Shockproof high-precision spindle box structure

Abstract

The invention relates to the field of spindle boxes, and discloses a shockproof high-precision spindle box structure which comprises a spindle box body. A buffering assembly is arranged at the bottom end of the main spindle box body, first buffering springs are evenly installed at the bottom end of the main spindle box body, spring seats are installed at the bottom ends of the first buffering springs, auxiliary assemblies are arranged at the top ends of the spring seats, and connecting round rods are fixedly installed between the spring seats. Sliding seats are slidably mounted on one sides of the spring seats, the sliding seats are connected through second buffer springs, and connecting rods are rotatably mounted at the top ends of the sliding seats; by arranging the auxiliary assembly, the damping protection effect of the device on the main spindle box body is enhanced, the springback speed of a first buffer spring is reduced, resetting of the main spindle box body is smoother and more stable, then the working precision of the main spindle box body is improved, and the quality of machined products is improved.

Description

Technical Field

[0001] The invention relates to the field of spindle boxes, and more specifically to a shockproof high-precision spindle box structure. Background Art

[0002] The spindle box is one of the core components of the machine tool. It is mainly responsible for supporting and driving the working spindle, realizing the functions of starting, braking, speed change and reversing the spindle. It usually includes the spindle assembly, reversing mechanism, transmission mechanism, braking device, operating mechanism and lubrication device. The design and performance of the spindle box directly affect the overall processing capacity and accuracy of the machine tool. The spindle box is prone to vibration during operation, which increases the wear of parts, reduces the precision of machine tools, and further affects the quality of processed products. Therefore, the spindle box often needs to be equipped with a shock-absorbing assembly. The existing shock-absorbing assembly usually includes a spring, a spring seat, a connecting rod group and other components. The connecting rod group and the spring cooperate to improve the buffering effect when the spindle box vibrates, reduce the impact of the vibration on the spindle box, and thus improve the precision of the spindle box; Although the elastic deformation of the spring and the accumulation of elastic potential energy can effectively reduce the impact of vibration on the spindle box, when the spring rebounds, the spring releases the elastic potential energy and undergoes elastic deformation, which can easily cause the spring to rebound too quickly, thereby aggravating the wear of parts in the spindle box, reducing the stability of the spindle box, affecting the accuracy of the spindle box, and thus reducing the quality of the processed products. Summary of the invention

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a shock-proof and high-precision spindle box structure, which can overcome the problem that when the spring rebounds, the spring releases its elastic potential energy and undergoes elastic deformation, which makes the spring rebound too quickly, thereby aggravating the wear of parts in the spindle box, reducing the stability of the spindle box, affecting the accuracy of the spindle box, and further reducing the quality of the processed products.

[0004] To achieve this object, the present invention adopts the following technical solutions: The present invention provides a shockproof high-precision spindle box structure, comprising a spindle box main body; a buffer assembly is arranged at the bottom end of the spindle box main body, and the buffer assembly comprises a first buffer spring, a spring seat, a connecting round rod, a sliding seat, a second buffer spring and a connecting rod, the first buffer spring is evenly installed at the bottom end of the spindle box main body, the bottom end of the first buffer spring is installed with a spring seat, the top end of the spring seat is provided with an auxiliary assembly for preventing the first buffer spring from rebounding too quickly, a connecting round rod is fixedly installed between the spring seats, a sliding seat is slidably installed on one side of the spring seat, the sliding seats are slidably installed on the outer wall of the connecting round rod, the sliding seats are connected by the second buffer spring, the top end of the sliding seat is rotatably installed with a connecting rod, and the end of the connecting rod away from the sliding seat is rotatably installed at the bottom end of the spindle box main body; The auxiliary component includes a buffer tank arranged at the top of the spring seat, the inner wall of the buffer tank is slidably mounted with a driving rod, the top of the driving rod is provided with an adjustment component, the bottom end of the driving rod is fixedly mounted with a first buffer disc, the top of the first buffer disc is provided with a buffer slot hole, the bottom end of the first buffer disc is rotatably mounted with a second buffer disc, the cross-sectional radius of the second buffer disc is equal to the cross-sectional radius of the inner wall of the buffer tank, the bottom end of the second buffer disc is fixedly mounted with a third buffer disc, the tops of the second buffer disc and the third buffer disc are provided with a plurality of adjustment slot holes, and the top of the first buffer disc is provided with a cooling component for preventing the main spindle box body from overheating.

