Machine head structure of vertical milling machine

Abstract

The utility model discloses a machine head structure of a vertical milling machine, which is characterized in that more than two slideways extending in the Z direction are arranged on a Y-direction side wall of a stand column, an L-shaped sliding block extending towards the Y direction is arranged on the slideways in a sliding manner, and a horizontal arm of the L-shaped sliding block is in transmission connection with a driving device through a transmission mechanism and can slide along the slideways under the driving of the transmission mechanism; the main shaft is detachably and fixedly arranged on a vertical arm of the stand column, and a limiting rod is arranged on the stand column and right above the sliding saddle. The saddle is of the L-shaped frame structure, the main shaft is arranged on the vertical arm of the saddle, and the horizontal arm of the saddle is erected on the slide way on the stand column, so that the limitation of the main shaft on the stand column structure on the vertical milling machine can be reduced, and the problem that the vertical milling machine is inconvenient to carry and assemble is solved by improving the structure of the stand column; by arranging the matched limiting mechanism parts on the stand column and the saddle, the problem that the stability of the main shaft is influenced due to the fact that the saddle is collided and damaged in the inching operation and control process of the saddle during machine testing or production can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical milling machines, in particular to a vertical milling machine. Background Art

[0002] A frame-type saddle is generally installed on the head of a vertical milling machine, and multiple slideways extending in the Z direction are installed on its inner wall, with the main spindle installed between the slideways. This structural setting can not only better support the main spindle, but also guide the Z stroke of the main spindle. However, it also determines that the size of the saddle is generally large. A highly stable structure must be installed on the milling machine to support the saddle. This also leads to the fact that most of the columns of the milling machine are thick and heavy, the production cost is high, and it is inconvenient to carry and assemble. The manufacturing cycle of the entire equipment is long. On the other hand, although limit sensors are generally installed at both ends of the slide, the upper limit sensor has limited limiting effect during the jog operation of the saddle during trial operation or production. In special circumstances, the saddle may move up beyond the range, causing damage to the slide or column structure, and it may also cause damage to the spindle end. Utility Model Content

[0003] In response to the problems existing in the above-mentioned prior art, the utility model provides a head structure of a vertical milling machine, in which the saddle is set as an L-shaped frame structure, and can reduce the restriction of the spindle on the column structure of the vertical milling machine, so as to solve the problem of inconvenient transportation and assembly of the vertical milling machine by improving the structure of the column, and can solve the problem of the saddle being damaged during the movement of the jog control saddle during machine testing or production, which affects the stability of the spindle.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is as follows:

[0005] The head structure of a vertical milling machine, wherein a column and a spindle are provided on the vertical milling machine, and both the column and the spindle extend in the Z direction; two or more slides extending in the Z direction are provided on a Y-direction side wall of the column, and an L-shaped slide extending in the Y direction is slidably installed on several of the slides, whose horizontal arms are connected to the driving device through a transmission mechanism and can slide along the slide under the drive thereof, and the spindle is detachably fixed on its vertical arm; a limit rod is provided on the column directly above the saddle.

[0006] As a further elaboration of the above technical solution:

[0007] In the above technical solution, the driving device is a circular motion driving device, the transmission mechanism is a screw-nut transmission pair, and a positioning clamping ring adapted to the nut is provided between the plurality of slideways on the saddle.

[0008] In the above technical solution, the saddle is a frame structure, and its vertical arm is formed with a number of mounting hole grooves arranged in the Z direction and adapted to the main shaft. The lower end portion and both side ends of the horizontal arm are formed with reinforcing ribs, and the upper end portion of the horizontal arm is provided with an anti-collision part below the limit rod.

[0009] In the above technical solution, the anti-collision member includes a pull rod, a rotating member and a buffer member. One end of the pull rod is hinged to the sliding saddle, and the other end extends obliquely to the top of the horizontal arm. The rotating member is provided on it and is transmission-connected to the buffer member. The buffer member is detachably fixed on the sliding saddle.

[0010] In the above technical solution, the limiting rod is connected to the column via a connecting arm, and the limiting rod, the connecting arm and the column are integrally formed.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by setting the saddle as an L-shaped frame structure, installing the spindle on its vertical arm, and placing its horizontal arm on the slideway on the column, the restriction of the spindle on the column structure of the vertical milling machine can be reduced, so that the problem of inconvenient transportation and assembly of the vertical milling machine can be solved by improving the structure of the column; by arranging matching limit mechanism components on the column and the saddle, the problem of the saddle being damaged and affecting the stability of the spindle during the jog operation of the saddle during trial operation or production can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of this embodiment;

[0013] Figure 2 Schematic diagram of the structure of the sliding saddle in this embodiment;

[0014] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0015] In the figure: 10, column; 20, main shaft; 30, slide saddle; 40, transmission mechanism; 60, limit rod; 61, connecting arm; 70, anti-collision part; 1, slideway; 2, positioning clamp; 3, mounting hole groove; 4, reinforcing rib; 5, pull rod; 6, rotating part; 7, buffer part. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] The embodiments described with reference to the accompanying drawings are illustrative and intended to explain the present application, and should not be construed as limiting the present application. In the description of this application, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, "several" and "a plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. A person skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. In this application, unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may include the first feature being directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower level than the second feature.

