A method for positioning a small bracket of a tool holder of a gear grinding machine tool

Abstract

The present invention provides a positioning inspection mandrel and positioning method for a small bracket for a tool holder of a gear grinding machine tool, comprising an axle body; a connector is integrally formed at one or both ends of the axle body; the connector is conical, and its diameter gradually increases from the end away from the axle body to the end close to the axle body, and the diameter of the connector close to the axle body is smaller than the diameter of the axle body, the outer side surface of the connector forms a positioning cone surface, and the vertical surface where the axle body and the connector intersect forms a positioning end surface, and the connector is provided with a chuck inlet, a chuck installation space, and a chuck retraction space in sequence along the long direction of the connector. The present invention is faster and more accurate for the correction and positioning of the small bracket, and can effectively reduce labor costs and improve machine tool production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tools, and in particular relates to a positioning inspection mandrel and a positioning method for a small bracket of a tool holder of a gear grinding machine tool. Background Art

[0002] The small bracket of the gear grinding machine is a machine tool component used to support the gear grinding tool bar. Its size and position accuracy directly affect the position accuracy of the gear grinding tool bar and the product, and thus affect the product quality. In order to ensure the stability of the gear tooth shape and tooth direction of the gear grinding machine during processing, it is necessary to ensure the rotation accuracy of the tool holder B axis and the stability of the tool holder Y axis movement; therefore, the rotation axis of the small bracket spindle is concentric with the rotation axis of the tool holder electric spindle and the parallelism with the Y axis guide rail must be guaranteed; however, in actual operation, the rotation axis of the small bracket spindle is concentric with the rotation axis of the tool holder electric spindle and the parallelism with the Y axis guide rail because the relative position between the small bracket and the tool holder is offset when the tool bar is replaced or when processing gears, resulting in a change in positioning accuracy, which requires recalibration. The calibration process is troublesome and time-consuming. Summary of the invention

[0003] In view of the defects of the prior art, the present invention provides a positioning inspection mandrel and a positioning method for a small bracket of a tool holder of a gear grinding machine tool. The present invention can correct and position the small bracket more quickly and accurately, effectively reduce labor costs, and improve machine tool production efficiency.

[0004] The present invention provides a positioning inspection mandrel for a small bracket of a tool rest of a gear grinding machine tool, comprising a shaft body;

[0005] A connector is integrally formed at one or both ends of the shaft body;

[0006] The connecting head is conical in shape, and its diameter gradually increases from an end away from the shaft body to an end close to the shaft body. The diameter of the connecting head at the end close to the shaft body is smaller than the diameter of the shaft body. The outer side surface of the connecting head forms a positioning cone surface, and the vertical surface where the shaft body and the connecting head intersect forms a positioning end surface. A chuck inlet, a chuck installation space and a chuck withdrawal space are sequentially arranged in the connecting head along the long direction of the connecting head. The diameter of the chuck installation space is greater than the diameter of the chuck inlet and the diameter of the chuck withdrawal space. The diameter of one side of the chuck installation space close to the chuck inlet gradually shortens and forms a chuck locking cone surface. The side of the chuck withdrawal space close to the shaft body extends into the shaft body and forms a chuck withdrawal end surface. A chuck tightening through hole is vertically arranged on the connecting head, and the chuck tightening through hole is connected to the chuck installation space.

[0007] A method for positioning a small bracket of a tool holder of a gear grinding machine tool, using the positioning inspection mandrel described above, the method comprising the following steps:

[0008] S1, move the slide to a suitable position, adsorb the magnetic gauge base to the corresponding position of the slide, clamp the lever gauge and the torsion spring gauge to the cone hole of the shaft sleeve of the electric spindle and the small bracket and the end face of the electric spindle and the small bracket, rotate the shaft sleeve of the electric spindle and the small bracket and observe the runout of the shaft sleeve;

[0009] S2, initially positioning the small bracket;

[0010] S3, accurately position the small bracket.

[0011] In the above technical solution, the present invention can also be improved as follows.

