CN112828325B - Cutter fast-assembling cooling structure of numerical control lathe - Google Patents
Cutter fast-assembling cooling structure of numerical control lathe Download PDFInfo
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- CN112828325B CN112828325B CN202110141785.4A CN202110141785A CN112828325B CN 112828325 B CN112828325 B CN 112828325B CN 202110141785 A CN202110141785 A CN 202110141785A CN 112828325 B CN112828325 B CN 112828325B
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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
- B23B29/04—Tool holders for a single cutting tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention aims to provide a quick-assembly cooling structure of a cutter of a numerical control lathe, which is used for solving the problems in the prior art and comprises an upper cutter holder and a lower cutter holder which are oppositely superposed up and down, wherein the upper cutter holder and the lower cutter holder are enclosed to form an installation cavity which is provided with an installation opening at one side and used for clamping a turning tool, the quick-assembly cooling structure also comprises a cooling pipeline, the cooling pipeline comprises an upper cooling cavity and a lower cooling cavity which are respectively arranged on the upper cutter holder and the lower cutter holder, the upper cooling cavity and the lower cooling cavity are provided with cooling surfaces exposed on the opposite surfaces of the upper cutter holder and the lower cutter holder, the upper cutter holder and the lower cutter holder are respectively provided with an upper clamping piece and a lower clamping piece which are connected with the cooling surfaces, and when the turning tool is clamped between the upper cutter holder and the lower cutter holder, the upper clamping piece is elastically deformed and is abutted against the upper surface of the upper cutter holder and the lower cutter holder. Thereby realize quick, the stable clamping of numerical control lathe and change the effect of lathe tool to provide high-efficient, holistic cooling radiating effect to the lathe tool.
Description
Technical Field
The invention relates to the technical field of numerical control lathe equipment, in particular to a cutter fast-assembly cooling structure of a numerical control lathe.
Background
In the running process of the lathe, the workpiece is driven to rotate by the rotation of the main shaft to contact with the cutter so as to realize cutting processing. Wherein numerical control lathe because of its degree of automation is high, can realize higher machining efficiency, and in the course of working, the frequency of bearing of its lathe tool is high, and cutting speed is fast, and then has great calorific capacity and takes place to lead to the heat altered shape that the machining precision descends, and the relative wearing and tearing of tool bit are also faster simultaneously, need change so that guarantee processingquality more often. The bearing structure of the existing tool apron for mounting the turning tool is not beneficial to quickly and accurately replacing and mounting the turning tool when the turning tool is mounted. Meanwhile, the existing cooling liquid with external jet flow is mainly used for heat dissipation and cooling. The cooling liquid of external pipeline jet flow can spread everywhere, causes to change the lathe tool, gets to need the clearance when putting the part, and work efficiency can't promote. Meanwhile, the cooling liquid sprayed from the outside to one point cannot absorb and homogenize heat of the whole turning tool, and the unbalanced heat distribution further aggravates the vulnerability of the turning tool.
Disclosure of Invention
The invention aims to provide a quick-mounting cooling structure for a cutter of a numerical control lathe, which is used for solving the problems in the prior art, so that the effect of quickly and stably clamping and replacing the cutter on the numerical control lathe is realized, and the efficient and integral cooling and heat dissipation effect on the cutter is provided.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
the utility model provides a numerical control lathe's cutter fast-assembling cooling structure, includes relative superpose from top to bottom last blade holder and lower blade holder, go up the blade holder and enclose with lower blade holder and close the installation cavity that is used for the clamping lathe tool that forms one side and has the installing port, still include the cooling line, the cooling line is including locating respectively go up the last cooling chamber and the lower cooling chamber of going up blade holder and lower blade holder, go up the cooling chamber and have with lower cooling chamber expose in go up the cooling surface of blade holder and lower blade holder relative surface, go up still be equipped with respectively on blade holder and the lower blade holder connect in the last holder and the lower holder of cooling surface, the lathe tool dress clamp in when going up blade holder and lower blade holder last holder elastic deformation and stopping in its upper surface.
