WO2017152300A1

WO2017152300A1 - Water-cooling shell for servo motor and manufacturing processes thereof

Info

Publication number: WO2017152300A1
Application number: PCT/CN2016/000213
Authority: WO
Inventors: 孙建明
Original assignee: 孙建明
Priority date: 2016-03-07
Filing date: 2016-04-22
Publication date: 2017-09-14

Abstract

A water-cooling shell for a servo motor and manufacturing processes thereof, said water-cooling shell for a servo motor comprising a cylindrical body (1) and sealing heads (2); a plurality of water-passing holes (13) are provided between inner and outer walls of the cylindrical body (1), the plurality of water-passing holes are distributed along the cylindrical body (1) circumferentially, and penetrate the end surfaces of both ends of the cylindrical body (1); a plurality of water-passing channels (14) are provided on the end surfaces of both ends of the cylindrical body (1); all of the water-passing holes (13) and the water-passing channels (14) are connected as a single water-flow path; ports of the water-passing channels (14) are sealed by the sealing heads (2). The shell features simple manufacturing processes, low manufacturing costs and high efficiency.

Description

Water-cooled casing of servo motor and manufacturing process thereof

Technical field

The invention relates to a water-cooled casing of a servo motor and a manufacturing process thereof.

Background technique

The rare earth magnet in the servo motor used in electric vehicles loses magnetism when the temperature exceeds 100 °C. Therefore, the servo motor needs to use a water-cooled casing. The water-cooling casing of the existing servo motor is manufactured by first obtaining the inner casing and the outer casing by low-pressure casting, then coiling the copper pipe outside the inner casing, and finally fixing the outer casing to the outer side of the copper pipe. The disadvantages are: high manufacturing cost and low efficiency.

Summary of the invention

It is an object of the present invention to provide a water-cooled casing for manufacturing a servo motor having low cost and high efficiency and a manufacturing process thereof.

A first technical solution for achieving the object of the present invention is: a water-cooled casing of a servo motor, comprising a cylinder body and a head; a plurality of inner and outer walls of the cylinder body are disposed between the cylinder body and distributed in the circumferential direction of the cylinder body a water-passing hole at both end faces of the body, a plurality of water-passing holes are provided on both end faces of the cylinder body, and all the water-passing holes and the water-passing water tank are connected to form a single water flow passage; the notch of the water-passing tank is sealed by the sealing head .

A first preferred technical solution of the sealing head: the number of the sealing heads is consistent with the number of the water-passing tanks, and one-to-one correspondence; the limiting groove of the through-water tank of the cylinder body is provided with a limiting step, and the sealing head is sealed Fixed on the limit step.

A second preferred technical solution of the head: the head is provided with two pieces, and the shape of the head is consistent with the shape of the end surface of the barrel; one of the heads is provided with a water inlet pipe And a large through hole or notch of the water outlet pipe, or one of the two small through holes or notches which can respectively pass through the inlet pipe and the outlet pipe, or one of the two heads can pass through the inlet pipe Or small through holes or notches of the water outlet pipe; the two sealing heads are respectively sealed and fixed on both end faces of the cylinder body.

A preferred technical solution of the cylinder is that the inner wall of the water-passing hole of the cylinder is provided with internal teeth.

The inner teeth of the inner wall of the water-passing hole of the cylinder have a straight strip shape distributed along the circumferential direction of the cylinder body, or an annular shape distributed along the axial direction of the cylinder body, or a spiral shape extending in the axial direction of the cylinder body. .

The manufacturing process of the water-cooled casing of the above servo motor includes the following steps:

1. A long tube having a plurality of water-passing holes distributed in the circumferential direction and extending through the end faces of both ends is extruded by profile extrusion;

2. According to the size requirements of the casing, the long pipe is cut into a suitable length.

3. The through-water tank is machined on both end faces of the cylinder so that all the water-passing holes and the water-passing tank are connected into a single water flow channel; when the number of water-passing holes of the cylinder body is a double number: two of each water-passing hole The end portions are respectively connected to the ends of the two water-passing holes on both sides of the water-passing hole and adjacent to the water-passing holes through a through-water tank disposed on the end surface of the cylinder body, wherein the two water-passing holes in the same water-passing tank The end of the hole is used for water inlet and outlet, respectively, and the slots of the remaining through water tank are sealed by a sealing head to form a single water flow passage between the inlet and the outlet;

When the number of water-passing holes of the cylinder is singular: two ends of a pair of adjacent water-passing holes which are not at the same end are used for water inlet and outlet, respectively, and the ends of each of the other water-passing holes are respectively Through a through-water tank disposed on the end surface of the cylinder, respectively, two water-passing holes on both sides of the water-passing tank are connected, and the notch of the water-passing tank is sealed by the sealing head, so that a single one is formed between the water inlet and the water outlet. Water flow channel.

