Tool turret with center frame

Abstract

According to the tool turret with the center frame, a center frame installation support is arranged on a tool position of a tool turret tray, the center frame is installed through the center frame installation support, a fluid channel in a tool turret box provides fluid needed by work for the center frame, and the tool turret can be flexibly switched between a tool and the center frame by rotating the tool turret tray. The tool turret integrates the supporting function of the center frame while being compatible with various tools, an independent center frame does not need to be additionally arranged, integration of the tool turret and the center frame is achieved, the relative positions of the tool turret and the center frame are fixed, the trouble of repeated adjustment is avoided, and the positioning precision is improved. A cutter can be installed for turning, the center frame can also be used as a center frame to support a workpiece to complete machining of slender shaft parts, multiple purposes of one machine are truly achieved, and the comprehensive utilization rate and machining flexibility of equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of machine tool turret technology, and more particularly to a turret with a center support. Background Technology

[0002] When machining slender shaft parts (such as long shafts and thin rods) on CNC lathes, the workpiece's overhang length is usually much larger than its diameter. Due to insufficient rigidity, it is prone to bending deformation or vibration, which seriously affects machining accuracy and surface quality. To solve this problem, traditional techniques usually add a center rest to the machine tool as an auxiliary support device.

[0003] In the existing design, the turret and center rest are two independent functional units, installed in different positions on the machine tool. This independent configuration has defects in structure, operation, and collaborative control, as follows: Firstly, the structural layout is loose and occupies a large amount of machine tool space: the turret and center rest are installed independently, resulting in a dispersed overall structure. To ensure the travel of the turret and center rest, the length of the machine bed often needs to be increased, which not only increases the size of the equipment, but the independently installed turret and center rest are also prone to interference with other functional modules, limiting the flexibility of the machine tool layout and reducing the degree of integration.

[0004] Secondly, the relative position adjustment is cumbersome and affects the processing efficiency: When processing slender shafts of different specifications, the relative position of the center rest and the tool turret needs to be repeatedly adjusted according to the length, diameter and processing position of the workpiece. The operation steps are complicated and time-consuming, which makes it difficult to meet the high efficiency requirements of modern CNC machining.

[0005] Third, collaborative control is difficult and the coordination of actions is poor: the turret and the center support lack a linkage mechanism in terms of timing and position synchronization, which easily leads to action conflicts and affects the stability and safety of processing.

[0006] In summary, the traditional independent configuration of the turret and center rest has significant shortcomings in terms of space utilization, ease of operation, and functional synergy, making it difficult to meet the needs of modern CNC machining. Summary of the Invention

[0007] The present invention provides a turret with a central support to overcome the above-mentioned technical problems.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows: A turret with a center frame includes: a turret box and a turret plate disposed on the turret box, the turret plate having multiple tool positions and one of the tool positions having a center frame mounting bracket, the center frame being disposed on the center frame mounting bracket, and the turret box having a plurality of fluid channels for supplying fluid to the center frame.

[0009] Furthermore, the turret box includes a turret box cover and a turret box body with multiple channels, a distribution block, a bushing, a gearbox, a docking plate, and a distributor, with the channels connected in sequence forming a fluid channel; The turret disc is rotatably connected to the turret housing, the distribution block is fixed on the turret housing, the gearbox is fixed on the turret housing through a bushing, and the docking disc is fixed at the end of the gearbox away from the bushing. The distributor includes a fixed part and a rotating part. The rotating part is connected to the central frame through a pipeline. The fixed part is fixed at the end of the docking plate away from the gearbox. The rotating part and the fixed part are rotatably sealed and fixedly connected to the turret cover. The turret cover is fixedly connected to the turret plate.

[0010] Furthermore, the fixing part includes an inner ring and an outer ring of the distributor, and the rotating part is an output flange ring; The inner ring of the distributor is fixed to the end of the docking plate away from the gearbox, the outer ring of the distributor is sleeved on the outer circumference of the inner ring of the distributor and fixed to the inner ring of the distributor, and the output flange ring is sleeved on the outer circumference of the outer ring of the distributor and fixedly connected to the turret cover.

