JP3187340U - Lock axial force test equipment - Google Patents

Abstract

A lock axial force test apparatus for a machine tool is provided.
A lock axial force test apparatus includes a main body, a load meter, a display, two fixed members, and two top members and a lock member. A main shaft 11 and a fixing base 12 are provided on the main body, and an intermediate member 20 is provided between the main shaft and the fixing base. Both ends of the load cell are connected to two fixed members, respectively. The two top members are in contact with the two fixed members, respectively, and are in contact with the main shaft. The one top member locks on the intermediate member. The lock member is screwed to the end portion of the main shaft, and the lock member presses the two top members, the two fixed members, and the load meter, and further presses the intermediate member. The tightening force of the lock member acts on the load meter to generate a load signal, and the indicator displays the corresponding axial force value based on the load signal, and this axial force value is that is, the intermediate member is connected to the fixed base It is the axial force received when
[Selection] Figure 1

Description

The present invention provides a hard shell suitcase for a machine tool having a high production speed and a good yield.

FIG. 10 shows a lock state diagram of a lock member of a conventional machine tool. It has a plurality of bearings 93 arranged linearly, and a main shaft 91 that rotates at a high speed of the machine tool is provided on a fixed base 92 so as to be rotatable. The lock member 94 is a precision nut and is locked to the main shaft 91 so as not to allow the bearing 93 to escape from the fixed base 92. It is quite important that the lock member 94 is screwed onto the main shaft 91 using a wrench capable of measuring torque and presses and positions the bearing 93 so that the bearing 93 receives a pressing force, that is, an axial force.
There is standard data for each country on how much axial force the bearing 93 needs to be provided on the fixed base 92. A general contractor uses a measuring device to place the main shaft 91 and the fixing base 92 on the measuring device and when the lock member 93 is screwed, a torque value for screwing the lock member on the measuring device, that is, The axial force of the bearing 93 is measured.
In this way, at the time of assembly, the manufacturer can determine that the intermediate member 93 receives a prescribed axial force after rotating the torque to a predetermined torque value with a wrench capable of measuring torque. However, this type of prior art has the following defects: a) Since there is a difference between the state where the spindle is provided on the machine tool and the state where the spindle is provided on the measuring device, the locking member measured by the measuring device is screwed Applying matching torque to machine tools, error is likely to occur; b) Customization of measuring equipment increases cost, and it is necessary to inspect and calibrate by the original manufacturer after a certain period of use, maintenance costs And the fixing base 92 must be separately manufactured and provided on the measuring device, which further increases the cost; c) The fixing socket 92 is separately manufactured and provided on the measuring device, and the fixing base 92 and the machine tool The axial force obtained by the difference is not accurate.

JP 2012-122606 A JP 2012-117039 A JP 2009-281426 A

  An object of the present invention is to provide a load meter provided in a lock axial force test apparatus of a machine tool so that an axial force of an intermediate member can be reliably obtained when the lock member is rotated.

  The present invention is composed of a main body, a load meter, a display, two fixed members, two top members, and a lock member. A main shaft and a fixing base are provided on the main body. An intermediate member is provided between the main shaft and the fixed base. Both ends of the load cell are connected to two fixed members, respectively. The two top members are in contact with the two fixed members, respectively, and are in contact with the main shaft. The one top member is locked to the intermediate member. The lock member is screwed into the end portion of the main shaft, and the lock member presses the two top members, the two fixed members, and the load meter, and further presses the intermediate member. The tightening force of the lock member acts on the load meter to generate a load signal, and the indicator displays the corresponding axial force value based on the load signal. This is the axial force that is applied to the joint.

  The advantages of the present invention are as follows: a) The machine tool manufacturer purchases the lock axial force test device of the present invention and installs it directly on the main spindle 11 of the machine tool, and directly measures how much rotational torque the lock member 80 requires. Can be adapted to the prescribed axial force of the intermediate member 20, eliminating the need to purchase a separate detector and reducing costs; b) the manufacturer directly on the spindle 11 of the machine tool to be produced The rotational torque is measured, and thus the difference in the basic structure of the machine tool to be produced is not large, that is, the difference between each spindle 11 and the fixed base 12 is not large. The locking member 80 is screwed onto the end of the main shaft 11 and has an axial force that conforms to the regulations; c) as shown in FIG. 5, when the main shaft 11 has a different diameter, the first top member 50 of the present invention. Second covering The portion 51 and the fifth covering portion 71 of the second top member 70 are provided on the main shaft 11 in accordance with the outer diameter of the main shaft 11, and thus, by simply exchanging these two members, a plurality of main shafts are provided. 11 diameters.

It is a three-dimensional exploded view of the lock axial direction force test device of the present invention. It is a three-dimensional view of the lock axial direction force test device of the present invention. It is a front view of the lock axial direction force test device of the present invention. It is sectional drawing of the BB location of FIG. 3 of this invention. It is a three-dimensional view of the first top member and the second top member of the present invention. It is a three-dimensional exploded view of the second embodiment of the present invention. It is a three-dimensional exploded view of the third embodiment of the present invention. It is a three-dimensional exploded view of the fourth embodiment of the present invention. It is sectional drawing of 4th Example of this invention. It is a three-dimensional exploded view of the lock state of the conventional lock member.

