A kind of support workpiece deformation prevention module and tool structure

Abstract

The utility model discloses a kind of for supporting workpiece anti-deformation module and tool structure, it is related to workpiece fixture technical field, including base disc, cross rail groove is opened in base disc;Positioning hole is installed on base disc, center groove is installed in the middle of cross rail groove, and center hole is installed in center groove;Petal body, petal body is provided with multiple groups, multiple groups of petal body are synchronously installed on base disc and circumferentially equidistantly abut on the inner wall of workpiece;The contact area proportion of the inner wall of petal body and annular workpiece is not less than 80% of the inner wall of annular workpiece;Conical body, locking hole is opened in conical body;Elastic member is movably installed in center groove;Locking screw, locking screw is inserted into locking hole and is connected with center hole by screw thread, to solve the technical problem that roundness is difficult to guarantee when multiple models of workpiece are processed due to too small contact area.

Description

Technical Field

[0001] This utility model relates to the field of workpiece clamping technology, specifically to a workpiece anti-deformation block and tooling structure. Background Technology

[0002] Metal ring-shaped workpieces require grooving and drilling on their surface to meet actual product requirements. On the one hand, after the metal ring-shaped workpiece is formed, its material, such as aluminum, is prone to deformation, resulting in changes in concentricity and perpendicularity. On the other hand, grooving or drilling can easily cause thermal deformation, which can lead to non-compliance with the concentricity or perpendicularity of the workpiece, making subsequent repairs difficult.

[0003] Existing technologies include related fixtures, such as CN201020557343.5 CNC machining fixture device for easily deformable annular workpieces, which uses the same fixture installed on the annular workpiece at four stations to ensure the circumference of the annular workpiece.

[0004] First, when clamping a workpiece, existing clamps can only ensure that the curvature at the clamping position does not change. If there is insufficient contact area in the inner wall of the workpiece, the anti-deformation effect is poor, and even local deformation may still occur, resulting in the roundness not meeting the standard.

[0005] Secondly, when processing aluminum or aluminum alloy products, the generation of aluminum shavings can easily cause the fixture and workpiece to become clogged, thus preventing the fixture and workpiece from being quickly removed.

[0006] To address these issues, we provide a support block and tooling structure for preventing workpiece deformation. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a support block and tooling structure for preventing workpiece deformation, so as to solve the technical problem that the roundness of various types of workpieces is difficult to guarantee during processing due to the small contact area.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A support block for preventing workpiece deformation, wherein the petal body includes a fan-shaped block, and the fan-shaped block has a gap groove on one side opposite to the workpiece, and multiple sets of gap grooves are provided and arranged in parallel.

[0010] A connecting strip is installed at the bottom of the sector block, and the connecting strip is slidably connected in the cross track groove;

[0011] The sector-shaped block also includes a working surface one and a working surface two on both sides. Both working surface one and working surface two are curved surfaces.

[0012] A tooling structure for supporting workpieces to prevent deformation includes an annular workpiece, the end face of which is adapted to be machined with mounting grooves and mounting holes;

[0013] Also includes:

[0014] The base plate has a cross-shaped track groove; a positioning hole is installed on the base plate; a central groove is installed in the middle of the cross-shaped track groove, and a central hole is installed in the central groove.

[0015] The petal body is provided in multiple sets, and the multiple sets of petal bodies are synchronously installed on the base plate and abut against the inner wall of the workpiece at equal intervals in the circumference.

[0016] The contact area between the petal body and the inner wall of the annular workpiece accounts for no less than 80% of the inner wall area of ​​the annular workpiece;

[0017] A conical component with a locking hole inside; an elastic component is movably installed in the central groove;

[0018] The locking screw is inserted into the locking hole and threadedly connected to the center hole.

[0019] In a further technical solution, working surface one movably abuts against the annular workpiece, and working surface two movably abuts against the outside of the conical workpiece.

[0020] In a further technical solution, the angle between the side of the sector block away from the base plate and the axis of the central hole is 85° to 90°.

[0021] In a further technical solution, the bottom of the end section of the cross track groove is a dovetail notch; the bottom of the connecting strip is a dovetail strip, and the connecting strip is adapted to the cross track groove.

[0022] An arc-shaped surface is provided in the middle of the cross-shaped track groove. Multiple sets of arc-shaped surfaces are provided, and the diameter of the circular surfaces is not less than the diameter of the central groove.

