TW201803684A - Auto-adjusting connection device for processing fixture comprising a base, a sleeve and a piston unit and a pulling bolt to avoid surface damage of the beads - Google Patents

Abstract

An auto-adjusting connection device for processing fixture, comprises a base, a sleeve and a piston unit, wherein the base has a containing chamber and a through hole, the sleeve is disposed in the containing chamber of the base, and has one end capable of being disassembled and axially displaceable to be connected to the through hole of the base, the sleeve has an outer annular surface, the outer annular surface is radially provided with a plurality of positioning holes for allowing the plurality of beads to be movably disposed therein, the piston unit is axially displaced in the containing chamber of the base and sleeved outside the sleeve, the piston unit includes an inner annular surface corresponding to the outer annular surface of the sleeve, said inner annular surface is provided with a ring groove and an abutting surface; thereby, processing precision and safety or processing process are improved, the service life of the processing fixture is prolonged, and the sleeve can be replaced separately when it is damaged, thereby reducing the maintenance cost.

Description

Automatic adjusting processing jig connecting device

The invention relates to a connection device for a processing machine, and more particularly to a connection device for a processing jig with an automatic adjustment function.

According to a general processing machine, a processing jig for fixing a workpiece is provided to facilitate processing of the workpiece, and the processing jig has many types of structures due to different processing methods and uses. For example, the "connecting device for electrical discharge machining fixture" shown in the invention patent No. I318149 is a conventional machining fixture connection device. The fixture for fixing a workpiece is provided with a pull bolt, which is formed by a hollow pipe at the base. Into the hollow acting part of the piston seat, the compressed air is introduced through the first air pressure pipe and the second air pressure pipe to cause the piston seat to resist axial movement in the spring. When the piston seat moves up, the bead of the hollow acting part consists of It is located at the concave arc ring groove of the ring seat and is guided by its arc guide. After being pushed by the inner diameter side wall of the ring seat, it is directly connected to the position of the pull bolt. When moving down, the bead of the hollow acting part returns to the concave arc ring groove of the corresponding ring seat, so that there is a movable space between the defined range of the bead and the concave arc ring groove, so that the pull bolt can be released from the hollow effect. The bead of the part is clamped. With this, after the workpiece processing is completed, it is convenient to remove the jig and the processed workpiece, and change and fix another jig for the workpiece to be processed, so as to shorten the time of the processing machine to wait for the removal of the workpiece and improve the processing machine. Processing efficiency.

However, in this conventional processing jig connection device, when the bead of the hollow acting part is pushed against the clamping bolt by the pushing of the inner diameter side wall of the ring seat, the force of each bead to clamp the pulling bolt will be concentrated on the bead At the contact point between the body and the pull bolt, when the processing machine using the processing jig is used for processing operations (especially the processing machine with a higher power, such as a CNC cutting machine ...), it is easy to make the pull bolt contact the bead body. The surface of the surface is damaged and depressed, resulting in an error in the combination of the pull bolt and the coupling device, which can not stably hold and position. The pull bolt is easy to shake during processing. This not only affects the processing accuracy of the processing machine, shortens the service life of the processing jig, and is easy to use. During the processing, the pull bolt and the coupling device are detached, and there is a concern about safety, so it is necessary to improve it.

The present inventor has concerns about the conventional connecting device for processing jigs, because the surface that is easily contacted by the pull bolt and the bead is damaged, which affects the machining accuracy of the processing machine, shortens the service life of the processing jig, and raises safety concerns. After thinking and designing the idea, after many discussions and trial samples, and many amendments and improvements, the invention was finally introduced.

