A clamping tool for face drilling and milling

Abstract

The utility model discloses a kind of end face drilling and milling clamping tool, to change positioning block adaptation different diameter shaft, and it is fast and convenient to change, its technical scheme: a kind of end face drilling and milling clamping tool, including base, two recesses are arranged at intervals on the base along first direction, the two ends of the recess along second direction are open end, the second direction is horizontal direction and is perpendicular to the first direction;Positioning block is embedded in the recess, the bottom of the positioning block is arranged at intervals with two limit protrusions along the second direction, the interval of two limit protrusions is adapted to the length of the recess in second direction, to let the positioning block be stuck on the base;The positioning block is detachably connected with the base, the top of the positioning block is equipped with the arc-shaped groove for placing shaft along second direction;Belong to shaft processing technical field.

Description

Technical Field

[0001] This utility model belongs to the field of shaft machining technology, and more specifically, relates to an end face drilling and milling clamping fixture. Background Technology

[0002] After the shaft is formed, the end face needs to be drilled and milled to machine some holes, slots or chamfers. In order to improve efficiency, a lathe that can drill and mill on both sides is generally used, so the positioning and fixing of the shaft is very important.

[0003] Existing lathe fixtures all use V-grooves to position shafts, which can be used for shafts of different diameters. However, in practice, it has been found that the angle between the two planes of the V-groove is difficult to guarantee, and sometimes the axis of the V-groove and the axis of the shaft are not on the same vertical plane. It is often necessary to attach some aluminum foil or copper foil to the V-groove to adjust it so that the axis of the shaft and the axis of the V-groove are on the same vertical plane. This is extremely troublesome to operate, and it can take a lot of time for a novice to align the shaft, which wastes a lot of time. Utility Model Content

[0004] The main purpose of this utility model is to provide a face drilling and milling clamping fixture, which is designed to adapt to shafts of different diameters by changing the positioning block, and the change is quick and convenient.

[0005] According to a first aspect of the present invention, an end face drilling and milling clamping fixture is provided, including a base, on which two grooves are arranged at intervals along a first direction, and both ends of the grooves along a second direction are open ends, wherein the second direction is a horizontal direction and perpendicular to the first direction;

[0006] A positioning block is embedded in the groove. Two limiting protrusions are arranged at intervals along the second direction at the bottom of the positioning block. The distance between the two limiting protrusions is adapted to the length of the groove in the second direction so that the positioning block can be locked on the base. The positioning block is detachably connected to the base. The top of the positioning block is provided with an arc-shaped groove extending along the second direction for placing the shaft.

[0007] The base is equipped with a hydraulic cylinder, and the output end of the hydraulic cylinder is equipped with a clamping block. The clamping block is located above the positioning block, and the hydraulic cylinder drives the clamping block to rise and fall.

[0008] In the aforementioned end face drilling and milling clamping fixture, the top of the positioning block is lower than the top of the groove.

[0009] In the aforementioned end face drilling and milling clamping fixture, two contact blocks are arranged at intervals along the second direction on the clamping block. The contact blocks have arc-shaped notches, which are used to contact the shaft located in the arc-shaped groove.

[0010] In the aforementioned end face drilling and milling clamping fixture, the clamping block is provided with a through hole, and the end of the contact block away from the arc-shaped notch is provided with a connecting rod body, which passes through the through hole. The end of the connecting rod away from the contact block is provided with a circular baffle, the outer diameter of which is larger than the inner diameter of the through hole. A rubber pad is fitted on the connecting rod, and the rubber pad is located between the clamping block and the contact block.

[0011] In the aforementioned end-face drilling and milling clamping fixture, the length of the connecting rod is greater than the sum of the depth of the through hole and the thickness of the rubber pad.

[0012] In the aforementioned end-face drilling and milling clamping fixture, the outer diameter of the connecting rod is smaller than the inner diameter of the through hole.

[0013] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0014] In this invention, a positioning block is provided to place the shaft. The arc-shaped groove on the positioning block can be adapted to the shaft, and the positioning block can be replaced to accommodate shafts of different diameters. The positioning block is positioned by a groove, which can easily and accurately lock onto the base. The two limiting protrusions on the positioning block can better restrict the position of the positioning block and prevent misalignment. Based on this, the shaft position can be accurately positioned without repeatedly pasting aluminum foil or copper foil. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a top view of the first embodiment of the present invention;

[0017] Figure 2 This is the first embodiment of the present utility model. Figure 1 AA section view;

[0018] Figure 3 This is a left view of the first embodiment of the present invention.

[0019] The figure labels for each figure are as follows:

[0020] 1. Base; 11. Groove; 2. Positioning block; 21. Limiting protrusion; 22. Arc groove; 3. Hydraulic cylinder; 4. Pressing block; 41. Through hole; 5. Contact block; 51. Arc notch; 6. Connecting rod; 7. Circular baffle; 8. Rubber pad. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.

[0023] Reference Figures 1 to 3 As shown, a face drilling and milling clamping fixture includes a base 1, on which two grooves 11 are arranged at intervals along a first direction. Both ends of the grooves 11 along a second direction are open ends. The second direction is horizontal and perpendicular to the first direction.

