Vibration suppression grinding head in grinding process of inner hole of cylinder sleeve

Abstract

The invention relates to the technical field of cylinder sleeve honing, and discloses a vibration suppression grinding head in the cylinder sleeve inner hole grinding process, the vibration suppression grinding head comprises a honing head body, the honing head body is composed of a honing head body, a rough honing sliding rod, a fine honing sliding rod, a rough honing oilstone base, a fine honing oilstone base and a sealing cover, and a honing head connecting rod body is arranged on the upper side of the honing head body; a transmission sliding rod is installed in the honing head connecting rod body in a sliding mode, and a rotating connector with the inverted-T-shaped section is rotationally installed at the lower end of the transmission sliding rod. The vibration suppression grinding head in the grinding process of the inner hole of the cylinder sleeve can effectively solve the problems that in the prior art, the rough honing oilstone and the fine honing oilstone need to be independently driven to control radial feeding, so that the machining cost is high; the rough honing oilstone and the fine honing oilstone are mostly mounted on an oilstone base through a metal binder or a bolt fixing mode, the cost of oilstone replacement consumables is high, the steps are tedious, time and labor are consumed during replacement, and then the working efficiency of the double-feeding honing head is affected.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinder liner honing, and particularly relates to a vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner. Background Art

[0002] The grinding of the inner hole of a cylinder liner is one of the key processes in engine manufacturing and maintenance. It usually adopts honing technology, which is a widely used method for precision machining of the inner hole surface. Honing is a process of precision machining the surface of a workpiece through a honing stone. The reticulated surface formed by honing can significantly shorten the running-in time, improve the service life, and reduce oil consumption. The double-feed honing head is an efficient and high-precision hole machining tool, which is designed for the integration of rough honing and fine honing processes. It can complete multi-stage machining in one clamping, significantly improving production efficiency and surface quality.

[0003] In this regard, the present application designs a vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner. In traditional double-feed honing heads, the rough honing stone and the fine honing stone need to be driven and controlled for radial feed by independent hydraulic cylinders or servo motors respectively to achieve rough machining and fine machining operations, resulting in a relatively high processing cost of the honing machine. Moreover, the rough honing stone and the fine honing stone are mostly installed on the stone base by means of metal binder or bolts. When the rough honing stone and the fine honing stone are worn, the double-feed honing head needs to be partially disassembled to replace the stone and the stone base together. The consumable cost of stone replacement is relatively high, and the steps are cumbersome, time-consuming and laborious, thus affecting the working efficiency of the double-feed honing head. Summary of the Invention

[0004] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner, which can effectively solve the problems in the prior art that the rough honing stone and the fine honing stone need to be driven and controlled for radial feed by independent drives respectively, resulting in a relatively high processing cost; and the rough honing stone and the fine honing stone are mostly installed on the stone base by means of metal binder or bolts, the consumable cost of stone replacement is relatively high, the steps are cumbersome, time-consuming and laborious, thus affecting the working efficiency of the double-feed honing head.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The present invention provides a vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner, including:

[0007] The honing head body is composed of a honing head body, a rough honing slide bar, a fine honing slide bar, a rough honing oilstone base, a fine honing oilstone base and a cover. The upper ends of the rough honing slide bar and the fine honing slide bar are both of annular rod structures. A honing head connecting rod body is arranged on the upper side of the honing head body. A transmission slide bar is slidably installed inside the honing head connecting rod body. A rotary joint with a convex cross-section is rotatably installed at the lower end of the transmission slide bar. A clamping transmission part is jointly arranged on the honing head connecting rod body and the rotary joint. An oilstone fixing part is jointly arranged on the rough honing oilstone base and the fine honing oilstone base;

[0008] Among them, the clamping transmission part includes a plurality of installation chutes opened on the outer wall of the upper side of the rotary joint. The plurality of installation chutes are evenly distributed in a circle. Wedge-shaped pressing plates are slidably installed in the installation chutes through compression springs. The ends of both side walls of the wedge-shaped pressing plates close to the rotary joint are convex structures. A clamping group is arranged on the fine honing slide bar;

[0009] Among them, the oilstone fixing part includes engaging chutes respectively opened on the installation end faces of the rough honing oilstone base and the fine honing oilstone base. An oilstone body is slidably installed in the engaging chutes. A fixing group is jointly arranged on the rough honing oilstone base and the fine honing oilstone base and the corresponding oilstone bodies respectively.

[0010] Further, the clamping group includes a plurality of accommodating chutes opened on the outer wall of the lower side of the rotary joint. The plurality of accommodating chutes are evenly distributed in a circle. Wedge-shaped clamping plates are slidably installed in the accommodating chutes through compression springs. A circular slide hole communicating with the inner wall of the annular rod is opened at the lower end of the fine honing slide bar. A support slide bar is slidably installed in the circular slide hole. Two upper and lower circular supporting plates that are both slidably connected to the inner wall of the annular rod are arranged on the upper side of the support slide bar. The two upper and lower circular supporting plates are connected by a compression spring, and the upper end of the support slide bar is fixedly connected to the lower circular supporting plate.

