Grinding-in device and grinding-in method for large multi-edge cone sliding surface

Abstract

The invention discloses a lapping-in device and a lapping-in method for a sliding surface of a large multi-edge cone, belongs to the field of lapping-in of the sliding surface of the large multi-edge cone, and aims to improve the high-efficiency controllability of lapping-in. Comprising a winch, a lapping-in inclined block, an indexing tool device, a bottom supporting block and a tool mandrel. The indexing tool device comprises an indexing disc, a plurality of hoisting holes are evenly distributed in the concentric circumference of the indexing disc, the number of the hoisting holes is equal to the number of edges of the multi-edge cone, and the lapping-in inclined block is freely arranged on the current lapping-in sliding face of the multi-edge cone. The tail end of a pulling rope of the winch is connected to the lapping-in inclined block, and the lapping-in inclined block is pulled to move at a constant speed along the current lapping-in sliding face. The indexing tool device is used for dispersing the rotation angle of the multi-edge cone, the moment balance theory is used for achieving rapid pose conversion, the position of the sliding face to be subjected to lapping-in of the multi-edge cone is efficiently adjusted to a preset station, the problems that due to the angle indexing error of the multi-edge cone, contact of the sliding face is not uniform are solved, the working efficiency is improved, and smooth production is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of lapping of sliding surfaces of large multi-edged cones, and particularly relates to a lapping device and a lapping method for sliding surfaces of large multi-edged cones. Background Art

[0002] With the rapid development of the high-end heavy equipment manufacturing field, heavy equipment is developing in the direction of large size, heavy weight, and high precision. The core component of a certain heavy equipment is a core cone assembly with a linear tapered cone structure as a whole. The core cone assembly includes a core shaft and a core cone coaxially installed on the core shaft. The core cone is Figure 1 the multi-edged cone shown. The large end diameter of the core cone is 2377 mm, the small end diameter is 1426 mm, the height of the core cone is 4520 mm, the diameter difference between the large end and the small end is 851 mm, and the taper of the core cone is as high as 21%, belonging to the field of extreme manufacturing. 18 slide plate units are evenly distributed along the circumferential direction on the outer circular surface of the core cone. These slide plate units are fitted to the bottom surface of the tapered plane slide plate groove with a taper of 6°. These 18 slide plate units enclose a regular octadecagon envelope surface. After assembly, it is required that the slide plate and the corresponding inclined block are paired and lapped, and the contact area between the slide plate and the inclined block is required to reach more than 75%.

[0003] Such a linear tapered multi-edged cone structure has the characteristics of large size, heavy weight, many edges, and high requirements for the contact surface, posing extremely high requirements for the lapping process. Most of the existing technologies use the manual scraping method for lapping. A flat plate or a straightedge of the corresponding accuracy grade is used, and the flat plate or the straightedge is pushed and pulled along the horizontal direction, and no force is allowed to be applied to the top surface of the flat plate or the straightedge. This kind of lapping method requires artificial addition of constraints, and the magnitude and direction of the scraping force need to be continuously adjusted according to the shape of the lapped workpiece. Such a method not only takes a long time, has poor repeatability, low efficiency, weak safety, has great uncontrollability, but also is difficult to solve the problem of uneven contact of the sliding surface caused by the angular indexing error of the multi-edged cone, and can no longer meet the development requirements of the current high-end heavy equipment manufacturing field. Summary of the Invention

[0004] The purpose of the present invention is to provide a lapping device and a lapping method for sliding surfaces of large multi-edged cones to improve the efficiency of lapping.

