CN209364430U - A kind of molding fixture of auxiliary V-type distance rod - Google Patents

Abstract

The purpose of this utility model is to provide a kind of molding fixtures of auxiliary V-type distance rod, including straight end head limit plate, preceding jacking block, strut, mobile jib, thread lead screw, spiral duct, manual turntable, wherein, straight end head limit plate is mutually entrenched togather by guide rail and guide groove with preceding jacking block, preceding jacking block, which is bolted, to be coupled in the side end of strut, two struts and mobile jib are bolted and are coupled to form linkage part, the full-enclosed circular cavity of mobile jib side is connected with the round head of thread lead screw side, thread lead screw and spiral duct are coupled, the thread lead screw other side connects manual turntable.The utility model is by the movement of rotation turntable instead of many and diverse screw installing and dismounting, it is only necessary to can realize the clamping of clamping device and the movement unclamped to the rotation of turntable.

Description

A fixture for auxiliary V-shaped thrust rod forming

technical field

The utility model relates to the field of fixtures, in particular to a fixture for assisting the forming of a V-shaped thrust rod.

Background technique

The hot riveting of the V-shaped thrust rod is a difficult and key point in the production of the V-shaped thrust rod. Since the hot riveting is to heat the workpiece to extrude and deform it, and then cool it once to shape it after processing. If the riveting is unqualified, the workpiece is almost impossible. Rework, so the requirements for hot riveting fixtures are higher. At present, the hot riveting fixtures used by most V-shaped thrust rod manufacturers have many shortcomings. When producing different types of V-shaped thrust rods, it is necessary to replace the molds and fixtures on the fixture, and replace them with parts of corresponding angles and lengths. And manual screwing is required to clamp, position and loosen the workpiece. The tightening and loosening process requires a lot of manpower and time, which greatly affects the efficiency of production. At the same time, the existing V-shaped thrust rod hot riveting fixture uses manual screws to clamp and position the workpiece. This positioning accuracy is too poor, and it is easy to make the V-shaped thrust rod have a size deviation beyond the allowable range, resulting in V-shaped thrust. When the rod is installed, there is a problem that it cannot be installed, which seriously affects the overall quality of the workpiece and consumes a lot of auxiliary processing time.

Therefore, the existing technology will not only waste a lot of processing time, make the production efficiency low, but also reduce the yield of production.

Contents of the invention

In view of the above problems, the utility model provides a fixture for auxiliary V-shaped thrust rod forming, to overcome the existing V-shaped thrust rod hot riveting fixture to clamp and position the workpiece by manually screwing the screw. In the process, There is no need to replace parts on the fixture.

The specific technical scheme of the described fixture for auxiliary V-shaped thrust rod forming is as follows:

A fixture for assisting the forming of a V-shaped thrust rod, comprising: a clamping device for making two rods to be matched to form a V-shaped thrust rod oppositely arranged at a preset included angle.

The clamping device includes: a base; two clamping mechanisms, which are arranged opposite to each other on the left and right, and respectively include: a support plate arranged on the base, a first clamping member installed on the support plate, and a first clamping member arranged on the first The second clamping part on the clamping part; a clamping channel for clamping the end of the rod is formed between the first clamping part and the second clamping part, and the first clamping part and the second clamping part The second clamping part is connected to each other through a limiting structure, and the second clamping part can move relative to the first clamping part to adjust the size of the clamping channel. The first clamping part and the second clamping part The clamping part can move linearly relative to the support plate or rotate relative to the preset angle range to adjust the clamping position of the workpiece;

An adjustment mechanism, used to drive the second clamping part of the two clamping mechanisms to move relative to the first clamping part, so as to clamp when the ends of the two rods are correspondingly clamped into the clamping channels of the two clamping mechanisms or release the two rods;

The adjustment mechanism includes: a main rod; two support rods, which are respectively arranged on the left and right sides of the main rod and correspond to the second clamping parts of the two clamping mechanisms; the first ends of each support rod are hinged to the On the corresponding second clamping part, the second end of each support rod is hinged to the first end of the main rod; a driving assembly drives the main rod to move back and forth.

The first clamping piece is provided with a fixing hole and an arc-shaped groove with a preset radian, and the support plate is provided with a first guide groove and a second guide groove under the corresponding first clamping piece. The fixing hole is connected with the first guide groove through bolts and nuts, and the arc-shaped groove is connected with the second guide groove through bolts and nuts, so as to connect the first clamping piece with the support plate, and the The first clamping member can move linearly and rotate within a preset angle relative to the support plate.

