CN206129781U - Rotary clamping hydraulic means - Google Patents

Abstract

The utility model discloses a rotary clamping hydraulic means, main content is: install in the mounting hole of clamp plate on the piston rod top, the round pin axle is installed in the cylinder hole of clamp plate, be equipped with positioning groove on the uide bushing bottom surface, the cylinder body is installed in the positioning groove of uide bushing, the cylinder body top surface is equipped with the annular groove, pipe joints installs in the mounting hole on uide bushing left end face, the piston is installed on the bottom surface of piston rod, the support ring is installed in the annular groove of piston, plastic plug installs in the radial hole of piston, the guiding axle is installed in the radial hole of piston, the guiding axle afterbody is installed in the recess of guide pillar, install on the bottom surface of piston on the guide pillar top, the positioning disk is installed on the guide pillar and the positioning disk is located the cylinder body, install the second sealing washer between the outer face of cylinder of positioning disk hole and guiding axle, install the third sealing washer between the inner wall of the outer face of cylinder of positioning disk and cylinder body, lower cover fixed mounting is on the bottom surface of cylinder body.

Description

A rotary clamping hydraulic device

technical field

The utility model relates to the technical field of rotary clamping, in particular to a rotary clamping hydraulic device.

Background technique

Most of the rotary clamping fixtures on the market use pneumatic clamping, and hydraulic clamps are only used in heavy-duty cutting or on some machine tools with hydraulic systems. However, due to the compressibility of air and low working pressure, the pneumatic clamp has a large volume and poor clamping rigidity (this problem is particularly prominent in the case of limited space on the machine table or in heavy-duty cutting). In addition, there are also mechanical mechanisms for rotary clamping, but due to the limitations of the mechanical mechanism itself (some mechanical mechanisms have dead spots), when the mechanical mechanism is applied, the next cycle cannot be entered during clamping, which affects the correct operation and action of the mechanism. . Moreover, the problems of oil leakage, fast wear, low degree of automation, complex mechanism and high cost are prone to occur.

Utility model content

The technical problem to be solved by the utility model is to aim at the deficiencies in the above-mentioned prior art, and disclose a rotary clamping hydraulic device, which adopts the principle of combining a hydraulic system and a mechanical mechanism, and makes up for the deficiencies of a single system or structure. In principle, the smooth and reliable action of the clamping device is guaranteed.

The technical solution adopted by the utility model to solve the technical problem is: a rotary clamping hydraulic device, including a piston rod, a pressure plate, a pin shaft, a first sealing ring, a guide sleeve, a tubing joint, a support ring, a plastic plug, and a guide post , the second sealing ring, the lower cover, the positioning plate, the guide shaft, the third sealing ring, the cylinder body, the piston, the fourth sealing ring and the fifth sealing ring; the top end of the piston rod is fixed and installed in the mounting hole of the pressure plate by screws , the pin shaft is installed in the cylindrical hole of the pressure plate, the bottom surface of the guide sleeve is provided with a positioning groove, the cylinder body is installed in the positioning groove of the guide sleeve and the cylinder body is fixed on the guide sleeve by screws, so The first sealing ring and the fifth sealing ring are installed between the outer cylindrical surface of the piston rod and the cylindrical hole of the guide sleeve, the top surface of the cylinder body is provided with an annular groove, and the fourth sealing ring is installed on the cylinder body In the annular groove and the top surface of the fourth sealing ring is against the top surface of the positioning groove of the guide sleeve, the oil pipe joint is installed in the installation hole on the left end surface of the guide sleeve, and the piston is fixedly installed on the bottom surface of the piston rod And the piston is located in the cylinder, the outer cylindrical surface of the piston is provided with an annular groove, the support ring is installed in the annular groove of the piston, the plastic plug is installed in the radial hole of the piston, the guide shaft Installed in the radial hole of the piston and the plastic plug is on the top surface of the guide shaft head, the tail of the guide shaft is installed in the groove of the guide post, and the top of the guide post is installed on the bottom surface of the piston. The positioning disc is installed on the guide post and the positioning disc is located in the cylinder body. A second sealing ring is installed between the inner hole of the positioning disc and the outer cylindrical surface of the guide shaft. Between the outer cylindrical surface of the positioning disc and the inner wall of the cylinder body A third sealing ring is installed, and the lower cover is fixedly installed on the bottom surface of the cylinder body.

