CN112692311A

CN112692311A - Automatic clamp for finish machining of cylinder sleeve

Info

Publication number: CN112692311A
Application number: CN202011426785.0A
Authority: CN
Inventors: 钱晔; 孙加俊; 孙刚
Original assignee: Jiangsu Aikesaile Metal Technology Co ltd
Current assignee: Jiangsu Aikesaile Metal Technology Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-04-23

Abstract

The invention provides an automatic fixture for finish machining of a cylinder sleeve, and relates to the technical field of finish machining of cylinder sleeves. The automatic fixture for finish machining of the cylinder sleeve comprises an installation flange fixed at one end of a machine tool main shaft, wherein one end, far away from the machine tool main shaft, of the installation flange is fixedly connected with a fixture main body, the center, far away from the end of the installation flange, of the fixture main body is fixedly connected with a fixed taper sleeve, and the outer side of the fixed taper sleeve is sleeved with the cylinder sleeve to be machined; the fixture comprises a fixture body, wherein the fixture body is far away from a limit support fixedly connected with the peripheral side of one end of a mounting flange plate, and a first clamping mechanism and a second clamping mechanism which correspond to cylinder sleeves to be processed are respectively installed at the top and the bottom of the fixture body. Through designing simple quick positioning mechanism, clamping mechanism and stop gear, can carry out quick self-holding with treating the cylinder jacket of processing and fix, both guaranteed the tight quality of clamp, also improved simultaneously and pressed from both sides tight efficiency greatly, be worth wideling popularize.

Description

Automatic clamp for finish machining of cylinder sleeve

Technical Field

The invention relates to the technical field of finish machining of cylinder sleeves, in particular to an automatic clamp for finish machining of cylinder sleeves.

Background

The cylinder sleeve is a cylindrical part and is arranged in a cylinder body hole of the machine body, and the cylinder sleeve is tightly pressed and fixed by a cylinder cover; the piston reciprocates in its inner hole, and its outer is cooled by cooling water, and forms a cylinder working space together with cylinder cover and piston. The inner surface of the cylinder sleeve is directly acted by high-temperature and high-pressure fuel gas and always generates high-speed sliding friction with the piston ring and the piston skirt. The surface of the steel pipe is contacted with cooling water, and severe thermal stress is generated under a large temperature difference and is corroded by the cooling water; the side thrust of the piston against the cylinder liner not only exacerbates its internal surface friction, but also causes it to bend. The piston also impacts the cylinder liner as the side thrust changes direction. In addition, the device is also subjected to larger installation pretightening force; the gas pressure generates tangential tensile stress and radial compressive stress on the cylinder wall, and the stress is maximum on the inner surface and is high-frequency pulse stress; the temperature difference between the inside and the outside of the cylinder wall generates great thermal stress, and the inner surface generates compressive stress at normal temperature and the cooling surface has tensile stress; however, at extremely high air temperature, the metal near the inner surface is in creep plastic deformation, and after cooling, residual tensile stress is formed on the inner surface, and the low-frequency stress caused by the change along with starting and stopping causes material fatigue.

The cylinder jacket is an important component in an engine body, the engine is used for a long time, because the cylinder jacket rubs with the piston at a high speed for a long time, the inner wall wearing and tearing of the cylinder jacket can be more serious after being used for a long time, consequently, need carry out finish turning to the inner wall of cylinder jacket, the piston of renewal again, thereby guarantee the operation that the engine can be normal, the cylinder jacket is added man-hour with the lathe, need press from both sides tight fixed to it, but present current anchor clamps structural design is too simple at present, and still need calibrate repeatedly when the operation, both waste time and energy, also can't guarantee higher machining precision simultaneously, for this reason, we have developed a new automatic anchor clamps of cylinder jacket finish machining.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an automatic fixture for finish machining of a cylinder sleeve, which solves the problems that the existing fixture is too simple in structural design, needs to be repeatedly calibrated during operation, is time-consuming and labor-consuming, and cannot guarantee high machining precision.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: an automatic fixture for finish machining of a cylinder sleeve comprises a mounting flange fixed at one end of a machine tool main shaft, wherein one end, far away from the machine tool main shaft, of the mounting flange is fixedly connected with a fixture main body, the center, far away from the mounting flange, of the fixture main body is fixedly connected with a fixed taper sleeve, and the outer side of the fixed taper sleeve is sleeved with the cylinder sleeve to be machined;

