WO2022142202A1 - Hydraulic automatic expansion clamp suitable for clamping of special-shaped hole and special-shaped shaft - Google Patents

Hydraulic automatic expansion clamp suitable for clamping of special-shaped hole and special-shaped shaft Download PDF

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Publication number
WO2022142202A1
WO2022142202A1 PCT/CN2021/102594 CN2021102594W WO2022142202A1 WO 2022142202 A1 WO2022142202 A1 WO 2022142202A1 CN 2021102594 W CN2021102594 W CN 2021102594W WO 2022142202 A1 WO2022142202 A1 WO 2022142202A1
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Prior art keywords
shaped
special
hydraulic
mandrel body
expansion
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PCT/CN2021/102594
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French (fr)
Chinese (zh)
Inventor
孟宪凯
周建忠
王匀
陈杰
王阿军
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江苏罡阳股份有限公司
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Priority claimed from CN202011616255.2A external-priority patent/CN112719962B/en
Application filed by 江苏罡阳股份有限公司 filed Critical 江苏罡阳股份有限公司
Publication of WO2022142202A1 publication Critical patent/WO2022142202A1/en

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    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40—Expansion mandrels
    • B23B31/42—Expansion mandrels characterised by features relating primarily to remote control of the gripping means
    • 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
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/04—Work clamping means using fluid means or a vacuum
    • 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
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material

Definitions

  • the invention relates to a mechanical fastening device, more specifically, a hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts.
  • the fixture In the process of mold machinery manufacturing, the fixture is used to fix the processing object, so that the processing object is in an accurate position for processing or testing.
  • the quality of the fixture design also directly affects the processing efficiency and processing accuracy of the processing object, especially for the processing object with high processing precision requirements, which puts forward higher requirements for the design of the fixture.
  • the three-jaw chuck is usually used to clamp the outer circle of thin-walled parts to turn the inner hole or increase the process rib to process the outer circle of the part.
  • the processing process is very easy to deform.
  • the existing technology as a processing method has the following defects: 1.
  • the deformation of the part itself will affect the dimensional accuracy and shape accuracy of the part, and adding process ribs will greatly increase the difficulty of cutting the inner hole. 2. Due to the thin wall of the part, the cutting heat will cause thermal deformation of the part, making it difficult to control the size of the part; 3. Under the action of the cutting force, especially the back force, it is easy to generate vibration, noise and deformation, which directly affects the size of the part. Accuracy, Geometric Tolerance and Surface Roughness.
  • Chinese invention CN205290660U relates to an expansion fixture for polishing shaft sleeve structural parts.
  • the invention mainly uses a hexagonal screw with a taper and a fixture with an expandable thin-walled part to cooperate to achieve the expansion and clamping of the inner wall of the hole type parts.
  • the purpose of the invention is that the operation and positioning of the invention are convenient, the operation is simple, the disassembly of the parts is convenient, and the work efficiency is improved.
  • the positioning of the new hole-type parts depends on a fixture, and the length of the fixture seat limits the clamping of the hole-type parts using the new type, and it is not convenient to locate and clamp the hole-type parts with irregular inner holes. Such as stepped hole parts.
  • Chinese invention CN210164767U discloses a hydraulic expansion screw.
  • the invention mainly utilizes expansion heads located in a plurality of expansion holes of a metal sleeve to move radially on the inner wall of the accommodating cavity by virtue of the hydraulic medium being installed in the accommodating cavity, so as to adjust the holes in the cavity.
  • the inner wall of the part is clamped, the invention is similar to the hydraulic expansion clamp. Because the stress deformation position is evenly distributed on the circumference of the screw hydraulic expansion tube, the pressure is uniform, the screw center is not easy to deviate when the screw is tightened, and the expansion screw is firmer than the conventional expansion screw after expansion and is not easy to loosen or fall off.
  • this invention uses a rotating hydraulic screw to move the hydraulic screw into the accommodating cavity to adjust the hydraulic pressure in the accommodating cavity so that the expansion screw protrudes from the expansion hole.
  • This process is not automated and will have a certain impact on the clamping efficiency. As a result, the production efficiency will be affected.
  • the invention mainly clamps the middle part of the part, which will cause the force to be unbalanced on the part and affect the machining accuracy.
