CN111958337A - Screw tap grinding device - Google Patents
Screw tap grinding device Download PDFInfo
- Publication number
- CN111958337A CN111958337A CN202010708146.7A CN202010708146A CN111958337A CN 111958337 A CN111958337 A CN 111958337A CN 202010708146 A CN202010708146 A CN 202010708146A CN 111958337 A CN111958337 A CN 111958337A
- Authority
- CN
- China
- Prior art keywords
- adjusting
- guide
- workbench
- thimble
- grinding wheel
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/18—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of taps or reamers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
Abstract
The invention provides a tap grinding device, which comprises a base, a workbench, a first ejector pin mechanism, a second ejector pin mechanism, a grinding wheel adjusting mechanism, a power grinding wheel mechanism and a guide rail, the base comprises a plurality of groups of guide seats, each group of guide seats comprises two guide seats, a gap for the movement of the workbench is arranged between the two guide seats, one side of each guide seat, which faces the workbench, is provided with a guide wheel group, the workbench is movably arranged on the guide wheel group, can move along the guide wheel set, a first thimble mechanism and a second thimble mechanism which are symmetrically arranged are arranged on the workbench, a guide rail vertical to the workbench is arranged below the workbench, a grinding wheel adjusting mechanism capable of being adjusted along the length direction of the guide rail is arranged on the guide rail, the grinding wheel adjusting mechanism is provided with a vertical adjusting frame capable of being adjusted in the vertical direction, and the power grinding wheel mechanism is arranged on one side of the vertical adjusting frame. The device is not only efficient, but also easy to realize the standardization of screw tap grinding.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of auxiliary equipment of machine tools, in particular to a screw tap grinding device.
[ background of the invention ]
The screw tap is a tool which is used in a large number in a mechanical manufacturing workshop, and not only has a plurality of specifications, but also has high use frequency. After the screw tap is used for a period of time, the conical surface of the screw tap is worn, so that the screw tap cannot tap along a bottom hole drilled in advance, the threaded hole is inclined, and later screwing-in of a bolt is not facilitated or the end face of the bolt cannot be in good contact with a workpiece. In another case, the tap may be broken due to improper force application by the operator or increased hardness at a certain point of the workpiece material during use. The tap is broken and is wasted if the tap is scrapped.
In both cases, the tap needs to be reground for reuse. The conventional grinding tap is basically ground on a grinding machine manually by a worker according to own experience. The tap is ground in such a way, so that the standard is not met, and the efficiency is low; in addition, during operation, the body part of a worker is close to the grinder rotating at high speed, so that potential safety hazards are easily caused.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a screw tap grinding device which is convenient to operate, can improve grinding efficiency and reduce potential safety hazards.
In order to achieve the purpose, the invention provides a screw tap grinding device, which comprises a base, a workbench, a first ejector pin mechanism, a second ejector pin mechanism, a grinding wheel adjusting mechanism, a power grinding wheel mechanism and a guide rail, wherein the base comprises a plurality of groups of guide seats, each group of guide seats comprises two guide seats symmetrically distributed on two sides of the workbench, a gap for the workbench to move is formed between the two guide seats, a guide wheel group is arranged on one side of each guide seat facing the workbench, the workbench is movably arranged on the guide wheel groups and can move along the guide wheel groups, the workbench is provided with the first ejector pin mechanism and the second ejector pin mechanism which are symmetrically arranged, the guide rail which is vertical to the workbench is arranged below the workbench, the guide rail is provided with the grinding wheel adjusting mechanism which can be adjusted along the length direction of the guide rail, the grinding wheel adjusting mechanism is provided with a vertical adjusting frame which can be adjusted along the vertical direction, and one side of the vertical adjusting frame is provided with the power grinding wheel mechanism.
