Tray for trepanning large annular workpiece

Abstract

The utility model relates to a tray for trepanning a large annular workpiece, and belongs to the technical field of machining. The tray comprises a bottom tray body, an upper tray body and a supporting frame which are concentrically arranged, the supporting frame is fixed to the upper side of the bottom tray body, the upper tray body is fixed to the upper side of the supporting frame, and a plurality of rotating table positioning blocks are symmetrically arranged on the bottom face of the supporting frame. The tray designed by the utility model is fixedly connected with the rotating table through the bottom positioning block, and the upper tray is used for placing a large annular workpiece, so that the axial trepanning processing of the annular workpiece can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a tray for opening holes in a large annular workpiece. Background Art

[0002] During the machining process, it is often necessary to machine distributed holes along the axial direction on the outer circumference of the disk surface of large annular parts or cylindrical parts. There are three main existing processing methods for peripheral distribution holes. The first is gantry milling machine processing: the workpiece is placed flat and a vertical spindle is used to drill holes on the disk surface. However, when the diameter of the part is larger than the span of the gantry, this method cannot be used for processing; the second is boring and milling machine processing, the workpiece axis is placed horizontally, and a horizontal spindle is used to drill holes on the disk surface. However, if the disk surface is too large and exceeds the X and Y strokes of the basic machine tool, this method cannot be used for processing, and it is difficult to fix the axis of large annular parts when placed horizontally; the third is to use a boring and milling machine plus a rotary table for processing, the workpiece is placed flat on the rotary table, and the peripheral distribution holes of the annular parts can be rotated by the rotary table during processing, and the horizontal spindle is used to install the right-angle attachment to perform axial processing of each distribution hole on the circumferential surface. This method is the most convenient and flexible for processing the peripheral distribution holes of annular workpieces, but the existing rotary table is small in size, and large annular parts cannot be placed on the rotary table for processing. Summary of the invention

[0003] In order to solve the problems in the prior art, the utility model patent designs a pallet for opening holes in large annular workpieces to solve the problem that the existing rotary table is small in size and cannot process large annular workpieces.

[0004] The technical solution adopted by the utility model is: the tray comprises a bottom tray, an upper tray and a support frame, the three are arranged concentrically, the inner end of the support frame is fixed to the upper side of the bottom tray, the upper tray is fixed to the upper side of the outer end of the support frame, and the bottom surface of the support frame is symmetrically provided with a plurality of rotary worktable positioning blocks.

[0005] Furthermore, the upper tray includes a regular octagonal support frame and eight support plates, the eight support plates are respectively located at eight corners of the regular octagonal support frame, the support frame includes eight support rods arranged in a cross shape, and the support frame is welded and fixed to the outer ends of the eight support rods.

[0006] Furthermore, the middle sections of the eight support rods of the support frame are connected with a regular octagonal connection frame, the bottom surface of the connection frame is connected and fixed to the bottom tray, the support frame includes inner and outer two-layer frame bodies, and the bottom of the tray is fixed on the inner and outer two-layer frame bodies of the support frame.

[0007] Furthermore, the number of the positioning blocks is 4, and the 4 positioning blocks are symmetrically distributed and welded to the lower side of the connection between the support rod and the connection frame.

[0008] Furthermore, a workpiece positioning and adjusting device is fixed on the upper side of the support plate, and the workpiece positioning and adjusting device includes a radial tightening mechanism, and the radial tightening mechanism is arranged along the radial direction of the center of the tray.

[0009] Furthermore, the radial tightening mechanism is a jack.

[0010] Or as another design, the radial tightening mechanism includes an L-shaped fixing plate and a tightening bolt, the fixing plate includes a bottom plate and a vertical plate, the bottom plate is fixed along the radial direction of the center of the tray, the vertical plate has an internal threaded hole radially opened on the upper side, and the tightening bolt is threadedly connected in the internal threaded hole.

[0011] Furthermore, a length scale line is radially arranged at the center of the upper side surface of the bottom plate.

[0012] Furthermore, the bottom tray is a square Japanese-shaped frame structure.

[0013] Compared with the prior art, the utility model patent design of a pallet for opening holes in large annular workpieces has the following advantages in that: the pallet is connected and positioned with the rotary table through a bottom pallet and a positioning block, the pallet's receiving area is expanded by a M-shaped support frame, and the large annular workpiece is carried by the upper pallet, thereby realizing the rotary table's carrying of the large annular workpiece, and driving the large annular workpiece to rotate during processing; the pallet is provided with a two-layer support frame and a connecting frame to increase the strength and stability of the support frame; at the same time, a workpiece positioning and adjustment device is also provided on the pallet to radially move the carried annular workpiece, so as to facilitate the adjustment of the annular workpiece to align with the center of the rotary table; and when using a radial tightening mechanism composed of a fixed plate and a tightening bolt, the adjustment process of the annular workpiece can be intuitively controlled through the length scale line on the upper side of the bottom plate, which is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top view of the structure of a tray for opening holes in large annular workpieces.

[0015] Figure 2 It is a schematic diagram of the side view application structure of a pallet for opening holes in large annular workpieces.

