CN204430802U - The left and right part common fixture of automobile luggage racks - Google Patents

Abstract

The utility model relates to a common fixture for the left and right parts of the luggage rack of an automobile: it includes a main bridge plate, a horizontal fixture and a vertical fixture; the positioning block is a symmetrical structure, and the left and right sides of the positioning block are respectively provided with stations for supporting the left and right workpieces; The horizontal fixture includes a rotary cylinder and upper and lower pressing blocks, the rotating output shaft of the rotating cylinder is vertically arranged, and the upper and lower pressing blocks are installed on the rotating output shaft; when not clamped, the upper and lower pressing blocks The block is not located at the processing position. When clamping, the rotary output shaft of the rotary cylinder drives the upper and lower pressing blocks to rotate to the processing position to compress the left and right workpieces up and down; the vertical clamp includes a side pressure cylinder and a left and right pressure cylinder. clamping block, the side pressure output shaft of the side pressure cylinder is arranged horizontally, and the left and right pressing blocks are installed on the side pressure output shaft; when clamping, the side pressure output shaft of the side pressure cylinder drives the left and right The pressing blocks clamp the left and right workpieces left and right. Improve processing efficiency and reduce processing costs.

Description

Common fixture for left and right parts of car luggage rack

technical field

The utility model relates to the field of processing machinery, and is designed for the left and right luggage racks of automobiles to use the same set of clamps for simultaneous processing.

Background technique

The existing processing methods of automobile luggage racks are single-piece processing, that is, the left part and the right part are divided into two sets of fixtures, and one left part (right part) is placed on one machine tool or two sets or more are placed on a large machine tool. Multiple fixtures. The car luggage rack belongs to curved surface processing, and the processing machine tool needs four or five axes. A set of left (right) parts of the car luggage rack needs a rotating four-axis and a rotating four-axis tailstock when placed on a set of fixtures. Such a set will cost nearly 100,000 yuan. One set of car luggage rack requires two sets of rotating four-axis. The corresponding four-axis base, the main bridge plate on the fixture, the clamped main board, and the bracket all need two sets, which increases the manufacturing cost and production cost of the fixture. The circuit and air path of the fixture also need to be increased accordingly. cause cost increase.

The left part (right part) of a set of automobile luggage rack is placed on two sets of fixtures separately. When clamping, they cannot be clamped at the same time, and they need to be clamped twice. During processing, the two sets of fixtures are not the same, and the processing program cannot be processed continuously at the same time. After processing a workpiece, it is necessary to stop the machine tool, move to another set of fixtures, and re-set the tool. The pre-processing work of the first piece It needs to be repeated again when processing the second piece. In this way, the processing time is doubled, and the processing efficiency is also slowed down while the labor intensity is increased.

Contents of the invention

In view of the above problems, the purpose of this utility model is to propose a common fixture for the left and right parts of the luggage rack of an automobile, which can be adapted to clamping a set (left and right parts) at the same time, so as to improve the processing efficiency and reduce the processing cost.

For this purpose, the utility model adopts the following technical solutions:

Common fixtures for the left and right parts of the luggage rack of the car, including the main bridge plate, positioning blocks, horizontal clamps and vertical clamps;

The positioning block is a symmetrical structure, and its left and right sides are respectively provided with stations for supporting the left and right parts;

The horizontal fixture includes a rotary cylinder and upper and lower pressing blocks, the rotating output shaft of the rotating cylinder is vertically arranged, and the upper and lower pressing blocks are installed on the rotating output shaft; when not clamped, the upper and lower pressing blocks The block is not located at the processing position. When clamping, the rotating output shaft of the rotary cylinder drives the upper and lower pressing blocks to rotate to the processing position to compress the left and right parts up and down;

The vertical fixture includes a side pressure cylinder and left and right pressing blocks, the side pressure output shaft of the side pressure cylinder is arranged horizontally, and the left and right pressing blocks are installed on the side pressure output shaft; when clamping, the The side pressure output shaft of the side pressure cylinder drives the left and right pressing blocks to clamp the left and right parts.

