CN220427620U - Horizontal fixing structure for machining outer surface of irregular precision casting - Google Patents

Abstract

The utility model discloses a horizontal fixing structure for machining the outer surface of an irregular precision casting, which comprises a bearing table, wherein hydraulic cylinders are fixedly arranged at two ends of the upper surface of the bearing table, mounting plates are fixedly arranged on output shafts of the hydraulic cylinders, positioning guide rods are slidably arranged at four corners of the mounting plates, the tail end of each positioning guide rod is arranged on the upper surface of the bearing table, a supporting block is fixedly arranged at one end position, close to each other, of two mounting plates, a stepping motor is fixedly arranged on one mounting plate, an angle sensor is fixedly arranged on the other mounting plate, a transmission rod of the angle sensor and an output shaft of the stepping motor penetrate through the supporting block and are in rotary connection with the supporting block, and a center fixing plate is arranged at the position, close to each other, of the two mounting plates. The utility model can meet the processing requirements of different directions, does not need to design additional fixture clamps, and saves the production preparation cost.

Description

Horizontal fixing structure for machining outer surface of irregular precision casting

Technical Field

The utility model relates to the technical field of machining tools, in particular to a horizontal fixing structure for machining the outer surface of an irregular precision casting.

Background

Precision casting refers to the general term for a process to obtain precisely dimensioned castings. Compared with the traditional sand casting process, the casting obtained by precision casting is more accurate in size and better in surface finish. It comprises the following steps: investment casting, ceramic die casting, metal die casting, pressure casting and lost foam casting, precision casting is called lost wax casting, the product is precise and complex, is close to the final shape of a part, can be directly used without processing or with little processing, and is an advanced process of near net forming.

In the process of machining the outer surface of the precision casting, a plurality of machining processes such as turning, cutting, milling, drilling and the like are mainly included, and in the process of machining, a workpiece to be machined is firstly fixed on a tool, and the machining process is carried out on the workpiece through machining equipment.

For the external surface machining process of irregular-shaped precision castings, the current mode is as follows: for the irregular fine castings, the horizontal fixing structure for the outer surface machining of the irregular fine castings is provided for solving the problems.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a horizontal fixing structure for machining the outer surface of an irregular precision casting.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the horizontal fixing structure for machining the outer surface of the irregular precision casting comprises a bearing table, wherein hydraulic cylinders are fixedly arranged at two end positions of the upper surface of the bearing table, an installation plate is fixedly arranged on an output shaft of each hydraulic cylinder, positioning guide rods are slidably arranged at four corners of the installation plate, and the tail end of each positioning guide rod is arranged on the upper surface of the bearing table;

the two mounting plates are fixedly arranged at the positions of one ends, close to each other, of the mounting plates, a stepping motor is fixedly arranged on one mounting plate, an angle sensor is fixedly arranged on the other mounting plate, a transmission rod of the angle sensor and an output shaft of the stepping motor penetrate through the supporting blocks and are in rotary connection with the supporting blocks, a center fixing plate is arranged at the positions, close to each other, of the two mounting plates, and the transmission rod of the angle sensor, the output shaft of the stepping motor and the center fixing plate are fixedly connected;

the center fixed plate center point position is provided with a circular notch, the upper surface and the lower surface of the center fixed plate are uniformly distributed and fixedly provided with a first cylinder group along the center point of the circular notch, the upper surface of the bearing table right below the center fixed plate is fixedly provided with a second cylinder group, and output shafts of the first cylinder group and the second cylinder group are respectively provided with a first clamping block and a second clamping block.

Preferably, the first clamping block and the second clamping block are fixedly provided with inserted bars, and fastening screws are arranged between the inserted bars and output shafts of the first cylinder group and the second cylinder group.

Preferably, the transmission rod of the angle sensor and the output shaft of the stepping motor are fixedly provided with movable balls, the movable balls are externally provided with stable ball sleeves, and the stable ball sleeves are arranged on the mounting plate.

Preferably, the cooperation recess has been seted up to firm ball cover inner wall, the inside fastening piece that is provided with of cooperation recess, fixed mounting has auxiliary cylinder on the mounting panel corresponds the position of firm ball cover, auxiliary cylinder's output shaft runs through firm ball cover and with the fastening piece between fixed connection.

