WO2021129419A1

WO2021129419A1 - Honing tool for machining large aperture

Info

Publication number: WO2021129419A1
Application number: PCT/CN2020/135736
Authority: WO
Inventors: 石惠林; 朱正权
Original assignee: 苏州信能精密机械有限公司
Priority date: 2019-12-26
Filing date: 2020-12-11
Publication date: 2021-07-01
Also published as: CN111015497A

Abstract

A honing tool for machining a large aperture. The honing tool is provided with an axial direction X and a radial direction Y that are perpendicular to each other. The honing tool comprises a main supporting mechanism, a plurality of grinding assemblies slidably arranged on the main supporting mechanism in the radial direction Y, and a push rod (22) assembly slidably arranged in the inner periphery of the main supporting mechanism in the axial direction X, wherein the main supporting mechanism comprises a mandrel (10) extending in the axial direction X, and a first supporting plate (11) and a second supporting plate (12) that are fixedly connected to two ends of the mandrel, each grinding assembly comprises a plurality of sliding seats (31) that are distributed successively at intervals in the circumferential direction, a plurality of sets of sand strips (321) and guide strips (322), and a plurality of connecting assemblies each of which is connected between each set of sand strips and guide strips and the corresponding sliding seat, each sliding seat is slidably arranged between the first supporting plate and the second supporting plate in the radial direction Y, the push rod assembly comprises a pushing cone rod (21), and the pushing cone rod is slidably arranged on the inner periphery of the mandrel in the axial direction X. The honing tool for machining a large aperture is different from a traditional honing tool in structure, the overall structure is compact and rational, the weight is light, consumables are few, and wastage is avoided.

Description

Honing tool for machining large aperture

Technical field

The invention relates to a honing tool for machining large apertures.

Background technique

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 tool in the prior art generally has a main rod with a slidable push rod on the inner circumference of the main rod. In addition, the grinding assembly is slidably arranged on the main rod along the radial direction of the tool rod. For small honing tools, due to the small structure of each part of the tool, the above-mentioned structure setting method is adopted, and the overall weight of the tool after the overall assembly is not multiple, and the consumables are more reasonable; but for the honing tool with a larger processing aperture, the above structure is adopted The setting method is bound to use a very thick metal rod for the main rod. The consumables are serious and the weight of the tool is too large. Obviously this structure is unreasonable. In addition, the existing honing tool generally has a fixed sand bar for the grinding component. On the supporting block, the supporting block is slidably arranged along the main rod. With this structure, the sand bar cannot be disassembled, at least not quickly disassembled or replaced.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a honing tool for machining large apertures.

In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

A honing tool for machining large apertures. The honing tool has mutually perpendicular axial and radial directions. The honing tool includes a main support mechanism, multiple groups of grinding components that are slidably arranged on the main support mechanism in the radial direction, and a device that slides in the axial direction. The push rod assembly on the inner circumference of the main support mechanism. The main support mechanism includes a mandrel extending in the axial direction, a first support plate and a second support plate fixedly connected to the two ends of the mandrel, and the grinding assembly includes a grinding assembly arranged at intervals in the circumferential direction. Multiple sliding seats, multiple sets of sand bars and guide bars, multiple sets of connecting components respectively connected to each group of sand bars, guide bars and each slide seat, each slide seat is slidably arranged on the first support in the radial direction Between the plate and the second support plate, the push rod assembly includes a push cone rod, which is arranged on the inner circumference of the mandrel to slide in the axial direction; the grinding assembly also includes a grinding assembly that passes through the mandrel and is connected to the push cone rod and each sliding rod. There are multiple drive jacks between the seats. One end of the drive jack slides in cooperation with the pusher rod, and the other end is fixedly connected to the sliding seat; the pusher rod has a first pusher and a second pusher that are sequentially distributed along the axial direction. Taper part, one of the multiple drive jacks is located between the first taper part and each sliding seat, and another set is located between the second taper part and each sliding seat; the length of the sliding seat is its width value 4 to 5 times; the connecting component includes a first component and a second component connected between the sand bar, the guide bar and the sliding seat, the first component is fixedly connected to the sand bar, the guide bar, and the second component is fixedly connected to the sliding seat , The first component and the second component can be clamped to each other; the first component is formed with a clamping protrusion, and the second component is formed with a clamping hole that cooperates with the clamping protrusion; the first component includes a sand bar, A fixing plate fixedly connected to the guide bar, a staple fixed on the fixed plate, one end of the staple penetrates the fixed plate and forms a clamping protrusion; the second component includes a first plate and a second plate that are vertically connected by a pin , The first plate and the outer side of the sliding seat in the width direction are attached and butted, and the second plate is attached and butted to one side in the thickness direction of the sliding seat and fixed by bolts; the main support mechanism also includes a second support plate that can be The connecting shaft is disassembled. The push rod assembly further includes a push rod that is arranged on the inner circumference of the connecting shaft to slide along the axial direction. The shaft centers of the push rod, the pusher rod, the mandrel, and the connecting shaft are arranged to coincide with each other; the honing tool also includes A retracting mechanism used to retract the honing assembly in the radial direction.

