CN210476415U - Precision surface grinding machine - Google Patents
Precision surface grinding machine Download PDFInfo
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- CN210476415U CN210476415U CN201921072886.5U CN201921072886U CN210476415U CN 210476415 U CN210476415 U CN 210476415U CN 201921072886 U CN201921072886 U CN 201921072886U CN 210476415 U CN210476415 U CN 210476415U
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Abstract
The utility model discloses an accurate surface grinder, including preceding main frame, preceding main frame comprises preceding support body, first spout, second spout, slot and connecting hole, and first spout and second spout have been seted up to the upper end of preceding support body, the slot has been seted up to department in the middle of the rear end of preceding support body, and the notch both sides department of slot has seted up the connecting hole, the inslot of the slot that preceding support body was seted up inserts has the back main frame, and the back main frame comprises back support body, connecting block, first sliding tray and second sliding tray. A precision surface grinding machine, through ball screw's mode realize the slip of sliding plate and workstation, hand wheel mechanism about the cancellation tradition conveniently carries out the slip of workstation, the spout that the draw runner that the sliding plate lower extreme set up and preceding main frame were seted up cooperatees and sets up, block connected mode plays spacing effect to sliding structure between draw runner and the spout, the ball that the draw runner set up can reduce the friction between draw runner and the spout.
Description
Technical Field
The utility model relates to a flat grinder field, in particular to accurate flat grinder.
Background
A surface grinder is one type of grinder. The grinding wheel is mainly used for rotatably grinding a workpiece to achieve the required flatness, the grinding wheel can be divided into a rectangular workbench and a circular workbench according to the shape of the workbench, the main parameters of a rectangular workbench surface grinding machine are the width and the length of the workbench, the main parameters of the circular workbench are the diameter of the workbench surface, and the grinding wheel can be divided into a horizontal shaft grinding machine and a vertical shaft grinding machine according to different shafts; in the process of using the precise surface grinding machine, because the workbench is moved by using the traditional upper and lower hand wheel structures, the upper and lower hand wheel mechanisms are complex to use, consume time and labor, and have friction between the workbench and the front main frame, so that the workbench is abraded.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a precision surface grinder which can effectively solve the problems of the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a precise surface grinding machine comprises a front main frame, wherein the front main frame consists of a front frame body, a first sliding groove, a second sliding groove, an inserting groove and a connecting hole, the upper end of the front frame body is provided with the first sliding groove and the second sliding groove, the middle of the rear end of the front frame body is provided with the inserting groove, the two sides of the opening of the inserting groove are provided with the connecting hole, the groove of the inserting groove formed in the front frame body is inserted with a rear main frame, the rear main frame consists of a rear frame body, a connecting block, a first sliding groove and a second sliding groove, the two sides of the rear frame body are provided with the connecting block near the front end, the front end of the rear frame body is inserted into the inserting groove, the upper end of the rear frame body is provided with the first sliding groove and the second sliding groove, the upper end of the rear frame body is clamped with a sliding frame, the sliding frame consists of a sliding frame, the first sliding strip and the second sliding strip, the, the first sliding strip and the second sliding strip are clamped into the first sliding groove and the second sliding groove, the upper end of the sliding frame is connected with an upper rack through bolts, the front end of the upper rack is connected with a head seat, the upper end of the front rack is clamped with a sliding plate, the sliding plate consists of a plate body, a first sliding strip and a second sliding strip, the first sliding strip and the second sliding strip are clamped and connected into the first sliding groove and the second sliding groove, the lower end of the plate body is connected with a sliding structure, the sliding structure consists of a screw rod, a ball connecting piece and a screw hole, a ball connecting piece is sleeved on a rod body of the screw rod, the upper end of a block of the ball connecting piece is provided with the screw hole, the ball connecting piece is connected with the plate body through a bolt inserted into the screw hole, the other end of the screw rod is connected with a supporting block through threads, one side of the, and the driving shaft of the driving motor is connected with the screw rod, the supporting block is installed in a groove on the upper part of the other side of the front frame body through a bolt, the upper end of the sliding plate is provided with a mounting hole, and the upper end of the sliding plate is provided with a workbench.
