 3 Another perspective structural diagram of .

[0022] Figure 5 It is a structural schematic diagram of the transverse tensioning component.

[0023] Figure 6 Schematic diagram of the structure of the center column and its connecting parts.

[0024] Figure 7 It is a schematic diagram of the structure of multiple groups of cylinder liner inner wall expansion components and end face clamping components.

[0025] Figure 8 for Figure 7 Schematic diagram of the partial cross-sectional structure.

[0026] Fig. 9 It is a schematic diagram of the structure of the cylinder liner inner wall expansion component and the end face clamping component.

[0027] Fig.10 It is a schematic diagram of the structure of the end face clamping assembly and its connecting parts.

[0028] Fig.11 for Fig.10 Schematic diagram of the structure with the tie rod removed.

[0029] Fig.12 It is a structural schematic diagram of the universal synchronization component.

[0030] Fig.13 It is a schematic diagram of the structure of the driven gear and its connecting parts.

[0031] In the figure: 1, closing cover; 2, processing machine tool; 3, controller; 4, partition plate; 5, common toothed disc; 6, center column; 61, center screw hole; 62, expansion guide plate; 7, driving gear; 8, driving motor; 9, expansion guide groove; 10, center cylinder; 11, end cover; 12, rectangular head; 121, center screw rod; 122, blocking shoulder; 13, common screw cylinder; 14, driving hole; 15, limit shoulder; 16, horizontal pull plate; 17, extension rod; 171, Horizontal pull guide groove; 18, expansion support limit block; 19, expansion support guide block; 20, right-angle support plate; 21, arc surface; 22, tilt rod; 23, extension plate; 24, horizontal pull rod; 25, horizontal pull limit block; 26, horizontal pull column; 261, clamping edge; 27, first receiving seat; 28, vertical axis; 29, horizontal axis; 30, second receiving seat; 31, docking seat; 320, straight groove; 33, extension column; 34, driven gear; 331, straight rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Reference Figure 1-13A machine tool clamping device for rough machining of a cylinder liner comprises a center column 6 and a center tube 10. One end of the center column 6 is fixedly connected to the side of a partition plate 4. The partition plate 4 is fixedly arranged on the side of an inner cavity of a processing machine tool 2. A closing cover 1 is slidably connected to the top of the processing machine tool 2 in a horizontal direction. A center screw hole 61 is opened at the center of the end face of the center column 6. A center screw 121 is screwed into the side of the center screw hole 61. A controller 3 is additionally arranged on the side of the partition plate 4 for controlling the drive motor 8 described below.

[0035] The end of the center screw 121 away from the center screw hole 61 is movably inserted into the end cover 11, and the center screw 121 is fixedly provided with blocking shoulders 122 on both sides of the end cover 11. The end of the center screw 121 is fixedly provided with a rectangular head 12, and the end cover 11 is fixedly connected to the side of the center tube 10 with bolts. Therefore, when the user rotates the rectangular head 12 with a square hole wrench, the end of the center screw 121 away from the rectangular head 12 will gradually screw into the center screw hole 61 inside the center column 6, and at this time the center tube 10 will gradually wrap around the center column 6.

[0036] The circular array on the outer wall of the center tube 10 has an inner wall expansion component for expanding the inner wall of the cylinder liner, and the inner wall expansion component includes a tilting rod 22, an extension plate 23, a right-angle support plate 20, and an expansion guide plate 62. The circular array on the outer wall of the center tube 10 has an extension plate 23, and the side of the extension plate 23 is equidistantly connected to the tilting rod 22 for rotation. The other ends of multiple groups of tilting rods 22 are commonly connected to the bottom surface of the right-angle support plate 20 for rotation. The center column 6 has an expansion guide plate 62 on the side of the outer wall of the right-angle support plate 20. The multiple groups of tilting rods 22 are parallel to each other. The extension plate 23, the multiple groups of tilting rods 22, and the expansion guide plate 62 form a parallelogram structure. When one end of the multiple groups of tilting rods 22 rotates, the extension plate 23 and the expansion guide plate 62 will move away from each other.

