SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
In view of this, an object of the utility model is to provide a tungsten alloy rod forges and connects material and use frock.
In order to realize the above purpose, the technical scheme of the utility model a tungsten alloy rod forges connects material to use frock is provided, include: the fixture body is in a hollow cylinder shape, the inner wall of the left end of the fixture body is provided with a conical inner conical wall, and the inner diameter size of the inner conical wall is sequentially reduced from left to right; the clamping head is at least partially accommodated in the clamp body, the peripheral surface of the clamping head is provided with an outer conical wall and a clamping hole for clamping the bar, the outer diameter size of the outer conical wall is sequentially reduced from left to right, the clamping head is also provided with at least two gaps which are arranged at intervals along the circumferential direction of the outer conical wall, and the gaps extend from the left end surface of the clamping head to the right along the axial direction; when a force is applied to the chuck rightward, the width of the gap is reduced, and the inner diameter of the clamping hole is reduced to clamp the bar; when a leftward force is applied to the chuck, the width of the gap is increased, and the inner diameter of the clamping hole is increased to loosen the bar.
Further, still include: the fixed supporting plate is fixedly connected with a base of the precision forging machine and is fixedly connected with the right end of the fixture body; the cylinder body of the cylinder is connected with the fixed supporting plate; one end of the connecting rod assembly is connected with a piston rod of the air cylinder, and the other end of the connecting rod assembly extends into an inner cavity of the clamp body to be connected with the clamp head; the cylinder drives the connecting rod assembly to pull the chuck to reciprocate leftwards in the inner cavity of the chuck body.
Further, the chuck includes: the clamping device comprises a tubular connecting part and a clamping jaw part connected with the left end of the connecting part, wherein the cross section of the clamping jaw part is in a sector ring shape, the number of gaps on a clamping head is more than or equal to three, and each gap extends from the left end of the clamping jaw part to the middle position of the connecting part; wherein, the right end of connecting portion links to each other with link assembly, and the inner chamber of clamping jaw portion is the centre gripping hole.
Furthermore, the clamp body comprises a sleeve and a clamping body, and the inner conical wall is arranged on the clamping body; the link assembly includes: the push-pull plate is fixedly connected with a piston rod of the cylinder; one end of the connecting rod is fixedly connected with the push-pull plate, and the other end of the connecting rod extends into the sleeve and is sleeved outside the connecting part and fixedly connected with the connecting part; wherein, the connecting rod is hollow tubular, and the internal diameter of connecting rod is greater than the internal diameter of centre gripping hole.
Furthermore, a second through hole and two third through holes symmetrically arranged around the circle center of the second through hole are formed in the fixed supporting plate, the connecting rods penetrate through the second through holes and extend into the sleeve, the number of the cylinders is two, and piston rods of the two cylinders respectively penetrate through one third through hole and are connected with the push-pull plate.
Further, still include: and the branch pipes are arranged in the gap between the connecting rod and the sleeve.
Further, the outer wall of the connecting part and the inner wall of the connecting rod are provided with mutually matched threads.
Furthermore, the taper angle of the inner conical wall and the taper angle of the outer conical wall range from 10 degrees to 30 degrees.
Further, still include: the infrared sensor is used for acquiring the position information of the bar;
the air pump is communicated with the air cylinder through an air pipe; the controller is electrically connected with the infrared sensor and the air pump; the controller controls the operation of the air pump according to the position information of the bar, which is transmitted by the infrared sensor.
Further, still include: the plurality of bearings are sleeved outside the sleeve, and the outer rings of the bearings abut against the inner wall of the discharge hole.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the air can be utilized to provide power, the forged bar is properly prevented from freely rotating along with the forging die, and the quality of the produced bar finished product is improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention and its advantages will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, an embodiment of the present invention provides a tooling for forging and receiving tungsten alloy bars.
The frock that this embodiment provided is used for the precision forging machine, and the precision forging machine has base and discharge opening, and the frock includes: the fixture body 1, chuck 2, specifically, the fixture body 1 includes sleeve 11 and clamping body 12, sleeve 11 are hollow tube-shape, and clamping body 12 holding is in the left end of sleeve 11, and the outer peripheral face of clamping body 12 contacts and connects with the inside of sleeve 11, specifically, clamping body 12 and sleeve 11 accessible welded connection, and clamping body 12 and sleeve 11 also can be fixed through bonding, or clamping body 12 and sleeve 11 structure as an organic whole. The inner wall of the left end of the clamping body 12 is provided with a conical inner conical wall 121, and the inner diameter size of the inner conical wall 121 is reduced from left to right; at least part of the chuck 2 is accommodated in the clamping body 12, the outer circumferential surface of the chuck 2 is provided with an outer conical wall 211 and a clamping hole 212 for clamping a bar, the outer diameter of the outer conical wall 211 is sequentially reduced from left to right, the chuck 2 is further provided with at least two gaps 201 uniformly arranged along the circumferential direction of the outer conical wall 211, the gaps 201 penetrate through the inner wall and the outer circumferential surface of the chuck 2, and the gaps 201 extend from the left end surface of the chuck 2 to right along the axial direction; when a force is applied to the chuck 2 in a rightward direction, the outer tapered wall 211 of the chuck 2 abuts against the inner tapered wall 121 of the clamping body 12, so that the chuck 2 is elastically deformed, the width of the gap 201 is reduced, and the inner diameter of the clamping hole 212 is further reduced to clamp the bar; when a leftward force is applied to the collet 2, the outer tapered wall 211 of the collet 2 is separated from the inner tapered wall 121 of the clamping body 12, the collet 2, which is elastically deformed, is restored to its original shape, the width of the gap 201 is increased, and the inner diameter of the clamping hole 212 is increased, thereby loosening the rod. The clamp body 1 and the clamp head 2 provided in the embodiment are simple and convenient to match, and can be used for rapidly clamping the bar or loosening the bar.