the side of the clamp body, which is far away from one end of the mounting flange plate, is fixedly connected with a limiting bracket, and the top and the bottom of the clamp body are respectively provided with a first clamping mechanism and a second clamping mechanism corresponding to a cylinder sleeve to be processed;

the top and the bottom of the limiting support are fixedly connected with limiting mechanisms corresponding to the first clamping mechanism and the second clamping mechanism, and mounting grooves corresponding to the first clamping mechanism and the second clamping mechanism are formed in the centers of the top and the bottom of the clamp main body.

Preferably, the mounting flange and the clamp body are cast in an integrally formed structure.

Preferably, the mounting flange plate is fixedly connected with the machine tool spindle through a plurality of fixing bolts, and a plurality of threaded holes corresponding to the machine tool spindle are formed in the peripheral side of the mounting flange plate.

Preferably, the fixed taper sleeve is arranged in a round platform-shaped structure, and one end, away from the clamp body, of the fixed taper sleeve is in a round angle structure.

Preferably, the first clamping mechanism comprises a clamping cylinder, the clamping cylinder is installed at the center of the top of the clamp main body, a piston rod is arranged at one end of the clamping cylinder, a fixed clamping plate is arranged at the bottom, far away from one end of the clamping cylinder, of the piston rod, a rotating support corresponding to the piston rod is fixedly connected to the center of the top of the fixed clamping plate, and a cylinder sleeve non-slip mat is fixedly connected to the bottom of the fixed clamping plate.

Preferably, the first clamping mechanism and the second clamping mechanism are distributed in a symmetrical structure, and the first clamping mechanism and the second clamping mechanism are both arranged in an inclined structure.

Preferably, the piston rod is arranged in an L-shaped structure.

Preferably, the fixed splint are arranged in an arc-shaped bent plate structure, and the cylinder sleeve anti-slip pad is made of rubber.

Preferably, the limiting mechanism comprises a first limiting plate and a second limiting plate, the top and the bottom of the limiting support are respectively and fixedly connected with the first limiting plate and the second limiting plate, and the centers of the first limiting plate and the second limiting plate are respectively and fixedly connected with a first limiting shaft sleeve and a second limiting shaft sleeve.

Preferably, two the piston rod is kept away from the one end of anchor clamps main part and is equallyd divide and run through first spacing axle sleeve and the spacing axle sleeve of second to extend to the outside of first limiting plate and second limiting plate.

(III) advantageous effects

The invention provides an automatic fixture for finish machining of a cylinder sleeve. The method has the following beneficial effects:

1. this kind of automatic anchor clamps of cylinder jacket finish machining through the simple automatic fixture of design, after operating personnel overlaps the cylinder jacket in the outside of fixed taper sleeve, can press from both sides tightly fixedly convenient and fast to the cylinder jacket through first clamping mechanism and second clamping mechanism is automatic.

2. This kind of automatic anchor clamps of cylinder jacket finish machining through the simple quick positioning mechanism, clamping mechanism and the stop gear of design, can carry out quick self-holding with the cylinder jacket of treating processing and fix, has both guaranteed the tight quality of clamp, has also improved simultaneously and has pressed from both sides tight efficiency greatly, is worth wideling popularize.

Drawings

FIG. 1 is a schematic structural view of an operating state of an automatic fixture for finish machining of a cylinder liner according to the present invention;

FIG. 2 is a front view structural diagram of an automatic fixture for finish machining of a cylinder liner according to the present invention;

FIG. 3 is a side view structural diagram of an automatic fixture for cylinder liner finishing according to the present invention;

FIG. 4 is a top view structural diagram of an automatic fixture body for cylinder liner finishing according to the present invention;

FIG. 5 is a schematic structural view of a first clamping mechanism of the automatic fixture for finish machining of a cylinder liner of the present invention;

fig. 6 is a side view structural diagram of a fixing clamp plate of an automatic fixture for cylinder liner finish machining according to the present invention.