A honing tool for machining large apertures. The honing tool has mutually perpendicular axial and radial directions. The honing tool includes a main support mechanism, multiple groups of grinding components that are slidably arranged on the main support mechanism in the radial direction, and a device that slides in the axial direction. The push rod assembly on the inner circumference of the main support mechanism. The main support mechanism includes a mandrel extending in the axial direction, a first support plate and a second support plate fixedly connected to the two ends of the mandrel, and the grinding assembly includes a grinding assembly arranged at intervals in the circumferential direction. Multiple sliding seats, multiple sets of sand bars and guide bars, multiple sets of connecting components respectively connected to each group of sand bars, guide bars and each slide, each slide is slid in the radial direction and is set on the first support Between the plate and the second supporting plate, the push rod assembly includes a push cone rod, and the push cone rod is slidably arranged on the inner circumference of the mandrel along the axial direction.

Preferably, the grinding assembly further includes a plurality of driving jacks passing through the mandrel and connected between the pusher rod and each sliding seat. One end of the driving jack slides in cooperation with the pusher rod, and the other end of the driving jack slides with the sliding seat. Fixed connection.

Preferably, the taper rod has a first taper portion and a second taper portion that are sequentially distributed along the axial direction. One set of the multiple drive jacks is located between the first taper portion and each sliding seat, and another set is located between the first taper portion and each sliding seat. Between the second push cone part and each sliding seat.

Preferably, the length of the sliding seat is 4 to 5 times its width.

Preferably, the connecting assembly includes a first assembly and a second assembly connected between the sand bar, the guide bar and the sliding seat. The first assembly is fixedly connected to the sand bar and the guide bar, and the second assembly is fixedly connected to the sliding seat. The component and the second component can be connected to each other.

Preferably, the first component is formed with a clamping protrusion, and the second component is formed with a clamping hole for mating and clamping with the clamping protrusion.

Preferably, the first component includes a fixing plate fixedly connected with the sand bar and the guide bar, and a nail fixed on the fixing plate, and one end of the nail penetrates the fixing plate and forms a clamping protrusion.

Preferably, the second component includes a first plate and a second plate that are vertically connected by a pin shaft, the first plate is in contact with the outer side surface of the sliding seat in the width direction, and the second plate is connected to the thickness direction of the sliding seat. The sides are attached to butt and fixed by bolts.

Preferably, the main support mechanism further includes a connecting shaft that is detachably connected to the second support plate, and the push rod assembly further includes a push rod that is arranged on the inner circumference of the connecting shaft and slides along the axial direction. The axis lines of the connecting shafts are set to coincide.

Preferably, the honing tool further includes a retracting mechanism for retracting the honing assembly in a radial direction.

Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

The large-aperture honing tool of the present invention has a different structure from the transmission honing tool, and the overall structure is compact and reasonable, light weight, less consumables, and waste.

