Rotary table device and turning and milling combined machining center

Abstract

The invention relates to the technical field of parts, components or accessories of machine tools, and discloses a rotating table device and a turning and milling combined machining center, the rotating table device comprises a base, a support, a table, a driving assembly, a center tensioning mechanism and a brake assembly, and the center tensioning mechanism comprises a locking sleeve, a wedge block, a first elastic piece, a clamping tongue and a tensioning piston. When the rotary workbench device works and the workbench is connected with the support, the tensioning piston can be driven to move in the direction close to the workbench, then the piston can drive the wedge block, the first elastic piece and the clamping tongue to move, the clamping tongue can stretch into the locking sleeve, and under the elastic effect of the first elastic piece, the clamping tongue can be locked in the locking sleeve. The first elastic piece enables the clamping tongue to abut against the inner wall of the locking sleeve, center locking can be conducted on the workbench through the clamping tongue, connection between the workbench and the support can be tighter, fixing of the workbench is more reliable, and the machining quality can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool parts, components or accessories, and in particular to a rotary table device and a turning-milling compound machining center. Background Art

[0002] Since casing parts in the aerospace field are complex rotating parts with curved surfaces, planes, inclined planes, and a large number of eccentric holes, inclined holes, and center holes on their surfaces, casing parts not only require high dimensional accuracy, but also have high shape and position accuracy requirements between related features. At present, vertical turning and milling composite machining centers are mainly used to process casing parts. Vertical turning and milling composite machining centers are mainly used for turning, and can complete all turning, milling, boring, drilling, tapping and other processes of casing parts in one clamping.

[0003] The rotary table is the core component of the vertical turning and milling machining center. The rotary table in traditional technology has weak locking ability on the worktable, which affects the machining efficiency, especially the turning and milling machining center, resulting in low machining efficiency and high failure rate. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides a rotary table device.

[0006] A second aspect of the present invention provides a turning-milling combined machining center.

[0007] In view of this, according to a first aspect of the present invention, a rotary table device is provided, comprising: A base, a support, a workbench and a driving assembly, wherein the workbench is detachably connected to the support, the driving assembly is arranged in the base, the output end of the driving assembly is connected to the support, and the driving assembly is used to drive the workbench and the support to rotate; a central tensioning mechanism, the central tensioning mechanism being arranged on the support and being used for locking the workbench when the workbench is connected to the support; a brake assembly, the brake assembly being used to apply damping to the support; Wherein, the central tensioning mechanism includes: a locking sleeve, a wedge block, a first elastic member, a tongue and a tensioning piston, the locking sleeve is connected to the middle part of the workbench, the locking sleeve is away from the end surface of the workbench to form a limiting portion, the wedge block is connected to the tensioning piston, and the tongue is connected to the wedge block through the first elastic member, when the tensioning piston moves in the direction close to the workbench, the tongue is clamped in the locking sleeve through the limiting portion to lock the workbench, and when the tensioning piston moves in the direction away from the workbench, the tongue compresses the first elastic member, the tongue is disengaged from the locking sleeve, and the workbench is unlocked.

[0008] In a feasible implementation manner, the central tensioning mechanism further includes: A tensioning body, the tensioning body being arranged in the middle of the support, and at least part of the tensioning piston being arranged in the tensioning body; A guide post connected to the tensioning body; a second elastic member, the second elastic member being sleeved on the guide column, the second elastic member being in contact with the tensioning piston, and being used for driving the tensioning piston to move toward the direction close to the workbench to lock the workbench when the tensioning piston loses external force; A pressure cover is connected to the tensioning body and is used to seal the tensioning piston and the wedge block.

[0009] In a feasible implementation manner, the central tensioning mechanism further includes: A connecting pin, a pin hole is formed on the wedge block, the space of the pin hole is larger than the diameter of the connecting pin, and the tongue is connected to the connecting pin so that there is freedom between the tongue and the connecting pin.

[0010] In a feasible implementation manner, a detection switch assembly is further included, and the detection switch assembly is used to obtain the locking state of the central tensioning mechanism, and the detection switch assembly includes: A detection rod, one end of which is connected to the tensioning piston, and the other end of which extends into the base; A motion tension detection switch, wherein the motion tension detection switch is arranged on the detection rod and moves with the detection rod; A fixed tension detection switch is arranged in the base.

[0011] In a feasible implementation manner, the brake assembly includes: a brake disc, the brake disc being connected to the support; A brake seat, wherein a first friction plate is arranged on the brake seat; An intermediate plate, the intermediate plate being arranged on the brake seat; A brake upper plate, the brake upper plate is connected to the middle plate, a second friction plate is formed on the brake upper plate, a gap is formed between the first friction plate and the second friction plate, and the brake disc is used to be arranged in the gap; a first piston, the first piston being disposed in the brake seat and used for pushing the first friction plate to move; A second piston, the second piston is arranged in the brake upper plate and is used to push the second friction plate to move; A third elastic member is disposed in the middle plate and is used for driving the first friction plate, the second friction plate, the first piston and the second piston to reset.

[0012] In a feasible implementation manner, the rotary table device further includes: an oil circuit control unit, the oil circuit control unit is used to control the opening and closing of the hydraulic oil circuit of the rotary table device, and the oil circuit control unit includes: A lower body of the oil cylinder, wherein the lower body of the oil cylinder is connected to the base; An oil cylinder upper body, the oil cylinder upper body being connected to the oil cylinder lower body; An oil circuit control piston, the oil circuit control piston is arranged in the oil cylinder lower body and the oil cylinder upper body to form a hydraulic oil cylinder; an oil supply pipeline, the oil supply pipeline being arranged on the support and being used at least to supply hydraulic oil to the tensioning piston; A male plug, the male plug being arranged on the oil circuit control piston; A female plug, the female plug is connected to the support and is connected to the oil supply pipeline. When the oil circuit control piston moves in a direction close to the support, the male plug is plugged into the female plug; A guide pin and a guide groove, wherein the guide groove is arranged on the support, and the guide pin is connected to the oil circuit control piston.

