WO2021129418A1 - 一种精密自定心内喷油珩磨刀具 - Google Patents

一种精密自定心内喷油珩磨刀具 Download PDF

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Publication number
WO2021129418A1
WO2021129418A1 PCT/CN2020/135731 CN2020135731W WO2021129418A1 WO 2021129418 A1 WO2021129418 A1 WO 2021129418A1 CN 2020135731 W CN2020135731 W CN 2020135731W WO 2021129418 A1 WO2021129418 A1 WO 2021129418A1
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Prior art keywords
connecting body
rod
honing tool
honing
hole
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PCT/CN2020/135731
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English (en)
French (fr)
Inventor
石惠林
朱正权
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苏州信能精密机械有限公司
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Publication of WO2021129418A1 publication Critical patent/WO2021129418A1/zh

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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
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/08—Honing tools
    • 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
    • B24B55/06—Dust extraction equipment on grinding or polishing machines

Definitions

  • the invention relates to a precision self-centering internal oil injection honing tool.
  • Honing refers to the finishing of the finished surface with the whetstone (also called honing stick or sand stick) embedded in the honing rod.
  • the contact area between honing and the surface of the hole is large, mainly for processing various cylindrical holes with a diameter of 5 to 500 mm or even larger, and the ratio of the hole depth to the hole diameter can reach a difference of 10 times or more.
  • the honing strip rubs and cuts the hole surface, which will generate great heat. If the heat cannot cool the honing tool and the hole surface in time, it will aggravate the tool wear, which will seriously cause the high temperature of the hole surface to change the metallographic structure.
  • the cooling oil is mostly sprayed externally, that is, the cooling oil is sprayed from the outside to the position of the orifice.
  • the cooling oil cannot quickly penetrate to the contact position between the sand bar and the hole surface, the cooling effect is not good, and the processing quality problems often occur, and with the rotation of the honing tool, the sprayed cooling oil is not easy to be controlled, and the cooling oil The liquid will splash, which will easily cause the environment to be dirty and messy, and subsequent cleaning is time-consuming and time-consuming; in addition, after the honing tool is installed on the machine tool spindle in the prior art, the outer peripheral surface of the connecting end of the honing tool usually cannot be connected to the machine tool spindle.
  • the inner circumference guarantees a zero-to-zero gap.
  • the honing tool After the tool is tightened, the honing tool will be slightly skewed relative to the spindle of the machine tool, which results in low coaxiality of the front and rear ends of the honing tool, and the range of tool skipping is often too large during processing. , It is necessary to continuously test and hone the tool and adjust the clamping posture to avoid the quality problem of excessive hole machining or uneven and smooth hole surface, and the adjustment and correction of the tool is time-consuming and time-consuming.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a precision self-centering internal oil injection honing tool.
  • the honing tool includes a main rod, a push rod arranged on the inner circumference of the main rod and sliding along the length of the main rod, and a grinding assembly that contacts the inner surface of the hole to be processed for honing, and
  • the main rod includes a rod body and a connecting body fixedly connected to the end of the rod body for butting with the main shaft.
  • the outer peripheral surface of the connecting body gradually extends and shrinks from the side close to the rod body to the side away from the rod body.
  • the honing tool It also includes a mounting structure for fastening the connecting body on the machine tool spindle; the mounting structure includes a mounting member that is arranged in cooperation with the connecting body and fixes the connecting body on the machine tool spindle; the mounting structure also includes a body close to the rod formed on the connecting body.
  • the inner circumference of the mounting part Internal threads are provided, at least a part of the inner circumference of the mounting part is threadedly connected with the clamping table, and at least a part of the inner circumference of the mounting part is threadedly connected with the spindle of the machine tool;
  • the clamping table is provided with bayonet openings on the corresponding two sides in the circumferential direction;
  • the honing tool also includes a diversion hole penetrating between the rod body and the connecting body along the length of the main rod.
  • the connecting body is provided with an inflow hole communicating with the diversion hole, and the rod body is provided with a diversion hole communicating with the diversion hole.
