CN216758979U

CN216758979U - Improved device for rear frame tool

Info

Publication number: CN216758979U
Application number: CN202122431322.XU
Authority: CN
Inventors: 陈善君; 陈林华
Original assignee: Wujiang Linshan Precision Machinery Manufacturing Co ltd
Current assignee: Wujiang Linshan Precision Machinery Manufacturing Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-06-17
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a rear machine base tool improvement device which comprises a workpiece, an upper layer tool and a lower layer tool, wherein the upper layer tool is installed on the lower layer tool, a limiting mechanism is installed in the lower layer tool, the workpiece is arranged on the upper layer tool, the upper layer tool is used for clamping and positioning the workpiece, and the limiting mechanism is used for converting and limiting the position of the upper layer tool. The utility model is scientific and reasonable, simplifies the procedure of clamping the rear engine base, leads the clamping of the rear engine base to be more convenient and more accurate in positioning, the upper-layer tool can rotate, and when the machining position needs to be changed, the workpiece does not need to be dismounted and repositioned for installation, thereby reducing the times of clamping the workpiece, providing the machining precision of the workpiece, saving the time for re-clamping and improving the machining efficiency; the locking before and after the two working positions are changed is realized by utilizing the limiting mechanism, the operation is simple, the transposition is quick, and the locking is firm.

Description

Improved device for rear frame tool

Technical Field

The utility model relates to the technical field of tool fixtures, in particular to a rear base tool improvement device.

Background

Before clamping a rear machine base workpiece, a scribing ruler is required to be used for scribing and aligning, the rear machine base workpiece is placed on a machine tool after scribing is finished, a positioning position is measured on the machine tool, a spiral pressure rod and a pressing block are used for clamping, after one surface is machined, the rear machine base workpiece is detached, another surface to be machined is aligned and positioned, and then the spiral pressure rod and the pressing block are used for clamping and machining.

If the precision of a workpiece is required to be ensured in machining, accurate positioning and clamping are required, and the workpiece is prevented from being assembled and disassembled as much as possible in the machining process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an improved device for a rear engine base tool, which aims to solve the problems in the background technology.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a back frame frock improves device, includes work piece, lathe, upper frock, lower floor's frock, the work piece sets up on upper frock, upper frock is installed on lower floor's frock, install stop gear in the frock of lower floor, upper frock carries out the clamping location to the work piece, stop gear restricts the position of upper frock, and back frame frock improves device and is two-layer structure, and the lower plate is fixed, and the upper plate can rotate, and the work piece is rotatory along with the upper plate, when processing different faces, avoids installing and removing the work piece repeatedly, not only simplifies the clamping process, improves the machining precision simultaneously.

Further, the upper-layer tool comprises an upper base plate, a clamping component and a positioning component, wherein the positioning component and the clamping component are arranged on the upper base plate, the positioning component positions the workpiece, and the clamping component clamps the workpiece.

Furthermore, the positioning component comprises a positioning core rod, three bottom positioning columns and at least one sole positioning block, the three bottom positioning columns and the sole positioning blocks are all arranged on the upper base plate, the positioning core rod is arranged in the middle of the upper base plate and matched with a through hole in the middle of a workpiece, the three bottom positioning columns are in contact with the bottom surface of the workpiece, each sole positioning block is provided with a sole bolt, the sole bolts are used for positioning the workpiece, the clamping and positioning conditions of the workpiece before processing directly influence the processing quality of the workpiece, any workpiece has six degrees of freedom, each degree of freedom needs to be limited, and the processing can be carried out only after the workpiece is completely positioned;

when the outer surface of the positioning core rod is contacted with the through hole of the workpiece, the positioning core rod is superposed with the geometric central point of the through hole on the workpiece, the degrees of freedom in two moving directions are restrained, the bottom surface of the workpiece is contacted with three bottom positioning columns, the degrees of freedom in one moving direction and two rotating directions of the workpiece are restrained according to the principle that three points define a unique plane, a sole bolt on a sole positioning block is contacted with a part protruding from the sole of the workpiece, a positioning small hole is formed in the part protruding from the sole of the workpiece, the sole bolt is embedded into the positioning small hole, the degree of freedom in one rotating direction is restrained, and through the positioning mode, the six degrees of freedom in the three moving directions and the three rotating directions of the workpiece are completely restrained.

