Off-line tool setting device for hob grinding

Abstract

The utility model discloses an off-line tool setting device for hob grinding, which comprises a positioning mandrel for clamping a hob, a deflection instrument for mounting the positioning mandrel, and a heart-shaped chuck mounted on the outer circle of one end of the positioning mandrel, the first tool setting module and the second tool setting module are arranged on a base workbench of the deflection instrument and used for positioning the circumferential position angle of a hob, and the second tool setting module is used for positioning the circumferential position of a heart-shaped chuck. The first tool setting module comprises a first seat block arranged on a base workbench of the deflection instrument, a first stand column vertically arranged on the first seat block, and tool setting teeth arranged on the top of the first stand column and arranged in a horizontal overhanging mode. The second tool setting module comprises a second seat block arranged on the base workbench of the deflection instrument, a second stand column vertically arranged on the second seat block, and a tool setting ruler arranged on the top of the second stand column and horizontally overhung. According to the utility model, the clamping preparation time of the hob on the gear grinding machine is shortened, and the gear grinding efficiency of the hob under the condition of batch production is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hob tooth profile grinding processing, in particular to an off-line tool setting device for hob grinding. Background Art

[0002] When manufacturing a hob, the hob's tooth profile needs to be ground. The hob's tooth profile is ground on a gear grinding machine, and the hob is positioned and clamped using a positioning mandrel. The positioning mandrel has top holes at both ends. After the hob is installed on the positioning mandrel, the positioning mandrel is supported by two thimbles on the gear grinding machine, and a heart-shaped chuck is installed at one end of the positioning mandrel. The heart-shaped chuck is connected to the dial on the main shaft of the gear grinding machine to achieve the transmission of grinding power.

[0003] In the prior art, in order to realize the grinding of the hob tooth shape, the circumferential angular position of the hob tooth groove on the positioning mandrel needs to be aligned when the positioning mandrel is clamped on the gear grinding machine. For this purpose, the operator of the gear grinding machine needs to repeatedly align the hob tooth groove on the positioning mandrel, which is a relatively cumbersome operation. As a result, the preparation time for clamping the hob on the gear grinding machine is increased, and the production efficiency of the hob gear grinding process under mass production conditions is reduced. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes an off-line tool setting device for hob grinding, which aims to reduce the preparation time for the hob clamping on the gear grinding machine and improve the production efficiency of hob gear grinding under mass production conditions. The specific technical solution is as follows:

[0005] An off-line tool setting device for hob grinding comprises a positioning spindle for clamping the hob, a runout meter for installing the positioning spindle, a heart-shaped chuck installed on the outer circle of one end of the positioning spindle, and a first tool setting module for positioning the circumferential position angle of the hob and a second tool setting module for positioning the circumferential position of the heart-shaped chuck, which are respectively arranged on a base workbench of the runout meter; the first tool setting module comprises a first seat block arranged on the base workbench of the runout meter, a first column erected upwardly on the first seat block, and a tool setting tooth arranged on the top of the first column and cantilevered horizontally; the second tool setting module comprises a second seat block arranged on the base workbench of the runout meter, a second column erected upwardly on the second seat block, and a tool setting ruler arranged on the top of the second column and cantilevered horizontally.

[0006] In the utility model, the deflection meter is provided with a front ejector pin and a rear ejector pin, and both ends of the positioning mandrel are respectively provided with a center hole, and the positioning mandrel is clamped between the front ejector pin and the rear ejector pin of the deflection meter through the center hole.

[0007] Preferably, the first seat block of the first tool setting module is movably arranged on the base workbench of the yaw meter.

[0008] Preferably, the upper tooth surface of the tool teeth of the first tool setting module is a horizontally arranged plane and is arranged at the same height as the central axis of the positioning core shaft, and the lower tooth surface of the tool teeth of the first tool setting module is an inclined surface arranged obliquely.

[0009] During tool setting, the tool setting teeth of the first tool setting module are clamped in the tooth grooves of the hob, thereby realizing the circumferential positioning of the hob.

[0010] In the utility model, the tool setting ruler of the second tool setting module is arranged at a position close to the chicken heart chuck.

[0011] In the utility model, the second seat block of the second tool setting module is fixed on the base workbench of the runout instrument by fastening screws.