The invention provides an automatic adjusting processing jig connection device. The processing jig is fixedly provided with a pull bolt. The connection device can be used for inserting and connecting the pull bolt. The pull bolt has a bearing ring portion. The connecting device includes: A base has a first surface and a second surface opposite to the first surface, the first mask has a container chamber and a perforation penetrating the container chamber and the second surface; a sleeve is disposed on In the accommodating chamber of the base, one end is detachably and axially displaceable and is combined with the perforation of the base. The shaft center portion of the sleeve has an insertion hole for insertion of the pull bolt. The sleeve has An outer torus, the outer torus is provided with a plurality of limiting holes in the radial direction, for a plurality of beads to be movably disposed in the limiting holes, and to limit the beads from falling into the insertion hole; a piston unit The piston unit has an inner annular surface and is axially movable and disposed in a receiving chamber of the base and sleeved outside the sleeve. Corresponding to the outer ring surface of the sleeve, the inner ring surface is provided with a ring groove and a pushing surface. When the piston unit is displaced to the first position toward the second surface of the base, a part of the bead can enter the In the ring groove of the inner ring surface, the entire insertion hole is separated from the insertion hole of the sleeve. When the piston unit is displaced to the second position from the first surface of the base, the bead is pushed by the inner ring surface toward the surface. The insertion hole of the sleeve pushes against, so that a part of the bead enters the insertion hole of the sleeve.

The main purpose of the present invention is that it pushes the bead of the sleeve toward the insertion hole by the pushing surface of the piston unit, and one end of the sleeve is detachable and axially displaceable and combined with the perforation of the base, so When the surface where the pull pin contacts the bead is damaged, the pushing surface can be used to cooperate with the design of the sleeve to be axially displaceable. The position of the bead is automatically adjusted with the damaged depression to avoid the combination of the pull pin and the connecting device. Errors occur to ensure that the positioning between the pull bolt and the connection device is indeed stable, the processing accuracy of Trenta and the safety of the processing process are improved, and the service life of the processing jig is extended.

A second object of the present invention is that the sleeve is detachably combined with the perforation of the base, the limiting hole of the sleeve is easy to process, and the sleeve can be replaced separately when it is damaged, which reduces maintenance costs.

1‧‧‧ pull bolt

1A‧‧‧Arriving in the ring department

1B‧‧‧ Depression

2‧‧‧ Connected device

10‧‧‧ base

11‧‧‧ the first side

12‧‧‧ second side

13‧‧‧capacity room

14‧‧‧ perforation

141‧‧‧ convex card

142‧‧‧Slot

20‧‧‧ sleeve

21‧‧‧ wear sets

211‧‧‧Card Making Department

212‧‧‧Elastic section

22‧‧‧ Positioning film

23‧‧‧ Collar

24‧‧‧ Insertion hole

25‧‧‧ outer torus

251‧‧‧ limit hole

252‧‧‧ beads

30‧‧‧Piston unit

31‧‧‧outer ring

32‧‧‧ inner ring

320‧‧‧ inner torus

321‧‧‧ ring groove

322‧‧‧ push face

33‧‧‧ Cover

X1‧‧‧thickness

X2‧‧‧Pitch

X3‧‧‧Adjust gap

P1‧‧‧First position

P2‧‧‧Second position

The first figure is an exploded perspective view of the present invention.

The second figure is a three-dimensional combined view of the present invention.

The third figure is a cross-sectional view of the second figure along line A-A.

The fourth figure is a cross-sectional view taken along line B-B of the second figure.

The fifth picture is an enlarged view of the circled part of the third picture.

The sixth figure is a schematic diagram of the operation of the pull plug insertion and connection device of the present invention.

The seventh figure is a schematic diagram of the clamping and fixing operation of the pull plug insertion and connection device of the present invention.

The eighth figure is a schematic view of the action of clamping and fixing the pull bolt by the loosening connection device of the present invention.

The ninth figure is a schematic diagram of the operation of pulling the bolt from the connecting device according to the present invention.

The tenth figure is a schematic diagram of the automatic adjustment operation of the present invention.

The eleventh figure is a perspective view of a sleeve according to another embodiment of the present invention.

The twelfth figure is a sectional view of the present invention.

The thirteenth figure is an enlarged view of the circled part of the twelfth figure.