Therefore, the upper clamping piece and the lower clamping piece are used for clamping the turning tool, and the turning tool is quickly clamped through elastic deformation of the upper clamping piece. Furthermore, the upper clamping piece and the lower clamping piece transfer heat of the turning tool to the upper cooling cavity and the lower cooling cavity through contact with the cooling surface, and further realize outward conveying of the heat through a cooling pipeline, so that cooling of the turning tool is realized.
As a further preferable technical solution of the present invention, the lower clamping member is provided with a plurality of positioning holes, the positioning holes are detachably connected with positioning members protruding from the surface of the lower clamping member, and the turning tool has at least one side surface abutting against the positioning members.
From this, through setting up the setting element is realized ending to the lathe tool and is supported, and a plurality of locating holes make can adjust the position of setting element to make and to set up the position, the angle etc. of adjusting the lathe tool of stopping on it through the position of setting element. In the large-batch continuous processing of parts with single configuration, the installation can be conveniently realized without extra adjustment when the turning tool is replaced each time by setting the position of the positioning part.
As a further preferable aspect of the present invention, the upper clamp includes an elastic portion having at least one bow-shaped bend and connecting portions provided at both ends of the elastic portion, and a bow-shaped extending direction of the elastic portion corresponds to the mounting opening.
From this, the holder realizes elastic positioning installation lathe tool through the bow-shaped structure of elastic component. When the lathe tool was installed, the installation cavity of impressing the lathe tool through installing port edgewise, the top of lathe tool and elastic component contact effect press it and, the elastic force of elastic component realizes pressing from both sides tightly to the preliminary of lathe tool this moment, makes it can not rock after ending to the setting element.
As a further preferable technical solution of the present invention, the upper tool apron is further provided with a guide portion on a surface thereof, the connecting portion is nested in the guide portion, the guide portion is a through hole correspondingly nested in the connecting portion, and the connecting portion is longer than the guide portion.
Therefore, in the process of pressing the elastic part, the deformation quantity of the elastic part moving towards two sides is represented as that the connecting part passes through the guide part, and the operation without interference is realized.
As a further preferable technical solution of the present invention, a cooling groove is provided on a surface of the housing of the upper cooling chamber, and a cooling ridge extending into the cooling groove is provided inside the elastic portion.
Therefore, on one hand, the heat of the turning tool is more effectively transferred to the upper cooling cavity through the structure that the cooling groove extends into the cooling ridge; on the other hand, through the matching of the cooling groove and the cooling ridge, when the turning tool is mounted on the elastic part and deforms, the elastic part provides a certain guiding effect and a certain movement direction control effect.
As a further preferable technical solution of the present invention, a heat conductive adhesive is disposed between the lower clamping member and the surface of the lower cooling cavity.
Therefore, the heat conduction efficiency is higher when the lathe tool conducts heat downwards.
As a further preferable technical solution of the present invention, the upper cooling chamber and the lower cooling chamber are commonly communicated with a cooling liquid pump through a cooling pipeline.
Thereby, the upper cooling chamber and the lower cooling chamber are simultaneously supplied with the cooling liquid by the cooling liquid pump and the circulation of the cooling liquid is realized.
As a further preferable technical solution of the present invention, the present invention further includes a coolant tank for accommodating the coolant pump, and a temperature control device and a filtering device are provided in the coolant tank.
Therefore, the temperature control device is used for adjusting the temperature of the cooling liquid, and particularly cooling the returned cooling liquid absorbing the heat of the turning tool; in some extreme cases (such as extremely cold), a certain amount of heat can be provided for the turning tool through the cooling pipeline by providing cooling liquid with a certain temperature through the temperature control device, so that the problems of cold brittleness, cold deformation and the like are reduced. The filtering device is of a fine metal mesh structure, and can effectively filter impurities which influence normal flowing in the pipeline, such as caking possibly generated by the cooling liquid in long-term use.
