CN111872804B

CN111872804B - Stone processing equipment

Info

Publication number: CN111872804B
Application number: CN202010795143.1A
Authority: CN
Inventors: 王雪莲; 华杰; 李少枝
Original assignee: Hangzhou Fuyang Dingjie Stone Co Ltd
Current assignee: Hangzhou Dinghao New Material Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-08-20
Anticipated expiration: 2040-08-10
Also published as: CN113245933A; CN111872804A; CN113211262A

Abstract

The invention belongs to the field of stone polishing, and particularly relates to stone processing equipment which comprises a machine head shell, a telescopic shaft, a spring A, a cross shaft, a connecting column, a volute spiral spring, an installing head, a ring A, a disc seat, a polishing disc and a nut, wherein an outer shaft of the telescopic shaft is in rotating fit with the machine head shell, and an inner shaft of the telescopic shaft is in circumferential rotation and axial sliding fit with the machine head shell; the V-shaped swing rod for locking the extension limit state of the telescopic shaft drives the tightening wheel to tighten the belt through a series of transmissions, so that the torque transmitted from the belt on the telescopic shaft is increased to the limit, and the telescopic shaft drives the grinding disc to grind the stone curved surface with higher efficiency.

Description

Stone processing equipment

Technical Field

The invention belongs to the field of stone polishing, and particularly relates to stone processing equipment.

Background

Manual grinders are widely used for the polishing of stone surfaces, and vibrations are generated when the grinders are in an open state and brought into contact with the stone to be polished, and the vibrations generated by the grinders cause the stone surface to be excessively ground and cause discomfort to the operator.

The vibrations generated when the sander is in contact with the stone are mainly due to two reasons: first, when a polishing blade rotating at a high speed is in contact with a surface of a stone material, if an operator does not stabilize the sander well, the rotational resistance of the polishing blade by the stone material may cause the sander to flutter. Secondly, when the piece of polishing of high-speed rotation contacted with the stone material, if the piece of polishing does not have with the stone material surface parallel but has certain angle, the resistance on stone material surface can produce certain deviational force to the polisher through the piece of polishing for the polisher takes place the vibration that the swing produced by a relatively large margin, is unfavorable for effectively polishing to the stone material surface.

Currently, the vibrations generated by the sander are attenuated by arranging a vibration damping structure in the sander. However, the vibration generated by the grinding machine under the action of the stone is not eliminated, and the phenomenon of local transitional grinding on the surface of the stone still occurs to a certain extent, so that the polishing effect of the surface of the stone is influenced.

Therefore, it is necessary to design a stone processing apparatus to solve the above problems.

The invention designs stone processing equipment to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses stone processing equipment which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A stone processing device comprises a machine head shell, a telescopic shaft, a spring A, a cross shaft, a connecting column, a volute spring, a mounting head, a ring A, a disc seat, a polishing disc and a nut, wherein an outer shaft of the telescopic shaft is in rotating fit with the machine head shell, and an inner shaft of the telescopic shaft is in circumferential rotation and axial sliding fit with the machine head shell; a connecting column is arranged in a circular groove C at the upper end of the cylindrical mounting head and is connected with the tail end of an inner shaft of the telescopic shaft in a cross universal joint mode through a cross shaft; a volute spiral spring for swinging and resetting the connecting column relative to the telescopic shaft is arranged on the cross shaft; the convex spherical surface B at the upper end of the mounting head is matched with the concave spherical surface A at the lower end of the machine head shell so as to eliminate the interference of the machine head shell on the swinging of the mounting head relative to the telescopic shaft. The center of the cross shaft and the center of the spherical surface A are both located on the central axis of the telescopic shaft, and the center of the spherical surface B is superposed with the center of the cross shaft, so that the mounting head is ensured not to interfere with the spherical surface A when swinging relative to the telescopic shaft. The ring A arranged on the spherical surface B is matched with the ring groove B on the spherical surface A; the lower end of the mounting head is provided with a cylindrical boss which has the same central axis with the mounting head, a disc-shaped disc seat is nested and mounted on the cylindrical boss through the threaded matching of a nut and the cylindrical boss, and an annular polishing disc for polishing stone is mounted on the disc seat.

A spring A for stretching and resetting the telescopic shaft is nested on the telescopic shaft; the telescopic shaft is driven to rotate by an electric driving module arranged in the machine body shell connected with the machine head shell; the machine head shell and the machine body shell are provided with structures which can transmit larger torque to the telescopic shaft along with the contraction of the telescopic shaft; the structure for locking the extension or contraction limit states of the telescopic shaft is arranged on the machine head shell and the machine body shell, and the structure for locking the extension or contraction limit states of the telescopic shaft enables the telescopic shaft in the extension limit state to be subjected to the maximum torque from the electric drive module.

As a further improvement of the technology, a shaft A parallel to the telescopic shaft is installed in the machine body shell, a shaft sleeve is rotatably matched on the shaft A, and a belt wheel A and a bevel gear B are coaxially installed on the shaft sleeve; the bevel gear B is meshed with a bevel gear A arranged on an output shaft of the electric drive module; the belt wheel A is in transmission connection with a belt wheel B arranged on an outer shaft of the telescopic shaft through a belt; the side wall of the machine head shell is provided with a grip which is convenient to hold and press.

In a further improvement of the present technology, the outer shaft of the telescopic shaft is rotatably engaged with the circular groove a of the nose casing, and the ring C attached to the outer shaft of the telescopic shaft is rotated in the circular groove a on the inner wall of the circular groove a. The matching of the ring C and the circular groove A ensures that only relative rotation is generated between the outer shaft of the telescopic shaft and the handpiece shell. An inner shaft of the telescopic shaft circumferentially rotates and axially slides in a circular groove B on the machine head shell; two volute spiral springs which can swing and reset the telescopic shaft are symmetrically arranged between the telescopic shaft and the cross shaft, and two volute spiral springs which can swing and reset the connecting column are symmetrically arranged between the connecting column and the cross shaft. A step round block is rotatably matched in a step round groove on the end face of the tail end of the outer shaft of the telescopic shaft, and a water through groove E which runs through the two ends of the step round block is in butt joint communication with a water through groove A which runs through the two ends of the telescopic shaft; the step round block is connected with an external water source through a hose; the step round block is matched with the telescopic shaft in a rotating mode to ensure that the water flowing in the moving process of the invention is good. The water through grooves C penetrating through the two ends of the connecting column are in butt joint communication with the water through grooves D penetrating through the mounting head; a hose penetrating through a water trough B in the center of the cross shaft is used for communicating the water trough A with the water trough C; a sliding block A sliding in the machine head shell along the telescopic direction of the telescopic shaft is in rotary fit with an inner shaft of the telescopic shaft; one end of the spring A is connected with the annular plate arranged on the outer shaft of the telescopic shaft, and the other end of the spring A is connected with the sliding block A.

