CN111390537A - Mechanical spindle dismounting platform - Google Patents

Mechanical spindle dismounting platform Download PDF

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Publication number
CN111390537A
CN111390537A CN202010295464.5A CN202010295464A CN111390537A CN 111390537 A CN111390537 A CN 111390537A CN 202010295464 A CN202010295464 A CN 202010295464A CN 111390537 A CN111390537 A CN 111390537A
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CN
China
Prior art keywords
movable baffle
bearing base
baffle
axis
clamping mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010295464.5A
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Chinese (zh)
Inventor
费亚
龚飞
李鑫
张锐扬
汪强
冯崎
李颖
张云
贺毅
王强军
刘宽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Aircraft Industrial Group Co Ltd
Original Assignee
Chengdu Aircraft Industrial Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Aircraft Industrial Group Co Ltd filed Critical Chengdu Aircraft Industrial Group Co Ltd
Priority to CN202010295464.5A priority Critical patent/CN111390537A/en
Publication of CN111390537A publication Critical patent/CN111390537A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/027Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means

Abstract

The invention relates to the technical field of mechanical spindle dismounting and mounting, and discloses a mechanical spindle dismounting and mounting platform which comprises a bearing base station, a clamping mechanism and a pressing mechanism, wherein the clamping mechanism and the pressing mechanism are respectively arranged on the bearing base station and are arranged along an X axis; the pressing mechanism comprises a movable baffle which is slidably mounted on the bearing base platform and can move along the X axis, and a force application device which is slidably mounted on one side of the movable baffle, close to the clamping mechanism, and moves along the Z axis. The invention has the beneficial effects that: the invention aims to solve the problems that the dismounting process is time-consuming and labor-consuming, the adaptability is poor and irreversible damage is easily caused to the precision parts of the main shaft in the dismounting process of the traditional mechanical main shaft, quickly and stably complete the dismounting task of the mechanical main shafts with various sizes and improve the maintenance efficiency.