[0012] In the utility model, the heart-shaped chuck is provided with a lever and a tightening screw for fixing the positioning core shaft. When aligning the tool, the lever on the heart-shaped chuck is horizontally abutted against the ruler surface of the tool-aligning ruler. After the tool alignment is completed, the heart-shaped chuck and the positioning core shaft are relatively fixed by the tightening screw.

[0013] In the utility model, the heart-shaped chuck comprises a chuck body, a lever integrally connected to the chuck body, a heart-shaped hole arranged on the chuck body for installing a positioning mandrel, and a tightening screw arranged on the chuck body for fixing the positioning mandrel.

[0014] The utility model provides an off-line tool setting device for hob grinding, which further comprises a dial arranged on the rotating spindle of the gear grinder, a positioning block is arranged on the dial, and a positioning groove matched with the shifting rod is arranged on the positioning block.

[0015] In the utility model, the positioning mandrel and the chicken heart chuck are both matched with two sets, which are used for alternate use on the gear grinding machine and the deflection instrument.

[0016] The method of using the utility model comprises the following steps:

[0017] (1) Preparation: Prepare two sets of positioning mandrels and two sets of heart-shaped chucks, and install the hob on one set of positioning mandrels;

[0018] (2) Offline clamping and tool setting: Pre-install a heart-shaped chuck on the outer circle of one end of the positioning mandrel with the hob installed, then use the two pins of the runout meter to hold the two ends of the positioning mandrel, use the first tool setting module on the runout meter to circumferentially position the hob tooth groove on the positioning mandrel (the tool setting teeth are inserted into the hob tooth groove), and then use the second tool setting module on the runout meter to adjust the circumferential position of the lever on the heart-shaped chuck so that one side of the lever is against the ruler surface of the tool setting ruler. After it is in place, use the tightening screws to fix the heart-shaped chuck on the positioning mandrel;

[0019] (3) Online clamping and grinding: After the offline clamping and tool alignment is completed, the positioning mandrel with the hob and the heart-shaped chuck is moved as a whole between the two thimbles of the gear grinding machine, and the lever on the heart-shaped chuck is positioned in the positioning groove of the positioning block of the gear grinding machine dial to achieve the circumferential positioning of the hob; after it is in place, the gear grinding machine is turned on to grind the hob tooth shape. After the grinding is completed, the hob is removed from the positioning mandrel;

[0020] During the grinding process, the next hob to be ground is mounted on another set of positioning mandrels using the gear grinding machine's motorized grinding time, and then the offline clamping and tool setting of step (2) and the online clamping and grinding of step (3) are performed in sequence. This achieves the simultaneous offline clamping and tool setting and online clamping and grinding of hobs in batch grinding conditions.

[0021] The beneficial effects of the utility model are:

[0022] By arranging the first tool setting module and the second tool setting module on the runout instrument, the tool setting and alignment work that is conventionally required to be performed on the gear grinding machine can be completed offline on the runout instrument in advance, thereby reducing the clamping preparation time of the hob on the gear grinding machine and improving the production efficiency of the hob gear grinding process under mass production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an off-line tool setting device for hob grinding of the utility model;

[0024] Figure 2 yes Figure 1 The structural diagram of the first tool setting module in FIG. 1 (left view);

[0025] Figure 3 yes Figure 1 The structural diagram of the second tool setting module in FIG. 1 (left view);

[0026] Figure 4 This is a partial structural diagram of the positioning mandrel with the hob and the heart-shaped chuck installed as a whole on the gear grinding machine after the offline tool setting is completed (the positioning mandrel is clamped by two thimbles on the gear grinding machine and the circumferential positioning of the hob and the transmission of power are achieved through the positioning block on the dial).

[0027] In the figure: 1. positioning mandrel, 2. runout meter, 3. heart-shaped chuck, 4. base workbench, 5. hob, 6. first tool setting module, 7. second tool setting module, 8. first seat block, 9. first column, 10. tool setting teeth, 11. second seat block, 12. second column, 13. tool setting ruler, 14. front ejector pin, 15. rear ejector pin, 16. tooth groove, 17. lever, 18. tightening screw, 19. ruler surface, 20. chuck body, 21. heart-shaped hole, 22. dial, 23. positioning block, 24. positioning groove. DETAILED DESCRIPTION

