CN210209553U

CN210209553U - Hydraulic clamping positioner

Info

Publication number: CN210209553U
Application number: CN201920858163.1U
Authority: CN
Inventors: Chuanhong Wang; 汪传宏
Original assignee: Chongqing Honggang CNC Machine Tool Co Ltd
Current assignee: Chongqing Honggang CNC Machine Tool Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-03-31
Anticipated expiration: 2029-06-06

Abstract

The utility model relates to the technical field of machining equipment, in particular to a hydraulic clamping positioner, which comprises a guide rail arranged on a saddle body, wherein the side surface of the guide rail comprises a vertical part and two inclined parts, the vertical part is positioned between the two inclined parts, and the inclined part close to the bottom surface of the guide rail and the inclination angle between the bottom surface are acute angles; the clamping device is connected onto the guide rail in a sliding manner and comprises a support and a clamping block, the support is connected onto the guide rail in a sliding manner, an oil accumulation cavity communicated with a machine tool hydraulic system is formed in the support, and the clamping block is connected with the inner wall of the oil accumulation cavity in a sliding manner; the clamping block is provided with a vertical face and an inclined face, the vertical face is opposite to the vertical portion, and the inclined face is opposite to the inclined portion close to the bottom face of the guide rail. The utility model discloses in utilize grip block and guide rail surface contact to produce frictional force and realize quick braking, utilize the cooperation of inclined plane and rake simultaneously, make the guide rail can be by stable fixed, the problem that fixed guide's screw was not hard up easily when having solved among the prior art guide rail use.

Description

Hydraulic clamping positioner

Technical Field

The utility model relates to a machining equipment technical field, in particular to hydraulic clamping positioner.

Background

In the prior art, the machine tool with the inclined bed body layout has the advantages that when the machine tool is used, a saddle component arranged on a guide rail can be quickly braked according to instructions due to the requirement of a machining process, and the brake is realized through the rigidity of a motor driving a screw rod of the saddle in the existing structure. Along with the extension of service time, the rigidity of motor is difficult to guarantee the machining precision demand, often causes the product precision low, can't guarantee the required braking demand of instruction, and static rigidity is poor. Once the static rigidity of the motor is reduced, the whole saddle assembly is replaced, and the use cost of an enterprise is invisibly increased.

In order to solve the above problems, chinese patent application No. CN206366825U discloses a rapid braking type saddle, which comprises a saddle body, a central groove located on the saddle body, turret component guide rails symmetrically arranged on the saddle body by the central groove, slide blocks arranged at the bottom of the saddle body, and a hydraulic clamp connected with the guide rails in a sliding manner between the slide blocks. The hydraulic oil drives the brake in the hydraulic clamp holder to move, so that the brake realizes braking and positioning functions. Although the brake block can realize the braking and positioning functions, in the using process of the machine tool, the guide rail is subjected to reciprocating dynamic load due to the high-frequency reciprocating motion of the bed saddle, the guide rail is generally fixedly connected by screws, the screws are easy to loosen due to the dynamic load, the guide rail cannot be completely fixed on the bed saddle, and the processing precision of a workpiece is reduced in the long-term processing process of the machine tool.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a hydraulic pressure centre gripping locator solves the guide rail and in reciprocating use easy not hard up problem, promotes the machining precision of work piece.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a hydraulic clamping positioner comprises a guide rail arranged on a bed saddle body, wherein the side surface of the guide rail comprises a vertical part and two inclined parts, the vertical part is positioned between the two inclined parts, and the inclined angle between the inclined part close to the bottom surface of the guide rail and the bottom surface is an acute angle; the clamping device is connected onto the guide rail in a sliding manner and comprises a support and a clamping block, the support is connected onto the guide rail in a sliding manner, an oil accumulation cavity communicated with a machine tool hydraulic system is formed in the support, and the clamping block is connected with the inner wall of the oil accumulation cavity in a sliding manner; the clamping block is provided with a vertical face and an inclined face, the vertical face is opposite to the vertical portion, and the inclined face is opposite to the inclined portion close to the bottom face of the guide rail.

