JPH07276208A - Curved raw material grinding device - Google Patents

Abstract

PURPOSE:To shorten working time, to ease machining work, and to stabilize the quality of work by intermittently sending a curved raw material, measuring the dimension of grinding parts in advance of machining, figuring out grinding conditions based on this measurement, grinding the material with a grinding wheel under the conditions thus figured out, measuring the ground parts after the grinding, and correcting these grinding conditions based on grinding wheel wear data obtained through this measurement. CONSTITUTION:Curved raw material is supplied by a raw material supplying mechanism 10 to a clamping mechanism 3 of a sending mechanism 1 one after the other and is sent intermittently by the sending mechanism 1. In advance of machining, the dimension of each part to be ground of this raw material is measured by a shape measuring means 5, and, based on these measurement data, the grinding conditions are figured out by the a computing means 6. Based on these grinding conditions, respective working heads H1 to H11 grind the grinding parts of the curved raw material in turn by using each grinding wheel. After the grinding work, the dimension of the ground parts of the curved raw material is measured by a finish shape checking means 8, and, the grinding wheel wear data are computed from these measurement data by the finish shape checking means 8. In addition, based on these wear data, the grinding conditions are corrected by a wear correcting means 9 one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending scale material grinding apparatus for grinding a bending scale material widely used in, for example, a construction site.

[0002]

2. Description of the Related Art Generally, a curved rule is manufactured as shown in FIG.
First, a short branch material a, a long branch material b, and a substantially L-shaped connecting material c are separately manufactured, and each of the materials is welded in a state in which their ends are abutted to each other as shown in FIG. Then, as shown in FIG. 13, a raised portion d produced by the welding after this welding.
Etc. and the front and back surfaces and both inner and outer end surfaces are ground with a grindstone, and then graduation processing is performed.

[0003]

However, although a grinding machine is used to grind the curved measuring material, most of it is done by hand, and the lateral cross section of the measuring measuring material is low in the middle part and at both edges. Since the part has a high shape, it has a unique shape and is performed by highly skilled workers, and there is a strong demand for shortening the working time, facilitating the processing, and stabilizing the quality.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems, and its gist is to provide a transfer mechanism for intermittently transferring a curved length material and a dimension of a ground portion of the curved length material. A shape measuring means for calculating, and a calculating means for calculating a grinding condition based on measurement data from the shape measuring means,
A grinding mechanism that grinds the ground portion of the curved length material with a grindstone based on the grinding conditions, a finish shape measuring means for measuring the dimensions of the ground portion of the curved length material after the grinding, and grindstone wear data from the finished shape measuring means. And a wear amount correcting means for correcting the above grinding conditions based on the above.

At this time, the grinding mechanism is composed of a plurality of processing heads which independently grind a plurality of grinding portions of the curved scale material, and based on the grinding conditions, the grinding movements of the grindstones of the respective processing heads. It is also possible to provide a control means for controlling the above, and an emergency stop means for outputting an operation stop signal when the grindstone exceeds a machining allowable limit due to wear, and intermittent index rotation as the transfer mechanism. A rotary table is used, and a clamp mechanism for attaching and detaching and holding the curved scale material is provided on the rotary table, and a material supply mechanism, the grinding mechanism, and a take-out mechanism are provided at each station of the rotary table. can do.

[0006]

The curved scale material is intermittently transported by the transport mechanism, the dimension of the ground portion of the curved scale material is measured by the shape measuring means before processing, and the computing means computes the grinding conditions based on the measurement data from the shape measuring means. On the basis of this grinding condition, the grinding mechanism grinds the ground portion of the curved length material with a grindstone, and the finished shape measuring means measures the dimension after grinding of the ground portion of the curved length material, and the finished shape is measured. The wear amount correcting means corrects the grinding conditions based on the grindstone wear data from the measuring means.

