CN217475444U - A multi-point adaptive compression mechanism - Google Patents

Abstract

The utility model discloses a multipoint self-adaptive pressing mechanism, which comprises a main support block, a cylindrical pin, a first pressing block and a second pressing block, wherein the main support block is vertically provided with a mounting groove, and the cylindrical pin horizontally passes through the mounting groove and is in pin joint with a piston rod head of a tensioning cylinder below the mounting groove; the main support block is connected with a first pressing block and a second pressing block through pin shafts on two sides of the cylindrical pin respectively; the first pressing block and the second pressing block are both in a T-shaped block shape, and two probe arm ends of the T-shaped block can be pressed on the upper surface of a workpiece. The utility model discloses multiple spot self-adaptation hold-down mechanism can be taut by a department, and multiple spot self-adaptation compresses tightly dress card matte, stable in structure, and the dress card is fixed effectual.

Description

A multi-point adaptive compression mechanism

technical field

The utility model relates to the technical field of mechanical processing auxiliary fixture facilities, in particular to a multi-point self-adaptive pressing mechanism.

Background technique

During the machining process, the workpiece will be subjected to external forces such as cutting force, centrifugal force, inertial force, etc. In order to ensure that under the action of these external forces, the workpiece can still maintain the processing position determined by the positioning element in the fixture without vibration or displacement. To reliably ensure the processing quality of the workpiece, improve the processing efficiency, reduce the labor intensity, and give full play to and expand the technological performance of the machine tool, the positioning of the fixture, the selection of the pressing position and the pressing force are particularly important.

In the existing fixture design, the commonly used air cylinders and other components are selected to realize multi-point clamping, which will lead to the clamping sequence of different air cylinders, which will cause the parts to not be well clamped on multiple support points, which will make the product inclined, which will lead to product processing. The unstable size or the inconsistency of the machining force caused by the different clamping force of different cylinders may cause vibration of the tool and the possibility of the parts being displaced under the force of the tool. At the same time, the clamping cylinder needs to be set in multiple places, which takes up a lot of space and clamps. The process is time-consuming and labor-intensive. Especially in the processing of castings, most of the mounting points are rough surfaces, which is more obvious.

Therefore, it is necessary to develop a multi-point adaptive pressing mechanism for the above-mentioned defects.

Utility model content

The purpose of the utility model is to provide a multi-point self-adaptive pressing mechanism, which can be tightened at one point, multi-point self-adaptive pressing of the carding rough surface, stable in structure, and good in carding and fixing effect.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

The utility model relates to a multi-point self-adaptive pressing mechanism, which comprises a main support block, a cylindrical pin, a first pressing block and a second pressing block. An installation groove is vertically provided on the main support block, and the cylindrical pin is horizontally arranged. Pass through the installation groove and pin the piston rod head of the tensioning cylinder below; the main support block is connected to the first pressing block and the second pressing block by pin shafts on both sides of the cylindrical pin; Both the first pressing block and the second pressing block are in the shape of a T-shaped block, and two probe arm ends of the T-shaped block can be pressed against the upper surface of the workpiece.

Further, the piston rod head is provided with a ball joint, and the ball pin of the ball joint is connected to the cylindrical pin.

Further, the first pressing block is mounted on the side wall of the main support block through stepped pins and pin screws, and the bottom of the first pressing block is horizontally provided with stepped holes with large outer and inner small, so The stepped pin shaft passes through the stepped hole and is connected to the side wall of the main support block through a pin shaft screw; the installation structure of the second pressing block is the same as that of the first pressing block.

Further, the inner side of the bottom of the first pressing block is provided with a first limit clip, and the first limit clip can limit the excessive rotation of the first pressing block along the stepped pin shaft; corresponding , a second limit clip edge is arranged on the inner side of the bottom of the second pressing block.

Further, pressure blocks are connected under the two probe arms at the top of the first pressure block through bolts, and the pressure blocks can be pressed against the upper surface of the workpiece.

Further, the two probe arms at the top of the second pressing block are respectively provided with threaded holes in the vertical direction, and the threaded holes are threadedly connected with pressing screws, and the bottom ends of the pressing screws can be pressed against each other. the upper surface of the workpiece.

Further, the bottom end of the pressing screw is set as a round head.

