CN113351908A

CN113351908A - Quick accurate centering clamping device of undersetting

Info

Publication number: CN113351908A
Application number: CN202110625114.5A
Authority: CN
Inventors: 雷启洪; 魏大强; 吴高军; 李龙
Original assignee: Gucheng Shihua Weifu Machinery Co ltd
Current assignee: Gucheng Shihua Weifu Machinery Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-09-07
Anticipated expiration: 2041-06-04
Also published as: CN113351908B

Abstract

The invention relates to the technical field of positioning fixtures, in particular to a quick and accurate centering and clamping device for a lower support, which comprises a base and an I-shaped pressing plate, wherein a guide rail is arranged above the base, a supporting plate is arranged above the middle part of the guide rail, centering blocks and a driving device are arranged at two ends of the guide rail, each centering block is of an isosceles trapezoid structure, the symmetrical center line of each centering block and the symmetrical center line of the guide rail are positioned in the same vertical plane, die holes are formed in two ends of the pressing plate, a connecting seat is arranged in the middle of the pressing plate, and each connecting seat is provided with an upright post. The position of the lower support is determined through the upright posts, and then the centering blocks move towards the inside of the U-shaped clamping grooves from two sides of the lower support, so that the lower support is accurately and quickly centered. The invention improves the working efficiency, can quickly position the lower support, and has higher concentricity between the center of the quadrangle where the axes of the processed 4 connecting holes are positioned and the center of the bottom plane of the U-shaped clamping groove and higher verticality with the bottom plane.

Description

Quick accurate centering clamping device of undersetting

Technical Field

The invention relates to the technical field of positioning fixtures, in particular to a quick and accurate centering and clamping device for a lower support.

Background

At present, leaf spring among the automotive suspension realizes being connected with the axle housing through upper bracket and undersetting, and the upper bracket is used for being connected leaf spring and axle housing, and the undersetting corresponds the setting with the upper bracket, is used for fixing or strengthening the upper bracket and is connected with the axle housing.

Among the prior art, the undersetting includes U type draw-in groove and linking arm, and wherein U type draw-in groove design has 4 connecting holes, and the bolt passes the connecting hole and cooperates with the upper bracket to realize that upper and lower support and axle housing are connected fixedly. Therefore, in the process of machining the 4 connecting holes of the lower support, the machining precision of the connecting holes must be strictly controlled, namely, the central line of a quadrilateral plane (a perpendicular line passing through the center of the quadrilateral plane) formed by taking the axis of the connecting holes as a vertex is required to be concentric with the central line of the bottom plane of the U-shaped clamping groove, and the axis of the connecting holes is required to have higher perpendicularity with the bottom plane.

Disclosure of Invention

The invention aims to provide a quick and accurate centering and clamping device for a lower support, which is reasonable in design, improves the working efficiency, can quickly position the lower support, enables the center of the bottom plane of a U-shaped clamping groove of the lower support and the center of a quadrangle where the axes of 4 connecting holes are machined to have higher concentricity, and can ensure that the axes of the connecting holes and the bottom plane have higher perpendicularity.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a quick accurate centering clamping device of undersetting, includes base and "worker" style of calligraphy clamp plate that the level set up, the base top is provided with the guide rail, guide rail middle part top is provided with the extension board that can contact with the U type draw-in groove bottom of undersetting, the guide rail both ends are provided with centering piece and drive centering piece is followed the gliding drive arrangement of guide rail, centering piece is isosceles trapezoid structure, the center of symmetry line of centering piece with guide rail center of symmetry line is located same vertical plane, the guide rail both sides are provided with and are used for fixing the location axle of clamp plate, the clamp plate both ends are provided with the nib, the clamp plate middle part is provided with the connecting seat, the connecting seat be provided with can with the inboard inconsistent stand of one of them linking arm of undersetting.

Further, the upper surface of the centering block is lower than the upper surface of the support plate.

Furthermore, the bottom of the centering block is provided with a groove matched with the guide rail.

