Guiding device and guiding compensation method for tool rest of gear shaper and gear shaper

Abstract

The invention discloses a guiding device and a guiding compensation method for a tool rest of a gear shaping machine and the gear shaping machine, and relates to the technical field of gear machining, the guiding device comprises a fixing frame and the tool rest, the fixing frame is provided with a lead body, and an abutting part arranged on the inner side of the lead body is embedded in the tool rest in a sliding mode. And the lead main body and the guide shaft clamp the pressure stabilizing head, and on the basis, the inner taper sleeve in contact with the pressure stabilizing head is provided with a tapered opening which is shrunk outwards. When the tool rest deviates and pushes the abutting part and the lead body to face outwards, the clamping force on the pressure stabilizing head is enhanced through the pressure of the lead body at the moment, the damping of inward shrinkage of the pressure stabilizing head is increased, and then the abutting part and the lead body move outwards to overcome the damping of the pressure stabilizing head, the pressure of the pressure stabilizing spring and the pressure of the compensation spring. Compared with the prior art, the resistance to stress in the non-swing direction of the tool rest is greatly enhanced, the reduced guide rigidity after the compensation spring compensates the gap can be improved, and the problems that the deviation prevention performance of the tool rest becomes poor, and gear machining is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, and in particular to a guide device of a gear shaping machine tool holder, a guide compensation method and a gear shaping machine. Background Art

[0002] The process of gear processing includes heat treatment and finishing of tooth surface, and finishing methods include gear hobbing and gear shaping. Gear shaping is to use the tool of gear shaping machine to process the tooth shape of gear, rack or other wind power parts.

[0003] The gear shaping machine is a metal cutting machine tool. The specific processing process is to first fix the blank to be processed on the workbench, and then move the tool holder of the shaping machine forward so that the gear shaping cutter under the tool holder of the shaping machine can radially cut into the blank and make a rotational motion. At the same time, the gear shaping cutter installed on the cutter shaft makes a reciprocating cutting motion up and down through the crank mechanism. Finally, because the processed blank is a large wind power component, the high-speed and large gear shaping machine used uses a tool release form, that is, the gear shaping cutter is required to return. Specifically, the tool holder swings backward to drive the gear shaping cutter to release the blank.

[0004] The tool holder is a swingable motion structure, so in the prior art, the tool holder is equipped with a guide mechanism, which provides the tool holder with sufficient guide rigidity to ensure that the gear shaping cutter can both stably perform cutting motion and flexibly swing.

[0005] References Figure 1 The tool holder structure of the existing gear shaping machine shown in the figure comprises a fixed frame, a tool holder 2 and a tool shaft 1 arranged in the tool holder 2, a gear shaping cutter is provided at the bottom of the tool shaft 1, a tool letting motor 3 is provided in the fixed frame, the tool letting motor 3 is connected to the tool holder 2, a guide groove 4 is provided on the lower end side of the tool holder 2, a slidable guide mechanism 5 is provided in the fixed frame, the inner end of the guide mechanism 5 extends into the guide groove 4 to resist the tool holder 2, and a pre-stressed pressure spring 6 is provided at the outer end of the guide mechanism 5. When the tool letting motor 3 drives the tool holder 2 to swing frequently, causing the inner end of the guide mechanism 5 to be worn, the guide mechanism 5 is pushed by the pre-stressed pressure spring 6 to compensate for the gap caused by the wear.

[0006] When the pressure spring 6 releases the pre-compression pressure to push the guide mechanism 5, the guide stiffness applied by the pressure spring 6 to the tool holder 2 through the guide mechanism 5 will be reduced. When machining gears, the tool holder 2 is likely to deviate, and the anti-deflection performance of the tool holder 2 deteriorates, affecting the machining of the gears. Summary of the invention

[0007] One of the purposes of the present invention is to improve the problem in the prior art that after the guide mechanism compensates for the gap caused by wear through the pre-stressed pressure spring, the guiding stiffness applied to the tool holder will be reduced, thereby causing the anti-deflection performance of the tool holder to deteriorate and affecting gear processing.

[0008] A second object of the present invention is to provide a guidance compensation method.

[0009] A third object of the present invention is to provide a gear shaping machine.