  • Chinese invention CN209664484U provides an expansion clamp, which mainly utilizes the relative movement between the wedge-shaped moving block and the conical surface to expand and clamp the inner wall of the hole-like parts.
  • the invention can automatically adjust the size of the clamp and is suitable for parts with different inner hole sizes. , there is no need to manually adjust the size of the fixture, and the adaptability of the fixture to parts of different sizes is enhanced.
  • the structure of the invention is too complicated, and the automation is realized by means of a machine tool instead of a fixture or the part itself, and the invention is to clamp one end of a hole-type part, which will have a great impact on the machining accuracy of the part.
  • the invention mainly solves the technical problems existing in the prior art, thereby providing a hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts.
  • a hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts characterized in that the hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts includes a base, and the base is provided with a The disassembled connecting block, the connecting block is provided with a conical expansion sleeve and a cross-type piston, the conical expansion sleeve is in contact with the bottom of the cross-type piston, and the conical expansion sleeve is in contact with the bottom of the cross-type piston.
  • a mandrel body is sleeved, a return spring is arranged between the mandrel body and the cross-shaped piston, and the top piston of the cross-shaped piston is arranged in the central oil groove of the mandrel body, so the
  • the central oil tank is equipped with a hydraulic medium and a leak-proof gasket, and the inner wall of the mandrel body is provided with a number of hydraulic expansion heads, and the hydraulic expansion heads are along the radial direction and axis of the mandrel body. distributed in the radial direction, wherein, under the action of the hydraulic medium, the hydraulic expansion head can move in the radial direction and generate different displacements.
  • the base and the connecting block are provided with a plurality of threaded holes, and the threaded holes are connected by bolts.
  • the bottom of the tapered expansion sleeve is tapered, and the taper is 15°.
  • the bottom of the mandrel body is provided with a cross-shaped groove matched with the cross-shaped piston, the bottom of the mandrel body is provided with a number of threaded holes, and the The mandrel body is connected with the connecting block by bolts.
  • the hydraulic medium is hydraulic oil
  • the hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts of the present invention has the following advantages: when the hole and shaft parts are installed, the hydraulic automatic expansion clamp can automatically expand and clamp its inner wall/outer wall at the same time, and the hydraulic expansion The head can produce different distances in the radial direction according to the specific shape of the inner hole of the hole-type parts, so as to realize the stable installation and clamping of the parts with irregular holes and shafts.
  • Fig. 1 is the hydraulic automatic expansion clamp structure sectional view of the present invention
  • Fig. 2 is the schematic diagram of the cross-shaped piston in Fig. 1;
  • Fig. 3 is a schematic diagram of the cross-shaped piston in Fig. 1, which is another perspective;
  • Fig. 4 is a schematic view of the tapered expansion sleeve in Fig. 1;
  • Fig. 5 is the connection block schematic diagram in Fig. 1;
  • FIG. 6 is a schematic diagram of the connection block in FIG. 1 , from another perspective.
  • the hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts includes a base 1 , and a detachable connecting block 9 is provided on the base 1 .
  • the connecting block 9 is provided with a cone A type expansion sleeve 2 and a cross type piston 3, the conical type expansion sleeve 2 is in contact with the bottom of the cross type piston 3, the conical type expansion sleeve 2 is sleeved with a mandrel body 7, the mandrel body 7 A return spring 4 is arranged between the cross-shaped piston 3 and the top piston of the cross-shaped piston 3 is arranged in the central oil groove 8 of the mandrel body 7, and a hydraulic medium M and a leak-proof gasket are installed in the central oil groove 8 6.
  • hydraulic expansion heads 5 are arranged on the inner wall of the mandrel body 7, and the hydraulic expansion heads 5 are distributed along the radial and axial directions of the mandrel body 7, wherein, under the action of the hydraulic medium M, the The hydraulic expansion head 5 can move in the radial direction and produce different displacements.
  • the base 1 and the connecting block 9 are provided with a plurality of threaded holes 10, and the threaded holes 10 are connected by bolts.
  • the installation method of the hydraulic automatic expansion clamp is described below.
  • put the return spring 4 into the bottom of the mandrel body 7 and then put the cross-shaped piston 3 into the cross-shaped groove of the mandrel body 7 .