Further, the driving device comprises a screw rod and a support, and the screw rod penetrates through the support to be connected with the centering block.

Furthermore, the mould also comprises 2-3 pins matched with the mould holes, and the pins are connected with the mould holes in an insertion mode.

Furthermore, the upper surface of the support plate is a smooth plane, the length direction of the support plate is consistent with the direction of the guide rail, and the length of the support plate is smaller than that of the U-shaped clamping groove.

Further, a fastening nut is arranged at the end part of the positioning shaft.

Further, the upright posts are horizontally arranged.

The invention has the beneficial effects that: the utility model provides a quick accurate centering clamping device of undersetting, includes base and "worker" style of calligraphy clamp plate that the level set up, the base top is provided with the guide rail, guide rail middle part top is provided with the extension board that can contact with the U type draw-in groove bottom of undersetting, the guide rail both ends are provided with centering piece and drive centering piece is followed the gliding drive arrangement of guide rail, centering piece is isosceles trapezoid structure, the center of symmetry line of centering piece with guide rail center of symmetry line is located same vertical plane, the guide rail both sides are provided with and are used for fixing the location axle of clamp plate, the clamp plate both ends are provided with the nib, the clamp plate middle part is provided with the connecting seat, the connecting seat be provided with can with the inboard inconsistent stand of one of them linking arm of undersetting. The position of the lower support is determined through the upright posts, and then the centering blocks move towards the inside of the U-shaped clamping grooves from two sides of the lower support, so that the lower support is accurately and quickly centered. The invention improves the working efficiency, can quickly position the lower support, and has higher concentricity between the center of the quadrangle where the axes of the processed 4 connecting holes are positioned and the center of the bottom plane of the U-shaped clamping groove and higher verticality with the bottom plane.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a side view of fig. 2.

Fig. 5 is a schematic view of the structure of the lower support.

Description of reference numerals:

1-base 2-pressing plate

21-die hole 22-connecting seat

23-upright post 3-guide rail

4-lower support 41-U-shaped clamping groove

42-connecting arm 5-support plate

6-centering block 7-driving device

71-screw 72-support

8-positioning shaft 9-pin.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the scope of the invention.

As shown in fig. 1 to 5, the quick and accurate centering and clamping device for the lower support in this embodiment includes a base 1 and an i-shaped pressing plate 2, which are horizontally disposed, a guide rail 3 is disposed above the base 1, a support plate 5, which can contact with the bottom of a U-shaped slot 41 of the lower support 4, is disposed above the middle portion of the guide rail 3, centering blocks 6 and a driving device 7, which drives the centering blocks 6 to slide along the guide rail 3, are disposed at two ends of the guide rail 3, the centering blocks 6 are in an isosceles trapezoid structure, a groove 61, which is matched with the guide rail 3, is disposed at the bottom of the centering blocks 6, a symmetric center line of the centering blocks 6 and a symmetric center line of the guide rail 3 are located in the same vertical plane, positioning shafts 8 for fixing the pressing plate 2 are disposed at two sides of the guide rail 3, fastening nuts are disposed at end portions of the positioning shafts 8, die holes 21 are disposed at, the middle part of the pressure plate 2 is provided with a connecting seat 22, the connecting seat 22 is provided with a vertical column 23 which can be abutted against the inner side of one connecting arm 42 of the lower support 4, and the vertical column 23 is horizontally arranged.

