Centering adjusting structure for auxiliary frame clamp

Abstract

The utility model is applicable to the field of machining fixture equipment, and provides a centering adjusting structure for an auxiliary frame fixture, which comprises a fixture bottom plate, a pull rod connecting plate is arranged on the fixture bottom plate, two workpiece positioning adjusting units are symmetrically arranged on the left side and the right side of the pull rod connecting plate, and adjusting sleeves are slidably arranged on the workpiece positioning adjusting units. The pull rod connecting plate drives the adjusting sleeves of the two workpiece positioning and adjusting units through the first pull rod and the second pull rod, synchronous movement of the two adjusting sleeves can be achieved, the two adjusting sleeves are used for driving the auxiliary frame part to be rapidly centered, other positioning elements of the clamp and the auxiliary frame part are conveniently assembled, and the assembly efficiency is improved. And meanwhile, the deformed part of the auxiliary frame component can be corrected by the adjusting sleeve in the centering process.

Description

Technical Field

[0001] The utility model is applicable to the field of machining fixture equipment and provides a centering adjustment structure for a sub-frame fixture. Background Art

[0002] When the automobile subframe is processed by machine tools and other machining equipment, it is necessary to first fix the automobile subframe on a fixture, mount the automobile subframe on the support column through the fixture, and limit the various positions of the automobile subframe through a number of positioning units on the fixture, so that the automobile subframe always maintains the same position during processing. However, since the automobile subframe may undergo local deformation during the production process such as stamping, the traditional fixture positioning units are all fixed in position, and the subframe may not be installed on the fixture in a deformed state. At the same time, the deformation will also cause the processing quality to decline in the subsequent processing process. Utility Model Content

[0003] To this end, the utility model provides a centering adjustment structure for a sub-frame clamp, which has two workpiece positioning adjustment units symmetrically arranged on the clamp bottom plate, and a movable adjustment sleeve is arranged on the workpiece fixing unit. The two adjustment sleeves are synchronously driven by a pull rod connecting plate to center and correct the deformed automobile sub-frame, so that the automobile sub-frame can be smoothly installed on the clamp.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centering adjustment structure for a subframe clamp, comprising a clamp bottom plate, and also comprising:

[0005] A tie rod connecting plate, the tie rod connecting plate is rotatably arranged on the bottom plate of the fixture, the tie rod connecting plate is rotatably connected to a first tie rod and a second tie rod, and the first tie rod and the second tie rod are respectively arranged on both sides of the rotation center of the tie rod connecting plate;

[0006] A connecting plate driving device, the connecting plate driving device is connected to the pull rod connecting plate driving device;

[0007] Two workpiece positioning and adjustment units, the two workpiece positioning and adjustment units are symmetrically arranged on both sides of the pull rod connecting plate, the workpiece positioning and adjustment units include a positioning unit base fixedly arranged on the fixture bottom plate, the positioning unit base is slidably provided with an adjustment base, the adjustment bases of the two workpiece positioning and adjustment units are respectively hinged to the first pull rod and the second pull rod, and the adjustment base is fixedly connected with an adjustment sleeve.

[0008] Furthermore, the adjusting sleeve is slidably provided with a workpiece hole positioning rod, and the adjusting base is fixedly connected with a positioning rod driving device, and the positioning rod driving device is drivingly connected to the workpiece hole positioning rod.

[0009] Furthermore, the positioning rod driving device is a cylinder, and a return spring is sleeved on the outer side of the workpiece hole positioning rod. One end of the return spring is fixedly connected to the workpiece hole positioning rod, and the other end is fixedly connected to the adjusting sleeve.

[0010] Furthermore, it also includes a connecting plate limiting assembly, including a limiting base, and the limiting base is provided with a limiting column facing the direction of the pull rod connecting plate.

