CN112453595A - Internal thread grinding machine for numerical control machining and adjusting method thereof - Google Patents
Internal thread grinding machine for numerical control machining and adjusting method thereof Download PDFInfo
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- CN112453595A CN112453595A CN202011379948.4A CN202011379948A CN112453595A CN 112453595 A CN112453595 A CN 112453595A CN 202011379948 A CN202011379948 A CN 202011379948A CN 112453595 A CN112453595 A CN 112453595A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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Abstract
The invention discloses an internal thread grinding machine for numerical control machining and an adjusting method thereof, and the internal thread grinding machine comprises a machine body, wherein two ends of a plane on the machine body are respectively provided with a guide rail and a dragging plate, the guide rail is provided with a workpiece adjusting device, the dragging plate of a grinding frame is provided with an electric spindle adjusting seat, the electric spindle adjusting seat is provided with an adjusting mechanism, one side of the workpiece adjusting device is connected with a roller adjusting seat, the dragging plate of the grinding frame comprises a nut seat and a ball screw, the ball screw penetrates through the nut seat, the workpiece adjusting device comprises a workpiece shaft, the workpiece shaft penetrates through a workpiece box, one end of the workpiece shaft is connected with a workpiece; in the angle conversion, the height of the center of the two shafts is not changed with the height of the center of the workpiece shaft, and each shaft gives a true rotation point, so that the height of the center is changed only, the consistency of the heights of the grinding wheel electric main shaft, the diamond roller shaft and the workpiece shaft is ensured, the operation tool setting is simple and reliable, and the precision and the stability of the displacement of the grinding frame planker and the rotation of the workpiece are ensured by closed-loop control of a grating.
Description
Technical Field
The invention relates to an internal thread grinding machine, in particular to an internal thread grinding machine for numerical control machining and an adjusting method thereof.
Background
The internal thread grinding machine is a processing machine tool for processing precise threads by using a formed grinding wheel as a grinding tool.
The roller device and the workpiece box of the common internal thread grinding machine are separated, the size is large, the electric spindle device has no base point, the electric spindle device deviates every time of rotation, and the three devices have no uniform center height, so that the angle needs to be adjusted every time when the diamond roller and the electric spindle are adjusted. The precision is not high due to the fact that the angles need to be gathered in multiple directions, each adjustment has errors, the angle can be adjusted to the thought angle in one day sometimes, and the precision of the workpiece is not high.
Disclosure of Invention
The invention provides an internal thread grinding machine for numerical control machining and an adjusting method thereof, which are used for overcoming the defects that the center heights of a roller device and a workpiece box of the internal thread grinding machine in the prior art are inconsistent, and the center heights are time-consuming and labor-consuming to adjust and the precision is poor when a workpiece is replaced due to the fact that a diamond roller device rotates and deviates.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses an internal thread grinding machine for numerical control machining and an adjusting method thereof, wherein the internal thread grinding machine comprises a machine body, two ends of the upper plane of the machine body are respectively provided with a guide rail and a grinding frame dragging plate, the guide rail is provided with a workpiece adjusting device, the grinding frame dragging plate is provided with an electric spindle adjusting seat, the electric spindle adjusting seat is provided with an adjusting mechanism, and one side of the workpiece adjusting device is connected with a roller adjusting seat; the grinding frame dragging plate comprises a nut seat and a ball screw, and one end of the ball screw penetrates through the nut seat and is fixed; the workpiece adjusting device comprises a workpiece box, a workpiece chuck, a workpiece shaft and a workpiece carriage, wherein the workpiece shaft penetrates through the workpiece box, one end of the workpiece shaft is connected with the workpiece chuck, and the workpiece box is connected with the guide rail through the workpiece carriage.
Furthermore, one side of the guide rail is provided with a second servo motor, and the second servo motor provides power for the movement of the guide rail.
Furthermore, the other end of the ball screw is connected with a first servo motor, and the first servo motor provides power for the movement of the carriage of the grinding frame.
Furthermore, the other end of the workpiece shaft is connected with a third servo motor, the third servo motor is used as a power device for rotating the workpiece shaft, the third servo motor is connected with a speed reduction motor and a linear grating, and the linear grating is used for accurately positioning the rotation of the workpiece.
Furthermore, one side of the grinding frame planker is provided with a linear grating for accurately positioning the die frame planker and the workpiece.
Furthermore, the electric spindle adjusting seat comprises an electric spindle base, an electric spindle seat, an electric spindle and a base sliding plate, wherein the base sliding plate is arranged on the electric spindle base, the electric spindle seat is arranged on the base sliding plate, the electric spindle is arranged on the electric spindle seat, and the base sliding plate moves up on the electric spindle base to adjust the center height of the electric spindle.