[0016] In the figure, 1 is a bottom tray, 2 is a support frame, 3 is an upper tray, 4 is a positioning block, 5 is a rotary table, 6 is an annular workpiece, 7 is a processing spindle, 21 is a connecting frame, 31 is a support plate, 32 is a support frame, 33 is a radial tightening mechanism, 331 is a fixing plate, and 332 is a tightening bolt. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the utility model are clearly and completely described, and the described embodiments are only embodiments of a part of the invention, not all of it. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0018] like Figure 1 , 2 As shown, the utility model patent designs an embodiment of a tray for opening holes in a large annular workpiece. In this embodiment, the bottom tray 1, the upper tray 3 and the support frame 2 are provided. The bottom tray 1 is a square Japanese-shaped frame structure, which is welded with I-beams and is smaller than the work surface of the rotary table 5. The bottom tray 1 is provided with multiple bolt mounting holes corresponding to the rotary table 5, and bolts are used to connect and fix it when it is used. The support frame 2 has eight support rods, which are made of I-beams and arranged in a M-shaped docking arrangement. The bottom of the support rod is welded to the bottom tray 1. At the bottom of the support frame 2, the rotary table positioning blocks 4 are respectively welded at the centers of the four sides of the corresponding bottom tray 1. The four positioning blocks 4 are symmetrically arranged. When used, they are just located outside the centers of the four sides of the rotary table 5, which are used for the connection and positioning of the tray and the rotary table 5. The middle part of the eight support rods of the support frame 2 is connected with 8 equal-length I-beams to form a regular octagonal connection frame 21. The bottom of the connection frame 21 is also welded to the bottom tray 1.

[0019] The upper tray 3 is fixed to the outer end of the support frame 2, and includes a support plate 31 and a support frame 32. The support frame 32 includes an inner and outer regular octagonal frame. Both frames are made of I-beams and welded to the outer ends of the eight support rods of the support frame 2. There are 8 support plates 31, which are evenly welded on the upper side of the outer ends of the eight support rods of the support frame 2, and the bottom crosses the inner and outer frames of the support frame 32. The support plate 31 is made of steel plate and is arranged along the radial direction of the center of the tray.

[0020] A radial tightening mechanism 33 is provided on the upper side of each support plate 31 of the upper tray 3, and the radial tightening mechanism 33 can adopt a jack. In the present embodiment, the radial tightening mechanism 33 is composed of an L-shaped fixing plate 331 and tightening bolts 332. The fixing plate 331 includes a bottom plate and a vertical plate, which are arranged radially along the center of the tray, and the vertical plate is located on the outside. Bolt holes are provided on the support plate 31, and the bottom plate is connected and fixed to the support plate 31 by bolts. Length scale lines are provided on the upper side surface of the bottom plate along the radial center line. An internal threaded hole is provided radially at the center of the vertical plate of the fixing plate 331, and the tightening bolts 332 are threadedly connected in the internal threaded hole of the vertical plate.

[0021] When the pallet for drilling holes in a large annular workpiece disclosed in the utility model patent is used, the bottom of the pallet is clamped and positioned on the rotary table 5 by four positioning blocks 4, the bottom pallet 1 falls on the work surface of the rotary table 5 and is fixed by bolts, and the annular workpiece 6 is lifted onto the pallet by a crane, and the bottom of the annular workpiece 6 falls on the support plate 31. The position of the annular workpiece 6 is adjusted by rotating the tightening bolts 332 using a tool. During the adjustment process, the adjustment position of the annular workpiece 6 can be quickly determined by the scale lines on the bottom plate of the fixed plate 331, so that the center of the annular workpiece 6 is aligned with the center of the rotary table 5, and then the processing spindle 7 can be used to perform drilling processing on the annular workpiece 6.

[0022] The above contents are only preferred embodiments of the present invention and cannot be used to limit the scope of implementation of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention are still within the scope of the present invention.

Claims

1. A tray for opening a hole in a large annular workpiece, characterized in that: The tray comprises a bottom tray, an upper tray and a support frame, which are arranged concentrically. The inner end of the support frame is fixed to the upper side of the bottom tray, and the upper tray is fixed to the upper side of the outer end of the support frame. The bottom surface of the support frame is symmetrically provided with a plurality of rotary table positioning blocks. The upper tray includes a regular octagonal support frame and eight support plates, the eight support plates are respectively located on the upper sides of eight angles of the regular octagonal support frame, the support frame includes eight support rods arranged in a cross shape, the support frame is welded and fixed to the outer ends of the eight support rods, and the support rods are welded to the angles of the support frame; A workpiece positioning and adjusting device is fixed on the upper side of the support plate, and the workpiece positioning and adjusting device includes a radial tightening mechanism, and the radial tightening mechanism is arranged along the radial direction of the center of the tray; The radial tightening mechanism includes an L-shaped fixing plate and a tightening bolt, the fixing plate includes a bottom plate and a vertical plate, the bottom plate is arranged radially along the center of the tray, the vertical plate is provided with an internal threaded hole radially along the vertical plate, and the tightening bolt is threadedly connected in the internal threaded hole; A length scale line is radially arranged at the center of the upper side surface of the bottom plate.

2. A tray for opening a hole in a large annular workpiece according to claim 1, characterized in that: The middle sections of the eight support rods of the support frame are connected with a regular octagonal connection frame, the bottom surface of the connection frame is connected and fixed to the bottom tray, the support frame includes inner and outer two-layer frame bodies, and the bottom of the tray is fixed on the inner and outer two-layer frame bodies of the support frame.

3. A tray for opening a hole in a large annular workpiece according to claim 2, characterized in that: The number of the positioning blocks is 4, and the 4 positioning blocks are symmetrically distributed and welded to the lower side of the connection between the support rod and the connection frame.

4. A tray for drilling a large annular workpiece according to claim 3, characterized in that: The bottom tray is a square Japanese-shaped frame structure.

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