[0005] The technical solution adopted by the present invention is: a lapping device for the sliding surface of a large multi-edged cone, including a winch, a lapping inclined block, a indexing tooling device, a bottom support block and a tooling mandrel; the indexing tooling device includes an indexing disk, and a plurality of hoisting holes are evenly distributed on the concentric circumference of the indexing disk, and the number of hoisting holes is equal to the number of edges of the multi-edged cone; the multi-edged cone is coaxially and detachably assembled on the tooling mandrel and lies horizontally on the bottom support block; at both ends of the tooling mandrel, one of the indexing tooling devices is coaxially and detachably installed respectively, and the hoisting holes of the indexing tooling device are centered with the sliding surface of the multi-edged cone; the winch is installed on the large end side of the multi-edged cone; the lapping inclined block is freely arranged on the current lapping sliding surface of the multi-edged cone; the end of the traction rope of the winch is connected to the lapping inclined block, and the lapping inclined block is pulled to move uniformly along the current lapping sliding surface, and the traction rope is parallel to the sliding surface where the lapping inclined block is located.

[0006] Further, limiting structures are arranged on both sides of the current lapping sliding surface.

[0007] Further, the limiting structures include several limiting blocks spaced along the extending direction of the current lapping sliding surface, and the distance enclosed by three adjacent limiting blocks is less than the length of the lapping inclined block.

[0008] Further, the bottom support block includes a first support block supporting the bottom of the multi-edged cone and a second support block supporting the bottom of the tooling mandrel, and both the first support block and the second support block are V-shaped blocks.

[0009] Further, the winch is supported on a support, and the support is arranged near the large end of the multi-edged cone and is located on the extension line of the axis of the multi-edged cone.

[0010] Further, concave key grooves are arranged on the end faces at both ends of the tooling mandrel, and both ends of the key grooves penetrate radially along the end faces of the tooling mandrel; the indexing disk includes a large disk and a small disk; the large disk is a ring with a central circular hole, and the central circular hole is adapted to the tooling mandrel; one side of the small disk is provided with a convex block extending along its diameter direction; the convex block is inserted into the central circular hole and is adapted to the key groove at the end of the tooling mandrel; the large disk and the small disk are bolted, and the large disk is sleeved on the tooling mandrel, and the convex block of the small disk is inserted into the key groove of the tooling mandrel; a hoisting ring is fixed on the other side of the small disk opposite to the large disk; the hoisting holes are arranged on the part of the large disk exposed outside the small disk.

[0011] A lapping method for the sliding surface of a large multi-edged cone includes the following steps: Step 1: Horizontally support the whole formed by assembling the multi-edged cone on the tooling mandrel on the bottom support block; fasten the indexing tooling device to both ends of the tooling mandrel, and the indexing disk of the indexing tooling device is coaxial with the tooling mandrel. Step 2: Pad and support the bearing on the extension line of the axis at the large end of the multi-edge pyramid, and place the winch on the bearing; adjust the installation height of the winch so that the traction rope is parallel to the sliding surface to be ground and matched at the predetermined working position during pulling. Step 3: Adjust the sliding surface to be ground and matched to the predetermined working position through the indexing tooling device as the current sliding surface to be ground and matched; and install the limiting structures on both sides of the current sliding surface to be ground and matched. Step 4: Hoist the grinding and matching inclined block to the lower limit position of the current sliding surface to be ground and matched. Step 5: Connect the end of the traction rope of the winch to the grinding and matching inclined block, start the winch to pull the grinding and matching inclined block to move slowly and uniformly upward along the current sliding surface to be ground and matched. After moving to the upper limit position, release the traction force on the grinding and matching inclined block to make the grinding and matching inclined block slide freely along the current sliding surface to be ground and matched. Step 6: Remove the grinding and matching inclined block from the current sliding surface to be ground and matched, and repeat Steps 3 to 5 to complete the grinding and matching of the next sliding surface.

[0012] Further, before Step 3, pair and mark the lifting holes of the indexing tooling device at the large end of the multi-edge pyramid, the lifting holes of the indexing tooling device at the small end of the multi-edge pyramid, and the sliding surface, so that the three establish a unique corresponding relationship.

[0013] Further, the lifting holes of the indexing tooling device at the large end of the multi-edge pyramid and the lifting holes of the indexing tooling device at the small end of the multi-edge pyramid are respectively centered on the axial center line of the sliding surface.