As a further improvement of the technology, the inner shaft of the telescopic shaft rotates in a circular groove D on the sliding block A; the ring B arranged on the inner shaft of the telescopic shaft rotates in the ring groove C on the inner wall of the circular groove D. The matching of the ring B and the ring groove C ensures that the sliding block A synchronously extends and retracts along with the inner shaft of the telescopic shaft while rotating relative to the inner shaft of the telescopic shaft. A straight gear A and a straight gear B are coaxially arranged on a shaft B which is rotationally matched with two supports E arranged in the machine head shell, and the shaft B is vertical to the telescopic shaft; the straight gear A is meshed with a rack A arranged on the sliding block A; the straight gear B is meshed with a rack B sliding along the length direction of the machine body shell; the rack B is in sliding fit with a guide seat arranged in the machine body shell; the rack B is meshed with a straight gear C arranged in the machine body shell; a shaft C where the straight gear C is located is in rotating fit with a support A arranged in the machine body shell, a bevel gear C is arranged on the shaft C, and the bevel gear C is meshed with a bevel gear D arranged in the machine body shell; a shaft D where the bevel gear D is located is in rotary fit with a support B arranged in the machine body shell, and the shaft D is provided with a straight gear D; the straight gear D is meshed with a rack C which slides in a chute C on the side wall of the machine body shell.

A telescopic rod A slides in the sliding groove B on the side wall of the machine body shell along the motion direction parallel to the rack C, and a spring B for telescopic resetting of the telescopic rod A is arranged in the telescopic rod A; one end of the telescopic rod A is provided with a tightening wheel for fully tightening the belt, and the other end of the telescopic rod is provided with a driving block matched with the tail end of the rack C; along with the contraction of the telescopic shaft, the sliding block A drives the tightening wheel to fully stretch and tighten the belt through transmission connection.

As a further improvement of the technology, the telescopic rod A consists of an outer sleeve A and an inner rod A which are sleeved with each other; two guide blocks B are symmetrically arranged on the inner rod A and respectively slide in two guide grooves B on the inner wall of the outer sleeve A. The cooperation of guide block B and guide way B guarantees that interior pole A can not break away from overcoat A at telescopic link A extension in-process. Two guide blocks A are symmetrically installed on the outer side of the outer sleeve A, and the two guide blocks A respectively slide in the two guide grooves A on the inner wall of the sliding groove B. The cooperation of guide block A and guide way A guarantees that telescopic link A can not break away from spout B under the belt pulling for telescopic link A is in the pulling to the belt all the time through propping tight wheel and props tight state. The spring B positioned in the outer sleeve A is an extension spring; one end of the spring B is connected with the inner rod A, and the other end of the spring B is connected with the inner wall of the outer sleeve A.

As a further improvement of the technology, a support F arranged on the side wall of the handpiece shell is hinged with the corner of the V-shaped swing rod through a swing shaft parallel to the shaft B; one end of the V-shaped swing rod is connected with the side wall of the sliding block A through a telescopic rod B; one end of a telescopic rod B is hinged with the tail end of the V-shaped oscillating bar, and the other end of the telescopic rod B is hinged with the side wall of the sliding block A; a spring C and a spring D for stretching and resetting the telescopic rod B are arranged in the telescopic rod B; the telescopic rod B is movably arranged in a swinging groove on the side wall of the machine head shell.

One end of the swing shaft is provided with a straight gear E which is meshed with a straight gear F arranged on the support F; a support G is arranged on the support F, and a straight gear I, a straight gear H and a straight gear G are arranged on the support G; the straight gear I is meshed with a straight gear H, the straight gear H is meshed with a straight gear G, and the straight gear G is meshed with a straight gear F; a shaft E where the straight gear I is located is in rotary fit with the support G; a straight gear J coaxial with the straight gear I is meshed with a rack D sliding in a chute A on the machine head shell along the direction parallel to the motion direction of the rack B; the rack D is meshed with a straight gear K arranged in the machine body shell, a shaft F where the straight gear K is arranged is in rotary fit with a support C arranged in the machine body shell, and a bevel gear E arranged on the shaft F is meshed with a bevel gear F arranged in the machine body shell; a shaft G on which the bevel gear F is arranged is rotationally matched with a support D arranged in the machine body shell, and a straight gear L arranged on the shaft G is meshed with a rack E which slides in a chute D on the side wall of the machine body shell along the telescopic direction of the telescopic rod A; the tail end of the rack E is matched with the driving block; when the extension limit state of the telescopic shaft is locked, the V-shaped swing rod drives the tightening wheel to fully tighten the belt through transmission connection.

As a further improvement of the technology, the telescopic rod B consists of an outer sleeve B and an inner rod B which are sleeved with each other; one end of the inner rod B is provided with a sliding block B, and the sliding block B slides in a guide groove C on the inner wall of the outer sleeve B; the spring C and the spring D are distributed on two sides of the sliding block B; one end of the inner rod B is hinged with the side wall of the sliding block A, and the tail end of the outer sleeve B is hinged with one end of the V-shaped swing rod; one end of the spring C is connected with the inner wall of the outer sleeve B, and the other end of the spring C is connected with the sliding block B; one end of a spring D nested on the inner rod B is connected with the sliding block B, and the other end of the spring D is connected with the inner wall of the outer sleeve B; and the swinging groove is provided with a structure for locking two limit positions of the V-shaped swinging rod swinging around the swinging shaft.

As a further improvement of the technology, two U-shaped seats matched with the V-shaped swing rod are symmetrically arranged at two ends of the swing groove, a circular groove E is formed in the inner wall of each U-shaped seat, a limiting pin slides in the circular groove E along the direction parallel to the swing shaft, and the exposed end of the limiting pin is provided with a round head matched with the V-shaped swing rod; a spring E for resetting the corresponding limiting pin is arranged in the circular groove E; one end of the spring E is connected with the inner wall of the circular groove E, and the other end of the spring E is connected with the end face of the corresponding limiting pin; two guide blocks C are symmetrically arranged on the limit pin and respectively slide in two guide grooves D on the inner wall of the corresponding circular groove E.

Compared with the traditional manual stone grinding machine, the manual stone grinding machine is suitable for effectively grinding and polishing the plane of the stone and the curved surface of the stone. When the stone plane is polished, the V-shaped swing rod is not locked in any U-shaped seat, and the V-shaped swing rod can swing in a self-adaptive mode along with the movement of the sliding block A. When the V-shaped swing rod is not locked, the telescopic shaft contracts along with gradual contact and interaction between the polishing disc and the surface of the stone, the sliding block A drives the tightening wheel to gradually tighten the belt through a series of transmission, and the torque transmitted from the belt on the telescopic shaft is gradually increased, so that the minimum rotating torque of the polishing disc in initial contact with the stone is ensured, the abrasion degree of the polishing disc to the stone in initial contact with the surface of the stone is smaller, the phenomenon of local transitional polishing of the surface of the stone caused by unbalanced interaction of the surface of the stone in the initial state of the polishing disc is avoided, and the quality and the efficiency of polishing of the stone are improved. Meanwhile, when the V-shaped swing rod is not locked, the polishing piece is in contact with the stone in a mode of being not parallel to the surface of the stone, the mounting head can drive the disc seat and the polishing piece to swing relative to the telescopic shaft under the action of the stone, so that the polishing piece is in contact with the stone and is in self-adaptive adjustment to be parallel to the surface of the stone, a phenomenon that a pit is formed in the edge of the polishing piece on the local part of the surface of the stone due to the fact that the polishing piece has an included angle with the surface of the stone is avoided, and the quality and the efficiency of stone polishing are improved.

