CN218836899U

CN218836899U - Clamp for numerical control machine tool

Info

Publication number: CN218836899U
Application number: CN202222121404.9U
Authority: CN
Inventors: 段建卓; 张立肖; 张翠侠; 段灵庞
Original assignee: Zhao County People's Machinery Co ltd
Current assignee: Zhao County People's Machinery Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-04-11
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a clamp for a numerical control machine tool, which comprises a U-shaped seat, the outer wall of the U-shaped seat is fixedly connected with a plurality of fixing lugs, the U-shaped seat is connected with two sliding tables through a bidirectional driving mechanism, the tops of the two sliding tables are symmetrically and fixedly connected with two self-adaptive clamping mechanisms, each self-adaptive clamping mechanism comprises a shell, the inner wall of the shell is fixedly connected with a positioning block, and the outer walls of openings at two sides of the shell are respectively and fixedly connected with a first end cover and a second end cover; the utility model discloses in, when carrying out the centre gripping to heterotypic work piece, earlier rotate two-way screw rod through the hand wheel to two slip tables of cooperation drive that utilize nut and two-way screw rod remove simultaneously, in order to adjust the interval to suitable size, later place the work piece between two slip tables, and remove through hydraulic pressure station control ejector pin, make the ejector pin tightly support behind workpiece surface, keep the oil pressure in first oil pocket and the second oil pocket, in order to fix the ejector pin, can realize the centre gripping to heterotypic work piece.

Description

Clamp for numerical control machine tool

Technical Field

The utility model relates to an anchor clamps specifically are anchor clamps for digit control machine tool.

Background

A numerically controlled machine tool is an automated machine tool equipped with a program control system, which is capable of operating the machine tool and machining parts according to a programmed program. The numerical control machine tool integrates the technologies of machinery, automation, computers, microelectronics and the like, solves the processing problem of complex, precise and small-batch parts, and is a flexible and high-efficiency automatic machine tool.

In numerical control course of working, it is fixed to need to use anchor clamps to treat the processing part to carry out the centre gripping, but most present machine tool fixtures are from centering chuck or parallel jaw vice, the former is used for columniform work piece more, the latter is used for rectangle piece or dysmorphism piece, but because the clamping face of parallel jaw vice is two planes that are parallel to each other, when carrying out the centre gripping to the great arc of radian or other dysmorphism pieces, because the contact surface between anchor clamps and work piece is less, can lead to the stability of centre gripping relatively poor, and can make the work piece take place to warp when the centre gripping dynamics is too big, wait to improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor clamps for digit control machine tool to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an anchor clamps for digit control machine tool, includes U type seat, a plurality of fixed ears of outer wall fixedly connected with of U type seat, U type seat is connected with two slip tables, two through two-way actuating mechanism two self-adaptation fixture of top symmetry fixedly connected with of slip table, self-adaptation fixture includes the casing, the inner wall fixedly connected with locating piece of casing, the both sides opening part outer wall of casing is fixedly connected with first end cover and second end cover respectively, the outer wall of locating piece evenly runs through and is provided with a plurality of through-holes, the inner wall sliding connection of through-hole has the piston, the piston passes through first sealing washer and through-hole sealing connection, the outer wall of piston has linked firmly the ejector pin, the outer wall of second end cover all is provided with the perforation with ejector pin looks adaptation with the department of correspondence of each ejector pin, the perforation is through embedded second sealing washer and ejector pin sealing connection, the outer wall of casing runs through respectively with the both sides that are located the locating piece and is provided with first oil pipe and second oil pipe, first oil pocket and second oil pocket are separated to the inside locating piece of casing, first oil pocket, second oil pocket one-to one.

As a further aspect of the present invention: the outer wall of the ejector rod is sleeved with a spring, and the spring is located between the piston and the second end cover.

As a further aspect of the present invention: the outer wall of the first end cover and the corresponding positions of the pistons are fixedly connected with limiting rods.

As a further aspect of the present invention: the bidirectional driving mechanism comprises a bidirectional screw rod which is connected with the inner wall of the U-shaped seat in a rotating mode, one end of the bidirectional screw rod penetrates through the U-shaped seat and then is detachably connected with a hand wheel, two nuts are sleeved on the outer wall of the bidirectional screw rod in a symmetrical matching mode, and the nuts are fixedly connected with the corresponding sliding table.

