Rotating disc type lathe tool with V-shaped block and clamping jaw combined positioning function

Abstract

The utility model discloses a rotating disc type lathe tool with combined positioning of V-shaped blocks and clamping jaws, which comprises a rotating disc type chassis mounted on a lathe chuck, a first clamping jaw, a second clamping jaw, a first V-shaped block, a second V-shaped block and a fixed supporting nail, wherein the first clamping jaw and the second clamping jaw are meshed with teeth of the lathe chuck, and the first V-shaped block and the second V-shaped block are arranged on the rotating disc type chassis. The first clamping jaw and the second clamping jaw are provided with a first clamping mechanism and a second clamping mechanism respectively, wherein the first clamping mechanism and the second clamping mechanism are used for clamping parts to be machined. A first V-shaped block, a second V-shaped block and a fixed supporting nail which are arranged on a rotating disc type chassis are used for positioning, meanwhile, a first clamping mechanism is combined with a first clamping jaw, a second clamping mechanism is combined with a second clamping jaw, the characteristics of a lathe chuck are utilized, the clamping action is completed while center positioning is achieved on a part to be machined, the part is rapidly assembled and disassembled, and the machining efficiency is improved. The clamping and positioning stability is high, and the production efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a V-shaped block and dog combined positioning's turntable lathe frock, especially a compact structure, be applicable to the V-shaped block and dog combined positioning's turntable lathe frock of processing irregular part. BACKGROUND

[0002] The utility model discloses a V-shaped block and dog combined positioning's turntable lathe frock that turns the irregular part circular plane on the horizontal lathe. Because the irregular part to be processed has no process structure surface suitable for direct positioning and clamping, needs to help with special frock to assist to complete the machining operation, but the pneumatic or hydraulic frock structure of lathe is complex, and the design cost is extremely high, therefore, the lathe frock generally sets up the positioning unit and clamping unit on the turntable type bottom plate, and the turntable type bottom plate is fixedly connected on the lathe chuck through bolt, and the clamping unit generally adopts the mechanical type clamping mechanism of manual clamping. This frock not only consumes the physical strength of operator, and the work load is larger, and the efficiency is also not high. SUMMARY

[0003] The utility model discloses a V-shaped block and dog combined positioning's turntable lathe frock, which has the characteristics of compact structure and is suitable for machining irregular parts.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a V-shaped block and dog combined positioning's turntable lathe frock, which has the following innovative points: the V-shaped block and dog combined positioning's turntable lathe frock includes a turntable type bottom plate installed on a lathe chuck, a first dog and a second dog symmetrically arranged with respect to the center of the turntable type bottom plate and engaged with the lathe chuck below the turntable type bottom plate, a first V-shaped block and a second V-shaped block symmetrically arranged with respect to the center of the turntable type bottom plate on the turntable type bottom plate, and a fixed support pin arranged on the turntable type bottom plate between the first V-shaped block and the second V-shaped block or on the side of the middle of the first V-shaped block and the second V-shaped block, wherein the first V-shaped block and the second V-shaped block are respectively located on the inner side of the first dog and the second dog, the first dog and the second dog are respectively provided with a first clamping mechanism and a second clamping mechanism for clamping a workpiece to be machined, and the workpiece to be machined is positioned by the first V-shaped block, the second V-shaped block, and the fixed support pin and placed between the first clamping mechanism and the second clamping mechanism.

[0005] Preferably, the turntable type bottom plate is in a disc shape, and a first rectangular slot and a second rectangular slot are symmetrically arranged on the turntable type bottom plate and extend through the upper and lower portions of the turntable type bottom plate, and the first dog and the second dog are respectively located in the first rectangular slot and the second rectangular slot.

[0006] A gap is reserved between the first dog and the first rectangular slot, and a gap is also reserved between the second dog and the second rectangular slot.

