Tool for machining slender shaft workpiece with high form and location tolerance by adopting vertical machining center

Abstract

The utility model discloses a tool for machining a slender shaft type workpiece with high form and location tolerance by adopting a vertical machining center. The tool comprises a clamp bottom plate, a clamping device and a clamping device, wherein the clamp bottom plate is arranged on a workbench of the vertical machining center; the bottom of the clamp vertical plate is mounted on the clamp bottom plate, and the clamp vertical plate extends upwards; the expansion sleeve assembly is installed on the clamp bottom plate, penetrates through a center hole of the slender shaft workpiece to be machined and is used for centering the slender shaft workpiece to be machined; the angular clamping assembly is mounted at a proper position in the middle of the clamp vertical plate, is used for clamping the slender workpiece to be machined, and is used for clamping the slender workpiece to be machined and limiting the circumferential rotation of the slender workpiece to be machined; the bottom supporting assembly and the inclined supporting assembly are installed on the upper portion of the clamp vertical plate and used for clamping the upper end of the thin and long workpiece to be machined. The utility model solves the problem that the existing equipment cannot achieve high form and position work difference when being used for processing a specific workpiece.

Description

TECHNICAL FIELD

[0001] The utility model relates to high form position tolerance slender axle kind work piece processing technical field, especially in the processing high form position tolerance slender axle kind work piece's frock of vertical machining center is adopted. BACKGROUND

[0002] At present, a kind of slender axle kind work piece is processed, in view of the existence of the shape of slender axle kind work piece installation position, its high form position tolerance requirement cannot be reached by conversion datum with process method. There is the problem of not being able to reach high form position difference using existing equipment to process specific work piece. SUMMARY

[0003] The utility model aims at solving the problem of not being able to reach high form position difference using existing equipment to process specific work piece and provides a kind of frock of vertical machining center is adopted to process high form position tolerance slender axle kind work piece.

[0004] To achieve the above-mentioned purpose, the frock of vertical machining center is adopted to process high form position tolerance slender axle kind work piece of the utility model, including:

[0005] A fixture bottom plate installed on the workbench of vertical machining center;

[0006] A fixture vertical plate is installed on the bottom of the fixture bottom plate and extends upwards;

[0007] Expansion sleeve assembly is installed on the fixture bottom plate and passes through the center hole of the slender axle work piece to be processed, and the expansion sleeve assembly is centered to the slender axle work piece to be processed;

[0008] An angular clamping assembly is installed on the middle of the fixture vertical plate at an appropriate position to clamp the slender work piece to be processed, and the angular clamping assembly clamps the slender work piece to be processed and limits the circumferential rotation of the slender work piece to be processed;

[0009] A bottom support assembly and an inclined support assembly are installed on the upper part of the fixture vertical plate to clamp the upper end of the slender work piece to be processed;

[0010] The clamping point between the angular clamping assembly and the slender axle work piece to be processed, the support point between the bottom support assembly and the slender axle work piece to be processed, and the support point between the inclined support assembly and the slender axle work piece to be processed are located on the same circumference and form a concentric circle with the outer circumference of the expansion sleeve assembly.

[0011] In one preferred embodiment of the utility model, the expansion sleeve assembly includes:

[0012] An axial tension cylinder is installed on the fixture bottom plate;

[0013] The lower end of the tension rod is drivenly connected to the tension cylinder.

[0014] A positioning mandrel is sleeved on the pull rod, and the upper end of the pull rod is penetrated by the upper end of the positioning mandrel;

[0015] An axial centering block, an axial centering spring and an axial positioning seat are sequentially sleeved on the positioning mandrel from top to bottom;

[0016] A bulging sleeve is sleeved on the upper end of the pull rod, and the pull rod drives the bulging sleeve to expand outward when being driven to move downward by the axial tensioning oil cylinder, and the pull rod drives the bulging sleeve to contract inward when being driven to move upward by the axial tensioning oil cylinder; in use, the center hole of the to-be-processed elongated shaft workpiece is sleeved on the bulging sleeve and the positioning mandrel.

[0017] In a preferred embodiment of the utility model, the axial tensioning oil cylinder is positioned and installed on the clamp base plate through a tensioning oil cylinder positioning seat.