Further, the roller adjusting seat comprises a roller seat, a roller shaft, a diamond roller, a roller seat bottom plate and a roller seat adjusting plate, the roller seat bottom plate is arranged on the roller seat adjusting plate, the roller seat is arranged on the roller seat bottom plate, the roller shaft is arranged on the roller seat, the diamond roller is arranged on the roller shaft, and the roller seat bottom plate is arranged in the chute of the roller seat adjusting plate and used for adjusting the angle of the roller shaft.
Furthermore, the rotation reference heights of the electric spindle, the workpiece shaft and the roller shaft are consistent.
An adjusting step: firstly, taking the contact surface of a workpiece box and a roller seat adjusting plate as a reference surface, and simultaneously ensuring the parallelism of the workpiece box and the roller seat adjusting plate and the perpendicularity of the workpiece box and a guide rail; when the workpiece clamping device works, a workpiece is clamped on a workpiece clamping disc, and the workpiece clamping disc is connected with a workpiece shaft; then, adjusting the angle of the electric main shaft to the angle matched with the workpiece, rotating the bottom plate of the roller seat to drive the roller shaft as the diamond roller is arranged on the roller shaft, and adjusting the angle of the diamond roller to enable the electric main shaft to be parallel to the roller shaft; after the working mode is started, the workpiece rotates along with the workpiece shaft, the grinding wheel at the top end of the electric spindle extends into the workpiece, the threads of the workpiece are ground by feeding of the workpiece carriage, the grinding of the workpiece is finished successively, and the workpiece is continuously arranged on the workpiece chuck; the positioning of the die carrier planker and the positioning of the rotation of the workpiece are controlled by the linear grating, so that the positioning precision is higher; and when the preset number of workpieces is reached, operating a button on the program panel, walking the workpiece carriage to a preset position to trim the grinding wheel, and continuing to work after finishing.
The invention has the following beneficial effects:
the adjustment of the angle of the electric main shaft and the angle of the diamond roller shaft is carried out, the height of the center of two shafts is unchanged with the height of the center of a workpiece shaft in angle change, the operation tool setting is simple and reliable, and grating positioning control is added, so that the precision requirement of a high-precision ball screw can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic elevation view of the present invention;
fig. 3 is a rear view structural diagram of the present invention.
In the figure: 1. a bed body; 2. a guide rail; 3. a grinding carriage planker; 31. a nut seat; 32. a ball screw; 4. an electric spindle adjusting seat; 41. an electric spindle base; 42. an electric spindle base; 43. an electric spindle; 44. a base slide plate; 5. an adjustment mechanism; 6. a workpiece adjusting device; 61. a workpiece box; 62. a workpiece chuck; 63. a workpiece shaft; 64. a workpiece carriage; 7. a roller adjusting seat; 71. a roller seat; 72. a roller shaft; 73. a diamond roller; 74. a roller seat bottom plate; 75. a roller seat adjusting plate; 8. a first servo motor; 9. a second servo motor; 10. a third servo motor; 11. a reduction motor; 12. and (3) linear grating.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in fig. 1-3, an internal thread grinding machine for numerical control machining and an adjusting method thereof comprise a machine body 1, wherein a guide rail 2 and a grinding carriage dragging plate 3 are respectively arranged at two ends of an upper plane of the machine body 1, a workpiece adjusting device 6 is arranged on the guide rail 2, an electric spindle adjusting seat 4 is arranged on the grinding carriage dragging plate 3, an adjusting mechanism 5 is arranged on the electric spindle adjusting seat 4, and one side of the workpiece adjusting device 6 is connected with a roller adjusting seat 7;
the grinding carriage dragging plate 3 comprises a nut seat 31 and a ball screw 32, one end of the ball screw 32 penetrates through the nut seat 31 and is fixed, the other end of the ball screw is connected with a first servo motor 8, and the first servo motor 8 provides power for movement of the grinding carriage dragging plate 3;
the workpiece adjusting device 6 comprises a workpiece box 61, a workpiece chuck 62, a workpiece shaft 63 and a workpiece carriage 64, wherein the workpiece shaft 63 penetrates through the workpiece box 61, one end of the workpiece shaft 63 is connected with the workpiece chuck 62, the other end of the workpiece shaft is connected with a third servo motor 10, the third servo motor 10 is used as a power device for rotating the workpiece shaft 63, the third servo motor 10 is connected with a speed reducing motor 11, and the workpiece box 61 is connected with the guide rail 2 through the workpiece carriage 64.
One side of the guide rail 2 is provided with a second servo motor 9, and the second servo motor 9 is used for driving the guide rail 2 to move.
One side of the grinding carriage planker 3 is provided with a linear grating 12, and the linear grating 12 is used for accurately positioning the rotation of a workpiece.
