CN221088008U

CN221088008U - Fastening clamp for numerical control turning center

Info

Publication number: CN221088008U
Application number: CN202322795652.6U
Authority: CN
Inventors: 张友荣; 曹卫锋; 佘俊锋; 黄洪燕
Original assignee: Xi'an Qing'an Aviation Machinery Manufacturing Co ltd
Current assignee: Xi'an Qing'an Aviation Machinery Manufacturing Co ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-06-07
Anticipated expiration: 2033-10-18

Abstract

The utility model discloses a fastening clamp for a numerical control turning center, which relates to the technical field of numerical control turning centers and comprises a fixed table, wherein a fixed frame and an electric push rod are respectively arranged on opposite sides of the fixed table, a screw rod is arranged at the top end of the fixed frame in a threaded manner, a motor is arranged at the top end of the screw rod, the bottom end of the screw rod stretches into the fixed frame, a bearing is arranged at the bottom end of the screw rod, an upper clamping plate is arranged at the lower end of the bearing, first connecting rods are respectively arranged on two corresponding sides of the bearing, a supporting rod is hinged to one end of each first connecting rod far away from the bearing, sleeves are respectively hinged to the other end of each supporting rod, side clamping plates are respectively arranged on opposite sides of the two sleeves, a lower clamping plate is arranged at the bottom end in the fixed frame, and the positions of the lower clamping plate and the upper clamping plate correspond to each other; the fixed station between the electric push rod and the fixed frame is provided with a clamping cylinder, a plurality of supporting blocks are arranged on the outer wall of the clamping cylinder in a sliding way, the telescopic end of the electric push rod is connected with a movable rod, the movable rod is arranged in the clamping cylinder in a sliding way, and the outer wall of the movable rod is connected with one side of the supporting block towards the clamping cylinder in a sliding way.

Description

Fastening clamp for numerical control turning center

Technical Field

The utility model relates to the technical field of numerical control turning centers, in particular to a fastening clamp for a numerical control turning center.

Background

The numerical control turning center is also used for machining the rotating surface of the part, like a common lathe. The processing of the outer cylindrical surface, the conical surface, the spherical surface and the threads can be automatically completed, and complex revolution surfaces such as hyperboloid surfaces and the like can be processed. When a workpiece is machined on a machine tool, a fixture is required to be used for positioning and clamping the workpiece before machining in order to enable the surface of the workpiece to meet the technical requirements of the size, the geometric shape, the mutual position precision with other surfaces and the like specified by a drawing. However, the conical cylindrical workpiece is special in shape, the conical cylindrical workpiece is not convenient to clamp by a common clamp, the conical cylindrical workpiece is easy to shift in position during clamping and fixing, the unstable clamping is caused, and the machining effect of the workpiece is affected.

To this, patent CN215788356U discloses a numerical control turning thin wall awl cylindric work piece centre gripping frock, including the workstation, the top fixedly connected with fixed plate of workstation, the right side fixedly connected with rubber pad of fixed plate, the left side fixedly mounted of fixed plate has the pneumatic cylinder, the left end fixedly connected with fly leaf of pneumatic cylinder, the right side fixedly connected with movable rod of fly leaf. This patent is through mutually supporting between fixed plate, pneumatic cylinder, fly leaf, movable rod, activity spacing ring, electric putter, briquetting, rubber piece and the disc, can fix the right side at the fixed plate with awl cylindric work piece, and through mutually supporting between activity spacing ring and the disc, can carry out spacing fixedly to awl cylindric work piece to can improve the fixed effect to awl cylindric work piece, prevent the condition that the position deviation appears to awl cylindric work piece.

However, the above patent is not applicable to a workpiece requiring an end surface processing because the end surface of the workpiece is overlapped with the rubber block and cannot be processed when the workpiece is clamped.

Disclosure of Invention

The utility model aims at the problems and provides a fastening clamp for a numerical control turning center, which solves the problem that the end face cannot be machined in the background technology.

