Eccentric milling cutter

Abstract

This utility model discloses a machining eccentric milling cutter, comprising: a tool holder and a cutter head assembly; a tool shank is fixed to one end of the tool holder, and a mounting head is fixed to the end of the tool shank away from the tool holder; the cutter head assembly is mounted on the mounting head, and the cutter head assembly includes a clamping head, which is mounted on the mounting head. The clamping head has a mounting groove, and a tool holder is mounted inside the clamping head. Several inserts are mounted on the tool holder, and several insert grooves adapted to the inserts are carved on the tool holder. The inserts are embedded in the insert grooves. A pair of insert blocks are fixed on the clamping head, and a pair of insert block grooves adapted to the insert blocks are carved on the mounting head. Multiple equally spaced locking blocks are carved on the tool holder, and multiple locking grooves adapted to the locking blocks are fixed inside the clamping head. Through its structural design, this utility model allows for adjustment of the cutter body length according to the specific machining dimensions required for the reverse end face, thereby improving the applicability of the milling cutter.

Description

Technical Field

[0001] This utility model belongs to the field of machining tool technology, specifically relating to a machining eccentric end mill. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, the cutting teeth sequentially and intermittently remove the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces. Among the milling processes, reverse end face machining is a relatively special feature in the machining industry, which requires the use of eccentric milling cutters.

[0003] Currently available eccentric milling cutters are generally of fixed dimensions, and the dimensions that the cutter body can machine cannot be adjusted. In actual machining, different milling cutters need to be changed according to the machining dimensions of the reverse end face, making it impossible for one milling cutter to be suitable for machining different dimensions.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a machining eccentric end mill.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a machining eccentric end mill that can solve the problem that the machining dimensions of existing eccentric end mills cannot be adjusted.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a machining eccentric end mill, comprising: a tool holder and a tool head assembly;

[0008] A blade is fixed to one end of the handle, and an installation head is fixed to the end of the blade away from the handle;

[0009] The cutter head device is mounted on the mounting head. The cutter head device includes a clamping head, which is mounted on the mounting head. The clamping head has a mounting groove. A cutter holder is installed inside the clamping head. Several blades are mounted on the cutter holder. A pair of insert blocks are fixed on the clamping head. A pair of insert block slots adapted to the insert blocks are cut on the mounting head. Multiple equally spaced locking blocks are cut on the cutter holder. Multiple locking slots adapted to the locking blocks are fixed inside the clamping head.

[0010] In one or more embodiments of this utility model, the tool bar is located at the eccentric edge of the tool holder, and the rotation of the tool holder drives the tool bar to rotate eccentrically.

[0011] In one or more embodiments of this utility model, the side wall of the blade holder and the eccentric direction of the blade bar relative to the shank are on the same horizontal plane. When the blade bar drives the clamping head to rotate, the clamping head synchronously drives the blade holder to rotate eccentrically. When the blade holder drives the blade to rotate for cutting, the starting surface of the blade cutting and the eccentric direction of the blade bar relative to the shank are on the same horizontal plane.

[0012] In one or more embodiments of this utility model, a plurality of blade grooves adapted to the blade are chiseled on the blade holder, and the blade is embedded in the blade grooves.

[0013] In one or more embodiments of this utility model, the inner wall of the blade groove and the blade are both drilled with matching second threaded holes, and a second bolt is installed in the second threaded hole. The blade is fixed on the blade holder by fastening the second bolt in the second threaded hole.

[0014] In one or more embodiments of this utility model, the inner wall of the insert slot and the insert block are both drilled with matching first threaded holes, and a first bolt is installed in the first threaded hole. The clamping head is fixed on the mounting head by fastening the first bolt in the first threaded hole.

[0015] In one or more embodiments of this utility model, a snap-fit ​​plate is fixed on the clamping head, and a snap-fit ​​groove adapted to the snap-fit ​​plate is chiseled on the clamping head. The snap-fit ​​plate is snapped into the snap-fit ​​groove, thereby enhancing the connection strength between the clamping head and the mounting head, so that the mounting head drives the clamping head to rotate.

[0016] In one or more embodiments of this utility model, a pair of upper top blocks are fixed on the mounting head. The upper top blocks are located on both sides of the snap-fit ​​groove. The upper top blocks are used to clamp the tool holder upward when the head is installed on the mounting head, so that the snap-fit ​​groove is snapped into the snap-fit ​​block, thereby fixing the tool holder.

[0017] In one or more embodiments of this utility model, a support plate is fixed on the clamping head, and the support plate provides support for the tool holder.

[0018] In one or more embodiments of this utility model, a blade tip protection groove is chiseled at the edge of the blade groove sidewall, and the blade tip is located in the blade tip protection groove. By the blade tip being located in the blade tip protection groove, the blade tip is provided with a certain degree of anti-slip and to prevent collisions.

