Aluminum part milling positioning fixture and method of use

Abstract

The application discloses an aluminum part milling positioning clamp and a use method, which comprises the following steps: an upper mounting plate is arranged; an operating opening is formed in the upper mounting plate; a workpiece is arranged on the operating opening; two groups of annular guide rails are arranged on the bottom end face of the upper mounting plate; a fixing rod is arranged between the annular guide rail and the upper mounting plate; a plurality of driving mechanisms are arranged on the two groups of annular guide rails; the driving mechanism is provided with a fixing assembly; a plurality of limiting plates are arranged on the plurality of fixing assemblies respectively; the limiting plate is in contact with the inner hole wall of the workpiece; the application has the beneficial effects that: the driving mechanism drives the limiting plate to move, and the workpiece is limited when the plurality of limiting plates are in contact with the inner hole of the workpiece; since each group of limiting plates moves independently, each group of limiting plates can be in contact with the inner hole wall of the workpiece for limiting, so that the workpiece can be stabilized in the milling processing area during processing.

Description

TECHNICAL FIELD

[0001] The application relates to an aluminum part milling positioning clamp and a use method. BACKGROUND

[0002] When an aluminum part is processed in a machining center, the aluminum part needs to be disassembled and assembled one by one, and improper operation during manual clamping can cause damage to the processed surface.

[0003] In the prior art, for example, a Chinese patent with the publication number CN210757288U discloses an inner hole automatic expansion clamp, which comprises a driving cylinder, a pull rod, an expansion sleeve, an inner layer expansion body, an outer layer expansion body and a pad. The pull rod is arranged in the inner part of the expansion sleeve and the central axes coincide. The bottom end of the pull rod is connected with the output shaft of the driving cylinder. The outer layer expansion body and the inner layer expansion body are sequentially arranged between the expansion sleeve and the pull rod. The top end of the outer layer expansion body is clamped with the top end of the expansion sleeve. The top end of the pull rod is pressed against the top end of the inner layer expansion body through the pad. The edge line of the longitudinal section of the connecting surface between the outer layer expansion body and the inner layer expansion body is in a wavy shape. A plurality of expansion grooves are formed in the expansion sleeve. The utility model adopts the driving cylinder to drag the pull rod. The pull rod pushes the inner layer expansion body to move downward through the pad. The inner layer expansion body pushes the outer layer expansion body to move outward by moving downward. The longitudinal movement is changed into the radial movement, so that the expansion sleeve is deformed, and the high-precision expansion of the aluminum part to be processed is realized.

[0004] However, when the above-mentioned scheme is used in the milling process of the aluminum part, the irregular inner hole of the aluminum part is clamped, and looseness is prone to occur, which affects the efficiency and quality of the processing. In view of this, the application provides an aluminum part milling positioning clamp and a use method to solve the above-mentioned problems. SUMMARY

[0005] The application aims to provide an aluminum part milling positioning clamp and a use method to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme:

[0007] An aluminum part milling positioning clamp comprises:

[0008] an upper mounting plate, which is provided with a workpiece in an operation opening;

[0009] two groups of annular guide rails arranged on the bottom end surface of the upper mounting plate, and a fixing rod arranged between the annular guide rail and the upper mounting plate;

[0010] a plurality of driving mechanisms arranged on the two groups of annular guide rails, and a fixing assembly arranged on the driving mechanism;

[0011] A plurality of sets of limiting plates are respectively arranged on the plurality of sets of fixing assemblies; the limiting plates are in contact with the inner hole wall of the workpiece;

[0012] Each set of the driving mechanism rotates along the axis of the annular guide rail;

[0013] The two sets of annular guide rails and the upper mounting plate are coaxially arranged.

[0014] As an improvement of the above technical solution, the driving mechanism comprises a mounting frame, two sets of sliding sleeves are arranged on the mounting frame, the two sets of sliding sleeves are respectively connected to the two sets of annular guide rails in a sliding manner, an electric cylinder is arranged on the mounting frame, and the fixing assembly is arranged on the electric cylinder.