Preferably, the grinding wheel adjusting mechanism further comprises a movable mounting bracket, a first adjusting screw, an angle adjusting plate and a second adjusting screw, the movable mounting bracket is an L-shaped bracket and comprises a transverse support plate and a vertical support plate, the transverse support plate is movably mounted on the guide rail, one end of the guide rail is provided with an adjusting support, the second adjusting screw rod is arranged on the adjusting support, the end part of the second adjusting screw rod is rotatably connected with the transverse support plate, used for adjusting the position of the movable mounting bracket on the guide rail, a vertical adjusting bracket is movably mounted on the vertical support plate, a first adjusting screw is arranged on the vertical adjusting bracket, the lower end of the first adjusting screw is rotatably connected with the auxiliary bracket on the side wall of the vertical support plate, the height of the vertical adjusting frame is adjusted, and the power grinding wheel mechanism is installed on the vertical adjusting frame through the angle adjusting plate.
Preferably, the angle adjusting plate is an L-shaped support and comprises a grinding wheel mounting frame and a rotary adjusting frame, a plurality of arc-shaped adjusting grooves are formed in the rotary adjusting frame, the rotary adjusting frame is mounted on the vertical adjusting frame through a plurality of adjusting bolts, the adjusting bolts are matched with the arc-shaped adjusting grooves, the power grinding wheel mechanism is mounted on the grinding wheel mounting frame, and a through groove for the power grinding wheel mechanism to penetrate out is formed in the center of the grinding wheel mounting frame.
Preferably, the guide wheel set comprises a longitudinal limit guide wheel and a transverse limit guide wheel, and the axes of the longitudinal limit guide wheel and the transverse limit guide wheel are perpendicular.
Preferably, guide grooves matched with the longitudinal limiting guide wheels are formed in two sides of the upper end face of the workbench, two walking frames are symmetrically arranged below the workbench, idler wheels are symmetrically arranged on two sides of each walking frame, a handle is arranged at one end of the workbench, and a limiting blocking frame used for blocking the guide grooves is arranged at the other end of the workbench.
Preferably, the first thimble mechanism comprises an adjusting mounting seat and a thimble, the thimble is mounted in an internal thread mounting cavity on the adjusting mounting seat, one end of the thimble has an external conical surface, the first thimble mechanism and the second thimble mechanism have the same structure, and the axes of the thimbles on the first thimble mechanism and the second thimble mechanism coincide with each other.
Preferably, the power grinding wheel mechanism comprises a grinding wheel and a motor for driving the grinding wheel to rotate, and the axis of a driving shaft of the motor is perpendicular to the axis of the thimble.
The invention has the beneficial effects that: according to the invention, the screw tap can be well fixed on the workbench by utilizing the first ejector pin mechanism and the second ejector pin mechanism through the matching of the base, the workbench, the first ejector pin mechanism, the second ejector pin mechanism, the grinding wheel adjusting mechanism, the power grinding wheel mechanism and the like. The workbench is assembled on the base and can do linear reciprocating motion along the direction of the thimble under the limitation of the guide wheel set of the base to carry out coping operation. The adjusting mechanism can enable the power grinding wheel mechanism to move along the vertical direction and the direction perpendicular to the reciprocating linear motion of the working table, the tool is high in efficiency, and the standardization of screw tap grinding is easy to realize.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a tap sharpening device according to the present invention;
FIG. 2 is a left side view of a partial structure (excluding a power grinding wheel mechanism) of a tap sharpening device according to the present invention;
fig. 3 is a schematic structural view of an angle adjusting plate of the tap sharpening device according to the present invention.
[ detailed description ] embodiments
Referring to fig. 1 to 3, the tap grinding device of the present invention comprises a base 1, a workbench 2, a first thimble mechanism 3, a second thimble mechanism 4, a grinding wheel adjusting mechanism 5, a power grinding wheel mechanism 6 and a guide rail 7, wherein the base 1 comprises a plurality of groups of guide bases, each group of guide bases comprises two guide bases symmetrically distributed on two sides of the workbench 2, a gap for the workbench 2 to move is formed between the two guide bases, one side of each guide base facing the workbench 2 is provided with a guide wheel group 11, the workbench 2 is movably mounted on the guide wheel group 11 and can move along the guide wheel group 11, the workbench 2 is provided with the first thimble mechanism 3 and the second thimble mechanism 4 which are symmetrically arranged, the guide rail 7 perpendicular to the workbench 2 is arranged below the workbench 2, the guide rail 7 is provided with the grinding wheel adjusting mechanism 5 which can be adjusted along the length direction of the guide rail, the grinding wheel adjusting mechanism 5 is provided with a vertical adjusting bracket 52 which can be adjusted along the vertical direction, one side of the vertical adjusting frame 52 is provided with the power grinding wheel mechanism 6.
