Conical surface concentric assembling and bonding fixing device

Abstract

The utility model discloses a conical surface concentric assembling and bonding fixing device, and relates to the technical field of ammunition assembling. Comprising an upper tip, a material positioning clamp, a four-axis adjusting platform and a rotating platform, the upper tip is used for fixing a workpiece, the material positioning clamp is used for fixing materials, the material positioning clamp is installed on the four-axis adjusting platform, and the four-axis adjusting platform is installed on the rotating platform; wherein the center of the upper tip is provided with a negative pressure channel in the height direction, the outer side conical surface of the upper tip is provided with an annular groove communicated with the negative pressure channel, the outer side conical surface of the upper tip is matched with the inner side conical surface of the workpiece, and the outer side conical surface of the upper tip and the inner side conical surface of the workpiece form a coaxial structural body through negative pressure adsorption of the annular groove and the negative pressure channel. The device disclosed by the utility model can quickly and accurately position the inner conical surface and the axial lead of the material and the outer conical surface and the axial lead of the workpiece, and coaxially assemble and bond the workpiece and the material.

Description

Technical Field

[0001] The utility model relates to the technical field of ammunition assembly, in particular to a conical surface concentric assembly and bonding fixing device. Background Art

[0002] During ammunition assembly, the precision of the assembly between the material (the projectile base) and the workpiece (the core functional component of the ammunition, containing the explosive / propellant) significantly impacts performance, thus requiring high precision. The conventional assembly method involves placing the workpiece directly into the material's inner conical surface. A worker shakes it in three pre-defined directions, using a feel for the movement to place paper strips in the direction of greatest shaking. This process is repeated for comparison. When the workpiece stops shaking, it is removed, glue is applied to the material's inner conical surface, and then the workpiece is placed back into the material for bonding and curing. This method relies entirely on random matching and worker proficiency, making it laborious, time-consuming, and error-prone. Utility Model Content

[0003] The main purpose of the utility model is to provide a conical surface concentric assembly and bonding fixing device to overcome the problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A conical surface concentric assembly and bonding fixation device, comprising an upper center, a material positioning fixture, a four-axis adjustment platform, and a rotating platform. The upper center is used to fix the workpiece, the material positioning fixture is used to fix the material, the material positioning fixture is mounted on the four-axis adjustment platform, and the four-axis adjustment platform is mounted on the rotating platform.

[0006] Among them, a negative pressure channel is provided at the center of the upper tip along the height direction, and an annular groove is provided on the outer conical surface of the upper tip connected to the negative pressure channel. The outer conical surface of the upper tip cooperates with the inner conical surface of the workpiece, and the two form a coaxial structure through the negative pressure adsorption of the annular groove and the negative pressure channel.

[0007] Furthermore, the upper center has an upper center axis, the rotating platform has a rotating platform axis, and the upper center axis coincides with the rotating platform axis.

[0008] Furthermore, the workpiece has an axis line, and when the workpiece is adsorbed on the upper center by negative pressure, the axis line of the workpiece coincides with the axis line of the upper center.

[0009] Furthermore, a measuring probe is included, the material has an inner conical surface, and the measuring probe is used to detect the spatial position data of the inner conical surface of the material.

[0010] Furthermore, the rotating platform is used to drive the material to rotate along the Z axis, and the four-axis adjustment platform is used to drive the material to move along the X axis and the Y axis and to move and rotate along the X axis and the Y axis.

[0011] Furthermore, the workpiece has an outer conical surface, which matches the inner conical surface of the material, and the two are bonded together by a curing agent.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This new device can quickly and accurately locate the inner conical surface and axis of the material and workpiece, and can also perform coaxial assembly and bonding of the workpiece and material. Compared with existing technologies, it has the advantages of fewer detection locations and faster and more accurate axis centerline locating. It utilizes mechanical positioning for one-time assembly and bonding, eliminating the need for repeated alignment, fully ensuring assembly accuracy. It can achieve assembly and bonding positioning more quickly, simply, and accurately, and the data is traceable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a structural diagram of the utility model for measuring the elliptical scattered point data of the inner cone surface of the material.

[0016] Figure 3 This is a principle diagram of the material inner cone surface and material axis adjustment method of the utility model.

[0017] Figure 4 This is a schematic diagram of the positioning structure of the material and workpiece during assembly according to the present invention.

[0018] Figure 5 This is a schematic diagram of the structure of the material and the workpiece after bonding and curing.

[0019] Figure 6 It is a schematic diagram of the structure of the utility model when the center and the workpiece are adsorbed.

[0020] Explanation of the accompanying numbers: 1-upper center, 2-workpiece, 3-material, 4-material positioning fixture, 5-four-axis adjustment platform, 6-rotating platform, 7-measuring probe, 8-curing agent, 11-upper center axis, 12-negative pressure channel, 13-annular groove, 21-workpiece axis, 22-workpiece outer cone, 31-material axis, 32-material inner cone, 61-rotating platform axis. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.

