CN215469711U

CN215469711U - Box concentric positioning fixture

Info

Publication number: CN215469711U
Application number: CN202121974429.2U
Authority: CN
Inventors: 程再明; 轩兴波; 王永顺; 李华; 王树明; 余志田
Original assignee: Tianjin Changyi Industry Co ltd
Current assignee: Tianjin Changyi Industry Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-11
Anticipated expiration: 2031-08-20

Abstract

The utility model belongs to the technical field of box processing clamping and specifically relates to a box concentric positioning anchor clamps is related to, including the bottom plate, be provided with multiunit clamping components on the bottom plate, multiunit clamping components connects in the outside of bottom plate, and its characterized in that has seted up first constant head tank and second constant head tank on the bottom plate, and first constant head tank and second constant head tank are coaxial and first constant head tank is located the second constant head tank inboard. In the process of processing the workpiece, firstly, the workpiece is normally installed, the workpiece is positioned by utilizing the first positioning groove, and the workpiece is clamped and fixed above the bottom plate by the clamping assembly for processing; subsequently, the workpiece is reversely arranged, the workpiece is positioned by the second positioning groove, the workpiece is clamped and fixed above the bottom plate by the clamping assembly, the workpiece is secondarily machined, the same workpiece is clamped by one clamp, the position of the clamp cannot be changed, parameters do not need to be corrected again, and the machined workpiece is higher in concentricity.

Description

Box concentric positioning fixture

Technical Field

The application relates to the field of box processing clamping, in particular to a box concentric positioning clamp.

Background

For most cast parts, a machine tool is required to machine some installation planes after casting, and the installation planes can meet the corresponding position requirement, size requirement and precision requirement. In the machining process, the workpiece needs to be positioned and clamped so as to ensure the stability in the machining process.

For a box with high concentricity, as shown in fig. 1, the box comprises a box 9, the box 9 is a revolving body, the middle part of the box is hollow, the upper end of the box 9 is an annular body with a smaller diameter, which is called a small end 91, and the lower end of the box 9 is an annular body with a larger diameter, which is called a large end 92. The box body 9 is cast first, and then the large end 92 and the small end 91 are machined by using a machine tool, and the coaxiality of the large end 92 and the small end 91 is high.

At present, in the process of machining the large end 92 and the small end 91, the two tools are respectively adopted to respectively positively mount and inversely mount a workpiece, and the large end 92 and the small end 91 are respectively machined. When just adorning and flip-chip to the work piece, need install two frocks respectively, at the in-process of installation, can produce some errors, consequently from the axiality of processing back main aspects 92 and tip 91 have great error.

SUMMERY OF THE UTILITY MODEL

In order to promote the machining precision of work piece both ends axiality, the purpose of this application provides a box concentric positioning anchor clamps.

The application provides a box concentric positioning anchor clamps adopts following technical scheme:

the utility model provides a box concentric positioning anchor clamps, includes the bottom plate, is provided with multiunit clamping components on the bottom plate, and multiunit clamping components connects in the outside of bottom plate, and its characterized in that has seted up first constant head tank and second constant head tank on the bottom plate, and first constant head tank and second constant head tank are coaxial and first constant head tank is located the second constant head tank inboard.

By adopting the technical scheme, in the process of processing the workpiece, the workpiece is firstly installed normally, the workpiece is positioned by utilizing the first positioning groove, and the workpiece is clamped and fixed above the bottom plate by the clamping assembly for processing; subsequently, the workpiece is reversely arranged, the workpiece is positioned by the second positioning groove, the workpiece is clamped and fixed above the bottom plate by the clamping assembly, the workpiece is secondarily machined, the same workpiece is clamped by one clamp, the position of the clamp cannot be changed, parameters do not need to be corrected again, and the machined workpiece is higher in concentricity.

Preferably, the first positioning groove is a stepped hole, and a shoulder is formed on a stepped surface of the stepped hole.

