CN213749027U

CN213749027U - P bores anti-fatigue test platform

Info

Publication number: CN213749027U
Application number: CN202022717192.1U
Authority: CN
Inventors: 史朋飞; 吕德祥; 吕威; 阮志孟
Original assignee: Ningbo Xinyuan Dental Devices Co ltd
Current assignee: Ningbo Xinyuan Dental Devices Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-20
Anticipated expiration: 2030-11-23

Abstract

The invention discloses a P drill fatigue resistance test bed which comprises a rack, wherein a first clamping mechanism and a second clamping mechanism are arranged on the rack, the first clamping mechanism is fixed with the head of a P drill, the second clamping mechanism is rotationally connected to the rack, the second clamping mechanism is fixed with a drill bit of the P drill, a first gear is arranged on the outer ring of the second clamping mechanism, the P drill fatigue resistance test bed further comprises a loading motor, a second gear is arranged on an output shaft of the loading motor, the first gear is meshed with the second gear, the loading motor repeatedly applies positive and negative torque, and the torque is amplified through the gears and then transmitted to the second clamping mechanism. And applying positive and negative torque to the P drill by loading the motor.

Description

P bores anti-fatigue test platform

Technical Field

The invention relates to dental equipment, in particular to a P-diamond fatigue resistance test bed.

Background

The P drill, also called PEESO REAMERS, is a cutting tool which is clamped on a dental handpiece and expands the root canal by rotating, is mainly applied to expanding the upper part of the root canal, has a longer blade part and a safety head at the tip, is harder and cannot be bent, and is a consumable instrument commonly used in stomatology department.

The main purpose of the P-drill is to remove the filling material from the straight upper part of the root canal. Or may be used for stake-path preparation. Despite the safety head design, the hole P is also easily side-pierced. For safer use, all P-burs have a tapered design at the neck, so that they do not break again from the working end when accidentally broken. But break off from thin neck, more convenient to take out, safer.

Referring to fig. 1, the P-drill includes three parts, i.e., a drill bit 100, a neck 101 and a head 102, wherein the drill bit of the P-drill is longer, the neck is thinner, and the distance to be processed by the head is longer. According to the common grinding process of the forming grinding wheel in China, the exposed part of the head part is long when the head part is formed and ground, the clamping part is correspondingly reduced, the clamping stability is poor when large-scale automatic processing is carried out, and the radial circular runout of the head part and the neck part of the P drill can reach more than 0.05 mm.

During the processing of the material itself or during the heat treatment process, improper operation may cause the material structure to change, and thus, poor products are easily produced. In order to perform effective quality detection on products in production in time, a P-diamond fatigue resistance test bed needs to be developed. And carrying out effective verification on each batch of products.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the P drill anti-fatigue test bed which can conveniently test the durability of the P drill.

In order to solve the technical problems, the technical scheme adopted by the invention for solving the technical problems is as follows: p bores fatigue test platform, which comprises a frame, be provided with first fixture and second fixture in the frame, first fixture with the head that P bored is fixed mutually, second fixture rotates to be connected in the frame, second fixture with the drill bit that P bored is fixed mutually, the outer lane of second fixture is provided with first gear, still includes a loading motor, be provided with the second gear on the output shaft of loading motor, first gear with the second gear meshes mutually, positive and negative direction's moment of torsion is applyed repeatedly to the loading motor, transmits after gear amplification for second fixture. The torque in the positive and negative directions is applied to the P drill through the loading motor, the stress condition of the P drill in actual use is simulated, so that a fatigue test is carried out, and the P drill is judged to be unqualified if damaged through the set times under the verified load. The motor can be started to rotate forward and backward repeatedly, and the test can be completed in a short time.

In the above technical solution, preferably, a rail is arranged on the frame, and the first clamping mechanism is slidably connected to the rail. The first clamping mechanism can slide on the rail, so that the head of the P drill can be conveniently installed.

In the above technical scheme, preferably, the rail is provided with a first screw hole, the first clamping mechanism is provided with a through hole, and a first bolt passes through the through hole and then is connected to the first screw hole. After the installation, fix with first bolt, avoid first fixture to take place the displacement when the test.

In the above technical scheme, preferably, the first clamping mechanism includes a body, the body is provided with a mounting hole and a second screw hole communicated with the mounting hole, the head of the P drill is inserted into the mounting hole, and a second bolt penetrates through the second screw hole and then is tightly pressed against the head of the P drill.

