Main machine head assembly of stone thicknessing machine

Abstract

The utility model relates to the technical field of thicknessing machines, in particular to a main machine head assembly of a stone thicknessing machine, which comprises a spindle box, a lifting shaft sleeve, a spindle, a mounting disc, a first driving mechanism and a second driving mechanism, the mounting disc is fixedly connected with a first annular baffle, and the bottom end of the lifting shaft sleeve is detachably connected with a first annular water pipe. The upper end of the first annular baffle is connected with a second annular baffle, the second annular baffle, the first annular baffle and the upper end face of the mounting disc jointly define an annular groove, the first annular water pipe communicates with a first water inlet pipe, and a plurality of second water outlet holes are formed in the bottom of the annular groove. By arranging a first annular baffle and a second annular baffle, water in an annular groove is effectively prevented from splashing out along with rotation of the mounting disc, finally, the water in the annular groove flows out of a second water outlet hole, heat dissipation is conducted on the middle position of the thickness determining head, and the service life of the thickness determining head is prolonged; and the damage caused by over-high temperature of the stone mounting-free disc is prevented.

Description

Technical Field

[0001] This utility model relates to the field of thickness calibrating machine technology, specifically to a main head assembly of a stone thickness calibrating machine. Background Technology

[0002] A thickness calibrator is a specialized piece of equipment used for stone processing. It uses a high-speed rotating thickness calibrator head to mill the surface of the slab, resulting in a uniform thickness and flatness.

[0003] When a thickness calibrator grinds and cuts the surface of stone, the thickness calibrator head rotates continuously and rapidly, generating significant heat through friction with the stone surface. While existing technologies include cooling mechanisms to dissipate heat from the outer periphery of the thickness calibrator head, these mechanisms are located on the outer edge. During grinding and cutting, the coolant in these mechanisms cannot effectively dissipate heat to the center of the thickness calibrator head, leaving a large amount of heat in the center. This not only affects the lifespan of the thickness calibrator head but also causes excessive frictional temperature, damaging the surface of the stone being ground and resulting in unnecessary losses.

[0004] In view of this, the applicant has conducted in-depth research on the above-mentioned issues, which led to this case. Utility Model Content

[0005] The purpose of this utility model is to provide a main head assembly of a stone thickness calibrating machine that extends the service life of the thickness calibrating head and effectively protects the stone from damage caused by excessive temperature of the thickness calibrating head.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A main head assembly of a stone thickness calibrating machine includes a spindle box, a vertically arranged lifting bushing slidably connected within the spindle box, a main shaft rotatably connected to the lifting bushing via a first bearing and coaxially arranged with the lifting bushing, a mounting plate fixedly connected to the lower end of the main shaft and coaxially arranged with the main shaft, a first drive mechanism for driving the lifting bushing to move up and down, and a second drive mechanism for driving the main shaft to rotate. The bottom end of the lifting bushing has a countersunk hole coaxially arranged with the lifting bushing. The first bearing is installed in the countersunk hole. A limiting ring is fixedly connected to the bottom end of the lifting bushing to fix and restrict the first bearing within the countersunk hole. The lower end of the lifting bushing extends out of the spindle box. The upper end of the mounting plate has an annular boss coaxially arranged with the main shaft. A first annular baffle coaxially arranged with the annular boss is fixedly connected to the upper end of the mounting plate. The first annular baffle is located away from the main shaft relative to the annular boss. The upper end of the first annular baffle is integrally connected to a horizontally arranged second annular baffle. One end of the second annular baffle is integrally connected to the upper end of the first annular baffle, and the other end of the second annular baffle is oriented towards the axis of the mounting plate. The second annular baffle, the first annular baffle, and the upper surface of the mounting plate together form an annular groove. The bottom end of the lifting bushing is detachably connected to a first fixing member. The first fixing member is detachably connected to a first annular water pipe. The first annular water pipe is located at a position corresponding to the second annular baffle and the annular boss. A vertically arranged first water inlet pipe is connected to the first annular water pipe. Multiple first water outlet holes are opened on the side wall of the first annular water pipe. Each first water outlet hole is distributed in a ring around the axis of the first annular water pipe. Multiple second water outlet holes communicating with the annular groove are opened at the bottom of the annular groove. Each second water outlet hole is distributed around the axis of the mounting plate.

