Auxiliary device for machine tool machining

Abstract

The utility model discloses an auxiliary device for machine tool machining, relates to the technical field of machining, and aims to solve the technical problems that when a current clamp is used for clamping a circular workpiece, due to the lack of an adjustable cambered surface matching structure, the contact area between the current clamp and the circular workpiece is lacked in the clamping process, and the stable clamping effect is difficult to keep. Comprising a workbench arranged on a machine tool body, a hydraulic cylinder arranged at the center of the bottom end of the workbench and a coaxial clamping mechanism installed at the center of the top end of the workbench, the coaxial clamping mechanism comprises a base, a plurality of hinge seats are arranged at the top end of the base in an annular array mode, and clamping jaw assemblies are installed in the hinge seats in a hinged mode; according to the in-hole machining and clamping device, the matching cambered surface matching claws are coaxially folded, matching with the cambered surface of the circular workpiece is achieved, the contact area between the in-hole machining and clamping device and the circular workpiece after clamping is guaranteed, and the stability of in-hole machining and clamping is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, and more specifically, to an auxiliary device for machine tool processing. Background Technique

[0002] A machine tool refers to a machine that manufactures machines and machinery, and plays a significant role in the construction of modernization of the machine tool economy. A lathe is a machine tool that mainly uses a turning tool to perform turning processing on a rotating workpiece. Drills, reamers, broaches, taps, dies, and knurling tools can also be used for corresponding processing on a lathe.

[0003] At present, when the current machine tool performs in-hole processing on a circular workpiece, a fixture is often used as an auxiliary device to clamp the circular workpiece to achieve the processing of the inner cavity of the circular workpiece.

[0004] However, in the prior art, for the fixture applied to circular workpieces, when clamping a circular workpiece, due to the lack of an adjustable arc surface fitting structure, the contact area with the circular workpiece is lacking during clamping, so it is difficult to maintain a stable clamping effect during in-hole processing. In view of this, we propose an auxiliary device for machine tool processing. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide an auxiliary device for machine tool processing to solve the technical problem that when the current fixture clamps a circular workpiece, due to the lack of an adjustable arc surface fitting structure, the contact area with the circular workpiece is lacking during the clamping process, and it is difficult to maintain a stable clamping effect.

[0006] To solve the above technical problems, the utility model provides the following technical solution: an auxiliary device for machine tool processing, including a workbench arranged on the machine tool main body, a hydraulic cylinder arranged at the center of the bottom end of the workbench, and a coaxial clamping mechanism installed at the center of the top end of the workbench;

[0007] The coaxial clamping mechanism includes a base, the top end of the base is constructed with a plurality of hinge seats in a circular array, and a clamping jaw assembly is hingedly installed in each of the plurality of hinge seats. A synchronous frame for synchronously driving the plurality of clamping jaw assemblies is slidably arranged among the plurality of clamping jaw assemblies, and the piston rod of the hydraulic cylinder passes through one end of the workbench and is fixedly connected to the synchronous frame. A supporting mechanism for supporting the workpiece is arranged on the top of the base;

[0008] The clamping jaw assembly includes a clamping jaw main body, the clamping jaw main body is hingedly installed in the hinge seat, and a hinge groove is centrally opened at the top end of the clamping jaw main body, and an arc surface fitting jaw is hingedly installed in the hinge groove;

[0009] The arc-shaped mating claw includes an arc-shaped claw. A reset structure is centrally formed on the outer arc surface of the arc-shaped claw, and the reset structure is rotatably arranged in the hinge groove. Arc-shaped inclined surfaces for mating with a circular workpiece are provided at the top and bottom of the inner arc surface of the arc-shaped claw.

[0010] In the utility model, a hydraulic cylinder is used to push a plurality of jaw assemblies arranged in a hinge seat to synchronously close with the help of a synchronous frame, so as to clamp a circular workpiece on a supporting structure. During the clamping process, the arc-shaped claws on the jaw body are pushed by the arc surface of the circular workpiece and rotate in the hinge groove with the help of the reset structure to achieve mating with the upper arc surface of the circular workpiece, ensuring the contact area with the circular workpiece after clamping and ensuring the stability of clamping during hole machining.

[0011] Preferably, the reset structure includes a hinge ear. The hinge ear is centrally formed on the outer edge surface of the arc-shaped claw, and circular grooves are centrally formed on both sides of the hinge ear. A support shaft rotatably arranged in the hinge groove is formed at the center of the circular groove.