The utility model adopts the technical scheme that: the utility model provides a numerical control turning center fastening fixture, includes the fixed station, opposite one side of fixed station is equipped with mount and electric putter respectively, the top screw thread of mount is equipped with the lead screw, the top of lead screw is equipped with the motor, the bottom of lead screw stretches into in the mount, and the bottom of lead screw is equipped with the bearing, the lower extreme of bearing is equipped with the punch holder, and the corresponding both sides of bearing all are equipped with first connecting rod, the one end that the bearing was kept away from to first connecting rod all articulates there is the bracing piece, the other end of bracing piece all articulates there is the sleeve, two telescopic opposite one side all is equipped with the side splint, both ends all are equipped with the mounting groove about in the mount, two sleeves slide respectively and set up in two the mounting groove, the bottom of mount is equipped with the lower plate, the position correspondence of lower plate and punch holder;

The fixed station between the electric push rod and the fixed frame is provided with a clamping cylinder, a plurality of supporting blocks are arranged on the outer wall of the clamping cylinder in a sliding manner at intervals, the telescopic end of the electric push rod is connected with a movable rod, the movable rod is arranged in the clamping cylinder in a sliding manner, and the outer wall of the movable rod is connected with one side of the supporting blocks, facing the clamping cylinder, in a sliding manner.

Further, the number of the abutting blocks in each group is a plurality, and the abutting blocks in the same group are uniformly distributed on the same diameter of the clamping cylinder in a circumference manner.

Still further, the outer wall of clamping cylinder is equipped with respectively with support a plurality of second spouts of piece matched with, be equipped with spring and tight pulley in the second spout respectively, the both ends of spring respectively with the inside wall of second spout and the outer wall connection of tight pulley, the tight pulley slides and sets up in the second spout, the both ends of tight pulley all rotate and are connected with a rotation wheel, two be equipped with the second connecting rod between the outer wall of rotation wheel, the other end of second connecting rod is equipped with the axis of rotation, the axis of rotation rotates with support the piece to be connected.

Further, one side of each abutting block, facing the clamping cylinder, is rotatably provided with a ball, and the ball is movably abutted with the movable rod; and the periphery of each rotating wheel is provided with a wear-resisting pad.

Furthermore, first sliding grooves are formed in the two corresponding sides in the fixing frame, and the end portions of the first connecting rods are arranged in the first sliding grooves in a sliding mode.

Further, one end of the sleeve, far away from the side clamping plate, is slidably provided with a fixing rod, and the other end of the fixing rod is fixedly connected with the inner wall of the mounting groove.

The utility model has the advantages that:

According to the utility model, the clamping cylinder is stretched into the conical cylindrical workpiece during fastening, the electric push rod drives the movable rod to move towards the inside of the clamping cylinder, the movable rod contacts with the balls and rotates in the moving process of the movable rod, and the outer side of the supporting block clamping cylinder is pushed to move, so that the supporting block is abutted against the inner wall of the conical cylindrical workpiece, and the inner wall of the conical cylindrical workpiece is expanded; simultaneously, the motor is started to drive the screw rod, the bearing, the first connecting rod and the upper clamping plate to move downwards, so that the upper clamping plate and the lower clamping plate clamp the upper side and the lower side of the conical cylindrical workpiece, and when the first connecting rod moves downwards, the supporting rods push the sleeves on the two sides to approach each other, so that the side clamping plates on the two sides clamp the left side and the right side of the conical cylindrical workpiece; according to the utility model, the upper side, the lower side, the left side and the right side of the conical cylindrical workpiece are clamped, and the inner wall of the conical cylindrical workpiece is fixed through the abutting blocks, so that the end face of the workpiece is positioned at the outer side of the fixing frame, the end face is convenient to process, and the applicability is improved.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure within the mounting of the present utility model;

FIG. 3 is a schematic view of the connection of the sleeve and the fixing rod of the present utility model;

FIG. 4 is a schematic illustration of the connection of the clamping cylinder and the movable rod of the present utility model;

FIG. 5 is a schematic view of the structure at A in FIG. 4;

fig. 6 is a schematic diagram of the connection of the rotating wheel to the rotating shaft of the present utility model.

