CN221210731U - Reducing duplex position centre gripping frock - Google Patents

Abstract

The utility model relates to a reducing double-station clamping tool, which comprises a bottom plate arranged on a numerical control machining center, wherein a driving mechanism, a first clamping assembly and a second clamping assembly are arranged on a mounting surface of the bottom plate in a partition mode, the two groups of the first clamping assembly and the second clamping assembly are symmetrically distributed along the axial direction of an output shaft of the driving mechanism, and the first clamping assembly and the second clamping assembly are respectively in transmission connection with the middle section and the tail end of the output shaft in a mode of synchronously opening and closing along with the axial translation of the output shaft, so that the working positions of the first clamping assembly and the second clamping assembly are changed. The multi-station clamping fixture can carry out multi-station clamping on the combined workpiece with at least two accessories movably assembled together, and solves the problems that the existing single-motion clamping fixture cannot carry out multi-station limiting clamping on the two plug bush combined workpieces movably assembled together, so that the processing quality is reduced and the processing position cannot be accurately positioned.

Description

Reducing duplex position centre gripping frock

Technical Field

The utility model relates to the technical field of fixtures for special-shaped combined workpieces, in particular to a double-station clamping fixture with different diameters.

Background

The numerical control milling machine is automatic processing equipment developed on the basis of a general milling machine. Numerically controlled milling machines with numerically controlled milling cutters are also known as machining centers; the workpiece clamping mechanism of the existing machining center generally clamps the front side and the rear side of a workpiece only. The numerical control milling cutter is also called a numerical control fly cutter, is a rotary cutter which is used for milling and has one or more cutter teeth, and when in operation, each cutter tooth cuts off the allowance of a workpiece intermittently in sequence; the fly cutter mainly processes steps, grooves, forming surfaces, cutting workpieces and the like, has a micro-groove structure which is directly processed into submicron or even nanometer precision under the condition of omitting later polishing, and can process a relatively complex object surface structure.

However, the existing conventional clamping tool can clamp and limit workpieces with special profiles and different section diameters or section sizes in a special way, but due to the singleness of the clamping movement path and the distance, the existing conventional clamping tool can only stably clamp the integrated workpieces, can not effectively and stably limit and clamp a combined workpiece formed by a plurality of fittings which are movably assembled together, can only limit and clamp a mechanism on a single space, can not synchronously clamp the fittings with different sizes or diameters, and can effectively maintain the relative position relationship between the fittings of the combined workpiece constructed by the movable assembly while limiting the position to be processed of the combined workpiece. The existing clamping tool cannot adaptively clamp complex assembled workpieces, the practicality cannot be improved, and the processing quality of the workpieces is reduced or the processing position cannot be accurately positioned by a processing center.

Furthermore, there are differences in one aspect due to understanding to those skilled in the art; on the other hand, as the inventors studied numerous documents and patents while the present utility model was made, the text is not limited to details and contents of all that are listed, but it is by no means the present utility model does not have these prior art features, the present utility model has all the prior art features, and the applicant remains in the background art to which the rights of the related prior art are added.

Disclosure of utility model

The utility model aims to provide a multi-station clamping tool for multi-station clamping of combined workpieces with at least two fittings movably assembled together, which solves the problems that the existing single-motion clamping tool cannot perform multi-station limiting clamping on two sleeve combined workpieces movably assembled together, so that the two fittings possibly move relatively in the clamped process or in the clamped state, and the relative positions of the two fittings with different outline or section sizes cannot be effectively limited, and the processing quality is reduced or the processing positions cannot be accurately positioned.

The technical scheme adopted by the utility model is as follows: the utility model provides a reducing duplex position centre gripping frock, includes the bottom plate of installing on numerical control machining center, the subregion is provided with actuating mechanism, first clamping component and second clamping component on the installation face of bottom plate, wherein, two sets of first clamping component and second clamping component are all followed the axial symmetry of actuating mechanism's output shaft distributes, and first clamping component and second clamping component are according to can follow the axial translation of output shaft and the mode of synchronous emergence open and shut motion respectively with the middle section and the terminal transmission of output shaft are connected, thereby change first clamping component and second clamping component's working position.