[0023] In a further technical solution, the bottom of the end section of the cross track groove is T-shaped, and the connecting strip is T-shaped.

[0024] In a further technical solution, the conical component includes a conical head and a fixed cylinder, with the conical head and the fixed cylinder integrally connected; and the diameter of the conical head is larger than the diameter of the fixed cylinder.

[0025] The fixed cylinder is suitable for insertion into the elastic element in the central groove, and the elastic element is suitable for sleeve on the outside of the fixed cylinder; the elastic element and the end face of the fixed cylinder facing the central hole are in movable contact;

[0026] The conical head and the fixed cylinder are coaxial and a locking hole is provided in the middle.

[0027] In a further technical solution, the elastic element includes a bearing spring, which is installed in the central groove, with one end movably abutting against the fixed cylinder and the other end movably abutting against the inner wall of the central groove.

[0028] In a further technical solution, when the conical component is installed in the center hole by the locking screw, the end face of the conical component away from the center hole does not extend out of the end face of the petal body facing away from the base plate.

[0029] The thickness of the petal body is no greater than the thickness of the workpiece.

[0030] A further technical solution also includes a thickened gasket ring, which is installed between the base plate and the annular workpiece.

[0031] Compared with existing technologies, it has the following advantages:

[0032] The present invention uses multiple sets of petal blocks that are extruded synchronously to ensure that they move coaxially against the inner wall of the annular workpiece, thus ensuring the roundness, concentricity, and perpendicularity of the annular workpiece. Secondly, the fan-shaped plate contacts the workpiece, ensuring a larger contact area with the annular workpiece and reducing the heat impact of processing.

[0033] The dovetail-shaped cross track groove of this utility model is connected to the connecting strip, which can constrain the connecting strip from swaying around the circumference, ensuring that the degree of freedom is limited and that it can only move radially along the cross track groove, and cannot detach axially up or down, thus ensuring the support effect of the petal body on the connecting strip and ensuring that multiple petal blocks can synchronously contract inward or expand outward.

[0034] The conical compression spring is positioned by bolts, and the inclined surface compresses the petal body to make it abut against the annular workpiece. When disassembling, the spring resets and drives the conical part to quickly detach from the petal body, and the petal body quickly detaches from the annular workpiece. Due to the gap groove on the petal body, a gap is maintained in the fit, which facilitates quick unloading. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the anti-deformation block structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the tooling structure of this utility model;

[0037] Figure 3 This is a schematic diagram of the structure of the workpiece of this utility model;

[0038] Figure 4 Side view of the tooling structure of this utility model Figure 1 ;

[0039] Figure 5 for Figure 4 AA section diagram;

[0040] Figure 6 This is a schematic diagram of the structure of the base plate of this utility model. Figure 1 ;

[0041] Figure 7 This is a structural schematic diagram of the cone-shaped component of this utility model;

[0042] Figure 8 This is a schematic diagram of another petal-shaped structure of this utility model;

[0043] Figure 9 This is a top view of the tooling structure of this utility model;

[0044] Figure 10 for Figure 9 BB cross-section diagram;

[0045] Figure 11 This is a schematic diagram of the structure of the base plate of this utility model. Figure 2 ;

[0046] Figure 12 for Figure 11 Enlarged view of part C;

[0047] Figure 13 This is a side view of the petal-shaped part of this utility model;

[0048] Figure 14 Side view of the tooling structure of this utility model Figure 2 ;

[0049] Figure 15 for Figure 14 DD cross-sectional view.

[0050] In the picture:

[0051] 1. Base plate; 11. Cross-shaped track groove; 12. Positioning hole; 13. Center groove; 14. Center hole; 15. Curved surface;

[0052] 2. Petal-shaped body; 21. Fan-shaped block; 22. Gap groove; 23. Connecting strip; 24. Working surface one; 25. Working surface two;

[0053] 3. Conical component; 31. Locking hole; 32. Conical head; 33. Fixing cylinder;

[0054] 4. Elastic components; 41. Load-bearing springs;

[0055] 5. Locking screw; 6. Thickened washer ring;

[0056] 100. Ring-shaped workpiece; 101. Mounting groove; 102. Mounting hole. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0058] Example 1

