CN211162987U

CN211162987U - Square joint milling fixture

Info

Publication number: CN211162987U
Application number: CN201922149390.XU
Authority: CN
Inventors: 刘旭; 汪红兵; 陈琪; 盖立武
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-08-04
Anticipated expiration: 2029-12-04

Abstract

The utility model provides a square joint milling fixture, comprising a base plate, the backup pad, the processing platform, centre gripping subassembly and location rotating assembly, the bottom plate be provided with a pair of parallel backup pad on the surface, the processing platform sets up and is located on the position between a pair of backup pad and through a fastener and backup pad fixed connection on the bottom plate surface, the both sides of processing platform are provided with the fixed plate, centre gripping subassembly movable setting is on the processing platform and rather than arbitrary fixed plate cooperation constitution centre gripping position with centre gripping square joint, location rotating assembly and centre gripping subassembly parallel arrangement, and location rotating assembly is including a location benchmark piece, location benchmark piece sets up the position that is located the centre gripping position at the processing platform, location benchmark piece has two adjacent and can with the square joint both ends respectively the gomphosis setting the location benchmark face. The utility model discloses when solving square joint and holing, tapping through general flat tongs clamping on the milling machine, need relapse the not high problem of clamping and positioning accuracy to further improve machining efficiency.

Description

Square joint milling fixture

Technical Field

The utility model relates to a machining technology field, concretely relates to square joint milling fixture.

Background

With the continuous development of the industry, the hydraulic system has wide application in the industries of automobiles, aviation, aerospace, pipelines and the like, and the pressure energy and the mechanical energy of a liquid medium in the system are converted mutually through hydraulic equipment to achieve the purpose of force and torque transmission. The hydraulic system converts the pressure energy of the liquid into mechanical energy, so the sealing performance of the whole system is particularly high. The joint parts are used as key parts for connecting high-pressure oil pipes, and the machining precision of the joint parts directly influences the sealing performance of a system and the normal operation of equipment. Referring to fig. 1 to 2, the square joint 6 has a circular through hole 29 in the center, a circular groove 20 is recessed along the axial direction of the circular through hole 29 at one side of the circular through hole 29 at the top end, a cylindrical boss 22 is protruded outward along the axial direction of the circular through hole 29 at one side of the circular through hole 29 at the bottom end, and four threaded holes 17 are uniformly formed in two end surfaces of the square joint 6. Because the two end faces of the square joint are not common planes, the conventional processing method on the milling machine is to clamp the side face of the square joint through a general flat tongs, firstly process four threaded holes on any end face of the square joint, and then clamp and process four threaded holes on the other end face again. In the machining process, the situation of inaccurate positioning is easy to occur when the square connector is clamped by the universal flat tongs, so that the square connector needs to be re-set during machining every time, and the repeated clamping efficiency is too low.

In order to solve the existing problems, a milling clamp specially aiming at the square joint needs to be designed to realize quick clamping and accurate positioning, so that the processing efficiency is improved.

Disclosure of Invention

In view of this, the utility model aims at providing a square joint milling fixture aims at solving square joint and when holing, tapping through general flat-nose pliers clamping on the milling machine, need relapse the problem that clamping and positioning accuracy are not high to further improve machining efficiency.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

A square joint milling fixture comprises a bottom plate, a supporting plate, a processing table, a clamping assembly and a positioning rotating assembly, a pair of parallel supporting plates are arranged on the surface of the bottom plate, the processing table is arranged on the position between the pair of supporting plates on the surface of the bottom plate and is fixedly connected with the supporting plates through a fastener, the two sides of the processing table are provided with fixed plates, the clamping assembly is movably arranged on the processing table and is matched with any one of the fixed plates to form a clamping position for clamping a square joint, the positioning rotating assembly and the clamping assembly are arranged in parallel, the positioning rotating assembly comprises a positioning reference block which is arranged on the processing table and is positioned at the clamping position, the positioning reference block is provided with two adjacent positioning reference surfaces which can be respectively embedded with the two ends of the square joint.