  • connect the connecting block 9 and the mandrel body 7 with bolts and finally screw the protruding threaded part of the connecting block 9 into the threaded hole of the base 1, and control the distance to avoid excessive deformation of the conical expansion sleeve 2. Removal is the opposite of the above installation.
  • the hole parts are placed on the fixture by a manipulator.
  • the bottom of the hole parts touches the conical expansion sleeve 2, and the conical expansion sleeve 2 is deformed, and the bottom of the hole parts is deformed.
  • the cross-type piston 3 is pushed axially, and the cross-type piston 3 makes the hydraulic medium flow, and the hydraulic expansion head 5 on the side wall of the mandrel body 7 is fed radially under the action of the hydraulic medium.
  • the specific shape of the hole, the hydraulic expansion head 5 feeds different distances in the radial direction, and the purpose of clamping is achieved while the parts are fed in the axial direction, so as to realize the automatic installation and clamping of the parts.
  • the hydraulic automatic expansion clamp can automatically expand and clamp the inner and outer walls of the hole and shaft parts at the same time. To achieve stable installation and clamping of parts with irregular holes and shafts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

A hydraulic automatic expansion clamp suitable for the clamping of a special-shaped hole and a special-shaped shaft, the clamp comprising a base (1), wherein a detachable connecting block (9) is arranged on the base; a conical expansion sleeve (2) and a cross-shaped piston (3) are arranged on the connecting block; the conical expansion sleeve comes into contact with the bottom of the cross-shaped piston; a mandrel body (7) is sleeved over the conical expansion sleeve; a reset spring (4) is arranged between the mandrel body and the cross-shaped piston; several hydraulic expansion heads (5) are arranged on an inner wall of the mandrel body and are distributed in a radial direction and an axial direction of the mandrel body; and under the action of a hydraulic medium, the hydraulic expansion heads can move in the radial direction and generate different displacement. When the hydraulic automatic expansion clamp is used for mounting a hole-shaft part, the inner wall/outer wall of the hole-shaft part can be automatically expanded and clamped simultaneously, and the hydraulic expansion heads can generate different distances in a radial direction according to the specific shape of an inner hole of the hole-shaft part, so as to achieve stable mounting and clamping of the irregular hole-shaft part.

Description

一种适用于异型孔和异形轴装夹的液压自动膨胀夹具A hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts 技术领域technical field
本发明涉及一种机械紧固装置，更确切地说，是一种适用于异型孔和异形轴装夹的液压自动膨胀夹具。The invention relates to a mechanical fastening device, more specifically, a hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts.
背景技术Background technique
在模具机械制造过程中，夹具是用来固定加工对象，使加工对象处于准确的位置，以接受加工或检测。夹具设计的好坏也就直接影响到了加工对象的加工效率和加工精度，特别是对于加工精度要求较高的加工对象对夹具的设计提出了更高的要求，现有技术在加工圆管薄壁零件时，通常利用三爪卡盘夹薄壁零件的外圆车削内孔或增加工艺肋加工零件外圆，不过由于有些孔类零件(尤其壁厚5mm以下的薄壁孔类零件)本身刚性差，其加工过程极易变形，具体说来，以现有技术作为加工手段有如下缺陷：1、零件本身的变形会影响零件的尺寸精度和形状精度，增加工艺肋会大大增加切削内孔的难度；2、因零件壁较薄切削热会引起零件热变形，使零件尺寸难以控制；3、在切削力尤其为背向力的作用下，极易产生振动、噪音和变形，直接影响零件的尺寸精度、形位公差以及表面粗糙度。In the process of mold machinery manufacturing, the fixture is used to fix the processing object, so that the processing object is in an accurate position for processing or testing. The quality of the fixture design also directly affects the processing efficiency and processing accuracy of the processing object, especially for the processing object with high processing precision requirements, which puts forward higher requirements for the design of the fixture. When making parts, the three-jaw chuck is usually used to clamp the outer circle of thin-walled parts to turn the inner hole or increase the process rib to process the outer circle of the part. However, due to the poor rigidity of some hole parts (especially thin-walled hole parts with a wall thickness of less than 5mm) , the processing process is very easy to deform. Specifically, the existing technology as a processing method has the following defects: 1. The deformation of the part itself will affect the dimensional accuracy and shape accuracy of the part, and adding process ribs will greatly increase the difficulty of cutting the inner hole. 2. Due to the thin wall of the part, the cutting heat will cause thermal deformation of the part, making it difficult to control the size of the part; 3. Under the action of the cutting force, especially the back force, it is easy to generate vibration, noise and deformation, which directly affects the size of the part. Accuracy, Geometric Tolerance and Surface Roughness.