[0037] An expansion guide groove 9 is provided on the side of the expansion guide plate 62, and the right-angle support plate 20 includes a horizontal section and a vertical section. An arc-shaped surface 21 is provided on the top of the horizontal section of the right-angle support plate 20 for fitting the inner wall of the cylinder liner to be fixed, and an expansion guide block 19 is fixedly provided on the bottom of the side of the vertical section of the right-angle support plate 20. The expansion guide block 19 extends into the expansion guide groove 9, and an expansion limit block 18 is fixedly provided on one side of the expansion guide groove 9. The expansion limit block 18 cooperates with the expansion guide block 19 to limit the right-angle support plate 20 to move horizontally only along the inner wall of the expansion guide groove 9. When this movement is reflected in multiple groups of expansion guide grooves 9, it is displayed as multiple groups of right-angle support plates 20 moving away from or close to each other, thereby expanding the inner walls of cylinder sleeves with different inner diameters.

[0038] The right-angle support plate 20 is provided with an end face clamping assembly for auxiliary clamping of the end face of the cylinder liner in the horizontal direction, and the end face clamping assembly includes a transverse tie rod 24, a transverse tie column 26, and a clamping edge 261. The horizontal section of the right-angle support plate 20 is movably inserted with a transverse tie rod 24 in the horizontal direction, and the transverse tie column 26 is rotatably connected to the side of the transverse tie rod 24. Specifically, a plurality of bearings can be equidistantly arranged in the inner cavity of the transverse tie rod 24, and the transverse tie column 26 is inserted into the inner rings of the plurality of bearings. A clamping edge 261 is fixedly provided at one end of the transverse tie column 26. The lengths of the plurality of clamping edges 261 need to be appropriately set to adapt to the actual wall thickness of the cylinder liner, so that when the plurality of clamping edges 261 clamp the end face of the cylinder liner, the clamping edge 261 will not be exposed from the end face of the cylinder liner, thereby affecting the rough processing work of the CNC milling machine on the outer wall of the cylinder liner.

[0039] A common driving component is arranged at one end of the transverse tie column 26 away from the clamping edge 261 for driving multiple clamping edges 261 to avoid when the end face of the cylinder liner is rough-machined. A transverse tensioning component is arranged on the side of the expansion guide plate 62 of the center column 6 for driving multiple groups of transverse tie rods 24 to synchronously move transversely to clamp one end face of the cylinder liner. The transverse tensioning component includes a common screw barrel 13, a transverse pull plate 16, and an extension rod 17. The common screw barrel 13 is screwed into the outer wall of the center column 6, a section of external thread is arranged on the outer wall of the center column 6, and an internal thread is arranged in the inner cavity of the common screw barrel 13.

[0040] A transverse pull disk 16 is movably inserted into the outer wall of the common screw barrel 13, and limit shoulders 15 are fixedly provided on both sides of the transverse pull disk 16 of the common screw barrel 13, so that the transverse pull disk 16 can freely rotate around the empty groove between the two limit shoulders 15, and an extension rod 17 is provided in a circular array on the outer wall of the transverse pull disk 16, and a transverse pull guide groove 171 is opened on the side of the extension rod 17. The transverse pull rod 24 passes through the expansion guide groove 9 and is inserted into the transverse pull guide groove 171. The transverse pull limit blocks 25 are fixedly provided on both sides of the transverse pull guide groove 171 of the transverse pull rod 24. Therefore, when the common screw barrel 13 is screwed in along the outer wall of the center column 6, the extension rod 17 will pull the clamping edges 261 at one end of multiple transverse pull rods 24 through the two transverse pull limit blocks 25 to clamp the end of the cylinder liner to be processed.