When the curved surface on the stone is polished, the V-shaped swing rod swinging upwards to the limit position is locked, so that the telescopic shaft is locked in the state of extending to the limit, and the swinging of the mounting head relative to the machine head shell is not limited. When the curved surface is polished, the mounting head drives the disc seat and the polishing piece to perform self-adaptive swing relative to the telescopic shaft or the machine head shell along the curved surface along with the movement of the polishing machine, so that the polishing efficiency of the polishing machine on the curved surface of the stone material is effectively improved. Simultaneously, the V type pendulum rod that the extension extreme condition to the telescopic shaft carries out the locking drives through a series of transmissions and props tight the wheel and prop tightly the belt to make the epaxial moment of torsion that is transmitted from the belt that receives of telescopic increase to the limit, make the telescopic shaft drive the piece of polishing polish the stone material curved surface with higher efficiency.

The invention has simple structure and better use effect.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is an overall sectional view of the present invention.

FIG. 3 is a cross-sectional view of the telescopic shaft, hose, cross shaft, connecting post, mounting head, ring A and nose casing.

Fig. 4 is a schematic cross-sectional view of the head housing, the telescopic shaft, the annular plate, the spring a and the slider a.

FIG. 5 is a schematic cross-sectional view of the V-shaped swing link, the telescopic rod B and the slide block A.

Fig. 6 is a schematic diagram of the matching of a rack D, a spur gear J, a shaft E, a spur gear I, a spur gear H, a spur gear G, a spur gear F and a spur gear E.

Fig. 7 is a schematic cross-sectional view of the spur gear J, the rack D, and the spur gear K.

Fig. 8 is a schematic cross-sectional view of the straight gear B, the rack B and the straight gear C.

FIG. 9 is a cross-sectional view of the rack B, the gear C, the shaft C, the bevel gear C, the shaft D, the spur gear D, the rack D, the spur gear K, the shaft F, the bevel gear E, the bevel gear F, the shaft G, and the spur gear L.

Fig. 10 is a schematic cross-sectional view of the belt, the tightening wheel, the expansion rod a, the driving block, the rack C and the spur gear D.

Fig. 11 is a schematic cross-sectional view of the telescopic rod a, the driving block, the rack E and the spur gear L.

FIG. 12 is a cross-sectional view of the shaft A, pulley B, belt, pulley A and tightening wheel.

Fig. 13 is a cross-sectional view of the rack C, the driving block and the rack E.

FIG. 14 is a cross-sectional view of the belt, pulley A, sleeve, bevel gear B and bevel gear A.

FIG. 15 is a schematic cross-sectional view of the V-shaped swing link, the U-shaped seat and the limit pin.

Fig. 16 is a schematic sectional view of the head housing and the head housing.

Fig. 17 is a schematic sectional view of the slider a.

FIG. 18 is a schematic cross-sectional view of a stepped circular block.

Fig. 19 is a sectional view of the mounting head and its.

Fig. 20 is a schematic view of the telescoping shaft in cooperation with a connecting column and two partial sections thereof.

FIG. 21 is a cross-shaft schematic.

Fig. 22 is a schematic cross-sectional view of a fuselage shell and its view.

Number designation in the figures: 1. a handpiece shell; 2. a circular groove A; 3. a ring groove A; 4. a circular groove B; 5. a spherical surface A; 6. a ring groove B; 8. a chute A; 9. a swinging groove; 10. a telescopic shaft; 11. a water passing tank A; 12. a stepped circular groove; 13. a cross shaft; 14. a water passing tank B; 15. connecting columns; 16. a water trough C; 17. a volute spiral spring; 18. a hose; 19. a mounting head; 20. a spherical surface B; 21. a circular groove C; 22. a cylindrical boss; 23. a water passing tank D; 24. ring A; 25. a tray seat; 26. grinding the sheets; 27. a nut; 28. a slide block A; 29. a circular groove D; 30. a ring groove C; 31. ring B; 32. ring C; 33. a spring A; 34. a ring plate; 35. a stepped round block; 36. a water passing tank E; 37. a belt pulley B; 38. a belt; 39. a pulley A; 40. a shaft sleeve; 41. a bevel gear B; 42. an axis A; 43. a bevel gear A; 44. an electric drive module; 45. a body shell; 46. a rack A; 47. a straight gear A; 48. a shaft B; 49. a spur gear B; 50. a rack B; 51. a guide seat; 52. a spur gear C; 53. an axis C; 54. a bevel gear C; 55. a bevel gear D; 56. a shaft D; 57. a spur gear D; 58. a rack C; 59. a support A; 60. a support B; 61. a drive block; 62. a telescopic rod A; 63. a jacket A; 64. a guide groove B; 65. a guide block A; 66. an inner rod A; 67. a guide block B; 68. a tensioning wheel; 69. a rack E; 70. a spur gear L; 71. a shaft G; 72. a support D; 73. a bevel gear F; 74. a bevel gear E; 75. a shaft F; 76. a support C; 77. a spur gear K; 78. a rack D; 79. a support E; 80. a spur gear J; 81. an axis E; 82. a support G; 83. a straight gear I; 84. a spur gear H; 85. a spur gear G; 86. a spur gear F; 87. a spur gear E; 88. a pendulum shaft; 89. a support F; 90. a V-shaped swing rod; 91. a telescopic rod B; 92. a jacket B; 93. a guide groove C; 94. an inner rod B; 95. a slide block B; 96. a spring C; 97. a spring D; 98. a U-shaped seat; 99. a circular groove E; 100. a guide groove D; 101. a spacing pin; 102. a guide block C; 103. a spring E; 104. a grip; 105. a chute B; 106. a guide groove A; 107. a spring B; 108. a chute C; 109. and a chute D.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, the universal joint grinding machine comprises a machine head shell 1, a telescopic shaft 10, a spring a33, a cross shaft 13, a connecting column 15, a volute spring 17, a mounting head 19, a ring a24, a disc seat 25, a grinding piece 26 and a nut 27, wherein as shown in fig. 2, an outer shaft of the telescopic shaft 10 is in rotating fit with the machine head shell 1, and an inner shaft of the telescopic shaft 10 is in circumferential rotation and axial sliding fit with the machine head shell 1; as shown in fig. 3, 19 and 20, a connecting column 15 is installed in a circular groove C21 at the upper end of the cylindrical mounting head 19, and the connecting column 15 is connected with the tail end of the inner shaft of the telescopic shaft 10 through a cross shaft 13 in a cross universal joint manner; a scroll spring 17 which swings and resets the connecting column 15 relative to the telescopic shaft 10 is arranged on the cross shaft 13; as shown in fig. 3, 16 and 19, the convex spherical surface B20 at the upper end of the mounting head 19 is engaged with the concave spherical surface a5 at the lower end of the head housing 1 to eliminate interference of the head housing 1 with the swing of the mounting head 19 relative to the telescopic shaft 10. As shown in fig. 3 and 20, the center of the cross 13 and the center of the spherical surface a5 are both located on the central axis of the telescopic shaft 10, and the center of the spherical surface B20 coincides with the center of the cross 13, so that the mounting head 19 does not interfere with the spherical surface a5 when swinging relative to the telescopic shaft 10. As shown in fig. 3 and 16, the ring a24 mounted on the spherical surface B20 is matched with the ring groove B6 on the spherical surface a 5; as shown in figures 3 and 19, the lower end of the mounting head 19 is provided with a cylindrical boss 22 which is coaxial with the mounting head 19, a disc-shaped disc seat 25 is nested on the cylindrical boss 22 through the threaded matching of a nut 27 and the cylindrical boss 22, and an annular polishing disc 26 for polishing stone is arranged on the disc seat 25.