[0007] Preferably, the fixed support nail is a positioning block structure screwed or riveted on the rotary disc base plate, and a positioning surface is arranged on the top surface of the positioning block structure and in contact with the workpiece.

[0008] Preferably, the first V-shaped block and the second V-shaped block are identical in structure, and each of the first V-shaped block and the second V-shaped block is provided with a notch with a V-shaped opening, which is composed of an arc surface and two planar surfaces, and the workpiece is arranged on the notch.

[0009] Preferably, the first clamping mechanism and the second clamping mechanism are respectively arranged on the first pressure block mounting seat and the second pressure block mounting seat, and the first clamping mechanism and the second clamping mechanism are respectively arranged on the two sides of the workpiece.

[0010] Preferably, the first pressure block mounting seat and the second pressure block mounting seat are respectively provided with a first waist-shaped hole and a second waist-shaped hole penetrating through the top and bottom, and the first pressure block mounting seat and the second pressure block mounting seat are respectively provided with a first screw and a second screw penetrating through the first waist-shaped hole and the second waist-shaped hole and screwed into the threaded hole of the rotary disc base plate, and the first screw and the second screw are respectively in contact with the first waist-shaped hole and the second waist-shaped hole.

[0011] Preferably, the first clamping mechanism and the second clamping mechanism are identical, and each of the first clamping mechanism and the second clamping mechanism is composed of two clamping units, and the clamping unit is a tooth surface side pressure block screwed on the first pressure block mounting seat or the second pressure block mounting seat, and the surface in contact with the workpiece is a tooth surface.

[0012] The first pressure block mounting seat or the second pressure block mounting seat is provided with a wedge-shaped circular groove for placing the tooth surface side pressure block.

[0013] Preferably, the first pressure block mounting seat is provided with a counterweight error prevention block screwed on the top surface of the first pressure block mounting seat.

[0014] Preferably, the first V-shaped block and the second V-shaped block are provided with an adjustable support structure in the middle or on the side of the middle of the rotary disc base plate, and the adjustable support structure and the fixed support nail are symmetrically arranged with respect to the center of the rotary disc base plate.

[0015] Preferably, the adjustable supporting structure comprises a spring seat mounted on the rotary table base, a center hole arranged in the spring seat and coaxial with the spring seat, a spring arranged in the center hole and a supporting pin above the spring, a clamping screw threadedly connected to the side of the spring seat and arranged with a center axis perpendicular to the axis of the spring seat, and a milled flat structure arranged on the supporting pin and abutting against the clamping screw.

[0016] The utility model discloses the advantages are as follows: first V -shaped block, second V -shaped block and fixed supporting pin positioning are arranged on the rotary table base, and first clamping mechanism and first dog are combined, second clamping mechanism and second dog are combined, utilize lathe chuck's own characteristics, realize center positioning to the part to be processed and complete clamping action, realize the part quick loading and unloading, and the clamping positioning stability is high, and production efficiency and product quality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be described in further detail below in combination with the drawings and specific embodiment, for the convenience of explanation, the orientation word of "up and down", "left and right", "before and after" etc. appearing in the text all only represent the position of tooling part in the drawing of the text, and do not mean the position in actual production.

[0018] Figure 1 It is a perspective view of the rotary table lathe tooling of the utility model of V -shaped block and dog combination positioning.

[0019] Figure 2 It is a structure schematic view of the rotary table lathe tooling of the utility model of V -shaped block and dog combination positioning.

[0020] Figure 3 It is Figure 2 A-A section view.

[0021] Figure 4 It is Figure 2 B-B section view.

[0022] Figure 5 It is Figure 2 C-C section view.

[0023] Figure 6 It is Figure 2 D-D partial section view.

[0024] Figure 7 It is Figure 2 G-G partial section view.

[0025] Figure 8 It is a structure schematic view of the supporting pin in the rotary table lathe tooling of the utility model of V -shaped block and dog combination positioning.

