阅读说明：本技术 一种多功能可调范围芯轴 (Multifunctional mandrel with adjustable range ) 是由 李刚 赵萍 王曰辉 米宁 李红红 靳建果 张鹏云 赵明月 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种多功能可调范围芯轴,包括：芯轴体、第一锥度块和第二锥度块、第一压盖和第一固定螺栓、第二压盖和第二固定螺栓。第一锥度块和第二锥度块能够套设在芯轴体的两端,以用于夹持待加工的深孔轴；第一固定螺栓螺纹连接至第一压盖并能够抵接至第二锥度块的外端面；第二压盖和第二锥度块之间还设置有调整环,第二固定螺栓螺纹连接至第二压盖,能够抵接至调整环,并使得调整环紧贴第二锥度块。由此,该装置可以与待加工的深孔轴形成为一个整体在车床上加工,可以避免加工时反复装夹、找正,提高加工精度,既能满足多孔径、多长度零件的使用要求,又能够在车床、外圆磨床、磨齿机等机床使用,可以实现可调范围使用和一物多用的目的。(The invention discloses a multifunctional adjustable range mandrel, which comprises: the core shaft body, the first taper block, the second taper block, the first gland, the first fixing bolt, the second gland and the second fixing bolt. The first taper block and the second taper block can be sleeved at two ends of the core shaft body so as to be used for clamping a deep hole shaft to be processed; the first fixing bolt is in threaded connection with the first gland and can abut against the outer end face of the second taper block; an adjusting ring is further arranged between the second gland and the second taper block, and the second fixing bolt is in threaded connection with the second gland and can be abutted to the adjusting ring, so that the adjusting ring is tightly attached to the second taper block. Therefore, the device can be integrally machined on a lathe together with a deep hole shaft to be machined, repeated clamping and alignment during machining can be avoided, machining precision is improved, the use requirements of parts with multiple apertures and multiple lengths can be met, the device can be used on machine tools such as lathes, cylindrical grinding machines and gear grinding machines, and the purposes of adjustable range use and multiple purposes of one object can be achieved.)

1. The utility model provides a multi-functional adjustable range dabber which characterized in that, multi-functional adjustable range dabber is used for processing deep hole axle, multi-functional adjustable range dabber includes:

a mandrel body configured as an elongated rod;

the first taper block and the second taper block are respectively provided with a central through hole, a first taper surface and a second taper surface are respectively arranged on the peripheries of the first taper block and the second taper block around the respective central through holes, the first taper block and the second taper block are sleeved at two ends of the core shaft body through the respective central through holes, and the first taper surface and the second taper surface are oppositely arranged so as to be used for clamping a deep hole shaft to be processed;

the first gland is in threaded connection with the mandrel body and located on one side, away from the second taper block, of the first taper block, the first fixing bolt extends along the axial direction of the mandrel body and is in threaded connection with the first gland, and the first fixing bolt can abut against the outer end face, away from the second taper block, of the first taper block;

second gland and second fixing bolt, second gland threaded connection to the mandrel body, and be located second taper piece is kept away from one side of first taper piece, the second gland with still be provided with the adjusting ring between the second taper piece, second fixing bolt follows the axial direction of mandrel body extends the setting and threaded connection to the second gland, second fixing bolt can butt joint to the adjusting ring, and make the adjusting ring hugs closely second taper piece.

2. The multifunctional adjustable range mandrel of claim 1 wherein said first taper block and said second taper block are each configured as a frustoconical structure having a central through hole, side surfaces of said frustoconical structure being formed as said first tapered surface and said second tapered surface.

3. The multifunctional adjustable range mandrel of claim 1,

the first gland is provided with a first central threaded hole penetrating through the mandrel body, and bolt holes for connecting the first fixing bolts are uniformly arranged on the periphery of the first central threaded hole of the first gland at intervals;

the second gland is provided with a second central threaded hole penetrating through the core shaft body, and bolt holes used for connecting second fixing bolts are uniformly arranged in the periphery of the second central threaded hole at intervals.

