Vertical and horizontal conversion head and CNC machine tools

Abstract

The present invention relates to the technical field of numerical control machine tools, and discloses a vertical-horizontal conversion swing head and a numerical control machine tool, comprising: a swing head housing and a spindle housing; a connecting plate, a reducer, a driving motor, a driving gear, a driven gear, a cam, a roller, a transmission shaft and a turntable bearing are arranged in the swing head housing; the connecting plate is fixedly connected to the swing head housing, and the reducer is installed on the connecting plate; the driving motor is arranged in the area formed between the transmission shaft and the mounting surface of the swing head housing, and the output shaft of the driving motor is connected to the reducer in a transmission manner; the end of the reducer away from the driving motor is connected to the driving gear, the driving gear is meshed with the driven gear, the driven gear is arranged at one end of the cam, the cam is meshed with the roller, and the roller is connected to the transmission shaft in a transmission manner; the transmission shaft is fixedly connected to the spindle housing through the turntable bearing. The present invention arranges the driving motor and the transmission structure in the swing head housing, and can reduce the volume of the swing head while realizing the vertical-horizontal conversion of the swing head, thereby reducing the occupied space of the numerical control machine tool.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, and in particular to a vertical-horizontal conversion swing head and a numerically controlled machine tool. Background Art

[0002] As people continue to pursue machine tool processing efficiency and precision, machining centers with only a single processing method, such as horizontal machining centers or vertical machining centers, can no longer meet people's needs.

[0003] At present, for CNC machine tools that can realize both vertical and horizontal processing modes on a single machine tool, power is provided by a drive motor to realize the vertical and horizontal conversion of the swing head; however, the drive motors are currently arranged on the outside of the swing head box, resulting in the overall size of the swing head being too large, occupying a large usable space, and further resulting in the CNC machine tool occupying too much space. Summary of the invention

[0004] In view of this, the present invention provides a vertical-horizontal conversion swing head and a CNC machine tool to solve the problem of how to achieve vertical-horizontal conversion of the swing head while preventing the CNC machine tool from occupying too much space.

[0005] In a first aspect, the present invention provides a vertical-horizontal conversion swing head, comprising:

[0006] Swing head box and spindle box;

[0007] The swing head box has a mounting surface;

[0008] The swing head box is provided with a connecting plate, a reducer, a driving motor, a driving gear, a driven gear, a cam, a roller, a transmission shaft and a turntable bearing;

[0009] The connecting plate is fixedly connected to the swing head box, and the reducer is mounted on the connecting plate;

[0010] The drive motor is arranged in the area formed between the transmission shaft and the mounting surface, and the output shaft of the drive motor is drivingly connected to the reducer;

[0011] The driving gear is connected to one end of the reducer away from the driving motor, the driving gear is meshed with the driven gear, the driven gear is arranged at one end of the cam, the cam is meshed with the roller, and the roller is drivingly connected to the transmission shaft;

[0012] The transmission shaft is fixedly connected to the spindle housing through the turntable bearing, and when the transmission shaft rotates, the spindle housing is driven to rotate.

[0013] Beneficial effects: The reducer is fixedly connected to the swing head housing through a connecting plate, and then the reducer is fixed to the connecting plate. A driving gear is connected to one end of the reducer, and the driven gear is meshed and connected to the driving gear and arranged at one end of the cam. The cam is meshed with the roller, and the roller is connected to the transmission shaft. The transmission shaft is fixedly connected to the spindle housing through the turntable bearing; a driving motor is installed at the other end of the reducer, and the driving motor is arranged in the area formed between the mounting surface of the swing head housing and the transmission shaft. By using the transmission form of the reducer, driving gear, driven gear, cam and roller, it has good transmission rigidity, large transmission torque, wide application range, and is suitable for various medium and heavy load conditions.