The second clamping part includes a hinge part hinged to the pole on the corresponding side, and the second clamping part can relatively rotate or move around the hinge part on the pole on the corresponding side; The second clamping part further includes a clamping plate forming the clamping channel with the first clamping part, and the hinge part is disposed on one side of the clamping plate.

The drive assembly includes a threaded lead screw, a threaded conduit fixed on the base, and a turntable; wherein, the middle part of the threaded lead screw has an external thread, and the threaded conduit is threaded with the threaded lead screw through its internal thread One end of the threaded screw rod is connected to the main rod, and the other end of the threaded screw rod is connected to the turntable.

The main rod and the threaded lead screw are connected by a spherical pair.

The thread lead angle of the lead screw thread is smaller than the equivalent friction angle.

The main rod and the two supporting rods are connected through a composite hinge.

Further, the main rod has a convex main rod head, the two rods are respectively a first rod and a second rod, and the second end of the first rod has a first concave rod head part, the second end of the second pole has a second concave rod head; the first concave rod head wraps the convex main rod head, and the second concave rod head wraps the As for the first concave rod head, the three are provided with a through hole from top to bottom, and the three are hinged together through a connecting piece through the through hole.

The limiting structure is a slot opened in the first clamping member, and a protrusion fitted in the slot and arranged on the second clamping mechanism.

Beneficial effects of the utility model

Compared with the prior art, the utility model has the following advantages:

1. Simple structure and convenient operation. The utility model replaces complicated installation and disassembly of screws by rotating the turntable, and only needs to rotate the turntable to realize the clamping and loosening actions of the clamping device. The clamping device only takes a few seconds during the clamping process, without too many complicated operations, which is convenient for users; the utility model is equipped with a threaded screw, and through the self-locking ability of the threaded screw, there is no need to design a set of self-locking device to self-lock the clamping device; through the main rod to drive the two rods at the same time, the clamping angle of the left and right rods can be adjusted at the same time, and the workpieces on the left and right sides can be clamped at the same time, which reduces the process and is easy to use .

2. The workpiece is evenly stressed. The main rod and the support rod are connected by a composite hinge, and the thrust of the rod can be evenly distributed to the two rods, so that the clamped workpieces on the left and right sides are evenly stressed, and unnecessary processing errors are avoided.

3. Wide application range. The front jack block can be rotated relative to its corresponding connecting rod to adjust the angle. In addition to being able to adapt to the clamping of various types of V-shaped thrust rods, it can also be applied to the processing of various other workpieces that require simultaneous clamping on both sides.

Description of drawings

Fig. 1 is a structural perspective view of a clamp for auxiliary V-shaped thrust rod forming of the utility model;

Fig. 2 is a three-dimensional exploded view (part) of the clamps formed by the auxiliary V-shaped thrust rod of the utility model;

Fig. 3 is the schematic diagram of the hinged connection between the front jack block and the strut of the clamp formed by the auxiliary V-shaped thrust rod (planar structural view);

Fig. 4 is the schematic diagram (three-dimensional structural diagram) of the hinge connection of the front top block and the strut of the fixture of described auxiliary V-shaped thrust rod molding;

Fig. 5 is a perspective view of the connection between the main rod and the two poles of the clamp formed by the auxiliary V-shaped thrust rod;

Fig. 6 is a partial cross-sectional view of the connection between the main rod and the threaded screw of the fixture formed by the auxiliary V-shaped thrust rod;

Fig. 7 is a partial view of the connection between the front top block and the straight end limit plate of the fixture formed by the auxiliary V-shaped thrust rod;

Fig. 8 is a perspective view of the straight end limit plate of the fixture formed by the auxiliary V-shaped thrust rod;

Fig. 9 is a schematic structural view of the limiting plate and the front jacking block (separated state, a limiting groove is opened on the limiting plate, and there are corresponding protrusions on the front jacking block);

Fig. 10 is a schematic diagram of the first step of clamping the workpiece using the fixture formed by the auxiliary V-shaped thrust rod;

Fig. 11 is a schematic diagram of the second step of clamping the workpiece using the fixture formed by the auxiliary V-shaped thrust rod;

Fig. 12 is a schematic diagram of the third step of clamping the workpiece using the fixture formed by the auxiliary V-shaped thrust rod;

Fig. 13 is a general assembly diagram of a clamp for auxiliary V-shaped thrust rod forming of the utility model;

Fig. 14 is a general assembly view (top view angle) of a clamp for auxiliary V-shaped thrust rod forming of the utility model at another viewing angle.