[0013] In a feasible implementation manner, the rotary table device further includes: an oil circuit detection switch, wherein the oil circuit detection switch includes: A detection plate, the detection plate is connected to the oil circuit control piston; A detection member is connected to the lower body of the oil cylinder.

[0014] In a feasible implementation manner, the driving assembly includes: A torque motor and a cross tapered roller bearing, wherein the stator of the torque motor is connected to the base via a stator connecting plate, and the rotor of the torque motor is connected to the support via a bearing outer ring seat of the cross tapered roller bearing; A fixing sleeve, wherein the fixing sleeve is arranged in the base; The encoder and the connecting plate, part of the encoder is connected to the base through a fixing sleeve, and part of the encoder is connected to the support through a connecting plate.

[0015] In a feasible implementation manner, the rotary table device further includes: a quick-insertion unit, which is used for positioning the table and the support, and the quick-insertion unit includes: A guide pin and a guide sleeve, wherein the guide sleeve is arranged on the workbench, and the guide pin is arranged on the support; The positioning assembly comprises a positioning seat, a positioning head and a locking member, wherein the positioning seat is arranged on the workbench, the positioning head is arranged on the support, the locking member is arranged on the positioning head, and the locking member is used to lock the positioning seat.

[0016] According to a second aspect of the present invention, a turning-milling compound machining center is provided, comprising: The rotary table device as described in any of the above technical solutions; A turning and milling machine tool, wherein the rotary table device is arranged on the turning and milling machine tool.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: The rotary table device provided by the present invention includes a base, a support, a worktable, a driving assembly, a central tensioning mechanism and a brake assembly. Based on this, when the rotary table device is working, the device to be processed can be carried on the worktable, and the worktable and the support are detachably connected, that is, a support can be equipped with a worktable loaded with different devices, and a worktable can also be connected to different supports. Based on this, continuous processing of devices can be achieved, which can improve processing efficiency. Through the setting of the driving assembly, the base provides an installation position for the driving assembly, and the driving assembly can drive the support and the worktable to rotate, which is convenient for processing of devices. Furthermore, the central tensioning mechanism includes a locking sleeve, a wedge block, a first elastic member, a latch and a tensioning piston. When the rotary table device is working and the table is connected to the support, the tensioning piston can be driven to move in a direction close to the table, and then the piston will drive the wedge block, the first elastic member and the latch to move. The latch can be inserted into the locking sleeve. Under the elastic action of the first elastic member, the first elastic member will cause the latch to abut against the inner wall of the locking sleeve. The table can be centrally locked through the latch, which can make the connection between the table and the support tighter and make the fixation of the table more reliable. In particular, the tensioning effect of the central tensioning mechanism can ensure stability and safety even when the table rotates at high speed, and can ensure the processing quality. When the workbench is separated from the support, by controlling the tensioning piston to move away from the workbench, as the latch tongue abuts against the limiting portion of the locking sleeve, the latch tongue will compress the first elastic member, and the latch tongue will be released through the locking sleeve, and the central tensioning mechanism will unlock the workbench and the support, and the workbench can move to the next operation stage, thereby ensuring processing efficiency. The rotary workbench device provided by the present invention can apply damping to the support to achieve fixed-angle locking of the C-axis of the workbench and C-axis linkage damping cutting through the setting of the brake assembly, which can meet different processing requirements of the product and further improve the processing accuracy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 A schematic structural diagram of a rotary table device at a first angle according to an embodiment of the present application; Figure 2 A schematic structural diagram of a rotary table device according to a second embodiment of the present application; Figure 3 A schematic structural diagram of a brake assembly of a rotary table device according to an embodiment of the present application.

[0019] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows: 110 base, 120 support, 130 workbench, 140 drive assembly, 150 center tensioning mechanism, 160 brake assembly, 170 detection switch assembly, 180 oil circuit control unit, 190 oil circuit detection switch, 200 quick-insert unit; 141 torque motor, 142 cross tapered roller bearing, 143 fixed sleeve, 144 encoder, 145 connecting plate; 1411 stator, 1412 stator connecting plate, 1413 rotor, 1421 bearing outer ring seat, 1422 bearing upper pressure cover, 1423 bearing grinding pad; 151 locking sleeve, 152 wedge block, 153 first elastic member, 154 latching tongue, 155 tensioning piston, 156 tensioning body, 157 guide column, 158 second elastic member, 159 gland, 1510 connecting pin; 161 brake disc, 162 brake seat, 163 first friction plate, 164 middle plate, 165 brake upper plate, 166 second friction plate, 167 first piston, 168 second piston, 169 third elastic member, 1610 brake cover plate; 171 detection rod, 172 motion tension detection switch, 173 fixed tension detection switch; 181 oil cylinder lower body, 182 oil cylinder upper body, 183 oil circuit control piston, 184 oil supply pipeline, 185 male plug, 186 female plug, 187 guide pin, 188 guide groove; 191 test board, 192 test piece; 210 guide pin, 220 guide sleeve, 230 positioning assembly, 2310 positioning seat, 2320 positioning head, 2330 locking piece. DETAILED DESCRIPTION