The electric spindle adjusting seat 4 comprises an electric spindle base 41, an electric spindle seat 42, an electric spindle 43 and a base sliding plate 44, wherein the electric spindle base 41 is provided with the base sliding plate 44, the base sliding plate 44 is provided with the electric spindle seat 42, the electric spindle seat 42 is provided with the electric spindle 43, and the base sliding plate 44 moves in a sliding groove in the electric spindle base 41 and is used for adjusting the center height of the electric spindle 43.
The roller adjusting seat 7 comprises a roller seat 71, a roller shaft 72, a diamond roller 73, a roller seat bottom plate 74, a roller seat adjusting plate 75, a roller seat bottom plate 74 is arranged on the roller seat adjusting plate 75, a roller seat 71 is arranged on the roller seat bottom plate 74, a roller shaft 72 is arranged on the roller seat 71, a diamond roller 73 is arranged on the roller shaft 72, the roller seat bottom plate 74 is arranged in a chute of the roller seat adjusting plate 75 and used for adjusting the center height of the roller shaft 72.
The rotation centers of the electric spindle 43, the workpiece shaft 63 and the roller shaft 72 are consistent in height.
The working process is as follows: a nut seat 31 is arranged on the reverse side of the grinding frame dragging plate 3, a ball screw 32 is arranged in the middle of the nut seat 31, and the other end of the ball screw 32 is driven by a first servo motor 8. A guide rail 2 is arranged between the grinding carriage planker 3 and the lathe bed 1. The first servo motor 8 drives the grinding carriage planker 3 to move. An electric spindle adjusting seat 4 is arranged on the grinding carriage dragging plate 3, an electric spindle seat 42 is arranged on the electric spindle base 41, the electric spindle seat and the electric spindle have a rotation center, and the electric spindle 43 can be adjusted to a required angle according to the rotation center through an adjusting mechanism 5 on the electric spindle seat. The die carrier dragging plate 3 is provided with a workpiece box 61, the side surface of the workpiece box 61 is provided with a roller seat adjusting plate 75 and a roller seat bottom plate 74, the roller seat bottom plate 74 and the roller seat adjusting plate 75 also have a rotation center, and the rotation center is equal to the rotation center of the electric spindle 43 and the center of the workpiece shaft 63 in height, so that the three are always on the same equal height line when the angle of the diamond roller 83 is adjusted, the design is very efficient when the angle is adjusted, and high precision can be ensured. A workpiece shaft 63 is arranged in the workpiece box 61, the workpiece shaft 63 is driven by a third servo motor 10 behind the shaft, and a speed reducing motor 11 is arranged between the workpiece shaft 63 and the third servo motor 10, so that the workpiece shaft 63 is more stable at a low rotating speed.
An adjusting step: firstly, the contact surface of the workpiece box 61 and the roller seat adjusting plate 75 is taken as a reference surface, and the parallelism of the workpiece box 61 and the roller seat adjusting plate and the perpendicularity of the workpiece box 61 and the guide rail 2 are ensured; when the workpiece clamping device works, a workpiece is clamped on the workpiece clamping disc 62, and the workpiece clamping disc 62 is connected with the workpiece shaft 63; then, the angle of the electric spindle 43 is adjusted to the angle required by the workpiece, and then the angle of the diamond roller 73 (the diamond roller 73 is arranged on the roller shaft 72, and the roller base bottom plate 74 is rotated to drive the roller shaft 72) is adjusted to enable the electric spindle 43 and the roller shaft 72 to be parallel; after the working mode is started, the workpiece rotates along with the workpiece shaft 63, the grinding wheel at the top end of the electric spindle 43 extends into the workpiece, the threads of the workpiece are ground by feeding of the workpiece carriage 64, one workpiece is continuously replaced after grinding is finished, and the workpiece is continuously arranged on the workpiece chuck 62; when the set number of workpieces is reached (for example, 50 workpieces are set to be ground, the grinding wheel needs to be dressed once), operating a button on a program panel, moving the workpiece carriage 64 to a certain position to dress the grinding wheel, and continuing working after finishing; the positioning of the die carrier planker 3 and the positioning of the rotation of the workpiece are controlled by the linear grating 12, so that the positioning precision is higher.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The internal thread grinding machine for numerical control machining is characterized by comprising a machine body, wherein a guide rail and a grinding frame dragging plate are respectively arranged at two ends of the upper plane of the machine body, a workpiece adjusting device is arranged on the guide rail, an electric spindle adjusting seat is arranged on the grinding frame dragging plate, an adjusting mechanism is arranged on the electric spindle adjusting seat, and one side of the workpiece adjusting device is connected with a roller adjusting seat;
the grinding frame dragging plate comprises a nut seat and a ball screw, and one end of the ball screw penetrates through the nut seat and is fixed;
the workpiece adjusting device comprises a workpiece box, a workpiece chuck, a workpiece shaft and a workpiece carriage, wherein the workpiece shaft penetrates through the workpiece box, one end of the workpiece shaft is connected with the workpiece chuck, and the workpiece box is connected with the guide rail through the workpiece carriage.
