TWI594837B - Screw machine processing machine screw seat positioning device - Google Patents

Description

Screw seat positioning device for processing machine power screw

The invention relates to the technical field of positioning positioning of a processing machine, in particular to a screw seat positioning device of a power screw of a processing machine.

According to the conventional high-precision processing machine, the most important problem lies in the assembly accuracy and related adjustment of the traditional system, especially the same level and coaxial line requirements of the power screw and the machine, which will directly affect the screw. Transmission efficiency and machining accuracy when machining objects, and the structural design of the screw seat and the power screw directly affects the difficulty of adjusting the power screw at the same level and coaxial line, especially after the power screw is removed and repaired. Repetitive positioning accuracy requirements, this part is the biggest problem of the conventional organization. In the past, the combination design of the screw seat and the power screw, when reinstalling after the power screw was removed and repaired, must rely on the senior technician, and then re-spent time to adjust the same horizontal axis accuracy of the power screw, which shows the well-known structural design. It is difficult to be competent in repeatability positioning accuracy, and must rely on senior technicians to work, can not effectively reduce the assembly threshold and assembly speed, and can not reduce the cost of construction.

Moreover, the conventional mechanism is to obtain a high-precision reference surface for assembly, and the processing of the relevant reference surface must be completed simultaneously with the machine component under the same machining parameters, and the machine component is a large workpiece, which must be used in machining. To large processing machines, even a 5-axis machining machine must be used, which is costly to process.

In order to make the members more aware of the conventional mechanism, please refer to the figures 6 to 8. Generally, the conventional processing machine is a fixed power screw 91, which is provided with a screw seat 92 at each end of the machine table, by each screw The seat 92 provides support and limit for the screw 91 and the Palin 93. In order to ensure rigidity, strength, and assembly accuracy, the screw base 92 is integrally formed with the base 94 of the processing machine, and is further disposed correspondingly to each screw seat 92 by a process such as a tunnel hole, a heat treatment, and a polishing finishing process. A shaft hole 921 provides for the penetration of the screw 91 and the arrangement of related components (e.g., Palin 93).

However, since the screw seat 92 has a reference positioning position, the end face of the shaft hole 921 is required to be finished with a reference plane to maintain the accuracy of assembling the screw 91 and the Palin 93, and to ensure the ends of the screw 91. Can maintain the same horizontal axis requirement at a preset.

Referring to FIG. 7, one of the assembly structures of the conventional screw seat 92 and the Palin 93 and the screw 91 is shown. In the figure, the screw seat 92 defines the shaft hole 921 as a class hole for the Palin 93 to be accommodated. In conjunction with the locking of the end cover 95, the Palin 93 and the screw 91 are restrained. Therefore, in order to ensure the accuracy of the abutment between the Palin 93 and the annular surface of the shaft hole 921, the step end surface of the shaft hole 921 and the annular surface of the shaft hole 921 are partially finished, such as the end face of the A1 end face and the inner hole face of the A2. However, the shaft hole 921 is a class of hole type, and the aperture (A5) of the non-placement Palin is only for the screw 91 to penetrate, so there is no need for finishing, but the A1 and A2 are involved in the installation of the Palin 93, and must be absolutely accurate. , but the screw seat 92 is integrally formed with the large base 94, When processing A1 and A2, it is necessary to use a large processing machine, and even a 5-axis machining machine must be used. The finishing conditions are demanding and the processing cost is extremely high.

As for the repeating positioning accuracy of the end cap 95 for reassembly after disassembly, generally more than one positioning pin 951 is passed through to position the end cap 95 to the screw seat 92 so as to be concentric with the shaft hole 921.

Referring to Fig. 8, there is another assembly structure of the conventional screw 81, the screw base 82 and the Palin 83, which significantly improves the mechanism of the prior art. In the figure, the screw base 82 and the base of the processing machine are shown. The seat 84 is integrally formed, and the shaft hole 821 is designed as a perforation of the same diameter. It is not the conventional class hole, and the bushing 83 is inserted to provide the Palin 83, and the sleeve 85 can be independent of the base 84. In the processing process, a small processing machine can be used, and the processing cost and measurement are further reduced. Although the same end face of the screw seat 82 and the sleeve 85 abuts, it is necessary to perform finishing (for example, the end face of A3 and the inside of A4) The hole face), and the sleeve 85 also needs to be positioned with the positioning pin 851 and the screw seat 82, but the diameter of the inner hole surface of the A4 is a single size, far more than the conventional type of the axial hole 921 in the A1, A2 and A5. , the processing conditions will be greatly reduced.