As a further preferable technical scheme of the present invention, an auxiliary cooling cavity extends from a side surface of the lower cooling cavity, and a surface of the auxiliary cooling cavity is attached to and connected to a surface of the turning tool.
Therefore, the contact area with the turning tool is further increased, particularly the contact area with the tool bit which bears the highest load and generates the most heat is increased, and the heat dissipation and cooling efficiency is further increased.
As a further preferable technical solution of the present invention, a side surface of the secondary cooling cavity is connected with a shower pipe, and an end of the shower pipe is directed to a tool bit of the turning tool.
Thereby, a flow of cooling fluid directed at the cutting head is further provided through the shower to effect cleaning of the cutting chips while further providing cooling of the part being cut.
The invention has the beneficial effects that: good positioning and elastic clamping effects on the turning tool are achieved through the upper clamping piece and the lower clamping piece, and debugging and accurate positioning are avoided in the rapid clamping process. Further each structure through cooling line realizes the whole everywhere even, accurate cooling effect to the lathe tool. Further go up the holder, down the holder and go up the cooling chamber, the cooperation structure between the cooling chamber further strengthens effect and cooling heat conduction effect when holistic clamping. Further structure through coolant pump and coolant liquid case provides good temperature control effect for the lathe tool can be in good operating condition.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the upper and lower tool apron of the present invention;
FIG. 3 is a schematic side cross-sectional view of the upper and lower blade seats of the present invention;
FIG. 4 is a schematic diagram of a top view of the turning tool of the present invention;
FIG. 5 is a schematic view of the structure of the secondary cooling chamber of the present invention;
the items in the figure are respectively: 2100 upper tool apron, 2110 guide part, 2200 lower tool apron, 2300 installation cavity, 2310 installation opening, 2400 cooling pipeline, 2410 upper cooling cavity, 2411 cooling groove, 2420 lower cooling cavity, 2421 auxiliary cooling cavity, 2422 spray pipe, 2430 cooling surface, 2440 cooling liquid pump, 2450 cooling liquid tank, 2451 temperature control device, 2452 filtering device, 2510 upper clamping piece, 2511 elastic part, 2512 cooling ridge, 2513 connecting part, 2520 lower clamping piece, 2521 positioning hole, 2522 positioning piece and 2523 heat-conducting glue.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 1, 2, 3, 4, and 5, a cutter quick-assembly cooling structure for a numerically controlled lathe includes an upper cutter base 2100 and a lower cutter base 2200 mounted on a window in an up-down opposite stacking manner, wherein the lower cutter base 2200 is fixedly mounted on the window, the upper cutter base 2100 is movably connected to the lower cutter base 2200 through a guide rod, and a quick chuck (the quick chuck is a commercially available general device) for pushing the upper cutter base 2100 to clamp the lower cutter base 2200 is further provided on the lathe. The upper tool apron 2100 and the lower tool apron 2200 enclose to form an installation cavity 2300 which is provided with an installation opening 2310 on one horizontal side and used for clamping a turning tool. The integral structure further comprises a cooling pipeline 2400, the cooling pipeline 2400 comprises an upper cooling cavity 2410 and a lower cooling cavity 2420 which are respectively arranged on the upper tool apron 2100 and the lower tool apron 2200, the upper cooling cavity 2410 and the lower cooling cavity 2420 are copper cavities and are used for containing cooling liquid and realizing rapid heat conduction, the upper cooling cavity 2410 and the lower cooling cavity 2420 are provided with cooling surfaces 2430 exposed on opposite surfaces of the upper tool apron 2100 and the lower tool apron 2200, an upper clamping piece 2510 and a lower clamping piece 2520 which are connected to the cooling surfaces 2430 are respectively arranged on the upper tool apron 2100 and the lower tool apron 2200 through screwing or clamping, and the upper clamping piece 2510 and the lower clamping piece 2520 are made of spring steel sheets and have certain elasticity. When the lathe tool is clamped between the upper tool post 2100 and the lower tool post 2200, the upper clamping piece 2510 elastically deforms and stops against the upper surface thereof. The upper holder 2510 and the lower holder 2520 are used for holding the lathe tool, and the lathe tool is rapidly clamped through elastic deformation of the upper holder 2510. Further, the upper clamping piece 2510 and the lower clamping piece 2520 transfer heat of the turning tool to the upper cooling cavity 2410 and the lower cooling cavity 2420 through contact with the cooling surface 2430, and further realize outward transfer of the heat through the cooling pipeline 2400, so that cooling of the turning tool is realized. Temperature sensors electrically connected with the temperature control device 2451 are arranged in the cooling pipeline 2400, the upper cooling cavity 2410, the lower cooling cavity 2420 and the cooling liquid tank 2450, so that temperature values of all parts can be obtained through real-time temperature detection, and the integral temperature regulation operation is controlled through the temperature values.