[0059] Please see Figure 1 This invention provides a technical solution for supporting a workpiece to prevent deformation. The block includes a petal-shaped body 2, with multiple sets of petal-shaped bodies 2, each set including a fan-shaped block 21. Each fan-shaped block 21 has a gap groove 22 on one side opposite the workpiece 100. Multiple sets of gap grooves 22 are arranged in parallel. A connecting strip 23 is installed at the bottom of the fan-shaped block 21, connecting to a cross-shaped track groove 11. The length of the connecting strip 23 is the same as the length of the fan-shaped block cylinder, and two sets of gap grooves are provided. The fan-shaped block 21 also includes a first working surface 24 and a second working surface 25 on both sides. Both the first working surface 24 and the second working surface 25 are arc-shaped curved surfaces. The first working surface and the second working surface respectively abut against the workpiece and the subsequent central support body, achieving multiple circumferential abutments within the workpiece.

[0060] Example 2

[0061] Please see Figure 2-7 As shown, this utility model provides a technical solution for a multi-process machining fixture that ensures the roundness of annular products. The fixture includes an annular workpiece 100, the end face of which is suitable for machining mounting grooves 101 and mounting holes 102; it also includes:

[0062] like Figure 6 As shown, a base plate 1 is provided with a cross track groove 11; a positioning hole 12 is installed on the base plate 1; a central groove 13 is installed in the middle of the cross track groove 11; and a central hole 14 is installed in the central groove 13.

[0063] The petal-shaped body 2 comprises multiple sets of petal-shaped bodies 2, which are synchronously installed on the base plate 1 and circumferentially abut against the inner wall of the workpiece 100 at equal intervals. Each petal-shaped body 2 includes a fan-shaped block 21, and each fan-shaped block 21 has a gap groove 22 on one side opposite to the workpiece 100. Multiple sets of gap grooves 22 are arranged in parallel. A connecting strip 23 is installed at the bottom of the fan-shaped block 21, and the connecting strip 23 is connected to the cross-shaped track groove 11. The length of the connecting strip 23 is the same as the length of the fan-shaped block cylinder, and two sets of gap grooves are provided. The fan-shaped block 21 also includes a working surface 1 24 and a working surface 25 on both sides. The working surface 1 24 movably abuts against the annular workpiece 100, and the working surface 25 movably abuts against the outside of the conical part 3. The angle between the side of the fan-shaped block 21 away from the base plate 1 and the axis of the central hole 14 is 90°.

[0064] The contact area between the petal-shaped body and the inner wall of the annular workpiece accounts for no less than 80% of the inner wall of the annular workpiece; this circumferential distribution can ensure the contact strength at each point as much as possible, so as to achieve the supporting effect and the anti-deformation effect.

[0065] like Figure 7 As shown, a conical component 3 has a locking hole 31 inside; an elastic component 4 is movably installed in the central groove 13; the conical component 3 includes a conical head 32 and a fixed cylinder 33, the conical head 32 and the fixed cylinder 33 are integrally connected; the conical head 32 and the fixed cylinder 33 are coaxial and have a locking hole 31 in the middle, and the diameter of the conical head 32 is larger than the diameter of the fixed cylinder 33; the fixed cylinder 33 is adapted to be inserted into the elastic component 4 in the central groove 13, and the elastic component 4 is adapted to be sleeved on the outside of the fixed cylinder 33; the elastic component 4 and the end face of the fixed cylinder 33 facing the central hole 14 are movably abutted; in this embodiment, the elastic component is a bearing spring 41; the elastic component 4 includes a bearing spring 41, the bearing spring 41 is installed in the central groove 13, one end is movably abutted with the fixed cylinder 33, and the other end is movably abutted with the inner wall of the central groove 13.

[0066] Locking screw 5 is inserted into locking hole 31 and threadedly connected to center hole 14. For example... Figure 4 As shown, the length of the locking screw 5 should be greater than the length of the tapered part, and it should be able to extend to connect with the threaded connection of the center hole.