[0041] The common screw barrel 13 has a circular array of drive holes 14 on the side of the limit shoulder 15. The user can continuously rotate the common screw barrel 13 through the columnar member. The common drive component includes a common toothed disc 5, a drive gear 7, a drive motor 8, and a universal synchronization component that ensures that the common toothed disc 5 controls the rotation of the clamping edges 261 at the ends of multiple transverse pull columns 26 when multiple groups of transverse pull columns 26 approach or move away from each other. The end of the outer wall of the center column 6 is rotatably connected to the common toothed disc 5. The outer wall of the common toothed disc 5 is circularly arrayed and meshed with a driven gear 34. The bottom of the common toothed disc 5 is stably meshed with a drive gear 7. The side of the drive gear 7 is fixedly connected to the output end of the drive motor 8. The drive The motor 8 is fixedly arranged on the side of the partition plate 4, and an extension column 33 is fixedly arranged at the center of the end face of the driven gear 34. One end of the extension column 33 is rotatably connected to the partition plate 4. The driving motor 8 adopts a servo motor when setting. The rotation angle of the servo motor needs to be set appropriately. The driving motor 8 can drive the common gear plate 5 to rotate a certain angle through the driving gear 7. The common gear plate 5 drives multiple driven gears 34 to rotate an appropriate angle, and finally drives the clamping edge 261 at the end of the transverse pull column 26 to swing within a certain range. A starting position of the clamping edge 261 is the position of clamping the end face of the cylinder liner, and the other extreme position is the position of not contacting the end face of the cylinder liner.

[0042] The extension column 33 is fixedly provided with a straight rod 331 at one end close to the driven gear 34. The universal synchronous assembly includes a docking cylinder 32, a docking seat 31, a second seat 30, and a first seat 27. A straight groove 320 is provided on the side of the docking cylinder 32. The straight groove 320 is movably inserted with the straight rod 331. The outer wall of the docking cylinder 32 is fixedly provided with a docking seat 31. The interior of the docking seat 31 is rotatably connected to one end of the second seat 30. The second seat 30 is fixedly provided with a vertical shaft 28 at one end away from the docking seat 31. The outer wall of the vertical shaft 28 is rotatably connected to the horizontal shaft 29. The flat shaft 29 is fixedly connected to the side of the first seat 27, and the side of the first seat 27 is fixedly connected to one end of the extension column 33. The central axes of the horizontal shaft 29 and the vertical shaft 28 are perpendicular to each other. The rotating shaft of one end of the second seat 30 close to the docking tube 32 is parallel to the central axis of the horizontal shaft 29. The arrangement of the docking tube 32 and the straight rod 331 allows the universal synchronous assembly to be retractable within a certain range in the horizontal direction. The universal synchronous assembly releases two degrees of freedom at the same time, allowing multiple transverse pull columns 26 to be driven to rotate by the same common gear disc 5 when they are away from or close to each other.

[0043] It should be added that the clamping structure can only perform rough machining on the end face of one end of the cylinder liner. After the rough machining of the end face of one end of the cylinder liner is completed, the corresponding structure needs to be controlled to release the cylinder liner and turn the cylinder liner so that the remaining end face of the cylinder liner is exposed, and the lateral length of the cylinder liner is greater than the length of the horizontal section of the right-angle support plate 20. Finally, the entire clamp structure is fixed and cannot rotate. Therefore, the machine tool fixed by this clamp is preferably a CNC milling machine.

[0044] The specific implementation steps and principles of the present invention are as follows: In the initial state, there is a certain gap between the clamping edge 261 and the side of one end of the right-angle support plate 20. The worker sets the cylinder sleeve to be processed on the outer wall of the three groups of right-angle support plates 20 until one end of the cylinder sleeve is against the side of the expansion guide plate 62. First, use the square hole handle to rotate the rectangular head 12. The rectangular head 12 drives the center screw 121 to screw into the center column 6, and drives the end cover 11 on one side of the center tube 10 to approach the expansion guide plate 62. The center tube 10 pushes the three groups of right-angle support plates 20 away from each other through the inclined rod 22, and uses the three groups of arc surfaces 21 to expand the inner wall of the cylinder sleeve. Secondly, use the columnar member to insert into the driving hole 14, drive the common screw barrel 13 to rotate along the outer wall of the center column 6, and drive the clamping edge 261 to press against the end face of one end of the cylinder sleeve through the extension rod 17 and the horizontal pull limit block 25.

