Rudder blade inner hole machining device

Abstract

The invention discloses a rudder blade inner hole machining device, and relates to the technical field of rudder blade hole machining, the rudder blade inner hole machining device comprises a main shaft, a main shaft rod driving mechanism is arranged on the main shaft, the two ends of the main shaft are arranged on a large bearing seat and a small bearing seat through bearings respectively, and a plurality of slopes with different tapers are arranged on the outer circle of the main shaft; a transmission mechanism is arranged on each inclined face, a conical face machining assembly is arranged on each transmission mechanism, straight rails are arranged on the portions, on the two sides of the inclined faces, of the main shaft, straight hole machining assemblies are arranged on straight rail sliding blocks, and a plane tool rest and an adjusting cushion block are arranged at the end of the main shaft. The spindle rod driving mechanism drives the spindle to achieve combined machining of taper holes, straight holes, end faces, oil grooves and key grooves with different tapers. The rudder blade machining device is reasonable in structural design, high in universality and high in machining precision, machining of more rudder blades can be covered with a single set of equipment, diversified machining requirements of shipyards are met, repeated investment of the equipment is reduced, and the production cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of rudder blade hole processing, and in particular to a processing device that can be used for processing composite features such as tapered holes, straight holes, oil grooves, sealing grooves and end faces of various specifications in steel structural parts such as rudder blades. Background Art

[0002] With the rapid development of shipbuilding, the variety of ship types and the continuous increase in load capacity have led to the emergence of a wide variety of rudder blades. Take the following two simple and complex products as examples: Figure 1 The parts that need to be processed are the tapered hole, oil groove, and the upper and lower end faces. Figure 2 The parts that need to be processed include tapered holes, oil grooves, straight holes at the large end of tapered holes, straight holes at the small end of tapered holes, and upper and lower end faces. It can be seen that the size, length, taper ratio, oil grooves, and end face forms of the tapered holes in the rudder blades of each ship type are different. The equipment currently on the market for processing these rudder blade inner holes has poor versatility, and rudder blade manufacturing units often have to purchase multiple sets of equipment.

[0003] In terms of the number of equipment, most of the shipyards or rudder blade manufacturing units at home and abroad currently have at least one set of equipment or tooling for each processing taper. Therefore, the purchase of equipment, subsequent maintenance, site occupation, and construction switching have all resulted in a large amount of financial expenditure.

[0004] In terms of equipment form, the mainstream configurations on the market currently use clamp-type and track-type structures. The product defects of the two forms are briefly described as follows: For the clamp type Figure 3 As shown, the inner hole of the clamp and the inclined surface on the outside of the clamp need to be processed. The processing of the inner hole of the clamp is to meet the matching of the main shaft, and the processing of the inclined surface on the outside of the clamp is to meet the processing of the tapered hole. Thus, two processing areas are generated, and the processing errors of the two positions are accumulated. In addition, the size of the spindle rod affects the size of the clamp, which also affects the processing range of the inner hole of the equipment. The installation of the clamp will also indirectly affect the overall stiffness of the spindle, making it difficult to obtain a fairly accurate precision. For the case where there are straight holes at both ends of the tapered hole, the switching work is also a bit cumbersome, and the tooling can only process one specification of tapered hole.

[0005] For parallel track type Figure 4 As shown in the figure, the structure of the rail-type structure and the center arrangement of the screw directly destroys the rigidity of the spindle rod, and the slider cannot be firmly clamped on the parallel rail surface, which directly leads to the loss of machining accuracy. In addition, this type of equipment can only process tapered holes. For the situation where there are straight holes and end surface oil grooves on the tapered hole (similar to Figure 2The straight holes at both ends of the tapered hole) cannot be solved by this type of equipment. The straight hole can only be processed by the method of processing the tapered hole, that is, the processed inner hole is still a conical surface rather than a straight hole. Strictly speaking, it cannot meet the requirements of the drawing at all; and the tooling can only process one specification of tapered hole, so the utilization rate is also a waste of rod material.

