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CN-224222628-U - Device for positioning screw plate

CN224222628UCN 224222628 UCN224222628 UCN 224222628UCN-224222628-U

Abstract

The utility model relates to the technical field of cold rolling screw plates, in particular to a device for positioning a screw plate, which comprises a base, wherein a rectangular groove is arranged in the middle of the base, a chassis is also included, the front end of the chassis is provided with a hole and is threaded, the middle is in interference fit connection with the base, and the front end of the chassis is fixedly connected with a screw plate connecting mechanism through threads. The connecting mechanism is connected with and fixed to the thread rolling plate. And four base supports are arranged on the periphery of the base and are connected with the base. The rotary table is connected with the upper part of the rotary table, the lower arm is connected with the upper part of the rotary table through the opening, and the lower arm consists of an inner shell and an outer shell. The movable screw plate connecting mechanism is connected with the movable screw plate, and the staggered screw pitch of the two plates and the distance between the screw plates can be randomly adjusted through the rotary motion of the lower arm and the upper arm, so that the purpose of improving the qualification rate of screw threads of screw bolts is achieved.

Inventors

  • ZHEN NI
  • Tian Jiqiang
  • ZHANG XIANGWEI

Assignees

  • 天津科技大学

Dates

Publication Date
20260512
Application Date
20250612

Claims (5)

  1. 1. The device capable of being used for positioning the screw plate comprises a base, a rectangular groove is formed in the middle of the base, the device is characterized by further comprising a base plate, a base plate support, a fixed screw plate connecting mechanism, a rotary table, a lower arm, an arm connection, an upper arm, a movable screw plate connecting mechanism and a rotary table, wherein the upper surface of the base plate is provided with a cylindrical lug, the lower surface of the rotary table is provided with a rectangular lug, the rectangular lug is in interference fit with the rectangular groove of the base, the base plate is wrapped by the rectangular lug, meanwhile, the front end of the base plate is provided with an inner thread, the inner thread is formed in the hole, the connecting thread at one end of the fixed screw plate connecting mechanism is in threaded connection with the inner thread in the hole at the front end of the base plate, the other end of the fixed screw plate connecting mechanism is provided with a cylindrical lug, the cylindrical lug is in the back of the fixed screw plate connecting mechanism, the cylindrical lug is in the rotary table, the lower arm is connected with the lower arm, the upper arm is connected with the upper arm, the movable screw plate connecting mechanism is arranged on the upper surface of the rotary table, the rotary table is provided with the cylindrical lug on the upper surface of the rotary table, the rotary table is in interference fit with the cylindrical lug on the upper surface of the base plate, the rotary table is connected with the rotary table through a key, the rotary table is connected with the rotary table through the rotary table, the rotary table is in the interference fit with the cylindrical lug is formed with the cylindrical lug on the upper arm, and the rotary table is connected with the rotary table through the rotary table, and the rotary table is connected with the rotary table through the rotary table and the rotary table is connected with the movable screw connecting arm.
  2. 2. The device for positioning a thread rolling die according to claim 1, wherein the chassis supports are provided with 4 screw holes, 2 screw holes are formed in the top of each chassis support, two round holes are formed in the bottom of each chassis support, the screw holes are connected with the screw holes of the chassis through bolts, and the round holes in the bottom of each chassis support are fixed through positioning pins.
  3. 3. The device for positioning a thread rolling die according to claim 1, wherein the surface of the base plate is provided with a plurality of round holes for inserting and fixing the fixing pins.
  4. 4. A device for positioning a screw plate according to claim 3, wherein the fixing pin is used for inserting the fixing pin into the positioning round hole of the rotary plate after the rotary plate has been positioned.
  5. 5. The apparatus for positioning a thread rolling die as claimed in claim 1, wherein the lower arm is connected by welding the inner and outer lower arm shells.

Description

Device for positioning screw plate Technical Field The utility model relates to the technical field of cold rolling screw plates, in particular to a device for positioning a screw plate. Background The thread rolling die is a cutting tool special for thread processing and is widely applied to the field of machine manufacturing. The method can provide high-precision and high-efficiency thread cutting machining, and is suitable for manufacturing and repairing internal and external threads. The machining quality and the working efficiency can be greatly improved by correctly using and maintaining the thread rolling die. The common rolling of the two screw plates is generally composed of a fixed screw plate and a movable screw plate, namely a static plate and a movable plate, and the screw rolling process is completed by tangential feeding of the movable screw plate. The screw plate has excellent workability, can design corresponding tooth shapes for different annular grooves, has good assembly property, and can be assembled together to form an integrated plate, so that the screw plate has excellent synchronous rubbing performance, and can better solve the problem of screw plate with complex structure of titanium alloy bolts. The thread rolling die is used as a standard thread rolling die and is widely applied to production. Basically, the thread rolling process belongs to a special case of thread rolling process, and the principle is that the diameter of a thread rolling wheel is enlarged to be extremely, and the proper length of the thread rolling wheel is taken as a die for forming thread of the thread rolling. The thread rolling plate is used for rolling threads in a tangential feeding method, namely, blanks are moved to a working area in a horizontal or vertical mode, and metal flow is formed. The workpiece is driven to rotate through the movement of the thread rolling plate, and threads are formed by twisting. The thread rolling plate is mainly arranged on a thread rolling machine, the thread rolling machine is professional equipment for rolling threads, and proper distances among plates are required to be selected according to the requirements of thread tooth form, large diameter, medium diameter, small diameter and the like before thread rolling. Meanwhile, in the thread rolling process, the two plates are required to be staggered by half pitch, so that the quality of threads is guaranteed, the processing efficiency is improved, and the service life of a tool is prolonged. However, at present, the staggered distance generally needs a worker to manually operate, and because of the angle and the reason that the thread rolling plates need to be replaced when threads with different specifications are processed, the accurate distance between the plates cannot be selected each time, errors are generated, so that threads are folded or burrs are generated at the bottoms of the threads, and the production efficiency is reduced. Disclosure of utility model In order to effectively solve the problems in the background technology, the utility model provides a device for positioning a thread rolling die. The specific scheme is as follows: The device for positioning the screw plate comprises a base, wherein a rectangular groove is formed in the middle of the base, the device further comprises a base plate, a base plate support, a screw plate connecting mechanism and a screw plate fixing mechanism, the base plate is provided with 8 threaded holes, a cylindrical lug is arranged on the upper surface of the base plate, a rectangular lug is arranged on the lower surface of the base plate, and the base plate is in interference fit with the rectangular groove of the base plate and wrapped. Meanwhile, the front end of the chassis is provided with a hole, an internal thread is arranged in the hole, and the internal thread in the hole of the front section of the chassis is connected with the connecting thread at one end of the connecting mechanism of the fixed thread rolling plate through a thread. The other end of the fixed screw plate connecting mechanism is provided with a cylindrical lug which forms a revolute pair with the cylindrical groove on the back surface of the fixed screw plate. The movable screw plate is characterized by further comprising a turntable, a chassis connection, a lower arm, an arm connection, an upper arm, a forearm, a movable screw plate connection mechanism and a movable screw plate. The rotary table is characterized in that a round hole is formed in the lower surface of the rotary table and forms a revolute pair with a cylindrical lug on the upper surface of the base plate, the upper surface of the rotary table is provided with a positioning round hole and a key groove, the rotary table is connected with the base plate through a key, the base plate is connected with a cylindrical lug and forms a revolute pair with a lower arm, the lower arm is connected with an arm through a revolute pair connectin