Further, at this time, the grinding mechanism is composed of a plurality of processing heads which independently grind a plurality of grinding parts of the curved scale material, and the grinding movement of the grindstone of each processing head is carried out based on the grinding conditions. By providing a control means for controlling, it becomes easy to grind a curved material having an irregular cross section,
Further, by providing an emergency stop means for outputting an operation stop signal when the grindstone exceeds an allowable machining limit due to wear, it is possible to automate the grinding process, and as the transfer mechanism, a rotary table for intermittent indexing rotation. -A table is used, and a clamp mechanism capable of attaching and detaching the curved scale material to and from the rotary table is provided, and a material supply mechanism, the grinding mechanism, and a take-out mechanism are provided at each station of the rotary table. As a result, the grinding process can be fully automated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 10 show an embodiment of the present invention, in which 1 is a transfer mechanism, in which a rotary table 2 for intermittent indexing rotation is used. In addition, a plurality of clamp mechanisms 3 capable of detachably holding the curved scale material W are provided.

Reference numeral 4 is a grinding mechanism, and in this case, FIG.
As shown in the figure, eleven grinding parts W ₁ ... W of the curved material W
₁₁ independent consists machining head H ₁ · · · H ₁₁ to grinding, the grinding wheel T ₁ · · · The respective processing head H
T ₁₁ is provided, and the grinding parts W ₁ and W ₂ are ground by the machining heads H ₁ and H ₂ by the combined motions of rotation, cutting and feeding of the grindstones T ₁ and T ₂ as shown in FIG. ₃・ W ₄ is the grinding stone T as shown in Fig. 6 by the processing heads H ₃・ H ₄ .
Grinding with complex motion by ₃・ T ₄ , grinding part W ₅
· W ₆ grinding wheel T as shown in FIG. 7 by the processing head H ₅ · H _{6 5} ·
Grinding with compound motion by T _{6 and} grinding part W ₇
8 is grinded by the machining head H ₇ by the grindstone T _{7 as} shown in FIG. 8 with complex motion, and the grinding parts W ₈ and W ₉ are grinded by the machining heads H ₈ and H ₉ by the grindstones T ₈ and T _{9 as} shown in FIG. is ground with a combined movement, further grinding site W ₁₀ · W ₁₁ is configured to be ground with a combined movement by the grinding wheel T ₁₀ · T ₁₁ as shown in FIG. 10 by the processing head H ₁₀ · H ₁₁ .

In the processing heads H ₁ , H ₂ , H ₃ , H _4, and H ₅ , H ₆ , H ₇ , short branch material a and long branch material b are used.
The connecting material c that connects and becomes closer to the corner,
As shown in FIG. 3, since the plate thickness increases from the point M and is formed in an arc shape, the cutting and feeding movements of the respective grindstones T are controlled by a combined arc movement in the x and z directions or the y and z directions. To be done. At this time, the processing heads H ₁ · H ₂ and H ₅ ·
The inclination θ of the grindstone T at H ₆ may be variable.

Reference numeral 5 is a shape measuring means, and 6 is a calculating means. In this case, as shown in FIG. Measurement origin O
Is measured by, for example, a contact type or a non-contact type displacement sensor S using a laser, an infrared ray, or an eddy current, and based on the measured data, it is compared with prestored reference data, and each grindstone is measured. The computing means 6 computes the grinding conditions for cutting and feeding of T, and the machining head H ₁ ...
-A grinding condition signal is output to the control means 7 for controlling the machining movement of the grindstone T of H ₁₁ .

Reference numeral 8 is a finish shape measuring means, and 9 is a wear amount correcting means. In this case, as in the measurement portion of the shape measuring means 5, as shown in FIG. The dimensions from the measurement origin O of I, R, H, N, H, and H, and T, C, L are measured, and the wear amount correcting means 9 calculates grindstone wear data based on this measured data, and this grindstone wear A correction signal for correcting the grinding conditions based on the data is output to the control means 7.

In this case, however, the material supply mechanism 10, the shape measuring means 5, the grinding mechanism 4, and the finishing shape are provided to each station of the rotary table 2 which is the transfer mechanism 1 in the forward direction of rotation. The measuring means 8 and the take-out mechanism 11 are arranged and configured.