[0019] Compared with the prior art, this utility model, through its related structural design, allows for adjustment of the cutter body length according to the specific machining dimensions required for the reverse end face, thereby improving the applicability of the milling cutter. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of a machining eccentric end mill according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the cutter head device in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the clamping head and mounting head in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the clamping head and the tool holder in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the clamping head in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the tool holder structure in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the mounting head in one embodiment of the present invention.

[0028] Explanation of key figure labels:

[0029] 1-Tool holder, 101-Tool shank, 102-Mounting head, 2-Tool tip device, 201-Clamping head, 202-Tool holder, 203-Insert blade, 204-Insertion block, 205-Insertion block slot, 206-Snap-fit ​​plate, 207-Snap-fit ​​groove, 208-First threaded hole, 209-First bolt, 210-Upper top block, 211-Mounting groove, 212-Support plate, 213-Snap-fit ​​block, 214-Snap-fit ​​groove, 215-Insert blade groove, 216-Second threaded hole, 217-Second bolt, 218-Tool tip protection groove. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0031] like Figures 1 to 7 As shown, a machining eccentric milling cutter according to one embodiment of the present invention includes: a tool holder 1 and a tool head device 2.

[0032] like Figure 1 As shown, a tool shank 101 is fixed to one end of the tool holder 1, and a mounting head 102 is fixed to the end of the tool shank 101 away from the tool holder 1. The tool holder 1 drives the mounting head 102 to rotate via the tool shank 101. The mounting head 102 is used to mount the tool head device 2. The tool shank 101 is located at the eccentric edge of the tool holder 1. The rotation of the tool holder 1 drives the tool shank 101 to rotate eccentrically, and the tool shank 101 drives the tool head device 2 to rotate eccentrically via the mounting head 102.

[0033] like Figures 2 to 7 As shown, the cutting head device 2 is mounted on the mounting head 102. The cutting head device 2 includes a clamping head 201, which is mounted on the mounting head 102. The clamping head 201 has a mounting groove 211. A tool holder 202 is installed inside the clamping head 201. The tool holder 202 is adjustable in the mounting groove 211, and its extension length can be adjusted according to the required machining size. Several cutting blades 203 are mounted on the tool holder 202. A pair of insert blocks 204 are fixed on the clamping head 201. A pair of insert block slots 205 adapted to the insert blocks 204 are cut on the mounting head 102. When the clamping head 201 is installed on the mounting head 102, the insert blocks 204 are inserted into the insert block slots 205 to complete the installation.

[0034] like Figures 2 to 7 As shown, the tool holder 202 has multiple equally spaced locking blocks 213. The clamping head 201 has multiple locking slots 214 that are adapted to the locking blocks 213. After the extension length of the tool holder 202 is adjusted, it is inserted into the locking blocks 213 through the locking slots 214 to fix the tool holder 202 and prevent the extension length from changing during processing.

[0035] like Figures 2 to 7As shown, the side wall of the tool holder 202 where the cutting insert 203 is mounted is on the same horizontal plane as the eccentric direction of the tool shank 101 relative to the tool shank 1. When the tool shank 101 drives the clamping head 201 to rotate, the clamping head 201 simultaneously drives the tool holder 202 to rotate eccentrically. When the tool holder 202 drives the cutting insert 203 to rotate for cutting, the starting surface of the cutting of the cutting insert 203 is on the same horizontal plane as the eccentric direction of the tool shank 101 relative to the tool shank 1. Several insert grooves 215 adapted to the cutting insert 203 are chiseled on the tool holder 202, and the cutting insert 203 is embedded in the insert grooves 215.

[0036] like Figures 2 to 7 As shown, the inner wall of the blade groove 215 and the blade 203 are both drilled with matching second threaded holes 216. A second bolt 217 is installed in the second threaded hole 216, and the blade 203 is fixed to the tool holder 202 by fastening the second bolt 217 in the second threaded hole 216. The inner wall of the insert groove 205 and the insert 204 are both drilled with matching first threaded holes 208. A first bolt 209 is installed in the first threaded hole 208, and the clamping head 201 is fixed to the mounting head 102 by fastening the first bolt 209 in the first threaded hole 208.

[0037] like Figures 2 to 7 As shown, a snap-fit ​​plate 206 is fixed on the clamping head 201, and a snap-fit ​​groove 207 adapted to the snap-fit ​​plate 206 is cut on the clamping head 201. The snap-fit ​​plate 206 is snapped into the snap-fit ​​groove 207, thereby enhancing the connection strength between the clamping head 201 and the mounting head 102, so that the mounting head 102 drives the clamping head 201 to rotate. A pair of upper push blocks 210 are fixed on the mounting head 102. The upper push blocks 210 are located on both sides of the snap-fit ​​groove 207. When the clamping head 201 is installed on the mounting head 102, the upper push blocks 210 push the tool holder 202 upward, so that the snap-fit ​​groove 214 is snapped into the snap-fit ​​block 213, thereby fixing the tool holder 202.