Further, the grinding wheel adjusting mechanism 5 further comprises a movable mounting support 51, a first adjusting screw 53, an angle adjusting plate 54 and a second adjusting screw 55, the movable mounting support 51 is an L-shaped support and comprises a transverse support plate and a vertical support plate, the transverse support plate is movably mounted on the guide rail 7, an adjusting support 71 is arranged at one end of the guide rail 7, the second adjusting screw 55 is mounted on the adjusting support 71, the end portion of the second adjusting screw 55 is rotatably connected with the transverse support plate and used for adjusting the position of the movable mounting support 51 on the guide rail 7, a vertical adjusting frame 52 is movably mounted on the vertical support plate, the first adjusting screw 53 is mounted on the vertical adjusting frame 52, the lower end of the first adjusting screw 53 is rotatably connected with an auxiliary support 511 on the side wall of the vertical support plate and used for adjusting the height of the vertical adjusting frame 52, and the second adjusting screw 55, Nuts are respectively arranged on the first adjusting screw rods 53, and the power grinding wheel mechanism 6 is arranged on the vertical adjusting frame 52 through an angle adjusting plate 54. Specifically, referring to fig. 3, the angle adjusting plate 54 is an L-shaped bracket, and includes a grinding wheel mounting frame 541 and a rotary adjusting frame 542, the rotary adjusting frame 542 is provided with a plurality of arc-shaped adjusting grooves 543, the rotary adjusting frame 542 is mounted on the vertical adjusting frame 52 through a plurality of adjusting bolts, the adjusting bolts are matched with the arc-shaped adjusting grooves 543, the power grinding wheel mechanism 6 is mounted on the grinding wheel mounting frame 541, and the center of the grinding wheel mounting frame 541 is provided with a through groove 5410 through which the power grinding wheel mechanism 6 penetrates.
Further, the guide wheel set 11 includes a longitudinal limit guide wheel 111 and a transverse limit guide wheel 112, the axes of the longitudinal limit guide wheel 111 and the transverse limit guide wheel 112 are perpendicular to each other, and the longitudinal limit guide wheel 111 and the transverse limit guide wheel 112 are used for guiding and limiting together, so that the stability of the operation of the workbench can be ensured.
Further, the both sides of workstation 2 up end are equipped with the guide way 21 with vertical spacing guide pulley 111 looks adaptation, the below symmetry of workstation 2 is equipped with two walking frames 22, the bilateral symmetry of walking frame 22 is equipped with gyro wheel 221, the one end of workstation 2 is equipped with handle 23, and wherein handle 23 and workstation 2 adopt rotatable coupling, and the other end is equipped with the spacing frame 24 that keeps off that is used for shutoff guide way 21, sets up handle 23 and makes things convenient for the control table to remove, sets up spacing frame 24 and can prevent to pull out the workstation from the base.
Further, the first thimble mechanism 3 includes an adjusting mounting base 31 and a thimble 32, the thimble 32 is installed in the internal thread mounting cavity on the adjusting mounting base 31 through an adjusting nut, one end of the thimble 32 has an external conical surface, the first thimble mechanism 3 and the second thimble mechanism 4 have the same structure, and the axes of the thimbles 32 on the first thimble mechanism 3 and the second thimble mechanism 4 coincide with each other.
Further, the power grinding wheel mechanism 6 comprises a grinding wheel and a motor 61 for driving the grinding wheel to rotate, wherein the axis of the driving shaft of the motor 61 is perpendicular to the axis of the thimble 32.
The working process of the invention is as follows:
according to the screw tap grinding device, the first ejector pin mechanism 3 and the second ejector pin mechanism 4 in the drawing 1 are provided with outer conical surfaces, the two ends of the screw tap are provided with central holes, and the screw tap can be well fixed on a workbench through the first ejector pin mechanism 3 and the second ejector pin mechanism 4. The worktable 2 is mounted on the base 1 and can reciprocate linearly in the direction of the thimble 32 under the restriction of the guide wheel set 11 of the base 1.
