WO2022088488A1 - 一种防止金属零件变形的气动夹具 - Google Patents
一种防止金属零件变形的气动夹具 Download PDFInfo
- Publication number
- WO2022088488A1 WO2022088488A1 PCT/CN2020/141681 CN2020141681W WO2022088488A1 WO 2022088488 A1 WO2022088488 A1 WO 2022088488A1 CN 2020141681 W CN2020141681 W CN 2020141681W WO 2022088488 A1 WO2022088488 A1 WO 2022088488A1
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- WIPO (PCT)
- Prior art keywords
- workpiece
- plug
- tapered portion
- pneumatic clamp
- metal parts
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 30
- 239000002184 metal Substances 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- -1 ferrous metals Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Definitions
- the invention relates to the field of metal parts processing, in particular to a pneumatic clamp for preventing deformation of metal parts.
- Non-ferrous metals in a narrow sense, also known as non-ferrous metals, are the collective name for all metals except iron, manganese and chromium. Non-ferrous metals in a broad sense also include non-ferrous alloys. Non-ferrous metals are the basic materials for the development of the national economy. Most industries such as aviation, aerospace, non-ferrous metal rolling technology, machinery manufacturing, electric power, communications, construction, and home appliances are based on non-ferrous metal materials. With the rapid development of modern industry, agriculture and science and technology, non-ferrous metals play an increasingly important role in human development.
- non-ferrous metal parts are generally used in electrical and related industries, they have been widely used in the industry due to their good electrical conductivity, but non-ferrous metals are usually in a state of low hardness, such as copper, aluminum, etc., in It is very easy to produce crushing and deformation during processing. Therefore, the present invention proposes a pneumatic clamp for preventing deformation of metal parts to solve the above problems.
- the purpose of the present invention is to provide a pneumatic clamp for preventing deformation of metal parts, so as to solve the above technical problems.
- a pneumatic clamp for preventing the deformation of metal parts including a support rod and a workpiece
- one side of the support rod is provided with a transmission connection with a first plug.
- One end of the first plug is drivingly connected to the drive motor at the other end of the support rod through the rotating shaft, and the outer side of the first plug is sleeved with a workpiece, wherein the workpiece has an internal hollow cylindrical structure, and the workpiece has a hollow cylindrical structure.
- a second plug is arranged inside the other end, wherein the second plug is threadedly connected with the first plug; a cylinder is provided on one side of the support rod and below the first plug, and the top of the cylinder passes through a telescopic rod
- a positioning block is connected, and one end of the positioning block is connected with an outer clamping mechanism, the outer clamping mechanism is located directly below the workpiece;
- the outer clamping mechanism includes a bottom plate, a connecting plate and an arc clamping piece, the outer clamping mechanism
- the bottom plate is connected with the positioning block, the top of the bottom plate is provided with a connecting plate, both ends of the top of the connecting plate are connected with arc-shaped clamping pieces, the inner side of the arc-shaped clamping piece is provided with grooves, and the grooves are provided with grooves.
- a plurality of balls are connected with the inner ring-shaped transmission, and the arc-shaped clamping piece is just clamped to the outer side of the workpiece.
- the other end of the positioning block is slidably connected with the support rod.
- the first plug includes a first end portion, a first tapered portion and a threaded connecting rod, one end of the first end portion is connected with a first tapered portion, and the first tapered portion is away from One end of the first end is connected with a threaded connecting rod, wherein a threaded hole is opened inside the threaded connecting rod;
- the second plug includes a second end, a second conical part and a screw rod, the second end is One end of the second conical part is connected with a second conical part, and the end of the second conical part away from the second end part is connected with a screw, the screw is just screwed with the threaded hole, and the second end of the second conical part is far away from the second conical part.
- One end of the part is provided with an inner hexagonal screw hole.
- the outer diameter of the first tapered portion toward the direction of the threaded connecting rod is gradually reduced to be the same as the diameter of the threaded connecting rod.
