JPH02109679A - Attachment for feeding work - Google Patents

Abstract

PURPOSE:To facilitate the adjusting work of an auxiliary weight by arranging the auxiliary weight which is freely detachable from a counter-weight via the escape hole pierced on a 1st cover and projecting toward the external part from the 1st cover inside at the fitting time to the same weight. CONSTITUTION:An attachment is fixed on the table of a grinder and the work W to be processed is held on the jig 12 of the table 10 side of the attachment. Moreover a 2nd cover 14 is opened, and the auxiliary weight in the number of pieces corresponding to the weight of the work W or the completely same work W is held by the jig 12 of a counter-weight 11 side via the escape hole 13a pierced on the 1st cover 13. Thus the weights of the counter weight 11 and table 10 are balanced. Thereafter, the attachment is operated in the state of the 2nd cover 14 being closed, the table 10 is reciprocated by the driving of a motor 5 and the work W on the table 10 is subjected to grinding by the grindstone of the grinder.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a workpiece feeding attachment, which is specifically attached to a processing machine such as a grinder, and which reciprocates the workpiece relative to processing means such as a grindstone of the processing machine. The present invention relates to a workpiece feeding attachment for processing a workpiece with the same processing means.

[Prior art] This type of device is known from the patent application filed in 1986 by the present applicant.
There is one described in No. 3-40326.

As shown in Figures 5 and 6, the device is installed on the crankshaft 2.
A table 24 is reciprocated by a motor 23 via a connecting rod 22 and a counterway 1-27. and transmits the same weight 27 to the reciprocating movement of the table 24.
It avoids reciprocating movement in the opposite direction.

A plurality of auxiliary weights 28 are removably attached to the counterweight 27 to change the stacking thereof, and the auxiliary weights 28 are covered by a large cover 29 fixed to the counterweight 27. This cover 29 protects the auxiliary weight 28, a guide rail (not shown) for guiding the reciprocating movement of the table 24, and the counterweight 27, etc. from grinding fluid and chips.

Then, the operator attaches this attachment to the table of the grinding machine, fixes the workpiece W on the table 24 of the attachment, and reciprocates it while performing grinding work using the grindstone of the grinding machine.

Furthermore, when the type of workpiece W is changed, the weight of the movement of the member that reciprocates with the table 24 changes, so the operator adjusts the number of auxiliary weights 28 attached to the counterweight 27 accordingly. The exercise weight on the weight side is made equal to the exercise weight on the table 24 side. Thereby, the reaction force generated by the reciprocating movement of the table 24 is canceled by the reaction force generated by the reciprocating movement of the counterweight 27, thereby preventing the generation of vibrations that cause a decrease in grinding accuracy.

[Problems to be Solved by the Invention] However, in the above-mentioned workpiece feeding attachment, it is necessary to adjust the number of auxiliary weights 28 each time the type of workpiece W is changed, but the auxiliary weights 28 are not covered as described above. 29, it is necessary to remove these two large covers to perform adjustment work, and the WA
The cleaning work was extremely complicated.

In addition, in order to solve this problem, it is possible to provide a small window in the cover 29 and attach/detach the auxiliary weight 28 from there, and to keep this small window closed during normal and normal times. In this case, the auxiliary weight must be attached and detached through a small window, which is expected to be extremely difficult to perform.

An object of the present invention is to provide a workpiece feeding attachment that allows easy adjustment of auxiliary weights.

[Means for Solving the Problems] The first invention can be attached to a processing machine equipped with a processing means such as a grindstone, and the workpiece is fixed and the workpiece is reciprocated with respect to the processing means of the processing machine. a counterweight that reciprocates in a direction opposite to the movement direction of the table in synchronization with the reciprocating movement of the table; a first cover fixed to the table or the attachment body to cover the counterweight; - It can be attached to and detached from the counterweight through the relief hole provided in the cover of the counterweight, and when attached to the counterweight, there is an auxiliary weight that protrudes outward from inside the cover, and a first one that covers the auxiliary weight. The gist is a workpiece feeding attachment consisting of a first cover and a second cover attached to the second cover.

The second invention is that in the workpiece feeding attachment of the first invention, the moving weight on the table side and the moving weight on the counterweight side are almost the same, and the workpiece and the auxiliary weight are fixed to the table and the counterweight. The gist of the workpiece feeding attachment is a workpiece feeding attachment provided with fixing means of approximately the same Im.

The gist of the third invention is that in the workpiece feeding attachment of the second invention, the auxiliary weight is the same workpiece as the workpiece to be machined.

[Operation] In the first invention, the reaction force generated by the reciprocating motion of the work and the table is offset by the reaction force generated on the counterweight and the auxiliary way 1 that reciprocate in opposite directions. Attaching and detaching the auxiliary weight involves attaching and detaching the second cover, but since the cover is small enough to cover the auxiliary weight, it can be easily attached and detached. Furthermore, since the auxiliary weight protrudes outward from the first cover through the escape hole of the first cover, it is easier to attach and detach the auxiliary weight.

In the second aspect of the invention, the auxiliary weight can be fixed to the counterweight easily and quickly using the fixing means in the same way as when fixing a workpiece to a table.