Description

Mechanical spindle dismounting platform
Technical Field
The invention relates to the technical field of mechanical spindle dismounting, in particular to a mechanical spindle dismounting platform.
Background
The main shaft is an indispensable core functional component for the operation of a machine tool, and the performance of the main shaft directly influences the processing quality of parts. With the rapid development of science and technology, the main shaft has been gradually advanced in the direction of serialization and standardization, and the application of the main shaft is more mature and deep.
The mechanical spindle is the most widely applied spindle type, and is widely applied in the machining field due to large torque, high machining precision, stable operation, uniform structure and high standardization degree. The fault handling of mechanical main shaft usually needs to carry out the dismouting to the main shaft, and under its free state, the inside dish spring of main shaft can produce very big extrusion force to the cutter arbor that draws for the screw thread department of screw thread back of the body cap is pressed and is locked, therefore dismantles and repacks the in-process to mechanical main shaft, dismantles very difficultly through the mode of directly twisting screw thread back of the body cap to mechanical main shaft. In addition, in engineering practice, because the mechanical main shaft has large mass, a complex mechanical structure and high component precision, the traditional dismounting method generally adopts a universal tool for dismounting, the dismounting process is time-consuming and labor-consuming, and the precision components of the main shaft are extremely easy to damage irreversibly, the main shafts with different sizes need dismounting tools with various models and sizes, on one hand, the maintenance technical requirements of maintenance personnel are very strict, on the other hand, higher requirements are provided for the adaptability of the dismounting tools, and the requirements bring great difficulty to engineering technicians for repairing the main shaft, so that the current dismounting situation of the mechanical main shaft can not meet the increasing fault maintenance requirements.
Disclosure of Invention
The invention aims to provide a mechanical spindle dismounting platform, which aims to solve the problems that the dismounting process is time-consuming and labor-consuming, the adaptability is poor and the irreversible damage is easily caused to precision parts of a spindle in the traditional mechanical spindle dismounting process, quickly and stably complete the dismounting task of mechanical spindles with various sizes and improve the maintenance efficiency.
The invention is realized by the following technical scheme:
a mechanical spindle dismounting platform comprises a bearing base station, a clamping mechanism and a pressing mechanism, wherein the clamping mechanism and the pressing mechanism are respectively arranged on the bearing base station and are arranged along an X axis; the pressing mechanism comprises a movable baffle which is slidably mounted on the bearing base platform and can move along the X axis, and a force application device which is slidably mounted on one side of the movable baffle, close to the clamping mechanism, and moves along the Z axis.
Furthermore, in order to better realize the invention, the clamping mechanism comprises two clamping seats which have the same structure and are symmetrically arranged along the X-axis direction, and connecting bolts which are respectively connected with the two clamping seats; one side, close to each other, of each of the two clamping seats is provided with a V-shaped groove and a cavity for mounting a mechanical spindle is formed; one side of one of the clamping seats, which is far away from the V-shaped groove, is arranged on the bearing base platform.
Furthermore, in order to better realize the invention, a first T-shaped groove is arranged on the bearing base platform, and a first T-shaped boss matched with the first T-shaped groove is arranged on one side of the movable baffle close to the bearing base platform; the movable baffle is connected with the bearing base platform through an A bolt.
Further, in order to better realize the invention, a second T-shaped groove is formed in one side, close to the force application device, of the movable baffle, the force application device is provided with a second T-shaped boss matched with the second T-shaped groove, and the force application device is connected with the movable baffle through a bolt B.
Furthermore, in order to better implement the invention, a fixed baffle plate arranged in parallel with the movable baffle plate is further installed on the bearing base platform, and the fixed baffle plate is positioned on one side of the clamping mechanism far away from the movable baffle plate.
Further, in order to better realize the invention, the fixed baffle and the movable baffle are connected through an axial bearing connecting rod arranged along the X axis; the axial bearing connecting rods are two and are positioned at two sides of the clamping mechanism.
Furthermore, in order to better realize the invention, the movable baffle is provided with a hinge lug connected with the axial bearing connecting rod; the fixed baffle is provided with a U-shaped groove for installing an axial bearing connecting rod; a locking nut is arranged on the axial bearing connecting rod; the locking nut is positioned on one side of the fixed baffle, which is far away from the movable baffle.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention adopts the pressing mechanism for disassembly, does not generate the loading of eccentric force, and has more stable and uniform force application compared with the traditional manual pulling mode;
(2) according to the size of the main shaft, the centering and alignment can be completed by simply adjusting the positions of the movable baffle and the hydraulic pressure applying device, and then the hydraulic pressure applying device is started, so that the whole process is simple and easy to implement, and an obvious efficiency improving effect is achieved;
(3) compared with the traditional manual force application mode, the invention adopts a mechanical force application mode to release the extrusion force of the disc spring, thereby reducing the manual disassembly and assembly operation proportion and improving the operation condition;
(4) the invention has simple structure and strong practicability, effectively improves the working efficiency and avoids the damage to the mechanical main shaft caused by manual disassembly and assembly.
Drawings
FIG. 1 is a schematic view of the overall mechanism of the present invention;
FIG. 2 is a schematic structural view of a load-bearing platform according to the present invention;
FIG. 3 is a schematic view of a clamping mechanism of the present invention clamping a mechanical spindle;
FIG. 4 is a schematic structural view of a pressing mechanism according to the present invention;
FIG. 5 is a schematic view of the structure of the movable baffle of the present invention;
wherein 1, a bearing base station; 11. a first T-shaped groove; 2. moving the baffle; 21-a first T-shaped boss; 22. a second T-shaped groove; 3. fixing a baffle plate; 4. an axial load bearing link; 5. a pressure applying mechanism; 51. a second T-shaped boss; 6. a clamping seat; 8. a mechanical spindle; 9. the screw thread is carried the cap.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
the invention is realized by the following technical scheme, as shown in figures 1-5, a mechanical spindle dismounting platform comprises a bearing base platform 1, a clamping mechanism and a pressure mechanism 5, wherein the clamping mechanism and the pressure mechanism are respectively arranged on the bearing base platform 1 and are arranged along an X axis; the pressing mechanism 5 comprises a movable baffle 2 which is slidably mounted on the bearing base platform 1 and can move along the X axis, and a force application device which is slidably mounted on one side of the movable baffle 2 close to the clamping mechanism and moves along the Z axis.