4, the production of the head: the number of the head is consistent with the number of the water tank, and one-to-one correspondence, the slot of the through-water tank of the cylinder is provided with a limit step, the seal is sealed and fixed on the limit step;

Or making two heads, and the shape of the head is consistent with the shape of the end surface of the cylinder, and the two heads are respectively sealed and fixed on both end faces of the cylinder, and one of the heads is provided with a water inlet pipe And a large through hole or notch of the water outlet pipe, or one of the two small through holes or notches which can respectively pass through the inlet pipe and the outlet pipe, or one of the two heads can pass through the inlet pipe Or a small through hole or gap in the water outlet.

5. Install the head.

Both the barrel and the head are made of a deformed aluminum alloy.

A second technical solution for achieving the object of the present invention is: a water-cooled casing of a servo motor, comprising a cylinder body and a head; a water inlet hole, a water outlet hole and a plurality of water inlet holes are provided between the inner and outer walls of the cylinder body a water passing hole; the water inlet hole and the water outlet hole are disposed adjacent to each other; the inlet of the water inlet hole and the outlet of the water outlet hole are disposed on an outer circumferential surface of the cylinder; the inlet of the water inlet hole and the inlet of the water outlet hole are both disposed The water-passing holes are distributed along the circumferential direction of the cylinder and extend through the end faces of the two ends of the cylinder; the end faces of the two ends of the cylinder are provided with a plurality of water-passing holes; The water outlet and all the water holes are connected by a water-passing tank to form a single liquid passage; the notch of the water-passing tank is sealed by a sealing head.

When the number of the water-passing holes of the cylinder is a double number, the inlet of the water inlet hole and the outlet of the water outlet hole are close to the same end of the cylinder; when the number of the water-passing holes of the cylinder is a single number, the inlet hole is The outlets of the inlet and the outlet are respectively adjacent to the ends of the cylinder.

A through-hole is provided in the cylinder at a position avoiding the liquid passage.

A first preferred technical solution of the sealing head is that a limiting step is provided at the notch of the through-water tank of the cylinder, and each of the limiting steps is sealed and fixed with a sealing head.

A second preferred technical solution of the head: the head is provided with two pieces, and the shape of the head is consistent with the shape of the end surface of the barrel; the two heads are respectively sealed and fixed to the two of the barrel On the end face.

The inner wall of the water-passing hole of the cylinder is provided with internal teeth.

The cylinder is made of a deformed aluminum alloy.

The head is an aluminum alloy or a rubber or plastic part.

A pipe joint is sealed and fixed in the inlet of the water inlet hole of the cylinder and the outlet of the water outlet hole.

3. The water inlet hole and the water outlet hole are processed on the cylinder body, and the inlet of the water inlet hole and the outlet of the water outlet hole are all disposed on the outer circumferential surface of the cylinder body, and the inlet of the water inlet hole and the inlet of the water outlet hole are disposed in the cylinder body. On the end face; then processing the water tank on both end faces of the cylinder, so that the water inlet hole, the water outlet hole, and all the water passing holes are connected through the water tank to form a single liquid passage;

4. Install a pipe joint in the inlet of the inlet hole of the cylinder and the outlet of the outlet hole;

5. Make and install the head.

By adopting the above technical solutions, the present invention has the following beneficial effects: (1) The invention has the advantages of clever structure, simple processing technology, low manufacturing cost and high efficiency.

(2) The inner wall of the water-passing hole of the cylinder of the present invention is provided with internal teeth, which can increase the heat exchange area and effectively improve the cooling efficiency.

(3) The invention has the advantages of ingenious structure, simple processing technology, low manufacturing cost and high efficiency, and the inlet of the water inlet hole and the outlet of the water outlet hole are all disposed on the outer peripheral surface of the cylinder body to facilitate the arrangement of the water pipe.