[0014] Further, in Step 3, the lifting holes of the indexing tooling device at the large end of the multi-edge pyramid corresponding to the sliding surface to be ground and matched and the lifting holes of the indexing tooling device at the small end are used as lifting points to lift synchronously. Lift the large multi-edge pyramid to an appropriate height from the reference surface, and after automatic alignment is achieved through moment balance, lower it to be fixed on the bottom support block.

[0015] The beneficial effects of the present invention are as follows: By setting a tooling mandrel that cooperates with the multi-edge pyramid, and respectively setting indexing tooling devices at both ends of the tooling mandrel, the rotation angle of the multi-edge pyramid is discretized by the indexing tooling device, and by using the moment balance theory and the principle of minimum potential energy, rapid pose conversion is realized, and the position of the sliding surface to be ground and matched of the multi-edge pyramid is efficiently adjusted to the predetermined working position, solving problems such as uneven contact of the sliding surface caused by the angle indexing error of the multi-edge pyramid, improving work efficiency, and ensuring the smooth progress of production.

[0016] During the grinding process, the rotation angle of the multi-edge pyramid is discretized by using moment balance and statics theory to quickly and accurately adjust the position of the grinding sliding surface and balance it. After the multi-edge pyramid is balanced, it is fixed on the bottom support block, and a limiting structure is set on both sides of the current sliding surface to be ground to prevent left and right deviation during the grinding of the inclined block. In addition, the gravity of the inclined block itself is used to control the fit with the sliding plate surface. Since the taper of the multi-edge pyramid reaches 21%, a winch is used to apply an upward pulling force along the inclined surface to grind the inclined block. During the return journey, the inclined block slides down naturally by its own gravity for grinding. The entire grinding process is simple, time-consuming, efficient, and the grinding consistency of each sliding surface is good. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present invention; Figure 2 It is the front view of the indexing tooling device; Figure 3 is Figure 2 the left view of Figure 4 It is a schematic structural diagram of the end of the tooling mandrel.

[0018] In the figure, winch - 1, towing rope - 2, limiting block - 3, grinding inclined block - 4, support - 5, indexing tooling device - 6, indexing disk - 601, large disk - 601A, central circular hole - 601B, small disk - 601C, convex block - 601D, lifting hole - 602, lifting ring - 603, support block 1 - 7, support block 2 - 8, multi-edge pyramid - 9, sliding surface - 901A, tooling mandrel - 10, keyway - 10A. Detailed Embodiment