[0010] To achieve one of the above purposes, the present invention adopts the following technical solution: a guiding device for a tool holder of a gear shaping machine, comprising a fixed frame and a tool holder in the fixed frame, the tool holder is equipped with a tool shaft, the bottom of the tool shaft is exposed outside the tool holder, a gear shaping cutter is installed at the bottom of the tool shaft, the tool holder and the fixed frame are clearance-matched, the fixed frame is equipped with a tool letting motor, and the tool letting motor is connected to the tool holder.

[0011] A guide groove is provided at the lower end of the tool holder, a slide groove corresponding to the guide groove is provided in the fixed frame, a lead body is slidably installed in the slide groove, a pressing portion is provided at the inner end of the lead body, and the pressing portion is slidably matched with the guide groove.

[0012] A fixed head is installed in the slide groove, a guide shaft is arranged at the outer end of the lead body, the guide shaft is telescopically connected to the fixed head, a pre-stressed compensation spring is arranged between the guide shaft and the fixed head, and the pressure applied to the lead body by the compensation spring causes the pressing part to press against the tool holder.

[0013] An inner cone sleeve is fixed in the slide groove, and the cone-shaped mouth of the inner cone sleeve is a structure that gradually narrows from the inside to the outside.

[0014] There is a gap between the lead body and the guide shaft, an annular groove for accommodating a pressure stabilizing head is provided between the lead body and the guide shaft, a pressure stabilizing spring is provided between the annular groove and the pressure stabilizing head, and the pressure stabilizing head abuts against the tapered end face of the inner cone sleeve.

[0015] In the above technical scheme, when the tool needs to be let go, the embodiment of the present invention drives the tool holder and the tool shaft in the tool holder to swing through the tool letting motor. During this process, the guide body in the fixed frame slide groove presses the guide shaft through the pre-loaded compensation spring pressure, the guide shaft presses the pressure stabilizing head, the pressure stabilizing head presses the lead body, and finally the lead body presses the pressing part, so that the pressing part presses against the tool holder to resist the stress of the non-swinging direction of the tool holder.

[0016] When the tool holder swings, the pressing part slides along the guide groove of the tool holder to guide the tool holder.

[0017] When the pressing part is worn, the pre-loaded compensating spring pressure pushes the cutter shaft, the lead body and the pressing part inward to compensate for the gap caused by the wear.

[0018] When the cutter shaft and the lead body move inward, the pressure stabilizing head is driven to move together. The pressure stabilizing head is pushed by the pressure stabilizing spring and moves along the tapered end face of the inner cone sleeve that expands inward.

[0019] At this time, when the tool holder has non-swinging direction stress, pushing the pressing part and the lead body to move outward, the pressure applied to the lead body is resisted by the compensation spring. At the same time, the non-swinging direction stress of the tool holder is resisted by the restriction of the outward-shrinking tapered mouth on the pressure stabilizing head, the clamping of the lead body and the guide shaft on the pressure stabilizing head, and the restriction of the pressure stabilizing head by the pressure of the pressure stabilizing spring.

[0020] The beneficial effects of the present invention are: The present invention clamps the pressure stabilizing head by means of a lead body and a guide shaft, and on this basis, an inner tapered sleeve in contact with the pressure stabilizing head is provided with an outwardly shrinking tapered opening. When stress in the non-swinging direction appears on the tool holder, pushing the pressing part and the lead body to move outward, the pressure of the lead body moving outward strengthens the clamping force of the lead body and the guide shaft on the pressure stabilizing head, thereby increasing the damping of the retraction of the pressure stabilizing head. By limiting the pressure stabilizing head by the inner tapered sleeve, the clamping damping of the lead body and the guide shaft on the pressure stabilizing head is cleverly utilized, so that the pressing part and the lead body must overcome the damping of the pressure stabilizing head, the pressure of the pressure stabilizing spring, and the pressure of the compensation spring when moving outward. Compared with the prior art, the resistance to stress in the non-swinging direction of the tool holder is greatly enhanced, and the reduced guide stiffness after the compensation spring compensates for the gap can be improved, thereby avoiding the problem of poor anti-bias performance of the tool holder and affecting gear processing.

