CN204819154U - Frock clamp of floating gripper - Google Patents

Abstract

The utility model relates to a floating support tooling fixture, which comprises a worktable, a stop positioning device and at least one floating support device, which is located in the middle of the stop fixing device and fixed on the workbench. The floating support device includes a floating balance blocks, floating cylinders and floating oil cylinders, the floating oil cylinders are arranged symmetrically on both sides of the floating cylinders along the radial direction of the workpiece to be processed, and the floating cylinders are placed under the floating balance weight to support the floating balance weight against the surface of the workpiece to be processed , the floating oil cylinder is placed under the floating balance weight, and is used to support the floating balance weight to hold the surface of the workpiece to be processed, and the floating support device is used to assist the positioning of the irregular shape of the workpiece to be processed. Through the effect of the floating cylinder and the floating oil cylinder, The floating balance weight can be close to the surface of the workpiece to be processed, so as to ensure that the workpiece to be processed will not vibrate and deform during the grinding process.

Description

A Floating Support Fixture

technical field

The utility model relates to a tooling fixture, in particular to a floating supporting tooling fixture.

Background technique

When machining workpieces with irregular shape or poor rigidity such as "long axis" (such as the rotor of Roots flowmeter), due to its irregular shape and insufficient rigidity, it is difficult to locate the positioning device. However, during the machining process, since the ejector rod cannot fit perfectly with its irregular surface, the workpiece will vibrate, and the workpiece is easily deformed by the external force of processing and extrusion, resulting in the machining accuracy of the workpiece. Insufficient, in severe cases, the workpiece will be scrapped and the material will be wasted.

Utility model content

In order to overcome the lack of processing accuracy caused by vibration and deformation of the workpiece to be processed, the utility model provides a floating support tooling fixture, which can float and support the workpiece to be processed so that it does not receive external influences in the processing engineering , Improve machining accuracy.

The technical solution adopted by the utility model is: a floating support tooling fixture, which is used to fix the workpiece to be processed with the supporting shaft, which includes a worktable to ensure the coaxiality of the workpiece to be processed; the stop positioning The device is symmetrically fixed on the worktable along the axial direction of the workpiece to be processed, and is used to stop and position the support shaft; at least one floating support device is located in the middle of the stop fixing device and fixed on the workbench, and the floating support device includes A floating balance weight, a floating cylinder and a floating oil cylinder, the floating oil cylinders are arranged symmetrically on both sides of the floating cylinder along the radial direction of the workpiece to be processed, and the floating cylinder is placed under the floating balance weight to support the floating balance weight close to the workpiece to be processed The surface of the workpiece, and the floating oil cylinder is placed under the floating balance weight to support the floating balance weight to hold the surface of the workpiece to be processed.

The stop positioning device includes a supporting table, a first pressing block and a second pressing block, the supporting table is located below the supporting shaft, and the first pressing block and the second pressing block are located on both sides of the supporting shaft and are tightly against the supporting shaft.

The first pressing block is fixed on the supporting platform.

The second pressing block is hinged on the supporting platform, one end is tightly against the supporting shaft, and the other end is connected with the driving member.

The first pressing block is provided with an L-shaped structure.

The end where the second pressure block is in close contact with the support shaft is an inclined plane, which is inclined toward the direction of the support shaft.

The floating support device also includes a floating balance weight seat, the floating balance weight seat includes a first through hole and an open groove, the floating cylinder is socketed in the open groove, and the floating oil cylinder is socketed in the first through hole , the floating balance weight is placed on the upper surface of the floating balance weight seat.

The beneficial effects of the utility model are: the utility model adopts the floating support device to assist the positioning of the workpiece to be processed with irregular shape, and through the action of the floating cylinder and the floating oil cylinder, the floating balance block can be close to the surface of the workpiece to be processed, ensuring The workpiece will not vibrate and deform during the grinding process, and the machining accuracy is guaranteed to be ±0.01mm. The fixture is small in size and does not need additional positioning space. It is easy to fix and disassemble for cleaning.

Description of drawings

Fig. 1 is a structural diagram of the tooling fixture of the present utility model.

Fig. 2 is a top view of the floating balance weight seat of the utility model.

Fig. 3 is a bottom view of the floating balance weight seat of the utility model.