[0018] In a preferred embodiment of the utility model, the angular clamping assembly comprises:

[0019] A radial tensioning oil cylinder is installed at an appropriate position in the middle of the clamp vertical plate;

[0020] A radial pressing block is hinged on the cylinder body of the radial tensioning oil cylinder, and the radial pressing block is further drivenly connected with the tensioning rod of the radial tensioning oil cylinder;

[0021] A radial positioning elastic block;

[0022] A radial positioning tensioning screw rod is locked at an appropriate position in the middle of the clamp vertical plate through a radial tensioning nut, the radial positioning elastic block is sleeved on the radial positioning tensioning screw rod through a radial positioning spring, and the radial positioning elastic block is limited in stroke through the radial positioning tensioning screw rod and the radial positioning spring; one end of the radial positioning spring acts on the radial positioning tensioning screw rod, and the other end acts on the radial positioning elastic block; the radial positioning elastic block cooperates with the radial pressing block to jointly clamp the to-be-processed elongated workpiece and limit the circumferential rotation of the to-be-processed elongated workpiece.

[0023] In a preferred embodiment of the utility model, a radial positioning seat and an adjusting pad are arranged between the clamp vertical plate and the radial pressing block, wherein the radial positioning seat is installed on the clamp vertical plate through the adjusting pad, and the radial positioning elastic block, the radial positioning tensioning screw rod and the radial positioning spring pass through the radial positioning seat.

[0024] In a preferred embodiment of the present invention, the bottom support assembly includes a bottom support cylinder installed on the clamp vertical plate and a bottom support head driven by the bottom support cylinder, and the oblique support assembly includes an oblique support cylinder installed on the clamp vertical plate and an oblique support head driven by the oblique support cylinder.

[0025] In a preferred embodiment of the present invention, the axial tensioning oil cylinder, the radial tensioning oil cylinder, the bottom support oil cylinder and the oblique support oil cylinder rely on the hydraulic station for oil supply, and the hydraulic station is controlled by PLC.

[0026] In a preferred embodiment of the present invention, the fixture vertical plate is installed on the workbench of the vertical machining center through a fixture support plate.

[0027] Due to the adoption of the above technical solution, the utility model solves the problem that existing equipment cannot achieve high shape and position tolerance when processing specific workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the scope of the embodiments.

[0029] Figure 1 The utility model is a structural schematic diagram of a tooling for machining slender shaft workpieces with high form and position tolerances using a vertical machining center.

[0030] Figure 2 for Figure 1 side view.

[0031] Figure 3 for Figure 2 AA cross-sectional view. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0033] See also Figures 1 to 3 The tooling shown in the figure is for machining slender shaft workpieces with high geometric tolerances using a vertical machining center, including a clamp base plate 2, a fixture support plate 3, a fixture vertical plate 4, an expansion sleeve assembly 27, an angular clamping assembly 28, a bottom support assembly 29 and an oblique support assembly 30.

[0034] The fixture base plate 1 is mounted on the workbench 1 of the vertical machining center, and the fixture vertical plate 4 is mounted on the fixture base plate 1 through the fixture support plate 3 and extends upward.

[0035] The expansion sleeve assembly 37 includes an axial tensioning cylinder 5, an axial tensioning cylinder positioning seat 6, a pull rod 8, a positioning core shaft 12, an axial centering block 11, an axial centering spring 10, an axial positioning seat 9 and an expansion sleeve 13.

[0036] The axial tensioning oil cylinder 5 is positioned and installed on the clamp base plate 2 through the tensioning oil cylinder positioning seat 6, the axial positioning seat 9 is installed on the tensioning oil cylinder positioning seat 6, the pull rod 8 is installed on the axial positioning seat 9 in a movable manner and is drivingly connected with the axial tensioning oil cylinder 5 through the pull rod connecting screw 7, the positioning mandrel 12 is movably sleeved on the pull rod 8, so that the pull rod 8 can move up and down on the positioning mandrel 12, and the upper end of the pull rod 8 passes out of the upper end of the positioning mandrel 12.