目前市面上虽然有一些液压膨胀夹具用于对孔类零件进行装夹，但是多数为端部或中间部分膨胀卡紧，导致零件受力不平衡，容易出现零件变形等现象，还有操作不便等问题。At present, although there are some hydraulic expansion clamps on the market for clamping hole parts, most of them are expansion clamping at the end or the middle part, which leads to unbalanced force on the parts, prone to parts deformation, etc., as well as inconvenient operation, etc. question.
中国发明CN205290660U涉及一种轴套类结构零件抛光用膨胀夹具，该发明主要是利用带有锥度的六角螺钉和带有可膨胀薄壁部分夹具一座配合使用，达到对孔类零件内壁膨胀夹紧的目的，该发明操作定位方便，操作简单，方便零件的拆卸，提升了工作效率。但是该使用新型对孔类零件的定位依赖于夹具一座，夹具一座的长度限制了该使用新型对孔类零件的夹紧，并且不便于对内孔不规则的孔类零件进行定位与夹紧，例如阶梯孔类零件。Chinese invention CN205290660U relates to an expansion fixture for polishing shaft sleeve structural parts. The invention mainly uses a hexagonal screw with a taper and a fixture with an expandable thin-walled part to cooperate to achieve the expansion and clamping of the inner wall of the hole type parts. The purpose of the invention is that the operation and positioning of the invention are convenient, the operation is simple, the disassembly of the parts is convenient, and the work efficiency is improved. However, the positioning of the new hole-type parts depends on a fixture, and the length of the fixture seat limits the clamping of the hole-type parts using the new type, and it is not convenient to locate and clamp the hole-type parts with irregular inner holes. Such as stepped hole parts.
中国发明CN210164767U公开一种液压膨胀螺钉，该发明主要是利用位于金属套筒的多个膨胀孔中的膨胀头在容置腔内壁凭借容置腔内装有液压类介质径向移动，从而对孔类零件的内壁进行夹紧，该发明类似于液压型膨胀夹具。由于受力变形位置位于螺钉液压膨胀管圆周上均匀分布，压力均匀，螺钉拧紧时螺钉中心不易偏离，而且膨胀之后该膨胀螺钉较常规膨胀螺钉更加牢固不易松动或脱落。但是该发明是使用旋转液压螺杆使得液压螺杆向容置腔内移动以调整容置腔内的液压力从而使得膨胀螺钉凸出膨胀孔，该过程并非自动化，会对装夹效率造成一定的影响，从而会影响生产效率，该发明主要是对零件的中间部分进行卡紧，会导致零件受力不平衡，影响加工精度。Chinese invention CN210164767U discloses a hydraulic expansion screw. The invention mainly utilizes expansion heads located in a plurality of expansion holes of a metal sleeve to move radially on the inner wall of the accommodating cavity by virtue of the hydraulic medium being installed in the accommodating cavity, so as to adjust the holes in the cavity. The inner wall of the part is clamped, the invention is similar to the hydraulic expansion clamp. Because the stress deformation position is evenly distributed on the circumference of the screw hydraulic expansion tube, the pressure is uniform, the screw center is not easy to deviate when the screw is tightened, and the expansion screw is firmer than the conventional expansion screw after expansion and is not easy to loosen or fall off. However, this invention uses a rotating hydraulic screw to move the hydraulic screw into the accommodating cavity to adjust the hydraulic pressure in the accommodating cavity so that the expansion screw protrudes from the expansion hole. This process is not automated and will have a certain impact on the clamping efficiency. As a result, the production efficiency will be affected. The invention mainly clamps the middle part of the part, which will cause the force to be unbalanced on the part and affect the machining accuracy.