Preferably, the rod body of the screw rod is provided with threads, a roller inner hole of the ball connecting piece is provided with threads, the screw rod is connected with the roller of the ball connecting piece through the threads, a screw hole formed in a block body arranged at the upper end of the ball connecting piece is aligned with a threaded hole formed in the lower end of the plate body, and the ball connecting piece is inserted into the screw hole through a bolt and is connected with the plate body of the sliding plate.
Preferably, the screw rod is connected with a driving shaft arranged on the driving motor through the screw rod by a bolt, an inclined threaded hole is formed in the upper end of the supporting block, and the supporting block is connected with the front frame body through the inclined threaded hole.
Preferably, the groove walls of the first sliding groove and the second sliding groove are provided with ball grooves, the side walls of the first sliding strip and the second sliding strip are provided with balls, and the balls arranged on the side walls of the first sliding strip and the second sliding strip are clamped into the ball grooves formed in the groove walls of the first sliding groove and the second sliding groove.
Preferably, the groove walls of the first sliding groove and the second sliding groove are provided with ball grooves, the side walls of the first sliding strip and the second sliding strip are provided with balls, and the balls arranged on the side walls of the first sliding strip and the second sliding strip are clamped into the ball grooves formed in the groove walls of the first sliding groove and the second sliding groove.
Preferably, another group of sliding structures, driving motors and supporting blocks are arranged between the sliding frame and the rear frame body, the other group of driving motors are installed at the rear end of the rear frame body through bolts, and the structures of the other group of driving motors, the other group of sliding structures and the supporting blocks are the same as those of the sliding structures, the driving motors and the supporting blocks between the front frame body and the sliding plate.
Preferably, a threaded hole is formed in the front end of a connecting block arranged on the rear main frame, the threaded hole formed in the front end of the connecting block is aligned with a connecting hole formed in the middle of the rear end of the front frame body, and the connecting block is connected with the front frame body through a bolt.
Preferably, the front main frame is hollow, the rear main frame is hollow, and the rear main frame is communicated with the front main frame.
Compared with the prior art, the utility model discloses following beneficial effect has: this precision surface grinding machine:
the sliding plate and the workbench slide through the arranged sliding structure in a ball screw mode, a traditional upper and lower hand wheel mechanism is omitted, and the workbench can slide conveniently;
through the arranged sliding plate, a sliding strip arranged at the lower end of the sliding plate is matched with a sliding groove formed in the front main frame, a limiting effect is achieved on a sliding structure in a clamping connection mode between the sliding strip and the sliding groove, and the friction between the sliding strip and the sliding groove can be reduced through balls arranged on the sliding strip;
the whole precision surface grinding machine is simple in structure, convenient to operate and better in using effect compared with the traditional mode.
Drawings
FIG. 1 is a schematic view of the overall structure of a precision surface grinder of the present invention;
FIG. 2 is a schematic structural view of a front main frame of the precision surface grinding machine of the present invention;
FIG. 3 is a schematic structural view of a rear main frame of the precision surface grinding machine of the present invention;
FIG. 4 is a schematic view of the sliding plate structure of the precision surface grinder of the present invention;
FIG. 5 is a schematic view of a sliding structure of a precision surface grinding machine according to the present invention;
fig. 6 is an enlarged schematic view of a point a in fig. 5 of the precision flat grinder of the present invention.