The principle of the utility model is that: the clamp holder is in the use with moving part (in this application, moving part can be the fixed station of fixed cutter) fixed connection together, the guide rail is used for leading the support, the hydraulic oil that has been opened on the support can let in lathe hydraulic system in the long-pending oil chamber, hydraulic oil promotes the grip block and slides in long-pending oil chamber to make the side of grip block and guide rail support tightly, utilize the frictional force between grip block and the guide rail, realize the quick braking with clamp holder fixed connection's moving part. Meanwhile, when the clamping block is abutted against the rail, the vertical surface of the clamping block abuts against the vertical part of the guide rail, the inclined surface of the clamping block abuts against the inclined part of the guide rail, and the vertical surface abuts against the vertical part, so that the clamping block is mainly subjected to the friction force of the guide rail to generate a braking action; when the inclined plane offsets with the rake, when there is mutual friction between clamping block and the guide rail, when the clamping block is abutting with the guide rail side, the inclined plane exerts pressure on the rake, because the inclined plane is abutting with the rake that is close to the guide rail bottom surface, and the rake that is close to the guide rail bottom surface is the acute angle with the inclination between the bottom surface, make the bottom of the rake that is close to the guide rail bottom surface bulge to the guide rail outside and be the slope form, therefore receive the pressure effect back on the rake, this pressure produces a component in the direction of perpendicular to guide rail bottom surface, this component makes guide rail and saddle body mutually abut, thereby guarantee in reciprocating braking process, the guide rail can be fixed connection with the saddle body all the time, prevent effectively that the guide rail from becoming flexible, avoid the machining precision of work piece to receive the influence.

The scheme has the advantages that:

1. can effectively guarantee the machining precision: compared with the prior art in which the guide rail is influenced by the dynamic load of machine tool machining and the sliding block sliding back and forth, the screw for fixing the guide rail is easy to loosen so that the guide rail generates small displacement, and for the precision machining of the machine tool, the small displacement of the guide rail can greatly influence the machining precision of the machine tool, and the main reason for causing the screw to loosen is that the guide rail is continuously acted on the guide rail in the back and forth movement of the guide rail upper sliding block and the clamping block, and the guide rail transmits acting force to the screw, so that the screw is finally loosened. In this application, the grip block includes vertical face and inclined plane, when utilizing the grip block to brake, the effort of vertical face and the inclined plane produce with the vertical face effect the same power of direction enable the quick braking of moving part, and simultaneously, the component force along the vertical direction of guide rail that the inclined plane produced can compress tightly the guide rail on the fixed terminal surface of guide rail, thereby make the guide rail can remain throughout with the saddle body and support tight state in the grip block braking, fixed guide's screw can not become flexible because of the guide rail atress, make the guide rail can be stabilized fixed, guarantee the machining precision of lathe.

2. The structure is simple: the clamping device is arranged on the existing guide rail, the clamping braking is realized without excessively increasing the structure, the structure is simple, the condition that the size of the workbench needs to be increased without prolonging the guide rail is avoided, the cost is low, and the clamping device is easy to realize.

Furthermore, the number of the oil accumulation cavities is two, and the two oil accumulation cavities are symmetrically distributed on two sides of the guide rail.

Compared with the oil collecting cavity arranged on one side of the guide rail, when the guide rail slides and rubs relative to the clamping block, the guide rail is unevenly stressed, so that the single side of the guide rail is abraded to influence the precision of the guide rail. All be equipped with the oil collecting chamber in the both sides of guide rail in this scheme, and two oil collecting chamber symmetric distribution in the both sides of guide rail, when support and guide rail relative slip, the guide rail both sides all receive the effort of grip block, and the guide rail atress is even, and the operation is stable.

Further, the inner side of the oil accumulation cavity is provided with a boss, and the clamping block is provided with a matching part matched with the boss.

The boss is arranged on the inner side of the oil collecting cavity, the clamping block is provided with a matching part matched with the boss, and after the boss is arranged, the clamping block can be prevented from sliding out of the oil collecting cavity due to the limitation of the boss, so that the clamping block can slide out of the oil collecting cavity when the support is installed on the guide rail and cannot be installed smoothly; after setting up the boss simultaneously, the boss can carry out certain spacing and block to the grip block, prevents that the grip block from too big and causing guide rail and grip block wearing and tearing seriously to the effort of guide rail.