As a further aspect of the present invention: the inner wall of U type seat is located two slide bars of bilateral symmetry fixedly connected with of two-way screw rod, two sliding sleeves have all been cup jointed in the outer wall of slide bar, sliding sleeve and the slip table fixed connection that corresponds.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, when carrying out the centre gripping to heterotypic work piece, earlier rotate two-way screw rod through the hand wheel, move simultaneously with two slip tables of cooperation drive that utilize nut and two-way screw rod, adjust to suitable size with two self-adaptation fixture's interval, later place the work piece between two slip tables, and remove through hydraulic pressure station control ejector pin, make the ejector pin tightly support behind the workpiece surface, keep the oil pressure in first oil pocket and the second oil pocket, fix with the ejector pin, can realize the centre gripping to heterotypic work piece.

2. The utility model discloses in, through the setting of spring, can exert thrust to each piston at the in-process in the ejector pin income casing to make the ejector pin stretch out the length of second end cover and keep unanimous gradually, thereby conveniently carry out next clamping, through the setting of gag lever post, can carry on spacingly to the piston in one side of through-hole, thereby avoid the piston to break away from the through-hole.

Drawings

Fig. 1 is a schematic structural diagram of a clamp for a numerical control machine tool.

Fig. 2 is a schematic structural diagram of a bidirectional driving mechanism in a clamp for a numerical control machine tool.

Fig. 3 is an enlarged view of a point a in fig. 1.

Fig. 4 is a schematic diagram of the distribution state of the push rods on the second end cover in the clamp for the numerical control machine tool.

The oil cylinder comprises a U-shaped seat 1, a fixing lug 2, a bidirectional screw 3, a hand wheel 4, a nut 5, a sliding rod 6, a sliding table 7, a shell 8, a first end cover 9, a second end cover 10, a positioning block 11, a first oil pipe 12, a first oil cavity 13, a second oil pipe 14, a second oil cavity 15, a through hole 16, a piston 17, a first sealing ring 18, an ejector rod 19, a second sealing ring 20, a spring 21 and a limiting rod 22.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, in an embodiment of the present invention, a clamp for a numerical control machine tool includes a U-shaped seat 1, a plurality of fixing lugs 2 are fixedly connected to an outer wall of the U-shaped seat 1, the U-shaped seat 1 is connected to two sliding tables 7, two adaptive clamping mechanisms are fixedly connected to a top portion of the sliding tables 7 symmetrically, each adaptive clamping mechanism includes a housing 8, a positioning block 11 is fixedly connected to an inner wall of the housing 8, outer walls of openings at two sides of the housing 8 are respectively and fixedly connected to a first end cap 9 and a second end cap 10, a plurality of through holes 16 are uniformly arranged through the outer wall of the positioning block 11, a piston 17 is slidably connected to an inner wall of the through hole 16, the piston 17 is sealingly connected to the through a first sealing ring 18 and a through hole 16, an ejector rod 19 is fixedly connected to the outer wall of the piston 17, perforations adapted to the ejector rod 19 are arranged at corresponding positions of the outer wall of the second end cap 10 and each ejector rod 19, the perforations are sealingly connected to the ejector rod 19 through a second sealing ring 20, an oil chamber 12 and an oil chamber 14 are arranged on two sides of the housing 8, and an oil chamber 13 and a second positioning block 13, and a second oil chamber 13 are separated one by a second sealing ring 15.

The outer wall of the ejector rod 19 is sleeved with a spring 21, and the spring 21 is positioned between the piston 17 and the second end cover 10.

Through the arrangement of the spring 21, thrust can be applied to each piston 17 in the process of taking the ejector rod 19 into the shell 8, so that the length of the ejector rod 19 extending out of the second end cover 10 is kept consistent gradually, and the next clamping is convenient to carry out.

The outer wall of the first end cover 9 is fixedly connected with a limiting rod 22 at the corresponding position of each piston 17.

By providing the stopper rod 22, the piston 17 can be stopped on one side of the through hole 16, and the piston 17 is prevented from coming off the through hole 16.

Two-way actuating mechanism includes the two-way screw rod 3 of being connected with the inner wall rotation of U type seat 1, the one end of two-way screw rod 3 can be dismantled after running through U type seat 1 and be connected with hand wheel 4, two nuts 5 have been cup jointed to the outer wall symmetry cooperation of two-way screw rod 3, nut 5 and the 7 fixed connection of slip table that correspond.

The bidirectional screw 3 is rotated through the hand wheel 4, and the two sliding tables 7 can be driven to move reversely simultaneously by utilizing the matching of the two nuts 5 and the bidirectional screw 3 so as to adjust the distance between the two self-adaptive clamping mechanisms.

