CN114346275A - Servo turret with odd cutter positions - Google Patents
Servo turret with odd cutter positions Download PDFInfo
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- CN114346275A CN114346275A CN202210086237.0A CN202210086237A CN114346275A CN 114346275 A CN114346275 A CN 114346275A CN 202210086237 A CN202210086237 A CN 202210086237A CN 114346275 A CN114346275 A CN 114346275A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
- B23B29/32—Turrets adjustable by power drive, i.e. turret heads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses an odd-number cutter position servo cutter tower which comprises a box body, a cutter tower main shaft, a cutter disc, a triple fluted disc and a servo motor, wherein the cutter tower main shaft and the servo motor are respectively installed in the box body, the cutter disc is rotatably installed at the front end of the box body, a piston tooth and a fixed fluted disc of the triple fluted disc are respectively sleeved on the outer side of the cutter tower main shaft in a front-back mode, a first hydraulic cavity and a second hydraulic cavity are arranged between the cutter tower main shaft and the piston tooth, the fixed fluted disc is fixed on the box body, the rear end of the piston tooth is meshed with the front end of the fixed fluted disc, the movable fluted disc is meshed with the output end of the servo motor, the cutter disc is fixedly connected with the movable fluted disc, a cutter disc cooling mechanism is arranged in the box body, odd-number cutter positions for installing cutters are arranged on the cutter disc, and the odd-number cutter positions are arranged at equal intervals along the circumferential direction of the cutter disc. The servo turret is simple in structure, excellent in performance and simple and convenient to operate, can be applied to a double-spindle turning center and a double-spindle turning and milling combined machining center, saves machine tool space, machine tool cost and cutter cost, and greatly improves production efficiency.
Description
Technical Field
The invention relates to a turret for a numerical control lathe, in particular to an odd-number tool position servo turret.
Background
With the rapid development of the machining and manufacturing industry, the numerical control machine serves as an important device for machining, the requirements on the precision, the performance and the production efficiency of the numerical control machine are continuously improved due to the development of industrial automation, and a double-spindle turning center and a double-spindle turning and milling composite machining center are derived from the machine industry at present. The double-spindle turning center is equivalent to two numerically controlled lathes which are combined into a whole, and has the advantages of small relative occupied area, capability of simultaneously processing two workpieces, improvement of production efficiency by matching with automatic feeding and discharging and the like. The double-spindle turning and milling combined machining center is equivalent to the combination of a numerical control lathe and a machining center, realizes combined machining, combines several different machining processes on a machine tool for machining, saves clamping time, reduces clamping error accumulation, and improves production efficiency and quality of machined parts. Both of these machines can implement turning, and the turret, which is an important component of a numerically controlled machine tool, is essential to both of these machines. At present, the common knife positions of the knife tower are even knife positions such as 4 knife positions, 6 knife positions, 8 knife positions, 12 knife positions and the like.
The double-spindle turning center is provided with two spindles and two tool turrets, and each tool turret corresponds to one spindle respectively for turning. The advantage is that a machine tool can process two parts simultaneously. The machine tool has the advantages that one machine tool is provided with two tool turrets, the occupied area is relatively large, two sets of tools need to be arranged, two sets of saddles, linear rails, lead screws, motors, control systems, cooling systems and the like are needed while the two sets of tool turrets are installed on the machine tool, when one main shaft is used for machining a workpiece, and the other main shaft is used for clamping the workpiece, one tool turret is idle, the machine tool cost and the use cost are increased, and the resource waste is caused.
The double-spindle turning and milling combined machining center is provided with two spindles, two tool turrets and a milling shaft, wherein each tool turret corresponds to one spindle for turning, and one milling shaft corresponds to two spindles for milling. The advantage is that the turning can be carried out simultaneously for both spindles. The milling machine tool has the advantages that when two main shafts are used for machining simultaneously, one milling shaft or one cutter tower is idle, the occupied area of the two cutter towers on one machine tool is relatively large, two sets of cutters need to be arranged, one set of cutter tower, a saddle, a linear rail, a lead screw, a motor, a system control system, a cooling system and the like are added to the machine tool, when one main shaft is used for machining and the other main shaft clamps a workpiece, only one cutter tower and one milling shaft work, the other two cutter towers are idle, the machine tool cost and the use cost are increased, and the resource waste is caused.