[0014] The driving motor provides power, and transmits the power to the reducer through the output shaft, and transmits the power to the driving gear through the reducer, thereby driving the driving gear to rotate; further driving the driven gear meshing with the driving gear to rotate, and further transmitting the power to the cam through the driven gear; the rotation of the cam drives the roller meshing with the cam to rotate, and the roller drives the transmission shaft to rotate, so that the spindle box can be rotated to achieve the vertical and horizontal posture conversion of the spindle box; the CNC machine tool has two processing modes of vertical and horizontal, which effectively improves the processing efficiency and processing accuracy. By arranging a connecting plate, a reducer, a driving motor, a driving gear, a driven gear, a cam, a roller, a transmission shaft and a turntable bearing in the swing head box, the overall volume of the vertical and horizontal conversion swing head can be effectively reduced, thereby reducing the occupied area of ​​the CNC machine tool.

[0015] In an optional embodiment, the axis of the transmission shaft forms a first angle with an extension line of the mounting surface, and the angle of the first angle is 45 degrees.

[0016] Beneficial effects: The transmission shaft is tilted relative to the installation surface, and the axis of the transmission shaft forms an angle of 45 degrees with the extension line of the installation surface, which helps to achieve a more flexible layout of the swing head in a limited space and makes the entire swing head structure more compact; when the swing head rotates, the swing head can also rotate in a smaller space, which can further reduce the space occupied by the CNC machine tool and improve space utilization.

[0017] In an optional embodiment, a second angle exists between a plane formed by the axis of the drive motor and the axis of the cam and a horizontal plane.

[0018] Beneficial effect: By setting a second angle between the plane formed by the axis of the drive motor and the axis of the cam and the horizontal plane, it is helpful to reduce the impact of the roller transmission on the cam, enhance the stability of the transmission, reduce the impact and make the cam and roller run smoothly.

[0019] In an optional embodiment, the second angle is 5 degrees to 15 degrees.

[0020] In an optional embodiment, the drive motor is a water-cooled drive motor; an annular groove is provided on one side of the connecting plate;

[0021] A sealing plate is also provided in the swing head box, and the sealing plate is fixedly connected to one side of the connecting plate where the annular groove is provided, so as to enclose the annular groove to form a closed water cooling channel.

[0022] Beneficial effects: By setting the drive motor as a water-cooled drive motor, the heat generated by the drive motor can be dissipated more efficiently, and can better cope with high-power and long-term operating conditions; by fixing the sealing plate to the side of the connecting plate where the annular groove is provided, so as to enclose the annular groove to form a closed water-cooling channel, for the cooling medium to flow in the cooling channel, it can effectively absorb the heat generated by the drive motor, reducer, etc. during operation, effectively reduce the temperature inside the swing head box, avoid the influence of the heat of the drive motor and reducer on the swing head accuracy, and ensure the normal operation and stable performance of the vertical and horizontal conversion swing head.

[0023] In an optional embodiment, a water cooling inlet and a water cooling outlet are provided on one side of the water cooling channel;

[0024] A water baffle is provided in the water cooling channel, and the water baffle is provided between the water cooling inlet and the water cooling outlet;

[0025] The water baffle is used to allow the cooling medium to form a cooling path in the water-cooling channel, where the cooling medium enters from the water-cooling inlet, circles around the water-cooling channel, and then flows out from the water-cooling outlet.

[0026] Beneficial effects: By arranging a water-cooling inlet and a water-cooling outlet in the water-cooling channel, and connecting the water-cooling inlet and the water-cooling outlet with the water-cooling pipeline in the swing head box respectively, the cooling medium flows into the water-cooling channel from the water-cooling inlet, and then flows out from the water-cooling outlet, so as to dissipate heat for the drive motor and the reducer; by arranging a water baffle in the water-cooling channel, and arranging the water baffle between the water-cooling inlet and the water-cooling outlet, the cooling medium flows into the water-cooling channel from the water-cooling inlet, and then flows out from the water-cooling outlet after circling the water-cooling channel for one cycle, thereby avoiding the cooling medium from directly flowing into the water-cooling outlet from the water-cooling inlet, and the heat dissipation efficiency inside the swing head box can be improved.

