A rotary indexing clamping device

Abstract

The utility model discloses a rotary indexing clamping device in the field of tooling and fixtures, comprising a fixed workbench, a transition plate is arranged on the fixed workbench, a cylinder is arranged vertically on the transition plate, a support plate is arranged at the extended end of the piston rod of the cylinder, a dividing plate is rotatably connected to the support plate, an upper workbench is arranged on the dividing plate, the area of ​​the upper workbench is larger than the area of ​​the dividing plate, a plurality of supporting legs are arranged on the lower side of the upper workbench, a support is arranged on the transition plate corresponding to the dividing plate, a plurality of radial positioning grooves are evenly arranged along the circumferential direction on the outer periphery of the dividing plate, a bracket is arranged on the support, a reciprocating positioning pin is arranged on the bracket, one end of the positioning pin is arranged corresponding to the positioning groove, and a handle is arranged at the other end of the positioning pin. The utility model can perform circumferential positioning of a workpiece, has high positioning accuracy and efficiency, and is easy to operate.

Description

Technical Field

[0001] The utility model belongs to the field of tooling fixtures, and particularly relates to a rotary indexing clamping device. Background Art

[0002] In the prior art, there is a clamping tool for processing rotating parts, and its patent application number is: 202220299950.9; application date: 2022.02.15; its structure includes a hydraulic chuck, and the chuck body of the hydraulic chuck is provided with a claw seat, and the chuck body of the hydraulic chuck is also circumferentially installed with a plurality of screw mounting seats, and the screw mounting seats are respectively located between adjacent claw seats, and the screw mounting seats are threadedly installed with a support screw for positioning and supporting the workpiece; the claw seat of the hydraulic chuck is detachably installed with a clamping block. This tool can be used to clamp the workpiece firmly, but its disadvantage is that when the tool is used to clamp the workpiece, it is also necessary to position the tool itself circumferentially. At present, there is no device on the market that can perform circumferential rotation positioning of the tool or the workpiece. Utility Model Content

[0003] The utility model aims to provide a rotary indexing clamping device, which can easily and conveniently perform circumferential positioning on a workpiece, has high positioning accuracy and efficiency, and is easy to operate.

[0004] The purpose of the utility model is achieved as follows: a rotary indexing clamping device comprises a fixed workbench, a transition plate is arranged on the fixed workbench, a cylinder is vertically arranged on the transition plate, a supporting plate is arranged at the protruding end of the piston rod of the cylinder, a dividing plate is rotatably connected to the supporting plate, an upper workbench is arranged on the dividing plate, the area of ​​the upper workbench is larger than the area of ​​the dividing plate, a plurality of supporting legs are arranged on the lower side of the upper workbench, a support is arranged on the transition plate corresponding to the dividing plate, a plurality of radial positioning grooves are evenly distributed along the circumferential direction on the outer periphery of the dividing plate, a bracket is arranged on the support, a reciprocating positioning pin is arranged on the bracket, one end of the positioning pin is arranged corresponding to the positioning groove, and a handle is arranged at the other end of the positioning pin.

[0005] When the utility model is working, after the air enters the lower chamber of the cylinder, the piston rod drives the supporting plate and the indexing plate to move upward by 10mm. The rotating workpiece together with the clamp can realize the positioning of four equal parts according to the process requirements. When each index is positioned, the handle is pulled outward. After the handle is rotated to the right position, the 16° conical surface at the end of the positioning pin is inserted into the corresponding positioning groove of the indexing plate, which matches the 16° inner conical groove. Under the action of the spring, there is no gap contact to complete a indexing rotation; due to the large plane bearing, the rotation is particularly light; then the vent valve of the air path of the lower chamber of the cylinder is opened. After the air is released, under the action of gravity, the originally floating parts slowly fall down, and the four supporting legs are in plane contact with the fixed workbench of the machine tool. The workpiece can be clamped by using the T-slot nut installed on the fixed workbench and the stud bolts, nuts, and pressure plates. Compared with the prior art, the beneficial effect of the utility model is that the workpiece can be easily and conveniently positioned circumferentially, with high positioning accuracy and efficiency, and easy operation. The device is installed on a press or other machine tools.

[0006] As a further improvement of the utility model, the fixed workbench is rectangular, and a plurality of T-shaped slots are arranged in parallel on the fixed workbench. The rectangular transition plate is fixed to the fixed workbench by a plurality of bolts and nuts matching the T-shaped slots.

[0007] In order to improve the installation firmness of the cylinder and the fixed workbench, the cylinder includes a circular cylinder, and a rectangular upper fixing plate and a lower fixing plate are respectively provided at the upper and lower ends of the cylinder. The four corners of the upper fixing plate are threadedly connected with a tensioning screw, and the tensioning screw passes downward through the upper fixing plate and the lower fixing plate in turn and is threadedly connected to the transition plate. A locking nut is sleeved on the upper end of the tensioning screw to tighten the upper fixing plate.