[0011] Furthermore, the inner ring and outer ring of the distributor are provided with grooves at the ends away from the docking plate, and the inner ring and outer ring of the distributor are connected by a brake block in the groove.

[0012] Furthermore, it also includes a gearbox adjusting shim with multiple channels, the gearbox adjusting shim being located between the gearbox and the bushing.

[0013] Furthermore, the central frame mounting bracket is provided with a cooling channel connecting the water-cooling pipeline inside the turret box.

[0014] Furthermore, the turret box is provided with four fluid channels that can be connected to the center frame. The four fluid channels include a lubricating oil channel, an air-tight channel, a hydraulic clamping channel, and a hydraulic releasing channel.

[0015] Furthermore, it also includes a seal disposed between the mating surfaces of adjacent channels.

[0016] Furthermore, the docking plate is connected to the gearbox via a locating pin.

[0017] Furthermore, the turret box is mounted on a sliding platform.

[0018] Beneficial effects: This invention provides a tool turret with a center rest. A center rest mounting bracket is installed on the tool position of the turret disc, and the center rest is mounted via this bracket. A fluid channel within the turret housing provides the necessary fluid for the center rest's operation. The turret can flexibly switch between the tool and center rest by rotating the turret disc. This allows the turret to be compatible with various tools while integrating the support function of the center rest, eliminating the need for a separate center rest and achieving a unified design of the turret and center rest. Their relative positions are fixed, avoiding the hassle of repeated adjustments and improving positioning accuracy. It can be used to mount tools for turning operations and also as a center rest to support workpieces for machining slender shaft parts, truly achieving multi-purpose functionality and improving the overall utilization rate and processing flexibility of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view schematic diagram of a turret with a central support disclosed in this invention; Figure 2 This is a side view schematic diagram of a turret with a central support disclosed in this invention; Figure 3 This is a side view schematic diagram of a turret with a central frame for removing the protective cover, as disclosed in this invention. Figure 4 for Figure 2 AA sectional view; Figure 5 for Figure 4 BB cross-sectional diagram; Figure 6 for Figure 4 CC cross-sectional view; Figure 7 for Figure 2 DD cross-sectional view; Figure 8 for Figure 1 EE sectional view; Figure 9 for Figure 2 FF sectional view; Figure 10 for Figure 9 A cross-sectional view of GG.

[0021] In the diagram: 1. Turret housing; 2. Turret plate; 3. Center frame mounting bracket; 4. Center frame; 5. Lubrication interface; 6. Gas seal interface; 7. Cooling water interface; 8. Hydraulic release interface; 9. Hydraulic clamping interface; 10. Distribution block; 11. Bushing; 12. Gearbox adjusting shim; 13. Gearbox; 14. Connecting plate; 15. Distributor inner ring; 16. Distributor outer ring; 17. Output flange ring; 18. Turret housing cover; 19. Brake block; 20. Cooling channel; 21. Seal; 22. Protective cover; 23. Connector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1 This embodiment provides a turret with a central support, such as Figure 1 As shown, it includes: a turret box and a turret plate 2 disposed on the turret box. The turret plate 2 has multiple tool positions, and one of the tool positions is provided with a center frame mounting bracket 3. A center frame 4 is disposed on the center frame mounting bracket 3. The turret box is provided with multiple fluid channels for conveying fluid to the center frame 4, avoiding the need to lay a long pipeline for conveying fluid separately outside the turret box. The fluid is selected from lubricating oil, hydraulic oil and clean gas.

[0024] This embodiment provides a tool turret with a center rest. A center rest mounting bracket 3 is installed on the tool position of the tool turret disk 2, and a center rest 4 is mounted via the bracket 3. A fluid channel within the turret housing provides the necessary fluid for the center rest's operation. The turret can flexibly switch between the tool and the center rest by rotating the tool turret disk 2 (the tool turret disk 2 rotates under the action of a drive motor, achieving tool position switching; this is existing technology and will not be elaborated further). This allows the turret to be compatible with various tools while integrating the support function of the center rest, eliminating the need for a separate center rest and achieving integration of the turret and center rest. Their relative positions are fixed, avoiding the hassle of repeated adjustments and improving positioning accuracy. Within a unit space, compared to the traditional independent configuration of the turret and center rest, the machine tool equipped with the turret provided in this embodiment has a longer effective travel.

