CN110883570A

CN110883570A - Crankshaft hole machining positioning device and machining center

Info

Publication number: CN110883570A
Application number: CN201911228870.3A
Authority: CN
Inventors: 梅勇; 刘磊; 饶旭东; 魏本堂; 俞建明
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-03-17

Abstract

The invention discloses a crankshaft hole processing and positioning device and a processing center, which comprise a bottom plate, and a clamping part and a guide part which are arranged on the bottom plate, wherein the clamping part is used for clamping an engine cylinder body when a crankshaft hole of the engine cylinder body is processed; the guide part comprises a guide seat and a guide sleeve which is rotatably connected to the guide seat, the guide sleeve is provided with a through hole for the wire boring cutter to pass through, and the guide sleeve is fixed with the wire boring cutter when being used for processing a crankshaft hole of the engine cylinder body. Through bent axle spot facing work positioner, can use the line boring cutter to the machining center on to make the machining center can promote the machining efficiency in bent axle hole when keeping high degree of flexibility, the manufacturing cost of line boring cutter is less than the manufacturing cost of conducting bar boring cutter moreover. In addition, the processing quality of the crankshaft hole can be improved by using the wire boring cutter.

Description

Crankshaft hole machining positioning device and machining center

Technical Field

The invention relates to the technical field of automobile machining, in particular to a crankshaft hole machining positioning device and a machining center.

Background

In the process of processing a crankshaft hole of an engine cylinder block, a processing mode that a processing center is matched with a guide bar boring cutter and a processing mode that a special machine for processing the crankshaft hole of the engine cylinder block is matched with a line boring cutter are generally adopted. The machining mode that the machining center is matched with the guide bar boring cutter is used, the flexibility degree is high, but the cost of the machined cutter is high, the machining efficiency is extremely low, and in the mode, the form and position tolerance of a crankshaft hole is relatively poor, so that the production quality of an engine is influenced; the processing method of the special engine cylinder block crankshaft hole processing machine matching line boring cutter can improve the processing quality and the processing efficiency of the engine cylinder block, but the special engine cylinder block crankshaft hole processing machine is poor in universality and cannot be matched with engine cylinder blocks of other models, so that the production cost is increased.

Therefore, it is necessary to provide a crankshaft hole processing and positioning device to solve the above technical problems.

Disclosure of Invention

The invention mainly aims to provide a crankshaft hole machining and positioning device and a machining center applying the same, and aims to solve the problem that the existing machining center is low in crankshaft hole machining efficiency.

In order to achieve the above purpose, the crankshaft hole machining and positioning device provided by the invention comprises a bottom plate, and a clamping portion and a guide portion which are arranged on the bottom plate, wherein the clamping portion is used for clamping an engine cylinder block when a crankshaft hole of the engine cylinder block is machined; the guide part comprises a guide seat and a guide sleeve which is rotatably connected to the guide seat, the guide sleeve is provided with a through hole for a wire boring cutter to pass through, and the guide sleeve is fixed with the wire boring cutter when being used for machining a crankshaft hole of the engine cylinder body.

Preferably, the first clamping assembly and the second clamping assembly each comprise a mounting seat, a clamping block and a mounting block arranged on the mounting seat, the clamping block is rotatably arranged on the mounting seat, and a clamping end of the clamping block can move away from or close to the mounting block so as to release or clamp the engine block.

Preferably, the second clamping assembly further comprises a positioning pin, and the positioning pin is arranged on the mounting seat of the second clamping assembly and arranged side by side with the mounting block of the second clamping assembly.

Preferably, the guide seat is detachably arranged on the bottom plate, and a key groove for fixing with the wire boring cutter is arranged on the guide sleeve.

Preferably, be provided with horizontal regulating block and vertical regulating block on the bottom plate, horizontal line regulating block with vertical regulating block is located on the horizontal and longitudinal direction of guide holder, horizontal regulating block with be provided with first adjustment sheet between the guide holder, vertical regulating block with be provided with the second adjustment sheet between the guide holder, through adjusting first adjustment sheet with the quantity of second adjustment sheet, in order to right the guide holder carries out position control.