[0006] Since the accuracy of the above solution does not meet the standard, the user unit must use a lot of manual labor to blend in the later stage, which causes a lot of waste of equipment funds and time. Summary of the invention

[0007] The purpose of the present invention is to solve the above technical problems and provide a rudder blade inner hole processing device. A single set of equipment can meet the diversified processing needs of rudder blade inner holes in shipyards, with low production cost and high processing accuracy.

[0008] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the present invention is: a rudder blade inner hole processing device, including a main shaft, a main shaft rod driving mechanism is arranged on the main shaft, two ends of the main shaft are respectively arranged on a large bearing seat and a small bearing seat through bearings, the outer circle of the main shaft is provided with a plurality of inclined surfaces with different tapers, each of the inclined surfaces is provided with a transmission mechanism, a tapered surface processing component is arranged on the transmission mechanism, straight rails are arranged on the main shaft on both sides of the inclined surface, a straight hole processing component is arranged on the straight rail slider, a flat tool holder and an adjusting pad are arranged on the end of the main shaft, and the main shaft is driven by the main shaft rod driving mechanism to realize the composite processing of tapered holes with different tapers, straight holes, end faces, oil grooves and keyways.

[0009] Preferably: the transmission mechanism includes a linear guide rail, a ball screw is arranged in the middle of the linear guide rail, a screw shaft is arranged on the ball screw, the ball screw is connected to the feed mechanism through a coupling A, a transmission shaft, and a coupling B, and the direction and rotation speed of the ball screw are controlled by the feed mechanism to control the movement of the tool holder.

[0010] Preferably, the feed mechanism is configured as a feed box or an electric feed.

[0011] Preferably, the spindle rod driving mechanism comprises a sprocket, the sprockets are arranged in opposition through bolts, and the inner hole of the sprocket is provided with a keyway connected to the spindle key.

[0012] Preferably, the conical surface processing assembly comprises a conical surface tool holder, the conical surface tool holder is arranged on a linear guide rail slider, the bottom surface of the conical surface tool holder is flexibly connected to the lead screw, and a conical surface tool holder or a power head is arranged on the conical surface tool holder.

[0013] Preferably: the straight hole processing assembly includes a straight hole tool seat, on which a straight hole tool holder and a plurality of linear bearing holes are arranged, in which a linear bearing is arranged, one end of the traction shaft is arranged on the lead screw, and the other end is arranged in the linear bearing.

[0014] Preferably: the straight hole tool seat is arranged as an embracing structure, including an upper tool seat and a lower tool seat, the ends of the upper tool seat are provided with an upper clamping block and an upper clamping groove, the ends of the lower tool seat are provided with a lower clamping block and a lower clamping groove, the upper clamping block and the lower clamping groove, the lower clamping block and the upper clamping groove are arranged correspondingly, and the upper tool seat and the lower tool seat are cross-fixed on the straight rail slider by bolts.

[0015] Preferably, two ends of the main shaft are provided with a plurality of threaded holes for mounting a planar tool holder.

[0016] Preferably: the planar tool holder includes an arm body, a second lead screw and a second linear guide are provided on the arm body, a second feed mechanism is provided at the end of the arm body, the second feed mechanism is connected to the second lead screw, a planar tool holder is connected to the second linear guide slider via a transition block, and the transition block is flexibly connected to the second lead screw.

[0017] Compared with the traditional structure, the invention has the following beneficial effects: 1. The structural design of the present invention is reasonable. A single set of equipment can meet the diversified processing needs of the shipyard. A single set of equipment can cover the processing of more rudder blades, reducing repeated investment in equipment and saving production costs. The coordinated use of linear rails and lead screws also enables the equipment to obtain extremely high processing accuracy. After processing, no brushing is required, which greatly reduces the time of subsequent processes and shortens the rudder blade manufacturing cycle. It solves many major problems such as the slow progress of subsequent processes caused by the investment of multiple sets of equipment by the unit and poor accuracy.

[0018] 2. The present invention has strong versatility and can realize the processing of composite internal holes such as tapered holes, straight holes, end faces, oil grooves, keyways, etc. By arranging inclined surfaces of various specifications on the main shaft, the processing requirements of tapered holes with different taper specifications can be met; straight rails are arranged on both sides of the inclined surface, and a double-embracing straight hole tool holder is adopted to achieve the purpose of straight hole processing; threaded holes are distributed on the side of the main shaft, and the flat tool holder is threadedly connected to the main shaft, which can be freely adjusted to adapt to the processing of different hole lengths.