4. The multifunctional adjustable range mandrel of claim 1, further comprising:

the first end cover is arranged at the end part of the mandrel body and is positioned on one side of the first gland away from the second gland, and the first end cover can be fixedly connected with the mandrel body through a first fixing screw;

the second end cover is arranged at the other end of the mandrel body and located on one side, away from the first gland, of the second gland, and the second end cover can be fixedly connected with the mandrel body through a second fixing screw.

5. The multifunctional adjustable range mandrel of claim 4 wherein said mandrel body is provided at both ends with a first blind hole and a second blind hole, respectively, said first end cap having a first projection that can fit into said first blind hole, said second end cap having a second projection that can fit into said second blind hole.

6. The multifunctional adjustable range mandrel of claim 5 wherein said first blind holes are circumferentially spaced apart and provided with first threaded holes, said first set screws are connectable through said first end cap to said first threaded holes, said second blind holes are circumferentially spaced apart and provided with second threaded holes, said second set screws are connectable through said second end cap to said second threaded holes.

Technical Field

The invention relates to the technical field of shaft machining, in particular to a multifunctional adjustable-range mandrel.

Background

In order to reduce weight and cost of large-diameter shaft parts during design, a hollow design structure of shaft diameter is usually adopted. However, in machining such as a lathe, a cylindrical grinder, a gear grinding machine, etc., the fixed center cannot directly act on the shaft-like parts due to the hollow shaft diameter structure, and in actual machining, the umbrella-shaped movable center or a method of adding a blank cap is generally used for machining.

In the prior art, when an umbrella-shaped live center is used for fixing shaft parts to be machined, the umbrella-shaped live center often has a certain aperture adjusting range, and due to the structural limitation of a bearing arranged in the umbrella-shaped live center, the umbrella-shaped live center has a certain movement in the radial direction, and cannot be suitable for high-precision machining. When the method of increasing the blank cap is adopted to process the shaft parts, the blank cap needs to be processed in advance, the excircle of the blank cap needs to be processed independently according to the aperture size of the shaft to be processed, the excircle of the blank cap needs to be in transition fit with the shaft to be processed, in practice, the aperture size of the shaft has certain processing range and error, an enterprise needs to configure the blank cap independently according to the number of the shaft parts during processing, and the blank cap and the shaft are used in a one-to-one mode, so that the production cost of the enterprise is increased, and the labor intensity of workers is also improved.

Disclosure of Invention

To at least partially solve the technical problems in the prior art, the invention provides a multifunctional adjustable range mandrel.

The technical scheme of the invention is as follows:

the utility model provides a multi-functional adjustable range dabber which characterized in that, multi-functional adjustable range dabber is used for processing deep hole axle, multi-functional adjustable range dabber includes:

a mandrel body configured as an elongated rod;

the first taper block and the second taper block are respectively provided with a central through hole, a first taper surface and a second taper surface are respectively arranged on the peripheries of the first taper block and the second taper block around the respective central through holes, the first taper block and the second taper block are sleeved at two ends of the core shaft body through the respective central through holes, and the first taper surface and the second taper surface are oppositely arranged so as to be used for clamping a deep hole shaft to be processed;

the first gland is in threaded connection with the mandrel body and located on one side, away from the second taper block, of the first taper block, the first fixing bolt extends along the axial direction of the mandrel body and is in threaded connection with the first gland, and the first fixing bolt can abut against the outer end face, away from the second taper block, of the first taper block;

second gland and second fixing bolt, second gland threaded connection to the mandrel body, and be located second taper piece is kept away from one side of first taper piece, the second gland with still be provided with the adjusting ring between the second taper piece, second fixing bolt follows the axial direction of mandrel body extends the setting and threaded connection to the second gland, second fixing bolt can butt joint to the adjusting ring, and make the adjusting ring hugs closely second taper piece.

Optionally, the first taper block and the second taper block are each configured as a truncated cone-shaped structure having a central through hole, side surfaces of the truncated cone-shaped structure being formed as the first taper surface and the second taper surface.

Optionally, the first gland is provided with a first central threaded hole penetrating through the mandrel body, and bolt holes for connecting the first fixing bolts are uniformly arranged at intervals on the periphery of the first central threaded hole of the first gland;

the second gland is provided with a second central threaded hole penetrating through the core shaft body, and bolt holes used for connecting second fixing bolts are uniformly arranged in the periphery of the second central threaded hole at intervals.

