CN114473911A

CN114473911A - Auxiliary pin withdrawing clamp

Info

Publication number: CN114473911A
Application number: CN202210160588.1A
Authority: CN
Inventors: 战卫红; 袁云
Original assignee: Dongfeng Die & Stamping Technologies Co ltd
Current assignee: Dongfeng Die & Stamping Technologies Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-05-13

Abstract

The invention belongs to the technical field of clamp design, and relates to an auxiliary pin withdrawing clamp. The device has the characteristics of strong interchangeability, high reliability, convenience in processing and installation and the like, and is particularly suitable for welding, processing and positioning of thin-wall components such as a wheel cover assembly and the like. The invention also provides a wheel casing assembly jig comprising the auxiliary pin withdrawing clamp.

Description

Auxiliary pin withdrawing clamp

Technical Field

The invention belongs to the technical field of clamping tools, and particularly discloses an auxiliary pin withdrawing clamp.

Background

In the common part design of automobile manufacturing, the condition of multiple structure support of wheel casing assembly class sheet metal often welding (see fig. 1), the welding position of some supports is in narrow and small space (see fig. 2), considers that the soldering turret advances rifle welding position, and positioner during the anchor clamps design is because space structure does not allow, and after accomplishing the welding, the locating pin often can not follow the pinhole axial and withdraw from, therefore moves back the round pin in-process and can stimulate the pinhole edge, causes the part to warp.

In order to avoid the situation that parts deform due to the fact that the edges of pin holes are pulled in the pin withdrawing process, the traditional method is to separately open a clamp for processing, a pin hole axial positioning device which is consistent with the assembling direction of the parts is adopted for directly withdrawing the pins, and the separately opened clamp is installed on a movable clamp on the side of a positioning pin in consideration of cost and production efficiency.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides an auxiliary pin withdrawing clamp, which has the following specific technical scheme:

the utility model provides an auxiliary pin withdrawing clamp, includes that a plane laminating is at the lug on the support outer platform face and installs the installation pole on mounting fixture, the lug is connected perpendicularly with installation pole lower edge and is located the pinhole top of support, the installation pole is the level setting.

The auxiliary pin withdrawing clamp is arranged on the fixing clamp on the side of the pin hole, the inner space of a shell part can not be occupied almost, and the auxiliary clamp is in a static state when the positioning pin moves and cannot collide with a clamped part to be processed. And because the plane of the lug is attached to the outer platform surface of the pin hole to be withdrawn, the pin hole bracket is pressed by the lug, and the deformation of the pin hole bracket is avoided.

Preferably, the mounting rod further comprises a rotating shaft capable of locking the angle in the vertical direction, and the lug is hinged with the mounting rod through the rotating shaft.

The mode enhances the universality of the convex block, the convex block with the same design can deal with a plurality of supports fixed at different positions and different angles, the efficiency of support manufacture is improved, and the matching selection picking time in the process of installing the clamp is saved.

Preferably, the fixing clamp further comprises a plurality of horizontal mounting holes for screwing with the fixing clamp, and the horizontal mounting holes are all arranged on the mounting rod and are perpendicular to the rod shaft.

The mounting mode enables the mounting position of the clamp to be arranged more flexibly, and collision with a positioning pin or a movable clamp in the lateral movement of the positioning pin is avoided more easily.

The invention also provides a wheel casing assembly jig comprising the auxiliary pin withdrawing clamp. When the jig is used for carrying out the internal welding process of the wheel cover assembly, the deformation of the pin withdrawing pulling part can be effectively avoided.

Drawings

FIG. 1 is a perspective view of a welded inner bracket of a wheel cover assembly;

FIG. 2 is an enlarged spatial layout of the welding site of the stent;

FIG. 3 is a schematic view of the working condition of the jig after installation in the embodiment of the present invention;

the device comprises a positioning pin 1, a supporting block 2, an auxiliary pin withdrawing clamp 3, a support 4, a fixing clamp 5 and an air cylinder 6, wherein the positioning pin is fixed on the support;

3.1 bump; 3.2 installing a rod; 3.2a horizontal mounting hole; 3.3, a rotating shaft;

4.1 pin holes; 4.2 pin hole outer platform surface;

FIG. 4 is a schematic illustration of positioning in an embodiment of the invention;

FIG. 5 is a schematic view of the auxiliary pin-withdrawing fixture during pin-withdrawing in the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from this embodiment without making any creative effort, shall fall within the protection scope of the present invention.

The embodiments described below include both a wheel cover assembly fixture and an auxiliary pin ejection fixture.

It should be noted that the "fixing jig" described herein is simply "fixed" with respect to the movement state of the positioning pin 1 and is not always fixed. With reference to fig. 2-5 of the specification, the auxiliary positioning fixture 3 of the present embodiment includes a horizontally disposed rod-shaped mounting rod 3.2 and a protruding block 3.1 extending from a lower edge of the mounting rod 3.2 vertically downward, the mounting rod 3.2 is detachably mounted on a fixing fixture 5 on a side of a pin hole 4.1 to be withdrawn through a horizontal mounting hole 3.2a, the protruding block 3.1 is hinged to the mounting rod 3.2 through a rotating shaft 3.3 capable of locking an angle in a vertical direction, the protruding block 3.1 is provided with a plane in the vertical direction, and the plane is attached to an outer platform surface 4.2 of the pin hole 4.1, but does not block the pin hole 4.1.

The arrangement of all the parts after working is shown in figure 3, a fixed clamp 5 compresses the outer surface of the wheel cover assembly, a cylinder 6 drives a positioning pin 1 clamped by a support block 2 on a movable clamp to be inserted into a pin hole 4.1 of a bracket 4 to realize positioning, as shown in figure 4, the plane on a lug 3.1 of an auxiliary positioning clamp 3 is attached to a platform surface 4.2 outside the pin hole of the bracket 4, and the bracket 4 is welded on the inner wall of the wheel cover assembly.

After the welding of the support 4 is completed, the pin withdrawing process is shown in fig. 5, the air cylinder 6 drives the positioning pin 1 to withdraw from the pin hole, the position of the auxiliary positioning clamp 3 is kept fixed in the withdrawing process, the convex block 3.1 below the auxiliary positioning clamp compresses the outer platform surface 4.2 of the pin hole on the support 4, and the support 4 and the wheel cover assembly cannot be pulled and deformed due to the limiting structure.

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 invention. 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. An auxiliary pin withdrawing clamp is characterized in that: including lug (3.1) of a plane laminating on support (4) outer platform face (4.2) and install installation pole (3.2) on mounting fixture (5), lug (3.1) and installation pole (3.2) lower edge are connected perpendicularly and are located pinhole (4.1) top of support (4), installation pole (3.2) are the level setting.

2. The auxiliary pin withdrawing clamp as claimed in claim 1, further comprising a rotating shaft (3.3) capable of locking the angle in the vertical direction, wherein the lug (3.1) is hinged with the mounting rod (3.2) through the rotating shaft (3.3).

3. An auxiliary pin-withdrawing clamp as set forth in claim 2, further comprising a plurality of horizontal mounting holes (3.2a) for screw-coupling with the fixing clamp (5), the plurality of horizontal mounting holes (3.2a) each being provided on the mounting bar (3.2) and perpendicular to the bar axis.

4. A wheel casing assembly jig comprising an auxiliary pin-removing jig according to any one of claims 1 to 3.