[0019] The following further describes the present invention in conjunction with the drawings and embodiments: The grinding device for the sliding surface of a large multi-edge pyramid, such as Figure 1As shown, it includes a winch 1, a grinding and matching inclined block 4, a dividing tooling device 6, a bottom support block and a tooling mandrel 10; the dividing tooling device 6 includes a dividing disc 601, and a plurality of lifting holes 602 are evenly distributed on the concentric circumference of the dividing disc 601, that is, these lifting holes 602 are on the same circumference, and the center of the circumference coincides with the center of the dividing disc 601. The number of lifting holes 602 is equal to the number of edges of the polygonal cone 9. For example, the core cone mentioned in the background technology of this specification is a polygonal cone, and its outer peripheral surface is a regular octagon. It is an 18-sided cone with 18 edges. There are a total of 18 sliding surfaces that need to be ground, so the number of lifting holes 602 is also 18, and the line connecting the centers of these 18 lifting holes 602 forms a regular octagon. The multi-sided cone 9 is coaxially detachably assembled on the tooling mandrel 10 and lies horizontally on the bottom support block, that is, after the multi-sided cone 9 is stably supported on the bottom support block, its central axis is parallel to the horizontal plane. The tooling mandrel 10 simulates the mandrel of the core cone assembly mentioned in the background technology, and its matching relationship with the multi-sided cone 9 is consistent with the matching relationship between the mandrel of the core cone assembly and the multi-sided cone 9, but the tooling mandrel 10 is part of the grinding and matching device, and its length is shorter than the mandrel of the core cone assembly to reduce costs. The indexing fixture 6 is coaxially and detachably installed at both ends of the fixture mandrel 10, and the polygonal cone 9 is located between the indexing fixtures 6 at both ends, that is, two indexing fixtures 6 are installed on the fixture mandrel 10, and the polygonal cone 9 is located between the two indexing fixtures 6. Relatively speaking, one of the indexing fixtures 6 is arranged closer to the large end of the polygonal cone 9, and the other indexing fixture 6 is arranged closer to the small end of the polygonal cone 9. The hoisting holes 602 of the indexing fixture 6 are aligned with the sliding surface 901A of the polygonal cone 9, that is, each sliding surface 901A corresponds to a hoisting hole 602 on a large end side and a hoisting hole 602 on a small end side. By synchronously lifting the polygonal cone 9 at the corresponding hoisting holes 602 on the large end side and the small end side, the polygonal cone 9 can be quickly converted to a position through torque balance, and the sliding surface 901A to be ground and matched is automatically converted to a predetermined position. The position adjustment of the sliding surface 901A to be ground is fast and efficient, and because the ground position of each sliding surface 901A can be accurately converted to the predetermined work station, the problem of uneven contact of the sliding surface caused by the angle division error of the polygonal cone 9 is avoided, the work efficiency is improved, and the smooth production is ensured. The hoist 1 is erected on the large end side of the polygonal cone 9; the ground bevel block 4 is freely set on the current ground sliding surface 901A of the polygonal cone 9; the end of the traction rope 2 of the hoist 1 is connected to the ground bevel block 4, and the ground bevel block 4 is pulled to move at a constant speed along the current ground sliding surface 901A, and the traction rope 2 is parallel to the sliding surface where the ground bevel block 4 is located, which ensures that the ground bevel block 4 is pulled by the traction rope 2. The sliding surface 901A is ground uniformly along the axial direction. Compared with manual grounding, it is more efficient, eliminates the influence of human factors, and has better grounding uniformity.

[0020] In order to control the straight-line movement of the lapping inclined block 4 during lapping and prevent it from tilting to both sides of the current lapping sliding surface 901A, a limiting structure is provided on both sides of the current lapping sliding surface 901A.

[0021] The limiting structure can take various forms. For example, along the extension direction of the current lapping sliding surface 901A, a continuous baffle is provided on both sides of the current lapping sliding surface 901A; or a guide rail parallel to the current lapping sliding surface 901A is erected on the top of the current lapping sliding surface 901A, and the top end of the lapping inclined block 4 is connected to the guide rail through a connecting rod, and the connecting rod is in sliding fit with the guide rail, etc. In this embodiment, the limiting structure includes several limiting blocks 3 distributed at intervals along the extension direction of the current lapping sliding surface 901A. An adjusting screw is installed on each limiting block 3, and the end of the adjusting screw abuts against the side surface of the lapping inclined block 4. The straight-line distance enclosed by three adjacent limiting blocks 3 is less than the length of the lapping inclined block 4, so that no matter where the lapping inclined block 4 moves, at least two limiting blocks 3 limit the lapping inclined block 4. The straight-line distance enclosed by three adjacent limiting blocks 3 refers to the straight-line distance enclosed by the limiting parts of three adjacent limiting blocks 3, and is also the direct distance formed by three adjusting screws. This structure is simple and convenient to install, and the limiting blocks 3 can be directly installed using the original threaded mounting holes on the sliding surface 901A.

[0022] If a single bottom support block is used to lift the middle part of the multi-edge cone 9, the stability is difficult to guarantee; if three or more bottom support blocks are used for lifting, materials will be wasted. In order to balance the support stability and save materials, the bottom support block includes a support block one 7 at the bottom of the multi-edge cone 9 and a support block two 8 that supports the bottom of the tooling mandrel 10. Both the support block one 7 and the support block two 8 are V-shaped blocks.

[0023] The winch 1 is supported on the support 5. The support 5 is arranged near the large end of the multi-edge cone 9 and is located on the extension line of the axis of the multi-edge cone 9. The support 5 can be formed by stacking square boxes, which is locally sourced and has a low cost.

