CN210475547U

CN210475547U - Radial drill main shaft locating sleeve

Info

Publication number: CN210475547U
Application number: CN201920907435.2U
Authority: CN
Inventors: 谢新生
Original assignee: Tianjin Jingjun Precision Mould Co Ltd
Current assignee: Tianjin Jingjun Precision Mould Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-05-08
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a radial drill main shaft positioning sleeve, which comprises a sliding device and a rolling positioning device, wherein the rolling positioning device is positioned below the sliding device, the sliding device comprises a connecting ring arranged around a main shaft, a first sliding groove with a downward opening is arranged in the connecting ring, and the sliding device also comprises a sliding rod in sliding fit with the first sliding groove; the rolling positioning device comprises a positioning ring arranged around the main shaft, the top surface of the positioning ring is fixedly connected with the bottom surface of a sliding rod, a rotating groove is formed in the side surface, close to the main shaft, of the positioning ring, a ball matched with the rotating groove is arranged in the rotating groove, the ball is in contact with the main shaft so that the rolling positioning device is in rolling connection with the main shaft and positions the main shaft, the rolling positioning device rolls up and down along the main shaft under the pushing of external force, and the sliding rod in the sliding device moves up and down in a telescopic mode along a first sliding groove along with the rolling. A processing groove is formed in the workpiece to be processed, and the drill bit needs to drill a hole at the part below the bottom of the processing groove.

Description

Radial drill main shaft locating sleeve

Technical Field

The utility model belongs to the technical field of radial drill positioner technique and specifically relates to a radial drill main shaft position sleeve is related to.

Background

Radial drills may also be referred to as cross arm drills. The radial drilling machine mainly comprises a base, an inner upright post, an outer upright post, a rocker arm, a spindle box, a workbench and the like. The main spindle box is a composite component and consists of a main transmission motor, a main spindle and main spindle transmission mechanism, a feeding and speed changing mechanism, an operating mechanism of a machine tool and the like. The main spindle box is arranged on a horizontal guide rail of the rocker arm and can be operated by a hand wheel to move along the rocker arm on the horizontal guide rail.

When machining, the main spindle box is fastened on the rocker guide rail by a special clamping device, the outer upright post is fastened on the inner upright post, the rocker is fastened on the outer upright post, and then drilling machining is carried out. During drilling, a drill bit arranged on a main shaft performs rotary cutting and longitudinal feeding at the same time, and the motion mode is as follows:

1. the main motion of the radial drilling machine is the rotation motion of the main shaft;

2. the feeding motion is longitudinal feeding of the main shaft;

3. the auxiliary exercise comprises the following steps: the rocker arm vertically moves along the outer upright post, the spindle box moves along the length direction of the rocker arm, and the rocker arm and the outer upright post rotate around the inner upright post together.

In the prior art, a main shaft of a radial drilling machine needs to be frequently started, stopped, rotated forward and backward, the main shaft is large in abrasion, the main shaft is easy to generate circular jumping during drilling, the accuracy of the drilled hole is low, the deviation is large, burrs are more, and therefore a positioning sleeve is needed for positioning the main shaft. The current locating sleeve is fixedly connected with the main shaft (the locating sleeve and the main shaft do not move relatively). When a workpiece to be machined needs to be punched by stretching the main shaft into the workpiece, if the positioning sleeve is arranged at a position far away from the drill bit, the positioning effect of the positioning sleeve on the drill bit is poor; if the positioning sleeve is arranged at a position close to the drill bit, the positioning sleeve can prevent the main shaft from extending into a workpiece to be processed for processing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a radial drill main shaft position sleeve aims at solving the problem that exists when the present position sleeve that mentions in the background art advances line location to the main shaft.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a radial drilling machine spindle positioning sleeve comprises a sliding device and a rolling positioning device, wherein the rolling positioning device is positioned below the sliding device, the sliding device comprises a connecting ring arranged around a spindle, a first sliding groove with a downward opening is formed in the connecting ring, a plurality of first sliding grooves are formed in the first sliding groove and are uniformly distributed in the connecting ring, and the sliding device further comprises a sliding rod in sliding fit with the first sliding groove; the rolling positioning device comprises a positioning ring arranged around a main shaft, the top surface of the positioning ring is fixedly connected with the bottom surface of a sliding rod, a rotating groove is formed in the side surface, close to the main shaft, of the positioning ring, the rotating groove is provided with a plurality of and uniformly distributed in the positioning ring, a ball matched with the rotating groove is arranged in the rotating groove, the ball is in contact with the main shaft, so that the rolling positioning device is in rolling connection with the main shaft and is positioned on the main shaft, the rolling positioning device rolls up and down along the main shaft under the pushing of external force, and the sliding rod in the sliding device moves up and down along a first sliding chute along with the rolling positioning.

