JP3685414B2 - Bolt polishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is an apparatus for polishing a bolt and removing rust before mounting. It can handle both headed and headless bolts, and is intended for relatively large bolts that can be lifted mainly with one hand.
[0002]
[Prior art]
Bolt grinders for the same purpose are commercially available. A bolt is rotatably placed on the top, a rotating brush provided on an axis parallel to the bolt is moved forward and backward in the axial direction, and the rotating brush rotates to rotate the bolt together. Manual work using a large toothbrush is still the mainstream due to the difficulty of having to mount the bolts one by one in a table and the fact that co-rotation is not always smooth.
[0003]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a bolt polishing apparatus that does not require a troublesome mounting operation and has good workability.
[0004]
[Means for Solving the Problems]
In the present invention, in order to solve the above-described problem, a pair of cylindrical stationary brushes 3a and 4a are pivotally supported in parallel and parallel to each other on the base 1, and a bolt B is placed between the two in the axial direction. The motor 6 can be rotated about the axis, and one end of the swing frame 17 is pivotally supported on the base 1 by the horizontal shaft 20 so as to be swingable in the vertical direction above the stationary brushes 3a and 4a. The pressing brush 22a is pivotally supported on the swinging frame 17 in parallel with the stationary brushes 3a and 4a, is rotated around the axis by the motor 6, and is lowered onto the bolt B placed between the pair of stationary brushes 3a and 4a. Thus, the swing frame 17 is provided with a handle 21 for manually swinging the swing frame 17, and the handle 21 is provided with a switch 24 for controlling the brush driving motor 6.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the bolt polishing apparatus, FIG. 2 is a side view of the bolt polishing apparatus, FIG. 3 is a plan view of the bolt polishing apparatus, and FIG. 4 is an explanatory view of a transmission mechanism of the bolt polishing apparatus.
[0006]
Center shafts 3 and 4 are supported by a pair of bearing plates 2 erected on the base 1 in parallel with each other and rotatably. Fixed brushes 3a and 4a are fixed to the central shafts 3 and 4, respectively. The stationary brushes 3a and 4a are hairs that are spirally implanted into a cylinder at an appropriate lead angle, and both have the same lead direction. A pulley 3b is fixed to one end of the central shaft 3, and pulleys 4b and 4c are fixed to both ends of the central shaft 4, respectively. A motor 6 is fixed at the lower part of the stand 5 provided on the base 1, and a gear box 7 is fixed at the upper part. A pulley 6a is fixed to the shaft end of the motor 6 and a pulley 8a is fixed to the input shaft 8 end of the gear box 7, and a belt 9 is hung between the pulleys 6a and 8a. Pulleys 10 a and 10 b are fixed to both ends of the output shaft 10 orthogonal to the input shaft 8 of the gear box 7. The rotary shaft 11 is pivotally supported by a bracket on the base 1 and is located below the pulley 10a, and the pulleys 11a and 11b are fixed thereto. A belt 12 is hung between the pulley 10a and the pulley 11a, and a belt 13 is hung between the pulley 11b and the pulley 4c. Therefore, the stationary brush 4a includes the motor 6, the pulley 6a, the belt 9, the pulley 8a, the shaft 8, the gear box 7, the shaft 10, the pulley 10a, the belt 12, the pulley 11a, the rotating shaft 11, the pulley 11b, the belt 13, The rotation is transmitted through the pulley 4c and the center shaft 4 in order. The bearing plate 2 is positioned below the middle portion of the center shafts 3 and 4 and is parallel to the transmission shaft 14 so as to be rotatably supported. Pulleys 14a and 14b are fixed to both ends thereof. ing. A belt 15 is hung between the pulley 14a and the pulley 4b, and a belt 16 is hung between the pulley 14b and the pulley 3b. Therefore, rotation is transmitted to the stationary brush 3a from the central shaft 4 through the pulley 4b, the belt 15, the pulley 14a, the transmission shaft 14, the pulley 14b, the belt 16, the pulley 3b, and the central shaft 3 in order. Thus, the stationary brushes 3a and 4a rotate in the same direction.
[0007]
The main body 18 of the swing frame 17 is U-shaped, and the base end side is pivotally supported by a horizontal shaft 20 on a bracket 19 on the top of the stand 5 and can swing freely in the vertical direction above the stationary brushes 3a and 4a. The swing frame 17 is provided with a handle 21 for manually swinging it up and down. A central shaft 22 is pivotally supported on the swing frame 17 in parallel with the central shaft 4. A pressing brush 22a and a pulley 22b are fixed to the central shaft 22. The pressing brush 22a faces the upper part between the stationary brushes 3a and 4a so that it can be lowered onto the bolt B placed between the pair of stationary brushes 3a and 4a. A belt 23 is hung between the pulley 22b and the pulley 10b. Accordingly, rotation is transmitted to the pressing brush 22a from the motor 6 through the pulley 6a, the belt 9, the pulley 8a, the shaft 8, the gear box 7, the shaft 10, the pulley 10b, the belt 23, the pulley 22b, and the rotating shaft 22 in order. It is done. A switch lever 24 for controlling the motor 6 is attached to the handle 21.
[0008]
A guide stand 25 is erected on the base 1 so as to be positioned below the handle 21. The guide stand 25 includes a pair of parallel guide plates 26 that movably hold the handle 21 therebetween, and a stopper 27 that contacts the handle 21 and restricts its bottom dead center. The stopper 27 extends between the guide plate 26 and a contact rod 27a in which both end portions are inserted in the vertical hole 26a in the vertical direction of the guide plate 26 so as to freely move up and down. A screw rod 27b and an adjustment nut 27c screwed into the screw rod 27b and rotatably held by the guide plate 26 are provided. By the forward / reverse rotation of the adjustment nut 27c, the screw rod 27b is moved up and down to determine the vertical position of the contact rod 27a. A limit switch LSW is attached to the handle 21. The limit switch LSW is interposed between the motor 6 and the power source in series with the contact of the switch lever 24. The contact is opened when the handle 21 is raised, and the handle 21 is in contact with the contact rod 27a. The contact is closed when contacting, and the motor 6 is started when the switch lever 24 is gripped in this state.
[0009]
The bolt pedestal 28 is for mounting and supporting the end portion of the bolt B to be polished, and the length of the bolt B can be adjusted to the side of the bearing plate 2 in accordance with the length of the bolt B. It is provided movably. The bolt cradle 28 includes a support plate 28a having a V-shaped receiving recess 28b for placing the bolt B between the stationary brushes 3a and 4a, and a central shaft 3 extending from the support plate 28a. 4 has a pair of support arms 28c penetrating the bearing plate 2 so as to be slidable in the axial direction.
[0010]
Prior to polishing the bolt B, the extension position of the bolt receiving base 28 is determined according to its length, and the height position of the stopper 27 is determined according to its diameter. When performing the polishing operation, the swing frame 17 is pulled up and the bolt B is disposed between the stationary brushes 3a and 4a. The outer end is placed on and supported by the bolt cradle 28 so that the bolt B does not fall down. The handle 21 is held down by pushing down the swing frame 17, the pressing brush 22 a is applied to the bolt B, and the switch lever 24 at hand is gripped while the handle 21 is brought into contact with the stopper 27. The limit switch LSW closes the contact and the motor 6 starts. Thus, polishing can be performed while applying an appropriate contact pressure to the bolt B. The two stationary brushes 3a and 4a are fed in the axial direction while rotating the bolt B. During this time, the bolts B are polished by the stationary brushes 3a and 4a and the pressing brush 22a. When the handle 21 is bounced up by receiving a reaction force due to the rotation of the brushes 3a, 4a, and 22a, the limit switch LSW opens the contact to stop the motor and prevent danger.
[0011]
【The invention's effect】
As described above, in the present invention, the pair of cylindrical stationary brushes 3a and 4a are pivotally supported in parallel and parallel to each other on the base 1, and the bolts B are mounted and received in the axial direction between them. And can be rotated around the axis, and one end side of the swing frame 17 is pivotally supported on the base 1 by the horizontal shaft 20 so as to be swingable in the vertical direction above the stationary brushes 3a and 4a. 22a is pivotally supported on the swinging frame 17 in parallel with the stationary brushes 3a and 4a, can be rotated around the axis by the motor 6, and lowered onto the bolt B placed between the pair of stationary brushes 3a and 4a. The swing frame 17 is provided with a handle 21 for manually swinging the swing frame 17, and a switch 24 for controlling the motor 6 is attached to the handle 21, so that troublesome bolt mounting work is required. And a bolt with good workability. It is possible to provide a polishing apparatus.
[Brief description of the drawings]
FIG. 1 is a front view of a bolt polishing apparatus.
FIG. 2 is a side view of the bolt polishing apparatus.
FIG. 3 is a plan view of a bolt polishing apparatus. FIG. 4 is an explanatory diagram of a transmission mechanism of the bolt polishing apparatus.
[Explanation of symbols]
1 Base 3a Fixed brush 4a Fixed brush 6 Motor 17 Oscillating frame 21 Handle 22a Pressing brush 24 Switch

