CN106312774B - A kind of section bar positioner - Google Patents
A kind of section bar positioner Download PDFInfo
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- CN106312774B CN106312774B CN201610687977.4A CN201610687977A CN106312774B CN 106312774 B CN106312774 B CN 106312774B CN 201610687977 A CN201610687977 A CN 201610687977A CN 106312774 B CN106312774 B CN 106312774B
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- 238000005520 cutting process Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
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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
- B24B41/02—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
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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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
本发明公开了一种型材定位装置，所述的装置包括:工作面板其上加工有通孔，通孔上装配有起索具支撑作用的支撑架，其横梁上安装有弹簧，连接于工作面板，并穿过弹簧上的底圈的索具，所述的工作面板中部加工有刀具避位槽，底部安装有起支撑作用的支撑杆，放置于地上起索具长度调节的踏板，这样的设置，通过索具的一端固定在工作面板上，当放置好待切割工件时，踩下踏板，这样使索具受拉绷紧，对工件进行压迫，从而对工件施加竖直向下的作用力。
The invention discloses a profile positioning device. The device comprises: a working panel is processed with a through hole, the through hole is equipped with a support frame for supporting the rigging, and a spring is installed on the crossbeam, which is connected to the working panel , and pass through the rigging of the bottom ring on the spring, the middle part of the working panel is processed with a tool avoidance groove, and the bottom is equipped with a supporting rod that plays a supporting role, and is placed on the ground to act as a pedal for adjusting the length of the rigging. Such a setting , fixed on the working panel by one end of the rigging, when the workpiece to be cut is placed, step on the pedal, so that the rigging is stretched and tightened, compressing the workpiece, thereby exerting a vertical downward force on the workpiece.
Description
本发明为申请号为2014106947541 申请日为2014年11月27日，发明名称为：一种型材切割机索具定位装置 的分案申请。The present invention is that the application number is 2014106947541, the filing date is November 27, 2014, and the title of the invention is: a divisional application of a profile cutting machine rigging positioning device.
的分案申请divisional application
技术领域technical field
本发明属于机械加工领域，特别涉一种型材切割机装置。The invention belongs to the field of mechanical processing, in particular to a profile cutting machine device.
背景技术Background technique
型材切割机采用单相交流串励电动机为动力，靠通过传动机构驱动平形砂轮片切割金属工具，具有安全可靠、劳动强度低、生产效率高、切断面平整光滑等优点，适用于交流50/60Hz，额定电压220V。广泛用于圆形钢管、异形钢管、铸铁管、圆钢、槽钢、角钢、扁钢等型材进行切割加工型材切割机由串励电动机、传动机构、护罩机架、底座及可转夹钳等组成。单相交流电动机根据定、转子与对地有无附加绝缘分为单绝缘型材切割机和双重绝缘切割机。 夹持工件的夹钳钳口与砂轮轴间的夹角可在左、右0到45度任意调节，有的产品右位置可在0到30度间任意调节。 型材切割机采用的平行砂轮为纤维增强树脂薄片砂轮，其直径不大于406mm，额定线速度不大于80m/s，可见型材切割机的应用非常普遍，目前来说，一般切割操作时，是直接将待切割工件置于刀具之下进行切割，无其他的专用夹具，有的切割机是配置有工作面板的，那样的机型的话，价格偏高，而且对于小尺寸的工件来说操作非常不便，而无夹具的切割机在实际使用中，有时候单人操作时对于待切割工件不便于定位，或者定位困难，造成切割质量不高，所以现在面临的问题就是，一是待切割工件定位不准，二就是夹持器具的操作非常复杂使得加工效率低下。The profile cutting machine is powered by a single-phase AC series motor, and cuts metal tools by driving the flat grinding wheel through the transmission mechanism. It has the advantages of safety, reliability, low labor intensity, high production efficiency, and smooth cutting surface. It is suitable for AC 50/60Hz , Rated voltage 220V. Widely used for cutting and processing round steel pipes, special-shaped steel pipes, cast iron pipes, round steel, channel steel, angle steel, flat steel and other profiles and so on. Single-phase AC motors are divided into single-insulation profile cutting machines and double-insulation cutting machines according to whether there is additional insulation between the stator and rotor and the ground. The angle between the jaws of the clamp clamping the workpiece and the grinding wheel shaft can be adjusted arbitrarily from 0 to 45 degrees on the left and right, and the right position of some products can be adjusted arbitrarily from 0 to 30 degrees. The parallel grinding wheel used by the profile cutting machine is a fiber-reinforced resin sheet grinding wheel, its diameter is not greater than 406mm, and the rated linear speed is not greater than 80m/s. It can be seen that the application of the profile cutting machine is very common. At present, in general cutting operations, it is directly The workpiece to be cut is cut under the cutter without other special fixtures. Some cutting machines are equipped with a working panel. Such models are expensive, and it is very inconvenient to operate for small-sized workpieces. However, in the actual use of the cutting machine without fixtures, sometimes it is inconvenient or difficult to locate the workpiece to be cut when operated by a single person, resulting in low cutting quality. The second is that the operation of the clamping device is very complicated so that the processing efficiency is low.
