A replaceable cutter head for processing worm gear

Abstract

The present application relates to the technical field of cutter heads, and more specifically to a replaceable cutter head for processing worm gears, comprising: a cutter bar, a blade and a lifting member, wherein one end of the cutter bar has a notch, the side wall of the notch has a plurality of slide grooves, the bottom wall of the notch has a through hole, the side wall of the blade has a plurality of convex ribs, the convex ribs correspond to the slide grooves one by one, and the bottom of the blade also has a clamping hole. When the blade is placed in the notch, each convex rib extends into the corresponding slide groove, and the through hole is coaxially arranged with the clamping hole. The lifting member is slidably arranged in the through hole. When the lifting member slides, the lifting member extends into or out of the clamping hole. The utility model makes it easier to replace the blade and helps to improve production efficiency by allowing the convex rib to extend into or out of the slide groove and allowing the lifting member to extend into or out of the clamping hole.

Description

Technical Field

[0001] The present application relates to the technical field of cutter heads, and more specifically to a replaceable cutter head for machining a worm. Background Art

[0002] Milling the worm with a worm thread milling cutter is an important method for worm thread processing. The tools for processing worm threads include disc-type thread milling cutters. The axis of the milling cutter is inclined at a helix angle relative to the axis of the workpiece. The milling cutter performs a rotary cutting motion and moves along the axis of the workpiece at the same time. The workpiece rotates slowly, and the two cooperate to form a spiral motion. The disc thread milling cutter is divided into an integrated disc thread milling cutter and a split disc thread milling cutter according to whether the cutter head is detachable. In the split disc thread milling cutter, the cutter head and the cutter disc are detachable.

[0003] Our company currently has a cutter head for processing worms, which is arranged in a ring and installed on the cutter head. Figure 1 As shown, the cutter head for processing the worm includes a cutter bar 90 and a blade 91, the cutter bar 90 has a mounting groove 901, and the blade 91 is detachably mounted in the mounting groove 901 of the cutter bar 90 through a bolt 92. When the bolt 92 is tightened, the blade 91 is fixed on the cutter bar 90, and when the bolt 92 is loosened, the blade 91 can be replaced. However, since a plurality of cutter heads for processing the worm are arranged in an annular shape on the disc-type thread milling cutter, when the cutter disc rotates circumferentially, each blade 91 contacts and wears the worm workpiece in turn, and the degree of wear of each blade 91 is similar, which also leads to a large number of blades 91 to be replaced each time, and the bolt 92 needs to be screwed multiple times, which is troublesome to replace and reduces production efficiency.

[0004] Therefore, there is a need to provide a replaceable cutter head for machining a worm, which is more convenient for replacing blades and helps to improve production efficiency. Summary of the invention

[0005] The main purpose of the present application is to provide a replaceable cutter head for processing a worm gear, wherein the replaceable cutter head for processing a worm gear comprises a cutter rod, a blade and a lifting member, wherein one end of the cutter rod has a notch, the side wall of the notch has a plurality of slide grooves, the bottom wall of the notch has a through hole, the side wall of the blade has a plurality of convex ribs, the convex ribs correspond to the slide grooves one by one, and the bottom of the blade also has a clamping hole, when the blade is placed in the notch, each of the convex ribs extends into the corresponding slide groove, and the through hole is coaxially arranged with the clamping hole, the lifting member is slidably arranged in the through hole, when the lifting member slides, the lifting member extends into or out of the clamping hole, and the blade is quickly fixed or disassembled by making the convex rib extend into or out of the slide groove, and making the lifting member extend into or out of the clamping hole. Compared with the prior art, it has the advantages of more convenient blade replacement and helping to improve production efficiency.

[0006] Another object of the present application is to provide a replaceable tool head for processing a worm gear, wherein the replaceable tool head for processing a worm gear also includes a plurality of elastic parts, the lifting part has a shoulder portion, the through hole is a stepped hole, the shoulder portion is located at the end of the through hole having a larger aperture, the two ends of the elastic part respectively abut against the shoulder portion and the stepped surface of the through hole, and the elastic part enables the lifting part to extend out of the through hole by a predetermined distance under normal conditions.

[0007] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a replaceable cutter head for machining a worm, wherein the replaceable cutter head for machining a worm comprises:

[0008] a knife rod, wherein one end of the knife rod has a notch, the side wall of the notch has a plurality of slide grooves, and the bottom wall of the notch has a through hole; and

[0009] a blade, wherein the side wall of the blade has a plurality of convex ribs, the convex ribs correspond to the slide grooves one by one, and the bottom of the blade also has a clamping hole, when the blade is placed in the notch, each of the convex ribs extends into the corresponding slide groove, and the through hole is coaxially arranged with the clamping hole; and

[0010] A lifting member is slidably disposed in the through hole. When the lifting member slides, the lifting member extends into or out of the clamping hole.