Preferably, the clamping assembly includes a thrust rod and a thrust block, the thrust rod penetrates through the fixing plate on either side of the machining table and is in threaded connection with the fixing plate, and the thrust block abuts against and contacts with an end of the thrust rod and is matched with the fixing plate of the machining table which is not connected with the thrust rod to form the clamping position.

Preferably, the positioning and rotating assembly further comprises a rotating rod, the rotating rod is respectively penetrated through and connected with the thrust rod in a penetrating manner, the fixed plate and the thrust block are located at the clamping position from one end of the thrust rod, the rotating rod is in threaded connection with one side face of the positioning reference block, the positioning reference block is defined as a connecting face from one side face of the rotating rod, a threaded hole is formed in the center of the connecting face, and the two positioning reference faces are adjacent to each other between the connecting faces.

As preferred, the location reference surface divide into top reference surface and bottom reference surface, top reference surface epirelief is equipped with the circular boss that a shape and square joint top circular groove shape correspond, the top of circular boss is equipped with the circular arc chamfer, the circumference outside of circular boss is provided with the circular arc recess, the optional position department of circular boss still is equipped with a breach, the indent is equipped with the indent round hole that a shape and square joint bottom cylindricality boss shape correspond on the bottom reference surface, the indent round hole with the junction of bottom reference surface is equipped with the circular arc chamfer.

Preferably, the positioning rotating assembly further comprises a positioning pressing plate and a positioning screw, a threaded hole is formed in the center of the circular boss of the top end reference surface, a threaded hole is also formed in the center of the concave circular hole of the bottom end reference surface,

When the bottom of square joint inlays to be put during the bottom reference surface, the top at square joint is established to the locating pressure plate lid, set screw wears to establish in proper order through locating pressure plate, the inside circular through-hole of square joint with screw hole threaded connection on the bottom reference surface, inlays to be put when the top of square joint during the top reference surface, the bottom at square joint is established to the locating pressure plate lid, set screw wears to establish in proper order through locating pressure plate, the inside circular through-hole of square joint with screw hole threaded connection on the top reference surface.

Preferably, the processing table is further provided with a movable cushion block at the clamping position, the bottom of the movable cushion block is provided with a pair of wedge-shaped protruding tongues arranged in parallel, the surface of the processing table at the clamping position is provided with a pair of sliding grooves arranged in parallel corresponding to the shape of the wedge-shaped protruding tongues, and the side surface of the movable cushion block is provided with a handle.

Preferably, the milling fixture further comprises a fixing pressure plate and a fixing screw, the fixing pressure plate is overlapped on the surfaces of the processing table and the supporting plate, and the fixing screw penetrates through the fixing pressure plate and is in threaded connection with the surface of the bottom plate so as to fix the processing table and the supporting plate on the surface of the bottom plate.

Compared with the prior art, the utility model provides a pair of square joint milling fixture, this milling fixture contained location reference block can closely laminate the setting with square top, the bottom that connects to fasten through set screw, pressure disk and set nut, the centre gripping subassembly is used in the reference block of location, thereby both cooperate and guaranteed square joint perpendicular direction and the ascending accurate positioning of horizontal direction and the machining stability in the course of working. After the bottom end of the square joint is machined, the square joint is taken down from the positioning reference block, the movable cushion block is pulled out in a translation mode to provide a rotating space for the positioning reference block, the rotating rod rotates to drive the positioning reference block to rotate, the bottom end reference surface is rotated to be most ejected, the movable cushion block is inserted again, the positioning reference block is embedded with the bottom end of the square joint, and the top end of the square joint is machined after clamping is completed. The milling fixture is simple in structure, accurate in positioning and high in machining efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic top view of a square joint;

FIG. 2 is a schematic view of the bottom end structure of a square joint;

Fig. 3 is a schematic structural view of the square joint milling fixture and the square joint after being clamped;

Fig. 4 is a schematic structural diagram of a positioning reference block in a square joint milling clamp provided by the present invention.

