CN212241644U

CN212241644U - Dental glass ceramic clamping device

Info

Publication number: CN212241644U
Application number: CN202020129927.6U
Authority: CN
Inventors: 胡培鑫; 姚路; 何正娣; 聂子林; 吕启涛
Original assignee: Shenzhen Technology University
Current assignee: Shenzhen Technology University
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-12-29
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to the field of clamps and discloses a dental glass ceramic clamping device which comprises a base; the positioning part is connected with the base and is provided with a first groove; the clamping part is connected with the positioning part, a second groove is formed in the clamping part, the second groove and the first groove are matched to form a clamping groove used for clamping the glass ceramic retention handle, the clamping part further comprises an elastic piece, and the elastic piece is used for applying elastic tension between the positioning part and the clamping part. Through setting up the screens groove and can exert elastic tension's elastic component between screens groove both sides for the fixed handle accessible of arranging in the screens inslot is by the screens groove chucking. Compared with the existing mode of positioning by manually screwing the bolt, the device is simpler in positioning operation, so that the efficiency is improved.

Description

Dental glass ceramic clamping device

Technical Field

The utility model relates to an anchor clamps field, in particular to an anchor clamps for fixing dental glass pottery.

Background

The dental glass ceramic has the advantages of good biocompatibility, low heat conduction, stable and natural color, corrosion resistance, wear resistance and the like, is an ideal material for manufacturing dental restorations, and is well received by patients and stomatologists.

The workpiece to be machined consists of a fixed handle and a dental glass ceramic body. When the dental glass ceramic is machined, the dental glass ceramic needs to be clamped and fixed, and the current general method is a bolt fixing mode, namely, a fixing handle is screwed on a machining device through a bolt to fix a dental glass ceramic body. The mode wastes manpower and time and has low efficiency; and because the error of twisting, still can cause the glass ceramic body position to change, bring machining error from this, influence the machining precision.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dental glass ceramic clamping device, which aims at solving the problem of low efficiency of the existing fixing mode.

The utility model discloses further solve current fixed mode and probably influence the problem of machining precision because the glass ceramic position changes.

The utility model discloses a dentistry glass pottery clamping device includes:

a base;

the positioning part is connected with the base and is provided with a first groove;

the clamping part is connected with the positioning part, a second groove is formed in the clamping part, the second groove and the first groove are matched to form a clamping groove used for clamping the glass ceramic fixing handle, the clamping part further comprises an elastic piece, and the elastic piece is used for applying elastic tension between the positioning part and the clamping part.

Furthermore, the positioning portion further comprises a positioning hole for inserting the fixing handle, the positioning hole is communicated with the clamping groove, a retaining groove or a retaining block is arranged on the fixing handle, and a retaining block or a retaining groove matched with the retaining groove or the retaining block is arranged at the orifice of the positioning hole.

Further, the clamping portion further includes:

the second groove is positioned on the clamping piece and is arranged corresponding to the first groove;

and the fixing pin penetrates through the positioning part to be connected with the clamping piece, and the elastic piece is sleeved on the fixing pin.

Furthermore, the retention pin comprises two pin rods arranged in parallel, and one ends of the two pin rods respectively penetrate through the positioning parts on the two sides of the first groove and are respectively connected to the clamping pieces on the two sides of the second groove.

Furthermore, the retaining pin further comprises a pin head, the pin head is connected to the other ends of the two pin rods, and the elastic part comprises two springs which are respectively sleeved on the two pin rods and located between the positioning part and the pin head.

Furthermore, the positioning part is provided with a mounting hole for the pin rod to pass through, and the mounting hole is a counter bore.

Further, the clamping part further comprises a bushing, the bushing is sleeved on the pin rod and located between the elastic piece and the positioning part.

Furthermore, a lightening hole is formed in the position where the pin head is connected with the pin rod.

Furthermore, a workpiece ejection hole is formed in the center of the base and communicated with the first groove.

Furthermore, the clamping device further comprises a limiting part, the limiting part is located between the clamping part and the base, is connected with the positioning part, and has an adjustable connection position.

The beneficial effects of the utility model reside in that, through set up the screens groove that is used for carrying out the block to glass ceramic fixed handle in clamping device to and can apply elastic tension's elastic component between screens groove both sides, make this elastic tension of fixed handle accessible of arranging the screens inslot in by screens groove chucking. Like this, only need put into fixed handle screens groove can automatic chucking realize the location, for the mode that the bolt was carried out the location to current adoption is screwed up manually, operate simpler to make efficiency obtain promoting.

The utility model discloses further beneficial effect lies in, through setting up the locating hole with screens groove intercommunication to and be located locating hole aperture department, with the fixed handle on the retaining groove or retaining block matched with retaining block or the retaining groove, make the fixed handle put into the position of screens groove fixed, thereby avoided current bolt maintenance mode because twist the problem that moves the error and probably cause machining error, guaranteed the machining precision.

