CN111331161A - Mechanical linkage top - Google Patents

Abstract

The invention relates to a mechanical linkage center, and belongs to the technical field of tailstock or center in turning machine tools. The device comprises a fixed base body, wherein one end of the fixed base body is connected with a movable center capable of sliding along the axis direction of the fixed base body, and a sliding cover body capable of sliding along the axis direction of the fixed base body is buckled on the fixed base body; the fixed seat body is provided with a mounting hole, the live center can be connected in the mounting hole in a sliding way, the sliding cover body is provided with a through hole, and the live center penetrates out of the through hole; the fixed base body is also provided with a lever mechanism, one end of the lever mechanism acts in the annular groove on the movable center, and the other end of the lever mechanism acts on the inner end surface of the sliding cover body so that the sliding cover body can be driven to slide reversely through the lever mechanism when the movable center is stressed to slide towards the fixed base body; and the outer end face of the sliding cover body is provided with a plurality of driving apexes so as to act on the end face of the part along with the reverse sliding. The centre has simple structure and stable and reliable use, and can obtain the effects of self-balancing of force for transmitting torque and centering, and reliable torque transmission and centering.

Description

Mechanical linkage top

technical field

The invention belongs to the technical field of tailstocks or tips in turning machine tools, and particularly relates to a mechanical linkage tip.

Background technique

In the turning process, the clamping of the parts to be turned is mostly the traditional one-clamp-one-top form, which is stable and reliable. The disadvantage is that the clamping efficiency is low, and the clamping part of the chuck affects the overall one-time processability; The double top and the core clip are equipped on the spindle end to transmit torque to the part and prevent machining idling. The entire outer surface of the part can be processed at one time, but the processing stability is insufficient, and the use of the core clip also affects the clamping efficiency. For this reason, the technicians have carried out further research and design, and there is a transferable power tip as disclosed in CN107855546A. The tip can be retracted and the spring is compressed during the retraction process. It is also equipped with a fixed drive crankset and transmission teeth to resist The end face of the part is connected to the part to transmit torque to the part, but the centering effect is limited by simply compressing the spring until the end face of the part is in contact with the transmission teeth on the fixed drive crankset. , through the drive claw contacting the end face of the part to transmit torque to the part and in a floating form, but its structure is too complicated, and the drive claw is slidably connected to the seat body, and the drive claw needs to transmit torque, which will cause poor stability and easy loosening of the drive claw. The disadvantages of the use effect; the seat needs to be disassembled when the driving claw is replaced, which is inconvenient for maintenance.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a mechanical linkage top, which avoids the problems of complex structure and insufficient stability of the end-driven top, and achieves the effects of self-balancing of torque transmission and centering force, and reliable torque transmission and centering. .

To achieve the above object, the present invention provides the following technical solutions:

The mechanical linkage top includes a fixed base, and one end of the fixed base is connected with a movable top that can slide along its axis; the end of the fixed base is also buckled with a sliding cover that can slide along its axis; the The fixed seat body is provided with an installation hole, the movable tip can be slidably connected in the installation hole, the sliding cover body is provided with a through hole for the movable tip to pass through, and the movable tip passes through the through hole; The end of the fixed seat body is also provided with a lever mechanism, one end of the lever mechanism acts on the ring groove on the movable top, and the other end acts on the inner end surface of the sliding cover body facing the fixed seat body, so that the movable top is subjected to force toward the fixed seat. When sliding in the base, the sliding cover body can be driven to slide reversely through a lever mechanism; a plurality of driving tips are arranged on the outer end surface of the sliding cover body to act on the end surface of the part along with the reverse sliding.

Further, all the driving tops are equally distributed with the active top as the center.

Further, the sliding cover body is provided with an insertion hole for inserting the driving tip, and the driving tip is inserted into the corresponding insertion hole, and the lateral side of the insertion hole is provided with a fastening screw to The top is driven to fasten; the fastening screw is close to the bottom end of the insertion hole.