Further, one side of the positioning block is provided with a positioning pin, and when clamping, the positioning pin fits with the positioning holes at the bottom of the left and right parts

Further, it also includes the fourth rotating shaft and the tailstock, the two ends of the main bridge plate are respectively connected with the fourth rotating shaft and the tailstock through the rotating shaft, and the bottom of the main bridge plate is provided with an escape hole.

Further, a plurality of positioning blocks, horizontal clamps and vertical clamps are arranged along a straight line along the length direction of the main bridge plate

Furthermore, the plurality of horizontal clamps and vertical clamps located on the same side of the positioning block are controlled by the same electrical system.

Furthermore, the two ends of the main bridge plate are respectively provided with reference positioning pins, and when clamping, the two reference positioning pins fit into the reference positioning holes provided at the bottom ends of the left and right parts.

Further, the positioning block is a symmetrical T-shaped structure composed of a base and an upper arm, the base is fixed on the main bridge plate, and the two sides of the upper arm and the upper end surface of the base are used to support the Work stations for left and right parts.

Further, the upper and lower pressing blocks are a symmetrical T-shaped structure composed of a base and an upper arm, the base is fixed to the rotation output shaft of the rotary cylinder, and when clamping, the bottom surface of the upper arm is in contact with the left and right parts Press tight.

The utility model has beneficial effects: the left and right parts of a set of automobile luggage racks are placed on a set of fixtures at the same time, and there is no need to install them twice, and during processing, the fixtures are installed the same, and the processing procedure can be processed continuously at the same time. After processing a workpiece, it is no longer necessary to stop the machine tool, move to another set of fixtures and re-set the tool, and the pre-processing work of the first workpiece needs to be repeated again when processing the second workpiece. In this way, compared with the prior art, the processing time is generally shortened, the labor intensity is reduced, and the processing efficiency is greatly improved.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is a partial enlarged view of part A in Fig. 1;

Fig. 3 is a schematic diagram of the structure before the left and right parts are not installed;

Fig. 4 is a partially enlarged view of part B in Fig. 3 .

Among them: 1 is the main bridge board;

200 is a horizontal fixture, 5 is a rotary cylinder, and 6 is a pressing block up and down;

300 is a vertical fixture, 7 is a side pressure cylinder, and 8 is a left and right pressing block;

4 is a positioning block, 9 is the fourth axis of rotation, 10 is a tailstock, 11 is a reference positioning pin, and 12 is a positioning pin. the

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the left and right parts of the automobile luggage rack share the fixture; including the main bridge plate 1, the horizontal fixture 200 and the vertical fixture 300;

The positioning block 4 is a symmetrical structure, and its left and right sides are respectively provided with stations for supporting the left and right parts 11;

The horizontal fixture 200 includes a rotary cylinder 5 and an upper and lower compression block 6, the rotation output shaft of the rotary cylinder 6 is vertically arranged, and the upper and lower compression blocks 6 are installed on the rotation output shaft; when not clamped, The upper and lower pressing blocks 6 are not located at the processing position. When clamping, the rotating output shaft of the rotary cylinder 5 drives the upper and lower pressing blocks 6 to rotate to the processing position to compress the left and right parts up and down;

The vertical clamp 300 includes a side pressure cylinder 7 and a left and right pressing block 8, the side pressure output shaft of the side pressure cylinder 7 is arranged horizontally, and the left and right pressing blocks 8 are installed on the side pressure output shaft; When clamping, the side pressure output shaft of the side pressure cylinder 7 drives the left and right pressing blocks 8 to clamp the left and right parts left and right.

The left and right parts of the automobile luggage rack are clamped on the overall structure of the machine tool at the same time, the positioning block 4 is located at the centerline position of the entire clamp, and the horizontal clamp 200 and the vertical clamp 300 are all located on the left and right sides of the positioning block 4 . On the left-right direction during clamping, the left end of the left workpiece is clamped by the left and right clamping blocks 8, and the right end of the left workpiece leans against the described positioning block 4; the left end of the right workpiece leans against the described positioning block 4, and the right workpiece's The right end is clamped by the left and right clamping blocks 8, and the clamping source power during clamping is provided by the side pressure cylinder 7. In the up-and-down direction during clamping, the upper ends of the left and right parts are clamped by the upper and lower clamping blocks 6, and the lower ends of the left and right parts are against the upper surface of the positioning block 4, and the clamping source power is provided by the rotating cylinder 5 during clamping. . After the clamping is completed, the tool processes the upper end faces of the left and right parts.