[0021] Furthermore, in an embodiment of the present invention, an internal threaded ring is fixedly embedded in the slide groove, the fixing head is located in the internal threaded ring, and the fixing head is threadedly connected to the internal threaded ring.

[0022] Furthermore, in an embodiment of the present invention, a gasket is provided on the inner end surface of the fixing head, and the gasket abuts against the compensation spring.

[0023] Further, in an embodiment of the present invention, a steel rail is arranged in the guide groove, and the pressing portion is in contact with the steel rail in the guide groove.

[0024] Further, in an embodiment of the present invention, the pressing portion is a bearing, the center hole of the bearing is adapted to a center shaft, the center shaft is embedded in the center hole of the bearing, and the center shaft is connected to the lead body.

[0025] Furthermore, in an embodiment of the present invention, the guiding device of the gear shaping machine tool holder also includes a crank, an adjusting rod, a hinged joint and an adapter, the crank is movably connected to the upper end of the adjusting rod, the hinged joint is movably connected to the lower end of the adjusting rod, the adapter is fixed to the upper end of the tool shaft, and the adapter is rotatably connected to the hinged joint.

[0026] Furthermore, in an embodiment of the present invention, the tool holder is rotatably mounted on a turbine guide sleeve, an inner wall of the turbine guide sleeve is provided with a tooth groove, and an outer portion of the adapter is provided with teeth that engage with the tooth groove.

[0027] A turbine is arranged in the tool holder, and the turbine is connected to a turbine guide sleeve. The turbine guide sleeve is driven to rotate by the turbine, thereby driving the adapter and the tool shaft to rotate.

[0028] In order to achieve the second of the above-mentioned objectives, the present invention adopts the following technical solution: a guide compensation method, the guide compensation method is based on the guide device of the gear shaping machine tool holder described in one of the above-mentioned invention objectives, and the guide compensation method comprises the following steps: When the tool needs to be let go, the tool holder and the tool shaft in the tool holder are driven to swing by the tool letting motor. During this process, the guide body in the fixed frame slide slot presses the guide shaft through the pre-loaded compensation spring pressure, the guide shaft presses the pressure stabilizing head, the pressure stabilizing head presses the lead body, and finally the lead body presses the pressing part, so that the pressing part presses against the tool holder to resist the stress of the tool holder in the non-swinging direction.

[0029] When the tool holder swings, the pressing part slides along the guide groove of the tool holder to guide the tool holder.

[0030] When the pressing part is worn, the pre-loaded compensating spring pressure pushes the cutter shaft, the lead body and the pressing part inward to compensate for the gap caused by the wear.

[0031] When the cutter shaft and the lead body move inward, the pressure stabilizing head is driven to move together. The pressure stabilizing head is pushed by the pressure stabilizing spring and moves along the tapered end face of the inner cone sleeve that expands inward.

[0032] At this time, when the tool holder has non-swinging direction stress, pushing the pressing part and the lead body to move outward, the pressure applied to the lead body is resisted by the compensation spring. At the same time, the non-swinging direction stress of the tool holder is resisted by the restriction of the outward-shrinking tapered mouth on the pressure stabilizing head, the clamping of the lead body and the guide shaft on the pressure stabilizing head, and the restriction of the pressure stabilizing head by the pressure of the pressure stabilizing spring.

[0033] Furthermore, in an embodiment of the present invention, in the above steps, when the tool holder swings, the pressing portion of the bearing and the guide groove of the tool holder perform rolling friction.

[0034] In order to achieve the third of the above-mentioned objectives, the present invention adopts the following technical solution: a gear shaping machine having the guide device of the gear shaping machine tool holder described in one of the above-mentioned invention objectives. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a gear shaping machine tool holder in the prior art.

[0036] Figure 2 It is a schematic structural diagram of a gear shaping machine tool holder according to an embodiment of the present invention.

[0037] Figure 3 It is a schematic structural diagram of the guide device of the gear shaping machine tool holder according to an embodiment of the present invention.