Please refer to the first, second, third, fourth, and fifth drawings. The present invention automatically adjusts the processing jig connection device. The processing jig is used to fix the workpiece of the processing machine, and the center position is fixed. There is a pull bolt 1 having a bearing ring portion 1A. The connecting device 2 is fixed on a processing machine and can be inserted and connected by the pulling bolt 1. The connecting device 2 includes: a base 10, a The sleeve 20 and a piston unit 30.

The base 10 has a first surface 11 and a second surface 12 opposite to the first surface 11. The first surface 11 has a receiving chamber 13 and a perforation penetrating the receiving chamber 13 and the second surface 12. 14. A plurality of convex latching portions 141 are arranged on the inner ring of the perforation 14, and the convex latching portions 141 have a thickness X1, and a notch 142 is formed between each adjacent convex latching portion 141.

The sleeve 20 is disposed in the receiving chamber 13 of the base 10, and a reduced diameter penetration sleeve section 21 is provided at one end. A plurality of clamping sections 211 are arranged on the spacer ring on the sleeve section 21, and the clamping section 211 and the sleeve There is a distance X2 between the cylinders 20, and the distance X2 is greater than the thickness X1 of the convex card portion 141. After the insertion portion 21 passes through the notch 142 of the perforation 14 of the base 10 with the clamping portion 211, it is rotated by a predetermined angle to make the The locking portion 211 of the insertion section 21 is aligned with the convex locking portion 141 of the perforation 14 of the base 10, and then determined by plural numbers. The position piece 22 is inserted between each of the notches 142 of the perforation 14 of the base 10 and each of the clamping portions 211 of the sleeve 20 through-sleeve section 21, and a set of rings 23 is set on the perforations 14 of the base 10. The positioning piece 22 is fixed at one end facing the second surface 12 so that the sleeve 20 can be detachably combined with the perforation 14 of the base 10, the convex card portion of the base is locked within the gap, and the clamping portion of the sleeve and An adjustment gap is formed between the convex clamping parts of the base, and the sleeve 20 is restricted from rotating, and can only be axially displaced within the adjustment gap X3 (the difference between X2 and X1). An insertion hole 24 is provided for the pull bolt 1 to be inserted. The sleeve 20 has an outer annular surface 25. The outer annular surface 25 is provided with a plurality of limiting holes 251 in the radial direction for the plurality of beads 252 to move. It is disposed in the limiting hole 251 and restricts the bead 252 from falling into the insertion hole 24.

The piston unit 30 is disposed in the receiving chamber 13 of the base 10 and is sleeved on the outside of the sleeve 20. The piston unit 30 includes an outer ring member 31, an inner ring member 32 and a cover 33. The ring member 31 is sleeved on the outside of the inner ring member 32. The cover body 33 is set in the outer ring member 31 for fixing and fixing the outer ring member 31 and the inner ring member 32. Thus, the piston The unit 30 divides the accommodation chamber 13 of the base 10 into two spaces. By changing the pressure difference between the two spaces and the elastic force of the elastic element, the piston unit 30 can be driven to reciprocate axially. As for how to drive the piston unit 30 to move It is not the focus of the present invention, and it is a conventional technology, so it will not be repeated here. The inner ring member 32 has an inner ring surface 320 corresponding to the outer ring surface 24 of the sleeve 20, and the inner ring surface 320 is provided adjacently. An annular groove 321 and a pushing surface 322 are a slanting surface.

As a result, as shown in the sixth figure in use, when the piston unit 30 is driven to move to the first position P1 in the direction of the second surface 12 of the base 10, the ring groove 321 of the inner ring member 32 of the piston unit 30 is aligned with the The limiting hole 251 of the outer ring surface 25 of the sleeve 20 allows a part of the bead 252 to enter the ring groove 321 of the inner ring surface 32, and the whole is separated from the insertion hole 24 of the sleeve 20, so that the pull bolt 1 can be smoothly inserted. insert In the insertion hole 24 of the sleeve 20, as shown in the seventh figure, the piston unit 30 is driven to move to the second position P2 in the direction of the first surface 11 of the base 10, and the bead 252 is received by the inner ring member 32. The pushing surface 322 pushes toward the insertion hole 24 of the sleeve 20, so that a part of the bead 252 enters the insertion hole 24 of the sleeve 20, and it is pressed against the bearing ring portion 1A of the clamping pull bolt 1 to complete the pulling. The connection between the plug 1 and the connection device 2.