[0011] Furthermore, the limiting column is threadedly connected to the limiting base, and a limiting column adjusting nut is also threadedly connected to the limiting column.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the solution of the utility model, two symmetrically arranged adjusting sleeves are synchronously driven by the first pull rod and the second pull rod, and the sub-frame component is driven by the adjusting sleeve to be quickly aligned, so that the sub-frame component is located at the center position of the clamp, which is convenient for assembling other positioning elements of the clamp with the sub-frame component. At the same time, during the alignment process, the adjusting sleeve can also correct the deformed part of the sub-frame component. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a centering adjustment structure for a sub-frame clamp mentioned in the utility model;

[0015] Figure 2 for Figure 1 A front view of a centering adjustment structure for a sub-frame clamp;

[0016] Figure 3 for Figure 1 A schematic diagram of the structure of the workpiece positioning and adjustment unit mentioned in the figure;

[0017] Figure 4 The utility model is a schematic structural diagram of a sub-frame clamp centering adjustment structure and a vehicle sub-frame after being assembled.

[0018] In the figure: 1. fixture base plate, 2. tie rod connecting plate, 3. workpiece positioning and adjusting unit, 301. positioning unit base, 302. adjusting base, 303. adjusting sleeve, 304. workpiece hole positioning rod, 305. positioning rod driving device, 4. first tie rod, 5. second tie rod, 6. connecting plate driving device, 7. connecting plate limiting assembly, 8. automobile subframe. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] For example, see the attached Figure 1 ~Attached Figure 3 The utility model provides a sub-frame clamp centering adjustment structure, including a clamp base plate 1, a tie rod connecting plate 2, a connecting plate driving device 6 and two workpiece positioning adjustment units 3. The tie rod connecting plate 2 is rotatably arranged on the clamp base plate 1, and the connecting plate driving device 6 is drivingly connected to the tie rod connecting plate 2. The connecting plate driving device 6 can be a driving mechanism such as a cylinder. The tie rod connecting plate 2 can be driven to rotate through the connecting plate driving device 6. The tie rod connecting plate 2 is rotatably connected with a first tie rod 4 and a second tie rod 5. The first tie rod 4 and the second tie rod 5 are respectively arranged at the rotation center of the tie rod connecting plate 2. On both sides, the two workpiece positioning and adjustment units 3 mentioned above are symmetrically arranged on the left and right sides of the tie rod connecting plate 2. The workpiece positioning and adjustment unit 3 includes a positioning unit base 301 fixedly arranged on the fixture bottom plate 1. The aforementioned positioning unit base 301 is slidably provided with an adjustment base 302. The adjustment bases 302 of the two workpiece positioning and adjustment units 3 are respectively hinged with the first tie rod 4 and the second tie rod 5. When the tie rod connecting plate rotates to drive the first tie rod 4 and the second tie rod 5, the first tie rod 4 and the second tie rod 5 can drive the adjustment base 302 to move synchronously toward or away from each other, and the adjustment The base 302 is fixedly connected with an adjusting sleeve 303 and a positioning rod driving device 305. The adjusting sleeve 303 is slidably provided with a workpiece hole positioning rod 304. The adjusting sleeve 303 is used to abut against the designated position of the back of the sub-frame and correct the deformation of the sub-frame during the centering process. The workpiece hole positioning rod 304 can be used to pass through the sub-frame hole from the back of the sub-frame after the frame is completed. Correction, and cooperate with the clamp limit element on the front of the sub-frame to lock the designated hole of the sub-frame. The positioning rod driving device 305 can be a linear drive device such as a cylinder The positioning rod driving device 305 is connected to the workpiece hole positioning rod 304, and the positioning rod driving device 305 is used to drive the workpiece hole positioning rod 304 to retract and retract. A reset spring is sleeved on the outer side of the workpiece hole positioning rod 304, and one end of the reset spring is fixedly connected to the workpiece hole positioning rod 304, and the other end is fixedly connected to the adjusting sleeve 303. The function of the reset spring is mainly to ensure that when the equipment stops, the workpiece hole positioning rod 304 is kept retracted into the adjusting sleeve 303, so as to protect the workpiece hole positioning rod 304 from collision and bending.