According to a preferred embodiment, the driving mechanism comprises the output shaft, a guide sleeve, a connector and a hydraulic telescopic unit, wherein the guide sleeve and the hydraulic telescopic unit are detachably arranged on the bottom plate, and the output shaft is movably penetrated in the guide sleeve so as to limit the movement direction of the output shaft for axial translation; the power input end of the output shaft is connected with the hydraulic telescopic unit through the connector, so that the hydraulic telescopic unit is driven to axially translate, and the first clamping assembly and the second clamping assembly are driven to change in station.

According to a preferred embodiment, a rotating shaft is arranged on the shaft rod in the middle section of the output shaft in a penetrating manner, and two ends of the rotating shaft are respectively in transmission connection with the first connecting rods of the two groups of first clamping assemblies.

According to a preferred embodiment, the first clamping assembly comprises the first connecting rod, a T-shaped connecting rod, an L-shaped clamping piece and a clamping head, wherein one end of the first connecting rod, which is far away from the rotating shaft, is rotationally connected with the end of a long shaft of the T-shaped connecting rod, and the other end of the long shaft, which is far away from the first connecting rod, is connected with the L-shaped clamping piece through a mounting piece; the end of the L-shaped clamping piece far away from the long shaft is further provided with the clamping head facing the axis extension line of the output shaft.

According to a preferred embodiment, the shaft rod of the long shaft is further connected with a short shaft perpendicular to the axis of the long shaft, one end of the short shaft away from the long shaft is rotatably supported on the bottom plate through a first rotating bearing, so that the T-shaped connecting rod rotates around the axis of the first rotating bearing connected with the short shaft when the long shaft is pulled by the first connecting rod, and the L-shaped clamping piece synchronously drives the clamping head to translate close to or far away from an axis extension line of the output shaft.

According to a preferred embodiment, the end of the output shaft far away from the shaft rod is further provided with a pushing disc capable of pushing the two second clamping assemblies which are symmetrically arranged to deflect oppositely or back.

According to a preferred embodiment, the second clamping assembly comprises a rotary pressing plate, a pressing block, a limiting spring and a second rotary bearing, one end of the rotary pressing plate is rotatably supported on the bottom plate through the second rotary bearing, the pressing block is connected to the side face, which is opposite to and far away from the second rotary bearing, of the two symmetrically arranged rotary pressing plates, and the limiting spring is arranged on the side face, opposite to the side face, of the two symmetrically arranged rotary pressing plates.

According to a preferred embodiment, the fixed end of the limiting spring, which is far away from the rotating pressing plate, is limited by a supporting plate supported on the bottom plate.

According to a preferred embodiment, the side of the plate body of the rotary pressing plate facing the axis extension line of the output shaft is further provided with a separation and combination protrusion.

According to a preferred embodiment, a guide groove is also provided on the base plate, which guide groove is in rail connection with the connecting head.

The beneficial effects of the utility model are as follows:

According to the application, the first clamping component and the second clamping component which can be simultaneously linked with the output shaft of the driving mechanism are arranged to synchronously and effectively position at least two relatively movable accessories forming the combined workpiece, so that the relatively movable assembly positions of the accessories can be always and effectively maintained in the process of clamping the combined workpiece and when the combined workpiece is clamped, the combined workpiece formed by at least two unlocked or relatively fixed accessories can be ensured to be positioned at a designated processing platform or processing position under the clamping of the clamp designed by the application, and thus, the combined assembled workpiece can be accurately processed at a non-deviation position, the processing quality is ensured, and the processing yield is improved.