发明内容Contents of the invention
本发明的目的在于：提出一种型材定位装置，能够解决上述型材切割机在加工过程中的定位不准确，以及定位操作复杂的问题，而且本装置对装夹的工件无损伤，在一定的尺寸范围内还可以进行多件同时装夹加工。The object of the present invention is to propose a profile positioning device, which can solve the problems of inaccurate positioning and complicated positioning operation of the above-mentioned profile cutting machine, and the device does not damage the clamped workpiece. It is also possible to carry out multiple simultaneous clamping and processing within the range.
本发明的目的通过下述技术方案来实现：The purpose of the present invention is achieved through the following technical solutions:
一种型材定位装置，其特征在于，所述的装置包括:工作面板其上加工有通孔，通孔上装配有起索具支撑作用的支撑架，其横梁上安装有弹簧，连接于工作面板，并穿过弹簧上的底圈的索具，所述的工作面板中部加工有刀具避位槽，底部安装有起支撑作用的支撑杆，放置于地上起索具长度调节的踏板，这样的设置，通过索具的一端固定在工作面板上，当放置好待切割工件时，踩下踏板，这样使索具受拉绷紧，对工件进行压迫，从而对工件施加竖直向下的作用力，使之紧贴于工作面板，此时可将切割机刀具压下，进行切割，这样的方式无需用手去进按压，使操作比较方便且安全，当切割完成时抬起踏板，弹簧使之升起，支撑架上的弹簧也会回弹把索具拉起，此时可方便的卸下切割好的工件。A profile positioning device, characterized in that the device comprises: a working panel is processed with a through hole, the through hole is equipped with a support frame that acts as a sling support, and a spring is installed on the crossbeam, which is connected to the working panel , and pass through the rigging of the bottom ring on the spring, the middle part of the working panel is processed with a tool avoidance groove, and the bottom is equipped with a supporting rod that plays a supporting role, and is placed on the ground to act as a pedal for adjusting the length of the rigging. Such a setting , fixed on the working panel through one end of the rigging, when the workpiece to be cut is placed, step on the pedal, so that the rigging is stretched and tightened, and the workpiece is compressed, thereby exerting a vertical downward force on the workpiece, Make it close to the working panel. At this time, the cutting tool can be pressed down to cut. This method does not need to be pressed by hand, which makes the operation more convenient and safe. When the cutting is completed, lift the pedal, and the spring will lift it up. The spring on the supporting frame will also rebound to pull up the rigging, and the cut workpiece can be easily removed at this time.
作为本发明的进一步改进，所述的通孔在工作面板上平行加工有四排，且行距为100mm，其直径为40mm，这样的设置可以使支撑架具有不同位置的定位孔，可以对不同长度的待切割工件进行加工，而且定位孔和索具穿过孔在一条直线上不会产生剪切的效果。As a further improvement of the present invention, the through holes are processed in four rows in parallel on the working panel, and the row spacing is 100mm, and its diameter is 40mm. Such an arrangement can make the support frame have positioning holes at different positions, and can be used for different lengths. The workpiece to be cut is processed, and the positioning hole and the rigging through the hole will not produce a shearing effect in a straight line.