Preferably, rubber sheets are fixedly arranged on the inner wall positions of the first clamping block and the second clamping block.

The horizontal fixing structure for machining the outer surface of the irregular precision casting has the beneficial effects that: in the use process of the scheme, one fixture is used for replacing a plurality of fixtures, so that the machining requirements of different directions in the same precision casting can be met, additional fixtures are not required to be designed, and the production preparation cost is saved

Drawings

FIG. 1 is a schematic structural view of a horizontal fixing structure for machining the outer surface of an irregular precision casting;

FIG. 2 is a schematic structural view of a central fixing plate component of a horizontal fixing structure for machining the outer surface of an irregular precision casting;

fig. 3 is a sectional view of a stable spherical sleeve component of a horizontal fixing structure for machining the outer surface of an irregular precision casting.

In the figure: 1. a support table; 2. a hydraulic cylinder; 3. positioning a guide rod; 4. an angle sensor; 5. stabilizing the ball sleeve; 6. a center fixing plate; 7. a first cylinder group; 8. a support block; 9. a stepping motor; 10. a second cylinder group; 11. a second clamping block; 12. an auxiliary cylinder; 13. a circular notch; 14. a first clamping block; 15. fastening a screw; 16. a rod; 17. a mating groove; 18. a fastening tab; 19. a movable ball; 20. and (3) mounting a plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, a horizontal fixing structure for machining the outer surface of an irregular precision casting comprises a bearing table 1, wherein hydraulic cylinders 2 are fixedly arranged at two ends of the upper surface of the bearing table 1, an output shaft of each hydraulic cylinder 2 is fixedly provided with a mounting plate 20, four corners of each mounting plate 20 are slidably provided with positioning guide rods 3, and the tail end of each positioning guide rod 3 is provided with the upper surface of the bearing table 1;

the two mounting plates 20 are fixedly arranged at one end close to each other, a stepping motor 9 is fixedly arranged on one mounting plate 20, an angle sensor 4 is fixedly arranged on the other mounting plate 20, a transmission rod of the angle sensor 4 and an output shaft of the stepping motor 9 penetrate through the supporting block 8 and are rotationally connected with the supporting block 8, a center fixing plate 6 is arranged at the position close to each other of the two mounting plates 20, and the transmission rod of the angle sensor 4 and the output shaft of the stepping motor 9 are fixedly connected with the center fixing plate 6;

the center fixed plate 6 central point position has seted up circular breach 13, and central fixed plate 6 upper surface and lower surface are evenly distributed fixed mounting along the centre point of circular breach 13 and have first cylinder group 7, bearing platform 1 is located fixed mounting has second cylinder group 10 on the upper surface of center fixed plate 6 directly under, all be provided with first clamp splice 14 and second clamp splice 11 on the output shaft of first cylinder group 7 and second cylinder group 10, all fixed mounting has inserted bar 16 on first clamp splice 14 and the second clamp splice 11, be provided with fastening screw 15 between inserted bar 16 and the output shaft of first cylinder group 7 and second cylinder group 10, all fixed mounting has movable ball 19 on the output shaft of angle sensor 4, the outside firm spherical sleeve 5 that is provided with of movable ball 19, the spherical sleeve 5 is installed on mounting panel 20, firm spherical sleeve 5 inner wall has seted up the cooperation recess 17, the inside fastening piece 18 that is provided with of cooperation recess 17, 20 correspond on the position of spherical sleeve 5 fixed mounting auxiliary cylinder 12, the firm output shaft 12 runs through between fixed mounting plate 14 and the fixed mounting rubber piece of first clamp splice 18 on the fixed position of fixed mounting plate and the second clamp splice 5.