Furthermore, the oil accumulation cavity is communicated with the support, and a baffle plate for sealing the oil accumulation cavity is fixedly connected to the support.

Compared with the oil collecting cavity which is a blind hole-shaped concave cavity, the boss for limiting the clamping block to slide out of the oil collecting cavity is arranged on the inner side of the oil collecting cavity, and the boss has a limiting effect on the clamping block, so that the clamping block cannot be smoothly installed in the oil collecting cavity. In the scheme, the oil collecting cavity penetrates through the support, and the support is fixedly connected with the baffle for sealing the oil collecting cavity; simultaneously, behind the installation baffle, if need clear up the collection oil intracavity because during the metal powder that the friction produced, only need dismantle the baffle and can accomplish the clearance, and need not dismantle the clearance with whole support, simple and convenient.

Furthermore, an elastic reset piece is fixedly connected between the baffle plate and the clamping block.

Compare in the grip block at the intracavity free slip of gathering oil, the grip block slides fast under the oil pressure effect for the grip block causes great clash to baffle and boss in the oil gathering chamber comes back and goes back the motion, makes baffle or boss damage. In this scheme fixedly connected with elasticity piece that resets between baffle and grip block, in the grip block makes a round trip to slide, elasticity piece that resets can provide certain buffering for the grip block, all plays certain guard action to baffle and boss.

Furthermore, the quantity that the elasticity resets is two, and two elasticity reset the piece and transversely distribute side by side.

The quantity that elasticity resets is two, and two elasticity resets and transversely distribute side by side, and it is more even to make the grip block receive the cushion effect that elasticity reset, and the grip block can slide more steadily.

Further, quenching layers are arranged on the vertical surface and the inclined surface of the clamping block.

All be equipped with the quenching layer on the vertical face of grip block and the inclined plane, promote the wear resistance of grip block, make the grip block can long-term stable work, prolong the life of grip block.

Furthermore, two sliding blocks are connected on the guide rail in a sliding mode, and the clamping block is located between the two sliding blocks.

Sliding connection has two sliders on the guide rail, and two sliders provide the support to the moving part, make the moving part follow slider steady motion, because the grip block plays supplementary quick braking effect, and the slider plays the effect of direction, sets up the grip block between two sliders rather than setting up the outside at two sliders, is favorable to the grip block to transmit the clamping-force to the moving part fast to realize quick braking.

Furthermore, the inner side of the baffle and the inner side of the clamping block are fixedly connected with sealing gaskets.

The sealing gaskets are fixedly connected on the inner sides of the baffle and the inner sides of the clamping blocks, so that hydraulic oil in the oil collecting cavity can be effectively prevented from leaking out of the oil collecting cavity under the action of high pressure, the hydraulic oil is wasted, meanwhile, the pollution of a guide rail is caused, and negative effects are caused to machine tool machining.

Drawings

Fig. 1 is a schematic view of a first embodiment of a hydraulic clamping positioner according to the present invention.

Fig. 2 is an exploded view of a first embodiment of a hydraulic clamping positioner according to the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 1.

Fig. 4 is a schematic diagram of a second embodiment of a hydraulic clamping positioner according to the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the oil collecting device comprises a guide rail 1, a sliding block 2, a vertical part 3, a first inclined part 4, a support 5, a clamping block 6, an oil collecting cavity 7, a vertical surface 8, an inclined surface 9, a boss 10, a matching part 11, a baffle 12, a compression spring 13 and a sealing gasket 14.

