Boring lathe for machining worm gear and worm
Through the design of the boring mechanism, cleaning mechanism and recovery mechanism of the boring lathe, the problem of debris accumulation during boring processing is solved, the processing accuracy and tool life are improved, the recycling of cutting fluid is realized, and the production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202511104966.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2025-09-12
AI Technical Summary
The metal debris generated by boring lathes during the machining process is easy to accumulate, resulting in uneven cutting force, increased tool wear, and increased workpiece surface roughness. In severe cases, it may even cause the boring tool to break or the workpiece to be scrapped, reducing machining accuracy and product qualification rate.
A boring lathe for worm gear processing was designed, which included a boring mechanism, a cleaning mechanism, and a recovery mechanism. Through the adjustment of the boring mechanism and the coordination of the rotation mechanism, the precise position adjustment of the boring head and the efficient cleaning of the cutting fluid were achieved. The cutting fluid was used to flush away the debris, and the cutting fluid was filtered and reused through the recovery mechanism.
It effectively avoids the accumulation of debris, improves the precision of boring processing and the product qualification rate, extends the life of the tool, realizes the recycling of cutting fluid, and reduces production costs.
Smart Images
Figure CN120619425A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present invention relate to the technical field of boring lathes, and in particular, to a boring lathe for machining worm gears. Background Art
[0002] In the field of mechanical transmission, worm gears are key components widely used in reducers, machine tool transmission systems, aerospace equipment, and more. Boring lathes are crucial equipment in the worm gear machining process, completing the boring process for worm gear parts. Their machining accuracy directly impacts the transmission performance and service life of the worm gear. The cutting motion of a boring lathe consists of a main motion and a feed motion. The main motion is the rotation of the boring tool, driven by the lathe spindle at high speed, providing cutting power to remove workpiece material. The feed motion refers to the linear movement of the boring tool or workpiece along the axis of the hole, which enables continuous cutting and forms a hole of the desired depth and shape. These two motions work together to complete the boring process.
[0003] However, during the boring process, a large amount of metal debris will be generated. These debris are easy to accumulate in the processing area. For example, they will be wrapped around the boring tool or the workpiece, hindering the normal cutting of the boring tool, resulting in uneven cutting force, causing increased tool wear and increased workpiece surface roughness. In severe cases, it may even cause the boring tool to break or the workpiece to be scrapped, reducing processing accuracy and product qualification rate. Summary of the Invention
[0004] In order to overcome the above-mentioned defects, the present invention provides a boring lathe for machining worm gears, which is used to solve the technical problem in the prior art that the debris generated by the boring lathe during the boring process easily affects the machining accuracy.
[0005] According to one aspect, at least one embodiment of the present invention provides a boring lathe for worm gear processing, comprising a base, a support seat, a fixed seat, an adjusting block, a boring mechanism and a cleaning mechanism, wherein the support seat is fixedly arranged on the base, the fixed seat is fixedly arranged on the support seat, a three-jaw chuck is fixedly arranged on the fixed seat, the adjusting block is slidably arranged on the support seat, a support column is penetrated and rotatably arranged on the adjusting block, a boring head is fixedly arranged on one end of the support column close to the fixed seat, the boring mechanism is arranged on the adjusting block for driving the boring head to bore the workpiece, and the cleaning mechanism is arranged on the support column for cleaning the debris generated during the boring process.
[0006] Preferably, the boring mechanism includes an adjusting seat, an adjusting plate, a threaded rod, a first motor and a rotating mechanism. The top side walls of the support seat are located at both ends of the adjusting block and are fixed with the adjusting seat and the adjusting plate respectively. The support column passes through the adjusting seat. The threaded rod is rotatably arranged between the adjusting seat and the adjusting plate. The threaded rod passes through the adjusting block through threaded fitting. The first motor is installed on the adjusting seat. The output end of the first motor is fixedly connected to the threaded rod. The rotating mechanism is arranged on the adjusting block for driving the support column to rotate.
[0007] Furthermore, a plurality of guide rods are fixedly provided between the adjustment plate and the adjustment seat, and the guide rods pass through the adjustment block and are slidably connected to the adjustment block.
[0008] Furthermore, the rotation mechanism includes a first cavity, a first gear ring, a first gear and a driving mechanism. The first cavity is opened in the adjusting block, the support column passes through the first cavity, the first gear ring is fixed on the side wall of the support column, the first gear is rotatably set in the first cavity, the first gear is engaged with the first gear ring, and the driving mechanism is on the adjusting block, which is used to drive the first gear to rotate.