中国发明CN209664484U提供一种膨胀夹具，主要利用楔形移动块和锥型面之间的相对移动对孔类零件进行内壁膨胀夹紧，该发明能够自动调整夹具的尺寸，适用于内孔尺寸不同的零件，无需手动调整夹具尺寸，增强夹具对不同尺寸的零件的适应性强。该发明结构过于复杂，实现自动化的方式是借助机床而不是夹具或零件本身，而且该发明是对孔类零件的一端进行卡紧，会对零件的加工精度产生很大的影响。Chinese invention CN209664484U provides an expansion clamp, which mainly utilizes the relative movement between the wedge-shaped moving block and the conical surface to expand and clamp the inner wall of the hole-like parts. The invention can automatically adjust the size of the clamp and is suitable for parts with different inner hole sizes. , there is no need to manually adjust the size of the fixture, and the adaptability of the fixture to parts of different sizes is enhanced. The structure of the invention is too complicated, and the automation is realized by means of a machine tool instead of a fixture or the part itself, and the invention is to clamp one end of a hole-type part, which will have a great impact on the machining accuracy of the part.
发明内容SUMMARY OF THE INVENTION
本发明主要是解决现有技术所存在的技术问题，从而提供一种适用于异型孔和异形轴装夹的液压自动膨胀夹具。The invention mainly solves the technical problems existing in the prior art, thereby providing a hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts.
本发明的上述技术问题主要是通过下述技术方案得以解决的：The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions:
一种适用于异型孔和异形轴装夹的液压自动膨胀夹具，其特征在于，所述的适用于异型孔和异形轴装夹的液压自动膨胀夹具包含一底座，所述的底座上设有一可拆卸的连接块，所述的连接块上设有一锥型膨胀套管和一十字型活塞，所述的锥型膨胀套管与十字型活塞的底部相接触，所述的锥型膨胀套管上套接有一芯轴本体，所述的芯轴本体与所述的十字型活塞之间设有一复位弹簧，所述的十字型活塞的顶部活塞设置在所述的芯轴本体的中心油槽内，所述的中心油槽内装有一液压介质和一防漏垫片，所述的芯轴本体的内壁上设有若干液压 膨胀头，所述的液压膨胀头沿着所述的芯轴本体的径向和轴向分布，其中，在所述的液压介质的作用下，所述的液压膨胀头可沿径向移动，并产生不同的位移。A hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts, characterized in that the hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts includes a base, and the base is provided with a The disassembled connecting block, the connecting block is provided with a conical expansion sleeve and a cross-type piston, the conical expansion sleeve is in contact with the bottom of the cross-type piston, and the conical expansion sleeve is in contact with the bottom of the cross-type piston. A mandrel body is sleeved, a return spring is arranged between the mandrel body and the cross-shaped piston, and the top piston of the cross-shaped piston is arranged in the central oil groove of the mandrel body, so the The central oil tank is equipped with a hydraulic medium and a leak-proof gasket, and the inner wall of the mandrel body is provided with a number of hydraulic expansion heads, and the hydraulic expansion heads are along the radial direction and axis of the mandrel body. distributed in the radial direction, wherein, under the action of the hydraulic medium, the hydraulic expansion head can move in the radial direction and generate different displacements.
作为本发明较佳的实施例，所述的底座和连接块上均设有若干螺纹孔，所述的螺纹孔利用螺栓进行连接。As a preferred embodiment of the present invention, the base and the connecting block are provided with a plurality of threaded holes, and the threaded holes are connected by bolts.
作为本发明较佳的实施例，所述的锥型膨胀套管的底部呈锥形，且锥度为15°。As a preferred embodiment of the present invention, the bottom of the tapered expansion sleeve is tapered, and the taper is 15°.
作为本发明较佳的实施例，所述的芯轴本体的底部设有与所述的十字型活塞相配合的十字形槽，所述的芯轴本体的底部设有若干螺纹孔，且所述的芯轴本体与所述的连接块通过螺栓连接。As a preferred embodiment of the present invention, the bottom of the mandrel body is provided with a cross-shaped groove matched with the cross-shaped piston, the bottom of the mandrel body is provided with a number of threaded holes, and the The mandrel body is connected with the connecting block by bolts.