作为本发明的进一步改进，所述的索具的材质应为质软但无弹性的材料，且其直径应在10-20mm之间，这样的设置可以使其与待切割工件贴合比较紧密，而且定位效果非常确定。As a further improvement of the present invention, the material of the rigging should be a soft but inelastic material, and its diameter should be between 10-20mm. Such an arrangement can make it fit closely with the workpiece to be cut, And the positioning effect is very definite.
作为本发明的进一步改进，所述的踏板与底板间安装有供踏板弹起的弹簧，且其行程不小于100mm，这样的设置可以使踏板能够回弹，当一次固定后能够提供下一次拉紧的功能，而且其行程要求能够满足大多数的待切割型材的尺寸。As a further improvement of the present invention, a spring for the pedal to bounce is installed between the pedal and the bottom plate, and its stroke is not less than 100mm. Such an arrangement can enable the pedal to rebound, and can provide the next tension when it is fixed once. function, and its travel requirements can meet the size of most profiles to be cut.
作为本发明的进一步改进，所述的支撑架与工作面板为可拆卸结构，其两连接部分的配合间隙不大于5mm，这样的设置可以非常方便的调整应对不同尺寸的待切割工件，其配合间隙保证了其装配后不会产生过大的晃动影响切割效果。As a further improvement of the present invention, the support frame and the working panel are detachable structures, and the matching gap between the two connecting parts is not greater than 5mm. Such an arrangement can be adjusted very conveniently to deal with different sizes of workpieces to be cut. It is ensured that the cutting effect will not be affected by excessive shaking after assembly.
作为本发明的进一步改进，所述的刀具避位槽的长度应至少比切割刀具的直径大40mm，深度为贯穿工作面板，这样的设置可以使切割时刀具能够完全的切割不会与面板形成干涉，也能够预防一些误差造成的面板损伤，且能够示出刀具所能切割的范围，便于装夹。As a further improvement of the present invention, the length of the tool avoidance groove should be at least 40 mm larger than the diameter of the cutting tool, and the depth is to penetrate the working panel, so that the tool can completely cut without interfering with the panel during cutting. , can also prevent panel damage caused by some errors, and can show the range that the cutter can cut, which is convenient for clamping.
综上所述，由于采用了上述技术方案，本发明的有益效果是：提出一种型材定位装置，能够解决上述型材切割机在加工过程中的定位不准确，以及定位操作复杂的问题，而且本装置对装夹的工件无损伤，在一定的尺寸范围内还可以进行多件同时装夹加工。To sum up, due to the adoption of the above technical solution, the beneficial effect of the present invention is: a profile positioning device is proposed, which can solve the problems of inaccurate positioning and complicated positioning operation of the above-mentioned profile cutting machine during processing, and the present invention The device does not damage the clamped workpieces, and can also clamp and process multiple pieces at the same time within a certain size range.
附图说明Description of drawings
图1是本发明示意图。Figure 1 is a schematic diagram of the present invention.
图2是索具连接局部示意图。Figure 2 is a partial schematic view of the rigging connection.
图3是支撑架连接局部图。Figure 3 is a partial view of the connection of the support frame.
图中标记：1-工作面板、2-通孔、3-支撑架、4-弹簧、5-支撑杆、6-踏板、7-索具、8-弹簧、9-索具限位块、10-索具拉伸环、11-刀具避位槽。Marks in the figure: 1-work panel, 2-through hole, 3-support frame, 4-spring, 5-support rod, 6-pedal, 7-rigging, 8-spring, 9-rigging limit block, 10 - Rigging tension ring, 11-tool escape slot.