[0012] Preferably, grooves coaxial with the support shaft are provided on both sides in the hinge groove. A torsion spring is sleeved on the outer edge surface of the support shaft, and both ends of the torsion spring are respectively connected to one side of the circular groove and the groove.

[0013] Preferably, the synchronous frame includes a synchronous seat. The synchronous seat is connected to one end of the piston rod of the hydraulic cylinder. A plurality of openings are formed in the synchronous seat in an annular array, and a shaft rod is fixedly installed between both sides in the opening.

[0014] Preferably, a guiding groove is centrally and obliquely formed on one side of the jaw body, and the shaft rod is slidably arranged in the guiding groove.

[0015] Preferably, a through groove is formed at the bottom end of one side of the jaw body, and a circular shaft is fixedly installed in the through groove. The circular shaft is rotatably arranged in the hinge seat.

[0016] Preferably, the supporting mechanism includes a plurality of support rods. The plurality of support rods are annularly formed on the top of the base, and a support table is jointly formed at the tops of the plurality of support rods.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model clamps the circular workpiece on the supporting structure by pushing a plurality of jaw assemblies arranged in the hinge seat to close synchronously with the help of a synchronous frame by means of a hydraulic cylinder. During the clamping process, the arc-shaped jaws on the jaw body are pushed by the arc surface of the circular workpiece and rotate in the hinge groove with the help of a reset structure to achieve conformity with the arc surface of the circular workpiece, ensuring the contact area with the circular workpiece after clamping and the stability of clamping during hole machining.

[0019] 2. The utility model also sets the arc surface conforming jaws in the hinge groove of the jaw body. When the hydraulic cylinder pushes the synchronous seat provided with a plurality of shaft rods to move upward, the shaft rods slidingly arranged in the guiding groove push the jaw body to rotate around the circular shaft, so that the jaw body drives the arc-shaped jaws to move towards the circular workpiece, and the arc surface of the circular workpiece pushes the arc-shaped jaws to rotate adaptively around two support shafts. When the clamping is released or the clamping posture is adjusted, the jaw body drives the arc-shaped jaws to move away from the circular workpiece. With the help of two torsion springs, the arc-shaped jaws provided with hinge ears will be reset around two support shafts, realizing the stability of workpiece arc surface conformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the use state of the utility model installed on the machine tool body;

[0021] Figure 2 is a schematic diagram of the structure of the workbench, hydraulic cylinder, and coaxial clamping mechanism of the utility model in a cooperative state;

[0022] Figure 3 is a schematic diagram of the structure of the coaxial clamping mechanism and the hydraulic cylinder of the utility model in a cooperative state;

[0023] Figure 4 is a cross-sectional view of the coaxial clamping mechanism and the hydraulic cylinder of the utility model in a cooperative state;

[0024] Figure 5 is a schematic diagram of the structure of the jaw assembly of the utility model in a disassembled state.

[0025] Description of the reference numerals in the drawings:

[0026] 1. Machine tool body; 2. Workbench; 3. Hydraulic cylinder; 4. Coaxial clamping mechanism; 401. Base; 402. Hinge seat; 403. Synchronous seat; 404. Shaft rod; 405. Support rod; 406. Support table; 5. Jaw assembly; 501. Jaw body; 502. Circular shaft; 503. Guiding groove; 504. Hinge groove; 505. Groove; 6. Arc surface conforming jaw; 601. Arc-shaped jaw; 602. Hinge ear; 603. Support shaft; 604. Torsion spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] AsFigure 1 , Figure 2 As shown in Figure 2 , an auxiliary device for machine tool processing according to the present utility model includes a workbench 2 provided on a machine tool main body 1, a hydraulic cylinder 3 provided at the center of the bottom end of the workbench 2, and a coaxial clamping mechanism 4 installed at the center of the top end of the workbench 2;