Further, the lever mechanism includes a lever, the end face of the fixed seat is provided with a mounting groove, the mounting groove is opened along the radial direction of the mounting hole and penetrates the single side wall of the mounting hole, and the lever is rotatably connected to the mounting hole through a rotating shaft. In the installation groove, the rotating shaft is perpendicular to the movable top; the inner end of the lever acts on the ring groove on the movable top, and the outer end of the lever acts on the inner end surface of the sliding cover body facing the fixed seat.

Further, the number of the lever mechanisms is several sets, all of which are equally distributed around the movable top.

Further, the outer edge of the inner end surface of the sliding cover body is provided with a ring of blocking edges extending towards the fixed seat body, and is in the form of a socket connection corresponding to the outer shape of the fixed seat body to buckle the end of the fixed seat body, and this end of the fixed seat body is The end face is machined with a circle of sinking steps, the inner end face of the sliding cover body is provided with an annular boss corresponding to the sinking step, and the outer end of the lever acts on the inner end surface of the annular boss.

Further, the sliding cover body is connected to a guide reset mechanism, and the guide reset mechanism includes a guide shaft, the guide shaft is parallel to the movable top and passes through the sliding cover body and the fixed seat body at the same time, and one end of the guide shaft is provided with a large diameter. The head is located on the outer end face of the sliding cover body to limit the axial movement of the guide shaft in one direction; the other end face of the fixed seat body is provided with a countersunk head deep hole, and the countersunk head deep hole is coaxial with the guide shaft And the inner diameter is larger than the guide shaft, the free end of the guide shaft is located in the deep hole of the countersunk head and is connected with a washer and a screw that restricts the washer, and a helical compression spring is compressed between the washer and the bottom surface of the deep hole of the countersunk head for use. For reset after reverse sliding, the helical compression spring is sleeved on the guide shaft.

Further, the number of the guide reset mechanism is several sets, which are equally distributed with the movable top as the center.

Further, the other end of the fixed seat body is connected to a flange connection plate, the flange connection plate is connected to the fixed seat body through several connecting screws evenly distributed in the circumferential direction, and the flange connection plate covers the deep hole of the countersunk head to prevent impurities. The outer edge of the flange connection plate is provided with a number of through holes evenly distributed in the circumferential direction so as to be connected with the main shaft of the machine tool.

Further, a center hole is provided on the flange connecting plate, and the center hole is communicated with the installation hole to avoid the air-closing effect on the sliding of the movable top.

The beneficial effects of the present invention are:

1. The mechanical linkage tip of the present invention has a simple structure and reliable action; the driving thimbles are fixedly arranged on the sliding cover body, and are uniformly driven by the sliding cover body, which can ensure the stability of the driving thimble in use and the transmission torque. When the movable top is forced to slide toward the fixed seat, the sliding cover body can be driven to slide in the reverse direction, and the driving top can be driven to move in the reverse direction to act on the end face of the part to be processed, so as to obtain torque transmission and centering between centering and driving. The force is self-balancing, the torque transmission and centering are stable, and the use is simple and reliable.

2. The mechanical linkage tip of the present invention can be used for common lathes, horizontal CNC lathes, vertical turning machining centers and other equipment, and can be connected to the spindle end of the equipment that is usually connected to the chuck. The tailstock top (usually the hydraulic top) pushes the part, contacts the movable top and continues to push to complete the subsequent mechanism action; after the parts are processed and removed, the driving top and the movable top are automatically reset to prepare for the next clamping , greatly improve the clamping efficiency, reduce labor intensity and save costs.

3. The driving tip of the mechanical linkage tip of the present invention is detachable, which is convenient for replacement and maintenance, and reduces the use cost.

Other advantages, objects, and features of the present invention will be set forth in the description that follows, and will be apparent to those skilled in the art based on a study of the following, to the extent that is taught in the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.

Description of drawings

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be preferably described in detail below with reference to the accompanying drawings, wherein:

Fig. 1 is the structural representation of the mechanical linkage tip of a specific embodiment;

FIG. 2 is a side view of a fixed seat in a specific embodiment.