[0015] As an improvement of the above technical solution, a positioning bolt is arranged on the mounting frame, the positioning bolt is in contact with the surfaces of the mounting frame, the sliding sleeve and the annular guide rail, and the positioning bolt is threadedly connected with the mounting frame.

[0016] As an improvement of the above technical solution, the fixing assembly comprises a mounting sleeve, the mounting sleeve is arranged on the electric cylinder, a screw rod is arranged on the mounting sleeve, the limiting plate is sleeved on the outer wall of the screw rod, and a fixing nut is threadedly sleeved on the outer wall of the screw rod.

[0017] As an improvement of the above technical solution, the limiting plate is provided with a first arc-shaped part and a second arc-shaped part, the cross-sectional diameter of the first arc-shaped part is smaller than that of the second arc-shaped part.

[0018] As an improvement of the above technical solution, a lower mounting plate is arranged below the upper mounting plate, a support plate is arranged between the upper mounting plate and the lower mounting plate, and a positioning hole is arranged on the lower mounting plate.

[0019] As an improvement of the above technical solution, a movable opening is arranged on the support plate, and the movable opening is arranged at the position of the annular guide rail.

[0020] As an improvement of the above technical solution, a ring-shaped protective pad is arranged on the surface of the upper mounting plate, the inner hole diameter of the ring-shaped protective pad is smaller than the diameter of the operating opening, and the upper mounting plate is provided with a leveling part.

[0021] As an improvement of the above technical solution, guide lines are engraved on the ring-shaped protective pad, and the ratio between the shape of the guide lines and the cross-sectional shape of the inner hole of the workpiece is 2:1.

[0022] A use method of an aluminum part milling positioning clamp, comprising the following steps:

[0023] S1, protection installation:

[0024] Place the annular protective pad on the upper mounting plate, and make the annular protective pad coaxial with the upper mounting plate, and draw a guide line on the annular protective pad, and make the guide line similar to the inner hole of the workpiece;

[0025] S2, limit adjustment:

[0026] Place the workpiece on the annular protective pad, and align the inner hole of the workpiece with the guide line when placing, and adjust the limiting plate so that the first arc-shaped part or the second arc-shaped part is arranged towards the inner hole wall closest to the workpiece, and fix the limiting plate through the fixing assembly;

[0027] S3, trajectory recording:

[0028] The driving mechanism drives the limiting plate to move, and the first arc-shaped part or the second arc-shaped part of the limiting plate contacts the inner hole wall of the workpiece, and then each group of driving mechanisms records the moving distance of the current limiting plate, so that the moving distance of each limiting plate is equal each time;

[0029] S4, driving adjustment:

[0030] In S3, trajectory recording, if the limiting plate contacts the inner hole wall of the workpiece when the workpiece is not stable, adjust the position of the driving mechanism on the annular guide rail, and repeat S2, limit adjustment, S3, trajectory recording, until the multiple limiting plates contact the inner hole of the workpiece, and the workpiece is stable on the annular protective pad;

[0031] S5, positioning and installation:

[0032] Place the lower mounting plate on the workbench surface, and place the workpiece in the milling processing area through the leveling part;

[0033] S6, workpiece processing:

[0034] Place the workpiece of the same specification on the annular protective pad, and align the inner hole of the workpiece with the guide line when placing, and the multiple limiting plates contact the inner hole wall of the workpiece under the driving of the driving mechanism, and limit the workpiece, and after processing is completed, the workpiece is taken down, and the step is repeated to process multiple workpieces of the same specification.