[0018] like Figure 1 As shown, the head structure of the vertical milling machine has a column 10 and a spindle 20 on the vertical milling machine, and both the column 10 and the spindle 20 extend in the Z direction; two or more slideways 1 extending in the Z direction are provided on a Y-direction side wall of the column 10, and an L-shaped 30 extending in the Y direction is slidably installed on several slideways 1, whose horizontal arms are connected to the driving device 50 through a transmission mechanism 40 and can slide along the slideway 1 under its drive, and the spindle 20 is detachably fixed on its vertical arm; a limit rod 60 is provided on the column 10 just above the slide saddle 30.

[0019] like Figure 2 As shown, the driving device 50 is a circular motion driving device, the transmission mechanism 40 is a screw-nut transmission pair, and a positioning clamp 2 adapted to the nut is provided between several slideways 1 on the slide saddle 30; the slide saddle 30 is a frame structure, and its vertical arm is formed with several mounting hole grooves 3 arranged in the Z direction and adapted to the main shaft, and the lower end portion and the two side ends of the horizontal arm are formed with reinforcing ribs 4, and the upper end portion of the horizontal arm is provided with an anti-collision member 70 below the limit rod 60; the limit rod 60 is connected to the column 10 through the connecting arm 61, and the limit rod 60, the connecting arm 61 and the column 10 are formed as one piece.

[0020] like Figure 3 As shown, the anti-collision member 70 includes a pull rod 5, a rotating member 6 and a buffer member 7. One end of the pull rod 5 is hinged to the slide saddle 30, and the other end extends obliquely to the top of the horizontal arm. A rotating member 6 is provided on it and is transmission-connected to the buffer member 7. The buffer member 7 is detachably fixed on the slide saddle 30.

[0021] It is understood that the rotating member 6 and the buffer member 7 can mitigate the impact force between the saddle 30 and the limit rod 60, preventing damage to the saddle 30 or the resulting vibration from affecting the stability of the main shaft. In this embodiment, both ends of the pull rod 5 are rotating structures, one end of which is hinged to the saddle 30 and the other end is matched with and hinged to the rotating member 6. The rotating member 6 is a roller and the buffer member 7 is a spring. The pull rod 5 and the buffer member are both installed on the horizontal side wall of the saddle 30. In actual application, they can also be installed on the vertical arm of the saddle 30.

[0022] During operation, the driving device drives the transmission mechanism 40 to drive the saddle 30 to slide along the slide 1, and the saddle 30 drives the main shaft 20 thereon to move synchronously. When it moves upward and approaches the limit position, the rotating part 6 first contacts the limit rod 60, and the buffer part 7 is compressed and deformed, preventing the rotating part 6 from being deformed by collision, and at the same time slowing down the upward movement of the saddle 30 until it stops.

[0023] The utility model sets the saddle 30 as an L-shaped frame structure, installs the main shaft 20 on its vertical arm, and sets its horizontal arm on the slide 1 on the column 10, so as to reduce the restriction of the main shaft 20 on the column structure of the vertical milling machine, so as to solve the problem of inconvenient transportation and assembly of the vertical milling machine by improving the structure of the column 10; by arranging matching limit mechanism components on the column 10 and the saddle 30, the problem of damaging the saddle 30 and even affecting the stability of the main shaft 20 during the jog operation of the saddle 30 during trial operation or production can be solved.

[0024] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A head structure of a vertical milling machine, wherein the vertical milling machine has a column and a spindle, both of which extend in the Z direction; characterized in that: One or more slideways extending in the Z direction are provided on a Y-direction side wall of the column, and an L-shaped saddle extending in the Y direction is slidably installed on several of the slideways. The horizontal arm thereof is connected to the driving device through a transmission mechanism and can slide along the slideway under the drive thereof, and the main shaft is detachably fixed on the vertical arm thereof; a limit rod is provided on the column directly above the saddle.

2. The head structure of the vertical milling machine according to claim 1, characterized in that: The driving device is a circular motion driving device, the transmission mechanism is a screw-nut transmission pair, and a positioning clamping ring adapted to the nut is provided on the slide saddle between the plurality of slideways.

3. The head structure of the vertical milling machine according to claim 1, characterized in that: The saddle is a frame structure, and its vertical arm is formed with a number of mounting hole slots arranged in the Z direction and adapted to the main shaft. The lower end portion and both side ends of the horizontal arm are formed with reinforcing ribs, and the upper end portion of the horizontal arm is provided with an anti-collision part below the limit rod.

4. The head structure of the vertical milling machine according to claim 3, characterized in that: The anti-collision member includes a pull rod, a rotating member and a buffer member. One end of the pull rod is hinged on the sliding saddle, and the other end extends obliquely to the top of the horizontal arm. The rotating member is provided on the pull rod and is transmission-connected to the buffer member. The buffer member is detachably fixed on the sliding saddle.

5. The head structure of a vertical milling machine according to any one of claims 1 to 4, characterized in that: The limiting rod is connected to the column through a connecting arm, and the limiting rod, the connecting arm and the column are formed in one piece.

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