A deep hole honing machine for landing gear

Abstract

The present invention relates to the field of honing, and in particular to a deep hole honing machine for landing gear, comprising a machine base mechanism for installing, fixing and adjusting the drilling depth, a power mechanism for providing power for drilling, and a fixing mechanism for fixing the landing gear, wherein the power mechanism is installed on one side of the upper end of the machine base mechanism, and a fixing mechanism is arranged on the other side of the upper end of the machine base mechanism corresponding to the position of the power mechanism, and also comprises a mounting mechanism and a grinding mechanism for grinding the deep hole of the landing gear, and an adjusting mechanism for timely adjusting the grinding mechanism when encountering rust spots and obstacles during the grinding process, wherein the mounting mechanism is mounted at the power output end of the power mechanism, a circumferential array of the grinding mechanism is mounted on the outside of the mounting mechanism, and an adjusting mechanism is mounted on the inside of the mounting mechanism, so as to solve the problem of rust spots or dimensional errors encountered during the grinding process, resulting in the technical problem of dimensional processing deviation caused by equipment oscillation instability caused by instantaneous resistance during the honing process.

Description

Technical Field

[0001] The invention relates to the field of honing, and in particular to a deep hole honing machine for landing gear. Background Art

[0002] Honing is a special form of grinding and an efficient finishing method. One or more oilstones installed on the circumference of the honing head are used. The expansion mechanism expands the oilstone radially to press it against the hole wall of the workpiece to produce a certain surface contact. At the same time, the honing head is rotated and reciprocated, and the part does not move; or the honing head only rotates and the workpiece reciprocates, thereby achieving honing.

[0003] In the prior art, a Chinese invention with application publication number CN108115545A discloses a deep hole honing connecting rod, which utilizes the deflection of the rod body to grind the deep hole. However, in such structures and devices, when grinding overly long parts, some parts may have rust spots and processing size deviations due to the material process and storage reasons. Simply eliminating the vibration cannot promptly address the cause of the vibration, and simply increasing the honing time will affect the processing efficiency. Summary of the invention

[0004] The present invention provides a deep hole honing machine for landing gear to solve the technical problem of dimensional processing deviation caused by rust spots or dimensional errors encountered during the honing process, resulting in equipment oscillation instability caused by instantaneous resistance during the honing process.

[0005] A deep hole honing machine for landing gear of the present invention adopts the following technical scheme: it includes a machine base mechanism for installing, fixing and adjusting the drilling depth, a power mechanism for providing power for drilling, and a fixing mechanism for fixing the landing gear, the power mechanism is installed on one side of the upper end of the machine base mechanism, and a fixing mechanism is arranged on the other side of the upper end of the machine base mechanism corresponding to the position of the power mechanism, and also includes a mounting mechanism for grinding the deep hole of the landing gear, a grinding mechanism, and an adjusting mechanism for timely adjusting the grinding mechanism when encountering rust spots and obstacles during the grinding process, the mounting mechanism is installed at the power output end of the power mechanism, the grinding mechanism circumferential array is installed outside the mounting mechanism, and the adjusting mechanism is installed inside the mounting mechanism;

[0006] The mounting mechanism comprises a center frame, an adjusting column is axially slidably connected inside the center frame, and a fixing frame for mounting the grinding mechanism is arranged outside the center frame;

[0007] The grinding mechanism includes a honing tool head and a size adjustment block. The tool holder is installed in a groove of the fixed frame and is slidably connected to the fixed frame. The tool holder is provided with a size adjustment block corresponding to the end face of the center frame. The center frame is provided with a groove for limiting the size adjustment block. The honing tool head is movably arranged on the tool holder, and when the honing tool head slides, the adjustment force is adjusted by the adjustment mechanism through the rotating adjustment component to adjust the rotation of the adjustment column.

[0008] Furthermore, the circular array of tool holders is installed outside the center frame, and a plurality of honing heads are arranged on the outer end face of each tool holder. The adjusting column has a conical structure corresponding to the size adjustment block, and the size adjustment block is a plane corresponding to the end face of the tool holder, and the end face of the size adjustment block corresponding to the adjusting column is a conical surface. When the adjusting column slides axially, it squeezes the size adjustment block, thereby adjusting the size of the tool holder and the honing head during rotational grinding.

