Positioning device

Abstract

The invention is applied to the field of machining, and particularly relates to a vertical lathe offline clamping and positioning device. The positioning device comprises a supporting part, a rotating part and a leveling part, the rotating part is located between the supporting part and the leveling part, the leveling part can rotate through the rotating part, the leveling part is composed of a marking rod, a marking needle, a supporting rod and a rotating assembly, one end of the supporting rod is fixedly connected with the rotating part, and the other end of the supporting rod is fixedly connected with the rotating assembly. One end of the scriber is movably connected with the scriber body, the other end of the scriber body is movably connected with the scriber body through a rotating assembly, the scriber body can rotate around the rotating assembly, and the scriber body is movably connected with one end of the scriber body and can rotate around the connecting point of the scriber body and the scriber body. The device is simple and reliable in structure and convenient to operate, and solves the problem of low production efficiency caused by frequent shutdown of a machine tool due to online workpiece clamping, leveling and alignment in the working procedure in the prior art by putting an offline clamping and leveling device into use.

Description

Technical Field

[0001] The invention is applied to the field of mechanical processing, and in particular relates to an offline clamping and positioning device for a vertical lathe. Background Art

[0002] In the field of mechanical processing, the processing features of heavy rotary workpieces are usually processed by vertical lathes. Before processing, it is first necessary to move the workpiece to position and adjust the workpiece processing coordinate system and the machine tool coordinate system so that they coincide with each other. That is, the workpiece needs to be leveled, aligned, and clamped to the machine tool. Leveling and alignment are important steps to ensure the accuracy of the processed workpiece and the process quality. Leveling means that the workpiece reference plane is parallel to the X-axis of the machine tool; alignment means that the workpiece rotation axis coincides with the lathe spindle (Z-axis) axis. The existing clamping, leveling, and alignment process is completed online (on the machine tool). The process takes up the effective cutting time of the machine tool, especially the heavy workpiece (5T≤workpiece≤maximum load-bearing capacity of the machine tool), which affects the machine tool's operating rate and causes economic losses. Summary of the invention

[0003] The present invention provides a positioning device, which solves the problem of low production efficiency caused by frequent machine tool shutdown due to the clamping, leveling and alignment of workpieces on the line in the prior art.

[0004] The objective of the present invention is achieved as follows: a positioning device, the positioning device comprises a supporting part, a rotating part and a leveling part, the rotating part is located between the supporting part and the leveling part, the leveling part can be rotated through the rotating part, the leveling part is composed of a rowing rod, a rowing needle, a supporting rod and a rotating assembly, one end of the support rod is fixedly connected to the rotating part, and the other end is movably connected to the rowing rod through a rotating assembly, the rowing rod can rotate around the rotating assembly, the rowing needle is movably connected to one end of the rowing rod, and the rowing needle can rotate around the connection point with the rowing rod.

[0005] In one embodiment, the rotating part includes a rotating member, a centering wheel assembly, and a rotating ring. The rotating member is arranged between the supporting part and the rotating ring. The centering wheel assembly is used to movably connect the rotating ring with the supporting part.

[0006] In one embodiment, the support portion includes a support frame and a centering component, and the centering component is coaxially arranged with the support frame.

[0007] In one embodiment, the centering assembly includes a shaft cover, a centering shaft, an elastic member, a shaft ring, and a limiting plate. The shaft ring is nested and linked with the centering shaft. The elastic member is arranged between the shaft cover and the shaft ring, and the limiting plate is arranged at one end of the shaft ring away from the shaft cover.

[0008] In one embodiment, the support frame includes a plurality of support columns, a support seat, and a fixing ring. A plurality of the support columns are welded to the support seat, and the fixing ring is fixedly connected to the support columns.

[0009] In one embodiment, a T-shaped slot is provided on the support rod, and the rotating assembly can slide up and down along the support rod.

[0010] In one embodiment, the rotating assembly includes a rotating member and a sliding member, and the rotating member can rotate around the sliding member.

[0011] In one embodiment, the stroke needle is connected to the stroke rod movable part, and a limiting structure is provided on the movable part, and the limiting structure can fix the angle of the stroke rod.

[0012] In one embodiment, a fixing structure is disposed on the rotating assembly, and the fixing structure can limit the angle of the rowing rod.