Reference numerals and component parts description referred to in the drawings:

1. A base plate; 2. a support plate; 3. a processing table; 4. fixing the pressing plate; 5. a set screw; 6. a square joint; 7. positioning a reference block; 8. a thrust rod; 9. a thrust block; 10. a first fixing plate; 11. a second fixing plate; 12. a movable cushion block; 13. a wedge-shaped boss; 14. a handle; 15. rotating the rod; 16. a connecting surface; 17. a threaded hole; 18. a top datum plane; 19. a bottom end datum plane; 20. a circular groove; 21. a circular boss; 22. a cylindrical boss; 23. an inner concave round hole; 24. chamfering with an arc; 25. a circular arc groove; 26. a notch; 27. Positioning a pressing plate; 28. a set screw; 29. and a circular through hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 3 to 4, the square joint milling fixture comprises a bottom plate 1, a support plate 2, a processing table 3, a clamping assembly, a positioning rotating assembly, a fixed pressure plate 4 and a fixing screw 5. The surface of the bottom plate 1 is provided with a pair of parallel supporting plates 2, the processing table 3 is arranged on the surface of the bottom plate 1 at a position between the pair of supporting plates 2, the fixed pressing plate 4 is lapped on the surfaces of the processing table 3 and the supporting plates 2, and the fixing screw 5 penetrates through the fixed pressing plate 4 and is in threaded connection with the surface of the bottom plate 1 so as to fix the processing table 3 and the supporting plates 2 on the surface of the bottom plate 1.

The two sides of the processing table 3 are vertically extended to form fixing plates, the clamping assembly is movably arranged on the processing table 3 and is matched with any one of the fixing plates to form a clamping position for clamping the square joint 6, the positioning rotating assembly is arranged in parallel with the clamping assembly and comprises a positioning reference block 7, the positioning reference block 7 is arranged on the processing table 3 and is located at the clamping position, and the positioning reference block 7 is provided with two adjacent positioning reference surfaces which can be respectively embedded with the two ends of the square joint 6.

Specifically, the clamping assembly comprises a thrust rod 8 and a thrust block 9, the thrust rod 9 penetrates through a fixing plate on any side of the machining table 3 and is in threaded connection with the fixing plate, the fixing plate through which the thrust rod 8 penetrates is defined as a first fixing plate 10, and the other fixing plate is defined as a second fixing plate 11. The thrust block 9 is in abutting contact with the end of the thrust rod 8 and is matched with a fixed plate of the machining table 3 which is not connected with the thrust rod 8 to form a clamping position, namely the thrust block 9 and the second fixed plate 11 form the clamping position.

The processing table 3 is further provided with a movable cushion block 12 at the position of the clamping position, the bottom of the movable cushion block 12 is provided with a pair of wedge-shaped protruding tongues 13 which are arranged in parallel, the surface of the processing table 3 at the clamping position is provided with a pair of sliding grooves which are arranged in parallel corresponding to the shape of the wedge-shaped protruding tongues 13, and the side surface of the movable cushion block 12 is provided with a handle 14.

The positioning and rotating assembly specifically comprises the positioning reference block 7 and a rotating rod 15, wherein the rotating rod 15 is respectively penetrated through a fixing plate, namely a first fixing plate 10 and a thrust block 9, which are in penetrating connection with the thrust rod 8, so that one end of the rotating rod 15 is positioned at the clamping position and is in threaded connection with one side surface of the positioning reference block 7. A side surface of the positioning reference block 7 connected to the rotating rod 15 is defined as a connecting surface 16, and a threaded hole 17 is formed in the center of the connecting surface 16.

