JP2002113641A - Method and device for matching grinding of needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically proceed a rational grinding process by improving the matching technique for a body material 1d having a hole with a needle material 2d, and to secure the contra-positional relation between the body member and the needle member ground for matching. SOLUTION: An inner peripheral surface grinding mechanism 10 and an outer peripheral surface grinding mechanism 11 are totally controlled by a total automatic control device 12. Especially, a measurement value (an arrow (j)) by an inner diameter measurer 10c of the inner peripheral surface grinding mechanism 10 is input to the total automatic control device 12, and the total automatic control device 12 gives the dimension command signal (an arrow (k)) for grinding the periphery of the needle material 2d into a dimension matching with the described measurement value (j) to the outer peripheral surface grinding mechanism 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of grinding a hole formed in a body member into a concave cylindrical surface and fitting the outer peripheral surface of the needle member to the concave cylindrical surface precisely. Thus, the present invention relates to a method for grinding the outer peripheral surface of the needle member and an apparatus suitable for carrying out the method.

[0002]

2. Description of the Related Art When a hole and a shaft are precisely fitted, matching grinding is inevitably performed if a nanometer unit is pursued. In this case, work efficiency and high precision are hardly compatible. At the time when the efficiency of industrial production was of the utmost importance, there was a strong tendency to hate this matching grinding, which was called "in-kind matching". However, the inventor pursued high-precision fitting between the hole and the needle and tried to obtain a fitting accuracy on the order of sub-micron, and found that matching grinding was optimal even with the latest grinding technology. Was confirmed. Here, the fact regarding the current grinding technology that the degree of grinding finish of the needle is much higher than the grinding finish accuracy of the hole cannot be ignored. Although the grinding finish accuracy of the hole is lower than that of the needle, when this is considered in more detail, the cylindricity of the hole is not bad, but the variation in the diameter size is large. On the other hand, if centerless grinding is applied to the processing of the needle, control on a submicron basis is possible. Based on the above-mentioned fact, matching grinding is performed in the previous step, in which the inner diameter of the hole of the body member is ground and the outer diameter of the needle member is ground so as to match the finished dimension of the hole.

[0003] Fig. 4 shows an example of "a pair of a hole in a body and a needle as a shaft to be fitted therein" to which the present invention is applied. A pair of a cylindrical body 1a having a concave cylindrical surface hole and a simple cylindrical needle 2a is shown.
b shows a pair of the needle valve 2b, and (C) shows a pair of the pump body 1c and the plunger 2c with a flange. The application range of the present invention is not limited to this, and can be widely applied to a pair of a member having a needle-shaped cylindrical surface (referred to as a needle member) and a member having a concave cylindrical surface (referred to as a body member). .

FIG. 5 is a schematic view showing a known example in which the outer peripheral surface of a needle member is matched and ground in accordance with a hole of a body member. The matching grinding device of this known example is roughly divided into a body inner diameter grinding section (A) and a needle outer diameter grinding section (B). The body inner diameter grinding unit includes the internal grinding machine 1 as a main component and includes an automatic control device 3a dedicated to the internal grinding machine. A body material 1d, which is a workpiece, is transported as shown by an arrow a and mounted on the spindle unit 3b, and the inner peripheral surface of the hole is ground by the inner grinding unit 3c. The inner diameter of the body member that has been ground is measured by the in-process gauge 3d. The measured value is input to the automatic control device 3a, and it is determined whether or not the measured value is within a predetermined tolerance. As a result of the above determination, the inspection-passed product is placed on the pallet 4A dedicated to the body as shown by the arrow b, and the grinding process of the body 1 is completed.