[0026] Figure 9 is a structure schematic view of the turntable type chassis in the V-shaped block and claw combined positioning turntable type lathe tooling.

[0027] Figure 10 is a perspective view of the first claw in the V-shaped block and claw combined positioning turntable type lathe tooling.

[0028] Figure 11 is a structure schematic view of the first claw in the V-shaped block and claw combined positioning turntable type lathe tooling.

[0029] Figure 12 is a structure schematic view of the first V-shaped block in the V-shaped block and claw combined positioning turntable type lathe tooling.

[0030] Figure 13 is a structure schematic view of the first pressing block mounting seat in the V-shaped block and claw combined positioning turntable type lathe tooling.

[0031] Figure 14 is a structure schematic view of the second pressing block mounting seat in the V-shaped block and claw combined positioning turntable type lathe tooling.

[0032] In the figure: 1-turntable type chassis, 111-first rectangular groove, 112-second rectangular groove, 2-first claw, 3-second claw, 4-first V-shaped block, 5-second V-shaped block, 6-fixed supporting nail, 7-adjustable supporting structure, 71-spring seat, 72-spring, 73-supporting nail, 74-locking screw, 8-first clamping mechanism, 9-second clamping mechanism, 10-first pressing block mounting seat, 11-second pressing block mounting seat, 12-first waist-shaped hole, 13-second waist-shaped hole, 14-first screw, 15-second screw, 16-wedge-shaped circular arc groove, 17-counterweight mistake-proof block, 18-part to be processed. DETAILED DESCRIPTION

[0033] The utility model discloses a V -shaped block and dog combination positioning's turntable -type lathe frock includes the turntable -type chassis 1 of installation on the lathe chuck, with the first dog 2 and second dog 3 of the tooth engagement of lathe chuck and the symmetry of the first dog 2 and second dog 3 of the center setting of turntable -type chassis 1, the first V -shaped block 4 and second V -shaped block 5 of the center setting of turntable -type chassis 1 and the symmetry of turntable -type chassis 1, the fixed support nail 6 of setting in the first V -shaped block 4 and second V -shaped block 5 intermediate or intermediate side of turntable -type chassis 1, the first V -shaped block 4 and second V -shaped block 5 are located respectively in the inside of first dog 2 and second dog 3, and first dog 2 and second dog 3 are provided with first pressure block mounting seat 10 of installing first clamping mechanism 8 and second pressure block mounting seat 11 of installing second clamping mechanism 9 respectively, and first clamping mechanism 8 and second clamping mechanism 9 are used for clamping the part 18 to be processed, and the part 18 to be processed is positioned after first V -shaped block 4, second V -shaped block 5 and fixed support nail 6, and is placed between first clamping mechanism 8 and second clamping mechanism 9. Through the first V -shaped block 4, second V -shaped block 5 and fixed support nail 6 of setting on turntable -type chassis 1 positioning, first clamping mechanism 8 is combined with first dog 2 and second clamping mechanism 9 is combined with second dog 3 simultaneously, utilizes the characteristics of lathe chuck itself, realizes the center positioning of the part 18 to be processed and completes the clamping action. Then the height of support nail 73 is adjusted, so that the top surface contacts the part 18 to be processed under the elastic force of spring 72, then tightens fastening screw 74, and the auxiliary support of adjustable support structure 7 to the part 18 to be processed is completed. After processing, the lathe chuck is loosened, and the part 18 to be processed is removed, realizing the quick loading and unloading of the part, high clamping positioning stability, and improving production efficiency and product quality.

[0034] The above-mentioned turntable -type chassis 1 is disc structure, and the first rectangular groove 111 and the second rectangular groove 112 are symmetrically arranged on the turntable -type chassis 1, the first dog 2 and the second dog 3 are located in the first rectangular groove 111 and the second rectangular groove 112 respectively, and the first dog 2 and the second dog 3 are provided with the first rectangular groove 111 and the second rectangular groove 112 respectively.