Preferably, the crankshaft hole machining positioning device further comprises a supporting assembly, and the supporting assembly is arranged on the bottom plate and is located on the same side of the bottom plate as the first clamping assembly.

Preferably, the supporting assembly comprises a supporting seat, a clamping piece and a supporting piece arranged on the supporting seat, the clamping piece is rotatably arranged on the supporting seat, and the clamping end of the clamping piece can move away from or close to the supporting piece.

Preferably, the supporting seat is further provided with an elastic piece, and the elastic piece is connected with the supporting piece.

Preferably, a positioning piece for installing and positioning the engine cylinder block is further arranged on the bottom plate, and the positioning piece is located between the first clamping assembly and the second clamping assembly.

In addition, the invention also provides a machining center which comprises a machine body, a tray, a line boring cutter and the crankshaft hole machining and positioning device, wherein the crankshaft hole machining and positioning device is arranged on the tray, and the tray and the line boring cutter are both arranged on the machine body.

According to the technical scheme, the first clamping assembly and the second clamping assembly are used for fixedly clamping the engine cylinder body, and the line boring cutter and the guide sleeve are combined for use, so that the line boring cutter can be used for machining a crankshaft hole in a machining center, and the machining mode that the line boring cutter cannot be used for production machining in the machining center is changed. Through bent axle spot facing work positioner, can use the line boring cutter to the machining center on to make the machining center can promote the machining efficiency in bent axle hole when keeping high degree of flexibility, the manufacturing cost of line boring cutter is less than the manufacturing cost of conducting bar boring cutter moreover. In addition, the processing quality of the crankshaft hole can be improved by using the wire boring cutter.

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 structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a crankshaft hole machining positioning device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another perspective view of a crankshaft hole machining positioning device according to an embodiment of the present invention;

fig. 3 is an assembly view of a crankshaft hole machining positioning device according to an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Crankshaft hole machining and positioning device	110	Base plate
111	Transverse adjusting block	112	Longitudinal adjusting block
				120	Clamping part	121	First clamping assembly
122	Second clamping assembly	123	Mounting seat
				124	Clamping block	125	Mounting block
126	Locating pin	130	Guide part
				131	Guide seat	132	Guide sleeve
133	Key groove	134	Through hole
				140	Support assembly	141	Supporting seat
142	Clamping piece	143	Support piece
				150	Locating piece	160	Pressure gauge
200	Tray	300	Wire boring cutter
				400	Engine cylinder block

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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

As shown in fig. 1 to 3, a crankshaft hole machining and positioning device 100 according to an embodiment of the present invention includes a bottom plate 110, and a clamping portion 120 and a guide portion 130 provided on the bottom plate 110, where the clamping portion 120 is used to clamp an engine block 400 when machining a crankshaft hole of the engine block 400, the clamping portion 120 includes a first clamping assembly 121 and a second clamping assembly 122, and the first clamping assembly 121 and the second clamping assembly 122 are respectively provided on opposite sides of the bottom plate 110; the guide portion 130 includes a guide holder 131 and a guide sleeve 132 rotatably coupled to the guide holder 131, the guide sleeve 132 is provided with a through hole 134 through which the wire boring cutter 300 passes, and the guide sleeve 132 is fixed to the wire boring cutter 300 when machining a crank hole of the engine block 400.

The first clamping assembly 121 and the second clamping assembly 122 fixedly clamp the engine cylinder block 400, and the wire boring tool 300 is combined with the guide sleeve 132, so that the wire boring tool 300 can be used for machining a crankshaft hole in a machining center, and the machining mode that the wire boring tool 300 cannot be used for production machining in the machining center is changed. Through the crankshaft hole machining positioning device 100, the line boring cutter 300 can be applied to a machining center, so that the machining center can improve the machining efficiency of a crankshaft hole while maintaining a high degree of flexibility, and the production cost of the line boring cutter 300 is lower than that of a guide bar boring cutter. In addition, the processing quality of the crank hole can be improved by using the wire boring cutter 300.

