JP2017148899A - Shot blast device and shot blast method thereby - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shot blast device and a shot blast method by the device, or a wrapping device and a wrapping method by the device, by which shot blast processing or wrapping can be homogenously performed over a whole work-piece.SOLUTION: A shot blast device comprises: a stationery pedestal 1; a slider 23 which can be freely reciprocated on the stationery pedestal 1; a motor 21 for rotary motion which is loaded on and fixed to the slider 23; a turntable 22 which is rotated by the motor 21 for rotary motion; a motion conversion part 3 which is equipment for reciprocating the slider 23 and which converts rotary motion input into linear reciprocating-motion; and a motor 12 for reciprocating-motion which inputs rotary motion to the motion conversion part 3. When a rotation amount of the turntable 22, which is equivalent to a width of spraying fine grains onto a work-piece, is represented by d degree, the turntable 22 is so adjusted that the turntable is further rotated by only a rotation amount of d degree or less in addition to rotations of integer times while the slider 23 is reciprocated once.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a shot blasting apparatus and a shot blasting method for processing industrial parts.

  Parts having complicated shapes used in automobiles, such as pump rotors and other parts, are subjected to shot blasting for the purpose of deburring and plastic working on metal surfaces. In particular, the shot peening process is performed by spraying hard fine particles onto a workpiece (workpiece) at a high speed. In order to spray the hard fine particles uniformly over the entire work, it is necessary to rotate or slide the work with respect to a nozzle (also referred to as an ejection portion) that ejects the hard fine particles.

  In addition, there is a process called lapping that mirror-finishes the surface, and soft fine powder is sprayed onto the workpiece. This also requires that the work be rotated or slid with respect to the nozzle in order to spray the soft and fine powder uniformly throughout the work.

  In Patent Document 1, in order to uniformly perform shot peening (one of shot blasting) on the workpiece, the workpiece (sintered body S) is rotated with respect to the nozzle (reference numeral 20 in the same document), or the reflecting rod 24 Describes a device for spraying hard fine particles by moving them closer or away (moving in the vertical direction) (FIG. 2 of the same document).

  Therefore, if the rotation and slide of the workpiece during such shot blasting are to be realized without human intervention, the slide requires a linear reciprocating motion. If it does so, the converter which converts the rotational motion of power sources, such as a motor, into a linear reciprocating motion will be needed. For example, Patent Document 2 describes a cam device that converts rotational motion of an input shaft (the same document 21) into a reciprocating motion in the axial direction of a second output shaft (the same document 71) (the same document). 1 to 4).

JP 2012-077348 A JP 2009-275728 A

  In the shot peening apparatus described in Patent Document 1, there is no description on how hard and fine powder particles are sprayed evenly over the entire workpiece. If the workpiece is moved by hand, such rotation and movement in the vertical direction have a problem that machining unevenness occurs unless the rotation or movement is performed by a skilled worker. In addition, there is a problem that it is impossible to prevent a difference in processing quality for each workpiece unless it depends on a skilled worker.

  If the workpiece is rotated by a motor or linearly reciprocated in the vertical direction, etc., using the cam device described in Patent Document 2, all the workpieces can be handled regardless of skilled workers. The same quality can be processed. However, there is a problem that shot blasting cannot be performed uniformly over the entire work unless the timing of the rotational movement and reciprocation of the work is adjusted.

  Therefore, an object of the present invention, that is, a technical problem to be solved, is to automatically rotate and reciprocate a workpiece to be machined and to perform shot blasting or lapping uniformly and uniformly over the entire workpiece. An object of the present invention is to provide a shot blasting apparatus and a shot blasting method thereof, or a wrapping apparatus and a wrapping method thereof that can be processed.

  Therefore, the invention of claim 1 is rotated by a fixed base, a slider that can reciprocate on the fixed base in the X-axis direction, a motor for rotary motion mounted and fixed on the slider, and the motor for rotary motion. A shot blasting device comprising a turntable, a device that reciprocates the slider, a motion conversion unit that converts rotational motion input into linear reciprocation, and a reciprocating motor that inputs rotational motion to the motion conversion unit. Then, when the rotation amount of the turntable corresponding to the spray width of the fine particles on the workpiece mounted on the shot blasting device is expressed as d degrees and an arbitrary natural number is expressed as n, the turn The table is adjusted to rotate by a rotation amount of d degrees or less in addition to n rotations or by a rotation amount of d degrees or less than n rotations. By the shot blasting apparatus, wherein, the above-mentioned problems are eliminated.