[0009] Furthermore, an adjustment frame is formed on the adjustment column at a position corresponding to the size adjustment block, an adjustment cone groove for squeezing the size adjustment block is formed on the adjustment frame, and an extrusion groove is formed on the size adjustment block corresponding to the adjustment cone groove.

[0010] Furthermore, a limit groove for limiting the sliding of the honing head is formed on the tool holder, and the adjustment mechanism is arranged in the limit groove. The adjustment mechanism includes a guide block, and the guide blocks are formed on the end surfaces on both sides of the honing head. A first guide groove is formed in the limit groove corresponding to the position of the guide block, and a second guide groove is formed at the bottom of the limit groove.

[0011] Furthermore, an extrusion oil cylinder is provided on the tool holder in the sliding direction of the honing cutter head, a plurality of the extrusion oil cylinders are interconnected through oil passages, and the extrusion oil cylinders are connected to the rotation adjustment assembly through oil pipes.

[0012] Furthermore, a waste discharge hole for removing impurities is provided at the bottom of the second guide groove.

[0013] Furthermore, the rotation adjustment component is a rotating cylinder.

[0014] Furthermore, the end surface rotation angle range of the adjusting column is 0° to 3°.

[0015] Furthermore, the flip angle range of the honing tool head is 0°-20°.

[0016] Furthermore, the power mechanism includes a main shaft and an adjusting rod, one end of the main shaft is connected to the power output end of the power part, and the other end of the main shaft is connected to a power transmission seat, and the power transmission seat is connected to the center frame through a pin shaft, and the matching position of the power transmission seat and the center frame is a universal joint structure, the main shaft is a hollow structure, and an adjusting rod is connected to the inside of the main shaft, and the adjusting rod is connected to the adjusting pull rod through the adjusting transmission seat, and the adjusting transmission seat is a universal joint structure.

[0017] The beneficial effect of the present invention is as follows: the present invention cooperates with the independent honing head through the grinding mechanism, and when encountering rust spots and large dimensional deviations, the independent honing head is flipped with the cooperation of the adjustment mechanism, thereby increasing the grinding force of the independent area, thereby dealing with rust spots and dimensional deviations. During the flipping process, due to the sudden increase in resistance in individual areas, in order to avoid vibration caused by the sudden increase in resistance, the offset power is transmitted to the extrusion block through the rotating adjustment component, so that the extrusion block is used to extrude the tool holder so that the whole is stretched inside the landing gear, thereby eliminating vibration and improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a deep hole honing machine for landing gear of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the installation mechanism of an embodiment of a deep hole honing machine for landing gear of the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of a mounting mechanism of an embodiment of a deep hole honing machine for a landing gear of the present invention;

[0022] Figure 4 A schematic diagram of the structure of an adjustment column of an embodiment of a deep hole honing machine for a landing gear of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the initial state of a honing cutter head of an embodiment of a deep hole honing machine for landing gear of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a honing cutter head in a flipping state of an embodiment of a deep hole honing machine for a landing gear of the present invention;

[0025] Figure 7 It is a schematic diagram of the first guide groove structure of an embodiment of a deep hole honing machine for a landing gear of the present invention;

[0026] Figure 8 It is a left view of the initial state of the honing cutter head of the embodiment of the deep hole honing machine for landing gear of the present invention;

[0027] Fig. 9 The present invention is a left side view of a deep hole honing machine for landing gear in which the honing cutter head is in a flipped state.