[0019] 3. The linear movement of the straight hole processing components can be achieved through the coordinated use of the traction shaft and the linear bearing. The optical axis of the traction shaft cooperates with the linear bearing to compensate for the height difference of the tool movement on the straight surface driven by the lead screw on the inclined surface while traction. The linear bearing uses ball rollers inside and seals at both ends to prevent iron filings from entering. The use of linear bearings greatly reduces the traction resistance and facilitates the implementation of straight hole processing.

[0020] 4. The present invention is easy to maintain, and the processing accuracy does not depend on the accuracy of the rod body shape. Damage to the rod body surface cannot affect the use of the equipment, and the subsequent maintenance cost is reduced. The product has a built-in component backup attribute. When one set is working, the other set is equivalent to a backup. Problems on site can be easily replaced and solved, reducing downtime and not delaying processing progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the tapered hole structure inside the rudder blade of a certain LNG transport ship; Figure 2 This is a schematic diagram of the tapered hole structure inside the rudder blade of an icebreaker; Figure 3 It is a structural schematic diagram of a hoop-type inner hole processing device in the prior art; Figure 4 It is a schematic diagram of the structure of a parallel track type inner hole processing device in the prior art; Figure 5 It is a schematic diagram of the main structure of the present invention; Figure 6 It is a bottom view of the present invention; Figure 7 It is a schematic diagram of various taper hole processing combinations of the present invention; Figure 8 It is a schematic diagram of the straight hole processing combination of the present invention; Fig. 9 It is a schematic diagram of the end surface processing combination of the present invention; Fig.10 This is one of the schematic diagrams of the planar tool holder structure of the present invention; Fig.11 This is the second schematic diagram of the planar tool holder structure of the present invention; Fig.12 This is a schematic diagram of the internal transmission chain of the main shaft of the present invention; In the figure: 1. Feed mechanism, 1A. Tool box, 1B. Electric feed, 2. Spindle rod drive mechanism, 3A. Large bearing seat, 3B. Small bearing seat, 4. Spindle, 5. Straight hole processing assembly, 51. Traction shaft, 52. Straight hole tool holder, 53. Linear bearing, 54. Straight hole tool holder, 541. Upper tool holder, 542. Lower tool holder, 6. Transmission mechanism, 61. Ball screw, 62. Linear guide, 63. Linear guide slide Block, 64. Coupling A, 65. Drive shaft, 66. Coupling B, 67. Screw, 7. Conical surface processing assembly, 71. Conical tool holder, 71B. Power head, 72. Conical tool holder, 8. Plane tool holder, 81. Plane tool holder, 82. Transition block, 83. Second linear guide rail, 84. Second feed mechanism, 85. Second screw, 86. Arm body, 9. Straight rail, 10. Straight rail slider, 11. Adjustment pad. DETAILED DESCRIPTION

[0022] The present invention will be further described below.

[0023] Refer to the attached Figure 5-6 A rudder blade inner hole processing device comprises a main shaft 4, a main shaft rod driving mechanism 2 is arranged on the main shaft 4, two ends of the main shaft 4 are respectively arranged on a large bearing seat 3A and a small bearing seat 3B through bearings, the outer circle of the main shaft 4 is provided with a plurality of inclined surfaces with different tapers, each of the inclined surfaces is provided with a transmission mechanism 6, a conical surface processing component 7 is arranged on the transmission mechanism 6, straight rails 9 are arranged on the main shaft 4 on both sides of the inclined surfaces, a straight hole processing component 5 is arranged on the straight rail slider 10, a flat tool holder 8 is arranged on the end of the main shaft 4, and the main shaft 4 is driven by the main shaft rod driving mechanism 2 to realize the composite processing of conical holes with different tapers, straight holes, end faces, oil grooves and keyways.