The driving mechanism provided by the application drives the first clamping assembly and the second clamping assembly to carry out clamping movement simultaneously through the output shaft as power output, so that synchronous clamping and limiting of different accessories of the combined workpiece can be realized adjustably, the processing position of the combined workpiece can be limited, the relative assembly position relation between the different accessories can be effectively ensured to be unchanged, and the processing accuracy and quality can be further improved effectively.

The two symmetrically distributed first clamping assemblies can deflect oppositely or back to the contrary under the transmission of the output shaft, so that the clamping limit is controllably carried out on accessories with larger section sizes in the combined workpiece between the two first clamping assemblies. The symmetrically arranged second clamping assemblies can enable the two rotating pressing plates arranged in alignment to expand to open a limiting space under the pushing of the pushing disc under the pushing of the output shaft, so that when the pushing disc is pushed to release the pushing action, pressing blocks on the rotating pressing plates abut against accessories with smaller clamping size/section diameter under the action of the limiting springs. According to the application, the first clamping component and the second clamping component are driven by the output shaft to simultaneously clamp at least two movable accessories forming the combined workpiece, so that the position limitation of the combined workpiece is realized and the fixing of the relative positions between the accessories is ensured.

Drawings

FIG. 1 is a schematic structural view of a preferred dual-station clamping tool with different diameters according to the present utility model;

Fig. 2 is a schematic structural diagram of a preferred dual-station clamping tool with different diameters when being expanded.

List of reference numerals

1: A bottom plate; 2: a driving mechanism; 3: a first clamping assembly; 4: a second clamping assembly; 11: a guide groove; 21: an output shaft; 22: a guide sleeve; 23: a connector; 24: a hydraulic telescoping unit; 25: a rotating shaft; 26: pushing the disc; 31: a first link; 32: a T-shaped connecting rod; 33: an L-shaped clamping member; 34: a clamping head; 35: a mounting member; 36: a first rotating bearing; 41: rotating the pressing plate; 42: briquetting; 43: a limit spring; 44: a second rotating bearing; 45: a support plate; 321: a long axis; 322: a short shaft; 411: a plate body; 412: and the opening and closing bulges.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

The technical solution provided by the present utility model will be described in detail by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present utility model, but is not intended to limit the present utility model. In some instances, some embodiments are not described or described in detail as such, as may be known or conventional in the art.

Furthermore, features described herein, or steps in all methods or processes disclosed, may be combined in any suitable manner in one or more embodiments in addition to mutually exclusive features and/or steps. It will be readily understood by those skilled in the art that the steps or order of operation of the methods associated with the embodiments provided herein may also be varied. Any order in the figures and examples is for illustrative purposes only and does not imply that a certain order is required unless explicitly stated that a certain order is required.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein, where appropriate (without making up a paradox), include both direct and indirect connections (couplings).

The following detailed description refers to the accompanying drawings.

Example 1

The application provides a reducing double-station clamping tool which comprises a bottom plate 1, a driving mechanism 2, a first clamping component 3 and a second clamping component 4.

According to a specific embodiment shown in fig. 1-2, the base plate 1 is removably mounted on a table or transfer robot of a numerically controlled machining center. The mounting surface of the bottom plate 1 is provided with a driving mechanism 2, a first clamping assembly 3 and a second clamping assembly 4 in a partition mode. Both sets of first clamping assemblies 3 and second clamping assemblies 4 are symmetrically distributed along the axial direction of the output shaft 21 of the drive mechanism 2. The first clamping assembly 3 and the second clamping assembly 4 are respectively connected with the middle section and the tail end of the output shaft 21 in a transmission manner in a mode of synchronously opening and closing along with the axial translation of the output shaft 21, so that the working positions of the first clamping assembly 3 and the second clamping assembly 4 are changed. According to the application, the first clamping component 3 and the second clamping component 4 which can be simultaneously linked with the output shaft 21 of the driving mechanism 2 are arranged to synchronously and effectively position at least two relatively movable accessories forming the combined workpiece, so that the relatively movable accessory can be always and effectively kept at the relative assembly position in the process of clamping the combined workpiece and when the combined workpiece is clamped, the combined workpiece formed by at least two unlocked or relatively fixed accessories can be ensured to be positioned at a designated processing platform or processing position under the clamping of the clamp designed by the application, and thus, the combined assembled workpiece can be processed accurately and accurately without deviation, the processing quality is ensured, and the processing yield is improved.