[0038] 1. Knife shaft, 2. Knife holder, 3. Knife letting motor, 4. Guide groove, 5. Guide mechanism, 6. Pressure spring; 10. fixing frame, 11. slide groove, 12. internal thread ring; 20. lead body, 21. pressing part, 22. fixed head, 22.1. gasket, 23. guide shaft, 24. compensation spring, 25. inner cone sleeve, 26. pressure stabilizing head, 27. pressure stabilizing spring, 28. center shaft; 30. Rails; 40. crank, 41. adjusting rod, 42. hinge joint, 43. adapter; 50. Turbine guide sleeve, 51. Turbine. DETAILED DESCRIPTION

[0039] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] For the purpose of simplicity and illustration, the principles of the embodiments are described mainly by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious. For those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known guidance compensation methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other. Example 1

[0043] It should be noted that the drawings in the specification are the contents of the specification. The structural shapes, connection relationships, matching relationships, and positional relationships that can be obtained without any doubt in the drawings in the specification should be understood as the contents of the specification.

[0044] A guide device for a gear shaping machine tool holder, such as Figure 2 As shown, it includes a fixed frame 10 and a tool holder 2 in the fixed frame 10, the tool holder 2 is equipped with a tool shaft 1, the bottom of the tool shaft 1 is exposed outside the tool holder 2, a gear cutter is installed at the bottom of the tool shaft 1, the tool holder 2 and the fixed frame 10 are clearance-matched, the fixed frame 10 is equipped with a tool letting motor 3, and the tool letting motor 3 is connected to the tool holder 2.

[0045] like Figure 2 , Figure 3 As shown, a guide groove 4 is provided at the lower end side of the tool holder 2, a slide groove 11 corresponding to the guide groove 4 is provided in the fixed frame 10, a guide body 20 is slidably installed in the slide groove 11, a pressing portion 21 is provided at the inner end of the guide body 20, and the pressing portion 21 is slidably matched with the guide groove 4.

[0046] like Figure 3 As shown, a fixed head 22 is installed in the slide groove 11, a guide shaft 23 is set at the outer end of the lead body 20, the guide shaft 23 is telescopically connected to the fixed head 22, and a pre-stressed compensation spring 24 is set between the guide shaft 23 and the fixed head 22. The pressure applied to the lead body 20 by the compensation spring 24 causes the pressing part 21 to press against the tool holder 2.

[0047] An inner cone sleeve 25 is fixed in the slide groove 11 , and the cone-shaped opening of the inner cone sleeve 25 is a structure that gradually narrows from the inside to the outside.

[0048] There is a gap between the lead body 20 and the guide shaft 23 . An annular groove for accommodating a pressure stabilizing head 26 is provided between the lead body 20 and the guide shaft 23 . A pressure stabilizing spring 27 is provided between the annular groove and the pressure stabilizing head 26 . The pressure stabilizing head 26 abuts against the tapered end surface of the inner tapered sleeve 25 .

[0049] Implementation steps: When the tool needs to be let go, the tool holder 2 and the tool shaft 1 in the tool holder 2 are driven to swing by the tool letting motor 3. During this process, the lead body 20 in the slide groove 11 of the fixed frame 10 presses the guide shaft 23 through the pressure of the pre-loaded compensation spring 24, the guide shaft 23 presses the pressure stabilizing head 26, and the pressure stabilizing head 26 presses the lead body 20. Finally, the lead body 20 presses the pressing part 21, so that the pressing part 21 presses against the tool holder 2 to resist the stress (offset) in the non-swinging direction of the tool holder 2.

[0050] When the tool holder 2 swings, the pressing portion 21 slides along the guide groove 4 of the tool holder 2 to guide the tool holder 2 .

[0051] When the pressing portion 21 is worn, the pressure of the pre-loaded compensation spring 24 pushes the knife shaft 1, the lead body 20 and the pressing portion 21 to move inward to compensate for the gap caused by the wear.

[0052] When the knife shaft 1 and the lead body 20 move inward, the pressure stabilizing head 26 is driven to move together. Under the push of the pressure stabilizing spring 27, the pressure stabilizing head 26 moves along the tapered end surface of the inner tapered sleeve 25 that expands inward.

[0053] At this time, when the tool holder 2 has non-swinging direction stress (offset), pushing the pressing part 21 and the lead body 20 to move outward, the pressure applied to the lead body 20 is resisted by the compensation spring 24, and at the same time, the non-swinging direction stress of the tool holder 2 is resisted by the restriction of the outward-shrinking tapered mouth on the stabilizing head 26, the clamping of the lead body 20 and the guide shaft 23 on the stabilizing head 26, and the restriction of the pressure of the stabilizing head 26 by the pressure of the stabilizing spring 27.