Reference number:

Flange connection plate 1, fixed seat body 2, sliding cover body 3, guide shaft 4, movable center 5, lever 6, rotating shaft 7, driving center 8, fastening screw 9, connecting screw 10, helical compression spring 11, washer 12. Screw 13, annular groove 14, baffle edge 15, annular boss 16, countersunk deep hole 17, through hole 18, central hole 19, installation hole 20, installation groove 21, sinking step 22.

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations of the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are 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 be It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation of the present invention. situation to understand the specific meaning of the above terms.

Please refer to FIG. 1 to FIG. 2 , it is a mechanical linkage top, including a fixed base 2, one end of the fixed base 2 is connected with a movable top 5 that can slide along its axis direction; the end of the fixed base 2 is also buckled There is a sliding cover body 3 that can slide along its axis direction; a mounting hole 20 is opened on the fixed seat body 2, and the movable top 5 can be slidably connected in the mounting hole 20. There is a through hole 18 for the movable top 5 to pass through, and the top end of the movable top 5 passes through the through hole 18; this end of the fixed seat body 2 is also provided with a lever mechanism, and one end of the lever mechanism acts on the movable top. In the ring groove 14 on the 5, the other end acts on the inner end surface of the sliding cover 3 toward the fixed base 2 along its axial direction, so that when the movable top 5 is forced to slide toward the fixed base 2, it can be driven to slide by a lever mechanism. The cover body 3 slides in the reverse direction; the outer end surface of the sliding cover body 3 is provided with a number of driving tips 8 to act on the end face of the part with the reverse sliding. The length should be set in combination with the stroke of the lever mechanism to complete the action of the above mechanism; during implementation, both the fixed seat body 2 and the sliding cover body 3 are made of rotary parts to facilitate processing.

The mechanical linkage tip of the embodiment has a simple structure and reliable action; the driving thimbles are fixedly arranged on the sliding cover body 3, and are driven by the sliding cover body 3 uniformly, which can ensure the stability of the driving thimble in use and the transmission torque. When the movable center 5 is forced to slide toward the fixed base 2, the sliding cover 3 can be driven to slide in the reverse direction, and the driving center 8 can be driven to move in the reverse direction to act on the end face of the part to be processed, and transfer between centering and driving. The torque and centering force are self-balanced, the torque transmission and centering are stable, and the use is simple and reliable.

The mechanical linkage tip of the embodiment can be used for equipment such as ordinary lathes, horizontal CNC lathes, vertical turning machining centers, etc. It can be connected to the main shaft end of the equipment that is usually connected to the chuck. After the parts are loaded, they pass through the tailstock at the other end. The top (usually a hydraulic top) pushes the parts, contacts the movable top 5 of the embodiment and continues to push to complete the subsequent mechanism action; greatly improving the clamping efficiency, reducing labor intensity and saving costs.

The sliding cover body 3 is provided with an insertion hole for inserting the driving tip 8, and the driving tip 8 is inserted into the corresponding insertion hole, and the lateral side of the insertion hole is provided with a fastening screw 9 for insertion. The driving center 8 in the connection hole is fastened; the fastening screw 9 is close to the bottom end of the insertion hole, and when the sliding cover 3 is a rotating piece coaxial with the movable center 5, the fastening screw 9 is located at the bottom of the movable center 5. In the radial direction, the outer side wall of the sliding cover body 3 is penetrated.

In this way, the driving tip 8 is detachably connected, which is convenient for replacement and maintenance, and reduces the use cost.

The lever mechanism includes a lever 6, the end face of the fixed seat 2 is provided with an installation groove 21, the installation groove 21 is opened along the radial direction of the installation hole 20 and penetrates through the single side wall of the installation hole 20, the lever 6 The rotating shaft 7 is rotatably connected to the installation groove 21, and the rotating shaft 7 is perpendicular to the movable center 5; the inner end of the lever 6 acts on the ring groove 14 on the movable center 5, and the outer end of the lever 6 acts on the sliding cover The body 3 faces the inner end surface of the fixed seat body 2 .

In this way, a feasible installation method of the lever mechanism is provided, and the connection is simple and reliable.