Further, a lock nut is threadedly connected to the top of the compression screw, and the lock nut is locked to the top surface of the second compression block; the compression screw is specifically a hexagon socket flat end set screw.

Further, the mounting groove of the main support block specifically adopts a waist-shaped hole, and the longitudinal direction of the waist-shaped hole is perpendicular to the large faces of the first pressing block and the second pressing block.

Further, it also includes a locking screw, the main support block is provided with a threaded hole on the top surface of the long side wall of the waist-shaped hole and is threadedly connected to the locking screw, and the inner end of the locking screw is pressed against on the outer wall of the cylindrical pin.

Compared with the prior art, the beneficial technical effects of the present utility model:

The utility model is a multi-point self-adaptive pressing mechanism, which is provided by two pressing blocks in the shape of T-shaped blocks, and the T-shaped blocks swing along the pin shaft, thereby enabling four-point pressing on the upper surface of the workpiece; At the same time, the main support block and the cylindrical pin are arranged in the middle position, which ensures that when the tensioning cylinder is tensioned, the four points around the top provide a balance of opposite forces, thereby ensuring the smooth pressing of the workpiece. The multi-point self-adaptive pressing mechanism of the utility model can be tightened at one point, and the multi-point self-adaptive pressing and clamping rough surface has stable structure and good clamping and fixing effect.

In addition, through the arrangement of the ball joint, the cylindrical pin swings relative to the piston rod of the tensioning cylinder, so that the four compression points around the top of the mechanism can be swung in multiple directions and then compressed adaptively, which can be applied to Compression of the rough surface of the billet. By opening a stepped hole with a large outer size and a small inner size at the bottom of the first pressing block and assembling the stepped pin shaft, the first pressing block can be prevented from rotating around the stepped pin shaft while avoiding outward separation. Through the arrangement of the first limit clip, the excessive rotation of the first pressing block along the stepped pin shaft can be restricted, thereby ensuring the stability of the structure. By arranging a pressing block under the probe arm on the top of the first pressing block, the clamping point directly contacting the workpiece is a replaceable structure, which can be replaced after wear, thereby improving the service life of the equipment. By setting the compression screws on the two probe arms at the top of the second compression block, the height of the compression point can be flexibly adjusted, and the bottom end of the compression screw is set as a round head, which can reduce the compression contact area and avoid the occurrence of burrs. Occurrence of surface compression. Through the setting of the lock nut, the compression screw can be locked to avoid loosening. Through the setting of the waist-shaped hole, it is convenient to install the ball joint with larger radial size; through the setting of the locking screw, the cylindrical pin can be locked axially, so as to avoid the cylindrical pin falling off during use, and the structure is compact and easy to operate.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings.

1 is a schematic diagram of the three-dimensional structure of the multi-point self-adaptive pressing mechanism of the present invention;

Fig. 2 is the front view structure schematic diagram of the multi-point self-adaptive pressing mechanism of the present invention;

Fig. 3 is the left side structural schematic diagram of the multi-point self-adaptive pressing mechanism of the present invention;

FIG. 4 is a schematic top view structure diagram of the multi-point self-adaptive pressing mechanism of the present invention.

Description of reference numerals: 1. Main support block; 101. Waist hole; 2. Cylindrical pin; 3. First pressing block; 301. Tightening block; 401, second limit card edge; 5, pressing block; 6, pressing screw; 601, round head; 7, lock nut; 8, stepped pin; 9, pin screw; 10, locking screw .

Detailed ways

The core of the utility model is to provide a multi-point self-adaptive pressing mechanism, which can be tightened at one point, and the multi-point self-adaptive pressing and clamping rough surface has stable structure and good clamping and fixing effect.

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Referring to the accompanying drawings, FIG. 1 is a schematic diagram of the three-dimensional structure of the multi-point self-adaptive pressing mechanism of the present invention; FIG. 2 is a schematic diagram of the front view of the multi-point self-adaptive pressing mechanism of the present invention; FIG. 3 is the multi-point self-adaptive pressing mechanism of the present invention. Schematic diagram of the left-view structure of the tightening mechanism; FIG. 4 is a schematic top-view structural diagram of the multi-point self-adaptive tightening mechanism of the present invention.