[0008] As an improvement of this utility model, the first driving mechanism includes a worm gear, a worm, a first pulley, a second pulley, a first belt, and a lifting motor. The worm gear is sleeved on the lifting bushing, and the inner sidewall of the worm gear is provided with an internal thread section. The outer peripheral wall of the lifting bushing is provided with an external thread section that mates with the internal thread section. The internal thread section and the external thread section are threadedly connected. The worm and the worm gear mesh. The worm is rotatably connected inside the spindle box. An end face bearing is provided between the worm and the inner sidewall of the spindle box. One end of the worm protrudes from the spindle box. The first pulley is fixedly connected to the end of the worm that protrudes from the spindle box. The lifting motor is fixedly connected to the spindle box. The second pulley is fixedly connected to the output shaft of the lifting motor. The first belt is wound between the first pulley and the second pulley.

[0009] As an improvement of this utility model, the second drive mechanism includes a rotary motor, a third pulley, a fourth pulley, and a second belt. The third pulley is rotatably connected to the upper end of the spindle box. A splined shaft coaxially arranged with the spindle is fixedly connected to the upper end of the spindle. A splined hole that mates with the splined shaft is opened at the center of the third pulley. The splined shaft is slidably connected in the splined hole. The fourth pulley is fixedly connected to the output shaft of the rotary motor. The second belt is wound between the third pulley and the fourth pulley.

[0010] As an improvement of this utility model, belt grooves are respectively provided on the outer peripheral surfaces of the first pulley, the second pulley, the third pulley and the fourth pulley, and an annular arc-shaped protrusion is provided on the outer peripheral surface of the bottom of each belt groove.

[0011] As an improvement of this utility model, a rotating handle is fixedly connected to the side of the first pulley away from the main shaft box.

[0012] As an improvement of this utility model, the first water inlet pipe is provided with a guide plate that is inclined relative to the horizontal plane.

[0013] As an improvement of this utility model, the first fixing member includes a first connecting rod and a second connecting rod. The second connecting rod is arranged vertically, and the bottom end of the second connecting rod is fixedly connected to the first annular water pipe. One end of the first connecting rod is fixedly connected to the bottom end of the lifting bushing by a first bolt, and the other end of the first connecting rod is fixedly connected to the top end of the second connecting rod by a second bolt.

[0014] As an improvement of this utility model, there are multiple first fixing members, and each first fixing member is distributed around the axis of the main shaft.

[0015] As an improvement of this utility model, the bottom end of the lifting bushing is detachably connected to a second fixing member, and the second fixing member is detachably connected to a second annular water pipe. The second annular water pipe is coaxially arranged with the mounting plate, and the outer diameter of the second annular water pipe is larger than the outer diameter of the mounting plate. A vertically arranged second water inlet pipe is connected to the second annular water pipe. Multiple third water outlet holes are opened at the bottom of the second annular water pipe, and each of the third water outlet holes is distributed around the axis of the second annular water pipe. The second fixing member includes a third connecting rod and a fourth connecting rod. The fourth connecting rod is arranged vertically, and the bottom end of the fourth connecting rod is fixedly connected to the second annular water pipe. One end of the third connecting rod is fixedly connected to the bottom end of the lifting bushing by a third bolt, and the other end of the third connecting rod is fixedly connected to the top end of the fourth connecting rod by a fourth bolt.

[0016] As an improvement of this utility model, a limiting groove is provided on the outer peripheral wall of the lifting bushing. The limiting groove is arranged along the axial direction of the lifting bushing. A threaded hole is provided on the side wall of the main shaft box. A fixing bolt is provided in the threaded hole. One end of the fixing bolt is screwed into the threaded hole and located in the limiting groove. The end of the fixing bolt located in the limiting groove abuts against the lifting bushing.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] By setting up a first annular baffle and a second annular baffle, the water in the annular groove is effectively prevented from splashing out as the mounting plate rotates. Finally, the water in the annular groove flows out from the second water outlet and dissipates heat to the middle part of the thickness head, extending the service life of the thickness head and protecting the stone from damage caused by excessive temperature of the thickness head. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main head assembly of a stone thickness fixing machine according to the present invention;

[0020] Figure 2 This is a structural schematic diagram of the main head assembly of a stone thickness calibrating machine from another angle.

[0021] Figure 3 This is a partial cross-sectional view of the first annular water pipe in this utility model;

[0022] Figure 4 This is a cross-sectional view of the main head assembly of a stone thickness calibrating machine according to the present invention;

[0023] Figure 5 This is a cross-sectional view of the fourth pulley in this utility model;

[0024] Figure 6 This is a schematic diagram of the lifting bushing in this utility model.