[0005] In a preferred technical solution of the present invention, the cooling component includes a blocking circular wall arranged at the top of the first buffer disc, a water inlet is arranged on one side of the blocking circular wall, the water inlet is opened on one side of the buffer tank, a water inlet pipe is fixedly installed on the inner wall of the water inlet, a water cooling device is installed on one end of the water inlet pipe, a driving bar is abutted against the bottom end of the third buffer disc, a tooth plate is fixedly installed on the inner side of the driving bar, a driving gear is meshingly installed on one side of the tooth plate, a ball valve is fixedly installed on the bottom end of the driving gear, a water outlet pipe is fixedly installed on the inner wall of the ball valve, one end of the water outlet pipe is fixedly installed on one side of the bottom end of the buffer tank, a first reset plate is fixedly installed on one side of the driving bar, a guide column is fixedly installed on one end of the first reset plate, the guide column is slidably installed on the inner wall of the second reset plate, the second reset plate is fixedly installed on the top of the spring seat, the first reset plate and the second reset plate are connected by a reset spring, and the reset spring is wound around the outer wall of the guide column.

[0006] In a preferred technical solution of the present invention, the adjustment assembly includes a first bevel gear arranged at the top end of the driving round rod, a second bevel gear is meshed and installed on one side of the first bevel gear, a telescopic rod is fixedly installed on one side of the second bevel gear, one end of the telescopic rod away from the second bevel gear passes through the main spindle box body and extends to one side of the main spindle box body, an adjusting round rod is fixedly installed on one end of the telescopic rod extending to one side of the main spindle box body, and a rotating round rod is fixedly installed on one side of the adjusting round rod.

[0007] In a preferred technical solution of the present invention, the ball valve includes a water-passing sphere and a sphere shell, the water-passing sphere is fixedly installed on the bottom end of the driving gear, the sphere shell is fixedly installed on the inner wall of the water inlet pipe, and the side wall of the sphere shell is provided with a straight through hole, and the distance between the upper and lower sides of the straight through hole is the same as the radius of the inner wall of the water-passing sphere.

[0008] In a preferred technical solution of the present invention, a fixing block is fixedly installed on one side of the adjusting round rod, the fixing block abuts against the inner wall of the fixing groove, the fixing groove is opened on one side of the main spindle box body, and there are multiple fixing grooves that are evenly distributed on the circumference of the adjusting round rod.

[0009] In a preferred technical solution of the present invention, the distance between the two ends of the guide column is greater than the maximum distance between the first reset plate and the second reset plate.

[0010] In a preferred technical solution of the present invention, the bottom end of the third buffer disc and the end of the driving bar close to the third buffer disc are both arranged as inclined portions, and the inclined portions fit each other.

[0011] In a preferred technical solution of the present invention, the distance between the bottom end of the driving bar and the spring seat is smaller than the maximum distance between the third buffer disk and the spring seat.

[0012] In a preferred technical solution of the present invention, the distance between the tooth plate and the two ends of the inclined portion of the driving bar is equal to one quarter of the radius of the driving gear.

[0013] The beneficial effects of the present invention are: The present invention provides a shockproof and high-precision spindle box structure. By setting an auxiliary component, when the spindle box body vibrates, the spindle box body drives the driving rod to move, and the driving rod drives the first buffer disc, the second buffer disc and the third buffer disc to move, so that the liquid filled in the buffer tank generates resistance to the first buffer disc, the second buffer disc and the third buffer disc, so that the auxiliary buffer component improves the buffering effect of the spindle box body, further enhances the shock absorption protection of the spindle box body, and when the first buffer spring rebounds, the first buffer spring releases elastic potential energy and undergoes elastic deformation to drive the spindle box body to move, and the spindle box body then drives the first buffer disc, the second buffer disc and the third buffer disc to move through the driving rod, and at this time, the liquid in the buffer tank passes through the buffer slot hole and the adjustment slot hole from the first buffer disc to the second buffer disc. The spring force of the first buffer spring is reduced, and the spring force of the first buffer spring is reduced, so that the ... By setting the adjustment component, when the machine tool processes larger or harder workpieces, the rotating rod can be rotated so that the rotating rod drives the first buffer disc to rotate through the adjusting rod, the telescopic rod, the second bevel gear and the first bevel gear, so that the buffer slot is rotated to the top of the smaller adjustment slot, thereby increasing the resistance encountered by the first buffer disc in the process of moving toward the water inlet, avoiding the large vibration amplitude when the machine tool processes larger or harder workpieces, causing the first buffer spring, the first buffer disc, the second buffer disc and the adjustment slot to move a longer distance, and the first buffer spring releases more elastic potential energy when rebounding, resulting in the auxiliary component being difficult to generate sufficient resistance, providing effective buffering protection for the resetting of the spindle box body, causing the spindle box body to vibrate twice, thereby aggravating the wear of parts in the spindle box, reducing the stability of the spindle box body, affecting the accuracy of the spindle box body, and thus reducing the problem of processed product quality, improving the applicability of the device, thereby improving the stability and accuracy of the spindle box body, and improving the processing quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the regulating component of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the cross-sectional structure of the cooling assembly of the present invention; Figure 5 For the present invention Figure 4 The enlarged view of point B in the middle; Figure 6 It is a schematic diagram of the cross-sectional structure of the auxiliary component of the present invention; Figure 7 It is a schematic cross-sectional view of the ball valve structure of the present invention.