Reference numerals:

The device comprises a fixed table, a 2-fixed frame, a 3-motor, a 4-bearing, a 5-first connecting rod, a 6-first sliding chute, a 7-screw rod, an 8-upper clamping plate, a 9-supporting rod, a 10-sleeve, an 11-side clamping plate, a 12-fixed rod, a 13-mounting groove, a 14-lower clamping plate, a 15-electric push rod, a 16-clamping cylinder, a 17-abutting block, a 18-movable rod, a 19-second sliding chute, a 20-spring, a 21-fixed wheel, a 22-rotating wheel, a 23-second connecting rod, a 24-rotating shaft, 25-balls and a 26-wear pad.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 to 6, a fastening clamp for a numerical control turning center comprises a fixed table 1, wherein a fixed frame 2 and an electric push rod 15 are respectively installed on opposite sides of the fixed table 1, a screw rod 7 is installed on the top end of the fixed frame 2 in a threaded manner, a motor 3 is fixedly connected to the top end of the screw rod 7, the bottom end of the screw rod 7 extends into the fixed frame 2, a bearing 4 is installed at the bottom end of the screw rod 7, an upper clamping plate 8 is installed at the lower end of the bearing 4 through a connecting plate, a first connecting rod 5 is fixedly connected to corresponding two sides of the bearing 4, a supporting rod 9 is hinged to one end, far away from the bearing, of the first connecting rod 5, a sleeve 10 is hinged to the other end of the supporting rod 9, side clamping plates 11 are fixedly connected to opposite sides of the two sleeves 10, mounting grooves 13 are respectively arranged at the left end and the right end in the fixed frame 2, a lower clamping plate 14 is installed at the bottom end in the fixed frame 2 in a sliding manner, and the positions of the lower clamping plate 14 and the upper clamping plate 8 correspond to each other; the electric putter 15 passes through the mount table to be installed on fixed station 1, and the mount table is close to one side of mount 2 and installs a clamping cylinder 16, and the outer wall interval slip of clamping cylinder 16 is equipped with multiunit and supports piece 17, and the flexible end of electric putter 15 is connected with movable rod 18, and movable rod 18 slides and sets up in clamping cylinder 16, and the outer wall of movable rod 18 with support piece 17 towards one side sliding connection of clamping cylinder 16. Preferably, the number of the abutting blocks 17 in each group is a plurality, and the abutting blocks 17 in the same group are uniformly distributed on the same diameter of the clamping cylinder 16 in a circumference manner.

During fastening, the clamping cylinder 16 stretches into the conical cylindrical workpiece, the end face of the clamping cylinder 16 is located on one side, far away from the electric push rod 15, of the fixing frame 2, the electric push rod 15 drives the movable rod 18 to move towards the inside of the clamping cylinder 16, the movable rod 18 pushes the plurality of abutting blocks 17 to move towards the outer side of the clamping cylinder 16 until the plurality of abutting blocks 17 located on the same radial direction are attached to the inner wall of the conical cylindrical workpiece, the conical cylindrical workpiece is expanded, the motor 3 is started, the screw rod 2, the bearing 4, the first connecting rod 5 and the upper clamping plate 8 are driven to move downwards, the upper clamping plate 8 and the lower clamping plate 14 clamp the upper side and the lower side of the conical cylindrical workpiece, and when the first connecting rod 5 moves downwards, the supporting rods 9 push the sleeves 10 on the two sides to be close to each other, so that the side clamping plates 11 on the two sides clamp the left side and the right side of the conical cylindrical workpiece.

In the embodiment, the fixing table 1 can be fixedly arranged on an operation table of the numerical control turning center, and can also be detachably arranged on the operation table of the numerical control turning center through bolts, so that the fixing of the fixed cone cylindrical workpiece can be conveniently carried out by using the embodiment in the subsequent processing; the fixing frame 2 and the electric push rod 15 can be fixedly arranged on the fixing table 1, preferably, the fixing frame 2 and the electric push rod 15 are slidably arranged on the fixing table 1 through sliding blocks, in particular, a groove is formed in the fixing table, a bidirectional screw rod is rotatably arranged in the groove, two sliding blocks are arranged at two ends of the bidirectional screw rod in a threaded manner, the fixing frame 2 and the electric push rod 15 are respectively fixedly arranged above the two sliding blocks, and the bidirectional screw rod is driven to rotate through a hand wheel or a motor, so that the sliding blocks drive the fixing frame 2 and the electric push rod 15 to be close to or far away from each other, and the electric push rod is suitable for conical cylindrical workpieces with different lengths; at the moment, the clamping cylinder 16 is also slidably arranged on the fixed table 1 through a one-way screw rod and a sliding block, and the positions of the fixed frame 2 and the clamping cylinder 16 can be adjusted according to the conical cylindrical workpiece to be processed, so that the fixed position can be adjusted according to the processing position of the conical cylindrical workpiece; the clamping cylinder 16 and the end of the movable rod 18 extending into the clamping cylinder 16 can be cylindrical or conical, and preferably both the clamping cylinder 16 and the movable rod are conical, so that the supporting block 17 can fix a plurality of parts of the inner wall of the workpiece, and the fastening effect is improved.

The outer wall of the clamping cylinder 16 is respectively provided with a plurality of second sliding grooves 19 matched with the abutting blocks 17, the second sliding grooves 19 are respectively provided with a spring 20 and a fixed wheel 21, two ends of the spring 20 are respectively fixedly connected with the inner side wall of the second sliding grooves 19 and the outer wall of the fixed wheel 21, the fixed wheel 21 is arranged in the second sliding grooves 19 in a sliding manner, two ends of the fixed wheel 21 are respectively and rotatably connected with a rotating wheel 22, a second connecting rod 23 is fixedly connected between the outer walls of the two rotating wheels 22, the other end of the second connecting rod 23 is provided with a rotating shaft 24, and the rotating shaft 24 is rotatably connected with the abutting blocks 17; one side of each abutting block 17 facing the clamping cylinder 16 is rotatably provided with a ball 25, and the ball 25 abuts against the movable rod 18; each rotating wheel 22 is adhered with a wear-resistant pad 26 at its periphery to prevent damage to the rotating wheel 22 due to friction during sliding. The movable rod 18 contacts with the ball 25 and rotates when moving towards the clamping cylinder 16, meanwhile, the abutting block 17 is pushed to move towards the outer side of the clamping cylinder 16, the abutting block 17 drives the rotating shaft 24 to rotate, the fixed wheel 21 and the rotating wheel 22 are driven to slide in the second sliding groove 19 through the connecting rod 15, and the spring 20 is stretched to deform; after the machining is finished, the electric push rod 15 is stopped, the movable rod 18 moves to the side of the electric push rod 15, the spring 20 recovers deformation and drives the fixed wheel 21 and the rotating wheel 22 to slide to the inner side of the second sliding groove 19, and the abutting block 17 is pushed to move to the inner side of the clamping cylinder 16 through the second connecting rod 23 and the rotating shaft 24, so that the abutting block 17 releases the clamping of the workpiece.

The corresponding two sides in the fixed frame 2 are respectively provided with a first chute 6, and the end part of the first connecting rod 5 is arranged in the first chute 6 in a sliding way; the sleeve 10 is far away from the one end slidable mounting of side splint 11 and has dead lever 12, and the other end of dead lever 12 and the inner wall fixed connection of mounting groove 13, and when motor 3 drove first connecting rod 5 and move down in first spout 6, promote sleeve 10 along dead lever 12 of both sides through bracing piece 9 removal.

The working process of the utility model comprises the following steps: when in fastening, the clamping cylinder 16 stretches into the conical cylindrical workpiece, the electric push rod 15 drives the movable rod 18 to move towards the inside of the clamping cylinder 16, the movable rod 18 contacts with the balls 25 in the moving process and rotates the balls, and the plurality of abutting blocks 17 are pushed to move towards the outer side of the clamping cylinder 16 until the plurality of abutting blocks 17 positioned on the same radial direction are attached to the inner wall of the conical cylindrical workpiece, so that the conical cylindrical workpiece is limited and fixed; simultaneously, the motor 3 is started to drive the screw rod 2, the bearing 4, the first connecting rod 5 and the upper clamping plate 8 to move downwards, so that the upper clamping plate 8 and the lower clamping plate 14 clamp the upper side and the lower side of the conical cylindrical workpiece, and when the first connecting rod 5 moves downwards, the sleeves 10 on the two sides are pushed to be close to each other by the supporting rods 9, so that the side clamping plates 11 on the two sides clamp the left side and the right side of the conical cylindrical workpiece; when the supporting block 17 moves to the outer side of the clamping cylinder 16, the rotating shaft 24 is driven to rotate, and the connecting rod 15 drives the fixed wheel 21 and the rotating wheel 22 to slide in the second sliding groove 19, so that the spring 20 is stretched and deformed; after the machining is finished, the motor 3 is reversely rotated to drive the screw rod 2, the bearing 4, the first connecting rod 5 and the upper clamping plate 8 to move upwards, so that the upper clamping plate 8 and the lower clamping plate 14 release the clamping of the upper side and the lower side of the conical cylindrical workpiece, and when the first connecting rod 5 moves upwards, the sleeves 10 on the two sides are pushed to deviate from each other through the supporting rods 9, so that the side clamping plates 11 on the two sides release the left side and the right side of the conical cylindrical workpiece; meanwhile, the electric push rod 15 stops, the movable rod 18 moves to one side of the electric push rod 15, the spring 20 recovers deformation and drives the fixed wheel 21 and the rotating wheel 22 to slide to the inner side of the second chute 19, and the abutting block 17 is pushed to move to the inner side of the clamping cylinder 16 through the second connecting rod 23 and the rotating shaft 24, so that the abutting block 17 releases the clamping of a workpiece.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a numerical control turning center fastening fixture, includes fixed station (1), its characterized in that, opposite one side of fixed station (1) is equipped with mount (2) and electric putter (15) respectively, the top screw thread of mount (2) is equipped with lead screw (7), the top of lead screw (7) is equipped with motor (3), and in stretching into mount (2) in the bottom of lead screw (7), and the bottom of lead screw (7) is equipped with bearing (4), the lower extreme of bearing (4) is equipped with punch holder (8), and the corresponding both sides of bearing (4) all are equipped with first connecting rod (5), the one end that first connecting rod (5) kept away from the bearing all articulates has bracing piece (9), the other end of bracing piece (9) all articulates there is sleeve (10), and two opposite one side of sleeve (10) all is equipped with side splint (11), both ends all are equipped with mounting groove (13) about in mount (2), two sleeve (10) slip respectively set up in two mounting groove (13), the bottom in mount (2) is equipped with lower splint (14), the position that corresponds to punch holder (8);

Be equipped with centre gripping section of thick bamboo (16) on fixed station (1) between electric putter (15) and mount (2), the outer wall interval slip of centre gripping section of thick bamboo (16) is equipped with multiunit and supports piece (17), the flexible end of electric putter (15) is connected with movable rod (18), movable rod (18) slip sets up in centre gripping section of thick bamboo (16), and the outer wall of movable rod (18) with support one side sliding connection of piece (17) towards centre gripping section of thick bamboo (16).

2. The fastening clamp for a numerical control turning center according to claim 1, characterized in that the number of the abutment blocks (17) in each group is several, and the abutment blocks (17) in the same group are uniformly circumferentially distributed on the same diameter of the clamping cylinder (16).

3. The numerical control turning center fastening fixture according to claim 2, characterized in that the outer wall of the clamping cylinder (16) is respectively provided with a plurality of second sliding grooves (19) matched with the supporting blocks (17), springs (20) and fixed wheels (21) are respectively arranged in the second sliding grooves (19), two ends of each spring (20) are respectively connected with the inner side walls of the second sliding grooves (19) and the outer wall of the fixed wheel (21), the fixed wheels (21) are slidably arranged in the second sliding grooves (19), two ends of each fixed wheel (21) are respectively connected with one rotating wheel (22) in a rotating mode, a second connecting rod (23) is arranged between the outer walls of the two rotating wheels (22), the other end of each second connecting rod (23) is provided with a rotating shaft (24), and the rotating shaft (24) is rotationally connected with the supporting blocks (17).

4. A fastening clamp for a digital control turning center according to claim 3, characterized in that a ball (25) is rotatably arranged on one side of each abutting block (17) facing the clamping cylinder (16), and the ball (25) is movably abutted with the movable rod (18); and the periphery of each rotating wheel (22) is provided with a wear-resistant pad (26).

5. The fastening clamp for the numerical control turning center according to any one of claims 1 to 4, wherein first sliding grooves (6) are formed in two corresponding sides in the fixing frame (2), and the end portion of the first connecting rod (5) is slidably arranged in the first sliding grooves (6).

6. The numerical control turning center fastening clamp according to claim 5, characterized in that a fixing rod (12) is slidably mounted at one end of the sleeve (10) far away from the side clamping plate (11), and the other end of the fixing rod (12) is fixedly connected with the inner wall of the mounting groove (13).