In the above embodiment, each of the first clamping assembly 121 and the second clamping assembly 122 includes the mounting seat 123, the clamping block 124, and the mounting block 125 disposed on the mounting seat 123, the clamping block 124 is rotatably disposed on the mounting seat 123, and the clamping end of the clamping block 124 can move away from or close to the mounting block 125 to release or clamp the engine block 400. Before the engine block 400 is placed on the crankshaft hole machining positioning device 100, the clamping end of the clamping block 124 is located at a position far away from the mounting block 125, when the engine block 400 is in contact with the mounting block 125, the clamping end of the clamping block 124 is close to the mounting block 125, and the engine block 400 is fixed between the clamping block 124 and the mounting block 125, so that the engine block 400 can be conveniently produced and machined by the line boring cutter 300.

Specifically, as shown in fig. 2, the second clamping assembly 122 further includes a positioning pin 126, and the positioning pin 126 is disposed on the mounting seat 123 of the second clamping assembly 122 and is disposed side by side with the mounting block 125 of the second clamping assembly 122. The engine block 400 can be accurately positioned by the positioning pin 126 to improve the machining accuracy of the crankshaft hole. One of the positioning pins 126 is a round pin, and the other positioning pin 126 is a diamond pin.

In the above embodiment, the guide holder 131 is detachably provided on the base plate 110, and the guide sleeve 132 is provided with the key groove 133 for fixing with the wire boring cutter 300. Accordingly, a corresponding mounting groove is provided on the wire boring cutter 300, and the wire boring cutter 300 is relatively fixed to the guide sleeve 132 by providing a flat key between the mounting groove and the key groove 133.

In the above embodiment, the bottom plate 110 is provided with the transverse adjusting block 111 and the longitudinal adjusting block 112, the transverse adjusting block and the longitudinal adjusting block 112 are located in the transverse and longitudinal directions of the guide seat 131, the first adjusting piece is arranged between the transverse adjusting block 111 and the guide seat 131, and the second adjusting piece is arranged between the longitudinal adjusting block 112 and the guide seat 131. By adjusting the number of the first and second adjusting pieces, the position of the guide holder 131 is finely adjusted in the lateral and longitudinal directions, so that the axis of the guide sleeve 132 can be kept consistent with the axis of the wire boring cutter 300, thereby further improving the processing progress.

As shown in fig. 2, the crankshaft boring positioning device 100 further includes a support assembly 140, and the support assembly 140 is disposed on the bottom plate 110 and is located on the same side of the bottom plate 110 as the first clamping assembly 121. Specifically, the supporting assembly 140 includes a supporting seat 141, a clamping member 142 and a supporting member 143 disposed on the supporting seat 141, the clamping member 142 is rotatably disposed on the supporting seat 141, and a clamping end of the clamping member 142 can move away from or close to the supporting member 143. The engine block 400 is additionally supported by the support assembly 140 to improve the stability of the crankshaft bore during machining. An elastic member (not shown) is further disposed on the supporting base 141, and the elastic member is connected to the supporting member 143 to realize floating support of the engine block 400.

In the above embodiment, the base plate 110 is further provided with a positioning member 150 for installing and positioning the engine block 400, and the positioning member 150 is located between the first clamping assembly 121 and the second clamping assembly 122. When the engine block 400 is conveyed to the crankshaft hole machining positioning device 100 by a crane or the like, it is first positioned and mounted on the positioning member 150 and then brought into contact with the clamp portion 120. By providing the spacer 150, the engine block 400 can be guided and mounted, and the speed of positioning and mounting the positioning pin 126 and the engine block 400 can be increased.