  According to a second aspect of the present invention, in the shot blasting apparatus according to the first aspect, the fixed base is provided with a track portion extending in the X-axis direction, and the slider is provided with a pair of track portions, The pair of track portions is configured to be combined with the track portion, the slider is reciprocally held on the fixed base, and the motion converting portion is rotated by a rotation input of the reciprocating motor, The reciprocating motor is fixed to the fixed base with the rotation shaft aligned with the reciprocating direction of the slider, and the reciprocating motor is fixed to the fixed base. An upstream bevel gear is provided on the rotating shaft of the motor for movement, a downstream bevel gear is provided on the shaft of the crank, and the rotational input of the reciprocating motor is before the meshing with the upstream bevel gear. It propagates downstream bevel gear rotates the crank, by which the shot blasting apparatus characterized by reciprocating the slider by axially supported by the link to the crank, the above-mentioned problems are eliminated.

  According to a third aspect of the present invention, in the shot blasting apparatus according to the first or second aspect, an upstream gear is mounted on the rotating shaft of the rotary motion motor, and a downstream gear is mounted on the rotating shaft of the turntable. The above-mentioned problem is solved by providing a shot blasting device in which the rotation table rotates the turntable via the upstream gear and the downstream gear as the rotational input of the rotary motion motor.

  According to a fourth aspect of the present invention, there is provided a fixed base, a slider that can reciprocate in the X-axis direction on the fixed base, a motor for rotational movement mounted on the slider, and a turntable that is rotated by the motor for rotational movement. And a method of performing shot blasting with a configuration that includes a motion conversion unit that reciprocates the slider and converts rotational motion input into linear reciprocation, and a reciprocating motor that inputs rotational motion to the motion conversion unit. The rotation amount of the turntable corresponding to the spray width of the fine particles on the work mounted on the turntable is expressed as d degrees, and when an arbitrary natural number is expressed as n, the slider moves while reciprocating once. The turntable should be adjusted to rotate by a rotation amount of d degrees or less in addition to n rotations or by a rotation amount of d degrees or less than n rotations. By the shot blasting method comprising, the above-mentioned problems are eliminated.

  According to the first aspect of the present invention, the rotary motion and the reciprocating motion can be applied to the work without manual intervention, so that the same quality shot blasting can be performed on all the works (lots). Also, every time the slider reciprocates back and forth, the position where the fine particles are sprayed is not adjacent to the location where the fine particles were sprayed before one reciprocation, so the shot is evenly and uniformly with respect to the workpiece. There is an effect that can be blasted.

  In the invention of claim 2, since the rotation shaft of the reciprocating motor is aligned with the moving direction of the slider, there is an effect that a compact shot blasting device can be obtained. Further, since the rotational speed of the crank can be adjusted by appropriately combining the number of teeth of the upstream bevel gear and the downstream bevel gear, the speed of the reciprocating motion of the slider can be adjusted through this adjustment. In the invention of claim 3, there is an effect that the rotation speed of the turntable can be adjusted by changing the combination of the upstream gear and the downstream gear.

  According to the fourth aspect of the present invention, the rotary motion and the reciprocating motion can be applied to the workpiece without any manual intervention, so that the same quality shot blasting can be performed on all the workpieces (lots). Also, every time the slider reciprocates back and forth, the position where the fine particles are sprayed is not adjacent to the location where the fine particles were sprayed before one reciprocation, so the shot is evenly and uniformly with respect to the workpiece. There is an effect that can be blasted.

