High-rigidity numerical control machining center spindle structure

Abstract

The invention relates to the technical field of main shafts, in particular to a high-rigidity numerical control machining center main shaft structure which comprises a main shaft body capable of changing water without shutdown, the main shaft structure further comprises a flow guide pipe, the two ends of the flow guide pipe are connected with a heat dissipation sleeve and a liquid storage tank respectively, and water can conveniently circulate between the heat dissipation sleeve and the liquid storage tank; the heat dissipation sleeve is located on the periphery of the main shaft body and absorbs heat generated in the working process of the main shaft body; a plugging plate is driven by a rotating motor to rotate, at the moment, the plugging plate can plug a water permeable hole, and a movable plate rotating along with the plugging plate can make contact with an arc-shaped guide plate in the rotating process and push the arc-shaped guide plate, a limiting plate and a water baffle to move till a plugging piece on the water baffle is inserted into a plugging groove in a liquid storage groove; at the moment, the liquid storage tank is divided into two sections, water located between the partition plate and the heat dissipation fins is discharged, low-temperature water is replaced, and the situation that the main shaft stops running, and then water in water cooling equipment is replaced is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of spindles, in particular to a high-rigidity CNC machining center spindle structure. Background Art

[0002] As an automated processing equipment, CNC machining center can ensure the shape accuracy and surface quality of produced parts during the production process. The spindle, as one of the indispensable components of CNC machining center, often needs to have strong rigidity to ensure smooth operation during long-term working process.

[0003] The spindle of a CNC machining center will inevitably generate a high amount of heat during long-term operation. In order to avoid a large amount of heat remaining on the spindle for a long time, which will lead to a decrease in the rigidity of the spindle, a cooling device is often installed outside the spindle to cool the spindle. Some existing cooling devices use water cooling to dissipate heat. However, since the spindle usually works for a long time when in use, the water in the water cooling device will absorb too much heat after dissipating heat from the spindle for a long time, and its own cooling speed will be lower than the heat generated by the spindle itself. At this time, the spindle can only be stopped and the water in the water cooling device must be replaced before it can be used again, resulting in reduced working efficiency of the spindle. Summary of the invention

[0004] The object of the present invention is to provide a high-rigidity CNC machining center spindle structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a high-rigidity CNC machining center spindle structure, including a spindle shaft body capable of changing water without stopping the machine, and the spindle structure also includes:

[0006] A guide pipe, wherein both ends of the guide pipe are respectively connected to a heat dissipation sleeve and a liquid storage tank, so that water can flow between the heat dissipation sleeve and the liquid storage tank;

[0007] A heat dissipation sleeve, located at the periphery of the spindle shaft body, absorbing the heat generated by the spindle shaft body during operation;

[0008] A liquid storage tank, in which water required for water cooling can be stored;

[0009] Two limit baffles are installed in the liquid storage tank, a rotating motor is arranged between the two limit baffles, a partition plate is fixedly installed on the two limit baffles, a movable slide is arranged on the partition plate, and a water baffle is slidably installed in the movable slide, and the water baffle is connected to the inner wall of the movable slide through a reset spring;

[0010] The water baffle, the rotating motor, the partition plate and the limit baffle are used to temporarily divide the interior of the liquid storage tank into two independent areas, so as to facilitate the replacement of water in the liquid storage tank that absorbs too much heat.

[0011] The rotating motor is provided with two blocking plates, each of which is provided with a fixing frame and a fixing plate, each of which is fixedly mounted with a plurality of telescopic connecting rods, and each of which is movably mounted with a plurality of movable plates in the fixing frame.

[0012] The partition plates are each provided with a plurality of water-permeable holes to facilitate the circulation of water in the liquid storage tank.

[0013] The water baffles are all fixedly installed with limit plates, and the limit plates are all fixedly installed with arc-shaped guide plates. The limit plates are attached to the side walls of the partition plates to prevent the return spring from pulling the water baffles completely into the movable slide grooves.

[0014] There are two blocking grooves on the inner wall of the liquid storage tank, and the water retaining plate is equipped with blocking sheets matching the blocking grooves to avoid a gap between the liquid storage tank and the water retaining plate after they are attached.