In the above embodiment, the bottom plate 110 is provided with an oil path therein, the bottom plate 110 is further provided with the pressure gauge 160 and the hydraulic valve, and the oil path is communicated with the pressure gauge 160, the clamping portion 120, the support assembly 140, the hydraulic valve and the hydraulic station to form a complete hydraulic working circuit. Through the hydraulic working mode, the reliability of the clamping part 120 and the supporting assembly 140 in the working process can be improved, and the engine cylinder block 400 is prevented from shaking in the processing process. Thereby promoting the machining precision of the crankshaft hole.

In addition, the invention also provides a machining center, which comprises a machine body, a tray 200, a line boring cutter 300 and the crankshaft hole machining and positioning device 100, wherein the crankshaft hole machining and positioning device 100 is arranged on the tray 200, and the tray 200 and the line boring cutter 300 are both arranged on the machine body. Since the machining center adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

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

Claims

1. The crankshaft hole machining and positioning device is arranged on a machining center and is characterized by comprising a bottom plate, a clamping portion and a guide portion, wherein the clamping portion and the guide portion are arranged on the bottom plate, the clamping portion is used for clamping an engine cylinder body when a crankshaft hole of the engine cylinder body is machined, the clamping portion comprises a first clamping assembly and a second clamping assembly, and the first clamping assembly and the second clamping assembly are respectively arranged on two opposite sides of the bottom plate; the guide part comprises a guide seat and a guide sleeve which is rotatably connected to the guide seat, the guide sleeve is provided with a through hole for a wire boring cutter to pass through, and the guide sleeve is fixed with the wire boring cutter when being used for machining a crankshaft hole of the engine cylinder body.

2. The crankshaft boring positioning device of claim 1, wherein the first clamping assembly and the second clamping assembly each include a mounting block, a clamping block, and a mounting block disposed on the mounting block, the clamping block is rotatably disposed on the mounting block, and a clamping end of the clamping block is movable away from or closer to the mounting block to release or clamp the engine block.

3. The crankshaft boring positioning device of claim 2, wherein the second clamping assembly further comprises a locating pin disposed on the mounting seat of the second clamping assembly and juxtaposed with the mounting block of the second clamping assembly.

4. The crankshaft boring positioning apparatus of claim 1, wherein the guide block is detachably disposed on the base plate, and a key groove for fixing with the wire boring tool is disposed on the guide sleeve.

5. The crankshaft boring positioning apparatus as claimed in claim 4, wherein a lateral adjustment block and a longitudinal adjustment block are provided on the base plate, the lateral adjustment block and the longitudinal adjustment block are located in lateral and longitudinal directions of the guide holder, a first adjustment piece is provided between the lateral adjustment block and the guide holder, a second adjustment piece is provided between the longitudinal adjustment block and the guide holder, and the guide holder is adjusted in position by adjusting the number of the first adjustment piece and the second adjustment piece.

6. The crankshaft boring positioning device of any one of claims 1-5, further comprising a support assembly disposed on the base plate on a same side of the base plate as the first clamping assembly.

7. The crankshaft boring positioning device of claim 6, wherein the support assembly includes a support base, a clamping member, and a support member disposed on the support base, the clamping member is rotatably disposed on the support base, and the clamping end of the clamping member is capable of moving away from or closer to the support member.

8. The apparatus as claimed in claim 7, wherein the support base further includes a resilient member, the resilient member being connected to the support member.

9. The crankshaft hole machining positioning device as claimed in any one of claims 1 to 5, wherein a positioning member for mounting and positioning the engine block is further provided on the bottom plate, and the positioning member is located between the first clamping assembly and the second clamping assembly.

10. A machining center, characterized in that the machining center comprises a machine body, a tray on which a crankshaft hole machining positioning device is mounted, a line boring cutter, and the crankshaft hole machining positioning device according to any one of claims 1 to 9, both the tray and the line boring cutter being mounted on the machine body.