Optionally, the multifunctional adjustable range mandrel further comprises:

the first end cover is arranged at the end part of the mandrel body and is positioned on one side of the first gland away from the second gland, and the first end cover can be fixedly connected with the mandrel body through a first fixing screw;

the second end cover is arranged at the other end of the mandrel body and located on one side, away from the first gland, of the second gland, and the second end cover can be fixedly connected with the mandrel body through a second fixing screw.

Optionally, two end portions of the mandrel body are respectively provided with a first blind hole and a second blind hole, the first end cover is provided with a first protruding block, the first protruding block can be fitted into the first blind hole, the second end cover is provided with a second protruding block, and the second protruding block can be fitted into the second blind hole.

Optionally, the first blind hole is circumferentially provided with first threaded holes at intervals, the first fixing screws can pass through the first end cap and connect to the first threaded holes, the second blind hole is circumferentially provided with second threaded holes at intervals, and the second fixing screws can pass through the second end cap and connect to the second threaded holes.

The technical scheme of the invention has the following main advantages:

the multifunctional adjustable range mandrel comprises a mandrel body, a first taper block, a second taper block, a first gland, a first fixing bolt, a second gland and a second fixing bolt, wherein a deep hole shaft to be machined can be sleeved on the mandrel body, the deep hole shaft to be machined is positioned from two sides through the first taper block and the second taper block, and then the deep hole shaft to be machined and the mandrel body are fixed through the first fixing bolt and the second fixing bolt, so that the deep hole shaft to be machined and the mandrel body form a complete component, and the complete component can be directly installed on a lathe for machining. Compared with the prior art, the multifunctional adjustable range mandrel can be integrally formed with a deep hole shaft to be machined on a lathe, repeated clamping and alignment during machining can be avoided, machining accuracy is improved, a lathe sheet is matched with a blank cap and a fitter installation blank cap process can be omitted during machining of an excircle grinding machine, the multifunctional adjustable range mandrel can meet the use requirements of parts with multiple apertures and lengths, and can be used on machine tools such as lathes, excircle grinding machines and gear grinding machines, and the purposes of adjustable range use and multiple purposes of one object can be achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a multifunctional adjustable range mandrel in accordance with one embodiment of the present invention;

FIG. 2 is a schematic structural view of a mandrel body in the multifunctional adjustable range mandrel shown in FIG. 1;

FIG. 3 is a schematic structural view of a first taper block in the multifunctional adjustable range mandrel shown in FIG. 1;

FIG. 4 is a schematic structural view of a gland in the multifunctional adjustable range mandrel shown in FIG. 1;

FIG. 5 is a schematic structural view of an end cap in the multifunctional adjustable range mandrel shown in FIG. 1;

fig. 6 is a schematic structural diagram of a dial plate for a multifunctional adjustable range mandrel according to one embodiment of the present invention.

Description of reference numerals:

10: deep hole shaft 11: the core shaft body 12: first taper block

13: second taper block 14: first gland 15: first fixing bolt

16: second gland 17: second fixing bolt 18: adjusting ring

21: first end cap 22: second end cap 23: first fixing screw

24: second fixing screw 31: the dial plate 32: jackscrew bolt

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1-6, in one embodiment according to the present invention, a multi-functional adjustable range mandrel is provided that can be used to machine deep hole shafts. When the machining is carried out, the deep hole shaft to be machined can be sleeved on the multifunctional adjustable range mandrel, the deep hole shaft to be machined and the multifunctional adjustable range mandrel can form a whole to be machined on a lathe, and repeated clamping and alignment during machining are effectively avoided.

In this embodiment, the multifunctional adjustable range mandrel comprises: the spindle body 11, the first taper block 12 and the second taper block 13, the first gland 14 and the first fixing bolt 15, and the second gland 16 and the second fixing bolt 17.

Specifically, as shown in fig. 1 and 2, the mandrel body 11 is configured in a long bar shape.