[0011] Further, the clamping group further includes a plurality of U-shaped chutes opened on the upper side of the inner wall of the annular rod of the fine honing slide bar. The plurality of U-shaped chutes are evenly distributed in a circle. The wedge-shaped ends of the plurality of wedge-shaped clamping plates are respectively movably attached to the inner walls of the upper horizontal sections of the corresponding U-shaped chutes. An L-shaped ejector rod is slidably installed on the inner wall of the vertical section of the U-shaped chute. The horizontal section of the L-shaped ejector rod is fixedly connected to the outer wall of the lower circular supporting plate.

[0012] Further, the fixing group includes U-shaped card slots respectively opened at the upper and lower ends of the oilstone body. L-shaped limiting chutes symmetrically opened on the upper and lower sides of the installation end face of the rough honing oilstone base. Two upper and lower U-shaped magnetic attraction plug plates are magnetically connected to the installation end face of the rough honing oilstone base. The inner wall of the insertion end of the U-shaped magnetic attraction plug plate is movably attached to the inner wall of the U-shaped card slot of the corresponding oilstone body, and the end of the U-shaped magnetic attraction plug plate away from the oilstone body is slidably connected to the inner wall of the L-shaped limiting chute through a connecting slide rod.

[0013] Further, the fixing group further includes two upper and lower supporting vertical plates installed on the installation end face of the rough honing stone base. At the opposite ends of the two upper and lower supporting vertical plates, a pushing plate is connected through a compression spring. The outer wall of the pushing plate is slidably connected to the installation end face of the rough honing stone base, and one end side wall of the pushing plate facing the stone body is movably attached to the corresponding U-shaped magnetic suction plug board. The fixing group structure on the fine honing stone base is the same.

[0014] Further, on both side walls of the outer wall of the honing head body where a plurality of rectangular sliding holes are pre-opened, two upper and lower rectangular sliding grooves are opened. In the rectangular sliding grooves, magnetic suction sliding plates are slidably installed through compression springs, and circular magnets are embedded at the positions corresponding to the plurality of magnetic suction sliding plates on both side walls of the rough honing stone base and the fine honing stone base. The plurality of magnetic suction sliding plates are respectively magnetically connected to the corresponding circular magnets.

[0015] Further, the outer wall of the rough honing rod annular rod is slidably connected to the inner wall of the upper circular opening of the honing head body through a plurality of circumferentially evenly distributed matching sliding strips. The outer wall of the fine honing rod annular rod is slidably connected to the inner wall of the rough honing rod annular rod through a plurality of circumferentially evenly distributed matching sliding strips. And at the positions corresponding to the plurality of matching sliding strips on the upper end of the inner wall of the circular opening of the honing head body, chamfering treatment is performed. At the positions corresponding to the plurality of matching sliding strips on the upper end of the inner wall of the rough honing rod annular rod, rounding treatment is performed.

[0016] Further, annular accommodating grooves are opened on the outer walls of the upper and lower ends of the plurality of rough honing stone bases and the plurality of fine honing stone bases, and spring rings are movably sleeved in the upper and lower two annular accommodating grooves.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0018] The vibration suppression grinding head during the inner hole grinding of the cylinder liner provided by the present invention uses a single feed drive to link and control the rough honing stone and the fine honing stone. The control rotary joint and a plurality of wedge-shaped pressing plates will jointly drive the rough honing rod and the fine honing rod to move downward. The rough honing rod will squeeze a plurality of rough honing stone bases, causing them to slide outwards along the rectangular sliding holes towards the outside of the honing head body for rough honing grinding. Continue to control the rotary joint and a plurality of wedge-shaped pressing plates to move downward. The rotary joint will separately squeeze the fine honing rod to continue moving downward. Through the fine honing rod, a plurality of fine honing stone bases are squeezed, causing them to slide outwards along the rectangular sliding holes towards the outside of the honing head body until the plurality of fine honing rods respectively drive the corresponding stone bodies to be tightened to the required positions to perform fine honing grinding on the inner wall of the cylinder liner. It is not necessary to separately drive and control the radial feed of the rough honing stone and the fine honing stone by independent hydraulic cylinders or servo motors, and the continuous operation of rough machining and fine machining can be realized, effectively reducing the grinding processing cost of the honing machine.

[0019] Move the U-shaped magnetic suction plug board to the side away from the oilstone body so that it exits the corresponding U-shaped card slot. When the connecting slide bar on the U-shaped magnetic suction plug board moves to the horizontal section position of the L-shaped limit chute, control the U-shaped magnetic suction plug board to flip 90 degrees and insert it into the horizontal section of the corresponding L-shaped limit chute, then the worn oilstone body can be pulled out and a new oilstone body can be inserted. Then, pull out the U-shaped magnetic suction plug board located in the horizontal section of the L-shaped limit chute towards the outside of the honing head body in turn, and flip it 90 degrees to restore the magnetic suction on the installation end face of the rough honing oilstone base or the fine honing oilstone base. The pushing plate will push the corresponding U-shaped magnetic suction plug board to insert it into the corresponding U-shaped card slot on the replaced oilstone body, so as to achieve the effect of limiting and fixing the replaced oilstone body, without partially disassembling the double-feed honing head, and replacing the oilstone and the oilstone base together, reducing the consumable cost, the disassembly and assembly of the oilstone body are convenient, and the replacement efficiency of the oilstone body is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is the first three-dimensional structure schematic diagram in the embodiment of the present invention;