Preferably, a guide groove 11 is provided on the base plate 1, which is in rail connection with the connection head 23. It is further preferred that the guide groove 11 can assist in defining the direction of movement and the translational height of the connector 23 so that the output shaft 21 can be more stably translated in a certain height plane.

Preferably, the drive mechanism 2 comprises an output shaft 21, a guide sleeve 22, a connector 23 and a hydraulic telescopic unit 24. Preferably, the guide sleeve 22 and the hydraulic telescopic unit 24 are detachably mounted on the base plate 1, and the output shaft 21 is movably penetrated in the guide sleeve 22 so as to limit the movement direction of the output shaft 21 for axial translation. It is further preferred that the power input end of the output shaft 21 is connected with the hydraulic telescopic unit 24 through the connector 23, so that the hydraulic telescopic unit 24 is driven to axially translate to drive the first clamping assembly 3 and the second clamping assembly 4 to change the working positions. Preferably, the shaft 25 is provided in the middle of the output shaft 21. Specifically, the two ends of the rotation shaft 25 are respectively in transmission connection with the first connecting rods 31 of the two groups of first clamping assemblies 3, so that the first connecting rods 31 can deflect in the process that the rod body ends of the first connecting rods follow the rotation shaft 25 to translate along the axial direction of the output shaft 21. Preferably, the end of the shaft, far from the output shaft 21, is also provided with a pushing disc 26 capable of pushing the two second clamping assemblies 4 symmetrically arranged to deflect in opposite directions or back to each other. The driving mechanism 2 provided by the application drives the first clamping component 3 and the second clamping component 4 to carry out clamping movement simultaneously through the output shaft 21 which is taken as power output, so that synchronous clamping and limiting of different accessories of the combined workpiece can be realized adjustably, the processing position of the combined workpiece can be limited, the relative assembly position relation among the different accessories can be effectively ensured to be unchanged, and the processing accuracy and quality can be further improved effectively.

Preferably, the first clamping assembly 3 comprises a first link 31, a T-shaped link 32, an L-shaped clamp 33 and a clamping head 34. Preferably, an end of the first link 31 remote from the rotational axis 25 is rotatably coupled to an end of the long axis 321 of the T-shaped link 32. It is further preferable that the connection positions of the first link 31 and the rotation shaft 321 are provided with elongated holes, so that a certain distance of offset can be generated during the rotation transmission process to ensure the effectiveness of the motion transmission. Preferably, the other end of the long shaft 321 remote from the first link 31 is connected to the L-shaped clamp 33 by a mounting member 35. Preferably, the end of the L-shaped clamp 33 remote from the long axis 321 is further provided with a clamp head 34 facing the axis extension of the output shaft 21. Preferably, the shaft of the long shaft 321 is also connected with a short shaft 322 perpendicular to the axis thereof. Specifically, the end of the short shaft 322 remote from the long shaft 321 is rotatably supported on the base plate 1 by the first rotational bearing 36, so that the T-shaped link 32 rotates about the axis of the first rotational bearing 36 to which the short shaft 322 is connected when the long shaft 321 is pulled by the first link 31, and the L-shaped clamp 33 synchronously moves the clamp head 34 in translation toward or away from the axis extension line of the output shaft 21. The two symmetrically distributed first clamping assemblies 3 can deflect oppositely or back to back under the transmission of the output shaft 21, so that the clamping limit can be controllably carried out on accessories with larger section sizes in the combined workpiece between the two first clamping assemblies 3.