Wherein, the left and right directions are the directions indicated by the arrows in fig. 1.
Further, the frock still includes: fixed support plate 3, cylinder 4, link assembly 5, fixed support plate 3 and the base fixed connection of finish forging machine, fixed support plate 3 and the right-hand member fixed connection of sleeve 11 for fixed support plate 3 and base are static relatively and provide the holding power for sleeve 11, make when chuck 2 and clamping body 12 relative movement, provide the holding power for clamping body 12 through sleeve 11, avoid clamping body 12 to remove along with chuck 2. The cylinder body 41 of cylinder 4 links to each other with fixed support plate 3, and the one end of link assembly 5 links to each other with the piston rod 42 of cylinder 4, and the other end stretches into the inner chamber of sleeve 11 and links to each other with chuck 2 to make cylinder 4 drive link assembly 5 pulling chuck 2 reciprocating motion in the inner chamber of clamping body 12, through the cooperation of link assembly 5, clamping body 12 and chuck 2, turn into the pressure that chuck 2 presss from both sides tight rod with the power of the piston rod 42 output of cylinder 4.
Specifically, the cylinder 4 is specifically a thin-walled cylinder.
It should be noted that the pressure applied to the bar by the chuck 2 can be accurately controlled by controlling the power output by the piston rod 42 of the cylinder 4, so that the tool can accurately control the clamping of the bar, and the chuck 2 can apply appropriate pressure to the bar, so that appropriate resistance is provided between the bar and the chuck 2, and on one hand, the bar is prevented from freely rotating along with the die in the process of being forged and discharged, the forging frequency is increased, the tensile property of the bar is improved, and the surface quality of a product is improved; on the other hand, avoid because chuck 2 applys the pressure for the rod too big, lock the rod completely, at the in-process of forging, the rod is because can not remove directly to transmit the impact force of forging in-process to frock and precision forging machine completely, causes the deformation or the damage of frock structure.
Before forging, the bar is coated with the graphite emulsion, so that on one hand, after the chuck 2 clamps the bar, the bar can move along the axial direction when being subjected to a large impact force, and the impact force is buffered; on the other hand, the bar is coated with the graphite emulsion to reduce the rigid friction between the bar and the chuck 2, so that the problem of serious surface scratch of the bar is avoided.
Further, as shown in fig. 6, the cartridge 2 includes: the connecting portion 22 and the clamping jaw portion 21, specifically, the inner cavity of the clamping jaw portion 21 is the clamping hole 212, the connecting portion 22 and the clamping jaw portion 21 are integrally formed, the connecting portion 22 is tubular, the cross section of the clamping jaw portion 21 is fan-shaped, three slits 201 are arranged on the chuck 2, each slit 201 extends from the left end of the clamping jaw portion 21 to the middle position of the connecting portion 22, the clamping jaw portion 21 is used for clamping a bar, the connecting portion 22 is used for being connected with the connecting rod assembly 5 on one hand, on the other hand, the slits 201 extend from the left end of the clamping jaw portion 21 to the middle position of the connecting portion 22, the wall thickness of the cross section of the tubular connecting portion 22 is thinner than that of the cross section of the clamping jaw portion 21, the tubular connecting portion 22 is more easily deformed under the same radial pressure, the radial pressure applied to the chuck 2 is derived from the output force of the piston rod 42 of the cylinder 4, therefore, by arranging the connecting portion 22, when the output force of the piston rod 42 of the cylinder 4 is constant, the slits 201 in the collet 2 are more easily deformed, and the larger the deformation of the slits 201 in the collet 2 (i.e., the degree of reduction of the slits 201), the smaller the inner diameter of the clamping hole 212, the greater the radial pressure to which the rod is subjected, thereby increasing the conversion ratio between the output force of the piston rod 42 and the radial pressure to which the collet 2 is subjected.
The clamping jaw part 21 is divided into three clamping jaws, when the three gaps 201 are completely closed, the clamping holes 212 are in a perfect circle shape, in the actual use process, in order to enable the clamping jaw part 21 to provide proper pressure for the bar materials, the gaps 201 cannot be completely closed, therefore, the clamping holes 212 cannot form a perfect circle shape, the clamping jaws and the bar materials with the cross sections in the perfect circle shape are in line contact when being abutted against each other, and compared with a two-flap material receiving clamp, the three-jaw material receiving clamp has the advantage that the contact surface with the bar materials is larger and more stable.