[0021] In a further solution, a connecting plate limiting assembly 7 is also provided on one side of the pull rod connecting plate 2, including a limiting base, and a limiting column is provided on the limiting base facing the pull rod connecting plate 2. The limiting column is threadedly connected to the limiting base, and a limiting column adjusting nut is also threadedly connected to the limiting column. By adjusting the locking position of the limiting column adjusting nut, the distance between the limiting column and the initial position of the pull rod connecting plate 2 can be adjusted, so that the stroke of the adjusting sleeve 303 can be adjusted more conveniently, making the equipment more flexible when used.

[0022] The working principle of this embodiment is as follows:

[0023] As attached Figure 4 As shown, firstly, the automobile subframe 8 is roughly placed at the predetermined position manually, and then the equipment is started, the tie rod connecting plate 2 rotates and drives the first tie rod 4 and the second tie rod 5 to move to both sides, and the first tie rod 4 and the second tie rod 5 drive the two adjustment bases 302 to move to both sides. During the process of the two adjustment bases 302 expanding outward, the adjustment sleeves 303 on the two adjustment bases 302 will first abut against the designated position on the back of the automobile subframe 8, and then drive the automobile subframe 8 to rotate and align, so that the automobile subframe 8 can be adjusted according to the preset The position is installed on the fixture, and in this outward expansion process, the adjusting sleeve 303 will also correct the slight deformation of the sub-frame. After the adjusting sleeve 303 drives the automobile sub-frame 8 to adjust to the specified position, the positioning rod driving device 305 drives the workpiece hole positioning rod 304 to pass through the hole on the back of the automobile sub-frame 8, and then cooperates with the fixture limiting element on the front of the automobile sub-frame 8 to lock the sub-frame hole. In this way, the centering adjustment of the automobile sub-frame 8 is completed, and the other limiting elements on the fixture can be assembled with the automobile sub-frame 8 later.

[0024] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", "head, tail" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0025] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the above technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A centering adjustment structure for a sub-frame clamp, comprising a clamp bottom plate, It is characterized in that Also includes: A tie rod connecting plate, the tie rod connecting plate is rotatably arranged on the bottom plate of the fixture, the tie rod connecting plate is rotatably connected to a first tie rod and a second tie rod, and the first tie rod and the second tie rod are respectively arranged on both sides of the rotation center of the tie rod connecting plate; A connecting plate driving device, the connecting plate driving device is connected to the pull rod connecting plate driving device; Two workpiece positioning and adjustment units, the two workpiece positioning and adjustment units are symmetrically arranged on both sides of the pull rod connecting plate, the workpiece positioning and adjustment units include a positioning unit base fixedly arranged on the fixture bottom plate, the positioning unit base is slidably provided with an adjustment base, the adjustment bases of the two workpiece positioning and adjustment units are respectively hinged to the first pull rod and the second pull rod, and the adjustment base is fixedly connected with an adjustment sleeve.

2. A sub-frame clamp centering adjustment structure according to claim 1, characterized in that: The adjusting sleeve is slidably provided with a workpiece hole position positioning rod, and the adjusting base is fixedly connected with a positioning rod driving device, and the positioning rod driving device is drivingly connected to the workpiece hole position positioning rod.

3. The sub-frame clamp centering adjustment structure according to claim 2, characterized in that: The positioning rod driving device is a cylinder, and a return spring is sleeved on the outer side of the workpiece hole positioning rod. One end of the return spring is fixedly connected to the workpiece hole positioning rod, and the other end is fixedly connected to the adjustment sleeve.

4. The sub-frame clamp centering adjustment structure according to claim 1, characterized in that: It also includes a connecting plate limiting assembly, including a limiting base, and the limiting base is provided with a limiting column facing the direction of the pull rod connecting plate.

5. The sub-frame clamp centering adjustment structure according to claim 4, characterized in that: The limiting column is threadedly connected to the limiting base, and a limiting column adjusting nut is also threadedly connected to the limiting column.

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