CN215144788U

CN215144788U - Excircle boring cutter is used in surgical instruments processing

Info

Publication number: CN215144788U
Application number: CN202121056135.1U
Authority: CN
Inventors: 王海燕
Original assignee: Paragon Medical Device Changzhou Co ltd
Current assignee: Paragon Medical Device Changzhou Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-14
Anticipated expiration: 2031-05-17

Abstract

The utility model relates to the technical field of machining, in particular to an excircle boring cutter for machining surgical instruments, which comprises a cutter bar, a cutter head and a cutter assembly, wherein the center of the cutter bar is provided with an axial hole which penetrates through the cutter head and is communicated with the outside of the end where the cutter head is positioned, the cutter head is provided with a cutter groove at one side far away from the cutter bar, and the outer side wall of the cutter groove is provided with an adjusting hole; the cutter assembly comprises a cutter holder, a blade and an adjusting bolt, the blade is fixedly arranged on the cutter holder, the cutter holder is fixedly arranged in the cutter groove, the adjusting bolt is arranged in the adjusting hole, and the position of the blade is finely adjusted by the adjusting bolt and the support of the cutter holder. The utility model discloses an excircle boring cutter is used in surgical instruments processing leans on the position of blade to finely tune through leaning on between adjusting bolt and the cutter holder, and when adjusting bolt did not twist the regulation hole, the blade was outer most, and adjusting bolt twists the regulation hole when at most, and the blade was interior most to this position of adjusting the blade, thereby carry out more accurate processing, satisfy accurate dimensional requirement, it is more convenient.

Description

Excircle boring cutter is used in surgical instruments processing

Technical Field

The utility model belongs to the technical field of machining technique and specifically relates to an excircle boring cutter is used in surgical instruments processing.

Background

Many surgical instruments have cylindrical supports and the like, and the cylindrical portions of the surgical instruments are usually machined by milling with a milling cutter. For example, when a D11 cylinder with a length of 75mm is machined, a D16 milling cutter with an edge length of 80 mm is generally used for milling the cylinder, and the machining time is 20 minutes. However, the cutter is too long in overhang, the surface of the cylinder has conicity and vibration cutter lines, the processing time is long, and the qualified rate is low.

In view of the problems existing in milling, an excircle boring cutter is selected for processing a cylindrical component, but the blades of the existing boring cutters are directly fixed on a cutter head, the positions of the blades cannot be accurately adjusted, and when size deviation occurs, the boring cutter can be directly replaced, so that the boring cutter is inconvenient and low in size precision.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an excircle boring cutter is used in surgical instruments processing, this excircle boring cutter supports through between adjusting bolt and the cutter holder and leans on the position of blade to finely tune, and when adjusting bolt did not twist the regulation hole, the blade was outer most, and adjusting bolt twists the regulation hole when most, and the blade was interior most to this position of adjusting the blade is carried out, thereby carries out more accurate processing, satisfies accurate dimensional requirement, and is more convenient.

The utility model provides a technical scheme that its technical problem adopted is:

an excircle boring cutter for processing surgical instruments comprises a cutter bar, a cutter head and a cutter assembly, wherein an axial hole which penetrates through the cutter head and is communicated with the outside of the end where the cutter head is located is formed in the center of the cutter bar; the cutter assembly comprises a cutter holder, a blade and an adjusting bolt, wherein the blade is fixedly arranged on the cutter holder, the cutter holder is fixedly arranged in the cutter groove, the adjusting bolt is arranged in the adjusting hole, and the position of the blade is finely adjusted by the adjusting bolt and the position of the cutter holder, which is abutted against the cutter holder.

Specifically, the inner side of the outer side wall of the tool groove is provided with a limiting part for limiting the position of the tool holder.

Specifically, the inner surface of the limiting part is a limiting plane matched with the outer surface of the tool holder, and the adjusting bolt penetrates through the limiting plane through the outer side wall to abut against the tool holder.

Specifically, the number of the cutter grooves and the number of the cutter assemblies are two.

Specifically, the two cutter assemblies are respectively arranged on two sides of the cutter head, so that the blade of one cutter assembly is superposed with the blade of the other cutter assembly after rotating 180 degrees along the blade edge surface of the blade.

Specifically, the knife clamp is arranged on one side of the blade, and an avoiding notch I is arranged at a position close to the blade, so that a certain gap is formed between the knife clamp and the side wall of the knife groove.

Specifically, the side wall of the knife groove is provided with a second avoidance notch at a position corresponding to the blade.

Specifically, the blade head is provided with a third avoidance notch at a part where the blade groove is not provided.