[0037] The axial centering block 11 and the axial centering spring 10 are sequentially sleeved on the positioning mandrel 12 from top to bottom, the expansion sleeve 13 is sleeved on the upper end of the pull rod 8 through the pull rod screw 14, when the pull rod 8 is driven to move downward by the axial tensioning oil cylinder 5, the expansion sleeve 13 is driven to expand outward, and when the pull rod 8 is driven to move upward by the axial tensioning oil cylinder 5, the expansion sleeve 13 is driven to contract inward; in use, the center hole of the to-be-processed elongated shaft workpiece 41 is sleeved on the expansion sleeve 13 and the positioning mandrel 12, when the expansion sleeve 13 expands outward, the center hole of the to-be-processed elongated shaft workpiece 41 is expanded, and the elongated shaft workpiece is centered.

[0038] The angular clamping assembly 28 comprises a radial tensioning oil cylinder 15, a radial pressing block 23, a radial positioning elastic block 26, a radial positioning tensioning screw 24, a radial positioning seat 19 and an adjusting pad 20; the radial tensioning oil cylinder 15 is installed on the middle of the clamp upright plate 4, the radial pressing block 23 is hinged on the cylinder body of the radial tensioning oil cylinder 15, and the radial pressing block 23 is drivingly connected with the tensioning rod of the radial tensioning oil cylinder 15. In addition, the radial positioning seat 19 and the adjusting pad 20 are arranged between the clamp upright plate 4 and the radial pressing block 23.

[0039] The radial positioning tensioning screw 24 is locked on the middle of the clamp upright plate 4 through the radial tensioning nut 23, the radial positioning elastic block 26 is sleeved on the radial positioning tensioning screw 24 through a radial positioning spring 25 and the stroke of the radial positioning elastic block 26 is limited by the radial positioning tensioning screw 24 and the radial positioning spring 25, and the radial positioning elastic block 26, the radial positioning tensioning screw 24 and the radial positioning spring 25 pass through the radial positioning seat 19.

[0040] One end of the radial positioning spring 25 acts on the radial positioning tensioning screw, and the other end acts on the radial positioning elastic block 26; the radial positioning elastic block 26 cooperates with the radial pressing block 23 to clamp the to-be-processed elongated workpiece 41 and limit the circumferential rotation of the to-be-processed elongated workpiece 41.

[0041] The bottom support assembly 29 and the oblique support assembly 30 are installed on the upper part of the fixture vertical plate 4 and used for clamping the upper end of the to-be-processed elongated workpiece 31; the clamping point between the angular clamping assembly 28 and the to-be-processed elongated shaft workpiece 31, the supporting point between the bottom support assembly 29 and the to-be-processed elongated shaft workpiece 31 and the supporting point between the oblique support assembly 30 and the to-be-processed elongated shaft workpiece 11 are located on the same circle and form a concentric circle with the outer circle of the positioning mandrel 12 in the expansion sleeve assembly 27.

[0042] The bottom support assembly 29 comprises a bottom support oil cylinder 15 installed on the fixture vertical plate 4 through the auxiliary support cylinder seat 16 and a bottom support head 17 driven by the bottom support oil cylinder 15, and the oblique support assembly 30 comprises an oblique support oil cylinder 30a installed on the fixture vertical plate 4 and an oblique support head 30b driven by the oblique support oil cylinder 30a.

[0043] The axial tension oil cylinder 5, the radial tension oil cylinder 15, the bottom support oil cylinder 39 and the oblique support oil cylinder 40 are supplied with oil by a hydraulic station controlled by a PLC.

[0044] The working principle of the utility model is as follows: after the to-be-processed elongated shaft workpiece 31 is placed into the tooling for processing the elongated shaft workpiece with high form tolerance by the vertical machining center, the first step is to coarsely position the to-be-processed elongated shaft workpiece 31 by the positioning mandrel 12, the second step is to drive the expansion sleeve 13 to expand outward by the axial tension oil cylinder 5 and the pull rod 8, and the to-be-processed elongated shaft workpiece 31 is centered by the action of the expansion sleeve 13 of the expansion sleeve assembly, the third step is that the radial tension oil cylinder 15 of the angular clamping assembly 28 starts to act, the to-be-processed elongated shaft workpiece 31 is pressed on the radial positioning spring block 26 with the pre-adjusted spring force by the radial pressing block 23, and the circumferential rotation of the to-be-processed elongated shaft workpiece 31 is controlled, the fourth step is that the bottom support assembly 29 and the oblique support assembly 30 act to press the upper end of the to-be-processed elongated shaft workpiece 31, and the center of the workpiece is always vertical. By the tooling, the elongated shaft workpiece with high form tolerance can be processed on the machining center.

