Tool head seat structure and installation method of longitudinal and transverse inertia debugging device

Abstract

The present application relates to a kind of tool bit holder structure and longitudinal, transverse inertia debugging device installation method, including tool bit and swing frame, tool bit is installed on swing frame, tool bit is the block structure of cross section inverted triangle, the lower edge of tool bit is straight blade, swing frame is centered on blade swing;It also includes rotating seat assembly and support frame, rotating seat assembly lower part is fixedly installed on the upper end of support frame, the upper part of rotating seat assembly is installed for supporting the tool seat of tool bit, tool seat can swing relative to support frame, the swing track of tool seat is cylindrical cam and the central axis of cylindrical cam is perpendicular to blade, tool seat is block structure, tool seat upper surface is provided with the blade slot of opening upward, blade slot cross section is V-shaped, blade slot bottom and blade cooperate.Thereby blade and tool seat are completely contacted, avoid stress concentration phenomenon, prolong the service life of blade and tool seat, improve the precision of ship model rotational inertia parameter test.

Description

Technical Field

[0001] This invention relates to the field of ship model testing technology, and in particular to a method for installing a cutter head and cutter holder structure and a longitudinal and transverse inertia adjustment device. Background Technology

[0002] Before conducting tank tests, ship models need to have their center of gravity and moment of inertia measured and adjusted to meet the technical parameters required for the test, ensuring the accuracy of the test data. Currently, inertia adjustment devices are generally based on inertia frames, using either knife-edge holders or bearings for rotation. At smaller rotation angles, knife-edge holders are more sensitive than bearing-type frames.

[0003] Existing cutting edges and tool holders are generally fixedly mounted on the swing frame and support frame respectively. The swing frame swings by the swing of the cutting edge on the tool holder. Due to uneven ground, the swing frame and support frame themselves have processing and installation accuracy errors or deformation during use, the cutting edge and tool holder cannot make complete contact. This results in stress concentration at the contact point between the cutting edge and tool holder, severe wear, and a short service life for the cutting edge and tool holder. It also affects the accuracy of the ship model rotational inertia parameter test. Summary of the Invention

[0004] In response to the shortcomings of the existing production technology, the applicant provides a method for installing a cutter head and cutter holder structure and longitudinal and lateral inertia adjustment devices, thereby ensuring complete contact between the cutter head and cutter holder, avoiding stress concentration, extending the service life of the cutter head and cutter holder, and improving the accuracy of ship model rotational inertia parameter testing.

[0005] The technical solution adopted in this invention is as follows:

[0006] A cutter head and cutter holder structure includes a cutter head and a swing frame. The cutter head is mounted on the swing frame. The cutter head is a block structure with an inverted triangular cross-section. The lower edge of the cutter head is a straight cutting edge. The swing frame swings around the cutting edge as the center line.

[0007] It also includes a rotating base assembly and a support frame. The lower part of the rotating base assembly is fixedly installed on the upper end of the support frame. The upper part of the rotating base assembly is fitted with a tool holder for supporting the cutting head. The tool holder can swing relative to the support frame. The swing trajectory of the tool holder is a cylindrical arc surface and the central axis of the cylindrical arc surface is perpendicular to the cutting edge. The tool holder is a block structure. The upper surface of the tool holder is provided with an upward-opening cutting groove. The cross-section of the cutting groove is V-shaped, and the bottom of the cutting groove mates with the cutting edge.

[0008] As a further improvement to the above technical solution:

[0009] The structure of the rotating base assembly is as follows: it includes a rotating base mounted on a support frame, a rotating shaft is provided on the upper part of the rotating base, a blade holder is mounted on the upper part of the rotating shaft, the bottom of the blade holder is rotatably engaged with the rotating shaft, the sides of the blade holder and the rotating base are engaged with the two ends of the rotating shaft, and the axis of the rotating shaft is perpendicular to the blade.

[0010] It also includes two retaining rings that are concentrically arranged with the rotating shaft. The retaining rings are located on both sides of the tool holder. The tool holder and the rotating base cooperate with the retaining rings. The retaining rings are used to limit the relative positions of the two sides of the tool holder and the rotating base.

[0011] The bottom of the tool holder is provided with an upper half groove that runs through both sides of the tool holder. The upper half groove is a semi-cylindrical groove structure with an opening facing downwards. The upper half groove is engaged with the upper part of the rotating shaft. The outer surface of the tool holder at both ends of the upper half groove along the axial direction is provided with an upper half ring. The upper half ring is a semi-annular boss structure. The inner ring of the upper half ring is concentric with the upper half groove, and the outer ring of the upper half ring is engaged with the inner ring of the annular retaining ring.

[0012] The rotating base has the following structure: a base body with a block structure, a lower half-groove extending through both sides of the rotating base at the upper part, the lower half-groove being a semi-cylindrical groove structure with an upward opening, the lower half-groove engaging with the upper and lower parts of the rotating shaft, a lower half-ring being provided on the outer surface of the base body at both ends of the lower half-groove along the axial direction, the lower half-ring being a semi-annular boss structure, the inner ring of the lower half-ring being concentric with the lower half-groove; and the outer ring of the lower half-ring engaging with the inner ring of the annular retaining ring.