[0020] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0021] like Figures 1 to 3As shown, according to the first aspect of the present invention, a rotary table device is proposed, comprising: a base 110, a support 120, a worktable 130 and a driving assembly 140, wherein the worktable 130 is detachably connected to the support 120, the driving assembly 140 is arranged in the base 110, the output end of the driving assembly 140 is connected to the support 120, and the driving assembly 140 is used to drive the worktable 130 and the support 120 to rotate; a central tensioning mechanism 150, the central tensioning mechanism 150 is arranged on the support 120, and is used to lock the worktable 130 when the worktable 130 is connected to the support 120; a brake assembly 160, and the brake assembly 160 is used to apply damping to the support 120; wherein the central tensioning mechanism 150 comprises: a locking mechanism Sleeve 151, wedge block 152, first elastic member 153, latch 154 and tensioning piston 155, the locking sleeve 151 is connected to the middle part of the workbench 130, the end surface of the locking sleeve 151 away from the workbench 130 forms a limiting portion, the wedge block 152 is connected to the tensioning piston 155, the latch 154 is connected to the wedge block 152 through the first elastic member 153, when the tensioning piston 155 moves in the direction close to the workbench 130, the latch 154 is clamped in the locking sleeve 151 through the limiting portion to lock the workbench 130, when the tensioning piston 155 moves in the direction away from the workbench 130, the latch 154 compresses the first elastic member 153, the latch 154 is separated from the locking sleeve 151, and the workbench 130 is unlocked.

[0022] The rotary table device provided by the present invention includes a base 110, a support 120, a workbench 130, a drive assembly 140, a central tensioning mechanism 150 and a brake assembly 160. Based on this, when the rotary table device is working, the device to be processed can be carried by the workbench 130, and the workbench 130 and the support 120 are detachably connected, that is, a support 120 can be equipped with a workbench 130 loaded with different devices, and a workbench 130 can also be connected to different supports 120. Based on this, continuous processing of devices can be achieved, which can improve processing efficiency. Through the setting of the drive assembly 140, the base 110 provides an installation position for the drive assembly 140, and the drive assembly 140 can drive the support 120 and the workbench 130 to rotate, which is convenient for the processing of devices.

[0023] The central tensioning mechanism 150 of the rotary table device provided by the present invention includes a locking sleeve 151, a wedge block 152, a first elastic member 153, a latch tongue 154 and a tensioning piston 155. When the rotary table device is working, when the table 130 is connected to the support 120, the tensioning piston 155 can be driven to move toward the direction close to the table 130, and then the piston will drive the wedge block 152, the first elastic member 153 and the latch tongue 154 to move, and the latch tongue 154 can extend into the locking sleeve 151. 51, under the elastic action of the first elastic member 153, the first elastic member 153 makes the tongue 154 abut against the inner wall of the locking sleeve 151, and the workbench 130 can be centrally locked through the tongue 154, which can make the connection between the workbench 130 and the support 120 tighter, making the fixation of the workbench 130 more reliable, especially through the tightening effect of the central tightening mechanism 150, even if the workbench 130 rotates at a high speed, it can ensure stability and safety, and can ensure the processing quality. When the workbench 130 is separated from the support 120, by controlling the tightening piston 155 to move away from the workbench 130, as the tongue 154 abuts against the limiting part of the locking sleeve 151, the tongue 154 will compress the first elastic member 153, and the tongue 154 will be released through the locking sleeve 151, and the central tightening mechanism 150 will unlock the workbench 130 and the support 120, and the workbench 130 can move to the next operation stage, ensuring the processing efficiency.

[0024] The rotary table device provided by the present invention can apply damping to the support 120 through the setting of the brake assembly 160 to achieve fixed angle locking of the C-axis of the worktable 130 and C-axis linked damping cutting, which can meet different processing requirements of the product and further improve the product processing accuracy.

[0025] It can be understood that the rotary worktable device provided by the present invention can connect the worktable 130 to different supports 120 through the arrangement of the center tensioning mechanism 150, the support 120 and the worktable 130. Based on this, a plurality of supports 120 can be arranged in the turning-milling compound machining center. Each support 120 corresponds to a different machining process, thereby realizing continuous operation of the product. Through the arrangement of the center tensioning mechanism 150, the reliability of the connection between the worktable 130 and the support 120 can be guaranteed, the safety of the high-speed rotation of the worktable 130 can be guaranteed, and the high-precision and high-efficiency machining requirements can be further met.

[0026] In some examples, the first elastic member 153 may include a disc spring.

[0027] like Figures 1 to 3As shown, in a feasible embodiment, the central tensioning mechanism 150 also includes: a tensioning body 156, the tensioning body 156 is arranged in the middle of the support 120, and at least part of the tensioning piston 155 is used to be set in the tensioning body 156; a guide column 157, the guide column 157 is connected to the tensioning body 156; a second elastic member 158, the second elastic member 158 is sleeved on the guide column 157, the second elastic member 158 abuts against the tensioning piston 155, and is used to drive the tensioning piston 155 to move in a direction close to the workbench 130 when the tensioning piston 155 loses external force, thereby locking the workbench 130; a pressure cover 159, the pressure cover 159 is connected to the tensioning body 156, and is used to close the tensioning piston 155 and the wedge block 152.

