CN202271277U - Clamping device for crankshaft grinding machine workpiece - Google Patents

Abstract

The utility model provides a clamping device for a crankshaft grinding machine workpiece. The clamping device has the advantages that the positioning center line movement of the workpiece can be prevented, and the workpeice indexing precision cannot be damaged. The clamping device comprises a workpiece press plate, wherein a cavity is arranged in the workpiece press plate, and a positioning block is fixedly arranged on the inner side of the workpiece press plate. The clamping device is characterized in that a press block is movably arranged in a position of the inner side of the workpiece press plate corresponding to the positioning block, and a spherical screw passes through the workpiece press plate to be connected with the press block through a connecting plate.

Description

Clamping device for workpiece of crankshaft grinder

technical field

The utility model relates to the technical field of grinding machine components, in particular to a clamping device for crankshaft grinding machine workpieces. the

Background technique

See Fig. 1, the clamping device of existing crankshaft grinding machine workpiece, it comprises upper pressing plate 1, lower pressing plate 2, upper pressing plate 1 and lower pressing plate 2 form a cavity, upper pressing plate 1, lower pressing plate 2 are connected by bolts and nuts, upper pressing plate 1 is fixed with a pressing block 3, and the lower pressing plate 2 is fixed with a positioning block 4. When the workpiece 6 is indexed, the nuts 5 will be tightened respectively, so that the upper pressing plate 1 drives the pressing block 3 to compress the workpiece 6. However, in the process of tightening the four nuts, due to the different tightening forces and not tightening at the same time, it is easy to cause the movement of the center line of the workpiece positioning, which directly affects the indexing accuracy of the workpiece. the

Contents of the invention

In view of the above problems, the utility model provides a clamping device for a workpiece of a crankshaft grinder, which can prevent the movement of the positioning center line of the workpiece and will not damage the indexing accuracy of the workpiece.

The technical solution is as follows: a clamping device for a workpiece of a crankshaft grinder, which includes a workpiece pressing plate, a cavity is provided in the workpiece pressing plate, and a positioning block is fixed on the inner side of the workpiece pressing plate, and it is characterized in that: the inner side of the workpiece pressing plate A pressing block is movably arranged at a position corresponding to the positioning block, and the spherical screw passes through the workpiece pressing plate and connects the pressing block through a connecting plate.

It is further characterized in that: the workpiece pressing plate includes an upper pressing plate and a lower pressing plate, the upper pressing plate and the lower pressing plate are fixedly connected by fixing bolts to form a cavity, the inner side of the lower pressing plate is fixed with a positioning block, the upper pressing plate A pressing block is movable on the inner side of the pressing plate at a position corresponding to the positioning block; the cavity of the pressing plate is a circular cavity; the number of fixing bolts is four.

In the above structure of the utility model, the spherical screw is used to connect the pressing block. Due to the universality of the spherical screw, adjusting the spherical screw pressing block will not generate eccentric force when pressing the workpiece, and the indexing accuracy will not be damaged.

Description of drawings

Fig. 1 is the structural representation of the clamping device of existing crankshaft grinder workpiece;

Fig. 2 is a structural schematic diagram of the clamping device for the workpiece of the crankshaft grinder of the present invention.

Detailed ways

See Fig. 2, the utility model is a crankshaft grinder workpiece clamping device, which includes an upper platen 1 and a lower platen 2, the upper platen 1 and the lower platen 2 are connected by four fixing bolts 6 and form a circular platen cavity 8 , the inner side of the lower pressing plate 2 is fixed with a positioning block 4, and the position corresponding to the positioning block 4 on the inner side of the upper pressing plate 1 is movable to be provided with a pressing block 3, and the spherical screw 5 passes through the upper pressing plate 1 and connects the pressing block 3 through the connecting plate 7.

When the workpiece is indexed by 9, turn the spherical screw 5 to make the pressure block 3 compress the workpiece. Since the spherical screw is universal, the pressure block will not generate eccentric force when pressing the workpiece, and will not damage the workpiece. The indexing accuracy. the

Claims (4)

1. the clamping device of a crankshaft grinding machine workpiece; It comprises the workpiece pressing plate; In the said workpiece pressing plate cavity is arranged; Said workpiece pressing plate inboard is fixed with locating piece, it is characterized in that: said workpiece pressing plate is movably set with briquetting on the inboard position corresponding with said locating piece, and sphere screw passes said workpiece pressing plate and connects said briquetting through connecting plate.

2. the clamping device of a kind of crankshaft grinding machine workpiece according to claim 1; It is characterized in that: said workpiece pressing plate comprises top board and lower platen; Said top board and said lower platen are fixedly connected to form a cavity through set bolt; Said lower platen inboard is fixed with locating piece, and said top board is movably set with briquetting on the inboard position corresponding with said locating piece.

3. the clamping device of a kind of crankshaft grinding machine workpiece according to claim 1 and 2 is characterized in that: said workpiece pressing plate cavity is a circular cavity.

4. the clamping device of a kind of crankshaft grinding machine workpiece according to claim 2 is characterized in that: said set bolt is four.

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