CN214351086U

CN214351086U - Nonstandard clamping tool for flat concentric circle workpiece

Info

Publication number: CN214351086U
Application number: CN202120101091.3U
Authority: CN
Inventors: 向蛟腾; 叶艳珍; 向良; 江文良; 林文昌; 冯赞雄
Original assignee: Foshan Minj Automation Equipment Co ltd
Current assignee: Foshan Minj Automation Equipment Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-10-08
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a flat concentric circles non-standard clamping frock of work piece, including main shaft, flange, electromagnet, taut needle and chuck, be equipped with the pull rod in the main shaft, the flange mounting is on the main shaft, electromagnet installs on the flange, and electromagnet surface mounting has the cushion, and electromagnet opens, and the work piece is absorb to the cushion, the one end and the pull rod fixed connection of taut needle to slide in the flange under the effect of pull rod, the other end of taut needle is provided with the portion of expanding, and the portion of expanding is radius platform type, the chuck is installed on the flange and is located electromagnet to the terminal surface of chuck is higher than the terminal surface of cushion, is equipped with the bell mouth with the looks adaptation of expanding in the chuck, and when taut needle moved backward, the chuck was propped open with the positioning workpiece hole. Adopt the utility model discloses, realize the effectual function of work piece centre gripping, guarantee to process the back work piece indeformable to reduce the production of waste product.

Description

Nonstandard clamping tool for flat concentric circle workpiece

Technical Field

The utility model relates to a digit control machine tool equipment technical field especially relates to a nonstandard clamping frock of flat concentric circles work piece.

Background

In the processing of flat concentric circular workpieces, as shown in fig. 9, a chuck or chuck is typically used to secure the workpiece to a numerically controlled machine tool. Because the thickness of flat concentric circle work piece is thin to machining precision requires highly, driven centre gripping frock fixes a position the processing through fixed work piece hole, and traditional centre gripping frock is poor to the location of work piece, centre gripping effect, and the work piece is easy to be out of shape after processing, and then forms the waste product.

Disclosure of Invention

The utility model aims to solve the technical problem that a nonstandard clamping frock of flat concentric circles work piece is provided, realizes the effectual function of work piece centre gripping, guarantees that the back work piece of processing is indeformable to reduce the production of waste product.

In order to solve the technical problem, the utility model provides a flat concentric circles work piece's nonstandard clamping tool, include:

a main shaft, wherein a pull rod is arranged in the main shaft;

a flange mounted on the main shaft;

the electromagnetic chuck is arranged on the flange, the surface of the electromagnetic chuck is provided with a cushion block, the electromagnetic chuck is opened, and the cushion block absorbs a workpiece;

one end of the tensioning needle is fixedly connected with the pull rod and slides in the flange under the action of the pull rod, and the other end of the tensioning needle is provided with an expansion part which is in an inverted circular truncated cone shape;

and the chuck is arranged on the flange and positioned in the electromagnetic chuck, the end surface of the chuck is higher than that of the cushion block, a conical hole matched with the expansion part is arranged in the chuck, and when the tensioning needle moves backwards, the chuck is expanded to position the inner hole of the workpiece.

The chuck comprises at least two clamping jaws, wherein the clamping jaws mutually enclose a conical hole, and the two adjacent clamping jaws are connected through an elastic layer.

Wherein, the one end that the clamping jaw is close to the flange is equipped with first installation department, and first installation department top is towards outwards extending there is first fixture block, the one end that the flange is close to the clamping jaw is equipped with the second installation department, and second installation department top extends inwards has the second fixture block of dodging first fixture block, and when first fixture block misplaced with the second fixture block, the second installation department can be inserted to first installation department, and when first fixture block and second fixture block laminated, the first installation department of second installation department lockable, the chuck still includes can prevent first installation department pivoted locking Assembly.

The first clamping block is positioned on two sides of the top of the first mounting part or in the center of the top.

The end face of the second installation portion is provided with a positioning groove, the locking assembly comprises a positioning pin, the positioning pin is in threaded connection with one clamping jaw of the positioning pin, and the tail end of the positioning pin extends into the positioning groove.

The pull rod is in threaded connection with the tensioning needle, and a hexagon socket hole convenient for installation of the tensioning needle is formed in the middle of the tensioning needle.

The tensioning needle is provided with a sliding groove parallel to the axial lead of the tensioning needle, and the tail end of the limiting screw acts on the sliding groove.