In a specific embodiment, as shown in FIGS. 1 to 4 , a multi-point adaptive pressing mechanism includes a main support block 1 , a cylindrical pin 2 , a first pressing block 3 and a second pressing block 4 . The main support block 1 is provided with an installation groove vertically, and the cylindrical pin 2 passes through the installation groove horizontally and is pinned to the piston rod head of the tensioning cylinder below. The main support block 1 is connected to the lower part of the first pressing block 3 and the second pressing block 4 through pin shafts on both sides of the cylindrical pin 2 respectively, that is, the direction of the pin shaft is perpendicular to the cylindrical pin 2 . The first pressing block 3 and the second pressing block 4 are both in the shape of a T-shaped block, and two probe arm ends of the T-shaped block can be pressed against the upper surface of the workpiece.

By setting up two T-block-shaped pressing blocks, the T-block swings along the pin shaft, thereby enabling four-point pressing on the upper surface of the workpiece; at the same time, the main support block 1 and the cylindrical pin 2 are arranged in the middle The position ensures that when the tensioning cylinder is tensioned, the four points around the top provide reverse force balance, thereby ensuring the smooth compression of the workpiece. The multi-point self-adaptive pressing mechanism of the utility model can be tightened at one point, and the multi-point self-adaptive pressing and clamping rough surface has stable structure and good clamping and fixing effect.

In a specific embodiment of the present invention, the piston rod head is provided with a ball joint, and the ball pin of the ball joint is connected to the cylindrical pin 2 .

Through the arrangement of the ball joint, the cylindrical pin 2 swings relative to the piston rod of the tensioning cylinder, so that the four compression points around the top of the mechanism can be swung in multiple directions and then compressed adaptively, which is suitable for casting The compaction of the blank surface.

In a specific embodiment of the present invention, as shown in FIGS. 1 and 2 , the first pressing block 3 is installed on the side wall of the main support block 1 through a stepped pin 8 and a pin screw 9 . The bottom of the tightening block 3 is horizontally provided with a stepped hole with a large outer and an inner small. The stepped pin 8 passes through the stepped hole and is connected to the side wall of the main support block 1 through a pin screw 9 . The installation structure of the second pressing block 4 is the same as that of the first pressing block 3 , and is also installed on the side wall of the main support block 1 through a stepped pin 8 and a pin screw 9 . The pin screw 9 is a countersunk head of a hexagon socket screw and is arranged in the countersunk head through hole of the stepped pin shaft 8 .

Specifically, as shown in FIG. 1 and FIG. 3 , the inner side of the bottom of the first pressing block 3 is provided with a first limit clip edge 301 , and the first limit clip edge 301 can restrict the first pressing block 3 along the stepped pin. The shaft 8 is over-rotated, that is, to prevent the occurrence of a situation where the side point cannot be strained after the T-block is rotated at a large angle. Correspondingly, a second limit clip edge 401 is provided on the inner side of the bottom of the second pressing block 4 .

By opening a stepped hole with a large outer size and a small inner size at the bottom of the first pressing block 3 and assembling the stepped pin shaft 8 , the first pressing block 3 can be prevented from rotating around the stepped pin shaft 8 and being detached from the outside. The arrangement of the first limiting clip 301 can limit the excessive rotation of the first pressing block 3 along the stepped pin shaft 8, thereby ensuring the stability of the structure.

In a specific embodiment of the present invention, as shown in FIGS. 1 to 4 , two probe arms at the top of the first pressing block 3 are provided with bolt through holes 302 , and bolts are provided in the bolt through holes 302 to connect the pressure blocks. 5. Below the probe arm, the pressing block 5 can be pressed against the upper surface of the workpiece. The pressing block 5 is specifically made of wear-resistant cast iron clamp blocks.

By arranging the pressing block 5 under the probe arm on the top of the first pressing block 3, the clamping point directly contacting the workpiece is a replaceable structure, which can be replaced after wear, thereby improving the service life of the equipment.

In a specific embodiment of the present invention, as shown in FIGS. 1 to 4 , two probe arms at the top of the second pressing block 4 are respectively provided with threaded holes in the vertical direction, and the threaded holes are threadedly connected with pressing Screw 6, the bottom end of the pressing screw 6 can be pressed against the upper surface of the workpiece.