Preferably, the second clamping assembly 4 comprises a rotating pressure plate 41, a pressure block 42, a limit spring 43 and a second rotating bearing 44. Preferably, one end of the rotating platen 41 is rotatably supported on the base plate 1 by a second rotating bearing 44. Further preferably, the two symmetrically arranged rotating pressing plates 41 are connected with pressing blocks 42 on the side faces which face each other and are far away from the second rotating bearing 44, and limit springs 43 are arranged on the side faces, which face away from the two symmetrically arranged rotating pressing plates 41. Preferably, the fixed end of the limiting spring 43 away from the rotating platen 41 is limited by a support plate 45 supported on the base plate 1. Further preferably, the plate body 411 of the rotary pressing plate 41 is also provided with a separation and combination protrusion 412 on a side facing the axis extension line of the output shaft 21. Preferably, the pressure contact surfaces of the gripping head 34 and the press block 42 are also provided with an elastic anti-slip layer. The symmetrically arranged second clamping assemblies 4 provided by the application can enable the two rotating pressing plates 41 which are arranged in alignment to expand to open a limit space under the pushing of the pushing disc 26 under the pushing of the output shaft 21, so that when the pushing disc 26 releases the pushing action, the pressing blocks 42 on the rotating pressing plates 41 abut against accessories with smaller clamping size/section diameter under the action of the limit springs 43. According to the application, the position of the first clamping component 3 and the second clamping component 4 is adjusted under the drive of the output shaft 21 to simultaneously clamp at least two movable accessories forming the combined workpiece, so that the position limitation of the combined workpiece is realized and the fixing of the relative positions between the accessories is ensured.

The working principle of the application is as follows:

When in use, the hydraulic telescopic unit 24 stretches to push the output shaft 21 to move in a direction away from the hydraulic telescopic unit 24, so that the output shaft 21 drives the first connecting rod 31 to deflect, and the first connecting rod 31 drives the T-shaped connecting rod 32, the L-shaped clamping piece 33 and the clamping head 34 to synchronously deflect, so that the distance between the two symmetrically arranged clamping heads 34 is increased, and the combined workpiece to be machined is conveniently arranged. The pushing disc 26 arranged at one end of the output shaft 21 far away from the hydraulic telescopic unit 24 pushes the two separating and combining protrusions 412 far away from each other, so that the two symmetrically arranged rotating pressing plates 41 move back to increase the distance. After the assembly workpiece is placed, the hydraulic telescopic unit 24 starts to shrink, so that the output shaft 21 reversely translates, thereby driving the two symmetrically arranged first clamping assemblies 3 to move in opposite directions to clamp the accessory with larger size/diameter in the combined workpiece, and meanwhile, pushing the disc 26 to release the abutting acting force on the split protrusions 412, so that the rotating pressing plate 41 of the second clamping assembly 4 deflects in opposite directions under the action of the reset elastic force of the limiting spring 43, and the pressing block 42 connected with the two rotating pressing plates 41 clamps the accessory with smaller size/diameter of the combined workpiece under the action of the limiting spring 43, thereby realizing the clamping of the different-diameter double-station of the movably assembled combined workpiece.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model. It should be understood by those skilled in the art that the present description and drawings are illustrative and not limiting to the claims. The scope of the utility model is defined by the claims and their equivalents. Throughout this document, the word "preferably" is used in a generic sense to mean only one alternative, and not to be construed as necessarily required, so that the applicant reserves the right to forego or delete the relevant preferred feature at any time.

Claims (10)

1. The utility model provides a reducing duplex position centre gripping frock, includes bottom plate (1) of installing on numerical control machining center, its characterized in that,

The mounting surface of the bottom plate (1) is provided with a driving mechanism (2), a first clamping component (3) and a second clamping component (4) in a partitioning way, wherein,

The two groups of the first clamping components (3) and the second clamping components (4) are symmetrically distributed along the axial direction of the output shaft (21) of the driving mechanism (2), and the first clamping components (3) and the second clamping components (4) are respectively connected with the middle section and the tail end of the output shaft (21) in a transmission manner in a mode of synchronously opening and closing along with the axial translation of the output shaft (21), so that the working positions of the first clamping components (3) and the second clamping components (4) are changed.

