An outer keyway processing tool

Abstract

The utility model relates to the technical field of external keyway processing, specifically is a kind of external keyway processing frock, including base, the middle part of base is provided with support mechanism, and clamping mechanism is provided on base;Support mechanism includes first connecting frame, and the side of first connecting frame is provided with first fixed bolt, and first screw is threadedly connected on first connecting frame, and first adjusting wheel is fixedly connected to the one end of first screw, and first connecting seat is rotatably connected to the one end of first screw away from first adjusting wheel, and first connecting seat is provided with first idler. Advantageous effects lie in: the external keyway processing frock, in the process of processing slender shaft, when processing to the middle part of slender shaft, avoid bending deformation under the action of the cutting force given by the gravity of slender shaft and milling cutter downwards, so as to avoid the distortion of external keyway along the axial direction, ensure the precision of external keyway;At the same time, it is convenient to process different external keyways on different shaft parts, improve practicality.

Description

Technical Field

[0001] This utility model relates to the field of external keyway processing technology, and in particular to an external keyway processing tooling. Background Technology

[0002] An external keyway is a groove-shaped structure machined on the outer surface of shaft-like parts. It is mainly used to mate with keys such as flat keys and semi-circular keys to achieve connection and power transmission between parts. Through the mating of keys with external keyways and hub keyways, the torque of the shaft is transmitted to gears, pulleys, and other parts, while simultaneously limiting the radial movement of the parts. External keyways are machined on components that need to transmit power, such as motor shafts, gearbox shafts, and couplings. The machining of external keyways mainly involves processes such as milling and wire cutting. The machining accuracy of the external keyway directly affects the transmission stability.

[0003] The core processing flow mainly consists of: positioning and clamping: fixing the shaft parts on the machine's worktable; machining and grooving: starting the machine to machine the shaft parts fixed on the worktable; and grinding and finishing: after machining, using a file or grinding wheel to lightly finish the rounded corners at both ends of the groove, removing burrs to avoid scratching the "key" or hub during assembly. Machining fixtures are required when fixing the shaft parts on the machine's worktable.

[0004] The tooling disclosed in Chinese patent CN207344213U for machining axial keyways on external diameters allows for single-clamping of long, heavy parts requiring annular keyways, minimizing errors. Subsequent dynamic balancing tests are performed, ensuring a passing result on the first attempt. This guarantees machining quality and improves efficiency. The machining process also significantly reduces the labor intensity of manual operations.

[0005] However, compared with existing technologies and comparative solutions, it can be seen that the tooling used for machining axial keyways on external diameters still has the following problems in actual use:

[0006] This fixture differs from existing fixtures that clamp and fix both ends of shaft-type parts. During the machining of slender shafts, when the slender shaft is machined to the middle, it will bend and deform downwards under its own weight and the cutting force given by the milling cutter, resulting in axial twisting of the external keyway and affecting the accuracy of the external keyway. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a tooling for machining external keyways.

[0008] The purpose of this utility model is achieved through the following technical solution: a tooling for machining external keyways, including a base, a support mechanism in the middle of the base, and a clamping mechanism on the base;

[0009] The support mechanism includes a first connecting frame, a first fixing bolt on one side of the first connecting frame, a first screw threaded onto the first connecting frame, a first adjusting wheel fixedly connected to one end of the first screw, a first connecting seat rotatably connected to the end of the first screw away from the first adjusting wheel, a first roller on the first connecting seat, a first sliding rod fixedly connected to the bottom of the first connecting seat, and a first limiting block fixedly connected to the end of the first sliding rod away from the first connecting seat.

[0010] The clamping mechanism includes a V-shaped seat, an adjustment component on the V-shaped seat, and a fixing component on one side of the V-shaped seat.

[0011] Preferably, the base has a sliding groove with an opening, and the center of the base has a through groove. The first connecting bracket is slidably connected to the inside of the through groove by a first fixing bolt.

[0012] Preferably, a storage groove is provided on one side of the V-shaped seat, the adjustment component is set inside the storage groove, a second screw is fixedly connected inside the storage groove, a slider is fixedly connected to the bottom of the V-shaped seat, and connecting grooves are provided on both sides of the bottom of the V-shaped seat, with a second fixing bolt inside the connecting groove.