[0015] In the figure: 1. Spindle box body; 2. First buffer spring; 3. Spring seat; 4. Connecting round rod; 5. Sliding seat; 6. Second buffer spring; 7. Connecting rod; 8. Buffer tank; 9. Driving round rod; 10. First buffer disc; 11. Buffer slot hole; 12. Second buffer disc; 13. Third buffer disc; 14. Adjusting slot hole; 15. Blocking round wall; 16. Water inlet; 17. Water inlet pipe; 18. Water cooling device; 19. Driving strip; 20. Tooth plate; 21. Driving gear; 22. Ball valve; 23. Water outlet pipe; 24. First reset plate; 25. Guide column; 26. Second reset plate; 27. Reset spring; 28. First bevel gear; 29. ​​Second bevel gear; 30. Telescopic rod; 31. Adjusting round rod; 32. Rotating round rod; 33. Water-passing sphere; 34. Sphere shell; 35. Fixed block; 36. Fixed groove. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0017] Embodiment 1, as Figure 1-Figure 7 As shown, a shockproof high-precision spindle box structure is provided in the embodiment, including a spindle box body 1; a buffer assembly is arranged at the bottom end of the spindle box body 1, and the buffer assembly includes a first buffer spring 2, a spring seat 3, a connecting round rod 4, a sliding seat 5, a second buffer spring 6 and a connecting rod 7, the first buffer spring 2 is evenly installed at the bottom end of the spindle box body 1, the bottom end of the first buffer spring 2 is installed with a spring seat 3, the top end of the spring seat 3 is provided with an auxiliary assembly for preventing the first buffer spring 2 from rebounding too quickly, the connecting round rod 4 is fixedly installed between the spring seats 3, the sliding seat 5 is slidably installed on one side of the spring seat 3, the sliding seats 5 are slidably installed on the outer wall of the connecting round rod 4, the sliding seats 5 are connected by the second buffer spring 6, the top end of the sliding seat 5 is rotatably installed with a connecting rod 7, and the end of the connecting rod 7 away from the sliding seat 5 is rotatably installed on the bottom end of the spindle box body 1; The auxiliary component includes a buffer tank 8 arranged at the top of the spring seat 3, the inner wall of the buffer tank 8 is slidably mounted with a driving rod 9, the top of the driving rod 9 is provided with an adjustment component, the bottom end of the driving rod 9 is fixedly mounted with a first buffer disc 10, the top of the first buffer disc 10 is provided with a buffer slot 11, the bottom end of the first buffer disc 10 is rotatably mounted with a second buffer disc 12, the cross-sectional radius of the second buffer disc 12 is equal to the cross-sectional radius of the inner wall of the buffer tank 8, the bottom end of the second buffer disc 12 is fixedly mounted with a third buffer disc 13, the tops of the second buffer disc 12 and the third buffer disc 13 are connected to each other. A plurality of adjusting slots 14 are provided at the ends of the first buffer disc 10, and a cooling component for preventing the main spindle box body 1 from overheating is provided at the top end of the first buffer disc 10; by providing an auxiliary component, when the main spindle box body 1 vibrates, the main spindle box body 1 drives the driving rod 9 to move, and the driving rod 9 drives the first buffer disc 10, the second buffer disc 12 and the third buffer disc 13 to move, so that the liquid filled in the buffer tank 8 generates resistance to the first buffer disc 10, the second buffer disc 12 and the third buffer disc 13, thereby the auxiliary buffer component improves the buffering effect on the main spindle box body 1, and further enhances the main spindle box body 1. Shock absorption protection, and when the first buffer spring 2 rebounds, the first buffer spring 2 releases its elastic potential energy, undergoes elastic deformation and drives the main spindle box body 1 to move, and the main spindle box body 1 then drives the first buffer disc 10, the second buffer disc 12 and the third buffer disc 13 to move through the driving round rod 9. At this time, the liquid inside the buffer tank 8 flows from the top of the first buffer disc 10 to the bottom of the third buffer disc 13 through the buffer slot 11 and the adjustment slot 14. This process consumes a lot of energy, thereby reducing vibration and impact, slowing down the speed at which the first buffer spring 2 drives the main spindle box body 1 to rebound, and avoiding the first When a buffer spring 2 rebounds, the first buffer spring 2 releases its elastic potential energy and undergoes elastic deformation, which can easily cause the first buffer spring 2 to rebound too quickly, causing the spindle box body 1 to vibrate secondary, thereby aggravating the wear of parts inside the spindle box, reducing the stability of the spindle box body 1, affecting the precision of the spindle box body 1, and thus reducing the quality of processed products. The device enhances the shock-absorbing and protective effect of the spindle box body 1, slows down the rebound speed of the first buffer spring 2, and makes the resetting of the spindle box body 1 smoother and more stable, thereby improving the precision of the spindle box body 1 during operation and improving the quality of processed products.

