JPS63279837A - Apparatus for processing artificial tooth or bone - Google Patents

Abstract

PURPOSE:To process an artificial tooth or bone with the accuracy in the order of about + or -0.05mm, by providing a CNC control apparatus for correcting measuring data on the basis of the expansion and contraction data of both of a mold and a model to control the driving of a processing machine. CONSTITUTION:The dimensional shape of a mold 2 is measured by a digitizer 3 and the measured data is inputted to a memory 5 through a CNC control apparatus 4. This memory 5 has a ROM and a RAM, and a signal is processed by a CPU to be stored in the memory 5 and the CPU has data correcting function. That is, an error is generated at the time of impression-taking by the expansion and contraction due to material quality, a shape, temp. or the like but error correction data is preliminarily inputted to Teaching and the CPU performs operational processing so as to operate and correct the signal from said data to output accurate data to the memory. Next, the CNC control apparatus 4 reads the correction data of the memory 5 to control the driving of a processing machine 6 and processing is applied to an artificial tooth matrix material on the basis of the correction data.

Description

[Detailed description of the invention] [Industrial application field] The present invention applies to an apparatus for processing and molding artificial teeth and bones.

[Prior art and problems]

Conventionally, in order to manufacture artificial teeth and artificial bones using ceramics, etc., raw materials such as feldspar and alumina powder are mixed with water and liquid paraffin, kneaded to create a clay-like material, which is then placed in a mold and sintered. A method of shaping has been adopted.

In the sintering process, a mold must first be manufactured, the resulting mold is filled with raw materials, and press pressure molding is performed.
The molded body is pre-sintered. In addition, hot press molding is performed at a temperature of about 100 to 200°C for several tens of minutes, and then the molded body is taken out of the mold and, if necessary, pre-sintered at around 800°C in a furnace, and then heated to about 1200°C. Sintering is performed at high temperatures.

However, when forming by such a sintering method, many steps and a long time are required, and impurities such as binders are burned during sintering and released as gas, causing self-shrinkage and causing deviations in finished dimensions. occurs. In addition to sintering, molding was also carried out by making a mold and forming an uneven mold, but it was generally unavoidable that an error of about ±0.3 to 0.5 mm would occur. Ta.

[Means for solving problems]

The present invention was proposed in view of the above-mentioned drawbacks, and is an apparatus for processing and forming a base material by controlling the drive of a processing machine using data obtained by measuring dimensions and shapes from a mold or model.
The invention is characterized in that it is provided with a CNC control device incorporating a computer that inputs expansion and contraction data of the mold or model to the network side data and drives and controls the processing machine using data corrected based on the data. It is something.

(Example〕 The present invention will be explained below with reference to an embodiment of the drawings.

In FIG. 1, a molding material 1 such as plaster, resin, clay, etc. is injected into most of the tooth to be repaired to repair cavities, etc., and an interlocking mold is made. 2 is a mold obtained by making a mold, and an artificial tooth is to be processed and molded according to the shape of this mold 2.

FIG. 2 shows an embodiment of the processing apparatus, in which the dimensions and shape of the mold 2 are measured by a digitizer 3. The digitizer 5 uses a laser distance measuring method, for example, to irradiate the mold 2 with a laser beam, measure the three-axis coordinates of x, Y, and Z using reflected waves, and further performs smoothing processing to digitize the data and generate a measurement signal. This measured data is input to the memory 5 through the CNC control device 4. The memory 5 includes a ROM, a RAM, etc., and stores signals through processing by the CPU, and the CPU has a data correction function. In other words, errors occur during mold making due to expansion and contraction due to material, shape, temperature, etc., but this error correction data is input in advance to Teaching, and the CPU calculates and corrects signals from this data to obtain accurate data. Performs arithmetic processing such as memory and output. Next, the CNC device 4 reads out the modified data from the memory 5 and controls the driving of the processing machine 6. A milling machine, an electric discharge machine, a laser processing machine, a diamond grinding machine, etc. are arbitrarily selected and used as processing machines, and the artificial tooth base material is processed based on the data.

Figure 3 is an explanatory diagram of the processing process by the processing machine 6, where 7 is an artificial tooth base material arbitrarily selected such as precious metals, non-metals, ceramics, etc., which is set in the processing machine at AI level and processed and formed. . First, in step B, a portion corresponding to the base of the mold 2 is processed to form a base hole 7a. Then, the holder 8 prepared in step C is fixed and chucked here, and then in step D, the base material is processed into a size and shape corresponding to the outer shape of the mold 2.

Both processes are performed while driving and controlling the machine based on data from the memory 5, and the base material 7 is formed into a mold shape 7b with its external dimensions. Holder 8 at ET after processing is completed
to obtain the finished product.

According to the processing device of the present invention, the processing accuracy is ±0.05, which is an order of magnitude higher than that manufactured by conventional sintering, casting, etc.
It was possible to process with an accuracy of about mm. In addition, the processing target is not limited to teeth, but can also be used to process artificial bones using a model, and any measuring device other than a laser can be used to measure the mold or model, and the measurement signal can be memorized. Processing can be done by directly controlling the processing machine. Further, the processing machine is not limited to one that controls the three axes of XYZ, but may also be a machine that controls five axes, six axes, or the like.

〔Effect of the invention〕

As described above, the present invention provides an artificial tooth and artificial bone processing device that processes and forms a base material by driving and controlling a processing machine based on data obtained by measuring dimensions and shapes from a mold or model.
The present invention is characterized by being provided with a CNC control device incorporating a computer that corrects the measurement data based on inputting expansion and contraction data of the mold or model and controls the processing machine. , it is possible to process and shape the base material while correcting the measurement data of the mold or model, producing high-precision artificial teeth with an accuracy of about ±0.05 mm,
It can process bones and is extremely effective for repairing teeth and bones. In addition, machining is carried out by machining, grinding, electric discharge machining, etc., so it can be processed in a short time and with high efficiency.It is possible to select any processing machine depending on the base material, and it is possible to process metals, non-metals, ceramics, etc. Desired artificial teeth and bones can be made using any material.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a mold-making process, FIG. 2 is a configuration diagram of an apparatus according to an embodiment of the present invention, and FIG. 3 is an explanatory diagram of an embodiment of a processing process using an apparatus according to the present invention. 2...Model 3...Digitizer 4...CNC control device 5...Memory 6... ...Processing machine 7 ...Base material 8 ... Holder patent applicant Kiyoshi Inoue, representative of Inoue Japax Laboratory Co., Ltd. Figure 1 Figure 3

Claims (1)

[Claims] In a device that processes and shapes a base material by driving and controlling a processing machine using data obtained by measuring dimensions and shapes from a mold or model, the measurement data is used to expand the mold or model,
A CN with a built-in computer that inputs shrinkage data, corrects it based on this data, and controls the processing machine.
An artificial tooth and bone processing device characterized by being equipped with a C control device.