It should be noted that, through the above improvement, when in use, the bearing base table 1 is fixed on the workbench, the mechanical spindle 8 is clamped by the clamping mechanism, and the to-be-dismounted part of the mechanical spindle 8 is located at one side close to the pressing mechanism 5, after the mechanical spindle 8 is clamped in place, the pressing mechanism 5 is controlled to move along the Z-axis direction according to the height of the to-be-dismounted part relative to the bearing base table 1, so that the acting force output end of the pressing mechanism 5 and the to-be-dismounted part are located on the same straight line, then the pressing mechanism 5 and the movable baffle 2 are fixed, so that the pressing mechanism 5 cannot slide on the movable baffle 2, and then the movable baffle 2 and the pressing mechanism 5 are controlled to move to one side close to the clamping mechanism, so that the acting force output end of the pressing mechanism 5 can apply acting force to the to.
When the tool is disassembled, the pressing mechanism 5 is controlled to apply acting force to the disassembling part, and the extrusion force of the disc spring in the mechanical main shaft 8 on the broaching tool rod is released, so that the threaded back cap 9 connected with the broaching tool rod can be easily disassembled and reassembled, and the implementation purpose of the tool is achieved.
The pressing mechanism 5 is adopted for dismounting, the loading of eccentric force cannot be generated, and the force application is more stable and uniform compared with the traditional manual pulling mode.
According to the size of the main shaft, the centering and alignment can be completed by simply adjusting the positions of the movable baffle 2 and the hydraulic pressure applying device, and then the hydraulic pressure applying device is started, so that the whole process is simple and easy to implement, and an obvious efficiency improving effect is achieved;
compared with the traditional manual force application mode, the invention adopts a mechanical force application mode to release the extrusion force of the disc spring, thereby reducing the manual disassembly and assembly operation proportion and improving the operation condition.
Preferably, the pressure applying device is a hydraulic force applying device, the end of one end of the pressure applying device, which is close to the mechanical main shaft 8, is a hydraulic piston rod, and the cylindrical piston cavity in the middle part is matched with the hydraulic piston rod.
Example 2:
the present embodiment is further optimized on the basis of the above embodiments, as shown in fig. 1 and fig. 3, further, in order to better implement the present invention, the clamping mechanism includes two clamping seats 6 which have the same structure and are symmetrically arranged along the X-axis direction, and connecting bolts respectively connected to the two clamping seats 6; one side, close to each other, of each of the two clamping seats 6 is provided with a V-shaped groove and forms a cavity for mounting a mechanical main shaft 8; one side of one of the clamping seats 6, which is far away from the V-shaped groove, is arranged on the bearing base platform 1.
It should be noted that, through the above improvement, the openings of the two V-shaped grooves are symmetrically arranged along the X-axis, the two clamping seats 6 form a chamber for installing the mechanical spindle 8, and the distance between the bottoms of the two V-shaped grooves is smaller than the outer diameter of the mechanical spindle 8; after the mechanical main shaft 8 is installed in the cavity, the two clamping seats 6 are connected through the connecting bolt, and the side faces of the two V-shaped grooves tightly support the outer side of the mechanical main shaft 8, so that the mechanical main shaft 8 is clamped.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 3:
the present embodiment is further optimized on the basis of the above embodiments, as shown in fig. 1, fig. 2, and fig. 5, further, in order to better implement the present invention, a first T-shaped groove 11 is provided on the bearing base platform 1, and a first T-shaped boss 21 used in cooperation with the first T-shaped groove 11 is provided on one side of the movable baffle 2 close to the bearing base platform 1; the movable baffle 2 is connected with the bearing base platform 1 through an A bolt.
It should be noted that, through the above improvement, the first T-shaped groove 11 and the first T-shaped boss 21 cooperate with each other to realize the movement of the movable baffle 2 on the bearing base 1, after the movable baffle 2 moves to a specified position, the movable baffle 2 and the bearing base 1 are connected through the a bolt, so that the movable baffle 2 and the bearing base 1 are fixed to each other, and when the pressing mechanism 5 applies an acting force, the movable stopper does not move along the first T-shaped groove 11.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 4:
the present embodiment is further optimized on the basis of the above embodiment, as shown in fig. 1, and further, in order to better implement the present invention, a second T-shaped groove 22 is disposed on one side of the movable baffle 2 close to the force applying device, the force applying device is provided with a second T-shaped boss 51 used in cooperation with the second T-shaped groove 22, and the force applying device is connected with the movable baffle 2 through a B bolt.
It should be noted that, with the above modification, the second T-shaped groove 22 and the second T-shaped boss 51 are matched with each other to adjust the position of the pressing mechanism 5 relative to the bearing base 1 according to the distance from the axis of the machine spindle 8 in the X-axis direction to the bearing base 1; therefore, the device can be used for disassembling the mechanical main shafts 8 with different diameters, and the application range is wide.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 5:
in this embodiment, a further optimization is performed on the basis of the above embodiment, as shown in fig. 1, and further, in order to better implement the present invention, a fixed baffle 3 arranged in parallel with the movable baffle 2 is further installed on the bearing base 1, and the fixed baffle 3 is located on a side of the clamping mechanism away from the movable baffle 2.
It should be noted that, through the above improvement, the purpose of providing the fixed baffle 3 is to strengthen the abutment of the machine spindle 8 in the X direction, and avoid that the machine spindle 8 moves along the X axis when the pressing mechanism 5 is acting, so that the machine spindle 8 cannot be effectively detached. In the implementation dismantlement process, treat that the mechanical main shaft 8 of dismouting places between in the cavity, according to the size of a dimension of main shaft, adjustment moving baffle 2, pressure device's position, guarantee that pressure device's axis is parallel with the main shaft axis, make hydraulic pressure force application device's piston rod exert the axis force to mechanical main shaft 8 through hydraulic drive's mode, release the inside disc spring of main shaft to the extrusion force that the pine broach pole produced, make it can easily dismantle and repack with the screw back cap 9 that the pine broach pole links to each other, greatly increased the convenience of main shaft dismouting process.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
Example 6:
the present embodiment is further optimized on the basis of the above-mentioned embodiment, as shown in fig. 1, and further, in order to better implement the present invention, the fixed baffle 3 and the movable baffle 2 are connected by an axial bearing link 4 arranged along the X-axis; the two axial bearing connecting rods 4 are positioned at two sides of the clamping mechanism.
The present embodiment is further optimized on the basis of the above embodiment, as shown in fig. 1, and further, in order to better implement the present invention, a hinge tab connected with the axial bearing link 4 is arranged on the movable baffle 2; the fixed baffle 3 is provided with a U-shaped groove for installing the axial bearing connecting rod 4; a locking nut is arranged on the axial bearing connecting rod 4; the locking nut is positioned on one side of the fixed baffle 3, which is far away from the movable baffle 2.
It should be noted that, with the above improvement, one end of the axial bearing connecting rod 4 is mounted on the hinge lug of the movable baffle 2 through the bolt, and then the axial bearing connecting rod 4 is rotated with the bolt as a rotation center to be embedded into the U-shaped groove of the fixed baffle 3, and is connected and matched with the fixed baffle 3 by adopting the pre-tightening nut. The axial bearing connecting rod 4 fixes the positions of the fixed baffle 3 and the movable baffle 2 after adjustment, so that the movable baffle 2 is further prevented from moving along the X-axis direction during work.
Other parts of this embodiment are the same as those of the above embodiment, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (7)