As described above, although the matching between the conventional screw seats 92 and 82 and the screws 91 and 81 is different, there are common defects, for example, the screw seats 92 and 82 are integrally formed with the bases 94 and 84 of the processing machine. Therefore, when the screw base 92, 82 or the shaft holes 921, 821 are to be finished, it is necessary to place the entire base 94, 84 on the processing tool, and the processing cost and the condition limit are high except for the inconvenience of transportation. Furthermore, the end cap 95 or the sleeve 85 must be positioned through the positioning pins 951, 851. Once the screws 91, 81 have maintenance requirements, and the positioning pins 951, 851 are detached, since the original pin holes have been reamed, the error value of the pin holes must be increased when the pin holes are used twice, and the end caps cannot be ensured. 95 or the sleeve 85 can maintain the two ends of the screws 91 and 81 concentric with the shaft holes 921 and 821, and the repetitive positioning accuracy is poor. To solve this deficiency, the additional technicians can only be re-appointed with the relevant instruments. Tuning, increasing the waste of time and time.

In view of the above problems and deficiencies of the prior art, it is an object of the present invention to provide a screw base positioning device for a power screw of a processing machine that provides a reference surface with high precision, low processing cost and high repetitive positioning.

According to the above object of the present invention, a screw seat positioning device for a power screw of a processing machine is provided, the processing machine having at least one screw seat, at least one Palin set locked to the screw seat, one end of the screw seat and the Palin sleeve And the screw seat positioning device; the screw seat positioning device; the screw seat includes a finishing first end surface, and a plurality of first and second locking holes formed on the first end surface. The utility model further comprises a positioning piece locked between the screw seat and the Palin set, and provides an axial and radial reference surface when the Palin set and the screw seat are connected, so as to adjust the Palin set to maintain the screw in one The same horizontal axis of the preset. With the above structure, the positioning piece is provided with high precision, low processing cost and high repetitive positioning reference surface, so that the Palin set and the screw can be quickly and conveniently connected to the screw seat again after maintenance and disassembly, and have Eliminate the use of the conventional locating pin and its missing.

1‧‧‧Base

2‧‧‧ screw seat

22‧‧‧Axis hole

24‧‧‧ first end face

242‧‧‧First keyhole

244‧‧‧Second keyhole

3‧‧ ‧ Palin kit

32‧‧ ‧ Palin

321‧‧‧Peilin shaft hole

322‧‧ ‧ Palin perforation

323‧‧ ‧ Palin lock hole

324‧‧ ‧ Palin sleeve hole

325‧‧ ‧ Palin sleeve rib

34‧‧‧End cover

4‧‧‧ screw

41‧‧‧ bushing

42‧‧‧Leather cover

5‧‧‧ Positioning film

52‧‧‧Circular body

521‧‧‧ Positioning plate shaft hole

522‧‧‧First perforation

523‧‧‧Second perforation

541‧‧‧ front end

542‧‧‧ rear end face

543‧‧‧ Inner torus

551, 552, 553‧‧‧ positioning ribs

61‧‧‧First locking element

62‧‧‧Second locking element

<知知>

81‧‧‧ screw

82‧‧‧ screw seat

821‧‧‧ shaft hole

83‧‧ ‧ Palin

84‧‧‧Base

85‧‧‧ bushings

851‧‧ Locating pin

91‧‧‧Power screw

92‧‧‧ screw seat

921‧‧‧Axis hole

93‧‧ ‧ Palin

94‧‧‧Base

95‧‧‧End cover

951‧‧‧Locating pin

A1, A3‧‧‧ end face

A2, A4‧‧‧ hole surface

A5‧‧‧ aperture

Fig. 1 is a schematic view showing an embodiment of a screw seat positioning device for a power screw of a processing machine of the present invention.

Figure 2 is a partial schematic view of the embodiment shown in Figure 1.

Fig. 3 is a partially exploded perspective view of the embodiment shown in Fig. 2.