[0024] The spindle 4 is the core component of the device. According to different customer requirements and specifications, various specifications of inclined surfaces can be arranged on the outside of the spindle 4. For example, the mainstream in the market is 1:15 conical surface and 1:12 conical surface, but in some special projects there are still 1:18, 1:20 and other taper specifications. This application only uses 1:15 and 1:12 inclined surfaces as an illustration, but the requirements of this application are not limited to these types of conical surfaces, and can also cover the situation where multiple conical surfaces are arranged in an interlaced manner.

[0025] After arranging the inclined surface corresponding to the taper A on the outside of the main shaft 4, the inclined surface corresponding to the cone surface B can be arranged on the opposite side, or the main shaft 4 can be divided into three or four parts to arrange more inclined surfaces, or two or more track surfaces can be arranged on a single side, and space can be left on both sides of the two inclined surfaces on different surfaces to arrange the straight rail 9. In this way, a variety of track arrangements can be realized to cover more processing requirements.

[0026] The spindle 4 has been strictly balanced to avoid affecting the machining accuracy of the equipment due to its own uneven rotation; the grooves arranged on the spindle 4 are all symmetrically designed. If it is necessary to switch to a taper, the rotary feed mechanism 1 can be directly connected and installed; while the spindle 4 is arranged with various inclined surfaces or straight rail surfaces, it still retains arc surfaces in four directions to facilitate the centering adjustment when the final equipment is used; the spindle 4 is provided with reasonable lifting holes and chip removal holes.

[0027] The transmission mechanism 6 includes a linear guide rail 62, a ball screw 61 is arranged in the middle of the linear guide rail 62, and a screw thread 67 is arranged on the ball screw 61, so that a stable operation and transmission platform can be obtained. Fig.12As shown, the feed mechanism 1 transmits power to the ball screw 61 through the coupling B66, the transmission shaft 65, and the coupling A64. The rotation of the ball screw 61 can control the movement of the screw actuator 67, thereby forming a complete transmission chain. The same is true for the arrangement of other inclined surfaces. The ball screw actuator 67 is specially designed to accept side connection (traction shaft 51) and upper connection (conical tool holder 72), so as to meet the movement of inclined and straight surface tools.

[0028] If space is limited, the traction of the slider on the straight rail will be carried out with the help of the flexibility on the inclined rail surface. If there is redundant space, the straight rail can be equipped with a ball screw alone without sharing it with other traction.

[0029] The tool box 1A is mechanically driven and can also be electrically controlled. The ultimate goal is to output different rotation speeds and rotation directions through the internal gear transmission, thereby controlling the direction and rotation speed of the ball screw 61 inside the main shaft 4 connected to it, thereby controlling the movement of the tool holder; the tool box 1A and the main shaft 4 are fixed with only two bolts, which is convenient for quick fixing and disassembly; a fixing hole is provided inside the tool box to facilitate the storage of the operating handle to prevent loss.

[0030] The main shaft rod driving mechanism 2 includes a sprocket, which is arranged by bolts, and the inner hole of the sprocket is provided with a keyway to connect with the main shaft 4. The reducer structure of end-mounted or embracing installation can also be adopted, but considering the narrow construction space of some complex rudder blade inner gears, this transmission method is still a more preferred structure. The main function of the main shaft rod driving mechanism 2 is to drive the rotation of the main shaft 4. The power source of the sprocket can be electric, pneumatic or hydraulic. The description of this application is only an illustration of the power input form, and the specific implementation form is not limited to this.

[0031] The large bearing seat 3A and the small bearing seat 3B are supports for the main shaft 4 and are installed at both ends of the main shaft 4. The overall structure is an upper and lower embracing structure with dustproof protection at both ends to ensure that the interior is not contaminated. The base of the bearing seat is arranged with fixing holes and adjustment holes. The adjustment holes are threaded and installed with bolts. The height and horizontal inclination of the bearing seat can be adjusted by adjusting the height of the bolts. The fixing holes are waist-shaped holes. After the adjustment is completed, the entire bearing seat can be completely fixed with the internal bolts.