[0013] A leveling method for the positioning device comprises the following steps:

[0014] S1: First, a workpiece is placed on a workbench, the workbench is arranged on the rotating part, and the height and angle of the leveling part are adjusted according to the height of the workpiece;

[0015] S2: rotating the rotating part to verify the vertical line of the workpiece in the height direction, and adjusting the height position of the workpiece according to the verification result so that the workpieces are on the same height plane;

[0016] S3: verifying the radial end face impact point of the workpiece, and radially adjusting the workpiece until the distance between the marking needle and the end face impact point is the same, thereby completing the alignment of the workpiece;

[0017] S4: After the leveling and alignment of the workpiece are completed, the workpiece is clamped on the workbench and waits for subsequent machine tool processing.

[0018] The device has a simple and reliable structure and is easy to operate. Through the use of the offline clamping and leveling device, the processing procedures are changed from "online" to "offline", which improves the machine tool utilization rate and greatly guarantees the smooth operation of production and the comprehensive utilization efficiency of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the structural explosion diagram of the positioning device;

[0020] Figure 2 It is a cross-sectional view of the structure of the rotating part;

[0021] Figure 3 It is a cross-sectional view of the structure matching of the centering component;

[0022] Figure 4 It is a structural schematic diagram of the support part;

[0023] Figure 5 It is a structural diagram of the leveling part;

[0024] 100-support part, 110-support frame, 120-centering assembly, 121-centering shaft, 122-elastic part, 123-shaft cover, 124-shaft ring, 125-limiting plate, 130-locating pin, 131-locating pin, 200-rotating part, 210-rotating part, 220-centering wheel assembly, 230-rotating circle, 300-leveling part, 310-support rod, 320-rotating assembly, 330-scratching rod, 340-scratching needle, 341-movable part, 400-workbench, 500-workpiece. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right", "top", "bottom", "bottom end", "top end" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] A positioning device comprises a supporting part 100, a rotating part 200 and a leveling part 300, wherein the rotating part 200 is located between the supporting part 100 and the leveling part 300, and the leveling part 300 can be rotated through the rotating part 200. The leveling part 300 is composed of a stroke rod 330, a stroke needle 340, a supporting rod 310 and a rotating assembly 320, and one end of the supporting rod 310 is fixedly connected to the rotating part 200. Specifically, one end of the supporting rod 310 is fixed to the rotating part 200 by bolt connection. Preferably, the supporting rod 310 is fixed to the outer ring edge of the rotating part 200. After the leveling part 300 is connected to the rotating part 200, the axial parallelism between the leveling part 300 and the supporting part 100 is ensured, and the axial parallelism can ensure the accuracy of the stroke needle marking.

[0029] The other end is movably connected to the rowing rod 330 through the rotating component 320, and the rowing rod 330 can rotate around the rotating component 320. The marking needle 340 is movably connected to one end of the rowing rod 330, and the marking needle 340 can rotate around the connection point with the rowing rod 330. The rowing rod 330 can be rotated within a predetermined range through the rotating component 320. At the same time, the marking needle 340 can realize the rotation on the rowing rod 330 by rotating the fixed axis, which can meet the needs of leveling and alignment of parts of various specifications.

[0030] The rotating part 200 includes a rotating member 210 , a centering wheel assembly 220 , and a rotating ring 230 . The rotating member 210 is disposed between the supporting part 100 and the rotating ring 230 . The centering wheel assembly 220 is used to movably connect the rotating ring 230 to the supporting part 100 .

[0031] The rotating ring 230 is a circular ring structure, and an annular protrusion structure is arranged at the edge of the circular ring structure. The support frame 110 is provided with a groove structure corresponding to the annular protrusion structure. The rotating ring 230 rotates on the support frame through the cooperation between the annular protrusion structure and the groove structure. Furthermore, a first groove is arranged on the inner side of the annular protrusion structure, and a second groove is arranged on the support frame at a position corresponding to the first groove. The rotating part is located between the first groove and the second groove, so as to support the stable rotation of the rotating ring 230.

[0032] The support portion 100 includes a support frame 110 and a centering assembly 120 . The centering assembly 120 is coaxially disposed with the support frame 110 .