Description of the drawings

Figure 1 is a schematic diagram of a radial sectional view of the honing tool of the present invention;

Figure 2 is a schematic structural view of an axial cross-sectional view of the honing tool of the present invention;

3 is a schematic diagram of the front view of the second component of the present invention;

FIG. 4 is a schematic top view of the structure of the second component of the present invention;

5 is a schematic side view of the structure of the second component of the present invention;

Among them: 10, mandrel; 11, first supporting plate; 12, second supporting plate; 13, connecting shaft; 21, pusher rod; 211, first pusher part; 212, second pusher part; 22, Push rod; 30, drive ejector rod; 31, sliding seat; 321, sand bar; 322, guide bar; 41, first plate; 410, card hole; 42, second plate; 43, fixed plate; 44, staple ; 50, spring; 51, elastic retraction ring; k1, retraction hole; X, axial direction; Y, radial direction.

Detailed ways

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in Figures 1 to 5, a honing tool for machining large apertures. The honing tool has an axial direction X and a radial direction Y that are perpendicular to each other. The honing tool includes a main support mechanism and a slidable arrangement on the main support mechanism along the radial direction Y. A plurality of groups of grinding components, a push rod 22 component arranged on the inner periphery of the main support mechanism that slides along the axial direction X, the main support mechanism includes a mandrel 10 extending along the axial direction X, and a first support fixedly connected to both ends of the mandrel 10 The plate 11 and the second support plate 12, the grinding assembly includes a plurality of sliding seats 31, multiple groups of sand bars 321 and guide bars 322 distributed in a circumferential direction at intervals, respectively connected to each group of sand bars 321, guide bars 322 (for Aluminum material) and multiple sets of connecting components between each sliding seat 31. Each sliding seat 31 is slidably arranged between the first support plate 11 and the second support plate 12 along the radial direction Y. The push rod 22 assembly includes a push cone The rod 21 and the taper rod 21 are provided on the inner circumference of the mandrel 10 to slide along the axial direction X.

In addition, the main support mechanism also includes a connecting shaft 13 detachably connected to the second support plate 12, and the push rod 22 assembly also includes a push rod 22 provided on the inner circumference of the connecting shaft 13 that slides along the axial direction X. The push rod 22 and the push rod The taper rod 21 is also detachably butt-connected, and the axis lines of the push rod 22, the push taper rod 21, the core shaft 10, and the connecting shaft 13 are arranged to coincide. When the honing tool is used, the rear end of the connecting shaft 13 and the push rod 22 are connected to the main shaft of the honing machine. The connecting shaft 13 and the push rod 22 are both detachable. When processing a deeper hole, the connecting shaft 13 and the connecting shaft of different lengths can be replaced. Putter 22.

In this example, the machining aperture of the honing tool is large, but it is not directly made of thicker metal rods. Instead, the mandrel 10 is matched with the first support plate 11 and the second support plate 12 to realize the alignment of the sliding seat 31. There are four sliding seats 31 distributed in the circumferential direction, the length of the sliding seat 31 is 4 to 5 times its width value, and the area (larger) between the two adjacent sliding seats 31 is a hollow area Therefore, the overall weight of the honing tool is very light. In addition, each sliding seat 31, the first support plate 11, and the second support plate 12 are provided with holes to further reduce the overall weight of the tool.

Further, the grinding assembly further includes a plurality of driving jack rods 30 passing through the mandrel 10 and connected between the taper rod 21 and each sliding seat 31, and one end of the driving jack rod 30 cooperates with the taper rod 21 to slide, The other end is fixedly connected to the sliding seat 31. The taper rod 21 has a first taper portion 211 and a second taper portion 212 sequentially distributed along the axial direction X. One set of the plurality of driving jack rods 30 is located between the first taper portion 211 and each sliding seat 31, Another group is located between the second taper portion 212 and each sliding seat 31. There are four sliding seats 31 distributed along the circumferential direction, so each group of driving jacks 30 has four.

Furthermore, the connecting assembly includes a first assembly and a second assembly connected between the sand bar 321, the guide bar 322 and the sliding seat 31. The first assembly is fixedly connected to the sand bar 321 and the guide bar 322, and the second assembly is connected to the sliding seat 31. The seat 31 is fixedly connected, the first component is formed with a clamping protrusion, and the second component is formed with a clamping hole 410 for mating and clamping with the clamping protrusion. That is, the first component and the second component can be clamped to each other, and the The first component and the second component are clamped to each other to realize that the sand bar 321 and the guide bar 322 can be quickly installed and docked on the sliding seat 31, which reduces the replacement time, greatly improves the replacement efficiency of the sand bar 321 and the guide bar 322, and reduces Cost of production.