- the maximum outer diameter of the first tapered portion is the same as the inner diameter of the workpiece.
- the first end portion and the second end portion are both cylindrical structures.
- the outer diameter of the second conical portion toward the screw direction is gradually reduced to be the same as the diameter of the screw.
- the maximum outer diameter of the second tapered portion is the same as the inner diameter of the workpiece.
- the pneumatic clamp for preventing the deformation of metal parts provided by the present invention has the following beneficial effects: the present invention provides a pneumatic clamp for preventing the deformation of metal parts. Clamping mechanism, the outer side of the workpiece can be clamped by two arc-shaped clamps on the outer clamping mechanism, and at the same time, balls are arranged inside the arc-shaped clamps, which can assist the workpiece to rotate and ensure that the workpiece is processed in the later stage.
- the first plug and the second plug can squeeze and fix the workpiece from the inside of the workpiece, thereby ensuring that the workpiece is fixed from the inside and outside at the same time, preventing the workpiece The deformation occurs in the later processing, which makes the workpiece more stable.
- the screw can be threadedly connected to the inside of the threaded hole. Therefore, the first plug and the second plug are connected and fixed, and the second plug is rotated, so that the second plug and the conical part of the first plug can fully squeeze the workpiece, so that the workpiece can be stabilized from the inside. It has higher performance and can prevent the workpiece from shaking and slipping.
- FIG. 1 is a schematic structural diagram of a pneumatic clamp for preventing deformation of metal parts according to the present invention.
- FIG. 2 is a schematic three-dimensional structure diagram of the external clamping mechanism of the present invention.
- FIG. 3 is a schematic structural diagram of the workpiece, the first plug and the second plug of the present invention when they are connected.
- FIG. 4 is a cross-sectional view of the workpiece, the first plug and the second plug of the present invention when they are connected.
- Reference numerals 1, support rod; 2, drive motor; 3, positioning block; 4, telescopic rod; 5, cylinder; 6, workpiece; 7, external clamping mechanism; 701, bottom plate; 702, connecting plate; 703, Arc clamp; 704, groove; 705, ball; 8, first plug; 801, first end; 802, first tapered part; 803, threaded connecting rod; 804, threaded hole; 9, The second plug; 901, the inner hexagon screw hole; 902, the second end; 903, the second tapered part; 904, the screw.
- FIG. 1 is a schematic structural diagram of a pneumatic clamp for preventing deformation of metal parts according to the present invention
- FIG. 2 is a Schematic diagram of the three-dimensional structure of the external clamping mechanism of the present invention
- FIG. 3 is a schematic structural diagram of the connection of the workpiece, the first plug and the second plug of the present invention
- FIG. 4 is the connection of the workpiece, the first plug and the second plug of the present invention sectional view of time.
- a pneumatic clamp for preventing deformation of metal parts includes a support rod 1 and a workpiece 6, and is characterized in that: one side of the support rod 1 is provided with a transmission connection with a first plug Head 8, wherein one end of the first plug 8 is connected with the drive motor 2 at the other end of the support rod 1 through a rotating shaft.
- the outer side of the first plug 8 is sleeved with a workpiece 6, wherein the workpiece 6 is an internal hollow cylindrical structure.
- the other end of the workpiece 6 is provided with a second plug 9, wherein the second plug 9 is threadedly connected with the first plug 8; one side of the support rod 1 and located below the first plug 8 is provided with a cylinder 5,
- the top of the cylinder 5 is connected with a positioning block 3 through a telescopic rod 4, and one end of the positioning block 3 is connected with an outer clamping mechanism 7, which is located directly below the workpiece 6;
- the outer clamping mechanism 7 includes a bottom plate 701,
- the connecting plate 702 and the arc-shaped clamping member 703, the bottom plate 701 is connected with the positioning block 3, the top of the bottom plate 701 is provided with the connecting plate 702, and the two ends of the top of the connecting plate 702 are connected with the arc-shaped clamping member 703, the arc-shaped clamping
- the inner side of the piece 703 is provided with a groove 704 , and a plurality of balls 705 are connected in an annular array in the groove 704 .
