CN205614379U - Automatic hydraulically operated fixture in branch - Google Patents

Abstract

The utility model discloses an automatic hydraulically operated fixture in branch, include the anchor clamps main part and install the stand that is used for passing the jar hole of cylinder body blank in the anchor clamps main part, install in the both sides of anchor clamps main part, be used for the elevation positioning part of supporting cylinder chaeta base, install in the middle part of the anchor clamps main part, be arranged in to divide positioning element along the controlling of main bearing seat thickness orientation of cylinder body blank, and install on the stand, be arranged in dividing around along the jar hole around diameter orientation first positioning element. The utility model provides an automatic hydraulically operated fixture in branch respectively through the direction of height to the cylinder body blank about, orientation and fore -and -aft direction fix a position, the three -dimensional location of having realized the cylinder body blank further presss from both sides tight and manufacturing procedure and provides good location basis for subsequent, problem that can effectual solution cylinder body blank processing surplus maldistribution is guaranteed that the high -quality locating clip of cylinder body blank high efficiency is tight, and then is guaranteed the normal production run of quick production line.

Description

An automatic centering hydraulic clamp

technical field

The utility model relates to the field of mechanical processing equipment, in particular to an automatic centering hydraulic clamp.

Background technique

Before the cylinder block blank is processed, the cylinder block blank needs to be positioned and clamped. As shown in Figures 1 to 3, the cylinder block blank is composed of several main bearing seats arranged, and several cylinder holes are arranged on the top surface. The main bearing seat There is a semicircular hole at the lower part of the middle part.

In the prior art, most of the jigs used to clamp the cylinder blank are manual adjustment fixtures. After the cylinder blank needs to be marked manually, it is then installed on the fixture for processing. During the process, the workpiece needs to be adjusted again in the fixture. position on the

For the manual adjustment fixture, through the form of scribing, the state of the cylinder blank on the fixture can be adjusted many times, and finally an ideal workpiece can be processed. The manual adjustment fixture is suitable for processing a small number of workpieces, and the efficiency is low.

In addition, in the prior art, when processing batches of workpieces, common automatic hydraulic clamps are generally used. This kind of common automatic hydraulic clamps is positioned from the outer surface of the cylinder blank. This kind of clamps can quickly position and clamp the workpieces.

However, because ordinary automatic hydraulic fixtures only position the outer surface of the cylinder blank, when there is an error in the manufacture of the outer surface of the cylinder blank, it is easy to cause inaccurate positioning in other places, so that the fixture blank is far from the position that needs to be positioned theoretically. Large, the distribution of the machining allowance of the cylinder blank is not uniform enough, so that the final processed product state is not the best device, and at the same time, there is a higher requirement for the casting size of the cylinder blank, resulting in more waste of the cylinder blank .

The shape positioning adopted by ordinary automatic hydraulic clamps can make the partial parts of the cylinder body blank placed in the ideal position, but for the entire cylinder body blank, the cumulative error is large, which is not the most ideal position, and the cylinder body blank cannot be reasonably allocated In the process of processing, it is often necessary to increase the processing steps and adjust the state of the workpiece many times, wasting time.

At the same time, because the current production line generally requires relatively high efficiency, and the takt reaches ≤6 minutes/piece, this puts forward changes in the positioning, clamping quality and efficiency of the cylinder blank fixture.

Therefore, how to improve the positioning accuracy of the hydraulic clamp, improve the processing quality of the cylinder block blank, and save costs are currently technical problems to be solved by those skilled in the art.

Utility model content

The purpose of the utility model is to provide an automatic centering hydraulic clamp. By adding a centering mechanism, the automatic centering hydraulic clamp can position and clamp the cylinder blank from multiple angles, and the positioning accuracy can be effectively improved.

In order to solve the above technical problems, the utility model provides the following technical solutions:

An automatic centering hydraulic clamp, comprising a clamp main body and a column mounted on the clamp main body for passing through the cylinder hole of the cylinder blank, and further comprising:

a height positioning component installed on both sides of the clamp body and used to support the cylinder blank;

The left and right centering positioning parts are installed in the middle of the fixture main body and are used for positioning along the thickness direction of the main bearing seat of the cylinder blank;

A first front and rear centering positioning component installed on the column for positioning along the front and rear diameter directions of the cylinder bore.

Preferably, it further includes a second front and rear centering positioning component installed in the middle of the clamp body for centering positioning along the diameter direction of the semicircular hole of the cylinder block blank.

