Grinding device for non-planar sheet metal stamping part

Abstract

The grinding device comprises a grinding machine, a grinding head is detachably assembled at the end of the grinding machine, an auxiliary positioning and supporting component is arranged on the grinding machine and located at the grinding head, and the auxiliary positioning and supporting component and the grinding head make contact with the surface of the stamping part at the same time. And in the state that the auxiliary positioning and supporting component is in contact with the surface of the stamping part, the coping head can move relative to the auxiliary positioning and supporting component. According to the coping device, the auxiliary positioning and supporting component makes contact with the surface of the stamping part, auxiliary supporting of the coping machine is achieved, then in the process of operating the coping machine, the operation and use stability of the coping machine is improved, the problem that a coping head deviates from a coping area due to the fact that the coping machine is manually supported in a suspended mode at present is solved, and therefore the coping operation accuracy is improved. And meanwhile, through relative movement of the coping head, the coping head can adapt to the irregular structure of the surface of the stamping part, effective coping operation is achieved, and the flexibility and applicability of coping operation are improved.

Description

Technical Field

[0001] The present application relates to the technical field of surface grinding of non-planar sheet metal stamping parts after processing, and in particular to a grinding device for non-planar sheet metal stamping parts. Background Art

[0002] There are many types of non-planar sheet metal stampings in automotive structures, each playing a vital role in the overall structure of the vehicle. For example, the inner and outer panels of the hood, which serve as body coverings, protect the engine while also providing sealing and soundproofing for the engine compartment. The roof forms the enclosed structure at the top of the vehicle, providing protection and support for the passenger compartment. The inner and outer panels of the trunk lid protect the contents of the trunk while also providing sealing and aesthetics. The A, B, and C pillars of the body frame support the roof of the vehicle, providing lateral rigidity and stability, while also offering protection in the event of a collision. The door sills, located below the doors, provide support for passengers entering and exiting the vehicle and, as part of the body structure, enhance the rigidity of the vehicle. Therefore, non-planar sheet metal stampings are widely used in automotive structures.

[0003] As the instruction manual Figure 2-3 The structure shown is a sheet metal stamping for an automotive wheel cover. After stamping, it undergoes welding of internal and external attachments, which are then further welded and drilled. After processing, to improve the surface quality of the wheel cover and attachments, welds and drilled holes are typically ground to improve surface smoothness. This prevents problems such as insufficient hole clearance during later assembly, which can affect assembly line efficiency.

[0004] At present, when performing grinding operations after processing such as welding and drilling of connecting accessories in wheel covers, operators usually use handheld grinding machines to perform grinding. However, since wheel covers and connecting accessories are non-planar stamping structures, operators need to use handheld grinding machines to grind along the irregular curves of the structural surface. During this operation, due to the unstable hand-held effect and the uneven characteristics of the structural surface, the operating stability during the grinding process is insufficient, which causes the grinding head of the grinding machine to deviate from the position to be ground in various directions ( Figure 5 As shown by the middle arrow, the grinding head is displaced and the non-grinding area is ground, which causes grinding damage to the non-grinding area and affects the normal grinding operation of the grinding area. Under the influence of the unstable artificial support, the grinding area may be ground too deeply. Summary of the Invention

[0005] In response to the above-mentioned problems, the present application aims to provide a grinding device for non-planar sheet metal stamping parts, which achieves auxiliary support for the grinder by contacting the surface of the stamping part through an auxiliary positioning support member, thereby improving the stability of its operation during the operation of the grinder, solving the current problem of manual suspension support of the grinder causing the grinding head to deviate from the grinding area, thereby improving the accuracy of the grinding operation.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is as follows: a grinding device for non-planar sheet metal stamping parts, including a handheld grinder, the end of which is detachably equipped with a grinding head of different shapes and structures, characterized in that: an auxiliary positioning support member is provided on the grinder and located at the grinding head, the auxiliary positioning support member and the grinding head are in contact with the surface of the stamping part at the same time, and when the auxiliary positioning support member is in contact with the surface of the stamping part, the grinding head can move compared to the auxiliary positioning support member.

[0007] Preferably, the auxiliary positioning support member is a support sleeve of a flexible structure, which includes a sleeve section fixed to the grinding machine and a support section covering the grinding head, and the outer end of the support section extends to the outside of the end of the grinding head.

[0008] Preferably, the middle portion of the support section is configured as a corrugated structure.

[0009] Preferably, a flange body is provided at the outer end of the support section facing outward.

[0010] The beneficial effect of the present application is that the grinding device is provided with an auxiliary positioning support member at the grinding head of the grinder, and the auxiliary positioning support member and the grinding head are in contact with the surface of the stamping part at the same time. In the state of simultaneous contact, the stamping part surface can be used to achieve auxiliary support for the grinder, thereby improving the stability of its operation during the operation of the grinder, solving the problem of the current manual suspension support of the grinder causing the grinding head to deviate from the grinding area, thereby improving the accuracy of the grinding operation.