Specifically, as shown in FIGS. 1 to 3 , the bottom end of the compression screw 6 is provided as a round head 601 .

Specifically, as shown in FIGS. 1 to 3 , a lock nut 7 is threadedly connected to the top of the compression screw 6 , and the lock nut 7 is locked to the top surface of the second compression block 4 . The compression screw 6 specifically adopts a hexagon socket flat end set screw.

By arranging the compression screws 6 on the probe arms at the top of the second compression block 4, the height of the compression point can be flexibly adjusted, and the bottom end of the compression screw 6 is set as a round head 601, which can reduce the compression contact area , to avoid the occurrence of air pressure on the rough surface. Through the arrangement of the lock nut 7, the compression screw 6 can be locked to avoid loosening.

In a specific embodiment of the present invention, as shown in FIG. 1 and FIG. 4 , the mounting groove of the main support block 1 adopts a waist-shaped hole 101 , and the longitudinal direction of the waist-shaped hole 101 is perpendicular to the first pressing block 3 and The large surface of the second pressing block 4 .

Specifically, as shown in FIG. 4 , a locking screw 10 is also included. The main support block 1 is provided with a threaded hole on the top surface of the long side wall of the waist-shaped hole 101 and is threadedly connected to the locking screw 10 . The inner end of the locking screw 10 The head is pressed against the outer wall of the cylindrical pin 2. The locking screw 10 is specifically a set screw with a hexagon socket with a flat end.

Through the setting of the waist-shaped hole 101, it is convenient to install the ball joint with larger radial size; through the setting of the locking screw 10, the cylindrical pin 2 can be axially locked, so as to avoid the cylindrical pin 2 falling off during use, and the structure Compact and easy to operate.

The process of applying the multi-point self-adaptive compression mechanism of the present utility model is as follows: first, on the workbench, the ball joint that tightens the end of the piston rod of the cylinder is inserted into the waist-shaped hole 101, and the cylindrical pin 2 is passed through the ball joint shown. The middle hole of the sphere is used to lock the end of the cylindrical pin 2 with the locking screw 10. After placing the workpiece to be processed on the worktable, and after each degree of freedom is limited, the tensioning cylinder is activated. The tightening cylinder tightens the cylindrical pin 2 and then drives the main support block 1 to move downward, and the probe arms of the first pressing block 3 and the second pressing block 4 are pressed against the upper surface of the workpiece. In this process, the ball joint of the tensioning cylinder can adjust the swing angle adaptively, and the first pressing block 3 and the second pressing block 4 can rotate along the stepped pin shaft 8 adaptively.

The multi-point self-adaptive pressing mechanism of the utility model is provided by two pressing blocks in the shape of a T-shaped block, and the T-shaped block swings along the pin shaft, thereby enabling four-point pressing on the upper surface of the workpiece; at the same time, The main support block 1 and the cylindrical pin 2 are arranged in the middle position, which ensures that when the tensioning cylinder is tensioned, the four points around the top provide a balance of opposite forces, thereby ensuring the smooth pressing of the workpiece. The multi-point self-adaptive pressing mechanism of the utility model can be tightened at one point, and the multi-point self-adaptive pressing and clamping rough surface has stable structure and good clamping and fixing effect. In addition, through the arrangement of the ball joint, the cylindrical pin 2 swings relative to the piston rod of the tensioning cylinder, so that the four pressing points around the top of the mechanism can be swung in multiple directions and then self-adaptively pressed, which can be applied to For the pressing of the rough surface of the billet. By opening a stepped hole with a large outer size and a small inner size at the bottom of the first pressing block 3 and assembling the stepped pin shaft 8 , the first pressing block 3 can be prevented from rotating around the stepped pin shaft 8 and being detached from the outside. The arrangement of the first limiting clip 301 can limit the excessive rotation of the first pressing block 3 along the stepped pin shaft 8, thereby ensuring the stability of the structure. By arranging the pressing block 5 under the probe arm on the top of the first pressing block 3, the clamping point directly contacting the workpiece is a replaceable structure, which can be replaced after wear, thereby improving the service life of the equipment. By arranging the compression screws 6 on the probe arms at the top of the second compression block 4, the height of the compression point can be flexibly adjusted, and the bottom end of the compression screw 6 is set as a round head 601, which can reduce the compression contact area , to avoid the occurrence of air pressure on the rough surface. Through the arrangement of the lock nut 7, the compression screw 6 can be locked to avoid loosening. Through the setting of the waist-shaped hole 101, it is convenient to install the ball joint with larger radial size; through the setting of the locking screw 10, the cylindrical pin 2 can be axially locked, so as to avoid the cylindrical pin 2 falling off during use, and the structure Compact and easy to operate.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