[0012] The preferred technical solution has an additional technical feature in that: the step S2 is specifically as follows: respectively install the first positioning inspection spindle on the electric spindle and the small bracket; respectively adsorb the magnetic meter seats to the corresponding positions of the base, respectively clamp the torsion spring meter to the positive and lateral directions of the proximal and distal ends of the two first positioning inspection spindles, rotate the shaft sleeves of the electric spindle and the small bracket to observe the runout of the shaft sleeves; after passing the test, determine the maximum and minimum values ​​of the runout of the two first positioning inspection spindles, rotate the two first positioning inspection spindles to the median, and mark them; clamp the torsion spring meter to the positive and lateral directions of the proximal ends of the two first positioning inspection spindles, and point the head of the torsion spring meter to the median position, continuously and smoothly move the slide, observe the change value of the torsion spring meter, adjust the position of the small bracket until the change value is minimum, and initially hinge the positioning pin.

[0013] The preferred technical solution has an additional technical feature in that: the step S3 is specifically as follows: the electric spindle unilaterally clamps the first positioning inspection spindle, the magnetic table base is adsorbed at the corresponding positions of the base, the torsion spring table is clamped to the positive and lateral directions of the proximal and distal ends of the first positioning inspection spindle, the shaft sleeve of the electric spindle is rotated continuously and smoothly, and the vibration of the electric spindle is observed.

[0014] The preferred technical solution has an additional technical feature that: the steps of the method also include S4: the electric spindle unilaterally clamps the first positioning inspection spindle, adsorbs the magnetic table base at the corresponding positions of the base, clamps the torsion spring table to the positive and lateral directions of the proximal end of the first positioning inspection spindle, rotates the first positioning inspection spindle to inspect, determines the maximum and minimum values ​​of the runout, rotates the first positioning inspection spindle to the median, and marks it, clamps the torsion spring table to the positive and lateral directions of the proximal end of the first positioning inspection spindle, and points the head of the torsion spring table to the median position, continuously and smoothly moves the slide, and observes the change value of the torsion spring table.

[0015] The preferred technical solution has the additional technical feature that: the method also includes S5, in which the small bracket unilaterally clamps the first positioning inspection spindle, and the steps are similar to the positioning steps of the electric spindle in S3 to S4, wherein S5 is to continuously and smoothly rotate the sleeve of the small bracket to observe the vibration of the small bracket.

[0016] The preferred technical solution has an additional technical feature that: the steps of the method also include S6, the electric spindle unilaterally clamps the second positioning inspection mandrel, adsorbs the magnetic table seat at the corresponding position of the base, clamps the torsion spring table to the positive and lateral directions of the far end of the second positioning inspection mandrel, rotates the shaft sleeve of the electric spindle, observes the shaft sleeve runout of the electric spindle, and after passing the test, slides the small bracket so that the shaft sleeve of the small bracket gently contains the second positioning inspection mandrel, observes the changes in the torsion spring table, and reaches the tolerance; clamps the second positioning inspection mandrel with the small bracket, and its steps are the same as the positioning steps of the electric spindle in S3 to S4, wherein S6 is the continuous and smooth rotation of the shaft sleeve of the small bracket or the shaft sleeve of the electric spindle, and after reaching the tolerance, the positioning pin is precisely reamed.

[0017] The preferred technical solution has the additional technical feature that in step S2, the change at the joint of the first positioning inspection mandrel due to chamfering can be ignored, and at the same time, the forward and lateral directions of the first positioning inspection mandrel need to be marked with directions to take the zero indication to determine the direction of movement to the distal end indication of the first positioning inspection mandrel.

[0018] The preferred technical solution has the additional technical feature that in step S3, the forward and lateral directions of the first positioning inspection spindle need to be inspected simultaneously, and the runout is recorded as the maximum value.

[0019] The preferred technical solution has the additional technical feature that in step S4, the forward and lateral directions of the first positioning inspection spindle need to be detected simultaneously, and the forward and lateral directions of the first positioning inspection spindle need to be marked with directions to take the zero indication to determine the direction of movement to the distal end indication of the first positioning inspection spindle.

[0020] The beneficial effects of the present invention are as follows: the inspection mandrel of the present invention has high inspection accuracy for the small bracket, and can make the small bracket be accurately fixed on the tool holder, which has better stability when processing the gear tooth shape and tooth direction, and can make the correction and positioning of the small bracket faster and more accurate, which can effectively reduce labor costs and improve machine tool production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a schematic structural diagram of a positioning inspection mandrel with two connectors according to Example 1 of the present invention.

[0023] Figure 2 It is a cross-sectional view of a positioning inspection mandrel with two connectors according to Example 1 of the present invention.

[0024] Figure 3 It is a schematic structural diagram of a positioning inspection mandrel with a connector according to Example 1 of the present invention.