In the third invention, since the auxiliary weight to be fixed to the counterweight is the same workpiece as the workpiece fixed to the table, the table side and the counterweight side can be made the same by simply fixing this workpiece to the counterweight. Can be made into weight. Therefore, there is no need to measure the weight of the workpiece in order to determine the number of auxiliary weights.

[Embodiment 1] Hereinafter, an embodiment in which the present invention is embodied in an attachment for a grinding machine will be described with reference to FIGS. 1 to 4.

As shown in Figures 1 and 2, a crankshaft 2 is horizontally supported within the main body 1 of the attachment by three brackets 3, and a pulley 4 fixed to one end of the clamp piece 2 is attached to the main body 1 of the attachment. It is connected by a belt 6 to an output shaft 5a of a motor 5 attached to one side. The crankshaft 2 is provided with a pair of crank pins 2a that are 180 degrees out of phase and have the same rotation radius, and both crank pins 2a are connected to table side and weight side connecting rods 7.8.
One end of each is rotatably pivoted.

On the other hand, a table 10 and a counterweight 11 are provided on a guide rail 9 (shown in FIG. 1) installed on the main body 1 so as to be movable in the horizontal direction (left and right in FIGS. 1 and 2). The other ends of the table-side and weight-side connecting rods 7.8 are rotatably pivoted to operating members 10a and 11a protruding from the lower surfaces of the table 10 and the counterweight 11, respectively. When the crankshaft 2 rotates with the rotation of the motor 5, the table 10 and the counterweight 11 are guided by the guide rail 9 and synchronously reciprocate in opposite directions with the same stroke.

A jig 12 as a fixing means for fixing the workpiece W is mounted on the table 10, and a jig 12 identical to this jig 12 is also mounted on the counterweight 11. is attached.

As shown in FIG. 3.4, the main body 16 of the jig 12 is formed with one clamping surface 16a for gripping the workpiece W, and three sets of socket bolts 17a are mounted on the main body 16. The movable block 18 is fixed with a locking member 117b so that its position can be adjusted. On the side of the movable block 18 facing the clamping surface 16a of the main body 16, an upwardly facing inclined surface 18a is formed over the entire width of the jig 12, and a clamp piece 19 disposed at this location is formed.
is formed with an inclined surface 19a that can come into sliding contact with the inclined surface, and the four clamp pieces 19 are attached to the movable block 18.
It is fixed to the same movable block 18 with a socket bolt 20b with a spring 20a sandwiched between them. Furthermore, a clamp surface 19b is formed on the clamp piece 19 so as to face the clamp surface 16a of the main body 16.

Then, when the socket bolt 20b is tightened against the biasing force of the spring 20a, the inclined surface 19a of the clamp piece 19 shifts diagonally downward with respect to the inclined surface 18a of the movable block 18. 19b approaches the clamping surface 16a of the main body 16, and when the socket bolt 20b is loosened, the spring 2
The inclined surface 19 of the clamp piece 19 due to the biasing force 0a
a is shifted diagonally upward, so both clamping surfaces 16a.

19b is separated.

Incidentally, since the upper surfaces of the table 10 and the counterweight 11 are approximately the same height, the heights of both jigs 12 are also approximately the same.

As shown in FIG. 1.2, a first cover 13 is fixed to the table 10 so that the jig 12 protrudes upward. , the jig 12 of the counterweight 11 protrudes above the first cover 13. When the table 10 and the counterweight 11 reciprocate, the first cover 13 moves together with the table 10, and the jig 12 of the counterweight 11 moves as shown by the imaginary line in FIG.
is configured to reciprocate within the relief hole 13a of the first cover 13.

A second cover 14 is attached to the relief hole 13a of the second cover 13 so as to be able to open and close with a pair of hinges 15. is covered. Note that the first and second covers 13, 14 are for protecting the counterweight 11, guide rail 9, etc. from grinding fluid and chips accompanying the grinding operation.

The total weight of the table 10, the table side connector 7, the jig 12, the first and second covers 13, 14, etc. that reciprocate together with the table 10 (hereinafter, the table 10
The total weight of the counterweight 11, the weight-side connecting rod 8 that reciprocates integrally therewith, and the jig 12 (hereinafter referred to as the counterweight 1)
(referred to as the exercise weight of the first side) is set to the same weight.

Next, a case will be described in which a grinding operation is performed using the workpiece feeding attachment configured as described above.

First, this attachment is fixed on the table of a grinding machine, and the workpiece W to be processed is gripped by the jig 12 on the table 10 side of the attachment. Furthermore, the second cover 14 is opened, and the jig 12 on the side of the counterweight 11 installed inside is also gripped with a workpiece W that is exactly the same as the workpiece W, for example, a workpiece W to be machined next.
Close the second cover 14 again.

When the attachment is activated, the table 1° reciprocates as the motor 5 rotates as described above, and at the same time, the workpiece W held by the jig 12 on the table 1o starts reciprocating.

In process II, the workpiece W, which is being reciprocated by the grinding wheel of the grinding machine, is processed while the table of the grinding machine is stopped.