As shown in fig. 2 and 4, a spring a33 for telescoping and returning the telescopic shaft 10 is nested on the telescopic shaft; the telescopic shaft 10 is driven to rotate by an electric driving module 44 arranged in a machine body shell 45 connected with the machine head shell 1; as shown in fig. 6, 7 and 8, the nose shell 1 and the body shell 45 have a structure that transmits a larger torque to the telescopic shaft 10 as the telescopic shaft 10 contracts; the structure for locking the two limit states of the extension and the contraction of the telescopic shaft 10 is mounted on the machine head shell 1 and the machine body shell 45, and the structure for locking the limit states of the extension and the contraction of the telescopic shaft 10 enables the telescopic shaft 10 in the extension limit state to be subjected to the maximum torque from the electric drive module 44.

As shown in fig. 8, 12 and 14, a shaft a42 parallel to the telescopic shaft 10 is installed in the body shell 45, a shaft sleeve 40 is rotatably fitted on the shaft a42, and a pulley a39 and a bevel gear B41 are coaxially installed on the shaft sleeve 40; bevel gear B41 meshes with bevel gear a43 mounted on the output shaft of electric drive module 44; the belt wheel A39 is in transmission connection with a belt wheel B37 arranged on the outer shaft of the telescopic shaft 10 through a belt 38; as shown in fig. 1, a grip 104 is mounted on the side wall of the head housing 1 for easy holding and pressing.

As shown in fig. 4 and 16, the outer shaft of the telescopic shaft 10 is rotatably engaged with the circular groove a2 of the head housing 1, and the ring C32 attached to the outer shaft of the telescopic shaft 10 is rotated in the circular groove A3 of the inner wall of the circular groove a 2. The cooperation of the ring C32 with the circular groove a2 ensures that only relative rotation occurs between the outer shaft of the telescopic shaft 10 and the nose casing 1. As shown in fig. 2 and 16, the inner shaft of the telescopic shaft 10 rotates circumferentially and slides axially in a circular groove B4 on the head shell 1; as shown in fig. 20, two spiral springs 17 for swinging and returning to the telescopic shaft 10 are symmetrically installed between the telescopic shaft 10 and the cross shaft 13, and two spiral springs 17 for swinging and returning to the connecting column 15 are symmetrically installed between the connecting column 15 and the cross shaft 13. As shown in fig. 2, 18 and 20, a stepped circular block 35 is rotatably fitted into a stepped circular groove 12 formed in the end surface of the outer shaft end of the telescopic shaft 10, and a water passage groove E36 formed in the stepped circular block 35 and extending through both ends thereof is in butt communication with a water passage groove a11 formed in the telescopic shaft 10 and extending through both ends thereof; the step round block 35 is connected with an external water source through a hose 18; the rotation matching of the step round block 35 and the telescopic shaft 10 ensures that the water flowing in the moving process of the invention is good. As shown in fig. 3, 19 and 21, the water passing grooves C16 penetrating through both ends of the connecting column 15 are in butt communication with the water passing groove D23 penetrating through the mounting head 19; a hose 18 passing through the water passage B14 at the center of the cross 13 connects the water passage a11 with the water passage C16; as shown in fig. 2 and 4, a slider a28 sliding in the head shell 1 along the extension and retraction direction of the telescopic shaft 10 is rotationally engaged with the inner shaft of the telescopic shaft 10; the spring a33 has one end connected to the annular plate 34 mounted on the outer shaft of the telescopic shaft 10 and the other end connected to the slider a 28.

As shown in fig. 2 and 17, the inner shaft of the telescopic shaft 10 is rotated in a circular groove D29 of a slider a 28; the ring B31 mounted on the inner shaft of the telescopic shaft 10 rotates in the ring groove C30 on the inner wall of the circular groove D29. The engagement of ring B31 with ring C30 ensures that slide a28 rotates relative to the inner shaft of telescoping shaft 10 while simultaneously telescoping with the inner shaft of telescoping shaft 10. As shown in fig. 8, 12 and 13, a spur gear a47 and a spur gear B49 are coaxially mounted on a shaft B48 which is rotatably fitted with two seats E79 installed in the head housing 1, and the shaft B48 is perpendicular to the telescopic shaft 10; as shown in fig. 8 and 9, the spur gear a47 is meshed with a rack a46 mounted on the slide block a 28; the spur gear B49 is meshed with a rack B50 which slides along the length direction of the machine body shell 45; the rack B50 is slidably fitted with the guide seat 51 installed in the body shell 45; the rack B50 is meshed with a straight gear C52 installed in the machine body shell 45; a shaft C53 with a straight gear C52 is in rotary fit with a support A59 arranged in the machine body shell 45, a bevel gear C54 is arranged on the shaft C53, and a bevel gear C54 is meshed with a bevel gear D55 arranged in the machine body shell 45; a shaft D56 on which the bevel gear D55 is arranged is rotationally matched with a support B60 arranged in the machine body shell 45, and a straight gear D57 is arranged on the shaft D56; as shown in fig. 10, 13 and 22, the spur gear D57 meshes with a rack C58 that slides in a slide groove C108 on the side wall of the body case 45.

As shown in fig. 11 and 12, a telescopic rod a62 slides in a sliding groove B105 on the side wall of the body shell 45 along the direction parallel to the moving direction of the rack C58, and a spring B107 for telescopically restoring the telescopic rod a62 is arranged in the telescopic rod a; as shown in fig. 10, 12 and 13, one end of the telescopic rod a62 is provided with a tightening wheel 68 for tightening the belt 38, and the other end of the telescopic rod is provided with a driving block 61 matched with the tail end of the rack C58; along with the contraction of the telescopic shaft 10, the slide block A28 drives the tensioning wheel 68 to fully tension the belt 38 through the transmission connection.

As shown in fig. 11, the telescopic rod a62 is composed of an outer sleeve a63 and an inner rod a66 which are sleeved with each other; two guide blocks B67 are symmetrically arranged on the inner rod A66, and the two guide blocks B67 slide in two guide grooves B64 on the inner wall of the outer sleeve A63 respectively. The cooperation of the guide block B67 and the guide slot B64 ensures that the inner rod a66 does not disengage from the outer sheath a63 during extension of the telescoping rod a 62. Two guide blocks A65 are symmetrically arranged on the outer side of the outer sleeve A63, and the two guide blocks A65 slide in two guide grooves A106 on the inner wall of the sliding groove B105 respectively. The cooperation of the guide block a65 and the guide groove a106 ensures that the telescopic rod a62 cannot be separated from the sliding groove B105 under the pulling of the belt 38, so that the telescopic rod a62 is always in a pulling and tightening state on the belt 38 through the tightening wheel 68. Spring B107 located within casing A63 is an extension spring; the spring B107 has one end connected to the inner lever A66 and the other end connected to the inner wall of the outer sleeve A63.

As shown in fig. 6, a support F89 installed on the side wall of the nose casing 1 is hinged with the corner of the V-shaped swing link 90 through a swing shaft 88 parallel to the shaft B48; as shown in fig. 5 and 16, one end of the V-shaped swing rod 90 is connected with the side wall of the slide block a28 through a telescopic rod B91; one end of a telescopic rod B91 is hinged with the tail end of the V-shaped swing rod 90, and the other end of a telescopic rod B91 is hinged with the side wall of the sliding block A28; a spring C96 and a spring D97 for stretching and retracting the telescopic rod B91 are arranged in the telescopic rod B91; the telescopic rod B91 is movably arranged in a swinging groove 9 on the side wall of the machine head shell 1.