In these years, the demand of the automation industry is strong, and the requirements of machine tools on cost, efficiency and reliability are high. The turret, as a component of the machine tool, must keep up with the development demands for structure and function. The two machine tools are provided with the double tool turrets, the same resource waste can be caused under different working conditions, and the two main shafts can not work by adopting one tool turret respectively. If a cutter tower with even cutter positions is adopted, the cutter at the opposite cutter positions interferes with a machined workpiece, and the left cutter position and the right cutter position cannot be switched by cooling water. The defects and advantages of the structures are obvious, the requirements of the market cannot be well met, and the cutter tower which is low in cost, reliable in performance, high in efficiency and capable of meeting the automatic requirements is urgently needed. In view of this, the invention provides an odd-number tool position servo turret, which is used under the working condition of double spindles, so that the resource utilization rate is maximized and the efficiency is improved.
Disclosure of Invention
The invention aims to solve the technical problem that the servo turret with odd cutter positions is provided aiming at the defects of the prior art, has simple structure, excellent performance and simple and convenient operation, can be applied to a double-spindle turning center and a double-spindle turning and milling combined machining center, saves the space of a machine tool, the cost of the machine tool and the cost of a cutter, greatly improves the production efficiency, and avoids the problem that the cutter and a cutter holder at the opposite position of the current cutter position interfere with a machined workpiece.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an odd number sword position servo turret, includes box, turret main shaft, blade disc, trigeminy fluted disc and servo motor, turret main shaft and servo motor install respectively in the box, the blade disc rotationally install the front end of box, the trigeminy fluted disc include movable fluted disc, fixed fluted disc and piston tooth, the piston tooth with fixed fluted disc establish around respectively the outside of turret main shaft, the turret main shaft with the piston tooth between be equipped with annular first hydraulic pressure chamber and second hydraulic pressure chamber, the fixed fluted disc be fixed in the box, the rear end of piston tooth with the front end meshing of fixed fluted disc, the movable fluted disc set up the outside of fixed fluted disc, the movable fluted disc with servo motor's output meshing, the blade disc with movable fluted disc fixed connection, the cutter head cooling mechanism is arranged in the box body, an odd number of cutter positions used for installing cutters are arranged on the cutter head, and the odd number of cutter positions are arranged at equal intervals along the circumferential direction of the cutter head.
The invention breaks through the design of the conventional even-number tool positions of the servo turret, adopts the odd-number tool positions, has simple structure and excellent performance, and can be applied to the double-spindle turning center and the double-spindle turning and milling composite machining center. When the tool turret is used, the original two tool turrets of the double-spindle turning center or the double-spindle turning and milling combined machining center can be directly replaced by the odd-number tool position servo tool turret, and the odd-number tool position servo tool turret can be respectively matched with two machine tool spindles of the double-spindle turning center or the double-spindle turning and milling combined machining center for turning through left and right switching of machining stations. After the odd-number cutter-position servo cutter tower is adopted by the double-spindle turning center and the double-spindle turning and milling combined machining center, a set of cutter tower, a saddle, a linear rail, a lead screw, a motor, a control system, a cooling system and the like can be saved, the machine tool space and the machine tool cost are saved, only a set of cutters needs to be equipped, and the cutter cost is saved.
When the odd-number tool position servo tool turret is applied to a double-spindle turning center, one machine tool spindle processes a workpiece, the other machine tool spindle clamps the workpiece, and the odd-number tool position servo tool turret is always in a working state, so that the working beat can be effectively saved, and the production efficiency is improved.