The utility model has the advantages that:

(1) the utility model discloses an excircle boring cutter is used in surgical instruments processing finely tunes the position of blade through the support between adjusting bolt and the cutter holder, and when adjusting bolt did not twist the regulation hole, the blade was outer most, and when adjusting bolt twisted the regulation hole the most, the blade was inside most to this position of adjusting the blade, thereby carries out more accurate processing, satisfies accurate dimensional requirement, and is more convenient;

(2) the utility model provides a cutter holder has set up the position of being close to the blade in one side of installation blade and has dodged breach one, dodges and sets up and make and form certain clearance between the lateral wall in sword groove and the cutter holder of breach one, does benefit to the metal debris's of processing production in time getting rid of, avoids metal debris to pile up and blocks the tool bit.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of another angle of the present invention (omitting a cutter assembly);

in the figure: 1, a cutter bar; 11. an axial bore; 2. a cutter head; 21. a cutter groove; 211. an adjustment hole; 22. a limiting part; 221. a limiting plane; 23. avoiding a second gap; 24. avoiding a third gap; 31. a tool holder; 311. avoiding the first notch; 32. a blade; 33. and adjusting the bolt.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

An excircle boring cutter for processing surgical instruments is shown in figures 1-2 and comprises a cutter bar 1, a cutter head 2 and a cutter assembly, wherein the center of the cutter bar 1 is provided with an axial hole 11 which penetrates through the cutter head 2 and is communicated with the outside at the end where the cutter head 2 is positioned, one surface of the cutter head 2, which is far away from the cutter bar 1, is provided with a cutter groove 21, and the outer side wall of the cutter groove 21 is provided with an adjusting hole 211; the cutter assembly comprises a cutter holder 31, an insert 32 and an adjusting bolt 33, wherein the insert 32 is fixedly arranged on the cutter holder 31, the cutter holder 31 is fixedly arranged in the cutter groove 21, the adjusting bolt 33 is arranged in the adjusting hole 211, and the position of the insert 32 is finely adjusted through the abutting of the adjusting bolt 33 and the cutter holder 31. This excircle boring cutter leans on the position of blade 32 to finely tune through leaning on between adjusting bolt 33 and the cutter holder 31, and when adjusting bolt 33 did not twist regulation hole 211, blade 32 was outer most, and adjusting bolt 33 twists regulation hole 211 when most, and blade 32 was inside most to this position of adjusting blade 32 is adjusted, thereby carries out more accurate processing, satisfies accurate dimensional requirement, and is more convenient.

Adopt the boring cutter to add man-hour to the cylindrical position of surgical instruments, need roughly bore, finish boring twice process usually, the utility model discloses an excircle boring cutter is as finish boring cutter. Using the D11 cylindrical stand that machining length is 75mm as an example, the part blank is by the water cutting blanking, and D11 cylinder both sides surplus is 3mm, and specific course of working is:

(1) the heavy boring cutter is designed to be a fixed cutter head, the blade is locked to the heavy boring cutter head through a screw, and the outer diameter of heavy boring machining is designed to be 11.5 mm. The cutter body is hollow, the aperture is 14.75mm, the hole depth is 90mm, and both sides of the cutter body are provided with cutting windows.

(2) Roughly boring the cylinder, and adopting non-circulating boring, wherein the rotating speed of a main shaft is set to be 1000 turns, downward cutting feed is 50 mm/min, cutter lifting feed is set to be mm/min, and the rough boring processing time is as follows: 1 minute and 40 seconds.

(3) The fine boring cutter is designed into an adjustable cutter head, the outer diameter of fine boring machining is designed to be 11mm, the cutter body is hollow, the aperture is 14mm, and the hole depth is 90 mm. The screw locks the blade to the tool holder, installs the tool holder to the tool bit, and the tool holder afterbody supports to the spacing plane of tool bit, and tool holder locking screw suitably locks. And (3) mounting the boring cutter on a cutter setting gauge, respectively adjusting the cutter points on two sides to 5.5mm of a rotation center by adjusting the adjusting bolts, and then locking the cutter clamp adjusting bolts.

(4) And finely boring the cylinder, and performing non-circulating boring, wherein the rotating speed of a main shaft is set to 800 revolutions, downward cutting feeding is 50 mm/min, and cutter lifting feeding is set to 200 mm/min. And after finish boring, measuring the outer diameter of the cylinder, and if the outer diameter size has deviation, adjusting the adjusting bolt in a detachable mode until the boring outer diameter meets the requirements of a drawing. Fine boring machining time: 1 minute 53 seconds.