[0024] Preferably, as Figure 2 、 Figure 3 and Figure 4As shown, concave key grooves 10A are provided on the end faces at both ends of the tooling mandrel 10, and both ends of the key grooves 10A penetrate radially along the end face of the tooling mandrel 10; the indexing disc 601 includes a large disc 601A and a small disc 601C; the large disc 601A is a ring with a central circular hole 601B, and the central circular hole 601B is adapted to the tooling mandrel 10; a convex block 601D extending along the diameter direction is provided on one side of the small disc 601C; the convex block 601D is inserted into the central circular hole 601B and is adapted to the key groove 10A at the end of the tooling mandrel 10; the large disc 601A and the small disc 601C are bolted together, and the large disc 601A is sleeved on the tooling mandrel 10, and the convex block 601D of the small disc 601C is inserted into the key groove 10A of the tooling mandrel 10; a lifting ring 603 is fixed on the other side of the small disc 601C opposite to the large disc 601A; the lifting hole 602 is provided on the part of the large disc 601A exposed outside the small disc 601C. For the indexing disc 601 with this structure, after it is assembled with the tooling mandrel 10, the large disc 601A is sleeved on the outer peripheral surface of the tooling mandrel 10. When the lifting ring is screwed into the lifting hole 602 for lifting, not only is the convex block 601D of the disc 601C inserted into the key groove 10A of the tooling mandrel 10 for limiting, but also the inner wall of the large disc 601A and the outer peripheral surface of the tooling mandrel 10 are used for limiting, improving the lifting stability and effectively preventing the indexing disc 601 from slipping off the tooling mandrel 10. The setting of the lifting ring 603 facilitates the lifting of the indexing disc 601 and the tooling mandrel 10 for assembly.

[0025] The lapping method for the sliding surface of a large multi-edged cone includes the following steps: Step 1: Horizontally support the whole formed by assembling the multi-edged cone 9 onto the tooling mandrel 10 on the bottom support block; fasten the indexing tooling device 6 to both ends of the tooling mandrel 10, and the indexing disc 601 of the indexing tooling device 6 is coaxial with the tooling mandrel 10; Step 2: Pad the support 5 on the extension line of the axis at the large end of the multi-edged cone 9, and place the winch 1 on the support 5; adjust the installation height of the winch 1 so that the traction rope 2 is parallel to the sliding surface 901A to be lapped at the predetermined working position during pulling; Step 3: Adjust the sliding surface 901A to be lapped to the predetermined working position as the current lapping sliding surface 901A through the indexing tooling device 6; and install the limiting structures on both sides of the current lapping sliding surface 901A. The constraint accuracy of the limiting structures needs to reach 0.05 mm / m, that is, when the lapping wedge 4 advances 1 meter, the maximum distance deviating from the longitudinal center line of the current lapping sliding surface 901A is 0.05 mm.

[0026] To enable rotation by hoisting through the indexing tooling device 6, it is necessary to determine the magnitude of the pulling force T, the pulling position r, the rotation angle, etc. The specific process is as follows: 1. Establish a coordinate system and determine the coordinates of each point: Suppose the multi-edged pyramid 9 extends along the axis direction, the center of the left end face is at the origin , and the center of the right end face is at , the centroid is located at the midpoint of the pyramid , the coordinate of the pulling force action point on the left end face is , and the coordinate of the pulling force action point on the right end face is . is the radius of the circle where the pulling force action point is located; is the length of the multi-edged pyramid 9.

[0027] 2. Determine the position vector and force vector of the pulling force: (1) Calculate the position vector relative to the centroid (2) Define the force vector 3. Calculate the moment of each pulling force about the centroid: (1) Left end moment After expansion (2) Right end moment After expansion (3) Total moment 4. Analyze the rotation condition: When there is a net moment about the axis, the core cone assembly can rotate. Through the above calculations, it can be known that the net moment is . Therefore, it can be concluded that when the pulling force action point is at a distance from the center of the circle and or , the vertical pulling force will generate a net moment about the axis, thus causing the core cone assembly to rotate.