[0015] A plurality of heat dissipation fins are arranged on the outer wall of the liquid storage tank to increase the heat dissipation effect of the liquid storage tank.

[0016] A cover plate is arranged above the liquid storage tank, and a plurality of lifting rods are fixedly mounted on the cover plate, so as to facilitate closing the top opening of the liquid storage tank through the cover plate.

[0017] The top of the liquid storage tank is provided with a plurality of insertion holes, and the diameter of the insertion holes is the same as the diameter of the lifting rod.

[0018] A water pump is installed in the liquid storage tank, and the water in the liquid storage tank and the heat dissipation sleeve can be kept in a flowing state through the water pump.

[0019] The telescopic connecting rod is composed of a cross bar and a telescopic rod, and a groove matching the telescopic rod is arranged on the cross bar, and a spring is arranged in the groove, and two ends of the spring are respectively connected to the telescopic rod and the inner wall of the groove.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention drives the sealing plate to rotate by a rotating motor, at which time the sealing plate will block the water permeable hole, and the movable plate that rotates with the sealing plate will contact the arc guide plate during the rotation process and push the arc guide plate, the limit plate, and the water baffle plate to move until the sealing piece on the water baffle plate is inserted into the sealing groove on the liquid storage tank. At this time, the liquid storage tank is divided into two sections, and the water between the partition plate and the heat dissipation fins is discharged and replaced with low-temperature water, avoiding the need to stop the main shaft and then replace the water in the water cooling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall structure of the liquid storage tank of the present invention.

[0024] Figure 3 This is a schematic diagram of the cover plate installation structure of the present invention.

[0025] Figure 4 Schematic diagram of the internal structure of the liquid storage tank of the present invention.

[0026] Figure 5 It is a schematic diagram of the sealing plate structure of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the partition plate of the present invention.

