A rotary positioning system and positioning method thereof

Abstract

The invention discloses a rotary positioning system for positioning a turning tool, comprising a circular worktable rotatably arranged on the top, a vertical lathe center calibration base coaxially connected to the circular worktable through a clamping and fixing mechanism, a vertical lathe center calibration tray axially arranged on the top of the vertical lathe center calibration base is intermittently clamped with the vertical lathe center calibration tray, and a positioning block linearly arranged along the edge of the vertical lathe center calibration tray is connected to the top of the vertical lathe center calibration tray; compared with the prior art, the invention is composed of a circular worktable, a clamping and fixing mechanism, a vertical lathe center calibration base, a vertical lathe center calibration tray and a positioning block, and has a simple structure; and when positioning and adjusting the turning tool, the vertical lathe center calibration tray is rotated, and the vertical lathe crossbeam is moved, so that the positioning block is kept parallel to the vertical lathe crossbeam, the vertical lathe center calibration tray stops rotating, and then the vertical lathe crossbeam is moved so that the positioning block is aligned and overlapped with the tool tip of the turning tool; the positioning and adjustment process of the turning tool is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of lathe adjustment equipment, and in particular to a rotary positioning system and a positioning method thereof. Background Art

[0002] Vertical lathe is short for "vertical lathe". Vertical lathe is mainly used to process large and heavy workpieces with large diameter and short length, and workpieces that are not easy to clamp on horizontal lathes.

[0003] Vertical lathes can generally be divided into single-column and double-column types. Small vertical lathes are generally made into single-column types, and large vertical lathes are made into double-column types.

[0004] A vertical lathe is provided with a horizontally sliding crossbeam, on which a turning tool is installed for processing; before starting processing, the tip of the turning tool of the vertical lathe needs to be positioned to improve the processing accuracy of the turning tool.

[0005] The existing device for positioning and adjusting the turning tool has a complex structure, and the process of positioning and adjusting is complex. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a rotary positioning system to solve the problems in the prior art of complex structure and complicated process of positioning and adjusting the turning tool.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rotary positioning system for positioning a turning tool, comprising a circular worktable rotatably arranged on the top, on which a vertical lathe center calibration base is coaxially connected through a clamping and fixing mechanism, the top of the vertical lathe center calibration base is intermittently clamped with a vertical lathe center calibration tray axially arranged therewith, and the top of the vertical lathe center calibration tray is connected with a positioning block linearly arranged along its edge toward the center.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The rotary positioning system is composed of a circular workbench, a clamping and fixing mechanism, a vertical lathe center calibration base, a vertical lathe center calibration tray and a positioning block, and has a simple structure. When the turning tool is positioned and adjusted, the vertical lathe center calibration tray is rotated, and the vertical lathe crossbeam is moved. After the positioning block and the vertical lathe crossbeam are kept parallel, the vertical lathe center calibration tray stops rotating, and then the vertical lathe crossbeam is moved to make the positioning block and the tool tip of the turning tool align and overlap. The positioning adjustment process of the turning tool is convenient and quick.

[0010] In order to simplify the positioning and adjustment process of the turning tool of the vertical lathe and improve the accuracy of the positioning and adjustment, the present invention also adopts the following technical solution: a positioning method of a rotary positioning system, comprising the following steps:

[0011] Step 1: Connect the vertical lathe center calibration base coaxially to the rotating circular worktable through a clamping and fixing mechanism, and the coaxiality between the vertical lathe center calibration base and the circular worktable shall not exceed 0.02;

[0012] Step 2: Intermittently clamp the vertical lathe center calibration tray to the top of the vertical lathe center calibration base, so that the interval between the vertical lathe center calibration tray and the vertical lathe center calibration base is within the range of 0.1 to 0.2 mm;

[0013] Step 3: Move the vertical lathe beam and rotate the vertical lathe center calibration tray to make the vertical lathe beam parallel to the positioning block, and the parallelism does not exceed 0.01;

[0014] Step 4: Move the vertical lathe crossbeam so that the tip of the turning tool on the vertical lathe crossbeam is aligned and overlapped with the positioning block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The positioning method fixes the vertical lathe center calibration base on the circular worktable through a clamping and fixing mechanism, and then intermittently clamps the vertical lathe center calibration tray to the top of the vertical lathe center calibration base; through the coaxiality limitation of the vertical lathe center calibration base and the circular worktable and the intermittent limitation between the vertical lathe center calibration tray and the vertical lathe center calibration base, it is ensured that the coaxiality between the circular worktable, the vertical lathe center calibration base and the vertical lathe center calibration tray is high; then, by rotating the vertical lathe center calibration tray and moving the crossbeam, the vertical lathe crossbeam and the positioning block are ensured to have a sufficiently high parallelism, so as to ensure that when the vertical lathe crossbeam is moved again, the tip of the turning tool and the positioning block are quickly aligned and overlapped, so as to improve the positioning adjustment accuracy of the turning tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below through specific embodiments:

[0020] The figure marks in the drawings of the specification include: circular workbench 1, vertical lathe center calibration base 2, vertical lathe center calibration tray 3, positioning block 4, four-jaw chuck 5, annular reinforcement block 6, annular limiting portion 7, annular supporting portion 8, annular anti-retraction plate 9, and turning tool 10.