As a preferred embodiment of the present invention, the guide sleeve is provided with an oil inlet hole, and the oil inlet hole on the cylinder body communicates with the oil inlet hole of the guide sleeve.

As a preferred embodiment of the present utility model, a radial sealing ring is installed between the outer surface of the piston and the inner wall of the cylinder.

As a preferred embodiment of the present invention, the two ends of the guide post are provided with short straight grooves, and the middle part of the guide post is provided with a spiral groove.

There is a groove on the guide post (composed of short straight grooves at both ends and a spiral groove in the middle, the length of the straight groove is about greater than the diameter of the guide shaft), the piston moves in a straight line relative to the guide post, and the guide shaft fixed in the lower end hole of the piston rotates around The guide column makes micro-distance linear motion-rotation-micro-distance linear motion, thereby driving the overall piston rod to perform micro-distance linear motion-rotation-micro-distance linear motion, and realizes the loosening and rotating motion of the clamp, which ensures that the structure is not dead in principle. Point, reliable operation.

The support ring is set in the support ring groove, so that the bearing of the guide shaft to the radial force is increased, the cylinder can be better kept stable under pressure, and the piston rod is not easy to be unstable and bent, which fundamentally solves the problem of plastic plugs. At the same time, the deformation of the cylinder caused by plastic particles ensures the stability of the clamping mechanism, improves the overall service life of the clamping cylinder, and greatly improves the operating safety, providing a guarantee for the realization of safe production.

Compared with the prior art, the utility model has the following advantages:

The utility model discloses a rotary clamping hydraulic device, which adopts the principle of combining the hydraulic system and the mechanical mechanism, makes up for the deficiency of a single system or structure, and ensures the smooth and reliable action of the clamping device in principle; at the same time, through The use of an elliptical outer circle guide shaft enhances the guiding performance, avoids inflexibility or stagnation when moving in the spiral groove, and greatly increases the service life.

Description of drawings

Fig. 1 is a schematic structural view of a specific embodiment of the present invention.

Explanation of reference signs:

1: Piston rod, 2: Pressure plate, 3: Pin shaft, 4: First sealing ring, 5: Guide sleeve, 6: Oil pipe joint, 7: Support ring, 8: Plastic plug, 9: Guide post, 10: Second Sealing ring, 11: lower cover, 12: positioning plate, 13: guide shaft, 14: third sealing ring, 15: cylinder body, 16: piston, 17: fourth sealing ring, 18: fifth sealing ring.

detailed description

Describe the specific implementation of the utility model below in conjunction with accompanying drawing and embodiment:

It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the scope of the utility model. The limited conditions of implementation, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and the purpose that the utility model can produce, should still fall within the technology disclosed in the utility model. within the scope of the content.