  • the outflow hole is opened on the side of the grinding assembly close to the connecting body, and the distance between the outflow hole and the end of the grinding assembly near the connecting body is 0.5mm ⁇ 1mm; there are two diversion holes , And the two guide holes are respectively located on the corresponding two sides; the inlet of the inflow hole is located on the outer circumferential surface of the connecting body; the outer circumferential surface of the connecting body is provided with a first sealing ring groove and a second sealing ring groove, the first sealing ring The groove and the second seal ring groove are respectively located on both sides of the inflow hole in the extension direction of the main rod.
  • the honing tool includes a main rod, a push rod arranged on the inner circumference of the main rod and sliding along the length of the main rod, and a grinding assembly that contacts the inner surface of the hole to be processed for honing, and
  • the main rod includes a rod body and a connecting body fixedly connected to the end of the rod body for butting with the main shaft.
  • the outer peripheral surface of the connecting body gradually extends and shrinks from the side close to the rod body to the side away from the rod body.
  • the honing tool It also includes a mounting structure that will fasten the connecting body to the spindle of the machine tool.
  • the mounting structure includes a mounting member that is arranged in cooperation with the connecting body and fixes the connecting body on the main shaft of the machine tool.
  • the mounting structure further includes a chucking table formed on the outer periphery of the connecting body on the side close to the rod body.
  • the connecting body is installed on the machine tool spindle, the mounting member is connected between the chucking table and the machine tool spindle.
  • the mounting member is a ring-shaped component
  • the outer peripheral surface of the clamping table is provided with external threads
  • the inner periphery of the mounting member is provided with internal threads
  • at least a part of the inner periphery of the mounting member is threaded with the clamping table
  • the inner periphery of the mounting member is at least It also has a part threaded connection with the spindle of the machine tool.
  • the clamping platform is provided with bayonet openings located on two corresponding sides in the circumferential direction.
  • the honing tool further includes a diversion hole penetrating between the rod body and the connecting body along the length of the main rod.
  • the connecting body is provided with an inflow hole communicating with the diversion hole, and the rod body is provided with a diversion hole. Outflow hole connected to the hole.
  • the outflow hole is opened on a side of the grinding assembly close to the connecting body, and the distance between the outflow hole and the end of the grinding assembly near the connecting body is 0.5 mm to 1 mm.
  • two diversion holes are provided, and the two diversion holes are respectively located on two sides of the corresponding one.
  • the inlet of the inflow hole is located on the outer peripheral surface of the connecting body.
  • a first sealing ring groove and a second sealing ring groove are formed on the outer peripheral surface of the connecting body, and the first sealing ring groove and the second sealing ring groove are respectively located on both sides of the inflow hole in the extension direction of the main rod.
  • the present invention has the following advantages compared with the prior art:
  • the precision self-centering internal oil-injected honing tool of the present invention adopts a taper self-centering connection design, which ensures the front and rear coaxiality accuracy and assembly accuracy of the main rod, and the radial runout reaches less than 0.005mm, which greatly shortens the assembly adjustment time ;
  • Adopting the internal oil injection structure design the honing oil is directed to the outflow hole of the honing assembly through the inflow hole on the cone surface, and poured onto the inner hole wall of the honing, which can instantly reduce the grinding temperature and wash away the grinding debris. It avoids the damage of high temperature to the tool and the processed parts, also reduces the surface roughness of the honing hole, and improves the quality of the honing.
  • Figure 1 is a schematic diagram of the overall lateral cross-sectional structure of the honing tool of the present invention:
  • Figure 2 is a schematic side sectional view of the structure of the mounting part of the present invention:
  • Figure 3 is a schematic side sectional view of the main pole of the present invention:
  • Figure 4 is a schematic diagram of the top view structure of the main pole of the present invention:
  • 101 rod body; 102, connecting body; 10, diversion hole; 11, inflow hole; 12, outflow hole; 13, first sealing ring groove; 14, second sealing ring groove; 15, clamping table; 150 , Bayonet; 2. Push rod; 3. Grinding components; 4. Mounting parts.
