CN216989929U

CN216989929U - Positioning fixture for machining parts of numerically controlled lathe

Info

Publication number: CN216989929U
Application number: CN202220458916.1U
Authority: CN
Inventors: 陈伟
Original assignee: Dalian Kaierfu Mould Manufacturing Co ltd
Current assignee: Dalian Kaierfu Mould Manufacturing Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-07-19
Anticipated expiration: 2032-03-03

Abstract

The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for machining parts of a numerically controlled lathe. According to the utility model, through the arrangement of the buffer mechanism, when the chuck is used for clamping a workpiece, the rubber plate in the buffer mechanism can be firstly contacted with the workpiece and deformed, so that the extrusion effect of the clamping jaws on the workpiece is weakened, and the workpiece is prevented from being deformed due to the fact that the clamping jaws excessively extrude the workpiece, and the adjusting part in the buffer mechanism can pull the extrusion plate according to the use size of the clamping jaws, so that the use length of the adjusting part is changed, the distance between the extrusion plate and the rubber plate is adjusted, and the extrusion plate and the rubber plate are respectively tightly attached to two ends of the clamping jaws, so that the rubber plate is convenient to mount, and the operation efficiency is improved.

Description

Positioning fixture for machining parts of numerically controlled lathe

Technical Field

The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for part processing of a numerical control lathe.

Background

In a machine manufacturing process, a device for fixing a work object to take a correct position to receive a construction or inspection, also called a jig, is called a jig, and in a broad sense, in any process in a process, a device for quickly, conveniently and safely mounting a work piece is called a jig, and a machine tool jig most often uses a four-jaw chuck to fix the work piece.

Although the positioning effect of the workpiece can be realized to a certain extent by the existing four-jaw chuck, and the stability of the workpiece during machining is ensured, in actual use, the jaws are excessively contacted with the workpiece every year due to improper operation, so that the workpiece is deformed, and the machining quality of the workpiece is influenced.

Among the prior art, through adding the rubber pad in the jack catch of chuck and the one side that the work piece contacted, so that the jack catch when contacting with the work piece, play certain buffering effect, avoid the work piece atress excessive and deformation appears, can discover in the in-service use, the rubber pad is worn and torn very easily appears in long-time use, so need in time change it, but among the prior art the rubber pad is installed on the jack catch with sticky mode, not only the installation effectiveness is low, and the change in later stage of not being convenient for.

SUMMERY OF THE UTILITY MODEL

Based on the defects in the prior art mentioned in the background art, the utility model provides the positioning clamp for machining the parts of the numerically controlled lathe.

The utility model overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:

a positioning fixture for machining parts of a numerically controlled lathe comprises a lathe body, a chuck rotatably arranged on the lathe body, a plurality of clamping jaws arranged at the front end of the chuck in an equidistant surrounding and sliding mode, and a buffer mechanism detachably arranged on the clamping jaws and used for preventing a workpiece from deforming;

the buffer mechanism comprises a rubber plate arranged on the face, close to the jaw, of the lathe body, and an extrusion plate arranged on the face, far away from the face, of the lathe body, of the jaw, and the extrusion plate is connected with the rubber plate through an adjusting component.

As a further scheme of the utility model: the adjusting part comprises a sliding plate and a telescopic plate, the sliding plate is arranged in the sliding plate, the sliding plate is arranged on one face, far away from the lathe body, of the clamping jaw, a contraction groove used for movement of the telescopic plate is formed in the inner wall of the sliding plate, the telescopic plate is vertically connected with the extrusion plate, and the sliding plate is vertically connected with the rubber plate.

As a still further scheme of the utility model: and a return spring is arranged between the expansion plate and the innermost inner wall of the contraction groove.

As a still further scheme of the utility model: the side edge of the expansion plate is provided with a rail limiting sliding strip, and a rail limiting sliding groove matched with the rail limiting sliding strip is arranged in the inner wall of the contraction groove.

As a still further scheme of the utility model: the adjusting part also comprises a pressing component used for enhancing the connection effect between the adjusting part and the clamping jaw;

compress tightly the subassembly including set up in supply the slide to keep away from shrink frame, the slip set up in shrink fixed block in the frame, shrink frame is kept away from supply the slide to wear to be equipped with the screw rod in the one side, the screw rod with rotate between the fixed block and be connected, the expansion plate is kept away from the equidistance is provided with a plurality of fixed orifices in the one side of jack catch, the fixed block penetrates one of them in the fixed orifices.

As a still further scheme of the utility model: the fixing hole with the fixed block all is right angle trapezoidal shape.