[0022] Figure 2 It is the second three-dimensional structure schematic diagram in the embodiment of the present invention;

[0023] Figure 3 It is the structure schematic diagram of the three-dimensional partial section of the honing head body in the embodiment of the present invention;

[0024] Figure 4 It is the structure schematic diagram of the three-dimensional separation of the honing head connecting rod body and the rotary joint in the embodiment of the present invention;

[0025] Figure 5 For the present invention Figure 4 The enlarged schematic diagram at X;

[0026] Figure 6 It is the structure schematic diagram of the three-dimensional separation of the honing head body in the embodiment of the present invention;

[0027] Figure 7 It is the three-dimensional structure schematic diagram of the rough honing slide bar and the rough honing oilstone base in the embodiment of the present invention;

[0028] Figure 8 It is the three-dimensional structure schematic diagram of the fine honing slide bar and the fine honing oilstone base in the embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the three-dimensional separation of the fine honing slide bar and the support slide bar in the embodiment of the present invention;

[0030] Figure 10 For the present invention Figure 9 An enlarged schematic diagram at position Y in;

[0031] Figure 11 This is a schematic diagram of the three-dimensional separation of the oilstone fixing part in the embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the conversion of the motion states of the rough honing slide bar and the fine honing slide bar in the embodiment of the present invention.

[0033] The reference numerals in the figure respectively represent: 1, honing head body; 11, honing head body; 111, magnetic adsorption slide plate; 112, circular magnet; 12, rough honing slide bar; 13, fine honing slide bar; 14, rough honing oilstone base; 15, fine honing oilstone base; 16, spring ring; 2, honing head connecting rod body; 3, rotary joint; 4, clamping transmission part; 41, wedge-shaped pressing plate; 42, matching slide bar; 43, clamping group; 431, wedge-shaped clamping plate; 432, support slide bar; 433, circular supporting plate; 434, C-shaped chute; 435, L-shaped ejector rod; 5, oilstone fixing part; 51, oilstone body; 52, fixing group; 521, U-shaped magnetic adsorption plug; 522, supporting vertical plate; 523, pushing plate. Specific embodiments

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] Embodiment:

[0037] Please refer to Figures 1-12 , the present invention provides a technical solution: a vibration suppression honing head during the grinding process of the inner hole of a cylinder liner, including:

[0038] Honing head body 1, the honing head body 1 consists of a honing head body 11, a rough honing slide bar 12, a fine honing slide bar 13, a rough honing oilstone base 14, a fine honing oilstone base 15 and a cover. The upper ends of the rough honing slide bar 12 and the fine honing slide bar 13 are both of annular rod structures. A honing head connecting rod body 2 is arranged on the upper side of the honing head body 1. A transmission slide bar is slidably installed inside the honing head connecting rod body 2. A rotary joint 3 with a convex cross-section is rotatably installed at the lower end of the transmission slide bar. A clamping transmission part 4 is jointly arranged on the honing head connecting rod body 2 and the rotary joint 3. An oilstone fixing part 5 is jointly arranged on the rough honing oilstone base 14 and the fine honing oilstone base 15;

[0039] Among them, the clamping transmission part 4 includes a plurality of installation chutes opened on the outer wall on the upper side of the rotary joint 3. The plurality of installation chutes are evenly distributed in a circle. A wedge-shaped pressing plate 41 is slidably installed in the installation chute through a compression spring. The ends of both side walls of the wedge-shaped pressing plate 41 close to the rotary joint 3 are of convex structures. A clamping group 43 is arranged on the fine honing slide bar 13;

[0040] Among them, the oilstone fixing part 5 includes clamping chutes opened on the installation end faces of both the rough honing oilstone base 14 and the fine honing oilstone base 15. An oilstone body 51 is slidably installed in the clamping chute. The protruding height of the oilstone body 51 on the rough honing oilstone base 14 is greater than the protruding height of the oilstone body 51 on the fine honing oilstone base 15. A fixing group 52 is jointly arranged on the rough honing oilstone base 14 and the fine honing oilstone base 15 and the corresponding oilstone bodies 51 respectively.

[0041] The clamping group 43 includes a plurality of accommodation chutes opened on the outer wall on the lower side of the rotary joint 3. The plurality of accommodation chutes are evenly distributed in a circle. A wedge-shaped clamping plate 431 is slidably installed in the accommodation chute through a compression spring. A circular slide hole communicating with the inner wall of the annular rod is opened at the lower end of the fine honing slide bar 13. A support slide bar 432 is slidably installed in the circular slide hole. Two upper and lower circular supporting plates 433 that are both slidably connected to the inner wall of the annular rod are arranged on the upper side of the support slide bar 432. The two upper and lower circular supporting plates 433 are connected by a compression spring, and the upper end of the support slide bar 432 is fixedly connected to the lower circular supporting plate 433.