Wherein, 1, installing a flange plate; 2. a clamp body; 3. fixing a taper sleeve; 4. a cylinder sleeve is to be processed; 5. a limiting bracket; 6. a first clamping mechanism; 601. a clamping cylinder; 602. a piston rod; 603. rotating the bracket; 604. fixing the clamping plate; 605. a cylinder sleeve anti-skid pad; 7. a second clamping mechanism; 8. a limiting mechanism; 801. a first limit plate; 802. a second limiting plate; 803. a first limit shaft sleeve; 804. a second limit shaft sleeve; 9. installing a groove; 10. a threaded hole; 11. a machine tool spindle.

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.

Example (b):

as shown in fig. 1-6, an embodiment of the present invention provides an automatic fixture for finish machining of a cylinder liner, including a mounting flange 1 fixed at one end of a machine tool spindle 11, wherein one end of the mounting flange 1, which is far away from the machine tool spindle 11, is fixedly connected with a fixture main body 2, a fixed taper sleeve 3 is fixedly connected to a center of one end of the fixture main body 2, which is far away from the mounting flange 1, and a cylinder liner 4 to be machined is sleeved on an outer side of the fixed taper sleeve 3;

the periphery of one end of the clamp main body 2, which is far away from the mounting flange plate 1, is fixedly connected with a limiting bracket 5, and the top and the bottom of the clamp main body 2 are respectively provided with a first clamping mechanism 6 and a second clamping mechanism 7 which correspond to the cylinder sleeve 4 to be processed;

the top and the bottom of the limiting support 5 are fixedly connected with limiting mechanisms 8 corresponding to the first clamping mechanism 6 and the second clamping mechanism 7, and mounting grooves 9 corresponding to the first clamping mechanism 6 and the second clamping mechanism 7 are formed in the centers of the top and the bottom of the clamp main body 2.

The mounting flange plate 1 and the clamp main body 2 are cast into an integrated structure, and the mounting flange plate 1 and the clamp main body 2 which are cast into the integrated structure are firm in structure, cannot be easily damaged and can ensure the machining precision.

The mounting flange 1 and the machine tool spindle 11 are fixedly connected through a plurality of fixing bolts, and a plurality of threaded holes 10 corresponding to the machine tool spindle 11 are formed in the peripheral side of the mounting flange 1.

Fixed taper sleeve 3 is round platform column structure setting, and the one end that anchor clamps main part 2 was kept away from to fixed taper sleeve 3 is the fillet structure, and fixed taper sleeve 3 that is round platform column structure setting can fix a position the cylinder jacket of different diameters size, and one end is that fillet structure's fixed taper sleeve 3 more conveniently waits to process cylinder jacket 4 and inserts fast.

First clamping mechanism 6 includes die clamping cylinder 601, die clamping cylinder 601 is installed at the center at anchor clamps main part 2 top, die clamping cylinder 601's one end is provided with piston rod 602, the bottom that die clamping cylinder 601 one end was kept away from to piston rod 602 is provided with solid fixed splint 604, the center fixedly connected with at solid fixed splint 604 top and the corresponding runing rest 603 of piston rod 602, gu fixed splint 604's bottom fixedly connected with cylinder liner slipmat 605, first clamping mechanism 6 can drive piston rod 602 to shrink through die clamping cylinder 601, thereby utilize piston rod 602 to drive solid fixed splint 604 and remove to the direction of anchor clamps main part 2, thereby make solid fixed splint 604 clamp fixedly fast to cup joint the cylinder jacket 4 of treating processing in the solid fixed taper sleeve 3 outside at the in-process that the shrink removed, thereby realized the function of quick automatic centre gripping.

First clamping mechanism 6 and second clamping mechanism 7 are symmetrical structure distribution, and first clamping mechanism 6 and second clamping mechanism 7 all are the slope structure setting, and first clamping mechanism 6 and second clamping mechanism 7 that are symmetrical structure distribution can contract simultaneously from top and bottom respectively to it presss from both sides tightly to treat processing cylinder jacket 4 from top and bottom simultaneously to utilize two fixed splint 604 to carry out the synchronization from top simultaneously, thereby has guaranteed centre gripping precision and centre gripping efficiency.

