JPS61284369A - Grinding device for internal surface of hole - Google Patents

Abstract

PURPOSE:To provide automated and mechanized machining of the internal surfaces of holes with different diameters by displacing the axis of a drive shaft from the axis of a bearing device, adjusting the location of a tool with respect to the inside surface of hole and by rotating the drive shaft with a cylinder. CONSTITUTION:A moving table 14 is moved to the right and left for locational adjustment of a grinding tool 48 with respect to the hole of a product, and a supporting table 20 is moved to move a cylinder to be guided 31 along a slope relative to a guide 37. Thereby the guide 37 is displaced vertically, and the axis 40 of a rotary shaft is displaced from the axis 30 of a fore and aft shaft due to bearings 26A, 26B for location adjustment of the grinding tool 48 with respect to the bore. In this condition the drive shaft 38 is rotated with cylinders 29A, 29B so that the drive shaft 38 revolving round its own axis will orbit with the axis 30 of supporting shaft as the center. This enables grinding of the whole bore surface to make it possible to mechanize and automate bore grinding with different diameters.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a hole formed in, for example, a cast iron or cast steel product, and is applied to a hole that is adopted for grinding and finishing the large black scale of the hole. This invention relates to an internal grinding device.

2. Prior Art Conventionally, this type of grinding has been carried out manually using an air ball with a wire or the like attached to its tip.

Problems to be Solved by the Invention According to the conventional method as described above, efficient grinding cannot be carried out because it is manual work, and it is difficult to perform grinding in dusty areas with poor hygiene and environment. As it becomes, vibration,
Various problems arise, such as loud noise, fatigue, and inconsistent product quality and accuracy.

Means for Solving the Problems In order to solve the above-mentioned problems, the hole internal grinding device of the present invention is provided with a movable table movable in the front and back as well as left and right directions on the side of the product support device. A movable support is provided, and a cylinder ' that is rotatable around a common longitudinal axis via a bearing device is provided at both the front and rear ends of this support, respectively, and a guided cylinder is placed between these cylinders. A guide member that is relatively slidable is provided in the guided cylinder body, a drive shaft is provided within the guide member so that it can only rotate freely, and the direction of the rotation axis of the drive shaft is A receiving plate is provided on the movable base side to prevent movement of the drive shaft, and a grinding tool is attached to the front end of the drive shaft.

According to the structure of the present invention, the movable table is moved left and right to align the grinding tool with respect to the hole in the product, and then the support table is moved.

The guided cylinder can be moved along the inclined surface relative to the guide member, thereby displacing the guide member up and down, displacing the drive shaft axis relative to the support axis by the bearing device, and moving the inner surface of the hole. The position of the grinding tool can be adjusted relative to the By rotating the cylindrical body and the drive shaft in this state, the rotating drive shaft will revolve around the support axis.
Therefore, the entire circumference of the inner surface of the hole can be ground.

Example An embodiment of the present invention will be described below based on the drawings.

In Figures 1 to 5, (1) is the base, and its upper surface -
A product support device (2) is arranged near the side. This product support device (2) is composed of a base (3), a pedestal (5) attached to this base (3), etc.
) to support the product (6). The product support device (
2) On the other side of the base (1) is this product support device (
A truck (7) is provided which can move toward and away from 2).

That is, a cart (7) is placed on a rail (8) laid on a base (1) via wheels (9), and a nut body αO is attached to the cart (7), and this nut body αQ The screw shaft surface that is screwed into the base (1
) side, and the output shaft of the motor u side mounted on the base (1) is interlocked and connected to the screw shaft 01). A movable base α fathom is provided on the truck (7) and is movable in a lateral direction perpendicular to the moving direction of the truck (7). That is, a pair of front and rear guide rods (to) are arranged on the truck (7), and the movable base α4 is supported and guided by these guide rods (to). In addition, a nut body (to) is attached to the movable table α, and a screw shaft αη that is screwed into this nut body Ql is rotatably supported on the trolley (7) side via a bearing (to), 7) The output shaft on the 11 side is interlocked and connected to the above-mentioned screw shaft 07 of the motor mounted above.

A support stand movable in the same direction as the trolley (7) is disposed inside the car 104. That is, a pair of left and right guide rods QI) are disposed within the movable base a4, and a support base is supported and guided by these guide rods 3υ.

Also, attach the nut body (A) to the support base (A), and
The screw shaft (C) that is screwed into this nut body (A) is connected to the bearing (
It is rotatably supported on the movable table α4 side via c). (to) is an operating handle that can be attached to and detached from the screw shaft track.

Bearing devices (26
A) (26B) are arranged, and these bearing devices (26A)
(26B) is the machine frame (27A) installed on the support platform.
(27B) and flanged cylindrical bodies (29A) (29B) arranged through the Kowara machine frame (27A) (27B) and the gate bearings (28A) (28B). ) (29B) is rotatable around the longitudinal axis (1). Said cylinder (29A) (29B)
The guided cylinder is fixed at an angle (θ) between the opposing flanges at an angle (θ) of 0υ. Further, an annular passive gear (to) is fixed to the cylinder body (29A) on the front end side. A drive gear (to) meshing with this passive gear (2) is operatively connected to a motor (b) mounted on a support base (a).

A guide member (to) that is relatively slidable via the sliding key (to) and m (to) is arranged in the guide tube C (9 circles).

A longitudinal drive shaft (2) is inserted into the guide member (2) so as to be freely rotatable around the rotation axis via a bearing (2). A disk body (B) is fixed in front of the front end bearing (28A) at the middle of the drive shaft (to), and a plurality of rollers held by this disk body (B) are used to move the movable It can freely come into contact with the inner surface of the receiving plate (44A) which is integrated with the front plate part of the cover member attached to the stand σ4.