[0011] In one or more embodiments of the present application, the replaceable tool head for processing the worm gear also includes a plurality of elastic parts, the lifting part has a shoulder portion, the through hole is a stepped hole, the shoulder portion is located at the end of the through hole having a larger aperture, and the two ends of the elastic part respectively abut against the shoulder portion and the stepped surface of the through hole.

[0012] In one or more embodiments of the present application, the number of the elastic members is two, both of which are mounted on the lifting member, the maximum radial dimension of each of the elastic members is larger than the aperture of the smaller cavity of the through hole, and the maximum radial dimension of each of the elastic members is smaller than the aperture of the larger cavity of the through hole.

[0013] In one or more embodiments of the present application, an end of the lifting member facing away from the blade has an annular groove.

[0014] In one or more embodiments of the present application, both end edges of the annular groove are rounded.

[0015] In one or more embodiments of the present application, the lifting member includes a rod body and a contact member, the contact member is detachably mounted on the rod body, the annular groove is arranged at one end of the rod body away from the contact member, and the contact member is arranged at one end of the rod body close to the blade.

[0016] In one or more embodiments of the present application, each cross section of the blade in the height direction is rhombus-shaped, and both longer end portions of the blade have an inclined cut surface.

[0017] In one or more embodiments of the present application, one end of the knife rod has a sharp corner, and the notch and the through hole are both located on the sharp corner.

[0018] In one or more embodiments of the present application, a cross-section of an end of the knife rod away from the sharp corner portion is circular, and an end of the knife rod away from the sharp corner portion has a pressing surface.

[0019] In an embodiment of the present application, a replaceable cutter head for processing a worm gear includes a cutter rod, a blade and a lifting member. One end of the cutter rod has a notch, the side wall of the notch has a plurality of slide grooves, the bottom wall of the notch has a through hole, the side wall of the blade has a plurality of convex ribs, the convex ribs correspond to the slide grooves one by one, and the bottom of the blade also has a clamping hole. When the blade is placed in the notch, each convex rib extends into the corresponding slide groove, and the through hole is coaxially arranged with the clamping hole. The lifting member is slidably arranged in the through hole. When the lifting member slides, the lifting member extends into or out of the clamping hole. By extending the convex rib into or out of the slide groove and extending the lifting member into or out of the clamping hole, the blade can be quickly fixed or disassembled. Compared with the prior art, it has the advantages of more convenient blade replacement and helping to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1The figure shows a schematic structural diagram of an existing cutter head for machining a worm;

[0022] Figure 2 The figure shows a schematic structural diagram of a replaceable cutter head for machining a worm according to the utility model;

[0023] Figure 3 The diagram shows a schematic diagram of the structure of the tool bar;

[0024] Figure 4 The figure shows a schematic diagram of the structure when the lifting member is inserted into the blade. DETAILED DESCRIPTION

[0025] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0028] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0029] Application Overview

[0030] Since the disc-type thread milling cutter has multiple cutter heads for processing the worm arranged in a ring shape, when the cutter disc rotates circumferentially, each blade contacts and wears the worm workpiece in turn, and the degree of wear of each blade is similar. This also leads to a large number of blades being replaced each time, and the bolts need to be tightened multiple times, which makes replacement more troublesome and reduces production efficiency.

[0031] Based on the above technical problems, the present application proposes a replaceable cutter head for processing a worm gear, wherein the replaceable cutter head for processing a worm gear has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the replaceable cutter head for processing a worm gear provided by the present application is easy to produce and low in cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0032] Schematic diagram of the replaceable cutter head for machining worm gears.

[0033] refer to Figures 2 to 4 According to a preferred embodiment of the utility model, a replaceable cutter head for processing a worm gear is provided. A plurality of replaceable cutter bodies for processing a worm gear are arranged in a circular array and installed on a cutter disc. When the cutter disc rotates, the replaceable cutter head for processing a worm gear contacts a workpiece to be processed.

[0034] Furthermore, if Figure 2 As shown, the replaceable cutter head for machining a worm comprises a cutter bar 10 and a blade 20 .

[0035] Specifically, a space is provided for installing the blade 20 on the knife bar 10, such as Figure 3 As shown, one end of the blade rod 10 has a notch 1011 , the blade 20 is placed in the notch 1011 , and one end of the blade 20 extends out of the notch 1011 by a predetermined distance.

[0036] It should be noted that in the embodiments of the present application, Figure 2 As shown, each cross section of the blade 20 in the height direction is a rhombus, and both the longer ends of the blade 20 have an inclined cut surface 201; in addition, one end and the top of the notch 1011 are connected to the outside, as shown in FIG. Figure 3 As shown, the other end of the notch 1011 has two side walls that are arranged obliquely and symmetrically to each other, and a drilling cavity 1012 is provided at the intersection of the two side walls, and the drilling cavity 1012 is connected to the notch 1011.