[0033] The centering component 120 includes a shaft cover 123, a centering shaft 121, an elastic member 122, a shaft ring 124, and a limiting plate 125. The shaft ring 124 is nested and linked with the centering shaft 121. The elastic member 122 is arranged between the shaft cover 123 and the shaft ring 124. The limiting plate 125 is arranged at the end of the shaft ring 124 away from the shaft cover 123. The centering component 120 is coaxial with the support part 100 and the rotating part 200. A plurality of positioning pins are arranged on the support frame. The limiting plate and the support frame are positioned and fixed by the positioning pins. The setting of the centering component effectively ensures the effectiveness and correctness of the needle marking mechanism.

[0034] The support rod 310 is provided with a T-shaped slot, and the rotating assembly 320 can slide up and down along the support rod 310 .

[0035] The rotating component 320 includes a rotating part and a sliding part. The rotating part can rotate around the sliding part. The rotating part is respectively connected to the row rod and the sliding part to realize the function of the row rod rotating around the support rod. The sliding part is provided with a T-shaped protrusion structure corresponding to the T-shaped slot. After the T-shaped protrusion structure of the sliding part cooperates with the T-shaped slot of the support rod, the sliding part can slide up and down along the support rod. A tightening nut is also provided on the sliding part, and the tightening nut is used to fix the position of the sliding part on the support rod.

[0036] The rotating assembly is also provided with a fixed structure, which can limit the angle of the rowing rod. Preferably, the fixed structure is a nut, and the position of the rotating part is fixed by controlling the matching clearance between the rotating part and the sliding part through the nut, thereby further fixing the angle of the rowing rod.

[0037] The stylus 340 is connected to the movable member 341, and a limiting structure is provided on the movable member 341, and the limiting structure can fix the angle of the rowing rod 330. Preferably, the movable member 341 is a ball, and the stylus 340 and the rowing rod 330 are both nested and connected with the ball.

[0038] In one embodiment, the stroke needle 340 is connected to the stroke rod 330 via a rotating fixed axis, and the stroke needle 340 can be adjusted in angle and fixed in position via the rotating axis.

[0039] The support frame 110 includes a plurality of support columns and a support seat. The plurality of support columns are welded to the support seat. A fixing ring is also provided on the support frame. The fixing ring serves to limit the plurality of support columns to the same pitch circle, thereby increasing the stability of the support frame. Preferably, there are three support columns, which are evenly distributed on the support seat. Specifically, the fixing ring is assembled to the support column by means of a pin. During assembly, it is necessary to ensure that the rotation center of the fixing ring is concentric with the distribution pitch circles of the three support columns. At the same time, a triangular frame and a supporting channel steel are also provided on the fixing ring, which effectively supports the fixing ring and ensures that the structure of the support frame is stable and reliable.

[0040] An R-shaped structural groove is provided on the end face of the fixed ring. The rotating part and the protective assembly are installed in the R-shaped groove, and then the rotating ring is installed on the fixed ring to form a bearing-type sliding structure. At the same time, the leveling part and the supporting part are linked to form a coaxial component by using 6 evenly distributed adjustable centering wheel assemblies.

[0041] The centering component is positioned and assembled on the support frame by two pins, and the centering component is coaxially arranged with the fixing ring.

[0042] The workpiece 500 is placed on the workbench 400, and the workbench 400 and the centering assembly are quickly positioned and assembled through the hole-shaft matching. The assembly composed of the workbench 400, the leveling part 300, the rotating part 200, and the supporting part 100 is defined as an offline leveling device.

[0043] A leveling method for the positioning device comprises the following steps:

[0044] S1: First, a workpiece is placed on a workbench, the workbench is arranged on the rotating part, and the height and angle of the leveling part are adjusted according to the height of the workpiece;

[0045] S2: rotating the rotating part to verify the vertical line of the workpiece in the height direction, and adjusting the height position of the workpiece according to the verification result so that the workpieces are on the same height plane;

[0046] S3: verifying the radial end face impact point of the workpiece, and radially adjusting the workpiece until the distance between the marking needle and the end face impact point is the same, thereby completing the alignment of the workpiece;

[0047] S4: After the leveling and alignment of the workpiece are completed, the workpiece is clamped on the workbench and waits for subsequent machine tool processing.