[0028] In the figure: 1. spindle shaft; 2. heat dissipation sleeve; 3. guide tube; 4. liquid storage tank; 5. heat dissipation fins; 6. water pump; 7. rotating motor; 8. blocking plate; 9. fixed frame; 10. movable plate; 11. fixed plate; 12. telescopic connecting rod; 13. partition plate; 14. water permeable hole; 15. movable slide; 16. water baffle; 17. reset spring; 18. limit plate; 19. arc guide plate; 20. limit baffle; 21. cover plate; 22. lifting rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 6The present invention provides a technical solution: a high-rigidity CNC machining center spindle structure, including a spindle shaft body 1, a heat dissipation sleeve 2 is sleeved on the outer wall of the spindle shaft body 1, a plurality of guide tubes 3 are installed on the heat dissipation sleeve 2, and the other ends of the plurality of guide tubes 3 that are not connected to the heat dissipation sleeve 2 are commonly connected to a liquid storage tank 4, a water outlet is arranged at the bottom end of the liquid storage tank 4, a valve is installed at the water outlet position, and the water outlet is located between the heat dissipation fins 5 and the partition plate 13, a plurality of heat dissipation fins 5 are installed on the outer wall of the water outlet liquid storage tank 4, which can increase the heat dissipation effect of the liquid storage tank 4, two limit baffles 20 are fixedly installed in the liquid storage tank 4, and the partition plates 13 are fixedly installed on the outer walls of the two limit baffles 20, and the partition plates 13 are arranged on the partition plates 13, and the grooves are provided with grooves, and the grooves are provided with grooves. A plurality of water permeable holes 14 are arranged on the wall, and the water permeable holes 14 can conveniently enhance the water flow mixing effect on both sides of the partition plate 13 in the liquid storage tank 4. A movable slide 15 is arranged on the two partition plates 13, and a water baffle 16 is slidably installed in the movable slide 15, and the water baffle 16 and the inner wall of the movable slide 15 are connected by a plurality of return springs 17. After the water changing operation is completed, the return spring 17 can be contracted to disconnect the contact between the water baffle 16 and the liquid storage tank 4. The thrust generated by the return spring 17 is less than the thrust generated by the spring in the telescopic connecting rod 12, and is greater than the friction between the blocking groove and the blocking piece, so that the blocking piece can be pulled out of the blocking groove by contracting the return spring 17, and a limited position is fixedly installed on the water baffle 16. Plate 18, during use, the return spring 17 contracts to make the water baffle plate 16 be received in the movable slide groove 15, and the limiting plate 18 is fitted with the side wall of the partition plate 13 to prevent the water baffle plate 16 from being completely received in the movable slide groove 15, and the limiting plate 18 is fixedly installed with an arc guide plate 19, and a total of two blocking grooves are arranged on the inner wall of the liquid storage tank 4, and the water baffle plate 16 is installed with a blocking piece matching the blocking groove, and the blocking piece is made of rubber, which can facilitate the process of replacing the water in the liquid storage tank 4. Enter the blocking groove through the blocking piece, which can avoid the gap between the liquid storage tank 4 and the water baffle plate 16, and a rotating motor 7 is arranged between the two limiting baffles 20, and a hidden groove is arranged on the inner wall of the bottom end of the liquid storage tank 4, and the rotating motor 7 is installed in the hidden groove. , and the output shaft of the rotating motor 7 extends out of the hidden groove and is flush with the top height of the limit baffle 20. Two blocking plates 8 are fixedly installed on the outer wall of the output shaft of the rotating motor 7. After the blocking plate 8 follows the rotation of the rotating motor 7 and fits the partition plate 13, it can block the water permeable hole 14 on the partition plate 13 to prevent water from continuing to flow. A fixed frame 9 and a fixed plate 11 are fixedly installed on the blocking plate 8. A plurality of telescopic connecting rods 12 are fixedly installed on the fixed plate 11. The telescopic connecting rod 12 consists of a cross bar and a telescopic rod. One side of the cross bar is fixedly connected to the fixed plate 11, and one side of the telescopic rod is fixedly connected to the movable plate 10. A groove matching the telescopic rod is provided on the cross bar, and a spring is provided in the groove. The two ends of the spring are respectively connected to the telescopic rod and the inner wall of the groove.A plurality of telescopic connecting rods 12 are installed together on the movable plate 10. The width and height of the movable plate 10 are the same as those of the inner frame on the fixed frame 9, so as to ensure that the movable plate 10 can move in translation. The sealing plate 8 is driven to rotate by the rotating motor 7. At this time, the sealing plate 8 will block the water permeable hole 14, and the movable plate 10 that rotates with the sealing plate 8 will work through the spring in the telescopic connecting rod 12 during the rotation process, so that the telescopic rod, which is one of the components of the telescopic connecting rod 12, pushes the movable plate 10 to contact the arc guide plate 19 and pushes the arc guide plate 19, the limit plate 18, and the water baffle 16 to move until the blocking piece on the water baffle 16 is inserted into the blocking groove on the liquid storage tank 4. At this time, the water in the liquid storage tank 4 is divided into two sections, which is convenient for replacing the water in the liquid storage tank 4 and avoids a large amount of water loss in the liquid storage tank 4 during the water replacement process, which causes the water pump 6 to be unable to continue to work normally.

[0031] A water pump 6 is installed in the liquid storage tank 4 , and the water outlet of the water pump 6 is connected to the heat dissipation sleeves 2 extending into the plurality of liquid storage tanks 4 , so as to facilitate the water in the liquid storage tank 4 to be transported into the heat dissipation sleeves 2 .

[0032] A plurality of insertion holes are provided at the top of the liquid storage tank 4, and lifting rods 22 are movably inserted in the insertion holes. A cover plate 21 is commonly connected to the plurality of lifting rods 22. By inserting all the lifting rods 22 into the insertion holes, the cover plate 21 can be conveniently made to fit the top of the liquid storage tank 4 to seal the top opening of the liquid storage tank 4.