In the above technical solution, preferably, the loading motor is disposed below the rack.

Compared with the prior art, the invention has the beneficial effects that: the torque in the positive and negative directions is applied to the P drill through the loading motor, the stress condition of the P drill in actual use is simulated, so that a fatigue test is carried out, and the P drill is judged to be unqualified if damaged through the set times under the verified load. The motor can be started to rotate forward and backward repeatedly, and the test can be completed in a short time.

Drawings

Fig. 1 is a schematic view of a P-drill.

Fig. 2 is a cross-sectional view of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the detailed description.

Referring to fig. 2, the P-drill fatigue test stand comprises a frame 1, wherein a first clamping mechanism 2 and a second clamping mechanism 3 are arranged on the frame 1.

The first clamping mechanism 2 is fixed with the head 100 of the P drill, the first clamping mechanism 2 comprises a body 21, a mounting hole 22 and a second screw hole 23 communicated with the mounting hole 22 are formed in the body 21, the head 100 of the P drill is inserted into the mounting hole 22, and a second bolt 24 penetrates through the second screw hole 23 and then is tightly propped against the head 100 of the P drill.

The frame 1 is provided with a track 11, and the first clamping mechanism 2 is connected to the track 11 in a sliding manner. The first clamping mechanism 2 can slide on the rail 11, so that the head of the P drill can be conveniently installed, during installation, the first clamping mechanism can be moved backwards, then the head of the P drill is inserted into the installation hole 22, then the P drill is locked by the second bolt 24, and then the first clamping mechanism is moved forwards along the rail, so that the drill bit of the P drill is inserted into the second clamping mechanism.

The rail 11 is provided with a first screw hole 111, the first clamping mechanism 2 is provided with a through hole 25, and the first bolt 12 penetrates through the through hole 25 and then is connected to the first screw hole 111. After the installation, fix with first bolt, avoid first fixture to take place the displacement when the test.

The second clamping mechanism 3 is rotatably connected to the rack 1, the second clamping mechanism 3 is fixed to a drill bit of the P drill, a first gear 31 is arranged on the outer ring of the second clamping mechanism 3, the loading motor 4 is further included, and the loading motor 4 is arranged below the rack 1. The output shaft of the loading motor 4 is provided with a second gear 41, the first gear 31 is meshed with the second gear 31, and the loading motor repeatedly applies torque in the positive and negative directions, amplifies the torque through the gears and then transmits the torque to the second clamping mechanism. The torque in the positive and negative directions is applied to the P drill through the loading motor, the stress condition of the P drill in actual use is simulated, so that a fatigue test is carried out, and the P drill is judged to be unqualified if damaged through the set times under the verified load. The motor can be started to rotate forward and backward repeatedly, and the test can be completed in a short time.

Claims

P bores antifatigue test platform, including the frame, its characterized in that: the automatic drilling machine is characterized in that a first clamping mechanism and a second clamping mechanism are arranged on the rack, the first clamping mechanism is fixed with the head of the P drill, the second clamping mechanism is rotatably connected to the rack, the second clamping mechanism is fixed with the drill bit of the P drill, a first gear is arranged on the outer ring of the second clamping mechanism, the automatic drilling machine further comprises a loading motor, a second gear is arranged on the output shaft of the loading motor, the first gear is meshed with the second gear, the loading motor repeatedly applies torque in the positive and negative directions, and the torque is amplified through the gears and then transmitted to the second clamping mechanism.
2. The P-drill fatigue test stand of claim 1, characterized in that: the rack is provided with a track, and the first clamping mechanism is connected to the track in a sliding mode.
3. The P-drill fatigue test stand of claim 2, characterized in that: the rail is provided with a first screw hole, the first clamping mechanism is provided with a through hole, and a first bolt penetrates through the through hole and then is connected to the first screw hole.
4. The P-drill fatigue test stand of claim 2, characterized in that: the first clamping mechanism comprises a body, a mounting hole and a second screw hole communicated with the mounting hole are formed in the body, the head of the P drill is inserted into the mounting hole, and a second bolt penetrates through the second screw hole and then is tightly propped against the head of the P drill.
5. The P-drill fatigue test stand of claim 1, characterized in that: the loading motor is arranged below the rack.