When the odd-number-of-tool-position servo turret is applied to a double-spindle turning and milling combined machining center, one machine tool spindle is matched with a milling shaft to mill a workpiece, the other machine tool spindle is matched with the odd-number-of-tool-position servo turret to turn the workpiece, and the odd-number-of-tool-position servo turret and the milling shaft are simultaneously in a working state, so that the working beat can be effectively saved, and the production efficiency is improved.
In addition, when the odd-number cutter position servo turret is applied to a double-spindle turning center or a double-spindle turning and milling combined machining center, in the process of machining a workpiece, because the opposite side of the current cutter position is the middle position of two adjacent cutter positions, compared with an even-number cutter position turret, the problem that a cutter and a cutter holder at the opposite side of the current cutter position interfere with the machined workpiece is solved; when the servo turret with odd cutter positions switches the current cutter position left and right, the cutter head only needs to rotate by half cutter position (namely, the cutter head rotates by half of the included angle between two adjacent cutter positions), so that the operation is simple and convenient, and the production efficiency can be greatly improved.
Preferably, the number of the knife positions is 3, 5, 9 or 15. The number of the knife bits can be completely removed by 360, so that the fixed-angle rotation is convenient to realize.
Preferably, the cutter head cooling mechanism comprises two communicated water outlet shafts, the two water outlet shafts are arranged in bilateral symmetry and are respectively installed in the box body in a floating mode, an annular third hydraulic cavity is arranged between each water outlet shaft and the box body, a spring is sleeved on the outer side of each water outlet shaft, a first water through hole is formed in the box body, the inlet end of the first water through hole is communicated with an external water pipe, the outlet end of the first water through hole is communicated with the inlet end of one water outlet shaft, odd-number second water through holes are formed in the cutter head, each second water through hole penetrates through the cutter head in an axial direction, one second water through hole is correspondingly formed in each cutter head, the cutter head rotates to any one cutter head to process, the cutter head is the current cutter head, and the second water through hole corresponding to the current cutter head is aligned with the outlet end of one water outlet shaft and is communicated with the outlet end of the water outlet shaft And the water outlet end of the other water outlet shaft is blocked by the cutter head. The design of the two water outlet shafts can be matched with the servo tool turret with odd tool positions to switch the current tool positions left and right, so that the spray cooling effect on the tool is ensured, and the positions of cooling liquid are synchronously switched while the cutter head rotates, so that the production efficiency is ensured.
Furthermore, a first base plate and a second base plate are arranged between the cutter disc and the cutter disc cooling mechanism, the first base plate and the second base plate are respectively fixed on the cutter disc, odd-numbered first through holes and odd-numbered second through holes are respectively formed in the first base plate and the second base plate, each second water through hole is sequentially corresponding to and communicated with one first through hole and one second through hole, when the cutter disc rotates to any cutter position for processing, the front end surfaces of the two water outlet shafts are respectively attached to the second base plate, the second water through hole corresponding to the current cutter position is aligned to and communicated with the outlet end of one water outlet shaft through one first through hole and one second through hole, and the water outlet end of the other water outlet shaft is blocked by the second base plate; when the cutter head rotates, the two water outlet shafts are respectively separated from the second base plate, and the rear ends of the water outlet shafts communicated with the second water through openings corresponding to the current cutter positions block the outlet ends of the first water through openings. The design of the first base plate and the second base plate is beneficial to improving the assembly precision of parts and ensuring the liquid spraying cooling effect.
Furthermore, each water outlet shaft is arranged in a shaft sleeve, the shaft sleeve is arranged in the box body, the third hydraulic cavity is arranged between the water outlet shaft and the shaft sleeve, the spring is arranged on the inner side of the shaft sleeve, and the front end of each water outlet shaft is provided with a rubber sealing sleeve. The design of the shaft sleeve is convenient for the assembly and the replacement of the water outlet shaft. The rubber sealing sleeve can play a role in sealing the front end, avoid the abrasion of the water outlet shaft and prolong the service life of the water outlet shaft.