(4) The position of the cylinder of the present invention avoiding the liquid passage is provided with a through-line through hole for facilitating the extraction of the connecting line.

(5) The cylinder of the invention is made of a deformed aluminum alloy, which is convenient for extrusion casting, simplifies the production process, and has good heat conduction effect.

(6) The inlet of the water inlet hole of the cylinder of the present invention and the outlet of the water outlet hole are sealed and fixed with a pipe joint to facilitate connection of the water pipe.

DRAWINGS

In order to make the content of the present invention more easily understood, the present invention will be further described in detail below with reference to the accompanying drawings

Fig. 1 is a schematic view showing the structure of a cylinder according to a first embodiment of the present invention.

Figure 2 is a rear elevational view of Figure 1.

Fig. 3 is a perspective view of Fig. 1;

Fig. 4 is a schematic view showing the structure of the cylinder of the first embodiment of the present invention before the through-sink is processed.

Fig. 5 is a schematic cross-sectional view showing the head of the first embodiment of the present invention before installation.

Fig. 6 is a schematic view showing the structure of a fifth embodiment of the present invention.

Figure 7 is a plan view of Figure 6.

Figure 8 is a schematic exploded view of Embodiment 5 of the present invention.

Fig. 9 is a schematic structural view of a cylinder according to a fifth embodiment of the present invention.

Figure 10 is a plan view of Figure 9.

Figure 11 is a schematic view showing the structure of a blank of a cylinder of Example 5 of the present invention.

Figure 12 is a schematic view showing the structure of Embodiment 6 of the present invention.

Figure 13 is a plan view of Figure 12 .

Figure 14 is a schematic exploded view of Embodiment 6 of the present invention.

Figure 15 is a schematic view showing the structure of a cylinder of Embodiment 6 of the present invention.

Figure 16 is a plan view of Figure 15.

Figure 17 is a schematic view showing the structure of a blank of a cylinder of Example 6 of the present invention.

detailed description

(Example 1)

1 to 3, the water-cooled casing of the servo motor of the present embodiment includes a cylinder 1 and a head 2.

Both the barrel 1 and the head 2 are made of a deformed aluminum alloy. A plurality of water-passing holes 13 are arranged between the inner and outer walls of the tubular body 1 and extending through the circumferential end faces of the tubular body 1 , and a plurality of water-passing holes 14 are defined in the end faces of the tubular body 1 . All of the water passage holes 13 and the water passage 14 are connected to form a single water flow passage. The notch of the through water tank 14 is sealed by the sealing head 2.

The number of the water-passing holes 13 of the tubular body 1 is a double number: the two end portions of each of the water-passing holes 13 are respectively communicated on the two sides of the water-passing hole 13 through a through-water tank 14 disposed on the end surface of the cylindrical body 1 and The ends of the two water-passing holes 13 adjacent thereto, wherein the ends of the two water-passing holes 13 in the same water-passing tank 14 are respectively used for water inlet and outlet, and the slots of the remaining water-passing tanks 14 pass through the header 2 Sealed to form a single water flow path between the incoming and outgoing water.

The number of the heads 2 is the same as the number of the through water tanks 14, and corresponds one-to-one. A limiting step 16 is defined at the notch of the through-water tank 14 of the cylinder 1, and the sealing head 2 is sealed and fixed on the limiting step 16.

The manufacturing process of the water-cooled casing of the servo motor of the embodiment includes the following steps:

1. A long tube having a plurality of water-passing holes 13 distributed in the circumferential direction and extending through the end faces of both ends is extruded by profile extrusion.

2. According to the size requirement of the casing, the long pipe is cut into a suitable length 1 of the casing, as shown in FIG.

3. The water tank 14 is machined on both end faces of the cylinder 1, so that all the water holes 13 and the water tank 14 are connected to form a single water flow passage.

4. Make the head 2. The number of the heads 2 is the same as the number of the through water tanks 14, and corresponds one-to-one. A limiting step 16 is defined at the notch of the through-water tank 14 of the cylinder 1, and the sealing head 2 is sealed and fixed on the limiting step 16.