The piston rod 602 is an L-shaped structure, and the piston rod 602, which is an L-shaped structure, can drive the fixed clamp plate 604 to move in an inclined direction in a retracting and extending process, so that the fixed clamp plate can clamp the cylinder sleeves 4 to be processed, which have different diameters.

Fixed splint 604 are the setting of arc bent plate structure, and cylinder liner slipmat 605 is made by rubber material, and the fixed splint 604 that is the setting of arc bent plate structure can laminate the tubular structure more and treat processing cylinder jacket 4 to can realize pressing from both sides tight fixedly fast it, also can adapt to not equidimension simultaneously and treat processing cylinder jacket 4, and the cylinder liner slipmat 605 that fixed splint 604 inboard was made by rubber material can play better fastening and antiskid at the in-process of centre gripping.

The limiting mechanism 8 comprises a first limiting plate 801 and a second limiting plate 802, the top and the bottom of the limiting support 5 are respectively fixedly connected with the first limiting plate 801 and the second limiting plate 802, the centers of the first limiting plate 801 and the second limiting plate 802 are respectively fixedly connected with a first limiting shaft sleeve 803 and a second limiting shaft sleeve 804, the first limiting plate 801 and the second limiting plate 802, the first limiting shaft sleeve 803 and the second limiting shaft sleeve 804 can limit the first clamping mechanism 6 and the second clamping mechanism 7, and therefore clamping accuracy is guaranteed.

One ends, far away from the clamp body 2, of the two piston rods 602 respectively penetrate through the first limiting shaft sleeve 803 and the second limiting shaft sleeve 804 and extend to the outer sides of the first limiting plate 801 and the second limiting plate 802, one ends, far away from the clamp body 2, of the two piston rods 602 respectively penetrate through the first limiting shaft sleeve 803 and the second limiting shaft sleeve 804, and therefore the first limiting shaft sleeve 803 and the second limiting shaft sleeve 804 can be utilized to limit the movement of the two piston rods 602.

The working principle is as follows: when the automatic fixture for finish machining of the cylinder liner is used, an operator only needs to sleeve the cylinder liner 4 to be machined on the outer side of the fixed taper sleeve 3, then holds the cylinder liner 4 to be machined by hands, and simultaneously controls the first clamping mechanism 6 and the second clamping mechanism 7 to clamp the cylinder liner 4 to be machined, the fixed taper sleeve 3 which is arranged in a circular truncated cone structure can position the cylinder liners with different diameters, the fixed taper sleeve 3 with one end of a round angle structure is more convenient for the cylinder liner 4 to be machined to be rapidly inserted, the first clamping mechanism 6 can drive the piston rod 602 to shrink through the clamping cylinder 601, so that the piston rod 602 drives the fixed clamp plate 604 to move towards the direction of the fixture main body 2, the fixed clamp plate 604 can rapidly clamp and fix the cylinder liner 4 to be machined which is sleeved on the outer side of the fixed taper sleeve 3 in the process of shrinking and moving, and the function of rapid automatic clamping is, first clamping mechanism 6 and second clamping mechanism 7 that are symmetrical structure distribution can contract simultaneously from top and bottom respectively, thereby utilize two solid fixed splint 604 to treat from top and bottom simultaneously and process cylinder jacket 4 and press from both sides tightly in step, thereby clamping accuracy and centre gripping efficiency have been guaranteed, the solid fixed splint 604 that is the setting of arc bent plate structure can laminate tubular structure more and treat processing cylinder jacket 4, thereby can realize pressing from both sides fast the fixing to it, simultaneously also can adapt to not equidimension treating processing cylinder jacket 4, the inboard cylinder liner slipmat 605 of being made by the rubber material of solid fixed splint 604 can play better fastening and antiskid effect at the in-process of centre gripping, the top and the bottom fixedly connected with of spacing support 5 have the stop gear 8 corresponding with first clamping mechanism 6 and second clamping mechanism 7, first limiting plate 801 and second limiting plate 802 and first limiting shaft sleeve 803 and second limiting shaft sleeve 804 can play a role to first clamping mechanism 6 and second clamping mechanism 7 The limiting function is achieved, and therefore the clamping precision is guaranteed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic anchor clamps of cylinder jacket finish machining, is including being fixed in mounting flange dish (1) of lathe main shaft (11) one end, its characterized in that: a clamp main body (2) is fixedly connected to one end, far away from a machine tool main shaft (11), of the mounting flange plate (1), a fixed taper sleeve (3) is fixedly connected to the center of one end, far away from the mounting flange plate (1), of the clamp main body (2), and a cylinder sleeve (4) to be processed is sleeved on the outer side of the fixed taper sleeve (3);