The positioning reference surfaces are arranged corresponding to different structures at the top end and the bottom end of the square joint 6 and are divided into a top reference surface 18 and a bottom reference surface 19, and two positioning reference surfaces and the connecting surface 16 are arranged in a pairwise adjacent mode, namely the rotating directions of the two positioning reference surfaces are consistent with the rotating direction of the rotating rod 15. The top end reference surface 18 is convexly provided with a round boss 21 with the shape corresponding to the shape of a round groove 20 at the top end of the square joint 6, and the bottom end reference surface 19 is concavely provided with a concave round hole 23 with the shape corresponding to the shape of a cylindrical boss 22 at the bottom end of the square joint 6. The top end of the circular boss 21 is provided with an arc chamfer 24, the outer side of the circumference of the circular boss 21 is provided with an arc groove 25, any position of the circular boss 21 is further provided with a notch 26, and the joint of the inner concave round hole 23 and the bottom reference surface 19 is provided with the arc chamfer 24.

The positioning and rotating assembly further comprises a positioning pressure plate 27 and a positioning screw 28, the top end reference surface 18 is provided with a threaded hole 17 at the central position of the circular boss 21, and the bottom end reference surface 19 is also provided with a threaded hole 17 at the central position of the concave circular hole 23.

First, the fixed platen 4 is lapped on the surfaces of the processing table 3 and the support plate 2, and is fastened to the base plate 1 by the fixing screws 5. The thrust rod 8 penetrates through a first fixing plate 10 on the machining table 3 and is in threaded connection with the first fixing plate 10, one end of the thrust rod 8 is abutted and contacted with the thrust block 9, and the thrust block 9 is driven to move towards a second fixing plate 11 through rotation of the thrust rod 8. A movable pad 12 is inserted into a slide groove on the machining table 3, and the positioning reference block 7 is placed on the movable pad 12. The rotating rod 15 penetrates through the first fixing plate 10 and the thrust block 9 and is in threaded connection with a connecting surface 16 of the positioning reference block 7.

When the top end of the square joint 6 is processed, the rotating rod 15 rotates to drive the positioning reference block 7 to rotate to the position that the bottom reference surface 19 faces upwards, the square joint 6 is placed on the positioning reference block 7 in a mode that the bottom end of the square joint is embedded with the bottom reference surface 19 of the positioning reference block 7, then the positioning pressing plate 27 is covered on the top end of the square joint 6, the positioning screws 28 sequentially penetrate through the positioning pressing plate 27, the circular through holes 29 inside the square joint 6 and the threaded holes 17 in the bottom reference surface 19 in a threaded connection mode, and the square joint 6 is guaranteed to be kept stable in the vertical direction. The thrust rod 8 rotates to push the thrust block 9 to move to abut against the movable pad 12 and the positioning reference block 7, thereby ensuring the stability of the square joint 6 in the horizontal direction. And after clamping is finished, milling the top end of the square joint 6.

After the machining of the top end of the square joint 6 is completed, the thrust rod 8 is rotated to be disengaged from the thrust block 9, and the thrust block 9 is moved in the direction of the first fixed plate 10, thereby releasing the clamping force in the horizontal direction between the movable pad 12 and the positioning reference block 7. Pulling the handle 14 thereafter pulls the movable pad 12 out of the slide groove, providing a space for the positioning reference block 7 to rotate. The rotating rod 15 is manually rotated, thereby rotating the positioning reference block 7 so that the tip reference surface 18 faces upward. The square connector 6 is placed on the positioning reference block 7 in a mode that the top end of the square connector is embedded with the top end reference surface 18 of the positioning reference block 7, then the positioning pressing plate 27 is covered at the bottom end of the square connector 6, and the positioning screws 28 are sequentially arranged in a penetrating mode and are in threaded connection with the threaded holes 17 in the top end reference surface 18 through the positioning pressing plate 27 and the circular through holes 29 in the square connector 6, so that the square connector 6 is guaranteed to be kept stable in the vertical direction. The thrust rod 9 is rotated to push the thrust block 8 to move to abut against the movable pad 12 and the positioning reference block 7, thereby ensuring the stability of the square joint 6 in the horizontal direction. And after clamping is finished, milling the bottom end of the square joint 6.