[0028] 5. Determine the magnitude of the pulling force, the value of the pulling force position and the rotation angle according to the structure of the core cone assembly:​ For the outer peripheral surface of the multi-edged pyramid 9 being a regular octadecagon, that is, when there are 18 sliding surfaces to be lapped, the outer circular surface of the multi-edged pyramid 9 needs to be discretized into a quasi-regular octadecagon (that is, the centers of the lifting holes are connected to form a regular octadecagon), and the included angle between adjacent sliding surfaces is ; in addition, since the multi-edged pyramid 9 is in a static equilibrium state during hoisting, so the value of is equal to half of the gravity of the multi-edged pyramid 9; according to the actual size of the tooling mandrel, to facilitate the screwing of the lifting hole into the eyebolt and considering its strength compliance, the positions of the lifting holes are set on a circle with a certain diameter, and 18 hoisting holes are evenly distributed. In summary, 18 hoisting holes need to be set on the hoisting and rotating tooling, and the interval between adjacent hoisting holes is , and the positions of the hoisting holes are set on a circle with a certain diameter.

[0029] Step Four: Hoist the lapping wedge 4 to the lower limit position of the current lapping sliding surface 901A.

[0030] Step Five: Connect the end of the towing rope 2 of the winch 1 to the lapping wedge 4, start the winch 1 to pull the lapping wedge 4 to move slowly and uniformly upward along the current lapping sliding surface 901A. After moving to the upper limit position, release the traction force on the lapping wedge 4 to make the lapping wedge 4 freely slide down along the current lapping sliding surface 901A. That is, during the forward journey, the lapping wedge 4 is pulled by the winch 1 for lapping. During the return journey, relying on the self-weight of the wedge 4 to fall naturally, reverse lapping is realized through the conversion of gravitational potential energy.

[0031] During the forward journey, the uniform movement of the wedge 4 on the sliding surface 901A forms consistent scraping marks, reducing the surface roughness difference; it can also make the contact spots on the mating surface distributed evenly, reducing local wear.

[0032] During the return journey, relying on the self-weight of the wedge 4 to fall naturally, it has the same contact pressure as that during the forward journey. During the forward journey, uniform movement will form scraping marks in one direction. During the return journey, using the same conditions as the forward journey (self-weight and uniform speed), the scraping marks of the forward journey can be corrected, further improving the surface roughness quality.

[0033] It should be noted that during the return journey, the wedge 4 slides down uniformly along the sliding surface 901A under its own weight.

[0034] Step Six: Remove the lapping wedge 4 from the current lapping sliding surface 901A, and repeat Steps Three to Five to complete the lapping of the next sliding surface 901A.

[0035] Further, before step three, the lifting holes 602 of the indexing tooling device 6 at the large end of the multi-edged pyramid 9, the lifting holes 602 of the indexing tooling device 6 at the small end, and the sliding surface 901A are paired and marked to establish a unique corresponding relationship among the three. Taking the regular octadecagonal pyramid with 18 sliding surfaces as an example, the lifting holes 602 of the indexing tooling device 6 at its large end are sequentially numbered as 1#, 2#, 3#... 17#, 18#, and the lifting holes 602 of the indexing tooling device 6 at the small end are sequentially numbered as 1'#, 2'#, 3'#... 17'#, 18#; the sliding surfaces 901A are sequentially numbered as 1#, 2#, 3#... 17#, 18#. The 1# lifting hole 602 is aligned with the 1'# lifting hole 602 and is centered on the 1# sliding surface 901A at the same time; the 2# lifting hole 602 is aligned with the 2'# lifting hole 602 and is centered on the 2# sliding surface 901A at the same time. The relationship between the remaining lifting holes 602 and the sliding surfaces 901A is the same. In this way, a unique corresponding relationship between the lifting holes 602 and the sliding surfaces 901A is established, ensuring that after each sliding surface 901A is adjusted to the working position, its position remains consistent, eliminating the influence of position error on the consistency of the lapping quality of each sliding surface 901A. At the same time, during lapping, it can start from the 1# sliding surface 901A, and the clear numbering can effectively avoid missing lapping or repeated lapping of the sliding surfaces 901A. When numbering, a laser marking machine can be used for marking.