[0035] The fixed supporting nail 6 is a positioning block structure screwed or riveted on the rotary disc type base plate 1, and a positioning surface is arranged on the top surface of the positioning block structure and in contact with the part 18 to be machined.

[0036] The first V-shaped block 4 and the second V-shaped block 5 are identical in structure, and the first V-shaped block 4 and the second V-shaped block 5 are provided with a notch with a V-shaped opening, which is composed of an arc surface and two plane surfaces, and the part 18 to be machined is located on the notch, and the two plane surfaces are positioning contact surfaces, and the arc surface is used for avoiding interference of the part to be machined with the tooling.

[0037] The first clamping jaw 2 and the second clamping jaw 3 are respectively provided with the first pressing block mounting seat 10 and the second pressing block mounting seat 11 screwed thereon, the first pressing block mounting seat 10 and the second pressing block mounting seat 11 are located above the rotary disc type base plate 1, and gaps are respectively left between the first pressing block mounting seat 10 and the second pressing block mounting seat 11 and the rotary disc type base plate 1; the first clamping mechanism 8 and the second clamping mechanism 9 are respectively mounted on the first pressing block mounting seat 10 and the second pressing block mounting seat 11, and the first clamping mechanism 8 and the second clamping mechanism 9 are respectively located on the two sides of the part 18 to be machined.

[0038] The first pressing block mounting seat 10 and the second pressing block mounting seat 11 are respectively provided with the first waist-shaped hole 12 and the second waist-shaped hole 13 penetrating through the first pressing block mounting seat 10 and the second pressing block mounting seat 11, the first pressing block mounting seat 10 and the second pressing block mounting seat 11 are respectively provided with the first screw 14 and the second screw 15 penetrating through the first waist-shaped hole 12 and the second waist-shaped hole 13 and screwed into the threaded holes on the rotary disc type base plate, and the first screw 14 and the second screw 15 are respectively not in contact with the first waist-shaped hole 12 and the second waist-shaped hole 13. The lower end surfaces of the first pressing block mounting seat 10 and the second pressing block mounting seat 11 are not in contact with the rotary disc. When the first clamping jaw 2 and the second clamping jaw 3 mounted on the lathe chuck drive the first pressing block mounting seat 10 and the second pressing block mounting seat 11 to move along the radial direction of the rotary disc type base plate, the first screw 14 and the second screw 15 relatively move in the first waist-shaped hole 12 and the second waist-shaped hole 13. The waist-shaped hole and the screw structure are used for ensuring that the tooling will not lose parts during storage and transfer.

[0039] The first V-shaped block 4, the second V-shaped block 5 and the fixed supporting nail 6 together position the workpiece 18 to be processed, and only the movement freedom degree in the X-axis direction has not been limited, so that the first clamping mechanism 8 and the second clamping mechanism 9 are used to limit the movement freedom degree in the X-axis direction. The first clamping mechanism 8 and the second clamping mechanism 9 of the utility model are same, the first clamping mechanism 8 and the second clamping mechanism 9 are all composed of two clamping units, the clamping unit is the tooth surface side pressing block that is screw connected on the first pressing block mounting seat 10 or the second pressing block mounting seat 11, and the surface of the tooth surface side pressing block that contacts the workpiece 18 to be processed is the tooth surface; the first pressing block mounting seat 10 or the second pressing block mounting seat 11 is provided with the wedge-shaped circular arc groove 16 for the tooth surface side pressing block to be placed. The positioning and clamping surface of the workpiece 18 to be processed in the X-axis direction is the forging blank surface, in order to ensure the accuracy of positioning and the reliability of clamping, the tooth surface side pressing block is used to position and clamp. The tooth surface side pressing block is fastened and connected in the wedge-shaped circular arc groove 16 on the corresponding pressing block mounting seat using M4 screw. During installation, first, the tooth surface of the first clamping jaw 2 and the second clamping jaw 3 is engaged with the teeth on the threaded surface of the lathe chuck, and then the first clamping jaw 2 and the second clamping jaw 3 are fastened and connected on the lathe chuck using screws, and finally the first pressing block mounting seat 10 and the second pressing block mounting seat 11 are fastened and connected on the front end top surface of the first clamping jaw 2 and the second clamping jaw 3 using screws.