As shown in fig. 6 and 16, one end of the pendulum shaft 88 is provided with a spur gear E87, and the spur gear E87 is meshed with a spur gear F86 arranged on a support F89; a support G82 is arranged on the support F89, and a straight gear I83, a straight gear H84 and a straight gear G85 are arranged on the support G82; a spur gear I83 is meshed with a spur gear H84, a spur gear H84 is meshed with a spur gear G85, and a spur gear G85 is meshed with a spur gear F86; a shaft E81 on which the straight gear I83 is arranged is in rotary fit with a support G82; a straight gear J80 which is coaxial with the straight gear I83 is meshed with a rack D78 which slides in a sliding groove A8 on the machine head shell 1 along the direction parallel to the motion direction of the rack B50; as shown in fig. 9, 11 and 22, the rack D78 is engaged with a spur gear K77 installed in the body housing 45, a shaft F75 on which the spur gear K77 is located is rotationally fitted with a carrier C76 installed in the body housing 45, and a bevel gear E74 installed on the shaft F75 is engaged with a bevel gear F73 installed in the body housing 45; a shaft G71 on which a bevel gear F73 is arranged is rotationally matched with a support D72 arranged in the machine body shell 45, and a straight gear L70 arranged on the shaft G71 is meshed with a rack E69 sliding in a sliding groove D109 on the side wall of the machine body shell 45 along the telescopic direction of a telescopic rod A62; the tail end of the rack E69 is matched with the driving block 61; while the extension limit state of the telescopic shaft 10 is locked, the V-shaped swing rod 90 drives the tensioning wheel 68 to fully tension and tension the belt 38 through transmission connection.

As shown in fig. 5, the telescopic rod B91 is composed of an outer sleeve B92 and an inner rod B94 which are sleeved with each other; one end of the inner rod B94 is provided with a slide block B95, and the slide block B95 slides in a guide groove C93 on the inner wall of the outer sleeve B92; the spring C96 and the spring D97 are distributed on two sides of the sliding block B95; one end of the inner rod B94 is hinged with the side wall of the slide block A28, and the tail end of the outer sleeve B92 is hinged with one end of the V-shaped swing rod 90; one end of the spring C96 is connected with the inner wall of the outer sleeve B92, and the other end is connected with the sliding block B95; one end of a spring D97 nested on the inner rod B94 is connected with the sliding block B95, and the other end of the spring D97 is connected with the inner wall of the outer sleeve B92; as shown in fig. 3, 5 and 6, the swing groove 9 is provided with a structure for locking two limit positions of the V-shaped swing rod 90 swinging around the swing shaft 88.

As shown in fig. 3, 6 and 15, two U-shaped seats 98 matched with the V-shaped swing link 90 are symmetrically installed at two ends of the swing slot 9, a circular slot E99 is formed on the inner wall of each U-shaped seat 98, a limit pin 101 slides in the circular slot E99 along a direction parallel to the swing shaft 88, and the exposed end of the limit pin 101 is provided with a round head matched with the V-shaped swing link 90; a spring E103 for resetting the corresponding limit pin 101 is arranged in the circular groove E99; one end of the spring E103 is connected with the inner wall of the circular groove E99, and the other end is connected with the end face of the corresponding limit pin 101; two guide blocks C102 are symmetrically arranged on the limiting pin 101, and the two guide blocks C102 respectively slide in two guide grooves D100 on the inner wall of the corresponding circular groove E99.

The electric drive module 44 of the present invention is known in the art and is comprised of a speed reducer, a motor and a control unit.

The working process of the invention is as follows: in the initial state, the V-shaped swing rod 90 is not located at two swing limit positions, the V-shaped swing rod 90 and the telescopic rod are not locked to the slider a28, and the spring C96 and the spring D97 in the telescopic rod are both in a natural state. The V-shaped swing link 90 is not inserted into any one of the U-shaped seats 98. Spring a33 is in a compressed state. The slider a28 is located at the bottom limit position in the head shell 1. The tightening wheel 68 is in a tightened state against the belt 38, and the spring B107 is in a tension energy storage state. The mounting head 19 and the inner rod of the telescopic shaft 10 are in a concentric state by four scroll springs 17 in a natural state. The spherical surface B20 on the mounting head 19 has clearance with the spherical surface A5 on the head shell 1, and the ring A24 is not inserted into the ring groove B6. The ring groove B6 on the spherical surface A5 is opposite to the ring A24. The driving block 61 is in contact with the side wall of the body housing 45. One ends of the rack E69 and the rack C58 are simultaneously in contact with the drive block 61, but there is no interaction between the rack E69 and the rack C58 and the drive block 61.

When the invention is used for grinding stone planes, the electric drive module 44 is started firstly, and the output shaft of the electric drive module 44 drives the telescopic shaft 10 to rapidly rotate relative to the sliding block A28 through the bevel gear A43, the bevel gear B41, the shaft sleeve 40, the belt wheel A39, the belt 38 and the belt wheel B37. The telescopic shaft 10 drives the mounting head 19 to synchronously rotate through the cross shaft 13 and the connecting column 15, and the mounting head 19 drives the polishing plate 26 to synchronously and rapidly rotate through the disc seat 25. At the same time, the belt 38 rotates the tension wheel 68.

The body shell 45 is held in one hand and the sanding sheet 26 is moved toward the plane of the stone material at an angle parallel to the plane of the stone material by the hand grip 104. When the polishing sheet 26 initially contacts the plane of the stone, the polishing sheet 26 drives the whole machine body of the present invention to shake under the action of the stone surface because the stone surface is rough. In the shaking process of the machine body, the mounting head 19 swings adaptively relative to the telescopic shaft 10 under the interaction of the stone and the grinding sheet 26 rotating at a high speed, and the scroll spring 17 deforms. The swinging of the nose shell 1 relative to the mounting head 19 enables the vibrating body not to drive the polishing sheet 26 on the disk seat 25 to vibrate relative to the stone surface, but still keeps the polishing sheet 26 in full parallel contact with the stone surface, and avoids the problem that the polishing sheet 26 polishes the stone surface to form obvious pits due to the interaction between the local edge of the polishing sheet 26 and the stone surface because the polishing sheet 26 shakes synchronously with the body along with the mounting head 19 where the polishing sheet is located and the stone surface to form a certain deflection angle.