[0008] In order to realize the brisk rotation of the upper worktable and the workpiece, the axes of the supporting plate, the dividing plate and the cylinder coincide with each other, a supporting step is provided on the outer periphery of the supporting plate, a plane bearing supported on the supporting step is sleeved on the outer periphery of the supporting plate, a mounting groove is provided at the lower part of the dividing plate, and the dividing plate is mounted on the plane bearing through the mounting groove cover.

[0009] In order to ensure that the locating pin can contact the locating groove without gap, the locating groove is a 16° inner cone groove, four locating grooves are provided, and a guide hole is opened on the bracket. The guide hole includes a large diameter hole and a small diameter hole. The locating pin includes a large diameter section and a small diameter section. The large diameter section is inserted into the large diameter hole and matches therewith. The front end of the large diameter section of the locating pin extends out of the guide hole and corresponds to the locating groove setting, and the small diameter section passes through the small diameter hole and matches therewith. A handle is provided at the protruding end of the small diameter section of the locating pin, and the outer diameter of the handle is larger than the diameter of the small diameter hole. A spring is provided between the rear end of the large diameter section of the locating pin and the rear end of the large diameter hole, which is sleeved on the outer periphery of the locating pin.

[0010] As a further improvement of the present invention, the upper workbench is rectangular, and four supporting legs are provided on the lower side of the upper workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0012] Figure 2 It is the front view of the utility model.

[0013] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0014] Figure 4 It is a side view of the utility model.

[0015] Figure 5 It is a top view of the utility model.

[0016] Among them, 1 fixed workbench, 2 transition plate, 3 cylinder, 301 barrel, 302 upper fixed plate, 303 lower fixed plate, 3a piston rod, 4 supporting plate, 4a supporting step, 5 dividing plate, 5a mounting slot, 6 upper workbench, 7 supporting leg, 8 support, 9 positioning slot, 10 positioning pin, 1001 large diameter section, 1002 small diameter section, 10a handle, 11 T-slot, 12 bolt, 13 tensioning screw, 14 plane bearing, 15 guide hole, 15a large diameter hole, 15b small diameter hole, 16 spring, 17 bracket. DETAILED DESCRIPTION

[0017] like Figure 1-5 As shown, a rotary indexing clamping device comprises a fixed workbench 1, on which a transition plate 2 is arranged, the fixed workbench 1 is rectangular, and a plurality of T-shaped slots 11 are arranged in parallel on the fixed workbench 1, and the rectangular transition plate 2 is fixed to the fixed workbench 1 by a plurality of bolts 12 and nuts matching the T-shaped slots 11; a cylinder 3 is vertically arranged on the transition plate 2, and a supporting plate 4 is arranged at the extended end of the piston rod 3a of the cylinder 3, and a dividing plate 5 is rotatably connected to the supporting plate 4, and an upper workbench 6 is arranged on the dividing plate 5. The area of ​​the upper workbench 6 is larger than that of the dividing plate 5. A plurality of supporting legs 7 are arranged on the lower side of the upper workbench 6. The upper workbench 6 is rectangular. Four supporting legs 7 are arranged on the lower side of the upper workbench 6. A support 8 is arranged on the transition plate 2 corresponding to the dividing plate 5. A plurality of radial positioning grooves 9 are evenly distributed along the circumferential direction on the outer periphery of the dividing plate 5. A bracket 17 is arranged on the support 8. A reciprocating positioning pin 10 is arranged on the bracket 17. One end of the positioning pin 10 is arranged corresponding to the positioning groove 9. A handle 10a is arranged on the other end of the positioning pin 10.

[0018] In order to improve the installation firmness of the cylinder 3 and the fixed workbench 1, the cylinder 3 includes a circular cylinder 301, and the upper and lower ends of the cylinder 301 are respectively provided with a rectangular upper fixed plate 302 and a lower fixed plate 303. The four corners of the upper fixed plate 302 are all threadedly connected with a tightening screw 13, and the tightening screw 13 passes through the upper fixed plate 302 and the lower fixed plate 303 downward in sequence and is threadedly connected with the transition plate 2. The upper end of the tightening screw 13 is sleeved with a locking nut for pressing the upper fixed plate 302. In order to realize the light rotation of the upper workbench 6 and the workpiece, the axis of the support plate 4, the dividing plate 5 and the cylinder 3 coincide, the outer periphery of the support plate 4 is provided with a supporting step 4a, and the outer periphery of the support plate 4 is sleeved with a plane bearing 14 supported on the supporting step 4a, and the lower part of the dividing plate 5 is provided with a mounting groove 5a, and the dividing plate 5 is mounted on the plane bearing 14 through the mounting groove 5a.