[0054] The advantage of the present invention is that the lead body 20 and the guide shaft 23 clamp the stabilizing head 26, and on this basis, the inner tapered sleeve 25 in contact with the stabilizing head 26 is provided with an outwardly reduced tapered opening. When the tool holder 2 has stress in the non-swinging direction, pushing the pressing portion 21 and the lead body 20 to move outward, the pressure of the lead body 20 moving outward strengthens the clamping force of the lead body 20 and the guide shaft 23 on the stabilizing head 26, so that the damping of the retraction of the stabilizing head 26 becomes larger. By limiting the stabilizing head 26 by the inner tapered sleeve 25, the clamping damping of the stabilizing head 26 by the lead body 20 and the guide shaft 23 is cleverly utilized, so that the pressing portion 21 and the lead body 20 must overcome the damping of the stabilizing head 26, the pressure of the stabilizing spring 27, and the pressure of the compensation spring 24 when moving outward. Compared with the prior art, the resistance to stress in the non-swinging direction of the tool holder 2 is greatly enhanced, and the guide stiffness reduced after the compensation spring 24 compensates for the gap can be improved, thereby avoiding the problem that the anti-bias performance of the tool holder 2 deteriorates and affects gear processing.

[0055] Specifically, Figure 3 As shown, the internal thread ring 12 is fixedly embedded in the slide groove 11, the fixed head 22 is located in the internal thread ring 12, and the fixed head 22 is threadedly connected with the internal thread ring 12. By twisting the fixed head 22, the pre-compression elastic force of the compensation spring 24 can be adjusted.

[0056] Specifically, Figure 3 As shown, a gasket 22 . 1 is provided on the inner end surface of the fixing head 22 , and the gasket 22 . 1 abuts against the compensation spring 24 .

[0057] Specifically, Figure 3 As shown, a steel rail 30 is arranged in the guide groove 4 , and the pressing portion 21 contacts the steel rail 30 in the guide groove 4 .

[0058] Specifically, Figure 3 As shown, the pressing part 21 is a bearing, the center hole of the bearing is adapted to the center shaft 28, the center shaft 28 is embedded in the center hole of the bearing, and the center shaft 28 is connected to the lead body 20. When the tool holder 2 swings, the pressing part 21 of the bearing and the guide groove 4 of the tool holder 2 are subjected to rolling friction, which can reduce the wear of the pressing part 21.

[0059] Specifically, Figure 2 As shown, the guide device of the gear shaping machine tool holder also includes a crank 40, an adjusting rod 41, a hinged joint 42 and an adapter 43. The crank 40 is movably connected to the upper end of the adjusting rod 41, the hinged joint 42 is movably connected to the lower end of the adjusting rod 41, the adapter 43 is fixed to the upper end of the tool shaft 1, and the adapter 43 is rotatably connected to the hinged joint 42.

[0060] In the prior art, the crank 40 is driven to make the adjusting rod 41 push the knife shaft 1 to reciprocate up and down. This is the conventional structure and operation mode of the prior art and has not been improved, so it will not be explained in detail. Please refer to the driving method of the engine in the prior art.

[0061] More specifically, if Figure 2 As shown, the tool holder 2 is rotatably mounted on the turbine 51 and the guide sleeve 50, the inner wall of the turbine 51 and the guide sleeve 50 is provided with a tooth groove, and the outer surface of the adapter 43 is provided with teeth, which mesh with the tooth groove.

[0062] A turbine 51 is provided in the tool holder 2 , and the turbine 51 is connected to a turbine 51 guide sleeve 50 , and the turbine 51 guide sleeve 50 is driven to rotate by the turbine 51 , thereby driving the adapter 43 and the tool shaft 1 to rotate.