Among them, the names of the parts indicated by the numbers in the drawings are as follows:

1-straight end limit plate; 2-front top block; 3-support rod; 4-main rod; 5-threaded screw; 6-threaded conduit; 7-manual turntable; 8-support plate; 9-fixing hole ; 10-arc groove; 11-first guide groove; 12-second guide groove; 13-card slot; 14-protrusion; 15-base.

specific embodiment

With reference to Figures 1 to 14, the utility model is further explained through the following specific examples. New types of restrictions.

The purpose of this utility model is to provide a convenient auxiliary V-shaped thrust rod forming, which is used to make two rods to be matched to form a V-shaped thrust rod to be arranged relative to each other according to a preset angle, so as to overcome the need in the prior art to pass Tightening the screws by hand to adjust the complicated operation of the fixture can also relatively improve the accuracy of the operation. A specific embodiment of the present utility model is as follows:

As shown in FIG. 1 , the specific composition of the clamping device mainly includes two clamping mechanisms and an adjustment mechanism installed on the base.

The two clamping mechanisms respectively include: a support plate arranged on the base, a first clamping piece installed on the support plate, a second clamping piece arranged on the first clamping piece; A clamping channel for clamping the end of the rod is formed between the first clamping piece and the second clamping piece, the first clamping piece and the second clamping piece are connected to each other through a limiting structure and The second clamping part can move relative to the first clamping part to adjust the size of the clamping channel, and the first clamping part and the second clamping part can move linearly relative to the support plate Or relative rotation within the preset angle range to adjust the clamping position of the workpiece.

The adjustment mechanism includes a main rod, two support rods and a driving assembly. Wherein, the two struts are respectively arranged on the left and right sides of the main rod and correspond to the second limiters of the two clamping mechanisms; the first end of each strut is hinged to the corresponding first end. On the two limiters, the second end of each support rod is hinged to the first end of the main rod; a driving assembly drives the main rod to move back and forth.

In this embodiment, the first clamping piece is a straight end limit plate, the second clamping piece is a front top block, and the front top block includes a straight end limit plate formed with the straight end limit plate The clamping plate of the above-mentioned clamping channel is used for clamping the workpiece together. The drive assembly includes a threaded lead screw, a threaded conduit fixed on the base, and a turntable; wherein, the middle part of the threaded lead screw has an external thread, and the threaded conduit is threaded with the threaded lead screw through its internal thread One end of the threaded screw rod is connected to the main rod, and the other end of the threaded screw rod is connected to the turntable.

Further, as shown in Figure 1, the front top block 2 is mounted on one side end of the strut 3 through bolt connection, and the two struts and the main rod 4 are fitted through bolt connection to form a linkage part, and one side of the main rod 4 The all-inclusive circular cavity of the threaded screw 5 is connected to the circular rod head on one side (that is, connected by a ball joint), and the threaded screw 5 and the threaded conduit 6 pass through the external thread of the threaded screw 5 and the threaded conduit 6 The internal threads of the inner thread are installed so that the threaded conduit 6 is sleeved on the threaded screw 5, and the other side of the threaded screw 5 is connected to the manual turntable 7.

The straight end limit plate is provided with a fixing hole and an arc-shaped groove with a preset radian, and the support plate is provided with a first guide groove and a second guide groove under the corresponding straight end limit plate, The fixing hole is connected with the first guide groove through bolts and nuts, and the arc-shaped groove is connected with the second guide groove through bolts and nuts, so as to connect the straight end limiting plate with the support plate , and the straight end limiting plate can move linearly and rotate within a preset angle relative to the supporting plate.

Further, in order to meet the processing and production requirements for processing V-shaped thrust rods with different angles, in the given embodiment, the front jack block and the strut are connected in a hinged manner, as shown in Fig. 4 and Fig. 5 . The front jacking block includes a hinged part hinged to the pole on the corresponding side, and the hinged part is arranged on one side of the clamping plate, so that the front jacking part can be relatively rotated or rotated around the left end of the pole. It can ensure that when processing V-shaped thrust rods with different angles, the angles of the two rods change during the clamping process to automatically adapt to the angle requirements, and the front jack block can always be effectively positioned and clamped against the workpiece. Tight or loose. In addition, in order to prevent the front top block from exceeding the range of the limit plate when moving, a limit structure is also arranged between the front top block and the limit plate.