1. The utility model provides a machinery main shaft dismouting platform which characterized in that: comprises a bearing base platform (1), a clamping mechanism and a pressing mechanism (5), wherein the clamping mechanism and the pressing mechanism are respectively arranged on the bearing base platform (1) and are arranged along an X axis; the pressing mechanism (5) comprises a movable baffle (2) which is slidably mounted on the bearing base platform (1) and can move along the X axis, and a force application device which is slidably mounted on one side, close to the clamping mechanism, of the movable baffle (2) and moves along the Z axis.
2. The mechanical spindle dismounting platform according to claim 1, characterized in that: the clamping mechanism comprises two clamping seats (6) which have the same structure and are symmetrically arranged along the X-axis direction, and connecting bolts which are respectively connected with the two clamping seats (6); one side, close to each other, of each of the two clamping seats (6) is provided with a V-shaped groove, and a cavity for mounting a mechanical spindle (8) is formed; one side of one of the clamping seats (6) far away from the V-shaped groove is arranged on the bearing base platform (1).
3. The mechanical spindle dismounting platform according to claim 1, characterized in that: a first T-shaped groove (11) is formed in the bearing base platform (1), and a first T-shaped boss (21) matched with the first T-shaped groove (11) is arranged on one side, close to the bearing base platform (1), of the movable baffle (2); the movable baffle (2) is connected with the bearing base platform (1) through an A bolt.
4. The mechanical spindle dismounting platform according to claim 1, characterized in that: one side that removes baffle (2) and be close to force applying device is provided with second T type groove (22), force applying device is provided with second T type boss (51) of using with second T type groove (22) cooperation, force applying device passes through the B bolt and is connected with removal baffle (2).
5. The mechanical spindle dismounting platform according to claim 1, characterized in that: the bearing base station (1) is further provided with a fixed baffle (3) which is parallel to the movable baffle (2), and the fixed baffle (3) is positioned on one side of the clamping mechanism, which is far away from the movable baffle (2).
6. The mechanical spindle dismounting platform according to claim 5, characterized in that: the fixed baffle (3) is connected with the movable baffle (2) through an axial bearing connecting rod (4) arranged along an X axis; the two axial bearing connecting rods (4) are positioned at two sides of the clamping mechanism.
7. The mechanical spindle dismounting platform according to claim 6, characterized in that: the movable baffle (2) is provided with a hinge lug which is connected with the axial bearing connecting rod (4); the fixed baffle (3) is provided with a U-shaped groove for installing the axial bearing connecting rod (4); a locking nut is arranged on the axial bearing connecting rod (4); the locking nut is positioned on one side of the fixed baffle (3) far away from the movable baffle (2).
CN202010295464.5A 2020-04-15 2020-04-15 Mechanical spindle dismounting platform Pending CN111390537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010295464.5A CN111390537A (en) 2020-04-15 2020-04-15 Mechanical spindle dismounting platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010295464.5A CN111390537A (en) 2020-04-15 2020-04-15 Mechanical spindle dismounting platform