The needle outer diameter grinding section (B) has a centerless grinding machine 6 as a main component. The body 1 that has completed the preceding process is conveyed to the inner diameter measuring device 7 as indicated by an arrow c, and the inner diameter is precisely measured. The measured value is input as an electric signal to the automatic controller 6a dedicated to the centerless grinding machine as shown by an arrow d. The basic main components of the centerless grinding machine are a grinding wheel GW and an adjusting wheel R
W and a blade (hidden in the figure). The adjusting grindstone RW is mounted on the slide 6b, and is cut and fed to the left in the figure by the servo motor 6c.
In addition, it is also possible to configure so that the grinding wheel GW is cut and fed rightward in the figure. The automatic control device 6a to which the inner diameter measurement data (arrow d) is input controls the cutting feed of the servomotor 6c according to the value of the inner diameter measurement data, and is appropriately fitted to the inner diameter of the body member. It is automatically adjusted so that it can be finished by grinding to the outside diameter of the needle. The needle material 2d is loaded on a centerless grinding machine 6 as shown by an arrow e and is ground and finished to an appropriate size. Then, the needle material 2d is unloaded as shown by an arrow g and mounted on a pallet 8 dedicated to the needle. Correspondingly,
The handling device 9 conveys the body member 1 that has been measured by the inner diameter measuring device 7 to a pallet 4B dedicated to the body as indicated by an arrow h.

[0006]

In the matching grinding technique of the prior art shown in FIG. 5 described above, after the inner peripheral surface of the body having a large variation in dimensions is ground, the outer peripheral surface of the needle which can be ground with high precision is ground. The process sequence of performing centerless grinding is rational, and a fitting accuracy on the order of submicrons can be obtained. However, since the body inner diameter grinding section (A) and the needle outer diameter grinding section (B) are controlled independently of each other by the respective automatic controllers 3a and 6a, the whole matching grinding equipment is unified. Insufficient control. In particular, there is waste (similar duplication of work) that the inner diameter measurement data by the in-process gauge 3d of the body inner diameter grinding unit is not fully utilized, and the measurement is performed again by the inner diameter measuring device 7 of the needle outer diameter grinding unit. Since the conveying path (arrows b, c, and h) of the body member 1 is complicated, and the body member 1 and the needle member 2 that have been subjected to matching grinding are mounted on mutually different pallets, matching grinding has been completed. However, special consideration is required for securing a matching pair in the next process (prevention of mistakes), and the management cost is raised. The present invention has been made in view of the above circumstances, and is controlled in a unified manner as a whole equipment, there is no waste in the measurement process, the transport route of the workpiece is simple, and at the end of matching grinding. It is an object of the present invention to provide a matching grinding technique in which “the pair of the body member and the needle member that have been subjected to matching grinding” is clear, and there is no risk of being mistaken.

[0007]

The basic principle of the present invention created to achieve the above object will be briefly described below with reference to FIG. 1 corresponding to one embodiment. That is, by improving the matching technique between the body material 1d having the hole and the needle material 2d, a rational grinding process can be automatically advanced, and the matching-ground body member and needle member can be combined with each other. In order to ensure the even number relationship, the inner peripheral surface grinding mechanism 10 and the outer peripheral surface grinding mechanism 11 are integrally controlled by the integrated automatic control device 12. In particular, the inner diameter measuring device 10c of the inner peripheral surface grinding mechanism 10
Is input to the general automatic control device 12, and the general automatic control device 12 instructs the outer peripheral surface grinding mechanism 11 to "set the needle material 2d to a size suitable for the measurement value j."
A dimension command signal (arrow k) for grinding and finishing the outer periphery of the workpiece is given.

[0008] Based on the above principle, the method according to the first aspect of the present invention provides a method for grinding a concave cylindrical surface hole formed in a body member so as to fit the hole.
In the method of grinding and finishing the outer peripheral surface of the needle member with a centerless grinding machine, the inner diameter of the hole of the body member that has been ground is measured, and the measured inner diameter value is input to the integrated automatic control device as an electrical signal. The central automatic grinding machine provided a dimension command signal to the "means for adjusting the outer diameter of the workpiece" of the centerless grinding apparatus to grind the needle member, and the inner diameter was measured. The body member and the ground needle member are paired and transferred to the next step. According to the above-described method of the first aspect of the present invention, the total automatic control device gives a dimension command signal to the centerless grinding device based on the inner diameter (measured value) of the body member that has been ground and finished. The operations do not overlap, and reasonably high-precision matching grinding can be performed.