[0028] As Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown in Figure 5 , in an embodiment of the present utility model, in order to ensure the contact area with a circular workpiece after clamping to ensure the stability of clamping during hole machining, the coaxial clamping mechanism 4 includes a base 401. A plurality of hinge seats 402 are annularly arranged at the top end of the base 401, and a jaw assembly 5 is hingedly installed in each of the plurality of hinge seats 402. A synchronization frame for synchronously driving the plurality of jaw assemblies 5 is slidably provided between the plurality of jaw assemblies 5, and the piston rod of the hydraulic cylinder 3 passes through one end of the workbench 2 and is fixedly connected to the synchronization frame. A supporting mechanism for supporting the workpiece is provided on the top of the base 401. The supporting mechanism includes a plurality of support rods 405. The plurality of support rods 405 are annularly arranged on the top of the base 401, and a support table 406 is jointly formed at the top ends of the plurality of support rods 405. The jaw assembly 5 includes a jaw body 501. The jaw body 501 is hingedly installed in the hinge seat 402, and a hinge groove 504 is centrally opened at the top end of the jaw body 501. An arc-surface fitting claw 6 is hingedly installed in the hinge groove 504. The arc-surface fitting claw 6 includes an arc-shaped claw 601. A reset structure is centrally formed on the outer arc surface of the arc-shaped claw 601, and the reset structure is rotatably arranged in the hinge groove 504. Arc-shaped inclined surfaces for fitting the circular workpiece are opened at the top and bottom of the inner arc surface of the arc-shaped claw 601. By pushing the plurality of jaw assemblies 5 provided in the hinge seats 402 by the hydraulic cylinder 3 to synchronously close with the help of the synchronization frame, the circular workpiece on the supporting structure is clamped. During the clamping process, the arc-shaped claw 601 on the jaw body 501 is pushed by the arc surface of the circular workpiece and rotates in the hinge groove 504 with the help of the reset structure to achieve fitting with the arc surface on the circular workpiece, ensuring the contact area with the circular workpiece after clamping and ensuring the stability of clamping during hole machining.

[0029] As Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, in the embodiment of the present utility model, to complete the coaxial clamping of a circular workpiece, the synchronous frame includes a synchronous seat 403. The synchronous seat 403 is connected to one end of the piston rod of the hydraulic cylinder 3. A plurality of openings are formed in a circular array on the synchronous seat 403, and a shaft rod 404 is fixedly installed between the two sides inside the opening. A guiding groove 503 is inclinedly formed in the middle of one side of the jaw body 501, and the shaft rod 404 is slidably arranged in the guiding groove 503. A through groove is formed at the bottom end of one side of the jaw body 501, and a round shaft 502 is fixedly installed in the through groove. The round shaft 502 is rotatably arranged in the hinge seat 402. When the hydraulic cylinder 3 pushes the synchronous seat 403 provided with a plurality of shaft rods 404 to move upward, the three jaw bodies 501 are pushed by the three shaft rods 404 slidably arranged in the guiding groove 503 to rotate around the round shaft 502 as the axis, so that the three jaw bodies 501 drive the three arc-shaped claws 601 to move towards the circular workpiece, completing the coaxial clamping of the circular workpiece.

[0030] As Figure 2 , Figure 3 , Figure 5 As shown, in the embodiment of the present utility model, to achieve the stability of the arc surface fitting of the workpiece, the reset structure includes a hinge ear 602. The hinge ear 602 is centrally constructed on the outer edge surface of the arc-shaped claw 601, and circular grooves are centrally formed on both sides of the hinge ear 602. A support shaft 603 rotatably arranged in the hinge groove 504 is constructed at the center of the circular groove. Grooves 505 coaxial with the support shaft 603 are formed on both sides inside the hinge groove 504. A torsion spring 604 is sleeved on the outer edge surface of the support shaft 603, and both ends of the torsion spring 604 are respectively connected to one side of the circular groove and the groove 505. Through the setting of the arc surface fitting claw 6 in the hinge groove 504 on the jaw body 501, when the hydraulic cylinder 3 pushes the synchronous seat 403 provided with a plurality of shaft rods 404 to move upward, the jaw body 501 is pushed by the shaft rod 404 slidably arranged in the guiding groove 503 to rotate around the round shaft 502 as the axis, so that the jaw body 501 drives the arc-shaped claw 601 to move towards the circular workpiece, and the arc surface of the circular workpiece pushes the arc-shaped claw 601 to make an adaptive rotation around the two support shafts 603. When the clamping is released or the clamping posture is adjusted, the jaw body 501 drives the arc-shaped claw 601 to move away from the circular workpiece. With the help of the two torsion springs 604, the arc-shaped claw 601 provided with the hinge ear 602 will be reset around the two support shafts 603, achieving the stability of the arc surface fitting of the workpiece.