[0018] See also Figure 2-5 , Figure 7As shown, the cooling assembly includes a blocking circular wall 15 arranged at the top of the first buffer disc 10, a water inlet 16 is arranged on one side of the blocking circular wall 15, the water inlet 16 is opened on one side of the buffer tank 8, a water inlet pipe 17 is fixedly installed on the inner wall of the water inlet 16, and a water cooling device 18 is installed at one end of the water inlet pipe 17, the bottom end of the third buffer disc 13 is abutted against a driving bar 19, a tooth plate 20 is fixedly installed on the inner side of the driving bar 19, a driving gear 21 is meshed and installed on one side of the tooth plate 20, a ball valve 22 is fixedly installed on the bottom end of the driving gear 21, a water outlet pipe 23 is fixedly installed on the inner wall of the ball valve 22, and one end of the water outlet pipe 23 is fixedly installed Installed on one side of the bottom end of the buffer tank 8, one side of the driving bar 19 is fixedly installed with a first reset plate 24, one end of the first reset plate 24 is fixedly installed with a guide column 25, the guide column 25 is slidably installed on the inner wall of the second reset plate 26, the second reset plate 26 is fixedly installed on the top of the spring seat 3, the first reset plate 24 and the second reset plate 26 are connected by a reset spring 27, and the reset spring 27 is wound around the outer wall of the guide column 25; by setting a cooling component, when the main spindle box body 1 vibrates, the third buffer disc 13 drives the driving bar 19 to move away from the third buffer disc 13, so that the driving bar 19 passes through the tooth plate 20 and The driving gear 21 drives the ball valve 22 to open, and at the same time the second buffer disc 12 drives the blocking circular wall 15 to move, so that the blocking circular wall 15 stops blocking the coolant from flowing into the buffer tank 8 from the water inlet 16 from the water inlet pipe 17. At this time, the third buffer disc 13 pushes the coolant to flow out of the buffer tank 8 through the water outlet pipe 23, and when the first buffer spring 2 drives the spindle box body 1 to rebound, the second buffer disc 12 drives the blocking circular wall 15 to move, so that the blocking circular wall 15 moves to one side of the water inlet 16 to block the inflow of coolant. At the same time, the third buffer disc 13 stops squeezing the driving strip 19, so that the reset spring 27 releases its elastic potential energy and undergoes elastic deformation, pushing the spindle box body 1 to the side of the water inlet 16. The first reset plate 24 is moved so that the first reset plate 24 drives the ball valve 22 to close through the drive bar 19, the tooth plate 20 and the drive gear 21, so that the buffer tank 8 forms a closed cavity, which avoids the high temperature generated when the spindle box body 1 is working, which is easy to accelerate the wear of important components such as bearings and reduce their service life. In addition, high temperature is also easy to cause material expansion, resulting in slight changes in the position of mechanical components inside the spindle box, thereby affecting the processing accuracy. The service life of the spindle box body 1 is extended, and the stability of the spindle box body 1 during operation is improved, thereby improving the processing accuracy of the spindle box body 1 and the processing quality of the product.

[0019] To sum up, through the cooperation of auxiliary components and cooling components, the cooling efficiency of the water cooling device 18 can be adjusted according to the working state of the spindle box body 1. When the workload of the spindle box body 1 is large, the vibration frequency or amplitude of the spindle box body 1 increases, and at the same time, the spindle box body 1 generates more heat. At this time, the spindle box body 1 increases the reciprocating frequency or moving distance of the third buffer disk 13 through the auxiliary components, so that the circulation of the coolant is accelerated, thereby improving the cooling efficiency of the water cooling device 18, avoiding the problem that the water cooling device 18 is difficult to provide a suitable cooling effect when the workload of the spindle box body 1 is large and more heat is generated, thereby improving the stability and reliability of the device.