Drawings

Fig. 1 is a left side view structure diagram of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is an exploded view from another perspective of the present invention;

fig. 4 is a schematic front view of the present invention;

fig. 5 is a schematic sectional structure view of a-a in fig. 4.

In the figure: 1. a base; 11. a clamp fixing hole; 12. a workpiece ejection hole; 2. a clamping mechanism; 21. a positioning part; 211. positioning holes; 212. a retention block; 213. mounting holes; 214. a first groove; 215. a bushing mounting hole; 22. a clamping portion; 222. a retention pin; 2221. a pin head; 2222. a pin rod; 2223. lightening holes; 223. a bushing; 224. a clamping member; 2241. a second groove; 225. an elastic member; 23. a limiting member; 3. a workpiece to be processed; 31. a glass-ceramic body; 32. a retention groove; 33. and (5) fixing a handle.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1, a dental glass-ceramic workpiece 3 is composed of a glass-ceramic body 31 and a fixed handle 33. In order to meet the universal applicability of dental glass ceramics of various models on different processing equipment, the dental glass ceramics of different models produced by various manufacturers at present use fixed handles with the same specification.

Referring to fig. 2 and 3, the clamping device of the present embodiment includes a base 1 and a clamping mechanism 2. The four corners of the base 1 are provided with fixing holes 11 for fixing the clamping device on the processing equipment. The clamping mechanism 2 is disposed on the base 1 and includes a positioning portion 21 and a clamping portion 22. The positioning part 21 is connected with the base 1, and a first groove 214 is arranged on the positioning part; the clamping portion 22 is connected to the positioning portion 21, and is provided with a second groove 2241, the second groove 2241 and the first groove 214 cooperate to form a locking groove, and the locking groove is used for locking the fixed handle 33 placed inside. Both grooves are shown as V-shaped grooves, and may be provided in a circular or other desired shape. The grip part 22 further includes an elastic member 225, and the elastic member 225 is used to apply an elastic tensile force between the positioning part 21 and the grip part 22.

The elastic member 225 elastically deforms when the fixing handle 33 is inserted into the positioning groove, and accordingly generates a restoring force, and under the action of the restoring force, the clamping portion 22 is drawn close to the positioning portion 21, and the second groove 2241 and the first groove 214 clamp the fixing handle 33 tightly, so that the workpiece 3 to be processed is positioned. Meanwhile, due to the elastic property of the elastic element 225, the fixed handle 33 can be conveniently placed into or taken out of the clamping groove by external force. The positioning mode is simple to operate and short in time consumption, and the machining efficiency is improved.

Referring to fig. 2, in order to prevent the workpiece 3 from rotating in the circumferential direction during machining, the positioning portion 21 is further provided with a positioning hole 211 into which the fixing handle 33 is inserted, the positioning hole 211 is communicated with the detent groove, a fixing block 212 is provided at the hole opening, a fixing groove 32 is provided on the fixing handle 33, and the fixing block 212 is matched with the fixing groove 32 to define the circumferential position of the workpiece 3. If the fixing handle 33 is provided with a retention block, a retention groove for engaging with the retention block may be provided on the positioning portion 21. By limiting the circumferential position of the workpiece to be machined 3, the stability of the position of the workpiece to be machined 3 in the machining process can be guaranteed on one hand, and the consistency of the positions of the different workpieces to be machined in the clamping device can be guaranteed on the other hand, so that the position error possibly caused by manual screwing of the existing bolt retention mode is avoided, and the machining precision is guaranteed.

In order to make the insertion and removal operation of the fixing handle 33 easier and more labor-saving, the holding portion 22 of the present embodiment further includes a retaining pin 222. Referring to fig. 2, 4 and 5, the clamping portion 22 includes a clamping member 224, and a second groove 2241 is located on the clamping member 224 and is arranged corresponding to the first groove 214; the retention pin 222 passes through the positioning portion 21 and is connected to the clamping member 224, and the elastic member 225 is disposed on the retention pin 222.

Specifically, the retention pin 222 includes two pin bars 2222 arranged in parallel, one end of each of the two pin bars 2222 passes through the positioning portion 21 and is connected to the clamping member 224, and the other end is connected to the pin head 2221. The elastic member 225 includes two springs, which are respectively sleeved on the two pin bars 2222. The positioning portion 21 is provided with two mounting holes 213 for the pin 2222 to pass through, and the two mounting holes are laterally arranged in parallel and located at two sides of the first groove 214 respectively. Two mounting holes 2242 for mounting the pin bar 2222 are formed in the clamping member 224, and the two mounting holes are transversely arranged in parallel and are respectively located on two sides of the second groove 2241. Therefore, the structure that the clamping piece 224 can be pushed away from the positioning part 21 is formed, the fixing handle 33 can be placed in or taken out more easily, and the two pin bars 2222 are respectively connected to the positions, at the two sides of the second groove 2241, of the clamping piece 224, so that the pushing away operation of the clamping piece 224 can be more balanced.