[0013] The rotating shaft has a columnar structure. One end of the rotating shaft is provided with a stop head, which is a block structure. The same side of the tool holder and the rotating base mates with the stop head. The other end of the rotating shaft is located outside the tool holder and the rotating base and is provided with a retaining ring. The other side of the tool holder and the rotating base mates with the retaining ring.

[0014] The rotating base assembly has the following structure: it includes a rotating groove mounted on a support frame, the upper surface of which is provided with an upward-opening groove, the groove being a semi-cylindrical groove; it also includes a protrusion disposed at the bottom of the blade holder, the protrusion being a semi-cylindrical block structure that mates with the groove, and the axis of the protrusion being perpendicular to the blade.

[0015] It also includes a plate-shaped rotating plate with protrusions on its lower surface, and the rotating plate is connected to the tool holder by fasteners.

[0016] A method for installing a longitudinal inertia adjustment device includes the following steps:

[0017] Step 1: Install the first support column at intervals on the ground, with the axis of the first support column set vertically;

[0018] Step 2: Install the rotating seat assembly on the upper part of the first support column;

[0019] Step 3: Install the tool holder on the rotating seat assembly so that the tool holder can swing relative to the first support column. The swing trajectory of the tool holder is a cylindrical arc surface.

[0020] Step 4: Install connectors symmetrically at the upper end of the longitudinal inertia frame. The cross-section of the connector is an inverted L-shape. Then, install the cutter head on the lower surface of the upper end of the connector. The lower edge of the cutter head is a straight cutting edge. The vertical plane where the two connectors are located is parallel to the cutting edge.

[0021] Step 5: Use hoisting tools to place the longitudinal inertia frame with the cutter head between the first support columns, and align the cutting edge of the lower part of the cutter head with the cutting groove of the upper part of the cutter holder. The cross-section of the cutting groove is V-shaped, and the central axis of the swing trajectory of the cutter holder is perpendicular to the cutting edge. The longitudinal inertia frame is used to place the ship model.

[0022] Step 6: After the longitudinal inertia frame is freed from the hoisting tool, the cutter head exerts downward pressure on the cutter holder under the weight of the longitudinal inertia frame itself. After the cutter holder swings, the cutting edge comes into contact with the bottom of the cutter groove, and the longitudinal inertia frame swings around the cutting edge as the center line.

[0023] Step 7: A laser displacement sensor is installed on one side of the longitudinal inertia frame. The position of the laser displacement sensor is fixed by a mounting bracket set on the ground.

[0024] A method for installing a lateral inertia adjustment device includes the following steps:

[0025] Step 1: Set up four second support columns at intervals on the ground. The four second support columns are arranged in a rectangular array and the axis of the second support columns is set vertically.

[0026] Step 2: Install rectangular frame support hangers at the middle of both the first and second crossbeams. Install a rotating seat assembly on the lower inner surface of the rectangular frame of the support hanger. Install a tool holder on the upper part of the rotating seat assembly, allowing the tool holder to swing relative to the support hanger. The swing trajectory of the tool holder is a cylindrical arc surface.

[0027] The upper ends of the two second support columns are connected by the first crossbeam, and the other two second support columns are connected by the second crossbeam. The first crossbeam and the second crossbeam are set in parallel.

[0028] Step 3: Install the cutter head below the middle of the swing beam. The lower edge of the cutter head is a straight cutting edge, which is perpendicular to the axis of the swing beam. Pass the swing beam through the rectangular frame of the support bracket so that the cutter head corresponds to the cutter holder. The cross-section of the cutter groove is V-shaped, and the central axis of the swing trajectory of the cutter holder is perpendicular to the cutting edge.

[0029] Step 4: Place the transverse inertia frame between the second support columns, connect both ends of the two swing beams to the upper surface of the transverse inertia frame at the same time, and place the cutting edge of the lower part of the cutter head in the cutting groove of the upper part of the cutter holder. The transverse inertia frame is used to place the ship model.

[0030] Step 5: After lowering the swing beam with the cutter head and the transverse inertia frame as a whole, the cutter head exerts downward pressure on the cutter holder under the weight of the transverse inertia frame itself. After the cutter holder swings, the cutting edge comes into contact with the bottom of the cutter groove; the transverse inertia frame swings around the cutting edge as the center line.

[0031] Step 6: A laser displacement sensor is installed on one side of the transverse inertia frame. The position of the laser displacement sensor is fixed by a mounting bracket set on the ground.

[0032] The beneficial effects of this invention are as follows:

[0033] This invention features a compact and reasonable structure and is easy to operate. By incorporating a rotating seat assembly in the support frame that allows the tool holder to swing relative to the support frame, the cutting edge of the tool head and the cutting groove of the tool holder are in complete contact. This avoids stress concentration caused by the limited precision of the frame structure, which prevents the cutting edge and the cutting groove from making good contact. This extends the service life of the tool head and the tool holder and improves the accuracy of the ship model rotational inertia parameter test.

[0034] Furthermore, the present invention also has the following advantages:

[0035] (1) By setting a rotating shaft that cooperates with both the tool holder and the rotating base, the tool holder can swing around the axis of the rotating shaft as the center line. The swing trajectory is a cylindrical arc surface, which is simple in structure.