[0032] Combined with Figure 8The straight hole processing component 5 includes a straight hole tool holder 54, on which a straight hole tool holder 52 and a plurality of linear bearing holes are arranged. The tool operation range is determined in combination with the actual situation on site, and which bearing hole is selected is determined. A linear bearing 53 or a guide sleeve is arranged in the linear bearing hole. The linear bearing 53 adopts ball rollers inside, and seals are adopted at both ends to prevent iron filings from entering. The use of the linear bearing 53 greatly reduces the traction resistance, which facilitates the implementation of straight hole processing; one end of the traction shaft 51 is arranged on the lead screw 67, and the optical axis part of the other end is arranged in the linear bearing 53. The straight hole tool holder 54 is pulled by the traction shaft 51, thereby realizing the linear motion of the tool holder; the coordinated use of the traction shaft 51 and the linear bearing 53 can make up for the height difference of the tool movement on the straight surface driven by the lead screw on the inclined surface while traction.

[0033] The tool holder adopts a universal design and can be installed on a straight hole tool holder 54 or a conical tool holder 72. A fine-tuning tool holder can also be installed on the tool holder. The height of the tool holder can be flexibly changed according to the aperture size of the workpiece. The attached figure shows only the most basic version. The processing of inner holes of different apertures can be achieved in a stacked or telescopic form.

[0034] The straight hole tool seat 54 is configured as an embracing structure, including an upper tool seat 541 and a lower tool seat 542. The ends of the upper tool seat 541 are spaced apart with an upper clamping block and an upper clamping groove, and the ends of the lower tool seat 542 are spaced apart with a lower clamping block and a lower clamping groove. The upper clamping block and the lower clamping groove, and the lower clamping block and the upper clamping groove are correspondingly configured. The upper tool seat 541 and the lower tool seat 542 are cross-fixed on the straight rail slider 10 by bolts.

[0035] The upper tool holder 541 and the lower tool holder 542 can be used together or separately. The straight hole tool holder 52 can be installed on them, or the tool can be directly installed. Different from the common internal hole tool holders on the market, since the linear rail and the slider themselves have good precision, the tool holder on the device is a simple part that does not require strict matching accuracy, and the processing time and cost are greatly reduced.

[0036] Combined with Figure 7 The conical surface processing assembly 7 includes a conical surface tool holder 72, which is arranged on the linear guide slider 63. The bottom surface of the conical surface tool holder 72 is connected to the lead screw 67. The movement of the conical surface tool holder 72 is realized by the movement of the ball screw 61. The conical surface tool holder 72 is provided with a conical surface tool holder 71 or a power head 71B. When the hole of the workpiece is small, the tool can be directly installed on the end of the conical surface tool holder 72. If a larger hole is encountered, the conical surface tool holder 71 can be connected and then the tool can be installed for processing. Similar to the straight hole tool holder 54, thanks to the accuracy of the linear guide 62, the conical surface tool holder 72 does not require strict matching accuracy, can be quickly manufactured, and saves costs.

[0037] Combined with Figure 9-11 , the two ends of the spindle 4 are provided with a plurality of threaded holes for installing the flat tool holder 8. The installation position of the flat tool holder 8 can be determined according to the actual hole length on site. In some occasions where the size requirements are very compact, an installation position in another direction is reserved at the small head end of the spindle 4. As shown in the figure, above the small head end of the spindle 4, a smaller tool center height can be obtained.

[0038] The plane tool rest 8 includes an arm body 86, on which a second lead screw 85 and a second linear guide rail 83 are arranged, and a second feed mechanism 84 is arranged at the end of the arm body 86, and the second feed mechanism 84 is connected to the second lead screw 85. The second linear guide slider is connected to a plane tool holder 81 through a transition block 82, and the transition block 82 is flexibly connected to the second lead screw. The lead screw and linear rail transmission is adopted, and the head is arranged with a second feed mechanism 84, which is used in conjunction with the adjustment pad 11 according to the size of the workpiece. The structural form of this component abandons the hoop structure commonly used in the market, and the bottom is directly connected to the main shaft 4 by bolts, and the arrangement position is flexibly adjusted according to the thread arrangement pitch of the main shaft 4.