In this case, an emergency stop means 12 is provided, and the grindstone wear data and the wear limit value are constantly compared and monitored, and when the grindstone T exceeds the machining limit due to wear, an operation stop signal is output to the control means 7. In addition, the warning means 13 is configured to give a warning.

Since this embodiment has the above-mentioned structure, the curved measuring material W is supplied by the material supplying mechanism 10 to the plurality of clamp mechanisms 3 on the rotary table 2 one by one, and the measuring measuring material W is transferred. Is intermittently transferred by the rotary table 2 of
Before the processing, the curved scale material W is first processed by the shape measuring means 5 to measure the dimensions of the respective ground portions W ₁ ... W ₁₁ , in this case the measurement origin O. Displacement at nine positions is measured, the calculation means 6 calculates the grinding conditions based on the measurement data from the shape measuring means 5, and each processing of the grinding mechanism 4 is performed based on the grinding conditions. The heads H ₁ ... H ₁₁ are ground parts W ₁ ...
W ₁₁ is sequentially ground by each of the grindstones T ₁ ... T ₁₁ , and after the grinding, the finish shape measuring means 8 is used.
Measures the dimensions of the ground portion W ₁ ... W ₁₁ of the curved measuring material W after grinding, and in this case, similarly to the measurement origin O, I, L, H, H, H, H, H The displacements at nine positions are measured, and the finish shape measuring means 8 calculates the grindstone wear data from the measured data. Based on the grindstone wear data, the wear amount correcting means 9 successively corrects the grinding conditions to complete the grinding. The subsequent curved scale material W is taken out by the take-out mechanism 11 and carried out, and thereafter, the curved scale material W is automatically ground in the same manner.

Therefore, the material W for supplying the curved scale material W is supplied to the material supply mechanism 1.
When the curved scale material W is intermittently transferred by the transfer mechanism 1 by being fed to 0, the dimensions of the respective ground portions W ₁ ... W ₁₁ are measured by the shape measuring means 5, and the measurement from the shape measuring means 5 is performed. Based on the data, the calculation means 6 calculates the grinding conditions, and based on the grinding conditions, the grinding mechanism 4 determines the grinding parts W ₁ ... W ₁₁ of the curved scale material W for the respective grindstones T _1.
It is possible to grind sequentially by T ₁₁ , so that the grinding work can be performed efficiently in a short time, and the finished shape measuring means 8 can grind the ground portion W ₁ of the curved material W after grinding.
.. The dimension of W ₁₁ after grinding is measured, and the grindstone wear data is calculated by the finish shape measuring means 8 from the measured data, and the wear amount correcting means 9 sequentially corrects the grinding conditions based on the grindstone wear data. It is possible to improve the grinding accuracy.

Further, in this case, the grinding mechanism 4 is composed of a plurality of processing heads H ₁ ... H ₁₁ for independently grinding a plurality of grinding portions of the curved scale material W, and the grinding conditions are satisfied. Since the control means 7 for controlling the processing movement of the grindstone of each processing head is provided based on the above, it is possible to easily grind the curved scale material W having an irregular cross section, and the above-mentioned grindstone T
Is equipped with an emergency stop means 12 that outputs an operation stop signal when the machining allowable limit is exceeded due to wear, the grinding process can be automated, and the transfer mechanism 1 is a rotary table for intermittent indexing rotation. A table 2 is used, a clamp mechanism 3 capable of detachably holding the curved scale material W is arranged on the rotary table 2, and a material supply mechanism 10 and a grinding mechanism 4 and a grinding mechanism 4 at each station of the rotary table 2. Since the take-out mechanism 11 is provided, the grinding process can be fully automated.

In the above embodiment, the grinding mechanism 4 is composed of eleven processing heads H ₁ ... H _11, but among the grinding parts W ₁ ... W ₁₁ , for example, grinding is performed. Processing head H for processing parts W ₈ , W ₉ , W ₁₀ , W _11
8・ H ₉・ H ₁₀・ H ₁₁ can be omitted, or further ground area W
The ₅ · W ₆ can also be configured by omitting the machining head H ₅ · H ₆ to be processed, also can be employed straight conveying structure as the transport mechanism 1, also rotating tape - for multiple parallel Bull 2 structure Can also be adopted.