[0022] Example 1

[0023] Combine Figure 1-2 、 Figure 4-6 This embodiment provides a conical surface concentric assembly and adhesive fixing device, including an upper tip 1, a material positioning fixture 4, a four-axis adjustment platform 5, a rotating platform 6, and a measuring probe 7. The upper tip 1 is used to fix the workpiece 2, the material positioning fixture 4 is used to fix the material 3, the material positioning fixture 4 is installed on the four-axis adjustment platform 5, and the four-axis adjustment platform 5 is installed on the rotating platform 6.

[0024] Among them, a negative pressure channel 12 is provided in the center of the upper tip 1 along the height direction, and the outer conical surface of the upper tip 1 is provided with an annular groove 13 connected to the negative pressure channel 12. The outer conical surface of the upper tip 1 cooperates with the inner conical surface of the workpiece 2, and the two form a coaxial structure through the negative pressure adsorption of the annular groove 13 and the negative pressure channel 12.

[0025] In this embodiment, the upper center 1 has an upper center axis 11, and the rotating platform 6 has a rotating platform axis 61. The upper center axis 11 and the rotating platform axis 61 coincide with each other. The workpiece 2 has a workpiece axis 21. When the workpiece 2 is attached to the upper center 1 by negative pressure, the workpiece axis 21 coincides with the upper center axis 11. The material 3 has a material axis 31 and an inner conical surface 32. The measuring probe 7 is used to detect the spatial position data of the inner conical surface 32.

[0026] In this embodiment, the rotating platform 6 is used to drive the material 3 to rotate along the Z axis, and the four-axis adjustment platform 5 is used to drive the material 3 to move along the X axis and the Y axis as well as to move and rotate along the X axis and the Y axis.

[0027] In another embodiment, the four-axis adjustment platform 5 and the rotating platform 6 can be combined into a five-axis platform, the bottom layer is a rotating platform, and the rotation axis is the z-axis; the middle layer is a swing axis, which can rotate around the x-axis and y-axis respectively; the top layer is a translation axis, which can translate along the x-axis and y-axis.

[0028] In this embodiment, the workpiece 2 has an outer conical surface 22 , which matches the inner conical surface 32 of the material, and the two are bonded together by a curing agent 8 .

[0029] See Figure 1 The material 3 is fixed on the four-axis adjustment platform 5 by the material positioning fixture 4, the four-axis adjustment platform 5 is installed on the rotating platform 6, the workpiece 2 is fixed on the upper center 1, and the upper center 1 and the rotating platform 6 rely on the mechanical structure to maintain the coaxial center and can move along the axis direction.

[0030] Specifically, the workpiece 2 is fixed on the matching surface of the upper center 1. The upper center 1 has a strictly processed matching surface, and the shape of the matching surface can ensure that the workpiece 2 is concentric with the upper center 1 with high precision.

[0031] See also Figure 2 After the material 3 is secured by the material positioning fixture 4, the measuring probe 7 cooperates with the rotating platform 6 to detect the spatial position data of the material's inner conical surface 32. Multiple data sets at the same height are grouped together. At least two sets of data at two different heights are required to inversely determine the conical surface spatial position parameters of the material's inner conical surface 32. The more data sets measured, the more accurate the parameters obtained.

[0032] See also Figure 4 、 Figure 5 An appropriate amount of curing agent 8 is injected into the inner conical surface 32 of material 3. The upper centering tip 1 slowly moves the workpiece 2 downward along its axis. The curing agent 8 diffuses fully into the gap between the workpiece's outer conical surface 22 and the material's inner conical surface 32, filling the gap between them. When the upper centering tip 1 reaches a certain resistance value, it stops moving and remains in its current position for a period of time. Curing agent 8 solidifies, bonding the workpiece 2 and material 3 together. The upper centering tip 1 releases the workpiece 2, and the material positioning fixture 4 releases the material 3, resulting in a bonded workpiece 2 and material 3. The data obtained from measurements, calculations, and operations is stored with the corresponding product number for easy traceability.

[0033] See also Figure 6 The workpiece 2 is coaxially adsorbed by the negative pressure inside the negative pressure channel 12 connected to the annular groove 13 on the conical surface of the upper top 1 by the center of the upper top 1, forming a coaxial structure; after the workpiece 2 and the material 3 are solidified, when they need to be separated from the upper top 1, the negative pressure inside the negative pressure channel 12 connected to the annular groove 13 on the conical surface by the center of the upper top 1 is released, and the solidified body of the workpiece 2 and the material 3 is separated from the upper top 1.