[0035] Compared with the prior art, the beneficial effects of the present application are: when limiting the workpiece, the workpiece is placed on the upper mounting plate, and the limiting plate is moved by the driving mechanism until the multiple limiting plates contact the inner hole wall of the workpiece, and the workpiece is limited; of course, after the multiple limiting plates contact the workpiece, the workpiece is unstable, the position of the driving mechanism on the annular guide rail is adjusted, and the limiting plate contacts the inner hole wall of the workpiece again until the multiple limiting plates contact the inner hole wall of the workpiece, and the workpiece is stable on the upper mounting plate; at the same time, the upper mounting plate is placed in the milling processing area, and the workpiece is processed, and after processing is completed, the workpiece is taken down and replaced with untreated workpieces;

[0036] The driving mechanism drives the limiting plates to move, and the workpiece is positioned when the multiple sets of limiting plates contact the inner hole of the workpiece, since each set of limiting plates moves independently, each set of limiting plates can contact the inner hole wall of the workpiece to position, so that the workpiece can be stably positioned at the milling processing area during processing;

[0037] The driving mechanism drives the limiting plates to move, and the multiple sets of limiting plates are loosened and clamped to replace the artificial disassembly of the workpiece, so that the workpiece can be quickly and efficiently worked, time is saved, and efficiency is improved;

[0038] The driving mechanism drives the limiting plates to move, and since the moving distance of each set of limiting plates is set when the workpiece is positioned, the contact between the limiting plates and the inner hole of the workpiece can be observed when the workpiece is positioned, and whether the inner hole of the workpiece is qualified can be detected, so as to improve the quality of workpiece processing. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a structural schematic view of the application;

[0040] Figure 2 It is a connection schematic view of the annular guide rail and the upper mounting plate of the application;

[0041] Figure 3 It is a structural schematic view of the driving mechanism of the application;

[0042] Figure 4 It is a structural schematic view of the fixing assembly of the application;

[0043] Figure 5 It is a connection schematic view of the annular protective pad and the upper mounting plate of the application;

[0044] Figure 6 It is a structural schematic view of the upper mounting plate of the application.

[0045] In the figure: 10 upper mounting plate; 11, leveling part; 12, annular protective pad; 121, guide line; 13, operation port; 20, lower mounting plate; 21, positioning hole; 30, support plate; 31, movable port; 40, workpiece; 50, limiting plate; 51, first arc-shaped part; 52, second arc-shaped part; 60, annular guide rail; 61, fixed rod; 70, driving mechanism; 71, positioning bolt; 72, mounting frame; 73, sliding sleeve; 74, electric cylinder; 75, fixing assembly; 751, fixed nut; 752, screw rod; 753, mounting sleeve. DETAILED DESCRIPTION

[0046] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0047] Embodiment:

[0048] As shown in the figure, the embodiment provides an aluminum part milling positioning clamp, which comprises: Figures 1-6

[0049] an upper mounting plate 10, the upper mounting plate 10 is provided with an operation opening 13, and the operation opening 13 is provided with a workpiece 40;

[0050] two groups of annular guide rails 60 arranged at the bottom end surface of the upper mounting plate 10, and a fixing rod 61 arranged between the annular guide rail 60 and the upper mounting plate 10;

[0051] a plurality of driving mechanisms 70 arranged on the two groups of annular guide rails 60, and the driving mechanism 70 is provided with a fixing assembly 75;

[0052] a plurality of limiting plates 50 arranged on the plurality of fixing assemblies 75 respectively, and the limiting plate 50 is in contact with the inner hole wall of the workpiece 40;

[0053] wherein each group of driving mechanisms 70 rotates along the axis of the annular guide rail 60;

[0054] wherein the two groups of annular guide rails 60 and the upper mounting plate 10 are coaxially arranged.

[0055] In the embodiment, when the workpiece 40 is positioned, the workpiece 40 is placed on the upper mounting plate 10, and the limiting plate 50 is moved by the driving mechanism 70 until the plurality of limiting plates 50 are in contact with the inner hole wall of the workpiece 40, and the workpiece 40 is positioned;

[0056] Of course, when the workpiece 40 is unstable after the plurality of limiting plates 50 are in contact with the workpiece 40, the position of the driving mechanism 70 on the annular guide rail 60 is adjusted, and the limiting plate 50 is again in contact with the inner hole wall of the workpiece 40 until the plurality of limiting plates 50 are in contact with the inner hole wall of the workpiece 40, and the workpiece 40 is stably placed on the upper mounting plate 10;

[0057] At the same time, the upper mounting plate 10 is placed in the milling area, and the workpiece 40 is processed. After the processing is completed, the workpiece 40 is removed and replaced with an untreated workpiece 40;

[0058] ​The driving mechanism 70 drives the limiting plate 50 to move, and when a plurality of limiting plates 50 contact the inner hole of the workpiece 40, the workpiece 40 is limited. Since each group of limiting plates 50 moves independently, each group of limiting plates 50 can contact the inner hole wall of the workpiece 40 to limit the workpiece 40, so that the workpiece 40 can be stably positioned in the milling area during processing.