[0013] Preferably, the adjustment component includes a second connecting seat, a driving member is provided on the second connecting seat, a drive wheel is fixedly connected to the output end of the driving member, a support wheel is rotatably connected to the second connecting seat, and a second adjustment wheel is rotatably connected to the bottom of the second connecting seat.

[0014] Preferably, the fixing component includes a second connecting frame, a rotating shaft at the bottom of the second connecting frame, a limit bolt at the bottom of the rotating shaft, a third screw threadedly connected to the second connecting frame, a third adjusting wheel fixedly connected to one end of the third screw, a third connecting seat rotatably connected to the end of the third screw away from the third adjusting wheel, a second sliding rod fixedly connected to the third connecting seat, a second limit block fixedly connected to the end of the second sliding rod away from the third connecting seat, and a second roller provided on the third connecting seat.

[0015] Preferably, the slider is slidably connected to the base via a groove, and the slider is adapted to the opening.

[0016] Preferably, the second adjusting wheel is threaded onto the second screw.

[0017] Preferably, the second connecting frame is rotatably connected to one side of the V-shaped seat via a rotating shaft, the second slide rod is slidably connected to the second connecting frame, and the second roller corresponds to the position of the support wheel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This external keyway machining fixture, when machining a slender shaft, prevents the shaft from bending downwards under its own weight and the cutting force from the milling cutter when machining to the middle, thus preventing the external keyway from twisting along the axial direction and ensuring the accuracy of the external keyway; at the same time, it facilitates the machining of different external keyways on different types of shaft parts, improving its practicality.

[0020] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0021] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of the present invention in its working state;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0025] Figure 4 This is a schematic diagram of the support mechanism of this utility model;

[0026] Figure 5 This is a schematic diagram of the clamping mechanism of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the V-shaped seat of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the fixing component of this utility model.

[0030] In the diagram: 1. Base; 101. Slide groove; 102. Opening; 103. Through groove; 2. Support mechanism; 201. First connecting frame; 202. First fixing bolt; 203. First screw; 204. First adjusting wheel; 205. First connecting seat; 206. First roller; 207. First sliding rod; 208. First limiting block; 3. Clamping mechanism; 31. V-shaped seat; 311. Storage groove; 312. Second screw; 313. Slider; 314. Connecting rod 315. Connecting groove; 32. Second fixing bolt; 32. Adjusting assembly; 321. Second connecting seat; 322. Driving component; 323. Driving wheel; 324. Support wheel; 325. Second adjusting wheel; 33. Fixing assembly; 331. Second connecting frame; 332. Rotating shaft; 333. Limiting bolt; 334. Third screw; 335. Third adjusting wheel; 336. Third connecting seat; 337. Second sliding rod; 338. Second limiting block; 339. Second roller. Detailed Implementation

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0033] like Figure 1 and Figure 2 As shown, a tooling for machining external keyways includes a base 1, a support mechanism 2 is provided in the middle of the base 1, and a clamping mechanism 3 is provided on the base 1.

[0034] like Figure 3 As shown, a sliding groove 101 is provided on the base 1, an opening 102 is provided on the sliding groove 101, and a through groove 103 is provided in the middle of the base 1.

[0035] like Figure 2 and Figure 4As shown, the support mechanism 2 includes a first connecting frame 201, a first fixing bolt 202, a first screw 203, a first adjusting wheel 204, a first connecting seat 205, a first roller 206, a first sliding rod 207, and a first limiting block 208. The first connecting frame 201 is provided with a first fixing bolt 202 on one side. The first connecting frame 201 is slidably connected to the inside of the through groove 103 through the first fixing bolt 202. The first screw 203 is threadedly connected to the first connecting frame 201. One end of the first screw 203 is fixedly connected to the first adjusting wheel 204. The end of the first screw 203 away from the first adjusting wheel 204 is rotatably connected to the first connecting seat 205. The first roller 206 is provided on the first connecting seat 205. The bottom of the first connecting seat 205 is fixedly connected to the first sliding rod 207. The end of the first sliding rod 207 away from the first connecting seat 205 is fixedly connected to the first limiting block 208.

[0036] like Figure 5 As shown, the clamping mechanism 3 includes a V-shaped seat 31, an adjustment component 32, and a fixing component 33. The adjustment component 32 is provided on the V-shaped seat 31, and the fixing component 33 is provided on one side of the V-shaped seat 31.