[0063] The blade shaft 1 reciprocates up and down, so that the teeth of the adapter 43 slide up and down along the tooth grooves on the inner wall of the turbine 51 guide sleeve 50. When the turbine 51 drives the turbine 51 guide sleeve 50 to rotate, the teeth and the tooth grooves are engaged to drive the adapter 43 and the blade shaft 1 to rotate. In addition, the conventional structure and operation mode in the prior art have not been improved, so they are not explained in detail. Example 2

[0064] A guide compensation method, the guide compensation method is based on the guide device of the gear shaping machine tool holder in the above embodiment 1, and the guide compensation method comprises the following steps: When the tool needs to be let go, the tool holder 2 and the tool shaft 1 in the tool holder 2 are driven to swing by the tool letting motor 3. During this process, the lead body 20 in the slide groove 11 of the fixed frame 10 presses the guide shaft 23 through the pressure of the pre-loaded compensation spring 24, the guide shaft 23 presses the pressure stabilizing head 26, the pressure stabilizing head 26 presses the lead body 20, and finally the lead body 20 presses the pressing part 21, so that the pressing part 21 presses against the tool holder 2 to resist the stress of the tool holder 2 in the non-swinging direction.

[0065] When the tool holder 2 swings, the pressing portion 21 slides along the guide groove 4 of the tool holder 2 to guide the tool holder 2 .

[0066] When the pressing portion 21 is worn, the pressure of the pre-loaded compensation spring 24 pushes the knife shaft 1, the lead body 20 and the pressing portion 21 to move inward to compensate for the gap caused by the wear.

[0067] When the knife shaft 1 and the lead body 20 move inward, the pressure stabilizing head 26 is driven to move together. Under the push of the pressure stabilizing spring 27, the pressure stabilizing head 26 moves along the tapered end surface of the inner tapered sleeve 25 that expands inward.

[0068] At this time, when the tool holder 2 has non-swinging direction stress, pushing the pressing part 21 and the lead body 20 to move outward, the pressure applied to the lead body 20 is resisted by the compensation spring 24, and at the same time, the non-swinging direction stress of the tool holder 2 is resisted by the restriction of the outward-shrinking tapered mouth on the stabilizing head 26, the clamping of the lead body 20 and the guide shaft 23 on the stabilizing head 26, and the restriction of the pressure of the stabilizing head 26 by the pressure of the stabilizing spring 27.

[0069] When the tool holder 2 deviates, that is, when stress in the non-swinging direction occurs, the present invention will push the lead body 20 to strengthen the clamping force of the lead body 20 and the guide shaft 23 on the stabilizing head 26, so that the damping of the retraction of the stabilizing head 26 becomes larger, and the restriction of the inner cone sleeve 25 on the stabilizing head 26 can cleverly utilize the clamping damping of the stabilizing head 26, so that the pressing part 21 and the lead body 20 move outward, and must overcome the damping of the stabilizing head 26, the pressure of the stabilizing spring 27, and the pressure of the compensation spring 24. Compared with the prior art, the resistance to stress in the non-swinging direction of the tool holder 2 is greatly enhanced, and the guide stiffness reduced after the compensation spring 24 compensates for the gap can be improved, so as to avoid the problem that the anti-bias performance of the tool holder 2 deteriorates and affects the gear processing.

[0070] Specifically, in the above steps, when the tool holder 2 swings, the pressing portion 21 of the bearing and the guide groove 4 of the tool holder 2 perform rolling friction, thereby reducing the wear of the pressing portion 21 . Example 3

[0071] A gear shaping machine comprises the guide device of the gear shaping machine tool holder in the above-mentioned embodiment 1.

[0072] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. A guide device for a tool holder of a gear shaping machine, comprising a fixed frame and a tool holder in the fixed frame, wherein the tool holder is equipped with a tool shaft, the bottom of the tool shaft is exposed outside the tool holder, a gear shaping cutter is installed at the bottom of the tool shaft, the tool holder and the fixed frame are clearance-matched, the fixed frame is equipped with a tool letting motor, and the tool letting motor is connected to the tool holder; It is characterized in that A guide groove is provided at the lower end of the tool holder, a slide groove corresponding to the guide groove is provided in the fixed frame, a guide body is slidably installed in the slide groove, a pressing portion is provided at the inner end of the guide body, and the pressing portion is slidably matched with the guide groove; A fixed head is installed in the slide groove, a guide shaft is arranged at the outer end of the lead body, the guide shaft is telescopically connected to the fixed head, a pre-stressed compensation spring is arranged between the guide shaft and the fixed head, and the pressure applied to the lead body by the compensation spring causes the pressing part to press against the tool holder; An inner cone sleeve is fixed in the slide groove, and the cone mouth of the inner cone sleeve is a structure that gradually narrows from the inside to the outside; There is a gap between the lead body and the guide shaft, an annular groove for accommodating a pressure stabilizing head is provided between the lead body and the guide shaft, a pressure stabilizing spring is provided between the annular groove and the pressure stabilizing head, and the pressure stabilizing head abuts against the tapered end face of the inner cone sleeve.