In the figure: 1. a front main frame; 101. a front frame body; 102. a first chute; 103. a second chute; 104. a slot; 105. connecting holes; 2. a work table; 3. a rear main frame; 301. a rear frame body; 302. connecting blocks; 303. a first sliding groove; 304. a second sliding groove; 4. an upper frame; 5. a headstock; 6. a drive motor; 7. a sliding plate; 701. a plate body; 702. a first slide bar; 703. a second slide bar; 8. a carriage; 801. a carriage; 802. a first slider bar; 803. a second slide bar; 9. a sliding structure; 901. a screw rod; 902. a ball connection; 903. a screw hole; 10. a support block; 11. and (7) installing holes.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 6, a precision surface grinder includes a front main frame 1, the front main frame 1 is composed of a front frame body 101, a first sliding groove 102, a second sliding groove 103, an inserting groove 104 and a connecting hole 105, the upper end of the front frame body 101 is provided with the first sliding groove 102 and the second sliding groove 103, the middle of the rear end of the front frame body 101 is provided with the inserting groove 104, the two sides of the opening of the inserting groove 104 are provided with the connecting hole 105, the rear main frame 3 is inserted into the groove of the inserting groove 104 formed in the front frame body 101, the rear main frame 3 is composed of a rear frame body 301, a connecting block 302, a first sliding groove 303 and a second sliding groove 304, the two sides of the rear frame body 301 near the front end are provided with the connecting block 302, the front end of the rear frame body 301 is inserted into the groove 104, the upper end of the rear frame body 301 is provided with the first sliding groove 303 and the second sliding groove 304, the upper end of the, A first sliding strip 802 and a second sliding strip 803, the lower end of the sliding frame 801 is provided with the first sliding strip 802 and the second sliding strip 803, the first sliding strip 802 and the second sliding strip 803 are clamped into the first sliding groove 303 and the second sliding groove 304, the upper end of the sliding frame 8 is connected with the upper frame 4 through bolts, the front end of the upper frame 4 is connected with the headstock 5, the upper end of the front frame 101 is connected with the sliding plate 7 in a clamping manner, the sliding plate 7 is composed of a plate body 701, a first sliding strip 702 and a second sliding strip 703, the first sliding strip 702 and the second sliding strip 703 are connected in the first sliding groove 102 and the second sliding groove 103 in a clamping manner, the lower end of the plate body 701 is connected with a sliding structure 9, the sliding structure 9 is composed of a screw rod 901, a ball connecting piece 902 and a screw hole 903, the rod body of the screw rod 901 is sleeved with the ball connecting piece 902, the upper end of the ball connecting piece 902 is provided with the screw hole 903, the ball connecting piece 902 is connected with, the other end of the screw 901 is connected with a supporting block 10 through a thread, one side of the front frame body 101 is provided with a driving motor 6 through a bolt, a driving shaft of the driving motor 6 is connected with the screw 901, the supporting block 10 is installed in a groove at the upper part of the other side of the front frame body 101 through a bolt, the upper end of the sliding plate 7 is provided with a mounting hole 11, and the upper end of the sliding plate 7 is provided with the workbench 2.
The body of the screw 901 is provided with threads, the inner hole of the roller of the ball connecting piece 902 is provided with threads, the screw 901 is connected with the roller of the ball connecting piece 902 through the threads, a screw hole 903 formed in a block body arranged at the upper end of the ball connecting piece 902 is aligned with a thread hole formed at the lower end of the plate body 701, and the ball connecting piece 902 is connected with the plate body 701 of the sliding plate 7 through a bolt inserted into the screw hole 903; the screw 901 is connected with a driving shaft arranged on the driving motor 6 through the screw 901 by a bolt, an inclined threaded hole is formed in the upper end of the supporting block 10, and the supporting block 10 is connected with the front frame body 101 through the inclined threaded hole; ball grooves are formed in the groove walls of the first sliding groove 102 and the second sliding groove 103, balls are arranged on the side walls of the first sliding strip 702 and the second sliding strip 703, and the balls arranged on the side walls of the first sliding strip 702 and the second sliding strip 703 are clamped into the ball grooves formed in the groove walls of the first sliding groove 102 and the second sliding groove 103; ball grooves are formed in the groove walls of the first sliding groove 303 and the second sliding groove 304, balls are arranged on the side walls of the first sliding strip 802 and the second sliding strip 803, and the balls arranged on the side walls of the first sliding strip 802 and the second sliding strip 803 are clamped into the ball grooves formed in the groove walls of the first sliding groove 303 and the second sliding groove 304; another group of sliding structures 9, driving motors 6 and supporting blocks 10 are arranged between the sliding frame 8 and the rear frame body 301, the other group of driving motors 6 are installed at the rear end of the rear frame body 301 through bolts, and the structures of the other group of driving motors 6, the other group of sliding structures 9 and the supporting blocks 10 are the same as the structures of the sliding structures 9, the driving motors 6 and the supporting blocks 10 between the front frame body 101 and the sliding plate 7; a threaded hole is formed in the front end of a connecting block 302 arranged on the rear main frame 3, the threaded hole formed in the front end of the connecting block 302 is aligned with a connecting hole 105 formed in the middle of the rear end of the front frame body 101, and the connecting block 302 is connected with the front frame body 101 through a bolt; the front main frame 1 is hollow, the rear main frame 3 is hollow, and the rear main frame 3 is communicated with the front main frame 1.