[0025] The corresponding markings in the diagram are as follows:

[0026] 10-Spindle box; 20-Lifting bushing;

[0027] 21-Spindle; 22-Mounting plate;

[0028] 23-Annular boss; 24-First annular baffle;

[0029] 25 - Annular groove; 26 - First annular water pipe;

[0030] 27-First water inlet pipe; 28-Second water outlet;

[0031] 29 - Worm gear; 30 - First pulley;

[0032] 31-Second pulley; 32-First belt;

[0033] 33-Lifting motor; 34-Rotating motor;

[0034] 35 - Third pulley; 36 - Fourth pulley;

[0035] 37 - Second belt; 38 - Belt groove;

[0036] 39 - Annular arc-shaped protrusion; 40 - Rotating handle;

[0037] 41-Guide plate; 42-First connecting rod;

[0038] 43 - Second connecting rod; 44 - Second annular water pipe;

[0039] 45 - Second water inlet pipe; 46 - Third water outlet;

[0040] 47 - Third connecting rod; 48 - Fourth connecting rod;

[0041] 49 - Fixing bolt; 50 - Limiting groove;

[0042] 51 - Limiting ring; 52 - Splined shaft;

[0043] 53 - Spline hole. Detailed Implementation

[0044] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and drawings of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0046] like Figures 1-6As shown, this embodiment provides a main head assembly for a stone thickness fixing machine, including a spindle box 10, a vertically slidable lifting sleeve 20 arranged vertically within the spindle box 10, a main shaft 21 rotatably connected to the lifting sleeve 20 via a first bearing and arranged coaxially with the lifting sleeve 20, a mounting plate 22 fixedly connected to the lower end of the main shaft 21 and arranged coaxially with the main shaft 21, a first drive mechanism for driving the lifting sleeve 20 to rise and fall, and a second drive mechanism for driving the main shaft 21 to rotate. The bottom end of the lifting sleeve 20 has a countersunk hole arranged coaxially with the lifting sleeve 20, the inner diameter of which is larger than the inner diameter of the lifting sleeve 20. A limiting ring 51 is fixedly connected to the bottom end of the lifting sleeve 20 to fix and restrict the first bearing within the countersunk hole. Specifically, the limiting ring 51... The ring 51 and the lifting sleeve 20 are arranged coaxially. The inner diameter of the limiting ring is smaller than the inner diameter of the countersunk hole. The upper side of the first bearing abuts against the stepped surface of the countersunk hole, and the lower side of the first bearing abuts against the upper side of the limiting ring 51. The lifting sleeve 20 moves up and down, driving the limiting ring 51 to move up and down. The limiting ring 51 moves up and down, pushing the first bearing to move up and down. The first bearing moves up and down, driving the main shaft 21 to move up and down. In this way, the main shaft 21 moves up and down with the lifting sleeve 20. The lower end of the lifting sleeve 20 passes through the main shaft box 10. The upper end of the mounting plate 22 has an annular boss 23 arranged coaxially with the main shaft 21. The upper end of the mounting plate 22 is fixedly connected to a first annular baffle 24 arranged coaxially with the annular boss 23. The first annular baffle 24 is away from the main shaft 21 relative to the annular boss 23. A horizontally arranged second annular baffle is integrally connected to the upper end of the first annular baffle. One end of the second annular baffle is integrally connected to the upper end of the first annular baffle, and the other end of the second annular baffle is oriented towards the axis of the mounting plate 22. The second annular baffle, the first annular baffle 24, and the upper end face of the mounting plate 22 together form an annular groove 25. The bottom end of the lifting bushing 20 is detachably connected to a first fixing member, and the first fixing member is detachably connected to a first annular water pipe 26. A vertically arranged first water inlet pipe 27 is connected to the first annular water pipe 26. Multiple first water outlet holes (not shown in the figure) are opened on the side wall of the first annular water pipe 26. Each first water outlet hole is distributed in a ring around the axis of the first annular water pipe 26. Multiple holes connected to the annular groove 25 are opened at the bottom of the annular groove 25. The second water outlet 28 is arranged around the axis of the mounting plate 22. Before use, the thickness fixing head is fixedly installed on the mounting plate 22, and the first water inlet pipe 27 is connected to an external water source. It should be noted that the thickness fixing head and the external water source are not part of the main head assembly of the stone thickness fixing machine provided in this embodiment, and need to be configured separately during use. When polishing stone, water from the external water source flows into the annular groove 25 through the first water outlet on the first annular water pipe 26. The first annular baffle 24 and the second annular baffle effectively prevent water in the annular groove 25 from splashing out as the mounting plate 22 rotates. Finally, the water in the annular groove 25 flows out from the second water outlet 28 and dissipates heat from the middle part of the thickness fixing head.Extend the service life of the thickness gauge and protect the stone from damage caused by excessive temperature of the thickness gauge.