[0039] The height of the adjustment pad 11 can be flexibly controlled, and the heights of the conical tool holder 71, the straight hole tool holder 52 and the plane tool holder 8 can be adjusted according to the actual conditions of the workpiece, thereby achieving perfect adaptation of the equipment to the inner hole radius or flange surface size of the workpiece.

[0040] In specific implementation, the device can realize ① processing of various tapered holes (including oil grooves on the tapered hole walls), ② processing of straight holes, and ③ processing of end faces.

[0041] ① Processing of various tapered holes Taking a single tapered hole processing as an example, when processing a tapered hole, the equipment performs the following operations: Figure 7The combined configuration shown in the figure, at this time, the equipment mainly consists of a feed mechanism 1, a spindle rod driving mechanism 2, a large bearing seat 3A, a small bearing seat 3B, a spindle 4, a conical tool seat 72 and a conical tool holder 71. After the workpiece is fixed on the processing platform, the height and inclination of the large bearing seat 3A and the small bearing seat 3B are determined according to the processing allowance of the hole and the welding deformation. The feed amount and feed direction of the feed mechanism 1 and the height of the tool clamped on the conical tool holder 71 are adjusted. After preparation is completed, the test run can be carried out. When the spindle 4 obtains the power from the spindle rod driving mechanism 2, After the force is applied, it starts to rotate. The feed mechanism 1 transmits the power to the ball screw 61 through the coupling B66, the transmission shaft 65, and the coupling A64. The ball screw 67 is connected to the conical tool holder 72, and the bottom surface of the conical tool holder 72 is fixed to the linear guide slider 63 installed on the surface. At this moment, the conical tool holder 71 and the conical tool holder 72 can obtain axial running power. At the same time, the conical tool holder 71 and the conical tool holder 72 rotate with the main shaft. Therefore, the tool can obtain axial and radial movements, and the purpose of inner hole processing can be achieved. For workpieces with different diameters, it is necessary to insert a cushion block under the conical tool holder 71, so that the processing of tools with different diameters can be achieved.

[0042] Based on the same principle, when processing the annular oil groove on the conical surface, the tool box 1A is switched to neutral. At this moment, the conical tool holder 72 and the conical tool holder 71 cannot obtain the feed of the ball screw 61 in the spindle 4, and will not perform axial movement. Only circular movement when the spindle 4 rotates can be performed. In this way, the inner hole can be processed at a fixed position, and the desired oil groove form can be obtained by manual adjustment or automatic adjustment on the conical tool holder 71.

[0043] The processing of the straight oil groove on the conical surface can be divided into two working conditions. Before construction, the tool box 1A (mechanical feed form) needs to be replaced with a combination of servo motor + reducer (electric feed 1B): I. When the hole diameter of the workpiece is small, the spindle 4 is fixed and does not rotate, and the electric feed 1B controls the rotation of the ball screw 61 according to the set speed, thereby driving the tool on the conical tool holder 71 to move along the generatrix direction of the conical surface, and a straight oil groove can be processed; II. When the workpiece has a large aperture and can accommodate the power head 71B, the conical tool holder 71 can be replaced with the power head 71B fixed on the conical tool holder 72. The power head 71B has a small milling cutter on its head. The oil groove can be processed more quickly by the same feed method. III. The introduction of the power head 71B greatly improves the working efficiency of the equipment. In some cases, manual or electric adjustment of the conical tool holder 72 can fully realize the spatial movement of the tool in the three directions of X, Y, and Z, thereby even processing the keyway in the hole.

[0044] If other specifications of tapered holes need to be processed, the tool box 1A can be rotated to the corresponding position to establish a new transmission chain, thereby performing new tapered surface processing.