Publications (1)

Publication Number Publication Date
CN111390537A true CN111390537A (en) 2020-07-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010295464.5A Pending CN111390537A (en) 2020-04-15 2020-04-15 Mechanical spindle dismounting platform

Country Status (1)

Country Link
CN (1) CN111390537A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU505555A1 (en) * 1974-04-18 1976-03-05 4-Й Государственный Дважды Ордена Ленина Подшипниковый Завод Device for dismantling the press connections of parts
CN102990340A (en) * 2011-09-16 2013-03-27 陈学明 Disassembly tool for main shaft of continuous extruding machine
CN203141058U (en) * 2013-02-28 2013-08-21 河北钢铁股份有限公司承德分公司 Horizontal press capable of assembling and disassembling large-sized workpieces
CN203141064U (en) * 2013-03-20 2013-08-21 武汉钢铁(集团)公司 Hydraulic dismounting device for coiling block sleeving shaft
CN204160159U (en) * 2014-09-24 2015-02-18 上海宝钢工业技术服务有限公司 The attaching/detaching apparatus of large hydraulic cylinder piston rod
CN104956093A (en) * 2013-01-10 2015-09-30 泽普林建筑机械有限公司 Apparatus for the assembly and disassembly of hydraulic cylinders
CN105479141A (en) * 2016-01-19 2016-04-13 长春速建新技术开发有限公司 Hydraulic type bearing detaching and installing device
CN205218465U (en) * 2015-12-24 2016-05-11 河南省黄河防爆起重机有限公司 Stamping device is used in cable reel installation with adjustable height
CN205290309U (en) * 2016-01-06 2016-06-08 湖北合强机械发展股份有限公司 Brake disc preformer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU505555A1 (en) * 1974-04-18 1976-03-05 4-Й Государственный Дважды Ордена Ленина Подшипниковый Завод Device for dismantling the press connections of parts
CN102990340A (en) * 2011-09-16 2013-03-27 陈学明 Disassembly tool for main shaft of continuous extruding machine
CN104956093A (en) * 2013-01-10 2015-09-30 泽普林建筑机械有限公司 Apparatus for the assembly and disassembly of hydraulic cylinders
CN203141058U (en) * 2013-02-28 2013-08-21 河北钢铁股份有限公司承德分公司 Horizontal press capable of assembling and disassembling large-sized workpieces
CN203141064U (en) * 2013-03-20 2013-08-21 武汉钢铁(集团)公司 Hydraulic dismounting device for coiling block sleeving shaft
CN204160159U (en) * 2014-09-24 2015-02-18 上海宝钢工业技术服务有限公司 The attaching/detaching apparatus of large hydraulic cylinder piston rod
CN205218465U (en) * 2015-12-24 2016-05-11 河南省黄河防爆起重机有限公司 Stamping device is used in cable reel installation with adjustable height
CN205290309U (en) * 2016-01-06 2016-06-08 湖北合强机械发展股份有限公司 Brake disc preformer
CN105479141A (en) * 2016-01-19 2016-04-13 长春速建新技术开发有限公司 Hydraulic type bearing detaching and installing device

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Application publication date: 20200710