Preferably, the first front and rear center positioning parts and the second front and rear center positioning parts both include front and rear center positioning hydraulic cylinders, and the head of the piston rod of the front and rear center positioning hydraulic cylinders is symmetrically arranged with two The slopes are all slidably connected with a front and rear centering pin.

Preferably, the left and right centering positioning components include a gear and two racks respectively meshing with both sides of the gear and capable of moving parallel to each other to clamp the main bearing seat.

Preferably, left and right centering positioning blocks for positioning along the thickness direction of the main bearing seat are provided on the two racks.

Preferably, the left and right center positioning component further includes a left and right center positioning hydraulic cylinder for driving the gear to rotate.

Preferably, it also includes a floating pressing plate installed on the top of the clamp body for pressing the cylinder block blank.

Preferably, it also includes an auxiliary supporting hydraulic cylinder installed at the bottom of the fixture main body for supporting the cylinder blank.

The automatic centering hydraulic clamp provided by the utility model includes a clamp main body and a column installed on the clamp main body for passing through the cylinder hole of the cylinder blank; installed on both sides of the clamp main body for supporting the The height positioning part of the cylinder block blank; the left and right centering positioning parts installed in the middle of the fixture main body for positioning along the thickness direction of the main bearing seat of the cylinder block blank; The first front and rear centering positioning parts are positioned in the front and rear diameter directions of the cylinder bore. The automatic centering hydraulic fixture realizes the three-dimensional positioning of the cylinder blank by positioning the cylinder blank in the height direction, left-right direction, and front-rear direction, and provides a good support for subsequent further clamping and processing procedures. The positioning basis can effectively solve the problem of uneven distribution of the machining allowance of the cylinder body blank, ensure efficient and high-quality positioning and clamping of the cylinder body blank, and then ensure the normal production operation of the fast production line.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the front view of cylinder block blank in the prior art;

Fig. 2 is the top view of cylinder block blank in the prior art;

Fig. 3 is the left view of cylinder body blank in the prior art;

Fig. 4 is a structural schematic diagram of a specific embodiment of the automatic centering hydraulic clamp provided by the utility model;

Fig. 5 is a schematic structural view of the left and right central positioning components shown in Fig. 4;

Fig. 6 is a schematic structural view of the front and rear central positioning components shown in Fig. 4;

Fig. 7 is a structural schematic diagram of another specific embodiment of the automatic centering hydraulic clamp provided by the present invention;

Among them: 11-main bearing seat, 12-cylinder hole, 13-semi-circular hole, 21-height positioning part, 22-left and right center positioning part, 221-gear, 222-rack, 223-left and right center positioning block, 23 - the first front and rear center positioning part, 231 - front and rear center positioning pin, 232 - front and rear center positioning hydraulic cylinder, 24 - second front and rear center positioning part, 25 - floating pressing plate, 26 - auxiliary support hydraulic cylinder.

detailed description

The core of the utility model is to provide an automatic centering hydraulic clamp. The automatic centering hydraulic clamp can position and clamp the cylinder blank by adding a centering mechanism, and the positioning accuracy is significantly improved.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 to Fig. 7, Fig. 1 is the front view of cylinder block blank in prior art; Fig. 2 is the top view of cylinder block blank in prior art; Fig. 3 is the left side view of cylinder block blank in prior art; Fig. 4 is a structural schematic diagram of a specific embodiment of the automatic centering hydraulic clamp provided by the utility model; FIG. 5 is a structural schematic diagram of the left and right centering positioning components shown in FIG. 4; FIG. 6 is the front and rear centering shown in FIG. Structural schematic diagram of positioning components; FIG. 7 is a structural schematic diagram of another specific embodiment of the automatic centering hydraulic clamp provided by the utility model.

In this embodiment, the automatic centering hydraulic clamp includes:

Fixture body;

a post mounted on the fixture body for passing through the cylinder bore 12 of the cylinder blank;

A height positioning part 21 installed on both sides of the clamp body for supporting the cylinder blank;

The left and right central positioning parts 22 are installed in the middle of the fixture body and are used for positioning along the thickness direction of the main bearing seat 11 of the cylinder blank;

A first front and rear centering positioning component 23 installed on the column for positioning along the front and rear diameter directions of the cylinder bore 12 .

It should be noted here that the hydraulic clamp provided in this embodiment can be applied to a cylinder block blank with six cylinder holes, as shown in FIGS. 1 to 3 , and can also be applied to a cylinder block blank with four cylinder holes.