Claims (4)

A pair of cylindrical stationary brushes that are supported horizontally and parallel to each other on the base so that the bolts can be received in the axial direction between them, and rotate around the axis in conjunction with the motor,
A bolt polisher provided with a cylindrical pressing brush which is provided so as to be able to move forward and backward on the base with respect to the bolt placed between the pair of stationary brushes and which rotates around the axis in conjunction with the motor to polish the bolt. In the device
The pressing brush is pivotally supported in parallel with the stationary brush on a vertically swinging frame that is pivotally supported at one end on the base above the stationary brush and between the pair of stationary brushes. It is provided so that it can be lowered onto the mounted bolt,
The swing frame has a handle for manually swinging the swing frame,
A bolt polishing apparatus characterized in that a switch for controlling the brush driving motor is provided in the vicinity of the grip position of the handle.   The bolt polishing apparatus according to claim 1, wherein a stopper is provided on the base so as to be able to adjust a vertical position of the stopper so as to contact the handle and determine a bottom dead center thereof. A pair of cylindrical stationary brushes that are supported horizontally and parallel to each other on the base so that the bolts can be received in the axial direction between them, and rotate around the axis in conjunction with the motor,
A bolt polisher provided with a cylindrical pressing brush which is provided so as to be able to move forward and backward on the base with respect to the bolt placed between the pair of stationary brushes and which rotates around the axis in conjunction with the motor to polish the bolt. In the device
The pressing brush is pivotally supported in parallel with the stationary brush on a vertically swinging frame that is pivotally supported at one end on the base above the stationary brush and between the pair of stationary brushes. It is provided so as to be able to descend with a predetermined contact pressure onto the mounted bolt,
A bolt base for mounting and supporting one end side of the bolt placed between the stationary brushes is provided on the side of one axial end side of the pair of stationary brushes so as to be movable in the axial direction of the stationary brush. Bolt polisher characterized by being made.   The bolt polishing apparatus according to claim 3, wherein the bolt pedestal is supported by a support arm that penetrates a bearing base that supports the stationary brush horizontally and movably in an axial direction.

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