具体实施方式Detailed ways
下面结合附图，对本发明作详细的说明。Below in conjunction with accompanying drawing, the present invention is described in detail.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
如图1至图3所示为本发明一种型材定位装置的实施例，一种型材定位装置，其特征在于，所述的装置包括:工作面板1其上加工有通孔2，通孔2上装配有起索具支撑作用的支撑架3，其横梁上安装有弹簧4，连接于工作面板，并穿过弹簧4上的底圈的索具7，所述的工作面板中部加工有刀具避位槽11，底部安装有起支撑作用的支撑杆5，放置于地上起索具长度调节的踏板6，其工作时，首先将工作面板1与支撑杆5组装好，并调节其高度，使之处于水平的状态，然后将切割机安装定位在工件面板1上，通过刀具避位槽11进行定位，然后根据待切割工件的长度合理的选择通孔2间的距离，然后支撑架3通过配合面31与之形成一种配合关系，此时将索具带有索具限位块9的一端，如图1所示的先后通过工作面板上的通孔2再穿过索具拉伸环10，然后将其穿到工作面板1上的通孔2，这样具有一定的预紧力，可以使索具限位块9和索具7形成一种垂直位置，这样就将一端固定于工件面板1上了，此时弹簧4和踏板上的弹簧8都处于自由状态，索具7被拉起，可以顺利的放入待切割工件，当工件放置妥当后，踩紧踏板6使索具受拉，同时弹簧8受压压缩，弹簧4受到拉伸，使之压紧待切割工件，此时就可以进行切割，切割完成后，松开踏板6，此时弹簧8和弹簧4回复原状，使索具7再次被拉起，从而可以顺利的取下切割完成的工件，所述的通孔2在工作面板1上平行加工有四排，且行距为100mm，其直径为40mm，这样的设置可以使支撑架具有不同位置的定位孔，可以对不同长度的待切割工件进行加工，而且定位孔和索具穿过孔在一条直线上不会产生剪切的效果，所述的索具7的材质应为质软但无弹性的材料，且其直径应在10-20mm之间，这样的设置可以使其与待切割工件贴合比较紧密，而且定位效果非常确定，所述的踏板6与底板间安装有供踏板弹起的弹簧8，且其行程不小于100mm，这样的设置可以使踏板能够回弹，当一次固定后能够提供下一次拉紧的功能，而且其行程要求能够满足大多数的待切割型材的尺寸，所述的支撑架3与工作面板1为可拆卸结构，其两连接部分的配合间隙不大于5mm，这样的设置可以非常方便的调整应对不同尺寸的待切割工件，其配合间隙保证了其装配后不会产生过大的晃动影响切割效果，所述的刀具避位槽11的长度应至少比切割刀具的直径大40mm，深度为贯穿工作面板1，这样的设置可以使切割时刀具能够完全的切割不会与面板1形成干涉，也能够预防一些误差造成的面板损伤，且能够示出刀具所能切割的范围，便于装夹。As shown in Fig. 1 to Fig. 3 is the embodiment of a kind of profile positioning device of the present invention, a kind of profile positioning device, it is characterized in that, described device comprises: working panel 1 is processed with through hole 2 on it, through hole 2 The upper assembly is equipped with a support frame 3 that acts as a rigging support, and a spring 4 is installed on the crossbeam, which is connected to the working panel and passes through the rigging 7 of the bottom ring on the spring 4. The middle part of the working panel is processed with a tool avoidance Bit groove 11, the support bar 5 that plays a supporting role is installed in the bottom, is placed on the pedal 6 that plays the rigging length adjustment on the ground, when it works, at first work panel 1 and support bar 5 are assembled, and adjust its height, make it In a horizontal state, the cutting machine is installed and positioned on the workpiece panel 1, positioned through the tool avoidance groove 11, and then the distance between the through holes 2 is reasonably selected according to the length of the workpiece to be cut, and then the support frame 3 passes through the mating surface 31 forms a kind of cooperative relationship with it, now the sling has an end of the sling stopper 9, as shown in Figure 1, passes through the through hole 2 on the work panel successively and then passes the sling stretching ring 10, Then pass it through the through hole 2 on the work panel 1, so that there is a certain pre-tightening force, which can make the rigging limit block 9 and the rigging 7 form a vertical position, so that one end is fixed on the workpiece panel 1 Now, the spring 4 and the spring 8 on the pedal are all in a free state, the sling 7 is pulled up, and the workpiece to be cut can be smoothly put into it. After the workpiece is placed properly, step on the pedal 6 so that the sling is pulled, and at the same time Spring 8 is pressed and compressed, and spring 4 is stretched to make it compress the workpiece to be cut. At this time, the cutting can be carried out. After the cutting is completed, the pedal 6 is released. It is pulled up again, so that the finished workpiece can be removed smoothly. The through holes 2 are processed in four rows in parallel on the working panel 1, and the row spacing is 100mm, and its diameter is 40mm. Such setting can make the support frame There are positioning holes in different positions, which can process different lengths of workpieces to be cut, and the positioning holes and the rigging passing holes will not produce a shearing effect on a straight line. The material of the rigging 7 should be of high quality. Soft but inelastic material, and its diameter should be between 10-20mm, and such setting can make it fit relatively closely with the workpiece to be cut, and the positioning effect is very definite, and the described pedal 6 and the base plate are provided with a The spring 8 