The first taper block 12 and the second taper block 13 are used for positioning and fixing a deep hole shaft 10 to be processed on the mandrel body 11, as shown in fig. 1 and fig. 3, the first taper block 12 and the second taper block 13 both have a central through hole, the first taper block 12 and the second taper block 13 are respectively provided with a first taper surface and a second taper surface around the periphery of the respective central through hole, the first taper block 12 and the second taper block 13 are sleeved at two ends of the mandrel body 11 through the respective central through holes, and the first taper surface and the second taper surface are arranged oppositely to be used for clamping the deep hole shaft 10 to be processed. Preferably, the first taper block 12 and the second taper block 13 may have identical structures.

The first gland 14 and the first fixing bolt 15, and the second gland 16 and the second fixing bolt 17 are used to fix the deep-hole shaft 10 to be processed from both sides of the deep-hole shaft 10, respectively. As shown in fig. 1 and 4, the outer surfaces of the two ends of the mandrel body 11 are respectively provided with external threads, a first gland 14 can be screwed to the mandrel body 11 and is located on one side of the first taper block 12 away from the second taper block 13, a first fixing bolt 15 is arranged to extend along the axial direction of the mandrel body 11 and is screwed to the first gland 14, and the first fixing bolt 15 can abut against the outer end surface of the first taper block 12 away from the second taper block 13; similarly, the second gland 16 may also be screwed to the spindle body 11 and located on a side of the second taper block 13 away from the first taper block 12, and the second fixing bolt 17 is extended along the axial direction of the spindle body 11 and screwed to the second gland 16.

In the present embodiment, an adjusting ring 18 is further disposed between the second gland 16 and the second taper block 13, the adjusting ring 18 can be sleeved on the spindle body 11, the second fixing bolt 17 can abut against the adjusting ring 18 when being screwed to the second gland 16, and the adjusting ring 18 is made to abut against the second taper block 13.

Therefore, when deep hole shafts with different lengths and different bore diameters are machined, the adjusting rings 18 with different thicknesses can be selected and mounted on the mandrel body 11, so that the deep hole shafts 10 can be positioned and fixed better.

Further, as shown in fig. 3, the first taper block 12 and the second taper block 13 are each configured as a circular truncated cone-like structure having a central through hole, and side surfaces of the circular truncated cone-like structure are formed as a first tapered surface and a second tapered surface.

In order to enable the deep hole shaft 10 to be processed to be positioned under uniform force, in the present embodiment, as shown in fig. 4, the first gland 14 has a first central threaded hole penetrating through the mandrel body 11, and the first gland 14 is provided with bolt holes for connecting the first fixing bolts 15 at uniform intervals on the periphery of the first central threaded hole, for example, 4 bolt holes may be provided; the second gland 16 has a second central threaded hole penetrating the mandrel body 11, and bolt holes for connecting the second fixing bolts 17 are uniformly arranged at intervals on the periphery of the second central threaded hole of the second gland 16, for example, 4 bolt holes may be also arranged.

In this embodiment, the multifunctional adjustable range mandrel further comprises a first end cap 21 and a second end cap 22. As shown in fig. 1, the first end cap 21 is disposed at an end of the spindle body 11 and located on a side of the first gland 14 away from the second gland 16, and the first end cap 21 can be fixedly connected with the spindle body 11 by a first fixing screw 23; the second end cap 22 is disposed at the other end of the spindle body 11 and located at a side of the second gland 16 away from the first gland 14, and the second end cap 22 can be fixedly connected with the spindle body 11 through a second fixing screw 24.

Therefore, when machining is carried out, the lathe clamping jaw and the tip can be respectively fixed and abutted to the end covers at two ends of the multi-function adjustable range mandrel, the end covers at the two ends can play a role in protecting the mandrel body 11, and meanwhile, installation of different lathes is facilitated.

In this embodiment, the end caps may be fixed to both ends of the core shaft body 11 by means of spigots and bolts, as one implementation, as shown in fig. 1, 2 and 5, both ends of the core shaft body 11 are respectively provided with a first blind hole and a second blind hole, the first end cap 21 has a first projection which can be fitted into the first blind hole, and the second end cap 22 has a second projection which can be fitted into the second blind hole.

In addition, in order to make the stress between the end cover and the mandrel body 11 uniform, in the present embodiment, the first blind holes are circumferentially spaced and provided with first threaded holes, the first fixing screws 23 can pass through the first end cover 21 to be connected to the first threaded holes, the second blind holes are circumferentially spaced and provided with second threaded holes, and the second fixing screws 24 can pass through the second end cover 22 to be connected to the second threaded holes.

