Clamping fixture for turning iron core

Abstract

The utility model relates to the technical field of moulds for turning, in particular to a mould for turning an iron core, which comprises a shaft body, an ejector pin seat, a fixing bolt, a fixing bolt, a connecting plate, a pressing plate seat, a reinforcing rib, a pressing plate, a positioning pin and an inner hexagonal screw, the shaft body, the connecting plate, the pressing plate seat and the reinforcing ribs are welded to form the clamping fixture body in a full-length welding connection mode, the strength of the whole structure of the clamping fixture is improved, the contact area of the pressing plate seat and the pressing plate is larger through the additionally arranged pressing plate seat, the pressing plate seat and the pressing plate are in tighter contact, and the positioning pin and the inner hexagon screw used for connection are larger, so that the clamping fixture is convenient to use. The whole structure of the mould is firmer, not prone to deformation and capable of being used for a long time, the ejector pin seat and the pressing plate of the mould are designed to be of a detachable and replaceable structure, the pressing plate and the ejector pin seat which are quick-wear parts are convenient to replace and maintain, quick repair of the mould is facilitated, the maintenance cost and time are greatly saved, the maintenance efficiency is improved, and the service life of the mould is prolonged. And the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a jig for turning and belongs to the technical field of jigs for turning, in particular to a jig for turning a core. BACKGROUND

[0002] The jig for turning a core is a special tooling device for fixing, positioning and supporting a motor core (such as a stator core), and its core function is to ensure the geometric precision of the core during turning, lamination and riveting and to reduce the risk of deformation.

[0003] At present, the overall structural strength of the existing turning jig is poor, the contact area between the pressing plate and the connecting plate is too small, the overall structure is unstable and prone to deformation, and due to high-frequency use in large quantities, the jig is inevitably subject to wear. The existing jig is relatively cumbersome to repair after wear and tear and is not convenient for quick repair. In addition, the center of the ejector pin hole is exposed and a threaded hole is punched as a lifting hole, which reduces the contact area between the ejector pin hole cone and the lathe ejector pin cone. During lifting, the deformation of the threaded hole also affects the contact of the ejector pin cone, which has an adverse effect on the concentricity of turning and affects the machining precision.

[0004] Based on this, the utility model designs a jig for turning a core to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a jig for turning a core.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a jig for turning a core, comprising a shaft body, an ejector pin seat, a fixing bolt, a connecting plate, a pressing plate seat, a reinforcing rib, a pressing plate, a positioning pin and an internal hexagonal screw, the two ends of the shaft body are fixedly installed with the ejector pin seat through four fixing bolts, a ejector pin hole is formed in the center of the end face of the ejector pin seat, four connecting plates are fixedly connected to the shaft body in the axial direction, the outer side of the connecting plate is fixedly connected with the pressing plate seat through welding, eight reinforcing ribs are symmetrically welded between the shaft body, the connecting plate and the pressing plate seat, and the outer side of the pressing plate seat is provided with a pressing plate.

[0007] As a preferred technical scheme of the utility model, the reinforcing rib is fixedly welded by full welding at the contact position with the shaft body, the connecting plate and the pressing plate seat.

[0008] As a preferred technical scheme of the utility model, an inward groove is formed on the end face of the ejector pin seat, the depth of the groove is 3mm, and the ejector pin hole is formed in the center of the groove on the end face of the ejector pin seat.

[0009] As a preferred technical scheme of the utility model, one end of four connecting plates is provided with a lifting hole, and the end provided with the lifting hole is arranged on the same side.

[0010] As a preferred technical scheme of the utility model, the lower end of the pressing plate seat is provided with a lower connecting groove, and the upper end of the pressing plate seat is provided with an upper connecting groove.

[0011] As a preferred technical scheme of the utility model, the pressing plate seat is welded and fixed after being clamped with the outer side of the connecting plate through the lower connecting groove, and the pressing plate seat and the connecting plate are also welded and fixed in a full welding manner.

[0012] As a preferred technical scheme of the utility model, the upper connecting groove of the upper end of the pressing plate seat is placed with a pressing plate, and the pressing plate and the pressing plate seat are connected and fixed through a plurality of positioning pins and internal hexagonal screws.