[0042] The clamping group 43 further includes a plurality of C-shaped chutes 434 opened on the upper side of the inner wall of the annular rod of the fine honing slide bar 13. The plurality of C-shaped chutes 434 are evenly distributed in a circle. The wedge-shaped ends of the plurality of wedge-shaped clamping plates 431 are respectively movably attached to the inner walls of the upper horizontal sections of the corresponding C-shaped chutes 434. An L-shaped ejector rod 435 is slidably installed on the inner wall of the vertical section of the C-shaped chute 434. The horizontal section of the L-shaped ejector rod 435 is fixedly connected to the outer wall of the lower circular supporting plate 433.

[0043] The fixing group 52 includes U-shaped card slots opened at both the upper and lower ends of the oilstone body 51. On the installation end face of the rough honing oilstone base 14, L-shaped limiting sliding slots are symmetrically opened on both sides of the engaging sliding slot. On the installation end face of the rough honing oilstone base 14, two upper and lower U-shaped magnetic suction plug boards 521 are magnetically connected. The inner wall of the insertion end of the U-shaped magnetic suction plug board 521 is movably attached to the inner wall of the corresponding U-shaped card slot of the oilstone body 51, and the end of the U-shaped magnetic suction plug board 521 away from the oilstone body 51 is slidably connected to the inner wall of the L-shaped limiting sliding slot through a connecting sliding rod.

[0044] The fixing group 52 further includes two upper and lower supporting vertical plates 522 installed on the installation end face of the rough honing oilstone base 14. The opposite ends of the two upper and lower supporting vertical plates 522 are both connected with a pushing plate 523 through a compression spring. The outer wall of the pushing plate 523 is slidably connected to the installation end face of the rough honing oilstone base 14, and the side wall of the end of the pushing plate 523 facing the oilstone body 51 is movably attached to the corresponding U-shaped magnetic suction plug board 521. The structure of the fixing group 52 on the fine honing oilstone base 15 is the same.

[0045] On both side walls of the outer wall of the honing head body 11 where multiple rectangular sliding holes are pre-opened, two upper and lower rectangular sliding slots are opened. In the rectangular sliding slots, magnetic suction sliding plates 111 are slidably installed through compression springs, and circular magnets 112 are embedded at the positions corresponding to the multiple magnetic suction sliding plates 111 on both side walls of the rough honing oilstone base 14 and the fine honing oilstone base 15. The multiple magnetic suction sliding plates 111 are respectively magnetically connected to the corresponding circular magnets 112.

[0046] On the outer wall of the annular rod of the rough honing sliding rod 12, it is slidably connected to the inner wall of the upper circular opening of the honing head body 11 through multiple circumferentially evenly distributed matching sliding strips 42. On the outer wall of the annular rod of the fine honing sliding rod 13, it is slidably connected to the inner wall of the annular rod of the rough honing sliding rod 12 through multiple circumferentially evenly distributed matching sliding strips 42. And chamfering treatments are made at the positions corresponding to the multiple matching sliding strips 42 on the inner wall of the upper end of the circular opening of the honing head body 11, and rounding treatments are made at the positions corresponding to the multiple matching sliding strips 42 on the upper end of the inner wall of the annular rod of the rough honing sliding rod 12.

[0047] On the outer walls at the upper and lower ends of multiple rough honing oilstone bases 14 and multiple fine honing oilstone bases 15, annular accommodating grooves are opened, and spring rings 16 are movably sleeved in the two upper and lower annular accommodating grooves.

[0048] During specific implementation:

[0049] First, the operator docks the honing head connecting rod body 2 with the honing machine through a floating joint. It should be noted that there are two limit rods at the upper end of the honing head body 1, and two L-shaped sliding holes are symmetrically preset on the outer wall of the lower end of the honing head connecting rod body 2. Then, the operator inserts the two limit rods at the upper end of the honing head body 1 into the L-shaped sliding holes at the lower end of the honing head connecting rod body 2 respectively and continues to rotate the grinding head, thus completing the docking work between the honing head body 1 and the honing head connecting rod body 2. During this period, the rotary joint 3 will drive the lower ends of multiple wedge-shaped pressing plates 41 to closely fit on the upper end surface of the annular rod of the rough honing slide rod 12. At the same time, the rotary joint 3 will also drive multiple wedge-shaped clamping plates 431 to insert into the annular rod of the fine honing slide rod 13. At this time, the rotary joint 3 will squeeze the upper circular supporting plate 433 and closely fit with it. And when multiple wedge-shaped clamping plates 431 are inserted, they will first retract into the corresponding accommodation chutes respectively until multiple wedge-shaped clamping plates 431 move to the position of the C-shaped chute 434, and then, under the action of the compression spring, they will extend out of the corresponding accommodation chutes and insert into the corresponding C-shaped chutes 434, completing the clamping work between the fine honing slide rod 13 and the rotary joint 3, thereby achieving the effect of further connecting the honing head body 1 and the honing head connecting rod body 2.