Compared with the prior art, the invention has the following advantages:
(1) the odd-number cutter position servo cutter tower breaks through the conventional design of even-number cutter positions of the servo cutter tower, adopts the odd-number cutter positions, has simple structure and excellent performance, and can be applied to a double-spindle turning center and a double-spindle turning and milling composite machining center; after the odd-number cutter-position servo cutter tower is adopted by the double-spindle turning center and the double-spindle turning and milling combined machining center, a set of cutter tower, a saddle, a linear rail, a lead screw, a motor, a control system, a cooling system and the like can be saved, the machine tool space and the machine tool cost are saved, and only one set of cutter needs to be equipped, so that the cutter cost is saved;
(2) when the odd-number cutter position servo turret is applied to a double-spindle turning center or a double-spindle turning and milling combined machining center, in the process of machining a workpiece, because the opposite side of the current cutter position is the middle position of two adjacent cutter positions, compared with an even-number cutter position turret, the problem that a cutter and a cutter holder at the opposite side of the current cutter position interfere with the machined workpiece is solved;
(3) when the servo turret with odd cutter positions switches the current cutter position left and right, the cutter can be rotated by half a cutter position (namely, the cutter rotates by half the included angle between two adjacent cutter positions), the operation is simple and convenient, and the production efficiency can be greatly improved.
Drawings
FIG. 1 is a front view of an odd-numbered tool position servo turret in an embodiment;
FIG. 2 is a cross-sectional view taken along line I-I of FIG. 1;
FIG. 3 is an enlarged view taken at K in FIG. 2;
FIG. 4 is a cross-sectional view taken along line J-J of FIG. 1;
FIG. 5 is a schematic diagram of an embodiment of an odd-numbered turret in a dual spindle turning and milling machining center.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The servo tool tower with odd tool positions of the embodiment comprises a box body 1, a tool tower main shaft 2, a tool disc 3, a triple fluted disc and a servo motor 44, wherein the tool tower main shaft 2 and the servo motor 44 are respectively installed in the box body 1, the tool disc 3 is rotatably installed at the front end of the box body 1, the triple fluted disc comprises a movable fluted disc 41, a fixed fluted disc 42 and a piston tooth 43, the piston tooth 43 and the fixed fluted disc 42 are respectively sleeved at the outer side of the tool tower main shaft 2 in a front-back mode, an annular first hydraulic cavity 21 and an annular second hydraulic cavity 22 are arranged between the tool tower main shaft 2 and the piston tooth 43, the fixed fluted disc 42 is fixed on the box body 1, the rear end of the piston tooth 43 is meshed with the front end of the fixed fluted disc 42, the movable fluted disc 41 is arranged at the outer side of the fixed fluted disc 42, the movable fluted disc 41 is meshed with the output end of the servo motor 44, the tool disc 3 is fixedly connected with the movable fluted disc 41, a tool disc cooling mechanism is arranged in the box body 1, 9 tool positions 31 for installing tools are arranged on the tool 3, the 9 cutter positions 31 are arranged at equal intervals along the circumferential direction of the cutter head 3.
In this embodiment, the cutter head cooling mechanism includes two communicated water outlet shafts 5, the two water outlet shafts 5 are arranged in bilateral symmetry and are respectively installed in the box body 1 in a floating manner, an annular third hydraulic cavity 51 is arranged between each water outlet shaft 5 and the box body 1, a spring 52 is sleeved on the outer side of each water outlet shaft 5, specifically, each water outlet shaft 5 is installed in a shaft sleeve 53, the shaft sleeve 53 is installed in the box body 1, the third hydraulic cavity 51 is arranged between the water outlet shaft 5 and the shaft sleeve 53, the spring 52 is arranged on the inner side of the shaft sleeve 53, and a rubber sealing sleeve 54 is installed at the front end of each water outlet shaft 5; the box body 1 is provided with a first water through opening 11, the inlet end of the first water through opening 11 is communicated with an external water pipe, the outlet end of the first water through opening 11 is communicated with the inlet end of a water outlet shaft 5, the cutter head 3 is provided with 9 second water through openings 32, each second water through opening 32 penetrates through the axial direction of the cutter head 3, and each cutter position 31 is correspondingly provided with one second water through opening 32.