According to a second aspect of the present invention, in addition to the constituent elements of the first aspect of the present invention, the outer diameter of the centerlessly ground needle member based on the dimension command signal is determined. It is measured by an air micro, and the value of the measured outer diameter of the needle member is input as an electric signal to the overall automatic control device, and the overall automatic controller causes the inner diameter of the hole of the body member and the needle to be measured. The method is characterized in that the outer diameter of the member is compared with that of the member, and it is determined whether or not the inspection of the grinding operation of the needle member has passed according to a program given in advance. According to the method of the present invention described above, the outer diameter of the ground needle member and the inner diameter of the body member are compared by the integrated automatic control device, and the fitting as a result of the matching grinding is performed. It can be automatically checked whether the accuracy is at a predetermined level.

According to a third aspect of the present invention, in addition to the constituent features of the first or second aspect of the present invention, in addition to the constituent elements of the method of the first or second aspect of the present invention, the outside of the virtual cylindrical surface which is an extension of the ground surface of the needle member is provided. When there is no projecting portion, the centerless grinding is performed by a through feed method, and the position of the centerless grinding machine in the cutting direction of the adjusting grindstone or the grinding grindstone is adjusted by the dimension command signal. . According to the method of the invention described in claim 3 described above, the needle member as a workpiece can be elongated by through-feed grinding unique to the centerless grinding method without impairing the effects of the invention methods of claims 1 and 2. It can be self-propelled in the direction to perform the grinding finish with high efficiency.

According to a fourth aspect of the present invention, in addition to the constituent features of the third aspect of the invention, when the end face or the vicinity of the end face of the needle member is ground and finished to a shape other than a cylindrical face, In the grinding wheel of the centerless grinding machine, a non-cylindrical surface portion having a larger diameter than a cylindrical surface grinding portion for grinding the outer peripheral surface of the needle member is provided, and the end surface or the vicinity of the end surface of the needle member is subjected to through-feed grinding. Grinding by pressing against the non-cylindrical surface of the grinding wheel by the thrust, or before or after the step of grinding the outer peripheral surface of the needle member, the end surface or the vicinity of the end surface of the needle member is formed into a predetermined shape by a centerless method. It is characterized by grinding. According to the fourth aspect of the invention described above, the non-cylindrical surface (to be formed at the end of the needle member) without impairing the effect of the third aspect of the invention (particularly, the advantage of through feed grinding). For example, conical surfaces) can be ground and finished in the same process with high efficiency and high accuracy.
The range of application of the method according to the third aspect of the present invention can be expanded, and its practical effect can be increased.

According to a fifth aspect of the present invention, in addition to the components of the first or second aspect of the present invention,
Regardless of whether or not there is a portion that protrudes outward from a virtual cylindrical surface that is an extension of the grinding finish surface of the needle member, the centerless grinding is performed by the in-feed method, and the centerless grinding is performed by the dimension command signal. The cutting operation of the adjusting wheel or the grinding wheel of the machine is controlled. The method of the invention described in claim 5 described above can also be applied to a case where the through-feed grinding according to claim 3 cannot be performed due to the fact that the needle member as a workpiece has a projection or the like. In-feed grinding can be performed without impairing the effect of the method according to the first or second aspect. Thus, the large-diameter portion and the small-diameter portion of the stepped cylindrical needle member, which cannot be performed by the through-feed grinding, can be simultaneously ground and finished, and high-efficiency matching grinding can be performed.

According to a sixth aspect of the present invention, in addition to the constituent elements of the fifth aspect of the invention, when the end face or the vicinity of the end face of the needle member is ground to a shape other than a cylindrical face, On the grinding wheel of the centerless grinding machine, in advance, a non-cylindrical surface portion having a diameter larger than the cylindrical surface for grinding the outer peripheral surface of the needle member is formed, and the end surface or the vicinity of the end surface of the needle member, By the non-cylindrical surface portion of the grinding wheel, the non-cylindrical surface is ground and finished simultaneously with the grinding of the outer peripheral surface, or before or after the step of grinding the outer peripheral surface of the needle member, or the center of the needle member by a centerless method. The end surface or the vicinity of the end surface is ground into a predetermined shape. According to the method of the invention described in claim 6, the advantages in in-feed grinding (the grinding can be performed even if there are protrusions, and the simultaneous grinding of the stepped cylindrical surface can be performed if necessary). Without compromising
Furthermore, the vicinity of the end of the needle member can be ground and finished to a non-cylindrical surface (for example, a conical surface). Thereby, the applicable range of the method according to claim 5 is expanded, and its practical value is increased.