1-piece to be processed, 2-support shaft, 3-table, 41-floating balance weight, 42-floating cylinder, 43-floating oil cylinder, 44-floating balance weight seat, 441-first through hole, 442-opening slot , 51-supporting table, 52-first pressing block, 53-second pressing block, 531-inclined plane, 54-adjusting hole, 55-driving member.

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is further described:

As shown in Figure 1, a floating support tooling fixture is used to fix the workpiece 1 to be processed that is sleeved with the support shaft 2, and it includes a worktable 3 to ensure the coaxiality of the workpiece 1 to be processed; the stop positioning The device is symmetrically fixed on the workbench 3 along the axial direction of the workpiece 1 to be processed, and is used to stop and position the support shaft 2; at least one floating support device is located in the middle of the stop fixing device and is fixed on the workbench 3. The floating support device includes a floating balance weight 41, a floating cylinder 42 and a floating oil cylinder 43, and the floating oil cylinder 43 is arranged symmetrically on both sides of the floating cylinder 42 along the radial direction of the workpiece 1, and the floating cylinder 42 is placed on the floating balance weight 41 Below, it is used to support the floating balance weight 41 close to the surface of the workpiece 1 to be processed, and the floating oil cylinder 43 is placed under the floating balance weight 41, and is used to support the floating balance weight 41 to hug the surface of the workpiece 1 to be processed. Auxiliary positioning is performed on the workpiece 1 with irregular shape. Through the action of the floating cylinder 42 and the floating oil cylinder 43, the floating balance weight 41 can be close to the surface of the workpiece 1 to ensure that the workpiece 1 will not be damaged during the grinding process. In the event of vibration and deformation, the processing accuracy is guaranteed to be ±0.01mm, and the fixture is small in size, without additional positioning space, easy to fix, and easy to disassemble for cleaning.

The floating support device is a key component, which is a self-adjustable support—pre-supported with a small force, and the small force is calculated according to F=P·S, where P is the compressed air source of the floating cylinder 42, which is less than 0.7MPa, S is the cross-sectional area of the piston of the floating cylinder 42; P and S are reasonably selected according to the gravity of the workpiece 1 itself, so that the floating balance weight 41 is slightly higher than the stop positioning device, and then the workpiece 1 is placed on the fixture , under the action of the gravity of the workpiece 1 itself or an external force, the support shaft 2 of the workpiece 1 is fixed on the stop positioning device, and then the hydraulic pressure of the floating oil cylinder 43 is used to hold the workpiece 1 tightly to support the workpiece 1 At the same time, ensure that the workpiece 1 to be processed is not deformed by force.

The floating support device can be replaced and adjusted according to the change of the shape of the workpiece 1 and the different requirements of machining. During the machining process of workpieces 1 of different shapes, the position, quantity, direction and form of support are required to be different. Therefore, the supporting direction and position of the floating balance weight 41 can be adjusted by increasing or decreasing the number of floating supporting devices.

Furthermore, by replacing and combining the floating support device, the floating support device can also be specially designed according to the special requirements of the workpiece 1 to be processed, so as to achieve the most reasonable support for the workpiece 1 to be processed, and avoid all the damage caused by the machining process. Disadvantages.

Furthermore, multiple floating support devices can be used at the same time to process parts that are thinner and longer, with softer materials and more irregular shapes; the floating support devices can support various orientations of the workpiece 1 to be processed; The support methods of the floating support device are diverse, and can be supported solely in the form of points, supported in the form of lines or supported in the form of surfaces alone; it can also be supported in the form of a combination of points, lines and surfaces.

The stop positioning device includes a supporting table 51, a first pressing block 52 and a second pressing block 53, the supporting table 51 is located below the supporting shaft 2, and the first pressing block 52 and the second pressing block 53 are located on both sides of the supporting shaft 2. side, and close to the support shaft 2, a space is formed by the support table 51, the first pressure block 52 and the second pressure block 53, which is used to fasten the support shaft 2, so as to fix the workpiece 1 to be processed.

Furthermore, the upper end of the second pressing block 53 is an inclined surface 531, which is inclined towards the direction of the support shaft 2. The inclined surface 531 cooperates with the supporting platform 51 and the first pressing block 52, which not only can better fix the supporting shaft 2 , and also lock the support shaft 2 in the limiting space.