Figure 4 is a schematic cross-sectional view of the embodiment shown in Figure 2.

Figure 5 is a schematic view of the positioning piece of the embodiment shown in Figure 3.

Figure 6 is a schematic view of an embodiment of a conventional machine power screw.

Figure 7 is a schematic cross-sectional view showing an embodiment of a conventional power tool screw.

Figure 8 is a cross-sectional view showing another embodiment of a conventional power tool screw.

Hereinafter, an embodiment of the screw seat positioning device of the power screw of the processing machine of the present invention will be further described with reference to the related drawings. In order to facilitate the understanding of the embodiments of the present invention, the same parts are denoted by the same reference numerals.

Referring to Figures 1 to 5, the screw seat positioning device of the power screw of the processing machine of the present invention has two screw seats 2 which are concentrically formed on the base 1 of the processing machine, and are respectively locked to the screw base 2 The Palin set 3 and the screw 4 which are respectively threaded through the screw seat 2 and the Palin set 3 and are bound by the respective Palin sets. The screw seat positioning device of the present invention comprises at least one positioning piece 5 disposed between the screw base 2 and the Palin sleeve 3, and the positioning piece 5 is provided when the Palin sleeve 3 is connected with the screw seat 2, High-precision, low-machining cost and high-repetition positioning benchmark.

The screw seat 2 is integrally formed with the base 1 of the processing machine, and a shaft hole 22 is formed through the screw seat 2 in the axial direction. The axially preset end surface of the screw seat 2 has a finished first end surface 24 and a plurality of forms. The first and second locking holes 242 and 244 are formed on the first end surface 24. In practice, the shaft bore 22 does not require finishing, thereby reducing the process and time of the same processing conditions as the machine housing 1.

The above-mentioned Palin kit 3 (known art) has a Palin sleeve 32, an end cap 34 that connects the Palin sleeve 32 and closes one end of the Palin sleeve. The Palin sleeve 32 is axially formed with a Palin sleeve shaft hole 321 and a plurality of Palin sleeve perforations 322, a plurality of Palin sleeve locking holes 323 formed on the front end surface of the Palin sleeve 32, and a plurality of rear end faces formed on the Palin sleeve 32. The Palin sleeve countersunk hole 324 and the outer peripheral edge of the Palin sleeve shaft hole 321 extend from the rear end surface of the Palin sleeve 32 (the same end surface as the Palin sleeve countersink hole 324). During implementation, each of the Palin sleeve counterbore 324 and the Palin sleeve perforation 322 are misplaced.

The end cap 34 is locked to the front end surface of the Palin sleeve 32 in cooperation with the Palin sleeve locking hole 323.

The positioning piece 5 has an annular body 52, a positioning piece shaft hole 521 formed through the annular body 52, and a plurality of first through holes 522 and second through holes 523 formed through the annular body 521. The annular body 521 has The front and rear end faces 541, 542 are finished, and the positioning piece shaft hole 521 has a finished inner ring surface 543. In the implementation, the first through hole 522 and the second through hole 523 respectively correspond to the positions of the first and second locking holes 242 and 244, and correspond to the position of the Palin sleeve through hole 322 and the Palin sleeve counter hole 324. In addition, the positioning piece shaft hole 521 inner ring surface 543 (such as 3 and 5), three positioning ribs 551, 552, and 553 are selectively formed at equal angles, except that the area of the inner surface 443 of the positioning shaft hole 421 can be saved (only for the positioning rib 551). 552, 553 inner ring surface for finishing), through the positioning ribs 551, 552, 553 to achieve the Palin sleeve 32 assembly, three points positioning and automatic centering convenience, etc. The positioning ribs 551, 552, 553 achieve the function of the V-shaped pillow, and more importantly, the positioning piece 5 is a separate sheet, which can be easily processed by a small processing machine alone, and the processing technology, conditions and cost are greatly reduced, and the precision is The requirements can be easily mastered, and the adjustment, disassembly and finishing of the assembly process is simpler, faster and more precise.