[0027] In an optional embodiment, a plurality of flow-slowing bosses are provided at intervals along the circumferential direction in the water-cooling channel, and the height of the flow-slowing bosses is less than the depth of the annular groove.

[0028] Beneficial effect: By arranging multiple slow-flow bosses with a height less than the depth of the annular groove at circumferential intervals in the water cooling channel, the flow velocity of the cooling medium in the water cooling channel can be reduced, so that the cooling medium can fully absorb the heat in the swing head box to better dissipate the heat inside the swing head box.

[0029] In an optional embodiment, a locking device is further provided in the swing head box, and the locking device includes a cylinder, a piston, a pressure plate, a first brake pad, a second brake pad, a first gasket, a second gasket and an elastic member;

[0030] The first brake pad is fixed on the transmission shaft, and the second brake pad is fixed on the swing head box;

[0031] The first gasket is arranged between the second brake pad and the swing head box, and the second gasket is arranged between the pressure plate and the first brake pad;

[0032] The elastic member is arranged between the cylinder body and the piston.

[0033] Beneficial effect: When there is no hydraulic oil in the locking device, the elastic member between the cylinder body and the piston will push the piston to press the first brake pad and the second brake pad to achieve the locking function, ensuring that the vertical-horizontal conversion swing head has self-locking ability in an emergency, avoiding the sudden drop of the vertical-horizontal conversion swing head, and thus protecting the vertical-horizontal conversion swing head. When the hydraulic oil pushes the piston to press the first brake pad and the second brake pad, the locking force of the vertical-horizontal conversion swing head is increased to ensure that the vertical-horizontal conversion swing head is suitable for medium and heavy cutting conditions; when there is no need for the piston to press the brake pad, hydraulic oil will be introduced between the piston and the pressure plate to push the piston in the opposite direction to separate the first brake pad and the second brake pad from each other. By arranging the first gasket between the second brake pad and the swing head box, and arranging the second gasket between the pressure plate and the first brake pad, the brake pad can be prevented from directly contacting the swing head box and the pressure plate, which can help disperse the pressure on the brake pad and make it more evenly distributed on the swing head box or the pressure plate, reducing the situation of excessive local pressure; further, it can prevent the brake pad from directly rubbing against the swing head box or the pressure plate, avoiding scratches or damage to the components in the swing head box.

[0034] In an optional embodiment, an annular groove for introducing hydraulic oil is provided on the outer circumference of the piston.

[0035] Beneficial effect: By providing an annular groove for introducing hydraulic oil on the outer circumference of the piston, the piston can evenly press the brake pad; and the annular groove can store a certain amount of hydraulic oil, which can play a buffering role during the movement of the piston, reduce impact and vibration, make the piston movement more stable, and enhance the locking force.

[0036] In an optional embodiment, an electric spindle is provided in the spindle housing, and a terminal cover of the electric spindle is provided with a protective cover;

[0037] The spindle housing is provided with a hole for allowing the electric spindle cable and pipeline to pass through, and the hole and the electric spindle cable and the pipeline are sealed by a sealing structure.

[0038] Beneficial effects: By setting a shield at the wiring terminal of the electric spindle, it is possible to prevent collisions with external objects, intrusion of dust or impurities, thereby reducing interference and damage to the operation of the electric spindle. The holes on the spindle housing allow the cables and pipes required by the electric spindle to be connected to the external control system and supply source; the sealing structure can prevent external dust, water vapor and other impurities from entering the spindle housing through the holes and affecting the normal operation of the electric spindle; at the same time, it also prevents the coolant, lubricating oil, etc. in the spindle housing from leaking out, which can keep the inside of the spindle housing clean and the working environment stable, and help improve the reliability and service life of the electric spindle.