1A is a first embodiment of a shot blasting apparatus according to the present invention, in which FIG. 1A is a diagram showing a state in which the slider of the shot blasting apparatus is moving forward, and FIG. The figure which shows a state, (C1)-(C4) is a figure which shows the state which the said slider moves back and forth by operation | movement of the motion conversion part of the same shot blasting apparatus, (D) is an example of the said motion conversion part. It is the figure shown from. FIG. 2 is a second embodiment of the shot blasting apparatus according to the present invention, in which (A) is a plan view of the shot blasting apparatus, (B) is a side view of the shot blasting apparatus, and (C) is a front view of the shot blasting apparatus. FIG. 4D is a side view of the shot blasting apparatus, in which the notation of a reciprocating motor is omitted in order to show an example of a motion converting unit. In the second embodiment of the shot blasting apparatus according to the present invention, the notation of a reciprocating motor is omitted in order to show an example of the motion conversion unit, and (A) is a state in which the slider has moved most backward. FIG. 5B is a diagram illustrating a state in which the slider has moved forward, and FIG. 5C is a diagram illustrating a state in which the slider has moved most forward. In the shot blasting apparatus of the present invention, it is a diagram showing a region in which fine particles are sprayed on the workpiece surface when it is not preferably adjusted, that is, when the turntable makes one revolution when the slider reciprocates once, (A) is a diagram showing a forward working zone, which is an area where the fine particles are sprayed while the slider at the end moves to the forefront, and (B) is the slider at the foremost end. It is a figure which shows the processing zone at the time of retreat which is an area | region where the said fine particle was sprayed during moving to. In the shot blasting apparatus according to the present invention, finely adjusted particles are formed on the workpiece surface in a state that is preferably adjusted, that is, when the turntable rotates a lot by the sprayed area when the slider makes one reciprocation. It is a figure which shows the area | region sprayed, Comprising: (A) is a figure which shows the work zone at the time of advance, (B) is a figure which shows the work zone at the time of retreat. In the shot blasting apparatus according to the present invention, finely adjusted particles are formed on the workpiece surface in a state that is preferably adjusted, that is, when the turntable rotates a lot by the sprayed area when the slider makes one reciprocation. It is a figure which shows the sprayed area | region, Comprising: (A) is a figure which shows a processing zone when a slider reciprocates twice, (B) It is a figure which shows a processing zone when a slider reciprocates three times. In the shot blasting apparatus according to the present invention, finely adjusted particles are formed on the workpiece surface in a preferably adjusted state, that is, when the turntable rotates many times by the sprayed area when the slider makes one reciprocation. It is a figure which shows the sprayed area | region, Comprising: (A) is a figure which shows a processing zone when a slider reciprocates once, (B) is a figure which shows a processing zone when a slider reciprocates twice.

  Both shot blasting and lapping are performed by spraying fine powder evenly on the workpiece. Shot blasting and lapping including shot peening are performed by a substance mixed with fine particles such as high hardness particles, resin particles, or abrasives. Since the shot blasting apparatus and the shot blasting method of the present invention are an apparatus and a method for automatically rotating and reciprocating the workpiece in order to spray these fine particles uniformly, the wrapping device and the wrapping are simply changed by changing the fine particles. It can also be operated as a method. Therefore, although the present invention will be described below as a shot blasting apparatus and a shot blasting method, the present invention is also a wrapping apparatus and a wrapping method.

  A first embodiment of the shot blasting apparatus of the present invention will be described based on FIGS. 1 (A) and 1 (B). In the first embodiment, a reciprocating motor 12 is fixed to a fixed base 1. On the fixed base 1, the slide part 2 is held reciprocally. For the convenience of explanation, the moving direction of the slide part 2 is hereinafter referred to as the front-rear direction. That is, the slide part 2 is held on the fixed base 1 so as to be reciprocally movable in the front-rear direction. Further, this front-rear direction may be referred to as the X-axis direction.

  The slide part 2 is configured to include a slider 23, a rotary motion motor 21, and a turntable 22. That is, the rotary motion motor 21 is mounted and fixed on the slider 23 and reciprocates in the front-rear direction together with the slider 23. A turntable 22 is fixed to a shaft 211 (reference numeral not shown) of the motor 21 for rotary motion. The turntable 22 is rotated by the rotational input of the rotary motion motor 21. The motor shaft for rotational movement has the same direction as the X-axis direction.

  The workpiece 8 to be processed is temporarily fixed to the turntable 22 by magnetic force or screw tightening or other methods. Therefore, the workpiece 8 also rotates with the rotation of the turntable 22. The ejection part 4 is appropriately arranged at a position slightly away from the work 8. The direction of the ejection part 4 is appropriately adjusted so that the fine powder 9 for shot blasting is ejected toward the workpiece. The fine powder 9 is made of high-hardness particles for polishing and applying compressive residual stress. In order to increase the injection amount or to disperse the high-hardness particles uniformly, the fine powder 9 may be mixed with low-hardness particles. With the above configuration, the fine powder 9 is sprayed and shot blasting is performed while the workpiece 8 is rotated and reciprocated back and forth.

  FIGS. 1C1 to 1C4 are views illustrating a state in which the slider 23 moves back and forth by the operation of the motion conversion unit 3 of the shot blasting apparatus. 1 (C1) to 1 (C4) are opposite to FIGS. 1 (A) and 1 (B), the right side is the front and the left side is the rear. The motion converter 3 includes a crank 32 and a link 33. One end of the link 33 is pivotally supported by the slider 23, and the other end is pivotally supported by the crank 32. The crank 32 is rotated by the rotational input of the reciprocating motor 12. In FIGS. 1C1 to C4, the reciprocating motor 12 is not shown.