Implement the utility model has the advantages that: adopt electromagnet to produce magnetic force and absorb the work piece for the work piece pastes tight cushion all the time in the course of working, work piece non-deformable to and adopt taut needle back draw in order strutting the chuck, make the chuck carry out the centre gripping to the work piece hole, can guarantee the concentricity of work piece, electromagnet and chuck cooperation realize the effectual function of centre gripping, guarantee that the back work piece of processing is indeformable, thereby reduce the production of waste product.

Drawings

Fig. 1 is a perspective view of a non-standard clamping tool for flat concentric circular workpieces according to the present invention;

fig. 2 is an exploded view of a nonstandard clamping tool for a flat concentric workpiece according to the present invention;

fig. 3 is a front cross-sectional view of a non-standard clamping tool for flat concentric circular workpieces according to the present invention;

FIG. 4 is an enlarged view of FIG. 3 at A;

fig. 5 is a front view of a first scheme of a chuck in a nonstandard clamping tool for flat concentric circular workpieces according to the present invention;

fig. 6 is a front view of a second scheme of a chuck in the nonstandard clamping tool for flat concentric circular workpieces according to the present invention;

fig. 7 is a perspective view of a second embodiment of a chuck in a nonstandard clamping tool for flat concentric circular workpieces according to the present invention;

fig. 8 is a perspective view of a flange matched with the second scheme of the chuck in the nonstandard clamping tool for the flat concentric circular workpiece according to the present invention;

FIG. 9 is a flat concentric circular workpiece;

fig. 10 is a usage status diagram of the non-standard clamping tool for flat concentric circular workpieces, when the cushion block is matched to process the workpiece.

In the figure: 1. a main shaft; 2. a pull rod; 3. a flange; 31. a second mounting portion; 32. a second fixture block; 33. positioning a groove; 4. an electromagnetic chuck; 5. cushion blocks; 6. tensioning the needle; 61. an expansion portion; 62. an inner hexagonal hole; 63. a chute; 7. a chuck; 71. a tapered hole; 72. a clamping jaw; 721. a first mounting portion; 722. a first clamping block; 73. an elastic layer; 74. a locking assembly; 8. and a limiting screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-8, the utility model relates to a nonstandard clamping tool for flat concentric circle workpieces, which comprises a main shaft 1, a flange 3, an electromagnetic chuck 4, a tensioning needle 6 and a chuck 7, wherein the main shaft 1 is installed on a main shaft seat of a numerical control machine tool and is driven by the numerical control machine tool to rotate, the main shaft 1 is internally provided with a pull rod 2, the pull rod 2 is connected with a driving translation component of the numerical control machine tool, such as a hollow hydraulic cylinder, so that the pull rod 2 performs translation motion along the axial lead of the main shaft 1, the flange 3 is installed on the main shaft 1, the electromagnetic chuck 4 is installed on the flange 3, the surface of the electromagnetic chuck 4 is provided with a cushion block 5, specifically, the cushion block 5 is a magnetic conductive metal, the cushion blocks 5 are installed on the electromagnetic chuck 4 in a manner of circumferential distribution, the cushion blocks 5 are provided, play a role of protecting the surface of the electromagnetic chuck 4, and avoid in the processing process, the cutter on the digit control machine tool damages electromagnet 4, and electromagnet 4 opens, and cushion 5 absorbs the work piece, and electromagnet 4 closes, and cushion 5 releases the work piece to the realization is to the function of work piece absorption, in order to reach the purpose of location work piece, the one end of taut needle 6 and pull rod 2 fixed connection and make the slip in flange 3 under the effect of pull rod 2, and the other end of taut needle 6 is provided with bloated portion 61, and bloated portion 61 is radius platform type, chuck 7 is installed on flange 3 and is located electromagnet 4 to the terminal surface of chuck 7 is higher than the terminal surface of cushion 5, is equipped with the bell mouth 71 with bloated portion 61 looks adaptation in the chuck 7, and when taut needle 6 moved backward, chuck 7 was strutted in order to fix a position the work piece hole, thereby realizes carrying out the function of centering to the work piece, with the concentricity of assurance work piece.