[0036] The lifting holes 602 of the indexing tooling device 6 at the large end of the multi-edged pyramid 9 and the lifting holes 602 of the indexing tooling device 6 at the small end are respectively centered on the axial midline of the sliding surface 901A. The plane formed by the axial midline of the sliding surface 901A and the central axis of the multi-edged pyramid 9 perpendicularly bisects the sliding surface 901A.

[0037] In this way, when the multi-edged pyramid 9 is lifted by double lifting points, the currently lapped sliding surface 901A will be directly above, which can further ensure the uniformity of lapping.

[0038] The specific adjustment process in step three is as follows: The lifting holes 602 of the indexing tooling device 6 at the large end of the multi-edged pyramid 9 and the lifting holes 602 of the indexing tooling device 6 at the small end corresponding to the sliding surface 901A to be lapped are used as lifting points to lift synchronously. The large multi-edged pyramid 9 is lifted to an appropriate height from the reference surface. After automatic alignment is achieved through moment balance, it is lowered and fixed on the bottom support block.

[0039] In the description of this specification, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "equipped with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grinding and matching device for a large multi-sided cone sliding surface, characterized in that: It comprises a winch (1), a grinding and matching inclined block (4), a dividing tooling device (6), a bottom support block and a tooling mandrel (10); The indexing tooling device (6) comprises a indexing disc (601), and a plurality of hoisting holes (602) are evenly distributed on the concentric circumference of the indexing disc (601), and the number of the hoisting holes (602) is equal to the number of edges of the multi-edge cone (9); The polygonal cone (9) is coaxially and detachably mounted on the tooling mandrel (10) and lies horizontally on the bottom support block; a dividing tooling device (6) is coaxially and detachably mounted on both ends of the tooling mandrel (10), and a hanging hole (602) of the dividing tooling device (6) is aligned with a sliding surface (901A) of the polygonal cone (9); The hoist (1) is erected on the large end side of the polygonal cone (9); the grinding and matching inclined block (4) is freely arranged on the current grinding and matching sliding surface (901A) of the polygonal cone (9); the end of the traction rope (2) of the hoist (1) is connected to the grinding and matching inclined block (4), and the grinding and matching inclined block (4) is pulled to move at a uniform speed along the current grinding and matching sliding surface (901A), and the traction rope (2) is parallel to the sliding surface where the grinding and matching inclined block (4) is located.

2. The grinding and matching device for the sliding surface of a large multi-sided cone as claimed in claim 1, characterized in that: A limiting structure is provided on both sides of the currently-ground sliding surface (901A).

3. The grinding and matching device for the sliding surface of a large multi-sided cone as claimed in claim 2, characterized in that: The limiting structure comprises a plurality of limiting blocks (3) spaced apart along the extension direction of the current grinding and fitting sliding surface (901A), wherein the distance enclosed by three adjacent limiting blocks (3) is less than the length of the grinding and fitting inclined block (4).

4. The grinding and matching device for the sliding surface of a large multi-sided cone as claimed in claim 1, 2 or 3, characterized in that: The bottom support block comprises a support block 1 (7) supported at the bottom of the polygonal cone (9) and a support block 2 (8) supported at the bottom of the tooling mandrel (10), and both the support block 1 (7) and the support block 2 (8) are V-shaped blocks.

5. The grinding and matching device for the sliding surface of a large multi-sided cone as claimed in claim 1, 2 or 3, characterized in that: The hoist (1) is supported on a support (5), and the support (5) is arranged near the large end of the polygonal cone (9) and is located on the extension line of the axis of the polygonal cone (9).