[0020] For example 2, please refer to Figure 1-4 , Figure 6 As shown, compared with Example 1, as another embodiment of the present invention, the adjustment component includes a first bevel gear 28 arranged at the top of the driving rod 9, and a second bevel gear 29 is meshed and installed on one side of the first bevel gear 28, and a telescopic rod 30 is fixedly installed on one side of the second bevel gear 29, and one end of the telescopic rod 30 away from the second bevel gear 29 passes through the main spindle box body 1 and extends to one side of the main spindle box body 1, and an adjustment rod 31 is fixedly installed on one end of the telescopic rod 30 extending to one side of the main spindle box body 1, and a rotating rod 32 is fixedly installed on one side of the adjustment rod 31; by setting the adjustment component, when the machine tool processes a larger or harder workpiece, the rotating rod 32 can be rotated, so that the rotating rod 32 drives the first buffer disc 10 to rotate through the adjusting rod 31, the telescopic rod 30, the second bevel gear 29 and the first bevel gear 28, so that the buffer slot hole 1 1 is rotated to the top of the smaller adjusting slot hole 14, thereby increasing the resistance encountered by the first buffer disc 10 in the process of moving toward the water inlet 16, avoiding the large vibration amplitude when the machine tool processes a larger or harder workpiece, causing the first buffer spring 2, the first buffer disc 10, the second buffer disc 12 and the adjusting slot hole 14 to move a longer distance, and the first buffer spring 2 releases more elastic potential energy when rebounding, resulting in difficulty for the auxiliary component to generate sufficient resistance, providing an effective buffering protection for the resetting of the spindle box body 1, causing the spindle box body 1 to vibrate twice, thereby aggravating the wear of parts in the spindle box, reducing the stability of the spindle box body 1, affecting the accuracy of the spindle box body 1, and thus reducing the problem of processing product quality, improving the applicability of the device, thereby improving the stability and accuracy of the spindle box body 1, and improving the processing quality of the product.

[0021] See also Figure 7As shown, the ball valve 22 includes a water-passing sphere 33 and a sphere shell 34. The water-passing sphere 33 is fixedly installed on the bottom end of the driving gear 21, and the sphere shell 34 is fixedly installed on the inner wall of the water inlet pipe 17. The side wall of the sphere shell 34 is provided with a straight through hole, and the distance between the upper and lower sides of the straight through hole is the same as the radius of the inner wall of the water-passing sphere 33; when the third buffer disc 13 moves toward the direction close to the ball valve 22, the ball valve 22 gradually opens, so that the third buffer disc 13 discharges the coolant into the water outlet pipe 23 through the ball valve 22, avoiding the problem that when the vibration amplitude of the spindle box body 1 is small, the third buffer disc 13 moves a small distance, and it is difficult to drive the ball valve 22 to open through the cooling component, resulting in difficulty in circulation of the coolant, thereby causing the cooling effect of the cooling component on the spindle box body 1 to decrease, thereby improving the cooling effect of the cooling component.

[0022] See also Figure 2-3 As shown, a fixing block 35 is fixedly installed on one side of the adjusting rod 31, and the fixing block 35 abuts against the inner wall of the fixing groove 36. The fixing groove 36 is opened on one side of the main spindle box body 1, and a plurality of fixing grooves 36 are opened and evenly distributed on the circumference of the adjusting rod 31; after adjusting the size of the adjusting slot hole 14 by rotating the rotating rod 32, the rotating rod 32 can be pushed, so that the rotating rod 32 drives the fixing block 35 to abut against the inner wall of the fixing groove 36 through the adjusting rod 31, thereby fixing the position of the rotating rod 32 and the adjusting rod 31. This avoids the problem that when the main spindle box body 1 vibrates, it is easy to cause the adjusting rod 31 and the rotating rod 32 to vibrate, causing the adjusting rod 31 and the rotating rod 32 to deflect, thereby driving the first buffer disc 10 to rotate through the telescopic rod 30, the second bevel gear 29, the first bevel gear 28 and the driving rod 9, causing the position of the buffer slot 11 to deflect, resulting in the first buffer disc 10 being subjected to huge water pressure when moving, hindering the resetting of the main spindle box body 1 and breaking the circulation of the coolant, thereby improving the stability and reliability of the auxiliary components during operation.

[0023] See also Figure 4-Figure 5 As shown, the distance between the two ends of the guide column 25 is greater than the maximum distance between the first reset plate 24 and the second reset plate 26; it can make the end of the guide column 25 away from the first reset plate 24 always slide on the inner wall of the second reset plate 26, avoiding the problem of easy deviation when the guide column 25 moves to the side of the second reset plate 26 close to the first reset plate 24, causing one end of the guide column 25 to abut against the side wall of the second reset plate 26, causing movement interference. In addition, when a gap is generated between the guide column 25 and the second reset plate 26, it is easy for this section of the reset spring 27 to lose the guiding protection effect of the guide column 25, causing bending and deformation problems, thereby improving the reliability and stability of the device, improving the guiding protection effect of the reset spring 27, and thus improving the service life of the reset spring 27.