[0033] When the present invention is in use, the water in the liquid storage tank 4 flows between the heat dissipation sleeve 2 and the liquid storage tank 4 through the guide pipe 3 when the water pump 6 is running, and absorbs the heat generated during the operation of the main shaft body 1 during the flow process. When the temperature of the water in the liquid storage tank 4 is too high, the rotating motor 7 can be controlled to rotate so that the blocking plate 8 on the rotating motor 7 fits the water permeable hole 14 on the partition plate 13. At this time, the telescopic connecting rod 12 will push the movable plate 10 to move and contact the arc guide plate 19. The arc guide plate 19 is displaced due to the push of the movable plate 10, so that the limit plate 18 and the water retaining plate 16 connected to the arc guide plate 19 move until The sealing piece on the water baffle 16 is inserted into the sealing groove on the liquid storage tank 4. At this time, the cover plate 21 is directly pulled upward to open the opening on the large-opening liquid storage tank 4, and the water between the partition plate 13 and the heat dissipation fins 5 is discharged and replaced with low-temperature water. After the water replacement is completed, the rotating motor 7 is controlled to reverse to keep the water permeable hole 14 unobstructed. At this time, the movable plate 10 moving in the opposite direction will be separated from the contact with the arc guide plate 19. The water baffle 16 can be pulled into the movable slide groove 15 by contracting the reset spring 17 until the limit plate 18 contacts the partition plate 13, so that the newly replaced water in the liquid storage tank 4 is mixed with the high-temperature water for continued use.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-rigidity CNC machining center spindle structure, including a spindle body capable of changing water without stopping the machine, characterized in that: The main shaft structure also includes: A guide pipe, wherein both ends of the guide pipe are respectively connected to a heat dissipation sleeve and a liquid storage tank, so that water can flow between the heat dissipation sleeve and the liquid storage tank; A heat dissipation sleeve, located at the periphery of the spindle shaft body, absorbing the heat generated by the spindle shaft body during operation; A liquid storage tank, in which water required for water cooling can be stored; Two limit baffles are installed in the liquid storage tank, a rotating motor is arranged between the two limit baffles, a partition plate is fixedly installed on the two limit baffles, a movable slide is arranged on the partition plate, and a water baffle is slidably installed in the movable slide, and the water baffle is connected to the inner wall of the movable slide through a reset spring; The water baffle, the rotating motor, the partition plate and the limit baffle are used to temporarily divide the interior of the liquid storage tank into two independent areas, so as to facilitate the replacement of water in the liquid storage tank that absorbs too much heat.

2. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: The rotating motor is provided with two blocking plates, each of which is provided with a fixing frame and a fixing plate, each of which is fixedly mounted with a plurality of telescopic connecting rods, and each of which is movably mounted with a plurality of movable plates in the fixing frame.

3. The high rigidity CNC machining center spindle structure according to claim 1 is characterized in that: The partition plates are each provided with a plurality of water-permeable holes to facilitate the circulation of water in the liquid storage tank.

4. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: The water baffles are all fixedly installed with limit plates, and the limit plates are all fixedly installed with arc-shaped guide plates. The limit plates are attached to the side walls of the partition plates to prevent the return spring from pulling the water baffles completely into the movable slide grooves.

5. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: There are two blocking grooves on the inner wall of the liquid storage tank, and the water retaining plate is equipped with blocking sheets matching the blocking grooves to avoid a gap between the liquid storage tank and the water retaining plate after they are attached.

6. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: A plurality of heat dissipation fins are arranged on the outer wall of the liquid storage tank to increase the heat dissipation effect of the liquid storage tank.

7. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: A cover plate is arranged above the liquid storage tank, and a plurality of lifting rods are fixedly mounted on the cover plate, so as to facilitate closing the top opening of the liquid storage tank through the cover plate.

8. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: The top of the liquid storage tank is provided with a plurality of insertion holes, and the diameter of the insertion holes is the same as the diameter of the lifting rod.

9. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: A water pump is installed in the liquid storage tank, and the water in the liquid storage tank and the heat dissipation sleeve can be kept in a flowing state through the water pump.

10. The high rigidity CNC machining center spindle structure according to claim 1, characterized in that: The telescopic connecting rod is composed of a cross bar and a telescopic rod, and a groove matching the telescopic rod is arranged on the cross bar, and a spring is arranged in the groove, and two ends of the spring are respectively connected to the telescopic rod and the inner wall of the groove.

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