2. The guide device of the gear shaping machine tool holder according to claim 1, characterized in that: An internal thread ring is fixedly embedded in the slide groove, the fixing head is located in the internal thread ring, and the fixing head is threadedly connected to the internal thread ring.

3. The guide device of the gear shaping machine tool holder according to claim 1, characterized in that: A gasket is arranged on the inner end surface of the fixing head, and the gasket abuts against the compensation spring.

4. The guide device of the gear shaping machine tool holder according to claim 1, characterized in that: A steel rail is arranged in the guide groove, and the pressing portion contacts the steel rail in the guide groove.

5. The guide device of the gear shaping machine tool holder according to claim 1, characterized in that: The pressing part is a bearing, the center hole of the bearing is adapted to the center shaft, the center shaft is embedded in the center hole of the bearing, and the center shaft is connected to the lead body.

6. The guide device of the gear shaping machine tool holder according to claim 1, characterized in that: The guide device of the gear shaping machine tool holder also includes a crank, an adjusting rod, a hinged joint and an adapter. The crank is movably connected to the upper end of the adjusting rod, the hinged joint is movably connected to the lower end of the adjusting rod, the adapter is fixed to the upper end of the tool shaft, and the adapter is rotatably connected to the hinged joint.

7. The guide device of the gear shaping machine tool holder according to claim 6, characterized in that: The tool holder is rotatably mounted with a turbine guide sleeve, the inner wall of the turbine guide sleeve is provided with a tooth groove, and the outer side of the adapter is provided with teeth, which mesh with the tooth groove; A turbine is arranged in the tool holder, and the turbine is connected to a turbine guide sleeve. The turbine guide sleeve is driven to rotate by the turbine, thereby driving the adapter and the tool shaft to rotate.

8. A guidance compensation method, characterized in that: The guide compensation method is based on the guide device of the gear shaping machine tool holder according to any one of claims 1 to 7, and the guide compensation method comprises the following steps: When the tool needs to be let go, the tool holder and the tool shaft in the tool holder are driven to swing by the tool letting motor. During this process, the guide body in the slide slot of the fixed frame presses the guide shaft through the pre-loaded compensation spring pressure, the guide shaft presses the pressure stabilizing head, the pressure stabilizing head presses the guide body, and finally the guide body presses the pressing part, so that the pressing part presses against the tool holder to resist the stress of the tool holder in the non-swinging direction. When the tool holder swings, the pressing part slides along the guide groove of the tool holder to guide the tool holder; When the pressing part is worn, the pre-loaded compensating spring pressure pushes the cutter shaft, the lead body and the pressing part inward to compensate for the gap caused by wear; When the cutter shaft and the lead body move inward, the pressure stabilizing head is driven to move together. The pressure stabilizing head is pushed by the pressure stabilizing spring and moves along the tapered end surface of the inner cone sleeve that expands inward. At this time, when the tool holder has non-swinging direction stress, pushing the pressing part and the lead body to move outward, the pressure applied to the lead body is resisted by the compensation spring. At the same time, the non-swinging direction stress of the tool holder is resisted by the restriction of the outward-shrinking tapered mouth on the pressure stabilizing head, the clamping of the lead body and the guide shaft on the pressure stabilizing head, and the restriction of the pressure stabilizing head by the pressure of the pressure stabilizing spring.

9. The guidance compensation method according to claim 8, characterized in that: In the above steps, when the tool holder swings, the pressing portion of the bearing and the guide groove of the tool holder are subjected to rolling friction.

10. A gear shaping machine, characterized in that: The gear shaping machine has a guide device for a gear shaping machine tool holder according to any one of claims 1 to 7.

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