  FIG. 1C1 shows a state in which the slider 23 has moved most forward. When the crank 32 rotates 90 degrees clockwise, the link 33 pivotally supported by the crank 32 moves rearward, and the slider 23 pivotally supported by the link 33 is also pushed rearward. As a result, the slider 23 moves backward (C2). The crank 32 is further rotated by 90 degrees to push the link 33 rearward and the slider 23 moves rearward. This state is the state most moved rearward (C3). When the crank 32 further rotates 90 degrees, the link 33 moves forward. Along with this, the slider 23 moves forward (C4). The above is the reciprocating motion of the motion conversion unit 3 and the slide unit 2 including the slider 23. FIG. 1D is a diagram showing the motion conversion unit 3 from above. It can be seen that the crank 32 and the link 33 are configured not to interfere with each other.

  Next, the relationship between the rotational speed of the turntable 22 and the moving speed of the slider 23 will be described. First, in the shot blasting apparatus of the present invention, it is necessary to prevent the turntable 22 from rotating at an integral multiple of one rotation while the slider 23 reciprocates once. The reason for preventing such rotation amount will be described below.

[In case of unfavorable rotation amount]
FIGS. 4A and 4B are examples in which the turntable 22 rotates exactly once while the slider 23 reciprocates once. For convenience of explanation, the workpiece 8 is a cylindrical body having an axis on the extension of the rotation axis of the turntable 22. 4A and 4B are views in which the surface of the workpiece 8 is developed, where the front-rear direction of the workpiece is taken in the horizontal direction of the drawing and the circumferential direction of the workpiece is developed in the vertical direction of the drawing. The position on the circumference is shown as an angle on the right side of the drawing. That is, they are 0 degree, 90 degrees, 180 degrees, 270 degrees, and 360 degrees. At 0 degree and 360 degree, the same part is displayed overlappingly.

  In the example in which the shot blasting is started from the point in time when the turntable 22 and the slider 23 holding the workpiece 8 are moved most rearward, a belt-like region to which the shot blasting is applied is represented by a processing belt f1. The processing band f1 is 0 and starts from the left end (front). When the workpiece 8 gradually moves forward, the position on the workpiece 8 where the fine particles 9 are sprayed gradually moves (rear). At the same time, the position on the circumference moves from 0 to 360 degrees through 180 degrees as the work rotates. The machining band f1 represents this situation. When the workpiece 8 moves most forward, the fine particles 9 are sprayed to the rearmost portion of the workpiece 8. When the workpiece 8 moves most forward, the workpiece 8 is rotated by a half circumference (180 degrees). In the upper left part, the 0 degree area of the workpiece 8 is displayed again.

  In FIG. 4B, a processing band r1 is additionally displayed as an area where the shot blast processing is performed when the workpiece 8 moves backward. The machining band r1 continues from (back) (180 degrees) to (front) and reaches (front) (360 degrees, which is also 0 degrees). As described above, FIGS. 4A and 4B described the processing bands f1 and r1 in the case where the workpiece 8 makes one rotation while making one reciprocation back and forth. The feature of this processing band is that the end of r1 coincides with the start of f1. If it does so, even if it repeats rotation and reciprocation of the workpiece | work 8 after that and will continue a process, only the predetermined position on the workpiece | work 8 will be processable. With this, the entire surface of the workpiece 8 cannot be processed uniformly and uniformly.

  When the turntable 22 rotates exactly an integer number of times while the slider 23 makes one reciprocation, the start end of the work zone f when the workpiece 8 moves forward coincides with the end of the workpiece zone r when the workpiece 8 moves backward. Even if the reciprocating motion is repeated, the workpiece 8 cannot be processed uniformly and uniformly. For this reason, in the shot blasting apparatus of the present invention, the rotation speed of the turntable 22 and the movement of the slider 23 are prevented so that the turntable 22 does not rotate exactly an integral number of times while the slider 23 reciprocates once. It is important to adjust the speed. The processing band f1 and the processing band r1 are areas surrounded by a sine curve or a cosine curve.