After adopting the structure, compared with the prior art, the utility model has the following advantages:

through buffer gear's setting, when using chuck centre gripping work piece, wherein the rubber slab among the buffer gear can at first contact with the work piece, take place deformation, with this extrusion effect of weakening the jack catch to the work piece, prevent the jack catch excessive to the work piece extrusion, and lead to work piece deformation, and adjusting part among the buffer gear, can be according to the use size of jack catch, the pulling stripper plate, make adjusting part's use length change, adjust the interval between stripper plate and the rubber slab, cause stripper plate and the both ends of rubber slab inseparable jack catch respectively, the installation of the rubber slab of being convenient for from this, and the operating efficiency is improved.

Drawings

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

FIG. 2 is a schematic view of the structure of the chuck of the present invention.

Fig. 3 is a schematic structural view of the buffer mechanism of the present invention.

Fig. 4 is a schematic structural view of the buffer mechanism of the present invention.

In the figure: 1. a lathe body; 2. a chuck; 3. a claw; 4. a supply slide plate; 5. a contraction groove; 6. a retractable plate; 7. a rubber plate; 8. a pressing plate; 9. a rail limiting slide bar; 10. a rail-limiting sliding chute; 11. a return spring; 12. a fixing hole; 13. a shrink frame; 14. a fixed block; 15. a screw.

Detailed Description

Referring to fig. 1 to 4, in an embodiment of the present invention, a positioning fixture for part processing of a numerically controlled lathe includes a lathe body 1 and a chuck 2 rotatably disposed on the lathe body 1, wherein a plurality of jaws 3 are disposed at the front end of the chuck 2 in an equidistant surrounding and sliding manner, and the positioning fixture further includes a buffer mechanism detachably disposed on the jaws 3 for preventing deformation of a workpiece;

the buffer mechanism comprises a rubber plate 7 arranged on one surface of the clamping jaw 3 close to the central axis of the lathe body 1 and an extrusion plate 8 arranged on one surface of the clamping jaw 3 far away from the central axis of the lathe body 1, and the extrusion plate 8 is connected with the rubber plate 7 through an adjusting component;

through buffer gear's setting, when using 2 centre gripping work pieces of chuck, wherein rubber slab 7 among the buffer gear can at first contact with the work piece, take place deformation, with this extrusion effect of weakening jack catch 3 to the work piece, prevent jack catch 3 excessive to the work piece extrusion, and lead to work piece deformation, and adjusting part among the buffer gear, can be according to jack catch 3's use size, pulling stripper plate 8, make adjusting part's use length change, adjust the interval between stripper plate 8 and the rubber slab 7, cause stripper plate 8 and rubber slab 7 to closely laminate the both ends of jack catch 3 respectively, the installation of the rubber slab 7 of being convenient for from this, and the operating efficiency is improved.

In one embodiment of the utility model, the adjusting part comprises a sliding plate 4 arranged on one side of the clamping jaw 3 far away from the lathe body 1 and an expansion plate 6 arranged in the sliding plate 4 in a sliding way, a contraction groove 5 for the expansion plate 6 to move is arranged in the inner wall of the sliding plate 4, the expansion plate 6 is vertically connected with an extrusion plate 8, and the sliding plate 4 is vertically connected with a rubber plate 7;

when using adjusting part, can be at first according to the size of a dimension of jack catch 3, through pulling stripper plate 8 for 6 atresss of expansion plate slide in shrink groove 5, with this interval between adjusting stripper plate 8 and the rubber slab 7, will supply slide 4 to place in 3 surfaces of jack catch after that, then stripper plate 8, rubber slab 7 and expansion plate 6 mutually support, the card is located on jack catch 3.

In another embodiment of the utility model, a return spring 11 is arranged between the expansion plate 6 and the innermost inner wall of the contraction groove 5;

at pulling stripper plate 8, when making stripper plate 6 slide in shrink slot 5, stripper plate 6 can spur reset spring 11 simultaneously, reset spring 11 atress takes place deformation, when stripper plate 8 and rubber slab 7 are arranging 3 both ends of jack catch in from this, stripper plate 6 can be under the effect of reset spring 11 resilience force, apply reverse effort to stripper plate 8, make between stripper plate 8 and the jack catch 3 laminating inseparabler, realize the pre-fixing effect to rubber slab 7, make things convenient for the installation of rubber slab 7.