  • the honing tool includes a main rod, a push rod 2 that slides along the length of the main rod and is arranged on the inner circumference of the main rod 2, and the to-be-processed
  • the inner surface of the hole is in contact with the grinding assembly 3 for honing.
  • the main rod includes a rod body 101, a connecting body 102 fixedly connected to the end of the rod body 101 for docking with the main shaft, the rod body 101 and the connecting body 102 are integrally formed, and the connecting body 102
  • the outer peripheral surface of the honing tool gradually extends and shrinks from the side close to the rod body 101 to the side away from the rod body 101.
  • the honing tool also includes a mounting structure for fastening the connecting body 102 on the machine tool spindle.
  • the grinding assembly 3 is the same as the prior art, and generally includes a plurality of tool holders evenly distributed in the circumferential direction and slidable along the radial direction of the main rod, and a plurality of sand bars respectively provided on the outer surface of each of the tool holders.
  • the mounting structure includes a mounting member 4 that is arranged in cooperation with the connecting body 102 and fixes the connecting body 102 on the spindle of the machine tool.
  • the mounting structure also includes a chucking table 15 formed on the outer circumference of the connecting body 102 on the side close to the rod body 101.
  • the mounting member 4 is a ring-shaped component (an annular baffle is provided at one end of the ring-shaped mounting member 4), the outer peripheral surface of the clamping base 15 is provided with external threads, and the inner periphery of the mounting member 4 is provided with internal threads. At least a part of the inner circumference of the member 4 is threadedly connected with the clamping table 15, and at least a part of the inner circumference of the mounting member 4 is threadedly connected with the spindle of the machine tool.
  • the bayonet 15 is provided with bayonet openings 150 located on corresponding two sides in the circumferential direction. The bayonet 150 is clamped with the clamping block of the machine tool spindle.
  • the spindle of the machine tool also needs to be equipped with a shape and structure that matches the connecting body 102.
  • the bayonet 150 on the chuck 15 needs to correspond to the boss on the spindle Clamping, and then put the mounting piece 4 on the front end of the main rod, screw the mounting piece 4 to the clamping table 15, and screw it all the way, so that the inner circumference of the mounting piece 4 can also be connected with the external thread on the main shaft.
  • the honing tool is stably installed on the machine tool spindle. After installation, the front and rear coaxiality accuracy and assembly accuracy of the main pole, the radial runout is less than 0.005, and it can be used in one installation without assembly and debugging.
  • the honing tool further includes a diversion hole 10 penetrating between the rod body 101 and the connecting body 102 along the length of the main rod.
  • the connecting body 102 is provided with an inflow hole 11 communicating with the diversion hole 10, and the rod body
  • An outflow hole 12 communicating with the diversion hole 10 is opened on the 101.
  • the inlet of the inflow hole 11 is located on the outer peripheral surface of the connecting body 102; the outflow hole 12 is opened on the side of the grinding assembly 3 close to the connecting body 102, and the outflow hole 12 is to the end of the grinding assembly 3 close to the connecting body 102.
  • the distance between them is 0.5 mm.
  • two diversion holes 10 are provided, and the two diversion holes 10 are respectively located on two sides of the corresponding one.
  • first seal ring groove 13 and a second seal ring groove 14 are respectively located in the inflow hole in the extension direction of the main rod.
  • first sealing ring groove 13 and the second sealing ring groove 14 are provided with sealing rings, which can prevent the cooling oil from overflowing from the inlet of the inflow hole 11 to the outside.
  • a limit slot is provided on the push rod 2
  • a limit bolt is threaded on the connecting body 102, and the free end of the limit bolt penetrates into the limit slot along the radial direction of the connecting body 102.