[0040] The first pressing block mounting seat 10 of the utility model is provided with the counterweight error prevention block 17 that is screw connected on the top surface of the first pressing block mounting seat 10. Since the rotation center of the circular plane of the workpiece to be processed coincides with the geometric center of the rotating disc in the XOY plane, but does not coincide with the axis of the V-shaped block positioning in the Y-axis direction, and there is a distance of 2mm. Therefore, there is a clear requirement for the direction of the workpiece 18 to be processed during positioning and clamping, and the first pressing block mounting seat 10 and the second pressing block mounting seat 11 are distinguished as left and right. If the positioning direction of the workpiece 18 to be processed is incorrect, the process lug on the workpiece will interfere with the counterweight error prevention block 17, so that the workpiece cannot be installed in the tooling. After the workpiece is installed in the tooling in the correct direction, and it is ensured that the positioning surface of the workpiece is in good contact with the positioning surface of the first V-shaped block 4, the second V-shaped block 5 and the fixed supporting nail 6, the lathe chuck is started, the first clamping jaw 2 and the second clamping jaw 3 simultaneously push the workpiece 18 to be processed towards the center of the chuck, so that the position of the rotation center of the circular plane of the workpiece to be processed in the X-axis direction coincides with the rotation center of the tooling rotating disc type bottom plate, and the workpiece is clamped while positioning is completed. Since the workpiece shape and the tooling structure are not symmetrical, the centrifugal force and centrifugal couple generated by the large cylindrical structure of the counterweight error prevention block 17 and the lower segment of the fixed supporting nail 6 can offset the unbalance generated by the process lug on the workpiece and the adjustable supporting structure 7 of the tooling, reduce the transverse vibration, and make the overall mechanism composed of the tooling and the workpiece more stable when rotating around the Z-axis.

[0041] The adjustable supporting structure 7 and the fixed supporting nail 6 are symmetrically arranged at the center of the rotary disc type chassis 1. The adjustable supporting structure 7 comprises a spring seat 71 mounted on the rotary disc type chassis 1, a center hole coaxially arranged in the spring seat 71, a spring 72 arranged in the center hole and a supporting nail 73 located above the spring 72, and a clamping screw 74 threadedly connected to the side surface of the spring seat 71 and arranged with a center axis perpendicular to the axis of the spring seat.

[0042] When clamping, after ensuring that the to-be-processed part 18 is positioned and clamped, the height of the top surface of the adjustable supporting nail 73 is adjusted according to the position of the actual supporting surface of the to-be-processed part 18 in the negative direction of the Y axis, and after ensuring that the top surface of the adjustable supporting nail 73 is in contact with the to-be-processed part 18, the clamping screw 74 is locked. The adjustable supporting structure 7 does not participate in the positioning of the to-be-processed part 18, and serves as an auxiliary support to increase the rigidity and stability of the tooling, and also avoids plastic deformation of the to-be-processed part 18 due to over-positioning.

[0043] The above embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A V-block and dog combination positioning jig for a rotary table lathe, characterised in that: The V-shaped block and claw combined positioning rotary table lathe tooling comprises a rotary table chassis mounted on a lathe chuck, a first claw and a second claw symmetrically arranged with the lathe chuck teeth below the rotary table chassis, a first V-shaped block and a second V-shaped block symmetrically arranged on the rotary table chassis, and a fixed supporting nail arranged on the rotary table chassis between or on the side of the first V-shaped block and the second V-shaped block, wherein the first V-shaped block and the second V-shaped block are respectively located on the inner side of the first claw and the second claw, the first claw and the second claw are respectively provided with a first clamping mechanism and a second clamping mechanism for clamping the parts to be processed, and the parts to be processed are positioned between the first clamping mechanism and the second clamping mechanism through the first V-shaped block, the second V-shaped block and the fixed supporting nail.