In this embodiment, the lower clamping member 2520 is formed with a plurality of positioning holes 2521, and the positioning holes 2521 may be distributed in an array or distributed along a line of a plurality of common lathe tool clamping direction angles. The positioning hole 2521 is detachably connected to a square positioning element 2522 protruding from the surface of the lower clamping element 2520 by inserting, and at least one side surface of the turning tool abuts against the positioning element 2522. The stop positioning of the turning tool is realized by arranging the positioning part 2522, and the plurality of positioning holes 2521 enable the position of the positioning part 2522 to be adjusted, so that the position, the angle and the like of the turning tool stopped thereon can be adjusted through the position arrangement of the positioning part 2522. In the context of high volume continuous machining of a single configuration of parts, installation may be conveniently achieved by positioning the location 2522 so that no additional adjustment is required each time the tool is changed.
In this embodiment, the upper clamp 2510 includes an elastic portion 2511 having two small arcuate bends and a connecting portion 2513 provided at both ends of the elastic portion 2511. A flat plate structure with the width larger than that of the turning tool is arranged between the bow bends, and the bow extension direction of the elastic part 2511 corresponds to the installation opening 2310. The upper clamp 2510 elastically positions and mounts the lathe tool through the arch structure of the elastic part 2511. When the lathe tool was installed, the installation cavity 2300 was impressed the lathe tool through installing port 2310 edgewise, and the top and the elastic component 2511 contact action of lathe tool were pressed it and, the elastic force of elastic component 2511 realized pressing from both sides the preliminary tight to the lathe tool this moment, made it can not rock after ending the setting element. Further, when the quick chuck presses the upper tool apron 2100, the elastic portion 2511 is further clamped to the turning tool, and a clamping state capable of bearing turning operation is realized.
In this embodiment, a guide portion 2110 is further welded to the surface of the upper tool holder 2100, the connecting portion 2513 is nested in the guide portion 2110, the guide portion 2110 is a through hole in an ear-shaped structure corresponding to the nested connecting portion 2513, and the length of the connecting portion 2513 is longer than that of the guide portion 2110. During the pressing process of the elastic portion 2511, the deformation amount of the elastic portion 2511 moving to both sides appears as the connecting portion 2513 passing through the guide portion 2110, and the non-interference operation is realized.
In this embodiment, an inner concave cooling groove 2411 is formed on the surface of the housing of the upper cooling cavity 2410, and a cooling ridge 2512 extending into the cooling groove 2411 is disposed inside the elastic part 2511. The extension directions of the cooling groove 2411 and the cooling ridge 2512 correspond to the mounting opening 2310, and on one hand, a larger contact area is realized through the structure that the cooling groove 2411 extends into the cooling ridge 2512, so that the heat of the turning tool is more effectively transferred to the upper cooling cavity 2410; on the other hand, by the cooperation of the cooling grooves 2411 and the cooling ridges 2512, when the elastic part 2511 is deformed by a turning tool, the elastic part 2511 has a certain guiding function and a certain movement direction control function, and the extending directions of the elastic part and the elastic part are set so that interference does not occur. Solid heat-conducting glue can be filled between the cooling grooves 2411 and the cooling ridges 2512 to improve the heat-conducting property.
