CN112296865A

CN112296865A - Honing equipment

Info

Publication number: CN112296865A
Application number: CN202011121433.4A
Authority: CN
Inventors: 梅勇; 李文; 唐磊; 魏本堂; 朱奇林
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-02-02

Abstract

The invention discloses honing equipment, wherein the honing equipment comprises a mounting seat, a honing shaft sleeve, an adjusting shaft sleeve, a movable guide bar and a mandrel; the honing shaft sleeve is rotationally arranged on the mounting seat along the axial direction of the front and back directions; the honing shaft sleeve is arranged at the front end of the honing shaft sleeve and extends along the axial direction, a channel extending along the axial direction is formed in the honing shaft sleeve, and an installation groove communicated with the channel is formed in the side wall of the honing shaft sleeve; the movable guide bar is movably arranged in the mounting groove in the radial direction of the adjusting shaft sleeve; the mandrel is arranged in the channel and is provided with an expansion section, the outer side wall of the expansion section inclines towards the central axis of the channel from front to back, the mandrel can be arranged in a reciprocating manner along the axial direction, and when the mandrel moves from front to back, the outer side wall of the expansion section is in butt fit with the inner side wall of the movable guide bar so that the movable guide bar moves from inside to outside along the radial direction. The invention aims to improve the qualification rate of the processing product of the honing equipment.

Description

Honing equipment

Technical Field

The invention relates to the technical field of automobile manufacturing, in particular to honing equipment.

Background

Along with the requirement of automobile energy emission is higher and higher, the requirement of an automobile engine on the roughness and the cylindricity of a crankshaft hole and a camshaft hole is greatly improved based on the requirement of reducing a shafting friction pair. In this case, a reaming and honing process has to be applied to the machining of the discontinuous shaft holes such as the crank shaft hole, the camshaft hole and the like.

At present, honing equipment for crankshaft holes/camshaft holes at home and abroad adopts a scheme of front and rear guiding sizing for honing, because the condition that allowance is reserved before honing and allowance fluctuates during honing needs to be ensured to normally work, guide bars fixed at the front end of a honing head adopt a larger gap design, although the front end of the honing head can be ensured to be inserted into the crankshaft holes/camshaft holes, the positioning precision of the guide bars fixed at the front end is lower due to the larger gap between the guide bars fixed at the front end and the hole wall, and further the position size and the cylindrical degree data of a processing hole during honing are larger in fluctuation, and further the product quality is influenced.

Disclosure of Invention

The invention mainly aims to provide honing equipment and aims to improve the qualification rate of processed products of the honing equipment.

In order to achieve the above object, the present invention provides a honing apparatus including a honing head, the honing apparatus including:

a mounting seat;

the honing shaft sleeve is rotatably arranged on the mounting seat along the axial direction of the front and back direction;

the honing tool comprises a honing shaft sleeve, an adjusting shaft sleeve and a honing tool, wherein the honing shaft sleeve is arranged at the front end of the honing shaft sleeve and extends along the axial direction, a channel extending along the axial direction is formed in the adjusting shaft sleeve, and a mounting groove communicated with the channel is formed in the side wall of the adjusting shaft sleeve;

the movable guide bar is movably arranged in the mounting groove in the radial direction of the adjusting shaft sleeve; and the number of the first and second groups,

the mandrel is arranged in the channel and provided with an expansion section, the outer side wall of the expansion section gradually inclines towards the central axis of the channel from front to back, the mandrel can be arranged along the axial direction in a reciprocating manner, and when the mandrel moves from front to back, the outer side wall of the expansion section is in butt fit with the inner side wall of the movable guide strip so that the movable guide strip moves from inside to outside along the radial direction.

Optionally, the inner side surface of the movable guide bar is gradually inclined from front to back towards the central axis of the channel.

Optionally, the honing head further comprises an elastic ring, and the elastic ring is sleeved outside the movable guide bar.

Optionally, two elastic rings are arranged on the movable guide bar, and the two elastic rings are respectively arranged at two ends of the movable guide bar.