[0025] Figure 4 It is a schematic structural diagram of a gear grinding machine tool turret according to Embodiment 2 of the present invention.

[0026] Figure 5 This is a schematic diagram of the operation of step S1 of embodiment 2 of the present invention. Figure 1 .

[0027] Figure 6 This is a schematic diagram of the operation of step S1 of embodiment 2 of the present invention. Figure 2 .

[0028] Figure 7 It is a schematic diagram of the operation of step S2 of Example 2 of the present invention.

[0029] Figure 8 It is a schematic diagram of the operation of step S3 of Example 2 of the present invention.

[0030] Fig. 9 It is a schematic diagram of the operation of step S4 of Example 2 of the present invention.

[0031] Fig.10 This is an operation diagram of step S5 of embodiment 2 of the present invention. Figure 1 .

[0032] Fig.11 This is an operation diagram of step S5 of embodiment 2 of the present invention. Figure 2 .

[0033] Fig.12 This is a schematic diagram of the operation of step S6 of embodiment 2 of the present invention. Figure 1 .

[0034] Fig.13 This is a schematic diagram of the operation of step S6 of embodiment 2 of the present invention. Figure 2 .

[0035] In the figure, the meanings of each mark are as follows:

[0036] 1. Shaft body; 11. Positioning end face; 2. Connector; 21. Positioning cone surface; 22. Chuck inlet; 23. Chuck installation space; 24. Chuck withdrawal space; 25. Chuck locking cone surface; 26. Chuck withdrawal end face; 27. Chuck loosening and tightening hole; 3. First positioning inspection mandrel; 4. Second positioning inspection mandrel; 5. Torsion spring gauge; 6. Lever gauge. DETAILED DESCRIPTION

[0037] In order to further understand the content, features and effects of the present invention, the following embodiments are given and described in detail as follows: Example 1

[0038] See also Figures 1 to 3 , this embodiment provides a positioning inspection mandrel for a small bracket of a tool holder of a gear grinding machine tool, comprising a shaft body 1;

[0039] A connector 2 is integrally formed at one or both ends of the shaft body 1;

[0040] The connector 2 is conical, and its diameter gradually increases from the end away from the shaft body 1 to the end close to the shaft body 1. The diameter of the end of the connector 2 close to the shaft body 1 is smaller than the diameter of the shaft body 1. The outer side of the connector 2 forms a positioning cone surface 21, and the vertical surface where the shaft body 1 and the connector 2 intersect forms a positioning end surface 11. The connector 2 is provided with a chuck inlet 22, a chuck installation space 23 and a chuck withdrawal space in sequence along the length direction of the connector 2. The chuck installation space 23 has a diameter greater than the diameter of the chuck inlet 22 and the diameter of the chuck withdrawal space 24. The diameter of the chuck installation space 23 on one side close to the chuck inlet 22 gradually shortens and forms a chuck locking cone surface 25. The side of the chuck withdrawal space 24 close to the shaft body 1 extends into the shaft body 1 and forms a chuck withdrawal top end surface 26. A chuck tightening through hole 27 is vertically provided on the connecting head 2, and the chuck tightening through hole 27 is communicated with the chuck installation space 23.

[0041] The positioning inspection mandrel provided in this embodiment is used to perform positioning inspection on the small bracket of the tool holder of the gear grinding machine. The positioning inspection mandrel in this embodiment can be designed to have a connector 2 (such as Figure 1 ), or the two ends of the shaft body 1 have connectors 2 (such as Figure 2 ) is designed as a positioning inspection mandrel. When a positioning inspection mandrel with connectors 2 at both ends is designed, the connectors 2 at both ends may be the same size or different sizes. The designed positioning cone surface 21 and positioning end surface 11 are used to cooperate with the chuck of the electric spindle or the chuck of the small bracket. The chuck is inserted into the chuck installation space 23 and locked by the chuck locking cone surface 25. When disassembling the chuck, a wrench can be inserted into the chuck installation space 23 through the chuck loosening through hole 27 to disassemble the chuck. Example 2

[0042] See also Figures 5 to 13 This embodiment provides a method for positioning a small bracket of a tool holder of a gear grinding machine tool, using a positioning inspection mandrel described in Example 1, and the method includes the following steps:

[0043] S1, move the slide to a suitable position, adsorb the magnetic gauge base to the corresponding position of the slide, clamp the lever gauge 6 and the torsion spring gauge 5 to the cone hole of the shaft sleeve of the electric spindle and the small bracket and the end surface of the electric spindle and the small bracket, rotate the shaft sleeve of the electric spindle and the small bracket and observe the runout of the shaft sleeve;

[0044] S2, initially positioning the small bracket;

[0045] S3, accurately position the small bracket.