  • the precision self-centering internal oil injection honing tool of the present invention adopts a taper self-centering connection design to ensure the front and rear coaxiality accuracy and assembly accuracy of the main rod, and the radial runout is less than 0.005mm, which greatly The assembly adjustment time is shortened; the internal fuel injection structure design is adopted, and the honing oil is directed to the outflow hole 12 of the honing assembly through the inflow hole 11 on the cone surface and sprayed out, and poured onto the inner hole wall of the honing, which can instantly reduce the grinding temperature And the effect of washing away the grinding debris, avoiding the damage of high temperature to the tool and the processed parts, also reducing the surface roughness of the honing hole, and improving the quality of honing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

一种精密自定心内喷油珩磨刀具，珩磨刀具包括主杆、沿主杆的长度方向滑动的设于主杆内周的推杆（2）、与待加工的孔内表面接触珩磨的磨削组件（3），主杆包括杆本体（101）、固定连接在杆本体端部用于与主轴对接的连接体（102），连接体的外周面由靠近杆本体的一侧向远离杆本体的一侧呈锥形逐渐延伸缩小，珩磨刀具还包括将使连接体紧固在机床主轴上的安装结构；上述精密自定心内喷油珩磨刀具，采用锥度自定心连接设计，保证了主杆前、后同轴度精度和装配精度，径向跳动达到0.005mm以下，大大缩短了装配调整时间。

Description

一种精密自定心内喷油珩磨刀具 技术领域
本发明涉及一种精密自定心内喷油珩磨刀具。
背景技术
珩磨是指用镶嵌在珩磨杆上的油石(也称珩磨条或者砂条)对精加工表面进行的精整加工。珩磨与孔表面的接触面积较大，主要加工直径5～500毫米甚至更大的各种圆柱孔，孔深与孔径之比可达10倍之差或更大。珩磨加工时，珩磨砂条摩擦切削孔面，会产生极大的热量，热量若不能及时对珩磨刀具和孔面进行冷却则会加剧刀具磨损，严重会导致孔面高温受热导致金相组织改变，从而破坏了零件使用性能，高温下珩磨刀具也会发生断裂等损坏现象，现有技术中大多采用外喷冷却油液的方式进行冷却，即冷却油液从外喷向孔口位置，这种方式冷却油液并不能迅速的浸透到砂条与孔面的接触位置，冷却效果并不好，时常出现加工质量问题，而且伴随着珩磨刀具的旋转，喷出的冷却油液不易受控制，冷却油液会有飞溅的情况，易导致环境的脏乱差，后续清理费工费时；此外，现有技术中珩磨刀具安装到机床主轴上之后，珩磨刀具的连接端部外周面通常无法与机床主轴的内周保证零对零的间隙，在刀具紧固之后，珩磨刀具相对机床的主轴会发生轻微偏斜，这就造成珩磨刀具前后端同轴度精度低的情况，加工时跳刀范围往往过大，需要不断的对刀具进行试珩，调整装夹姿态，以避免造成孔加工过大或孔面不均匀光滑的质量问题，刀具的调整修正费工费时。
