CN211193047U

CN211193047U - Car spherical hinge spherical conical surface precision positioning anchor clamps

Info

Publication number: CN211193047U
Application number: CN201922282592.1U
Authority: CN
Inventors: 蔡晓峰
Original assignee: Shanghai High Pressure Hydraulic Pump Factory Co ltd
Current assignee: Shanghai High Pressure Hydraulic Pump Factory Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-08-07
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses be applied to axial plunger pump provides a car ball pivot spherical surface conical surface precision positioning anchor clamps, relates to the lathe precision finishing field, including main part dabber and machined part, the grafting end screw thread of main part dabber has cup jointed and has been pulled out the bolt, the middle part activity joint that plays to pull out the bolt has the spacing/play of zigzag to pull out the cab apron, one side and the machined part activity joint that the cab apron was pulled out to the spacing/play of zigzag, the surface that plays to pull out the bolt and one side that is located the machined part are provided with U type quick change clamp plate. This car ball pivot sphere conical surface precision positioning anchor clamps, first step excircle end and second step excircle end transition department have 10 degrees work piece installation direction guide lead mouths, and first step excircle end is the work piece thick location promptly, and the transition is precision positioning to second step excircle end, and the second step excircle end is precision positioning/transition fit with the cooperation mode of work piece ball pivot hole, through pulling out the bolt, the spacing/pull out the cab apron of zigzag, U type quick change clamp plate can realize the installation and tear open get the function, has the location characteristics such as accurate, convenient operation, reliable, swift.

Description

Car spherical hinge spherical conical surface precision positioning anchor clamps

Technical Field

The utility model discloses be applied to axial plunger pump relates to lathe precision finishing technical field, specifically is a car ball pivot sphere conical surface precision positioning anchor clamps.

Background

This ball pivot is the important part in the axial plunger pump, the dynamic balance of the good direct influence pump operation in-process of concentricity of sphere and hole, the utility model discloses car ball pivot precision positioning processing frock for processing ball pivot sphere, excircle, recess, the conical surface etc. belong to precision finishing, it is higher to the centre gripping location requirement of car ball pivot sphere, current technique is direct to carry out the block with machined part and positioning fixture and fixes usually, lack transition fit between machined part and the anchor clamps, lead to comparatively loaded down with trivial details at installation operation, the deviation between the axle center is great, the location nature is relatively poor, it is unqualified to have the processing back car ball pivot sphere, to prior art's not enough, the utility model discloses a car ball pivot spherical surface conical surface precision positioning anchor clamps.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model discloses a car ball pivot spherical surface conical surface precision positioning anchor clamps to solve the problem that proposes among the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a car ball pivot spherical surface conical surface precision positioning anchor clamps, includes main part dabber and machined part, the grafting end screw thread of main part dabber has cup jointed and has pulled out the bolt, the middle part activity joint that plays to pull out the bolt has the spacing cab apron of pulling out of zigzag, one side and the machined part activity joint of cab apron are pulled out to the spacing/play of zigzag, and opposite side and main part dabber end face contact play the spacing effect of machined part, the open end of machined part cup joints with the surface activity of main part dabber, the surface that plays to pull out the bolt and the one side that is located the machined part is provided with U type quick change clamp plate.

Preferably, the periphery of main part dabber just sets gradually first step excircle end, second step excircle end and third step excircle end along the direction of shaft diameter, and first, second step excircle is the triangle-shaped structure, constitutes three circular arc section excircle.

Preferably, the one end of pulling up the bolt is provided with outer hexagon nut, the surface of pulling up the bolt is provided with the chuck, one side of chuck is provided with the post spare, just chuck, post spare and pull up the integrative casting of bolt.

Preferably, the outer surface of the U-shaped quick-change pressure plate is a conical surface (smaller than the diameter of a ball, so that the interference of the turning spherical surface is avoided), an arc-shaped clamping groove is formed in the radial direction of the U-shaped quick-change pressure plate, and the opening degree of the arc-shaped clamping groove is matched with the shaft end of the pulling bolt.

Preferably, the diameter phi of the first step outer circular end is smaller than that of the second step outer circular end by 0.05-0.10 mm.

Preferably, a 10-degree workpiece mounting guide opening is formed in the transition position of the first step outer circular end and the second step outer circular end.