Through adopting above-mentioned technical scheme, the shoulder of taking is favorable to forming the support to the work piece, places the stability on the bottom plate when promoting the work piece and just adorning.

Preferably, a liquid discharge groove is formed in the bottom plate and communicated with the second positioning groove.

Through adopting above-mentioned technical scheme, at the in-process of processing work piece, the cutting fluid that sprays on work piece and the bottom plate can enter into the second constant head tank in, the cutting fluid in the second constant head tank can be discharged from the outside of bottom plate through the flowing back groove, keeps the cleanness in the second constant head tank, helps the clamping of next work piece.

Preferably, the clamping assembly comprises a pressing plate and a pressing plate bolt, the pressing plate is located above the bottom plate, and the pressing plate bolt penetrates through the pressing plate and then is in threaded connection with the bottom plate.

By adopting the technical scheme, when the clamping assembly is used, the pressing plate is firstly lapped above the workpiece, then the pressing plate bolt is screwed, and the pressing plate is forced to press the workpiece by utilizing the downward pressing of the pressing plate bolt, so that the workpiece is clamped above the bottom plate.

Preferably, the pressure plate is provided with an adjusting hole which is a long round hole, and the length direction of the adjusting hole is the same as that of the pressure plate.

Through adopting above-mentioned technical scheme, when the work piece is just adorning with the flip-chip, the distance between work piece upper end position and the clamp plate bolt is different, at this moment, utilizes the position that the regulation hole can move the clamp plate relative to the clamp plate bolt to guarantee that the clamp plate can stably press the top at the work piece all the time.

Preferably, one end of the pressing plate facing the outer side of the bottom plate is connected with a supporting piece, and the supporting piece is located between the pressing plate and the bottom plate and can support the pressing plate.

By adopting the technical scheme, in the process of clamping and fixing the workpiece by using the pressing plate, one end of the pressing plate far away from the workpiece is supported by using the supporting piece, the two ends of the pressing plate are respectively supported by the workpiece and the supporting piece, downward pressure is applied to the middle of the pressing plate through the pressing plate bolt, the stability of the pressing plate is stronger, and the pressing force on the workpiece is also larger.

Preferably, the supporting member is a bolt, and the supporting member vertically penetrates through the pressing plate and is in threaded connection with the pressing plate.

Through adopting above-mentioned technical scheme, adjust the length that support piece stretches out the clamp plate below according to the high of clamp plate clamping position to guarantee that the length that support piece stretches out the clamp plate is roughly the same with the height that the clamp plate presss from both sides tight work piece position, promote the stability of clamp plate in the tight frock in-process of clamp.

Preferably, the bottom plate below each pressing plate is provided with a positioning groove, and the lower end of each supporting piece can be placed in the positioning groove.

Through adopting above-mentioned technical scheme, support piece's lower extreme can the holding in the constant head tank, and the constant head tank can play certain limiting displacement to support piece, is twisting the in-process of moving the clamp plate bolt this moment, and the clamp plate bolt is difficult for driving the clamp plate and rotates.

In summary, the present application has the following technical effects:

1. the first positioning groove and the second positioning groove are formed in the bottom plate, so that the front side and the back side of a workpiece can be machined under the condition that a clamp is not replaced, and the effect of improving the machining precision of the workpiece is achieved;

2. through set up the flowing back groove on the bottom plate, reached and reduced the remaining effect of cutting fluid in the second constant head tank.

Drawings

Fig. 1 is a schematic cross-sectional view of the workpiece according to the present embodiment.

Fig. 2 is a schematic three-dimensional structure diagram of the positioning jig in the present embodiment.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Description of reference numerals: 1. a base plate; 11. a liquid discharge tank; 12. positioning a groove; 2. a clamping assembly; 21. pressing a plate; 211. an adjustment hole; 22. a platen bolt; 23. a support member; 3. a first positioning groove; 4. a second positioning groove; 5. positioning holes; 51. positioning pins; 9. a box body; 91. a small end; 92. a large end; 93. and (7) installing holes.