Wherein, the outer edge of the inner end surface of the sliding cover body 3 is provided with a ring of blocking edges 15 extending toward the fixed seat body 2 and corresponding to the shape of the fixed seat body 2 in the form of socket connection to buckle the end of the fixed seat body 2, The end face of the fixed base body 2 is machined with a circle of sinking steps 22, and the inner end face of the sliding cover body 3 is provided with an annular boss 16 corresponding to the sinking steps 22. The outer end of the lever 6 acts on the ring. On the inner end surface of the shaped boss 16 .

In this way, the force transmission effect of the lever 6 is ensured, and the connection between the fixed seat body 2 and the sliding cover body 3 is more reasonable and the strength is better; The annular boss 16 is used to contact the lever 6 to receive force without intermediate transmission, which ensures the force transmission effect of the lever 6 and is reliable in use.

The sliding cover body 3 is connected to a guide reset mechanism, and the guide reset mechanism includes a guide shaft 4, which is parallel to the movable top 5 and passes through the sliding cover body 3 and the fixed seat body 2 at the same time. The guide shaft 4 One end is provided with a head with a large diameter (larger than the diameter of the guide shaft 4) and the head is located on the outer end face of the sliding cover body 3 to limit the axial movement of the guide shaft 4 in one direction; the other side of the fixed seat body 2 The end face is provided with a countersunk deep hole 17, the countersunk deep hole 17 is coaxial with the guide shaft 4 and has a larger inner diameter than the guide shaft 4, and the free end of the guide shaft 4 is located in the countersunk deep hole 17 and is connected with the washer 12 and The screw 13 that restricts the washer 12, the screw 13 and the washer 12 can be an integral structure, the screw 13 is coaxial with the guide shaft 4 and is threadedly connected to its end surface, and a screw is compressed between the washer 12 and the bottom surface of the countersunk deep hole 17. The compression spring 11 is used for reset after reverse sliding, and the helical compression spring 11 is sleeved on the guide shaft 4; during implementation, the outer end surface of the sliding cover 3 can be provided with a sinking platform, and the head of the guide shaft 4 falls on the sinking platform inside so as not to bulge.

In this way, the realization of the centering and driving self-balancing mechanism is further ensured; after each part is processed and removed, under the action of the spring force of the helical compression spring 11, the sliding cover 3 moves to the left and resets, and is also driven by the lever 6 The movable top 5 is reset, ready for the centering and drive torque transmission of the next clamping.

The other end of the fixed seat body 2 is connected to the flange connection plate 1 , and the flange connection plate 1 is connected to the fixed seat body 2 by several connecting screws 10 evenly distributed in the circumferential direction, and the flange connection plate 1 covers the depth of the countersunk head. The hole 17 has the effect of preventing miscellaneous dust, and the outer edge of the flange connecting plate 1 is provided with a plurality of through holes 18 evenly distributed in the circumferential direction so as to be connected with the main shaft of the machine tool. The flange connection plate 1 is provided with a central hole 19 , and the central hole 19 is communicated with the mounting hole 20 to prevent the air closure from affecting the sliding of the movable top 5 .

During implementation, in order to better ensure the use effect, all the driving tops 8 are equally distributed with the movable top 5 as the center; the number of the lever mechanisms is several sets, all of which are equally distributed with the movable top 5 as the center; the There are several sets of guide reset mechanisms, all of which are equally distributed with the movable top 5 as the center. In the specific arrangement, three sets of driving tops 8, three sets of lever mechanisms, three sets of guide reset mechanisms, and three sets of connecting screws 10 can be selected to be implemented in the circumferential direction. The driving tops 8, lever mechanisms (lever 6) and connecting screws 10 are located at the same Evenly distributed in the circumferential position of the guide reset mechanism (guide shaft 4) and the aforementioned three units are arranged in a staggered manner, which can ensure the flexibility of the mechanism and the use effect.

In practice, the fastening screws 9 use standard hexagon socket flat end set screws to avoid protruding; the screws 13 and the connecting screws 10 use standard hexagon socket cylindrical screws of corresponding specifications so as to be screwed by tools.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should all be included in the scope of the claims of the present invention.