[0036] (2) By setting a protrusion at the bottom of the tool holder, it swings in the groove of the rotating groove to achieve the swing with the axis of the protrusion as the center line, while limiting the relative position of the tool holder in the rotating groove. The structure is simple.

[0037] (3) A laser displacement sensor is used instead of a sensor with a signal line, which avoids the angle deflection caused by the quality of the signal line.

[0038] (4) A device for adjusting lateral inertia is provided, which makes the data for adjusting the inertia of the ship model more comprehensive. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0040] Figure 2 for Figure 1 Exploded view.

[0041] Figure 3 This is a schematic diagram of the tool holder of the present invention.

[0042] Figure 4 This is a front view of the tool holder of the present invention.

[0043] Figure 5 This is a schematic diagram of the rotating base of the present invention.

[0044] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0045] Figure 7 for Figure 6 Exploded view.

[0046] Figure 8 for Figure 6 An exploded view (from another perspective).

[0047] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the present invention.

[0048] Figure 10 for Figure 9 Enlarged view of point A in the middle.

[0049] Figure 11 This is a schematic diagram of the installation structure of the first support column and connector of the present invention.

[0050] Figure 12 for Figure 11 Enlarged view of section B in the middle.

[0051] Figure 13 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0052] Figure 14 for Figure 13 Enlarged view of point C.

[0053] Figure 15 for Figure 13 Side view (section view).

[0054] Figure 16 for Figure 13 Enlarged view of point D in the middle.

[0055] Among them: 1. Cutting head; 10. Cutting edge; 2. Fixing plate; 20. Mounting slot; 3. Cutting holder; 30. Cutting edge groove; 302. Upper groove; 303. Upper ring;

[0056] 41. Snap ring; 42. Retaining ring; 43. Rotating shaft; 431. Stop head; 44. Rotating base; 4401. Base body; 4402. Lower groove; 4403. Lower ring; 4404. Stud;

[0057] 51. Protrusion; 5101. Rotating plate; 52. Rotating groove; 5201. Groove;

[0058] 6. Longitudinal inertia frame; 60. Ship model; 61. First support column; 62. Connector; 63. Laser displacement sensor; 64. Mounting bracket;

[0059] 7. Lateral inertia frame; 71. Second support column; 72. First crossbeam; 73. Second crossbeam; 74. Support hanger; 75. Swinging crossbeam. Detailed Implementation

[0060] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0061] like Figures 1-5 As shown, the cutter head and cutter holder structure of Embodiment 1 includes a cutter head 1 and a swing frame. The cutter head 1 is mounted on the swing frame. The cutter head 1 is a block structure with an inverted triangular cross-section. The lower edge of the cutter head 1 is a straight cutting edge 10. The swing frame swings around the cutting edge 10 as the center line.

[0062] It also includes a rotating seat assembly and a support frame. The lower part of the rotating seat assembly is fixedly installed on the upper end of the support frame. The upper part of the rotating seat assembly is fitted with a tool holder 3 for supporting the cutter head 1. The tool holder 3 can swing relative to the support frame. The swing trajectory of the tool holder 3 is a cylindrical arc surface and the central axis of the cylindrical arc surface is perpendicular to the cutting edge 10. The tool holder 3 is a block structure. The upper surface of the tool holder 3 is provided with an upward-opening cutting groove 30. The cross-section of the cutting groove 30 is V-shaped, and the bottom of the cutting groove 30 is fitted with the cutting edge 10.

[0063] The cutter head and cutter holder structure also includes a fixing plate 2, which is a block structure. The upper surface of the fixing plate 2 is detachably connected to the swing frame by fasteners. The lower part of the fixing plate 2 is provided with a downward-facing mounting groove 20, which mates with the upper part of the cutter head 1. The mounting groove 20 that mates with the cutter head 1 facilitates the disassembly and replacement of the cutter head 1.

[0064] The support frame is used to support the swing frame. The swing frame swings relative to the vehicle frame through the cooperation of the cutter head 1 and the cutter holder 3. When the swing frame with the cutter head 1 is placed on the support frame, after the cutting edge 10 of the cutter head 1 contacts the cutting groove 30 of the cutter holder 3, the cutter holder 3 installed on the rotating seat assembly swings under the gravity of the swing frame, so that the cutting edge 10 is in contact with the bottom of the cutting groove 30, so that the cutting edge 10 is evenly stressed and the swing frame swings around the cutting edge 10 as the center line, making the swing smoother.

[0065] By incorporating a rotating seat assembly that allows the tool holder 3 to swing relative to the support frame, the cutting edge 10 of the tool head 1 and the cutting groove 30 of the tool holder 3 are brought into complete contact. This avoids stress concentration caused by the limited precision of the frame structure, which prevents the cutting edge 10 and the cutting groove 30 from making good contact. This extends the service life of the tool head 1 and the tool holder 3 and improves the accuracy of the ship model rotational inertia parameter test.