[0009] Furthermore, the driving mechanism includes a second cavity, a second gear, a driving prism and a driving assembly, the second cavity is opened in the adjustment seat, the side wall of the second cavity is opened with a driving port, the second gear cavity is rotatably set in the second cavity, the driving prism is fixed on the second gear, the driving prism extends out of the adjustment block and passes through the driving port and the second gear, wherein the driving prism is slidingly connected to the second gear, and the driving assembly is set on the adjustment seat for driving the second gear to rotate.
[0010] Based on the above scheme, the drive assembly includes a third gear and a second motor. The third gear is rotatably arranged in the second cavity, the third gear is engaged with the second gear, the second motor is fixedly arranged on the adjustment seat, and the output end of the second motor is fixedly connected to the third gear.
[0011] On the basis of the above scheme, the cleaning mechanism includes a water inlet, a cleaning port, a rotary joint, a water supply mechanism and a recovery mechanism. The water inlet is opened on the support column, the cleaning port is opened on the side wall of the boring head, the cleaning port is connected with the water inlet, the rotary joint is installed on the support column, the rotary joint is connected with the water inlet, the water supply mechanism is arranged on one side of the base for supplying cutting fluid to the water inlet, and the recovery mechanism is arranged on the support seat for recovering the cutting fluid.
[0012] Based on the above scheme, the water supply mechanism includes a water tank and a water pump. The water tank is arranged on one side of the base. The water tank includes a box body and a box cover. The box cover is fixed to the box body by bolts. The water pump is installed on the box cover. The input end of the water pump is connected to the water tank, and the output end of the water pump is connected to the rotary joint.
[0013] On the basis of the above scheme, the recovery mechanism includes a recovery groove, a fixing ring, a filter plate and a positioning ring. The recovery groove is opened on the top side wall of the support seat. A recovery pipe is provided between the recovery groove and the box body. The fixing ring is fixedly provided on the inner wall of the box body. The filter plate is slidably provided in the box body. A sealing ring is fixedly provided on the side wall of the filter plate. The sealing ring contacts the side wall of the box body. The filter plate abuts against the fixing ring. The positioning ring is fixedly provided on the box cover. The positioning ring abuts against the filter plate.
[0014] Based on the above solution, a screen is fixedly installed in the recovery tank.
[0015] The beneficial effects of the embodiments of the present invention are: 1. In the present invention, through the setting of the boring mechanism, the operation of the first motor can drive the threaded rod to rotate, and the threaded rod and the adjustment block cooperate to drive the support column and the boring head to move, thereby facilitating the adjustment of the position of the boring head; 2. In the present invention, through the provision of the rotation mechanism, the operation of the second motor can drive the third gear to rotate, and the meshing of the third gear and the second gear can drive the second gear to rotate. The sliding cooperation between the second gear and the driving prism can then drive the driving prism and the first gear to rotate. The meshing of the first gear and the first gear ring can then drive the support column and the boring head to rotate, thereby facilitating the movement of the boring head to achieve boring of the workpiece. 3. In the present invention, by providing a cleaning mechanism, the water pump can drive the cutting fluid in the water tank to be pumped into the water inlet, and then sprayed into the boring hole through the cleaning port, so that the debris can be flushed out of the boring hole by the flow of the cutting fluid, thereby facilitating the cleaning of the debris; 4. In the present invention, through the setting of the recovery mechanism, the cutting fluid can enter the recovery tank after flowing out of the boring hole, and then return to the water tank through the recovery pipe. Then, during the operation of the water pump, the debris in the cutting fluid can be filtered through the screen and the filter plate, and the cutting fluid can be reused through the operation of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.
[0017] Figure 1 Schematic diagram of the structure of a boring lathe for machining worm gears in one embodiment of the present invention; Figure 2 Schematic diagram of the structure of a boring lathe for machining worm gears from another perspective in one embodiment of the present invention; Figure 3 It is a schematic structural diagram of a cross-section of a boring mechanism in one embodiment of the present invention; Figure 4 This is a schematic structural diagram of a cross-section of a driving mechanism in one embodiment of the present invention; Figure 5 This is a schematic structural diagram of a cross-section of a support column in one embodiment of the present invention; Figure 6 This is a schematic structural diagram of a cross-section of a recovery mechanism in one embodiment of the present invention; Figure 7 This is a schematic diagram of the exploded structure of a water tank in one embodiment of the present invention; In the figure: 1. Base; 2. Support seat; 3. Fixed seat; 4. Three-jaw chuck; 5. Adjusting block; 6. Support column; 7. Boring head; 8. Adjusting seat; 9. Adjusting plate; 10. Threaded rod; 11. First motor; 12. Guide rod; 13. First cavity; 14. First gear ring; 15. First gear; 16. Second cavity; 17. Second gear; 18. Driving prism; 19. Third gear; 20. Second motor; 21. Water inlet; 22. Cleaning port; 23. Rotary joint; 24. Box body; 25. Box cover; 26. Water pump; 27. Recovery tank; 28. Recovery pipe; 29. Fixing ring; 30. Filter plate; 31. Positioning ring; 32. Screen. DETAILED DESCRIPTION The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.