[0067] like Figure 4 and 6As shown, the end section of the cross-shaped track groove 11 is dovetail-shaped, and the bottom of the connecting strip 23 is dovetail-shaped, which is adapted to the cross-shaped track groove 11. An arc-shaped surface 15 is provided in the middle of the cross-shaped track groove 11. Multiple sets of arc-shaped surfaces 15 are provided, and the diameter of the concentric circles is not less than the diameter of the central groove 13. The dovetail groove and dovetail slider ensure restricted sliding freedom, thereby ensuring that multiple sets of petal blocks synchronously contract inward or expand outward. The dovetail-shaped cross-shaped track groove connects with the connecting strip, which can constrain the connecting strip from circumferential swaying, allowing it to move radially along the cross-shaped track groove and preventing it from detaching axially, thus ensuring the supporting effect of the petal bodies on the connecting strip. By synchronously installing multiple sets of petal bodies circumferentially, a larger contact area with the annular workpiece can be ensured, reducing the heat impact of processing and thus ensuring the roundness, concentricity, and perpendicularity of the annular workpiece.

[0068] The conical compression spring is positioned by bolts, and the inclined surface compresses the petal body to make it abut against the annular workpiece. When disassembling, the spring resets and drives the conical part to quickly detach from the petal body, and the petal body quickly detaches from the annular workpiece. Due to the gap groove on the petal body, a gap is maintained in the fit, which facilitates quick unloading.

[0069] like Figure 2 As shown, when the conical part 3 is installed in the center hole 14 by the locking screw 5, the end face of the conical part 3 away from the center hole 14 does not extend out of the end face of the petal body 2 facing away from the base plate 1; the thickness of the petal body 2 is not greater than the thickness of the workpiece 100.

[0070] The method for using multi-process machining fixtures to ensure the roundness of ring-shaped products includes the following steps:

[0071] Step 1: Position and install the base plate 1, and disassemble and connect it to the worktable by installing positioning bolts in the positioning holes 12;

[0072] Step 2: Insert the connecting strip 23 of the petal body 2 into the lateral cross track groove 11, with the outer side of the large diameter of the fan-shaped plate facing away from the center hole 14; install four sets of fan-shaped plates, corresponding to the cross track groove 11; the small diameter side plates of the four sets of fan-shaped plates abut against each other.

[0073] Step 3: Install the elastic element 4 in the central groove 13; the outer ring of the elastic element 4 is adapted to the inner diameter of the central groove 13;

[0074] Step 4: Install workpiece 100. The central axis of workpiece 100 is installed on the central hole 14, and at this time workpiece 100 is separated from petal body 2.

[0075] Step 5: Install the conical component 3, and insert the retaining cylinder 33 of the conical component 3 into the elastic component 4;

[0076] Step 6: Install the locking screw 5. The locking screw 5 is inserted into the locking hole 31 and passes through the bearing spring 41 inward. The end is threaded and locked with the center hole 14, which drives the conical part 3 to squeeze the bearing spring 41. The locking hole 31 is a stepped hole. When the locking screw 5 is completely fixed, the end is located in the locking hole 31.

[0077] The cone head 32 of the cone component 3 presses the sector block 21 outward until the sector plate abuts against the workpiece 100;

[0078] Step 7, machining the workpiece 100 includes machining the mounting groove 101 and the mounting hole 102;

[0079] Step 8: After processing workpiece 100, remove locking screw 5, and elastic element 4 squeezes cone element 3 outward; causing petal body 2 to quickly separate from workpiece 100.

[0080] Example 3

[0081] like Figure 8-13 As shown, this is another embodiment of the present invention, which is based on embodiment 2 and combined with... Figure 10 As shown, the angle between the side of the sector block 21 away from the base plate 1 and the axis of the central hole 14 is 85° to 90°. Figure 10 The angle marked in the middle is 86.22°.

[0082] like Figure 11 and 12 As shown, the bottom of the end section of the cross-shaped track groove 11 is T-shaped, as... Figure 13 As shown, the connecting strip 23 is T-shaped.

[0083] This embodiment incorporates a T-shaped connecting strip and a cross-shaped track groove, which effectively constrains the connecting strip, ensuring it can only move along the guide direction of the cross-shaped track groove. The variety of angles allows for ample contact area between the sector block and the annular workpiece; a larger contact area is beneficial for preventing deformation.

[0084] Example 4

[0085] like Figure 14 and 15 As shown, another embodiment of this utility model is presented. Based on embodiment 2, a thickening washer 6 is placed on the base plate 1, and the thickening washer 6 is installed between the base plate 1 and the annular workpiece 100. Installing the thickening washer ensures that the height of the annular workpiece is higher than the height of the sector block, such as... Figure 15 As shown. Since most existing mounting slots and holes are for robotic arms, it is necessary to ensure that the height of the sector block does not interfere with the lateral displacement of the robotic arm, so the height of the annular workpiece is increased. However, it is still necessary to ensure that the contact area between the sector block and the annular workpiece is greater than 80% of the inner wall of the annular workpiece.