The first embodiment is as follows:

embodiment one is basically as shown in fig. 1, fig. 2 and fig. 3, a hydraulic clamping positioner, including the guide rail 1 fixedly connected to the bed saddle body by the screw, two sliders 2 are connected to the guide rail 1 in a sliding manner along the long side direction of the guide rail 1, and the side surface of the guide rail 1 includes a vertical portion 3 and two inclined portions, the inclined portion near the bottom surface of the guide rail 1 is a first inclined portion 4, the other inclined portion is a second inclined portion, the inclination angle between the first inclined portion 4 and the bottom surface of the guide rail 1 is 45 °, the vertical portion 3 is located between the first inclined portion 4 and the second inclined portion, and smooth transition is formed between the vertical portion 3 and the first inclined portion 4 and the second inclined portion, a clamp is connected to the guide rail 1 in a sliding manner along the long side direction of the guide rail 1.

As shown in fig. 1, the holder comprises a support 5 and a holding block 6, a sliding groove matched with the guide rail 1 is formed in the support 5, the support 5 can slide along the long side direction of the guide rail 1, an oil collecting cavity 7 communicated with a machine tool hydraulic system is formed in the support 5, in combination with fig. 3, the oil collecting cavity 7 is arranged along the direction perpendicular to the vertical part 3 of the guide rail 1, the number of the oil collecting cavities is two, the two oil collecting cavities 7 are communicated with the support 5, and the holding block 6 is connected in the oil collecting cavity 7 in a sliding manner along the direction perpendicular to the vertical part 3 of the guide rail 1.

As shown in fig. 3, the holding block 6 includes a vertical surface 8 and an inclined surface 9, the vertical surface 8 can be in surface contact with the vertical portion 3 of the guide rail 1 when the holding block 6 is laterally slid in the oil collecting chamber 7, and the inclined surface 9 is just in surface contact with the first inclined portion 4 when the vertical surface 8 is in contact with the vertical portion 3; after the clamping block 6 is abutted against the guide rail 1, the clamping block 6 can generate friction with the side surface of the guide rail 1 to generate a clamping effect, so that the clamping device which moves rapidly together with the moving part is braked rapidly, and the moving part is braked rapidly. The surface that the grip block 6 contacts with the guide rail 1 is set as the aim of the vertical surface 8 and the inclined surface 9: when the vertical surface 8 and the vertical part 3 are abutted tightly and relatively slide, the vertical part 3 is pressed by the vertical surface 8, and the first pressure vertically acts on the vertical part 3, so that the clamping block 6 is subjected to friction force generated between the vertical part 3 and the vertical surface 8 and opposite to the sliding direction of the clamping block 6; when the inclined surface 9 and the first inclined part 4 rub against each other, the clamping block 6 is subjected to friction force in the opposite sliding direction, meanwhile, due to the fact that the inclined surface 9 has a certain inclination angle, the acting force of the inclined surface 9 acting on the first inclined part 4 can generate a vertical downward component force to the first inclined part 4, the vertical downward component force can enable the guide rail 1 and the saddle body to be attached tightly, and therefore the situation that in the braking process of the clamping block 6, screws for fixing the guide rail 1 are loosened due to the fact that the guide rail 1 is subjected to braking load in the continuous braking process of the clamping block 6 is avoided, the situation that deviation occurs in the position of the guide rail 1 is avoided, and machining accuracy and stable operation of the clamping device are guaranteed.

As shown in fig. 3, a boss 10 is integrally formed on the inner side of the oil collecting cavity 7, a matching part 11 which can be matched with the boss 10 is integrally formed on the clamping block 6, and after the boss 10 is arranged, the clamping block 6 can be prevented from generating large impact on the guide rail 1, so that the vibration generated by clamping and braking can be reduced, and the machining precision of a machine tool can be ensured; meanwhile, the baffle 12 is fixedly connected to the outer side of the oil collecting cavity 7 through screws, and an elastic reset piece is welded between the baffle 12 and the clamping block 6, in the embodiment, the elastic reset piece is preferably a compression spring 13, the compression spring 13 can provide a buffering effect in the sliding process of the clamping block 6, and the baffle 12 or the boss 10 is prevented from being damaged due to the fact that the sliding speed of the clamping block 6 is too high. In order to prevent the hydraulic oil in the oil collecting cavity 7 from leaking or overflowing under the action of high pressure, the inner wall of the stop block and one side of the clamping block 6 welded with the compression spring 13 are both bonded with sealing gaskets 14; meanwhile, in order to ensure that the clamping block 6 and the guide rail 1 can be smoothly clamped and braked for a long time, quenching layers are arranged on the vertical surface 8 and the inclined surface 9 so as to enhance the wear resistance of the friction surface.