At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

As shown in Figure 1, it shows a specific embodiment of the utility model; as shown in the figure, a rotary clamping hydraulic device disclosed in the utility model includes a piston rod 1, a pressure plate 2, a pin Seal ring 4, guide sleeve 5, oil pipe joint 6, support ring 7, plastic plug 8, guide post 9, second seal ring 10, lower cover 11, positioning plate 12, guide shaft 13, third seal ring 14, cylinder body 15. Piston 16, fourth sealing ring 17 and fifth sealing ring 18; the top end of the piston rod 1 is fixed in the installation hole of the pressure plate 2 by screws, and the pin shaft 3 is installed in the cylindrical hole of the pressure plate 2. The bottom surface of the guide sleeve 5 is provided with a positioning groove, the cylinder body 15 is installed in the positioning groove of the guide sleeve 5 and the cylinder body 15 is fixed on the guide sleeve 5 by screws, and the outer cylindrical surface of the piston rod 1 and the The first sealing ring 4 and the fifth sealing ring 18 are installed between the cylindrical holes of the guide sleeve 5, the top surface of the cylinder body 15 is provided with an annular groove, and the fourth sealing ring 17 is installed in the annular groove of the cylinder body 15. and the top surface of the fourth sealing ring 17 is on the top surface of the positioning groove of the guide sleeve 5, the oil pipe joint 6 is installed in the installation hole on the left end surface of the guide sleeve 5, and the piston 16 is fixedly installed on the piston rod. 1 and the piston 16 is located in the cylinder 15, the outer cylindrical surface of the piston 16 is provided with an annular groove, the support ring 7 is installed in the annular groove of the piston 16, and the plastic plug 8 is installed in the piston In the radial hole of 16, the guide shaft 13 is installed in the radial hole of the piston 16 and the plastic plug 8 is on the top surface of the head of the guide shaft 13, and the tail of the guide shaft 13 is installed in the concave hole of the guide post 9. In the groove, the top of the guide post 9 is installed on the bottom surface of the piston 16, the positioning disc 12 is installed on the guide post 9 and the positioning disc 12 is located in the cylinder body 15, and the inner hole of the positioning disc 12 is connected to the outside of the guide shaft 13. A second sealing ring 10 is installed between the cylindrical surfaces, a third sealing ring 14 is installed between the outer cylindrical surface of the positioning plate 12 and the inner wall of the cylinder body 15, and the lower cover 11 is fixedly installed on the bottom surface of the cylinder body 15 .

Preferably, the guide sleeve 5 is provided with an oil inlet hole, and the oil inlet hole on the cylinder body 15 communicates with the oil inlet hole of the guide sleeve 5 .

Preferably, a radial sealing ring is installed between the outer surface of the piston 16 and the inner wall of the cylinder 15 .

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiment. Make various changes.

Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the invention is not limited to specific embodiments, and the scope of the invention is defined by the appended claims.

Claims (4)

1. It is 1. a kind of to rotate clamping unit, it is characterised in that：Including piston rod, pressing plate, bearing pin, the first sealing ring, fairlead, Oil connection, support ring, plastic plug, guide pillar, the second sealing ring, lower cover, positioning disk, the axis of guide, the 3rd sealing ring, cylinder body, work Plug, the 4th sealing ring and the 5th sealing ring；The piston rod top is fixedly mounted in the installing hole of pressing plate by screw, described Bearing pin is arranged in the cylindrical hole of pressing plate, and the fairlead bottom surface is provided with detent, and the cylinder body is arranged on fairlead In detent and cylinder body is fixed by screws on fairlead, the external cylindrical surface of the piston rod and the cylindrical hole of fairlead it Between the first sealing ring and the 5th sealing ring are installed, the cylinder deck is provided with annular groove, and the 4th sealing ring is arranged on In the annular groove of cylinder body and the 4th sealing ring top surface is withstood on the top surface of fairlead detent, the oil connection is arranged on In installing hole on fairlead left side, the piston is fixedly mounted on the bottom surface of piston rod and piston is located in cylinder body, institute State outside piston cylinder and be provided with annular groove, the support ring is arranged in the annular groove of piston, and the plastic plug is installed In the radial hole of piston, the axis of guide is arranged in the radial hole of piston and plastic plug withstands on the top surface for being oriented to shaft head On, the axis of guide afterbody is arranged in the groove of guide pillar, and the guide pillar top is arranged on the bottom surface of piston, the positioning disk On guide pillar and positioning disk be located at cylinder body in, be provided with second between the positioning disk endoporus and axis of guide external cylindrical surface close Seal, is provided with the 3rd sealing ring between the positioning disk external cylindrical surface and the inwall of cylinder body, the lower cover is fixedly mounted on cylinder On the bottom surface of body.
2. 2. one kind as claimed in claim 1 rotates clamping unit, it is characterised in that：The fairlead is provided with oil-feed Hole, the fuel feed hole on cylinder body is communicated with the fuel feed hole of fairlead.
3. 3. one kind as claimed in claim 1 rotates clamping unit, it is characterised in that：The outer surface and cylinder body of the piston Radial direction seal ring is installed between inwall.
4. 4. one kind as claimed in claim 1 rotates clamping unit, it is characterised in that：Both ends are provided with short on the guide pillar Straight trough, guide pillar middle part is provided with helicla flute.