According to a seventh aspect of the present invention, there is provided an apparatus for grinding an inner peripheral surface for grinding a hole formed in a body member into a concave cylindrical surface, and a needle member fitted to the concave cylindrical surface. An outer peripheral surface grinding mechanism comprising a centerless grinding machine for grinding and finishing the outer peripheral surface; and a comprehensive automatic control device for controlling main components of the inner peripheral surface grinding mechanism and the outer peripheral surface grinding mechanism. The peripheral surface grinding mechanism measures the internal diameter of the body member that has been ground and outputs the measured value as an electric signal, and an integrated automatic unit that controls the external peripheral surface grinding machine and the internal peripheral surface grinding machine. A control device;
Wherein the integrated automatic control device has a function of inputting the measured value of the inner diameter dimension and controlling “means for adjusting the finished dimension of the centerless grinding machine”. And According to the apparatus of the seventh aspect described above, the method of the first aspect of the present invention can be easily implemented, and its effect can be sufficiently exhibited.

According to an eighth aspect of the present invention, in addition to the constitutional requirements of the seventh aspect of the present invention, the centerless grinding machine is configured to reduce a diameter of an outer peripheral surface of a needle member which is a workpiece. Measuring means, wherein the measuring means is adapted to input a measured value to the general automatic control device, and the general automatic control device comprises: It is characterized in that it has a function of comparing the measured value of the member outer peripheral surface diameter with the measured value of the member outer peripheral surface to determine whether or not the difference between them is within a predetermined range. According to the apparatus of the eighth aspect described above, the method of the second aspect can be easily implemented, and the effect thereof can be sufficiently exhibited.

According to a ninth aspect of the present invention, in addition to the constituent features of the seventh or eighth aspect of the present invention, the adjusting wheel of the centerless grinding machine is formed on a rotating single-leaf hyperboloid. Alternatively, a means for truing the rotating single-leaf hyperboloid is provided, and has a structure capable of providing a feed angle, so that through-feed grinding can be performed, and the grinding wheel of the centerless grinding machine is provided with a work piece. The end surface or the vicinity of the end surface of the needle member is formed into a non-cylindrical surface by grinding. According to the apparatus of the ninth aspect described above,
The method according to the third aspect of the present invention can be easily carried out, and its effect can be sufficiently exhibited.

According to a tenth aspect of the present invention, in addition to the constituent features of the ninth aspect of the present invention, the grinding wheel of the centerless grinding machine has a cylindrical surface for grinding the outer peripheral surface of the needle member. And having a non-cylindrical surface portion for grinding the vicinity of the end of the needle member, or a "non-cylindrical surface near the end of the needle member separate from the centerless grinder. And a mechanism for grinding and finishing in a shape. According to the apparatus of the tenth aspect described above, the method of the fourth aspect can be easily implemented, and its effect can be sufficiently exhibited.

According to an eleventh aspect of the present invention, in addition to the constituent features of the tenth aspect of the present invention, the centerless grinding machine has a structure capable of in-feed grinding, and The adjusting grindstone of the grinding machine is formed in such a shape that the outer peripheral surface of the needle member as the workpiece can be ground and finished to a cylindrical surface and at the same time the vicinity of its end can be ground and finished to a non-cylindrical surface, or the centerless grinding machine And a mechanism for grinding and finishing the vicinity of the end of the needle member to a non-cylindrical surface separately from the outer peripheral surface grinding mechanism comprising: According to the apparatus of the eleventh aspect described above, the method of the sixth aspect can be easily implemented, and its effect can be sufficiently exhibited.