Therefore, the above is a preferred embodiment of the present invention, the various parts of the screw seat positioning device of the power screw of the processing machine are introduced, and then the assembly mode and the use characteristics of the present invention are introduced as follows: First, after aligning the positioning piece 5 The end surface 542 is abutted against the first end surface 24 of the screw base 2, and the first locking element 61 is correspondingly inserted into the first through hole 522 and then locked to the first locking hole 242 of the screw base 2 to fix the position piece 5 on the screw seat. 2 first end face 24. In this way, the front end surface 541 of the positioning piece 5 and the positioning piece shaft hole 521 provide an axial and radial positioning reference surface when the Palin sleeve 3 is locked. Since the shaft bases 2 are respectively disposed at two ends of the screw 4 in a group of at least two, after positioning, the positioning pieces 5 fixed on the respective screw seats have the same horizontal coaxial line requirements.

When the Palin set 3 is locked (as shown in FIG. 4), the rear end surface of the positioning piece 5 is abutted against the rear end surface of the Palin sleeve 32 (ie, opposite to the other end of the end cover 34). 541, and the Palin sleeve rib 325 abuts the inner ring surface 543 of the positioning piece shaft hole 521 (or locates the inner ring surface of the rib 551, 552, 553), so that the first locking element 61 of the lock setting piece 5 The head is received in the boring hole 324 of the Palin sleeve, and then the second locking member 62 extends through the ferrule sleeve 322 and the second through hole 523 and is then locked to the second locking hole 244 of the screw seat 2 .

Since the front end surface 541 of the positioning piece 5 and the positioning piece shaft hole 521 have the finishing reference surface, the position of the axial direction and the radial direction of the Palin sleeve 32 can be accurately limited and adjusted, so that the Palin set 3 is locked. Further, when the screw 4 is engaged with the sleeve 41 and the dust jacket 42 is disposed on the Palin sleeve 3, it can be maintained at a predetermined axis (concentric). In the future, once the screw 4 has been repaired or replaced due to wear, the screw 4 and the Palin kit 3 need only be removed for replacement or refinement. After the finishing is completed, the screw can be used according to the above embodiment. In the combination of the seat 2, since the positioning piece 5 has not moved, the original reference surface is still present, so that the quick locking assembly of the Palin set 3 and the screw 4 can be provided, and the high repetitive positioning desired by the creator of the present case is achieved. For the purpose of precision, it is not necessary to use the conventional structure as described above. Each time the screw is disassembled, the senior technician must be re-appointed, and the positioning accuracy of the same horizontal coaxial is re-adjusted.

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Changes that are well known to those skilled in the art are still within the scope of the invention.

5‧‧‧ Positioning film

52‧‧‧Circular body

521‧‧‧ Positioning plate shaft hole

522‧‧‧First perforation

523‧‧‧Second perforation

541‧‧‧ front end

542‧‧‧ rear end face

543‧‧‧ Inner torus

551, 552, 553‧‧‧ positioning ribs

Claims (10)