[0028] In the figure: 1. base mechanism; 2. power mechanism; 3. fixing mechanism; 4. installation mechanism; 5. grinding mechanism; 21. main shaft; 22. adjusting rod; 23. power transmission seat; 24. adjusting transmission seat; 41. center frame; 42. fixing frame; 43. adjusting column; 44. adjusting pull rod; 51. tool holder; 511. limiting groove; 512. second guide groove; 513. waste discharge hole; 52. honing tool head; 53. size adjustment block; 531. extrusion groove; 54. adjusting frame; 541. adjusting cone groove; 55. rotation adjustment assembly; 61. guide block; 62. extrusion cylinder; 63. first guide groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] An embodiment of a deep hole honing machine for a landing gear of the present invention is as follows Figures 1 to 9 As shown, it includes a base mechanism 1 for installing, fixing and adjusting the drilling depth, a power mechanism 2 for providing power for drilling, and a fixing mechanism 3 for fixing the landing gear. The power mechanism 2 is installed on one side of the upper end of the base mechanism 1, and the fixing mechanism 3 is arranged on the other side of the upper end of the base mechanism 1 at a position corresponding to the power mechanism 2. It also includes a mounting mechanism 4 for grinding the deep hole of the landing gear, a grinding mechanism 5, and an adjusting mechanism for timely adjusting the grinding mechanism 5 when encountering rust spots and obstacles during the grinding process. The mounting mechanism 4 is installed at the power output end of the power mechanism 2, the grinding mechanism 5 is installed in a circumferential array outside the mounting mechanism 4, and the adjusting mechanism is installed inside the mounting mechanism 4;

[0031] The mounting mechanism 4 includes a center frame 41, an adjusting column 43 is axially slidably connected inside the center frame 41, and a fixing frame 42 for mounting the grinding mechanism 5 is arranged outside the center frame 41;

[0032] The grinding mechanism 5 includes a honing head 52 and a size adjustment block 53. The tool holder 51 is installed in a groove of the fixed frame 42, and the tool holder 51 is slidably connected to the fixed frame 42. The end face of the tool holder 51 corresponding to the center frame 41 is provided with a size adjustment block 53. The center frame 41 is provided with a groove for limiting the size adjustment block 53. The honing head 52 is movably arranged on the tool holder 51, and when the honing head 52 slides, the adjustment force is adjusted through the adjustment mechanism through the rotating adjustment component 55 to adjust the rotation of the adjustment column 43.

[0033] Further, such as Figure 3 As shown, a circular array of tool holders 51 is installed outside the center frame 41, and a plurality of honing bits 52 are arranged on the outer end face of each tool holder 51. The portion of the adjusting column 43 corresponding to the size adjusting block 53 is a conical structure, the end face of the size adjusting block 53 corresponding to the tool holder 51 is a plane, and the end face of the size adjusting block 53 corresponding to the adjusting column 43 is a conical surface. When the adjusting column 43 slides axially, the size adjusting block 53 is squeezed, thereby adjusting the size of the tool holder 51 and the honing bit 52 during rotational grinding.

[0034] Further, such as Figure 4 As shown, an adjustment frame 54 is formed on the adjustment column 43 at a position corresponding to the size adjustment block 53, and an adjustment cone groove 541 for squeezing the size adjustment block 53 is formed on the adjustment frame 54. The size adjustment block 53 is formed with an extrusion groove 531 corresponding to the adjustment cone groove 541. When the adjustment column 43 rotates, the adjustment cone groove 541 will produce a dislocation extrusion on the extrusion groove 531, so that the size adjustment block 53 expands outward, resulting in an increase in the pressure between the honing head 52 and the inner wall of the landing gear.

[0035] Further, such as Figure 7 As shown, a limiting groove 511 for limiting the sliding of the honing head 52 is formed on the tool holder 51, and an adjusting mechanism is arranged in the limiting groove 511. The adjusting mechanism includes a guide block 61, and the guide block 61 is formed on the end surfaces on both sides of the honing head 52. A first guide groove 63 is formed in the limiting groove 511 corresponding to the position of the guide block 61, and a second guide groove 512 is formed at the bottom of the limiting groove 511.

[0036] Furthermore, an extrusion cylinder 62 is provided on the tool holder 51 in the sliding direction of the honing head 52. Several extrusion cylinders 62 are interconnected through oil channels, and the extrusion cylinders 62 are connected to the rotation adjustment component 55 through oil pipes. When the honing head 52 flips and slides, the extrusion cylinders 62 will be squeezed, so that the pressure inside the interconnected extrusion cylinders 62 is transmitted to the rotation adjustment component 55, so that the rotation adjustment component 55 drives the fixed frame 42 to rotate.