[0048] Specifically, during operation, the target workpiece is first hoisted on the workbench of the platform, the height and angle of the marking needle are adjusted and fixed according to the diameter and height of the workpiece, the rotating part is rotated to verify the punch line in the height direction of the workpiece, and the workpiece is automatically adjusted at the same time so that the workpieces are on the same height plane, that is, the workpiece leveling is completed; the punch points on the radial end face of the workpiece are verified, and the workpiece is radially moved and adjusted at the same time until the distances between the marking needle and several punches on the end face are the same, that is, the workpiece alignment is completed; after the leveling and alignment are completed, the workpiece is clamped as required, and after the clamping is completed, the assembly consisting of the workpiece and the workbench is hoisted on the machine tool workbench. The machine tool workbench is pre-installed with a positioning part similar to the centering component, and after rapid positioning and clamping, the machine tool starts cutting processing.

[0049] The present invention solves the problem of long-term shutdown of the vertical lathe in the online clamping, leveling and alignment process. The machine is put into use through offline clamping, leveling and alignment. The process is completed "offline" instead of "online", which improves the machine tool start-up rate, greatly guarantees the smooth operation of production and the comprehensive utilization efficiency of the machine tool, and solves the problem of machine shutdown caused by online clamping, leveling and alignment in the process.

[0050] By using this offline fixture positioning device, the process is pre-placed from "online" to "offline", which effectively avoids the downtime and waiting for online fixture installation, and greatly ensures the smooth operation of production and the comprehensive utilization efficiency of machine tools.

[0051] The offline clamping, leveling and alignment platform described in the present invention, after the workpiece is leveled and aligned, places the workbench and the workpiece as a whole on a rotating workbench with a centering device, thereby completing online clamping and leveling and alignment, successfully solving the problem of machine tool shutdown caused by online clamping, leveling and alignment affecting processing efficiency.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A positioning device, characterized in that: The positioning device includes a supporting part, a rotating part and a leveling part. The rotating part is located between the supporting part and the leveling part. The leveling part can be rotated through the rotating part. The leveling part is composed of a rowing rod, a rowing needle, a supporting rod and a rotating assembly. One end of the support rod is fixedly connected to the rotating part, and the other end is movably connected to the rowing rod through the rotating assembly. The rowing rod can rotate around the rotating assembly. The rowing needle is movably connected to one end of the rowing rod, and the rowing needle can rotate around the connection point with the rowing rod.

2. The positioning device according to claim 1, characterized in that: The rotating part comprises a rotating member, a centering wheel assembly and a rotating circle. The rotating member is arranged between the supporting part and the rotating circle. The centering wheel assembly is used to movably connect the rotating circle with the supporting part.

3. The positioning device according to claim 1, characterized in that: The support portion comprises a support frame and a centering component, and the centering component is coaxially arranged with the support frame.

4. The positioning device according to claim 3, characterized in that: The centering assembly includes a shaft cover, a centering shaft, an elastic member, a shaft ring, and a limiting plate. The shaft ring is nested and linked with the centering shaft. The elastic member is arranged between the shaft cover and the shaft ring. The limiting plate is arranged at one end of the shaft ring away from the shaft cover.

5. The positioning device according to claim 1, characterized in that: The support frame comprises a plurality of support columns, a support seat and a fixing ring. The plurality of support columns are welded to the support seat, and the fixing ring is fixedly connected to the support columns.

6. The positioning device according to claim 1, characterized in that: The support rod is provided with a T-shaped slot, and the rotating assembly can slide up and down along the support rod.

7. The positioning device according to claim 1, characterized in that: The rotating assembly includes a rotating member and a sliding member, and the rotating member can rotate around the sliding member.

8. The positioning device according to claim 1, characterized in that: The stroke needle is connected to the stroke rod movable part, and a limiting structure is arranged on the movable part, and the limiting structure can fix the angle of the stroke rod.

9. The positioning device according to claim 1, characterized in that: A fixing structure is arranged on the rotating assembly, and the fixing structure can limit the angle of the rowing rod.

10. A leveling method for a positioning device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, a workpiece is placed on a workbench, the workbench is arranged on the rotating part, and the height and angle of the leveling part are adjusted according to the height of the workpiece; S2: rotating the rotating part to verify the vertical line of the workpiece in the height direction, and adjusting the height position of the workpiece according to the verification result so that the workpieces are on the same height plane; S3: verifying the radial end face impact point of the workpiece, and radially adjusting the workpiece until the distance between the marking needle and the end face impact point is the same, thereby completing the alignment of the workpiece; S4: After the leveling and alignment of the workpiece are completed, the workpiece is clamped on the workbench and waits for subsequent machine tool processing.

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