[0018] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."
[0019] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.
[0020] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0021] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.
[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0023] like Figure 1-Figure 7As shown, it shows a boring lathe for worm gear processing in one embodiment of the present invention, including a base 1, a support base 2, a fixed base 3, an adjusting block 5, a boring mechanism and a cleaning mechanism. The support base 2 is fixedly set on the base 1, the fixed base 3 is fixedly set on the support base 2, a three-jaw chuck 4 is fixedly set on the fixed base 3, the adjusting block 5 is slidably set on the support base 2, a support column 6 is penetrated and rotatably set on the adjusting block 5, a boring head 7 is fixedly set on one end of the support column 6 close to the fixed base 3, the boring mechanism is set on the adjusting block 5, and is used to drive the boring head 7 to bore the workpiece, and the cleaning mechanism is set on the support column 6, and is used to clean the debris generated during the boring process.
[0024] Reference Figures 1-4 The boring mechanism includes an adjusting seat 8, an adjusting plate 9, a threaded rod 10, a first motor 11 and a rotating mechanism. The top side walls of the support seat 2 are located at both ends of the adjusting block 5, and an adjusting seat 8 and an adjusting plate 9 are fixedly provided thereon. The support column 6 passes through the adjusting seat 8, and the threaded rod 10 is rotatably arranged between the adjusting seat 8 and the adjusting plate 9. The threaded rod 10 passes through the adjusting block 5 through threaded cooperation. The first motor 11 is installed on the adjusting seat 8, and the output end of the first motor 11 is fixedly connected to the threaded rod 10. The rotating mechanism is arranged on the adjusting block 5 for driving the support column 6 to rotate. A plurality of guide rods 12 are fixedly provided between the adjusting plate 9 and the adjusting seat 8, and the guide rod 12 passes through the adjusting block 5 and is slidably connected to the adjusting block 5. Specifically, the threaded rod 10 can be driven to rotate by the work of the first motor 11, and at the same time, the support column 6 and the boring head 7 are driven to move through the threaded cooperation between the threaded rod 10 and the adjusting block 5, thereby facilitating the adjustment of the position of the boring head 7.
[0025] Reference Figures 1-4The rotating mechanism includes a first cavity 13, a first gear ring 14, a first gear 15 and a driving mechanism. The first cavity 13 is opened in the adjusting block 5, the support column 6 passes through the first cavity 13, the first gear ring 14 is fixedly arranged on the side wall of the support column 6, the first gear 15 is rotatably arranged in the first cavity 13, the first gear 15 is engaged with the first gear ring 14, and the driving mechanism is on the adjusting block 5 for driving the first gear 15 to rotate. The driving mechanism includes a second cavity 16, a second gear 17, a driving prism 18 and a driving assembly. The second cavity 16 is opened in the adjusting seat 8, and a driving port is opened on the side wall of the second cavity 16. The second gear 17 cavity is rotatably arranged in the second cavity 16. The driving prism 18 is fixed on the second gear 17. The driving prism 18 extends out of the adjusting block 5 and passes through the driving port and the second gear 17, wherein the driving prism 18 is slidably connected to the second gear 17 Next, the driving assembly is arranged on the adjusting seat 8, and is used to drive the second gear 17 to rotate. The driving assembly includes a third gear 19 and a second motor 20. The third gear 19 is rotatably arranged in the second cavity 16, and the third gear 19 is engaged with the second gear 17. The second motor 20 is fixedly arranged on the adjusting seat 8, and the output end of the second motor 20 is fixedly connected to the third gear 19. Specifically, the operation of the second motor 20 can drive the third gear 19 to rotate, and at the same time, the second gear 17 is driven to rotate through the engagement of the third gear 19 with the second gear 17, and then the driving prism 18 and the first gear 15 are driven to rotate through the sliding cooperation relationship between the second gear 17 and the driving prism 18, and then the support column 6 and the boring head 7 are driven to rotate through the engagement of the first gear 15 with the first gear ring 14, so as to facilitate the boring of the workpiece in coordination with the movement of the boring head 7.