Claims (10)

1. The mechanical linkage top includes a fixed seat, and one end of the fixed seat is connected with a movable top that can slide along its axis; A sliding cover body; an installation hole is opened on the fixed base body, the movable top can be slidably connected in the installation hole, a through hole for the movable top to pass through is opened on the sliding cover, and the movable top is threaded from the mounting hole. The through hole is pierced; the end of the fixed seat is also provided with a lever mechanism, one end of the lever mechanism acts on the ring groove on the movable top, and the other end acts on the inner end surface of the sliding cover body facing the fixed seat body to When the movable tip slides toward the fixed seat under force, the sliding cover body can be driven to slide reversely by the lever mechanism; the outer end surface of the sliding cover body is provided with several driving tips to act on the end surface of the part along with the reverse sliding. 2 . The mechanical linkage top according to claim 1 , wherein all the driving tops are equally distributed with the movable top as the center. 3 . 3. The mechanical linkage tip according to claim 2, wherein the sliding cover body is provided with an insertion hole for inserting the driving tip, and the driving tip is inserted into the corresponding insertion hole, and the horizontal direction of the insertion hole is A fastening screw is arranged on the side for fastening the driving tip in the insertion hole; the fastening screw is close to the bottom end of the insertion hole. 4 . The mechanical linkage center according to claim 1 , wherein the lever mechanism comprises a lever, the end face of the fixed seat is provided with a mounting groove, and the mounting groove is opened along the radial direction of the mounting hole and penetrates the mounting hole. 5 . The single side wall of the lever, the lever is rotatably connected to the installation groove through the rotating shaft, and the rotating shaft is perpendicular to the movable top; the inner end of the lever acts on the ring groove on the movable top, and the outer end of the lever acts on the sliding cover The body faces the inner end surface of the fixed seat body. 5 . The mechanical linkage top according to claim 4 , wherein the number of the lever mechanisms is several sets, which are equally distributed with the movable top as the center. 6 . 6. The mechanical linkage top according to claim 4, wherein the outer edge of the inner end face of the sliding cover body is provided with a ring of retaining edges extending toward the fixed seat body and corresponding to the shape of the fixed seat body in the form of socket and socket connection In order to buckle the end of the fixed seat body, the end face of the fixed seat body is processed with a circle of sinking steps, the inner end surface of the sliding cover body is provided with an annular boss corresponding to the sinking steps, and the outer surface of the lever is provided. The end acts on the inner end face of the annular boss. 7 . The mechanical linkage center according to claim 1 , wherein the sliding cover body is connected to a guide reset mechanism, and the guide reset mechanism includes a guide shaft, and the guide shaft is parallel to the movable center and passes through the slide cover at the same time. 8 . One end of the guide shaft is provided with a large-diameter head, and the head is located on the outer end face of the sliding cover to limit the axial movement of the guide shaft in one direction; the other end face of the fixed base is provided with a sinker. The deep hole of the countersunk head is coaxial with the guide shaft and has a larger inner diameter than the guide shaft. The free end of the guide shaft is located in the deep hole of the countersunk head and is connected with a washer and a screw that restricts the washer. A helical compression spring is compressed between the bottom surfaces of the deep hole of the head for restoring after reverse sliding, and the helical compression spring is sleeved on the guide shaft. 8 . The mechanical linkage top according to claim 7 , wherein the number of the guide and reset mechanisms is several sets, which are equally distributed with the movable top as the center. 9 . 9. The mechanical linkage tip according to claim 7, characterized in that: the other end of the fixed seat is connected to a flange connecting plate, and the flange connecting plate is connected to the fixed seat through a number of circumferentially evenly distributed connecting screws. The flanged connecting plate covers the deep hole of the countersunk head to prevent dust, and the outer edge of the flanged connecting plate is provided with a plurality of through holes evenly distributed in the circumferential direction to be connected with the main shaft of the machine tool. 10 . The mechanical linkage top according to claim 9 , wherein the flange connection plate is provided with a central hole, and the central hole is communicated with the mounting hole to prevent the air-locking from affecting the sliding of the movable top. 11 .

Images