[0013] As a preferred technical scheme of the utility model, the pressing plate is provided with an arc surface, the symmetrical surface of the arc surface is a plane, and the symmetrical surface of the arc surface is arranged in the upper connecting groove.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1、The shaft body, the connecting plate, the pressing plate seat and the reinforcing rib in the utility model are welded to constitute the jig body in a full welding connection mode, the strength of the overall structure of the jig is improved, the contact area of the pressing plate seat and the pressing plate is larger through the increased pressing plate seat, the contact is more compact, the positioning pin and the internal hexagonal screw used in connection are larger, the overall structure of the jig is more firm, is not easy to deform, can be used for a long time, the damaged part pressing plate and the thimble are convenient to replace and maintain through the design of the thimble and the pressing plate as detachable and replaceable structures, the jig is convenient to repair quickly, the cost and time of maintenance are greatly saved, the efficiency of maintenance is improved, and the utility model has good practicability.

[0016] 2、The lifting hole of the jig is moved from the original shaft end thimble hole to the connecting plate in the utility model, on one hand, the contact area of the lathe thimble and the thimble hole is increased, and on the other hand, the influence of the deformation of the lifting hole on the thimble hole is avoided, the thimble hole has a certain hardness through the T steel made of quenching and tempering treatment of the thimble, is more wear-resistant, the precision is ensured to be stable, the end face of the thimble is processed to be concave by 3mm, and the thimble hole is processed to make the thimble hole protection cone in the concave surface, so that the damage of the thimble hole in the whole jig in the process of transportation and loading and unloading is avoided, the damage to the precision of the jig is avoided, and the precision of the jig is kept stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0018] Figure 1 It is an overall front view structural schematic diagram of the present application;

[0019] Figure 2 It is an overall side view structural schematic diagram of the present application;

[0020] Figure 3 It is an overall partial sectional view structural schematic diagram of the present application;

[0021] Figure 4 It is an overall partial sectional view structural schematic diagram of the present application;

[0022] Figure 5 It is an overall side view structural schematic diagram of the present application;

[0023] Figure 6 It is an overall side view structural schematic diagram of the present application;

[0024] Figure 7 It is an overall side view structural schematic diagram of the present application;

[0025] Figure 8 It is an overall side view structural schematic diagram of the present application.

[0026] In the drawings: 1, shaft body; 2, thimble base; 201, thimble hole; 3, fixed bolt; 4, connecting plate; 401, hoisting hole; 5, pressing plate base; 501, lower connecting groove; 502, upper connecting groove; 6, reinforcing rib; 7, pressing plate; 701, arc surface; 8, positioning pin; 9, internal hexagonal screw. DETAILED DESCRIPTION

[0027] The present application will be described below with reference to the accompanying drawings of the embodiments of the present application. Figures 1-8 The technical solutions in the embodiments of the present application are described clearly and completely, obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] EMBODIMENT

[0029] Please refer to Figures 1-8The utility model provides the following technical scheme: A kind of jig for iron core vehicle processing, including shaft body 1, thimble seat 2, fixed bolt 3, fixed bolt 3, connecting plate 4, pressing plate seat 5, reinforcing rib 6, pressing plate 7, positioning pin 8 and internal hexagon screw 9, both ends of shaft body 1 are fixedly installed with thimble seat 2 by four fixed bolts 3, and thimble seat 2 end face is provided with thimble hole 201 in the center, four connecting plates 4 are fixedly connected with pressing plate seat 5 by welding on the outside of connecting plate 4, eight reinforcing ribs 6 are symmetrically welded between shaft body 1, connecting plate 4 and pressing plate seat 5, and pressing plate 7 is provided on the outside of pressing plate seat 5.

[0030] Reinforcing rib 6 is fixed by welding in the mode of full welding at the contact with shaft body 1, connecting plate 4 and pressing plate seat 5.

[0031] The end face of thimble seat 2 is machined with inward recess, and the depth of recess is 3mm, and thimble hole 201 is provided at the center of recess of thimble seat 2 end face.

[0032] When thimble seat 2 is seriously worn, the thimble seat 2 can be directly replaced by the detachable thimble seat 2 designed, greatly shorten the jig repair time, and the full welding of shaft body 1, fixed bolt 3, connecting plate 4, pressing plate seat 5 and reinforcing rib 6 makes the overall structure of jig more firm and not easy to deform, and the inward recess on the end face of thimble seat 2 can protect thimble hole 201 during transportation and loading and unloading.

[0033] One end of four connecting plates 4 is provided with lifting hole 401, and the end provided with lifting hole 401 is arranged on the same side.

[0034] Lower end of pressing plate seat 5 is provided with lower connecting groove 501, and upper end of pressing plate seat 5 is provided with upper connecting groove 502.

[0035] Pressing plate seat 5 is fixed by welding after being clamped with the outside of connecting plate 4 through lower connecting groove 501, and full welding is used to fix pressing plate seat 5 and connecting plate 4.