[Preferable rotation amount]
FIG. 5 shows an example of a preferable rotation speed of the turntable 22 while the slider 23 reciprocates once. FIG. 5 (A) shows a state in which the turntable 22 rotates by a half rotation (180 degrees) + (half the spray width of the fine particles 9) while the slider 23 moves from the rearmost to the frontmost. Yes. Since the workpiece 8 moves forward along with the slider 23, the fine particles 9 are first sprayed on the front side. Accordingly, as shown in FIG. 5A, the processing band F1 at the time of advance starts from 0 degrees on the left side (front) of the drawing. Then, when the work 8 reaches the forefront, the turntable 22 is rotated by (180 degrees + half of the spray width of the fine particles 9), and the processing band F1 at the time of advance ends. Subsequently, the machining band during retraction starts from the same position. If the amount of rotation corresponding to the “spray width of fine particles 9” is d degrees, the above condition is that the turntable 22 is rotated by (180 degrees + d / 2) when the work 8 reaches the forefront. It can be expressed that the processing band F1 at the time of advance ends.

  FIG. 5 (B) shows a postscript display of the machining zone at the time of retreat following the advance of the workpiece 8 and the slider 23. The reverse machining zone R1 starts from the end position of F1 and ends at the front (front) position on the left side of the drawing. This end position is adjacent to the start position of F1. This is a point different from the relationship between f1 and r1 in the case of an unfavorable rotational speed. That is, the start position of f1 and the end position of r1 coincided. On the other hand, in the preferable relationship between the slider moving speed and the turntable rotation speed shown in FIG. 5, R1 ends adjacent to the start position of F1. In other words, the preferred rotational speed of the turntable 22 and the reciprocating speed of the slider 23 are such that when the slider 23 reciprocates once, the amount of rotation of the turntable 22 deviates by one rotation plus the width of the machining band, that is, d degrees. That is the relationship.

  FIG. 6A is a diagram in which the forward working zone F2 and the backward working zone R2 after two reciprocations are additionally written in the above preferred case. The forward working zone F2 begins adjacent to the starting end of F1. This is also the terminal position of the reverse working zone R1. Then, R2 started from the end of F2 ends adjacent to F2. FIG. 6B is a diagram in which the machining zone F3 for forward movement and the machining zone R3 for backward movement after three reciprocations are further added. F3 is the end position of R2, and the machining zone starts adjacent to the start end of F2. Then, R3 starting from the end of F3 ends adjacent to F3. That is, the relationship in which the turntable 22 is rotated at such a speed that the end position of the backward working band when the slider 23 makes the next reciprocating movement is adjacent to the start position of the forward working band that is the starting point of the one reciprocating movement. Is a preferred relationship. In this way, the slider 23 makes one reciprocation and the next one reciprocating process is performed adjacent to the one reciprocating start point. Processing irregularities that occur can be prevented and processing can be performed uniformly.

  The above are the conditions that do not cause overlapping processing and prevent processing leakage. However, there are also cases where it is desired to proceed with the machining bands partially overlapping. In such a case, if the rotation amount d is equivalent to the spray width of the fine particles 9, the turntable 22 is not less than the rotation amount d in addition to 360 degrees while the slider 23 reciprocates once. You may adjust so that it may rotate extra. Alternatively, the rotation amount of the turntable 22 may be adjusted so as to be reduced by 360 degrees or less than the rotation amount d while the slider 23 makes one reciprocation. By adjusting in this way, the processing band on the surface of the workpiece 8 is processed so that the adjacent processing bands partially overlap each other.

  FIG. 7 shows a case where the turntable 22 rotates by (2 rotations + spray width of fine particles 9) while the slider 23 makes one reciprocation, for example, by halving the moving speed of the slider 23. Yes. In this case, it can be said that the turntable 22 rotates by (one rotation + half of the spray width of the fine particles 9) when the slider 23 moves from the rearmost to the frontmost. FIG. 7A shows the machining zone G1 for forward movement and the machining zone L1 for backward movement when the slider 23 reciprocates once. The end of the backward machining zone L1 (left side (front) in the drawing) is adjacent to the start end of the forward machining zone G1. If the amount of rotation corresponding to the “spraying width of fine particles 9” is d degrees, the “two rotations + spraying width of fine particles 9” can also be referred to as “two rotations + d degrees”. Further, it can be generalized to “n rotation + d degrees” with respect to the natural number n.

  Further, in FIG. 7B, the forward machining zone G2 and the backward machining zone L2 are additionally displayed when the slider 23 reciprocates twice. The end of the backward machining zone L2 (left side (front) in the drawing) is adjacent to the start end of the forward machining zone G2. Thus, when the rotational speed of the turntable 22 is adjusted so that the end of one reciprocating machining band is adjacent to the start end of the forward machining band, the entire surface of the workpiece 8 is efficiently spread. Homogeneous shot blasting can be performed.