[0037] It should also be noted that in the prior art, after the blade 20 is placed in the notch 1011, the blade 20 is fixedly mounted on the tool rod 10 by a bolt. Since the blades 20 arranged in a ring shape on the tool disc have similar wear speeds, when the blades 20 are worn to a predetermined degree, it is usually necessary to replace the blades 20 in large quantities. At this time, it is inconvenient to tighten the bolts multiple times to replace the blades 20, which affects the overall processing efficiency.

[0038] In view of this, in the embodiments of the present application, Figure 3 As shown, the side wall of the notch 1011 has a plurality of slide grooves 10111. Figure 2 As shown, the side wall of the blade 20 has a plurality of convex ribs 202 , and the convex ribs 202 correspond to the slide grooves 10111 one by one. When the blade 20 is placed in the notch 1011 , each of the convex ribs 202 extends into the corresponding slide groove 10111 .

[0039] It should be noted that when the blade 20 is placed in the notch 1011, the bottom surface of the blade 20 is fitted with the bottom wall of the notch 1011, and the longer end angle of the blade 20 is aligned with the drilling cavity 1012, and then the blade 20 is moved a predetermined distance in the direction of the drilling cavity 1012, so that the rib 202 can be extended into the slide groove 10111. When the rib 202 is extended into the slide groove 10111, the position of the blade 20 in the depth direction of the notch 1011 is limited. It should also be noted that since the blade 20 is in the shape of a rhombus column as a whole, when the cut surface 201 at one end of the blade 20 is severely worn, the processing personnel can rotate the blade 20 by 180° and use the cut surface 201 at the other end of the blade 20 as the cutting surface for processing. In view of this, the rib 20 is provided on all four sides of the blade 20.

[0040] Furthermore, in order to prevent the blade 20 from slipping out of the end of the notch 1011 away from the drilling cavity 1012, as Figure 2 and Figure 3 As shown, the bottom wall of the notch 1011 has a through hole 10112, and the bottom of the blade 20 also has a clamping hole 203. When the blade 20 is placed in the notch 1011, the through hole 10112 is coaxially arranged with the clamping hole 203. In addition, as shown in FIG. Figure 4 As shown, the replaceable tool head for processing the worm further includes a lifting member 30 , and the lifting member 30 is slidably disposed in the through hole 10112 . When the lifting member 30 slides, the lifting member 30 extends into or out of the clamping hole 203 .

[0041] It should be noted that the lifting member 30 normally extends out of the through hole 10112 by a predetermined distance. When the rib 202 extends into the notch 1011, the lifting member 30 moves downward and escapes from the hole 203 and is hidden in the through hole 10112 to avoid interfering with the movement of the blade 20. When the two side walls of the blade 20 abut against the two side walls of the notch 1011 and the rib 202 extends into the notch 1011, the lifting member 30 moves upward and extends into the hole 203 and fits with the hole wall of the hole 203. Due to the restriction of the lifting member 30, it is difficult for the blade 20 to move in a direction away from the drilling cavity 1012.

[0042] It is obvious that by extending the rib 202 into the corresponding slide groove 10111 and extending the lifting member 30 into the corresponding clamping hole 203, the position of the blade 20 is fixed, and during the disassembly and assembly process, only the lifting member 30 needs to move up and down. The assembly speed is faster than screwing the bolts in the prior art, which has the advantages of more convenient blade replacement and helping to improve production efficiency.

[0043] Furthermore, in order to realize that the lifting member 30 extends out of the through hole 10112 by a predetermined distance under normal conditions, as Figure 4 As shown, the replaceable cutter head for processing the worm gear also includes a plurality of elastic members 40, and the lifting member 30 has a shoulder portion 3012. More specifically, the lifting member 30 is rod-shaped as a whole, and the rod member at one end of the lifting member 30 away from the blade 20 is smaller than the rod diameter at the other end of the lifting member 30, thereby forming the shoulder portion 3012. The through hole 10112 is a stepped hole, and the shoulder portion 3012 is located at the end of the through hole 10112 having a larger aperture, and the two ends of the elastic member 40 respectively abut against the shoulder portion 3012 and the stepped surface of the through hole 10112.

[0044] It should be noted that the elastic member 40 is a spring. In order to increase the elasticity, the number of the elastic members 40 is preferably two. The two elastic members 40 are both mounted on the lifting member 30. The maximum radial dimension of each of the elastic members 40 is larger than the aperture of the smaller cavity of the through hole 10112, and the maximum radial dimension of each of the elastic members 40 is smaller than the aperture of the larger cavity of the through hole 10112.