In this embodiment, as shown in Figure 10, the limiting structure is a slot opened on the straight end limiting plate (in this embodiment, the slot is a dovetail slot), and the embedded The protrusion on the front top block fits in the card slot, and the shape and size of the protrusion match the card slot. However, there are many forms of the limiting structure, which are not limited to the structure adopted in this embodiment. For example, the limiting structure can also be a chute opened on the straight end limiting plate, and the front top block has a Protruding guide rod, the shape and size of the guide rod match the chute, and the guide rod can slide in the chute, and the guide rod head passes through the chute and extends to the The outside of the limiting plate is connected with the limiting plate through bolts and nuts.

Furthermore, in order to convert the lateral thrust on the main rod into two component forces on the two linked struts, the main rod and the two struts are connected by a composite hinge, as shown in Figure 5. The main pole has a convex main pole head, the two poles are respectively a first pole and a second pole, and the second end of the first pole has a first concave pole head, so The second end of the second pole has a second concave rod head; the first concave rod head wraps the convex main rod head, and the second concave rod head wraps the first Concave shaft head. There is a through hole in the middle of the three rod heads, and the three are connected together by a bolt, and the bolt is used as the rotation axis, so that the movement and thrust of the main rod can be decomposed into two supports. Combined movement on the rod to meet the workpiece clamping requirements.

Further, the main rod and the threaded screw are connected by a spherical pair (ball joint connection), the end of the main rod is a circular cavity, and the end of the threaded screw is a circular rod head, as shown in FIG. 6 . Through this connection structure, the helical motion of the threaded lead screw is converted into the linear motion of the main rod.

In addition, the threaded lead screw is matched with the threaded conduit through a screw pair, and the other side of the threaded lead screw is connected with the manual turntable. Rotating the turntable can realize the helical movement of the lead screw. By designing the thread lead angle of the lead screw thread to be smaller than the equivalent friction angle, after the current jack block clamps the workpiece, the lead screw thread will self-lock in the opposite direction, which can realize the self-locking of the clamping device.

The clamping principle is: use the manual turntable to drive the threaded screw to rotate in the threaded conduit, and the rotation will form a forward thrust. Since the threaded conduit is fixed on the base, when the turntable is turned, the threaded screw will be opposite to the threaded conduit. Moving forward, the thrust is transmitted to the all-inclusive circular cavity on the side of the main rod through the circular rod head on one side of the threaded screw, and then the main rod is pushed forward to make the linkage between the main rod and the support rod The part starts to rotate and pushes the two poles to move towards the workpiece clamping direction. At this time, the front jack block gradually clamps the workpiece to be processed under the push of the pole until the last two front jack blocks completely clamp the workpiece to be processed. At this time, stop rotating the turntable, and at the same time, the screw thread is reversely self-locking to realize clamping self-locking, and complete the entire clamping operation.

Referring to Figure 10-12, the clamping process is as follows:

In Fig. 10, the left rectangular frame represents the two shafts of the clamped V-shaped thrust rod workpiece and the two straight ends connected to the shafts.

Step 1: Adjust the angle position of the support plate according to the angle requirements of the V-shaped thrust rod workpiece. Place the left and right workpieces on the support plate, and align the clamped surface of the workpiece with the front top block.

Step 2: Turn the turntable to move in the direction shown in Figure 11, so that the threaded screw rotates clockwise, and the main rod is driven to the left by the threaded screw.

Step 3: As shown in Figure 12, the main pole moves forward to drive the upper and lower poles to move. The two poles perform compound motions of translation to the left and rotation. At this time, the angles of the two poles become larger, and the front top block is driven to advance along the slot through the hinge, so as to realize the clamping of the workpiece.

Step 4: When the workpiece is clamped, stop rotating the turntable, and the thread of the screw will self-lock in reverse to complete the clamping of the workpiece.

The utility model replaces complicated installation and disassembly of screws by rotating the turntable, and only needs to rotate the turntable to realize the clamping and loosening actions of the clamping device. The clamping device only takes a few seconds during the clamping process, without too many complicated operations, which is convenient for users; the utility model is equipped with a threaded screw, and through the self-locking ability of the threaded screw, there is no need to design a set of self-locking device to self-lock the clamping device; through the main rod to drive the two rods at the same time, the clamping angle of the left and right rods can be adjusted at the same time, and the workpieces on the left and right sides can be clamped at the same time, which reduces the process and is easy to use .

The main rod and the support rod are connected by a composite hinge, and the thrust of the rod can be evenly distributed to the two rods, so that the clamped workpieces on the left and right sides are evenly stressed, and unnecessary processing errors are avoided.