[0019]

FIG. 1 is a schematic view showing one embodiment of a matching grinding apparatus according to the present invention. However, the drawings are simplified so as to facilitate the reading, and the scale of each component is not uniform. The main components of this embodiment are an inner peripheral grinding mechanism 10, an outer peripheral surface grinding mechanism 11 composed of a centerless grinding machine, and a comprehensive automatic control device 12 for comprehensively controlling these mechanisms. The material 1d of the body member is
It is conveyed to the spindle unit 10a as shown by the arrow i, and the inner peripheral surface is ground and finished to a concave cylindrical surface by the inner grinding wheel unit 10b. The inner diameter of the body member that has been ground is measured by an inner diameter measuring device 10c, and the measured value is indicated by an arrow j.
Is input to the general automatic control device 12 as follows. The integrated automatic control device 12 to which the measured value of the inner diameter is input gives a dimension command signal (arrow k) to the servo motor 11b driving the slide 11a of the outer peripheral surface grinding mechanism 11. The body 1 for which the measurement of the inner diameter has been completed is unloaded as indicated by an arrow m, and is placed on the matching pallet 15.

The needle material 1d of this embodiment has a simple cylindrical surface to be ground, and protrudes from a virtual cylindrical surface (shown by a virtual line and denoted by reference numeral 2d ') which is an extension of the surface to be ground. Does not have any part. In such a case, when the through-feed grinding is performed by the outer peripheral surface grinding machine 11, high-efficiency grinding can be performed by the self-propelled action of the workpiece, which is unique to the through-feed grinding. In addition, the virtual cylindrical surface 2
If there is a portion protruding from d, infeed grinding is performed. This in-feed grinding can be performed without any protruding portion, and a plurality of concentric cylindrical surfaces having different diameters can be simultaneously finished. The needle material 2d is loaded into an outer peripheral surface grinding mechanism 11 composed of a centerless grinding machine as shown by an arrow n, and is finished to an outer diameter adjusted by a servo motor 11b which receives a dimension command signal (arrow k). . The external diameter is not the dimension specified in the design drawing, but is set so that an appropriate fitting state can be obtained with respect to the measured internal diameter of the body 1 (arrow j).
Is the calculated dimension. The needle member after the grinding is unloaded as indicated by an arrow p, and is received by an air blow 13 and conveyed to an air micro 14 as indicated by an arrow q.
After the diameter of the outer peripheral surface that has been ground is measured, the outer peripheral surface is mounted on the matching pallet 15 as indicated by an arrow r. The above-mentioned matching plate is a pallet on which a matched finished product of the workpiece to be machined is placed. The measurement value (arrow s) by the air micro 14 is input to the general automatic control device 12. The integrated automatic control device 12
"Measured value j of body diameter previously input and stored"
Is compared with the "newly input needle outer diameter measurement value s" to check whether the difference between the two values (fitting clearance) is within a predetermined range. As described above, the matching grinding apparatus of the embodiment in FIG. 1 automatically performs all the steps of matching grinding between the body member and the needle member,
The body and the needle that pass the inspection are carried out as a pair.

FIG. 2 shows an embodiment different from FIG. 1 described above. Hereinafter, differences from the above-described embodiment (FIG. 1) will be extracted and described. The needle material 2e in the present embodiment is:
It has a cylindrical surface to be processed and has a non-cylindrical surface (a conical surface in this example) at its end. An end grinding mechanism 16 is provided next to the outer peripheral surface grinding mechanism. Details of the edge grinding mechanism will be described later with reference to FIG. In this embodiment (FIG. 2), the cylindrical surface of the needle material 2e can be ground and finished so as to be properly fitted to the inner peripheral surface of the body 1 in the same manner as in the embodiment (FIG. 1). In addition, processing such as sharpening the end of the needle material 2e into a conical surface can be performed. Such a function is suitable for, for example, grinding and finishing the needle valve illustrated in FIG. 4B described above.
The workpiece whose outer peripheral surface has been ground and finished by the outer peripheral surface grinding mechanism 11 is conveyed to the end grinding mechanism 16 as shown by an arrow t, and the conical surface at the end is ground and finished. When the conical surface is ground and finished while the workpiece (needle member) is supported on the outer cylindrical surface in this manner, the concentricity between the cylindrical surface and the conical surface is perfect. Although not shown, the outer peripheral surface grinding mechanism 11 and the end grinding mechanism 16 shown in FIG. 2 are not separate mechanisms, and the outer peripheral cylindrical surface and the end conical surface are formed by the same centerless grinding mechanism. Can be easily ground simultaneously by applying a known technique. Next, a technique of grinding and finishing the conical surface of the end of the needle will be described.