6. The grinding and matching device for the sliding surface of a large multi-sided cone as described in claim 1, 2 or 3, characterized in that: The end surfaces at both ends of the tooling mandrel (10) are provided with inwardly concave keyways (10A), and the two ends of the keyways (10A) are radially connected along the end surface of the tooling mandrel (10); the indexing disc (601) comprises a large disc (601A) and a small disc (601C); the large disc (601A) is a circular ring with a central circular hole (601B), and the central circular hole (601B) is adapted to the tooling mandrel (10); one side of the small disc (601C) is provided with a convex block (601D) extending in the diameter direction thereof; the convex block (601D) is plugged into the central circular hole (601B) and is provided with a protrusion (601D) extending in the diameter direction thereof; the protrusion ... The large disc (601A) is bolted to the small disc (601C), and the large disc (601A) is sleeved on the tooling mandrel (10), and the protrusion (601D) of the small disc (601C) is plugged into the keyway (10A) of the tooling mandrel (10); a lifting ring (603) is fixed on the other side of the small disc (601C) opposite to the large disc (601A); and the lifting hole (602) is provided at the portion of the large disc (601A) exposed from the small disc (601C).

7. A method for grinding and matching a sliding surface of a large multi-sided cone, characterized in that: The following steps are involved: Step 1: Assemble the polygonal cone (9) to the tooling mandrel (10) to form a whole horizontal support on the bottom support block; fasten the indexing tooling device (6) to both ends of the tooling mandrel (10), and the indexing disc (601) of the indexing tooling device (6) is coaxial with the tooling mandrel (10); Step 2: A support (5) is supported on the extension line of the axis of the large end of the multi-sided cone (9), and the winch (1) is placed on the support (5); the installation height of the winch (1) is adjusted so that the traction rope (2) is parallel to the sliding surface (901A) to be ground and matched at the predetermined work station when pulling; Step 3: adjusting the sliding surface to be ground (901A) to a predetermined position as the current ground sliding surface (901A) by means of the indexing tooling device (6); and installing limit structures on both sides of the current ground sliding surface (901A); Step 4: hoist the grinding and fitting inclined block (4) to the lower limit position of the current grinding and fitting sliding surface (901A); Step 5: The end of the traction rope (2) of the winch (1) is connected to the grinding and fitting inclined block (4), and the winch (1) is started to pull the grinding and fitting inclined block (4) to move upward slowly and uniformly along the current grinding and fitting sliding surface (901A). After moving to the upper limit position, the traction force on the grinding and fitting inclined block (4) is released, so that the grinding and fitting inclined block (4) can slide freely along the current grinding and fitting sliding surface (901A); Step 6: Remove the grinding bevel block (4) from the current grinding sliding surface (901A), and repeat steps 3 to 5 to complete the grinding of the next sliding surface (901A).

8. The method for grinding a large multi-sided cone sliding surface as claimed in claim 7, characterized in that: Prior to step 3, the hanging hole (602) of the indexing fixture (6) at the large end of the polygonal cone (9), the hanging hole (602) of the indexing fixture (6) at the small end, and the sliding surface (901A) are matched and marked so that a unique corresponding relationship is established among the three.

9. The method for grinding a large multi-sided cone sliding surface as claimed in claim 7, characterized in that: The hoisting hole (602) of the indexing fixture (6) at the large end of the polygonal cone (9) and the hoisting hole (602) of the indexing fixture (6) at the small end are respectively aligned with the axial center line (901B) of the sliding surface (901A).

10. The method for grinding a large multi-sided cone sliding surface as claimed in claim 7, characterized in that: In step three, the lifting holes (602) of the indexing fixture (6) at the large end of the multi-sided cone (9) corresponding to the sliding surface (901A) to be matched and the lifting holes (602) of the indexing fixture (6) at the small end are used as lifting points for synchronous lifting, and the large multi-sided cone (9) is lifted to an appropriate height from the reference surface, and after automatic alignment is achieved through torque balance, it is lowered to the bottom support block and fixed.

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