Multi-piece machining tool for medical instruments

Abstract

The utility model relates to a multi-piece machining tool for medical instruments, which belongs to the technical field of medical instrument tools and comprises a tool body, a blank is inserted into the tool body, and the tool body comprises a clamping handle, a neck portion and a positioning portion which are arranged in a step shape. Rotary central shafts of the clamping handle, the neck part and the positioning part are coaxially arranged; the circumferential overall dimensions of the clamping handle, the neck part and the positioning part are sequentially reduced in a grading manner in the axial direction; a limiting plane for circumferentially positioning the blank is arranged on the side surface of the positioning part; and a limiting hole for axially positioning the blank is formed in the end part of the positioning part. The tool is used in cooperation with a four-axis machine tool, and the machining cost of equipment is reduced; by means of the flexibility of the tool and the four-axis machine tool, a plurality of L-shaped workpieces can be machined without secondary clamping of the blank, the machining steps are simplified, the machining cost is reduced, and the machining efficiency and precision are both improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of medical instrument multi-piece processing tool, belong to medical instrument tooling technical field. BACKGROUND

[0002] At present, according to the demand of clinical medical instrument, people develop a kind of L-shaped instrument. For the surface structure complex L-shaped instrument, the traditional method is to use five-axis machining center to process. Specific operation is as follows: operator first clamps square blank on the flat tongs of machine tool, completes the processing of one side, then removes blank, re-adjusts direction and clamps again to process the other side.

[0003] However, the above process has the following shortcomings:

[0004] On the one hand, blank needs to be clamped twice to complete the processing of all external structures, and the process is complicated, and each time re-clamping needs to be repositioned, which can easily lead to increased dimensional error.

[0005] On the other hand: repeated clamping not only prolongs the processing time, but also further reduces the processing efficiency and increases the overall processing cost due to the high cost of five-axis machining center itself. INVENTION CONTENTS

[0006] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a kind of medical instrument multi-piece processing tool, simplify the processing technology of L-shaped instrument, improve its processing efficiency and precision, and reduce its processing cost.

[0007] The utility model relates to a kind of medical instrument multi-piece processing tool, including: blank is inserted on tooling main body, tooling main body includes: the clamping handle of setting in ladder shape, neck and positioning part;

[0008] The rotational center axis of the clamping handle, neck and positioning part is coaxially arranged;

[0009] The circumferential contour size of the clamping handle, neck and positioning part is sequentially graded and reduced along axial direction;

[0010] The side surface of the positioning part is provided with a limiting plane for circumferential positioning of blank;The end of positioning part is provided with a limiting hole for axial positioning of blank.

[0011] Further, the process hole matched with the outer contour of positioning part is provided on blank, and positioning part is inserted into process hole.

[0012] Further, the neck is between the clamping handle and blank, and the step surface of the clamping handle and the end surface of the blank form an empty slot by the neck.

[0013] Further, the limiting hole is arranged in pairs.

[0014] Further, the jig body is also matched with a clamping screw;

[0015] The clamping screw is matched with the blank and arranged into the limiting hole, and the blank is fixed on the jig body by the clamping screw in the axial direction.

[0016] Further, the rotation center axis of the blank is coaxially arranged with the rotation center axis of the jig body.

[0017] The utility model has the beneficial effects compared with the prior art:

[0018] On the one hand, the jig is matched with the four-axis machine tool, the processing cost of equipment is reduced, on the other hand, with the flexibility of the jig and the four-axis machine tool, the blank can be processed without secondary clamping, the processing steps are simplified, the processing cost is reduced, and the processing efficiency and precision are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a jig body structure schematic view of a medical instrument multi-piece processing jig of the utility model;

[0020] Figure 2 It is a combination structure schematic view of a medical instrument multi-piece processing jig and a blank of the utility model;

[0021] Figure 3 It is a forming structure schematic view of a blank and an L-shaped workpiece of a medical instrument multi-piece processing jig of the utility model;

[0022] Figure 4 It is a blank structure schematic view of a medical instrument multi-piece processing jig of the utility model;

[0023] Figure 5 It is a sectional structure schematic view of a medical instrument multi-piece processing jig and a blank of the utility model;

[0024] Figure 6 It is a blank processing schematic view of a medical instrument multi-piece processing jig of the utility model.