[0024] See also Figure 4-6 As shown, the bottom end of the third buffer disc 13 and the end of the driving bar 19 close to the third buffer disc 13 are both arranged as inclined portions, and the inclined portions fit each other; when the third buffer disc 13 abuts against and pushes the driving bar 19, the vertical thrust can be decomposed into a horizontal thrust through the inclined portion, and the movement of the driving bar 19 can be made smoother and more stable through the setting of the inclined portion, thereby avoiding the situation where, when the vibration amplitude of the main shaft box body 1 is large, the third buffer disc 13 moves faster, the impact force on the driving bar 19 is large, and the driving bar 19 is easily stuck on one side of the buffer tank 8, thereby hindering the movement of the third buffer disc 13 and causing motion interference, thereby improving the stability and reliability of the device.

[0025] See also Figure 4-Figure 5 As shown, the distance between the bottom end of the driving bar 19 and the spring seat 3 is smaller than the maximum distance between the third buffer disk 13 and the spring seat 3; when the main spindle box body 1 does not vibrate, the bottom end of the third buffer disk 13 can be abutted against one end of the driving bar 19, thereby avoiding that when the vibration amplitude of the main spindle box body 1 is small, the third buffer disk 13 moves a small distance, which makes the driving bar 19 move a small distance, resulting in a small rotation angle of the water-passing ball 33, so that the ball valve 22 is not opened, resulting in the problem that the coolant cannot circulate, thereby improving the applicability of the device. In addition, by setting the distance between the bottom end of the driving bar 19 and the spring seat 3 to be smaller than the maximum distance between the third buffer disk 13 and the spring seat 3, the buffer tank 8 can also form a closed cavity when the third buffer disk 13 is reset, thereby increasing the resistance of the coolant to the first buffer disk 10, thereby preventing the first buffer spring 2 from exceeding the original length when rebounding, and avoiding the problem of additional vibration of the main spindle box body 1.

[0026] See also Figure 4-Figure 5 As shown, the distance between the tooth plate 20 and the two ends of the inclined portion of the driving bar 19 is equal to one quarter of the radius of the driving gear 21; when the third buffer disc 13 drives the driving bar 19 to move to the side of the blocking circular wall 15, the driving bar 19 drives the through hole of the water-passing sphere 33 to move completely to the side of the I-shaped through hole on the outer wall of the sphere shell 34 through the tooth plate 20 and the driving gear 21, thereby avoiding the problem that when the distance between the tooth plate 20 and the two ends of the inclined portion of the driving bar 19 is greater than or less than one quarter of the radius of the driving gear 21, the through hole of the water-passing sphere 33 is difficult to move completely to the side of the I-shaped through hole on the outer wall of the sphere shell 34, causing the coolant flow rate discharged from the third buffer disc 13 to decrease, thereby affecting the cooling effect of the water cooling device 18, thereby improving the stability and reliability of the cooling component, and improving the cooling effect of the water cooling device 18 on the spindle box body 1.