In addition, "left and right" referred to in this embodiment refers to the direction along which the main bearing housing 11 is arranged, as shown by arrow B in the figure, and "front and rear" refers to the direction along which the main bearing housing 11 is arranged, as shown in Arrow C1 or C2 in the figure.

The automatic centering hydraulic fixture realizes the three-dimensional positioning of the cylinder blank by positioning the cylinder blank in the height direction, left-right direction and front-rear direction, which provides a good positioning basis for subsequent further clamping and processing, and can effectively It solves the problem of uneven distribution of the machining allowance of the cylinder body blank, ensures efficient and high-quality positioning and clamping of the cylinder body blank, and then ensures the normal production and operation of the fast production line.

Similarly, there are preferably at least two height positioning components 21 to ensure accurate positioning of the height of the cylinder blank.

Preferably, in order to ensure that after the cylinder block blank is put into the fixture main body, each centering part and the cylinder block blank basically coincide, the number of columns is preferably two, and the cooperation between the column and the cylinder hole 12 is generally selected The principle of uniform distribution, for example, for a cylinder block blank with six cylinder holes 12, two uprights are respectively matched with the second and fifth cylinder holes 12 of the cylinder block blank.

Further, the hydraulic clamp also includes a second front and rear central positioning component 24 installed in the middle of the clamp main body for central positioning along the diameter direction of the semicircular hole 13 of the cylinder blank.

Specifically, as shown in Figure 6, the first front and rear center positioning parts 23 and the second front and rear center positioning parts 24 all include front and rear center positioning hydraulic cylinders 232, and the heads of the piston rods of the front and rear center positioning hydraulic cylinders 232 are symmetrical. Two slopes are provided, and the slopes are all slidably connected with a front and rear center positioning pin 231. When the piston rod of the front and rear center positioning hydraulic cylinder 232 stretches out, the two front and rear center positioning pins 231 stretch out at the same time, gradually opening Open until the centering pin 231 abuts against the cylinder bore 12 or the hole wall of the semicircular hole 13 before and after, to realize the centering positioning function.

It should be noted here that since the first front and rear center positioning parts 23 are positioned differently from the second front and rear center positioning parts 24, the first front and rear center positioning parts 23 are placed along the horizontal direction, and the second front and rear center positioning parts 23 are placed along the horizontal direction. The middle positioning part 24 is placed along the vertical direction.

At the same time, since there are preferably two uprights, there should be two second front and rear centering positioning components 24 corresponding thereto to position two different cylinder bores 12 to improve positioning accuracy.

On the other hand, as shown in FIG. 5 , the left and right central positioning parts 22 include a gear 221 and two racks 222 that mesh with both sides of the gear 221 and can move in parallel until the main bearing seat 11 is clamped. The lengths of the bars 222 are different. When the gear 221 rotates clockwise, the two racks 222 move at the same speed in opposite directions at the same time. Block 223, when the two racks 222 move towards each other for a distance, the two left and right centered positioning blocks 223 gradually clamp the main bearing seat 11 along the thickness direction to realize the positioning in the left and right directions.

In the above arrangement, one gear 221 drives two racks 222 to ensure that the moving distances of the two racks 222 are the same, ensuring the centering effect of the cylinder blank.

Of course, the left and right central positioning component 22 also includes a left and right central positioning hydraulic cylinder for driving the gear 221 to rotate.

In addition, the hydraulic clamp provided in this embodiment also includes a floating pressing plate 25 installed on the top of the clamp main body for pressing the cylinder block blank. A hydraulic cylinder, the hydraulic clamp also includes an auxiliary supporting hydraulic cylinder 26 installed at the bottom of the clamp main body for supporting the blank of the cylinder body.

The automatic centering hydraulic fixture provided in this embodiment includes the following action flow when positioning and clamping the cylinder blank:

1. The cylinder blank is hoisted to the main body of the fixture;

2. Make the two columns on the fixture main body pass through the second and fifth cylinder holes 12 of the cylinder blank;

3. The bottom of the cylinder blank, at the position shown by the arrow A in Figure 1, is positioned in contact with the corresponding height positioning part 21 on the fixture to ensure the height direction positioning;