[0046] In the present embodiment, the gear grinding machine tool tool holder includes a base, a slide, an electric spindle, a grinding wheel core shaft and a small bracket; a slide groove is provided at the upper end of the base; two guide rails are symmetrically provided in the slide groove along the longitudinal direction of the slide groove; the slide is horizontally arranged above the base, and the lower end of the slide is provided with two sliding blocks that slide and cooperate with the two guide rails, the upper right end of the slide is provided with an electric spindle, and the upper left end of the slide is symmetrically provided with a stop block front and back; the small bracket is fixedly arranged at the upper left end of the slide and is located between the two stop blocks, and the small bracket and the slide are fixedly connected by a positioning pin; the grinding wheel core shaft is horizontally arranged above the slide, and the right end of the grinding wheel core shaft is fixedly connected to the left end of the electric spindle, part of the axis of the grinding wheel core shaft is rotatably arranged in the small bracket, and the left end of the grinding wheel core shaft extends out of the small bracket. The slide can slide along the Y-axis direction on the base, and the grinding wheel mandrel can rotate along the B-axis. The tool rest B-axis of this embodiment has high rotation accuracy, and the Y-axis of the tool rest has good mobility. The rotation axis of the small bracket spindle is concentric with the rotation axis of the electric spindle and the parallelism with the guide rail is guaranteed. A plurality of positioning pins are provided. By removing the positioning pins, the small bracket can be freely moved on the slide. The small bracket is positioned to a precise position, and the positioning pins can be reinstalled so that the small bracket is firmly connected to the slide. The two abutment blocks are used to abut the small bracket and limit the small bracket. A slide plate groove is provided at the upper end of the slide, and the lower end of the small bracket slides with the slide plate groove. When the small bracket is not fixed with the positioning pin, the small bracket can slide left and right along the long direction of the slide. The upper end of the small bracket is a bearing seat, and a bearing that cooperates with the shaft body of the grinding wheel mandrel is provided in the bearing seat.

[0047] In this embodiment, the rotation of the tool holder B axis and the movement of the tool holder Y axis must satisfy the coincidence of the rotation axis of the small bracket and the rotation axis of the electric spindle 3. To achieve this goal, four prerequisites are required: (1) the tool holder Y axis can be freely moved; (2) the electric spindle can be freely rotated; (3) the small bracket can be freely rotated; (4) the small bracket can be moved, and the forward and lateral positions of the small bracket can be adjusted. In addition, this method requires three special tools, two first positioning inspection spindles 3 (used to represent the rotation axis of the small bracket and the electric spindle); one second positioning inspection spindle 4 (used to represent the B axis and accurately position the small bracket at the same time); four torsion spring gauges 5 and one lever gauge 6 (to detect changes in rotation accuracy); and four magnetic gauge bases (used to support the torsion spring gauge 5).

[0048] See also Figure 7 , the step S2 is specifically as follows: install the first positioning inspection spindle 3 on the electric spindle and the small bracket respectively; adsorb the magnetic meter seats to the corresponding positions of the base respectively, clamp the torsion spring meter 5 to the positive and lateral directions of the near and far ends of the two first positioning inspection spindles 3 respectively, rotate the shaft sleeves of the electric spindle and the small bracket to observe the runout of the shaft sleeves; after passing the test, determine the maximum and minimum values ​​of the runout of the two first positioning inspection spindles 3, rotate the two first positioning inspection spindles 3 to the median, and mark them; clamp the torsion spring meter 5 to the positive and lateral directions of the proximal ends of the two first positioning inspection spindles 3, and point the head of the torsion spring meter 5 to the median position, move the slide seat continuously and smoothly, observe the change value of the torsion spring meter 5, adjust the position of the small bracket until the change value is minimum, and initially hinge the positioning pin.

[0049] In this embodiment, the first positioning inspection mandrel 3 that is clamped on one side by the small bracket is HSK63, the first positioning inspection mandrel 3 that is clamped on one side by the electric spindle is HSK80, and the first positioning inspection mandrel 3 has only one connector.