[0025] It can be used to install cutting tools for turning, and it can also be used as a center rest to support workpieces for machining slender shaft parts, truly realizing multiple uses in one machine and improving the overall utilization rate and processing flexibility of the equipment.

[0026] Specifically, such as Figure 4 As shown, the turret box includes a turret box cover 18 and a turret box body 1 with multiple channels, a distribution block 10, a bushing 11, a gearbox adjusting pad 12, a gearbox 13, a docking plate 14 and a distributor, and the channels connected in sequence form a fluid channel. The turret disc 2 is rotatably connected to the turret housing 1 via bearings. The distribution block 10 is fixed on the turret housing 1. The gearbox adjustment shim 12 is located between the gearbox 13 and the bushing 11. The gearbox 13 is mounted on the turret housing 1 via the bushing 11 and the gearbox adjustment shim 12. The mating disc 14 is fixed to the end of the gearbox 13 away from the bushing 11 by bolts. The gearbox adjustment shim 12 facilitates the alignment of the gearbox 13 with the tool mounting hole of the turret disc 2. In this embodiment, the bushing 11 is fixed to the turret housing 1 by bolts, and the bushing 11, the gearbox adjusting pad 12 and the gearbox 13 can be connected by elastic pins (or other fasteners). The distributor includes a fixed part and a rotating part. The rotating part is externally connected to the center frame 4 via a pipeline. The fixed part is fixed to the end of the docking plate 14 away from the gearbox 13 by an elastic pin (or other fasteners). The rotating part and the fixed part are rotary sealed (the seal can be achieved by a Glyd ring). The rotating part is fixedly connected to the turret cover 18. The turret cover 18 is fixedly connected to the turret plate 2 by bolts, so that the rotating part can rotate with the turret plate 2.

[0027] Specifically, such as Figure 4 As shown, the fixing part includes an inner ring 15 and an outer ring 16 of the distributor, and the rotating part is an output flange ring 17, as shown. Figure 2 and Figure 4 As shown, a protective cover 22 is fixed to the end of the output flange ring 17 away from the turret cover 18 to prevent the inner ring 15 and the outer ring 16 of the distributor from being exposed. The inner ring 15 of the distributor is fixed to the end of the docking plate 14 away from the gearbox 13 by an elastic pin (or other fasteners). The outer ring 16 of the distributor is sleeved on the outer periphery of the inner ring 15 and fixed together with the inner ring 15. The output flange ring 17 is sleeved on the outer periphery of the outer ring 16 and fixedly connected to the turret cover 18. The structural design of the distributor realizes centralized management of different fluids.

[0028] Specifically, such as Figure 3As shown, both the inner ring 15 and the outer ring 16 of the distributor have grooves at their ends away from the docking plate 14. The inner ring 15 and the outer ring 16 of the distributor are connected by brake blocks 19 in the grooves. The middle part of the brake block 19 is fixed in the groove of the inner ring 15 of the distributor by bolts, and both ends of the brake block 19 are located in the groove of the outer ring 16 of the distributor, so that the outer ring 16 of the distributor is fixed to the inner ring 15 of the distributor and does not rotate with the output flange ring 17.

[0029] Specifically, the turret box is provided with four fluid channels that can be connected to the central frame 4. The four fluid channels include a lubricating oil channel, an air-tight channel, a hydraulic clamping channel, and a hydraulic releasing channel. In practical applications, the turret box may also be equipped with a fluid channel connected to the central frame 4, which can provide cooling water.

[0030] Specifically, such as Figure 7 As shown, it also includes a seal 21, which is disposed between the mating surfaces of adjacent channels, and the seal is selected from sealing rings and Glyd rings.