[0066] The structure of the rotating base assembly is as follows: it includes a rotating base 44 mounted on a support frame, a rotating shaft 43 is provided on the upper part of the rotating base 44, a tool holder 3 is mounted on the upper part of the rotating shaft 43, the bottom of the tool holder 3 is rotatably engaged with the rotating shaft 43, the sides of the tool holder 3 and the rotating base 44 are engaged with the two ends of the rotating shaft 43, and the axis of the rotating shaft 43 is perpendicular to the blade 10.

[0067] The sides of the tool holder 3 and the rotating base 44 are engaged with the two ends of the rotating shaft 43. Only one set of the side angles changes while ensuring that the tool holder 3 can rotate around the rotating shaft 43 relative to the rotating base 44. The other set of side angles between the tool holder 3 and the rotating base 44 does not change, ensuring that the tool holder 3 will not detach from the rotating base 44 from the side.

[0068] By setting a rotating shaft 43 that cooperates with both the tool holder 3 and the rotating base 44, the tool holder 3 can swing around the axis of the rotating shaft 43 as the center line, and the swing trajectory is a cylindrical arc surface, which is simple in structure.

[0069] The rotating base 44 is provided with a stud 4404 at the bottom. The rotating base 44 is fixed to the support frame by the cooperation of the stud 4404 and the nut. Alternatively, the rotating base 44 can be installed on the support frame by welding.

[0070] It also includes a retaining ring 41 concentrically arranged with the rotating shaft 43. There are two retaining rings 41, which are located on both sides of the tool holder 3. The tool holder 3 and the rotating base 44 cooperate with the retaining rings 41. The retaining rings 41 are used to limit the relative positions of the tool holder 3 and the rotating base 44.

[0071] The bottom of the tool holder 3 is provided with an upper half groove 302 that runs through both sides of the tool holder 3. The upper half groove 302 is a semi-cylindrical groove structure with an opening facing downward. The upper half groove 302 is engaged with the upper part of the rotating shaft 43. The outer surface of the tool holder 3 at both ends of the upper half groove 302 along the axial direction is provided with an upper half ring 303. The upper half ring 303 is a semi-annular boss structure. The inner ring of the upper half ring 303 is concentric with the upper half groove 302. The outer ring of the upper half ring 303 is engaged with the inner ring of the annular structure retaining ring 41.

[0072] The structure of the rotating base 44 is as follows: it includes a base body 4401 with a block structure. The upper part of the rotating base 44 is provided with a lower half groove 4402 that runs through both sides of the rotating base 44. The lower half groove 4402 is a semi-cylindrical groove structure with an upward opening. The lower half groove 4402 is engaged with the upper part and the lower part of the rotating shaft 43. The outer surface of the base body 4401 at both ends of the lower half groove 4402 is provided with a lower half ring 4403. The lower half ring 4403 is a semi-annular boss structure. The inner ring of the lower half ring 4403 is concentric with the lower half groove 4402. The outer ring of the lower half ring 4403 is engaged with the inner ring of the annular retaining ring 41.

[0073] The upper half ring 303 and the lower half ring 4403 are vertically aligned and have the same outer diameter. The upper half ring 303 and the lower half ring 4403 are fitted with retaining rings 41.

[0074] The rotating shaft 43 has a columnar structure. One end of the rotating shaft 43 is provided with a stop 431, which is a block structure. The same side of the tool holder 3 and the rotating base 44 is engaged with the stop 431. The other end of the rotating shaft 43 is located outside the tool holder 3 and the rotating base 44 and is provided with a retaining ring 42. The other side of the tool holder 3 and the rotating base 44 is engaged with the retaining ring 42.

[0075] In the above structure, when the tool holder 3 is horizontally set, there is a gap between the tool holder 3 and the rotating base 44 to ensure the rotation space of the tool holder 3; the retaining ring 41 cooperates with the virtual cylindrical structure composed of the upper half ring 303 and the lower half ring 4403 to achieve side limit on both sides of the tool holder 3 and the rotating base 44, and the tool holder 3 and the rotating base 44 will not separate from each other while rotating relative to each other, further making the structure of the rotating base assembly more stable; the stop head 431 and the rotating shaft 43 are an integral structure, and the retaining ring 42 is connected to the rotating shaft 43 by a detachable connection structure such as threaded connection, snap-fit ​​or transition fit. The stop head 431 and the retaining ring 42 are specific structures used to limit the relative positions of the tool holder 3 and the rotating base 44 on both sides of the rotating shaft 43.

[0076] like Figures 6-8 As shown, the blade head and blade holder structure of Embodiment 2 includes a blade head 1 and a swing frame. The blade head 1 is mounted on the swing frame. The blade head 1 is a block structure with an inverted triangular cross-section. The lower edge of the blade head 1 is a straight blade 10. The swing frame swings around the blade 10 as the center line.

[0077] It also includes a rotating seat assembly and a support frame. The lower part of the rotating seat assembly is fixedly installed on the upper end of the support frame. The upper part of the rotating seat assembly is fitted with a tool holder 3 for supporting the cutter head 1. The tool holder 3 can swing relative to the support frame. The swing trajectory of the tool holder 3 is a cylindrical arc surface and the central axis of the cylindrical arc surface is perpendicular to the cutting edge 10. The tool holder 3 is a block structure. The upper surface of the tool holder 3 is provided with an upward-opening cutting groove 30. The cross-section of the cutting groove 30 is V-shaped, and the bottom of the cutting groove 30 is fitted with the cutting edge 10.