FIG. 3 is an enlarged detailed view of the end grinding mechanism 16 shown in FIG. Taking only the configuration shown in FIG. 3 is a known centerless grinding technique, in which GW is a grinding wheel, RW is an adjusting wheel, and B is a blade. Grinding wheel (GW) 11e is being trued into stepped grinding wheel, 11e ₁ is a cylindrical surface for grinding the outer peripheral surface of the workpiece, 11e ₂ has a conical surface for same grinding conical surface. The adjusting grindstone 11c supports the needle 2 in cooperation with the blade B, and controls the rotation thereof by friction transmission (while the needle 2 is rotated at a high speed by the grinding grindstone GW, braking is performed by the frictional force. ing). When the adjusting wheel 11c is formed in a columnar shape as shown in the figure, and the adjusting wheel axis is supported in parallel with the grinding wheel axis, infeed grinding can be performed. In the in-feed grinding, the outer diameter of the needle 2 can be set to a desired value by controlling the cutting feed (arrow I) of the adjusting grindstone 11c. The conical surface 2f of the needle 2 can be ground and finished in the same step as in the infeed grinding or in a separate step. In this case, the thrust must be given to the needle 2 in the downward direction in the drawing by some method. No. A known method (for example, blowing with pressurized air) may be applied to apply thrust. When the outer peripheral surface of the adjusting grindstone RW is formed as a rotating single-blade hyperboloid and a feed angle is given, through feed grinding can be performed.
According to through feed grinding, a thrust is generated in the workpiece in the axial direction. The needle having no conical surface can be driven by the above-mentioned thrust to perform the matching grinding with high efficiency, b. The needle having a conical surface can perform centerless grinding of the conical surface by pressing the conical surface of the needle against the conical surface of the grinding wheel by the aforementioned thrust.

[0023]

As described above, according to the embodiment of the present invention, the configuration and function of the embodiment are clarified. According to the method of the first aspect of the present invention, the inner diameter (measured value) of the finished body member is reduced. On the basis of this, the integrated automatic control device gives a dimension command signal to the centerless grinding device, so that the same measurement work does not overlap, and a reasonably high-precision matching grinding can be performed. According to the second aspect of the present invention, the overall automatic controller compares the outer diameter of the grounded needle member with the inner diameter of the body member, and the fitting accuracy as a result of the matching grinding is a predetermined value. It can be checked automatically whether it is a level or not. According to the third aspect of the present invention, the needle member as the workpiece is self-propelled in the longitudinal direction by through feed grinding unique to the centerless grinding method without impairing the effects of the first and second aspects of the invention. Thus, the grinding finish can be performed with high efficiency. According to the fourth aspect of the present invention, a non-cylindrical surface (for example, a conical surface) to be formed at the end of the needle member without impairing the effect of the third aspect of the invention (particularly, the advantage of through feed grinding). Can be ground with high efficiency and high precision in the same process, and the application range of the method of the present invention according to claim 3 can be expanded to increase its practical effect. The method according to the fifth aspect of the present invention can also be applied to the case where the through-feed grinding according to the third aspect cannot be performed due to the fact that the needle member which is the workpiece has a projection. According to the method of the present invention, the advantage of in-feed grinding is impaired (the grinding can be performed even if there is a protrusion, and the simultaneous grinding of the stepped cylindrical surface is possible if necessary). In addition, the vicinity of the end of the needle member can be further ground to a non-cylindrical surface (for example, a conical surface). Thereby, the applicable range of the method according to claim 5 is expanded, and its practical value is increased.