[0031] Preferably, the docking plate 14 and the gearbox 13 are connected by a locating pin to ensure positioning accuracy.

[0032] Specifically, the turret box 1 of the turret box is fixed to the slide table by bolts, and the turret is moved by the slide table.

[0033] To provide a more intuitive description of the structure of the fluid channels, the following explanation is provided in conjunction with the accompanying drawings. (The channels corresponding to different fluid channels on some parts are not located on the same cross-section. Therefore, in the accompanying drawings described below, there are cases where only a single fluid channel channel is shown. The principle by which the channels corresponding to different fluid channels constitute a complete fluid channel is the same and will not be repeated here.) like Figure 5 As shown, the distribution block 10 is provided with connectors 23 for external lubrication system, hydraulic system and air supply system (if the turret box is also provided with a fluid channel for providing cooling water, then a connector 23 for connecting to the water cooling system is added, and corresponding channels are added accordingly). The distribution block 10 is provided with channels corresponding to the lubricating oil flow channel, the air seal flow channel, the hydraulic clamping flow channel and the hydraulic release flow channel respectively. like Figure 7 As shown, the turret housing 1, distribution block 10, bushing 11, gearbox adjusting pad 12, and gearbox 13 are all provided with straight channels corresponding to the lubricating oil flow channel, the air seal flow channel, the hydraulic clamping flow channel, and the hydraulic release flow channel, respectively. like Figure 6 As shown, the mating plate 14 is provided with channels corresponding to the lubricating oil flow channel, the air seal flow channel, the hydraulic clamping flow channel and the hydraulic release flow channel respectively. like Figure 8As shown, the inner ring 15 and outer ring 16 of the distributor are provided with channels corresponding to the lubricating oil flow channel, the air seal flow channel, the hydraulic clamping flow channel, and the hydraulic releasing flow channel, respectively. The channels on the inner ring 15 and outer ring 16 corresponding to the same fluid channel have different orientations. Therefore, an annular channel is provided between the inner ring 15 and outer ring 16 of the distributor. The annular channel connects the channels on the inner ring 15 and outer ring 16 corresponding to the same fluid channel (the annular channel can be formed by slotting the outer wall of the inner ring 15 of the distributor). like Figure 8 As shown, the output flange ring 17 is provided with a channel. When the turret 2 rotates to the tool position where the center frame 4 can support the workpiece, the channel on the output flange ring 17 is connected to the outer ring 16 of the distributor. The output flange ring 17 is connected to the lubrication interface 5, air seal interface 6, hydraulic release interface 8 and hydraulic clamping interface 9 of the center frame 4 through pipelines (if the turret box is provided with a fluid channel for providing cooling water, the output flange ring 17 is connected to the cooling water interface of the center frame 4 through pipelines), and the fluid is delivered to the center frame 4 through the output flange ring 17.

[0034] The lubrication interface 5 of the center frame 4 is responsible for supplying lubricating oil to ensure that the rollers of the center frame 4 are fully lubricated during operation, reducing wear; the air-tight interface 6 introduces clean gas to create an internal negative pressure environment for the center frame 4, effectively isolating external contaminants from intrusion and maintaining the cleanliness of the core components; the cooling water interface 7 continuously supplies cooling water during processing, which can alleviate thermal deformation caused by friction and simultaneously flush away iron filings and residues, improving processing stability; the hydraulic release interface 8 and the hydraulic clamping interface 9 realize the clamping function of the center frame 4 through hydraulic drive, so that the center frame 4 can adapt to parts of different specifications within a certain range, ensuring reliable support for workpieces of different specifications (the specific structure of the center frame 4 is existing technology and will not be described in detail).

[0035] In this embodiment, the turret's cutting tool and the center rest 4 are not used simultaneously. When machining slender shaft-like parts, the machine tool's machining spindle is used. The workpiece is mounted on the chuck of the machine tool's workpiece spindle. Based on the workpiece length, the turret position is adjusted by the CNC system, and the center rest 4 clamps the workpiece. During machining, the center rest 4 provides support for the workpiece, thereby effectively suppressing the vibration and deformation of the workpiece. When machining other types of parts, the turret's cutting tool can be used.