When the stone surface is polished by the polishing blades 26, the vibration of the stone surface to the mounting head 19 and the head housing 1 by the polishing blades 26 disappears, and the head housing 1 is smoothly swung back and returned with respect to the mounting head 19 by the returning action of the spiral spring 17. At this time, the body shell 45 and the nose shell 1 are pressed toward the stone surface, so that the nose shell 1 moves axially relative to the mounting head 19, and the ring a24 on the mounting head 19 moves toward the ring groove B6 on the spherical surface a 5. The inner shaft of the telescopic shaft 10 contracts relative to the outer shaft thereof, the slide block A28 which is rotationally matched with the inner shaft of the telescopic shaft 10 moves vertically and upwards synchronously in the handpiece shell 1, and the spring A33 is further compressed to store energy. The slide block A28 drives a straight gear A47 to rotate through a rack A46, the straight gear A47 drives a rack B50 to move along the length direction of the machine body shell 45 through a shaft B48 and a forward gear B, and the rack B50 drives a rack C58 to press the driving block 61 towards the outer side of the machine body shell 45 through a straight gear C52, a shaft C53, a bevel gear C54, a bevel gear D55, a shaft D56 and a straight gear D57. The driving block 61 drives the tightening wheel 68 to further tighten the belt 38 through the telescopic rod a62, so that the torque applied to the telescopic shaft 10 and transmitted from the electric drive module 44 by the belt 38 is rapidly increased. The telescopic shaft 10 with the increased rotation torque drives the polishing disc 26 to polish the stone plane more efficiently through the mounting head 19 and the disc seat 25, and the efficiency of stone polishing is further improved.

When the ring A24 enters the ring groove B6, the relative swing between the mounting head 19 and the telescopic shaft 10 or the nose casing 1 which can not generate vibration is limited, the telescopic shaft 10 can further tighten the belt 38 through a series of transmission to the limit, and the torque transmitted from the electric drive module 44 by the belt 38 on the telescopic shaft 10 is the largest, which is beneficial to more efficiently grinding the stone surface by the invention.

When the sliding block a28 slides in the handpiece shell 1 along the central axis direction of the telescopic shaft 10, the sliding block a28 drives the V-shaped swing rod 90 to swing around the swing shaft 88 in a self-adaptive manner by stretching or compressing the telescopic rod B91, and the spring C96 and the spring D97 in the telescopic rod B91 generate corresponding deformation energy storage. During the process that the driving block 61 pulls the tensioning wheel 68 through the telescopic rod A62, the telescopic rod A62 is further extended due to the pulling of the belt 38, and the spring B107 in the telescopic rod A62 is further stretched to store energy.

When the present invention for grinding stone surfaces is finished, the electric drive module 44 is stopped. With the cancellation of the acting force on the machine head shell 1 and the machine body shell 45, the sliding block a28 drives the inner shaft of the telescopic shaft 10 to rapidly extend and reset relative to the outer shaft of the telescopic shaft 10 under the resetting action of the spring a33, and the sliding block a28 drives the mounting head 19 to reset relative to the machine head shell 1 through a series of transmission. Meanwhile, the sliding block A28 is reset through a series of driving racks C58, the belt 38 drives the driving block 61 to be contacted with the side wall of the machine body shell 45 again through the tensioning wheel 68 and the telescopic rod A62, the telescopic rod A62 restores to the initial state, and the tensioning degree of the belt 38 restores to the initial state quickly.

When the operator is experienced and familiar with the use of the present invention, the operator does not wear the stone plane with the edge of the grinding sheet 26 dented when the stone plane is initially contacted with the stone plane due to the non-parallelism of the grinding sheet 26 with the stone surface, which occurs when the grinding sheet 26 rotating at a high speed initially contacts the stone plane, but maintains the parallelism of the grinding sheet 26 with the stone plane before and after grinding the stone plane. Meanwhile, an operator familiar with the present invention can effectively overcome the vibration caused by the initial contact of the polishing sheet 26 rotating at a high speed with the plane of the stone by grasping the holding force of the present invention, thereby avoiding the local polishing phenomenon of the plane of the stone caused by the vibration of the present invention. In order to solve the problem, before the stone is polished, when the machine head shell is not started, the mounting head 19 and the machine head shell 1 generate relative axial movement, so that the ring A24 enters the ring groove B6 on the spherical surface A5, the sliding block A28 moves to the upper limit position in the machine head shell 1 along the direction of the central axis of the telescopic shaft 10, the telescopic shaft 10 contracts to the limit, and the spring A33 is further compressed to store energy. The slide block a28 drives the tightening wheel 68 to fully tighten the belt 38 through a series of transmissions, so that the torque applied to the telescopic shaft 10 and transmitted from the electric drive module 44 by the belt 38 is maximized and the V-shaped swing link 90 is swung downward around the swing shaft 88.

When the V-shaped swing rod 90 just crosses the limiting pin 101 in the lower U-shaped seat 98, enters the lower U-shaped seat and is limited to swing back by the limiting pin 101, one branch hinged to the telescopic rod B91 on the V-shaped swing rod 90 is parallel to the telescopic rod B91, the spring C96 in the telescopic rod B91 is stretched to store energy, the spring D97 is compressed to the limit, and the deformed spring C96 and the deformed spring D97 enable the V-shaped swing rod 90 with the swinging back trend to be tightly attached to the round head end of the limiting pin 101 through the inner rod B94 and the outer sleeve B92 of the telescopic rod B91 and keep the parallel state of one branch of the V-shaped swing rod 90 and the telescopic rod B91. At this time, because the acting force of the slide block A28 on the V-shaped swing rod 90 through the telescopic rod B91 just passes through the central axis of the swing shaft 88, the moment generated by the slide block A28 on the V-shaped swing rod 90 through the acting force of the telescopic rod B91 on the V-shaped swing rod 90 is zero, so that the V-shaped swing rod 90 indirectly locks the movement of the slide block A28 along the central axis direction of the telescopic shaft 10, the inner shaft of the telescopic shaft 10 drives the ring A24 to keep a state of being embedded in the annular groove B6 through the mounting head 19, and the relative swing between the mounting head 19 and the machine head shell 1 is guaranteed not to be generated any more, so that the initial adaptation time of an operator to the stone plane grinding is shortened, and the stone grinding efficiency of the invention is improved.

When the locked invention finishes grinding the stone plane, the electric drive module 44 is stopped. The V-shaped swing link 90 is manually swung out of the U-shaped seat 98, so that the V-shaped swing link 90 overcomes the limit of the corresponding limit pin 101 and restores to the initial state. Along with the cancellation of the acting force on the machine head shell 1 and the machine body shell 45, the sliding block A28 drives the inner shaft of the telescopic shaft 10 to be quickly reset relative to the machine head shell 1 under the resetting action of the spring A33, the sliding block A28 drives the mounting head 19 to be reset relative to the machine head shell 1 through a series of transmissions, simultaneously, the sliding block A28 is reset through a series of transmission driving racks C58, the belt 38 drives the driving block 61 to be in contact with the side wall of the machine body shell 45 again through the tensioning wheel 68 and the telescopic rod A62, the telescopic rod A62 restores to the initial state, and the tensioning degree of the belt 38 is quickly restored to the initial state.

When the invention is used for polishing the curved surface of the stone, the structural characteristics of the curved surface of the stone determine that the invention can generate self-adaptive swing along with the curved surface of the stone due to the change of a polishing angle relative to the machine head shell 1 or the telescopic shaft 10 when the invention is used for polishing the curved surface of the stone, so that the polished curved surface on the curved surface of the stone is prevented from being excessively polished when the polishing sheet 26 rotating at a high speed is used for polishing the curved surface of the stone in an expanded range, and the polishing quality and efficiency of the invention on the curved surface of the stone are improved. Therefore, when the curved surface of the stone material is ground, the mounting head 19 cannot generate relative axial movement with respect to the outer shaft of the head shell 1 or the telescopic shaft 10, and the ring a24 is prevented from entering the ring groove B6 to restrict the swing of the mounting head 19 with respect to the inner shaft of the head shell 1 or the telescopic shaft 10.