2. The reducing duplex clamping fixture according to claim 1, wherein the driving mechanism (2) comprises the output shaft (21), a guide sleeve (22), a connector (23) and a hydraulic telescopic unit (24),

The guide sleeve (22) and the hydraulic telescopic unit (24) are detachably arranged on the bottom plate (1), and the output shaft (21) is movably penetrated in the guide sleeve (22) so as to limit the movement direction of the output shaft (21) for axial translation;

The power input end of the output shaft (21) is connected with the hydraulic telescopic unit (24) through a connector (23), so that the hydraulic telescopic unit (24) is driven to axially translate, and the first clamping assembly (3) and the second clamping assembly (4) are driven to change stations.

3. The reducing double-station clamping tool as claimed in claim 2, wherein a rotating shaft (25) is arranged on a middle shaft lever of the output shaft (21) in a penetrating way, and two ends of the rotating shaft (25) are respectively in transmission connection with the first connecting rods (31) of the two groups of first clamping assemblies (3).

4. The reducing duplex clamping fixture according to claim 3, wherein the first clamping assembly (3) comprises the first connecting rod (31), a T-shaped connecting rod (32), an L-shaped clamping piece (33) and a clamping head (34), wherein,

One end of the first connecting rod (31) far away from the rotating shaft (25) is rotationally connected with the end part of the long shaft (321) of the T-shaped connecting rod (32), and the other end of the long shaft (321) far away from the first connecting rod (31) is connected with the L-shaped clamping piece (33) through a mounting piece (35);

The end of the L-shaped clamping piece (33) which is far away from the long shaft (321) is also provided with the clamping head (34) which faces the axis extension line of the output shaft (21).

5. The reducing double-station clamping tool as claimed in claim 4, wherein a short shaft (322) perpendicular to the axis of the long shaft (321) is further connected to the shaft rod of the long shaft (321), one end of the short shaft (322) far away from the long shaft (321) is rotatably supported on the bottom plate (1) through a first rotating bearing (36), so that the T-shaped connecting rod (32) rotates around the axis of the first rotating bearing (36) connected with the short shaft (322) when the long shaft (321) is pulled by the first connecting rod (31), and the L-shaped clamping piece (33) synchronously drives the clamping head (34) to translate close to or far away from an axis extension line of the output shaft (21).

6. The reducing double-station clamping tool as claimed in claim 5, wherein the end part of the output shaft (21) far away from the shaft lever is further provided with a pushing disc (26) capable of pushing two second clamping assemblies (4) which are symmetrically distributed to deflect oppositely or back to back.

7. The reducing duplex clamping fixture according to claim 6, wherein the second clamping assembly (4) comprises a rotary pressing plate (41), a pressing block (42), a limiting spring (43) and a second rotary bearing (44),

One end of the rotary pressing plate (41) is rotatably supported on the bottom plate (1) through the second rotary bearing (44),

The two symmetrical rotating pressing plates (41) are oppositely arranged, the side faces far away from the second rotating bearing (44) are connected with the pressing blocks (42), and the opposite side faces of the two symmetrical rotating pressing plates (41) are provided with the limiting springs (43).

8. The reducing duplex clamping fixture according to claim 7, wherein the fixed end of the limiting spring (43) away from the rotating pressing plate (41) is limited by a supporting plate (45) supported on the bottom plate (1).

9. The reducing double-station clamping tool as claimed in claim 8, wherein a side of the plate body (411) of the rotary pressing plate (41) facing the axis extension line of the output shaft (21) is further provided with a separating and combining protrusion (412).

10. The reducing duplex clamping fixture according to claim 9, wherein a guiding groove (11) in rail connection with the connector (23) is further arranged on the bottom plate (1).