The first briquetting block 52 is fixed on the support table 51 as an non-adjustable end; the second briquetting block 53 is hinged on the support table 51, the side of the upper end is tightly against the support shaft 2, and the lower end is connected with the driving member 55, As one end that can be adjusted, the support shaft 2 is clamped by adjusting the second pressing block 53 to make it fixed.

Furthermore, the first pressure block 52 is provided with an L-shaped structure, and the support shaft 2 is placed on the L-shaped structure, thereby raising the vertical height of the workpiece 1 to be processed, so that the upper and lower positions of the floating cylinder 42 and the floating oil cylinder 43 The adjustable range is larger.

Furthermore, the driving member 55 bears against the side of the lower end of the pressing block, and exerts a force to make the end move away from the support platform 51. At this time, due to the principle of leverage, the upper end of the second pressing block 53 will move closer to the supporting table. The direction rotation of the table top 51 can better clamp the support shaft 2 and keep it fixed; the driving member 55 is preferably driven by oil pressure, and of course it can also be driven by air pressure.

As shown in Figures 2 and 3, the floating support device also includes a floating balance weight seat 44, the floating balance weight seat 44 includes a first through hole 441 and an open slot 442, and the floating cylinder 42 is sleeved in the open slot In 442, the floating oil cylinder 43 is socketed in the first through hole 441, the floating balance weight 41 is placed on the upper surface of the floating balance weight seat 44, and when the floating cylinder 42 pre-presses the floating balance weight 41, the floating cylinder 42 top floating balance weight seat 44, the floating balance weight seat 44 drives the floating balance weight 41 to move up; side, so that both sides of the floating balance weight 41 act upward on the workpiece 1 to be processed, and finally the floating balance weight 41 hugs the workpiece 1 to be processed.

The stop positioning device and the floating support device are fixed on the workbench 3 by bolts, wherein the stop positioning device is provided with an adjustment hole 54 for adjusting the coaxiality.

The embodiments described above in conjunction with the accompanying drawings are only preferred implementations of the present utility model, rather than limiting the scope of protection of the present utility model. Any improvements made based on the spirit of the present utility model should fall within the scope of protection of the present utility model .

Claims (7)

1. a frock clamp for float support, for the fixedly sleeved workpiece to be added (1) of back shaft (2), is characterized in that: it comprises

Workbench (3), for ensureing the axiality of workpiece to be added (1);

Stop positioner, the axis along workpiece to be added (1) is symmetrically fixed on workbench (3), for stop positioning supports axle (2);

At least one floating support device, be positioned in the middle of stop fixture, and be fixed on workbench (3), described floating support device comprises floating equilibrium block (41), floating cylinder 42 and floating cylinder (43), described floating cylinder (43) is arranged on floating cylinder 42 both sides along the radial symmetric of workpiece to be added (1), described floating cylinder 42 is placed in floating equilibrium block (41) below, workpiece to be added (1) surface is close to for support floating balance weight (41), described floating cylinder (43) is placed in floating equilibrium block (41) below, workpiece to be added (1) surface is held tightly for support floating balance weight (41).

2. the frock clamp of a kind of float support according to claim 1, it is characterized in that: described stop positioner comprises supporting bable tops (51), the first briquetting (52) and the second briquetting (53), supporting bable tops (51) is positioned at the below of back shaft (2), first briquetting (52) and the second briquetting (53) are positioned at the both sides of back shaft (2), and are tight against back shaft (2).

3. the frock clamp of a kind of float support according to claim 2, is characterized in that: described first briquetting (52) is fixed on supporting bable tops (51).

4. the frock clamp of a kind of float support according to claim 2, is characterized in that: described second briquetting (53) is hinged on supporting bable tops (51), and one end is tight against back shaft (2), and the other end is connected with actuator (55).

5. the frock clamp of a kind of float support according to Claims 2 or 3, is characterized in that: described first briquetting (52) is provided with L-type structure.

6. the frock clamp of a kind of float support according to claim 2 or 4, is characterized in that: this end that described second briquetting (53) and back shaft (2) are tight against is inclined-plane (531), tilts to back shaft (2) direction.

7. the frock clamp of a kind of float support according to claim 1, it is characterized in that: described floating support device also comprises floating equilibrium block (44), described floating equilibrium block (44) comprises the first through hole (441) and open slot (442), described floating cylinder 42 is socketed in open slot (442), described floating cylinder (43) is socketed in the first through hole (441), and described floating equilibrium block (41) is placed in described floating equilibrium block (44) upper surface.