However, in order to ensure the efficient grinding of the curved surface of the stone material by the present invention, the torque transmitted from the electric drive module 44 to the telescopic shaft 10 by the belt 38 in the initial state is minimal, and the torque received from the electric drive module 44 on the telescopic shaft 10 must be increased and adjusted by further tightening adjustment of the belt 38, and the telescopic shaft 10 must be locked at the same time, and the adjustment process is as follows:

the V-shaped swing rod 90 swings upwards in the U-shaped seat 98, when the V-shaped swing rod 90 just crosses two limiting pins 101 in the upper U-shaped seat 98, enters an upper U shape and is limited by the limiting pins 101 to swing back, one part of the V-shaped swing rod 90, which is hinged with the telescopic rod B91, is just parallel to the telescopic rod B91, the spring D97 in the telescopic rod B91 is stretched for storing energy, the spring C96 is compressed to the limit, and the deformed springs C96 and D97 enable the V-shaped swing rod 90 with the swinging back trend to be tightly attached to the round head end of the limiting pin 101 through the inner rod B94 and the outer sleeve B92 of the telescopic rod B91 and keep the parallel state of one part of the V-shaped swing rod 90 and the telescopic rod B91. At this time, because the acting force of the slide block A28 on the V-shaped swing rod 90 through the telescopic rod B91 also just passes through the central axis of the swing shaft 88, the moment generated by the slide block A28 on the V-shaped swing rod 90 through the acting force of the telescopic rod B91 on the V-shaped swing rod 90 is zero, so that the V-shaped swing rod 90 indirectly locks the movement of the slide block A28 along the central axis direction of the telescopic shaft 10, the slide block A28 is kept at the bottom in the machine head shell 1, and the relative swing between the mounting head 19 and the machine head shell 1 is ensured to be not limited, so that the grinding of the curved surface of the stone is adapted, and the grinding efficiency of the curved surface of the stone is improved.

When the V-shaped swing link 90 swings upwards in the U-shaped seat 98, the V-shaped swing link 90 drives the rack D78 to move along the length direction of the body shell 45 through the swing shaft 88, the spur gear E87, the spur gear F86, the spur gear G85, the spur gear H84, the spur gear I83, the shaft E81 and the spur gear J80, the rack D78 drives the rack E69 to push the driving block 61 towards the outer side of the body shell 45 through the spur gear K77, the shaft F75, the bevel gear E74, the bevel gear F73, the shaft G71 and the spur gear L70, the driving block 61 pulls the tensioning wheel 68 towards the outer side of the body shell 45 through the telescopic rod a62, and the tensioning wheel 68 fully tensions the belt 38.

When the V-shaped swing rod 90 swings upward or downward in the U-shaped seat 98, the round-end ends of the stop pins 101 symmetrically installed in the U-shaped seat 98 do not obstruct the V-shaped swing rod 90 from swinging into the U-shaped seat 98. When the V-shaped swing link 90 interacts with the limit pin 101 in the U-shaped seat 98, the limit pin 101 contracts into the corresponding circular groove E99 under the action of the V-shaped swing link 90, and the spring E103 in the circular groove E99 is further compressed to store energy. When the V-shaped oscillating bar 90 passes over the limiting pin 101, the limiting pin 101 is instantly reset under the reset action of the corresponding spring E103 and simultaneously limits the swinging back of the V-shaped oscillating bar 90 swinging into the U-shaped seat 98 around the oscillating shaft 88 to a certain extent, so that the swinging back of the V-shaped oscillating bar 90 caused by the working vibration of the invention when the V-shaped oscillating bar 90 indirectly locking the slide block a28 through the telescopic rod B91 is not subjected to an external force is prevented, and the practical effect of locking the position state of the slide block a28 caused by the swinging back of the V-shaped oscillating bar 90 is avoided.

When the limit position state of the slide block A28 in the handpiece shell 1 is not required to be locked, the round head end of the limiting pin 101 in the U-shaped seat 98 is always matched with the V-shaped oscillating bar 90, so that the V-shaped oscillating bar 90 is swung out of the corresponding U-shaped seat 98 by swinging the V-shaped oscillating bar 90 by hand to overcome the limitation of the limiting pin 101 in the corresponding U-shaped seat 98.

In the process of grinding the stone by the grinding piece 26, a switch valve on the hose 18 connecting the stepped circular block 35 and a water source is opened, so that water in the water source is injected to the ground part on the surface of the stone sequentially through the water channel E36, the water channel A11, the hose 18 communicating the water channel A11 with the water channel C16, the water channel C16 and the water channel D23, and the abrasion of the grinding piece 26 is reduced.

In conclusion, the beneficial effects of the invention are as follows: the invention is suitable for effectively grinding and polishing the plane of the stone and the curved surface of the stone. When the stone plane is polished, the V-shaped swing rod 90 is not locked in any U-shaped seat 98, and the V-shaped swing rod 90 swings adaptively along with the movement of the slide block A28. When the V-shaped swing link 90 is not locked, the telescopic shaft 10 contracts along with the gradual contact and interaction between the polishing disc 26 and the stone surface, the sliding block a28 drives the tightening wheel 68 to gradually tighten the belt 38 through a series of transmission, the torque transmitted from the belt 38 on the telescopic shaft 10 is gradually increased, the minimum rotating torque of the polishing disc 26 when initially contacting the stone is ensured, the abrasion degree of the polishing disc 26 to the stone when initially contacting the stone surface is smaller, the phenomenon of local transitional polishing of the stone surface caused by the unbalanced interaction between the polishing disc 26 and the stone surface in the initial state is avoided, and the quality and efficiency of stone polishing are improved. Meanwhile, when the V-shaped swing link 90 is not locked, and the polishing sheet 26 in the present invention is in contact with the stone in a manner not parallel to the surface of the stone, under the action of the stone, the mounting head 19 can drive the disc seat 25 and the polishing sheet 26 to swing relative to the telescopic shaft 10, so that the polishing sheet 26 is adaptively adjusted to be parallel to the surface of the stone when in contact with the stone, thereby preventing a pit from being partially polished by the edge of the polishing sheet 26 on the surface of the stone due to the included angle between the polishing sheet 26 and the surface of the stone, and improving the quality and efficiency of polishing the stone.

When the curved surface on the stone is polished, the state that the telescopic shaft 10 extends to the limit is locked by locking the V-shaped swing rod 90 which swings up to the limit position, so that the swing of the mounting head 19 relative to the machine head shell 1 is not limited. When the curved surface is polished, the mounting head 19 drives the disc seat 25 and the polishing sheet 26 to perform self-adaptive swing along the curved surface relative to the telescopic shaft 10 or the machine head shell 1 along with the movement of the invention, so that the polishing efficiency of the polishing machine on the curved surface of the stone material is effectively improved. Meanwhile, the V-shaped swing link 90 locking the elongation limit state of the telescopic shaft 10 drives the tightening wheel 68 to tighten the belt 38 through a series of transmissions, so that the torque transmitted from the belt 38 on the telescopic shaft 10 is increased to the limit, and the telescopic shaft 10 drives the polishing disc 26 to polish the curved surface of the stone material with high efficiency.