[0078] By incorporating a rotating seat assembly that allows the tool holder 3 to swing relative to the support frame, the cutting edge 10 of the tool head 1 and the cutting groove 30 of the tool holder 3 are brought into complete contact. This avoids stress concentration caused by the limited precision of the frame structure, which prevents the cutting edge 10 and the cutting groove 30 from making good contact. This extends the service life of the tool head 1 and the tool holder 3 and improves the accuracy of the ship model rotational inertia parameter test.

[0079] The structure of the rotating seat assembly is as follows: it includes a rotating groove 52 mounted on a support frame, and a groove 5201 with an upward opening is provided on the upper surface of the rotating groove 52. The groove 5201 is a semi-cylindrical groove. It also includes a protrusion 51 provided at the bottom of the blade holder 3. The protrusion 51 is a semi-cylindrical block structure that cooperates with the groove 5201. The axis of the protrusion 51 is perpendicular to the blade 10.

[0080] Furthermore, it also includes a plate-shaped rotating plate 5101, the lower surface of which is provided with a protrusion 51, and the rotating plate 5101 is connected to the tool holder 3 by fasteners.

[0081] By setting a protrusion 51 at the bottom of the tool holder 3, it can swing in the groove 5201 in the rotating groove 52, achieving a swing with the axis of the protrusion 51 as the center line. The swing trajectory is a cylindrical arc surface, which at the same time restricts the relative position of the tool holder 3 in the rotating groove 52. The structure is simple.

[0082] The cutter head and cutter holder structures in Examples 1 and 2 are not only suitable for ship model debugging devices, but also for debugging equipment for the center of gravity position, longitudinal and lateral rotational inertia of rotating bodies, automobiles, etc. The following is an example of the installation method of the longitudinal and lateral inertia debugging device for ship models.

[0083] like Figures 11-12 As shown in Embodiment 3, the installation method of the longitudinal inertia adjustment device includes the following steps:

[0084] Step 1: Install first support columns 61 at intervals on the ground, with the axis of the first support columns 61 set vertically;

[0085] Step 2: Install the rotating seat assembly on the upper part of the first support column 61;

[0086] Step 3: Install the tool holder 3 on the rotating seat assembly so that the tool holder 3 can swing relative to the first support column 61. The swing trajectory of the tool holder 3 is a cylindrical arc surface.

[0087] Step 4: Install connectors 62 symmetrically on the upper end of the longitudinal inertia frame 6. The cross-section of connectors 62 is an inverted L-shape. Then, install the cutter head 1 on the lower surface of the upper end of connectors 62. The lower edge of the cutter head 1 is a straight cutting edge 10. The vertical planes of the two connectors 62 are parallel to the cutting edge 10. In this step, a fixing plate 2 can be installed on the lower surface of the upper end of connectors 62 first, and the cutter head 1 can be installed in the mounting groove 20 at the lower part of the fixing plate 2.

[0088] Step 5: Using hoisting tools, place the longitudinal inertia frame 6 with the cutter head 1 installed between the first support columns 61, and align the cutting edge 10 at the lower part of the cutter head 1 with the cutting groove 30 at the upper part of the cutter holder 3. The cross-section of the cutting groove 30 is V-shaped. The central axis of the swing trajectory of the cutter holder 3 is perpendicular to the cutting edge 10. The longitudinal inertia frame 6 is used to place the ship model 60, and the cutting edge 10 is perpendicular to the mid-longitudinal section of the ship model 60.

[0089] Step 6: After the longitudinal inertia frame 6 is freed from the restraint of the hoisting tool, the cutter head 1 exerts downward pressure on the cutter holder 3 under the weight of the longitudinal inertia frame 6 itself. After the cutter holder 3 swings, the blade 10 and the bottom of the cutter groove 30 are in contact, and the longitudinal inertia frame 6 swings with the blade 10 as the center line.

[0090] Step 7: A laser displacement sensor 63 is installed on one side of the longitudinal inertia frame 6. The position of the laser displacement sensor 63 is fixed by a mounting bracket 64 installed on the ground. The laser displacement sensor 63 is a commercially available product, such as the Panasonic HL-G112-SJ sensor.

[0091] In the installation method of Embodiment 3, the longitudinal inertia frame 6 with the symmetrically installed upper connector 62 is equivalent to the swing frame in Embodiments 1 and 2; the two first support columns 61 are equivalent to the support frame in Embodiments 1 and 2.

[0092] By providing a rotating seat assembly on the first support column 61 that allows the tool holder 3 to be positioned relative to the first support column 61, the cutting edge 10 of the tool head 1 and the cutting groove 30 of the tool holder 3 are in complete contact during installation, thus avoiding stress concentration, extending the service life of the tool head 1 and the tool holder 3, and improving the accuracy of the ship model rotational inertia parameter test.

[0093] A laser displacement sensor 63 is used instead of a sensor with a signal line, which avoids angular deflection caused by the quality of the signal line.