发明内容
本发明所要解决的技术问题是克服现有技术的不足，提供一种精密自定心内喷油珩磨刀具。
为解决上述技术问题，本发明采取的技术方案如下：
一种精密自定心内喷油珩磨刀具，珩磨刀具包括主杆、沿主杆的长度方向滑动的设于主杆内周的推杆、与待加工的孔内表面接触珩磨的磨削组件，主杆包括杆本体、固定连接在杆本体端部用于与主轴对接的连接体，连接体的外周面由靠近杆本体的一侧向远离杆本体的一侧呈锥形逐渐延伸缩小，珩磨刀具还包括将使连接体紧固在机床主轴上的安装结构；安装结构包括与连接体配合设置并将连接体固定在机床主轴上的安装件；安装结构还包括形成于连接体的靠近杆本体一侧外周上的卡台，连接体安装在机床主轴上时，安装件连接在卡台与机床主轴之间；安装件为环状部件，卡台的外周面开设有外螺纹，安装件的内周开设有内螺纹， 安装件的内周至少具有一部分与卡台螺纹连接，安装件的内周至少还具有一部分与机床主轴螺纹连接；卡台上开设有在圆周方向位于对应两侧的卡口；珩磨刀具还包括沿主杆的长度方向穿设在杆本体和连接体之间的导流孔，连接体上开设有与导流孔连通的流入孔，杆本体上开设有与导流孔连通的流出孔；流出孔开设于磨削组件靠近连接体的一侧方，且流出孔至磨削组件靠近连接体一侧的端部之间的距离为0.5mm～1mm；导流孔开设有两个，且两个导流孔分别位于对应的两侧；流入孔的入口位于连接体的外周面上；连接体的外周面上开设有第一密封环槽和第二密封环槽，第一密封环槽和第二密封环槽在主杆的延伸方向上分别位于流入孔的两侧方。
一种精密自定心内喷油珩磨刀具，珩磨刀具包括主杆、沿主杆的长度方向滑动的设于主杆内周的推杆、与待加工的孔内表面接触珩磨的磨削组件，主杆包括杆本体、固定连接在杆本体端部用于与主轴对接的连接体，连接体的外周面由靠近杆本体的一侧向远离杆本体的一侧呈锥形逐渐延伸缩小，珩磨刀具还包括将使连接体紧固在机床主轴上的安装结构。
优选地，安装结构包括与连接体配合设置并将连接体固定在机床主轴上的安装件。
优选地，安装结构还包括形成于连接体的靠近杆本体一侧外周上的卡台，连接体安装在机床主轴上时，安装件连接在卡台与机床主轴之间。
优选地，安装件为环状部件，卡台的外周面开设有外螺纹，安装件的内周开设有内螺纹，安装件的内周至少具有一部分与卡台螺纹连接，安装件的内周至少还具有一部分与机床主轴螺纹连接。
优选地，卡台上开设有在圆周方向位于对应两侧的卡口。
优选地，珩磨刀具还包括沿主杆的长度方向穿设在杆本体和连接体之间的导流孔，连接体上开设有与导流孔连通的流入孔，杆本体上开设有与导流孔连通的流出孔。
优选地，流出孔开设于磨削组件靠近连接体的一侧方，且流出孔至磨削组件靠近连接体一侧的端部之间的距离为0.5mm～1mm。
优选地，导流孔开设有两个，且两个导流孔分别位于对应的两侧。
优选地，流入孔的入口位于连接体的外周面上。
优选地，连接体的外周面上开设有第一密封环槽和第二密封环槽，第一密封环槽和第二密封环槽在主杆的延伸方向上分别位于流入孔的两侧方。
由于以上技术方案的实施，本发明与现有技术相比具有如下优点：
本发明的精密自定心内喷油珩磨刀具，采用锥度自定心连接设计，保证了主杆前、后同轴度精度和装配精度，径向跳动达到0.005mm以下，大大缩短了装配调整时间；采用内喷油 结构设计，通过锥面上流入孔将珩磨油引到珩磨组件处的流出孔喷出，浇注到珩磨内孔壁上，起到瞬间降低磨削温度和冲走磨屑的作用，避免了高温对刀具及被加工零件的损坏，也降低了珩磨孔的表面粗糙度，提高了珩磨质量。
附图说明
图1为本发明的珩磨刀具整体侧向剖视结构示意图：
图2为本发明的安装件侧向剖视结构示意图：
图3为本发明的主杆侧向剖视结构示意图：
图4为本发明的主杆俯视结构示意图：
其中：101、杆本体；102、连接体；10、导流孔；11、流入孔；12、流出孔；13、第一密封环槽；14、第二密封环槽；15、卡台；150、卡口；2、推杆；3、磨削组件；4、安装件。