[0028] In this technical solution, it is further considered that when the workbench 130 rotates at a high speed, the oil supply ring in the traditional technology may not be able to meet the oil supply demand, which may affect the control accuracy. Based on this, the structural composition of the central tensioning mechanism 150 is further provided. The central tensioning mechanism 150 may include a tensioning body 156, a guide column 157, a second elastic member 158 and a pressure cover 159. Based on this, the central tensioning mechanism 150 has two operating modes. The first is that when the device on the workbench 130 is processed and the product needs to be transferred, the workbench 130 stops rotating and the workbench 130 is unlocked from the support 120. In this case, it is convenient to supply hydraulic oil to the tensioning piston 155, so the tensioning can be tightened through the oil circuit. The piston 155 supplies hydraulic oil to drive the piston to move away from the workbench 130. The piston overcomes the assistance of the second elastic member 158, so that the latching tongue 154 is separated from the locking sleeve 151, and the workbench 130 is unlocked. When the workbench 130 is connected to the support 120 with the device and the workbench 130 rotates, it is not convenient to supply hydraulic oil to the tensioning piston 155. In this case, the second elastic member 158 will restore its deformation and drive the tensioning piston 155 to reset under the guidance of the guide column 157, so that the latching tongue 154 is clamped in the locking sleeve through the limit part. Based on this, during the rotation of the workbench 130, it can be ensured that the workbench 130 is always in a locked state with the support 120. That is to say, when the workbench 130 is separated from the support 120, it can be unlocked by hydraulic oil, and when the workbench 130 is locked or maintained in a locked state, it can be locked by the mechanical structural characteristics of the second elastic member 158 and the guide column 157, thereby ensuring the stability of the operation.

[0029] In this technical solution, the central tensioning mechanism 150 may also include a tensioning body 156 and a pressure cover 159. The setting of the tensioning body 156 provides an installation position for the tensioning piston 155, which facilitates the central tensioning mechanism 150 to be located in the middle of the entire device. The workbench 130 can be locked from the middle to the surrounding areas, thereby ensuring the locking strength and facilitating the assembly of the rotary workbench device. The central tensioning mechanism 150 can be closed by the setting of the pressure cover 159, further ensuring the reliability of the operation.

[0030] In some examples, the second elastic member 158 may include a rectangular spring.

[0031] like Figures 1 to 3 As shown, in a feasible embodiment, the central tensioning mechanism 150 also includes: a connecting pin 1510, a pin hole is formed on the wedge block 152, the space of the pin hole is larger than the diameter of the connecting pin 1510, and the tongue 154 is connected to the connecting pin 1510 so that there is freedom between the tongue 154 and the connecting pin 1510.

[0032] In this technical solution, a connection method between the tongue 154 and the wedge block 152 is further provided. The connection between the tongue 154 and the wedge block 152 is achieved by cooperating with the connecting pin 1510 and the pin hole. The movable distance between the tongue 154 and the wedge block 152 can be reasonably controlled, which facilitates the unlocking and locking of the workbench 130 while avoiding a large range of movement of the tongue 154, thereby ensuring the overall precision of the device.

[0033] In a feasible embodiment, it also includes a detection switch assembly 170, which is used to obtain the locking state of the central tensioning mechanism 150. The detection switch assembly 170 includes: a detection rod 171, one end of the detection rod 171 is connected to the tensioning piston 155, and the other end extends into the base 110; a motion tensioning detection switch 172, the motion tensioning detection switch 172 is set on the detection rod 171 and moves with the detection rod 171; a fixed tensioning detection switch 173, and the fixed tensioning detection switch 173 is set in the base 110.

[0034] In this technical solution, considering that if the locking of the center tensioning mechanism 150 is abnormal, it may cause a serious accident, the rotary worktable device may also include a detection switch assembly 170. The detection switch assembly 170 monitors the state of the center tensioning mechanism 150 to ensure that the center tensioning mechanism 150 can lock the worktable 130 when the worktable 130 is rotating. If the center tensioning mechanism 150 is in an unlocked state, the drive component can be controlled to be in a state where it cannot be started, which further ensures the safety of the operation of the rotary worktable device.

[0035] In this technical solution, the structural composition of the detection switch assembly 170 is also provided. The detection switch assembly 170 may include a detection rod 171, a motion tension detection switch 172 and a fixed tension detection switch 173. The arrangement of the detection rod 171 facilitates the placement of the motion tension detection switch 172. The detection rod 171 extends into the base 110, and the space of the base 110 can be fully utilized. The function of the base 110 is to fix the drive assembly 140. There may be a large space in the base 110. Therefore, the detection rod 171 can be used to arrange the motion tension detection switch 172 and the fixed tension detection switch 173 in the base 110. During the operation of the central tensioning mechanism 150, the position of the tensioning piston 155 determines the working state of the central tensioning mechanism 150 and the locking and unlocking state of the workbench 130, and the detection rod 171 moves with the tensioning piston 155. The motion tensioning detection switch 172 is then connected to the detection rod 171, and the motion tensioning detection switch 172 will move with the detection rod 171. The fixed tensioning detection switch 173 is arranged in the base 110, and the fixed tensioning detection switch 173 is fixed. Based on this, by knowing the positions of the motion tensioning detection switch 172 and the fixed tensioning detection switch 173, the position of the tensioning piston 155 can be known, and the working state of the central tensioning mechanism 150 can be determined, so that the controllability and monitorability of the rotary workbench device are higher.

[0036] like Figures 1 to 3 As shown, in a feasible implementation manner, the brake assembly 160 includes: a brake disc 161, the brake disc 161 is connected to the support 120; a brake seat 162, on which a first friction plate 163 is arranged; an intermediate plate 164, which is arranged on the brake seat 162; a brake upper plate 165, which is connected to the intermediate plate 164, on which a second friction plate 166 is formed, the first friction plate 163 and the second friction plate 166 are formed with a gap, and the brake disc 161 is used to be arranged in the gap; a first piston 167, which is arranged in the brake seat 162 and is used to push the first friction plate 163 to move; a second piston 168, which is arranged in the brake upper plate 165 and is used to push the second friction plate 166 to move; a third elastic member 169, which is arranged in the intermediate plate 164 and is used to drive the first friction plate 163, the second friction plate 166, the first piston 167 and the second piston 168 to reset.