It should be noted that, the utility model relates to a precision surface grinding machine, firstly, the installation between the front main frame 1 and the rear main frame 3, the slot 104 hole opened at the rear end of the front main frame 1 is inserted into the rear frame body 301 arranged on the rear main frame 3, the connecting block 302 arranged at both sides of the rear frame body 301 is tightly attached to the rear end of the front frame body 101, the screw hole opened on the connecting block 302 is aligned with the connecting hole 105 opened at the rear end of the front frame body 101, the bolt is inserted into the screw hole opened on the connecting block 302, the bolt penetrates through the connecting block 302 and is inserted into the connecting hole 105 hole, the fixed connection between the rear frame body 301 and the front frame body 101 is realized, the installation of the inner parts of the front main frame 1 and the rear main frame body 3 is carried out after the connection is finished, then the installation between the sliding plate 7 at the upper end of the front main frame 1 and the sliding structure 9 is carried out, screw holes 903 formed in the upper end of a ball connecting piece 902 are aligned with threaded holes formed in the lower end of a sliding plate 7, bolts are inserted into the screw holes 903 through the screw holes, the bolts penetrate through the ball connecting piece 902 and are inserted into the threaded holes formed in the lower end of the sliding plate 7, connection between the ball connecting piece 902 and the sliding plate 7 is achieved, threaded holes formed in a supporting block 10 are aligned with screw rods 901 and are inserted, the supporting block 10 is rotated to achieve connection between the supporting block 10 and the screw rods 901, the screw rods 901 and a driving shaft of a driving motor 6 are connected, the driving shaft is fixedly connected with the screw rods 901 through the bolts, the driving motor 6, the sliding plate 7, a sliding structure 9 and a front main frame 1 are installed, a first sliding strip 702 and a second sliding strip 703 arranged on the sliding plate 7 are aligned with a first sliding groove 102 and a second sliding groove 103 formed in the upper end of a front frame body 101, balls clamped into the first sliding groove 102 and the second sliding groove 103 are In the groove, the screw 901 and the ball connecting piece 902 are placed between the front frame 101 and the sliding plate 7, the driving motor 6 is placed at one side of the front frame 101, the supporting block 10 is placed at the other side of the front frame 101, the upper end of the supporting block 10 is provided with an inclined threaded hole to be connected with the front frame 101 through a bolt, the driving motor 6 is connected with the front frame 101 through a bolt, in the rotating process of the driving shaft of the driving motor 6, the driving shaft drives the screw 901 to rotate, because the sliding plate 7 is clamped at the upper end of the front frame 101, the screw 901 drives the ball connecting piece 902 to rotate only along the screw 901, the ball connecting piece 902 rotates along the screw 901 to drive the sliding plate 7 to move, the first slide bar 702 and the second slide bar 703 arranged on the sliding plate 7 slide along the first sliding groove 102 and the second sliding groove 103 arranged at the upper end of the front frame 101, the balls arranged on the side walls of the first slide bar 702, the friction force of the sliding plate 7 is reduced, during the sliding process of the sliding plate 7, the upper end of the sliding plate 7 slides along with the workbench 2 connected by bolts, then the connection of the sliding frame 8 at the upper end of the rear frame body 301 is carried out, the first sliding strip 802 and the second sliding strip 803 arranged on the sliding frame 8 align to the first sliding groove 303 and the second sliding groove 304 arranged at the upper end of the rear frame body 301 for clamping, the side walls of the first sliding strip 802 and the second sliding strip 803 are provided with balls for clamping into the first sliding groove 303 and the second sliding groove 304 