TWI697369B - ER tool length setting aid - Google Patents

Abstract

The present invention is a tool length setting auxiliary device, which mainly includes a body. One end of the body is provided with a tapered rod. The tapered rod can be directly sleeved on the end surface of the knife handle and locked by a nut. The other end of the body is provided There is an accommodating hole. Both sides of the accommodating hole are provided with internal screw holes for screwing in a positioning screw and a locking screw respectively. The accommodating hole of the main body can accommodate a movable bolt. Correspondingly arranged long grooves are provided on the side, and the long grooves are respectively used for the positioning screw and the locking screw to extend and limit the range of the movable bolt telescopic movement in the containing hole. One end of the movable bolt is provided with an inner hole, the The inner hole accommodates an elastic element, and the other end of the elastic element abuts against the accommodating hole of the main body, pushing the movable bolt to extend toward the outer end of the accommodating hole, and the range of its telescopic movement is restricted by the long groove.

Description

ER tool length setting aid

The present invention is a tool length setting assistant, especially an "ER tool length setting assistant" applied to the tool length auxiliary measurement on the tool holder of the centering lathe.

Please refer to Figure 8, the center-moving lathe is arranged around the spindle 50 with at least one or more cutting tools 80, usually at least three cutting tools 80, the cutting tools 80 are mainly arranged around the spindle 50 The tool holder body 60 is provided with a tool holder 70 in the tool holder body 60. The tool holder 70 can lock various cutting tools 80 according to the cutting purpose or function, such as end mills, turning tools, cutting tools, and engraving milling tools. Knife...wait.

Please refer to Figures 8 and 9, the end face of the tool holder 70 is provided with an ER elastic collet 71. The ER elastic collet 71 can accommodate a cutting tool 80 and is locked by a nut 72. However, each When the cutting tool 80 is first installed with the handle 70, the tool length L must be corrected, and the tool length L must be re-calibrated when the cutting tool 80 is replaced with a new cutting tool 80 or discarded blades after the cutting edge is blunt. The lathe has about 10 to 15 cutting tools 80. If a part requires 10 cutting tools to complete the machining, the operator must calibrate the tool length L10 times during the first tool comparison, which is extremely labor-intensive and time-consuming. When the cutting edge is dulled and the cutting tool 80 or discarded inserts are replaced, the tool length L must be re-calibrated. Therefore, the operator of the centering lathe often needs to calibrate the tool length L. The time to calibrate the tool length L takes up a very large proportion. It is extremely time-consuming and keeps production costs high, and it is really awaiting improvement.

Install the elastic collet type tool holder 70. For the method of correcting the tool length L, please refer to Figure 9. Set the diameter of a workpiece 90 to Φ20mm. First, set the cutting tool 80 to the ER elastic collet in the tool holder 70 71. The nut 72 only slightly clamps the cutting tool 80, so that the cutting tool 80 can still move back and forth, and then the tool holder body 60 is moved to approach the workpiece 90, and a piece of paper 91 is placed against it. While holding the workpiece 90, the operator moves the cutting tool 80 so that the tip position of the tool is against the workpiece 90 and the paper 91, so that the tool length L can be determined, only adding the radius of the workpiece 90 (10mm) and the thickness of the paper 91 At this time, it is only necessary to lock the nut 72 to the cutting tool 80 to reset the tip position of the cutting tool 80 (the position of the central axis of the workpiece 90).

Although the position of the tip of the cutting tool 80 is reset to zero, the stability of the reset to zero is not good, mainly because the ER elastic collet 71 has elasticity. When the tip of the cutting tool 80 is against the workpiece 90 and the paper 91, When a force is applied to tighten the nut 72, the cutting tool 80 will shrink back due to the elasticity of the ER elastic collet 71, which affects the accuracy of the tool length L, often resulting in an error in the cutting size, and the tool must be recalibrated. The length causes trouble for users and needs improvement.

The tool length setting of the conventional center-moving lathe is mainly due to the elasticity of the ER elastic collet 71. When the tip of the cutting tool 80 is against the workpiece 90 and the paper 91, the cutting tool is tightened when the nut 72 is tightened. 80 will shrink back due to the elasticity of the ER elastic collet 71, which affects the accuracy of the tool length L, which often results in an error in the cutting size. The tool length must be re-calibrated, causing users' troubles.