[0045] ② Processing of straight holes When machining straight holes (the straight hole machining mentioned here includes straight hole machining through the length and similar Figure 2 The equipment will process the straight holes at both ends of the tapered hole as follows Figure 8 The equipment is configured as shown. At this time, it is mainly composed of a feed mechanism 1, a spindle rod driving mechanism 2, a large bearing seat 3A, a small bearing seat 3B, a spindle 4, a straight hole tool holder 52, a straight hole tool holder 54, a linear bearing 53, and a traction shaft 51. The same as the preparation work before processing the tapered hole, after the workpiece is fixed on the processing platform, the height and inclination of the large bearing seat 3A and the small bearing seat 3B are determined according to the processing allowance of the hole and the welding deformation. The feed amount and feed direction of the feed mechanism 1 and the height of the tool clamped on the straight hole tool holder 52 are adjusted. After preparation is completed, it can be tested (this step is only for the processing of full-length straight holes. If the straight holes at both ends of the tapered hole are processed, these steps are not required because the straight hole The processing is usually carried out after the tapered hole processing is completed). When the spindle 4 obtains power from the spindle rod driving mechanism 2 and starts to rotate, the feed mechanism 1 transmits the power to the ball screw 61 through the transmission shaft and the coupling. The ball screw 67 is connected to the traction shaft 51, and the traction shaft 51 is connected to the straight hole tool holder 54 through the linear bearing 53. As shown in the figure, the upper tool holder 541 and the lower tool holder 542 of the straight hole tool holder 54 are cross-mounted on the straight rail sliders 10 on both sides of the spindle 4, so that the straight hole tool holder 54 can move axially. At the same time, the straight hole tool holder 52 and the straight hole tool holder 54 rotate with the spindle 4, so that the tool can obtain axial and radial movements, and the purpose of inner hole processing can be achieved.

[0046] The upper knife seat 541 and the lower knife seat 542 of the straight hole knife seat 54 can be installed separately or together.

[0047] According to the size of the processed hole diameter, the processing tool can be directly clamped on the upper tool seat 541 and the lower tool seat 542 of the straight hole tool seat 54, or it can be installed on the straight hole tool holder 52. The lower part of the straight hole tool holder 52 can also be connected to the adjustment pad 81 to adjust the height, so as to meet the processing of various small to large holes on the rudder blade.

[0048] For similar Figure 2The sealing groove of the large hole end face may, if space permits, be considered to fix the power head 71B on the straight hole tool holder 54 to process the workpiece faster in order to improve work efficiency.

[0049] ③ End surface processing When machining the planes at both ends of the hole, the machine will follow Fig. 9 As shown in the configuration, the equipment is mainly composed of a spindle rod drive mechanism 2, a large bearing seat 3A, a small bearing seat 3B, a spindle 4, a height adjustment pad 11, and a flat tool holder 8.

[0050] As for holes of different lengths, it can be seen from the figure that there are many threaded holes distributed on the side of the spindle 4. Whether at the large end or the small end of the spindle 4, the flat tool holder 8 can be freely adjusted to adapt to the processing of different hole lengths.

[0051] For holes of different sizes, the device is equipped with one or more adjusting pads 11, thereby adjusting the height of the tool on the flat tool holder 82 to adapt to the processing of holes of different sizes.

[0052] The bottom of the flat tool holder 8 has a key-like protrusion, which cooperates with the groove in the threaded hole opening on the main shaft 4. Therefore, the symmetry axis of the flat tool holder 8 completely coincides with the symmetry axis of the main shaft 4, and there will be no twisting of the symmetry plane.

[0053] The end of the flat tool rest 8 is provided with a feed mechanism, which can be mechanically fed, electrically fed or other energy storage methods. After the second feed mechanism 84 obtains rotational motion from the outside, it drives the second lead screw 85 to rotate, which can drive the second lead screw to move up and down. The tool holder 81 is installed on the second lead screw through the transition block 82, which drives the tool to move along the axial direction of the second lead screw 85. At this moment, the spindle 4 is still driven by the spindle rod driving mechanism 2 to rotate. For the tool, rotational motion and radial motion are obtained, so that the flange end face can be processed.

[0054] In summary, this equipment realizes multiple functions, and its modular design can be matched according to the actual on-site use requirements, which greatly meets the on-site use requirements, taking into account the processing requirements of multiple features such as various cones, straight holes, oil grooves, end faces, sealing grooves, etc., avoiding repeated investment in multiple sets of equipment, and surpassing most products on the market in many aspects such as product processing capacity coverage, comprehensive equipment capital investment, processing accuracy, project progress, friendliness and convenience for subsequent whisking processes, and site occupancy.