  Further, while the slider 23 reciprocates once, the turntable 22 may rotate by (2 rotations−the spraying width of the fine particles 9). In this case, it can be expressed by adjusting to “2 rotations-d degrees”. Further, it can be generalized as “n rotation-d degrees” with respect to the natural number n. The above is a condition in which the machining bands do not overlap and portions that are not to be processed do not occur. In this case, the turntable 22 is adjusted to rotate “2 rotations + d ′ degrees” while the slider 23 reciprocates once for a rotation amount d ′ smaller than the rotation amount d, or “2 rotations-d”. Can be adjusted to rotate 'degrees'. Further, with respect to the natural number n, the turntable 22 is adjusted to rotate “n rotation + d ′ degree” or adjusted to “n rotation−d ′ degree” while the slider 23 reciprocates once. It can be generalized.

  Next, a second embodiment of the shot blasting apparatus of the present invention will be described with reference to FIG. 2A is a plan view of the shot blasting apparatus, FIG. 2B is a side view of the shot blasting apparatus, FIG. 2C is a front view of the shot blasting apparatus, and FIG. 2D is the same shot. It is the figure which abbreviate | omitted and showed the motor 12 for reciprocating motion in order to show the structure of the motion conversion part 3 (crank 32 and link 33) in the side view of a blasting apparatus. In the figure, the slide part 2 located on the upper part of the fixed base 1 is composed of a slider 23, a rotary motion motor 21, and a turntable 22. The slider 23 mounts and fixes the rotary motion motor 21. The slider 23 is provided with an anti-rail groove 24a on the lower surface thereof, and is capable of reciprocating in the front-rear direction on the rail 11a provided on the upper surface of the fixed base 1 (FIG. 3C). And held on the fixed base 1. The moving direction of the slider 23 may be referred to as the X axis.

  The reciprocating motor 12 is fixed to the fixed base 1 with its rotating shaft 121 (not shown) parallel to the direction of the rail 11a (FIG. 1A). An upstream bevel gear 341 is provided on the rotating shaft 121 of the reciprocating motor 12, and the upstream bevel gear 341 meshes with the downstream bevel gear 342. The rotation input of the reciprocating motor 12 is converted into a direction substantially orthogonal to the rotation shaft 121 by the upstream bevel gear 341 and the downstream bevel gear 342. The rotation input converted in the substantially orthogonal direction becomes the input of the motion conversion unit 3 (the crank 32 and the link 33), and the motion conversion unit 3 reciprocates the slider 23.

  The motion conversion unit 3 includes a crank 32 and a link 33. The crank 32 is rotated by the rotation input of the downstream bevel gear 342. One end of the link 33 is pivotally supported by the crank 32, and the other end is pivotally supported by the slider 23. As the crank 32 rotates and the portion that pivotally supports the link 33 rotates, the link 33 reciprocates back and forth while swinging. Then, the slider 23 supporting the link 33 reciprocates by the reciprocating motion of the link 33. The configuration in which the motion conversion unit 3 converts the rotary motion into the reciprocating motion and the slider 23 reciprocates has been described above. This operation will be described later with reference to FIG.

  An upstream gear 212 is provided on a rotating shaft 211 (reference numeral not shown) of the motor 21 for rotary motion. A rotating shaft 222 a of the downstream gear 222 that meshes with the upstream gear 212 is rotatably held by bearings 221 a and 221 b fixed to the slider 23. A turntable 22 is provided at the tip of the rotating shaft 222a. When the rotary motion motor 21 rotates, the turntable 22 rotates via the upstream gear 212, the downstream gear 222, and the rotating shaft 222a. The upstream gear 212, the downstream gear 222, and the bearings 221a and 221b are housed in the gear box 223.

  3A to 3C are views showing a state in which the slider 23 reciprocates back and forth by the operation of the motion conversion unit 3 of the shot blasting apparatus. The right side of the drawing is the front side of the apparatus and the left side is the rear side of the apparatus. The motion converter 3 includes a crank 32 and a link 33. One end of the link 33 is pivotally supported by the slider 23, and the other end is pivotally supported by the crank 32. The crank 32 is rotated by the rotational input of the reciprocating motor 12. 3A to 3C, the reciprocating motor 12 is not shown.

  FIG. 3A shows a state in which the slider 23 has moved most backward. When the crank 32 rotates 90 degrees clockwise, the link 33 pivotally supported by the crank 32 moves forward, and the slider 23 pivotally supported by the link 33 is also pulled forward. As a result, the slider 23 moves forward (FIG. 3B). When the crank 32 further rotates 90 degrees, the link 33 is pulled forward, and the slider 23 moves further forward. FIG. 3C shows a state in which this state has advanced most forward. When the crank 32 further rotates 90 degrees, the link 33 moves backward. Along with this, the slider 23 moves backward. The above is the reciprocating motion of the slider 23 according to the shot blasting apparatus. The reciprocating motion is shown in FIG.