As shown in FIGS. 1 to 4, the lock axial force test apparatus of the present invention includes a main body, an intermediate member 20, a load meter 30, a first fixed member 40, a first top member 50, and a plurality of members. The coupling member 54, the second fixing member 60, the plurality of screwing members 63, the second top member 70, and the lock member 80.
The main body 10 includes a main shaft 11 and a fixed base 12. The main shaft 11 is a main shaft 11 which is provided in a machine tool or other equipment and rotates at a high speed. The fixed base 12 is a part of the machine base. The intermediate member 20 is provided between the main shaft 11 and the fixed base 12, supports the main shaft 11 on the fixed base 12 so as to be capable of rotating on the shaft, and is generally a bearing. When there are a plurality of intermediate members 20, they are arranged linearly. The load cell 30 is a commercially available LOAD CELL, and changes its electric resistance by being deformed under pressure or tension by a strain gauge, and detects a numerical value by a Wheatstone bridge. The greater the deformation, the greater the output, i.e. the greater the load. The load meter 30 is provided with a first end 31, a second end 32, and a display 33. The first end 31 receives a force and transmits it to the second end 32, and the display 33 displays the load. This load is equal to the axial force. The axial force is an axial force received when the intermediate member 20 is coupled to the fixed base 12. The second end 32 is provided with a plurality of first fixing portions 321, and the first fixing portion 321 has a screw hole shape. The first fixing member 40 is coupled to the first end 31. The first fixed member 40 includes a storage chamber 41 and stores the load meter 30. The first fixed member 40 includes a first covering portion 42, a first coupling portion 43, and a second coupling portion 44. The first connecting portion 43 has a circular groove shape. A through groove 45 is provided on the circumferential surface of the first fixed member 40 to draw out the connection line of the display device 33. The first top member 50 is accommodated and installed in the first coupling portion 43 having a circular groove shape and is locked to the first fixing member 40. The first top member 50 is provided with a second covering portion 51 that covers the main shaft 11. The first top member 50 protrudes from the third covering portion 52 and covers the first covering portion 42 of the first fixing member 40. A plurality of third coupling portions 53 are provided on the circumferential surface of the first top member 50. Each third coupling portion 53 has a slot shape. The plurality of coupling members 54 to which the third coupling portion 53 is fixed are the same quantity as the third coupling portion 53.
Each coupling member 54 is coupled to each third coupling portion 53 and accommodated and installed in the second coupling portion 44 of the first fixed member 40. The second fixing member 60 is coupled to the second end 32 of the load cell 30. The second fixing member 60 is provided with the same number of through holes 61 as the first fixed portions 321 of the load cell 30. A fourth covering portion 62 that penetrates the main shaft 11 is provided in the center of the second fixing member 60. Each screwing member 63 passes through the through hole 61 of the second fixing member 60 and is screwed into the first fixing portion 321 of the load meter 30, thereby coupling the second fixing member 60 and the second end 32 to each other. Let The second top member 70 abuts against the second fixed member 60. The second top member 70 is provided with a fifth covering portion 71 provided on the main shaft 11. The second top member 70 is provided with a first upper portion 72 and a sixth covering portion 73, the first upper portion 72 is locked on the intermediate member 20, and the sixth covering portion 73 is a second fixed member. The 60 fourth covering portions 62 are covered with each other.
The lock member 80 is screwed into the end of the main shaft 11. The lock member 80 sequentially presses the first top member 50, the first fixed member 40, the load meter 30, the second fixed member 60, and the second top member 70. The first upper portion 72 of the second top member 70 further compresses the intermediate member 20. The rotational torque of the lock member 80 acts on the load meter 30. The load meter 30 receives a load to generate a load signal, and the display 33 displays an axial force value based on the load signal. The axial force value is a force received in the axial direction when the intermediate member 20 is coupled to the fixed base 12. The lock member 80, the first top member 50, the first fixed member 40, the load meter 30, the second fixed member 60, and the second top member 70 press the intermediate member 20 between the main shaft 11 and the fixed base 12.
The form after the entire combination is as shown in FIG.

As shown in FIG. 5, since the main shaft 11 has different diameters, the second covering portion 51 of the first top member 50 and the fifth covering portion of the second top member 70 having a diameter matched to the outer diameter of the main shaft 11. 71 is provided on the main shaft 11.
That is, the lock axial force test apparatus of the present invention replaces the first top member 50 and the second top member 70 having different diameters according to the main shaft 11 having different diameters, thereby reducing the purchase cost of the members constituting the apparatus. You can save.

  As shown in FIG. 6, the number of the second coupling portions 44 of the first fixing member 40 is six, and the first coupling member 40 is annularly arranged. is there.

  As shown in FIG. 7, the first coupling portion 43 of the first fixing member 40 has a non-circular groove shape matching the cross section of the first top member 50, and the first top member 50 is formed on the first coupling portion 43. It is housed and does not have the coupling member 54.