[0059] The driving mechanism 70 drives the limiting plate 50 to move, and a plurality of limiting plates 50 are loosened and clamped to replace artificial disassembly of the workpiece, which can work quickly and efficiently, save time, and improve efficiency.

[0060] The driving mechanism 70 drives the limiting plate 50 to move, and the distance of each group of limiting plates 50 is set when the workpiece 40 is limited. Therefore, when the workpiece 40 is limited, the contact between the limiting plate 50 and the inner hole of the workpiece 40 can be observed to detect whether the inner hole of the workpiece 40 is qualified, so as to improve the quality of the workpiece 40 processing.

[0061] Specifically, the driving mechanism 70 includes a mounting frame 72, two groups of sliding sleeves 73 are arranged on the mounting frame 72, and the two groups of sliding sleeves 73 are respectively connected to the two groups of annular guide rails 60. An electric cylinder 74 is arranged on the mounting frame 72, and a fixing assembly 75 is arranged on the electric cylinder 74.

[0062] In this embodiment, when the position of the driving mechanism 70 is adjusted, the electric cylinder 74 can rotate around the center of the annular guide rail 60 through the cooperation of the sliding sleeve 73 and the annular guide rail 60, so as to adjust the position of the limiting plate 50 on the fixing assembly 75, so as to adjust the irregular inner hole of the workpiece 40 to achieve the best limiting position.

[0063] Specifically, a positioning bolt 71 is arranged on the mounting frame 72, the positioning bolt 71 is in surface contact with the mounting frame 72, the sliding sleeve 73 and the annular guide rail 60, and the positioning bolt 71 is threadedly connected with the mounting frame 72.

[0064] In this embodiment, after the electric cylinder 74 is adjusted, the positioning bolt 71 is in surface contact with the annular guide rail 60 through the threaded cooperation of the positioning bolt 71 and the mounting frame 72, so as to position the electric cylinder 74.

[0065] Specifically, the fixing assembly 75 includes a mounting sleeve 753, the mounting sleeve 753 is arranged on the electric cylinder 74, a screw rod 752 is arranged on the mounting sleeve 753, the limiting plate 50 is sleeved on the outer wall of the screw rod 752, and a fixing nut 751 is threadedly sleeved on the outer wall of the screw rod 752.

[0066] In this embodiment, the limiting plate 50 can be conveniently disassembled from the screw rod 752 through the threaded connection between the fixing nut 751 and the screw rod 752, so as to facilitate the maintenance and position adjustment of the limiting plate 50.

[0067] Specifically, the limiting plate 50 is provided with a first arc-shaped part 51 and a second arc-shaped part 52, and the cross-sectional diameter of the first arc-shaped part 51 is smaller than that of the second arc-shaped part 52.

[0068] In this embodiment, the first arc-shaped part 51 or the second arc-shaped part 52 can be adjusted to contact the inner hole of the workpiece 40, so as to achieve the best limiting effect.

[0069] For example, the first arc-shaped part 51 can be positioned in the narrow position of the inner hole of the workpiece 40. Figure 1 For example, the first arc-shaped part 51 can be positioned in the narrow position of the inner hole of the workpiece 40.

[0070] Specifically, the lower end of the upper mounting plate 10 is provided with a lower mounting plate 20, and the upper mounting plate 10 and the lower mounting plate 20 are provided with a support plate 30, and the lower mounting plate 20 is provided with a positioning hole 21.

[0071] In this embodiment, the lower mounting plate 20 is used to be mounted on the workbench, so that multiple sets of limiting plates 50 are arranged in the milling processing area.