[0050] When rough honing the inner wall of the cylinder liner is required, it should be noted that when the rotary joint 3 drives multiple wedge-shaped pressing plates 41, the lower flat surfaces of multiple wedge-shaped pressing plates 41 will respectively closely fit on the upper flat surfaces of the corresponding mating slide bars 42. At this time, multiple wedge-shaped pressing plates 41 will not retract into the corresponding installation chutes under external force. First, the servo motor feed system on the honing machine controls the transmission slide rod to perform a radial feed movement to achieve the tension control of the rough honing oilstone. At this time, the transmission slide rod will drive multiple wedge-shaped pressing plates 41 to move downward through the rotary joint 3. The rotary joint 3 and multiple wedge-shaped pressing plates 41 will jointly drive the rough honing slide rod 12 and the fine honing slide rod 13 to move downward. The rough honing slide rod 12 will squeeze multiple rough honing oilstone bases 14, causing them to slide outwards along the rectangular slide holes towards the outside of the honing head body 11. Since multiple magnetic adsorption slide plates 111 are respectively magnetically adsorbed to the corresponding circular magnets 112, multiple magnetic adsorption slide plates 111 will also follow the corresponding rough honing oilstone bases 14 to perform sliding compensation along the rectangular chute towards the outside of the honing head body 11 until multiple rough honing oilstone bases 14 respectively drive the corresponding oilstone bodies 51 to be tightened to the required positions, and then the servo motor feed system on the honing machine stops working.

[0051] Then, the reciprocating hydraulic cylinder on the honing machine controls the honing head connecting rod body 2 to drive the honing head body 1 to insert into the cylinder liner, and perform a linear reciprocating motion, controlling the honing head body 1 to perform a reciprocating motion along the axis direction of the inner wall of the cylinder liner, so that the oilstone body 51 wears evenly and improves the shape accuracy of the hole. At the same time, the main shaft motor on the honing machine controls the honing head connecting rod body 2 to drive the honing head body 1 to rotate, and multiple rough honing stone bases 14 will respectively drive the corresponding oilstone bodies 51 to rotate synchronously, so as to achieve the effect of rough honing the inner wall of the cylinder liner.

[0052] When fine honing the inner wall of the cylinder liner is required, first, the servo motor feed system on the honing machine controls the transmission slide rod to continue to perform a radial feed motion. At this time, the transmission slide rod will drive multiple wedge-shaped pressing plates 41 to continue to move downward through the rotary joint 3. The rotary joint 3 and multiple wedge-shaped pressing plates 41 will jointly drive the rough honing slide rod 12 and the fine honing slide rod 13 to continue to move downward. During this period, the rough honing slide rod 12 will squeeze multiple rough honing oilstone bases 14 until the rough honing oilstones are tightened to the maximum distance. At this time, the upper end face of the annular rod of the rough honing slide rod 12 is flush with the upper end face of the honing head body 11. As the rotary joint 3 drives multiple wedge-shaped pressing plates 41 to continue to move downward, since the upper ends of the inner walls of the circular openings of the honing head body 11 corresponding to multiple mating sliding strips 42 are chamfered, and the upper ends of the inner walls of the annular rods of the rough honing slide rod 12 corresponding to multiple mating sliding strips 42 are rounded, multiple wedge-shaped pressing plates 41 will be squeezed and retracted into the corresponding installation chutes respectively, so as to achieve the effect that the rotary joint 3 alone squeezes the fine honing slide rod 13 to continue to move downward. It should be noted that since the protruding height of the oilstone body 51 on the rough honing oilstone base 14 is greater than the protruding height of the oilstone body 51 on the fine honing oilstone base 15, during rough honing, the oilstone bodies 51 on multiple fine honing slide rods 13 do not participate in the grinding work.

[0053] When the rotary joint 3 presses the precision honing slide bar 13 alone and continues to move downward, the precision honing slide bar 13 will press a plurality of precision honing oilstone bases 15, causing them to slide outwards along the rectangular sliding holes towards the outside of the honing head body 11. Until each of the plurality of precision honing slide bars 13 drives the corresponding oilstone body 51 to expand and tighten to the required position, the servo motor feed system on the honing machine stops working. Then, the reciprocating hydraulic cylinder on the honing machine controls the honing head connecting rod body 2 to drive the honing head body 1 to continue to perform linear reciprocating motion, controlling the honing head body 1 to perform reciprocating motion along the axis direction of the inner wall of the cylinder liner. At the same time, the main shaft motor on the honing machine controls the honing head connecting rod body 2 to drive the honing head body 1 to rotate, and the plurality of precision honing slide bars 13 will respectively drive the corresponding oilstone bodies 51 to rotate synchronously, so as to achieve the effect of precision honing the inner wall of the cylinder liner. There is no need to separately drive and control the radial feed of the rough honing oilstone and the precision honing oilstone by independent hydraulic cylinders or servo motors. A single feed drive can be used to link and control the rough honing oilstone and the precision honing oilstone, thus realizing the continuous operation of rough machining and fine machining, and effectively reducing the grinding processing cost of the honing machine.