The power grinding wheel mechanism 6 is provided with a grinding wheel for grinding a tap and a motor 61 for driving the grinding wheel. The power grinding wheel mechanism 6 is arranged on the grinding wheel adjusting mechanism 5. The grinding wheel adjusting mechanism 5 can enable the power grinding wheel mechanism 6 to move in the vertical direction and the direction perpendicular to the reciprocating linear motion of the workbench 1, and can adjust the angle of the power grinding wheel mechanism 6 by rotating the rotary adjusting bracket 542, so that the grinding wheel and the screw tap can swing by a certain inclination angle. The grinding of the axial direction of the screw tap is carried out by the reciprocating motion of the workbench along the direction of the thimble. The position of the grinding wheel relative to the screw tap is adjusted by adjusting the position of the grinding wheel power mechanism in the vertical direction. The grinding wheel moves along the direction of the motor shaft to adjust the axial position of the grinding wheel relative to the screw tap. Thereby realizing grinding of the tap. Therefore, the efficiency is high, and the standardization of the grinding of the screw tap is easy to realize.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides a screw tap grinding device which characterized in that: comprises a base (1), a workbench (2), a first thimble mechanism (3), a second thimble mechanism (4), a grinding wheel adjusting mechanism (5), a power grinding wheel mechanism (6) and a guide rail (7), wherein the base (1) comprises a plurality of groups of guide bases, each group of guide bases comprises two guide bases which are symmetrically distributed at two sides of the workbench (2), a gap for the workbench (2) to move is arranged between the two guide bases, a guide wheel group (11) is arranged at one side of each guide base towards the workbench (2), the workbench (2) is movably arranged on the guide wheel group (11) and can move along the guide wheel group (11), the workbench (2) is provided with the first thimble mechanism (3) and the second thimble mechanism (4) which are symmetrically distributed, the guide rail (7) which is vertical to the workbench (2) is arranged below the workbench (2), and the grinding wheel adjusting mechanism (5) which can be adjusted along the length direction of the guide rail (7) is arranged on the guide rail (7), the grinding wheel adjusting mechanism (5) is provided with a vertical adjusting frame (52) capable of being adjusted in the vertical direction, and one side of the vertical adjusting frame (52) is provided with the power grinding wheel mechanism (6).
2. The tap sharpening device according to claim 1, wherein: the grinding wheel adjusting mechanism (5) further comprises a movable mounting support (51), a first adjusting screw rod (53), an angle adjusting plate (54) and a second adjusting screw rod (55), wherein the movable mounting support (51) is an L-shaped support and comprises a transverse support plate and a vertical support plate, the transverse support plate is movably mounted on the guide rail (7), one end of the guide rail (7) is provided with an adjusting support (71), the second adjusting screw rod (55) is mounted on the adjusting support (71), the end part of the second adjusting screw rod (55) is rotatably connected with the transverse support plate and is used for adjusting the position of the movable mounting support (51) on the guide rail (7), the vertical support plate is movably mounted with a vertical adjusting frame (52), the vertical adjusting frame (52) is provided with the first adjusting screw rod (53), and the lower end of the first adjusting screw rod (53) is rotatably connected with an auxiliary support (511) on the side wall of the vertical support plate, the height of the vertical adjusting frame (52) is adjusted, and the power grinding wheel mechanism (6) is installed on the vertical adjusting frame (52) through an angle adjusting plate (54).
3. The tap sharpening device according to claim 2, wherein: angle adjusting plate (54) are L shape support, including emery wheel mounting bracket (541) and rotation regulation frame (542), be equipped with a plurality of arc adjustment tank (543) on rotation regulation frame (542), rotation regulation frame (542) are installed on vertical alignment jig (52) through a plurality of adjusting bolt, adjusting bolt cooperatees with arc adjustment tank (543), install on emery wheel mounting bracket (541) power emery wheel mechanism (6), the center department of emery wheel mounting bracket (541) has logical groove (5410) that supplies power emery wheel mechanism (6) to wear out.
4. The tap sharpening device according to claim 1, wherein: the guide wheel set (11) comprises a longitudinal limiting guide wheel (111) and a transverse limiting guide wheel (112), and the axes of the longitudinal limiting guide wheel (111) and the transverse limiting guide wheel (112) are perpendicular to each other.