[0024] A positioning block 2 is embedded in the groove 11. Two limiting protrusions 21 are arranged at intervals along the second direction at the bottom of the positioning block 2. The distance between the two limiting protrusions 21 is adapted to the length of the groove 11 in the second direction so that the positioning block 2 can be locked on the base 1. The positioning block 2 is detachably connected to the base 1. The top of the positioning block 2 is provided with an arc-shaped groove 22 extending along the second direction for placing the shaft.

[0025] A hydraulic cylinder 3 is provided on the base 1. A clamping block 4 is provided at the output end of the hydraulic cylinder 3. The clamping block 4 is located above the positioning block 2. The hydraulic cylinder 3 drives the clamping block 4 to rise and fall.

[0026] A positioning block 2 is set up to place the shaft. The arc groove 22 on the positioning block 2 can be adapted to the shaft and position the shaft. The positioning block 2 is replaceable, so it can be adapted to shafts of different diameters. The shaft is then fixed by the clamping block 4, and end face drilling and milling can be performed. The positioning block 2 is positioned by the groove 11, which can be easily locked onto the base 1 and the position is accurate. The two limiting protrusions 21 on the positioning block 2 can better restrict the position of the positioning block 2 and prevent the positioning block 2 from being misaligned. Based on this, the position of the shaft can be accurately positioned without repeatedly pasting aluminum foil and copper foil.

[0027] In practice, both the groove 11 and the positioning block 2 are precision machined to ensure assembly accuracy. The positioning block 2 is fixed to the groove 11 by bolts. After the positioning block 2 is engaged in the groove 11, it can be fixed with bolts for accurate positioning.

[0028] In this embodiment, the top of the positioning block 2 is lower than the top of the groove 11. After the positioning block 2 is inserted into the groove 11, if the positioning block 2 is seen to be lower than the groove, it is determined that the installation is in place; otherwise, it is necessary to check whether the size of the positioning block 2 is incorrect.

[0029] A strip track can be fixed on the base to form a groove 11, and the top of the positioning block 2 is lower than the top of the strip track.

[0030] In this embodiment, two contact blocks 5 are arranged at intervals along the second direction on the clamping block 4. The contact blocks 5 have arc-shaped notches 51, which are used to contact the shaft located in the arc-shaped groove 22.

[0031] The clamping block 4 is provided with a through hole 41. The end of the contact block 5 away from the arc-shaped notch 51 is provided with a connecting rod body 6. The connecting rod body 6 passes through the through hole 41. The end of the connecting rod away from the contact block 5 is provided with a circular baffle 7. The outer diameter of the circular baffle 7 is larger than the inner diameter of the through hole 41. A rubber pad 8 is sleeved on the connecting rod. The rubber pad 8 is located between the clamping block 4 and the contact block 5.

[0032] The length of the connecting rod 6 is greater than the sum of the depth of the through hole 41 and the thickness of the rubber pad 8, and the outer diameter of the connecting rod is smaller than the inner diameter of the through hole 41.

[0033] Before the clamping block 4 is pressed down to fix the shaft, the connecting rod hangs down under the action of gravity and is suspended on the clamping block 4 by the circular baffle 7. When the clamping block 4 is pressed down, the contact block 5 contacts the shaft. The clamping block 4 applies pressure to the contact block 5 by the rubber pad 8 so that the contact block 5 presses against the shaft. At this time, the circular baffle 7 does not contact the clamping block 4. During this process, because the outer diameter of the connecting rod is small and the rubber pad 8 is elastic, the contact block 5 can be slightly shaken. Even if the contact block 5 is not completely aligned with the shaft, the contact block 5 can still slightly shift and make steady contact with the shaft, applying pressure to the shaft.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A face drilling and milling clamping fixture, characterized in that, Includes a base, on which two grooves are spaced apart along a first direction, and both ends of the grooves along a second direction are open, the second direction being horizontal and perpendicular to the first direction; A positioning block is embedded in the groove, and the top of the positioning block is lower than the top of the groove; two limiting protrusions are arranged at intervals along the second direction at the bottom of the positioning block, and the distance between the two limiting protrusions is adapted to the length of the groove in the second direction so that the positioning block can be locked on the base; the positioning block is detachably connected to the base, and the top of the positioning block is provided with an arc-shaped groove extending along the second direction for placing the shaft. The base is equipped with a hydraulic cylinder, and the output end of the hydraulic cylinder is equipped with a clamping block. The clamping block is located above the positioning block, and the hydraulic cylinder drives the clamping block to rise and fall.

2. The end face drilling and milling clamping fixture according to claim 1, characterized in that, Two contact blocks are arranged at intervals along the second direction on the clamping block. The contact blocks have arc-shaped notches, which are used to contact the shaft located in the arc-shaped groove.

3. The end face drilling and milling clamping fixture according to claim 2, characterized in that, The clamping block has a through hole, and the end of the contact block away from the arc-shaped notch has a connecting rod body. The connecting rod body passes through the through hole, and the end of the connecting rod away from the contact block has a circular baffle plate. The outer diameter of the circular baffle plate is larger than the inner diameter of the through hole. A rubber pad is fitted on the connecting rod, and the rubber pad is located between the clamping block and the contact block.

4. The end face drilling and milling clamping fixture according to claim 3, characterized in that, The length of the connecting rod is greater than the sum of the depth of the through hole and the thickness of the rubber pad.

5. The end face drilling and milling clamping fixture according to claim 3, characterized in that, The outer diameter of the connecting rod is smaller than the inner diameter of the through hole.

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