[0072] Specifically, the support plate 30 is provided with a movable opening 31, and the movable opening 31 is arranged at the position of the annular guide rail 60, so as to facilitate the operation of the driving mechanism 70.

[0073] Specifically, the surface of the upper mounting plate 10 is provided with an annular protective pad 12, the inner hole of the annular protective pad 12 is smaller than the diameter of the operation opening 13, and the upper mounting plate 10 is provided with a leveling part 11.

[0074] In this embodiment, the annular protective pad 12 is used to protect the workpiece 40, prevent the workpiece 40 from being scratched, and shield the operation opening 13. When the diameter of the workpiece 40 is smaller than the diameter of the operation opening 13, the workpiece 40 can be placed on the upper mounting plate 10 for milling processing.

[0075] Specifically, the annular protective pad 12 is provided with a guide line 121, and the ratio between the shape of the guide line 121 and the cross-sectional shape of the inner hole of the workpiece 40 is 2:1.

[0076] In this embodiment, when the workpiece 40 is placed on the annular protective pad 12, the similar shape can facilitate the quick positioning of the workpiece 40.

[0077] A method for using an aluminum part milling positioning clamp, comprising the following steps:

[0078] S1, protection installation:

[0079] Place the annular protection pad 12 on the upper mounting plate 10, and make the annular protection pad 12 coaxial with the upper mounting plate 10, and draw a guide line 121 on the annular protection pad 12, and make the guide line 121 similar to the inner hole of the workpiece 40;

[0080] S2, limit adjustment:

[0081] Place the workpiece 40 on the annular protection pad 12, and align the inner hole of the workpiece 40 with the guide line 121 when placing, and adjust the limiting plate 50 so that the first arc-shaped part 51 or the second arc-shaped part 52 is arranged towards the inner hole wall of the workpiece 40 closest to the workpiece 40, and fix the limiting plate 50 through the fixing assembly 75;

[0082] S3, trajectory recording:

[0083] Drive the limiting plate 50 to move until the first arc-shaped part 51 or the second arc-shaped part 52 of the limiting plate 50 contacts the inner hole wall of the workpiece 40, and then record the moving distance of the current limiting plate 50 by each set of drive mechanisms 70, so that the moving distance of each set of limiting plates 50 is equal each time;

[0084] S4, drive adjustment:

[0085] In S3, trajectory recording, if the limiting plate 50 contacts the inner hole wall of the workpiece 40 when the limiting plate 50 is not stable, adjust the position of the drive mechanism 70 on the annular guide rail 60, and repeat S2, limit adjustment, S3, trajectory recording, until the multiple sets of limiting plates 50 contact the inner hole of the workpiece 40, and the workpiece 40 is stably placed on the annular protection pad 12;

[0086] S5, positioning installation:

[0087] Place the lower mounting plate 20 on the workbench surface, and place the workpiece 40 in the milling area through the leveling part 11;

[0088] S6, workpiece processing:

[0089] Place the same specification workpiece 40 on the annular protection pad 12, and align the inner hole of the workpiece 40 with the guide line 121 when placing, and multiple sets of limiting plates 50 contact the inner hole wall of the workpiece 40 under the drive of the drive mechanism 70, and limit the workpiece 40, and after processing is completed, the workpiece 40 is removed, and the same specification workpiece 40 is processed by repeating the step.

