CN202399097U - Grinding cutter - Google Patents

Abstract

The utility model discloses a grinding cutter which comprises a cutter handle and a plurality of sanding bars, wherein a plurality of grooves used for mounting the sanding bars are arranged on the knife handle in the radial direction; each sanding bar is correspondingly fixed within each groove; the cutter handle is a segment of solid cylinder body; and the outer walls of all the sanding bars on the cutter handle are on the same circumference which uses the central line of the cutter handle as the center of a circle. The grinding cutter has constant diameter and can directly roughly grind and finely grind holes to be machined; the machined hole has a uniform diameter; the cylindricity of the hole diameter can not be out of tolerance easily; the grinding cutter is efficient and quick, has high precision and can satisfy the design requirements of the holes to be machined, so the grinding cutter is particularly suitable for machining support sleeve pinholes of a core control rod drive device which requires high machining precision.

Description

A kind of grinding knife tool

Technical field

The utility model relates to a kind of grinding knife tool, and it is especially suitable for use as the support set pin-and-hole of nuclear control rod drive unit is processed, and the hole that also is suitable as other part processes.

Background technology

The nuclear control drive unit is the core component in the nuclear reactor, to the important role in safe operation of nuclear reactor.

At present; China is to accomplish through adjustable honing knife to the pin-and-hole processing of nuclear control rod drive unit support set; This cutter constitutes (referring to Fig. 1 and Fig. 2) by handle of a knife 101 and emery stick 102, and handle of a knife 101 constitutes a cylinder by the pintongs split, and radial arrangement has four as the groove that emery stick 102 is installed on handle of a knife 101; Emery stick 102 is fixed in each groove with the bonding mode correspondence; On handle of a knife 101, be provided with the interior trepanning of a taper, in interior trepanning, be equipped with screw pin 103, reach the purpose of regulating the tool diameter size through the feeding degree of adjustment screw pin 103 in interior trepanning.Though this cutter has stronger versatility, carry out the actual man-hour that adds at pin-and-hole to nuclear control rod drive unit support set, at first cutter is in swelling state; Processing pin-and-hole front end aperture bigger, and in follow-up processing along with the extruding of support set to cutter, the pin-and-hole middle aperture of processing is less; When being machined to the pin-and-hole rear end, cutter is in swelling state again, and the pin-and-hole aperture of processing is also bigger; So just make the pin-and-hole front and back end of nuclear control rod drive unit support set form horn mouth (referring to Fig. 3 and Fig. 4) respectively, the aperture cylindricity of pin-and-hole is overproof, need carry out follow-up correct grinding processing; Its machining accuracy is low, and is poor for applicability.

Summary of the invention

The purpose of the utility model is: to the deficiency of above-mentioned prior art, a kind of diameter definite value, grinding knife tool that machining accuracy is high are provided.

The technical scheme that the utility model adopts is:

A kind of grinding knife tool comprises handle of a knife and Duo Gen emery stick, and radial arrangement has a plurality of grooves as the installation emery stick on the said handle of a knife, and every emery stick correspondence is fixed in each groove, and said handle of a knife is one section solid cylinder.

The outer wall of all emery sticks is being on the same circumference in the center of circle with the handle of a knife center line on the said handle of a knife.

Said emery stick is the C-BN emery stick.

Said handle of a knife is made by alloy tool steel.

The groove that emery stick is installed on the said handle of a knife is evenly arranged on the circumference of handle of a knife.

Said emery stick is at least three.

The beneficial effect of the utility model is: the cutter of said structure is with its diameter definite value; Hole to be processed is directly roughly ground and finish grinded, and the aperture that processes is even, and the aperture cylindricity is difficult for overproof; Efficient quick; Precision is high, can satisfy the designing requirement in hole to be processed, is especially suitable for use as the support set pin-and-hole that requires the high nuclear control rod drive unit of machining accuracy is processed.

Description of drawings

Fig. 1 is the structural representation of existing adjustable honing knife.

Fig. 2 is the A-A zoomed-in view of Fig. 1.

Fig. 3 is the user mode sketch map of cutter shown in Figure 1.

Fig. 4 is the structural representation in the hole that processes of cutter shown in Figure 1.

Fig. 5 is a kind of structural representation of the utility model.

Fig. 6 is the A-A zoomed-in view of Fig. 5.

Fig. 7 is the user mode sketch map of the utility model.

Fig. 8 is the structural representation in the hole that processes of the utility model.

The specific embodiment

Referring to Fig. 5 and Fig. 6: the utility model comprises handle of a knife 201 and four emery sticks 202, and (trade mark: 9SiCr) be made, be one section solid cylinder body structure to handle of a knife 201, and emery stick 202 is the C-BN emery stick by alloy tool steel.Radial arrangement has four as the groove that emery stick 202 is installed on handle of a knife 201; These grooves are evenly arranged on the circumference of handle of a knife 201; Every emery stick 202 is fixed in each groove with the bonding mode correspondence, and it is on the same circumference in the center of circle that the outer wall of four emery sticks 202 that fix is preferably in handle of a knife 201 center lines.

The quantity of above-mentioned emery stick 201 is not the particular value of the utility model, in addition, can also be other quantity, for example five, the six roots of sensation etc., but should guarantee to have three at least.

Referring to Fig. 7 and Fig. 8: the utility model is with tool diameter size definite value; Hole to be processed is directly roughly ground and finish grinded; Not only effectively improved operating efficiency, and the aperture that processes is even, precision is high; Satisfy the designing requirement in hole to be processed, be especially suitable for use as the support set pin-and-hole that requires the high nuclear control rod drive unit of machining accuracy is processed.

Claims (6)

1. grinding knife tool; Comprise handle of a knife (201) and many emery sticks (202); Said handle of a knife (201) is gone up radial arrangement to be had a plurality of as the groove that emery stick (202) is installed; Every emery stick (202) correspondence is fixed in each groove, it is characterized in that: said handle of a knife (201) is one section solid cylinder.

2. according to the said grinding knife tool of claim 1, it is characterized in that: the outer wall that said handle of a knife (201) is gone up all emery sticks (202) is being on the same circumference in the center of circle with handle of a knife (201) center line.

3. according to the said grinding knife tool of claim 1, it is characterized in that: said emery stick (202) is the C-BN emery stick.

4. according to the said grinding knife tool of claim 1, it is characterized in that: said handle of a knife (201) is made by alloy tool steel.

5. according to the said grinding knife tool of claim 1, it is characterized in that: said handle of a knife (201) is gone up the groove that emery stick (202) is installed and is evenly arranged on the circumference of handle of a knife (201).

6. according to the said grinding knife tool of claim 1, it is characterized in that: said emery stick (201) is at least three.

Images