[0019] In order to make the positioning pin 10 contact the positioning groove 9 without gap, the positioning groove 9 is a 16° inner cone groove, and there are four positioning grooves 9. The bracket 17 is provided with a guide hole 15, and the guide hole 15 includes a large diameter hole 15a and a small diameter hole 15b. The positioning pin 10 includes a large diameter section 1001 and a small diameter section 1002. The large diameter section 1001 is inserted into the large diameter hole 15a and matches it. The front end of the large diameter section 1001 of the positioning pin 10 extends out of the guide hole 15 and is set corresponding to the positioning groove 9. The small diameter section 1002 passes through the small diameter hole 15b and matches it. The extended end of the small diameter section 1002 of the positioning pin 10 is provided with a handle 10a, and the outer diameter of the handle 10a is larger than the aperture of the small diameter hole 15b. A spring 16 is provided between the rear end of the large diameter section 1001 of the positioning pin 10 and the rear end of the large diameter hole 15a, and is sleeved on the outer periphery of the positioning pin 10. The front end of the positioning pin 10 is a 16° cone surface.

[0020] When the utility model is working, after the air is taken into the lower chamber of the cylinder 3, the piston rod 3a drives the supporting plate 4 and the indexing plate 5 to move upward by 10mm, and the rotating workpiece together with the clamp can realize the positioning of four equal parts according to the process requirements. When each index is positioned, the handle 10a is pulled outward. After the rotation is in place, just release the handle 10a, and the 16° cone surface at the end of the positioning pin 10 is just inserted into the corresponding positioning groove 9 of the indexing plate 5, and it matches the 16° inner cone groove. Under the action of the spring 16, there is no gap contact, and a division rotation is completed; due to the large plane bearing 14, the rotation is particularly light; then the air release valve of the air path of the lower chamber of the cylinder 3 is opened, and after the air is released, under the action of gravity, the originally floating parts slowly fall down, and the four supporting legs 7 are in contact with the plane on the fixed workbench 1 of the machine tool, and the workpiece can be clamped by using the T-slot nut installed on the fixed workbench 1 and the stud bolt 12, nut, and pressure plate. The advantages of the utility model are: it can easily and conveniently perform circumferential positioning of the workpiece, with high positioning accuracy and efficiency, and convenient operation. The device is installed on a press or other machine tools.

[0021] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A rotary indexing clamping device, characterized in that: It includes a fixed workbench, a transition plate is arranged on the fixed workbench, a cylinder is vertically arranged on the transition plate, a supporting plate is arranged at the protruding end of the piston rod of the cylinder, a dividing plate is rotatably connected to the supporting plate, an upper workbench is arranged on the dividing plate, the area of ​​the upper workbench is larger than that of the dividing plate, a plurality of supporting legs are arranged on the lower side of the upper workbench, a support is arranged on the transition plate corresponding to the dividing plate, a plurality of radial positioning grooves are evenly distributed along the circumferential direction on the outer periphery of the dividing plate, a bracket is arranged on the support, a reciprocating positioning pin is arranged on the bracket, one end of the positioning pin is arranged corresponding to the positioning groove, and the other end of the positioning pin is provided with a handle.

2. A rotary indexing clamping device according to claim 1, characterized in that: The fixed workbench is rectangular, and a plurality of T-shaped slots are arranged in parallel on the fixed workbench. The rectangular transition plate is fixed to the fixed workbench by a plurality of bolts and nuts matching the T-shaped slots.

3. A rotary indexing clamping device according to claim 1 or 2, characterized in that: The cylinder includes a circular barrel, and a rectangular upper fixing plate and a lower fixing plate are respectively provided at the upper and lower ends of the barrel. The four corners of the upper fixing plate are threadedly connected with a tensioning screw, and the tensioning screw passes downward through the upper fixing plate and the lower fixing plate in sequence and is threadedly connected to the transition plate. A locking nut is sleeved on the upper end of the tensioning screw to tighten the upper fixing plate.

4. A rotary indexing clamping device according to claim 1 or 2, characterized in that: The axes of the support plate, dividing plate and cylinder coincide with each other, a support step is arranged on the periphery of the support plate, a plane bearing supported on the support step is sleeved on the periphery of the support plate, a mounting groove is opened at the bottom of the dividing plate, and the dividing plate is mounted on the plane bearing through the mounting groove cover.

5. A rotary indexing clamping device according to claim 4, characterized in that: The positioning groove is a 16° inner cone groove, and there are four positioning grooves. A guide hole is opened on the bracket, and the guide hole includes a large diameter hole and a small diameter hole. The positioning pin includes a large diameter section and a small diameter section. The large diameter section is inserted into the large diameter hole and matches it. The front end of the large diameter section of the positioning pin extends out of the guide hole and corresponds to the positioning groove. The small diameter section passes through the small diameter hole and matches it. A handle is provided at the protruding end of the small diameter section of the positioning pin. The outer diameter of the handle is larger than the diameter of the small diameter hole. A spring is provided between the rear end of the large diameter section of the positioning pin and the rear end of the large diameter hole. The spring is sleeved on the outer periphery of the positioning pin.

6. A rotary indexing clamping device according to claim 1 or 2, characterized in that: The upper workbench is rectangular, and four supporting legs are arranged on the lower side of the upper workbench.

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