JPH0428575Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an inclination adjustment device for a bistable for dental laboratory work used for cutting a patient's dental plaster mold.

<Prior Art> Dental techniques include cases in which a technique is applied to one tooth alone and cases in which a technique is applied to a plurality of consecutive teeth. In addition, we added techniques to multiple teeth at random,
In some cases, techniques may be added to parts of the process.

The above-mentioned cutting device is used during such dental techniques,
It is used to partially separate a patient's dental plaster cast depending on the work performed by the dental technician.

Conventional cutting equipment freely moves and positions the tooth row plaster mold with respect to the rotating cutting cutter, but
A solenoid plunger mechanism or the like is used.

<Problems to be solved by the invention> Therefore, conventional cutting devices had problems in that the entire mechanism was complicated and the cost was high.

The present invention was proposed in order to solve such conventional problems, and an object of the present invention is to provide a bistable tilt adjustment device for dental laboratory work that has a simple structure and can reduce costs.

<Means for solving the problem> In order to achieve this objective, the inclination adjustment device for dental laboratory work according to the present invention has a main body base plate with:
A cylindrical holding case with an opening at the top and a tapered upper part of the inner peripheral surface is attached, a joint ball is provided inside the holding case, and a support shaft of the upper part of the joint ball protrudes from the top opening. The lower surface of the vice table is fixed to the top, a slide piece is installed inside the holding case so as to be able to slide horizontally, and the threaded part of the inner end of the feed shaft is inserted horizontally into the holding case, and the threaded part at the tip of the slide piece is inserted horizontally into the holding case. is screwed onto a horizontally facing internal thread in the sliding direction of the slide piece, and a ball push-up member for receiving the lower part of the joint ball in a recess formed on the upper surface is provided in the holding case so as to be slidable in the vertical direction. The recess formed on the lower surface of the ball push-up member is supported by the upper side of the link whose lower part is attached to the slide piece along an axis perpendicular to the sliding direction of the slide piece.

<Operation> According to the above-described configuration, by rotating the feed shaft in the forward and reverse directions, the slide piece inside the holding case is screw-fed in the forward and reverse directions, whereby the link is raised or collapsed, and the slide piece inside the holding case is rotated in the forward and reverse directions. The ball push-up member is moved up and down, and as it rises, the ball is pressed against the inner tapered surface inside the holding case and is locked.

Further, the ball is unlocked by lowering the ball pushing member, and the bistable can be freely tilted to set a desired cutting inclination.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows an embodiment of a tilt adjustment device for dental laboratory work according to the present invention.

In the same figure, a cutting cutter 3 for cutting a tooth row plaster mold 2 fixed on a vice table 1 is installed orthogonally to the end of a horizontal rotating shaft 4, and this cutting cutter 3 is not shown in the figure. It is designed to move up and down with respect to the tooth row plaster mold 2 by a vertical movement mechanism that does not move.

On the vice table 1, as shown in FIG. 2, receiving claws 6, 6 are provided upright. Further, a slide guide groove 8 in which a slide piece 7 is arranged is formed in the center of the vice table 1, and a screw shaft 9 having a handle 5 penetrates the side wall of the table 1 and is screwed into the slide piece 7. are doing. On the slide piece 7, there is a feed pawl 10 having a horizontal pin 10a at the top.
is installed upright, and the screw shaft 9 is connected by the handle 5.
, slide the slide piece 7 into the slide guide groove 8, and adjust the position of the feed pawl 10 in the left-right direction in the figure to place the tooth row plaster mold 1 on the table 1 with the receiving pawls 6, 6 and It can be held and fixed by the feed claw 10.

A table holder 11 is protruded from the center of the lower surface of the vice table 1, and the upper end of a support shaft 14 protruding from the upper part of the ball 13 constituting the universal joint 12 is fixed to the table holder 11. This support shaft 14 is provided with a flange 14a for receiving the table support 11.

The ball 13 of the universal joint 12 is attached to the main body base 24
It is housed in a cylindrical holding case 15 fixed above (more specifically on the vise base 16), and the holding case 15 has an upper inner circumferential surface formed in a tapered shape, and Opening 15a at the top
has been formed. Further, inside the holding case 15, a ball push-up member 17 having a conical receiving recess 17a formed on the upper surface is arranged so as to be vertically slidable. The bottom is supported.