- the other end of the positioning block 3 is slidably connected to the support rod 1 .
- the first plug 8 includes a first end portion 801 , a first tapered portion 802 and a threaded connecting rod 803 , and one end of the first end portion 801 is connected with a first end portion 801 .
- the tapered portion 802, one end of the first tapered portion 802 away from the first end portion 801 is connected with a threaded connecting rod 803, wherein the threaded connecting rod 803 is provided with a threaded hole 804 inside;
- the second plug 9 includes a second end portion 902, the second conical part 903 and the screw 904, one end of the second end 902 is connected with the second conical part 903, the end of the second conical part 903 away from the second end 902 is connected with the screw 904, the screw 904 is just right In screw connection with the threaded hole 804 , the end of the second end portion 902 away from the second tapered portion 903 is provided with a hexagon socket head screw hole.
- the outer diameter of the first tapered portion 802 toward the direction of the threaded connection rod 803 is gradually reduced to be the same as the diameter of the threaded connection rod 803 .
- the maximum outer diameter of the first tapered portion 802 is the same as the inner diameter of the workpiece 6 .
- both the first end portion 801 and the second end portion 902 are cylindrical structures.
- the outer diameter of the second tapered portion 903 toward the direction of the screw 904 is gradually reduced to be the same as the diameter of the screw 904 .
- the maximum outer diameter of the second tapered portion 903 is the same as the inner diameter of the workpiece 6 .
- the working principle of the present invention is as follows: when in use, the workpiece 6 is first placed on the outside of the threaded connecting rod 803, and then the screw 904 on the second plug 9 is inserted into the workpiece 6, and is threadedly connected to the threaded hole 804.