Detailed Description

As shown in fig. 2, the present embodiment describes a box body concentric positioning fixture, which includes a bottom plate 1 and a plurality of sets of clamping assemblies 2, wherein a first positioning groove 3 and a second positioning groove 4 are formed in the bottom plate 1, the first positioning groove 3 and the second positioning groove 4 are coaxially disposed, and the first positioning groove 3 is located inside the second positioning groove 4. It is shown in fig. 1 to combine again, little end 91 on the box 9 and the location fit of pegging graft of first constant head tank 3, and the location fit of pegging graft of big end 92 on the box 9 and second constant head tank 4 can be accomplished on the bottom plate 1 and just adorn and the flip-chip of box 9 this moment, at the process of processing, need not to change anchor clamps, and the position of anchor clamps can not produce the change, need not to rectify the processing parameter again, and consequently the axiality precision of the big end 92 and the little end 91 of processing is higher.

As shown in fig. 2, the first positioning groove 3 is a through hole, the cutting fluid entering the first positioning groove 3 can be directly discharged, the bottom plate 1 is also provided with a fluid discharge groove 11, one end of the fluid discharge groove 11 is communicated with the second positioning groove 4, the other end of the fluid discharge groove is positioned on the outer peripheral surface of the bottom plate 1 and is opened, the cutting fluid entering the second positioning groove 4 can be discharged from the fluid discharge groove 11, and the cutting fluid is prevented from remaining in the first positioning groove 3 and the second positioning groove 4.

As shown in fig. 2, the first positioning groove 3 is preferably a stepped hole, and the end of the small end 91 is also provided in a stepped shape, so that after the first positioning groove 3 is engaged with the small end 91, the small end 91 can be supported by the stepped surface of the first positioning groove 3, thereby improving the stability of the workpiece placed on the bottom plate 1 during normal installation.

As shown in fig. 1, a mounting hole 93 is formed in an end surface of the large end 92, and the mounting holes 93 are uniformly arranged in a circumferential manner. Referring to fig. 2, a plurality of positioning holes 5 are formed in the bottom plate 1, the positioning holes 5 are located between the first positioning groove 3 and the second positioning groove 4, the plurality of positioning holes 5 are circumferentially and uniformly arranged relative to the center of the first positioning groove 3, and the positioning holes 5 correspond to the mounting holes 93. A positioning pin 51 is inserted and fitted into each positioning hole 5, the positioning pin 51 is screwed to the base plate 1 by a bolt, and the positioning pin 51 protrudes from the base plate 1. When the work piece flip-chip, the cooperation of pegging graft of main aspects 92 and second constant head tank 4, locating pin 51 inserts in the mounting hole 93 simultaneously, and the location of flip-chip this moment is more accurate, can promote the axiality of main aspects 92 and tip 91.

A plurality of clamping unit 2 evenly arrange in the outside of second constant head tank 4, as shown in fig. 3, clamping unit 2 includes clamp plate 21, clamp plate bolt 22 and support piece 23, the last regulation hole 211 of having seted up of clamp plate 21, regulation hole 211 is the slotted hole, the length direction of regulation hole 211 is the same with the length direction of clamp plate 21, clamp plate 21 is located the top of bottom plate 1, clamp plate bolt 22 passes behind the regulation hole 211 with bottom plate 1 threaded connection, support piece 23 connects the one end of keeping away from the work piece at clamp plate 21, connect the outer end at clamp plate 21 promptly. In the process of clamping the workpiece by using the clamping assembly 2, firstly, the pressure plate 21 is placed above a position of the workpiece to be clamped, the support 23 is supported above the base plate 1, namely, one end of the pressure plate 21 is pressed above the workpiece, and the other end is supported above the base plate 1 through the support 23, and then the pressure plate bolt 22 is screwed, so that the pressure plate 21 can be pressed by using the pressure plate bolt 22, and the clamping and fixing of the workpiece are completed.