  As shown in FIGS. 8 and 9, the fourth covering portion 62 of the second fixed member 60 is inserted through the main shaft 11, and the second top member 70 has a sixth covering portion 73. No.

  In the mechanism of the present invention, the lock member 80 is screwed onto the main shaft to act on the load meter 30, the load meter 30 obtains an excess weight, and the intermediate member 20 receives upon coupling to the fixed base 12 based on the load value. An axial force can be obtained.

  The advantages of the present invention are as follows: a) The machine tool manufacturer purchases the lock axial direction force test device of the present invention and installs it directly on the main spindle 11 of the machine tool. Can directly measure whether it is necessary and adapt to the prescribed axial force of the intermediate member 20, eliminating the need to purchase a separate detection device and reducing costs; b) the manufacturer The rotational torque is directly measured on the main spindle 11 of the machine. Thus, the difference in the basic structure of the machine tool to be produced is not large, that is, the difference between the main spindle 11 and the fixed base 12 is not large. The machine screws the lock member 80 into the end of the main shaft 11 by this rotational torque and has an axial force conforming to the regulation; c) when the main shaft 11 has a different diameter, as shown in FIG. First top member of the idea The 50 second covering portions 51 and the fifth covering portion 71 of the second top member 70 are provided on the main shaft 11 in accordance with the outer diameter of the main shaft 11, thus exchanging these two members. The diameter of the plurality of main shafts 11 can be adjusted only by this.

DESCRIPTION OF SYMBOLS 10 Main body 11 Main axis | shaft 12 Fixing base 20 Intermediate member 30 Load meter 31 1st end 32 2nd end 321 1st fixed part 33 Indicator 40 1st fixed member 41 Storage chamber 42 1st covering part 43 1st coupling part 44 Second coupling portion 45 Through groove 50 First top member 51 Second covering portion 52 Third covering portion 53 Third coupling portion 54 Connecting member 60 Second fixing member 61 Through hole 62 Fourth covering portion 63 Screw Joint member 70 Second top member 71 Fifth covering portion 72 First upper portion 73 Sixth covering portion 80 Lock member 91 Main shaft 92 Fixing base 93 Intermediate member 94 Lock member

Claims (6)

A main body provided with a spindle and a fixing base;
At least one intermediate member provided between the main shaft and the fixed base;
A first end for receiving a force from the lock member, a second end for transmitting the force, and an indicator for displaying the load, wherein the load is equal to the axial force, and the axial force is mutually in contact with the spindle axis. A load cell that is an overlapping force,
A first fixed member coupled to the first end of the load cell;
A first top member provided with a second covering portion that is in contact with the first fixed member and is placed on the main shaft;
A second fixed member that is coupled to the second end of the load cell and has a fourth covering portion that penetrates the main shaft at the center;
A second top member that is in contact with the second fixed member, provided with a fifth covering portion that covers the main shaft, and provided with a first upper portion that is locked onto the intermediate member;
The lock member is screwed onto the main shaft, and the first top member, the first fixed member, the load meter, the second fixed member, and the second top member are sequentially pressed, and the first upper member Presses the intermediate member, and the rotational torque of the lock member acts on the load cell to generate a load signal. The indicator displays an axial force value based on the load signal, and the shaft The directional force value is a lock axial force test device that is a force received in an axial direction when the intermediate member is coupled to the fixed base. The spindle is a spindle that rotates at high speed of a machine tool;
The fixed base is a partial structure of the machine tool,
The main shaft is rotatably provided on the fixed base, and the intermediate member is a bearing.
The second end of the load cell has a first fixed portion having a plurality of screw hole shapes, the second fixed member is provided with a plurality of through holes, and each of the through holes has a threaded member. Passing through and screwing into the first fixed portion to couple the second fixed member to the second end,
The first fixed member is provided with a storage chamber to store the load cell, and the first fixed member is provided with a first covering portion,
The first top member has a third covering portion that protrudes, and the third covering portion covers the first covering portion of the first fixing member,
The first fixing member is provided with a first coupling portion, and the first top member is accommodated and fixed in the first coupling portion,
2. The lock axial force test apparatus according to claim 1, wherein the second top member includes a sixth covering portion, and the sixth covering portion covers the fourth covering portion of the two fixed members. .   The first coupling part of the first fixing member has a non-circular groove shape, and the first top member has a shape that is adapted to be accommodated in the first coupling part in cross section. Lock axial force test device. The first fixing member of the first fixing member has a circular groove shape to receive and install the first top member, and the first fixing member has a second connecting portion,
The first top member peripheral surface is provided with a third coupling portion having six slot-like shapes, and further provided with six coupling members to couple the coupling member to the third coupling portion, The lock axial direction force test apparatus according to claim 2, wherein the coupling member is housed and installed in the second coupling portion of the first fixed member and the first top member is locked.   2. The lock axial force test apparatus according to claim 1, wherein inner diameters of a second covering portion of the first top member and a fifth covering portion of the second top member are matched with an outer diameter of the shaft.   The lock shaft direction force test apparatus according to claim 1, wherein the fourth covering portion of the second fixed member is put on the main shaft.

Images