As a further improvement of the present invention, the height of the ball protruding turning groove portion is smaller than the radius of the ball.

As a further improvement, the slide bar is provided with a slider on the side wall, a second chute matched with the slider is arranged in the connecting ring, the notch of the second chute is higher than the notch of the first chute, and a stop ring is formed between the notch of the first chute and the notch of the second chute.

As a further improvement of the utility model, an elastic part is arranged between the bottom of the first chute and the top surface of the sliding rod.

As a further improvement, the positioning ring is provided with a separation blade for preventing flying chips or dust from entering the rotating groove, and the separation blade is close to the notch of the rotating groove.

As a further improvement of the present invention, the first sliding groove surface or/and the sliding rod surface is/are provided with a coating for reducing friction.

As a further improvement of the present invention, a coating layer for reducing friction is provided on the second sliding groove surface or/and the slider surface.

Compared with the prior art, the beneficial effects of the utility model are that:

1. from the beginning of drilling to the end of drilling, the bottom surface of the positioning ring is always abutted against the surface of a workpiece to be machined, so that the distance between the positioning sleeve and the drill bit is always kept shortest on the premise of not influencing the drilling work, and the positioning effect is good;

2. due to the arrangement of the balls, the friction force between the rolling positioning device and the main shaft is extremely small, and the main shaft is hardly abraded;

3. the positioning ring, the connecting ring and the sliding rod are used for fixing the main shaft together under the synergistic effect, so that the circular jumping of the main shaft in the drilling process is prevented, the positioning is accurate, and the abrasion of the main shaft is greatly reduced.

Drawings

FIG. 1 is a schematic view of the device of the present invention during drilling a workpiece to be processed;

FIG. 2 is a front view of the device of the present invention;

fig. 3 is a side view of the device of the present invention.

The reference numerals are explained below: 1. a main spindle box; 2. a sliding device; 21. a first chute; 22. an elastic member; 23. a connecting ring; 231. a blocking ring; 24. a second chute; 25. a slider; 26. a slide bar; 3. a rolling positioning device; 31. a positioning ring; 32. rotating the groove; 33. a ball bearing; 4. a workpiece to be processed; 41. processing a groove; 5. a main shaft; 6. a drill bit.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example 1:

as shown in fig. 1, 2 and 3, a main shaft positioning sleeve of a radial drilling machine is fixed on a main shaft box 1 and comprises a sliding device 2 and a rolling positioning device 3, wherein the rolling positioning device 3 is positioned below the sliding device 2, the sliding device 2 comprises a connecting ring 23 arranged around a main shaft 5, a first sliding groove 21 with a downward opening is arranged in the connecting ring 23, the first sliding groove 21 is provided with a plurality of sliding rods 26 which are uniformly distributed in the connecting ring 23, and the sliding device 2 further comprises a sliding rod 26 in sliding fit with the first sliding groove 21; the rolling positioning device 3 comprises a positioning ring 31 arranged around the main shaft 5, the top surface of the positioning ring 31 is fixedly connected with the bottom surface of the sliding rod 26, a rotating groove 32 is arranged in the side surface of the positioning ring 31 close to the main shaft 5, a plurality of rotating grooves 32 are uniformly distributed in the positioning ring 31, balls 33 matched with the rotating grooves 32 are arranged in the rotating grooves 32, the balls 33 are in contact with the main shaft 5 so that the rolling positioning device 3 is in rolling connection with the main shaft 5 and positions the main shaft 5, the rolling positioning device 3 rolls up and down along the main shaft 5 under the pushing of external force, and the sliding rod 26 in the sliding device 2 moves up and down along the first sliding chute 21 along with the rolling positioning device 3. The workpiece 4 to be processed is provided with a processing groove 41, and the drill 6 needs to drill a part below the bottom of the processing groove 41. When the punching is not started, the drill 6 and the main shaft 5 extend into the processing groove 41, and the bottom surface of the positioning ring 31 abuts against the surface of the workpiece 4 to be processed. After the drill bit 6 punches a workpiece 4 to be machined, the positioning ring 31 rolls upwards along the main shaft 5, the sliding rod 26 slides upwards along the first sliding groove 21 along with the connecting ring 23, the positioning sleeve cannot obstruct the drilling work, and due to the arrangement of the balls 33, the friction force between the rolling positioning device 3 and the main shaft 5 is extremely small, and the main shaft 5 is hardly abraded. The positioning ring 31, the connecting ring 23 and the sliding rod 26 cooperate to fix the main shaft 5, so that circular jumping of the main shaft 5 in the drilling process is prevented, the positioning is accurate, and the abrasion of the main shaft 5 is greatly reduced. From the beginning of drilling to the end of drilling, the bottom surface of the positioning ring 31 is always abutted against the surface of the workpiece 4 to be machined, so that the distance between the positioning sleeve and the drill bit 6 is always kept shortest on the premise of not influencing the drilling work, and the positioning effect is good.

Example 2:

The height of the portion of the ball 33 protruding the rotation groove 32 is smaller than the radius of the ball 33. The above structure is similar to that of a bullseye universal ball, the ball 33 can freely rotate in the rotating groove 32 and cannot fall out of the rotating groove 32, and the stability of the rolling positioning device 3 is improved.

The side wall of the sliding rod 26 is provided with a sliding block 25, the connecting ring 23 is internally provided with a second sliding chute 24 matched with the sliding block 25, the notch of the second sliding chute 24 is higher than the notch of the first sliding chute 21, and a stop ring 231 is formed between the notch of the first sliding chute 21 and the notch of the second sliding chute 24. The provision of the stopper ring 231 prevents the slide bar 26 from slipping out of the connection ring 23, improving the stability of the slide device 2. In addition, the lengths of the first sliding chute 21 and the sliding rod 26 can be specifically set according to the length of the main shaft 5, so that the bottom surface of the positioning ring 31 is flush with the bottom surface of the main shaft 5 under the condition of no drilling, and the distance between the positioning sleeve and the drill bit 6 is kept to be the shortest on the premise of not influencing the drilling work.

An elastic piece 22 is arranged between the groove bottom of the first sliding groove 21 and the top surface of the sliding rod 26. The provision of resilient member 22 improves the stability of slide bar 26 in sliding up and down.

The positioning ring 31 is provided with a stopper (not shown) for preventing flying chips or dust from entering the rotation groove 32, and the stopper is close to the notch of the rotation groove 32. During drilling of the drill bit 6, the generated flying debris (or dust in the working environment) may splash (fall) into the rotation grooves 32, causing abrasion of the balls 33, and the baffle plate may reduce the above-mentioned phenomenon.

A coating (not shown) for reducing friction is provided on the surface of first runner 21 or/and the surface of slide bar 26. The coating can be a TiN coating, an HT-TiCN coating, an MT-TiCN coating or the like.