[0045] After the rough machining of the outer wall of the cylinder liner is completed, the drive motor 8 is started, and the drive motor 8 drives the three sets of drive gears 7 to rotate through the drive gear 7 and the common gear plate 5. The three sets of drive gears 7 drive the three sets of transverse tie columns 26 to rotate to a proper angle through the universal synchronous assembly, and the clamping edges 261 at the ends of the three sets of transverse tie columns 26 rotate to a proper position. At this time, the three sets of clamping edges 261 do not contact the end surface of the cylinder liner.

[0046] After waiting for the end surface of the cylinder liner to be processed, use the square hole handle to rotate the rectangular head 12 again. The rectangular head 12 drives the center screw 121 to be screwed into the center column 6, and drives the end cover 11 on one side of the center tube 10 to approach the expansion guide plate 62. The center tube 10 pushes the three groups of right-angle support plates 20 to approach each other through the tilting rod 22. After releasing the cylinder liner, turn the cylinder liner so that the processed end of the cylinder liner is attached to the side of the expansion guide plate 62, repeat the above steps, and re-fix the cylinder liner.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A machine tool clamping device for rough machining of a cylinder liner, comprising a center column (6) and a center cylinder (10), characterized in that: One end of the center column (6) is fixedly connected to the side of the partition plate (4), and the partition plate (4) is fixedly arranged on the side of the inner cavity of the processing machine tool (2). The top of the processing machine tool (2) is slidably connected to a closing cover (1) in the horizontal direction. A center screw hole (61) is opened at the center of the end face of the center column (6). A center screw rod (121) is screwed into the side of the center screw hole (61). The end of the center screw rod (121) away from the center screw hole (61) is movably inserted into the end cover (11). The center screw rod (121) is fixedly provided with blocking shoulders (122) on both sides of the end cover (11). A rectangular head (12) is fixedly provided at the end of the center screw rod (121). The end cover (11) is fixedly connected to the side of the center tube (10) by bolts. The outer wall of the center tube (10) has a circular array of inner wall expansion components for expanding the inner wall of the cylinder sleeve. The inner wall expansion components include an inclined An inclined rod (22), an extension plate (23), a right-angle support plate (20), and an expansion support guide plate (62); the right-angle support plate (20) is provided with an end face clamping assembly for auxiliary clamping of the cylinder liner end face in the horizontal direction; the end face clamping assembly comprises a transverse tie rod (24), a transverse tie column (26), and a clamping edge (261); a transverse tie rod (24) is movably inserted into the horizontal section of the right-angle support plate (20) in the horizontal direction; and the transverse tie rod (24) is rotatable at the side thereof. A transverse tie column (26) is dynamically connected, one end of the transverse tie column (26) is fixedly provided with a clamping edge (261), and one end of the transverse tie column (26) away from the clamping edge (261) is provided with a common driving component for driving multiple clamping edges (261) to avoid when the end face of the cylinder liner is rough-machined, and the central column (6) is provided with a transverse tensioning component on the side of the expansion guide plate (62) for driving multiple groups of transverse tie rods (24) to synchronously move transversely and clamp one end face of the cylinder liner.

2. A machine tool clamping device for rough machining of cylinder sleeves according to claim 1, characterized in that: The central tube (10) has an extension plate (23) in a circular array on the outer wall, and the side of the extension plate (23) is equidistantly connected to the inclined rod (22), and the other ends of multiple groups of the inclined rods (22) are commonly connected to the bottom surface of the right-angle support plate (20). The central column (6) has an expansion guide plate (62) in a circular array on the outer wall of the side of the right-angle support plate (20), and the side of the expansion guide plate (62) is provided with an expansion guide groove (9). The right-angle support plate (20) includes a horizontal section and a vertical section. The top of the horizontal section of the right-angle support plate (20) is provided with an arc surface (21), and the bottom of the side of the vertical section of the right-angle support plate (20) is fixedly provided with an expansion guide block (19), and the expansion guide block (19) extends into the expansion guide groove (9). The expansion guide block (19) is fixedly provided with an expansion limit block (18) on one side of the expansion guide groove (9).