springs up from the pedal, and its stroke is not less than 100mm. This setting can make the pedal bounce back, and when it is fixed once, it can provide the function of tensioning the next time, and its stroke requirements can meet the requirements of most profiles to be cut. Size, the support frame 3 and the working panel 1 are detachable structures, and the matching gap between the two connecting parts is not more than 5mm. This setting can be adjusted very conveniently to deal with different sizes of workpieces to be cut. After assembly, there will be no excessive shaking to affect the cutting effect. The length of the tool avoidance groove 11 should be at least 40mm larger than the diameter of the cutting tool, and the depth is to penetrate the working panel 1. Such an arrangement can make the tool fully The cutting will not interfere with the panel 1, and it can also prevent some errors The damage to the panel caused by it can show the range that the cutter can cut, which is convenient for clamping.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610687977.4A CN106312774B (en) | 2014-11-27 | 2014-11-27 | A kind of section bar positioner |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694754.1A CN104440538B (en) | 2014-11-27 | 2014-11-27 | A profile cutting machine rigging positioning device |
| CN201610687977.4A CN106312774B (en) | 2014-11-27 | 2014-11-27 | A kind of section bar positioner |
Related Parent Applications (1)
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| CN201410694754.1A Division CN104440538B (en) | 2014-11-27 | 2014-11-27 | A profile cutting machine rigging positioning device |
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| CN106312774A CN106312774A (en) | 2017-01-11 |
| CN106312774B true CN106312774B (en) | 2018-03-27 |
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| CN201410694754.1A Expired - Fee Related CN104440538B (en) | 2014-11-27 | 2014-11-27 | A profile cutting machine rigging positioning device |
| CN201610687977.4A Active CN106312774B (en) | 2014-11-27 | 2014-11-27 | A kind of section bar positioner |
| CN201610687981.0A Expired - Fee Related CN106239365B (en) | 2014-11-27 | 2014-11-27 | A kind of section steel cutting machine positioning device |
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| CN201410694754.1A Expired - Fee Related CN104440538B (en) | 2014-11-27 | 2014-11-27 | A profile cutting machine rigging positioning device |
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| CN201610687981.0A Expired - Fee Related CN106239365B (en) | 2014-11-27 | 2014-11-27 | A kind of section steel cutting machine positioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104440538B (en) * | 2014-11-27 | 2017-02-08 | 四川九鼎智远知识产权运营有限公司 | A profile cutting machine rigging positioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310892A (en) * | 1969-06-25 | 1973-03-21 | Richards Foundries Ltd | Work rest for grinding machine |
| CN101412488B (en) * | 2008-12-05 | 2010-10-13 | 中油吉林化建工程股份有限公司 | Air turnover device and method for special-shaped barrel |
| CN202296810U (en) * | 2011-10-26 | 2012-07-04 | 上海宝钢船板加工配送有限公司 | Lifting appliance special for steel tubes |
| CN103551953A (en) * | 2013-11-19 | 2014-02-05 | 烟台通用机械设备制造有限公司 | Profile cutting machine |
| CN203817586U (en) * | 2014-01-27 | 2014-09-10 | 青岛勤德索具有限公司 | Automatic clamp for rigging cutting |
| CN203900337U (en) * | 2014-05-21 | 2014-10-29 | 沈庆大 | Novel double-side clamping device for cutting steel wire rope |
| CN104440538B (en) * | 2014-11-27 | 2017-02-08 | 四川九鼎智远知识产权运营有限公司 | A profile cutting machine rigging positioning device |
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- 2014-11-27 CN CN201410694754.1A patent/CN104440538B/en not_active Expired - Fee Related
- 2014-11-27 CN CN201610687977.4A patent/CN106312774B/en active Active
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Also Published As
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| CN106239365A (en) | 2016-12-21 |
| CN106312774A (en) | 2017-01-11 |
| CN106239365B (en) | 2018-03-02 |
| CN104440538A (en) | 2015-03-25 |
| CN104440538B (en) | 2017-02-08 |
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