[0025] In the drawing:

[0026] 1, clamping handle;

[0027] 2, neck;

[0028] 3, positioning part;

[0029] 4, limiting plane;

[0030] 5, limiting hole;

[0031] 6, clamping screw;

[0032] 7, blank; 701, process hole;

[0033] 8, avoidance slot;

[0034] 9, chuck;

[0035] 10, main shaft. DETAILED DESCRIPTION

[0036] As Figures 1-6 shown, the embodiment is implemented by the following technical solutions: the blank 7 is inserted on the tool body, and the tool body comprises: a clamping handle 1, a neck 2 and a positioning part 3 arranged in a stepped manner.

[0037] The three rotation center axes of the clamping handle 1, the neck 2 and the positioning part 3 are coaxially arranged.

[0038] The circumferential contour sizes of the clamping handle 1, the neck 2 and the positioning part 3 are sequentially and axially reduced in stages.

[0039] The side surface of the positioning part 3 is provided with a limiting plane 4 for circumferential positioning of the blank 7; and the end part of the positioning part 3 is provided with a limiting hole 5 for axial positioning of the blank 7.

[0040] Specifically, the blank 7 is provided with a process hole 701 matched with the outer contour of the positioning part 3, and the positioning part 3 is inserted into the process hole 701.

[0041] Specifically, the neck 2 is interposed between the clamping handle 1 and the blank 7, and the step surface of the clamping handle 1 and the end surface of the blank 7 are separated by the neck 2 to form an avoidance slot 8.

[0042] Specifically, the limiting holes 5 are arranged in pairs.

[0043] Specifically, the tool body is further provided with a clamping screw 6 in cooperation.

[0044] The clamping screw 6 is arranged into the limiting hole 5 in cooperation through the blank 7, and the blank 7 is axially fixed on the tool body by the clamping screw 6.

[0045] Specifically, the rotation center axis of the blank 7 is coaxially arranged with the rotation center axis of the tool body.

[0046] In the embodiment, the tool body is clamped to a four-axis machining center for use, the type of the four-axis machining center is a horizontal four-axis machining center, and the tool body and the blank can rotate along the A axis; as Figure 6 shown.

[0047] The specific use principle of the utility model is as follows:

[0048] During product processing, the blank 7 is inserted into the tool main body, the operator rotates the clamping screw 6 to fix the blank to the tool, further, the clamping handle 1 of the tool main body is clamped to the chuck 9 of the four-axis machine tool, then positioning processing is carried out, during the processing, the chuck 9 is rotated to adjust the position, so that the main shaft 10 drives the cutter head to process multiple surfaces of the blank 7, in this process, the blank 7 is clamped once and the forming processing of multiple surfaces can be completed; finally, the processed blank 7 is manually unloaded, the excess part of the blank 7 is removed by using wire cutting, and the semi-finished product of the L-shaped workpiece is obtained, the structure of the L-shaped workpiece is as shown in Figure 3

[0049] Of course, the above content is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the embodiments of the present application. The present application is also not limited to the above examples, and any equivalent changes and improvements made by those skilled in the art within the essential scope of the present application shall be attributed to the patent coverage range of the present application.​

Claims

1. A medical instrument multi-piece machining tool comprising a tool body into which a blank (7) is inserted, characterised in that, The tool main body comprises: a clamping handle (1), a neck (2) and a positioning part (3) arranged in a stepped manner; The rotation center axes of the clamping handle (1), the neck (2) and the positioning part (3) are coaxially arranged; The circumferential contour sizes of the clamping handle (1), the neck (2) and the positioning part (3) are sequentially and axially reduced in stages; The side surface of the positioning part (3) is provided with a limiting plane (4) for circumferential positioning of the blank (7); and the end part of the positioning part (3) is provided with a limiting hole (5) for axial positioning of the blank (7).

2. The multi-piece machining tool for medical devices according to claim 1, characterized in that, The blank (7) is provided with a process hole (701) matching the outer contour of the positioning part (3), and the positioning part (3) is inserted into the process hole (701).

3. The multi-piece machining tool for medical devices according to claim 1, characterized in that, The neck (2) is arranged between the clamping handle (1) and the blank (7), and the stepped surface of the clamping handle (1) and the end surface of the blank (7) are separated by the neck (2) to form an avoidance groove (8).

4. The multi-piece machining tool for medical devices according to claim 1, characterized in that, The limiting holes (5) are arranged in pairs.

5. The multi-piece machining tool for medical devices according to any one of claims 1-4, characterized in that, A clamping screw (6) is further arranged on the tool main body; The clamping screw (6) is arranged into the limiting hole (5) through the blank (7), and the blank (7) is axially fixed on the tool main body by the clamping screw (6).

6. The multi-piece machining tool for medical devices according to claim 1, characterized in that, The rotation center axis of the blank (7) is coaxially arranged with the rotation center axis of the tool main body.

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