In another embodiment of the utility model, the side edge of the expansion plate 6 is provided with a rail limiting sliding strip 9, and the inner wall of the contraction groove 5 is provided with a rail limiting sliding groove 10 matched with the rail limiting sliding strip 9;

through the setting of limit rail draw runner 9 and limit rail spout 10, when expansion plate 6 slided in shrink groove 5 inboard, limit rail draw runner 9 can be in limit rail spout 10 synchronous displacement to this removal orbit that can inject expansion plate 6 guarantees the stationarity when expansion plate 6 slides.

In a further embodiment of the utility model, the adjusting part further comprises a pressing assembly for enhancing the connection effect between the adjusting part and the jaw 3;

the pressing assembly comprises a contraction frame 13 arranged on one side, far away from the clamping jaw 3, of the sliding plate 4 and a fixing block 14 arranged in the contraction frame 13 in a sliding mode, a screw 15 penetrates through one side, far away from the sliding plate 4, of the contraction frame 13, the screw 15 is rotatably connected with the fixing block 14, a plurality of fixing holes 12 are formed in one side, far away from the clamping jaw 3, of the expansion plate 6 at equal intervals, and the fixing block 14 penetrates into one of the fixing holes 12;

after the extrusion plate 8 and the rubber plate 7 are attached to each other at two ends of the jaw 3, a user can twist the screw 15 to drive the fixing block 14 to slide downwards in the contraction frame 13 until the fixing block 14 extends into one of the fixing holes 12, so that the expansion plate 6 and the sliding plate 4 can be fixedly connected to limit the distance between the extrusion plate 8 and the rubber plate 7.

In yet another embodiment of the present invention, the fixing hole 12 and the fixing block 14 are in a right trapezoid shape;

all be the setting of right angle trapezoidal form through fixed orifices 12 and fixed block 14, when fixed block 14 penetrated in one of them fixed orifices 12, the hypotenuse of fixed block 14 can be inconsistent with the slant inner wall of fixed orifices 12, and then can produce the driving force to rubber slab 7 one side to expansion plate 6, further forms reverse pulling to stripper plate 8 to this reinforcing stripper plate 8 corresponds the laminating degree of terminal surface with jack catch 3, further improves the stability of rubber slab 7 on jack catch 3.

Claims

1. A positioning fixture for machining parts of a numerically controlled lathe comprises a lathe body (1) and a chuck (2) rotatably arranged on the lathe body (1), wherein a plurality of clamping jaws (3) are arranged at the front end of the chuck (2) in an equidistant surrounding sliding manner, and the positioning fixture is characterized by further comprising a buffer mechanism detachably arranged on the clamping jaws (3) and used for preventing a workpiece from deforming;

buffer gear including set up in jack catch (3) are close to rubber slab (7) on lathe body (1) axis one side with set up in jack catch (3) are kept away from stripper plate (8) on lathe body (1) axis one side, stripper plate (8) with link to each other through adjusting part between rubber slab (7).

2. The positioning fixture for the part machining of the numerically controlled lathe is characterized in that the adjusting component comprises a sliding plate (4) and an expansion plate (6), the sliding plate (4) is arranged on the face, away from the lathe body (1), of the clamping jaw (3), the expansion plate (6) is arranged in the sliding plate (4) in a sliding mode, a contraction groove (5) used for the expansion plate (6) to move is formed in the inner wall of the sliding plate (4), the expansion plate (6) is vertically connected with the extrusion plate (8), and the sliding plate (4) is vertically connected with the rubber plate (7).

3. The positioning fixture for numerical control lathe part machining according to claim 2, characterized in that a return spring (11) is arranged between the expansion plate (6) and the innermost wall of the contraction groove (5).

4. The positioning fixture for the part processing of the numerically controlled lathe according to claim 2, characterized in that a rail limiting slide bar (9) is arranged on the side edge of the expansion plate (6), and a rail limiting sliding groove (10) matched with the rail limiting slide bar (9) is arranged in the inner wall of the contraction groove (5).

5. The positioning fixture for numerically controlled lathe part machining according to claim 2, characterized in that the adjusting part further comprises a pressing assembly for enhancing the connection effect between the adjusting part and the jaws (3);

compress tightly the subassembly including set up in supply slide (4) to keep away from the one side shrink frame (13), slide set up in fixed block (14) in shrink frame (13), shrink frame (13) are kept away from supply slide (4) one side is worn to be equipped with screw rod (15), screw rod (15) with rotate between fixed block (14) and connect, expansion plate (6) are kept away from the equidistance is provided with a plurality of fixed orifices (12) in the one side of jack catch (3), fixed block (14) penetrate one of them in fixed orifices (12).

6. The positioning fixture for numerical control lathe part machining according to claim 5, characterized in that the fixing hole (12) and the fixing block (14) are in a right-angled trapezoid shape.