[0039] In a second aspect, the present invention further provides a CNC machine tool, comprising: the above-mentioned vertical-horizontal conversion swing head, wherein the vertical-horizontal conversion swing head is connected to the CNC machine tool via the mounting surface of the swing head box. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a structural schematic diagram of a vertical-horizontal conversion swing head according to an embodiment of the present invention;

[0042] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0043] Figure 3 It is a schematic structural diagram of a cam in a vertical-horizontal conversion swing head according to an embodiment of the present invention;

[0044] Figure 4 This is a schematic structural diagram of a connecting plate in a vertical-horizontal conversion swing head according to an embodiment of the present invention;

[0045] Figure 5 This is a schematic structural diagram of the cooperation between a connecting plate and a sealing plate in a vertical-horizontal conversion swing head according to an embodiment of the present invention;

[0046] Figure 6 The present invention is a partial structural schematic diagram of a vertical-horizontal conversion swing head according to an embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 100, swing head box; 101, connecting plate; 1011, water cooling inlet; 1012, water cooling outlet; 1013, water baffle; 1014, slow flow boss; 1015, water cooling channel; 102, reducer; 103, drive motor; 104, driving gear; 105, driven gear; 106, cam; 107, roller; 108, transmission shaft; 109, turntable bearing; 110, locking device; 111, cylinder body; 112, piston; 113, pressure plate; 114, first brake pad; 115, second brake pad; 116, first gasket; 117, second gasket; 120, mounting surface; 130, sealing plate; 200, spindle box; 210, electric spindle; 220, protective cover; 230, channel. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0050] Combine the following Figures 1 to 6 , describing an embodiment of the present invention.

[0051] According to an embodiment of the present invention, on the one hand, Figure 1 , Figure 3 As shown, a vertical-horizontal conversion swing head is provided, comprising: a swing head box 100 and a spindle box 200; the swing head box 100 has a mounting surface 120; a connecting plate 101, a reducer 102, a driving motor 103, a driving gear 104, a driven gear 105, a cam 106, a roller 107, a transmission shaft 108 and a turntable bearing 109 are arranged in the swing head box 100; the connecting plate 101 is fixedly connected to the swing head box 100, and the reducer 102 is installed on the connecting plate 101; the driving motor 103 is arranged at the transmission shaft 108 and the mounting surface 120 20, the output shaft of the drive motor 103 is connected to the reducer 102; the end of the reducer 102 away from the drive motor 103 is connected to the driving gear 104, the driving gear 104 is meshed with the driven gear 105, the driven gear 105 is arranged at one end of the cam 106, the cam 106 is meshed with the roller 107, and the roller 107 is connected to the transmission shaft 108; the transmission shaft 108 is fixedly connected to the spindle housing 200 through the turntable bearing 109, and when the transmission shaft 108 rotates, the spindle housing 200 is driven to rotate.

[0052] In this embodiment, the connecting plate 101 can be fixedly connected to the swing head housing 100 by bolts, and the reducer 102 is fixed to the connecting plate 101 by bolts. A driving gear 104 is connected to one end of the reducer 102, and a driven gear 105 is meshed and connected to the driving gear 104 and arranged at one end of a cam 106. The cam 106 is meshed and arranged with a roller 107, and the roller 107 is connected to a transmission shaft 108 for transmission. The transmission shaft 108 is fixedly connected to the spindle housing 200 by screws and a turntable bearing 109; a driving motor 103 is installed at the other end of the reducer 102, and the driving motor 103 is arranged between the mounting surface 120 of the swing head housing 100 and the transmission shaft 108. By using the transmission form of the reducer 102, the driving gear 104, the driven gear 105, the cam 106 and the roller 107, the transmission rigidity is good, the transmission torque is large, the application range is wide, and it is suitable for various medium and heavy load conditions.