In addition, a passive wheel body (C) is fixed to the rear end of the drive shaft branch, and a plurality of rollers held on the rear surface of this passive wheel body (C) are attached to the rear end of the drive shaft branch.
0 can freely come into contact with the receiving plate (44B) integrated with the rear plate part of the cover member (goods) from the inside. Therefore, between the drive shafts, it is possible to freely rotate around the rotation axis while being prevented from moving back and forth with respect to the movable table, and a grindstone (an example of a grinding tool) is attached to the front end via a fixture 07). )(c) is installed. The rotary drive device (6) interlocked with the drive shaft (to) is located on the movable base α4 side, that is, on the cover member (goods).
The Tanabata (to) attached to the , the driving wheel body ■ attached to the output shaft of this motor (7), the guide wheel body (to) held on the side of the cover member, and the Consisting of a belt (b) stretched across the wheel body (a) and the passive wheel body (ii),
Further, a tension ring (to) is hung at a suitable position on the belt, and a weight ring is attached to this tension ring (to).

Next, the operation of the above embodiment will be explained.

After placing the product (6) on the pedestal (5) of the product support device (2), the position of the grindstone (goods) relative to the inner surface (6a) of the hole of the product (6) is adjusted. That is, the motor α1 rotates the screw shaft (lη, and the movable table σ→ is moved to adjust the position in the lateral direction. Furthermore, the screw shaft (c) is rotated by the operation handle) to move the support table back and forth. . At this time, the drive shaft (to) and guide member (b)
This guide member (2) is positioned in the front-rear direction via the receiving plate (44AX44B) etc.
The guided cylinder body 8υ slides in the front and back direction, and since the sliding is at an angle, the drive shaft
In addition, the guide member (b) does not move in the axial direction, but moves up and down in Fig. 3, so that the rotation axis (7) is eccentrically held relative to the longitudinal axis (1), and the guide member (b) moves up and down. Adjust the position in the direction. At this time, the eccentricity (3) is performed so as to slightly wrap (e) as shown in FIG. Next, the cart (7) is moved forward with both motors (b) ω being started. The forward movement of this trolley (7) is
This is done by rotating the screw shaft (2) with the motor αj. At this time, as shown in Fig. 8, the grindstone (7) receives power from the one-rotation drive device to rotate around the rotation axis (T), and the power from the motor (7) )→Passive gear (To)→Cylinder (29AX29B)→Guided cylinder 6υ→Guide member (B)→Bearing (To), and these are rotated around the longitudinal axis (To) Therefore, revolution (Q) is performed around this longitudinal axis (to). Through this rotation (B) and revolution (C), the entire circumference of the inner surface (6a) can be ground. Grinding in the length direction can be performed by advancing.Also, during grinding, the above-mentioned lap (e) can be absorbed by the deflection of the drive shaft (to) as shown in Fig. Grinding can be done by pressing (pressing is a force, and after setting it is constant and does not change) pressing can be done by force.

When the hole in the product (6) is long, one side is ground and then the product (6) is turned over.

After performing the desired grinding, by moving the movable table α horizontally with the grindstone (G) pulled out.

The inner surface of the next parallel hole can be ground, making it more efficient.

Effects of the Invention According to the present invention having the above configuration, the movable base is moved left and right to align the grinding tool with respect to the hole of the product, and then the support base is moved to position the guided cylinder relative to the guide member. The guide member can be moved along an inclined surface, thereby displacing the guide member up and down, displacing the drive shaft axis with respect to the support axis of the bearing device, and adjusting the position of the grinding tool with respect to the inner surface of the hole. be able to. By rotationally driving the cylindrical body and the drive shaft in this state, the rotating drive shaft can be caused to revolve around the support axis, thereby making it possible to grind the entire circumference of the inner surface of the hole.

This makes it possible to mechanize and automate the internal grinding of holes of various diameters, and to solve all the various problems caused by manual work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, the first being a side view and the second being a side view.
The figure is a plan view, Fig. 3 is a partially cutaway side view of the main part, Fig. 4 is a partially cutaway rear view of the same part, Fig. 5 is an enlarged longitudinal sectional side view of the main part,
6 and 7 are side views for explaining the action, and FIG. 8 is a front view of the same. (2)...product support device, (5)...cradle, (6
)・-Product, (6a)...Inner surface, (7)...Dolly,
α station...Movable stand, (A)...Support stand, (26A) (
26B)・τ・Bearing device, (28A) (28B)...
・Bearing, (29A) (29B)...Cylinder, (to)・
・-Anteroposterior axis, c3℃...Covered cylinder, (to)
...Passive gear, (to)...Drive gear, ■...Motor, (to)...Sliding key, ■...Guide member, (
To)・Drive shaft, (To)...Bearing, (7)...Rotation axis center, (44A) (44B)...Brace plate, (Foundation)...
Grinding wheel (grinding tool), M...Rotary drive device, So...Tension wheel, (to)...Weight agent Yoshihiro MorimotoM4Figure 6Figure 1

Claims (1)

[Claims] 1. A movable stand movable in the front and back as well as left and right directions is provided on the side of the product support device, and a support stand that is movable back and forth is provided on this movable stand, and bearing devices are installed at both front and rear ends of the support stand, respectively. A cylindrical body rotatable around a common longitudinal axis is provided, a guided cylindrical body is disposed obliquely between these cylindrical bodies, and a guide member is relatively slidable within the guided cylindrical body. A drive shaft is provided within this guide member so that it can only rotate freely, a receiving plate is provided on the movable table side to prevent the drive shaft from moving in the direction of the rotation axis, and a grinding tool is attached to the front end of the drive shaft. A hole internal grinding device characterized by: