CN221248475U - Self-centering clamp for fastener machining - Google Patents

Abstract

The utility model discloses a self-centering clamp for fastener machining, which is characterized by comprising the following components: the base, the through-hole has been seted up on the top of base, the top of base is installed a plurality of rotatable cohesion device along circumference equidistance, and the free end of cohesion device is equidistant along circumference setting for the centre of a circle of through-hole, wherein, cohesion device is first centre gripping arm, second centre gripping arm and third centre gripping arm; the inner cavity of the base is provided with a blind groove, and the inner cavity of the blind groove is rotatably provided with a second turntable. This fastener processing is with self-centering anchor clamps, in-service use, can carry out circumference to the fastener and press from both sides tightly or release, easy and simple to handle, work piece that simultaneously can adapt to different diameters and press from both sides tightly stably, the commonality is high, can also make in succession to press from both sides tight position accurate fastener of sending into to wait to process or shift, the processing demand of serialization of being convenient for.

Description

Self-centering clamp for fastener machining

Technical Field

The utility model relates to the technical field of fastener clamps, in particular to a self-centering clamp for fastener machining.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application, has wide application industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, meters, articles and the like, and is the most widely applied mechanical base part; the method is characterized by various varieties and specifications, various performance uses, and extremely high standardization, serialization and universalization degrees; the fastener generally comprises: bolts, studs, screws, nuts, self-tapping screws, washers, check rings, pins, rivets, assemblies and sub-assemblies, and welding nails; the fastener is various, but its shape is circular or regular prism shape, therefore need the special anchor clamps that can adapt with it when pressing from both sides tightly, the open and shut adjustment of general class anchor clamps clamping part that uses at present is comparatively difficult, is inconvenient for press from both sides fast tight or release work piece, and common anchor clamps need the manual work to take the preceding work piece off before put into with follow-up work piece again, because the body of fastener is less, the manual hand is taken out easily, is unfavorable for continuous processing work, based on above-mentioned problem, the present provides a fastener processing is with from centering anchor clamps.

Disclosure of utility model

The utility model aims to provide a self-centering clamp for fastener machining, which solves the problems that the prior equipment provided in the background art is inconvenient to clamp or release a workpiece quickly and the workpiece is easy to take off by manual hand, and is unfavorable for continuous machining work.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a self-centering fixture for fastener machining, comprising: the base, the through-hole has been seted up on the top of base, a plurality of rotatable cohesion device is installed along circumference equidistance on the top of base, and the free end of cohesion device sets up along circumference equidistance for the centre of a circle of through-hole, wherein, cohesion device is first arm, second arm and third arm.

The inner cavity of the base is provided with a blind groove, the inner cavity of the blind groove is rotatably provided with a second turntable, the circumference of the outer wall eye of the second turntable is provided with a plurality of station grooves at equal intervals, and the station grooves correspond to the through holes.

Preferably, the top of base rotatable installs first roating seat, second roating seat and third roating seat respectively, and first roating seat, second roating seat and third roating seat respectively with second centre gripping arm, first centre gripping arm and third centre gripping arm fixed connection, the one end of linking arm is still installed to the outer wall of first roating seat, and the one end of first connecting rod is installed through the round pin axle to the other end of linking arm, and the other end of first connecting rod pass through the round pin axle with the outer wall of third roating seat links to each other, the one end of second connecting rod is installed through the round pin axle to the outer wall of first roating seat, and the other end of second connecting rod pass through the round pin axle with the second roating seat links to each other.

Preferably, the outer wall of base has been seted up the drive chamber, but the inner chamber of drive chamber side-to-side movable installs the removal seat, the spacing groove has been seted up to the outer wall of removal seat, the slider is installed to the link bottom of first connecting rod and linking arm, and slider slidable inlay in the inner chamber of spacing groove, first auto-lock cylinder is installed on the right side of base, and the output of first auto-lock cylinder with the outer wall fixed connection of spacing groove.

Preferably, the inner cavity of the driving cavity is symmetrically provided with two positioning rods, and the outer wall of the movable seat is slidably sleeved on the outer wall of the positioning rods.

Preferably, the inner chamber rotatable first carousel of installing of blind groove, first carousel links to each other with the second carousel, and first carousel with the second carousel concentric setting, a plurality of draw-in groove has been seted up along circumference to the top of first carousel, a plurality of second stopper is still installed on the top of first carousel, and a plurality of draw-in groove and a plurality of second stopper are crisscross to be set up each other.

Preferably, the motor is installed on the top of base, the output of motor extends into blind groove's inner chamber, rotating assembly is installed through the shaft coupling to the output of motor, rotating assembly's outer wall relative position is driving lever and first stopper respectively, driving lever slidable inlay in the inner chamber of draw-in groove.

Preferably, the bottom of the base is provided with a second self-locking cylinder, the output end of the second self-locking cylinder extends into the inner cavity of the push plate, the output end of the second self-locking cylinder is provided with the push plate, and the push plate corresponds to the position of the through hole.

Compared with the prior art, the utility model has the beneficial effects that: this fastener processing is with self-centering anchor clamps, it is with the work piece lifting of current station groove inner chamber to drive the push pedal through the second self-locking cylinder, make the work piece pass the inner chamber of through-hole, make first self-locking cylinder drive the movable seat left-hand movement, make first roating seat, second roating seat and third roating seat take place to rotate respectively, thereby utilize first centre gripping arm, second centre gripping arm and third centre gripping arm carry out self-centering clamp to the work piece, first self-locking cylinder is retracted releasable work piece, the second self-locking cylinder resets the back, the motor drives rotating assembly and rotates, utilize the cooperation of driving lever and draw-in groove to stir first carousel and rotate, thereby make the second carousel rotatory, make just next station groove correspond with the through-hole, in the in-service use, can carry out circumference clamp fast or release to the fastener, easy and simple to handle, simultaneously work piece and the clamp of adaptation different diameters is stable, the commonality is high, can also make in succession to the accurate fastener of sending into to be processed or shift to the clamping position, the processing demand of serialization of being convenient for.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a top view of a first turntable according to the present utility model.

FIG. 3 is a schematic view of the released state of the workpiece according to the present utility model.

Fig. 4 is a front view of a second self-locking cylinder of the present utility model.

In the figure: 1. the device comprises a base, 2a, a first clamping arm, 2b, a second clamping arm, 2c, a third clamping arm, 3, a first rotating seat, 4, a second rotating seat, 5, a third rotating seat, 6, a connecting arm, 7, a first connecting rod, 8, a second connecting rod, 9, a through hole, 10, a driving cavity, 11, a moving seat, 12, a limiting groove, 13, a first self-locking cylinder, 14, a positioning rod, 15, a motor, 16, a rotating assembly, 16a, a deflector rod, 16b, a first limiting block, 17, a first rotating disc, 18, a clamping groove, 19, a second limiting block, 20, a second rotating disc, 21, a station groove, 22, a blind groove, 23, a second self-locking cylinder, 24 and a push plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a self-centering fixture for fastener processing, which comprises: a self-centering fixture for fastener machining, comprising: the base 1, the top of the base 1 is provided with a through hole 9, the inner cavity of the base 1 is provided with a blind groove 22, the inner cavity of the blind groove 22 is rotatably provided with a second rotary table 20, the circumference of the outer wall of the second rotary table 20 is equidistantly provided with a plurality of station grooves 21, the station grooves 21 are ring pieces with openings at the upper end and the lower end, the bottom end of the inner cavity of the blind groove 22 and the inner wall of the station groove 21 are utilized to limit, the workpiece at the inner side of the station groove 21 is ensured to move along with the rotation of the second rotary table 20, the station groove 21 corresponds to the through hole 9, the bottom end of the base 1 is provided with a second self-locking cylinder 23, the output end of the second self-locking cylinder 23 extends into the inner cavity of a push plate 24, the output end of the second self-locking cylinder 23 is provided with the push plate 24, and the push plate 24 corresponds to the position of the through hole 9, a fastener to be processed is placed in the station groove 21 at the position opposite to the through hole 9 in advance, the second self-locking cylinder 23 is started to enable the push plate 24 to move upwards, the fastener at the current position is ejected upwards, when the fastener passes through the inner cavity of the through hole 9 and is positioned at the top end of the base 1, the output end of the second self-locking cylinder 23 is locked, self-centering clamping can be carried out on the fastener at the moment, then processing operation can be started, the second self-locking cylinder 23 is reset after processing, a workpiece returns to the inner cavity of the station groove 21, the second turntable 20 rotates to remove the finished workpiece, and the subsequent workpiece is moved to the processing position, wherein the clamping scheme is as follows:

The top of base 1 rotatable installs first roating seat 3, second roating seat 4 and third roating seat 5 respectively, and first roating seat 3, second roating seat 4 and third roating seat 5 respectively with second centre gripping arm 2b, first centre gripping arm 2a and third centre gripping arm 2c fixed connection, second centre gripping arm 2b, first centre gripping arm 2a and third centre gripping arm 2c constitute the embracing device that is used for clamping fastener jointly, and second centre gripping arm 2b, free end of first centre gripping arm 2a and third centre gripping arm 2c sets up along circumference equidistance for the centre of a circle of through-hole 9, the one end of linking arm 6 is still installed to the outer wall of first roating seat 3, and the other end of linking arm 6 is installed the one end of first connecting rod 7 through the round pin axle, and the other end of first connecting rod 7 links to each other with the outer wall of third roating seat 5, the outer wall of first roating seat 3 is installed the one end of second connecting rod 8 through the round pin axle, and the other end of second connecting rod 8 links to each other with second roating seat 4 through the round pin axle, and when first roating seat 3, second roating arm 2a and third roating seat 4, can make the first roating seat 2a and third roating seat 2c realize that the link to the second roating seat 2 can be moved to the first rotary seat 5, can realize the link to the second roating seat 7 and the second roating seat 5, can realize the link to the first roating seat 5, the link to the second roating seat 5, the link can be released to the second roating seat 5, and the second link the first connecting seat 5, and the link 5 can realize the link to the first roating seat 5, and the second rotary seat 5, and the second link 5 can be realized.

As a preferred solution, a driving assembly capable of driving the connection ends of the first link 7 and the connection arm 6 to move left and right is mounted on the right side of the base 1.

The driving assembly comprises a driving cavity 10 arranged on the outer wall of the base 1, a movable seat 11 is arranged in the inner cavity of the driving cavity 10 in a left-right movable mode, a limit groove 12 is arranged on the outer wall of the movable seat 11, a sliding block is arranged at the bottom end of the connecting end of the first connecting rod 7 and the connecting arm 6, the sliding block is slidably embedded in the inner cavity of the limit groove 12, when the movable seat 11 moves left and right, the connecting end of the first connecting rod 7 and the connecting arm 6 can be driven to move left and right, meanwhile, the sliding of the sliding block in the inner cavity of the limit groove 12 is utilized to perform displacement compensation, interference is avoided, a first self-locking cylinder 13 is arranged on the right side of the base 1, the output end of the first self-locking cylinder 13 is fixedly connected with the outer wall of the limit groove 12, the first self-locking cylinder 13 is opened to drive the movable seat 11 to move left and right and lock, two positioning rods 14 are symmetrically arranged in the inner cavity of the driving cavity 10, the outer wall of the movable seat 11 is slidably sleeved on the outer wall of the positioning rod 14, and the two positioning rods 14 are utilized to fix the movable seat 11 to keep stable, and deflection or skew in the moving process is avoided.

As a preferred scheme, further, the inner cavity of the blind groove 22 is equipped with a rotating mechanism capable of driving the second turntable 20 to intermittently rotate, and each time the second turntable 20 rotates by a fixed angle, the fastener at the current position can be removed, meanwhile, the fastener in the next sequential station groove 21 is aligned to the through hole 9, when a worker processes a workpiece at the current position, the fasteners to be processed are placed in the rest station grooves 21, the next fastener can be automatically fed after the processing of the fastener at the current position is completed, the worker can take out the completed workpiece, and the continuous processing work is facilitated.

The rotating mechanism comprises a first rotating disc 17 rotatably arranged in an inner cavity of a blind groove 22, the first rotating disc 17 is connected with a second rotating disc 20, the first rotating disc 17 and the second rotating disc 20 are concentrically arranged, a plurality of clamping grooves 18 are formed in the top end of the first rotating disc 17 along the circumferential direction, a plurality of second limiting blocks 19 are further arranged on the top end of the first rotating disc 17, the plurality of clamping grooves 18 and the plurality of second limiting blocks 19 are arranged in a staggered mode, a motor 15 is arranged on the top end of the base 1, the output end of the motor 15 extends into the inner cavity of the blind groove 22, a rotating assembly 16 is arranged at the output end of the motor 15 through a coupler, the outer wall of the rotating assembly 16 is respectively provided with a deflector rod 16a and a first limiting block 16b, the deflector rod 16a is slidably embedded in the inner cavity of the clamping grooves 18, the motor 15 can drive the rotating assembly 16 to rotate, the second rotating disc 20 can be driven to rotate by utilizing the cooperation of the deflector rod 16a and the clamping grooves 18, at the moment, the second rotating disc 20 can synchronously rotate when the deflector rod 16a leaves the inner cavity of the clamping grooves 18, the first rotating disc 17 stops rotating by utilizing the first limiting blocks 16a and the first limiting blocks 19 to simultaneously, and the first rotating disc 17 can be controlled to rotate intermittently by the first rotating disc 17.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "center location," "other end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation; meanwhile, unless explicitly specified and limited otherwise, the terms "snap-in," "socket," "weld," "mount," "set," "interference fit," "screw connection," "pin connection," and the like are to be construed broadly, and may be, for example, a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A self-centering fixture for fastener machining, comprising: the clamping device comprises a base (1), wherein a through hole (9) is formed in the top end of the base (1), a plurality of rotatable clamping devices are mounted on the top end of the base (1) at equal intervals along the circumferential direction, and the free ends of the clamping devices are arranged at equal intervals along the circumferential direction relative to the circle center of the through hole (9), wherein the clamping devices are a first clamping arm (2 a), a second clamping arm (2 b) and a third clamping arm (2 c);

The inner cavity of the base (1) is provided with a blind groove (22), the inner cavity of the blind groove (22) is rotatably provided with a second rotary table (20), a plurality of station grooves (21) are circumferentially and equidistantly arranged on the outer wall eye of the second rotary table (20), and the station grooves (21) correspond to the through holes (9).

2. The self-centering fixture for fastener machining of claim 1, wherein: the top of base (1) is rotatable installs first roating seat (3), second roating seat (4) and third roating seat (5) respectively, and first roating seat (3), second roating seat (4) and third roating seat (5) respectively with second centre gripping arm (2 b), first centre gripping arm (2 a) and third centre gripping arm (2 c) fixed connection, the one end of linking arm (6) is still installed to the outer wall of first roating seat (3), and the one end of first connecting rod (7) is installed through the round pin axle to the other end of linking arm (6), and the other end of first connecting rod (7) pass through the round pin axle with the outer wall of third roating seat (5) links to each other, the one end of second connecting rod (8) is installed through the round pin axle to the outer wall of first roating seat (3), and the other end of second connecting rod (8) pass through the round pin axle with second roating seat (4) links to each other.

3. The self-centering fixture for fastener machining of claim 2, wherein: the utility model discloses a drive chamber (10) has been seted up to the outer wall of base (1), but install of the inner chamber of drive chamber (10) side-to-side movement removes seat (11), limit groove (12) have been seted up to the outer wall of removing seat (11), slider is installed to the link bottom of first connecting rod (7) and linking arm (6), and slider slidable embedded in the inner chamber of limit groove (12), first auto-lock cylinder (13) are installed on the right side of base (1), and the output of first auto-lock cylinder (13) with the outer wall fixed connection of limit groove (12).

4. A self-centering fixture for fastener machining as claimed in claim 3, wherein: two positioning rods (14) are symmetrically arranged in the inner cavity of the driving cavity (10), and the outer wall of the movable seat (11) is slidably sleeved on the outer wall of the positioning rods (14).

5. A self-centering fixture for fastener machining as claimed in claim 3, wherein: the inner chamber rotatable first carousel (17) of installing of blind groove (22), first carousel (17) link to each other with second carousel (20), and first carousel (17) with second carousel (20) concentric setting, a plurality of draw-in groove (18) have been seted up along circumference on the top of first carousel (17), a plurality of second stopper (19) are still installed on the top of first carousel (17), and a plurality of draw-in groove (18) and a plurality of second stopper (19) are crisscross to be set up each other.

6. The self-centering fixture for fastener machining of claim 5, wherein: the novel electric device is characterized in that a motor (15) is arranged at the top end of the base (1), the output end of the motor (15) extends into the inner cavity of the blind groove (22), a rotating assembly (16) is arranged at the output end of the motor (15) through a coupler, a deflector rod (16 a) and a first limiting block (16 b) are arranged at the outer wall relative positions of the rotating assembly (16) respectively, and the deflector rod (16 a) is slidably embedded in the inner cavity of the clamping groove (18).

7. The self-centering fixture for fastener machining of claim 6, wherein: the bottom of base (1) is installed second auto-lock cylinder (23), and the output of second auto-lock cylinder (23) extends into the inner chamber of push pedal (24), push pedal (24) are installed to the output of second auto-lock cylinder (23), and push pedal (24) with the position of through-hole (9) is corresponding.