[0047] The first drive mechanism includes a worm gear (not shown in the figure), a worm 29, a first pulley 30, a second pulley 31, a first belt 32, and a lifting motor 33. The worm gear is sleeved on the lifting bushing 20. The inner wall of the worm gear has an internal thread section, and the outer peripheral wall of the lifting bushing 20 has an external thread section that mates with the internal thread section. The internal thread section and the external thread section are threaded together, and the helical engagement between the worm gear and the lifting bushing 20 is achieved through the threaded engagement of the internal thread section and the external thread section. The worm 29 meshes with the worm gear and is rotatably connected inside the main spindle box 10. An end face bearing is provided between the worm 29 and the inner wall of the main spindle box 10. This end face bearing effectively prevents the worm 29 from axially moving. One end of the worm 29 extends out of the main spindle box 10. The first pulley 30... The worm gear 29 is fixedly connected to one end of the spindle box 10. The lifting motor 33 is fixedly connected to the spindle box 10. The second pulley 32 is fixedly connected to the output shaft of the lifting motor 33. The first belt 32 is wound between the first pulley 30 and the second pulley 31. In use, the lifting motor 33 starts and drives the second pulley 32 to rotate. The rotation of the second pulley 30 drives the first pulley 30 to rotate through the first belt 32. The rotation of the first pulley 30 drives the screw 29 to rotate. The rotation of the screw 29 drives the worm gear to rotate. The rotation of the worm gear drives the lifting sleeve 20, which is threadedly connected to the worm gear, to move up or down. The upward or downward movement of the lifting sleeve 20 drives the main shaft to move up or down, thereby realizing the adjustment of the height of the main shaft 21.

[0048] The second drive mechanism includes a rotary motor 34, a third pulley 35, a fourth pulley 36, and a second belt 37. The third pulley 35 is rotatably connected to the upper end of the spindle box 10. A splined shaft 52, coaxially arranged with the spindle 10, is fixedly connected to the upper end of the spindle 10. A splined hole 53, which splines and mates with the splined shaft 52, is opened at the center of the shaft of the third pulley 35. The splined shaft 52 is slidably connected in the splined hole 53. The fourth pulley 36 is fixedly connected to the output shaft of the rotary motor 34. The second belt 37 is wound between the third pulley 35 and the fourth pulley 36. In use, the rotary motor 34 starts and drives the fourth pulley 36 to rotate. The rotation of the fourth pulley 36 drives the third pulley 35 to rotate through the second belt 37. The rotation of the third pulley 35 drives the spindle 21 to rotate. The rotation of the spindle 21 drives the mounting plate 22 to rotate, thereby enabling the thickness head fixedly mounted on the mounting plate 22 to process the sheet metal.

[0049] The outer peripheral surfaces of the first pulley 30, the second pulley 31, the third pulley 35 and the fourth pulley 36 are respectively provided with belt grooves 38, and the outer peripheral surface of the bottom of each belt groove 38 is provided with an annular arc protrusion 39. By providing the annular arc protrusion 39, it has a self-positioning function.

[0050] A rotating handle 40 is fixedly connected to the side of the first pulley 30 away from the main spindle box 10. The rotating handle 40 drives the screw 29 to rotate, the screw 29 drives the worm gear to rotate, and the worm gear drives the lifting sleeve 20, which is threadedly connected to the worm gear, to move up or down. The lifting sleeve 20 moves up or down at the same time, driving the main shaft to move up or down, so as to realize manual adjustment of the height of the main shaft 21, and thus realize automatic or manual adjustment of the height of the main shaft 21.

[0051] The first water inlet pipe 27 is equipped with a guide plate 41 that is inclined relative to the horizontal plane. When in use, water from the external water source flows to one side of the first annular water pipe 26 through the guide plate 41, reducing water diversion and ensuring that the water in the first annular water pipe 26 can circulate.