When the device is used, the bottom of a U-shaped clamping groove 41 of a lower support 4 is arranged above a support plate 5, the bottom is contacted with the upper surface of the support plate 5, the length direction of the U-shaped clamping groove 41 is consistent with the direction of a guide rail, a pressing plate 2 is sleeved on a positioning shaft 8, then the pressing plate 2 is positioned between two connecting arms 42, the lower support 4 is moved along the direction of the guide rail 3, an upright column 23 is enabled to be abutted against one of the connecting arms of the lower support 4, and the position of the lower support along the left and right direction is determined firstly through the upright column 23; then drive arrangement 7 drives centering block 6 at both ends respectively and removes to U type draw-in groove 41, because centering block 6 is isosceles trapezoid structure, and the symmetrical center line of centering block 6 is located same vertical plane with the symmetrical center line of guide rail 3, consequently centering block 6 can be fixed a position the undersetting along the fore-and-aft direction after the card is gone into in U type draw-in groove 41, thereby realize the accurate quick centering of undersetting, at last through the fastening nut of screwing the location axle head portion, fix the undersetting, the drill bit is processed through the undersetting 4 connecting hole of mould aperture to clamp plate 2 below at last. The bottom surface of the U-shaped clamping groove of the lower support after centering and fixing is concentric with a quadrangle formed by the 4 die holes 21. By adopting the precise centering and clamping device for the lower support, an operator can complete accurate centering within 3-6 seconds, so that the centering time is greatly saved, and the working efficiency is improved.

The upper surface of the centering block 6 is lower than the upper surface of the support plate 5, so that the centering block 6 can be clamped into the U-shaped clamping groove 41 conveniently, and the lower support 4 can be centered and fixed.

The bottom of the centering block 6 is provided with a groove 61 matched with the guide rail 3, so that the matching precision of the guide rail 3 of the centering block 6 is improved, and the centering precision is improved.

The driving device 7 comprises a screw rod 71 and a support 72, the screw rod 71 penetrates through the support 72 to be connected with the centering block 6, the screw rod 71 is in threaded connection with the support 72, and the centering block 6 is driven to reciprocate along the guide rail 3 by rotating the screw rod 71.

The drilling tool further comprises 2-3 pins 9 matched with the die holes 21, the pins 9 are connected with the die holes 21 in an insertion mode, and after a connecting hole is drilled, the pins 9 are inserted into the connecting hole, so that the machining precision of 4 connecting holes is improved.

The bottom surface of the processed U-shaped clamping groove is taken as a reference, the upper surface of the support plate 5 is a smooth plane, the length direction of the support plate 5 is consistent with the direction of the guide rail 3, positioning accuracy is improved conveniently, the length of the support plate 5 is smaller than that of the U-shaped clamping groove 41, the centering block 6 is conveniently inserted into the U-shaped clamping groove 41, and positioning of the lower support in the front-back direction is achieved.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a quick accurate centering clamping device of undersetting which characterized in that: base (1) and "worker" style of calligraphy clamp plate (2) including the level setting, base (1) top is provided with guide rail (3), guide rail (3) middle part top is provided with extension board (5) that can contact bottom U type draw-in groove (41) of undersetting (4), guide rail (3) both ends are provided with centering piece (6) and drive centering piece (6) are followed gliding drive arrangement (7) of guide rail (3), centering piece (6) are isosceles trapezoid structure, the center line of symmetry of centering piece (6) with guide rail (3) center line of symmetry is located same vertical plane, guide rail (3) both sides are provided with and are used for fixing location axle (8) of clamp plate (2), clamp plate (2) both ends are provided with nib (21), clamp plate (2) middle part is provided with connecting seat (22), connecting seat (22) be provided with can with the inboard looks of one of them linking arm (42) of undersetting (4) A butted upright post (23).

2. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: the upper surface of the centering block (6) is lower than the upper surface of the support plate (5).

3. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: the bottom of the centering block (6) is provided with a groove (61) matched with the guide rail (3).

4. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: the driving device (7) comprises a screw rod (71) and a support (72), and the screw rod (71) penetrates through the support (72) to be connected with the centering block (6).

5. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: the mould also comprises 2-3 pins (9) matched with the mould holes (21), and the pins (9) are connected with the mould holes (21) in an inserting manner.

6. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: the upper surface of the support plate (5) is a smooth plane, the length direction of the support plate (5) is consistent with the direction of the guide rail (3), and the length of the support plate (5) is smaller than that of the U-shaped clamping groove (41).

7. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: and a fastening nut is arranged at the end part of the positioning shaft (8).

8. A sub-mount rapid accurate centering clamping device as claimed in claim 1, wherein: the upright post (23) is horizontally arranged.