Optionally, the mounting groove is equipped with a plurality ofly, and is a plurality of the mounting groove is followed the circumference interval of adjusting the axle sleeve sets up, the activity conducting bar is equipped with a plurality ofly, and is a plurality of the activity conducting bar is correspondingly installed a plurality ofly in the mounting groove.

Optionally, the movable conducting bars are provided with a plurality of movable conducting bars along the axial direction, and the expansion section is provided with a plurality of movable conducting bars corresponding to the plurality of movable conducting bars respectively.

Optionally, an end cover is arranged at the front end of the adjusting shaft sleeve, and a piston cavity is formed between the end cover and the mandrel at an interval;

the honing head further comprises:

the piston piece is arranged in the piston cavity, is connected with the mandrel and can be arranged in a reciprocating manner along the axial direction so as to enable the mandrel to move from front to back; and the number of the first and second groups,

and the elastic piece is arranged between the rear end of the channel and the mandrel and used for enabling the mandrel to move forwards from the back.

Optionally, the piston member and the end cap are spaced to form a compression chamber;

and a flow passage communicated with the compression chamber is formed in the end cover, an opening is formed on the end cover by the flow passage, and a joint is arranged at the opening.

Optionally, the honing apparatus further comprises a fluid supply device having an output gun extending in an axial direction of the front-rear direction and disposed opposite to the joint, the output gun being movably disposed in the front-rear direction to communicate with the joint.

Optionally, an energy storage chamber communicated with the flow passage is further formed in the end cover, and an energy accumulator is installed in the energy storage chamber.

According to the technical scheme, the adjusting shaft sleeve is arranged at the front end of the honing shaft sleeve, the movable guide strip capable of moving along the radial direction is arranged on the adjusting shaft sleeve, when a hole to be machined is to be honed, the honing head is inserted into the hole to be machined, the core shaft is driven to move from front to back, and the movable guide strip is enabled to expand out radially, so that a gap between the front end of the honing head and the wall of the hole is filled, the guiding precision of the honing head is improved, the position size of the machined hole and the fluctuation of cylindricity data are reduced, and the honing quality and the qualification rate of products are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the components shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a honing apparatus provided by the present invention;

fig. 2 is a schematic structural view of a honing head of the honing device of fig. 1;

fig. 3 is a schematic view of a partial structure of the honing head of fig. 2;

FIG. 4 is an enlarged detail view of A in FIG. 3;

figure 5 is a schematic structural view of the honing housing of figure 2.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of this, the present invention provides a honing apparatus 100, and fig. 1 to 5 are specific embodiments of the honing apparatus 100. The honing apparatus 100 will be mainly described below with reference to the specific drawings.

Referring to fig. 2, the honing equipment 100 includes a mounting base 11, a honing sleeve 12, an adjusting sleeve 13, a movable guide 14 and a mandrel 131; the honing shaft sleeve 12 is rotatably arranged on the mounting seat 11 along the axial direction of the front and back direction; the adjusting shaft sleeve 13 is arranged at the front end of the honing shaft sleeve 12 and extends along the axial direction, a channel extending along the axial direction is formed in the adjusting shaft sleeve 13, and an installation groove communicated with the channel is formed in the side wall of the adjusting shaft sleeve 13; the movable guide bar 14 is movably arranged in the mounting groove in the radial direction of the adjusting shaft sleeve 13; the mandrel 131 is arranged in the channel, the mandrel 131 is provided with an expanding section 1310, the outer side wall of the expanding section 1310 is gradually inclined towards the central axis of the channel from front to back, the mandrel 131 can be arranged in a reciprocating mode along the axial direction, and when the mandrel 131 moves from front to back, the outer side wall of the expanding section 1310 is in abutting fit with the inner side wall of the movable conducting bar 14, so that the movable conducting bar 14 moves from inside to outside along the radial direction.

In the technical scheme of the invention, an adjusting shaft sleeve 13 is arranged at the front end of a honing shaft sleeve 12, and a movable guide bar 14 which can move along the radial direction is arranged on the adjusting shaft sleeve 13, when a hole to be machined is to be honed, a honing head 10 is inserted into the hole to be machined, and a mandrel 131 is driven to move from front to back, so that the movable guide bar 14 radially rises, a gap between the front end of the honing head 10 and the wall of the hole is filled, the guiding precision of the honing head 10 is improved, the position size of the machining hole and the fluctuation of cylindricity data are reduced, and the honing quality and the qualification rate of products are further improved.