The inner wall of U type seat 1 is located two slide bars 6 of bilateral symmetry fixedly connected with of two-way screw rod 3, two sliding sleeves have all been cup jointed in sliding to the outer wall of slide bar 6, sliding sleeve and the slip table 7 fixed connection that corresponds.

Through the cooperation of slide bar 6 and sliding sleeve, can effectual improvement slip table 7 remove stability, avoid nut 5 and slip table 7 to take place to rotate along with two-way screw rod 3 simultaneously.

The utility model discloses a theory of operation is:

the utility model discloses when using, through defeated oil pipe with two self-adaptation fixture's first oil pipe 12, second oil pipe 14 all with hydraulic pressure station intercommunication back, can be to oiling in first oil pocket 13 and the second oil pocket 15 to promote piston 17 and slide in through-hole 16 through the hydraulic pressure oil mass in controlling first oil pocket 13 and the second oil pocket 15, thereby control ejector pin 19 removes.

When clamping a special-shaped workpiece, the bidirectional screw 3 is rotated through the hand wheel 4, the two sliding tables 7 are driven to move simultaneously by utilizing the matching of the nut 5 and the bidirectional screw 3, the distance between the two self-adaptive clamping mechanisms is adjusted to a proper size, then the workpiece is placed between the two sliding tables 7, and the ejector rod 19 is controlled to move through the hydraulic station, so that the ejector rod 19 is tightly abutted to the surface of the workpiece, the oil pressure in the first oil cavity 13 and the oil pressure in the second oil cavity 15 are kept, the ejector rod 19 is fixed, the clamping of the special-shaped workpiece can be realized, and when the clamping effect is stable, the damage to the workpiece can be reduced.

The utility model discloses in, through the setting of spring 21, can exert thrust to each piston 17 at the in-process of 19 income casings 8 of ejector pin to make 19 lengths that stretch out second end cap 10 keep unanimous gradually of ejector pin, thereby conveniently carry out the clamping next time, through the setting of gag lever post 22, can carry on spacingly to piston 17 in one side of through-hole 16, thereby avoid piston 17 to break away from through-hole 16.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a anchor clamps for digit control machine tool which characterized in that: including U type seat (1), a plurality of fixed ears of outer wall fixedly connected with (2) of U type seat (1), U type seat (1) is connected with two slip tables (7), two through two-way actuating mechanism two self-adaptation fixture of top symmetry fixedly connected with of slip table (7), self-adaptation fixture includes casing (8), the inner wall fixedly connected with locating piece (11) of casing (8), the both sides opening part outer wall of casing (8) is fixedly connected with first end cover (9) and second end cover (10) respectively, the outer wall of locating piece (11) evenly runs through and is provided with a plurality of through-holes (16), the inner wall sliding connection of through-hole (16) has piston (17), piston (17) are through first sealing washer (18) and through-hole (16) sealing connection, the outer wall fixedly connected with ejector pin (19) of piston (17), the outer wall of second end cover (10) and the department of correspondence of each ejector pin (19) all are provided with the perforation with ejector pin (19) looks adaptation, perforation is through embedded second sealing washer (20) and oil pipe (19) sealing connection, the outer wall of perforation is located the casing (8) and the second locating piece (11) and the second side is provided with embedded separation of second (11) respectively and second oil chamber (11) and is separated and is provided with second locating piece (11) and is separated by second (11), the second locating piece (11) and is separated ) The first oil pipe (12) and the second oil pipe (14) correspond to the first oil cavity (13) and the second oil cavity (15) one by one.

2. The jig for numerical control machine tools according to claim 1, characterized in that: the outer wall of the ejector rod (19) is sleeved with a spring (21), and the spring (21) is located between the piston (17) and the second end cover (10).

3. The jig for numerical control machine tools according to claim 2, characterized in that: the outer wall of the first end cover (9) is fixedly connected with a limiting rod (22) at the corresponding position of each piston (17).

4. The jig for numerical control machine tools according to claim 1, characterized in that: two-way actuating mechanism includes two-way screw rod (3) of being connected with the inner wall rotation of U type seat (1), the one end of two-way screw rod (3) is run through and can be dismantled after U type seat (1) and be connected with hand wheel (4), two nuts (5) have been cup jointed in the outer wall symmetry cooperation of two-way screw rod (3), slip table (7) fixed connection of nut (5) and correspondence.

5. The jig for numerical control machine tools according to claim 4, characterized in that: the inner wall of U type seat (1) is located two slide bars (6) of bilateral symmetry fixedly connected with of two-way screw rod (3), the outer wall of slide bar (6) all slides and has cup jointed two sliding sleeves, sliding sleeve and slip table (7) fixed connection that corresponds.