[0052] The first fixing component includes a first connecting rod 42 and a second connecting rod 43. The second connecting rod 43 is arranged vertically, and its bottom end is fixedly connected to the first annular water pipe 26. One end of the first connecting rod 42 is fixedly connected to the bottom end of the lifting bushing 20 by a first bolt, and the other end of the first connecting rod 42 is fixedly connected to the top end of the second connecting rod 43 by a second bolt. Through the cooperation of the first connecting rod 42 and the second connecting rod 43, the first annular water pipe 26 is fixed on the lifting bushing 20.

[0053] There are multiple first fixing members, and each first fixing member is distributed around the axis of the main shaft 21. By setting multiple first fixing members, the first annular water pipe 26 is more firmly fixed.

[0054] The bottom end of the lifting bushing 20 is detachably connected to a second annular water pipe 44 via a second fixing member. The second annular water pipe 44 is coaxially arranged with the mounting plate 22, and the outer diameter of the second annular water pipe 44 is larger than the outer diameter of the mounting plate 22. A vertically arranged second water inlet pipe 45 is connected to the second annular water pipe 44. Multiple third water outlet holes 46 are opened at the bottom of the second annular water pipe 44, and each third water outlet hole 46 is distributed around the axis of the second annular water pipe 44. The second fixing member includes a third connecting rod 47 and a fourth connecting rod 48. The fourth connecting rod 48 is arranged vertically, and its bottom end is fixed to the second annular water pipe 44. The connection is as follows: one end of the third connecting rod 47 is fixedly connected to the bottom end of the lifting bushing 20 by the third bolt, and the other end of the third connecting rod 47 is fixedly connected to the top end of the fourth connecting rod 48 by the fourth bolt. It should be noted that the number of the second fixing parts is the same as the number of the first fixing parts and they are arranged in a one-to-one correspondence. The corresponding first connecting rod 42 and third connecting rod 47 are fixed at the same position on the lifting bushing 20. Before use, the second water inlet pipe 45 is connected to an external water source. When in use, the water in the external water source flows out through the third water outlet 46 on the second annular water pipe 44 and dissipates heat to the middle position of the thickness head.

[0055] A limiting groove 50 is provided on the outer peripheral wall of the lifting bushing 20. The limiting groove 50 is arranged along the axial direction of the lifting bushing 20. A threaded hole is provided on the side wall of the main spindle box 10. A fixing bolt 49 is provided in the threaded hole. One end of the fixing bolt 49 is screwed into the threaded hole and located in the limiting groove 50. The end of the fixing bolt 49 located in the limiting groove 50 abuts against the lifting bushing 20. The fixing bolt 49 is provided to limit the sliding of the lifting bushing 20 relative to the main spindle box 100.

[0056] The present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, and these modifications all fall within the protection scope of the present invention.

Claims

1. A main head assembly of a stone thickness calibrating machine, characterized in that, The device includes a spindle box, a vertically arranged lifting bushing slidably connected within the spindle box, a main shaft rotatably connected to the lifting bushing via a first bearing and coaxially arranged with the lifting bushing, a mounting plate fixedly connected to the lower end of the main shaft and coaxially arranged with the main shaft, a first drive mechanism for driving the lifting bushing to move up and down, and a second drive mechanism for driving the main shaft to rotate. The bottom end of the lifting bushing has a countersunk hole coaxially arranged with the lifting bushing. The first bearing is installed in the countersunk hole. A limiting ring is fixedly connected to the bottom end of the lifting bushing to fix and restrict the first bearing within the countersunk hole. The lower end of the lifting bushing extends out of the spindle box. The upper end of the mounting plate has an annular boss coaxially arranged with the main shaft. A first annular baffle coaxially arranged with the annular boss is fixedly connected to the upper end of the mounting plate. The first annular baffle is located away from the main shaft relative to the annular boss. The upper end is integrally connected to a horizontally arranged second annular baffle. One end of the second annular baffle is integrally connected to the upper end of the first annular baffle, and the other end of the second annular baffle is set towards the axis of the mounting plate. The second annular baffle, the first annular baffle, and the upper surface of the mounting plate together form an annular groove. The bottom end of the lifting bushing is detachably connected to a first fixing member. The first fixing member is detachably connected to a first annular water pipe. The first annular water pipe is located at a position corresponding to the second annular baffle and the annular boss. A vertically arranged first water inlet pipe is connected to the first annular water pipe. Multiple first water outlet holes are opened on the side wall of the first annular water pipe. Each first water outlet hole is distributed in a ring around the axis of the first annular water pipe. Multiple second water outlet holes communicating with the annular groove are opened at the bottom of the annular groove. Each second water outlet hole is distributed around the axis of the mounting plate.