Furthermore, the positioning core rod is of a conical structure, the aperture of the workpiece is smaller than the diameter of the positioning core rod, threads are formed in the upper portion of the positioning core rod, the clamping component comprises a compression nut and a pressing block, the middle of the pressing block is provided with a unthreaded hole, the unthreaded hole is arranged on the workpiece in a pressing mode, the compression nut is matched with the threads, the compression nut is matched with the pressing block to clamp the workpiece, the diameter of a through hole in the middle of each workpiece is not completely consistent, so that the surface of the positioning core rod, which is in contact with the workpiece, is provided with a small taper, the situation that the hole is large and can not be firmly installed, the hole is small and can not be installed is avoided, the contact area between the pressing block and the workpiece is increased, meanwhile, the clamping force is dispersed, and deformation or damage of the workpiece caused by concentration of the clamping pressure is avoided.

Further, a lower bottom plate is arranged on the machine tool, a cavity is arranged on the lower bottom plate, the limiting mechanism is arranged in the cavity, a rotating shaft is arranged in the cavity, the limiting mechanism comprises a clamping cam and a spring plate, the clamping cam is connected with the upper bottom plate and is rotationally connected with the rotating shaft, the spring plate is divided into a first spring plate and a second spring plate, the first spring plate and the second spring plate are respectively installed on two sides of the cavity, the first spring plate and the second spring plate are all in contact with the clamping cam, one ends, close to each other, of the first spring plate and the second spring plate are provided with protruding short columns, the clamping cam rotates under the driving of the upper base plate, the spring plate utilizes spring force to clamp the clamping cam, the blocking edges of the lower base plate and the spring plate achieve that the two working positions of the rear base clamp are clamped fixedly, and the short columns arranged on the first spring plate and the second spring plate drive the locking end unlocking clamping cam of the spring plate.

Furthermore, the limiting mechanism also comprises a reversing rod, a pushing block and a limiting plate, wherein one end of the reversing rod is connected with the rotating shaft, the other end of the reversing rod extends out of the lower base plate, the pushing block is arranged on the reversing rod and pushes a protruding short column on the first spring plate or the second spring plate to separate the first spring plate or the second spring plate from the clamping cam, the lower base plate is provided with a limiting channel which is communicated with the cavity, the limiting plate is arranged in the limiting channel and limits the rotation of the reversing rod, the rear base fixture utilizes the limiting mechanism to change two working positions, the reversing rod is pushed, the pushing block pushes up the short column of the first spring plate, the spring unlocks the clamping cam, the upper base plate is rotated to change the processing position, the protruding edge of the clamping cam touches the flange of the lower base plate, the second spring plate springs down to abut against the protruding edge of the clamping cam, and clamping and positioning are realized.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model simplifies the procedure of clamping the rear frame, so that the clamping of the rear frame is more convenient and the positioning is more accurate; the fixture is arranged into a two-layer structure, the upper layer can rotate, when the machining position needs to be changed, the workpiece does not need to be dismounted and repositioned for installation, the workpiece clamping times are reduced, the machining precision of the workpiece is improved, the time for re-clamping is saved, and the machining efficiency is improved; the locking before and after the two working positions are changed is realized by utilizing the limiting mechanism, the operation is simple, the transposition is quick, and the locking is firm.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an overall isometric view of a rear frame tooling enhancement of the present invention;

FIG. 2 is a schematic view of the internal structure of a rear frame tooling improvement device of the present invention;

FIG. 3 is a schematic view of the internal structure of a rear frame tooling improvement device of the present invention;

FIG. 4 is a schematic view of the internal structure of a rear frame tooling improvement device of the present invention;

FIG. 5 is a schematic view of the internal structure of a rear frame tooling improvement device of the present invention;

in the figure: 1. a workpiece; 2. a compression nut; 3. briquetting; 4. positioning the core rod; 5. a bottom positioning column; 6. a sole positioning block; 7. a sole bolt; 8. an upper base plate; 9. clamping a cam; 10. a lower base plate; 111. a first spring plate; 112. a second spring plate; 12. a reversing lever; 13. a limiting plate; 14. a rotating shaft; 15. and pushing the pushing block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions:

the utility model provides a back frame frock improves device, including work piece 1, the lathe, upper frock, lower floor's frock, work piece 1 sets up on upper frock, upper frock is installed on lower floor's frock, install stop gear in the lower floor's frock, upper frock carries out the clamping location to work piece 1, stop gear restricts the position of upper frock, back frame frock improves device and is two-layer structure, lower plate 10 is fixed, upper plate 8 can rotate, work piece 1 is rotatory along with upper plate 8.