[0036] Pressing plate 7 is placed in upper connecting groove 502 of upper end of pressing plate seat 5, and pressing plate 7 and pressing plate seat 5 are connected and fixed by multiple positioning pins 8 and internal hexagon screws 9.

[0037] Arc surface 701 is arranged on pressing plate 7, the symmetry plane of arc surface 701 is plane, and the symmetry plane of arc surface 701 is arranged in upper connecting groove 502.

[0038] By placing the pressing plate 7 fixedly in the upper connecting groove 502 of the pressing plate seat 5, the contact area of the pressing plate 7 and the pressing plate seat 5 is increased, the contact is more closely, the positioning pin 8 and the internal hexagonal screw 9 are used more, the overall structure of the connection is more firm, and through the detachable structure design, the later maintenance and replacement are facilitated.

[0039] The working principle and use process of the utility model are as follows: in specific use, four lifting ring screws are respectively screwed into the lifting holes 401 on the four connecting plates 4, then the lifting hooks are sleeved, the tire tool is lifted, the tire tool is sleeved into the iron core, the vertically placed tire tool with the iron core is placed flat through the overturning equipment, then the horizontal lathe is lifted, the tire tool can be clamped and installed according to the normal process, production is carried out, when the surface of the pressing plate 7 of the tire tool is bumped and the local size of the tire tool is out of tolerance, the pressing plate can not be disassembled, the bumped part of the pressing plate 7 is locally filled, then turning processing is carried out, the precision is repaired, when the surface of the pressing plate 7 of the tire tool is bumped seriously and cannot be repaired or is seriously worn, the size of the tire tool is reduced, the positioning pin 8 and the internal hexagonal screw 9 can be disassembled, the pressing plate 7 is disassembled from the pressing plate seat 5, replacement is carried out, when the thimble hole 201 on the thimble seat 2 is bumped and deformed or is seriously worn, the accuracy is affected, the thimble seat 2 can be directly disassembled and replaced, the tire tool is quickly repaired.

[0040] Finally, it should be noted that: the above only for preferred embodiments of the utility model have described, and do not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A jig for machining a core, characterized by comprising: a jig body; a core holder; a core positioning mechanism; and a core positioning mechanism drive mechanism. The utility model provides a kind of needle holder, including shaft body (1), ejector pin seat (2), fixed bolt (3), connecting plate (4), pressing plate seat (5), reinforcing rib (6), pressing plate (7), positioning pin (8) and internal hexagon screw (9), both ends of the shaft body (1) are fixedly installed with ejector pin seat (2) by four fixed bolts (3), the center of the end surface of the ejector pin seat (2) is provided with ejector pin hole (201), the shaft body (1) is welded and fixed with four connecting plates (4) along the axial direction, the outer side of the connecting plate (4) is welded and fixedly connected with pressing plate seat (5), the shaft body (1), connecting plate (4) and pressing plate seat (5) are symmetrically welded with eight reinforcing ribs (6), the outer side of the pressing plate seat (5) is provided with pressing plate (7).

2. A jig for machining a core according to claim 1, characterized in that: The reinforcing rib (6) is welded and fixed by full welding at the contact with the shaft body (1), the connecting plate (4) and the pressing plate seat (5).

3. The jig for machining a core according to claim 1, characterized in that: The end surface of the ejector pin seat (2) is machined with an inward groove, and the depth of the groove is 3mm, and the ejector pin hole (201) is provided at the center of the end surface groove of the ejector pin seat (2).

4. The jig for machining a core according to claim 1, characterized in that: One end of the four connecting plates (4) is provided with a lifting hole (401), and the end provided with the lifting hole (401) is arranged on the same side.

5. The jig for machining a core according to claim 1, wherein: The lower end of the pressing plate seat (5) is provided with a lower connecting groove (501), and the upper end of the pressing plate seat (5) is provided with an upper connecting groove (502).

6. The jig for machining a core according to claim 1, wherein: The pressing plate seat (5) is welded and fixed after clamping the outer side of the connecting plate (4) through the lower connecting groove (501), and the pressing plate seat (5) and the connecting plate (4) are also welded and fixed by full welding.

7. The jig for machining a core according to claim 1, wherein: The upper connecting groove (502) of the upper end of the pressing plate seat (5) is placed with the pressing plate (7), and the pressing plate (7) and the pressing plate seat (5) are connected and fixed by a plurality of positioning pins (8) and internal hexagon screws (9).

8. The jig for machining a core according to claim 1, characterized in that: The pressing plate (7) is provided with an arc surface (701), the symmetry plane of the arc surface (701) is a plane, and the symmetry plane of the arc surface (701) is arranged in the upper connecting groove (502).

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