[0053] The driving motor 103 provides power, and transmits the power to the reducer 102 through the output shaft, and transmits the power to the driving gear 104 through the reducer 102, thereby driving the driving gear 104 to rotate; further driving the driven gear 105 meshing with the driving gear 104 to rotate, and further transmitting the power to the cam 106 through the driven gear 105; the rotation of the cam 106 drives the roller 107 meshing with the cam 106 to rotate, and drives the transmission shaft 108 to rotate through the roller 107, so that the spindle box 200 can be rotated along the axis of the transmission shaft 108, and the vertical and horizontal postures of the spindle box 200 can be converted; the CNC machine tool has two processing modes, vertical and horizontal, which effectively improves the processing efficiency and processing accuracy.

[0054] By moving the transmission shaft 108 axially outward in a direction away from the mounting surface 120 to increase the space between the spindle housing 200 and the mounting surface 120, the drive motor 103 can be set in the space between the swing head housing mounting surface 120 and the transmission shaft 108, which can effectively reduce the overall volume of the vertical-horizontal conversion swing head, thereby reducing the occupied area of ​​the CNC machine tool and avoiding interference between the swing head and the machine tool during the swing head movement. On the premise of ensuring the stroke of the electric spindle 210, the transmission shaft 108 is set in the direction close to the mounting surface 120 along the axis to improve the stability of the movement of the spindle housing 200.

[0055] In one embodiment, the axis of the transmission shaft 108 and the extension line of the mounting surface 120 form a first angle, and the angle of the first angle is 45 degrees.

[0056] In this embodiment, the transmission shaft 108 is tilted relative to the mounting surface 120, and the axis of the transmission shaft 108 forms an angle of 45 degrees with the extension line of the mounting surface 120, so that a triangular area is formed between the transmission shaft 108 and the mounting surface, thereby increasing the contact area between the spindle box 200 and the swing head box 100, and the center of gravity of the vertical-horizontal conversion swing head is close to the mounting surface 120, which effectively improves the accuracy of the vertical-horizontal conversion swing head and enhances the overall rigidity of the vertical-horizontal conversion swing head; it also helps the vertical-horizontal conversion swing head to achieve a more flexible layout in a limited space, making the structure of the vertical-horizontal conversion swing head more compact; when the vertical-horizontal conversion swing head rotates, the vertical-horizontal conversion swing head can also be rotated in a smaller space, which can further reduce the occupied space of the CNC machine tool and improve space utilization.

[0057] In one embodiment, a plane formed by the axis of the drive motor 103 and the axis of the cam 106 has a second angle with the horizontal plane.

[0058] In this embodiment, by setting a second angle between the plane formed by connecting the axis of the drive motor 103 and the axis of the cam 106 and the horizontal plane, it is helpful to reduce the impact of the roller 107 on the cam 106 during transmission, enhance the stability of the transmission, reduce the impact, and make the cam 106 and the roller 107 run smoothly.

[0059] In one embodiment, the second angle is 5 degrees to 15 degrees. The specific angle of the second angle formed by the axis of the drive motor 103 and the axis of the cam 106 can be 5 degrees, 10 degrees, 15 degrees, etc. The specific angle can be set according to the actual use and is not specifically limited. In other embodiments, the second angle can also be 20 degrees, 25 degrees, 30 degrees, etc.

[0060] In one embodiment, if Figure 4 , Figure 5 As shown, the drive motor 103 is a water-cooled drive motor; an annular groove is provided on one side of the connecting plate 101; a sealing plate 130 is also provided in the swing head box 100, and the sealing plate 130 is fixedly connected to the side of the connecting plate 101 where the annular groove is provided, so as to enclose the annular groove to form a closed water-cooling channel 1015.

[0061] In this embodiment, by setting the drive motor 103 as a water-cooled drive motor, the heat generated by the drive motor 103 can be dissipated more efficiently, and can better cope with high-power and long-term operating conditions; the sealing plate 130 is welded to the side of the connecting plate 101 where the annular groove is provided, so that the sealing plate 130 and the annular groove of the connecting plate 101 are enclosed to form a closed water-cooling channel 1015, for the cooling medium to flow in the water-cooling channel 1015, which can effectively absorb the heat generated by the drive motor 103, the reducer 102, etc. during operation, effectively reduce the temperature inside the swing head box 100, avoid the influence of the heat generated by the drive motor 103 and the reducer 102 on the swing head accuracy, and ensure the normal operation and stable performance of the vertical and horizontal conversion swing head.