Specifically, the first component includes a fixing plate 43 fixedly connected to the sand bar 321 and the guide bar 322, and a clip 44 fixed on the fixing plate 43. One end of the clip 44 penetrates the fixing plate 43 and forms a clamping protrusion. . The second component includes a first plate 41 and a second plate 42 that are vertically connected by a pin. The first plate 41 is in contact with the outer side of the sliding seat 31 in the width direction, and a clamping hole 410 is opened on the first plate 41, The second plate 42 is in contact with one side surface in the thickness direction of the sliding seat 31 and is fixed by bolts.

In this example, the honing tool also includes a retracting mechanism for retracting the honing assembly in the radial direction Y. The retraction mechanism includes a spring 50 sleeved on the outer circumference of the push rod 22 for pushing the push rod 22 backwards, and an elastic retraction ring 51 wound between the sliding seats 31 in the circumferential direction. The length direction of each sliding seat 31 is Both sides are provided with a retraction hole k1, there are two elastic retraction rings 51, one of which passes through the retraction hole k1 on the front side of each sliding seat 31, and thus is wound between the sliding seats 31, the other The root passes through the retraction hole k1 on the rear side of each sliding seat 31, thereby winding between the sliding seats 31; after the push rod 22 and the push rod 21 move backward, the push rod 21 releases the transmission The resisting force of the ejector rod 30 releases the resisting force of the sliding seat 31, so that the elastic retracting ring 51 is opened and contracted, and the sliding seats 31 are gathered in the middle, so that the entire grinding assembly shrinks in the radial direction Y. In this way, when the honing tool is retracted, the sand bar 321 of the grinding assembly can be disengaged from the surface of the hole to be processed, so as to avoid the friction of the sand bar 321 with the inner surface of the hole caused by the inability of the sand bar 321 to shrink and the inner surface of the hole. Quality problems, improve product quality, and avoid product scrapping.

The present invention has been described in detail above, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it, but it cannot limit the scope of protection of the present invention. Whatever is done in accordance with the spirit of the present invention, etc. The effect changes or modifications shall be covered by the protection scope of the present invention.