When the pull bolt 1 and the connecting device 2 are to be disassembled, as shown in the eighth and ninth figures, the piston unit 30 is driven to move in the direction of the second surface 12 of the base 10 and returns to the first position P1. The piston unit 30 The ring groove 321 of the inner ring member 32 is aligned with the limiting hole 251 of the outer ring surface 25 of the sleeve 20, so that a part of the bead 252 can enter the inner ring surface 321, and the whole is separated from the insertion hole 24 of the sleeve 20. After releasing the clamping of the pull bolt 1, the pull bolt 1 can be pulled out and separated from the connection device 2.

Furthermore, as shown in the tenth figure, when the processing operation is performed using the processing machine of the processing jig, the surface of the abutment ring portion 1A that the pull bolt 1 contacts with the bead 252 is damaged and the recessed portion 1B is formed, causing the pull bolt When an error occurs when the 1 and the connecting device 2 are combined, when the clamping and positioning cannot be performed stably, the piston unit 30 can be driven to move beyond the second position P2 in the direction of the first surface 11 of the base 10 by using the inner ring of the piston unit 30 The pushing abutment surface 322 of 32 cooperates with the sleeve 20 to move axially within an adjustment gap X3. The position of the bead 252 is automatically adjusted as the pull bolt 1 bears against the recessed portion 1B on the surface of the ring portion 1A, so that the position of the bead 252 is automatically adjusted so that There is no error in the combination of the pull bolt 1 and the connecting device 2 to ensure that the positioning between the pull bolt 1 and the connecting device 2 is indeed stable.

In addition, the outer ring member 31 and the inner ring member 32 of the present piston unit 30 may be provided as separate components as described above, and the outer ring member 31 and the inner ring member 32 may also be provided integrally.

In addition, as shown in the eleventh, twelfth, and thirteenth drawings, the bottom of the locking portion 211 of the sleeve portion 21 of the sleeve 20 is provided with a protrusion protruding from the bottom surface of the locking portion 211. A plurality of elastic portions 212 having compressive elasticity, and are elastically supported in the adjustment gap X3, It can be compressed as the adjustment gap X3 is reduced.

From the structure of the above specific embodiment, the following benefits can be obtained:

1. The self-adjusting processing jig connecting device of the present invention pushes the bead 242 of the sleeve 20 toward the insertion hole 23 with the pushing surface 322 of the inner ring member 32 of the piston unit 30, and one end of the sleeve 20 can The disassembly and axial displacement are combined with the perforation 14 of the base 10, so when the pull bolt 11 contacts the bead 242, the surface of the bearing ring portion 1A is damaged and the concave portion 1B is damaged, the pushing surface 322 can be used With the design that the sleeve 20 can be axially displaced, the position of the bead 322 is automatically adjusted as the recessed portion 1B is damaged, so that the pull bolt 1 and the connection device 2 are combined without error, and the space between the pull bolt 1 and the connection device 2 is ensured. The positioning is indeed stable, the processing accuracy and safety of the processing are improved, and the service life of the processing jig is extended.

2. The self-adjusting processing jig connecting device of the present invention, the sleeve 20 of which is detachably combined with the perforation 14 of the base 10, that is, the sleeve 20 and the base 10 are separate independent components, so the sleeve The limiting hole 241 of the cylinder 20 is easy to process, and the sleeve 20 can be replaced separately when it is damaged, and the maintenance cost of the Trent is reduced.