As mentioned above, the moving weight on the table 1o side and the moving weight on the counterweight 11 side are set equal, and the weight of the workpiece W gripped by both jigs 12 is also equal, and the weight on the table 1o side is set equal. The reaction force generated by the movement is offset by the reaction force generated by the movement of the counterweight 11 side. Therefore, according to the workpiece feeding attachment of this embodiment, even if the workpiece W is reciprocated for grinding, the reciprocation does not generate vibrations, so there is no risk of deterioration in grinding accuracy.

In addition, in the workpiece feeding attachment of this embodiment, since the workpieces W on both the table 10 side and the counterweight 11 side are approximately at the same height, no couple is generated due to the reciprocating movement of both. , this also causes no vibrations.

Furthermore, in the workpiece feeding attachment of this embodiment, the second cover 14 is connected to the jig 12. Since the jig 12 on the counterweight 11 side protrudes upward from the first cover 13, it is not only easy to open and close because it is a small cover that only covers the work W. can be done easily.

On the other hand, as described above, the workpiece feeding attachment of this embodiment is equipped with the jig 12 capable of holding the workpiece W on both the table 10 side and the counterweight 11 side, so that the force By simply fixing the same work W to the 11 side and the 11 side, the weights of both sides can be balanced. Therefore, in order to determine the number of weights that have the same weight as the weight of the workpiece W, such as when adjusting the weight of the counterweight and the counterweight 11 by attaching multiple weights D52, the weight of the workpiece W to be processed must be There is no need to measure ω.

Furthermore, as described above, the work W held by the jig 12
To remove the socket bolt 20b, it is sufficient to separate the two clamp surfaces 16a and 19b from each other.To make the jig 12 grip the workpiece W, the socket bolt 20b is tightened and both the clamp surfaces 16a and 19b are separated from each other. All you need to do is bring 19b closer. Both clamp surfaces 16a
, 19b can be easily approached and separated by simply operating the socket bolt 20b from above the jig 12.

Although the workpiece feeding attachment in this embodiment was intended for a grinding machine, it may be used for any processing machine that requires reciprocating movement of the workpiece W in order to process the workpiece W. For example, it may be embodied as an attachment for a milling machine.

In addition, in the work feed attachment of this embodiment, the jig 12 on the counterweight 11 side and the jig 1 on the table 10 side
Although the same number of workpieces W as in 2 was fixed to balance the number of hangings in both cases, the number of auxiliary weights corresponding to the number of hangings of the workpiece W may be fixed to the jig 12 on the counterweight 11 side. Even in such a case, since the jig 12 is originally for fixing the object, the auxiliary weight can be quickly and
and can be easily fixed.

Furthermore, in the workpiece feeding attachment of this embodiment, the rotational motion of the motor 5 is converted into linear motion by a crank mechanism in order to reciprocate the table 10 and the counterweight 11 in opposite directions. not limited,
For example, the table 10 and the counterweight 11 may be reciprocated by a pair of hydraulic cylinders that operate in synchronization with each other.

On the other hand, the workpiece feeding attachment of this embodiment uses a table 10 and a counterway to fix the workpiece W.
Although a jig 12 is provided for each of the table 10 and the counterweight 11, the point is that it is only necessary to fix the workpiece W to the table 10 and the counterweight 11, respectively.For example, a magnetic jack may be provided to each of the table 10 and the counterweight 11.

[Effects of the Invention] As described in detail, the workpiece feeding attachment of the present invention provides an excellent effect in that the adjustment work of the auxiliary weight can be easily performed.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the workpiece feeding attachment of the present invention, FIG. 2 is a partially cutaway plan view, FIG. 3 is a sectional view of the jig, FIG. 4 is a side sectional view of the jig, and FIG. The figure is PIJ
Cross-sectional view showing the workpiece feeding attachment of the continuous operation rectangle, No. 6
The figure is also a partially cutaway plan view. 1 is the main body, 10 is the table, 11 is the counterweight,
12 is a jig as a fixing means, 13 is a first cover 1
3a is an escape hole, 14 is a second cover, and W is a workpiece.

Claims (1)

[Claims] 1. A table (10 ), a counterweight (11) that reciprocates in a direction opposite to the movement direction of the table (10) in synchronization with the reciprocating movement of the table (10), and a table (11) that covers the counterweight (11).
0) or a first cover (13) fixed to the attachment body (1), and an escape hole (13) transparently provided in the first cover (13).
can be attached to and detached from the counterweight (11) via a),
An auxiliary weight protrudes outward from inside the cover (13) when attached to the weight (11), and a second cover (14) attached to the first cover (13) to cover the auxiliary weight. ) and a workpiece feeding attachment. 2. The exercise weight on the table (10) side and the exercise weight on the counterweight (11) side are almost the same, and the exercise weight on the table (10) side is almost the same.
0) and the counterweight (11) are equipped with fixing means (of approximately the same weight) for fixing the workpiece (W) and the auxiliary weight.
12). The workpiece feeding attachment according to claim 1, further comprising: 12). 3. The workpiece feeding attachment according to claim 2, wherein the auxiliary weight is the same workpiece (W) as the workpiece (W) to be machined.