The above-mentioned embodiments are only to describe the preferred mode of the present utility model, and do not limit the scope of the present utility model. On the premise of not departing from the design spirit of the present utility model, those of ordinary skill in the art can make the technical solutions of the present utility model. Various deformations and improvements of the invention should fall within the protection scope determined by the claims of the present utility model.

Claims (10)

1. The multipoint self-adaptive pressing mechanism is characterized by comprising a main supporting block (1), a cylindrical pin (2), a first pressing block (3) and a second pressing block (4), wherein a mounting groove is vertically formed in the main supporting block (1), and the cylindrical pin (2) horizontally penetrates through the mounting groove and is in pin joint with a piston rod head of a tensioning cylinder below the mounting groove; the main support block (1) is connected with a first pressing block (3) and a second pressing block (4) through pin shafts on two sides of the cylindrical pin (2) respectively; the first pressing block (3) and the second pressing block (4) are both in a T-shaped block shape, and two probe arm ends of the T-shaped block can be pressed on the upper surface of a workpiece.

2. The multipoint adaptive pressing mechanism according to claim 1, wherein: the piston rod head is provided with a ball joint, and a ball pin shaft of the ball joint is connected to the cylindrical pin (2).

3. The multipoint adaptive pressing mechanism according to claim 1, wherein: the first compression block (3) is mounted on the side wall of the main support block (1) through a stepped pin shaft (8) and a pin shaft screw (9), a stepped hole with a large outer part and a small inner part is horizontally arranged at the bottom of the first compression block (3), and the stepped pin shaft (8) penetrates through the stepped hole and is connected to the side wall of the main support block (1) through the pin shaft screw (9); the mounting structure of the second pressing block (4) is consistent with that of the first pressing block (3).

4. The multipoint adaptive pressing mechanism according to claim 3, wherein: a first limiting clamping edge (301) is arranged on the inner side of the bottom of the first pressing block (3), and the first limiting clamping edge (301) can limit the first pressing block (3) to excessively rotate along the stepped pin shaft (8); correspondingly, a second limiting clamping edge (401) is arranged on the inner side of the bottom of the second pressing block (4).

5. The multipoint adaptive pressing mechanism according to claim 1, wherein: the lower parts of the two probe arms at the top of the first pressing block (3) are connected with pressing blocks (5) through bolts, and the pressing blocks (5) can be pressed on the upper surface of the workpiece.

6. The multipoint adaptive pressing mechanism according to claim 1, wherein: the two probe arms at the top of the second pressing block (4) are respectively provided with a threaded hole in the vertical direction, a pressing screw (6) is connected in the threaded hole in a threaded manner, and the bottom end of the pressing screw (6) can be pressed on the upper surface of the workpiece.

7. The multipoint adaptive pressing mechanism according to claim 6, wherein: the bottom end of the compression screw (6) is provided with a round head (601).

8. The multipoint adaptive pressing mechanism according to claim 6 or 7, wherein: the top of the compression screw (6) is in threaded connection with a lock nut (7), and the lock nut (7) is locked on the top surface of the second compression block (4); the compression screw (6) is specifically an inner hexagonal flat end set screw.

9. The multipoint adaptive pressing mechanism according to claim 1, wherein: the mounting groove of the main support block (1) specifically adopts a waist-shaped hole (101), and the long side direction of the waist-shaped hole (101) is perpendicular to the large surfaces of the first pressing block (3) and the second pressing block (4).

10. The multipoint adaptive pressing mechanism according to claim 9, wherein: the support structure is characterized by further comprising a locking screw (10), a threaded hole is formed in the top surface of the long side wall of the waist-shaped hole (101) of the main support block (1) and is in threaded connection with the locking screw (10), and the inner end of the locking screw (10) is pressed on the outer wall of the cylindrical pin (2).

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