The upper-layer tool comprises an upper base plate 8, a clamping part and a positioning part, wherein the positioning part and the clamping part are arranged on the upper base plate 8, the positioning part is used for positioning the workpiece 1, the clamping part is used for clamping the workpiece 1, the positioning part comprises a positioning core rod 4, three bottom positioning columns 5 and at least one sole positioning block 6, the three bottom positioning columns 5 and the sole positioning blocks 6 are all arranged on the upper base plate 8, the positioning core rod 4 is arranged in the middle of the upper base plate 8, the positioning core rod 4 is matched with a through hole in the middle of the workpiece 1, the three bottom positioning columns 5 are in contact with the bottom surface of the workpiece 1, each sole positioning block 6 is provided with a sole bolt 7, the sole bolts 7 are used for positioning the workpiece 1, the positioning core rod 4 is of a conical structure, the aperture of the workpiece 1 is smaller than the diameter of the positioning core rod 4, the upper part of the positioning core rod 4 is provided with threads, the clamping component comprises a compression nut 2 and a pressing block 3, the middle part of the pressing block 3 is provided with a unthreaded hole, the pressing block 3 is arranged on the workpiece 1, the compression nut 2 is matched with the thread, and the compression nut 2 is matched with the pressing block 3 to clamp the workpiece 1;

the clamping and positioning conditions of the workpiece 1 before processing directly affect the processing quality of the workpiece 1, when the outer surface of the positioning core rod 4 is contacted with the through hole of the workpiece 1, the positioning core rod 4 is superposed with the geometric central point of the through hole on the workpiece 1 to restrict the freedom degrees of two moving directions, the bottom surface of the workpiece 1 is contacted with three bottom positioning columns 5, a unique plane is defined by three points to restrict the freedom degrees of one moving direction and two rotating directions of the workpiece 1, a sole bolt 7 on a sole positioning block 6 is contacted with a part protruding from the sole of the workpiece 1, a positioning small hole is arranged on the part protruding from the sole of the workpiece 1, the sole bolt 7 is embedded into the positioning small hole to restrict the freedom degree of one rotating direction, the diameter of the through hole in the middle part of each workpiece 1 is not completely consistent, so that the contact surface of the positioning core rod 4 and the workpiece 1 has small taper to prevent the hole from being large and being incapable of being firmly installed, under the condition that the holes are small and cannot be filled, the pressing block 3 increases the contact area with the workpiece 1, and simultaneously, the clamping force is dispersed, so that the workpiece 1 is prevented from being deformed or damaged due to the concentrated clamping pressure.

The lower bottom plate 10 is arranged on the machine tool, a cavity is arranged on the lower bottom plate 10, the limiting mechanism is arranged in the cavity, a rotating shaft 14 is arranged in the cavity, the limiting mechanism comprises a clamping cam 9, the spring plate, the block cam 9 is connected with the upper plate 8, the block cam 9 is connected with the rotation shaft 14 in a rotating mode, the spring plate is divided into a first spring plate 111 and a second spring plate 112, the first spring plate 111 and the second spring plate 112 are respectively installed on two sides of the cavity, the first spring plate 111 and the second spring plate 112 are both in contact with the block cam 9, one end, close to each other, of the first spring plate 111 and the second spring plate 112 is provided with a protruding short column, the block cam 9 rotates under the driving of the upper plate 8, the blocking sides of the lower plate 10 and the spring plate realize that the two working positions of the rear engine base clamp are blocked and fixed, the short columns arranged on the first spring plate 111 and the second spring plate 112 drive the locking end of the spring plate to unlock the block cam 9.

The limiting mechanism further comprises a reversing rod 12, a pushing block 15 and a limiting plate 13, one end of the reversing rod 12 is connected with the rotating shaft 14 through a shaft, the other end of the reversing rod 12 extends out of the lower base plate 10, the pushing block 15 is installed on the reversing rod 12, the pushing block 15 pushes a protruding short column on the first spring plate 111 or the second spring plate 112 to enable the first spring plate 111 or the second spring plate 112 to be separated from the clamping cam 9, a limiting channel is arranged on the lower base plate 10 and communicated with the cavity, the limiting plate 13 is installed in the limiting channel, the limiting plate 13 limits rotation of the reversing rod 12, the rear base clamp utilizes the limiting mechanism to convert two working positions, the reversing rod 12 is pushed, the pushing block 15 pushes the short column of the first spring plate 111, the spring unlocks the clamping cam 9, the upper base plate 8 is rotated to convert a processing position, the protruding edge of the clamping cam 9 touches a blocking edge of the lower base plate 10, the second spring plate 112 is pushed down to abut against the protruding edge of the engaging cam 9.