The ER tool length setting auxiliary device of the present invention mainly includes a body. One end of the body is provided with a tapered rod. The tapered rod can be directly sleeved on the end surface of the knife handle and locked by a nut. The end is provided with an accommodating hole, and both sides of the accommodating hole are provided with internal screw holes, By screwing in a positioning screw and a locking screw respectively, a movable bolt can be accommodated in the accommodating hole of the main body. Both sides of the movable bolt are provided with correspondingly arranged long grooves for positioning screws and locks. The fixed screw accommodates and extends and restricts the movable bolt from telescoping and moving in the containing hole. One end of the movable bolt is provided with an inner hole for receiving an elastic element, and the other end of the elastic element abuts against the body In the accommodating hole, the movable bolt is pushed to extend toward the outer end of the accommodating hole, and the range of its telescopic movement is restricted by the long groove.

The ER tool length setting aid of the present invention completes the setting of the tool length after the tool holder moves. The user only needs to lock the movable bolt with the locking screw, and then the position of the tool length can be set. Remove the ER tool length setting aid and move it to the tool length measuring instrument to accurately measure the value of the tool length as the tool length reference for all cutting tools on the centering lathe. The cutting tool and ER After the tool length setting aid is compared, the difference is the compensation value. The tool length reset only needs to add the workpiece radius and the compensation value to make the tool length return to zero, and input the compensation value and the workpiece radius value into the computer. The length of the tool can achieve the effect of zeroing.

1‧‧‧ER Tool Length Setting Aid

10‧‧‧Ontology

11‧‧‧Taper rod

12‧‧‧Accommodating hole

121、122‧‧‧Internal screw hole

141‧‧‧Set screw

142‧‧‧Locking screw

20‧‧‧Activating bolt

211, 212‧‧‧Long slot

22‧‧‧Inner hole

23‧‧‧Conical end

24‧‧‧Elastic element

30‧‧‧Nut

50‧‧‧Spindle

60‧‧‧Knife holder body

70‧‧‧Knife handle

71‧‧‧ER elastic collet

72‧‧‧Nut

73‧‧‧Inner cone

80‧‧‧Cutting tool

81‧‧‧Taper rod

90‧‧‧Workpiece

L‧‧‧Tool length

C‧‧‧Compensation value

Figure 1 is a three-dimensional system diagram of the present invention

Figure 2 is a sectional view of the combination of the present invention

Figure 3 is a schematic diagram of the present invention assembled in the knife handle

Figure 4 is a schematic diagram of the present invention assembled in the tool holder body

Figure 5 is a schematic diagram of the knife length setting of the present invention

Figure 6 is a schematic diagram of the invention after the knife length is set

Figure 7 is a schematic diagram of the length difference between the cutting tool and the present invention

Figure 8 is a schematic diagram of the tool holder body and its cutting tools arranged on a conventional walking type lathe

Figure 9 is a schematic diagram of the conventional cutting tool setting tool length

Please refer to Figures 1 to 3, the ER tool length setting aid 1 of the present invention mainly includes a body 10, one end of the body 10 is provided with a tapered rod 11, and the tapered rod 11 can be directly fitted to the handle The end surface of 70 is locked by a nut 30, wherein: the other end of the main body 10 is provided with an accommodating hole 12, both sides of the accommodating hole 12 are provided with inner screw holes 121, 122, which can be screwed into one With a positioning screw 141 and a locking screw 142, a movable bolt 20 can be accommodated in the accommodating hole 12 of the main body 10. The movable bolt 20 is provided with corresponding long grooves 211, 212 on both sides. The long grooves 211, 212 is respectively provided for the positioning screw 141 and the locking screw 142 to extend, and limit the range of the movable bolt 20 telescopically moving in the accommodating hole 12. One end of the movable bolt 20 is provided with an inner hole 22, and the inner hole 22 is provided with a The elastic element 24 is accommodated. In this embodiment, it is a compression spring. The other end of the elastic element 24 abuts against the accommodating hole 12 of the main body 10, pushing the movable bolt 20 to extend toward the outer end of the accommodating hole 12, and is subject to lengthening. The grooves 221 and 212 are restricted by a tapered end 23 at the other end of the movable bolt 20.