[0086] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A block for supporting workpieces to prevent deformation, characterized in that, The petal body (2) includes a fan-shaped block (21), and the fan-shaped block (21) has a gap groove (22) on one side of the workpiece (100). Multiple sets of gap grooves (22) are provided and arranged in parallel. A connecting strip (23) is installed at the bottom of the sector block (21); The two sides of the sector block (21) also include working surface one (24) and working surface two (25), both of which are arc-shaped curved surfaces.

2. A tooling structure for supporting workpieces to prevent deformation, characterized in that, The device includes an annular workpiece (100), the end face of which is adapted to be machined with a mounting groove (101) and a mounting hole (102); characterized in that it further includes: The base plate (1) has a cross track groove (11) on it; a positioning hole (12) is installed on the base plate (1); a center groove (13) is installed in the middle of the cross track groove (11); and a center hole (14) is installed in the center groove (13). As described in claim 1, the anti-deformation block for supporting the workpiece has multiple sets of petal bodies (2), which are synchronously installed on the base plate (1) and circumferentially abut against the inner wall of the workpiece (100) at equal intervals; working surface one (24) movably abuts against the annular workpiece (100), and working surface two (25) movably abuts against the outside of the cone part (3); A conical component (3) has a locking hole (31) inside; an elastic component (4) is movably installed in the central groove (13); Locking screw (5) is inserted into locking hole (31) and threadedly connected to center hole (14).

3. The tooling structure for supporting workpieces against deformation according to claim 2, characterized in that, The contact area between the petal body (2) and the inner wall of the annular workpiece (100) accounts for no less than 80% of the inner wall of the annular workpiece (100).

4. The tooling structure for supporting workpieces against deformation according to claim 2, characterized in that, The angle between the side of the sector block (21) away from the base plate (1) and the axis of the central hole (14) is 85° to 90°.

5. A tooling structure for supporting workpieces against deformation according to claim 2, characterized in that, The bottom of the cross-shaped track groove (11) is a dovetail groove; the bottom of the connecting strip (23) is a dovetail strip, and the connecting strip (23) is adapted to the cross-shaped track groove (11); An arc-shaped surface (15) is provided in the middle of the cross track groove (11). Multiple sets of arc-shaped surfaces (15) are provided, and the diameter of the circular surfaces is not less than the diameter of the central groove (13).

6. The tooling structure for supporting workpieces against deformation according to claim 2, characterized in that, The bottom of the end section of the cross track groove (11) is T-shaped, and the connecting strip (23) is T-shaped.

7. A tooling structure for supporting workpieces against deformation according to claim 2, characterized in that, The conical component (3) includes a conical head (32) and a fixed cylinder (33), the conical head (32) and the fixed cylinder (33) are integrally connected; and the diameter of the conical head (32) is larger than the diameter of the fixed cylinder (33); The fixed cylinder (33) is suitable for insertion into the elastic element (4) in the central groove (13), and the elastic element (4) is suitable for being sleeved on the outside of the fixed cylinder (33); the elastic element (4) and the end face of the fixed cylinder (33) facing the central hole (14) are in movable contact; The conical head (32) and the fixed cylinder (33) are coaxial and a locking hole (31) is provided in the middle.

8. A tooling structure for supporting workpieces against deformation according to claim 7, characterized in that, The elastic element (4) includes a bearing spring (41), which is installed in the central groove (13). One end of the bearing spring (41) is in contact with the fixed cylinder (33), and the other end is in contact with the inner wall of the central groove (13).

9. A tooling structure for supporting workpieces against deformation according to claim 8, characterized in that, When the conical part (3) is installed in the center hole (14) by the locking screw (5), the end face of the conical part (3) away from the center hole (14) does not extend out of the end face of the petal body (2) facing away from the base plate (1); The thickness of the petal body (2) is not greater than the thickness of the workpiece (100).

10. A tooling structure for supporting workpieces against deformation according to claim 2, characterized in that, It also includes a thickening pad ring (6), which is installed between the base plate (1) and the annular workpiece (100).

Images