[0037] like Figure 2 and Figure 6 As shown, a storage groove 311 is provided on one side of the V-shaped seat 31, and an adjustment component 32 is disposed inside the storage groove 311. A second screw 312 is fixedly connected inside the storage groove 311. A slider 313 is fixedly connected to the bottom of the V-shaped seat 31. The slider 313 is slidably connected to the base 1 through the slide groove 101. The slider 313 is adapted to the opening 102. Connecting grooves 314 are provided on both sides of the bottom of the V-shaped seat 31. A second fixing bolt 315 is disposed inside the connecting groove 314.

[0038] like Figure 5 and Figure 7 As shown, the adjustment assembly 32 includes a second connecting seat 321, a driving member 322, a driving wheel 323, a support wheel 324, and a second adjusting wheel 325. The driving member 322 is provided on the second connecting seat 321, and the driving wheel 323 is fixedly connected to the output end of the driving member 322. The support wheel 324 is rotatably connected to the second connecting seat 321, and the second adjusting wheel 325 is rotatably connected to the bottom of the second connecting seat 321. The second adjusting wheel 325 is threadedly connected to the second screw 312.

[0039] like Figure 5 and Figure 8As shown, the fixing component 33 includes a second connecting frame 331, with a rotating shaft 332 at the bottom of the second connecting frame 331. The second connecting frame 331 is rotatably connected to one side of the V-shaped seat 31 via the rotating shaft 332. A limit bolt 333 is provided at the bottom of the rotating shaft 332. A third screw 334 is threaded onto the second connecting frame 331. A third adjusting wheel 335 is fixedly connected to one end of the third screw 334. A third connecting seat 336 is rotatably connected to the end of the third screw 334 away from the third adjusting wheel 335. A second sliding rod 337 is fixedly connected to the third connecting seat 336. The second sliding rod 337 is slidably connected to the second connecting frame 331. A second limiting block 338 is fixedly connected to the end of the second sliding rod 337 away from the third connecting seat 336. A second roller 339 is provided on the third connecting seat 336. The second roller 339 corresponds to the position of the support wheel 324.

[0040] All electronic components mentioned in this article are electrically connected to an external main controller and 220V AC mains power. The main controller can be a conventional, known device such as a computer. The electronic components, along with their associated control systems, power supply modules, circuits, and piping, can be provided by the manufacturer. Furthermore, all electronic components and control modules involved in this invention are existing technologies, fully capable of being implemented by those skilled in the art, and require no further explanation. This invention does not involve any improvement to the structure or usage of the electronic components.

[0041] The work process is as follows:

[0042] S1. When in use, slide the clamping mechanism 3 on the base 1, adjust the distance between the two clamping mechanisms 3 according to the length of the shaft parts to be processed, and fix the position of the V-shaped seat 31 by the second fixing bolt 315.

[0043] S2. Place the shaft parts to be processed on the two clamping mechanisms 3, rotate the third adjusting wheel 335, the third adjusting wheel 335 drives the third connecting seat 336 to move through the third screw 334, the third connecting seat 336 drives the second roller 339 to move downward, and fix the two ends of the shaft parts to be processed.

[0044] S3. Adjust the position of the first connecting bracket 201 by sliding it to adjust the height of the bottom of the shaft part to be processed. Then tighten the first fixing bolt 202 to fix the position of the first connecting bracket 201. Next, drive the first screw 203 to rotate through the first adjusting wheel 204. The first screw 203 drives the first roller 206 to move through the first connecting seat 205, so that the first roller 206 is attached to the bottom of the middle part of the shaft part to support the middle part of the shaft part to be processed. During the processing of the slender shaft, when processing to the middle part of the slender shaft, avoid the slender shaft from bending and deforming downward under its own weight and the cutting force given by the milling cutter, thereby avoiding the external keyway from twisting along the axial direction and ensuring the accuracy of the external keyway.

[0045] S4. When it is necessary to process an annular external keyway, first rotate the third adjusting wheel 335. The third adjusting wheel 335 drives the third connecting seat 336 to move through the third screw 334. The third connecting seat 336 drives the second roller 339 to move upward, thereby releasing the fixation on both ends of the shaft part to be processed.