Claims

1. The utility model provides a stone material processing equipment which characterized in that: the novel electric wrench comprises a handpiece shell, a telescopic shaft, a spring A, a cross shaft, a connecting column, a volute spiral spring, an installing head, a ring A, a disk seat, a polishing disk and a nut, wherein an outer shaft of the telescopic shaft is in rotating fit with the handpiece shell, and an inner shaft of the telescopic shaft is in circumferential rotating and axial sliding fit with the handpiece shell; a connecting column is arranged in a circular groove C at the upper end of the cylindrical mounting head and is connected with the tail end of an inner shaft of the telescopic shaft in a cross universal joint mode through a cross shaft; a volute spiral spring for swinging and resetting the connecting column relative to the telescopic shaft is arranged on the cross shaft; the convex spherical surface B at the upper end of the mounting head is matched with the concave spherical surface A at the lower end of the machine head shell so as to eliminate the interference of the machine head shell on the swinging of the mounting head relative to the telescopic shaft; the center of the cross shaft and the center of the spherical surface A are both positioned on the central axis of the telescopic shaft, and the center of the spherical surface B is superposed with the center of the cross shaft; the ring A arranged on the spherical surface B is matched with the ring groove B on the spherical surface A; the lower end of the mounting head is provided with a cylindrical boss which has the same central axis with the mounting head, a disc-shaped disc seat is nested and mounted on the cylindrical boss through the threaded matching of a nut and the cylindrical boss, and an annular polishing disc for polishing stone is mounted on the disc seat;

2. A stone working apparatus as claimed in claim 1, characterized in that: a shaft A parallel to the telescopic shaft is installed in the machine body shell, a shaft sleeve is rotatably matched on the shaft A, and a belt wheel A and a bevel gear B are coaxially installed on the shaft sleeve; the bevel gear B is meshed with a bevel gear A arranged on an output shaft of the electric drive module; the belt wheel A is in transmission connection with a belt wheel B arranged on an outer shaft of the telescopic shaft through a belt; the side wall of the machine head shell is provided with a grip which is convenient to hold and press.

3. A stone working apparatus as claimed in claim 1, characterized in that: the outer shaft of the telescopic shaft is in rotary fit with the circular groove A on the handpiece shell, and the ring C arranged on the outer shaft of the telescopic shaft rotates in the ring groove A on the inner wall of the circular groove A; an inner shaft of the telescopic shaft circumferentially rotates and axially slides in a circular groove B on the machine head shell; two volute spiral springs which can swing and reset the telescopic shaft are symmetrically arranged between the telescopic shaft and the cross shaft, and two volute spiral springs which can swing and reset the connecting column are symmetrically arranged between the connecting column and the cross shaft; a step round block is rotatably matched in a step round groove on the end face of the tail end of the outer shaft of the telescopic shaft, and a water through groove E which runs through the two ends of the step round block is in butt joint communication with a water through groove A which runs through the two ends of the telescopic shaft; the step round block is connected with an external water source through a hose; the water through grooves C penetrating through the two ends of the connecting column are in butt joint communication with the water through grooves D penetrating through the mounting head; a hose penetrating through a water trough B in the center of the cross shaft is used for communicating the water trough A with the water trough C; a sliding block A sliding in the machine head shell along the telescopic direction of the telescopic shaft is in rotary fit with an inner shaft of the telescopic shaft; one end of the spring A is connected with the annular plate arranged on the outer shaft of the telescopic shaft, and the other end of the spring A is connected with the sliding block A.

4. A stone working apparatus as claimed in claim 3, characterized in that: the inner shaft of the telescopic shaft rotates in a circular groove D on the sliding block A; a ring B arranged on the inner shaft of the telescopic shaft rotates in a ring groove C on the inner wall of the circular groove D; a straight gear A and a straight gear B are coaxially arranged on a shaft B which is rotationally matched with two supports E arranged in the machine head shell, and the shaft B is vertical to the telescopic shaft; the straight gear A is meshed with a rack A arranged on the sliding block A; the straight gear B is meshed with a rack B sliding along the length direction of the machine body shell; the rack B is in sliding fit with a guide seat arranged in the machine body shell; the rack B is meshed with a straight gear C arranged in the machine body shell; a shaft C where the straight gear C is located is in rotating fit with a support A arranged in the machine body shell, a bevel gear C is arranged on the shaft C, and the bevel gear C is meshed with a bevel gear D arranged in the machine body shell; a shaft D where the bevel gear D is located is in rotary fit with a support B arranged in the machine body shell, and the shaft D is provided with a straight gear D; the straight gear D is meshed with a rack C which slides in a chute C on the side wall of the machine body shell;

5. The stone machining apparatus of claim 4, wherein: the telescopic rod A consists of an outer sleeve A and an inner rod A which are sleeved with each other; the inner rod A is symmetrically provided with two guide blocks B which slide in two guide grooves B on the inner wall of the outer sleeve A respectively; two guide blocks A are symmetrically arranged on the outer side of the outer sleeve A, and the two guide blocks A respectively slide in two guide grooves A on the inner wall of the sliding groove B; the spring B positioned in the outer sleeve A is an extension spring; one end of the spring B is connected with the inner rod A, and the other end of the spring B is connected with the inner wall of the outer sleeve A.

6. The stone machining apparatus of claim 4, wherein: a support F arranged on the side wall of the machine head shell is hinged with the corner of the V-shaped swing rod through a swing shaft parallel to the shaft B; one end of the V-shaped swing rod is connected with the side wall of the sliding block A through a telescopic rod B; one end of a telescopic rod B is hinged with the tail end of the V-shaped oscillating bar, and the other end of the telescopic rod B is hinged with the side wall of the sliding block A; a spring C and a spring D for stretching and resetting the telescopic rod B are arranged in the telescopic rod B; the telescopic rod B is movably arranged in a swinging groove on the side wall of the machine head shell;

7. Stone machining apparatus according to claim 6, characterized in that: the telescopic rod B consists of an outer sleeve B and an inner rod B which are sleeved with each other; one end of the inner rod B is provided with a sliding block B, and the sliding block B slides in a guide groove C on the inner wall of the outer sleeve B; the spring C and the spring D are distributed on two sides of the sliding block B; one end of the inner rod B is hinged with the side wall of the sliding block A, and the tail end of the outer sleeve B is hinged with one end of the V-shaped swing rod; one end of the spring C is connected with the inner wall of the outer sleeve B, and the other end of the spring C is connected with the sliding block B; one end of a spring D nested on the inner rod B is connected with the sliding block B, and the other end of the spring D is connected with the inner wall of the outer sleeve B; and the swinging groove is provided with a structure for locking two limit positions of the V-shaped swinging rod swinging around the swinging shaft.

8. Stone machining apparatus according to claim 7, characterized in that: two U-shaped seats matched with the V-shaped swing rod are symmetrically arranged at two ends of the swing groove, a circular groove E is formed in the inner wall of each U-shaped seat, a limiting pin slides in the circular groove E along the direction parallel to the swing shaft, and the exposed end of the limiting pin is provided with a round head matched with the V-shaped swing rod; a spring E for resetting the corresponding limiting pin is arranged in the circular groove E; one end of the spring E is connected with the inner wall of the circular groove E, and the other end of the spring E is connected with the end face of the corresponding limiting pin; two guide blocks C are symmetrically arranged on the limit pin and respectively slide in two guide grooves D on the inner wall of the corresponding circular groove E.