Claims

A honing tool for machining large apertures. The honing tool has axial and radial directions perpendicular to each other. The honing tool is characterized in that: the honing tool includes a main support mechanism and multiple groups of grinding that are slidably arranged on the main support mechanism along the radial direction. Assembly, a push rod assembly arranged on the inner circumference of the main support mechanism to slide along the axial direction, the main support mechanism comprising a mandrel extending in the axial direction, a first support plate fixedly connected to both ends of the mandrel, and a second Two supporting plates, the grinding assembly includes a plurality of sliding seats, a plurality of groups of sand bars and guide bars, which are sequentially spaced in the circumferential direction, respectively connected to each group of the sand bars, the guide bars and each of the sliding seats Each of the sliding seats is slidably arranged between the first support plate and the second support plate in the radial direction. The push rod assembly includes a push cone rod, and the push cone rod is along an axis. It is slidably arranged on the inner circumference of the mandrel; the grinding assembly further includes a plurality of driving jacks passing through the mandrel and connected between the pusher rod and each of the sliding seats, the One end of the driving jack rod cooperates to slide with the taper rod, and the other end is fixedly connected with the sliding seat; the taper rod has a first taper portion and a second taper portion that are sequentially distributed along the axial direction, Among the plurality of driving jacks, one group is located between the first push cone portion and each of the sliding seats, and another group is located between the second push cone portion and each of the sliding seats; The length of the seat is 4 to 5 times its width; the connecting component includes a first component and a second component connected between the sand bar, the guide bar and the sliding seat, and the first component is connected to the sliding seat. The sand bar and the guide bar are fixedly connected, the second component is fixedly connected to the sliding seat, the first component and the second component can be clamped to each other; a clamping protrusion is formed on the first component, the The second component is formed with a clamping hole that fits and clamps with the clamping protrusion; the first component includes a fixing plate fixedly connected with the sand bar and the guide bar, and a clamping nail fixed on the fixing plate, so One end of the clip penetrates the fixing plate and forms the clamping protrusion; the second component includes a first plate and a second plate that are vertically connected by a pin, and the first plate is connected to the sliding plate. The outer side surface in the width direction of the seat is attached and butted, and the second plate is attached and butted to the one side surface in the thickness direction of the sliding seat and fixed by bolts; the main support mechanism further includes the second support The plate is detachably connected to the connecting shaft, the push rod assembly further includes a push rod arranged on the inner circumference of the connecting shaft that slides along the axial direction, the push rod, the pusher rod, the mandrel, and the axis of the connecting shaft The honing tool also includes a retracting mechanism for retracting the honing assembly in the radial direction.
A honing tool for machining large apertures. The honing tool has axial and radial directions perpendicular to each other. The honing tool is characterized in that: the honing tool includes a main support mechanism and multiple groups of grinding that are slidably arranged on the main support mechanism along the radial direction. Assembly, a push rod assembly arranged on the inner circumference of the main support mechanism to slide along the axial direction, the main support mechanism comprising a mandrel extending in the axial direction, a first support plate fixedly connected to both ends of the mandrel, and a second Two supporting plates, the grinding assembly includes a plurality of sliding seats, a plurality of groups of sand bars and guide bars, which are sequentially spaced in the circumferential direction, respectively connected to each group of the sand bars, the guide bars and each of the sliding seats Each of the sliding seats is slidably arranged between the first support plate and the second support plate in the radial direction. The push rod assembly includes a push cone rod, and the push cone rod is along an axis. It is slidably arranged on the inner circumference of the core shaft.
The machining large-aperture honing tool according to claim 2, characterized in that: the grinding assembly further comprises a plurality of transmissions passing through the mandrel and connected between the pusher rod and each of the sliding seats A mandrel, one end of the transmission mandrel slides in cooperation with the pusher rod, and the other end is fixedly connected with the sliding seat.
The machining large-aperture honing tool according to claim 3, characterized in that: the taper rod has a first taper portion and a second taper portion sequentially distributed along the axial direction, and one of the plurality of drive jacks One group is located between the first taper portion and each of the sliding seats, and another set is located between the second taper portion and each of the sliding seats.
The machining large-aperture honing tool according to claim 2, wherein the length of the sliding seat is 4 to 5 times the width.
The machining large-aperture honing tool according to claim 2, wherein the connecting assembly includes a first assembly and a second assembly connected between the sand bar, the guide bar and the sliding seat, and the first assembly It is fixedly connected to the sand bar and the guide bar, the second component is fixedly connected to the sliding seat, and the first component and the second component can be clamped to each other.
The machining large-aperture honing tool according to claim 6, characterized in that: the first component is formed with a clamping protrusion, and the second component is formed with a card that cooperates with the clamping protrusion. hole.
The machining large-aperture honing tool according to claim 7, wherein the first component includes a fixing plate fixedly connected to the sand bar and the guide bar, and staples fixed on the fixed plate, and the staples One end of the fixing plate penetrates through the fixing plate and forms the clamping protrusion.
The machining large-aperture honing tool according to claim 8, wherein the second assembly includes a first plate and a second plate that are vertically connected by a pin shaft, and the width direction of the first plate and the sliding seat is The outer side surface of the upper part is attached and butted, and the second plate is attached and butted to a side surface in the thickness direction of the sliding seat and fixed by bolts.
The machining large-aperture honing tool according to claim 2, wherein the main support mechanism further includes a connecting shaft detachably connected to the second support plate, and the push rod assembly further includes an axially slidable shaft. The push rod is arranged on the inner circumference of the connecting shaft, and the axis lines of the push rod, the tapered rod, the mandrel, and the connecting shaft are arranged to coincide.
The honing tool for machining large apertures according to claim 2, wherein the honing tool further comprises a retracting mechanism for retracting the honing assembly in a radial direction.