[0094] In step two of the installation method in Embodiment 3, the structure of the rotating seat assembly is as follows: it includes a rotating base 44 installed at the end of the first support column 61, a rotating shaft 43 is provided on the upper part of the rotating base 44, a knife holder 3 is installed on the upper part of the rotating shaft 43, the bottom of the knife holder 3 is rotatably engaged with the rotating shaft 43, the sides of the knife holder 3 and the rotating base 44 are engaged with the two ends of the rotating shaft 43, and the axis of the rotating shaft 43 is perpendicular to the blade 10.

[0095] It also includes a retaining ring 41 concentrically arranged with the rotating shaft 43. There are two retaining rings 41, which are located on both sides of the tool holder 3. The tool holder 3 and the rotating base 44 cooperate with the retaining rings 41. The retaining rings 41 are used to limit the relative positions of the tool holder 3 and the rotating base 44.

[0096] The bottom of the tool holder 3 is provided with an upper half groove 302 that runs through both sides of the tool holder 3. The upper half groove 302 is a semi-cylindrical groove structure with an opening facing downward. The upper half groove 302 is engaged with the upper part of the rotating shaft 43. The outer surface of the tool holder 3 at both ends of the upper half groove 302 along the axial direction is provided with an upper half ring 303. The upper half ring 303 is a semi-annular boss structure. The inner ring of the upper half ring 303 is concentric with the upper half groove 302. The outer ring of the upper half ring 303 is engaged with the inner ring of the annular structure retaining ring 41.

[0097] The structure of the rotating base 44 is as follows: it includes a base body 4401 with a block structure. The upper part of the rotating base 44 is provided with a lower half groove 4402 that runs through both sides of the rotating base 44. The lower half groove 4402 is a semi-cylindrical groove structure with an upward opening. The lower half groove 4402 is engaged with the upper part and the lower part of the rotating shaft 43. The outer surface of the base body 4401 at both ends of the lower half groove 4402 is provided with a lower half ring 4403. The lower half ring 4403 is a semi-annular boss structure. The inner ring of the lower half ring 4403 is concentric with the lower half groove 4402. The outer ring of the lower half ring 4403 is engaged with the inner ring of the annular retaining ring 41.

[0098] The upper half ring 303 and the lower half ring 4403 are vertically aligned and have the same outer diameter. The upper half ring 303 and the lower half ring 4403 are fitted with retaining rings 41.

[0099] The rotating shaft 43 has a columnar structure. One end of the rotating shaft 43 is provided with a stop 431, which is a block structure. The same side of the tool holder 3 and the rotating base 44 is engaged with the stop 431. The other end of the rotating shaft 43 is located outside the tool holder 3 and the rotating base 44 and is provided with a retaining ring 42. The other side of the tool holder 3 and the rotating base 44 is engaged with the retaining ring 42.

[0100] When measuring the longitudinal inertia of the ship model 60:

[0101] The adjusted ship model 60 is placed on the longitudinal inertia frame 6, and then a crane is used to lift the longitudinal inertia frame 6 carrying the ship model 60 as a whole, so that the cutting edge 10 of the cutter head 1 falls into the cutting groove 30 of the cutter holder 3.

[0102] A laser displacement sensor 63 is placed at one end of the boat model 60 to collect the vertical movement distance of the boat model 60 at the point of swaying and send it to the computer in real time.

[0103] When adjusting the center of gravity position of the ship model 60, first move the internal pressure iron of the ship model 60 to ensure that it is horizontal. At this time, the laser displacement sensor 63 reads a stable data. Then, add a fixed weight next to the laser displacement sensor 63 to tilt the ship model 60. The laser displacement sensor 63 reads a data. The computer calculates and analyzes the height of the center of gravity position and gives an adjustment plan based on the theoretical data.

[0104] When adjusting the longitudinal rotational inertia of the ship model 60, simply remove the weights from the center of gravity of the ship model 60 and allow the ship model 60 to swing freely for a certain period of time. The laser displacement sensor 63 reads the real-time data and sends it to the computer. The computer calculates and analyzes whether the rotational inertia of the ship model 60 converges or diverges, and provides an adjustment plan based on theoretical data.

[0105] like Figures 13-16 As shown in Embodiment 4, the installation method of the lateral inertia adjustment device includes the following steps:

[0106] Step 1: Set four second support columns 71 at intervals on the ground. The four second support columns 71 are arranged in a rectangular array and the axis of the second support columns 71 is set vertically.

[0107] Step 2: Install a rectangular frame structure support hanger 74 in the middle of the first crossbeam 72 and the second crossbeam 73. Install a rotating seat assembly on the lower inner surface of the rectangular frame of the support hanger 74. Install a tool holder 3 on the upper part of the rotating seat assembly so that the tool holder 3 can swing relative to the support hanger 74. The swing trajectory of the tool holder 3 is a cylindrical arc surface. The upper ends of the two second support columns 71 are connected through the first crossbeam 72. The other two second support columns 71 are connected through the second crossbeam 73. The first crossbeam 72 and the second crossbeam 73 are arranged in parallel.