[0054] When the oilstone bodies 51 on the rough honing oilstone base 14 and the precision honing oilstone base 15 are worn and need to be replaced, the staff removes the honing head body 1. Then, in cooperation with the disassembly tool, the U-shaped magnetic suction plug boards 521 on the rough honing oilstone base 14 or the precision honing oilstone base 15 that need to replace the oilstone body 51 are moved towards the side away from the oilstone body 51 in turn, so that they withdraw from the corresponding U-shaped card slots. And when the connecting slide bars on the U-shaped magnetic suction plug boards 521 move to the horizontal section position of the L-shaped limiting sliding groove, control the U-shaped magnetic suction plug boards 521 to flip 90 degrees and insert them into the horizontal section of the corresponding L-shaped limiting sliding groove. During this period, the pushing plate 523 will move towards the side away from the oilstone body 51 and always closely fit on the corresponding U-shaped magnetic suction plug board 521. When the two U-shaped magnetic suction plug boards 521 on the rough honing oilstone base 14 or the precision honing oilstone base 15 that need to replace the oilstone body 51 are both located in the horizontal section of the L-shaped limiting sliding groove, the staff can pull out the worn oilstone body 51 and insert a new oilstone body 51. Then, the staff pulls out the U-shaped magnetic suction plug boards 521 located in the horizontal section of the L-shaped limiting sliding groove towards the outside of the honing head body 11 in turn and flips them 90 degrees to restore the magnetic suction on the installation end faces of the rough honing oilstone base 14 or the precision honing oilstone base 15. Under the action of the compression spring, the pushing plate 523 will push the corresponding U-shaped magnetic suction plug board 521 to insert it into the corresponding U-shaped card slot on the replaced oilstone body 51, so as to achieve the effect of limiting and fixing the replaced oilstone body 51. There is no need to partially disassemble the double-feed honing head and replace the oilstone and the oilstone base together, reducing the consumable cost. The disassembly and assembly of the oilstone body 51 are convenient, and the replacement efficiency of the oilstone body 51 is effectively improved.

[0055] It should be noted that when assembling the honing head body 1, the rough honing slide rod 12 and the fine honing slide rod 13 are inserted in sequence, and then the cover is installed. The lower ends of the rough honing slide rod 12 and the fine honing slide rod 13 are both connected to the cover through compression springs, and the support slide rod 432 is located in the circular hole reserved in the middle of the cover. When it is necessary to release the clamped state of the fine honing slide rod 13 and the rotary joint 3, the staff presses the support slide rod 432 from bottom to top. The support slide rod 432 will drive a plurality of L-shaped ejector rods 435 to move upward synchronously through the circular supporting plate 433 on the lower side. The plurality of L-shaped ejector rods 435 will respectively squeeze the corresponding wedge-shaped clamping plates 431, causing them to retract into the corresponding receiving chutes, thereby achieving the effect of quickly separating the fine honing slide rod 13 and the rotary joint 3.

[0056] When the rough honing oilstone base 14 and the fine honing oilstone base 15 are inserted in sequence, the circular magnets 112 on the rough honing oilstone base 14 and the fine honing oilstone base 15 will be magnetically connected to the corresponding magnetic sliding plates 111, which can effectively prevent the problem that the rough honing oilstone base 14 and the fine honing oilstone base 15 are easily detached during installation. After all the rough honing oilstone bases 14 and the fine honing oilstone bases 15 are installed, the spring rings 16 can be movably sleeved in the upper and lower annular receiving grooves. The compression springs connected to the plurality of magnetic sliding plates 111 and the upper and lower spring rings 16 can effectively buffer the vibration generated by the honing head body 1 during honing processing. At the same time, the compression spring between the upper and lower L-shaped ejector rods 435 can buffer the vibration transmitted from the honing machine to the honing head connecting rod body 2, thereby achieving the effect of suppressing vibration in multiple directions and avoiding the problems of accelerating the wear of the oilstone body 51 due to vibration and affecting the processing accuracy of the oilstone body 51.

[0057] In summary, the present application has the following advantages:

[0058] Advantage 1: When the honing head body 1 is docked with the honing head connecting rod body 2, the rotary joint 3 will drive a plurality of wedge-shaped clamping plates 431 to insert into the annular rod of the fine honing slide rod 13. Until the plurality of wedge-shaped clamping plates 431 move to the position of the C-shaped chute 434, they are inserted into the corresponding C-shaped chute 434 to complete the clamping work of the fine honing slide rod 13 and the rotary joint 3, thereby achieving the effect of further connecting the honing head body 1 and the honing head connecting rod body 2.

[0059] Advantage 2: During rough honing grinding, the servo motor feed system on the honing machine controls the transmission slide rod to perform radial feed movement to achieve the tension control of the rough honing oilstone. The rotary joint 3 and a plurality of wedge-shaped pressing plates 41 will jointly drive the rough honing slide rod 12 and the fine honing slide rod 13 to move downward. The rough honing slide rod 12 will squeeze a plurality of rough honing oilstone bases 14, causing them to slide outwards along the rectangular sliding holes to the outside of the honing head body 11. Then, the reciprocating hydraulic cylinder on the honing machine and the main shaft motor cooperate to achieve the effect of rough honing grinding on the inner wall of the cylinder liner.