具体实施方式
下面结合附图和具体的实施例对本发明做进一步详细的说明。
如图1至图4所示，一种精密自定心内喷油珩磨刀具，珩磨刀具包括主杆、沿主杆的长度方向滑动的设于主杆内周的推杆2、与待加工的孔内表面接触珩磨的磨削组件3，主杆包括杆本体101、固定连接在杆本体101端部用于与主轴对接的连接体102，杆本体101和连接体102为一体成型，连接体102的外周面由靠近杆本体101的一侧向远离杆本体101的一侧呈锥形逐渐延伸缩小，珩磨刀具还包括将使连接体102紧固在机床主轴上的安装结构。磨削组件3与现有技术相同，一般包括沿圆周方向均匀分布且沿所述主杆径向能够滑动的多个刀座、分别设于各所述刀座外表面的多个砂条。
具体地，安装结构包括与连接体102配合设置并将连接体102固定在机床主轴上的安装件4。安装结构还包括形成于连接体102的靠近杆本体101一侧外周上的卡台15，连接体102安装在机床主轴上时，安装件4连接在卡台15与机床主轴之间。
本例中，安装件4为环状部件(环状安装件4的一端部设置有环形挡板)，卡台15的外周面开设有外螺纹，安装件4的内周开设有内螺纹，安装件4的内周至少具有一部分与卡台15螺纹连接，安装件4的内周至少还具有一部分与机床主轴螺纹连接。另外，卡台15上开设有在圆周方向位于对应两侧的卡口150。卡口150与机床主轴的卡块卡接。
本例中，机床的主轴也需要设置与连接体102配合的形状结构，使用时，先将连接体102插入主轴中，插入的时候卡台15上的卡口150需要与主轴上的凸台对应卡接，然后在将安装件4从主杆的前端套上，将安装件4拧转到卡台15上，并一直拧，使安装件4的内 周也能与主轴上的外螺纹连接，直至安装件4的环形挡板卡台15的一侧相抵触为止，至此珩磨刀具便稳定的安装在机床主轴上。安装之后主杆前、后同轴度精度和装配精度，径向跳动达到0.005以下，一次安装便可使用，无需装配调试。
进一步地，珩磨刀具还包括沿主杆的长度方向穿设在杆本体101和连接体102之间的导流孔10，连接体102上开设有与导流孔10连通的流入孔11，杆本体101上开设有与导流孔10连通的流出孔12。流入孔11的入口位于连接体102的外周面上；流出孔12开设于磨削组件3靠近连接体102的一侧方，且流出孔12至磨削组件3靠近连接体102一侧的端部之间的距离为0.5mm，本例中，导流孔10开设有两个，且两个导流孔10分别位于对应的两侧。
进一步地，连接体102的外周面上开设有第一密封环槽13和第二密封环槽14，第一密封环槽13和第二密封环槽14在主杆的延伸方向上分别位于流入孔11的两侧方，第一密封环槽13和第二密封环槽14内设置密封圈，可以避免冷却油液从流入孔11的入口处溢出至外界。
此外，推杆2上开设有限位槽，连接体102上螺纹连接有限位螺栓，限位螺栓的自由端部沿所述连接体102的径向穿设至所述限位槽内。
综上所述，本发明的精密自定心内喷油珩磨刀具，采用锥度自定心连接设计，保证了主杆前、后同轴度精度和装配精度，径向跳动达到0.005mm以下，大大缩短了装配调整时间；采用内喷油结构设计，通过锥面上流入孔11将珩磨油引到珩磨组件处的流出孔12喷出，浇注到珩磨内孔壁上，起到瞬间降低磨削温度和冲走磨屑的作用，避免了高温对刀具及被加工零件的损坏，也降低了珩磨孔的表面粗糙度，提高了珩磨质量。
以上对本发明做了详尽的描述，其目的在于让熟悉此领域技术的人士能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明的精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (11)