2. The internal thread grinding machine for numerical control machining according to claim 1, wherein the other end of the ball screw is connected with a first servo motor, and the first servo motor provides power for movement of a carriage planker.
3. The internal thread grinding machine for numerical control machining according to claim 1, wherein the other end of the workpiece shaft is connected to a third servo motor, the third servo motor serves as a power device for rotation of the workpiece shaft, the third servo motor is connected to a reduction motor and a linear grating, and the linear grating is used for precisely positioning rotation of the workpiece.
4. The internal thread grinding machine for numerical control machining according to claim 1, wherein a linear grating is provided on one side of the grinding carriage for accurately positioning the die carrier carriage and the workpiece.
5. The internal thread grinding machine for numerical control machining according to claim 1, wherein a second servo motor is provided on one side of the guide rail, and the second servo motor provides power for movement of the guide rail.
6. The internal thread grinding machine for numerical control machining according to claim 1, wherein the electric spindle adjusting seat comprises an electric spindle base, an electric spindle seat, an electric spindle, and a base sliding plate, wherein the electric spindle base is provided with the base sliding plate, the base sliding plate is provided with the electric spindle seat, the electric spindle seat is provided with the electric spindle, and the base sliding plate moves in a sliding groove on the electric spindle base to adjust a rotation center angle of the electric spindle.
7. The internal thread grinding machine for numerical control machining according to claim 1, wherein the roller adjustment seat includes a roller seat, a roller shaft, a diamond roller, a roller seat bottom plate, and a roller seat adjustment plate, the roller seat adjustment plate is provided with a roller seat bottom plate, the roller seat bottom plate is provided with a roller seat, the roller seat is provided with a roller shaft, the roller shaft is provided with a diamond roller, and the roller seat bottom plate moves in a sliding groove of the roller seat adjustment plate for adjusting a rotation center angle of the roller shaft.
8. The internal thread grinding machine for numerical control machining according to claim 1, wherein the rotational reference heights of the electric spindle, the workpiece shaft, and the roller shaft are uniform.
9. The internal thread grinding machine for numerical control machining according to claim 1, characterized in that the adjustment method includes:
firstly, taking the contact surface of a workpiece box and a roller seat adjusting plate as a reference surface, and simultaneously ensuring the parallelism of the workpiece box and the roller seat adjusting plate and the perpendicularity of the workpiece box and a guide rail;
when the workpiece clamping device works, a workpiece is clamped on a workpiece clamping disc, and the workpiece clamping disc is connected with a workpiece shaft;
then, adjusting the angle of the electric main shaft to the angle matched with the workpiece, rotating the bottom plate of the roller seat to drive the roller shaft as the diamond roller is arranged on the roller shaft, and adjusting the angle of the diamond roller to enable the electric main shaft to be parallel to the roller shaft;
after the working mode is started, the workpiece rotates along with the workpiece shaft, the grinding wheel at the top end of the electric spindle extends into the workpiece, the threads of the workpiece are ground by feeding of the workpiece carriage, the grinding of the workpiece is finished successively, and the workpiece is continuously arranged on the workpiece chuck;
the positioning of the die carrier carriage is controlled by a linear grating and the rotation of the workpiece is controlled by the linear grating, so that the positioning precision is higher;
and when the preset number of workpieces is reached, operating a button on the program panel, walking the workpiece carriage to a preset position to trim the grinding wheel, and continuing to work after finishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011379948.4A CN112453595A (en) | 2020-11-30 | 2020-11-30 | Internal thread grinding machine for numerical control machining and adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011379948.4A CN112453595A (en) | 2020-11-30 | 2020-11-30 | Internal thread grinding machine for numerical control machining and adjusting method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112453595A true CN112453595A (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011379948.4A Pending CN112453595A (en) | 2020-11-30 | 2020-11-30 | Internal thread grinding machine for numerical control machining and adjusting method thereof |
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| CN (1) | CN112453595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059240A (en) * | 2021-04-06 | 2021-07-02 | 湖南大学 | Internal thread precision grinding method |
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2020
- 2020-11-30 CN CN202011379948.4A patent/CN112453595A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059240A (en) * | 2021-04-06 | 2021-07-02 | 湖南大学 | Internal thread precision grinding method |
| CN113059240B (en) * | 2021-04-06 | 2022-04-01 | 湖南大学 | Internal thread precision grinding method |
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