According to the apparatus of the present invention, the method of the present invention can be easily carried out, and its effect can be sufficiently exhibited. According to the apparatus of the eighth aspect, the method of the second aspect can be easily implemented, and the effect can be sufficiently exhibited. According to the ninth aspect of the present invention, the effect of the third aspect of the present invention can be easily achieved, and the effect thereof can be sufficiently exhibited. According to the tenth aspect of the present invention, the effect of the fourth aspect of the present invention can be easily achieved, and the effect can be sufficiently exhibited. According to the apparatus of claim 11,
The method according to claim 6 can be easily carried out, and the effect can be sufficiently exhibited.

[Brief description of the drawings]

FIG. 1 is a diagram in which a control system is added to a schematic plan view showing one embodiment of the present invention.

FIG. 2 is a diagram in which a control system is added to a schematic plan view showing an embodiment different from FIG. 1 described above.

FIG. 3 is an enlarged detailed view of the end grinding mechanism 16 in FIG. 2 described above.

FIG. 4 is an exploded view showing an example of a pair of a body having a hole and a needle having a cylindrical surface.

FIG. 5 is a diagram in which a control system is added to a schematic plan view showing a conventional example of matching grinding.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body member, 1a ... Cylindrical body, 1b ... Valve body, 1c ... Pump body, 1d ... Body material, 2 ... Needle member, 2a ... Cylindrical needle, 1c ... Flanged plunger, 2d, 2e ... Needle material, 3 ... Internal grinding machine, 3a: Automatic internal grinding control device, 3b: Spindle unit, 3c: Internal grinding wheel unit, 3b: In-process gauge, 4A, 4B: Body pallet, 6: Centerless grinding machine, 7: Inner diameter measuring device, Reference numeral 8: needle pallet, 9: handling device, 10: inner peripheral surface grinding mechanism, 10a: spindle unit, 10b: inner grinding wheel unit, 10c: inner diameter measuring instrument, 11: outer peripheral surface grinding mechanism, 11a: slide, 11
b: servo motor, 11e: stepped grinding wheel, 11e ₁ ...
Cylindrical surface, 11e ₂ ... conical surface, 13 ... air blow, 14 ...
Air micro, 15: Matching pallet, 16: Edge grinding mechanism.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B24B 49/08 B24B 49/08 (72) Inventor Shuichi Kanazawa 578-2 Zao Ueno, Yamano City, Yamagata Prefecture Precision Co., Ltd. F-term (reference) 3C029 BB03 3C034 AA02 AA05 AA13 BB79 BB94 CA02 CA04 DD02 3C043 AA08 AA10 CC03 DD06

Claims (11)