[0011] At the same time, when the auxiliary positioning support member is in contact with the surface of the stamping part, the grinding head can move relative to the auxiliary positioning support member. That is, on the basis of the auxiliary positioning support member's auxiliary support of the grinding machine, the grinding head can adapt to the irregular structure of the stamping part surface through the relative movement of the grinding head, thereby achieving effective grinding operation and improving the flexibility and applicability of the grinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a diagram of the grinding machine structure.

[0013] Figure 2 This is a diagram of the structure of a non-planar sheet metal stamping part.

[0014] Figure 3 This is a diagram showing the internal structure of a non-planar sheet metal stamping part.

[0015] Figure 4 This is a top view diagram of the connecting accessories.

[0016] Figure 5 This is a diagram showing the deviation of the grinding head and the grinding area when the grinding head and the connecting attachment are in contact with each other for grinding.

[0017] Figure 6 This is the structural diagram of the support sleeve for this application (the left side is the front view, and the right side is the cross-sectional view).

[0018] Figure 7 The support sleeve for this application is shown in the figure assembled on the grinding machine.

[0019] Figure 8 This is a diagram showing the grinding operation in which the support sleeve of this application is in contact with the surface of the stamping part and provides auxiliary support for the grinding machine.

[0020] Figure 9 This is a diagram showing the deformation of the support section port of the support sleeve of this application along with the surface deformation of the stamping part.

[0021] Figure 10 This is a diagram showing the deformation of the side wall of the support section after the support section is squeezed out of the grinding machine in this application.

[0022] Figure 11 The corrugated structure and flange structure are provided on the support section for this application.

[0023] Figure 12 There is a diagram showing the grinding of the non-grinding area of ​​the connecting attachment by the current manual handheld grinding machine.

[0024] In the figure: 4- non-planar sheet metal stamping part; 41- connecting accessory. DETAILED DESCRIPTION

[0025] In order to enable ordinary technicians in this field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Refer to the attached Figures 1 to 11 The device for grinding non-planar sheet metal stamping parts shown in the figure includes a handheld grinding machine 1, the end of which is detachably equipped with a grinding head 2 of different shapes and structures. The grinding head 2 can usually be equipped with a cylindrical or conical head shape. In this application, since the non-planar sheet metal stamping parts are to be ground, a conical head shaped grinding head 2 is preferably used. Currently, when performing a grinding operation on a non-planar sheet metal stamping part, the operator holds the grinding machine 1 so that the grinding head 2 contacts the position to be ground. Under the high-speed rotation of the grinding head 2, the grinding operation is completed on the area to be ground.

[0027] In order to solve the problem that the current manual handheld grinding machine 1 is unstable, causing the grinding head 2 to deviate from the grinding area and the grinding depth to increase, Figure 8 As shown, an auxiliary positioning support member is provided on the grinding machine 1 and at the grinding head 2. The auxiliary positioning support member and the grinding head 2 are in contact with the surface of the stamping part at the same time. When the auxiliary positioning support member is in contact with the surface of the stamping part, the surface of the stamping part can be used to provide auxiliary support for the grinding machine 1, thereby improving the stability of its operation during the operation of the grinding machine 1, solving the problem of deviation between the grinding head 2 and the grinding area, and improving the accuracy of the grinding operation.

[0028] like Figure 10 As shown, when the auxiliary positioning support member is in contact with the surface of the stamping part, the grinding head 2 can move relative to the auxiliary positioning support member. That is, on the basis of the auxiliary positioning support member auxiliary support for the grinding machine 1, through the relative movement of the grinding head 2, the grinding head 2 can adapt to the irregular structure of the stamping part surface and realize effective grinding operation, thereby improving the flexibility and applicability of the grinding operation.

[0029] Specifically, such as Figure 6-9 As shown, the auxiliary positioning support member is a flexible support sleeve 3 (preferably a rubber sleeve with a certain body support strength), which includes a sleeve section 31 that is sleeved and fixed with the grinding machine 1, and a support section 32 that covers the grinding head 2, and the outer end of the support section 32 extends to the outside of the end of the grinding head 2. Figure 7 As shown, the support sleeve 3 is mounted on the grinding machine 1 through the mounting section 31 and is fastened to the grinding machine. Then, the grinding head 2 is inserted into the support section 32 and assembled on the end of the grinding machine 1. The assembly is completed. During the grinding operation, the outer end of the support section 32 extends to the outside of the end of the grinding head 2, thereby making the support section 32 pre-contact and press against the surface of the stamping part to be ground (such as Figure 9 As shown, the support sleeve 3 of the flexible structure can be circumferentially adhered to any position on the surface of the stamping part as it deforms in contact with the surface of the stamping part, and the adhesion force is used to achieve auxiliary support and positioning of the grinding machine 1). Since the support sleeve 3 is a flexible structure, the support section 32 is compressed by driving the grinding machine 1. After compression, the grinding head 2 can contact the grinding area on the surface of the stamping part to perform the grinding operation.