[0037] Furthermore, a waste discharge hole 513 for discharging impurities is provided at the bottom of the second guide groove 512 to avoid accumulation of residues, and the impurities can be squeezed out by sliding the honing head 52 .

[0038] Furthermore, the rotation adjustment component 55 is a rotation cylinder.

[0039] Furthermore, the end surface rotation angle of the adjustment column 43 ranges from 0° to 3°.

[0040] Furthermore, the turning angle of the honing tool head 52 ranges from 0° to 20°.

[0041] Further, such as Figure 3 As shown, the power mechanism 2 includes a main shaft 21 and an adjusting rod 22. One end of the main shaft 21 is connected to the power output end of the power component, and the other end of the main shaft 21 is connected to a power transmission seat 23. The power transmission seat 23 is connected to the center frame 41 through a pin shaft. The matching position of the power transmission seat 23 and the center frame 41 is a universal joint structure. The main shaft 21 is a hollow structure, and the adjusting rod 22 is connected to the inside of the main shaft 21. The adjusting rod 22 is connected to the adjusting pull rod 44 through the adjusting transmission seat 24, and the adjusting transmission seat 24 is a universal joint structure.

[0042] The working principle is as follows: according to the grinding size required, the position of the adjusting rod 22 is adjusted, so that the adjusting column 43 and the adjusting frame 54 in the initial position support the honing head 52, so that the honing head 52 supports the tool holder 51 and the grinding size of the honing head 52;

[0043] After the power part is started, the power transmission of the main shaft 21, the power transmission seat 23, and the center frame 41 causes the six sets of tool holders 51 and the honing tool heads 52 to start rotating to grind the inner wall of the landing gear. Since the grinding speed in the art is not high and coolant and grinding fluid are required, the tool holder 51 rotates slowly in the wall of the cylinder to grind.

[0044] When the honing head 52 in a certain area contacts rust spots and has a large size deviation, the friction force will cause the honing head 52 to slide to the side opposite to the rotation direction, and since the extrusion cylinder 62 provides hydraulic damping, the honing head 52 will slowly slide and turn over under the restriction of the guide block 61 and the first guide groove 63, and the relative size of the honing head 52 will increase during the turning process, so the grinding force of the honing head 52 on the rust spots will also increase, thereby improving the grinding effect on the rust spots;