The utility model discloses a car ball pivot spherical surface conical surface precision positioning anchor clamps, its beneficial effect who possesses as follows:

1. this car ball pivot sphere conical surface precision positioning anchor clamps, installation work piece part is three ladder excircle, first ladder excircle end is 0.05 ~ 0.10mm less than second ladder excircle end phi, play thick positioning action when making things convenient for the work piece installation, first ladder excircle end and second ladder excircle end transition department have 10 degrees work piece installation direction guide lead mouth, first ladder excircle end is work piece thick location promptly, it is precision location to transition to second ladder excircle end, the second ladder excircle end is precision location/transition cooperation with the cooperation mode of work piece ball pivot hole, through pulling out the bolt, the lead-in plate is pulled out to the spacing/play of zigzag, U type quick change clamp plate can realize the installation and tear the function open, have the location accurate, convenient operation, reliable, characteristics such as swift.

2. This car ball pivot sphere conical surface precision positioning anchor clamps plays to pull out the bolt and is the special-purpose product, and the left end is the screw thread section for fastening and play to pull out the work piece, and the section is pulled out for playing that plays to pull out the cab apron in the middle, and the right side is the outer hexagonal that the U type trades the clamp plate groove and revolves the spiral shell bolt usefulness, and the axial when the cab apron is used for installing the work piece ball pivot is spacing/played to pull out to the zigzag, and plays to pull out the work piece when demolising, and U type quick change clamp plate is used for quick installation, dismantles the work piece ball pivot, need not twist out whole bolt.

3. According to the precision positioning fixture for the spherical conical surface of the spherical hinge, the first step excircle and the second step excircle are of triangular structures and form three arc section excircles, so that the contact area of the excircle of a workpiece is reduced, and positioning deviation and deformation of the workpiece caused by large interference or heating in machining are avoided; the third ladder is an outer cylinder structure (not a triangular structure, so that the visual fatigue of the workpiece in the rotating process can be effectively reduced), and the diameter of the outer circle is smaller than the inner hole of the workpiece, so that the conical surface of the left end of the workpiece is conveniently machined, and the interference is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the main body of the present invention;

FIG. 3 is a schematic end view of the main body of the present invention;

FIG. 4 is a schematic view of the structure of the Z-shaped limiting/pulling bolt of the present invention;

FIG. 5 is a schematic view of the pull-up transition plate structure of the present invention;

fig. 6 is the schematic view of the U-shaped quick-change pressing plate structure of the present invention.

In the figure: 1. a main body mandrel; 101. a first stepped outer circular end; 102. a second stepped outer circular end; 103. a third step outer circle end; 2. pulling out the bolt; 201. an outer hexagonal nut; 202. a column member; 203. a chuck; 3. a Z-shaped limiting/pulling transition plate; 4. processing a workpiece; 5. a U-shaped quick-change pressing plate; 501. an arc-shaped clamping groove.

Detailed Description

The embodiment of the utility model discloses car ball pivot spherical surface conical surface precision positioning anchor clamps, as shown in fig. 1-6, including main part dabber 1 and machined part 4, main part dabber 1's periphery and along the direction of footpath set gradually first step excircle end 101, second step excircle end 102 and third step excircle end 103, first step excircle end 101 than second step excircle end 102 little phi 0.05 ~ 0.10mm, first step excircle end 101 and second step excircle end 102 transition department have 10 degrees work piece installation direction guide lead mouth.

Furthermore, the first step outer circular end 101 is used for roughly positioning a workpiece, the transition to the second step outer circular end 102 is used for precisely positioning, the matching mode of the second step outer circular end 102 and a spherical hinge inner hole of the processed workpiece is precise positioning/transition matching, the installation and dismounting functions can be realized by pulling the bolt 2, the Z-shaped limiting/pulling the transition plate 3 and the U-shaped quick-change pressing plate 5, and the device has the characteristics of precise positioning, convenient operation, reliability, rapidness and the like.

Therefore, the plug-in end thread of the main body mandrel 1 is sleeved with the pull-out bolt 2, one end of the pull-out bolt 2 is provided with the outer hexagon nut 201, the outer surface of the pull-out bolt 2 is provided with the chuck 203, one side of the chuck 203 is provided with the cylinder member 202, and the chuck 203, the cylinder member 202 and the pull-out bolt 2 are integrally cast and molded.

Specifically, the pulling bolt 2 is a special part, the left end of the pulling bolt is a thread section and is used for fastening and pulling a workpiece, the middle of the pulling bolt is a Z-shaped pulling section for limiting/pulling the transition plate, the right side of the pulling bolt is an outer hexagon for a U-shaped quick-change pressure plate groove and a screwed bolt, the Z-shaped limiting/pulling transition plate is used for axial limiting when the machined part ball hinge is installed and pulling the machined part when the machined part is removed, the U-shaped quick-change pressure plate 5 is used for quickly installing and removing the machined part ball hinge, and the whole bolt does not need to be screwed out.