- the screw 904 is driven to be threadedly connected inside the threaded hole 804, so that the second tapered portion 903 squeezes the inside of the workpiece 6 , until the workpiece 6 is fully fitted with the second tapered portion 903 and the first tapered portion 802, so that the workpiece 6 is squeezed and fixed from both ends; after the workpiece 6 is connected with the two plugs, the air cylinder 5 Drive the positioning block 3 to move up, and then drive the outer clamping mechanism 7 to move up, so that the two arc-shaped clamping members 703 on the outer clamping mechanism 7 are fully fitted with the outer side of the workpiece 6, and the workpiece 6 is to be processed and polished later.
- the drive motor 2 can drive the workpiece 6 to rotate.
- the balls 705 can play an auxiliary role and will not affect the rotation of the workpiece 6 .
Abstract
一种防止金属零件变形的气动夹具，包括支撑杆和工件，支撑杆的一侧传动连接有第一堵头，其中第一堵头的一端通过转轴与位于支撑杆另一端的驱动电机传动连接，第一堵头的外侧套接有工件，其中工件呈内部中空式圆柱形结构。通过在工件的底部设置可自由调节的外夹持机构，通过外夹持机构上的两个弧形夹持件可对工件的外侧进行夹持，同时弧形夹持件内部设置有滚珠，能够辅助工件进行转动，保证工件在后期加工时的稳定性，通过配合第一堵头和第二堵头，第一堵头和第二堵头可从工件的内部对工件进行挤压固定，进而保证工件从内部和外部同时固定，防止工件在后期加工时发生形变，使得工件稳定性更高。
Description
本发明涉及金属零件加工领域，尤其涉及一种防止金属零件变形的气动夹具。
有色金属：狭义的有色金属又称非铁金属，是铁、锰、铬以外的所有金属的统称。广义的有色金属还包括有色合金。有色金属是国民经济发展的基础材料，航空、航天、有色金属压延工艺、机械制造、电力、通讯、建筑、家电等绝大部分行业都以有色金属材料为生产基础。随着现代化工、农业和科学技术的突飞猛进，有色金属在人类发展中的地位愈来愈重要。
但是由于有色金属零件一般用于电气及相关行业，由于自身良好的导电性，在行业中得到了广泛的应用，但是有色金属通常是一种硬度较低的状态，比如铜、铝等等，在加工过程中极易产生压伤以及变形。为此本发明提出一种防止金属零件变形的气动夹具来解决上述问题。
本发明的目的在于提供一种防止金属零件变形的气动夹具，以解决上述技术问题。
本发明为解决上述技术问题，采用以下技术方案来实现：一种防止金属零件变形的气动夹具，包括支撑杆和工件，其特征在于：所述支撑杆的一侧设置有传动连接有第一堵头，其中第一堵头的一端通过转轴与位于支撑杆另一端的驱动电机传动连接，所述第一堵头的外侧套接有工件，其中工件呈内部中空式圆柱形结构，所述工件的另一端内部设置有第二堵头，其中第二堵头与第一堵头螺纹连接；所述支撑杆的一侧且位于第一堵头的下方设置有气缸，所述气缸的顶部通过伸缩杆连接有定位块，且定位块的一端连接有外夹持机构，所述外夹持机构位于工件的正下方；所述外夹持机构包含有底板、连接板和弧形夹持件，所述底板与定位块连接，所述底板的顶部设置有连接板，连接板的顶部两端均连接有弧形夹持件，所述弧形夹持件的内侧开设有凹槽，所述凹槽的内部环形阵列式传动连接有多个滚珠，所述弧形夹持件正好卡合到工件的外侧。
优选的，所述定位块的另一端与支撑杆滑动连接。
优选的，所述第一堵头包含有第一端部、第一锥形部和螺纹连接杆，所述第一端部的一端连接有第一锥形部，所述第一锥形部远离第一端部的一端连接有螺纹连接杆，其中螺纹连接杆的内部开设有螺纹孔；所述第二堵头包含有第二端部、第二锥形部和螺杆，所述第二端部的一端连接有第二锥形部，所述第二锥形部远离第二端部的一端连接有螺杆，所述螺杆正好与螺纹孔螺纹连接，所述第二端部的远离第二锥形部的一端开设有内六角螺孔。