[0030] Preferably, the support sleeve 3 is made of transparent rubber, so that during the grinding operation, the grinding operation status of the grinding head 2 on the grinding area can be observed more intuitively.

[0031] like Figure 10As shown, during the grinding process, the flexible structure of the support sleeve 2 can be used to drive the grinding machine 1 to deflect in any direction under the action of auxiliary support, thereby allowing the grinding head 2 to perform adaptive grinding operations along the surface shape of the stamped part. At the same time, the grinding depth of the grinding head 2 can be adjusted by squeezing the support sleeve 2 with different forces.

[0032] like Figure 10 As shown in the dotted circle, when the grinding machine 1 is driven to deflect, the side wall of the support section 32 of the support sleeve 2 will be concave (as shown by the dotted circle) or convex accordingly. When in this state, the auxiliary support effect of the side wall of the support section 32 on the grinding machine 1 is reduced, affecting the auxiliary support effect. Therefore, in order to solve this problem, as shown in FIG. Figure 11 As shown, a corrugated structure 3a is provided at the middle portion of the support section 32. This corrugated structure 3a enables the sidewall of the support section 32 to expand and contract after being subjected to forces at different positions. This structure prevents the sidewall of the support section 32 from becoming concave or convex during expansion and contraction, thereby ensuring the strength of the sidewall of the support section 32 in providing auxiliary support to the grinding machine 1.

[0033] like Figure 10 As shown, the stability of the side wall end surface of the support section 32 after contacting the stamping surface is insufficient, so in order to improve the stability of the connection between the two, as shown in FIG. Figure 11 As shown, a flange body 33 is provided at the outer end of the support section 32 toward the outside. The flange body 33 not only extends the width of the side wall end face of the support section 32, but also achieves flat contact with the surface of the stamping part, thereby improving the stability of the support section 32 after contact with the stamping part surface, and avoiding displacement due to the deflection state of the grinding machine 1.

[0034] The principle of this application is: before performing the grinding operation of non-planar sheet metal stamping parts, the support sleeve 3 is first assembled. During assembly, the sleeve section 31 of the support sleeve 3 is sleeved on the grinding machine 1 and fastened to the grinding machine. Then, the grinding head 2 is passed through the support section 32 and assembled on the end of the grinding machine 1 to complete the assembly.

[0035] During the grinding operation, the side wall end face of the support section 32 and the flange body 33 are pre-contacted and pressed against the surface of the area to be ground of the stamping part, thereby providing auxiliary support and positioning for the grinding machine 1. The support section 32 is then compressed by driving the grinding machine 1. After compression, the grinding head 2 can contact the grinding area on the surface of the stamping part to perform the grinding operation. During the grinding process, the flexible structure of the support sleeve 2 can be used to drive the grinding machine 1 to deflect in any direction under the action of the auxiliary support, thereby enabling the grinding head 2 to perform adaptive grinding operations along the surface shape of the stamping part. At the same time, the grinding depth of the grinding head 2 can be adjusted by squeezing the support sleeve 2 with different forces. Through the transparent structure of the support sleeve 3, the grinding operation status of the grinding head 2 on the grinding area can be more intuitively observed during the grinding operation.

[0036] The above shows and describes the basic principles, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will also have various changes and improvements, which fall within the scope of this application.

Claims

1. A grinding device for non-planar sheet metal stamping parts, comprising a handheld grinding machine (1), the end of which is detachably equipped with a grinding head (2) of different shapes and structures, characterized in that: An auxiliary positioning support member is provided on the grinding machine (1) and located at the grinding head (2); the auxiliary positioning support member and the grinding head (2) are in contact with the surface of the stamping part at the same time; and when the auxiliary positioning support member is in contact with the surface of the stamping part, the grinding head (2) can move relative to the auxiliary positioning support member.

2. The grinding device according to claim 1, characterized in that: The auxiliary positioning support member is a support sleeve (3) of a flexible structure, the support sleeve (3) comprising a sleeve section (31) sleeved and fixed with the grinding machine (1), and a support section (32) covering the grinding head (2), wherein the outer end of the support section (32) extends to the outside of the end of the grinding head (2).

3. The grinding device according to claim 2, characterized in that: The upper middle portion of the support section (32) is provided with a corrugated structure (3a).

4. The grinding device according to claim 3, characterized in that: A flange body (33) is provided at the outer end of the support section (32) toward the outside.

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