CN214816264U

CN214816264U - Rolling cutter head

Info

Publication number: CN214816264U
Application number: CN202120638892.3U
Authority: CN
Inventors: 姜泽宇; 姜万禄; 吕永鹏; 刘学; 李俊芝; 曲文秀; 戴一凡; 吴欢
Original assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Current assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-11-23
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to a roll extrusion tool bit, including cutter arbor, pull rod, positioner and tool bit subassembly, the pull rod telescopic sets up in the vestibule of cutter arbor, and pull rod one end is located the vestibule of cutter arbor to establish in the draw-in groove of cutter arbor vestibule lateral wall through the pin rod card, the other end of pull rod stretches out the cutter arbor, and cooperates with tool bit subassembly suit, the positioner suit is on the cutter arbor to be connected with the pin rod, be used for injecing the processing position of tool bit subassembly. It can set up the location through positioner, and the tool bit direct action needs the roll extrusion position, and is efficient, effectual.

Description

Rolling cutter head

Technical Field

The utility model relates to the technical field of machining, especially, relate to a roll extrusion tool bit.

Background

When the existing bearing outer ring is used for machining a mounting hole, due to the fact that two ends are in butt joint type machining is adopted in the process of machining the hole through a drill bit, butt joint positions in hole walls are not uniform, roughness is poor, and rolling machining needs to be conducted. When the butt joint part inside the hole wall is processed by using the traditional rolling cutter head, the whole inner wall of the hole needs to be rolled, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rolling tool bit, its direct action is in the position that needs the roll extrusion, and is efficient, effectual to prior art not enough.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a roll extrusion tool bit, includes cutter arbor, pull rod, positioner and tool bit subassembly, and the pull rod telescopic sets up in the vestibule of cutter arbor, and pull rod one end is located the vestibule of cutter arbor to establish in the draw-in groove of cutter arbor vestibule lateral wall through the pin rod card, the other end of pull rod stretches out the cutter arbor, and with tool bit subassembly suit cooperation, positioner suit is on the cutter arbor, and is connected with the pin rod for inject the processing position of tool bit subassembly.

Furthermore, positioner includes cotter, bearing frame and adjusting collar, and the cotter suit is on the cutter arbor, and one end is connected with the cotter, and the other end is connected with the bearing frame through first bearing, and the one end and the adjusting collar threaded connection of first bearing are kept away from to the bearing frame.

Furthermore, a locking nut is arranged on the adjusting sleeve and is positioned below the bearing seat.

Further, the cutter head assembly comprises a drum wheel frame and a drum wheel, the drum wheel frame is sleeved on the taper section of the pull rod, and the drum wheel is arranged on the drum wheel frame in an expandable and contractible mode.

Further, a second bearing is arranged between the cutter head assembly and the cutter bar, and the second bearing is a thrust bearing.

Furthermore, a spring is arranged between the pull rod and the cutter head assembly, an annular flange is arranged at the lower end of the pull rod, the spring is sleeved on the pull rod and located between the annular flange and the drum frame, one end of the spring is abutted against the annular flange, and the other end of the spring is abutted against the drum frame.

Further, the drum is a conical cylinder or a cylinder.

Furthermore, the drum wheels are longitudinally and uniformly distributed in rolling grooves in the drum wheel frame, the drum wheels can freely rotate in a space limited by the rolling grooves, and the drum wheels can realize expansion and contraction under the driving of the taper section.

Further, the upper end of the cutter bar is provided with a connecting part, and the connecting part is connected with a machine tool.

Furthermore, two ends of the pin rod are respectively provided with a fastening nut.

Compared with the prior art, the utility model beneficial effect be:

the utility model provides a roll extrusion tool bit, including cutter arbor, pull rod, positioner and tool bit subassembly, the pull rod telescopic sets up in the vestibule of cutter arbor, and pull rod one end is located the vestibule of cutter arbor to establish in the draw-in groove of cutter arbor vestibule lateral wall through the pin rod card, the cutter arbor is stretched out to the other end of pull rod, and with tool bit subassembly suit cooperation, positioner suit is on the cutter arbor to be connected with the pin rod, be used for injecing the processing position of tool bit subassembly. It can set up the location through positioner, and the tool bit direct action needs the roll extrusion position, and is efficient, effectual.