[0021] like Figure 1As shown, an embodiment of the present invention proposes a rotary positioning system for positioning a turning tool 10, comprising a circular worktable 1 rotatably arranged on the top, a vertical lathe center calibration base 2 coaxially connected to the circular worktable 1 through a clamping and fixing mechanism, a vertical lathe center calibration tray 3 axially arranged therewith is intermittently clamped on the top of the vertical lathe center calibration base 2, and a positioning block 4 linearly arranged along its edge toward the center is connected to the top of the vertical lathe center calibration tray 3.

[0022] When positioning and adjusting the turning tool 10, the vertical lathe center calibration tray 3 is rotated, and the vertical lathe crossbeam is moved to make the positioning block 4 parallel to the vertical lathe crossbeam, then the vertical lathe center calibration tray 3 stops rotating, and then the vertical lathe crossbeam is moved to make the positioning block 4 and the tool tip of the turning tool 10 align and overlap; the positioning and adjustment process of the turning tool 10 is convenient and quick.

[0023] like Figure 2 As shown, according to another embodiment of the present invention, the rotary positioning system further includes structural optimization of the vertical lathe center calibration base 2 and the vertical lathe center calibration tray 3, the vertical lathe center calibration base 2 adopted is annular, and a positioning step is provided on the top outer edge along its circumferential direction; the vertical lathe center calibration tray 3 is annular, and a matching step is provided on the bottom inner edge along its circumferential direction; the matching step is rotatably overlapped on the positioning step to connect the vertical lathe center calibration tray 3 with the vertical lathe center calibration base 2.

[0024] The structural design of the positioning step and the matching step can improve the matching degree when the vertical lathe center calibration tray 3 is connected to the vertical lathe center calibration base 2, thereby improving the coaxiality of the vertical lathe center calibration tray 3 and the vertical lathe center calibration base 2 after being connected, which facilitates improving the accuracy of the positioning adjustment of the turning tool 10.

[0025] Combination Figure 1 and Figure 2 According to another embodiment of the present invention, the rotary positioning system also includes a clamping and fixing mechanism, and the clamping and fixing mechanism used includes a four-jaw chuck 5 with a center hole in the center along its axial direction. The four-jaw chuck 5 is an existing structure. The four-jaw chuck 5 is fixedly installed on the circular workbench 1. The lower side of the inner wall of the center hole of the four-jaw chuck 5 is connected with an annular reinforcement block 6 along its circumferential direction. The top of the annular reinforcement block 6 is provided with an annular positioning groove along its circumferential direction. The bottom of the vertical lathe center calibration base 2 is integrally formed with an annular limiting portion 7 embedded in the annular positioning groove; after the vertical lathe center calibration base 2 is embedded in the center hole, it is clamped and fixed by the claws of the four-jaw chuck 5.

[0026] First, the annular limiting portion 7 is embedded in the annular positioning groove for pre-positioning, and then the four claws of the four-jaw chuck 5 are adjusted so that the four claws of the four-jaw chuck 5 can quickly clamp and fix the center calibration base 2 of the vertical lathe; the connection strength of the center calibration base 2 of the vertical lathe is improved by the coordinated connection between the annular limiting portion 7 and the annular positioning groove and the use of the four-jaw chuck 5, and after the four-jaw chuck 5 is fixed on the circular workbench 1, the installation coaxiality of the circular workbench 1 and the center calibration base 2 of the vertical lathe is further improved by the coordination between the annular limiting portion 7 and the annular positioning groove.

[0027] like Figure 2 As shown, according to another embodiment of the present invention, the rotary positioning system further includes an annular support step located outside the annular positioning groove on the top of the annular reinforcement block 6, and the bottom of the vertical lathe center calibration base 2 is integrally formed with an annular support portion 8 located outside the annular limiting portion 7, and the annular support portion 8 is against the upper annular support step.

[0028] The connection strength between the vertical lathe center calibration base 2 and the annular reinforcement block 6 is improved by the cooperation of the annular support step and the annular support portion 8, so that the vertical lathe center calibration base 2 is more stable during operation.

[0029] like Figure 2 As shown, according to another embodiment of the present invention, the rotary positioning system also includes a top outer edge of the four-jaw chuck 5 having an annular embedding groove opened along its circumferential direction, and an annular anti-retreat plate 9 is movably clamped in the annular embedding groove, and the claws of the four-jaw chuck 5 move a certain distance away from the center hole and then abut against the annular anti-retreat plate 9.