[0028] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0029] like Figures 1 to 4 The figure shows an embodiment of an off-line tool setting device for hob grinding of the utility model, comprising a positioning spindle 1 for clamping the hob 5, a runout meter 2 for installing the positioning spindle 1, a heart-shaped chuck 3 installed on the outer circle of one end of the positioning spindle 1, and a first tool setting module 6 for positioning the circumferential position angle of the hob and a second tool setting module 7 for positioning the circumferential position of the heart-shaped chuck 3, which are respectively arranged on the base workbench 4 of the runout meter 2; the first tool setting module 6 comprises a first seat block 8 arranged on the base workbench 4 of the runout meter 2, a first column 9 erected upwardly on the first seat block 8, and a tool setting tooth 10 arranged on the top of the first column 9 and horizontally cantilevered; the second tool setting module 7 comprises a second seat block 11 arranged on the base workbench 4 of the runout meter 2, a second column 12 erected upwardly on the second seat block 11, and a tool setting ruler 13 arranged on the top of the second column 12 and horizontally cantilevered.

[0030] In this embodiment, the deflection meter 2 is provided with a front ejector pin 14 and a rear ejector pin 15 , and the two ends of the positioning mandrel 1 are respectively provided with a center hole, and the positioning mandrel 1 is clamped between the front ejector pin 14 and the rear ejector pin 15 of the deflection meter 2 through the center hole.

[0031] Preferably, the first seat block 8 of the first tool setting module 6 is movably arranged on the base workbench 4 of the runout meter 2 .

[0032] Preferably, the upper tooth surface of the tool teeth 10 of the first tool setting module 6 is a horizontally arranged plane and is arranged at the same height as the central axis of the positioning core shaft 1, and the lower tooth surface of the tool teeth 10 of the first tool setting module 6 is an inclined surface.

[0033] During tool setting, the tool setting teeth 10 of the first tool setting module 6 are clamped in the tooth grooves 16 of the hob 5 , thereby achieving circumferential positioning of the hob 5 .

[0034] In this embodiment, the tool setting ruler 13 of the second tool setting module 7 is arranged at a position close to the heart-shaped chuck 3 .

[0035] In this embodiment, the second seat block 11 of the second tool setting module 7 is fixed to the base workbench 4 of the runout instrument 2 by fastening screws.

[0036] In this embodiment, the heart-shaped chuck 3 is provided with a lever 17 and a tightening screw 18 for fixing the positioning core shaft 1. When aligning the tool, the lever 17 on the heart-shaped chuck 3 is horizontally abutted against the ruler surface 19 of the tool-aligning ruler 13. After the tool alignment is completed, the heart-shaped chuck 3 and the positioning core shaft 1 are relatively fixed by the tightening screw 18.

[0037] In this embodiment, the heart-shaped chuck 3 includes a chuck body 20, a lever 17 integrally connected to the chuck body 20, a heart-shaped hole 21 arranged on the chuck body 20 for installing the positioning core shaft 1, and a tightening screw 18 arranged on the chuck body 20 for fixing the positioning core shaft 1.

[0038] The off-line tool setting device for hob grinding of this embodiment further comprises a dial 22 arranged on the rotating spindle of the gear grinder, the dial 22 is provided with a positioning block 23, and the positioning block 23 is provided with a positioning groove 24 adapted to the lever 17.

[0039] In this embodiment, the positioning mandrel 1 and the heart-shaped chuck 3 are both provided in two sets for alternate use on the gear grinding machine and the runout instrument.

[0040] The method of using this embodiment includes the following steps:

[0041] (1) Preparation: prepare two sets of positioning mandrels 1 and two sets of heart-shaped chucks 3, and install the hob 5 on one set of positioning mandrels 1;

[0042] (2) Offline clamping and tool setting: pre-install the heart-shaped chuck 3 on the outer circle of one end of the positioning mandrel 1 on which the hob 5 is installed, and then use the two pins 14 and 15 of the runout meter 2 to support the two ends of the positioning mandrel 1, and use the first tool setting module 6 on the runout meter 2 to circumferentially position the tooth groove 16 of the hob 5 on the positioning mandrel 1 (the tool setting teeth 10 are inserted into the tooth groove 16 of the hob 5), and then use the second tool setting module 7 on the runout meter 2 to adjust the circumferential position of the lever 17 on the heart-shaped chuck 3 so that one side of the lever 17 is against the ruler surface 19 of the tool setting ruler 13. After it is in place, use the tightening screw 18 to fix the heart-shaped chuck 3 on the positioning mandrel 1;