优选的，所述第一锥形部朝向螺纹连接杆方向的外径逐渐缩小至与螺纹连接杆的直径相同。
优选的，所述第一锥形部的最大外径与工件的内径相同。
优选的，所述第一端部与第二端部均为圆柱形结构。
优选的，所述第二锥形部朝向螺杆方向的外径逐渐缩小至与螺杆的直径相同。
优选的，所述第二锥形部的最大外径与工件的内径相同。
与相关技术相比较，本发明提供的一种防止金属零件变形的气动夹具具有如下有益效果：本发明提供一种防止金属零件变形的气动夹具，首先，通过在工件的底部设置可自由调节的外夹持机构，通过外夹持机构上的两个弧形夹持件可对工件的外侧进行夹持，并同时弧形夹持件内部设置有滚珠，能够辅助工件进行转动，保证工件在后期加工时的稳定性，通过配合第一堵头和第二堵头，第一堵头和第二堵头可从工件的内部对工件进行挤压固定，进而保证工件从内部和外部同时固定，防止工件在后期加工时发生形变，使得工件稳定性更高，其次，通过在第一堵头的内部开设有螺纹孔，并在第二堵头的一端设置有螺杆，螺杆可螺纹连接到螺纹孔内部，从而将第一堵头和第二堵头进行连接固定，且转动第二堵头，可使得第二堵头和第一堵头的锥形部对工件进行充分挤压，使得工件从内部的稳定性更高，且能够防止工件晃动，滑落。
图1为本发明一种防止金属零件变形的气动夹具的结构示意图。
图2为本发明外夹持机构的立体结构示意图。
图3为本发明工件、第一堵头和第二堵头连接时的结构示意图。
图4为本发明工件、第一堵头和第二堵头连接时的剖视图。
附图标记：1、支撑杆；2、驱动电机；3、定位块；4、伸缩杆；5、气缸；6、工件；7、外夹持机构；701、底板；702、连接板；703、弧形夹持件；704、凹槽；705、滚珠；8、第一堵头；801、第一端部；802、第一锥形部；803、螺纹连接杆；804、螺纹孔；9、第二堵头；901、内六角螺孔；902、第二端部；903、第二锥形部；904、螺杆。
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施例和附图，进一步阐述本发明，但下述实施例仅仅为本发明的优选实施例，并非全部。基于实施方式中的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得其它实施例，都属于本发明的保护范围。
下面结合附图描述本发明的具体实施例，请结合参阅图1、图2、图3以及图4，其中，图1为本发明一种防止金属零件变形的气动夹具的结构示意图；图2为本发明外夹持机构的立体结构示意图；图3为本发明工件、第一堵头和第二堵头连接时的结构示意图；图4为本发明工件、第一堵头和第二堵头连接时的剖视图。
在具体实施过程中，如图1-4所示，一种防止金属零件变形的气动夹具，包括支撑杆1和工件6，其特征在于：支撑杆1的一侧设置有传动连接有第一堵头8，其中第一堵头8的一端通过转轴与位于支撑杆1另一端的驱动电机2传动连接，第一堵头8的外侧套接有工件6，其中工件6呈内部中空式圆柱形结构，工件6的另一端内部设置有第二堵头9，其中第二堵头9与第一堵头8螺纹连接；支撑杆1的一侧且位于第一堵头8的下方设置有气缸5，气缸5的顶部通过伸缩杆4连接有定位块3，且定位块3的一端连接有外夹持机构7，外夹持机构7位于工件6的正下方；外夹持机构7包含有底板701、连接板702和弧形夹持件703，底板701与定位块3连接，底板701的顶部设置有连接板702，连接板702的顶部两端均连接有弧形夹持件703，弧形夹持件703的内侧开设有凹槽704，凹槽704的内部环形阵列式传动连接有多个滚珠705，弧形夹持件703正好卡合到工件6的外侧。
在具体实施过程中，如图1-4所示，定位块3的另一端与支撑杆1滑动连接。
在具体实施过程中，如图1-4所示，第一堵头8包含有第一端部801、第一锥形部802和螺纹连接杆803，第一端部801的一端连接有第一锥形部802，第一锥形部802远离第一端部801的一端连接有螺纹连接杆803，其中螺纹连接杆803的内部开设有螺纹孔804；第二堵头9包含有第二端部902、第二锥形部903和螺杆904，第二端部902的一端连接有第二锥形部903，第二锥形部903远离第二端部902的一端连接有螺杆904，螺杆904正好与螺纹孔804螺纹连接，第二端部902的远离第二锥形部903的一端开设有内六角螺孔。
在具体实施过程中，如图1-4所示，第一锥形部802朝向螺纹连接杆803方向的外径逐渐缩小至与螺纹连接杆803的直径相同。
在具体实施过程中，如图1-4所示，第一锥形部802的最大外径与工件6的内径相同。
在具体实施过程中，如图1-4所示，第一端部801与第二端部902均为圆柱形结构。
在具体实施过程中，如图1-4所示，第二锥形部903朝向螺杆904方向的外径逐渐缩小至与螺杆904的直径相同。
在具体实施过程中，如图1-4所示，第二锥形部903的最大外径与工件6的内径相同。