As shown in fig. 3, since the pressing position and the height of the pressing plate 21 are different when the box 9 is mounted and flipped, the position of the pressing plate bolt 22 in the adjusting hole 211 can be adjusted for different pressing positions to adjust the length of the pressing plate 21 inside the pressing plate bolt 22. Meanwhile, the supporting pieces 23 are preferably arranged as bolts, the supporting pieces 23 vertically penetrate through the pressure plate 21 and are in threaded connection with the pressure plate 21, and the length of the supporting pieces 23 extending out of the lower part of the pressure plate 21 is adjusted according to the height of the clamping position of the pressure plate 21, so that the length of the supporting pieces extending out of the pressure plate 21 is approximately the same as the height of the pressure plate 21 clamping the workpiece, and the stability of the pressure plate 21 in the process of clamping the tool is improved.

As shown in fig. 3, a positioning groove 12 is formed on the bottom plate 1 below each pressing plate 21, and the lower end of the supporting member 23 can be placed in the positioning groove 12. The lower end of the supporting piece 23 can be accommodated in the positioning groove 12, the positioning groove 12 can limit the supporting piece 23 to a certain extent, and at the moment, in the process of screwing the pressing plate bolt 22, the pressing plate bolt 22 is not easy to drive the pressing plate 21 to rotate.

The using process of the embodiment is as follows:

firstly, inserting the small end 91 of a workpiece into the first positioning groove 3, clamping and fixing the box body 9 by using the clamping assembly 2, and processing the large end 92 of the workpiece; then, the large end 92 of the workpiece is inserted into the second positioning groove 4, the positioning pin 51 is inserted into the mounting hole 93, the clamping assembly 2 is used for clamping the box body 9, the small end 91 of the workpiece is machined, and the coaxiality of the small end 91 and the large end 92 is guaranteed.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a box concentric positioning anchor clamps, includes bottom plate (1), is provided with multiunit clamping component (2) on bottom plate (1), and the outside at bottom plate (1) is connected in multiunit clamping component (2), its characterized in that has seted up first constant head tank (3) and second constant head tank (4) on bottom plate (1), and first constant head tank (3) and second constant head tank (4) are coaxial and first constant head tank (3) are located second constant head tank (4) inboardly.

2. The tank body concentric positioning jig according to claim 1, wherein the first positioning groove (3) is a stepped hole, and a step surface of the stepped hole is upwardly formed with a shoulder (31).

3. The box body concentric positioning clamp according to claim 1, characterized in that a liquid discharge groove (11) is formed on the bottom plate (1), and the liquid discharge groove (11) is communicated with the second positioning groove (4).

4. The box concentric positioning clamp according to any one of claims 1 to 3, characterized in that the clamping assembly (2) comprises a pressing plate (21) and a pressing plate bolt (22), the pressing plate is located above the bottom plate (1), and the pressing plate bolt (22) penetrates through the pressing plate (21) and then is in threaded connection with the bottom plate (1).

5. The box concentric positioning fixture according to claim 4, characterized in that the pressure plate (21) is provided with an adjusting hole (211), the adjusting hole (211) is an oblong hole, and the length direction of the adjusting hole (211) is the same as the length direction of the pressure plate (21).

6. The box body concentric positioning clamp according to claim 5, characterized in that one end of the pressure plate (21) facing the outer side of the bottom plate (1) is connected with a support (23), and the support (23) is located between the pressure plate (21) and the bottom plate (1) and can support the pressure plate (21).

7. The box concentric positioning clamp of claim 6, characterized in that the support (23) is a bolt, the support (23) vertically penetrates the pressure plate (21) and is connected with the pressure plate (21) in a threaded manner.

8. The box body concentric positioning clamp according to claim 7, characterized in that a positioning groove (12) is formed on the bottom plate (1) below each pressing plate (21), and the lower end of the supporting piece (23) can be placed in the positioning groove (12).