[0108] Step 3: Install the cutter head 1 below the middle of the swing beam 75. The lower edge of the cutter head 1 is a straight blade 10. The blade 10 is perpendicular to the axis of the swing beam 75. The swing beam 75 is passed through the rectangular frame of the support bracket 74 so that the cutter head 1 corresponds to the cutter holder 3. The cross-section of the cutter groove 30 is V-shaped. The central axis of the swing trajectory of the cutter holder 3 is perpendicular to the blade 10. In step 3, the fixing plate 2 can be installed below the middle of the beam 75 first. The cutter head 1 is installed in the mounting groove 20 at the bottom of the fixing plate 2.

[0109] Step 4: Place the transverse inertia frame 7 between the second support columns 71. Connect the two ends of the two swing beams 75 to the upper surface of the transverse inertia frame 7 at the same time. Place the cutting edge 10 at the lower part of the cutter head 1 in the cutting groove 30 at the upper part of the cutter seat 3. The transverse inertia frame 7 is used to place the ship model 60. The cutting edge 10 is parallel to the mid-longitudinal section of the ship model 60.

[0110] Step 5: After lowering the swing beam 75 with the cutter head 1 and the transverse inertia frame 7 as a whole, the cutter head 1 exerts downward pressure on the cutter holder 3 under the weight of the transverse inertia frame 7 itself. After the cutter holder 3 swings, the cutting edge 10 fits into the bottom of the cutting groove 30; the transverse inertia frame 7 swings with the cutting edge 10 as the center line.

[0111] Step Six: A laser displacement sensor 63 is installed on one side of the transverse inertia frame 7. The position of the laser displacement sensor 63 is fixed by a mounting bracket 64 installed on the ground. The laser displacement sensor 63 is a commercially available product, such as the Panasonic HL-G112-SJ sensor.

[0112] In the installation method of Embodiment 4, the transverse inertia frame 7 with the swing beam 75 installed on the upper surface is equivalent to the swing frame in Embodiments 1 and 2; the combined structure of the four second support columns 71, the first beam 72, the second beam 73 and the support hanger 74 is equivalent to the support frame in Embodiments 1 and 2.

[0113] By setting a rotating seat assembly on the support bracket 74 so that the cutter holder 3 can be relative to the support bracket 74, the cutting edge 10 of the cutter head 1 and the cutting groove 30 of the cutter holder 3 are in complete contact during installation, thus avoiding stress concentration, extending the service life of the cutter head 1 and the cutter holder 3, and improving the accuracy of the ship model rotational inertia parameter test.

[0114] A laser displacement sensor 63 is used instead of a sensor with a signal line, which avoids angular deflection caused by the quality of the signal line.

[0115] Existing ship model inertia adjustment devices cannot test the lateral rotational inertia parameters of ship models. This embodiment provides a lateral inertia adjustment device to make the adjustment data more comprehensive.

[0116] In step two of the installation method in Embodiment 3, the structure of the rotating seat assembly is as follows: it includes a rotating groove 52 mounted on a support frame, the upper surface of which has an upward-opening groove 5201, which is a semi-cylindrical groove. It also includes a protrusion 51 located at the bottom of the tool holder 3, which is a semi-cylindrical block structure that mates with the groove 5201, and the axis of the protrusion 51 is perpendicular to the blade 10. It also includes a plate-like rotating plate 5101, the lower surface of which has the protrusion 51, and the rotating plate 5101 is connected to the tool holder 3 by fasteners. The rotating groove 52 is mounted on the lower inner surface of the rectangular frame of the support hanger 74.

[0117] When measuring the lateral moment of inertia of the ship model 60:

[0118] The ship model 60 is placed on the transverse inertia frame 7, and the laser displacement sensor 63 is placed at one end of the ship model 60. An external force is applied to allow the ship model 60 to swing freely for a certain period of time. The laser displacement sensor 63 collects the vertical movement distance of the ship model 60 at the swing point and sends it to the computer in real time to analyze whether the ship model's rotational inertia converges or diverges, and provides an adjustment plan based on theoretical data.

[0119] In the installation methods of Embodiments 3 and 4, the structure of the rotating seat assembly is not limited to the structure mentioned in the embodiments. As long as the rotating seat assembly can enable the tool holder 3 to swing relative to the first support column 61, the swing trajectory of the tool holder 3 is a cylindrical arc surface.