[0050] See also Figure 8 Specifically, step S3 is as follows: the electric spindle unilaterally clamps the first positioning inspection spindle 3, the magnetic table seats are adsorbed at corresponding positions of the base, the torsion spring table is clamped to the positive and lateral directions of the near and far ends of the first positioning inspection spindle 3, the shaft sleeve of the electric spindle is rotated continuously and smoothly, and the vibration of the electric spindle is observed.

[0051] See also Fig. 9 The steps of the method also include S4: the electric spindle unilaterally clamps the first positioning inspection spindle 3, and the magnetic meter base is adsorbed on the corresponding position of the base respectively, and the torsion spring meter 5 is clamped to the positive and lateral directions of the proximal end of the first positioning inspection spindle 3 respectively, and the first positioning inspection spindle 3 is rotated to inspect, and the maximum and minimum values ​​of the runout are determined, and the first positioning inspection spindle 3 is rotated to the median and marked, and the torsion spring meter 5 is clamped to the positive and lateral directions of the proximal end of the first positioning inspection spindle 3, and the head of the torsion spring meter 5 is pointed to the median position, and the slide is continuously and smoothly moved to observe the change value of the torsion spring meter 5.

[0052] See also Figure 10 to Figure 11 The method also includes S5, a small bracket unilaterally clamping a first positioning inspection spindle, which is similar to the positioning steps of the electric spindle in S3 to S4, wherein S5 is to continuously and smoothly rotate the sleeve of the small bracket to observe the vibration of the small bracket.

[0053] Repeat steps S3 to S4 here, that is, the small bracket unilaterally clamps the first positioning inspection spindle 3, adsorbs the magnetic table base at the corresponding position of the base, clamps the torsion spring table 5 to the positive and lateral directions of the proximal and distal ends of the first positioning inspection spindle 3, continuously and smoothly rotates the sleeve of the small bracket, and observes the vibration of the small bracket.

[0054] The small bracket clamps the first positioning inspection spindle 3 on one side, and adsorbs the magnetic meter base to the corresponding position of the base respectively. The torsion spring meter 5 is clamped to the positive and lateral directions of the proximal end of the first positioning inspection spindle 3 respectively, and the first positioning inspection spindle 3 is rotated to inspect, and the maximum and minimum values ​​of the runout are determined. The first positioning inspection spindle 3 is rotated to the median and marked. The torsion spring meter 5 is clamped to the positive and lateral directions of the proximal end of the first positioning inspection spindle 3, and the head of the torsion spring meter 5 is pointed to the median position. The slide is moved continuously and smoothly to observe the changing value of the torsion spring meter 5.

[0055] See also Figure 12 to Figure 13 The method also includes steps S6, the electric spindle unilaterally clamps the second positioning inspection mandrel 4, adsorbs the magnetic table seat at the corresponding position of the base, clamps the torsion spring table to the positive and lateral directions of the distal end of the second positioning inspection mandrel 4, rotates the shaft sleeve of the electric spindle, observes the shaft sleeve runout of the electric spindle, and after passing the test, slides the small bracket so that the shaft sleeve of the small bracket is gently included in the second positioning inspection mandrel 4, observes the change of the torsion spring table, and reaches the tolerance; clamps the second positioning inspection mandrel 4 with the small bracket, and the steps are the same as the positioning steps of the electric spindle in S3 to S4, wherein S6 is to continuously and smoothly rotate the shaft sleeve of the small bracket or the shaft sleeve of the electric spindle, and after reaching the tolerance, finely ream the positioning pin.

[0056] That is, the second positioning inspection mandrel 4 is clamped at the opposite end of the electric spindle and the small bracket, the magnetic table seats are adsorbed at the corresponding positions of the base, the torsion spring table 5 is clamped to the positive and lateral directions of the proximal and distal ends of the second positioning inspection mandrel 4, the shaft sleeve of the small bracket or the shaft sleeve of the electric spindle is rotated continuously and smoothly, and the vibration of the small bracket or the electric spindle is observed.

[0057] The second positioning inspection spindle 4 is clamped at the opposite end of the electric spindle and the small bracket, and the magnetic meter seats are adsorbed on the corresponding positions of the base respectively. The torsion spring meter 5 is clamped to the positive and lateral directions of the proximal end of the second positioning inspection spindle 4, and the second positioning inspection spindle 4 is rotated to inspect, and the maximum and minimum values ​​of the runout are determined. The second positioning inspection spindle 4 is rotated to the median and marked. The torsion spring meter 5 is clamped to the positive and lateral directions of the proximal end of the second positioning inspection spindle 4, and the head of the torsion spring meter 5 is pointed to the median position. The slide is moved continuously and smoothly to observe the changing value of the torsion spring meter 5.