[0038] like Figures 2 to 7 As shown, a support plate 212 is fixed on the clamping head 201, and the support plate 212 provides support for the tool holder 202. Tool tip protection grooves 218 are chiseled along the sidewall edge of the blade groove 215. The sharp corner of the blade 203 is located in the tool tip protection groove 218. By placing the sharp corner of the blade 203 in the tool tip protection groove 218, a certain degree of anti-slip is provided to the sharp corner of the blade 203, preventing impact.

[0039] Working principle: When using this eccentric milling cutter, the tool holder 1 is connected to the machining device. The machining device drives the tool holder 1 to rotate. The tool holder 1 drives the clamping head 201 to rotate eccentrically through the tool bar 101 and the mounting head 102. The clamping head 201 drives the tool holder 202 to rotate, so that the cutting tool 203 can perform cutting.

[0040] When the machining dimensions of the reverse end face need to be adjusted, use a wrench to unscrew a pair of first bolts 209 from the first threaded hole 208, then pull the clamping head 201 out of the mounting head 102. After the clamping head 201 is pulled upward, the upper top block 210 no longer pushes against the tool holder 202. At this time, the tool holder 202 can be moved towards the mounting head 102 to pull the slot 214 out of the slot block 213. Then move the tool holder 202 to adjust the length of the tool holder 202 extension. After the adjustment is completed, move the tool holder 202 again to insert the slot 214 into the slot block 213 after the position has been adjusted.

[0041] Next, install the clamping head 201 onto the mounting head 102. During installation, align the insert block 204 with the insert block slot 205 and insert it. At the same time, snap the snap plate 206 into the snap slot 207. Simultaneously, the upper push block 210 pushes the tool holder 202 upward, so that the snap slot 214 is tightly snapped into the snap block 213, thereby fixing the tool holder 202. Then, tighten the first bolt 209 into the first threaded hole 208. In addition, install the blade 203 into the blade slot 215 where the blade 203 is not installed, and tighten it into the second threaded hole 216 with the second bolt 217, thereby fixing the blade 203 onto the tool holder 202. Then, it can be used for machining.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A machine tool eccentric milling cutter characterized by, include: A knife handle, one end of which is fixed with a knife shank, and the end of the knife shank away from the knife handle is fixed with a mounting head; A cutting head device is mounted on an mounting head. The cutting head device includes a clamping head, which is mounted on the mounting head. The clamping head has a mounting groove. A cutting head is installed inside the clamping head. Several cutting blades are mounted on the cutting head. A pair of insert blocks are fixed on the clamping head. A pair of insert block slots adapted to the insert blocks are carved on the mounting head. Multiple equally spaced locking blocks are carved on the cutting head. Multiple locking slots adapted to the locking blocks are fixed inside the clamping head.

2. The machining eccentric end mill according to claim 1, characterized in that, The tool holder is located at the eccentric edge of the tool shank.

3. The machining eccentric end mill according to claim 2, characterized in that, The side wall of the tool holder where the blade is mounted is on the same horizontal plane as the eccentric direction of the tool shank relative to the tool handle.

4. The machining eccentric end mill according to claim 1, characterized in that, The tool holder has several blade grooves that are adapted to the blades, and the blades are embedded in the blade grooves.

5. A machining eccentric end mill according to claim 4, characterized in that, Both the inner wall of the blade groove and the blade are drilled with matching second threaded holes, and a second bolt is installed in the second threaded hole.

6. A machining eccentric end mill according to claim 1, characterized in that, Both the inner wall of the insertion slot and the insertion block are drilled with matching first threaded holes, and a first bolt is installed in the first threaded hole.

7. A machining eccentric end mill according to claim 1, characterized in that, A snap-fit ​​plate is fixed to the clamping head, and a snap-fit ​​groove adapted to the snap-fit ​​plate is cut into the clamping head.

8. A machining eccentric end mill according to claim 1, characterized in that, A pair of upper blocks are fixed on the mounting head, and the upper blocks are located on both sides of the snap-fit ​​groove.

9. A machining eccentric end mill according to claim 1, characterized in that, A support plate is fixed to the clamping head.

10. A machining eccentric end mill according to claim 1, characterized in that, Each blade groove has a blade tip protection groove carved along its sidewall edge, and the blade tip is located within the blade tip protection groove.

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