The front jacking block can be rotated relative to the corresponding connected pole to adjust the angle. In addition to being able to adapt to the clamping of various types of V-shaped thrust rods, it can also be applied to the processing of various other workpieces that require simultaneous clamping on both sides.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (9)

1. A fixture for auxiliary V-shaped thrust rod forming, comprising: a clamping device, used to make two rods to be matched to form a V-shaped thrust rod relatively arranged at a preset angle; it is characterized in that, The holding device includes: a base (15); The two clamping mechanisms are arranged opposite to each other on the left and right, and respectively include: a support plate (8) arranged on the base, a first clamping piece (1) installed on the support plate, and a first clamping piece (1) arranged on the first clamping piece ( 1) on the second clamping piece (2); a clamping channel for clamping the end of the rod is formed between the first clamping piece (1) and the second clamping piece (2), so The first clamping part (1) and the second clamping part (2) are connected to each other through a limiting structure, and the second clamping part (2) can move relative to the first clamping part (1) To adjust the size of the clamping channel, the first clamping part (1) and the second clamping part (2) can move linearly or within a preset angle range relative to the support plate (8) Relative rotation to adjust the clamping position of the workpiece; An adjustment mechanism, used to drive the second clamping part (2) of the two clamping mechanisms to move relative to the first clamping part (1), so that the ends of the two rods are respectively clamped into the two clamping mechanisms. Clamping or releasing both said rods while clamping the channel; The adjustment mechanism includes: A main rod (4); The two poles (3) are respectively arranged on the left and right sides of the main pole (4) and correspond to the second clamping parts (2) of the two clamping mechanisms; the first ends of each pole are hinged on the corresponding On the second clamping part (2), the second end of each strut is hinged on the first end of the main rod (4); A driving assembly drives the main rod to move back and forth. 2. The clamp for auxiliary V-shaped thrust rod forming according to claim 1, characterized in that: the first clamping member (1) is provided with a fixing hole (9) and an arc-shaped groove (10) with a preset radian ), the support plate (8) is provided with a first guide groove (11) and a second guide groove (12) under the corresponding first clamping piece (1), and the fixing hole (9) passes through the bolt and nut It is connected with the first guide groove (11), and the arc groove (10) is connected with the second guide groove (12) through bolts and nuts, so as to connect the first clamping piece (1) with the The support plate (8) is connected, and the first clamping member (1) can move linearly and rotate within a preset angle relative to the support plate (8). 3. The clamp for auxiliary V-shaped thrust rod forming according to claim 1, characterized in that: the second clamping member (2) includes a hinged part hinged to the support rod (3) on the corresponding side, so The second clamping part (2) can be relatively rotated or moved around the support rod (3) on the opposite side of the hinge part; the second clamping part (2) also includes a The clamping piece (1) forms a clamping plate of the clamping channel, and the hinge part is arranged on one side of the clamping plate. 4. The clamp for auxiliary V-shaped thrust rod forming according to claim 1, characterized in that: the drive assembly includes a threaded screw (5), a threaded conduit (6) fixed on the base (15), and A rotating disk (7); wherein, the middle part of the threaded screw (5) has an external thread, and the threaded conduit (6) is threadedly connected with the threaded screw (5) through its internal thread, and the threaded screw ( 5) is connected to the main rod (4) at one end, and the other end of the threaded screw (5) is connected to the turntable (7). 5. The clamp for auxiliary V-shaped thrust rod forming according to claim 4, characterized in that: the main rod (4) and the threaded screw (5) are connected by a spherical pair. 6. The fixture for auxiliary V-shaped thrust rod forming according to claim 4, characterized in that: the lead angle of the screw thread (5) is smaller than the equivalent friction angle. 7. The clamp for auxiliary V-shaped thrust rod forming according to claim 1, characterized in that: the main rod (4) and the two support rods (3) are connected by a composite hinge. 8. The clamp for auxiliary V-shaped thrust rod forming according to claim 7, characterized in that: the main rod (4) has a convex main rod head, and the two struts (3) are respectively the first struts and a second strut, the second end of the first strut has a first concave rod head, the second end of the second strut has a second concave rod head; the first concave rod head Wrap the convex main rod head, the second concave rod head wraps the first concave rod head, the three are provided with a through hole from top to bottom, through the through hole through a connecting piece The three are hinged together. 9. The clamp for auxiliary V-shaped thrust rod forming according to claim 1, characterized in that: the limiting structure is a slot (13) opened in the first clamping piece (1), and fitted into The protrusion (14) arranged on the second clamping piece (2) in the card slot (13).