[0055] Thanks to the extremely high processing precision and great versatility of the equipment, the products processed by this equipment have gradually been used in projects of ordinary civilian ships, special engineering ships, and non-civilian ships, saving money and time for major rudder blade manufacturing units and shipyards.

[0056] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A rudder blade inner hole machining device, comprising a main shaft (4), characterized in that: The spindle (4) is provided with a spindle rod driving mechanism (2). The two ends of the spindle (4) are respectively arranged on a large bearing seat (3A) and a small bearing seat (3B) through bearings. The outer circle of the spindle (4) is provided with a plurality of inclined surfaces with different tapers. A transmission mechanism (6) is provided on each inclined surface. A conical surface processing component (7) is provided on the transmission mechanism (6). Straight rails (9) are provided on the spindle (4) on both sides of the inclined surface. A straight hole processing component (5) is provided on the straight rail slider (10). A flat tool holder (8) and an adjustment pad (11) are provided at the end of the spindle (4). The spindle (4) is driven by the spindle rod driving mechanism (2) to realize composite processing of conical holes with different tapers, straight holes, end faces, oil grooves, and keyways.

2. The rudder blade inner hole processing device according to claim 1, characterized in that: The transmission mechanism (6) comprises a linear guide rail (62), a ball screw (61) is arranged in the middle of the linear guide rail (62), a screw shaft (67) is arranged on the ball screw (61), and the ball screw (61) is connected to the feed mechanism (1) through a coupling A (64), a transmission shaft (65), and a coupling B (66). The feed mechanism (1) controls the direction and rotation speed of the ball screw (61) to control the movement of the tool holder.

3. The rudder blade inner hole processing device according to claim 2, characterized in that: The feed mechanism (1) is configured as a feed box (1A) or an electric feed (1B).

4. The rudder blade inner hole machining device according to claim 1, characterized in that: The spindle rod driving mechanism (2) comprises a sprocket, the sprockets are arranged in an embraced manner by bolts, and the inner hole of the sprocket is provided with a keyway connected to the spindle (4) by a key.

5. The rudder blade inner hole machining device according to claim 1, characterized in that: The conical surface processing component (7) comprises a conical surface tool holder (72), the conical surface tool holder (72) is arranged on a linear guide rail slider (63), the bottom surface of the conical surface tool holder (72) is connected to a lead screw (67), and a conical surface tool holder (71) or a power head (71B) is arranged on the conical surface tool holder (72).

6. The rudder blade inner hole machining device according to claim 1, characterized in that: The straight hole processing assembly (5) comprises a straight hole tool holder (54), on which a straight hole tool holder (52) and a plurality of linear bearing holes are arranged, in which linear bearings (53) are arranged, and one end of a traction shaft (51) is arranged on a lead screw (67), and the other end is arranged in the linear bearing (53).

7. The rudder blade inner hole machining device according to claim 6, characterized in that: The straight hole tool holder (54) is arranged as an embracing structure, comprising an upper tool holder (541) and a lower tool holder (542); an upper clamping block and an upper clamping groove are arranged at intervals at the end of the upper tool holder (541); a lower clamping block and a lower clamping groove are arranged at intervals at the end of the lower tool holder (542); the upper clamping block and the lower clamping groove, and the lower clamping block and the upper clamping groove are arranged correspondingly; the upper tool holder (541) and the lower tool holder (542) are cross-fixed on the straight rail slider (10) by bolts.

8. The rudder blade inner hole machining device according to claim 1, characterized in that: A plurality of threaded holes are provided at both ends of the main shaft (4) for mounting a planar tool holder (8).

9. The rudder blade inner hole machining device according to claim 1 or 8, characterized in that: The planar tool holder (8) comprises an arm body (86), on which a second lead screw (85) and a second linear guide rail (83) are arranged, and a second feed mechanism (84) is arranged at the end of the arm body (86), the second feed mechanism (84) is connected to the second lead screw (85), and the second linear guide rail slider is connected to a planar tool holder (81) via a transition block (82), and the transition block (82) is flexibly connected to the second lead screw.

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