[0046] S5. Then rotate the second adjusting wheel 325. The second adjusting wheel 325 moves on the second screw 312, driving the second connecting seat 321 to move upward. The second connecting seat 321 supports the shaft parts through the driving wheel 323 and the support wheel 324.

[0047] S6. Next, rotate the third adjusting wheel 335. The third adjusting wheel 335 drives the third connecting seat 336 to move through the third screw 334. The third connecting seat 336 drives the second roller 339 to move downward to fix the two ends of the shaft parts to be processed.

[0048] S7. Start the drive unit 322. The drive unit 322 drives the shaft parts to rotate through the drive wheel 323, and then the annular external keyway on the shaft parts can be processed. This facilitates the processing of different external keyways on different shaft parts and improves practicality.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A tooling for machining external keyways, characterized in that: Includes a base (1), a support mechanism (2) is provided in the middle of the base (1), and a clamping mechanism (3) is provided on the base (1); The support mechanism (2) includes a first connecting frame (201), a first fixing bolt (202) is provided on one side of the first connecting frame (201), a first screw (203) is threadedly connected to the first connecting frame (201), a first adjusting wheel (204) is fixedly connected to one end of the first screw (203), a first connecting seat (205) is rotatably connected to the end of the first screw (203) away from the first adjusting wheel (204), a first roller (206) is provided on the first connecting seat (205), a first sliding rod (207) is fixedly connected to the bottom of the first connecting seat (205), and a first limiting block (208) is fixedly connected to the end of the first sliding rod (207) away from the first connecting seat (205). The clamping mechanism (3) includes a V-shaped seat (31), an adjustment component (32) is provided on the V-shaped seat (31), and a fixing component (33) is provided on one side of the V-shaped seat (31).

2. The tooling for machining external keyways according to claim 1, characterized in that: The base (1) has a sliding groove (101) and an opening (102) on the sliding groove (101). The base (1) has a through groove (103) in the middle. The first connecting bracket (201) is slidably connected to the inside of the through groove (103) by the first fixing bolt (202).

3. The tooling for machining external keyways according to claim 2, characterized in that: A storage groove (311) is provided on one side of the V-shaped seat (31), and the adjustment component (32) is located inside the storage groove (311). A second screw (312) is fixedly connected inside the storage groove (311). A slider (313) is fixedly connected to the bottom of the V-shaped seat (31). Connecting grooves (314) are provided on both sides of the bottom of the V-shaped seat (31), and a second fixing bolt (315) is provided inside the connecting groove (314).

4. The tooling for machining an external keyway according to claim 3, characterized in that: The adjustment component (32) includes a second connecting seat (321), on which a driving member (322) is provided. The output end of the driving member (322) is fixedly connected to a drive wheel (323). A support wheel (324) is rotatably connected to the second connecting seat (321), and a second adjustment wheel (325) is rotatably connected to the bottom of the second connecting seat (321).

5. The tooling for machining an external keyway according to claim 4, characterized in that: The fixing component (33) includes a second connecting frame (331), a rotating shaft (332) is provided at the bottom of the second connecting frame (331), a limit bolt (333) is provided at the bottom of the rotating shaft (332), a third screw (334) is threadedly connected to the second connecting frame (331), a third adjusting wheel (335) is fixedly connected to one end of the third screw (334), a third connecting seat (336) is rotatably connected to the end of the third screw (334) away from the third adjusting wheel (335), a second sliding rod (337) is fixedly connected to the third connecting seat (336), a second limiting block (338) is fixedly connected to the end of the second sliding rod (337) away from the third connecting seat (336), and a second roller (339) is provided on the third connecting seat (336).

6. The tooling for machining an external keyway according to claim 3, characterized in that: The slider (313) is slidably connected to the base (1) through the groove (101), and the slider (313) is adapted to the opening (102).

7. The tooling for machining an external keyway according to claim 4, characterized in that: The second adjusting wheel (325) is threaded onto the second screw (312).

8. The tooling for machining an external keyway according to claim 5, characterized in that: The second connecting frame (331) is rotatably connected to one side of the V-shaped seat (31) via the rotating shaft (332), the second slide rod (337) is slidably connected to the second connecting frame (331), and the second roller (339) corresponds to the position of the support wheel (324).

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