[0027] Working principle: Before the machine tool is operated, the rotating rod 32 is used for adjustment according to the nature of the workpiece. The rotating rod 32 is pulled to move the fixed block 35 to one side of the fixed groove 36. The rotating rod 32 is then rotated to drive the adjusting rod 31 to rotate. The adjusting rod 31 drives the telescopic rod 30 to rotate. The telescopic rod 30 drives the second bevel gear 29 to rotate. The second bevel gear 29 then drives the first bevel gear 28 to rotate. The first bevel gear 28 drives the driving rod 9 to rotate. The driving rod 9 drives the first buffer disc 1 0 is rotated, so that the first buffer disc 10 drives the buffer slot hole 11 to rotate to the top of the appropriate adjustment slot hole 14, and then the rotating rod 32 is pushed, so that the rotating rod 32 drives the fixing block 35 to move to the inner wall of the fixing slot 36 through the adjusting rod 31 to complete the position fixation. When the workpiece has a complex shape, high dimensional accuracy requirements, and moderate material hardness, the buffer slot hole 11 is adjusted to the top of the larger adjustment slot hole 14. When the workpiece is large, heavy or irregular in shape, the buffer slot hole 11 is adjusted to the top of the smaller adjustment slot hole 14; When the spindle box body 1 vibrates, the spindle box body 1 squeezes the first buffer spring 2, causing the first buffer spring 2 to undergo elastic deformation and accumulate elastic potential energy. At the same time, the spindle box body 1 drives one end of the connecting rod 7 to move, so that one end of the connecting rod 7 drives the other end to rotate. The end of the connecting rod 7 away from the spindle box body 1 drives the sliding seat 5 to move, and the sliding seat 5 squeezes the second buffer spring 6, causing the second buffer spring 6 to undergo elastic deformation and accumulate elastic potential energy, which plays a role in buffering and protecting the rotation of the spindle box body 1. At the same time, the spindle box body 1 drives the driving round rod 9 to move in the direction close to the buffer tank 8, and the driving round rod 9 drives the first buffer disc 10 to move, the first buffer disc 10 drives the second buffer disc 12 to move, and the second buffer disc 12 drives the third buffer disc 13 to move, so that the coolant filled in the buffer tank 8 hinders the movement of the third buffer disc 13 through water pressure, thereby further enhancing the buffering and protection effect on the spindle box body 1. The impact disc 10 drives the blocking circular wall 15 to move, so that the blocking circular wall 15 stops blocking the coolant from flowing from the water inlet pipe 17 through the water inlet 16 into the buffer tank 8. At the same time, the third buffer disc 13 abuts against and pushes the driving bar 19 to move away from the buffer tank 8. The driving bar 19 drives the tooth plate 20 to move, and the tooth plate 20 drives the driving gear 21 to rotate. The driving gear 21 drives the water-passing sphere 33 to rotate, so that the through hole of the water-passing sphere 33 rotates to one side of the I-shaped through hole on the outer wall of the sphere shell 34, so that the third buffer disc 13 can push the coolant to pass through the ball valve 22 and discharge from the buffer tank 8 into the water outlet pipe 23. When the vibration amplitude of the main spindle box body 1 is larger or the frequency is faster, the heat generated by the main spindle box body 1 is larger. At the same time, the amount of coolant discharged by the third buffer disc 13 is larger, and the cooling effect of the water cooling device 18 on the main spindle box body 1 is stronger, so that the water cooling device 18 can automatically adjust the cooling power according to the working state of the main spindle box body 1. When the first buffer spring 2 releases its elastic potential energy and undergoes elastic deformation to drive the main spindle box body 1 to reset, the main spindle box body 1 drives the first buffer disc 10, the second buffer disc 12 and the adjusting slot 14 to move away from the buffer tank 8 through the driving rod 9, so that the coolant in the buffer tank 8 flows from the top of the first buffer disc 10 to the bottom of the third buffer disc 13 through the buffer slot 11 and the adjusting slot 14, so that the resistance generated during the flow consumes a large amount of thrust generated when the buffer component rebounds, thereby preventing the buffer component from rebounding too fast and affecting the main spindle box body 1; When the first buffer spring 2 drives the main spindle box body 1 to complete the reset, the first buffer disc 10 drives the blocking circular wall 15 to move to one side of the water inlet 16, and the third buffer disc 13 moves to the top of the driving bar 19, so that the reset spring 27 releases its elastic potential energy, elastically deforms, and pushes the first reset plate 24 to move away from the guide column 25. The first reset plate 24 drives the driving bar 19 to move, and the driving bar 19 drives the ball valve 22 to close through the tooth plate 20 and the driving gear 21, so that the buffer tank 8 forms a closed cavity, which increases the resistance of the coolant to the first buffer disc 10, the second buffer disc 12 and the third buffer disc 13, thereby preventing the first buffer spring 2 from exceeding the original length when rebounding, thereby avoiding the problem of additional vibration of the main spindle box body 1.

[0028] Other technologies of this embodiment adopt existing technologies.

[0029] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A shockproof high-precision spindle box structure, characterized by: The invention comprises a main spindle box body (1); a buffer assembly is arranged at the bottom end of the main spindle box body (1), and the buffer assembly comprises a first buffer spring (2), a spring seat (3), a connecting rod (4), a sliding seat (5), a second buffer spring (6) and a connecting rod (7); the first buffer spring (2) is evenly installed at the bottom end of the main spindle box body (1); the bottom end of each of the first buffer springs (2) is installed with a spring seat (3); the top end of each of the spring seats (3) is provided with an auxiliary assembly for preventing the first buffer spring (2) from rebounding too quickly; a connecting rod (4) is fixedly installed between the spring seats (3); a sliding seat (5) is slidably installed on one side of each of the spring seats (3); the sliding seats (5) are slidably installed on the outer wall of the connecting rod (4); the sliding seats (5) are connected to each other via the second buffer spring (6); a connecting rod (7) is rotatably installed on the top end of each of the sliding seats (5); and the end of each of the connecting rods (7) away from the sliding seat (5) is rotatably installed on the bottom end of the main spindle box body (1); The auxiliary component comprises a buffer tank (8) arranged at the top of the spring seat (3), the inner wall of the buffer tank (8) is slidably mounted with a driving rod (9), the top of the driving rod (9) is provided with an adjustment component, the bottom end of the driving rod (9) is fixedly mounted with a first buffer disc (10), the top of the first buffer disc (10) is provided with a buffer slot hole (11), the bottom end of the first buffer disc (10) is rotatably mounted with a second buffer disc (12), the cross-sectional radius of the second buffer disc (12) is equal to the cross-sectional radius of the inner wall of the buffer tank (8), the bottom end of the second buffer disc (12) is fixedly mounted with a third buffer disc (13), the tops of the second buffer disc (12) and the third buffer disc (13) are provided with a plurality of adjustment slot holes (14), and the top of the first buffer disc (10) is provided with a cooling component for preventing the spindle box body (1) from overheating.