The use principle and the advantages are that: in the use process, the integral structure is installed in a CNC machining center, at the moment, two mounting plates 20 are positioned at initial positions, then a precision casting to be machined is placed on a position of a bearing table 1, which is positioned at a second cylinder group 10, along a circular notch 13, at the moment, the relative horizontal plane of the casting to be machined is attached to the upper surface of the bearing table 1, the second cylinder group 10 is started, the lower side of the casting is fixed through a second clamping block 11, the first cylinder group 7 is started again, and the casting is completely fixed through a first clamping block 14;

at this time, through the programming function in the CNC machining center, relevant data such as the placement position of the casting, the height data of the rotating point of the stepping motor 9 relative to the upper surface of the supporting table 1 and the like are recorded in advance;

finally, the second cylinder group 10 is stopped to start, the casting is not fixed on the supporting table 1, at this time, according to the program of the CNC machining center, the running state of the whole structure is controlled, for example, the casting is lifted to the corresponding height, when the outer surfaces of different angle positions need to be machined, the stepping motor 9 is started, the whole center fixing plate 6 is driven to rotate to a certain angle, the angle sensor 4 is used for recording the rotation angle, after the whole center fixing plate rotates to a certain angle, the auxiliary cylinder 12 is started to enable the fastening piece 18 to completely abut against the movable ball 19, then the transmission rod of the angle sensor 4 and the output shaft of the stepping motor 9 are not selected, the stability of the center fixing plate 6 is maintained, and the machining position after the center fixing plate 6 is matched.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. The horizontal fixing structure for machining the outer surface of the irregular precision casting comprises a bearing table (1) and is characterized in that hydraulic cylinders (2) are fixedly arranged at two end positions of the upper surface of the bearing table (1), an output shaft of each hydraulic cylinder (2) is fixedly provided with a mounting plate (20), four corners of each mounting plate (20) are slidably provided with positioning guide rods (3), and the tail end of each positioning guide rod (3) is provided with the upper surface of the bearing table (1);

a supporting block (8) is fixedly arranged at one end position, close to each other, of each of the two mounting plates (20), a stepping motor (9) is fixedly arranged on one mounting plate (20), an angle sensor (4) is fixedly arranged on the other mounting plate (20), a transmission rod of the angle sensor (4) and an output shaft of the stepping motor (9) penetrate through the supporting block (8) and are rotationally connected with the supporting block (8), a center fixing plate (6) is arranged at the position, close to each other, of each of the two mounting plates (20), and the transmission rod of the angle sensor (4), the output shaft of the stepping motor (9) and the center fixing plate (6) are fixedly connected;

the utility model discloses a cylinder assembly structure, including fixed plate (6) and bearing platform, center fixed plate (6) central point position has seted up circle breach (13), just center fixed plate (6) upper surface and lower surface are evenly distributed fixed mounting along the centre of a circle point of circle breach (13) have first cylinder group (7), bearing platform (1) are located on the upper surface under center fixed plate (6) fixed mounting have second cylinder group (10), all be provided with first clamp splice (14) and second clamp splice (11) on the output shaft of first cylinder group (7) and second cylinder group (10).

2. The horizontal fixing structure for machining the outer surface of the irregular fine casting according to claim 1, wherein the first clamping block (14) and the second clamping block (11) are fixedly provided with inserting rods (16), and fastening screws (15) are arranged between the inserting rods (16) and output shafts of the first cylinder group (7) and the second cylinder group (10).

3. The horizontal fixing structure for machining the outer surface of the irregular precision casting according to claim 1, wherein a movable ball (19) is fixedly installed on a transmission rod of the angle sensor (4) and an output shaft of the stepping motor (9), a stable ball sleeve (5) is arranged outside the movable ball (19), and the stable ball sleeve (5) is installed on the installation plate (20).

4. The horizontal fixing structure for machining the outer surface of the irregular precision casting according to claim 3, wherein a matching groove (17) is formed in the inner wall of the stable spherical sleeve (5), a fastening piece (18) is arranged in the matching groove (17), an auxiliary cylinder (12) is fixedly installed on the mounting plate (20) corresponding to the position of the stable spherical sleeve (5), and an output shaft of the auxiliary cylinder (12) penetrates through the stable spherical sleeve (5) and is fixedly connected with the fastening piece (18).

5. The horizontal fixing structure for machining the outer surface of the irregular fine casting according to claim 1, wherein rubber sheets are fixedly arranged on the inner wall positions of the first clamping block (14) and the second clamping block (11).