The movable bolt 20 is installed in the accommodating hole 12, and the movable bolt 20 is pushed by the elastic element 24 to extend toward the outer end surface of the accommodating hole 12, and is extended by the positioning screw 141 and the locking screw 142 into the long grooves 211, 212 , And limit the limit position of the movable bolt 20 to move outward, so the movable bolt 20 has the function of telescoping and moving in the accommodating hole 12.

Please refer to Figures 3 to 5, the taper rod 11 of the ER tool length setting aid 1 is directly sleeved on the end face of the tool holder 70 and is locked by a nut 30. The diameter of the workpiece 90 when the tool length is to be measured Is φ20mm, the tool holder body 60 is moved to approach the workpiece 90, so that the movable bolt 20 contacts the tool 90. The tapered end 23 of the movable bolt 20 abuts the surface of the workpiece 90, so that the tool length L can be determined. Only the radius (10mm) of the workpiece 90 is added. At this time, only the locking screw 142 Lock the movable bolt 20 to complete the position setting of the tool length L. The operator can remove the ER tool length setting assistant 1 and move it to the tool length measuring instrument for accurate measurement. The value of the tool length L is used as the tool length reference of all cutting tools on the centering lathe. Please refer to Figures 6 and 7. The difference between the cutting tool 80 and the ER tool length setting aid 1 is Compensation value C, tool length return to zero only needs to add the workpiece radius and compensation value C to make the tool length L reach zero, and input the compensation value C and workpiece radius value into the computer, all tool lengths can reach zero.

Please refer to Figures 5 to 7, because the tool holder 70 used in the present invention does not use an ER elastic collet, the cutting tools 80 used all have a tapered rod 81 that is sleeved with the inner taper hole 73 on the end face of the tool holder 70 Assembling, it gets rid of the shortcoming that the ER elastic collet will cause slight size movement during locking, so there is no need to re-measure the tool length L value when each cutting tool 80 is placed on the rack or when the blade is worn and replaced. All cutting tools 80 can refer to the tool length L value measured by the ER tool length setting assistant 1, simplifying the process of setting the tool length L and reducing the man-hours for the centering type lathe, which brings more convenient and fast tools to the industry. Long calibration procedure effectively reduces processing cost.

In summary, the ER tool length setting aid of the present invention changes the traditional use of elastic collet to set the tool length, which will be elastically retracted, resulting in the disadvantage of tool length measurement error. The movable bolt has the function of telescoping and does not touch the workpiece. There will be wear and tear. With the use of the ER tool length setting aid of the present invention, the tool length only needs to be corrected once, and there is no need to re-measure the tool length value when each cutting tool is placed on the rack or when the cutting edge is worn. Completely change the method of tool length correction of the center-moving lathe and improve its shortcomings. It is highly practical and progressive.

1‧‧‧ER Tool Length Setting Aid

10‧‧‧Ontology

11‧‧‧Taper rod

12‧‧‧Accommodating hole

121、122‧‧‧Internal screw hole

141‧‧‧Set screw

142‧‧‧Locking screw

20‧‧‧Activating bolt

211, 212‧‧‧Long slot

22‧‧‧Inner hole

23‧‧‧Conical end

24‧‧‧Elastic element

Claims (1)

An ER tool length setting aid includes a body. One end of the body is provided with a tapered rod. The tapered rod can be directly sleeved on the end surface of the knife handle and locked by a nut. The other end of the body can accommodate a movable Bolt, wherein: the main body has an accommodating hole at one end, and inner screw holes are provided on both sides of the accommodating hole, so that a positioning screw and a locking screw can be respectively screwed in; the movable bolt is provided with both sides Corresponding to the long grooves, the long grooves are respectively for positioning screws and locking screws to extend into, one end of the movable bolt is provided with an inner hole, the inner hole is for an elastic element to receive, and the other end of the elastic element abuts against In the accommodating hole of the body.

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