5. Install the head 2 as shown in Figure 5.

(Example 2)

This embodiment is basically the same as Embodiment 1, except that the number of the water-passing holes 13 of the cylindrical body 1 is singular: two ends of a pair of adjacent water-passing holes 13 not at the same end are respectively used for Water and effluent, the ends of each of the remaining water-passing holes 13 are respectively connected to the two water-passing holes 13 on both sides of the tubular body 1 through a through-water tank 14 disposed on the end surface of the cylindrical body 1, respectively. The notch of the water tank 14 is sealed by the head 2 to form a single water flow path between the inlet and the outlet.

(Example 3)

This embodiment is basically the same as Embodiment 1, except that the inner wall of the water-passing hole 13 of the cylinder 1 is provided with internal teeth. The internal teeth have a straight strip shape distributed in the circumferential direction of the cylindrical body 1, or an annular shape distributed in the axial direction of the cylindrical body 1, or a spiral shape extending in the axial direction of the cylindrical body 1.

(Example 4)

This embodiment is basically the same as Embodiment 1, except that the head 2 is provided with two pieces, and the shape of the head 2 is identical to the shape of the end face of the barrel 1. The two sealing heads 2 are respectively fixedly fixed on both end faces of the cylinder body 1. One of the sealing heads 2 is provided with a large through hole or a notch capable of passing through the inlet pipe and the outlet pipe at the same time, or one of the sealing heads 2 is provided Two small through holes or notches that can pass through the inlet and outlet pipes, respectively, or two small through holes or notches that can pass through the inlet or outlet pipe, respectively.

(Example 5)

6 to 10, the water-cooled casing of the servo motor of the present embodiment includes a cylinder 1, a head 2 and a pipe joint 3.

The cylinder 1 is made of a deformed aluminum alloy. The head 2 is an aluminum alloy or a rubber piece. A water inlet hole 11, a water outlet hole 12 and a plurality of water holes 13 are provided between the inner and outer walls of the cylinder 1. The water inlet hole 11 is disposed adjacent to the water outlet hole 12. Both the inlet of the water inlet hole 11 and the outlet of the water outlet hole 12 are provided on the outer peripheral surface of the cylindrical body 1. Both the outlet of the water inlet hole 11 and the inlet of the water outlet hole 12 are provided on the end surface of the cylindrical body 1. The water passing hole 13 is distributed along the circumferential direction of the cylinder 1 and penetrates the two of the cylinder 1 End face. A plurality of through water tanks 14 are provided on both end faces of the cylindrical body 1. The water inlet hole 11, the water outlet hole 12, and all the water passing holes 13 are connected by a water passage 14 to form a single liquid passage. The number of the water passing holes 13 is a double number, and the inlet of the water inlet hole 11 and the outlet of the water outlet hole 12 are close to the same end of the cylindrical body 1. A through-hole 15 is provided at a position on the cylinder 1 away from the liquid passage. A limiting step 16 is defined at the slot of the through water tank 14, and each of the limiting steps 16 is sealed and fixed with a sealing head 2. The pipe joint 3 is sealed and fixed in the inlet of the water inlet hole 11 of the cylinder 1 and the outlet of the water outlet hole 12.

1. A long tube having a plurality of water-passing holes 13 distributed in the circumferential direction and extending through the end faces of both ends is extruded by profile extrusion;

3. The water inlet hole 11 and the water outlet hole 12 are machined in the cylinder 1, and the inlet of the water inlet hole 11 and the outlet of the water outlet hole 12 are both disposed on the outer circumferential surface of the cylinder body 1, the outlet of the water inlet hole 11 and the water outlet hole 12 The inlets are all disposed on the end faces of the cylindrical body 1; then the water-passing tanks 14 are formed on both end faces of the cylindrical body 1, so that the water inlet holes 11, the water outlet holes 12, and all the water-passing holes 13 are connected through the water-passing tank 14 to form a single unit. Liquid passage

4. Install a pipe joint 3 in the inlet of the water inlet hole 11 of the cylinder 1 and the outlet of the water outlet hole 12;

5. Make and install the head 2.

In use, the cooling water pipe or the heat transfer oil pipe is connected to the pipe joint 3 on the water inlet hole 11 and the water outlet hole 12, and the heat of the motor is passed through the liquid passage through the water passage or the heat conduction oil to cool the motor.

(Example 6)

12 to 17, the embodiment is basically the same as the embodiment 5, except that the number of the water passing holes 13 of the cylinder 1 is singular: the inlet of the water inlet hole 11 and the outlet of the water outlet hole 12 are respectively close to the cylinder Both ends of the body 1.