A screw seat positioning device for a power screw of a processing machine, the processing machine having at least one screw seat, at least one Palin set locked to the screw seat, one end extending the screw seat and the Palin set, and receiving a screw that is restrained by the Palin set; and the screw seat positioning device further includes: the screw seat has a first end surface formed by finishing on the axial end surface of the screw seat, and the first lock forming the first end face a hole and a second lock hole; a positioning piece is locked between the screw seat and the Palin sleeve, and provides a reference plane with an axial direction and a radial direction when the Palin sleeve is connected to the screw seat, In order to enable the Palin kit to adjust the screw to maintain a predetermined horizontal axis; the positioning piece has an axially extending positioning piece shaft hole, and a plurality of the first and second locking holes respectively a first through hole and a second through hole, and the positioning piece has an inner ring surface before and after finishing and an inner ring surface of the shaft hole, and the rear end surface of the positioning piece is abutted against the first end surface of the screw seat, and the positioning piece is used The front end surface and the inner annular surface of the shaft hole respectively provide axial and To the reference plane. The screw seat positioning device of the power screw of the processing machine according to the first aspect of the invention, wherein the Palin kit comprises a Palin sleeve and an end cap connecting the Palin sleeve; the Palin sleeve is axially penetrated to form There is a Palin shaft hole and a plurality of Palin sleeve perforations, a plurality of Palin sleeve locking holes formed on the front end surface of the Palin sleeve, a plurality of Palin sleeve counter holes formed in the rear end surface of the Palin sleeve, and along the Palin Outside the shaft hole a peripheral edge, a lining rib extending from the rear end surface of the lining sleeve, the lining of the lining sleeve is inserted into the shaft hole of the positioning piece, and the rear end surface of the lining sleeve abuts the front end surface of the positioning piece, and Positioned by its adjustment. A screw seat positioning device for a power screw of a processing machine, the processing machine having at least one screw seat, at least one Palin set locked to the screw seat, one end extending the screw seat and the Palin set, and receiving a screw that is constrained by the Palin set; and the screw seat positioning device further includes: the screw seat has a first end face formed on the axial end surface of the screw seat, and the first lock forming the first end face a hole and a second lock hole; a positioning piece is locked between the screw seat and the Palin sleeve, and provides a reference plane with an axial direction and a radial direction when the Palin sleeve is connected to the screw seat, In order to enable the Palin kit to adjust the screw to maintain a predetermined horizontal axis; the positioning piece has an axially extending positioning piece shaft hole, and the plurality of corresponding first and second locking holes respectively a first through hole and a second through hole, and three positioning ribs extending from the inner annular surface of the positioning plate shaft hole at equal angles, and the positioning piece has a finishing front surface, a rear end surface and an inner annular surface of each of the positioning ribs Passing through the rear end surface of the positioning piece to abut the first end surface, and The positioning piece and each distal end surface of the inner surface of the positioning of the ribs, respectively, to provide the axial and radial plane. The screw seat positioning device of the power screw of the processing machine according to the first aspect of the invention, wherein the Palin kit comprises a Palin sleeve and an end cap connecting the Palin sleeve; the Palin sleeve is axially penetrated to form There is a Palin shaft hole and a plurality of Palin sleeves a perforation, a plurality of a perforated lock hole formed in a front end surface of the Palin sleeve, a plurality of a Palin sleeve counter hole formed in a rear end surface of the Palin sleeve, and an outer peripheral edge of the shaft hole of the Palin sleeve, from the Palin sleeve The Paleo sleeve rib extending from the rear end surface is inserted into the shaft hole of the positioning piece, and the rear end surface of the Palin sleeve is abutted against the front end surface of the positioning piece, and is adjusted and positioned. The screw seat positioning device of the power screw of the processing machine according to the fourth aspect of the invention, wherein any two positioning ribs adjacent to each of the positioning ribs have a function of achieving a V-shaped pillow. A screw seat positioning device for a power screw of a processing machine, comprising at least one positioning piece fixedly locked to a screw seat, wherein the positioning piece has an axial hole through the positioning piece shaft hole and a plurality of first perforations And the second perforation, and the positioning piece has an inner ring surface before and after finishing, and an inner ring surface of the shaft hole, and the inner ring surface of the positioning hole and the inner ring surface of the shaft hole are respectively provided as a reference for the axial direction and the radial direction. surface. The screw seat positioning device of the power screw of the processing machine according to the sixth aspect of the invention, wherein the screw seat has a first end face and a plurality of precision formed on the axial end face of the screw seat for locking the positioning piece Forming a first locking hole and a second locking hole of the first end surface; and each of the first locking hole and each of the second locking holes respectively corresponding to each of the first through holes and each of the second through holes. A screw seat positioning device for a power screw of a processing machine, comprising at least one positioning piece fixedly locked to a screw seat, wherein the positioning piece has an axial hole extending through the positioning piece, and a plurality of a perforation and a second perforation, and three positioning ribs extending from the inner annular surface of the locating plate shaft hole at equal angles, and the positioning piece has The front and rear end faces of the finishing and the inner annular faces of the positioning ribs are respectively provided as reference faces for the axial direction and the radial direction through the front end faces of the positioning piece and the inner annular faces of the positioning ribs. The screw seat positioning device of the power screw of the processing machine according to the eighth aspect of the invention, wherein the screw seat has a first end face and a plurality of precision formed on the axial end face of the screw seat for locking the positioning piece Forming a first locking hole and a second locking hole of the first end surface; and each of the first locking hole and each of the second locking holes respectively corresponding to each of the first through holes and each of the second through holes. The screw seat positioning device of the power screw of the processing machine according to claim 8, wherein any two of the positioning ribs adjacent to the positioning rib have a function of achieving a V-shaped pillow.