[0026] Reference Figure 5-Figure 7The cleaning mechanism includes a water inlet 21, a cleaning port 22, a rotary joint 23, a water supply mechanism and a recovery mechanism. The water inlet 21 is provided on the support column 6, the cleaning port 22 is provided on the side wall of the boring head 7, the cleaning port 22 is connected to the water inlet 21, the rotary joint 23 is installed on the support column 6, the rotary joint 23 is connected to the water inlet 21, the water supply mechanism is provided on one side of the base 1 for supplying water to the water inlet 21, the recovery mechanism is provided on the support seat 2 for recovering water, and the water supply mechanism is provided on the support seat 2 for recovering water. The water mechanism includes a water tank and a water pump 26. The water tank is arranged on one side of the base 1. The water tank includes a box body 24 and a box cover 25. The box cover 25 is fixed to the box body 24 by bolts. The water pump 26 is installed on the box cover 25. The input end of the water pump 26 is connected to the water tank, and the output end of the water pump 26 is connected to the rotary joint 23. The recovery mechanism includes a recovery groove 27, a fixing ring 29, a filter plate 30 and a positioning ring 31. The recovery groove 27 is opened on the top side wall of the support base 2. The recovery groove 27 is connected to the box body. A recovery pipe 28 is provided between the box body 24, a fixing ring 29 is fixedly provided on the inner wall of the box body 24, a filter plate 30 is slidably provided in the box body 24, a sealing ring is fixedly provided on the side wall of the filter plate 30, the sealing ring contacts the side wall of the box body 24, the filter plate 30 abuts against the fixing ring 29, a positioning ring 31 is fixedly provided on the box cover 25, the positioning ring 31 abuts against the filter plate 30, a screen 32 is fixedly provided in the recovery tank 27, specifically, the water tank can be driven by the work of the water pump 26. The cutting fluid is pumped into the water inlet 21 and then sprayed into the boring hole through the cleaning port 22, so that the debris can be flushed out of the boring hole through the flow of the cutting fluid, thereby facilitating the cleaning of the debris. After flowing out of the boring hole, the cutting fluid can enter the recovery tank 27 and then return to the water tank through the recovery pipe 28. During the operation of the water pump 26, the debris in the cutting fluid can be filtered through the screen 32 and the filter plate 30, and the cutting fluid can be reused through the operation of the water pump 26.
[0027] In this embodiment, when in use, after the operator fixes the worm gear with the three-jaw chuck 4, the operator controls the first motor 11 to work, and the operation of the first motor 11 can drive the threaded rod 10 to rotate, and at the same time, the threaded cooperation between the threaded rod 10 and the adjusting block 5 drives the support column 6 and the boring head 7 to move, thereby facilitating the adjustment of the position of the boring head 7. At the same time, the operator controls the second motor 20 to work, and the operation of the second motor 20 can drive the third gear 19 to rotate, and at the same time, the meshing of the third gear 19 with the second gear 17 drives the second gear 17 to rotate, and then the sliding cooperation relationship between the second gear 17 and the driving prism 18 drives the driving prism 18 and the first gear 15 to rotate, thereby adjusting the position of the boring head 7. The engagement of the first gear 15 and the first gear ring 14 drives the support column 6 and the boring head 7 to rotate, thereby facilitating the movement of the boring head 7 to realize boring of the workpiece. At the same time, during the boring process, the operation of the water pump 26 can drive the cutting fluid in the water tank to be pumped into the water inlet 21, and then sprayed into the boring hole through the cleaning port 22, so that the debris can be flushed out of the boring hole by the flow of the cutting fluid, thereby facilitating the cleaning of the debris. After flowing out of the boring hole, the cutting fluid can enter the recovery tank 27, and then return to the water tank through the recovery pipe 28. Then, during the operation of the water pump 26, the debris in the cutting fluid can be filtered through the screen 32 and the filter plate 30, and the cutting fluid can be reused by the operation of the water pump 26.
[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A boring lathe for processing worm gears, comprising a base (1), characterized in that: Also includes: A support seat (2), the support seat (2) being fixedly arranged on the base (1); A fixed seat (3), the fixed seat (3) is fixedly arranged on the support seat (2), and a three-jaw chuck (4) is fixedly arranged on the fixed seat (3); An adjusting block (5), the adjusting block (5) being slidably arranged on the supporting seat (2), a supporting column (6) being rotatably arranged through the adjusting block (5), and a boring head (7) being fixedly arranged at one end of the supporting column (6) close to the fixing seat (3); A boring mechanism, the boring mechanism being arranged on the adjusting block (5) and being used for driving the boring head (7) to bore a workpiece; A cleaning mechanism is provided on the support column (6) and is used to clean debris generated during the boring process.