Drawings

Fig. 1 is a schematic view of a processing state of a rolling tool bit head according to an embodiment of the present invention;

figure 2 is a schematic view of the rolling bit of figure 1 in the direction of direction a-a.

In the figure: 1. the cutter arbor, 1.1, connecting portion, 1.2, the draw-in groove, 2, the pull rod, 2.1, the tapering section, 2.2, cyclic annular flange, 3, positioner, 3.1, the pin bushing, 3.2, the bearing frame, 3.3, the adjusting collar, 3.4, first bearing, 3.5, lock nut, 3.6, first jump ring, 3.7, the second jump ring, 4, the tool bit subassembly, 4.1, the drum frame, 4.2, the drum, 5, the pin pole, 6, the second bearing, 7, the spring, 8, fastening nut, 9, wait to process the hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1

As shown in fig. 1-2, a rolling cutter head is used for machining a hole wall, and comprises a cutter bar 1, a pull rod 2, a positioning device 3 and a cutter head assembly 4, wherein the upper end of the cutter bar 1 is provided with a connecting part 1.1 connected with a machine tool; one end of a pull rod 2 is positioned in a hole cavity of the cutter bar 1 and is clamped in a clamping groove 1.2 on the side wall of the hole cavity of the cutter bar 1 through a pin rod 5 and can rotate along with the rotation of the cutter bar 1, the other end of the pull rod 2 extends out of the lower end of the cutter bar 1 and is positioned outside the cutter bar 1 and is in sleeved fit with a cutter head component 4, and the pull rod 2 can do telescopic motion relative to the cutter bar 1 and the cutter head component 4; the clamping groove 1.2 in the embodiment is a long strip-shaped hole groove symmetrically arranged along the axial direction of the cutter rod 1, the pull rod 2 is in clearance fit with the hole cavity of the cutter rod 1, the pin rod 5 penetrates through a radial through hole at the upper end of the pull rod 2 and is clamped in the long strip-shaped hole groove, and the pin rod 5 and the radial through hole at the upper end of the pull rod 2 can be assembled in an interference fit mode. It should be noted that the length of the slot 1.2 defines the telescopic distance of the pull rod 2 relative to the cutter bar 1 and the cutter head assembly 4 (i.e. the telescopic amount of the pull rod 2 relative to the cutter bar 1 and the cutter head assembly 4 is matched with the length of the slot 1.2).

The positioning device 3 is slidably sleeved on the outer side of the cutter bar 1 and connected with the pin rod 5, can rotate along with the rotation of the cutter bar 1 and simultaneously axially moves relative to the cutter bar 1 together with the pull rod 2, and the positioning device 3 is used for limiting the machining position (depth) of the cutter head component 4. When the tool bit assembly is used, the lower end face of the positioning device 3 abuts against a workpiece, and the tool bit in the tool bit assembly 4 extends into a hole to be machined in the workpiece and is located at a designated position on the wall of the hole.

Above-mentioned technical scheme can lead to positioner 3 and set up the depth of location, needs the roll extrusion position with 4 direct actions of tool bit subassembly, and is efficient, effectual.

The positioning device 3 comprises a pin sleeve 3.1, a bearing seat 3.2 and an adjusting sleeve 3.3 which are sequentially sleeved on the cutter rod 1, the pin sleeve 3.1 is slidably sleeved on the cutter rod 1, one end of the pin sleeve is connected with the pin rod 5, the other end of the pin sleeve is connected with the bearing seat 3.2 through a first bearing 3.4, a hole cavity of one end, far away from the first bearing 3.4, of the bearing seat 3.2 is in threaded connection with the adjusting sleeve 3.3, the adjusting sleeve 3.3 is slidably sleeved on the cutter rod 1, and the adjusting sleeve 3.3 is used for adjusting the overall length of the positioning device 3, so that the effective machining position (depth) of the cutter rod 1 is limited.

Specifically, the upper end of the pin sleeve 3.1 is provided with a pin hole matched with the pin rod 5, two ends of the pin rod 5 are inserted into the pin hole on the pin sleeve 3.1, and two ends of the pin rod 5 are assembled with the pin hole on the pin sleeve 3.1 in an interference fit manner. In order to increase the stability of the pin rod 5 and prevent the pin rod 5 from falling off, two ends of the pin rod 5 are respectively provided with a fastening nut 8. In the embodiment, two ends of the pin rod 5 extending out of the pin sleeve 3.1 are respectively in threaded connection with the fastening nuts 8.