The utility model discloses when aiming at solving square joint and holing, tapping through general flat-nose pliers clamping on the milling machine, need relapse the not high problem of clamping and positioning accuracy, through setting up the location benchmark piece in order to realize quick accurate location, simple structure simultaneously, the clamping is convenient, has further improved machining efficiency.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a square joint milling fixture which characterized in that: including bottom plate, backup pad, processing platform, centre gripping subassembly and location rotating assembly, the bottom plate be provided with a pair of parallel on the surface the backup pad, the processing platform sets up the bottom plate surface is located a pair of on the position between the backup pad and through a fastener with backup pad fixed connection, the both sides of processing platform are provided with the fixed plate, the portable setting of centre gripping subassembly is in processing bench and rather than arbitrary fixed plate cooperation constitution centre gripping position with centre gripping square joint, location rotating assembly with centre gripping subassembly parallel arrangement, just location rotating assembly is including a location reference block, location reference block sets up processing bench is located the position of centre gripping position, location reference block has two adjacent and can with the square joint both ends respectively the location reference plane of gomphosis setting.

2. The square joint milling fixture of claim 1, wherein: the clamping assembly comprises a thrust rod and a thrust block, the thrust rod penetrates through the fixing plate arranged on any side of the machining table and is in threaded connection with the fixing plate, and the thrust block is abutted to and contacted with the end part of the thrust rod and is matched with the fixing plate, which is not connected with the thrust rod, of the machining table to form the clamping position.

3. A square joint milling fixture according to claim 2, wherein: the location rotating assembly is still including a rotary rod, the rotary rod wear to establish respectively through with thrust bar through connection the fixed plate with thrust piece is located to its one end centre gripping position department, the rotary rod with a side threaded connection of location reference block, location reference block with a side definition of rotary rod connection is for connecting the face, the central point department of putting of connecting the face sets up threaded hole, two location reference face with two liang of neighbours between the connection face.

4. A square joint milling fixture according to claim 3, wherein: the location reference surface divide into top reference surface and bottom reference surface, top reference surface epirelief is equipped with the circular boss that a shape and square joint top circular groove shape correspond, the top of circular boss is equipped with the circular arc chamfer, the circumference outside of circular boss is provided with the circular arc recess, the optional position department of circular boss still is equipped with a breach, the indent is equipped with the indent round hole that a shape and square joint bottom cylindricality boss shape correspond on the bottom reference surface, the indent round hole with the junction of bottom reference surface is equipped with the circular arc chamfer.

5. The square joint milling fixture of claim 4, wherein: the positioning rotating assembly also comprises a positioning pressing plate and a positioning screw, a threaded hole is formed in the position, located at the center of the circular boss, of the top end reference surface, a threaded hole is also formed in the position, located at the center of the inward concave circular hole, of the bottom end reference surface,

6. A square joint milling fixture according to any one of claims 2 to 5, wherein: the processing table is further provided with a movable cushion block at the clamping position, the bottom of the movable cushion block is provided with a pair of wedge-shaped convex tongues which are arranged in parallel, the surface of the processing table at the clamping position is provided with a pair of sliding grooves which are arranged in parallel and correspond to the shape of the wedge-shaped convex tongues, and the side surface of the movable cushion block is provided with a handle.

7. The square joint milling fixture of claim 1, wherein: the milling fixture further comprises a fixed pressing plate and a fixed screw, the fixed pressing plate is overlapped on the surfaces of the processing table and the supporting plate, and the fixed screw penetrates through the fixed pressing plate and is in threaded connection with the surface of the bottom plate so as to fix the processing table and the supporting plate on the surface of the bottom plate.