1‧‧‧ pull bolt

1A‧‧‧Arriving in the ring department

2‧‧‧ Connected device

10‧‧‧ base

11‧‧‧ the first side

12‧‧‧ second side

13‧‧‧capacity room

14‧‧‧ perforation

141‧‧‧ convex card

142‧‧‧Slot

20‧‧‧ sleeve

21‧‧‧ wear sets

211‧‧‧Card Making Department

22‧‧‧ Positioning film

23‧‧‧ Collar

24‧‧‧ Insertion hole

25‧‧‧ outer torus

251‧‧‧ limit hole

252‧‧‧ beads

30‧‧‧Piston unit

31‧‧‧outer ring

32‧‧‧ inner ring

320‧‧‧ inner torus

321‧‧‧ ring groove

322‧‧‧ push face

33‧‧‧ Cover

Claims (7)

The utility model relates to an automatic adjusting processing jig connecting device. The processing jig is fixedly provided with a pull bolt. The connecting device can be used to insert and connect the pull bolt. The pull bolt has a bearing ring portion. The connecting device includes: a base. Has a first surface and a second surface opposite to the first surface, the first mask has a container chamber and a perforation penetrating the container chamber and the second surface, and a plurality of spacer rings are arranged on the inner edge of the perforation. A convex card portion, the convex card portion having a thickness; a sleeve provided in the receiving chamber of the base, one end of which is provided with a reduced-diameter penetrating sleeve section, and a plurality of clamping sections are arranged on the spacer ring on the penetrating sleeve section There is a gap between the clamping part and the sleeve, the gap is greater than the thickness of the convex clamping part, and the sleeve section is detachable and axially displaceable in combination with the perforation of the base, so that the convex card of the base A part is clamped within the gap, and an adjustment gap is formed between the clamping part and the convex card part. The sleeve axis has an insertion hole for the pull bolt to be inserted. The sleeve has an outer Torus, the outer torus is provided with a plurality of limiting holes in the radial direction, and a plurality of beads can be movably disposed in the limiting holes. And restricts the bead from falling into the insertion hole; and a piston unit, which is axially movable, is disposed in the receiving chamber of the base and is sleeved outside the sleeve. The piston unit has a The inner ring surface corresponds to the outer ring surface of the sleeve. The inner ring surface is provided with a ring groove and a pushing surface. When the piston unit is displaced to the first position from the second surface of the base, a part of the bead It can enter the ring groove of the inner ring surface and completely disengage from the insertion hole of the sleeve. When the piston unit is displaced to the second position from the first surface of the base, the bead is pushed by the inner ring surface. Push against the insertion hole of the sleeve so that a part of the bead enters the insertion hole of the sleeve. The automatic adjusting processing jig connecting device as described in the first item of the patent application scope, wherein a gap is formed between each adjacent convex card portion of the base, and a sleeve portion of the sleeve passes through the card portion. After the perforated slot of the base is rotated, a predetermined angle is rotated so that the locking portion of the through-hole segment is aligned with the convex portion of the through-hole of the base. A plurality of positioning pieces are inserted between each of the locking parts, and a set of rings is set at the end of the base perforating toward the second surface, and the positioning pieces are fixed by the rings so that the sleeve is detachable from the base. The combination of perforation restricts the sleeve from rotating and can only be axially displaced within the adjustment gap range. The automatic adjusting processing jig connecting device according to item 1 of the scope of patent application, wherein the piston unit includes an outer ring member, an inner ring member and a cover body, and the outer ring member is sleeved on the inner ring member On the outside, the cover body is arranged in the outer ring member, and is used for fixing and fixing the outer ring member and the inner ring member. The automatic adjusting processing jig connection device described in item 3 of the scope of patent application, wherein the outer ring member and the inner ring member are integrally formed. The automatic adjusting processing jig connecting device according to item 3 of the scope of patent application, wherein the inner ring surface of the piston unit is arranged on the inner ring member. The automatic adjusting processing jig connection device as described in item 3 of the scope of patent application, wherein the pushing surface of the piston unit of the sleeve is an inclined surface. As described in item 1 or item 2 of the scope of the patent application, the processing jig connecting device for automatic adjustment, wherein the bottom side of the clamping portion of the sleeve penetrating section is provided with a plurality of elastic portions protruding from the bottom surface of the clamping portion, The elastic portion has compression elasticity, and is elastically supported in the adjustment gap, and can be compressed as the adjustment gap is reduced.