In this embodiment, the first bearing 3.4 is a deep groove ball bearing, the inner ring of the first bearing 3.4 is sleeved at the lower end of the pin bush 3.1, the upper end surface of the inner ring of the first bearing 3.4 abuts against a shaft shoulder on the pin bush 3.1, a first snap spring 3.6 is arranged between the lower end surface of the inner ring of the first bearing 3.4 and the pin bush 3.1, the first snap spring 3.6 is clamped in a clamping groove formed in the outer peripheral wall of the pin bush 3.1, the outer ring of the first bearing 3.4 is arranged in an installation hole of the bearing block 3.2, the lower end surface of the outer ring of the first bearing 3.4 abuts against a step in the installation hole, a second snap spring 3.7 is arranged between the upper end surface of the outer ring of the first bearing 3.4 and the installation hole, and the second snap spring 3.7 is clamped in the clamping groove formed in the hole wall of the installation hole.

The adjusting sleeve 3.3 is provided with an external thread, a hole cavity at one end (namely the lower end of the bearing seat 3.2) of the bearing seat 3.2 far away from the first bearing 3.4 is provided with an internal thread matched with the external thread on the adjusting sleeve 3.3, the adjusting sleeve 3.3 is in threaded connection with the hole cavity at the lower end of the bearing seat 3.2 and can be screwed in and out of the hole cavity at the lower end of the bearing seat 3.2, and it needs to be noted that the hole cavity at the lower end of the bearing seat 3.2 is provided with enough space to accommodate the adjusting sleeve 3.3, so that the screwing-in and screwing-out of the adjusting sleeve 3.3 are realized. I.e. the axial dimension of the bore at the lower end of the bearing seat 3.2 is adapted to the axial dimension of said adjusting sleeve 3.3.

In order to prevent the threaded connection between the adjusting sleeve 3.3 and the bearing seat 3.2 from loosening, a locking nut 3.5 is arranged on the adjusting sleeve 3.3, and the locking nut 3.5 is positioned below the bearing seat 3.2 and is screwed with the adjusting sleeve 3.3 through threads. The adjusting sleeve 3.3 is prevented from rotating loose by the friction between the matching surfaces of the locking nut 3.5 and the bearing seat 3.2.

It should be noted that in another embodiment of the present application, the hole cavity of the adjusting sleeve 3.3 is provided with an internal thread, one end of the bearing seat 3.2 far away from the first bearing 3.4 is provided with an external thread matching with the internal thread on the hole cavity of the adjusting sleeve 3.3, the hole cavity of the adjusting sleeve 3.3 is in threaded connection with the lower end of the bearing seat 3.2, the lower end of the bearing seat 3.2 is provided with a lock nut 3.5, the lock nut 3.5 is located above the adjusting sleeve 3.3 and is in threaded connection with the lower end of the bearing seat 3.2, so as to prevent the threaded connection between the adjusting sleeve 3.3 and the bearing seat 3.2 from loosening.

The cutter head component 4 comprises a drum wheel frame 4.1 and a drum wheel 4.2, one end of the pull rod 2 extending out of the cutter rod 1 is provided with a taper section 2.1, the drum wheel frame 4.1 is sleeved on the taper section 2.1 on the pull rod 2, the drum wheel 4.2 can be mounted on the drum wheel frame 4.1 in an expanding and contracting mode, the drum wheel 4.2 is in conical surface contact with the taper section 2.1, the drum wheel 4.2 is a cylinder or a conical cylinder, the drum wheel 4.2 in the embodiment is a conical cylinder, the drum wheel 4.2 is longitudinally and uniformly distributed in a rolling groove in the drum wheel frame 4.1, and the drum wheel 4.2 can freely rotate in a space limited by the rolling groove. The working surface (peripheral surface) of the drum 4.2 can roll on the conical surface of the conical section 2.1, and the drum 4.2 can realize expansion and retraction in the rolling groove under the driving of the conical surface. It should be noted that the taper section 2.1 on the pull rod 2 in this embodiment has a taper larger than that of the drum 4.2, and the taper direction of the taper section 2.1 is opposite to that of the drum 4.2. The direction of the taper section 2.1 on the pull rod 2 is the same as the contraction direction of the pull rod 2 (relative to the cutter bar 1), namely the diameter of the taper section 2.1 is gradually reduced along the contraction direction of the pull rod 2. When the pull rod 2 is contracted, the drum wheel 4.2 is in an expanded state, and when the pull rod 2 is extended, the drum wheel 1.2 is in a contracted state.