作为本发明较佳的实施例，所述的液压介质为液压油，As a preferred embodiment of the present invention, the hydraulic medium is hydraulic oil,
本发明的适用于异型孔和异形轴装夹的液压自动膨胀夹具具有以下优点：该液压自动膨胀夹具在孔轴类零件安装时，可以同时对其内壁/外壁进行自动膨胀夹紧，并且液压膨胀头可根据孔类零件内孔的具体形状为在径向上产生不同的距离，以实现对不规则孔轴零件的稳定安装与夹紧。The hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts of the present invention has the following advantages: when the hole and shaft parts are installed, the hydraulic automatic expansion clamp can automatically expand and clamp its inner wall/outer wall at the same time, and the hydraulic expansion The head can produce different distances in the radial direction according to the specific shape of the inner hole of the hole-type parts, so as to realize the stable installation and clamping of the parts with irregular holes and shafts.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.
图1为本发明的液压自动膨胀夹具结构剖视图；Fig. 1 is the hydraulic automatic expansion clamp structure sectional view of the present invention;
图2为图1中的十字型活塞示意图；Fig. 2 is the schematic diagram of the cross-shaped piston in Fig. 1;
图3为图1中的十字型活塞示意图，为另一个视角；Fig. 3 is a schematic diagram of the cross-shaped piston in Fig. 1, which is another perspective;
图4为图1中的锥型膨胀套管示意图；Fig. 4 is a schematic view of the tapered expansion sleeve in Fig. 1;
图5为图1中的连接块示意图；Fig. 5 is the connection block schematic diagram in Fig. 1;
图6为图1中的连接块示意图，为另一个视角。FIG. 6 is a schematic diagram of the connection block in FIG. 1 , from another perspective.
具体实施方式Detailed ways
下面结合附图对本发明的优选实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.
如图1至图6所示，该适用于异型孔和异形轴装夹的液压自动膨胀夹具包含一底座1，该底座1上设有一可拆卸的连接块9，该连接块9上设有一锥型膨胀套管2和一十字型活塞3，该锥型膨胀套管2与十字型活塞3的底部相接触，该锥型膨胀套管2上套接有一芯轴本体7，该芯轴本体7与该十字型活塞3之间设有一复位弹簧4，该十字型活塞3的顶部活塞设置在该芯轴本体7的中心油槽8内，该中心油槽8内装有一液压介质M和一防漏垫片6，该芯轴本体7的内壁上设有若干液压膨胀头5，该液压膨胀头5沿着该芯轴本体7的径向和轴向分布，其中，在该液压介质M的作用下，该液压膨胀头5可沿径向移动，并产生不同的位移。As shown in FIGS. 1 to 6 , the hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts includes a base 1 , and a detachable connecting block 9 is provided on the base 1 . The connecting block 9 is provided with a cone A type expansion sleeve 2 and a cross type piston 3, the conical type expansion sleeve 2 is in contact with the bottom of the cross type piston 3, the conical type expansion sleeve 2 is sleeved with a mandrel body 7, the mandrel body 7 A return spring 4 is arranged between the cross-shaped piston 3 and the top piston of the cross-shaped piston 3 is arranged in the central oil groove 8 of the mandrel body 7, and a hydraulic medium M and a leak-proof gasket are installed in the central oil groove 8 6. Several hydraulic expansion heads 5 are arranged on the inner wall of the mandrel body 7, and the hydraulic expansion heads 5 are distributed along the radial and axial directions of the mandrel body 7, wherein, under the action of the hydraulic medium M, the The hydraulic expansion head 5 can move in the radial direction and produce different displacements.
该底座1和连接块9上均设有若干螺纹孔10，该螺纹孔10利用螺栓进行连接。The base 1 and the connecting block 9 are provided with a plurality of threaded holes 10, and the threaded holes 10 are connected by bolts.
下面介绍该液压自动膨胀夹具的安装方式。安装时，将复位弹簧4放入芯轴本体7的底部，再将十字型活塞3放入芯轴本体7的十字型的槽内。之后，用螺栓将连接块9和芯轴本体7联接起来，最后将连接块9的凸出的螺纹部分拧入底座1的螺纹孔中，控制好距离，以免锥形膨胀套管2过度变形。拆除时，与以上安装时的动作相反。The installation method of the hydraulic automatic expansion clamp is described below. When installing, put the return spring 4 into the bottom of the mandrel body 7 , and then put the cross-shaped piston 3 into the cross-shaped groove of the mandrel body 7 . After that, connect the connecting block 9 and the mandrel body 7 with bolts, and finally screw the protruding threaded part of the connecting block 9 into the threaded hole of the base 1, and control the distance to avoid excessive deformation of the conical expansion sleeve 2. Removal is the opposite of the above installation.