本发明的工作原理如下：使用时，首先将工件6放置到螺纹连接杆803的外侧，然后通过将第二堵头9上的螺杆904伸入到工件6内部，并螺纹连接到螺纹孔804的内部，通过将内六角螺杆与内六角螺孔901连接，并转动内六角螺杆，从而带动螺杆904在螺纹孔804的内部螺纹连接，从而使得第二锥形部903对工件6的内部进行挤压，直至工件6与第二锥形部903和第一锥形部802充分贴合，从而对工件6从两端进行挤压固定；待工件6与两个堵头连接好之后，然后通过气缸5带动定位块3上移，进而带动外夹持机构7上移，从而使得外夹持机构7上的两个弧形夹持件703与工件6的外侧充分贴合，待工件6进行后期加工打磨抛光等处理时，驱动电机2可带动工件6进行转动，工件6转动的时候，滚珠705可起到辅助作用，不会影响到工件6的转动。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的仅为本发明的优选例，并不用来限制本发明，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (8)
- 一种防止金属零件变形的气动夹具，包括支撑杆（1）和工件（6），其特征在于：所述支撑杆（1）的一侧设置有传动连接有第一堵头（8），其中第一堵头（8）的一端通过转轴与位于支撑杆（1）另一端的驱动电机（2）传动连接，所述第一堵头（8）的外侧套接有工件（6），其中工件（6）呈内部中空式圆柱形结构，所述工件（6）的另一端内部设置有第二堵头（9），其中第二堵头（9）与第一堵头（8）螺纹连接；所述支撑杆（1）的一侧且位于第一堵头（8）的下方设置有气缸（5），所述气缸（5）的顶部通过伸缩杆（4）连接有定位块（3），且定位块（3）的一端连接有外夹持机构（7），所述外夹持机构（7）位于工件（6）的正下方；所述外夹持机构（7）包含有底板（701）、连接板（702）和弧形夹持件（703），所述底板（701）与定位块（3）连接，所述底板（701）的顶部设置有连接板（702），连接板（702）的顶部两端均连接有弧形夹持件（703），所述弧形夹持件（703）的内侧开设有凹槽（704），所述凹槽（704）的内部环形阵列式传动连接有多个滚珠（705），所述弧形夹持件（703）正好卡合到工件（6）的外侧。
- 根据权利要求1所述的一种防止金属零件变形的气动夹具，其特征在于：所述定位块（3）的另一端与支撑杆（1）滑动连接。
- 根据权利要求1所述的一种防止金属零件变形的气动夹具，其特征在于：所述第一堵头（8）包含有第一端部（801）、第一锥形部（802）和螺纹连接杆（803），所述第一端部（801）的一端连接有第一锥形部（802），所述第一锥形部（802）远离第一端部（801）的一端连接有螺纹连接杆（803），其中螺纹连接杆（803）的内部开设有螺纹孔（804）；所述第二堵头（9）包含有第二端部（902）、第二锥形部（903）和螺杆（904），所述第二端部（902）的一端连接有第二锥形部（903），所述第二锥形部（903）远离第二端部（902）的一端连接有螺杆（904），所述螺杆（904）正好与螺纹孔（804）螺纹连接，所述第二端部（902）的远离第二锥形部（903）的一端开设有内六角螺孔。
- 根据权利要求3所述的一种防止金属零件变形的气动夹具，其特征在于：所述第一锥形部（802）朝向螺纹连接杆（803）方向的外径逐渐缩小至与螺纹连接杆（803）的直径相同。
- 根据权利要求3所述的一种防止金属零件变形的气动夹具，其特征在于：所述第一锥形部（802）的最大外径与工件（6）的内径相同。
- 根据权利要求3所述的一种防止金属零件变形的气动夹具，其特征在于：所述第一端部（801）与第二端部（902）均为圆柱形结构。
- 根据权利要求3所述的一种防止金属零件变形的气动夹具，其特征在于：所述第二锥形部（903）朝向螺杆（904）方向的外径逐渐缩小至与螺杆（904）的直径相同。
- 根据权利要求3所述的一种防止金属零件变形的气动夹具，其特征在于：所述第二锥形部（903）的最大外径与工件（6）的内径相同。
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| CN209830927U (zh) * | 2019-01-30 | 2019-12-24 | 武汉银海铜业有限公司 | 一种铜管外螺纹加工用夹具 |
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| JPH03256669A (ja) * | 1990-03-06 | 1991-11-15 | Teikoku Piston Ring Co Ltd | 薄肉円筒体の外周研磨加工治具 |
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