[0031] Working principle: This embodiment provides an auxiliary device for machine tool processing. During use, the workpiece is placed on the support table 406, and then the synchronous seat 403 provided with a number of shaft rods 404 is pushed upward by the hydraulic cylinder 3. The shaft rods 404 slidably arranged in the guiding grooves 503 push the jaw body 501 to rotate around the round shaft 502, so that the jaw body 501 drives the arc-shaped claws 601 to move towards the circular workpiece. The arc surface of the circular workpiece pushes the arc-shaped claws 601 to rotate adaptively around the two support shafts 603. The arc-shaped claws 601 with arc-shaped inclined surfaces provided at both the top and the bottom are used to fit the upper arc surface of the circular workpiece, ensuring the contact area with the circular workpiece after clamping and the stability of clamping during hole machining. Thus, the circular workpiece can be machined for holes by the machine tool main body 1. When it is necessary to release the clamping or adjust the clamping posture, the hydraulic cylinder 3 can be used to make the jaw body 501 drive the arc-shaped claws 601 away from the circular workpiece. With the help of the two torsion springs 604, the arc-shaped claws 601 provided with hinge ears 602 will be reset around the two support shafts 603, realizing the stability of the arc surface fitting of the workpiece.

[0032] The embodiments disclosed in this utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of this utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of this utility model, they are within the protection scope of this utility model.

Claims

1. A machine tool processing auxiliary device, characterized in that: It comprises a workbench (2) arranged on a machine tool body (1), a hydraulic cylinder (3) arranged at the center of the bottom end of the workbench (2), and a coaxial clamping mechanism (4) installed at the center of the top end of the workbench (2); The coaxial clamping mechanism (4) comprises a base (401), the top end of the base (401) is configured with a plurality of hinged seats (402) in a circular array, and a plurality of the hinged seats (402) are hingedly mounted with a clamping jaw assembly (5), a synchronous frame for synchronously driving the plurality of clamping jaw assemblies (5) is slidably provided between the plurality of the clamping jaw assemblies (5), and a piston rod of the hydraulic cylinder (3) passes through one end of the workbench (2) and is fixedly connected to the synchronous frame, and a supporting mechanism for supporting a workpiece is provided on the top of the base (401); The clamping jaw assembly (5) comprises a clamping jaw body (501), the clamping jaw body (501) is hingedly mounted in the hinge seat (402), and a hinge groove (504) is centrally provided at the top end of the clamping jaw body (501), and a curved surface anastomotic jaw (6) is hingedly mounted in the hinge groove (504); The arc surface matching claw (6) comprises an arc-shaped claw (601), a reset structure is centrally constructed on the outer arc surface of the arc-shaped claw (601), and the reset structure is rotatably arranged in the hinge groove (504), and the top and bottom of the inner arc surface of the arc-shaped claw (601) are both provided with arc-shaped inclined surfaces for matching circular workpieces.

2. The auxiliary device for machine tool processing according to claim 1, characterized in that: The reset structure comprises a hinged ear (602), wherein the hinged ear (602) is centrally constructed on the outer edge surface of the arc-shaped claw (601), and circular grooves are centrally opened on both sides of the hinged ear (602), and a support shaft (603) rotatably arranged in the hinged groove (504) is constructed at the center of the circular groove.

3. The auxiliary device for machine tool processing according to claim 2, characterized in that: Grooves (505) coaxial with the support shaft (603) are provided on both sides of the hinge groove (504), a torsion spring (604) is sleeved on the outer edge surface of the support shaft (603), and two ends of the torsion spring (604) are respectively connected to the circular groove and one side of the groove (505).

4. The auxiliary device for machine tool processing according to claim 1, characterized in that: The synchronous frame comprises a synchronous seat (403), the synchronous seat (403) and one end of the piston rod of the hydraulic cylinder (3), the synchronous seat (403) is provided with a plurality of openings in a circular array, and a shaft rod (404) is fixedly installed between two sides of the opening.

5. The auxiliary device for machine tool processing according to claim 4, characterized in that: A guide groove (503) is obliquely provided in the center of one side of the clamp body (501), and the shaft (404) is slidably disposed in the guide groove (503).

6. The auxiliary device for machine tool processing according to claim 1, characterized in that: A through groove is provided at the bottom end of one side of the clamp body (501), and a round shaft (502) is fixedly installed in the through groove. The round shaft (502) is rotatably arranged in the hinge seat (402).

7. The auxiliary device for machine tool processing according to claim 1, characterized in that: The supporting mechanism comprises a plurality of supporting rods (405), wherein the plurality of supporting rods (405) are structured in a ring shape on the top of the base (401), and a support platform (406) is commonly structured at the top ends of the plurality of supporting rods (405).

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