[0120] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A cutter head and cutter holder structure, comprising a cutter head (1) and a swing frame, wherein the cutter head (1) is mounted on the swing frame, characterized in that: The blade (1) is a block structure with an inverted triangular cross-section. The lower edge of the blade (1) is a straight blade (10). The swing frame swings around the blade (10) as the center line. It also includes a rotating seat assembly and a support frame. The lower part of the rotating seat assembly is fixedly installed on the upper end of the support frame. The upper part of the rotating seat assembly is fitted with a knife holder (3) for supporting the cutter head (1). The knife holder (3) can swing relative to the support frame. The swing trajectory of the knife holder (3) is a cylindrical arc surface and the central axis of the cylindrical arc surface is perpendicular to the blade (10). The knife holder (3) is a block structure. The upper surface of the knife holder (3) is provided with an upward-opening cutting groove (30). The cross-section of the cutting groove (30) is V-shaped. The bottom of the cutting groove (30) is fitted with the blade (10). The structure of the rotating seat assembly is as follows: it includes a rotating groove (52) mounted on a support frame, the upper surface of the rotating groove (52) is provided with an upward-opening groove (5201), the groove (5201) is a semi-cylindrical groove, and it also includes a protrusion (51) provided at the bottom of the knife holder (3), the protrusion (51) is a semi-cylindrical block structure that cooperates with the groove (5201), and the axis of the protrusion (51) is perpendicular to the blade (10); It also includes a plate-shaped rotating plate (5101), the lower surface of which is provided with protrusions (51), and the rotating plate (5101) is connected to the tool holder (3) by fasteners; The protrusion (51) swings in the groove (5201) with the axis of the protrusion (51) as the center line; The bottom of the blade groove (30) cooperates with the blade (10) to enable the swing frame to swing relative to the support frame. The swing frame is a longitudinal inertia frame (6) for loading the ship model (60) and measuring the longitudinal inertia, or a transverse inertia frame (7) for loading the ship model (60) and measuring the transverse inertia.

2. An installation method for a longitudinal inertia adjustment device comprising a tool head and tool holder structure as described in claim 1, characterized in that: Includes the following steps: Step 1: Install first support columns (61) at intervals on the ground, with the axis of the first support columns (61) set vertically; Step 2: Install the rotating seat assembly on the upper part of the first support column (61); Step 3: Install the tool holder (3) on the rotating seat assembly so that the tool holder (3) can swing relative to the first support column (61). The swing trajectory of the tool holder (3) is a cylindrical arc surface. Step 4: Install connectors (62) symmetrically on the upper end of the longitudinal inertia frame (6). The cross-section of connectors (62) is an inverted L-shape. Then install a cutter head (1) on the lower surface of the upper end of connectors (62). The lower edge of the cutter head (1) is a straight blade (10). The vertical planes of the two connectors (62) are parallel to the blade (10). Step 5: Using hoisting tools, place the longitudinal inertia frame (6) with the cutter head (1) between the first support columns (61), and align the cutting edge (10) at the bottom of the cutter head (1) with the cutting groove (30) at the top of the cutter holder (3). The cross-section of the cutting groove (30) is V-shaped. The central axis of the swing trajectory of the cutter holder (3) is perpendicular to the cutting edge (10). The longitudinal inertia frame (6) is used to place the ship model (60). Step 6: After the longitudinal inertia frame (6) is freed from the restraint of the hoisting tool, the cutter head (1) exerts downward pressure on the cutter holder (3) under the weight of the longitudinal inertia frame (6). After the cutter holder (3) swings, the blade (10) fits against the bottom of the cutter groove (30), and the longitudinal inertia frame (6) swings with the blade (10) as the center line. Step 7: A laser displacement sensor (63) is installed on one side of the longitudinal inertia frame (6). The position of the laser displacement sensor (63) is fixed by a mounting bracket (64) installed on the ground.

3. An installation method for a transverse inertia adjustment device comprising a tool head and tool holder structure as described in claim 1, characterized in that: Includes the following steps: Step 1: Four second support columns (71) are set at intervals on the ground. The four second support columns (71) are arranged in a rectangular array and the axis of the second support columns (71) is set vertically. Step 2: Install rectangular frame support hangers (74) in the middle of the first crossbeam (72) and the second crossbeam (73). Install a rotating seat assembly on the lower inner surface of the rectangular frame of the support hanger (74). Install a tool holder (3) on the upper part of the rotating seat assembly so that the tool holder (3) can swing relative to the support hanger (74). The swing trajectory of the tool holder (3) is a cylindrical arc surface. The upper ends of the two second support columns (71) are connected by the first crossbeam (72), and the other two second support columns (71) are connected by the second crossbeam (73). The first crossbeam (72) and the second crossbeam (73) are set in parallel. Step 3: Install the cutter head (1) below the middle of the swing beam (75). The lower edge of the cutter head (1) is a straight blade (10). The blade (10) is perpendicular to the axis of the swing beam (75). Pass the swing beam (75) through the rectangular frame of the support bracket (74) so ​​that the cutter head (1) corresponds to the cutter holder (3). The cross-section of the cutter groove (30) is V-shaped. The central axis of the swing trajectory of the cutter holder (3) is perpendicular to the blade (10). Step 4: Place the transverse inertia frame (7) between the second support columns (71), connect the two ends of the two swing beams (75) to the upper surface of the transverse inertia frame (7) at the same time, and place the cutting edge (10) at the lower part of the cutter head (1) in the cutting groove (30) at the upper part of the cutter holder (3). The transverse inertia frame (7) is used to place the ship model (60). Step 5: After lowering the swing beam (75) with the cutter head (1) and the transverse inertia frame (7) as a whole, the cutter head (1) exerts downward pressure on the cutter holder (3) under the weight of the transverse inertia frame (7). After the cutter holder (3) swings, the cutting edge (10) fits against the bottom of the cutting groove (30); the transverse inertia frame (7) swings with the cutting edge (10) as the center line. Step 6: A laser displacement sensor (63) is installed on one side of the transverse inertia frame (7). The position of the laser displacement sensor (63) is fixed by a mounting bracket (64) set on the ground.

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