2. A V-block and dog combination indexed turntable fixture as claimed in claim 1 wherein: The rotary table chassis is a disc structure, and the rotary table chassis is symmetrically provided with a first rectangular groove and a second rectangular groove penetrating from top to bottom, and the first claw and the second claw are respectively located in the first rectangular groove and the second rectangular groove. Gaps are reserved between the first claw and the first rectangular groove and between the second claw and the second rectangular groove.

3. A V-block and dog combination indexed turntable fixture as claimed in claim 1 wherein: The fixed supporting nail is a positioning block structure screwed or riveted on the rotary table chassis, and the positioning block structure is provided with a positioning surface located on the top surface of the positioning block structure and in contact with the parts to be processed.

4. A V-block and dog combination indexed turntable fixture as claimed in claim 1 wherein: The first V-shaped block and the second V-shaped block are the same structure, and the first V-shaped block and the second V-shaped block are respectively provided with a notch with a V-shaped opening, which is composed of an arc surface and two plane surfaces, and the parts to be processed are located on the notch.

5. A V-block and dog combination indexed turntable fixture as claimed in claim 1 wherein: The first claw and the second claw are respectively screw-mounted with a first pressing block mounting seat and a second pressing block mounting seat, the first pressing block mounting seat and the second pressing block mounting seat are located above the rotary table chassis, and gaps are reserved between the first pressing block mounting seat and the second pressing block mounting seat and the rotary table chassis; the first clamping mechanism and the second clamping mechanism are respectively mounted on the first pressing block mounting seat and the second pressing block mounting seat, and the first clamping mechanism and the second clamping mechanism are respectively located on the two sides of the parts to be processed.

6. A V-block and dog combination indexed turntable fixture as claimed in claim 5 wherein: The first pressing block mounting seat and the second pressing block mounting seat are respectively provided with a first waist-shaped hole and a second waist-shaped hole penetrating from top to bottom, and the first pressing block mounting seat and the second pressing block mounting seat are respectively provided with a first screw and a second screw penetrating through the first waist-shaped hole and the second waist-shaped hole and screwed into the threaded holes on the rotary table bottom plate, and the first screw and the second screw are respectively in contact with the first waist-shaped hole and the second waist-shaped hole.

7. A V-block and dog combination indexed turntable fixture as claimed in claim 5 wherein: The first clamping mechanism and the second clamping mechanism are the same, and each of the first clamping mechanism and the second clamping mechanism comprises two clamping units, which are tooth surface side pressing blocks screw-connected to the first pressing block mounting seat or the second pressing block mounting seat, and the surface of the tooth surface side pressing block in contact with the parts to be processed is a tooth-shaped surface. The first pressing block mounting seat or the second pressing block mounting seat is provided with a wedge-shaped circular arc groove for placing the tooth surface side pressing block.

8. A V-block and dog combination located turntable type lathe tool as claimed in claim 7 wherein: The first pressing block mounting seat is provided with a counterweight anti-blocking block connected to the top surface of the first pressing block mounting seat by screws.

9. A V-block and dog combination indexed turntable fixture as claimed in claim 1 wherein: The adjustable supporting structure is arranged symmetrically to the center of the rotary disc type chassis with the fixed supporting nails.

10. A V-block and dog combination indexed turntable fixture as claimed in claim 9 wherein: The adjustable supporting structure comprises a spring seat mounted on the rotary disc type chassis, a center hole arranged coaxially in the spring seat, a spring arranged in the center hole, a supporting nail above the spring, and a clamping screw threadedly connected to the side surface of the spring seat with the center axis arranged perpendicularly to the axis of the spring seat.

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