下面介绍该液压自动膨胀夹具的工作方式。The working mode of the hydraulic automatic expansion clamp is described below.
首先，采用机械手将孔类零件放置到夹具上，当零件沿芯轴轴向进给时，孔类零件的底部触碰到锥型膨胀套管2，锥型膨胀套管2发生变形，在底座1的配合下，轴向推动十字型活塞3，十字型活塞3使得液压类介质流动，芯轴本体7的侧壁上的液压膨胀头5在液压介质的作用下沿径向进给，根据内孔的具体形 状，液压膨胀头5沿径向进给不同的距离，在零件沿轴向进给的同时实现夹紧的目的，从而实现对零件的自动化安装与夹紧。First, the hole parts are placed on the fixture by a manipulator. When the parts are axially fed along the mandrel, the bottom of the hole parts touches the conical expansion sleeve 2, and the conical expansion sleeve 2 is deformed, and the bottom of the hole parts is deformed. Under the cooperation of 1, the cross-type piston 3 is pushed axially, and the cross-type piston 3 makes the hydraulic medium flow, and the hydraulic expansion head 5 on the side wall of the mandrel body 7 is fed radially under the action of the hydraulic medium. The specific shape of the hole, the hydraulic expansion head 5 feeds different distances in the radial direction, and the purpose of clamping is achieved while the parts are fed in the axial direction, so as to realize the automatic installation and clamping of the parts.
该液压自动膨胀夹具在孔轴类零件安装时，可以同时对其内壁/外壁进行自动膨胀夹紧，并且液压膨胀头可根据孔类零件内孔的具体形状为在径向上产生不同的距离，以实现对不规则孔轴零件的稳定安装与夹紧。The hydraulic automatic expansion clamp can automatically expand and clamp the inner and outer walls of the hole and shaft parts at the same time. To achieve stable installation and clamping of parts with irregular holes and shafts.
不局限于此，任何不经过创造性劳动想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书所限定的保护范围为准。Not limited to this, any changes or substitutions that are not thought of through creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims (5)

  1. 一种适用于异型孔和异形轴装夹的液压自动膨胀夹具，其特征在于，所述的适用于异型孔和异形轴装夹的液压自动膨胀夹具包含一底座(1)，所述的底座(1)上设有一可拆卸的连接块(9)，所述的连接块(9)上设有一锥型膨胀套管(2)和一十字型活塞(3)，所述的锥型膨胀套管(2)与十字型活塞(3)的底部相接触，所述的锥型膨胀套管(2)上套接有一芯轴本体(7)，所述的芯轴本体(7)与所述的十字型活塞(3)之间设有一复位弹簧(4)，所述的十字型活塞(3)的顶部活塞设置在所述的芯轴本体(7)的中心油槽(8)内，所述的中心油槽(8)内装有一液压介质(M)和一防漏垫片(6)，所述的芯轴本体(7)的内壁上设有若干液压膨胀头(5)，所述的液压膨胀头(5)沿着所述的芯轴本体(7)的径向和轴向分布，其中，在所述的液压介质(M)的作用下，所述的液压膨胀头(5)可沿径向移动，并产生不同的位移。A hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts, characterized in that the hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts comprises a base (1), and the base ( 1) A detachable connecting block (9) is provided on the connecting block (9), and a conical expansion sleeve (2) and a cross-shaped piston (3) are provided on the connecting block (9). (2) In contact with the bottom of the cross-shaped piston (3), a mandrel body (7) is sleeved on the conical expansion sleeve (2), and the mandrel body (7) is connected to the A return spring (4) is arranged between the cross-shaped pistons (3), and the top piston of the cross-shaped piston (3) is arranged in the central oil groove (8) of the mandrel body (7). A hydraulic medium (M) and a leak-proof gasket (6) are installed in the central oil tank (8), and several hydraulic expansion heads (5) are arranged on the inner wall of the mandrel body (7). (5) Distributed along the radial and axial directions of the mandrel body (7), wherein, under the action of the hydraulic medium (M), the hydraulic expansion head (5) can be radially distributed move and produce different displacements.