[0030] By movably embedding the annular anti-recoil plate 9 into the annular embedding groove, the claws of the four-jaw chuck 5 are prevented from moving away from the center hole, and the annular anti-recoil plate 9 is used to limit the claws from moving out of the four-jaw chuck 5; when the claws need to be moved out of the four-jaw chuck 5, the annular anti-recoil plate 9 is moved out of the annular embedding groove and the four-jaw chuck 5 can be adjusted.

[0031] When the annular anti-recoil plate 9 is movably embedded in the annular embedding groove, the annular anti-recoil plate 9 can be locked and fixed by multiple bolts to improve the connection firmness of the annular anti-recoil plate 9.

[0032] According to another embodiment of the present invention, the positioning method of the rotary positioning system comprises the following steps:

[0033] Step 1: The vertical lathe center calibration base 2 is coaxially connected to the rotating circular worktable 1 through a clamping and fixing mechanism, and the coaxiality of the vertical lathe center calibration base 2 and the circular worktable 1 does not exceed 0.02;

[0034] Step 2: intermittently clamp the vertical lathe center calibration tray 3 to the top of the vertical lathe center calibration base 2, so that the interval between the vertical lathe center calibration tray 3 and the vertical lathe center calibration base 2 is within the range of 0.1 to 0.2 mm;

[0035] Step 3, move the vertical lathe beam, rotate the vertical lathe center calibration tray 3 to make the vertical lathe beam parallel to the positioning block 4, and the parallelism does not exceed 0.01; the parallelism of the vertical lathe beam and the positioning block 4 can be detected by a dial indicator placed on the vertical lathe tool holder 10 to ensure that the parallelism is more accurate;

[0036] Step 4: Move the vertical lathe crossbeam so that the tip of the turning tool 10 on the vertical lathe crossbeam is aligned and overlapped with the positioning block 4; a feeler gauge can be used to detect whether the tip of the turning tool 10 is aligned and overlapped with the positioning block 4, so that the tip of the turning tool 10 is coaxial with the circular worktable 1 of the vertical lathe to complete the positioning adjustment of the turning tool 10.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A rotary positioning system for positioning a turning tool, comprising a circular worktable arranged to rotate on the top, characterized in that: The circular workbench is coaxially connected with a vertical lathe center calibration base through a clamping and fixing mechanism, the top of the vertical lathe center calibration base is intermittently clamped with a vertical lathe center calibration tray arranged axially therewith, and the top of the vertical lathe center calibration tray is connected with a positioning block linearly arranged along its edge toward the center; The vertical lathe center calibration base is annular, and a positioning step is provided on the outer edge of the top thereof along its circumferential direction; the vertical lathe center calibration tray is annular, and a matching step is provided on the inner edge of the bottom thereof along its circumferential direction; the matching step is rotated and overlapped on the positioning step to connect the vertical lathe center calibration tray with the vertical lathe center calibration base; The clamping and fixing mechanism comprises a four-jaw chuck with a center hole opened in the center along its axial direction, the four-jaw chuck is fixedly installed on the circular workbench, an annular reinforcement block is connected to the lower side of the inner wall of the center hole of the four-jaw chuck along its circumferential direction, an annular positioning groove is opened on the top of the annular reinforcement block along its circumferential direction, and an annular limiting portion embedded in the annular positioning groove is integrally formed at the bottom of the vertical lathe center calibration base; the vertical lathe center calibration base is embedded in the center hole and is clamped and fixed by the claws of the four-jaw chuck; The top of the annular reinforcement block is provided with an annular support step located outside the annular positioning groove, and the bottom of the vertical lathe center calibration base is integrally formed with an annular support portion located outside the annular limiting portion, and the annular support portion abuts against the upper annular support step; The top outer edge of the four-jaw chuck is provided with an annular embedding groove along its circumferential direction, and an annular anti-recoil plate is movably clamped in the annular embedding groove. The clamping jaws of the four-jaw chuck move a distance away from the center hole and then abut against the annular anti-recoil plate.

2. The positioning method of a rotary positioning system according to claim 1, characterized in that: The following steps are involved: Step 1: Connect the vertical lathe center calibration base coaxially to the rotating circular worktable through a clamping and fixing mechanism, and the coaxiality between the vertical lathe center calibration base and the circular worktable shall not exceed 0.02; Step 2: Intermittently clamp the vertical lathe center calibration tray to the top of the vertical lathe center calibration base, so that the interval between the vertical lathe center calibration tray and the vertical lathe center calibration base is within the range of 0.1 to 0.2 mm; Step 3: Move the vertical lathe beam and rotate the vertical lathe center calibration tray to make the vertical lathe beam parallel to the positioning block, and the parallelism does not exceed 0.01; Step 4: Move the vertical lathe crossbeam so that the tip of the turning tool on the vertical lathe crossbeam is aligned and overlapped with the positioning block.

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