2. The shockproof high-precision spindle box structure according to claim 1 is characterized in that: The cooling assembly comprises a blocking circular wall (15) arranged at the top of the first buffer disc (10), a water inlet (16) is arranged on one side of the blocking circular wall (15), the water inlet (16) is opened on one side of the buffer tank (8), a water inlet pipe (17) is fixedly installed on the inner wall of the water inlet (16), a water cooling device (18) is installed at one end of the water inlet pipe (17), the bottom end of the third buffer disc (13) is abutted against a driving bar (19), a tooth plate (20) is fixedly installed on the inner side of the driving bar (19), a driving gear (21) is meshed and installed on one side of the tooth plate (20), and a ball valve is fixedly installed at the bottom end of the driving gear (21). (22), a water outlet pipe (23) is fixedly mounted on the inner wall of the ball valve (22), one end of the water outlet pipe (23) is fixedly mounted on one side of the bottom end of the buffer tank (8), a first reset plate (24) is fixedly mounted on one side of the drive bar (19), one end of the first reset plate (24) is fixedly mounted on a guide column (25), the guide column (25) is slidably mounted on the inner wall of the second reset plate (26), the second reset plate (26) is fixedly mounted on the top of the spring seat (3), the first reset plate (24) and the second reset plate (26) are connected by a reset spring (27), and the reset spring (27) is wound around the outer wall of the guide column (25).

3. The shockproof high-precision spindle box structure according to claim 1 is characterized in that: The adjustment assembly comprises a first bevel gear (28) arranged at the top end of the driving rod (9), a second bevel gear (29) is meshedly mounted on one side of the first bevel gear (28), a telescopic rod (30) is fixedly mounted on one side of the second bevel gear (29), an end of the telescopic rod (30) away from the second bevel gear (29) passes through the main spindle box body (1) and extends to one side of the main spindle box body (1), an adjustment rod (31) is fixedly mounted on one end of the telescopic rod (30) extending to one side of the main spindle box body (1), and a rotating rod (32) is fixedly mounted on one side of the adjustment rod (31).

4. The shockproof high-precision spindle box structure according to claim 2 is characterized in that: The ball valve (22) comprises a water-permeable ball (33) and a ball shell (34); the water-permeable ball (33) is fixedly mounted on the bottom end of the driving gear (21); the ball shell (34) is fixedly mounted on the inner wall of the water inlet pipe (17); a side wall of the ball shell (34) is provided with a straight-line through hole; the distance between the upper and lower sides of the straight-line through hole is the same as the radius of the inner wall of the water-permeable ball (33).

5. The shockproof high-precision spindle box structure according to claim 3 is characterized in that: A fixing block (35) is fixedly mounted on one side of the adjusting rod (31), and the fixing block (35) abuts against the inner wall of a fixing groove (36). The fixing groove (36) is provided on one side of the main spindle box body (1), and a plurality of fixing grooves (36) are provided and are evenly distributed around the circumference of the adjusting rod (31).

6. The shockproof high-precision spindle box structure according to claim 2 is characterized in that: The distance between the two ends of the guide column (25) is greater than the maximum distance between the first reset plate (24) and the second reset plate (26).

7. The shockproof high-precision spindle box structure according to claim 2 is characterized by: The bottom end of the third buffer disc (13) and one end of the driving bar (19) close to the third buffer disc (13) are both arranged as inclined portions, and the inclined portions fit each other.

8. The shockproof high-precision spindle box structure according to claim 2 is characterized in that: The distance between the bottom end of the driving bar (19) and the spring seat (3) is smaller than the maximum distance between the third buffer disc (13) and the spring seat (3).

9. The shockproof high-precision spindle box structure according to claim 2 is characterized in that: The distance between the tooth plate (20) and the two ends of the inclined portion of the driving bar (19) is equal to one quarter of the radius of the driving gear (21).

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