Referring to fig. 3 and 5, the mounting hole 213 of the positioning portion 21 is a counter bore, so that the thickness of the pin 2222 passing through the positioning portion 21 can be reduced, and the pin 2222 can move relative to the positioning portion 21 more flexibly. The elastic member 225 is disposed between the positioning portion 21 and the pin head 2221. A bushing 223 is further arranged between the elastic piece 225 and the bottom of the counter bore, and the bushing 223 is sleeved on the pin bar 2222. The bushing is typically made of a soft material to limit the position of the pin relative to the mounting hole 213 so that it can move stably, while preventing the pin from contacting the counterbore side wall and causing wear.

Further, in order to prevent the elastic member from being elastically deformed by the weight of the pin head 2221, the pin head 2221 is provided with a lightening hole 2223, and the pin bar 2222 is connected to the pin head 2221 through the lightening hole 2223, as shown in fig. 2.

To prevent the fixed handle 33 from jamming in the clamp, a workpiece ejection hole 12 is provided in the center of the base 1, as shown in fig. 3.

In order to ensure that the clamping member 224 can be drawn close to the proper position of the positioning portion 21 after being pushed away each time, so that the clamping of the clamping groove on the fixing handle 33 is more stable, the clamping device is further provided with a limiting member 23. As shown in fig. 5, the stopper 23 is located between the holder 224 and the base 1, and is connected to the positioning portion 21. The position limiting member 23 is provided with an adjustable hole position, and the size of the position limiting member 23 is smaller than the size between the clamping member 224 and the base 1, so that the connecting position of the position limiting member 23 and the positioning portion 21 is adjustable, so as to limit the clamping member 224 at a proper position.

When the clamping device is used for positioning a to-be-machined piece of dental glass ceramics, the clamping piece 224 is pushed away from the positioning part 21 by pressing the fixing pin 222, so that the clamping groove is opened, and the fixing handle 33 can be easily placed into the clamping groove through the positioning hole 211; in the pressing process, the elastic piece 225 is elastically deformed, and under the action of the restoring force, the clamping piece 224 is close to the positioning part 21, so that the clamping groove clamps the fixed handle 33; after the machining is finished, the fixing pin 22 is pressed again to open the engaging groove, and the fixing handle 33 can be easily taken out. The positioning process is simple and convenient, and compared with the conventional bolt fixing mode, the bolt screwing operation time is saved, and the efficiency is improved. When the workpiece is placed, the fixing groove 32 on the fixing handle 33 is clamped on the fixing block 212 of the hole opening of the positioning hole, so that the accuracy and stability of the position of the workpiece to be machined can be ensured, and the machining precision is ensured.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. A dental glass ceramic clamping device is characterized in that: the method comprises the following steps:

a base;

2. The clamping device as claimed in claim 1, wherein the positioning portion further comprises a positioning hole for inserting the fixing handle, the positioning hole is communicated with the retaining groove, a retaining groove or a retaining block is arranged on the fixing handle, and a retaining block or a retaining groove matched with the retaining groove or the retaining block is arranged at the opening of the positioning hole.

3. Clamping device according to claim 1 or 2, characterized in that the clamping part further comprises:

4. The clamping device of claim 3, wherein the retention pin comprises two pin rods arranged in parallel, one end of each pin rod passes through the positioning part on both sides of the first groove and is connected to the clamping piece on both sides of the second groove.

5. The clamping device as claimed in claim 4, wherein the retaining pin further comprises a pin head connected to the other end of the two pin rods, and the elastic member comprises two springs respectively sleeved on the two pin rods and located between the positioning portion and the pin head.

6. The clamping device as claimed in claim 5, wherein the positioning portion is provided with a mounting hole for the pin rod to pass through, and the mounting hole is a counter bore.

7. The clamping device of claim 6 wherein said clamping portion further comprises a bushing disposed about said pin shaft between said resilient member and said positioning portion.

8. The clamping device of claim 5 wherein the pin head is provided with lightening holes at the point of attachment to the pin shaft.

9. A holding arrangement as claimed in claim 4, wherein the base is centrally provided with a workpiece ejection aperture which communicates with the first recess.

10. The clamping device of claim 4, further comprising a limiting member, wherein the limiting member is located between the clamping member and the base, is connected to the positioning portion, and has an adjustable connection position.