[0062] In one embodiment, a water cooling inlet 1011 and a water cooling outlet 1012 are provided on one side of the water cooling channel 1015; a water baffle 1013 is provided in the water cooling channel 1015, and the water baffle 1013 is separated from the water cooling inlet 1011 and the water cooling outlet 1012; the water baffle 1013 is used to form a cooling path in the water cooling channel 1015 where the cooling medium enters from the water cooling inlet 1011, surrounds the water cooling channel 1015, and then flows out from the water cooling outlet 1012.

[0063] In this embodiment, the water cooling inlet 1011 and the water cooling outlet 1012 are arranged in the annular groove of the connecting plate 101, and the water cooling inlet 1011 and the water cooling outlet 1012 are respectively connected to the water cooling pipeline in the swing head box 100, so that the cooling medium flows into the water cooling channel 1015 from the water cooling inlet 1011, and then flows out from the water cooling outlet 1012 to dissipate heat for the drive motor 103 and the reducer 102.

[0064] The annular groove is divided by the water-cooling inlet 1011 and the water-cooling outlet 1012 to form a first arc segment located between the two and a second arc segment located outside the two, and the first arc segment is much shorter than the second arc segment; the water baffle 1013 is arranged in the annular groove and in the first arc segment, and is arranged close to the water-cooling inlet 1011 and the water-cooling outlet 1012; the height of the water baffle 1013 is consistent with the depth of the annular groove; after the cooling medium flows into the water-cooling channel 1015 from the water-cooling inlet 1011, it can go around the water-cooling channel 1015 for one circle and then flow out from the water-cooling outlet 1012, thereby avoiding the cooling medium from directly flowing into the water-cooling outlet 1012 from the water-cooling inlet 1011, and improving the heat dissipation efficiency inside the swing head box 100.

[0065] In one embodiment, a plurality of flow-slowing bosses 1014 are arranged at intervals along the circumferential direction in the water-cooling channel 1015 , and the height of the plurality of flow-slowing bosses 1014 is less than the depth of the annular groove.

[0066] In this embodiment, the slow-flow boss 1014 is arranged in the annular groove and is arranged at circumferential intervals in the water-cooling channel 1015. The height of the slow-flow boss 1014 is less than the depth of the annular groove, which can reduce the flow speed of the cooling medium in the water-cooling channel 1015, so that the cooling medium can fully absorb the heat in the swing head box 100 to better dissipate the heat inside the swing head box 100.

[0067] The slow-flow boss 1014 can also serve as a connection portion; a bolt hole matching the bolt is provided on the side of the slow-flow boss 1014 away from the sealing plate 130 , and when the connecting plate 101 and the reducer 102 are fixedly connected by bolts, the bolt can be fixed in the bolt hole on the slow-flow boss 1014 .

[0068] Specifically, the cooling medium includes but is not limited to cooling water, and the slow-flow boss 1014 is fixedly arranged in the annular groove, and the slow-flow boss 1014 is lower than the edge of the annular groove, which can not only play a role in slowing down the water flow speed to a certain extent, but also ensure that the water flow can flow over the slow-flow boss 1014 and flow in the preset cooling path in the water cooling channel 1015. A plurality of slow-flow bosses 1014 are arranged at intervals in the second arc section of the annular groove.

[0069] In one embodiment, if Figure 2 As shown, a locking device 110 is also provided in the swing head box 100, and the locking device 110 includes a cylinder 111, a piston 112, a pressure plate 113, a first brake pad 114, a second brake pad 115, a first gasket 116, a second gasket 117 and an elastic member; the first brake pad 114 is fixed on the transmission shaft 108, and the second brake pad 115 is fixed on the swing head box 100; the first gasket 116 is arranged between the second brake pad 115 and the swing head box 100, and the second gasket 117 is arranged between the pressure plate 113 and the first brake pad 114; the elastic member is arranged between the cylinder 111 and the piston 112.