[0037] In the technical solution, the structure of the brake assembly 160 is further provided. The brake assembly 160 may include a brake disc 161, a brake seat 162, an intermediate plate 164, a brake upper plate 165, a first piston 167, a second piston 168 and a third elastic member 169. Based on this, during use, the brake disc 161 is fixedly connected to the support 120, and the other components of the brake assembly 160 are arranged on one side of the support 120. Based on this, when the moving workbench 130 needs to be stopped or damping needs to be applied to the rotation of the workbench 130, the first piston 167 can be used to stop the workbench 130. 167 and / or the second piston 168 extend to drive the first friction plate 163 and the second friction plate 166 to approach each other, thereby achieving the effect of applying damping. The first friction plate 163 and the second friction plate 166 are arranged on both sides of the brake disc 161 to improve the braking effect. The first piston 167 and the second piston 168 drive the deformation of the first friction plate 163 and the second friction plate 166 to ensure the control accuracy of damping application. The middle plate 164 is provided to facilitate the brake seat 162 and the brake upper plate 165 to clamp the brake disc 161. The third elastic member 169 is provided to facilitate the first piston 167 and the second piston 168 to reset by elastic force, making the use of the rotary table device more convenient.

[0038] like Figures 1 to 3 As shown, in a feasible implementation manner, the rotary table device further includes: an oil circuit control unit 180, the oil circuit control unit 180 is used to control the conduction and closing of the hydraulic oil circuit of the rotary table device, and the oil circuit control unit 180 includes: a cylinder lower body 181, the cylinder lower body 181 is connected to the base 110; a cylinder upper body 182, the cylinder upper body 182 is connected to the cylinder lower body 181; an oil circuit control piston 183, the oil circuit control piston 183 is arranged in the cylinder lower body 181 and the cylinder upper body 182 to form a hydraulic cylinder; an oil supply pipeline 184, an oil supply pipeline 184 is arranged on the support 120 and is at least used to supply hydraulic oil to the tensioning piston 155; the male plug 185, the male plug 185 is arranged on the oil circuit control piston 183; the female plug 186, the female plug 186 is connected to the support 120 and is conducted to the oil supply pipeline 184. When the oil circuit control piston 183 moves in the direction close to the support 120, the male plug 185 is inserted into the female plug 186; the guide pin 187 and the guide groove 188, the guide groove 188 is opened on the support 120, and the guide pin 187 is connected to the oil circuit control piston 183.

[0039] In this technical solution, considering that the workbench 130 and the support 120 need to rotate relative to the base 110, the central tensioning mechanism 150 can ensure the reliability of the high-speed rotation of the workbench 130. However, the oil supply ring in the traditional technology may not be able to supply hydraulic oil to the high-speed rotating workbench 130. Based on this, the rotary workbench device provided by the present invention also designs the oil circuit. Specifically, the oil circuit control unit 180 includes a cylinder lower body 181, a cylinder upper body 182, an oil circuit control piston 183, an oil supply pipeline 184, and a male plug. 185, female plug 186, guide pin 187 and guide groove 188. Based on this, when it is necessary to supply hydraulic oil to the components on the workbench 130, the oil circuit control piston 183 can be moved toward the workbench 130, based on which the male plug 185 can be driven to connect with the female plug 186 on the support 120, and the hydraulic oil can be supplied through the oil supply pipeline 184. In this process, the guide pin 187 and the guide groove 188 can play a guiding role, so that the male plug 185 and the female plug 186 can be accurately connected. When the workbench 130 rotates and there is no need to supply hydraulic oil, the oil circuit control piston 183 can be controlled to move away from the workbench 130, so that the male plug 185 is separated from the male plug 185, and the hydraulic oil supply of the supply oil circuit is disconnected. Similarly, in this process, the guide pin 187 and the guide groove 188 can play a guiding role, and the male plug 185 and the female plug 186 can have the ability to block the oil circuit, which can prevent the leakage of hydraulic oil.

[0040] It can be understood that the provision of the oil cylinder lower body 181 and the oil cylinder upper body 182 facilitates the formation of the oil cylinder and the assembly of the oil circuit control piston 183.

[0041] like Figures 1 to 3 As shown, in a feasible implementation manner, the rotary table device further includes: an oil circuit detection switch 190, the oil circuit detection switch 190 includes: a detection plate 191, the detection plate 191 is connected to the oil circuit control piston 183; a detection member 192, the detection member 192 is connected to the lower body 181 of the oil cylinder.

[0042] In this technical solution, considering that the position of the oil circuit control piston 183 determines the supply and disconnection of the oil circuit of the support 120 and the worktable 130, if the worktable 130 rotates when the oil circuit is opened, it may cause danger. Based on this, the rotary worktable device can also include an oil circuit detection switch 190. The oil circuit detection switch 190 is used to facilitate the acquisition of the operating status of the oil circuit control piston 183, thereby making the operation of the rotary worktable device safer.

[0043] In this technical solution, an oil circuit detection switch 190 is further provided, which may include a detection plate 191 and a detection member 192. The detection plate 191 is connected to the oil circuit control piston 183 and will move with the oil circuit control piston 183, while the detection member 192 is fixedly connected to the lower body 181 of the cylinder. Based on this, the state of the oil circuit control piston 183 can be determined by knowing the positions of the detection member 192 and the detection plate 191, thereby making the operation of the rotary table device safer.

[0044] In a feasible embodiment, the drive assembly 140 includes: a torque motor 141 and a cross tapered roller bearing 142, the stator 1411 of the torque motor 141 is connected to the base 110 through a stator connecting plate 1412, and the rotor 1413 of the torque motor 141 is connected to the support 120 through a bearing outer ring seat 1421 of the cross tapered roller bearing 142; a fixed sleeve 143, the fixed sleeve 143 is arranged in the base 110; an encoder 144 and a connecting plate 145, part of the encoder 144 is connected to the base 110 through the fixed sleeve 143, and part of the encoder 144 is connected to the support 120 through the connecting plate 145.