[0036] The tool turret with a center rest disclosed in this embodiment is particularly suitable for machining slender shaft parts with a length-to-diameter ratio greater than 10, and has broad application prospects in aerospace, automobile manufacturing, precision instruments and other fields.

[0037] Example 2 This embodiment provides a turret with a central support. The main structure of this embodiment is the same as that of Embodiment 1. The difference between this embodiment and Embodiment 1 is as follows: In Embodiment 1, the turret box is provided with a fluid channel connected to the central frame 4, which can provide cooling water.

[0038] In this embodiment, such as Figure 9 and Figure 10 As shown, the central frame mounting bracket 3 is provided with a cooling channel 20 that connects to the water cooling pipeline inside the turret box. It is no longer necessary to set up a separate fluid channel for supplying cooling water in the turret box for the water cooling of the central frame 4. The cooling channel 20 is connected to the cooling water interface 7 through a pipeline. The central frame 4 and the turret box share the water cooling pipeline.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A turret with a central support, characterized in that, include: The turret box and the turret plate (2) set on the turret box, the turret plate (2) has multiple tool positions and one of the tool positions is provided with a center frame mounting bracket (3), the center frame mounting bracket (3) is provided with a center frame (4), and the turret box is provided with several fluid channels for conveying fluid to the center frame (4).

2. A turret with a central support as described in claim 1, characterized in that, The turret box includes a turret box cover (18) and a turret box body (1) with multiple channels, a distribution block (10), a bushing (11), a gearbox (13), a docking plate (14) and a distributor, with the channels connected in sequence forming a fluid channel; The turret disc (2) is rotatably connected to the turret housing (1), the distribution block (10) is fixed on the turret housing (1), the gearbox (13) is fixed on the turret housing (1) through the bushing (11), and the docking disc (14) is fixed at the end of the gearbox (13) away from the bushing (11). The distributor includes a fixed part and a rotating part. The rotating part is connected to the center frame (4) through a pipeline. The fixed part is fixed at the end of the docking plate (14) away from the gearbox (13). The rotating part and the fixed part are rotated and sealed and fixedly connected to the turret cover (18). The turret cover (18) is fixedly connected to the turret plate (2).

3. A turret with a central support frame according to claim 2, characterized in that, The fixing part includes an inner ring (15) of the distributor and an outer ring (16) of the distributor, and the rotating part is an output flange ring (17). The inner ring (15) of the distributor is fixed to the end of the docking plate (14) away from the gearbox (13). The outer ring (16) of the distributor is sleeved on the outer periphery of the inner ring (15) and fixed to the inner ring (15). The output flange ring (17) is sleeved on the outer periphery of the outer ring (16) of the distributor and fixedly connected to the turret cover (18).

4. A turret with a central support frame according to claim 3, characterized in that, The inner ring (15) and outer ring (16) of the distributor are provided with grooves at the ends away from the docking plate (14), and the inner ring (15) and outer ring (16) of the distributor are connected by a brake block (19) in the groove.

5. A turret with a central support frame according to claim 2, characterized in that, It also includes a gearbox adjusting pad (12) with multiple channels, which is located between the gearbox (13) and the bushing (11).

6. A turret with a central support frame according to claim 1, characterized in that, The central frame mounting bracket (3) is provided with a cooling channel (20) that connects to the water cooling pipes inside the turret box.

7. A turret with a central support frame according to claim 1, characterized in that, The turret box is provided with four fluid channels that can be connected to the central frame (4). The four fluid channels include a lubricating oil channel, an air-tight channel, a hydraulic clamping channel, and a hydraulic releasing channel.

8. A turret with a central support frame according to claim 1, characterized in that, It also includes a seal (21) disposed between the mating surfaces of adjacent channels.

9. A turret with a central support frame according to claim 2, characterized in that, The docking plate (14) is connected to the gearbox (13) by a locating pin.

10. A turret with a central support frame according to claim 1, characterized in that, The turret box is mounted on a sliding platform.

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