[0058] Both ends of the second positioning inspection spindle 4 in this embodiment have connectors, wherein the connector connected to the small bracket is the same as the connector 2 of the first positioning inspection spindle 3 of HSK63, and the connector connected to the electric spindle is the same as the connector 2 of the first positioning inspection spindle 3 of HSK80.

[0059] In step S2 of the present embodiment, the change at the joint of the first positioning inspection spindle 3 due to chamfering can be ignored. At the same time, the forward and lateral directions of the first positioning inspection spindle 3 need to be marked to take the zero reading to determine the direction of movement to the distal end reading of the first positioning inspection spindle 3.

[0060] In step S3 of this embodiment, the forward and lateral directions of the first positioning inspection spindle 3 need to be inspected simultaneously, and the runout is recorded as the maximum value.

[0061] In step S4 of this embodiment, the forward and lateral directions of the first positioning inspection spindle need to be detected simultaneously, and the forward and lateral directions of the first positioning inspection spindle need to be marked with directions to take the zero indication to determine the direction of movement to the distal end indication of the first positioning inspection spindle.

[0062] The method can ensure the stability of the gear tooth shape and tooth direction of the gear grinding machine during processing, and the correction and positioning of the small bracket is faster and more accurate, which can effectively reduce labor costs and improve machine tool production efficiency.

[0063] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory. Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limitations of the present invention, and those of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for positioning a small bracket of a tool holder of a gear grinding machine tool, characterized in that: The invention relates to a positioning and inspection mandrel for a small support seat of a tool holder of a gear grinding machine tool, wherein the positioning and inspection mandrel comprises an axle body, and a connector is integrally formed at one end or both ends of the axle body; the connector is conical, and its diameter gradually increases from an end away from the axle body toward an end close to the axle body, and the diameter of the connector close to the axle body is smaller than the diameter of the axle body; the outer side surface of the connector forms a positioning conical surface, and the vertical surface where the axle body and the connector intersect forms a positioning end surface; the inner side of the connector is along the The longitudinal direction of the connector is provided with a chuck inlet, a chuck installation space and a chuck withdrawal space in sequence, the diameter of the chuck installation space is greater than the diameter of the chuck inlet and the diameter of the chuck withdrawal space, the diameter of one side of the chuck installation space close to the chuck inlet gradually shortens and forms a chuck locking cone surface, the side of the chuck withdrawal space close to the shaft body extends into the shaft body and forms a chuck withdrawal top surface, a chuck loosening through hole is vertically provided on the connector, and the chuck loosening through hole is communicated with the chuck installation space; The method comprises the following steps: S1, move the slide to a suitable position, adsorb the magnetic gauge base to the corresponding position of the slide, clamp the lever gauge and the torsion spring gauge to the cone hole of the shaft sleeve of the electric spindle and the small bracket and the end face of the electric spindle and the small bracket, rotate the shaft sleeve of the electric spindle and the small bracket and observe the runout of the shaft sleeve; S2, initially positioning the small bracket; S3, accurately positioning the small bracket; The step S2 is specifically as follows: install the first positioning inspection spindle on the electric spindle and the small bracket respectively; adsorb the magnetic meter seats to the corresponding positions of the base respectively, clamp the torsion spring meter to the positive and lateral directions of the proximal and distal ends of the two first positioning inspection spindles respectively, rotate the shaft sleeves of the electric spindle and the small bracket to observe the runout of the shaft sleeves; after passing the test, determine the maximum and minimum runout of the two first positioning inspection spindles, rotate the two first positioning inspection spindles to the median, and mark them; clamp the torsion spring meter to the positive and lateral directions of the proximal ends of the two first positioning inspection spindles, and point the head of the torsion spring meter to the median position, move the slide seat continuously and smoothly, observe the change value of the torsion spring meter, adjust the position of the small bracket until the change value is minimum, and initially hinge the positioning pin.