Be provided with second bearing 6 between tool bit subassembly 4 and the cutter arbor 1, second bearing 6 be thrust ball bearing, thrust ball bearing's shaft collar fixed mounting (interference fit) is on the axial flange on drum wheel carrier 4.1, thrust ball bearing's seat circle is contradicted with cutter arbor 1 lower terminal surface.

A spring 7 is arranged between the pull rod 2 and the cutter head component 4, an annular flange 2.2 is arranged at the lower end part of the pull rod 2 in the embodiment, the spring 7 is sleeved on the pull rod 2 and is positioned between the annular flange 2.2 and the drum frame 4.1, one end of the spring 7 is abutted against the annular flange 2.2, and the other end of the spring is abutted against the lower end face of the drum frame 4.1. The outer diameter of the annular flange 2.2 is smaller than the inner diameter of the machined hole 9.

It should be noted that, in the non-machining state, the pull rod 2 relatively extends out of the cutter bar 1 under the action of the elastic force of the spring 7, the drum 4.2 is in the contracted state, the drum 4.2 is close to the small-diameter end side of the taper section 2.1, in the machining state, under the action of the thrust force (downward pressure) of the cutter bar 1, the pull rod 2 relatively contracts in the cutter bar 1, the drum 4.2 is in the expanded state, and the drum 4.2 is close to the large-diameter end side of the taper section 2.1.

The working process of the embodiment:

the connecting part 1.1 of the upper end of the cutter bar 1 is arranged on the rotary bed, the cutter bar 1 is connected with the pin bush 3.1 and the pull rod 2 through the pin rod 5, and the pin bush 3.1 and the pull rod 2 rotate together in the rotating process of the cutter bar 1. The pin bush 3.1 is fixed in the first bearing 3.4 internal diameter, and the first bearing 3.4 external diameter is connected with bearing frame 3.2, carries out radial fixation with first jump ring 3.6 and second jump ring 3.7. The adjusting sleeve 3.3 is in threaded connection with the bearing seat 3.2, so that the bearing seat 3.2 together with the adjusting sleeve 3.3 and the locking nut 3.5 are fixed in the process that the cutter bar 1 rotates together with the cutter bar. Before the hole rolling processing, the distance between the lower end of the adjusting sleeve 3.3 and the drum wheel 4.2 needs to be adjusted according to the depth of the hole to be processed 9, and after the adjusting sleeve 3.3 is adjusted, the locking nut 3.5 is fastened to ensure the stability of the adjusting sleeve 3.3. When the rolling cutter head extends into the hole 9 to be processed, the pull rod 2 is in a telescopic state under the action of the elastic force of the spring 7, the drum wheel 4.2 is in a contracted state, so that the contact between the drum wheel 4.2 and the inner wall of the hole 9 to be processed can be avoided, when the rolling hole starts, the adjusting sleeve 3.3 is positioned at the outer edge of the hole 9 to be processed, the drum wheel 4.2 extends to a determined processing position to work, after the lower end of the adjusting sleeve 3.3 is fixedly contacted with the upper end face of the outer edge of the hole 9 to be processed, the positioning is kept still, the cutter bar 1 is continuously pressed downwards, the cutter bar 1 applies downward pressure to the second bearing 6, the second bearing 6 presses the drum wheel frame 4.1 and the drum wheel 4.2 downwards, at the moment, the pull rod 2 contracts relative to the drum wheel frame 4.1 and the cutter bar 1, the spring 7 starts to be compressed, the drum wheel 4.2 is contacted with the conical surface of the tapered section 2.1 of the pull rod 2, the drum wheel frame 4.1 and the drum wheel 4.2 move downwards and are contacted with the large diameter of the conical surface of the pull rod 2 to enable the drum wheel 4.2 to expand (expand the drum wheel 4.2), the rotation of the pull rod 2 drives the rotation of the drum 4.2, so that the drum 4.2 expands (bulges) and rotates in the downward process to achieve the rolling effect. After the rolling operation is finished, the cutter bar 1 moves upwards and retreats, the lower end face of the adjusting sleeve 3.3 leaves the upper end face of the hole 9 to be machined, the pressure on the drum wheel frame 4.1 disappears, the spring 7 rebounds to reset the pull rod 1, namely, the lower end of the pull rod 1 extends out relative to the roller wheel frame 4.1 and the cutter bar 1, the drum wheel 4.2 in the drum wheel frame 4.1 moves from the large radial direction and the small radial direction of the conical surface of the pull rod 2, the drum wheel 4.2 contracts to separate from the hole wall of the hole 9 to be machined, and then the rolling cutter head withdraws from the hole 9 to be machined.