  1. 一种精密自定心内喷油珩磨刀具，所述珩磨刀具包括主杆、沿所述主杆的长度方向滑动的设于所述主杆内周的推杆、与待加工的孔内表面接触珩磨的磨削组件，其特征在于：所述主杆包括杆本体、固定连接在所述杆本体端部用于与主轴对接的连接体，所述连接体的外周面由靠近所述杆本体的一侧向远离所述杆本体的一侧呈锥形逐渐延伸缩小，所述珩磨刀具还包括将使所述连接体紧固在机床主轴上的安装结构；所述安装结构包括与所述连接体配合设置并将所述连接体固定在机床主轴上的安装件；所述安装结构还包括形成于所述连接体的靠近所述杆本体一侧外周上的卡台，所述连接体安装在机床主轴上时，所述安装件连接在所述卡台与机床主轴之间；所述安装件为环状部件，所述卡台的外周面开设有外螺纹，所述安装件的内周开设有内螺纹，所述安装件的内周至少具有一部分与所述卡台螺纹连接，所述安装件的内周至少还具有一部分与机床主轴螺纹连接；所述卡台上开设有在圆周方向位于对应两侧的卡口；所述珩磨刀具还包括沿所述主杆的长度方向穿设在所述杆本体和连接体之间的导流孔，所述连接体上开设有与所述导流孔连通的流入孔，所述杆本体上开设有与所述导流孔连通的流出孔；所述流出孔开设于所述磨削组件靠近所述连接体的一侧方，且所述流出孔至所述磨削组件靠近所述连接体一侧的端部之间的距离为0.5mm～1mm；所述导流孔开设有两个，且两个所述导流孔分别位于对应的两侧；所述流入孔的入口位于所述连接体的外周面上；所述连接体的外周面上开设有第一密封环槽和第二密封环槽，所述第一密封环槽和第二密封环槽在所述主杆的延伸方向上分别位于所述流入孔的两侧方。
  2. 一种精密自定心内喷油珩磨刀具，所述珩磨刀具包括主杆、沿所述主杆的长度方向滑动的设于所述主杆内周的推杆、与待加工的孔内表面接触珩磨的磨削组件，其特征在于：所述主杆包括杆本体、固定连接在所述杆本体端部用于与主轴对接的连接体，所述连接体的外周面由靠近所述杆本体的一侧向远离所述杆本体的一侧呈锥形逐渐延伸缩小，所述珩磨刀具还包括将使所述连接体紧固在机床主轴上的安装结构。
  3. 根据权利要求2所述的精密自定心内喷油珩磨刀具，其特征在于：所述安装结构包括与所述连接体配合设置并将所述连接体固定在机床主轴上的安装件。
  4. 根据权利要求3所述的精密自定心内喷油珩磨刀具，其特征在于：所述安装结构还包括形成于所述连接体的靠近所述杆本体一侧外周上的卡台，所述连接体安装在机床主轴上时，所述安装件连接在所述卡台与机床主轴之间。
  5. 根据权利要求4所述的精密自定心内喷油珩磨刀具，其特征在于：所述安装件为环状部件，所述卡台的外周面开设有外螺纹，所述安装件的内周开设有内螺纹，所述安装件的 内周至少具有一部分与所述卡台螺纹连接，所述安装件的内周至少还具有一部分与机床主轴螺纹连接。
  6. 根据权利要求4所述的精密自定心内喷油珩磨刀具，其特征在于：所述卡台上开设有在圆周方向位于对应两侧的卡口。
  7. 根据权利要求2所述的精密自定心内喷油珩磨刀具，其特征在于：所述珩磨刀具还包括沿所述主杆的长度方向穿设在所述杆本体和连接体之间的导流孔，所述连接体上开设有与所述导流孔连通的流入孔，所述杆本体上开设有与所述导流孔连通的流出孔。
  8. 根据权利要求7所述的精密自定心内喷油珩磨刀具，其特征在于：所述流出孔开设于所述磨削组件靠近所述连接体的一侧方，且所述流出孔至所述磨削组件靠近所述连接体一侧的端部之间的距离为0.5mm～1mm。
  9. 根据权利要求7所述的精密自定心内喷油珩磨刀具，其特征在于：所述导流孔开设有两个，且两个所述导流孔分别位于对应的两侧。
  10. 根据权利要求7所述的精密自定心内喷油珩磨刀具，其特征在于：所述流入孔的入口位于所述连接体的外周面上。
  11. 根据权利要求10所述的精密自定心内喷油珩磨刀具，其特征在于：所述连接体的外周面上开设有第一密封环槽和第二密封环槽，所述第一密封环槽和第二密封环槽在所述主杆的延伸方向上分别位于所述流入孔的两侧方。
PCT/CN2020/135731 2019-12-26 2020-12-11 一种精密自定心内喷油珩磨刀具 WO2021129418A1 (zh)

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