[0060] Advantage three, during the fine honing process, the servo motor feed system on the honing machine controls the transmission slide to continue the radial feed movement. During this period, the coarse honing slide 12 will squeeze multiple coarse honing stone bases 14 so that the coarse honing stone is tightened to the maximum distance. The multiple wedge-shaped pressure plates 41 will be squeezed and retracted into the corresponding installation slots, thereby achieving the effect of the rotary joint 3 squeezing the fine honing slide 13 to continue to move downward. The fine honing slide 13 will squeeze multiple fine honing stone bases 15, making them move along the rectangular The sliding hole slides outward from the honing head body 11 until the multiple fine honing slide rods 13 drive the corresponding oilstone body 51 to tighten to the required position, thereby achieving the effect of fine honing of the inner wall of the cylinder liner. There is no need to control the radial feed of the rough honing stone and the fine honing stone by independent hydraulic cylinders or servo motors respectively. A single feed drive can be used to control the rough honing stone and the fine honing stone in linkage, thereby achieving continuous operation of roughing and fine machining, effectively reducing the grinding cost of the honing machine.

[0061] Advantage four, when the oilstone body 51 needs to be replaced after being worn, the U-shaped magnetic plug-in plate 521 is moved to the side away from the oilstone body 51 to make it exit the corresponding U-shaped slot. When the connecting slide bar on the U-shaped magnetic plug-in plate 521 moves to the position of the horizontal section of the L-shaped limiting slide groove, the U-shaped magnetic plug-in plate 521 is controlled to flip 90 degrees and inserted into the corresponding horizontal section of the L-shaped limiting slide groove. The staff can then pull out the worn oilstone body 51 and insert a new oilstone body 51, and then the staff will sequentially move the U-shaped magnetic plug-in plate 521 located in the horizontal section of the L-shaped limiting slide groove toward the honing head body 11 is pulled out in the outer direction and turned 90 degrees to restore the magnetic attraction to the installation end surface of the coarse honing stone base 14 or the fine honing stone base 15. Under the action of the compression spring, the push plate 523 will push the corresponding U-shaped magnetic insertion plate 521 to insert it into the corresponding U-shaped slot on the replaced oilstone body 51, thereby achieving the effect of limiting and fixing the replaced oilstone body 51. There is no need to partially dismantle the double-feed honing head and replace the oilstone and the oilstone base together, which reduces the cost of consumables. The oilstone body 51 is easy to disassemble and assemble, and the replacement efficiency of the oilstone body 51 is effectively improved.

[0062] Advantage five: when it is necessary to release the clamping state of the precision honing slide 13 and the rotary joint 3, the staff presses the support slide 432 from the bottom to the top, and the support slide 432 will drive the multiple L-shaped push rods 435 to move upward synchronously through the circular supporting plate 433 on the lower side. The multiple L-shaped push rods 435 will respectively squeeze the corresponding wedge-shaped clamping plates 431, making them return to the corresponding accommodating slide grooves, thereby achieving the effect of quickly disengaging the precision honing slide 13 and the rotary joint 3.

[0063] Advantage Six: When inserting the rough honing stone base 14 and the fine honing stone base 15 in sequence, the circular magnets 112 on the rough honing stone base 14 and the fine honing stone base 15 will be magnetically connected to the corresponding magnetic sliding plates 111, which can effectively prevent the problem that the rough honing stone base 14 and the fine honing stone base 15 are prone to fall off during installation. Moreover, the compression springs and the upper and lower spring coils 16 connected to the multiple magnetic sliding plates 111 can effectively buffer the vibration generated by the honing head body 1 during honing processing. At the same time, the compression spring between the upper and lower L-shaped ejector rods 435 can buffer the vibration transmitted from the honing machine to the honing head connecting rod body 2, thereby achieving the effect of suppressing vibration in multiple directions, avoiding the problem of accelerating the wear of the oil stone body 51 due to vibration and affecting the processing accuracy of the oil stone body 51.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner, characterized in that, Comprising: A honing head body (1), the honing head body (1) is composed of a honing head body (11), a rough honing slide bar (12), a fine honing slide bar (13), a rough honing oilstone base (14), a fine honing oilstone base (15) and a cover. The upper ends of the rough honing slide bar (12) and the fine honing slide bar (13) are both in the shape of an annular rod. A honing head connecting rod body (2) is arranged on the upper side of the honing head body (1). A transmission slide bar is slidably installed inside the honing head connecting rod body (2). A rotary joint (3) with a convex cross-section is rotatably installed at the lower end of the transmission slide bar. A clamping transmission part (4) is jointly arranged on the honing head connecting rod body (2) and the rotary joint (3). An oilstone fixing part (5) is jointly arranged on the rough honing oilstone base (14) and the fine honing oilstone base (15). Wherein, the clamping transmission part (4) includes a plurality of installation chutes opened on the outer wall of the upper side of the rotary joint (3). The plurality of installation chutes are evenly distributed in a circle. A wedge-shaped pressing plate (41) is slidably installed in the installation chute through a compression spring. The ends of both side walls of the wedge-shaped pressing plate (41) close to the rotary joint (3) are in a convex structure. A clamping group (43) is arranged on the fine honing slide bar (13). Wherein, the oilstone fixing part (5) includes clamping chutes opened on the installation end faces of the rough honing oilstone base (14) and the fine honing oilstone base (15). An oilstone body (51) is slidably installed in the clamping chute. A fixing group (52) is jointly arranged on the rough honing oilstone base (14) and the fine honing oilstone base (15) and the corresponding oilstone body (51).