2. The main head assembly of a stone thickness calibrating machine according to claim 1, characterized in that, The first drive mechanism includes a worm gear, a worm, a first pulley, a second pulley, a first belt, and a lifting motor. The worm gear is sleeved on the lifting bushing, and the inner sidewall of the worm gear has an internal thread section. The outer peripheral wall of the lifting bushing has an external thread section that mates with the internal thread section. The internal thread section and the external thread section are threadedly connected. The worm and the worm gear mesh. The worm is rotatably connected inside the spindle box. An end face bearing is provided between the worm and the inner sidewall of the spindle box. One end of the worm protrudes from the spindle box. The first pulley is fixedly connected to the end of the worm that protrudes from the spindle box. The lifting motor is fixedly connected to the spindle box. The second pulley is fixedly connected to the output shaft of the lifting motor. The first belt is wound between the first pulley and the second pulley.

3. The main head assembly of a stone thickness calibrating machine according to claim 2, characterized in that, The second drive mechanism includes a rotary motor, a third pulley, a fourth pulley, and a second belt. The third pulley is rotatably connected to the upper end of the spindle box. A splined shaft coaxially arranged with the spindle is fixedly connected to the upper end of the spindle. A splined hole that mates with the splined shaft is opened at the center of the third pulley. The splined shaft is slidably connected in the splined hole. The fourth pulley is fixedly connected to the output shaft of the rotary motor. The second belt is wound between the third pulley and the fourth pulley.

4. The main head assembly of a stone thickness calibrating machine according to claim 3, characterized in that, The first pulley, the second pulley, the third pulley and the fourth pulley are respectively provided with belt grooves on their outer peripheral surfaces, and each belt groove has an annular arc-shaped protrusion on its bottom outer peripheral surface.

5. The main head assembly of a stone thickness calibrating machine according to claim 2, characterized in that, A rotating handle is fixedly connected to the side of the first pulley away from the spindle box.

6. The main head assembly of a stone thickness calibrating machine according to claim 1, characterized in that, The first water inlet pipe is equipped with a guide plate that is inclined relative to the horizontal plane.

7. The main head assembly of a stone thickness calibrating machine according to claim 1, characterized in that, The first fixing component includes a first connecting rod and a second connecting rod. The second connecting rod is arranged vertically. The bottom end of the second connecting rod is fixedly connected to the first annular water pipe. One end of the first connecting rod is fixedly connected to the bottom end of the lifting bushing by a first bolt. The other end of the first connecting rod is fixedly connected to the top end of the second connecting rod by a second bolt.

8. The main head assembly of a stone thickness calibrating machine according to claim 7, characterized in that, There are multiple first fixing members, and each first fixing member is distributed around the axis of the main shaft.

9. The main head assembly of a stone thickness calibrating machine according to claim 1, characterized in that, The bottom end of the lifting bushing is detachably connected to a second fixing member, and the second fixing member is detachably connected to a second annular water pipe. The second annular water pipe is coaxially arranged with the mounting plate, and the outer diameter of the second annular water pipe is larger than the outer diameter of the mounting plate. A vertically arranged second water inlet pipe is connected to the second annular water pipe. Multiple third water outlet holes are opened at the bottom of the second annular water pipe, and each of the third water outlet holes is distributed around the axis of the second annular water pipe. The second fixing member includes a third connecting rod and a fourth connecting rod. The fourth connecting rod is arranged vertically, and the bottom end of the fourth connecting rod is fixedly connected to the second annular water pipe. One end of the third connecting rod is fixedly connected to the bottom end of the lifting bushing by a third bolt, and the other end of the third connecting rod is fixedly connected to the top end of the fourth connecting rod by a fourth bolt.

10. The main head assembly of a stone thickness calibrating machine according to claim 1, characterized in that, A limiting groove is provided on the outer peripheral wall of the lifting bushing. The limiting groove is arranged along the axial direction of the lifting bushing. A threaded hole is provided on the side wall of the main shaft box. A fixing bolt is provided in the threaded hole. One end of the fixing bolt is screwed into the threaded hole and located in the limiting groove. The end of the fixing bolt located in the limiting groove abuts against the lifting bushing.

Images