The left and right parts of a set of automobile luggage rack are placed on a set of fixtures at the same time, without the need for two clamping, and during processing, the fixtures are the same, and the processing program can be processed continuously at the same time. After processing a workpiece, it is no longer necessary to stop the machine tool, move to another set of fixtures and re-set the tool, and the pre-processing work of the first workpiece needs to be repeated again when processing the second workpiece. In this way, compared with the prior art, the processing time is generally shortened, the labor intensity is reduced, and the processing efficiency is greatly improved.

One side of the positioning block 4 is provided with a positioning pin 12, and during clamping, the positioning pin 12 fits with the positioning holes at the bottom of the left and right parts. When the left and right parts are clamped, they are first placed on the positioning pins 12 on their respective sides and close to the side positioning plate 4 at the same time. After the positioning is completed, the electrical system is started again to compress the left and right parts by the rotary cylinder 5 and the side pressure cylinder 7. In this way, the positioning pin 12 is used to provide a basic support for the left and right parts, so as to facilitate the clamping and fixing in the next step and improve the clamping efficiency.

It also includes the fourth rotating shaft 1 and the tailstock 2, the two ends of the main bridge plate 1 are respectively connected with the fourth rotating shaft 9 and the tailstock 10 through the rotating shaft, and the bottom of the main bridge plate 1 is provided with a space-avoiding hole. After the fourth rotating shaft 9 drives the main bridge plate 1 and its upper clamping left and right parts to rotate 180 degrees, the lower end faces of the left and right parts are processed through the avoidance hole, which avoids the secondary clamping of the left and right parts and improves It improves the processing efficiency and greatly saves manpower.

A plurality of positioning blocks 4 , horizontal clamps 200 and vertical clamps 300 are provided along a straight line along the length direction of the main bridge plate 3 . Since the left and right parts have a certain length, the setting of multiple positioning blocks 4 provides a plurality of support points for the left and right parts during clamping, which improves the stability of the clamping; in the same way, multiple horizontal clamps 200 and vertical clamps 300 The same is true for the setting; in addition, the setting of multiple horizontal clamps 200 and vertical clamps 300 is evenly distributed on one side of the left and right parts, that is, the extrusion force provided on the left and right parts is symmetrical and uniform, avoiding the left and right parts. The clamping deformation ensures the clamping accuracy.

The plurality of horizontal clamps 200 and vertical clamps 300 located on the same side of the positioning block 4 are controlled by the same electrical system. Controlled by the same set of electrical system, after placing the left and right parts on the positioning block 4, adjust the electrical system to make multiple upper and lower pressing blocks 6 and left and right pressing blocks 8 contact and clamp the left and right parts at the same time, instead of pressing a part of them. The tight block first contacts and clamps the left and right parts, and then contacts the remaining part. There is no such sequence, and it will not happen that after a part of the left and right parts are fixed, the unfixed part rotates around the fixed point. Thereby ensuring the precision of clamping.

The two ends of the main bridge plate 1 are provided with reference positioning pins 11 respectively. When clamping, the two reference positioning pins fit with the reference positioning holes provided at the bottom ends of the left and right parts, which improves the efficiency of clamping.

The positioning block 4 is a symmetrical T-shaped structure composed of a base and an upper arm, the base is fixed on the main bridge plate 1, and the two side surfaces of the upper arm and the upper end surface of the base are used to support the left and right parts. The station, such a positioning block structure is simple and easy to process, reducing the cost.