[0045] In this technical solution, the structural composition of the driving component 140 is further provided. The driving component 140 may include a torque motor 141 and a cross tapered roller bearing 142. Based on this, by turning on the torque motor 141, the support 120 and the workbench 130 can be driven to rotate, and the rotation angle of the workbench 130 relative to the base 110 can be determined by setting the encoder 144.

[0046] like Figures 1 to 3 As shown, in a feasible embodiment, the rotary workbench device also includes: a quick-insertion unit 200, which is used for positioning the workbench 130 and the support 120, and the quick-insertion unit 200 includes: a guide pin 210 and a guide sleeve 220, the guide sleeve 220 is arranged on the workbench 130, and the guide pin 210 is arranged on the support 120; a positioning assembly 230, the positioning assembly 230 includes a positioning seat 2310, a positioning head 2320 and a locking member 2330, the positioning seat 2310 is arranged on the workbench 130, the positioning head 2320 is arranged on the support 120, the locking member 2330 is arranged on the positioning head 2320, and the locking member 2330 is used to lock the positioning seat 2310.

[0047] In this technical solution, the rotary workbench 130 may further include a quick-insertion unit 200 . The quick-insertion unit 200 facilitates quick connection between the workbench 130 and the support 120 , making positioning and connection between the workbench 130 and the support 120 more convenient.

[0048] In this technical solution, the structural composition of the quick-insertion unit 200 is further provided. The quick-insertion unit 200 may include a guide pin 210 and a guide sleeve 220. The setting of the guide pin 210 and the guide sleeve 220 can guide the connection between the workbench 130 and the support 120, thereby facilitating the docking of the workbench 130 and the support 120.

[0049] In this technical solution, the quick-insertion unit 200 may further include a positioning assembly 230, and the positioning assembly 230 may include a positioning seat 2310, a positioning head 2320 and a locking member 2330. Such an arrangement can guide the connection between the support 120 and the workbench 130 through the positioning seat 2310 and the positioning head 2320, and at the same time, the positioning seat 2310 and the positioning head 2320 can be locked through the locking member 2330, so that the connection between the workbench 130 and the support 120 is more reliable.

[0050] Example like Figures 1 to 3 As shown, according to the first aspect of this embodiment, a rotary worktable device is proposed, and the turning and milling rotary worktable 130 is composed of a base 110, a support 120, a worktable 130, a torque motor 141, a cross tapered roller bearing 142, an encoder 144, an oil circuit control unit 180, a center tensioning mechanism 150, a quick-insertion unit 200, a brake assembly 160, etc., which can realize automatic exchange of the worktable 130. The rotary worktable 130 has a turning spindle function and a C-axis function, and is used for a vertical turning and milling composite machining center.

[0051] The rotation of the workbench 130 is directly driven by the torque motor 141, the cross tapered roller bearing 142 realizes the load bearing and centering of the workbench 130, and the encoder 144 realizes position feedback. The stator 1411 of the torque motor 141 is fixed to the outer cavity of the base 110 through the stator connecting plate 1412, and the rotor 1413 of the torque motor 141 is connected to the support 120 through the bearing outer ring seat 1421; the bearing outer ring gland fixed on the bearing outer ring seat 1421 by screws can apply preload to the bearing; the bearing outer ring gland is fixed on the inner core shaft of the base 110, and the bearing upper gland 1422 is fixed on the inner core shaft of the base 110 by screws, and the bearing is preloaded by the bearing grinding pad 1423; the encoder 144 is connected to the center of the base 110 and the center of the support 120 through the fixing sleeve 143 and the connecting plate 145 respectively.

[0052] The oil circuit control unit 180, the central tensioning mechanism 150 and the quick-insertion unit 200 realize the rapid, reliable and automatic exchange of the workbench 130. The workbench 130 realizes the rapid and automatic exchange positioning with the support 120 through the guide sleeve 220 fixed on the workbench 130 and the guide pin 210 fixed on the support 120; when the workbench 130 rotates, the central tensioning mechanism 150 fixed to the center of the support 120 by screws contacts and tightens the workbench 130 through the plurality of self-locking tongues 154 extending in the circumferential direction of the central tensioning mechanism 150 and the locking sleeve 151 fixed to the center of the workbench 130 by screws, and the tensioning is safe and reliable.

[0053] The central tensioning mechanism 150 includes a tensioning body 156, a tensioning piston 155, a pressure cover 159, a latch 154, a wedge 152, a second elastic member 158, a first elastic member 153, a guide column 157 and a connecting pin 1510. The tensioning body 156 is fixed to the center of the support 120 by screws, the tensioning piston 155 placed inside the tensioning body 156 compresses the second elastic member 158 sleeved on the guide column 157, a plurality of guide columns 157 are placed in the cylindrical holes in the tensioning body 156, and the pressure cover 159 is fixed to the tensioning body 156 by screws to close the tensioning mechanism. A plurality of cylindrical wedges 152 placed in the cylindrical hole in the circumferential direction of the tensioning body 156 are connected to the tensioning piston 155 through a self-locking wedge groove, and the latch 154 is connected to the wedge 152 through a connecting pin 1510. The first elastic member 153 in a compressed state is placed between the latch 154 and the wedge 152. There is a small moving space between the connecting pin 1510 and the pin hole to adapt to the uneven contact between the plurality of latches 154 extending out at the same time and the inclined surface of the locking sleeve 151. When the hydraulic pressure pushes the tensioning piston 155 to move downward and further compresses the second elastic member 158, the wedge block 152 connected to the tensioning piston 155 through the self-locking wedge groove drives the latch tongue 154 to separate from the contact inclined surface of the locking sleeve 151, and the workbench 130 can start to be exchanged; when there is no hydraulic pressure, the second elastic member 158 releases part of the deformation, pushes the tensioning piston 155 to move upward, and the wedge block 152 connected to the tensioning piston 155 through the self-locking wedge groove drives the latch tongue 154 to extend out and contact the inclined surface of the locking sleeve 151 to tighten the workbench 130. The workbench 130 can rotate at high speed, and the tightening is safe and reliable.