  The workpiece 8 to be processed is fixed to the turntable 22. In addition to fixing with a magnet, the fixing method may be fixed with a fastener such as a bolt. Then, the front of the shot blasting device, that is, the direction in which the workpiece 8 is fixed is arranged toward the ejection part 4 of the fine particles 9. Then, in a state where the fine particles 9 are sprayed in a predetermined direction and in a predetermined width at the ejection part 4, the workpiece 8 is reciprocated back and forth while being shot blasted. . Such movement of the workpiece 8 is based on the rotation of the reciprocating motor 12 and the rotating motor 21 as described above.

  When processing with the same shot blasting apparatus, the relationship between the rotational speed of the turntable 22 and the reciprocating speed of the slider 23 is important when performing uniform and uniform shot blasting. If the turntable 22 rotates exactly an integral multiple of one revolution while the slider 23 makes one reciprocation, the starting point of the machining band f at the forefront of the workpiece 8 will always coincide, so that the same area on the surface of the workpiece 8 Can only be processed. This is the description based on FIGS. 4A and 4B.

  In order to perform shot blasting uniformly on the workpiece 8 with the same shot blasting apparatus, the turntable 22 is added to an integral multiple of one rotation while the slider 23 is reciprocated once, and the spray width of the fine particles 9 It is necessary to adjust so that it rotates by an extra amount. For example, if the spray width of the fine particles 9 is 5 degrees as the rotation angle, the turntable 22 is 365 degrees or 360 × n + 5 degrees (n is a natural number) while the slider 23 reciprocates once. Is only rotating. In this way, the starting end of the machining band F at the forefront of the workpiece 8 is always set adjacent to the starting end of the machining band F before one reciprocation.

  Alternatively, while the slider 23 reciprocates once, it is necessary to adjust so that the turntable 22 rotates by a rotation angle that is insufficient by the spray width of the fine particles 9 to be an integral multiple of one rotation. For example, if the spray width of the fine particles 9 is 5 degrees as a rotation angle, the turntable 22 is 355 degrees or 360 × n−5 degrees (n is a value) while the slider 23 reciprocates once. It means that it rotates by a natural number). In this way, the starting end of the machining band F at the forefront of the workpiece 8 is always set adjacent to the starting end of the machining band F before one reciprocation.

  In the same shot blasting device, the speed of the reciprocating motion of the slider 23 in the front-rear direction can be adjusted by the combination of the upstream bevel gear 341 and the downstream bevel gear 342 in addition to the rotational speed of the reciprocating motion motor 12. For example, if the upstream bevel gear 341 has 15 teeth and the downstream bevel gear 342 has 30 teeth, the reciprocating speed of the slider 23 can be reduced by half. Then, the turntable 22 rotates twice while the slider 23 reciprocates once.

  In the shot blasting apparatus, the rotational speed of the turntable 22 can be adjusted by the combination of the upstream gear 212 and the downstream gear 222 in addition to the rotational speed of the rotary motion motor 21. For example, if the upstream gear 212 has 56 teeth and the downstream gear 222 has 55 teeth, the downstream gear 222 and the turntable 22 rotate by 1 rotation +1/55 while the rotary motion motor 21 rotates once. If the angle corresponding to 1/55 rotation, that is, 6.55≈360 / 55 degrees, corresponds to the spray width of the fine particles 9, this is a combination in which the upstream gear 212 has 56 teeth and the downstream gear 222 has 55 teeth. Thus, the surface of the workpiece 8 can be uniformly and evenly shot blasted.

  Alternatively, if the upstream gear 212 has 55 teeth and the downstream gear 222 has 56 teeth, the downstream gear 222 and the turntable 22 rotate 1/56 times while the rotary motion motor 21 rotates once. If the angle corresponding to 1/56 rotation, that is, 6.43≈360 / 56 degrees, corresponds to the spray width of the fine particles 9, this is a combination in which the upstream gear 212 has 55 teeth and the downstream gear 222 has 56 teeth. Thus, the surface of the workpiece 8 can be uniformly and evenly shot blasted.