The utility model provides a theory of operation as follows: referring to fig. 3 and 4, when clamping a flat concentric circle workpiece, the electromagnetic chuck 4 is opened, the electromagnetic chuck 4 generates magnetic force, and the workpiece is sucked through the cushion block 5, then the translation assembly of the numerical control machine drives the pull rod 2 to move backwards, the pull rod 2 drives the tensioning needle 6 to move backwards, the expanding part 61 of the tensioning needle 6 moving backwards is matched with the conical hole 71 of the chuck 7, so that the outer diameter of the chuck 7 is increased, and the outer wall of the chuck 7 acts on the inner hole of the workpiece, so that the purpose of centering the workpiece by the chuck 7 is achieved. The electromagnetic chuck 4 is used for attracting the workpiece, so that the workpiece is always attached to the cushion block 5 in the machining process and is not easy to deform; and the inner hole of the workpiece is positioned by the chuck 7, so that the concentricity of the workpiece can be ensured, the aim of good clamping effect is fulfilled, and the workpiece is prevented from deforming after being processed, thereby reducing the generation of waste products.

It should be noted that, referring to fig. 9 and 10, in order to match the height of the workpiece to be processed, before the workpiece is clamped, a step may be processed at one end of the pad 5 close to the chuck 7, so that the distance between the step surface and the end surface of the chuck 7 matches the height of the workpiece, and the clamping effect of the chuck 7 is further improved.

Preferably, referring to fig. 4 to 7, the chuck 7 includes at least two jaws 72, the jaws 72 mutually enclose the tapered hole 71, and adjacent two jaws 72 are connected through an elastic layer 73. Specifically, the number of the clamping jaws 72 in this embodiment is six, six clamping jaws 72 mutually enclose the tapered hole 71, adjacent clamping jaws 72 are connected through the elastic layer 73, and the elastic layer 73 is made of rubber. Because the expansion part 61 of the tensioning needle 6 is matched with the tapered hole 71, the tapered hole 71 is expanded when the expansion part 61 moves backwards, the six clamping jaws 72 move outwards under the action of the elastic layer 73, and the chuck 7 can position the inner hole of the workpiece to ensure the concentricity of the workpiece; when the workpiece is disassembled, the expansion part 61 moves forwards under the action of the pull rod 2, namely, the expansion part 61 resets, the elastic layer 73 restores to deform, so that the six clamping jaws 72 reset, and at the moment, the clamping head 7 loosens the inner hole of the workpiece.

Further, referring to fig. 4-8, in order to facilitate the connection and fixation of the clamping jaw 72 and the flange 3, a first mounting portion 721 is disposed at one end of the clamping jaw 72 close to the flange 3, a first fixture block 722 extends outwards from the top of the first mounting portion 721, a second mounting portion 31 is disposed at one end of the flange 3 close to the clamping jaw 72, a second fixture block 32 avoiding the first fixture block 722 extends inwards from the top of the second mounting portion 31, when the first fixture block 722 and the second fixture block 32 are dislocated, the first mounting portion 721 can be inserted into the second mounting portion 31, when the first fixture block 722 is attached to the second fixture block 32, the second mounting portion 31 can lock the first mounting portion 721, and the chuck 7 further includes a locking assembly 74 capable of preventing the first mounting portion 721 from rotating.

The position of the first latch 722 on the first mounting portion 721 has two schemes:

the first scheme is as follows: referring to fig. 5, the first latch 722 is located at two sides of the top of the first mounting portion 721;

the second scheme is as follows: referring to fig. 6, the first latch 722 is located at the middle of the top of the first mounting portion 721. In a second preferred embodiment of the present invention, referring to fig. 4, 7 and 8, when the chuck 7 is mounted on the flange 3, the first fixture block 722 on the six clamping jaws 72 and the second fixture block 32 of the flange 3 are inserted in a staggered manner, so that the first mounting portion 721 is inserted into the second mounting portion 31, then the chuck is rotated by 30 °, so that the six first fixture blocks 722 are respectively attached to the six second fixture blocks 32, so as to define the axial moving direction of the chuck 7, and finally, the circumferential rotating direction of the chuck 7 is defined by the locking assembly 74, so as to realize the fixed connection between the chuck 7 and the flange 3.

Preferably, referring to fig. 4, the end surface of the second mounting portion 31 is provided with a positioning groove 33, and the locking assembly 74 includes a positioning pin, which is threadedly connected to one of the clamping jaws 72 and extends to the positioning groove 33 at the end, so as to limit circumferential rotation of the collet 7, and prevent relative rotation between the collet 7 and the flange 3, so as to cause the first latch 722 to disengage from the second latch 32, and disconnect the connection between the collet 7 and the flange 3.