Further, the structures and circuit configurations of the shape measuring means 5, the finish shape measuring means 8, the calculating means 6, and the controlling means 7 are appropriately selected and designed.

[0020]

As described above, according to the present invention, the curved length material is intermittently transferred by the transfer mechanism, the dimension of each ground portion is measured by the shape measuring means, and the calculating means is operated based on the measurement data from the shape measuring means. The grinding condition is calculated, and based on this grinding condition, the grinding mechanism can sequentially grind the ground parts of the curved length material with a grindstone, so that the grinding work can be performed efficiently in a short time and after grinding. In the finish shape measuring means, the dimension after grinding of the ground portion of the curved length material is measured, and the grindstone wear data is calculated from the measured data by the finish shape measuring means. Can be sequentially corrected, and the grinding accuracy can be improved accordingly.

Further, the grinding mechanism is composed of a plurality of processing heads for independently grinding a plurality of grinding portions of the curved scale material, and controls the grinding movement of the grindstone of each processing head based on the grinding conditions. By providing the control means for controlling, it is possible to easily grind a curved length material having an irregular cross section, and also to provide an emergency stop means for outputting an operation stop signal when the grinding stone exceeds a machining allowable limit due to wear. Therefore, the grinding process can be automated, and a rotary table for intermittent indexing rotation is used as the transfer mechanism, and a clamp mechanism for attaching and detaching and holding the bending scale material is provided on the rotary table. By arranging the material supply mechanism, the grinding mechanism, and the take-out mechanism in each station of the rotary table, the grinding process can be fully automated.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of drawings]

FIG. 1 is an overall configuration system diagram of an embodiment of the present invention.

FIG. 2 is an overall layout configuration diagram of an embodiment of the present invention.

FIG. 3 is an explanatory diagram of measurement points according to an example of the present invention.

FIG. 4 is an explanatory diagram of a grinding portion according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of a grinding process according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of a grinding process according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of grinding processing according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram of a grinding process according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram of a grinding process according to the embodiment of the present invention.

FIG. 10 is a diagram illustrating a grinding process according to an embodiment of the present invention.

FIG. 11 is an explanatory diagram of the manufacturing process of the curved length material.

FIG. 12 is an explanatory diagram of the manufacturing process of the curved length material.

FIG. 13 is an explanatory diagram of the manufacturing process of the curved length material.

[Explanation of symbols]

 W curved scale material 1 transfer mechanism 2 rotary table 4 grinding rotary mechanism 5 shape measuring means 6 computing means 7 control means 8 finish shape measuring means 9 wear amount correcting means 10 material supplying means 11 ejecting mechanism 12 emergency stop means

Claims (4)

[Claims] 1. A transfer mechanism for intermittently transferring a curved material,
Shape measuring means for measuring the dimensions of the ground portion of the curved measuring material, calculating means for calculating the grinding conditions based on the measurement data from the shape measuring means, and the grinding portion of the curved measuring material is ground with a grindstone based on the grinding conditions. A grinding mechanism, a finish shape measuring means for measuring a dimension of a ground portion of the curved scale material after the grinding, and a wear amount correcting means for correcting the grinding condition based on grindstone wear data from the finish shape measuring means. A curved material grinding device equipped. 2. The grinding mechanism comprises a plurality of processing heads that independently grind a plurality of ground portions of the curved scale material, and performs a grinding movement of a grindstone of each of the processing heads based on the grinding conditions. The curved scale material grinding device according to claim 1, further comprising control means for controlling. 3. The bending scale material grinding device according to claim 1, further comprising an emergency stop means for outputting an operation stop signal when the grinding stone exceeds a machining allowable limit due to wear. 4. The transfer mechanism is composed of a rotary table for intermittent indexing rotation, and a clamp mechanism capable of detachably holding the bending scale material is disposed on the rotary table, and each station of the rotary table is provided. The curved scale material grinding apparatus according to claim 1, wherein a material supply mechanism, the grinding processing mechanism, and a take-out mechanism are provided in the apparatus.