4. Start the hydraulic cylinder of the left and right central positioning part 22, drive the left and right central positioning part 22 to work, and make the left and right clamping points of the left and right central positioning part 22 move toward each other along the thickness direction of the main bearing seat 11, as shown in Figure 1 In the direction shown by the arrow B, when the left and right centering positioning blocks 223 of the left and right centering positioning parts 22 touch the surface of the main bearing seat 11, the main bearing seat 11 is clamped, that is, the entire cylinder body blank is clamped to ensure that the cylinder body blank Positioning in the left and right directions;

5. The hydraulic cylinders of the first front and rear centering positioning part 23 and the second front and rear centering positioning part 24 are activated, driving the respective front and rear centering positioning pins 231 to protrude symmetrically and move in the direction of arrow C1 and arrow C2 respectively, Respectively contact the inner wall of the cylinder hole 12 and the inner wall of the semicircular hole 13 on the cylinder block blank, and finally ensure the front and rear direction positioning of the cylinder block blank.

6. The hydraulic cylinder used to control the floating pressing plate 25 on the main body of the fixture starts, and the floating pressing plate 25 presses the cylinder body blank;

7. The auxiliary support hydraulic cylinder 26 on the main body of the fixture starts to complete the auxiliary support of the cylinder blank;

8. Start processing;

9. After the processing is completed, the hydraulic cylinders of each centering part and pressing part start in reverse order;

10. Auxiliary support hydraulic cylinder 26 retracts;

11. Loosen the floating pressing plate 25;

12. The front and rear center positioning pins 231 of the first front and rear center positioning part 23 and the second front and rear center positioning part 24 are retracted;

13. Loosen the left and right centering positioning blocks 223 of the left and right centering positioning parts 22;

14. Lift the cylinder block blank and lift the cylinder block blank from the main body of the fixture;

15. Enter the next working cycle.

The automatic centering hydraulic fixture provided by the utility model quickly locates the cylinder body blank from the internal structure, so that the cylinder body blank can be quickly and accurately positioned at the position of the theoretical design state, and the machining allowance on the outer surface of the cylinder body blank can be evenly distributed , The workpiece is automatically clamped by the hydraulic system, which not only improves the machining accuracy of the workpiece, but also effectively avoids the waste of materials and saves production costs.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The automatic centering hydraulic clamp provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (8)

1. automatically point in a hydraulically operated fixture, including jig main body and be arranged on described fixture For the column of the cylinder holes (12) through cylinder blank in main body, it is characterised in that also include:

It is arranged on the both sides of described jig main body, for supporting the altitude location of described cylinder blank Parts (21)；

It is arranged in the middle part of described jig main body, for the main bearing seat (11) along described cylinder blank Middle positioning element (22) is divided in the left and right of thickness direction location；

It is arranged on described column, positions for diametric(al) before and after described cylinder holes (12) First before and after point in positioning element (23).

Hydraulically operated fixture in automatic point the most according to claim 1, it is characterised in that also Including being arranged in the middle part of described jig main body, for the semicircle orifice (13) along described cylinder blank Diametric(al) divide middle location second before and after point in positioning element (24).

Hydraulically operated fixture in automatic point the most according to claim 2, it is characterised in that institute Point middle positioning element (24) before and after positioning element (23) and described second in dividing before and after stating first All include front and back dividing middle positioning hydraulic cylinders (232), described point middle positioning hydraulic cylinders (232) front and back The head of piston rod be symmetrically arranged with two inclined-planes, before described inclined-plane all slidably connects one Alignment pin (231) in rear point.

4. according to point middle hydraulically operated fixture automatically described in claims 1 to 3 any one, its Be characterised by, described left and right divide middle positioning element (22) include gear (221) and respectively with The both sides of described gear (221) are engaged, can parallel opposed longer sides be moved to clamping spindle bearing (11) Two tooth bars (222).

Hydraulically operated fixture in automatic point the most according to claim 4, it is characterised in that two It is equipped with on tooth bar described in bar (222) for positioning along described main bearing seat (11) thickness direction Left and right divide middle locating piece (223).

Hydraulically operated fixture in automatic point the most according to claim 5, it is characterised in that institute State positioning element (22) in left and right point and also include the left side for driving described gear (221) to rotate Part middle positioning hydraulic cylinders on the right side.

Hydraulically operated fixture in automatic point the most according to claim 6, it is characterised in that also Including being arranged on the top of described jig main body, for compressing the floating compression of described cylinder blank Plate (25).

Hydraulically operated fixture in automatic point the most according to claim 7, it is characterised in that also Including being arranged on the bottom of described jig main body, for supporting the auxiliary support of described cylinder blank Hydraulic cylinder (26).