Preferably, referring to fig. 3 and 4, the pull rod 2 is in threaded connection with the tensioning needle 6, and the middle part of the tensioning needle 6 is provided with a hexagon socket 62 for facilitating installation with the tensioning needle 6. The tensioning needle 6 can be screwed into the pull rod 2 by inserting a hexagonal wrench into the hexagonal socket 62, so that the tensioning needle 6 can be conveniently mounted and dismounted.

Preferably, referring to fig. 3 and 4, the tensioning device further comprises a limit screw 8 in threaded connection with the flange 3, the tensioning needle 6 is provided with a sliding groove 63 parallel to the axial lead thereof, and the tail end of the limit screw 8 acts on the sliding groove 63. Through setting up spout 63 for stop screw 8 can only make translational motion along spout 63 direction, can avoid flange 3 and taut needle 6 to take place relative rotation, thereby influences the centre gripping effect.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a flat concentric circles work piece does not mark clamping tool which characterized in that includes:

a main shaft (1) in which a pull rod (2) is arranged;

the flange (3) is arranged on the main shaft (1);

the electromagnetic chuck (4) is arranged on the flange (3), the surface of the electromagnetic chuck is provided with a cushion block (5), the electromagnetic chuck (4) is opened, and the cushion block (5) absorbs a workpiece;

one end of the tensioning needle (6) is fixedly connected with the pull rod (2) and slides in the flange (3) under the action of the pull rod (2), the other end of the tensioning needle is provided with an expansion part (61), and the expansion part (61) is in an inverted circular truncated cone shape;

and the chuck (7) is arranged on the flange (3) and is positioned in the electromagnetic chuck (4), the end surface of the chuck (7) is higher than the end surface of the cushion block (5), a conical hole (71) matched with the expansion part (61) is arranged in the chuck (7), and when the tensioning needle (6) moves backwards, the chuck (7) is expanded to position the inner hole of the workpiece.

2. The non-standard clamping tool for flat concentric circular workpieces as claimed in claim 1, wherein the clamping head (7) comprises at least two clamping jaws (72), the clamping jaws (72) mutually surround a conical hole (71), and the two adjacent clamping jaws (72) are connected through an elastic layer (73).

3. The nonstandard clamping tool for the flat concentric circular workpieces as claimed in claim 2, one end of the clamping jaw (72) close to the flange (3) is provided with a first mounting part (721), the top of the first mounting part (721) extends outwards to form a first clamping block (722), a second mounting part (31) is arranged at one end, close to the clamping jaw (72), of the flange (3), a second clamping block (32) avoiding the first clamping block (722) extends inwards from the top of the second mounting part (31), when the first clamping block (722) and the second clamping block (32) are staggered, the first mounting part (721) can be inserted into the second mounting part (31), when the first fixture block (722) is jointed with the second fixture block (32), the second mounting part (31) can lock the first mounting part (721), the chuck (7) further includes a locking assembly (74) that prevents rotation of the first mounting portion (721).

4. The nonstandard clamping tool for the flat concentric circular workpieces as claimed in claim 3, wherein the first fixture blocks (722) are positioned at two sides of the top part of the first mounting part (721) or at the center of the top part.

5. The nonstandard clamping tool for the flat concentric circular workpieces as claimed in claim 3, wherein the end face of the second mounting part (31) is provided with a positioning groove (33), and the locking assembly (74) comprises a positioning pin which is in threaded connection with a clamping jaw (72) of the positioning pin and extends into the positioning groove (33) at the tail end.

6. The nonstandard clamping tool for the flat concentric circular workpieces as claimed in claim 1, characterized in that the pull rod (2) is in threaded connection with the tensioning needle (6), and the middle part of the tensioning needle (6) is provided with a hexagon socket (62) for facilitating installation of the tensioning needle (6).

7. The nonstandard clamping tool for the flat concentric circular workpieces as claimed in claim 1, further comprising a limit screw (8) in threaded connection with the flange (3), wherein the tensioning needle (6) is provided with a sliding groove (63) parallel to the axial lead of the tensioning needle, and the tail end of the limit screw (8) acts on the sliding groove (63).