The surface of the second runner 24 and/or the surface of the slider 25 is provided with a coating (not shown) for reducing friction. The coating can be a TiN coating, an HT-TiCN coating, an MT-TiCN coating or the like.

The working principle is as follows: when the punching is not started, the drill 6 and the main shaft 5 extend into the processing groove 41, and the bottom surface of the positioning ring 31 abuts against the surface of the workpiece 4 to be processed. After the drill bit 6 punches a workpiece 4 to be machined, the positioning ring 31 rolls upwards along the main shaft 5, the sliding rod 26 slides upwards along the first sliding groove 21 along with the connecting ring 23, the positioning sleeve cannot obstruct the drilling work, and due to the arrangement of the balls 33, the friction force between the rolling positioning device 3 and the main shaft 5 is extremely small, and the main shaft 5 is hardly abraded. The positioning ring 31, the connecting ring 23 and the sliding rod 26 cooperate to fix the main shaft 5, so that circular jumping of the main shaft 5 in the drilling process is prevented, the positioning is accurate, and the abrasion of the main shaft 5 is greatly reduced. From the beginning of drilling to the end of drilling, the bottom surface of the positioning ring 31 is always abutted against the surface of the workpiece 4 to be machined, so that the distance between the positioning sleeve and the drill bit 6 is always kept shortest on the premise of not influencing the drilling work, and the positioning effect is good.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A radial drilling machine spindle positioning sleeve comprises a sliding device (2) and a rolling positioning device (3), wherein the rolling positioning device (3) is positioned below the sliding device (2), and is characterized in that the sliding device (2) comprises a connecting ring (23) arranged around a spindle (5), a first sliding groove (21) with a downward opening is formed in the connecting ring (23), a plurality of first sliding grooves (21) are uniformly distributed in the connecting ring (23), and the sliding device (2) further comprises a sliding rod (26) in sliding fit with the first sliding groove (21); roll positioner (3) including holding ring (31) around main shaft (5) setting, the top surface and slide bar (26) bottom surface fixed connection of holding ring (31), be equipped with rotation groove (32) in holding ring (31) are close to the side of main shaft (5), rotation groove (32) are equipped with a plurality ofly and the equipartition in holding ring (31), be equipped with in rotation groove (32) and rotate groove (32) complex ball (33), ball (33) and main shaft (5) contact so that roll positioner (3) and main shaft (5) roll connection and fix a position main shaft (5), under the external force impetus, roll positioner (3) roll from top to bottom along main shaft (5), slide bar (26) in slider (2) along with roll positioner (3) along first spout (21) telescopic motion from top to bottom.

2. The radial drill spindle positioning sleeve according to claim 1, wherein the height of the portion of the ball (33) protruding out of the rotation groove (32) is smaller than the radius of the ball (33).

3. The radial drilling machine spindle positioning sleeve according to claim 1, wherein a sliding block (25) is arranged on the side wall of the sliding rod (26), a second sliding groove (24) matched with the sliding block (25) is arranged in the connecting ring (23), the notch of the second sliding groove (24) is higher than the notch of the first sliding groove (21), and a blocking ring (231) is formed between the notch of the first sliding groove (21) and the notch of the second sliding groove (24).

4. The positioning sleeve for the spindle of the radial drilling machine as claimed in claim 1, characterized in that an elastic member (22) is arranged between the bottom of the first sliding groove (21) and the top of the sliding rod (26).

5. The radial drilling machine spindle locating sleeve according to claim 1, characterized in that a blocking piece for preventing flying chips or dust from entering the rotating groove (32) is arranged on the locating ring (31), and the blocking piece is close to the notch of the rotating groove (32).

6. The radial drilling machine spindle positioning sleeve according to claim 1, characterized in that the surface of the first slide groove (21) or/and the surface of the slide bar (26) is provided with a coating for reducing friction.

7. The radial drill spindle positioning sleeve according to claim 3, characterized in that the surface of the second runner (24) or/and the surface of the slide (25) is provided with a coating for reducing friction.