Compared with the prior art, the embodiment has the beneficial effects that:

the rolling tool bit head of this embodiment can set up through positioner 3 and fix a position the directness and need the roll extrusion position, and is efficient, effectual.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A rolling cutter head, its characterized in that: the cutter comprises a cutter rod, a pull rod, a positioning device and a cutter head assembly, wherein the pull rod is arranged in a hole cavity of the cutter rod in a telescopic mode, one end of the pull rod is located in the hole cavity of the cutter rod and is clamped in a clamping groove in the side wall of the hole cavity of the cutter rod through a pin rod, the other end of the pull rod extends out of the cutter rod and is matched with the cutter head assembly in a sleeved mode, and the positioning device is sleeved on the cutter rod, connected with the pin rod and used for limiting the machining position of the cutter head assembly.

2. The rolling bit of claim 1, wherein: the positioning device comprises a pin bush, a bearing seat and an adjusting bush, the pin bush is sleeved on the cutter bar, one end of the pin bush is connected with the pin rod, the other end of the pin bush is connected with the bearing seat through a first bearing, and one end, far away from the first bearing, of the bearing seat is in threaded connection with the adjusting bush.

3. The rolling bit of claim 1, wherein: the first bearing is a deep groove ball bearing, the lower end of a pin sleeve is sleeved with the inner ring of the first bearing, the upper end face of the inner ring of the first bearing is abutted to a shaft shoulder on the pin sleeve, a first clamp spring is arranged between the lower end face of the inner ring of the first bearing and the pin sleeve, the first clamp spring is clamped in a clamping groove formed in the peripheral wall of the pin sleeve, the outer ring of the first bearing is installed in a mounting hole of a bearing seat, the lower end face of the outer ring of the first bearing is abutted to a step in the mounting hole, a second clamp spring is arranged between the upper end face of the outer ring of the first bearing and the mounting hole, and the second clamp spring is clamped in the clamping groove formed in the hole wall of the mounting hole.

4. The rolling bit of claim 1, wherein: the cutter head assembly comprises a drum wheel frame and a drum wheel, the drum wheel frame is sleeved on the taper section of the pull rod, the drum wheel is installed on the drum wheel frame, and the diameter of the taper section is gradually decreased along the contraction direction of the pull rod.

5. The rolling bit of claim 4, wherein: and a second bearing is arranged between the cutter head component and the cutter bar.

6. The rolling bit of claim 5, wherein: the second bearing is a thrust ball bearing, a shaft ring of the thrust ball bearing is fixedly arranged on an axial flange on the drum wheel carrier, and a seat ring of the thrust ball bearing is abutted against the lower end face of the cutter bar.

7. The rolling bit of claim 4, wherein: the spring is arranged between the pull rod and the cutter head assembly, an annular flange is arranged at the lower end of the pull rod, the spring is sleeved on the pull rod and located between the annular flange and the drum frame, one end of the spring is abutted to the annular flange, and the other end of the spring is abutted to the drum frame.

8. The rolling bit of claim 4, wherein: the drum wheel is a conical cylinder or a cylinder.

9. The rolling bit of claim 4, wherein: the drum wheel is longitudinally and uniformly distributed in a rolling groove in the drum wheel frame, the drum wheel can freely rotate in a space limited by the rolling groove, and the drum wheel can realize expansion and contraction under the driving of the taper section.

10. The rolling cutter head according to any one of claims 1 to 9 wherein: the upper end of the cutter bar is provided with a connecting part, and the connecting part is connected with a machine tool.