The method is adopted to process the cylinder, the integral processing time is not more than 4 minutes, and compared with milling processing, the processing efficiency is greatly improved.

In a specific embodiment, as shown in fig. 1, the inside of the outer side wall of the pocket 21 is provided with a stopper 22 for limiting the position of the holder 31. The limiting part 22 is matched with the tool holder 31, so that the machining precision is further improved.

In a specific embodiment, as shown in fig. 1-2, the inner surface of the position-limiting portion 22 is a position-limiting plane 221 matching the outer surface of the holder 31, and the adjusting bolt 33 passes through the position-limiting plane 221 via the outer sidewall to abut against the holder 31.

In one particular embodiment, as shown in figures 1-2, there are two pockets 21 and two cutter assemblies.

In one embodiment, as shown in fig. 1-2, two cutter assemblies are disposed on either side of the cutting head 2 such that the blade 32 of one cutter assembly is rotated 180 ° along the cutting edge surface of the blade 32 and then coincides with the blade 32 of the other cutter assembly.

In a specific embodiment, as shown in fig. 1, the holder 31 has a relief notch 311 at a side where the insert 32 is mounted, and a portion close to the insert 32, so that a certain gap is formed between the holder 31 and a side wall of the pocket 21. The arrangement of the first avoiding notch 311 enables a certain gap to be formed between the side wall of the cutter groove 21 and the cutter holder 31, so that metal debris generated by machining can be discharged in time, and the metal debris is prevented from accumulating to clamp a cutter head.

In one specific embodiment, as shown in fig. 1-2, the sidewall of the pocket 21 is provided with a second relief notch 23 at a location corresponding to the blade 32.

In a specific embodiment, as shown in fig. 1-2, the cutting head 2 is provided with a relief notch three 24 at a portion where the cutter groove 21 is not provided.

The avoidance notch II 23 and the avoidance notch III 24 are also beneficial to timely removing metal fragments generated by processing, and the metal fragments are prevented from being accumulated to block the cutter head.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a surgical instruments processing is with excircle boring cutter which characterized in that: the cutter comprises a cutter bar (1), a cutter head (2) and a cutter assembly, wherein an axial hole (11) which penetrates through the cutter head (2) and is communicated with the outside of the end where the cutter head (2) is located is formed in the center of the cutter bar (1), a cutter groove (21) is formed in one surface, far away from the cutter bar (1), of the cutter head (2), and an adjusting hole (211) is formed in the outer side wall of the cutter groove (21); the cutter assembly comprises a cutter holder (31), a blade (32) and an adjusting bolt (33), wherein the blade (32) is fixedly arranged on the cutter holder (31), the cutter holder (31) is fixedly arranged in the cutter groove (21), the adjusting bolt (33) is arranged in an adjusting hole (211), and the position of the blade (32) is finely adjusted through the abutting of the adjusting bolt (33) and the cutter holder (31).

2. The outer cylindrical boring cutter for surgical instrument machining according to claim 1, wherein: the inner side of the outer side wall of the cutter groove (21) is provided with a limiting part (22) used for limiting the position of the cutter holder (31).

3. The outer cylindrical boring cutter for surgical instrument machining according to claim 2, wherein: the inner surface of the limiting part (22) is a limiting plane (221) matched with the outer surface of the tool holder (31), and the adjusting bolt (33) penetrates through the limiting plane (221) through the outer side wall to abut against the tool holder (31).

4. The outer cylindrical boring cutter for surgical instrument machining according to claim 1, wherein: the number of the cutter grooves (21) and the number of the cutter components are two.

5. The outer cylindrical boring cutter for surgical instrument machining according to claim 4, wherein: the two cutter assemblies are respectively arranged on two sides of the cutter head (2), so that the blade (32) of one cutter assembly is superposed with the blade (32) of the other cutter assembly after rotating 180 degrees along the edge surface of the blade (32).

6. The outer cylindrical boring cutter for surgical instrument machining according to claim 1, wherein: the tool holder (31) is provided with a first avoidance notch (311) at one side of the tool holder (32) on which the blade (32) is arranged and at a position close to the blade (32), so that a certain gap is formed between the tool holder (31) and the side wall of the tool groove (21).

7. The outer cylindrical boring cutter for surgical instrument machining according to claim 1, wherein: and a second avoidance notch (23) is arranged on the side wall of the cutter groove (21) at a position corresponding to the blade (32).

8. The outer cylindrical boring cutter for surgical instrument machining according to claim 1, wherein: and an avoidance notch III (24) is arranged on the part of the cutter head (2) where the cutter groove (21) is not arranged.