[0043] (3) Online clamping and grinding: After the offline clamping and tool setting is completed, the positioning mandrel 1 with the hob 5 and the heart-shaped chuck 3 is moved as a whole between the two thimbles of the gear grinding machine, and the lever 17 on the heart-shaped chuck 3 is positioned in the positioning groove 24 of the positioning block 23 of the gear grinding machine dial 22 to achieve the circumferential positioning of the hob 5; after it is in place, the gear grinding machine is turned on to grind the tooth shape of the hob 5. After the grinding is completed, the hob 5 is removed from the positioning mandrel 1;

[0044] During the grinding process, the next hob 5 to be ground is mounted on another set of positioning mandrels 1 by utilizing the motorized grinding time of the gear grinding machine, and then the offline clamping and tool setting of step (2) and the online clamping and grinding of step (3) are performed in sequence. In this way, offline clamping and tool setting and online clamping and grinding of the hobs 5 in batch grinding conditions are performed simultaneously.

[0045] The beneficial effects of this embodiment are:

[0046] By arranging the first tool setting module 6 and the second tool setting module 7 on the runout meter 2, the tool setting and alignment work that is conventionally required to be performed on the gear grinding machine can be completed offline on the runout meter 2 in advance, thereby reducing the clamping preparation time of the hob 5 on the gear grinding machine and improving the production efficiency of the hob 5 gear grinding process under mass production conditions.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An off-line tool setting device for hob grinding, characterized in that: It includes a positioning mandrel for clamping a hob, a runout meter for installing the positioning mandrel, a heart-shaped chuck installed on the outer circle of one end of the positioning mandrel, and a first tool setting module for positioning the circumferential position angle of the hob and a second tool setting module for positioning the circumferential position of the heart-shaped chuck, which are respectively arranged on the base workbench of the runout meter; the first tool setting module includes a first seat block arranged on the base workbench of the runout meter, a first column erected upward on the first seat block, and a tool setting tooth arranged on the top of the first column and horizontally cantilevered; the second tool setting module includes a second seat block arranged on the base workbench of the runout meter, a second column erected upward on the second seat block, and a tool setting ruler arranged on the top of the second column and horizontally cantilevered.

2. The off-line tool setting device for hob grinding according to claim 1, characterized in that: The deflection meter is provided with a front ejector pin and a rear ejector pin, and both ends of the positioning mandrel are respectively provided with a center hole, and the positioning mandrel is clamped between the front ejector pin and the rear ejector pin of the deflection meter through the center hole.

3. The off-line tool setting device for hob grinding according to claim 1, characterized in that: The first seat block of the first tool setting module is movably arranged on the base workbench of the yaw meter.

4. The off-line tool setting device for hob grinding according to claim 3, characterized in that: The upper tooth surface of the tool teeth of the first tool setting module is a horizontally arranged plane and is arranged at the same height as the central axis of the positioning core shaft, and the lower tooth surface of the tool teeth of the first tool setting module is an inclined surface arranged obliquely.

5. The off-line tool setting device for hob grinding according to claim 1, characterized in that: During tool setting, the tool setting teeth of the first tool setting module are clamped in the tooth grooves of the hob.

6. The off-line tool setting device for hob grinding according to claim 1, characterized in that: The tool setting ruler of the second tool setting module is arranged at a position close to the heart-shaped chuck.

7. The off-line tool setting device for hob grinding according to claim 6, characterized in that: The second seat block of the second tool setting module is fixed to the base workbench of the runout instrument by fastening screws.

8. The off-line tool setting device for hob grinding according to claim 6, characterized in that: The heart-shaped chuck is provided with a lever and a tightening screw for fixing the positioning core shaft. When aligning the tool, the lever on the heart-shaped chuck is horizontally abutted against the ruler surface of the tool-aligning ruler. After the tool alignment is completed, the heart-shaped chuck and the positioning core shaft are relatively fixed by the tightening screw.

9. The off-line tool setting device for hob grinding according to claim 8, characterized in that: The heart-shaped chuck comprises a chuck body, a lever integrally connected to the chuck body, a heart-shaped hole arranged on the chuck body for installing a positioning mandrel, and a tightening screw arranged on the chuck body for fixing the positioning mandrel.

10. The off-line tool setting device for hob grinding according to claim 9, characterized in that: It also includes a dial arranged on the rotating main shaft of the gear grinder, the dial is provided with a positioning block, and the positioning block is provided with a positioning groove adapted to the shift rod; the positioning mandrel and the chicken heart chuck are both provided in two sets for alternate use on the gear grinder and the deflection instrument.

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