[0034] Example 2

[0035] See also Figure 3 , this embodiment provides a method for adjusting the coincidence of the cone axis and the rotation axis.

[0036] A cone with a small deviation between its axis AF and the z-axis of rotation is located in the xy plane. A simple measurement is performed on the cone. Based on the calculated results, the cone is rotated and translated to achieve the goal of aligning its axis AF with the z-axis (the axis of rotation). This method only considers the case where the intersection of the cone and the plane is an elliptical curve. The method is as follows:

[0037] First, measure the cone data: measure at least two sets of coordinate data of the cone surface parallel to the xy plane at different heights.

[0038] Next, calculate the parameters of the cone: fit an elliptical curve to the measured data at each height, and find the ellipse's semimajor and semiminor axes. Fit the ellipse's major axis vertices on the same side of the ellipse's rotation axis AF to form two lines, BD and CE. Their intersection is the cone's vertex A, and their angle bisector AF is the ellipse's axis. Similarly, fitting the ellipse's minor axis vertex yields vertex A and axis F. The ellipse's axis AF intersects the xy plane at point H (m, n, 0). Calculate the angle θx between the cone's axis and the xz plane, and the angle θy between the cone's axis and the yz plane.

[0039] Finally, move the cone to align its axes: translate the cone a distance of -m along the x-axis and then a distance of -n along the y-axis, so that point H coincides with the xy origin, O. Rotate it along the x-axis by θx to align AF with the xz plane; rotate it along the y-axis by θy to align AF with the yz plane. At this point, the cone's axis AF is aligned with the z-axis.

[0040] According to the aforementioned method for adjusting the coincidence of the cone axis and the rotation axis, the spatial position of the material axis 31 of the inner conical surface 32 of the material 3 is calculated. The four-axis adjustment platform 5 has the function of moving along the x-axis and y-axis relative to the plane of the rotating platform 6, as well as the function of rotating along the x-axis and y-axis. Based on the calculated spatial position data of the virtual cone vertex of the material inner conical surface 32 and the material axis 31, the four-axis adjustment platform 5 uses the aforementioned movement method to translate the material along the x-axis and y-axis according to the calculated data, and rotate the material along the x-axis and y-axis according to the calculated data, so that the material axis 31 coincides with the rotating platform axis 61 of the rotating platform 6.

[0041] In this embodiment, the axis of material 3 is determined through mechanical positioning, and the position of the material's inner cone 32 is calculated by measuring spatial position data at two or more different heights. The four-axis adjustment platform 5 uses this calculation to translate and rotate material 3 so that the material's axis 31 coincides with the rotating platform's axis 61.

[0042] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A conical surface concentric assembly and bonding fixing device, characterized in that: It comprises an upper center (1), a material positioning fixture (4), a four-axis adjustment platform (5) and a rotating platform (6), wherein the upper center (1) is used to fix the workpiece (2), the material positioning fixture (4) is used to fix the material (3), the material positioning fixture (4) is installed on the four-axis adjustment platform (5), and the four-axis adjustment platform (5) is installed on the rotating platform (6); The center of the upper tip (1) is provided with a negative pressure channel (12) along the height direction, the outer conical surface of the upper tip (1) is provided with an annular groove (13) connected to the negative pressure channel (12), the outer conical surface of the upper tip (1) cooperates with the inner conical surface of the workpiece (2), and the two form a coaxial structure through the negative pressure adsorption of the annular groove (13) and the negative pressure channel (12).

2. A conical surface concentric assembly and bonding fixing device according to claim 1, characterized in that: The upper center (1) has an upper center axis (11), the rotating platform (6) has a rotating platform axis (61), and the upper center axis (11) coincides with the rotating platform axis (61).

3. A conical surface concentric assembly and bonding fixing device according to claim 2, characterized in that: The workpiece (2) has a workpiece axis (21), and when the workpiece (2) is adsorbed on the upper center (1) by negative pressure, the workpiece axis (21) coincides with the axis (11) of the upper center.

4. A conical surface concentric assembly and bonding fixing device according to claim 1, characterized in that: It also includes a measuring probe (7), the material (3) has an inner conical surface (32), and the measuring probe (7) is used to detect spatial position data of the inner conical surface (32) of the material.

5. A conical surface concentric assembly and bonding fixing device according to claim 1 or 4, characterized in that: The rotating platform (6) is used to drive the material (3) to rotate along the z-axis, and the four-axis adjustment platform (5) is used to drive the material (3) to move along the x-axis and the y-axis, and to move and rotate along the x-axis and the y-axis.

6. A conical surface concentric assembly and bonding fixing device as claimed in claim 4, characterized in that: The workpiece (2) has an outer conical surface (22) of the workpiece, and the outer conical surface (22) of the workpiece cooperates with the inner conical surface (32) of the material, and the two are bonded together by a curing agent (8).

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