3. A machine tool clamping device for rough machining of cylinder sleeves according to claim 2, characterized in that: The transverse tensioning assembly comprises a common screw barrel (13), a transverse pull disk (16), and an extension rod (17); the common screw barrel (13) is screwed into the outer wall of the central column (6) through a thread; the transverse pull disk (16) is movably inserted into the outer wall of the common screw barrel (13); and the common screw barrel (13) is fixedly provided with limit shoulders (15) on both sides of the transverse pull disk (16).

4. A machine tool clamping device for rough machining of cylinder sleeves according to claim 3, characterized in that: The outer wall of the transverse pull plate (16) has an extension rod (17) in a circular array, and a transverse pull guide groove (171) is opened on the side of the extension rod (17). The transverse pull rod (24) passes through the expansion guide groove (9) and is inserted into the transverse pull guide groove (171). The transverse pull rod (24) is fixedly provided with transverse pull limit blocks (25) on both sides of the transverse pull guide groove (171), and the common screw barrel (13) has drive holes (14) in a circular array on the side of the limit shoulder (15).

5. A machine tool clamping device for rough machining of cylinder sleeves according to claim 4, characterized in that: The common drive assembly comprises a common toothed disc (5), a drive gear (7), a drive motor (8), and a universal synchronizing assembly that ensures that the common toothed disc (5) controls the rotation of the clamping edges (261) at the ends of the multiple transverse tie columns (26) when the multiple groups of transverse tie columns (26) approach or move away from each other.

6. A machine tool clamping device for rough machining of cylinder sleeves according to claim 5, characterized in that: The end of the outer wall of the central column (6) is rotatably connected to a common toothed disc (5), the outer wall of the common toothed disc (5) is in a circular array and meshed with a driven gear (34), the bottom of the common toothed disc (5) is stably meshed with a driving gear (7), the side of the driving gear (7) is fixedly connected to the output end of a driving motor (8), the driving motor (8) is fixedly arranged on the side of the partition plate (4), an extension column (33) is fixedly arranged at the center of the end face of the driven gear (34), one end of the extension column (33) is rotatably connected to the partition plate (4), and a straight rod (331) is fixedly arranged near one end of the extension column (33) close to the driven gear (34).

7. A machine tool clamping device for rough machining of cylinder sleeves according to claim 6, characterized in that: The universal synchronous assembly comprises a docking sleeve (32), a docking seat (31), a second docking seat (30), and a first docking seat (27). A S-shaped groove (320) is provided on a side of the docking sleeve (32), and a S-shaped rod (331) is movably inserted into the S-shaped groove (320).

8. A machine tool clamping device for rough machining of cylinder sleeves according to claim 7, characterized in that: A docking seat (31) is fixedly provided on the outer wall of the docking tube (32), and the interior of the docking seat (31) is rotatably connected to one end of a second docking seat (30). A vertical shaft (28) is fixedly provided on one end of the second docking seat (30) away from the docking seat (31), and the outer wall of the vertical shaft (28) is rotatably connected to a horizontal shaft (29).

9. A machine tool clamping device for rough machining of cylinder sleeves according to claim 8, characterized in that: The horizontal axis (29) is fixedly connected to the side of the first socket (27), the side of the first socket (27) is fixedly connected to one end of the extension column (33), the central axes of the horizontal axis (29) and the vertical axis (28) are perpendicular to each other, and the rotation axis of one end of the second socket (30) close to the docking tube (32) is parallel to the central axis of the horizontal axis (29).

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