In this embodiment, a heat conductive glue 2523 is coated between the lower holder 2520 and the cooling surface 2430 on the surface of the lower cooling cavity 2420 to fill the gap. The heat conduction efficiency is higher when the lathe tool conducts heat downwards.
In this embodiment, the upper cooling chamber 2410 and the lower cooling chamber 2420 are commonly communicated with a cooling liquid pump 2440 through a cooling pipeline 2400. The upper cooling chamber 2410 and the lower cooling chamber 2420 are simultaneously supplied with the cooling liquid by the cooling liquid pump 2440 and circulated. Wherein the lower cooling chamber 2420 is a one-way pipeline when being connected with a spray pipe 2422 described below, and the cooling liquid pump 2440 meets the operation of the lower cooling chamber by supplementing cooling liquid at regular time.
In this embodiment, the cooling device further includes a cooling liquid tank 2450 for accommodating a cooling liquid pump 2440, wherein the cooling liquid tank 2450 is filled with cooling liquid and is provided with a temperature control device 2451 and a filter 2452. The temperature control device 2451 is a heat pipe capable of adjusting the temperature, and is used for adjusting the temperature of the cooling liquid, especially for cooling the cooling liquid which flows back and absorbs the heat of the turning tool; in some extreme cases, such as extreme cold, the turning tool may be damaged during loading during turning operation due to overcooling cold shortness, and the temperature control device 2451 may provide a certain temperature of cooling liquid to provide a certain amount of heat to the turning tool via the cooling pipeline 2400, so as to reduce the problems of cold shortness, cold deformation and the like. The filtering device 2452 is a fine metal mesh structure which is positioned at the end of the cooling pipeline 2400 and is installed at the water inlet of the cooling liquid pump 2440, and can effectively filter impurities which affect normal flow in the pipeline, such as caking and the like possibly generated in long-term use of the cooling liquid.
In this embodiment, the side surface of the lower cooling cavity 2420 extends to form an auxiliary cooling cavity 2421 which is communicated with the lower cooling cavity 2420, the connection end of the auxiliary cooling cavity 2421 and the lower cooling cavity 2420 is a soft sleeve or a folding-resistant metal tube, and the surface of the auxiliary cooling cavity 2421, which points to the turning tool, is a plane and is attached to the surface of the turning tool through an elastic buckle structure arranged on the side surface of the plane. Further improve the area of contact with the lathe tool, especially improve the area of contact with the proximity of the tool bit that bears the weight of the highest, the heat production is the most, further improve the refrigerated efficiency of heat dissipation.
In this embodiment, the side surface of the auxiliary cooling cavity 2421 is connected with a spray pipe 2422 in a penetrating manner, and the end part of the spray pipe 2422 points to the tool bit of the turning tool. A further flow of cooling fluid directed at the tool bit is provided by showers 2422 to effect cleaning of the cutting debris while further providing cooling of the part being cut. And because it has the directive property setting of pointing to the part from the lathe tool, the coolant liquid can not splash and cause the pollution that needs the clearance on the lathe tool.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention fall into the protection scope of the present invention, and the technical contents of the present invention which are claimed are all described in the claims.