In this embodiment, a first shim plate 33 and a second shim plate 34 are arranged between the cutter head 3 and the cutter head cooling mechanism, the first shim plate 33 and the second shim plate 34 are respectively fixed to the cutter head 3, 9 first through holes 35 and 9 second through holes 36 are respectively formed in the first shim plate 33 and the second shim plate 34, and each second through hole 32 corresponds to and communicates with one first through hole and 35 one second through hole 36 in sequence.
The odd-number cutter position servo turret can be applied to a double-spindle turning center and a double-spindle turning and milling combined machining center. When the tool turret is used, the original two tool turrets of a double-spindle turning center or a double-spindle turning and milling combined machining center can be directly replaced by the odd-number tool position servo tool turret.
Taking the application of the odd-numbered tool turret in a dual spindle turning and milling combined machining center as an example, fig. 5 is a schematic view of a use state of the odd-numbered tool turret. One machine tool spindle A is matched with the milling spindle to mill a workpiece, the other machine tool spindle B is matched with the odd-number cutter-position servo cutter tower to turn the workpiece, and the odd-number cutter-position servo cutter tower C and the milling spindle D are in a working state at the same time, so that working beats can be effectively saved, and the production efficiency is improved.
In the working process, after the triple fluted disc is released hydraulically, the movable fluted disc 41 drives the cutter disc 3 to rotate and index under the drive of the servo motor 44, when the cutter disc 3 rotates to the right position and is machined at any cutter position 31, the cutter position 31 is the current cutter position, the triple fluted disc is clamped hydraulically, the cutter disc 3 is clamped, and simultaneously two water outlet shafts 5 are pushed hydraulically, so that the front end surfaces of the two water outlet shafts 5 are respectively attached to the second backing plate 34, the second water through hole 32 corresponding to the current cutter position is aligned and communicated with the outlet end of one water outlet shaft 5 through a first through hole 35 and a second through hole 36, and the water outlet end of the other water outlet shaft 5 is blocked by the second backing plate 34. When the cutter head 3 rotates, the two springs 52 respectively push the two water outlet shafts 5, so that the two water outlet shafts 5 are respectively separated from the second backing plate 34, and the rear ends of the water outlet shafts 5 communicated with the second water through openings 32 corresponding to the current cutter position are blocked at the outlet ends of the first water through openings 11.
The odd-number cutter position servo turret can be used for switching the machining stations left and right. The two water outlet shafts 5 are arranged in bilateral symmetry and communicated, and the same external water pipe is adopted for water inlet. When the station on the left side of the turret is taken as the positive tool position for processing, the positive tool position is the current tool position, the current tool position is over against the left side of the turret, the opposite side of the current tool position is the middle position of two adjacent tool positions 31 on the right side, and the tool changing can be realized by the station on the left side of the turret when the servo motor 44 rotates one tool position 31 (namely, the angle of the included angle between the two adjacent tool positions 31 is rotated, in the embodiment, the angle is 40 °). When the station on the right side of the turret needs to be switched to be the positive cutter position, the servo motor 44 drives the cutter head 3 to rotate by half the cutter position (i.e. rotate by an angle which is half of the included angle between two adjacent cutter positions 31, in this embodiment, the angle is 20 °), at this time, the station on the right side of the turret becomes the positive cutter position, and the opposite side of the positive cutter position is the middle position of two adjacent cutter positions 31 on the left side.
When the station on the left side of the cutter tower is taken as the positive cutter position for processing, the water outlet shaft 5 on the left side of the cutter tower is aligned with the second water through opening 32 corresponding to the current cutter position for liquid spraying, and the water outlet shaft 5 on the right side of the cutter tower is not attached to the second backing plate 34 for water spraying. When the station on the right side of the turret is taken as the positive cutter position, the water outlet shaft 5 on the right side of the turret is aligned with the second water through opening 32 corresponding to the current cutter position for liquid spraying, and the water outlet shaft 5 on the left side of the turret is not attached to the second backing plate 34 for water spraying.