[0054] Since the workbench 130 rotates at high speed, the hydraulic pressure required by the quick-insertion unit 200 and the center tensioning mechanism 150 cannot be provided by the oil distribution ring, and the device provides it through the oil circuit control unit 180. When the workbench 130 rotates at high speed, the oil circuit control unit 180 is separated from the rotating part; when the workbench 130 is stationary and needs hydraulic pressure, the oil circuit control unit 180 automatically and quickly docks with the rotating part, which is convenient and reliable. The oil circuit control unit 180 includes a lower cylinder body 181, an upper cylinder body 182, an oil circuit control piston 183 and a guide pin 187.

[0055] Specifically, the oil circuit control unit 180 fixes the oil cylinder lower body 181 to the central end surface of the base 110 by screws, fixes the oil cylinder upper body 182 to the oil cylinder lower body 181 by screws, and the oil circuit control piston 183 is placed inside the oil cylinder upper body 182 and the oil cylinder lower body 181 to form a hydraulic oil cylinder. The male plug 185 and the guide pin 187 are fixed on the oil circuit control piston 183, and the female plug 186 is fixed on the rotating support 120. When the hydraulic pressure pushes the oil circuit control piston 183 to move upward, the guide pin 187 and the male plug 185 fixed on the oil circuit control piston 183 are respectively connected with the guide groove 188 and the female plug 186 on the support 120, and the hydraulic oil circuit required by the quick-connect unit 200 and the center tensioning mechanism 150 is connected; when the hydraulic pressure pushes the oil circuit control piston 183 to move downward, the guide pin 187 and the male plug 185 fixed on the oil circuit control piston 183 are respectively separated from the guide groove 188 and the female plug 186 on the support 120, and the hydraulic oil circuit required by the quick-connect unit 200 and the center tensioning mechanism 150 is disconnected, and the workbench 130 can rotate.

[0056] The tightening / loosening of the central tensioning mechanism 150 and the docking / separation of the quick-connect unit 200 are all positionally detected, which is safe and reliable. The fixed tightening detection switch 173 tightened by the central tensioning mechanism 150 is fixed to the fixed sleeve 143 by screws, and the moving tightening detection switch 172 and the detection rod 171 are fixed to the central tensioning piston 155 by rivets, and move up and down with the tensioning piston 155; the detection member 192 is fixed to the lower body 181 of the oil cylinder by screws, and the detection plate 191 is fixed to the piston by screws, and moves up and down with the piston.

[0057] The brake assembly 160 fixed on the base 110 realizes the C-axis fixed angle locking and C-axis linkage damping cutting of the workbench 130 by clamping the brake disc 161 fixed on the support 120. The first friction plate 163 and the second friction plate 166 are placed on the upper and lower sides of the middle plate 164 respectively. The brake upper plate 165 and the middle plate 164 are fixed on the brake seat 162 by bolts. The brake seat 162 is fixed on the base 110 by bolts. The brake cover plate 1610 is fixed on the brake upper plate 165 by screws. There are several cylindrical holes on the middle plate 164 for placing the third elastic member 169, and there are several blind holes on the brake upper plate 165 and the brake seat 162 for placing the first piston 167 and the second piston 168. When the hydraulic pressure pushes the first piston 167 and the second piston 168 to compress the first friction plate 163 and the second friction plate 166 to cause elastic deformation, the brake disc 161 fixed on the support 120 by screws is clamped to achieve braking and damping cutting. At the same time, the third elastic member 169 is also compressed; when there is no hydraulic pressure, the third elastic member 169 releases the deformation to reset the first friction plate 163, the second friction plate 166, the first piston 167 and the second piston 168.

[0058] The rotary table device can realize automatic exchange of the table 130, improve processing efficiency, reduce the labor intensity of the operator, has a turning spindle function and a C-axis function, and is used in a vertical turning and milling compound machining center. When the table 130 rotates, the central tensioning mechanism 150 fixed on the support 120 contacts and tightens the table 130 through a plurality of self-locking tongues 154 extending in the circumferential direction thereof and a locking sleeve 151 fixed on the table 130, and the tightening is safe and reliable. The hydraulic pressure used by the quick-insertion unit 200 and the central tensioning mechanism 150 is provided conveniently and quickly through the oil circuit control unit 180 fixed on the base 110. The brake assembly 160 fixed on the base 110 realizes the C-axis fixed angle locking of the table 130 and the C-axis linkage damping cutting by clamping the brake disc 161 fixed on the support 120, thereby improving processing efficiency and processing quality.

[0059] like Figures 1 to 3 As shown, according to the second aspect of the present invention, a turning-milling compound machining center is proposed, comprising: a rotary table device as in any of the above technical solutions; a turning-milling machine tool, and the rotary table device is arranged on the turning-milling machine tool.

[0060] The turning-milling compound machining center provided by the present invention includes a rotary table device as in any of the above-mentioned technical solutions. Therefore, the turning-milling compound machining center has all the beneficial effects of the rotary table device in the above-mentioned technical solutions, which will not be elaborated here.

[0061] It is understandable that the turning-milling machining center can be equipped with multiple rotary table devices to further improve machining efficiency.