In a specific embodiment, as shown in fig. 7, a circular chamfer 213 is formed at the left end of the clamping hole 212 to ensure that the bar can smoothly enter the clamping hole 212 by the guiding action of the circular chamfer 213 when the bar is slightly deviated from the axis of the clamping hole 212.
Further, as shown in fig. 1 and 5, the link assembly 5 includes: the push-pull plate 51 and the connecting rod 52 are fixedly connected, the push-pull plate 51 is fixedly connected with the piston rod 42 of the air cylinder 4, the push-pull plate 51 moves left and right under the pulling of the piston rod 42, a first through hole 511 is formed in the push-pull plate 51, one end of the connecting rod 52 penetrates through the first through hole 511 to be fixedly connected with the push-pull plate 51, the other end of the connecting rod 52 extends into the sleeve 11, is sleeved outside the connecting part 22 and is fixedly connected with the connecting part 22, the piston rod 42 of the air cylinder 4 pulls the connecting rod 52 to move left and right in the sleeve 11 through the push-pull plate 51, the connecting part 22 is driven to move left and right, the connecting rod 52 is in a hollow tubular shape, and the inner diameter of the connecting rod 52 is larger than that of the clamping hole 212, so that after the bar is forged, the bar can pass through the inner cavity of the connecting rod 52, and discharging is completed.
Further, as shown in fig. 5, the fixed support plate 3 is provided with a second through hole 31 and two third through holes 32 symmetrically arranged around the center of the second through hole 31, the connecting rod 52 passes through the second through hole 31 and extends into the sleeve 11, the number of the cylinders 4 is two, and the piston rods 42 of the two cylinders 4 respectively pass through one of the third through holes 32 and are connected with the push-pull plate 51. Through the symmetrical arrangement of the two cylinders 4, the tension on the connecting rod 52 can be more balanced, and the stability of the operation of the tool is improved.
Further, as shown in fig. 4 and 5, the tool further includes: a plurality of branch pipes 6, the branch pipes 6 being disposed in the gap between the connecting rod 52 and the sleeve 11. Specifically, the branch pipes 6 are tubular, the number of the branch pipes 6 is three, the branch pipes 6 are accommodated in the sleeves 11 and are respectively sleeved on the connecting rods 52, the branch pipes 6 can provide supporting force for the connecting rods 52, and the connecting rods 52 are prevented from being bent and deformed under the action of gravity when the rods of the connecting rods 52 penetrate through the connecting rods 52 due to the overlong length of the connecting rods 52.
Wherein, the branch pipe 6 is made of nylon material.
Further, the outer wall of the connecting portion 22 and the inner wall of the connecting rod 52 are provided with mutually cooperating threads. To facilitate quick installation or removal of the connection 22 from the link 52.
Furthermore, the taper angles of the inner conical wall 121 and the outer conical wall 211 range from 10 degrees to 30 degrees.
Further, the frock still includes: the device comprises an infrared sensor, an air pump and a controller, wherein the infrared sensor is arranged on a sleeve 11 at the position of 10-30mm on the right side of a chuck 2 and used for acquiring the position information of a bar; the air pump is communicated with the air cylinder 4 through an air pipe; the controller is electrically connected with the infrared sensor and the air pump; after the bar enters the clamping hole 212 of the chuck 2, the infrared sensor detects the bar, the controller controls the air pump to drive the air cylinder 4 to operate, the air cylinder 4 is under the assistance of air, the piston rod 42 moves rightwards, the piston rod 42 of the air cylinder 4 applies a rightward pulling force to the chuck 2 through the push-pull plate 51 and the connecting rod 52, so that the chuck part 21 clamps the bar until the bar is pushed out after being forged, the bar leaves the infrared sensor, the infrared sensor sends a signal to the controller again, the air pump is controlled to stop inflating the air cylinder 4, the air cylinder 4 automatically unloads the force after the air is not inflated, the chuck 2 is only subjected to leftward supporting force by the acting force between the inner conical wall 121 and the outer conical wall 211, the elastic potential energy stored in the chuck 2 is converted into mechanical energy, the chuck 2 is pushed to move leftwards, and the original size is recovered.
Further, as shown in fig. 3, the tool further includes: the bearing 7 is sleeved outside the sleeve 11, and the outer ring of the bearing 7 is abutted to the inner wall of the discharge hole. The purpose of setting up bearing 7 is for sleeve 11 provides the holding power, avoids because sleeve 11 overlength, in the ejection of compact process, receives the gravity influence of rod, makes sleeve 11 bending deformation downwards, and rotating-structure such as the belt pulley of precision forging machine inside takes place to interfere, causes the damage of precision forging machine.
The utility model has the advantages as follows: the air can be utilized to provide power, the forged bar is properly prevented from freely rotating along with the forging die, and the quality of the produced bar finished product is improved.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.