[0045] Furthermore, in order to facilitate the processing personnel to hold the bottom of the lifting member 30 and move the lifting member 30 downward, as shown in FIG. Figure 4 As shown, the end of the lifting member 30 away from the blade 20 has an annular groove 3011. Due to the provision of the annular groove 3011, the end of the lifting member 30 away from the blade 20 forms a handle shape.

[0046] In addition, in order to prevent the edge of the end of the lifting member 30 from being sharp and cutting the processing personnel, the edges of both ends of the annular groove 3011 are chamfered.

[0047] Furthermore, since the end of the lifting member 30 close to the blade 20 often extends into or out of the clamping hole 203, it is easy to wear. In order to reduce the replacement cost, Figure 4 As shown, the lifting member 30 includes a rod body 301 and a contact member 302. The contact member 302 is detachably mounted on the rod body 301 by means of a threaded connection. The annular groove 3011 is arranged at one end of the rod body 301 away from the contact member 302. The contact member 302 is arranged at one end of the rod body 301 close to the blade 20.

[0048] It should be noted that when the rod body 301 moves up and down along the through hole 10112 , the contact member 302 extends into or withdraws from the locking hole 203 .

[0049] Furthermore, if Figure 3 As shown, one end of the knife rod 10 has a sharp corner portion 101, the notch 1011 and the through hole 10112 are both located on the sharp corner portion 101, the main part of the sharp corner portion 101 after removing the notch 1011 provides a support for the blade 20 placed on the notch 1011, and the through hole 10112 penetrates the sharp corner portion 101.

[0050] Furthermore, in order to facilitate the installation of the knife bar 10 on the knife disc, as Figure 2 As shown, a cross-section of the end of the tool rod 10 away from the sharp corner 101 is circular, and the end of the tool rod 10 away from the sharp corner 101 has a clamping surface 102, and an external bolt is threadedly connected to the cutter disc and pressed against the clamping surface 102 to fix the position of the tool rod 10 on the cutter disc.

[0051] In summary, the replaceable cutter head for processing a worm gear based on the embodiment of the present application is explained, which provides the replaceable cutter head for processing a worm gear with advantages such as more convenient blade replacement and helping to improve production efficiency.

[0052] It is worth mentioning that in the embodiment of the present application, the replaceable cutter head for processing the worm has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the replaceable cutter head for processing the worm provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0053] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A replaceable cutter head for machining a worm, characterized in that: The replaceable cutter head for processing the worm comprises a knife rod, wherein one end of the knife rod has a notch, the side wall of the notch has a plurality of slide grooves, and the bottom wall of the notch has a through hole; and a blade, wherein the side wall of the blade has a plurality of convex ribs, the convex ribs correspond to the slide grooves one by one, and the bottom of the blade also has a clamping hole, when the blade is placed in the notch, each of the convex ribs extends into the corresponding slide groove, and the through hole is coaxially arranged with the clamping hole; and A lifting member is slidably disposed in the through hole. When the lifting member slides, the lifting member extends into or out of the clamping hole.

2. The replaceable cutter head for machining a worm according to claim 1, characterized in that: The replaceable tool head for processing the worm gear also includes a plurality of elastic parts. The lifting part has a shoulder portion. The through hole is a stepped hole. The shoulder portion is located at the end of the through hole having a larger aperture. The two ends of the elastic part respectively abut against the shoulder portion and the stepped surface of the through hole.

3. The replaceable cutter head for machining a worm according to claim 2, characterized in that: There are two elastic parts, both of which are mounted on the lifting part. The maximum radial dimension of each elastic part is larger than the aperture of the smaller cavity of the through hole, and the maximum radial dimension of each elastic part is smaller than the aperture of the larger cavity of the through hole.

4. The replaceable cutter head for machining a worm according to claim 2, characterized in that: The lifting member has an annular groove at one end away from the blade.

5. The replaceable cutter head for machining a worm according to claim 4, characterized in that: Both end edges of the annular groove are rounded.

6. The replaceable cutter head for machining a worm according to claim 4, characterized in that: The lifting member comprises a rod body and a contact member, wherein the contact member is detachably mounted on the rod body, the annular groove is arranged at an end of the rod body away from the contact member, and the contact member is arranged at an end of the rod body close to the blade.

7. The replaceable cutter head for machining a worm according to any one of claims 1 to 6, characterized in that: Each cross section of the blade in the height direction is rhombus-shaped, and both longer end portions of the blade have an inclined cut surface.

8. The replaceable cutter head for machining a worm according to claim 7, characterized in that: One end of the knife rod has a sharp corner portion, and the notch and the through hole are both located on the sharp corner portion.

9. The replaceable cutter head for machining a worm according to claim 8, characterized in that: A cross section of the knife rod at one end away from the sharp corner portion is circular, and the knife rod at one end away from the sharp corner portion has a pressing surface.

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