2. The vibration suppression grinding head during the grinding process of the inner hole of the cylinder liner according to claim 1, wherein: The clamping group (43) includes a plurality of receiving chutes opened on the outer wall of the lower side of the rotary joint (3). The plurality of receiving chutes are evenly distributed in a circle. A wedge-shaped clamping plate (431) is slidably installed in the receiving chute through a compression spring. A circular slide hole communicating with the inner wall of the annular rod is opened at the lower end of the fine honing slide bar (13). A support slide bar (432) is slidably installed in the circular slide hole. Two upper and lower circular supporting plates (433) that are both slidably connected to the inner wall of the annular rod are arranged on the upper side of the support slide bar (432). The two upper and lower circular supporting plates (433) are connected by a compression spring, and the upper end of the support slide bar (432) is fixedly connected to the lower circular supporting plate (433).

3. The vibration suppression grinding head during the inner hole grinding process of the cylinder liner according to claim 2, characterized in that: The clamping group (43) further includes a plurality of U-shaped chutes (434) opened on the upper side of the inner wall of the annular rod of the fine honing slide bar (13). The plurality of U-shaped chutes (434) are evenly distributed in a circle. The wedge-shaped ends of the plurality of wedge-shaped clamping plates (431) are respectively movably attached to the inner walls of the upper horizontal sections of the corresponding U-shaped chutes (434). An L-shaped ejector rod (435) is slidably installed on the inner wall of the vertical section of the U-shaped chute (434). The horizontal section of the L-shaped ejector rod (435) is fixedly connected to the outer wall of the lower circular supporting plate (433).

4. A vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner according to claim 1, characterized in that: The fixed group (52) includes U-shaped card slots opened at both the upper and lower ends of the oilstone body (51). The installation end face of the rough honing oilstone base (14) is symmetrically provided with L-shaped limiting sliding grooves on both sides of the clamping sliding groove. Two upper and lower U-shaped magnetic suction plug boards (521) are magnetically connected to the installation end face of the rough honing oilstone base (14). The inner wall of the insertion end of the U-shaped magnetic suction plug board (521) is movably attached to the inner wall of the U-shaped card slot of the corresponding oilstone body (51), and the end of the U-shaped magnetic suction plug board (521) away from the oilstone body (51) is slidably connected to the inner wall of the L-shaped limiting sliding groove through a connecting slide bar.

5. A vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner according to claim 4, characterized in that: The fixed group (52) further includes two upper and lower support vertical plates (522) installed on the installation end face of the rough honing oilstone base (14). The opposite ends of the two upper and lower support vertical plates (522) are both connected with a pushing plate (523) through a compression spring. The outer wall of the pushing plate (523) is slidably connected to the installation end face of the rough honing oilstone base (14), and the side wall of the end of the pushing plate (523) facing the oilstone body (51) is movably attached to the corresponding U-shaped magnetic suction plug board (521). The structure of the fixed group (52) on the fine honing oilstone base (15) is the same.

6. A vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner according to claim 1, characterized in that: Both side walls of the outer wall of the honing head body (11) where multiple rectangular sliding holes are pre-opened are provided with two upper and lower rectangular sliding grooves. Magnetic suction sliding plates (111) are slidably installed in the rectangular sliding grooves through compression springs, and circular magnets (112) are embedded at the positions corresponding to the multiple magnetic suction sliding plates (111) on both side walls of the rough honing oilstone base (14) and the fine honing oilstone base (15). The multiple magnetic suction sliding plates (111) are respectively magnetically connected to the corresponding circular magnets (112).

7. A vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner according to claim 1, characterized in that: The outer wall of the rough honing slide bar (12) is slidably connected to the inner wall of the upper circular opening of the honing head body (11) through multiple circumferentially evenly distributed matching sliding strips (42). The outer wall of the fine honing slide bar (13) is slidably connected to the inner wall of the outer wall of the rough honing slide bar (12) through multiple circumferentially evenly distributed matching sliding strips (42). The inner wall of the upper end of the circular opening of the honing head body (11) is chamfered at the positions corresponding to the multiple matching sliding strips (42), and the inner wall of the upper end of the outer wall of the rough honing slide bar (12) is rounded at the positions corresponding to the multiple matching sliding strips (42).

8. A vibration suppression grinding head during the grinding process of the inner hole of a cylinder liner according to claim 6, characterized in that: Annular accommodation grooves are opened on the outer walls of the upper and lower ends of the multiple rough honing oilstone bases (14) and the multiple fine honing oilstone bases (15). Spring rings (16) are movably sleeved in the two upper and lower annular accommodation grooves.

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