[Claims] 1. A method of grinding and finishing a concave cylindrical surface hole formed in a body member and a centerless grinding machine on an outer peripheral surface of a needle member so as to be adapted to the hole. Measure the inner diameter of the hole in the finished body member, input the measured inner diameter value as an electrical signal to the integrated automatic controller, and adjust the outer diameter of the work piece of the centerless grinding machine. Means), a dimension command signal is given by the comprehensive automatic control device to grind the needle member, and the body member whose inner diameter is measured and the ground needle member are paired with each other to make the next A matching grinding method for a needle, which is transferred to a process. 2. The method according to claim 1, wherein the outer diameter of the needle member, which has been centerlessly ground based on the size command signal, is measured by an air micrometer, and the measured outer diameter value of the needle member is used as an electrical signal. An input to the integrated automatic control device, the integrated automatic control device compares the inner diameter of the hole of the body member with the outer diameter of the needle member, and inspects the grinding operation of the needle member according to a program given in advance. 2. The method according to claim 1, wherein it is determined whether or not the test is successful. 3. When there is no portion projecting outward from an imaginary cylindrical surface which is an extension of the grinding finish surface of the needle member, the centerless grinding is performed by a through-feed method, The needle matching grinding method according to claim 1 or 2, wherein a position of the adjustment grindstone or the grinding grindstone of the centerless grinder in the cutting direction is adjusted. 4. When grinding the end surface or the vicinity of the end surface of the needle member into a shape other than a cylindrical surface, a grinding wheel of the centerless grinding machine is provided with a cylindrical surface grinding portion for grinding the outer peripheral surface of the needle member. Also, a large-diameter non-cylindrical surface portion is provided, and the end surface or the vicinity of the end surface of the needle member is pressed against the non-cylindrical surface of the grinding wheel by thrust of through feed grinding, or the outer peripheral surface of the needle member 4. The needle matching grinding method according to claim 3, wherein the end surface or the vicinity of the end surface of the needle member is ground into a predetermined shape by a centerless method before or after the step of grinding the needle. 5. The centerless grinding is performed by an in-feed method regardless of the presence or absence of a portion that protrudes outward from a virtual cylindrical surface that is an extension of the grinding surface of the needle member. The method for matching grinding of a needle according to claim 1 or 2, wherein a cutting operation of the adjusting grindstone or the grinding grindstone of the centerless grinder is controlled. 6. When grinding the end surface or the vicinity of the end surface of the needle member into a shape other than a cylindrical surface, a cylinder for grinding the outer peripheral surface of the needle member in advance on a grinding wheel of the centerless grinding machine. A non-cylindrical surface portion having a diameter larger than that of the surface is formed, and the end surface or the vicinity of the end surface of the needle member is ground to a non-cylindrical surface simultaneously with the outer peripheral surface grinding by the non-cylindrical surface portion of the grinding wheel. Or before or after the step of grinding the outer peripheral surface of the needle member, characterized in that the end surface or the vicinity of the end surface of the needle member is ground into a predetermined shape by a centerless method, according to claim 5, wherein Needle matching grinding method. 7. An inner peripheral surface grinding mechanism for grinding and finishing a hole provided in a body member to a concave cylindrical surface, and a centerless grinding and finishing an outer peripheral surface of a needle member fitted to the concave cylindrical surface. An outer peripheral surface grinding mechanism comprising a grinding machine; and an integrated automatic control device for controlling main components of the inner peripheral surface grinding mechanism and the outer peripheral surface grinding mechanism. The inner peripheral surface grinding mechanism is ground and finished. Measuring the inner diameter of the body member, and outputting the measured value as an electric signal; and an overall automatic control device for controlling the outer peripheral surface grinding machine and the inner peripheral surface grinding machine. The above-mentioned overall automatic control device has a function of controlling the “means for adjusting the finish size to be processed of the centerless grinding machine” by inputting the measured value of the inner diameter dimension, Matching grinding Location. 8. The centerless grinding machine has a means for measuring a diameter of an outer peripheral surface of a needle member which is a workpiece, and the measuring means sends a measured value to the general automatic control device. While inputting, the integrated automatic control device compares the measured value of the inner diameter of the body member with the measured value of the outer diameter of the needle member, and determines that the difference between the two is within a predetermined range. The needle matching grinding apparatus according to claim 7, wherein the apparatus has a function of determining whether or not there is a needle. 9. The adjusting whetstone of the centerless grinding machine,
It is formed on the rotating single-leaf hyperboloid, or is provided with means for truing on the rotating single-leaf hyperboloid, and has a structure for obtaining a feed angle, so that through-feed grinding can be performed. The grinding wheel has a shape in which the outer peripheral surface of a needle member as a workpiece is ground and finished to a cylindrical surface, and a shape near the end of the needle member can be ground and finished to a non-cylindrical surface. A needle matching grinding apparatus according to claim 8. 10. The grinding wheel of the centerless grinding machine has a cylindrical surface portion for grinding the outer peripheral surface of the needle member, and has a non-cylindrical surface shape for grinding the vicinity of an end portion of the needle member. The method according to claim 9, further comprising a part, or a mechanism for grinding and finishing the vicinity of the end of the needle member into a non-cylindrical surface separately from the centerless grinding machine. Needle matching grinding device. 11. The centerless grinding machine has a structure capable of in-feed grinding, and the adjusting grindstone of the centerless grinding machine is configured to grind the outer peripheral surface of a needle member as a workpiece to a cylindrical surface. At the same time, it is shaped so that the vicinity of its end can be ground to a non-cylindrical surface, or it can be ground to a non-cylindrical surface near the end of the needle member separately from the outer peripheral surface grinding mechanism consisting of the centerless grinding machine. 11. The needle matching grinding device according to claim 10, further comprising a mechanism for performing the grinding.