The working principle of the utility model is as follows:

firstly, positioning and clamping a workpiece 1, sleeving a positioning core rod 4 in a hole in the middle of the workpiece 1, contacting the bottom surface of the workpiece 1 with three bottom positioning columns 5 distributed on an upper bottom plate 8, adjusting a sole bolt 7 on a sole positioning block 6 to contact with a part of the workpiece 1 protruding from the sole, pressing a pressing block 3 after positioning is finished, screwing a compression nut 2 to compress the workpiece 1, and realizing clamping and positioning of the workpiece 1;

after a machine tool finishes processing one surface of a workpiece 1, the machine tool needs to rotate by 90 degrees to process the other surface, a worker shifts a reversing rod 12 to the right, the reversing rod 12 drives a pushing block 15 to swing to the right, the pushing block 15 pushes a short protruding column on a first spring plate 111, the first spring plate 111 is pushed open, the first spring plate 111 unlocks a clamping cam 9, the worker rotates an upper layer of tool to the right integrally, one protruding end of the clamping cam 9 touches a blocking edge of a lower base plate 10, a second spring plate 112 is bounced down to abut against the other protruding end of the clamping cam 9, the upper base plate 8 cannot rotate at the moment, the upper base plate 8 is firmly locked, and the other surface of the workpiece 1 is processed;

after the processing is finished, a worker dials the reversing rod 12 leftwards, the reversing rod 12 drives the pushing block 15 to swing leftwards, the pushing block 15 pushes the protruding short column on the second spring plate 112, the second spring plate 112 is pushed open, the second spring plate 112 releases locking of the clamping cam 9, the worker resets the upper layer tool integrally by rotating leftwards for 90 degrees, the first spring plate 111 is ejected to abut against the protruding other end of the clamping cam 9, the upper base plate 8 is firmly locked, the workpiece 1 is detached from the upper layer tool after resetting, and the processing of the workpiece 1 is finished.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a back frame frock improves device, includes work piece (1), lathe, its characterized in that: the workpiece (1) is arranged on the upper layer tool, the upper layer tool is installed on the lower layer tool, a limiting mechanism is installed in the lower layer tool, the upper layer tool clamps and positions the workpiece (1), and the limiting mechanism limits the position of the upper layer tool.

2. The improved device for the rear machine base tool according to claim 1, characterized in that: the upper-layer tool comprises an upper base plate (8), a clamping component and a positioning component, wherein the positioning component and the clamping component are both arranged on the upper base plate (8), the positioning component positions the workpiece (1), and the clamping component clamps the workpiece (1).

3. The improved device for the tooling of the rear engine base according to claim 2, characterized in that: the locating component comprises a locating core rod (4), three bottom locating columns (5) and at least one sole locating block (6), wherein the three bottom locating columns (5) and the sole locating blocks (6) are all installed on an upper base plate (8), the locating core rod (4) is arranged in the middle of the upper base plate (8), the locating core rod (4) is matched with a through hole in the middle of a workpiece (1), the three bottom locating columns (5) are in contact with the bottom surface of the workpiece (1), every sole bolt (7) is arranged on the sole locating block (6), and the sole bolt (7) is used for conducting position locating on the workpiece (1).

4. The improved device for the tooling of the rear engine base according to claim 3, characterized in that: the positioning core rod (4) is of a conical structure, the aperture of the workpiece (1) is smaller than the diameter of the positioning core rod (4), the upper portion of the positioning core rod (4) is provided with a thread, the clamping component comprises a compression nut (2) and a pressing block (3), the middle portion of the pressing block (3) is provided with a unthreaded hole, the pressing block (3) is arranged on the workpiece (1), the compression nut (2) is in threaded fit, and the compression nut (2) is matched with the pressing block (3) to clamp the workpiece (1).

5. The improved device for the tooling of the rear engine base according to claim 4, characterized in that: lower plate (10) are installed on the lathe, are equipped with the cavity on lower plate (10), stop gear installs in the cavity, install pivot (14) in the cavity, stop gear includes block cam (9), spring board, block cam (9) are connected with upper plate (8), and block cam (9) rotate with pivot (14) and are connected, the spring board divide into first spring board (111) and second spring board (112), first spring board (111) and second spring board (112) are installed respectively in the both sides of cavity, and first spring board (111) and second spring board (112) all contact with block cam (9), and the one end that first spring board (111) and second spring board (112) are close to each other is provided with outstanding short column.

6. The improved device for the tooling of the rear engine base according to claim 5, characterized in that: stop gear still includes reversing lever (12), top ejector pad (15), limiting plate (13), the one end and pivot (14) hub connection of reversing lever (12), and lower plate (10) are stretched out to the other end of reversing lever (12), install on reversing lever (12) top ejector pad (15), and top ejector pad (15) promote protruding short column on first spring board (111) or second spring board (112), make first spring board (111) or second spring board (112) separate with block cam (9), be equipped with spacing passageway on lower plate (10), spacing passageway and cavity intercommunication, limiting plate (13) are installed in spacing passageway, and limiting plate (13) restrict the rotation of reversing lever (12).