[0070] In this embodiment, the elastic member can be a spring; when no hydraulic oil is passed into the locking device 110, the elastic member between the cylinder 111 and the piston 112 will push the piston 112 to press the first brake pad 114 and the second brake pad 115 to achieve the locking function; in an emergency, such as when the power or oil is cut off, it is ensured that the vertical-horizontal conversion swing head has a self-locking ability to prevent the vertical-horizontal conversion swing head from suddenly falling, thereby protecting the vertical-horizontal conversion swing head. When the hydraulic oil pushes the piston 112 to press the first brake pad 114 and the second brake pad 115, the locking force of the vertical-horizontal conversion swing head is increased to ensure that the vertical-horizontal conversion swing head is suitable for medium and heavy cutting conditions. When there is no need for the piston 112 to press the brake pad, hydraulic oil will be passed between the piston 112 and the pressure plate 113, and the piston 112 will be pushed in the opposite direction to separate the first brake pad 114 and the second brake pad 115 from each other. By arranging the first gasket 116 between the second brake pad 115 and the swing head box 100, and arranging the second gasket 117 between the pressure plate 113 and the first brake pad 114, the brake pad can be prevented from directly contacting the swing head box 100 and the pressure plate 113, which can help disperse the pressure on the brake pad and make it more evenly distributed on the swing head box 100 or the pressure plate 113, thereby reducing the situation of excessive local pressure; further, it can prevent the brake pad from directly rubbing against the swing head box 100 or the pressure plate 113, thereby avoiding scratches or damage to the components in the swing head box 100.

[0071] In one embodiment, an annular groove for introducing hydraulic oil is provided on the outer circumference of the piston 112 .

[0072] In this embodiment, an annular groove for introducing hydraulic oil is provided on the outer periphery of the piston 112, so that the piston 112 can evenly press the brake pad; and the annular groove can store a certain amount of hydraulic oil, which can play a buffering role during the movement of the piston 112, reduce impact and vibration, make the movement of the piston 112 more stable, and enhance the locking force.

[0073] In one embodiment, if Figure 6 As shown, an electric spindle 210 is arranged in the spindle housing 200, and a protective cover 220 is arranged on the terminal cover of the electric spindle 210; a hole 230 for allowing the electric spindle cables and pipelines to pass through is provided on the spindle housing 200, and the hole 230 and the electric spindle cables and pipelines are sealed by a sealing structure.

[0074] In this embodiment, by providing a shield 220 at the terminal of the electric spindle 210, collision of external objects, intrusion of dust or impurities can be prevented, thereby reducing interference and damage to the operation of the electric spindle 210. The hole 230 on the spindle housing 200 enables the cables (such as power lines, signal lines, etc.) and pipelines (such as coolant pipes, lubricating oil pipes, etc.) required by the electric spindle 210 to be connected to the external control system and supply source. The hole 230 and the electric spindle cables and pipelines can be sealed by rubber sealing rings, silicone sealing rings, etc.; sealing materials such as sealants can also be used for sealing. Sealing by a sealing structure can prevent external dust, water vapor and other impurities from entering the spindle housing 200 through the hole 230, affecting the normal operation of the electric spindle 210; at the same time, it also prevents the coolant, lubricating oil, etc. in the spindle housing 200 from leaking out, which can keep the inside of the spindle housing 200 clean and the working environment stable, which helps to improve the reliability and service life of the electric spindle 210.

[0075] According to an embodiment of the present invention, on the other hand, a CNC machine tool is provided, comprising: the vertical-horizontal conversion swing head mentioned above, the vertical-horizontal conversion swing head being connected to the CNC machine tool via the mounting surface 120 of the swing head box 100 .