to realize the connection between the sliding frame 8 and the rear frame body 301, the upper end of the sliding frame 8 is connected with the upper frame 4 by bolts, the components are installed in the upper frame 4, the front end of the upper frame 4 is connected with the headstock 5 by bolts, another group of sliding structures 9 can be arranged between the rear frame bodies 301 of the sliding frame 8 for sliding, the driving motor 6 connected with the other group of sliding structures 9 is, the supporting block 10 connected with the other group of sliding structures 9 is connected to the upper part of the front end of the rear frame body 301 through a bolt, the ball connecting piece 902 arranged on the other group of sliding structures 9 is connected with the sliding frame 801 arranged on the sliding frame 8 through a bolt, so that the installation of the machine body is completed, and then the installation of related parts can be carried out.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A precision surface grinding machine is characterized in that: comprises a front main frame (1), wherein the front main frame (1) consists of a front frame body (101), a first sliding groove (102), a second sliding groove (103), an inserting groove (104) and a connecting hole (105), the upper end of the front frame body (101) is provided with the first sliding groove (102) and the second sliding groove (103), the middle part of the rear end of the front frame body (101) is provided with the inserting groove (104), the two sides of the notch of the inserting groove (104) are provided with the connecting hole (105), the slot of the inserting groove (104) arranged on the front frame body (101) is inserted with a rear main frame (3), the rear main frame (3) consists of a rear frame body (301), a connecting block (302), a first sliding groove (302) and a second sliding groove (304), the two sides of the rear frame body (301) are provided with the connecting block (302) near the front end, the front end of the rear frame body (301) is inserted into the slot (104), the upper end of the rear frame body (301) is provided with the first sliding groove (303) and the second, the upper end of the rear frame body (301) is clamped with a sliding frame (8), the sliding frame (8) is composed of a sliding frame (801), a first sliding strip (802) and a second sliding strip (803), the lower end of the sliding frame (801) is provided with a first sliding strip (802) and a second sliding strip (803), the first sliding strip (802) and the second sliding strip (803) are clamped into a first sliding groove (303) and a second sliding groove (304), the upper end of the sliding frame (8) is connected with an upper frame (4) through bolts, the front end of the upper frame (4) is connected with a headstock (5), the upper end of the front frame body (101) is clamped with a sliding plate (7), the sliding plate (7) is composed of a plate body (701), a first sliding strip (702) and a second sliding strip (703), the first sliding strip (702) and the second sliding strip (703) are clamped into a first sliding groove (102) and a second sliding groove (103), the lower end of the plate body (701) is connected with a sliding structure (9), the sliding structure (9) is composed of a screw rod (901), a ball connecting piece (902) and a screw hole (903), the rod body of the screw rod (901) is sleeved with the ball connecting piece (902), and the upper end of the block of the ball connecting piece (902) is provided with a screw hole (903), the ball connecting piece (902) is connected with the plate body (701) by inserting a bolt into the screw hole (903), the other end of the screw rod (901) is connected with a supporting block (10) through a thread, one side of the front frame body (101) is provided with a driving motor (6) through a bolt, and the driving shaft of the driving motor (6) is connected with the screw rod (901), the supporting block (10) is arranged in a groove at the upper part of the other side of the front frame body (101) through a bolt, the upper end of the sliding plate (7) is provided with a mounting hole (11), and the upper end of the sliding plate (7) is provided with a workbench (2).