a limiting support (5) is fixedly connected to the peripheral side of one end, far away from the mounting flange plate (1), of the clamp main body (2), and a first clamping mechanism (6) and a second clamping mechanism (7) corresponding to the cylinder sleeve (4) to be processed are respectively mounted at the top and the bottom of the clamp main body (2);

the top and the bottom of the limiting support (5) are fixedly connected with limiting mechanisms (8) corresponding to the first clamping mechanism (6) and the second clamping mechanism (7), and mounting grooves (9) corresponding to the first clamping mechanism (6) and the second clamping mechanism (7) are formed in the centers of the top and the bottom of the clamp body (2).

2. The automatic clamp for finish machining of the cylinder liner according to claim 1, characterized in that: the mounting flange plate (1) and the clamp main body (2) are cast into an integral structure.

3. The automatic clamp for finish machining of the cylinder liner according to claim 1, characterized in that: the mounting flange plate (1) is fixedly connected with the machine tool spindle (11) through a plurality of fixing bolts, and a plurality of threaded holes (10) corresponding to the machine tool spindle (11) are formed in the peripheral side of the mounting flange plate (1).

4. The automatic clamp for finish machining of the cylinder liner according to claim 1, characterized in that: the fixed taper sleeve (3) is in a round table-shaped structure, and one end, away from the clamp main body (2), of the fixed taper sleeve (3) is in a round angle structure.

5. The automatic clamp for finish machining of the cylinder liner according to claim 1, characterized in that: first clamping mechanism (6) are including die clamping cylinder (601), die clamping cylinder (601) are installed at the center at anchor clamps main part (2) top, the one end of die clamping cylinder (601) is provided with piston rod (602), the bottom that die clamping cylinder (601) one end was kept away from in piston rod (602) is provided with solid fixed splint (604), the center fixedly connected with at solid fixed splint (604) top rotates support (603) with piston rod (602) corresponding, the bottom fixedly connected with cylinder liner slipmat (605) of solid fixed splint (604).

6. The automatic clamp for finish machining of the cylinder liner according to claim 5, characterized in that: the first clamping mechanism (6) and the second clamping mechanism (7) are distributed in a symmetrical structure, and the first clamping mechanism (6) and the second clamping mechanism (7) are arranged in an inclined structure.

7. The automatic clamp for finish machining of the cylinder liner according to claim 5, characterized in that: the piston rod (602) is arranged in an L-shaped structure.

8. The automatic clamp for finish machining of the cylinder liner according to claim 5, characterized in that: the fixed clamping plate (604) is arranged in an arc-shaped bent plate structure, and the cylinder sleeve anti-skid pad (605) is made of rubber.

9. The automatic clamp for finish machining of the cylinder liner according to claim 5, characterized in that: the limiting mechanism (8) comprises a first limiting plate (801) and a second limiting plate (802), the top and the bottom of the limiting support (5) are respectively fixedly connected with the first limiting plate (801) and the second limiting plate (802), and the centers of the first limiting plate (801) and the second limiting plate (802) are respectively fixedly connected with a first limiting shaft sleeve (803) and a second limiting shaft sleeve (804).

10. The automatic clamp for finish machining of the cylinder liner according to claim 9, characterized in that: two the piston rod (602) is kept away from the one end of anchor clamps main part (2) and is equallyd divide and run through first spacing axle sleeve (803) and second spacing axle sleeve (804) respectively to extend to the outside of first limiting plate (801) and second limiting plate (802).