Claims (7)
1. The cutter fast-assembly cooling structure of the numerical control lathe is characterized by comprising an upper cutter seat (2100) and a lower cutter seat (2200) which are oppositely overlapped up and down, wherein the upper cutter seat (2100) and the lower cutter seat (2200) are enclosed to form an installation cavity (2300) which is provided with an installation opening (2310) at one side and used for clamping a turning tool, the cooling pipeline (2400) comprises an upper cooling cavity (2410) and a lower cooling cavity (2420) which are respectively arranged on the upper cutter seat (2100) and the lower cutter seat (2200), the upper cooling cavity (2410) and the lower cooling cavity (2420) are provided with cooling surfaces (2430) exposed on the opposite surfaces of the upper cutter seat (2100) and the lower cutter seat (2200), an upper clamping piece (2510) and a lower clamping piece (2520) which are connected with the cooling surfaces (2430) are respectively arranged on the upper cutter seat (2100) and the lower cutter seat (2200), and the upper clamping piece (2510) elastically deforms and stops the turning tool when the cutter seat (2510) is clamped between the upper cutter seat (2100) and the lower cutter seat (2200), and the upper clamping piece (2510) is pressed against the turning tool An upper surface; the upper clamping piece (2510) comprises an elastic part (2511) with at least one bow-shaped bend and connecting parts (2513) arranged at two ends of the elastic part (2511), and the bow-shaped extending direction of the elastic part (2511) corresponds to the mounting opening (2310); the surface of the upper tool apron (2100) is further provided with a guide part (2110), the connecting part (2513) is nested in the guide part (2110), the guide part (2110) is a through hole correspondingly nested in the connecting part (2513), and the length of the connecting part (2513) is longer than that of the guide part (2110); the surface of the shell of the upper cooling cavity (2410) is provided with a cooling groove (2411), and the inner side of the elastic part (2511) is provided with a cooling ridge (2512) extending into the cooling groove (2411).
2. The quick-assembly cooling structure for the cutter of the numerically controlled lathe according to claim 1, wherein a plurality of positioning holes (2521) are formed in the lower clamping member (2520), the positioning holes (2521) are detachably connected with positioning members (2522) protruding from the surface of the lower clamping member (2520), and at least one side surface of the turning tool abuts against the positioning members.
3. The cutter fast-assembly cooling structure of the numerically controlled lathe as claimed in claim 1, wherein a thermally conductive glue (2523) is disposed between the lower clamping member (2520) and the surface of the lower cooling cavity (2420).
4. The cutter fast-assembly cooling structure of the numerically controlled lathe according to claim 1, wherein the upper cooling cavity (2410) and the lower cooling cavity (2420) are communicated with a cooling liquid pump (2440) through a cooling pipeline (2400).
5. The cutter fast-assembling cooling structure of the numerical control lathe as claimed in claim 4, further comprising a coolant tank (2450) for accommodating the coolant pump (2440), wherein a temperature control device (2451) and a filtering device (2452) are arranged in the coolant tank (2450).
6. The cutter fast-assembly cooling structure of the numerically controlled lathe according to claim 1, characterized in that a secondary cooling cavity (2421) extends from the side of the lower cooling cavity (2420), and the surface of the secondary cooling cavity (2421) is attached to the surface of the turning tool in a fitting manner.
7. The cutter fast-assembly cooling structure of the numerical control lathe is characterized in that a spraying pipe (2422) is connected to the side surface of the auxiliary cooling cavity (2421), and the end part of the spraying pipe (2422) points to the cutter head of the turning tool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110141785.4A CN112828325B (en) | 2021-02-02 | 2021-02-02 | Cutter fast-assembling cooling structure of numerical control lathe |
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| CN202110141785.4A CN112828325B (en) | 2021-02-02 | 2021-02-02 | Cutter fast-assembling cooling structure of numerical control lathe |
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| CN112828325B true CN112828325B (en) | 2022-06-10 |
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| CN113478294A (en) * | 2021-07-19 | 2021-10-08 | 张国庆 | Cutter fixing device with heat dissipation function |
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| CH707123A2 (en) * | 2012-10-25 | 2014-04-30 | Utilis Ag | Clamping device with a coolant channel for cooling of machining tools in lathes. |
| EP3023179B1 (en) * | 2014-11-18 | 2020-04-08 | Walter Ag | Blade and tool for grooving and parting |
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| CN202685547U (en) * | 2012-07-20 | 2013-01-23 | 上宇科技有限公司 | Rapid scraper replacing device of scraper holder |
| CN102825277A (en) * | 2012-08-30 | 2012-12-19 | 无锡易通精密机械股份有限公司 | Outer diameter processing and fixing tool apron with cooling function |
| CN203197595U (en) * | 2013-02-26 | 2013-09-18 | 固得钛企业股份有限公司 | CNC tool apron having shakeproof function |
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