[0076] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A vertical and horizontal conversion swing head, characterized in that: include: Swing head housing (100) and spindle housing (200); The swing head box (100) has a mounting surface (120); The swing head housing (100) is provided with a connecting plate (101), a reducer (102), a driving motor (103), a driving gear (104), a driven gear (105), a cam (106), a roller (107), a transmission shaft (108) and a turntable bearing (109); The connecting plate (101) is fixedly connected to the swing head box (100), and the reducer (102) is mounted on the connecting plate (101); The drive motor (103) is arranged in a region formed between the transmission shaft (108) and the mounting surface (120), and an output shaft of the drive motor (103) is in transmission connection with the reducer (102); The end of the reducer (102) away from the drive motor (103) is connected to the driving gear (104), the driving gear (104) is meshed with the driven gear (105), the driven gear (105) is arranged at one end of the cam (106), the cam (106) is meshed with the roller (107), and the roller (107) is transmission-connected to the transmission shaft (108); The transmission shaft (108) is fixedly connected to the spindle housing (200) via the turntable bearing (109); when the transmission shaft (108) rotates, the spindle housing (200) is driven to rotate; The drive motor (103) is a water-cooled drive motor; an annular groove is provided on one side of the connecting plate (101); A sealing plate (130) is also provided in the swing head box (100), and the sealing plate (130) is fixedly connected to a side of the connecting plate (101) where the annular groove is provided, so as to enclose the annular groove to form a closed water cooling channel (1015); A water cooling inlet (1011) and a water cooling outlet (1012) are provided on one side of the water cooling channel (1015); A water baffle (1013) is provided in the water cooling channel (1015), and the water baffle (1013) is arranged between the water cooling inlet (1011) and the water cooling outlet (1012); The water baffle (1013) is used to allow the cooling medium to form a cooling path in the water cooling channel (1015), where the cooling medium enters from the water cooling inlet (1011), circles around the water cooling channel (1015), and then flows out from the water cooling outlet (1012); A plurality of slow-flow bosses (1014) are also provided at intervals along the circumferential direction in the water-cooling channel (1015), and the height of the slow-flow bosses (1014) is less than the depth of the annular groove; A locking device (110) is also provided in the swing head box (100), and the locking device (110) comprises a cylinder (111), a piston (112), a pressure plate (113), a first brake pad (114), a second brake pad (115), a first gasket (116), a second gasket (117) and an elastic member; The first brake pad (114) is fixed on the transmission shaft (108), and the second brake pad (115) is fixed on the swing head box (100); The first gasket (116) is arranged between the second brake pad (115) and the swing head box (100), and the second gasket (117) is arranged between the pressure plate (113) and the first brake pad (114); The elastic member is arranged between the cylinder body (111) and the piston (112).

2. The vertical-horizontal conversion swing head according to claim 1, characterized in that: The axis of the transmission shaft (108) and the extension line of the mounting surface (120) form a first angle, and the angle of the first angle is 45 degrees.

3. The vertical-horizontal conversion swing head according to claim 1, characterized in that: A second angle exists between a plane formed by the axis of the drive motor (103) and the axis of the cam (106) and a horizontal plane.

4. The vertical-horizontal conversion swing head according to claim 3 is characterized in that: The second angle is between 5 and 15 degrees.

5. The vertical-horizontal conversion swing head according to claim 1, characterized in that: The outer circumference of the piston (112) is provided with an annular groove for introducing hydraulic oil.

6. The vertical-horizontal conversion swing head according to any one of claims 1 to 4, characterized in that: An electric spindle (210) is arranged in the spindle housing (200), and a terminal cover of the electric spindle (210) is provided with a protective cover (220); The spindle housing (200) is provided with a hole (230) for allowing the electric spindle cable and pipeline to pass through, and the hole (230) and the electric spindle cable and pipeline are sealed by a sealing structure.

7. A CNC machine tool, characterized in that: include: The vertical-horizontal conversion swing head according to any one of claims 1 to 6, wherein the vertical-horizontal conversion swing head is connected to a CNC machine tool via a mounting surface (120) of the swing head box (100).

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