5. A tap sharpening device according to claim 3, wherein: the utility model discloses a spacing guide pulley (111) of workstation (2) up end, including workstation (2), the below symmetry of workstation (2) is equipped with two walking frames (22), the bilateral symmetry of walking frame (22) is equipped with gyro wheel (221), the one end of workstation (2) is equipped with handle (23), and the other end is equipped with spacing fender frame (24) that are used for shutoff guide pulley (21).
6. The tap sharpening device according to claim 1, wherein: first thimble mechanism (3) are including adjusting mount pad (31) and thimble (32), install in the internal thread installation cavity on adjusting mount pad (31) thimble (32), the one end of thimble (32) has the outer conical surface, the structure of first thimble mechanism (3) and second thimble mechanism (4) is the same, and the axis of thimble (32) on first thimble mechanism (3), second thimble mechanism (4) coincides mutually.
7. The tap sharpening device according to claim 6, wherein: the power grinding wheel mechanism (6) comprises a grinding wheel and a motor (61) for driving the grinding wheel to rotate, and the axis of a driving shaft of the motor (61) is perpendicular to the axis of the thimble (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010708146.7A CN111958337A (en) | 2020-07-22 | 2020-07-22 | Screw tap grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010708146.7A CN111958337A (en) | 2020-07-22 | 2020-07-22 | Screw tap grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111958337A true CN111958337A (en) | 2020-11-20 |
Family
ID=73364148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010708146.7A Pending CN111958337A (en) | 2020-07-22 | 2020-07-22 | Screw tap grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111958337A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873605A (en) * | 2012-08-31 | 2013-01-16 | 重庆市璧山宏向汽配有限公司 | Adjustable double-side chamfering machine for gaskets of brake |
| CN202861907U (en) * | 2012-09-26 | 2013-04-10 | 深圳市维可达精密科技有限公司 | Screw tap machining grinding machine |
| CN203527157U (en) * | 2013-09-03 | 2014-04-09 | 舟山市7412工厂 | Screw tap sharpening machine |
| CN205799137U (en) * | 2016-06-21 | 2016-12-14 | 福建居怡竹木业有限公司 | Tongue and groove burr polisher |
| CN106625043A (en) * | 2016-12-08 | 2017-05-10 | 海盐卫士标准件有限公司 | Screw tap grinding device |
| CN107379149A (en) * | 2017-09-15 | 2017-11-24 | 苏州卫刚木包装制品有限公司 | A kind of wooden packing arc grooving apparatus |
| RU185996U1 (en) * | 2018-08-28 | 2018-12-26 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "Брянский государственный технический университет" | CNC Grinding Machine Layout |
| CN209425388U (en) * | 2018-12-29 | 2019-09-24 | 河南寅兴牧业设备有限公司 | A kind of square tube cutting fixed station |
-
2020
- 2020-07-22 CN CN202010708146.7A patent/CN111958337A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873605A (en) * | 2012-08-31 | 2013-01-16 | 重庆市璧山宏向汽配有限公司 | Adjustable double-side chamfering machine for gaskets of brake |
| CN202861907U (en) * | 2012-09-26 | 2013-04-10 | 深圳市维可达精密科技有限公司 | Screw tap machining grinding machine |
| CN203527157U (en) * | 2013-09-03 | 2014-04-09 | 舟山市7412工厂 | Screw tap sharpening machine |
| CN205799137U (en) * | 2016-06-21 | 2016-12-14 | 福建居怡竹木业有限公司 | Tongue and groove burr polisher |
| CN106625043A (en) * | 2016-12-08 | 2017-05-10 | 海盐卫士标准件有限公司 | Screw tap grinding device |
| CN107379149A (en) * | 2017-09-15 | 2017-11-24 | 苏州卫刚木包装制品有限公司 | A kind of wooden packing arc grooving apparatus |
| RU185996U1 (en) * | 2018-08-28 | 2018-12-26 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "Брянский государственный технический университет" | CNC Grinding Machine Layout |
| CN209425388U (en) * | 2018-12-29 | 2019-09-24 | 河南寅兴牧业设备有限公司 | A kind of square tube cutting fixed station |
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Application publication date: 20201120 |