As shown in fig. 1, when a deep hole shaft 10 needs to be machined, a specific installation manner of the multifunctional adjustable-range mandrel and the deep hole shaft to be machined in the embodiment may be as follows:

the first taper block 12 on the left side, the first gland 14 and the first end cover 21 are installed on the mandrel body 11, the first gland 14 is in threaded connection with the mandrel body 11, and the first end cover 21 is connected to the mandrel body 11 through a first fixing screw. Then, a deep hole shaft part to be processed is sleeved in the middle of the core shaft body 11, and the left end of the deep hole shaft 10 is in close contact with the first taper block 12. Then, the right second taper block 13, the second gland 16 and the second end cap 22 are mounted on the mandrel body 11, the second gland 16 and the mandrel body 11 are in threaded connection, and the second end cap 22 is connected to the mandrel body 11 through a second fixing screw. The first fixing bolt 15 is in threaded connection with the first gland 14 and then penetrates through the first gland 14 and abuts against the first taper block 12, and the second fixing bolt 17 is in threaded connection with the second gland 16 and then penetrates through the second gland 16 and abuts against the second taper block 13, so that effective positioning of a deep-hole shaft part to be machined is achieved. Meanwhile, an adjusting ring 18 with an appropriate thickness can be selected according to the length dimension of the deep hole shaft during installation and installed between the second cone 13 and the second gland 16. Thereby, the deep-hole shaft part to be machined and the multifunctional adjustable range mandrel are formed as one integral part.

During machining, the left end of the integral component can be arranged on a lathe clamping jaw, the right end of the integral component is fixed through a centre, and then the excircle end face of the deep hole shaft can be machined simultaneously.

Through the installation and processing mode, repeated clamping and alignment during processing can be avoided, the processing precision is improved, and the processes of matching a lathe sheet with a blank cap and installing the blank cap by a fitter can be omitted during processing of the outer circle grinding machine, so that the working strength of workers is reduced, and the processing efficiency is improved.

And after the lathe machining is finished, the integral part can be hoisted to a cylindrical grinding machine as a whole, the centers on the left side and the right side are fixed, the clamping of the cylindrical grinding machine can be finished, after the processing of the cylindrical grinding machine is finished, a shifting plate 31 shown in figure 6 can be installed on the device, the end part of a core shaft body 11 and the shifting plate 31 are fixed together through a jackscrew bolt 32 to form a new assembly, the new assembly can be installed on a gear grinding machine, the positioning is carried out through center holes of end covers at two ends of the core shaft body 11, and the shifting plate 31 is connected with a shifting block assembly of the gear grinding machine. By adopting the installation mode, the processing requirement required by installation can be met, meanwhile, the process of installing the gear grinding clamp by workers can be omitted, and after all processing is finished, the processed deep-hole shaft part can be hoisted out after the second taper block 13, the second gland 16, the second end cover 22 and other parts at the right end of the spindle body 11 are removed, so that the processing is finished.

It can be understood that the multifunctional adjustable range mandrel in the embodiment can be repeatedly used in the machining process, and all the components can be recycled.

Therefore, the multifunctional adjustable range mandrel in the embodiment has the following advantages:

the mandrel body can meet the requirements of processing shaft parts with multiple ranges of apertures and lengths, and the application range is wide; the mandrel body can be assembled with a deep hole shaft to be processed into a whole, and can be used in a plurality of processing devices such as a lathe, a cylindrical grinder, a gear grinding machine and the like after one-time clamping is finished, so that the clamping and aligning times can be reduced, and the working efficiency can be improved; the device integrates the use functions of a lathe, a cylindrical grinding machine and a gear grinding machine, and achieves the effect of multiple purposes; the multifunctional adjustable range mandrel adopts a split design, and when individual parts are damaged, the multifunctional adjustable range mandrel can be replaced in time, so that the whole device is prevented from being scrapped, and the production cost is reduced; the deep hole shaft to be processed and the taper block are in taper fit, so that the mounting precision is high; this multi-functional adjustable range dabber can used repeatedly many times, reduction in production cost.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.