[0045] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling for machining high form tolerance slender shaft workpieces with a vertical machining center, characterized in that, The utility model relates to a vertical machining center worktable clamping device, comprising: a clamping base plate installed on the worktable of the vertical machining center; a clamping vertical plate installed on the clamping base plate and extending upward; a sleeve assembly installed on the clamping base plate and passing through the center hole of the workpiece to be machined, which centers the workpiece to be machined; an angular clamping assembly installed at an appropriate position in the middle of the clamping vertical plate to clamp the workpiece to be machined, which clamps the workpiece to be machined and restricts the circumferential rotation of the workpiece to be machined; a bottom support assembly and an inclined support assembly installed on the upper part of the clamping vertical plate to clamp the upper end of the workpiece to be machined; the clamping point between the angular clamping assembly and the workpiece to be machined, the support point between the bottom support assembly and the workpiece to be machined, and the support point between the inclined support assembly and the workpiece to be machined are located on the same circumference and form a concentric circle with the outer circumference of the sleeve assembly.

2. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 1, wherein, The sleeve assembly comprises: an axial tension cylinder installed on the clamping base plate; a pull rod drivenly connected to the tension cylinder at the lower end; a positioning mandrel sleeved on the pull rod, and the upper end of the pull rod passes through the upper end of the positioning mandrel; an axial centering block, an axial centering spring, and an axial positioning seat, which are sequentially sleeved on the positioning mandrel from top to bottom; a sleeve sleeved on the upper end of the pull rod, and the pull rod drives the sleeve to expand outward when driven downward by the axial tension cylinder, and the pull rod drives the sleeve to contract inward when driven upward by the axial tension cylinder; in use, the center hole of the workpiece to be machined is sleeved on the sleeve and the positioning mandrel.

3. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 2, wherein, The axial tension cylinder is positioned and installed on the clamping base plate through a tension cylinder positioning seat.

4. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 2, wherein, The angular clamping assembly comprises: a radial tension cylinder installed at an appropriate position in the middle of the clamping vertical plate; a radial pressing block hinged on the cylinder body of the radial tension cylinder, which is also drivenly connected to the tension rod of the radial tension cylinder; a radial positioning spring block; a radial positioning tension screw locked at an appropriate position in the middle of the clamping vertical plate through a radial positioning nut, and the radial positioning spring block is sleeved on the radial positioning tension screw through a radial positioning spring and limits the stroke of the radial positioning spring block through the radial positioning tension screw and the radial positioning spring; one end of the radial positioning spring acts on the radial positioning tension screw, and the other end acts on the radial positioning spring block; the radial positioning spring block cooperates with the radial pressing block to clamp the workpiece to be machined and restrict the circumferential rotation of the workpiece to be machined.

5. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 4, wherein, A radial positioning seat and an adjusting pad are arranged between the clamping vertical plate and the radial pressing block, wherein the radial positioning seat is installed on the clamping vertical plate through the adjusting pad, and the radial positioning spring block, the radial positioning tension screw, and the radial positioning spring pass through the radial positioning seat.

6. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 5, wherein, The bottom support assembly comprises a bottom support oil cylinder mounted on the clamp upright plate and a bottom support head driven by the bottom support oil cylinder, and the oblique support assembly comprises an oblique support oil cylinder mounted on the clamp upright plate and an oblique support head driven by the oblique support oil cylinder.

7. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 6, wherein, The axial tension oil cylinder, the radial tension oil cylinder, the bottom support oil cylinder and the oblique support oil cylinder are supplied with oil by a hydraulic station, and the hydraulic station is controlled by a PLC.

8. The tooling for machining high form tolerance elongated shaft workpieces on a vertical machining center according to claim 7, wherein, The clamp upright plate is mounted on the vertical machining center workbench through a clamp support plate.

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