2. A precision surface grinding machine according to claim 1, characterized in that: the screw rod body of the screw rod (901) is provided with threads, the inner hole of the roller of the ball connecting piece (902) is provided with threads, the screw rod (901) is connected with the roller of the ball connecting piece (902) through the threads, a screw hole (903) formed in the block body arranged at the upper end of the ball connecting piece (902) is aligned with the threaded hole formed in the lower end of the plate body (701), and the ball connecting piece (902) is inserted into the screw hole (903) through a bolt and is connected with the plate body (701) of the sliding plate (7).
3. A precision surface grinding machine according to claim 1, characterized in that: the screw rod (901) is connected with a driving shaft arranged on the driving motor (6) through the screw rod (901) by a bolt, an inclined threaded hole is formed in the upper end of the supporting block (10), and the supporting block (10) is connected with the front frame body (101) by the inclined threaded hole.
4. A precision surface grinding machine according to claim 1, characterized in that: ball grooves are formed in the groove walls of the first sliding groove (102) and the second sliding groove (103), balls are arranged on the side walls of the first sliding strip (702) and the second sliding strip (703), and the balls arranged on the side walls of the first sliding strip (702) and the second sliding strip (703) are clamped into the ball grooves formed in the groove walls of the first sliding groove (102) and the second sliding groove (103).
5. A precision surface grinding machine according to claim 1, characterized in that: the ball grooves are formed in the groove walls of the first sliding groove (303) and the second sliding groove (304), the ball bearings are arranged on the side walls of the first sliding strip (802) and the second sliding strip (803), and the ball bearings arranged on the side walls of the first sliding strip (802) and the second sliding strip (803) are clamped into the ball grooves formed in the groove walls of the first sliding groove (303) and the second sliding groove (304).
6. A precision surface grinding machine according to claim 1, characterized in that: another group of sliding structures (9), driving motors (6) and supporting blocks (10) are arranged between the sliding frame (8) and the rear frame body (301), the other group of driving motors (6) are installed at the rear end of the rear frame body (301) through bolts, and the structures of the other group of driving motors (6), the other group of sliding structures (9) and the supporting blocks (10) are the same as the structures of the sliding structures (9), the driving motors (6) and the supporting blocks (10) between the front frame body (101) and the sliding plate (7).
7. A precision surface grinding machine according to claim 1, characterized in that: the front end of a connecting block (302) arranged on the rear main frame (3) is provided with a threaded hole, the threaded hole formed in the front end of the connecting block (302) is aligned with a connecting hole (105) formed in the middle of the rear end of the front frame body (101), and the connecting block (302) is connected with the front frame body (101) through a bolt.
8. A precision surface grinding machine according to claim 1, characterized in that: the front main frame (1) is arranged in a hollow mode, the rear main frame (3) is arranged in a hollow mode, and the rear main frame (3) is communicated with the front main frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072886.5U CN210476415U (en) | 2019-07-10 | 2019-07-10 | Precision surface grinding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072886.5U CN210476415U (en) | 2019-07-10 | 2019-07-10 | Precision surface grinding machine |
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| CN210476415U true CN210476415U (en) | 2020-05-08 |
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| CN201921072886.5U Active CN210476415U (en) | 2019-07-10 | 2019-07-10 | Precision surface grinding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216536A (en) * | 2019-07-10 | 2019-09-10 | 阳春市晟泽机械金属有限公司 | A kind of precision horizontal surface grinding machine |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216536A (en) * | 2019-07-10 | 2019-09-10 | 阳春市晟泽机械金属有限公司 | A kind of precision horizontal surface grinding machine |
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Denomination of utility model: A precision surface grinder Effective date of registration: 20220930 Granted publication date: 20200508 Pledgee: Agricultural Bank of China Limited Yangchun Sub branch Pledgor: Yangchun Shengze Machinery Metal Co.,Ltd. Registration number: Y2022980017387 |