The upper and lower pressing blocks 6 are a symmetrical T-shaped structure composed of a base and an upper arm. The base is fixed to the rotation output shaft of the rotary cylinder 5. When clamping, the bottom surface of the upper arm is in contact with the left and right parts to press. . The base is a large end, and the upper arm is a small end. The rotary cylinder 5 transmits the clamping force to the left and right parts through the upper and lower pressing blocks 6. The upper and lower pressing blocks 6 of the T-shaped structure, the existing base bears the clamping Due to its large size and high strength, it is not easy to be damaged after long-term use; and the upper arm is in contact with the left and right parts. Because of its small end surface area, the force per unit area is higher than when the large end is directly used as the end surface of the left and right parts. The force is large, so that while ensuring sufficient clamping force, the power provided by the rotary cylinder 5 is saved. In addition, the smaller the end surface area of the pressing block is in contact with the left and right parts, the more favorable and guaranteed its surface quality is.

The technical principles of the present utility model have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be construed as limiting the protection scope of the utility model in any way. Based on the explanations herein, those skilled in the art can think of other specific implementations of the present utility model without creative work, and these forms will all fall within the protection scope of the present utility model.

Claims (8)

1. The common fixture for the left and right parts of the luggage rack of the automobile is characterized in that it includes a main bridge plate, a positioning block, a horizontal fixture and a vertical fixture; The positioning block is a symmetrical structure, and its left and right sides are respectively provided with stations for supporting the left and right parts; The horizontal fixture includes a rotary cylinder and upper and lower pressing blocks, the rotating output shaft of the rotating cylinder is vertically arranged, and the upper and lower pressing blocks are installed on the rotating output shaft; when not clamped, the upper and lower pressing blocks The block is not located at the processing position. When clamping, the rotating output shaft of the rotary cylinder drives the upper and lower pressing blocks to rotate to the processing position to compress the left and right parts up and down; The vertical fixture includes a side pressure cylinder and left and right pressing blocks, the side pressure output shaft of the side pressure cylinder is arranged horizontally, and the left and right pressing blocks are installed on the side pressure output shaft; when clamping, the The side pressure output shaft of the side pressure cylinder drives the left and right pressing blocks to clamp the left and right parts. 2. The common fixture for the left and right parts of the luggage rack of the automobile according to claim 1, characterized in that: one side of the positioning block is provided with a positioning pin, and when clamping, the positioning between the positioning pin and the bottom of the left and right parts Hole fit. 3. The shared fixture for the left and right parts of the luggage rack of an automobile according to claim 1, characterized in that: it also includes a fourth rotating shaft and a tailstock, and the two ends of the main bridge plate pass through the rotating shaft and the fourth rotating shaft respectively. , The tailstock is connected, and the bottom of the main bridge plate is provided with an air-avoiding hole. 4 . The shared clamp for the left and right parts of the luggage rack of an automobile according to claim 1 , wherein a plurality of positioning blocks, horizontal clamps and vertical clamps are arranged along a straight line along the length direction of the main bridge plate. 5 . The shared clamp for the left and right parts of the luggage rack of an automobile according to claim 4 , wherein the plurality of horizontal clamps and vertical clamps located on the same side of the positioning block are controlled by the same electrical system. 6 . 6. The common fixture for the left and right parts of the luggage rack of an automobile according to claim 4, characterized in that: the two ends of the main bridge plate are respectively provided with reference positioning pins, and when clamping, the two reference positioning pins are connected with the setting pins. Fit the reference positioning holes at both ends of the bottom of the left and right parts. 7. The common fixture for the left and right parts of the luggage rack of an automobile according to claim 1 or claim 5, wherein the positioning block is a symmetrical T-shaped structure composed of a base and an upper arm, and the base is fixed on the main The bridge plate, the two side surfaces of the upper arm and the upper end surface of the base form a station for supporting the left and right parts. 8. The common fixture for the left and right parts of the luggage rack of an automobile according to claim 1, characterized in that: the upper and lower pressing blocks are a symmetrical T-shaped structure composed of a base and an upper arm, and the rotation of the base and the rotating cylinder The output shaft is fixed, and when clamping, the bottom surface of the upper arm contacts and presses the left and right parts.