[0062] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0064] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary table device, characterized in that: include: A base, a support, a workbench and a driving assembly, wherein the workbench is detachably connected to the support, the driving assembly is arranged in the base, the output end of the driving assembly is connected to the support, and the driving assembly is used to drive the workbench and the support to rotate; a central tensioning mechanism, the central tensioning mechanism being arranged on the support and being used for locking the workbench when the workbench is connected to the support; a brake assembly, the brake assembly being used to apply damping to the support; Wherein, the central tensioning mechanism includes: a locking sleeve, a wedge block, a first elastic member, a tongue and a tensioning piston, the locking sleeve is connected to the middle part of the workbench, the locking sleeve is away from the end surface of the workbench to form a limiting portion, the wedge block is connected to the tensioning piston, and the tongue is connected to the wedge block through the first elastic member, when the tensioning piston moves in the direction close to the workbench, the tongue is clamped in the locking sleeve through the limiting portion to lock the workbench, and when the tensioning piston moves in the direction away from the workbench, the tongue compresses the first elastic member, the tongue is disengaged from the locking sleeve, and the workbench is unlocked.

2. The rotary table device according to claim 1, characterized in that: The central tensioning mechanism also includes: A tensioning body, the tensioning body being arranged in the middle of the support, and at least part of the tensioning piston being arranged in the tensioning body; A guide post connected to the tensioning body; a second elastic member, the second elastic member being sleeved on the guide column, the second elastic member being in contact with the tensioning piston, and being used for driving the tensioning piston to move toward the direction close to the workbench to lock the workbench when the tensioning piston loses external force; A pressure cover is connected to the tensioning body and is used to seal the tensioning piston and the wedge block.

3. The rotary table device according to claim 2, characterized in that: The central tensioning mechanism also includes: A connecting pin, a pin hole is formed on the wedge block, the space of the pin hole is larger than the diameter of the connecting pin, and the tongue is connected to the connecting pin so that there is freedom between the tongue and the connecting pin.

4. The rotary table device according to any one of claims 1 to 3, characterized in that: It also includes a detection switch assembly, which is used to obtain the locking state of the central tensioning mechanism, and the detection switch assembly includes: A detection rod, one end of which is connected to the tensioning piston, and the other end of which extends into the base; A motion tension detection switch, wherein the motion tension detection switch is arranged on the detection rod and moves with the detection rod; A fixed tension detection switch is arranged in the base.

5. The rotary table device according to any one of claims 1 to 3, characterized in that: The brake assembly comprises: a brake disc, the brake disc being connected to the support; A brake seat, wherein a first friction plate is arranged on the brake seat; An intermediate plate, the intermediate plate being arranged on the brake seat; A brake upper plate, the brake upper plate is connected to the middle plate, a second friction plate is formed on the brake upper plate, a gap is formed between the first friction plate and the second friction plate, and the brake disc is used to be arranged in the gap; a first piston, the first piston being disposed in the brake seat and used for pushing the first friction plate to move; A second piston, the second piston is arranged in the brake upper plate and is used to push the second friction plate to move; A third elastic member is disposed in the middle plate and is used for driving the first friction plate, the second friction plate, the first piston and the second piston to reset.

6. The rotary table device according to any one of claims 1 to 3, characterized in that: Also includes: An oil circuit control unit, which is used to control the opening and closing of the hydraulic oil circuit of the rotary table device, and the oil circuit control unit includes: A lower body of the oil cylinder, wherein the lower body of the oil cylinder is connected to the base; An oil cylinder upper body, the oil cylinder upper body being connected to the oil cylinder lower body; An oil circuit control piston, the oil circuit control piston is arranged in the oil cylinder lower body and the oil cylinder upper body to form a hydraulic oil cylinder; an oil supply pipeline, the oil supply pipeline being arranged on the support and being used at least to supply hydraulic oil to the tensioning piston; A male plug, the male plug being arranged on the oil circuit control piston; A female plug, the female plug is connected to the support and is connected to the oil supply pipeline. When the oil circuit control piston moves in a direction close to the support, the male plug is plugged into the female plug; A guide pin and a guide groove, wherein the guide groove is arranged on the support, and the guide pin is connected to the oil circuit control piston.

7. The rotary table device according to claim 6, characterized in that: Also includes: An oil circuit detection switch, the oil circuit detection switch comprising: A detection plate, the detection plate is connected to the oil circuit control piston; A detection member is connected to the lower body of the oil cylinder.

8. The rotary table device according to any one of claims 1 to 3, characterized in that: The drive assembly comprises: A torque motor and a cross tapered roller bearing, wherein the stator of the torque motor is connected to the base via a stator connecting plate, and the rotor of the torque motor is connected to the support via a bearing outer ring seat of the cross tapered roller bearing; A fixing sleeve, wherein the fixing sleeve is arranged in the base; An encoder and a connecting disk, part of the encoder is connected to the base through the fixing sleeve, and part of the encoder is connected to the support through the connecting disk.

9. The rotary table device according to any one of claims 1 to 3, characterized in that: Also includes: A quick-insertion unit, which is used for positioning the workbench and the support, and includes: A guide pin and a guide sleeve, wherein the guide sleeve is arranged on the workbench, and the guide pin is arranged on the support; The positioning assembly comprises a positioning seat, a positioning head and a locking member, wherein the positioning seat is arranged on the workbench, the positioning head is arranged on the support, the locking member is arranged on the positioning head, and the locking member is used to lock the positioning seat.

10. A turning and milling compound machining center, characterized in that: include: The rotary table device according to any one of claims 1 to 9; A turning and milling machine tool, wherein the rotary table device is arranged on the turning and milling machine tool.

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