  As described above, according to the second embodiment of the shot blasting apparatus of the present invention, the upstream bevel gear 341 and the downstream bevel gear 342 are adjusted in addition to the adjustment of the rotational speeds of the reciprocating motor 12 and the rotary motion motor 21. By the combination or the combination of the upstream gear 212 and the downstream gear 222, there is an effect that the rotation amount of the turntable 22 can be adjusted while the slider 23 reciprocates once. Due to this effect, by adjusting the amount of rotation of the turntable 22 according to the spray width of the fine particles 9, the end position of the reverse working zone, that is, the starting end position of the next forward working zone is reciprocated once. There is an effect that it can be arranged adjacent to the previous forward working zone.

  Further, if the reciprocating motor 12 and the rotary motor 21 are composed of the same type of motor, and the position adjustment of the machining band is performed by a combination of gears, the adjustment can be simplified, and the maintenance of the motor is also maintained. This has the effect of increasing efficiency. Further, if the motor 12 for reciprocating motion and the motor 21 for rotary motion are combined with one motor and adjusted by a combination of gears as appropriate, an effect of reducing the apparatus cost also occurs.

DESCRIPTION OF SYMBOLS 1 ... Fixed base, 11 ... Track part, 11a ... Rail, 12 ... Motor for reciprocating motion,
121 ... Rotating shaft, 2 ... Slide part, 21 ... Motor for rotary motion, 211 ... Rotating shaft,
212 ... Upper gear, 22 ... Turntable, 221a, 221b ... Bearing,
222 ... downstream gear, 222a ... rotating shaft, 223 ... gear box, 23 ... slider,
24 ... Pair-to-track part, 24 a ... Pair to rail groove, 3 ... Motion conversion part, 32 ... Crank,
33 ... Link, 341 ... Upstream bevel gear, 342 ... Downstream bevel gear, 4 ... Ejection part, 8 ... Workpiece,
9 ... Fine powder, f ... Processing band when the slider advances when not preferred,
r ... Machining zone when the slider is retracted when not preferred,
F ... Machining band when the slider advances when preferred,
R: Processing zone when the slider is retracted when preferred.

Claims (4)

  A fixed base, a slider that can reciprocate on the fixed base in the X-axis direction, a rotary motion motor that is placed and fixed on the slider, a turntable that is rotated by the rotary motion motor, and a reciprocating motion of the slider A shot blasting device having a motion converting unit that converts rotational motion input into linear reciprocating motion, and a reciprocating motor that inputs rotational motion to the motion converting unit, and mounted on the shot blasting device When the turntable rotation amount corresponding to the width of spraying fine particles on the workpiece is expressed as d degrees, and when an arbitrary natural number is expressed as n, the turntable rotates in addition to n rotations in d degrees during one reciprocation of the slider. A shot brass characterized in that it is adjusted to rotate by the following amount of rotation or to rotate by an amount of rotation of d degrees or less than n rotations. Apparatus. The shot blasting apparatus according to claim 1,
The fixed base is provided with a track portion extending in the X-axis direction, the slider is provided with a pair of track portions, the pair of track portions is combined with the track portion, and the slider is mounted on the fixed base. It is held so that it can reciprocate freely.
The motion conversion unit includes a crank that is rotated by a rotational input of the reciprocating motor, and a link that is pivotally supported by each of the crank and the slider.
The reciprocating motor is fixed to the fixed base with its rotational axis aligned with the reciprocating direction of the slider,
The rotary shaft of the reciprocating motor is provided with an upstream bevel gear, the crank shaft is provided with a downstream bevel gear, and the rotational input of the reciprocating motor is input to the upstream bevel gear with the downstream bevel gear. A shot blasting apparatus characterized in that the crank is rotated by propagating to a gear, and the slider is reciprocated by the link pivotally supported by the crank. In the shot blasting device according to claim 1 or 2,
An upstream gear is mounted on the rotary shaft of the rotary motion motor, a downstream gear is mounted on the rotary shaft of the turntable, and the rotational input of the rotary motion motor is transmitted through the upstream gear and the downstream gear. A shot blasting device characterized by rotating a table. A fixed base, a slider that can reciprocate on the fixed base in the X-axis direction, a rotary motion motor that is placed and fixed on the slider, a turntable that is rotated by the rotary motion motor, and a reciprocating motion of the slider A method of performing shot blasting with a structure having a motion conversion unit that converts rotational motion input into linear reciprocating motion, and a reciprocating motor that inputs rotational motion to the motion conversion unit, the turn table When the amount of rotation of the turntable corresponding to the width of spraying fine particles onto the workpiece mounted on is expressed as d degrees and an arbitrary natural number is expressed as n, the turntable is added to n rotations while the slider is reciprocated once. It is adjusted to rotate by a rotation amount of d degrees or less, or to rotate by a rotation amount of d degrees or less than n rotations. Toburasuto way.

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