[0090] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A method for using a positioning fixture for milling aluminum parts, characterized in that: The positioning fixture includes: Upper mounting plate (10); the upper mounting plate (10) is provided with an operation port (13); the operation port (13) is provided with a workpiece (40); Two sets of annular guide rails (60) are provided on the bottom end face of the upper mounting plate (10); a fixing rod (61) is provided between the annular guide rails (60) and the upper mounting plate (10). Multiple drive mechanisms (70) are mounted on two sets of annular guide rails (60); each drive mechanism (70) is equipped with a fixing component (75). Multiple sets of limiting plates (50) are respectively disposed on multiple sets of the fixing components (75); the limiting plates (50) are in contact with the inner wall of the workpiece (40); Each of the drive mechanisms (70) rotates along the axis of the annular guide rail (60); Among them, the two sets of annular guide rails (60) and the upper mounting plate (10) are coaxially arranged; The drive mechanism (70) includes a mounting frame (72), on which two sets of sliding sleeves (73) are provided. The two sets of sliding sleeves (73) are slidably connected to two sets of annular guide rails (60). An electric cylinder (74) is provided on the mounting frame (72), and the fixing component (75) is provided on the electric cylinder (74). The mounting bracket (72) is provided with a positioning bolt (71), which passes through the mounting bracket (72), the sliding sleeve (73) and contacts the surface of the annular guide rail (60). The positioning bolt (71) is threadedly connected to the mounting bracket (72). The fixing component (75) includes a mounting sleeve (753), which is disposed on the electric cylinder (74). A screw (752) is disposed on the mounting sleeve (753). A limiting plate (50) is sleeved on the outer wall of the screw (752). A fixing nut (751) is also threaded onto the outer wall of the screw (752). The limiting plate (50) is provided with a first arc-shaped part (51) and a second arc-shaped part (52), wherein the cross-sectional diameter of the first arc-shaped part (51) is smaller than the cross-sectional diameter of the second arc-shaped part (52); A lower mounting plate (20) is provided below the upper mounting plate (10), and a support plate (30) is provided between the upper mounting plate (10) and the lower mounting plate (20). A positioning hole (21) is provided on the lower mounting plate (20). The support plate (30) has an opening (31) located at the position of the annular guide rail (60); The upper mounting plate (10) is provided with an annular protective pad (12) on its surface. The inner hole of the annular protective pad (12) is directly smaller than the diameter of the operating port (13). The upper mounting plate (10) is provided with a leveling part (11). The annular protective pad (12) is engraved with guide lines (121), and the ratio between the shape of the guide lines (121) and the cross-sectional shape of the inner hole of the workpiece (40) is 2:1; The method includes the following steps: S1. Protective Installation: Place the annular protective pad (12) on the upper mounting plate (10) and make the annular protective pad (12) coaxial with the upper mounting plate (10). At the same time, draw guide lines (121) on the annular protective pad (12) and make the guide lines (121) similar to the inner hole of the workpiece (40). S2, Limit Adjustment: Place the workpiece (40) on the annular protective pad (12), and align the inner hole of the workpiece (40) with the guide line (121) during placement. At the same time, adjust the limiting plate (50) so that the first arc-shaped part (51) or the second arc-shaped part (52) is set towards the inner hole wall of the workpiece (40), and fix the limiting plate (50) by the fixing component (75). S3, Track Recording: The driving mechanism (70) drives the limiting plate (50) to move. The first arc-shaped part (51) or the second arc-shaped part (52) of the straight limiting plate (50) contacts the inner wall of the workpiece (40). Then, each group of driving mechanisms (70) records the current moving distance of the limiting plate (50) so that the moving distance of each group of limiting plates (50) is equal each time. S4, Driver Debugging: In S3, trajectory recording, if the limiting plate (50) contacts the inner wall of the workpiece (40) and the workpiece (40) is unstable in the limiting position, adjust the position of the drive mechanism (70) on the ring guide rail (60) and repeat S2, limiting adjustment, S3, trajectory recording until multiple sets of limiting plates (50) contact the inner hole of the workpiece (40) and the workpiece (40) is stable on the ring protective pad (12); S5. Positioning and installation: Place the lower mounting plate (20) on the worktable and place the workpiece (40) in the milling area through the leveling part (11); S6. Workpiece machining: Place workpieces (40) of the same specifications on the annular protective pad (12), and align the inner hole of the workpiece (40) with the guide line (121) when placing it. At the same time, multiple sets of limiting plates (50) are driven by the drive mechanism (70) to contact the inner hole wall of the workpiece (40) to limit the workpiece (40). After the processing is completed, remove the workpiece (40) and repeat this step to process multiple sets of workpieces (40) of the same specifications.

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