The middle part of the pulling bolt 2 is movably clamped with a Z-shaped limiting/pulling transition plate 3, one side of the Z-shaped limiting/pulling transition plate 3 is movably clamped with a machined part 4, the open end of the machined part 4 is movably sleeved with the outer surface of the main body core shaft 1, one side of the outer surface of the pulling bolt 2 and located on the machined part 4 is provided with a U-shaped pressure changing plate 5, the outer surface of the U-shaped pressure changing plate 5 is provided with an arc-shaped clamping groove 501 along the radial direction of the U-shaped pressure changing plate 5, and the opening degree of the arc-shaped clamping groove 501 is matched with the shaft end of the pulling bolt 2.

The working principle is as follows: the main body mandrel 1 is installed on a chuck of a numerical control spherical lathe, concentricity is corrected by a meter and is controlled to be 0.005mm, a pulling bolt 2 and a Z-shaped limiting/pulling transition plate 3 are installed at a certain position, a machined part ball hinge is placed to a rough positioning outer circle (a first step outer circle end 101), a U-shaped quick-change pressing plate 5 is inserted, an outer hexagon nut 201 at the right end of the pulling bolt 2 is screwed, the machined part ball hinge is slowly moved to a fine positioning part (a second step outer circle end 102), when the Z-shaped limiting/pulling transition plate 3 is in place, a workpiece can be fastened, installation is completed, and machining starts.

After the machining is finished, the outer hexagon nut 201 at the right end of the pulling bolt 2 is screwed, the ball hinge of the machined part is slowly moved out of the precise positioning outer circle (the second step outer circle end 102) by the Z-shaped limiting/pulling transition plate 3, the ball hinge of the machined part enters the coarse positioning outer circle (the first step outer circle end 101), the U-shaped quick-change pressing plate 5 is taken out, the ball hinge of the machined part is taken out, and the machining is finished.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a car spherical hinge spherical conical surface precision positioning anchor clamps, includes main part dabber (1) and machined part (4), its characterized in that: the bolt (2) has been pulled out to the grafting end screw thread of main part dabber (1) cup joints, the middle part activity joint that plays to pull out bolt (2) has the spacing/play of zigzag to pull out cab apron (3), one side and machined part (4) activity joint that the cab apron (3) was pulled out to the spacing/play of zigzag, opposite side and main part dabber (1) end face contact play machined part (4) limiting displacement, the open end of machined part (4) cup joints with the surface activity of main part dabber (1), the surface that plays to pull out bolt (2) and the one side that is located machined part (4) are provided with U type quick change clamp plate (5).

2. The precise positioning fixture for the spherical surface and the conical surface of the vehicular spherical hinge according to claim 1, is characterized in that: the periphery of main part dabber (1) just sets gradually first ladder excircle end (101), second ladder excircle end (102) and third ladder excircle end (103) along the direction of shaft diameter, and first, second ladder excircle be the triangle-shaped structure, constitutes three circular arc section excircle.

3. The precise positioning fixture for the spherical surface and the conical surface of the vehicular spherical hinge according to claim 1, is characterized in that: the one end of pulling up bolt (2) is provided with outer hexagon nut (201), the surface of pulling up bolt (2) is provided with chuck (203), one side of chuck (203) is provided with column spare (202), just chuck (203), column spare (202) and pull up bolt (2) integrated casting.

4. The precise positioning fixture for the spherical surface and the conical surface of the vehicular spherical hinge according to claim 1, is characterized in that: the outer surface of U type quick change clamp plate (5) is the conical surface (being less than the ball diameter, avoids car sphere interference) and has seted up arc draw-in groove (501) along U type quick change clamp plate (5) radial direction, the aperture of arc draw-in groove (501) and the axle head looks adaptation of pulling out bolt (2).

5. The precise positioning fixture for the spherical surface and the conical surface of the vehicular spherical hinge according to claim 2, is characterized in that: the first step outer circle end (101) is phi 0.05-0.10 mm smaller than the second step outer circle end (102).

6. The precise positioning fixture for the spherical surface and the conical surface of the vehicular spherical hinge according to claim 2, is characterized in that: and a 10-degree workpiece mounting guide opening is formed at the transition position of the first step outer circular end (101) and the second step outer circular end (102).