2. The positioning method of a small bracket of a tool rest of a gear grinding machine tool according to claim 1, characterized in that: The step S3 is specifically as follows: the electric spindle unilaterally clamps the first positioning inspection spindle, the magnetic table seats are adsorbed on the corresponding positions of the base, the torsion spring table is clamped to the positive and lateral directions of the near and far ends of the first positioning inspection spindle, the shaft sleeve of the electric spindle is rotated continuously and smoothly, and the vibration of the electric spindle is observed.

3. The method for positioning a small bracket of a tool rest of a gear grinding machine tool according to claim 2, characterized in that: The steps of the method also include S4: the electric spindle unilaterally clamps the first positioning inspection spindle, adsorbs the magnetic meter base at the corresponding positions of the base, clamps the torsion spring meter to the positive and lateral directions of the proximal end of the first positioning inspection spindle, rotates the first positioning inspection spindle to inspect, determines the maximum and minimum values ​​of the runout, rotates the first positioning inspection spindle to the median, and marks it, clamps the torsion spring meter to the positive and lateral directions of the proximal end of the first positioning inspection spindle, and points the head of the torsion spring meter to the median position, continuously and smoothly moves the slide, and observes the change value of the torsion spring meter.

4. The method for positioning a small bracket of a tool rest of a gear grinding machine tool according to claim 3, characterized in that: The method further comprises the steps of S5, wherein the step S5 is specifically as follows: the small bracket unilaterally clamps the first positioning inspection mandrel, the magnetic table seats are respectively adsorbed at corresponding positions of the base, the torsion spring table is respectively clamped to the positive and lateral directions of the proximal and distal ends of the first positioning inspection mandrel, the shaft sleeve of the small bracket is continuously and steadily rotated, and the runout of the small bracket is observed; The small bracket clamps the first positioning inspection spindle on one side, and adsorbs the magnetic table base on the corresponding positions of the base. The torsion spring table is clamped to the positive and lateral directions of the proximal end of the first positioning inspection spindle, and the first positioning inspection spindle is rotated to inspect, and the maximum and minimum values ​​of the runout are determined. The first positioning inspection spindle is rotated back to the median and marked. The torsion spring table is clamped to the positive and lateral directions of the proximal end of the first positioning inspection spindle, and the head of the torsion spring table is pointed to the median position. The slide is moved continuously and smoothly to observe the changing value of the torsion spring table.

5. The method for positioning a small bracket of a tool rest of a gear grinding machine tool according to claim 4, characterized in that: The steps of the method also include S6, and the specific steps of step S6 are as follows: clamping the second positioning inspection spindle at one end opposite to the electric spindle and the small bracket, respectively adsorbing the magnetic table seats at corresponding positions of the base, respectively clamping the torsion spring table to the positive and lateral directions of the proximal and distal ends of the second positioning inspection spindle, continuously and steadily rotating the shaft sleeve of the small bracket or the shaft sleeve of the electric spindle, and observing the vibration of the small bracket or the electric spindle; clamping the second positioning inspection spindle at one end opposite to the electric spindle and the small bracket, respectively adsorbing the magnetic table seats at corresponding positions of the base, respectively clamping the torsion spring table to the positive and lateral directions of the proximal end of the second positioning inspection spindle, rotating and inspecting the second positioning inspection spindle, determining the maximum and minimum vibration values, rotating the second positioning inspection spindle to the median, and marking it, clamping the torsion spring table to the positive and lateral directions of the proximal end of the second positioning inspection spindle, and pointing the head of the torsion spring table to the median position, continuously and steadily moving the slide, and observing the change value of the torsion spring table.

6. The method for positioning a small bracket of a tool rest of a gear grinding machine tool according to claim 1, characterized in that: In step S2, the change of the joint of the first positioning inspection mandrel due to chamfering can be ignored. At the same time, the positive and lateral directions of the first positioning inspection mandrel need to be marked to take the zero reading to determine the direction of the far end reading of the first positioning inspection mandrel.

7. The method for positioning a small bracket of a tool rest of a gear grinding machine tool according to claim 2, characterized in that: In step S3, the forward and lateral directions of the first positioning inspection mandrel need to be inspected simultaneously, and the runout is recorded as the maximum value.

8. The method for positioning a small bracket of a tool rest of a gear grinding machine tool according to claim 3, characterized in that: In step S4, the forward and lateral directions of the first positioning inspection spindle need to be detected simultaneously, and the forward and lateral directions of the first positioning inspection spindle need to be marked with directions to take the zero indication to determine the direction of the distal indication moving to the first positioning inspection spindle.

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