2. A boring lathe for processing worm gears according to claim 1, characterized in that: The boring mechanism comprises: An adjustment seat (8) and an adjustment plate (9), wherein the top side walls of the support seat (2) are located at both ends of the adjustment block (5), and the adjustment seat (8) and the adjustment plate (9) are fixedly provided thereon, respectively, and the support column (6) passes through the adjustment seat (8); a threaded rod (10), the threaded rod (10) being rotatably disposed between the adjustment seat (8) and the adjustment plate (9), the threaded rod (10) penetrating the adjustment block (5) via threaded engagement; a first motor (11), the first motor (11) being mounted on the adjustment seat (8), the output end of the first motor (11) being fixedly connected to the threaded rod (10); A rotating mechanism is provided on the adjusting block (5) and is used to drive the supporting column (6) to rotate.
3. A boring lathe for processing worm gears according to claim 2, characterized in that: A plurality of guide rods (12) are fixedly arranged between the adjustment plate (9) and the adjustment seat (8), and the guide rods (12) pass through the adjustment block (5) and are slidably connected to the adjustment block (5).
4. A boring lathe for processing worm gears according to claim 3, characterized in that: The rotating mechanism comprises: A first cavity (13), the first cavity (13) being provided in the regulating block (5), and the supporting column (6) passing through the first cavity (13); a first toothed ring (14), the first toothed ring (14) being fixedly arranged on a side wall of the support column (6); a first gear (15), the first gear (15) being rotatably disposed in the first cavity (13), the first gear (15) being meshed with the first gear ring (14); A driving mechanism is provided on the adjusting block (5) and is used to drive the first gear (15) to rotate.
5. A boring lathe for processing worm gears according to claim 4, characterized in that: The driving mechanism comprises: a second cavity (16), the second cavity (16) being provided in the adjustment seat (8), and a driving opening being provided on a side wall of the second cavity (16); a second gear (17), the second gear (17) being rotatably disposed in the second cavity (16); a driving prism (18), wherein the driving prism (18) is fixed on the second gear (17), and the driving prism (18) extends out of the adjustment block (5) and passes through the driving port and the second gear (17); wherein the driving prism (18) is slidably connected to the second gear (17); A drive assembly is provided on the adjustment seat (8) and is used to drive the second gear (17) to rotate.
6. A boring lathe for machining worm gears according to claim 5, characterized in that: The drive assembly includes: a third gear (19), the third gear (19) being rotatably disposed in the second cavity (16), the third gear (19) being meshed with the second gear (17); A second motor (20), the second motor (20) is fixedly arranged on the adjustment seat (8), and an output end of the second motor (20) is fixedly connected to the third gear (19).
7. A boring lathe for machining worm gears according to claim 6, characterized in that: The cleaning mechanism comprises: a water inlet (21), the water inlet (21) being provided on the support column (6); A cleaning port (22), the cleaning port (22) being provided on a side wall of the boring head (7), the cleaning port (22) being in communication with the water inlet (21); A rotary joint (23), the rotary joint (23) being mounted on the support column (6), the rotary joint (23) being in communication with the water inlet (21); a water supply mechanism, the water supply mechanism being arranged on one side of the base (1) and being used to supply cutting fluid to the water inlet (21); A recovery mechanism is provided on the support seat (2) and is used for recovering the cutting fluid.
8. A boring lathe for machining worm gears according to claim 7, characterized in that: The water supply mechanism includes: A water tank, the water tank being arranged on one side of the base (1), the water tank comprising a box body (24) and a box cover (25), the box cover (25) being fixed to the box body (24) by bolts; A water pump (26) is installed on the tank cover (25), an input end of the water pump (26) is communicated with the water tank, and an output end of the water pump (26) is communicated with the rotary joint (23).
9. A boring lathe for machining worm gears according to claim 8, characterized in that: The recycling mechanism includes: A recovery trough (27), the recovery trough (27) being provided on the top side wall of the support seat (2), and a recovery pipe (28) being provided between the recovery trough (27) and the box body (24); a fixing ring (29), the fixing ring (29) being fixedly arranged on the inner wall of the box body (24); A filter plate (30), the filter plate (30) being slidably disposed in the box body (24), a sealing ring being fixedly disposed on the side wall of the filter plate (30), the sealing ring being in contact with the side wall of the box body (24), and the filter plate (30) being in contact with the fixing ring (29); A positioning ring (31), wherein the positioning ring (31) is fixedly arranged on the box cover (25), and the positioning ring (31) abuts against the filter plate (30).
10. A boring lathe for machining worm gears according to claim 9, characterized in that: A screen (32) is fixedly provided in the recovery tank (27).