[0045] At the same time, due to the sudden increase in resistance at a single position, there is a risk of vibration. At this time, the extrusion force exerted on the extrusion cylinder 62 is transmitted to the rotation adjustment component 55 through the oil pipe. The rotation adjustment component 55 drives the adjustment column 43 to rotate. Since the adjustment cone groove 541 will be squeezed with the inclined surface of the extrusion groove 531, the adjustment rod 44 will not move at this time. After the extrusion groove 531 is squeezed, all the size adjustment blocks 53 will expand slightly to the outside, thereby achieving the extrusion force of the overall structure with the cylinder wall, thereby eliminating vibration, ensuring the stability of the grinding process, and avoiding the vibration from being transmitted to the main shaft 21, causing the vibration of the excessively long main shaft 21, and avoiding external interference. When the grinding is completed, the support spring inside the rotation adjustment component 55 supports the reset, and the honing head 52 slowly resets.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep hole honing machine for landing gear, comprising a base mechanism (1) for mounting, fixing and adjusting the drilling depth, a power mechanism (2) for providing power for drilling, and a fixing mechanism (3) for fixing the landing gear, wherein the power mechanism (2) is mounted on one side of the upper end of the base mechanism (1), and the fixing mechanism (3) is arranged on the other side of the upper end of the base mechanism (1) at a position corresponding to the power mechanism (2), and characterized in that: It also includes a mounting mechanism (4) for grinding the deep holes of the landing gear, a grinding mechanism (5), and an adjustment mechanism for timely adjusting the grinding mechanism (5) when encountering rust spots and obstacles during the grinding process, wherein the mounting mechanism (4) is mounted at the power output end of the power mechanism (2), the grinding mechanisms (5) are mounted in a circular array outside the mounting mechanism (4), and the adjustment mechanism is mounted inside the mounting mechanism (4); The mounting mechanism (4) comprises a center frame (41), an adjusting column (43) is axially slidably connected inside the center frame (41), and a fixing frame (42) for mounting the grinding mechanism (5) is arranged outside the center frame (41); The grinding mechanism (5) comprises a honing tool head (52) and a size adjustment block (53); the tool holder (51) is installed in a groove of the fixed frame (42), and the tool holder (51) is slidably connected to the fixed frame (42); the tool holder (51) is provided with a size adjustment block (53) at an end surface corresponding to the center frame (41); the center frame (41) is provided with a groove for limiting the size adjustment block (53); the honing tool head (52) is movably arranged on the tool holder (51), and when the honing tool head (52) slides, the adjustment mechanism transmits an adjustment force to adjust the rotation of the adjustment column (43) through a rotating adjustment component (55); A limiting groove (511) for limiting the sliding of the honing cutter head (52) is formed on the tool holder (51), the adjustment mechanism is arranged in the limiting groove (511), and the adjustment mechanism comprises a guide block (61), the guide block (61) is formed on both side end surfaces of the honing cutter head (52), a first guide groove (63) is formed in the limiting groove (511) at a position corresponding to the guide block (61), and a second guide groove (512) is formed at the bottom of the limiting groove (511); an extrusion cylinder (62) is arranged on the tool holder (51) in the sliding direction of the honing cutter head (52), a plurality of the extrusion cylinders (62) are interconnected through an oil channel, and the extrusion cylinders (62) are connected to the rotation adjustment component (55) through an oil pipe.

2. A deep hole honing machine for landing gear according to claim 1, characterized in that: The tool holder (51) is installed in a circular array outside the center frame (41); a plurality of honing heads (52) are arranged on the outer end surface of each tool holder (51); the adjusting column (43) has a conical structure at a portion corresponding to the size adjustment block (53); the end surface of the size adjustment block (53) corresponding to the tool holder (51) is a plane; the end surface of the size adjustment block (53) corresponding to the adjusting column (43) is a conical surface; when the adjusting column (43) slides axially, it squeezes the size adjustment block (53), thereby adjusting the size of the tool holder (51) and the honing head (52) during rotational grinding.

3. A deep hole honing machine for landing gear according to claim 2, characterized in that: An adjustment frame (54) is formed on the adjustment column (43) at a position corresponding to the size adjustment block (53); an adjustment cone groove (541) for squeezing the size adjustment block (53) is formed on the adjustment frame (54); and an extrusion groove (531) is formed on the size adjustment block (53) corresponding to the adjustment cone groove (541).

4. A deep hole honing machine for landing gear according to claim 3, characterized in that: The bottom of the second guide groove (512) is provided with a waste discharge hole (513) for discharging impurities.

5. A deep hole honing machine for landing gear according to claim 4, characterized in that: The rotation adjustment component (55) is a rotation cylinder.

6. A deep hole honing machine for landing gear according to claim 5, characterized in that: The end surface rotation angle range of the adjustment column (43) is 0° to 3°.

7. A deep hole honing machine for landing gear according to claim 6, characterized in that: The turning angle range of the honing tool head (52) is 0°-20°.

8. The deep hole honing machine for landing gear according to claim 1, characterized in that: The power mechanism (2) comprises a main shaft (21) and an adjusting rod (22); one end of the main shaft (21) is connected to the power output end of the power member; the other end of the main shaft (21) is connected to a power transmission seat (23); the power transmission seat (23) is connected to the center frame (41) via a pin shaft; the power transmission seat (23) and the center frame (41) are matched at a position to form a universal joint structure; the main shaft (21) is a hollow structure; an adjusting rod (22) is connected to the inside of the main shaft (21); the adjusting rod (22) is connected to an adjusting pull rod (44) via an adjusting transmission seat (24); and the adjusting transmission seat (24) is a universal joint structure.

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