Test apparatus for material cutting performance testing and test method

Abstract

The present invention discloses a test apparatus for material cutting performance testing and a test method. The test apparatus comprises a working table, a cutting mechanism, a sample sheet fixing mechanism, a force measuring sensor, a sample sheet moving mechanism and a controller; the sample sheet moving mechanism comprises a linear sliding rail, a stepping motor and a supporting block; the force measuring sensor is installed at the top of the supporting block; the sample sheet fixing mechanism is arranged on the load bearing surface of the force measuring sensor; a sample sheet is mountedat the top of the sample sheet fixing mechanism; the cutting mechanism comprises a cutting head, a driving mechanism and a fixing frame; the fixing frame is installed on the working table; the drivingmechanism is arranged on the fixing frame; and the stepping motor, the force measuring sensor and the driving mechanism are all electrically connected with the controller. With the test method adopted, a novel method is provided for the confirmation of cutting performance characteristics in a simulated biological hard tissue material development process and can be used as a verification basis ofthe development result of a simulated material, and a simulated material closer to a natural material can be developed.

Description

technical field [0001] The invention relates to the technical field of oral cavity teaching models, in particular to a testing instrument and a testing method for testing material cutting performance. Background technique [0002] Oral model for dental clinical simulation training, in which the materials for simulating teeth (including enamel, dentin, cementum) and alveolar bone (cortical bone, cancellous bone) are simulated by plastic or composite materials. At present, the various simulated materials developed cannot accurately characterize whether their cutting performance is close to that of natural teeth and alveolar bone, and can only be roughly evaluated by the method of grinding samples in traditional industries, that is, using sand The belt grinding sample, within a specified time, with a specified force, how much thickness is ground off, and this is used as a parameter to evaluate the grinding performance of the material; but this does not conform to the natural bi...

AI Technical Summary

Problems solved by technology

At present, the various simulated materials developed cannot accurately characterize whether their cutting performance is close to that of natural teeth and alveolar bone, and can only be roughly evaluated by the method of grinding samples in traditional industries, that is, using sand The belt grinding sample, within a specified time, with a specified force, how much thickness is ground off, and this is used as a parameter to evaluate the grinding performance of the material; but this does not conform to the natural biological hard tissue grinding scene. Take the grinding of teeth as an example. The doctor usually holds a high-speed dental handpiece with a bur in his hand, and cuts intermittently with a small force in the environment of spraying water mist. Experience gained resistance feedback to avoid overcutting and overheating damage

However, in the grinding performance test of the sample in the traditional industry, there is no force feedback, and there is no intermittent grinding, and the parameters obtained are single. The required simulation materials cannot be obtained by adjusting the material formula,

[0003] That is, the cutting feeling of the developed simulated material cannot be close to that of natural teeth and alveolar bone, which makes the development of simulated materials very difficult

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