The specific implementation process is as follows:

when a machine tool needs to be machined, the clamp holder is connected to the guide rail 1, the oil collecting cavity 7 is communicated with a hydraulic system of the machine tool, when braking is needed, the machine tool controls the oil collecting cavity 7 to be filled with oil, the oil pressure in the oil collecting cavity 7 is increased, the clamping block 6 slides to the guide rail 1, the vertical surface 8 of the clamping block 6 is tightly abutted to the vertical part 3, the inclined surface 9 is tightly abutted to the first inclined part 4, when the clamping block 6 slides relative to the guide rail 1, large friction force is generated between the vertical surface 8 and the vertical part 3 and between the inclined surface 9 and the first inclined part 4, the clamping block 6 is quickly stopped to move due to the large friction force, the support 5 is also quickly stopped to move under the acting force of the clamping block 6, and therefore quick braking of a moving part fixedly connected with the support 5 is achieved; meanwhile, in the interaction process of the inclined surface 9 and the first inclined part 4, the first inclined part 4 can receive a component force perpendicular to the sliding direction of the clamping block 6, the component force can enable the guide rail 1 and the saddle body to be attached to each other, and the looseness of screws for fixing the guide rail 1 due to stress is avoided, so that the guide rail 1 can be stably fixed all the time, and the machining precision of a machine tool is guaranteed for a long time.

Example two:

the embodiment is basically as shown in fig. 4, and the difference between the second embodiment and the first embodiment is as follows: the two oil collecting cavities 7 are mutually communicated, when an oil pressure system of the machine tool supplies oil to the oil collecting cavities 7, the two oil collecting cavities 7 are simultaneously supplied with oil, so that the two clamping blocks 6 are ensured to synchronously move under the action of oil pressure, the two sides of the guide rail 1 are ensured to be simultaneously stressed, and the braking action of the clamp holder is more stable.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures or features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a hydraulic pressure centre gripping locator, is including locating the guide rail on the bed saddle body, its characterized in that: the side surface of the guide rail comprises a vertical part and two inclined parts, the vertical part is positioned between the two inclined parts, and the inclined angle between the inclined part close to the bottom surface of the guide rail and the bottom surface is an acute angle; the clamping device is connected onto the guide rail in a sliding mode and comprises a support and a clamping block, the support is connected onto the guide rail in a sliding mode, an oil accumulation cavity communicated with a machine tool hydraulic system is formed in the support, and the clamping block is connected with the inner wall of the oil accumulation cavity in a sliding mode; the clamping block is provided with a vertical surface and an inclined surface, the vertical surface is opposite to the vertical part, and the inclined surface is opposite to the inclined part close to the bottom surface of the guide rail.

2. A hydraulic clamp positioner according to claim 1, wherein: the number of the oil accumulation cavities is two, and the two oil accumulation cavities are symmetrically distributed on two sides of the guide rail.

3. A hydraulic clamp positioner according to claim 2, wherein: the inner side of the oil accumulation cavity is provided with a boss, and the clamping block is provided with a matching part which can be matched with the boss.

4. A hydraulic clamp positioner according to claim 3, wherein: the oil accumulation cavity is communicated with the support, and a baffle plate for sealing the oil accumulation cavity is fixedly connected to the support.

5. A hydraulic clamp positioner according to claim 4, wherein: and an elastic reset piece is fixedly connected between the baffle plate and the clamping block.

6. A hydraulic clamp positioner according to any of claims 1 to 5, wherein: quenching layers are arranged on the vertical surface and the inclined surface of the clamping block.

7. A hydraulic clamp positioner according to claim 6, wherein: the guide rail is connected with two sliding blocks in a sliding mode, and the clamping block is located between the two sliding blocks.

8. A hydraulic clamp positioner according to claim 5, wherein: the inner side of the baffle and the inner side of the clamping block are fixedly connected with sealing gaskets.