Claims (5)
1. The utility model provides an odd number sword position servo turret, includes box, turret main shaft, blade disc, trigeminy fluted disc and servo motor, turret main shaft and servo motor install respectively in the box, the blade disc rotationally install the front end of box, the trigeminy fluted disc include movable fluted disc, fixed fluted disc and piston tooth, the piston tooth with fixed fluted disc establish around respectively the outside of turret main shaft, the turret main shaft with the piston tooth between be equipped with annular first hydraulic pressure chamber and second hydraulic pressure chamber, the fixed fluted disc be fixed in the box, the rear end of piston tooth with the front end meshing of fixed fluted disc, the movable fluted disc set up the outside of fixed fluted disc, the movable fluted disc with servo motor's output meshing, the blade disc with movable fluted disc fixed connection, the cutter head cooling mechanism is arranged in the box body and is characterized in that the cutter head is provided with odd cutter positions for mounting cutters, and the odd cutter positions are distributed at equal intervals along the circumferential direction of the cutter head.
2. The odd-numbered tool position servo turret according to claim 1, wherein the number of tool positions is 3, 5, 9 or 15.
3. The odd-number cutter-position servo turret according to claim 1, wherein the cutter cooling mechanism comprises two communicating water outlet shafts, the two water outlet shafts are arranged in bilateral symmetry and are respectively installed in the box body in a floating manner, an annular third hydraulic cavity is arranged between each water outlet shaft and the box body, a spring is sleeved outside each water outlet shaft, the box body is provided with a first water through hole, the inlet end of the first water through hole is communicated with an external water pipe, the outlet end of the first water through hole is communicated with the inlet end of one water outlet shaft, the cutter is provided with odd-number second water through holes, each second water through hole penetrates through the cutter in the axial direction, each cutter is correspondingly provided with one second water through hole, and the cutter rotates to any one cutter position for machining, the cutter position is the current cutter position, the second water through port corresponding to the current cutter position is aligned and communicated with the outlet end of one water outlet shaft, and the water outlet end of the other water outlet shaft is blocked by the cutter head.
4. The odd-numbered tool position servo turret according to claim 3, wherein a first shim plate and a second shim plate are arranged between said cutter head and said cutter head cooling mechanism, the first base plate and the second base plate are respectively fixed on the cutter head, odd number of first through holes and odd number of second through holes are respectively arranged on the first base plate and the second base plate, each second water through hole is sequentially corresponding to and communicated with one first through hole and one second through hole, when the cutter head rotates to any one cutter position for processing, the front end surfaces of the two water outlet shafts are respectively attached to the second base plate, a second water through hole corresponding to the current cutter position is aligned and communicated with the outlet end of one water outlet shaft through a first through hole and a second through hole, and the water outlet end of the other water outlet shaft is blocked by the second base plate; when the cutter head rotates, the two water outlet shafts are respectively separated from the second base plate, and the rear ends of the water outlet shafts communicated with the second water through openings corresponding to the current cutter positions block the outlet ends of the first water through openings.
5. The odd-number-cutter-position servo turret according to claim 3, wherein each water outlet shaft is mounted in a shaft sleeve, the shaft sleeve is mounted in the box body, the third hydraulic cavity is arranged between the water outlet shaft and the shaft sleeve, the spring is arranged on the inner side of the shaft sleeve, and a rubber sealing sleeve is mounted at the front end of each water outlet shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210086237.0A CN114346275B (en) | 2022-01-25 | 2022-01-25 | Odd-number cutter-position servo cutter tower |
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| CN202210086237.0A CN114346275B (en) | 2022-01-25 | 2022-01-25 | Odd-number cutter-position servo cutter tower |
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| CN114346275A true CN114346275A (en) | 2022-04-15 |
| CN114346275B CN114346275B (en) | 2023-07-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114603169A (en) * | 2022-04-19 | 2022-06-10 | 宁夏乔锋机械制造有限公司 | Direct-connected anti-pollution high-pressure power tool turret |
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