A feed shaft 19 having a handle 18 passes through the side wall of the holding case 15, and a threaded portion 19a at the tip is screwed into a horizontal female threaded portion 21a formed in a slide piece 21 on a slide piece receiver 20 inside the case 15. ing.

As shown in FIGS. 4 and 5, this slide piece 21 has left and right sides 22b of a U-shaped link 22 that are attached to locking pins 23 on both sides of the piece 21 in a direction perpendicular to the sliding direction of the piece. Therefore, it is rotatably attached. The upper part of the link 22 is an abutment part 22a having an arcuate cross section, and this abutment part 22a abuts an abutment recess 17b formed on the lower surface of the ball pushing member 17 and having a triangular cross section.

In addition, in the figure, 25 is a presser arm, 26 is a long hole,
28 is a projection, 29 is a circular groove, 30 is a clamp lever, 31 is a clamp shaft, 31a is a threaded portion, and 32 is a female threaded portion.

In the universal joint 12 configured in this way, when the slide piece 21 is slid to the left in FIG. is lowered by the weight of the upper part. Therefore, the pressing force of the ball push-up member 17 against the ball 13 is relaxed, and the bistable 1 can be tilted forward, backward, left, and right at a desired angle.

After tilting the table 1 to a desired angle, when the feed shaft is reversed using the handle 18, the slide piece 21 is slid to the right in FIG. The push-up member 17 is pushed up and the ball 13
is brought into pressure contact with the tapered portion 15b of the case 15,
The bistable 1 is held and fixed in an inclined state as shown by the chain line in FIG.

<Effects of the invention> As explained above, according to the invention, the configuration is extremely simplified compared to the conventional method that uses a solenoid plunger mechanism etc. to set the cutting slope It is possible to reduce costs.

According to the present invention, the dental plaster mold on the vise table can be easily cut to the front, back, left, and right when performing precise cutting at any point between all the tooth rows of the upper and lower jaws as needed. It can be moved freely, such as by circular rotation or changing the angle, and the cutting location can be easily positioned with respect to the cutting cutter.

Further, the bistable that has been set in position can be reliably held and fixed according to the configuration of the present invention, so that no displacement occurs during cutting, cutting precision can be maintained, and this is an excellent safety measure.

[Brief explanation of the drawing]

Fig. 1 is a side view of a tilt adjustment device for dental laboratory work according to an embodiment of the present invention, Fig. 2 is a plan view of a bistable of the device, and Fig. 3 is a vertical sectional view of the universal joint of the device. , FIG. 4 is a cross-sectional view taken along the line -- in FIG. 3, FIG. 5 is a cross-sectional view taken along the line -- in FIG. be. In the figure, 1...bice table, 2...dental plaster mold, 3...cutting cutter, 4...rotating shaft, 5...
Handle, 6... Receptacle pawl, 7... Slide piece, 8...
...Slide guide groove, 9...Screw shaft, 10...Feed pawl, 10a...Pin, 11...Table holder, 1
2... Universal joint, 13... Ball, 14... Support shaft, 14a... Flange, 15... Holding case,
15a...Top opening, 15b...Top tapered part, 16...Vise base, 17...Ball pushing member, 17a...Receiving recess, 17b...Abutment recess, 18...Handle, 19...Feeding shaft , 19a
...Screw part, 20...Slide piece holder, 21...
Slide piece, 21a...Horizontal female thread part, 22...
Link, 22a... Contact portion, 23... Stopping pin,
24...Body base.

Claims (1)

[Scope of utility model registration request] A cylindrical holding case with an opening at the top and a tapered upper part of the inner circumferential surface is attached to the main body base plate, and a joint ball is provided inside this holding case, and a joint ball is provided inside the holding case, and a joint ball is provided inside the holding case. The lower surface of the vise table is fixed to the support shaft at the top of the into-ball, the slide piece is installed in the holding case so as to be slidable laterally, and the threaded inner end of the feed shaft is inserted horizontally into the holding case. , the threaded part at the tip is screwed into the horizontal female threaded part of the slide piece in the sliding direction, and the ball push-up member, which receives the lower part of the joint ball in the recess formed on the upper surface, is inserted into the holding case in the vertical direction. A dental technique in which a recess formed on the lower surface of the ball push-up member is supported by an upper side of a link whose lower part is attached to a slide piece with an axis perpendicular to the sliding direction of the ball push-up member. Tilt adjustment device for work bistable.