It should be noted that, considering that the honing sleeve 12, the adjusting sleeve 13 and the output gun 41 all extend in the same axial direction, for the convenience of description, the axial direction herein represents the extending direction of the honing sleeve 12, i.e., the front-rear direction. In addition, the honing sleeve 12 and the adjusting sleeve 13 are cylindrical as a whole, and therefore, the radial direction of the honing sleeve 12 refers to the diameter direction of the cross section thereof, and similarly, the radial direction of the adjusting sleeve 13 refers to the diameter direction of the cross section of the adjusting sleeve 13.

The mounting seat 11 is used for mounting the honing head 10, and the specific structure and implementation form of the mounting seat are not limited in the present invention, and may be an output end of a motor, a honing slide table 20, and the like.

The rear end of the honing shaft sleeve 12 is rotatably arranged on the mounting seat 11, the front end of the honing shaft sleeve is connected with the adjusting shaft sleeve 13, and when the honing shaft sleeve 12 rotates, the adjusting shaft sleeve 13 is driven to synchronously rotate. The rear end of the honing sleeve 12 is sleeved with a rear end fixing guide bar 121, and the rear end fixing guide bar 121 is matched with the hole wall of the hole to be processed to realize the guiding and positioning of the rear end of the honing head 10. The honing shaft sleeve 12 is used for honing a hole to be machined, specifically, as shown in fig. 2 and 5, a slideway is formed in the honing shaft sleeve 12, a push rod 122 and a honing shaft 123 are arranged in the slideway, and the honing shaft 123 can move axially under the action of the push rod 122; an accommodating groove is formed in the side wall of the honing shaft sleeve 12, the bottom of the accommodating groove penetrates through the side wall and is communicated with a slideway, an abrasive bar seat 124 is movably mounted in the accommodating groove along the radial direction of the honing shaft sleeve 12, and the outer side of the abrasive bar seat 124 is an arc surface and is used for honing the hole wall of a hole to be machined; the honing shaft 123 has a guide section whose outer side wall is gradually inclined from the rear to the front toward the central axis of the slide, and the emery stick holder 124 is radially expanded when the honing shaft 123 moves from the rear to the front, and the emery stick holder 124 is radially contracted when the honing shaft 123 moves from the front to the rear.

The adjusting bush 13 is provided at the front end of the honing bush 12 and extends in the same direction as the honing bush 12. Referring to fig. 2 and 3, a passage extending in the front-rear direction is formed in the adjustment sleeve 13, an installation groove is formed in the side wall of the adjustment sleeve 13, and the bottom of the installation groove penetrates through the side wall and is communicated with the passage. The core shaft 131 is disposed in the channel and has an expanding section 1310 opposite to the movable bar 14 installed in the installation groove, and the outer side wall of the expanding section 1310 is inclined such that, when the core shaft 131 moves from front to back, the inner side wall of the movable bar 14 slides along the outer side wall of the expanding section 1310, thereby moving the movable bar 14 from inside to outside in the radial direction, and increasing the diameter of the adjustment sleeve 13. Wherein, for the shape of adaptation treating the processing hole, the lateral wall of activity conducting bar 14 is the arc surface setting to when activity conducting bar 14 along radially moving to with the pore wall butt from inside to outside, the lateral wall of activity conducting bar 14 can laminate with the pore wall, and then promotes the effect of guiding orientation.

Referring to fig. 3, the inner side surface of the movable conducting bar 14 is inclined from front to back gradually toward the central axis of the channel, so that the inner side surface of the movable conducting bar 14 is better matched with the outer side wall of the expanding section 1310, and the movable conducting bar 14 is more stable when expanding.

In order to prevent the movable guide bar 14 from falling off, the honing head 10 further includes an elastic ring 15, the elastic ring 15 is sleeved outside the movable guide bar 14, so as to fix the movable guide bar 14 on the adjustment shaft sleeve 13, and meanwhile, since the elastic ring 15 is made of an elastic material capable of deforming, when the mandrel 131 moves from front to back, the movable guide bar 14 still can be expanded outwards under the pushing action of the mandrel 131, and the expansion stroke cannot be limited by the elastic ring 15. The elastic ring 15 may be a ring made of any elastic material, such as a rubber ring, a spring, etc. In addition, grooves for accommodating the elastic ring 15 may be formed on the outer side walls of the movable guide bar 14 and the adjusting shaft sleeve 13, so that on one hand, the elastic ring 15 may be prevented from falling off or moving, and on the other hand, the elastic ring 15 may be prevented from protruding out of the outer side wall of the movable guide bar 14, thereby affecting the guiding and positioning of the honing head 10.

In order to improve the fixing effect, the two elastic rings 15 are further provided, and the two elastic rings 15 are respectively arranged at two ends of the movable guide bar 14, so that the movable guide bar 14 is stably installed on the adjusting shaft sleeve 13.

Further, one or more movable guide bars 14 may be provided according to the depth and structure of the hole to be processed. In an embodiment of the present invention, a plurality of mounting grooves are formed, the plurality of mounting grooves are spaced along a circumferential direction of the adjustment sleeve 13, a plurality of movable guides 14 are formed, and the plurality of movable guides 14 are correspondingly mounted in the plurality of mounting grooves, so that the honing head 10 can be positioned better by the cooperation of the outer sidewalls of the plurality of movable guides 14 with the hole wall from a plurality of directions; in another embodiment of the present invention, a plurality of movable bars 14 are provided, the plurality of movable bars 14 are axially disposed, and the expansion section 1310 is provided in plurality to respectively correspond to the plurality of movable bars 14, so that the axial length of the whole movable bars 14 is effectively extended, and accordingly, the front end of the honing head 10 has a longer guiding and positioning length, and is better in positioning effect when used for a hole to be processed with a larger hole depth, wherein the plurality of movable bars 14 may be axially disposed at intervals or may be continuously disposed.

It should be understood that the two arrangement manners of the plurality of movable guide bars 14 do not interfere with each other, and may be alternatively arranged or simultaneously used according to actual requirements, as shown in fig. 2, in this embodiment, two groups of movable guide bars 14 are provided, two groups of movable guide bars 14 are continuously arranged along the axial direction, each group of movable guide bars 14 includes three movable guide bars 14 (two of the movable guide bars 14 are not shown), and the three movable guide bars 14 are arranged at equal intervals along the circumferential direction.

In addition, the front end of the adjusting sleeve 13 may be sleeved with a front end fixing guide 16 to guide the honing head 10 in the front end.

Referring to fig. 4, the front end of the adjusting sleeve 13 is provided with an end cap 19, and a piston cavity 101 is formed between the end cap 19 and the mandrel 131 at an interval. In this embodiment, the honing head 10 further includes a piston member 17 and an elastic member 18, wherein: the piston member 17 is arranged in the piston cavity 101, and the piston member 17 is connected with the mandrel 131 and can be arranged in a reciprocating manner along the axial direction so as to enable the mandrel 131 to move from front to back; the elastic member 18 is disposed between the rear end of the passage and the spindle 131 to move the spindle 131 from the rear to the front. When the piston member 17 moves backward under the action of external force, the core shaft 131 is pushed to move backward, and the movable conducting bar 14 is pushed to expand, and meanwhile, the elastic member 18 compresses and stores force; when the external force disappears, the elastic force of the elastic element 18 drives the mandrel 131 to move forward and return, the movable guide bar 14 retracts radially, and simultaneously, the piston element 17 returns.

Further, the piston member 17 is spaced from the end cap 19 to form a compression chamber 102. A flow passage 103 communicated with the compression chamber 102 is formed in the end cover 19, an opening is formed on the end cover 19 by the flow passage 103, a joint 191 is arranged at the opening, and fluid enters the compression chamber 102 from the joint 191 to generate pressure on the piston rod, so that the piston rod is pushed to move backwards. The fluid may be compressed air or hydraulic oil.

Referring to fig. 1, the honing apparatus 100 further includes a fluid supply device 40, and the fluid supply device 40 may be a compressed gas supply apparatus or an oil supply apparatus. The fluid supply device 40 includes an output gun 41, the output gun 41 extends in the axial direction of the front-rear direction and is disposed opposite to the joint 191, and the output gun 41 is movably disposed in the front-rear direction to communicate with the joint 191, thereby supplying the fluid into the compression chamber 102.

When the fluid is hydraulic oil, an energy storage chamber communicated with the flow passage 103 is further formed in the end cover 19, an energy storage 192 is installed in the energy storage chamber, when the compression chamber 102 is filled with the oil, the energy storage 192 stores energy, and when the oil supply is stopped, the energy storage 192 releases the oil pressure, so that the piston member 17 is pushed. One or more accumulators 192 may be provided, and may be specifically designed according to actual needs.

The operation will be described by taking the embodiment shown in fig. 1 as an example. The honing apparatus 100 includes a honing head 10 and an oil supply apparatus which are oppositely and spaced apart, and a clamp structure 30 provided between the honing head 10 and the oil supply apparatus, the clamp structure 30 being used for clamping a workpiece to be machined having a hole to be machined, the clamp structure 30 having a support ring 31 for supporting the honing head 10. At the time of stopping the machine, the front end of the honing head 10 is inserted into the support ring 31 to prevent the honing head 10 from being suspended for a long time to be deformed. When the honing tool works, the honing head 10 moves forwards to be inserted into a hole to be machined, then the output gun 41 arranged for supplying oil moves backwards until the output gun is in butt joint with the joint 191, the oil supply equipment supplies oil to the compression cavity, the energy accumulator 192 stores energy and releases oil pressure, so that the piston piece 17 moves backwards, the mandrel 131 is pushed to move backwards, the movable guide bar 14 radially expands, the gap between the movable guide bar 14 and the wall of the hole to be machined is eliminated, and the guiding precision of the honing head 10 is improved. After the honing head 10 is adapted, the output gun 41 is moved forward to be separated from the joint 191, and then the honing head 10 starts to ream and hone the hole to be processed. After the honing stroke is completed, the output gun 41 is moved to be connected to the joint 191 again, the oil pressure is released, the movable guide bar 14 is retracted, and finally, the honing head 10 and the output gun 41 are reset to finish the honing.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent component changes, which are made by using the contents of the present specification and the drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A honing apparatus comprising a honing head, wherein the honing head comprises:

a mounting seat;

2. The honing apparatus as claimed in claim 1, wherein the inner side surface of the movable bar is disposed to be inclined gradually toward the central axis of the passage from the front to the rear.

3. The honing apparatus of claim 1 wherein the honing head further comprises a resilient ring, the resilient ring being sleeved over the movable guide.

4. A honing installation as claimed in claim 3, wherein there are two of said resilient rings, two of said resilient rings being provided at each end of said movable guide.

5. The honing apparatus as claimed in claim 1, wherein there are plural mounting grooves provided at intervals along the circumferential direction of the adjusting sleeve, and plural movable guides provided in correspondence with the plural mounting grooves.

6. The honing apparatus as claimed in claim 1, wherein there are provided a plurality of the movable bars, a plurality of the movable bars being provided in the axial direction, and a plurality of the expanding sections being provided so as to correspond to the plurality of the movable bars, respectively.

7. A honing installation as claimed in claim 1, wherein the front end of the adjustment sleeve is provided with an end cap, the end cap and the spindle being spaced to form a piston chamber;

the honing head further comprises:

8. A honing apparatus as claimed in claim 7, wherein the piston member is spaced from the end cap to define a compression chamber;

9. A honing installation as claimed in claim 8, further comprising a fluid supply device having an output gun extending axially in the fore-and-aft direction and disposed opposite the adapter, the output gun being movably disposed in the fore-and-aft direction to communicate with the adapter.

10. A honing installation as claimed in claim 8, wherein an accumulator chamber is also formed in said end cap in communication with said flow passage, an accumulator being mounted in said accumulator chamber.