  2. 根据权利要求1所述的适用于异型孔和异形轴装夹的液压自动膨胀夹具，其特征在于，所述的底座(1)和连接块(9)上均设有若干螺纹孔(10)，所述的螺纹孔(10)利用螺栓进行连接。The hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts according to claim 1, wherein the base (1) and the connecting block (9) are provided with a plurality of threaded holes (10), The threaded holes (10) are connected by bolts.
  3. 根据权利要求1所述的适用于异型孔和异形轴装夹的液压自动膨胀夹具，其特征在于，所述的锥型膨胀套管(2)的底部呈锥形，且锥度为15°。The hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts according to claim 1, characterized in that the bottom of the tapered expansion sleeve (2) is tapered, and the taper is 15°.
  4. 根据权利要求1所述的适用于异型孔和异形轴装夹的液压自动膨胀夹具，其特征在于，所述的芯轴本体(7)的底部设有与所述的十字型活塞(3)相配合的十字形槽，所述的芯轴本体(7)的底部设有若干螺纹孔，且所述的芯轴本体(7)与所述的连接块(9)通过螺栓连接。The hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts according to claim 1, characterized in that the bottom of the mandrel body (7) is provided with the cross-shaped piston (3) at the bottom. In the matching cross-shaped groove, the bottom of the mandrel body (7) is provided with several threaded holes, and the mandrel body (7) and the connecting block (9) are connected by bolts.
  5. 根据权利要求1所述的适用于异型孔和异形轴装夹的液压自动膨胀夹具，其特征在于，所述的液压介质(M)为液压油。The hydraulic automatic expansion clamp suitable for clamping special-shaped holes and special-shaped shafts according to claim 1, wherein the hydraulic medium (M) is hydraulic oil.
PCT/CN2021/102594 2020-12-31 2021-06-28 Hydraulic automatic expansion clamp suitable for clamping of special-shaped hole and special-shaped shaft WO2022142202A1 (en)

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CN116045892A (en) * 2023-03-31 2023-05-02 云南滇坡机械设备有限公司 Device for detecting flatness of smooth surface of inner wall of die
CN117817397A (en) * 2024-02-26 2024-04-05 东莞市力博特智能装备有限公司 Fastening clamp with positioning device and assembly thereof

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CN109396907A (en) * 2018-11-05 2019-03-01 刘剑 Hydraulic expansion device
CN110385462A (en) * 2019-08-26 2019-10-29 强胜精密机械(苏州)有限公司 A kind of outer circle part abnormity positioning drilling tool fixture and clamping method
CN112719962A (en) * 2020-12-31 2021-04-30 江苏罡阳股份有限公司 Hydraulic automatic expansion clamp suitable for clamping special-shaped hole and special-shaped shaft

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US4909493A (en) * 1987-12-25 1990-03-20 Kabushiki Kaisha Kosmek Cylinder type hydraulic clamp
CN203956600U (en) * 2014-05-26 2014-11-26 湖北福欣机床制造有限公司 A kind of for pressing from both sides the pneumatic type lathe automatic material returning fixture of workpiece
CN205363301U (en) * 2016-01-25 2016-07-06 兴平市东龙工具制造有限公司 Static pressure inflation formula anchor clamps
CN207431308U (en) * 2017-11-10 2018-06-01 烟台艾迪精密机械股份有限公司 A kind of hydraulic buckling clamp structure
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CN112719962A (en) * 2020-12-31 2021-04-30 江苏罡阳股份有限公司 Hydraulic automatic expansion clamp suitable for clamping special-shaped hole and special-shaped shaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116045892A (en) * 2023-03-31 2023-05-02 云南滇坡机械设备有限公司 Device for detecting flatness of smooth surface of inner wall of die
CN116045892B (en) * 2023-03-31 2023-09-29 云南滇坡机械设备有限公司 Device for detecting flatness of smooth surface of inner wall of die
CN117817397A (en) * 2024-02-26 2024-04-05 东莞市力博特智能装备有限公司 Fastening clamp with positioning device and assembly thereof

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