(Example 7)

This embodiment is basically the same as the embodiment 5 except that the inner wall of the water-passing hole 13 of the cylinder 1 is provided with internal teeth. The internal teeth have a straight strip shape distributed in the circumferential direction of the cylindrical body 1, or an annular shape distributed in the axial direction of the cylindrical body 1, or a spiral shape extending in the axial direction of the cylindrical body 1.

(Example 8)

This embodiment is basically the same as Embodiment 5 except that the head 2 is provided with two pieces, and the shape of the head 2 is identical to the shape of the end face of the barrel 1. The two heads 2 are respectively sealed and fixed on both end faces of the cylinder 1.

The specific embodiments described above further detail the object, technical solution and beneficial effects of the present invention. It should be understood that the foregoing is only illustrative of specific embodiments of the invention, and is not intended to limit the invention, any modifications, equivalents, improvements, etc. within the spirit and scope of the invention All should be included in the scope of protection of the present invention.

Claims

A water-cooling casing for a servo motor, comprising: a cylinder body (1) and a head (2); a plurality of circumferential and outer walls of the cylinder body (1) are provided along a circumferential direction of the cylinder body (1) a water-passing hole (13) which is distributed and penetrates the end faces of both ends of the cylinder body (1), and a plurality of water-passing holes (14) are provided on both end faces of the cylinder body (1), all the water-passing holes (13) and the water-passing water tank (14) The connection is made into a single water flow passage; the notch of the through water tank (14) is sealed by the sealing head (2).
The water-cooling casing of a servo motor according to claim 1, wherein the number of the sealing heads (2) is identical to the number of the water-passing tanks (14), and the one-to-one correspondence; the cylinder body (1) There is a limit step (16) at the slot of the through water tank (14), and the head (2) is sealed and fixed on the limit step (16).
A water-cooling casing for a servo motor according to claim 1, wherein said head (2) is provided with two pieces, and the shape of the head (2) and the shape of the end surface of the barrel (1) Consistently; the two heads (2) are respectively sealed and fixed on both end faces of the cylinder body (1), and one of the heads (2) is provided with a large through hole or a gap which can simultaneously pass through the inlet pipe and the outlet pipe. , or one of the heads (2) is provided with two small through holes or notches which can respectively pass through the inlet pipe and the outlet pipe, or two of the two heads (2) are respectively capable of passing through the inlet pipe or the outlet Small through holes or gaps in the water pipes.
A water-cooling casing for a servo motor according to claim 1, characterized in that the inner wall of the water-passing hole (13) of the cylinder (1) is provided with internal teeth.
A water-cooling casing for a servo motor according to claim 4, characterized in that the inner teeth of the inner wall of the water-passing hole (13) of the cylinder (1) are distributed along the circumferential direction of the cylinder (1) The straight strip shape is either an annular shape distributed along the axial direction of the cylinder (1) or a spiral extending in the axial direction of the cylinder (1).
A water-cooled casing for a servo motor, comprising: a cylinder body (1) and a head (2); a water inlet hole (11) and a water outlet between the inner and outer walls of the cylinder body (1) a hole (12) and a plurality of water holes (13); the water inlet hole (11) is disposed adjacent to the water outlet hole (12); the inlet of the water inlet hole (11) and the outlet of the water outlet hole (12) Both are disposed on an outer circumferential surface of the cylinder (1); an inlet of the water inlet hole (11) and an inlet of the water outlet hole (12) are disposed on an end surface of the cylinder body (1); the water passage hole (13) ) is distributed along the circumferential direction of the cylinder (1) and penetrates both end faces of the cylinder body (1); the end faces of the cylinder body (1) are provided with a plurality of water passages (14); the water inlet holes (11), the water outlet hole (12), and all the water passing holes (13) are connected to form a single liquid passage through the water tank (14); the notch of the water tank (14) is sealed by the sealing head (2).
A water-cooling casing for a servo motor according to claim 6, wherein when the number of the water passage holes (13) of the cylinder body (1) is a double number, the inlet of the water inlet hole (11) and The outlet of the water outlet hole (12) is close to the same end of the cylinder body (1); when the number of water outlet holes (13) of the cylinder body (1) is singular, the inlet and outlet holes of the water inlet hole (11) (12) The outlets are respectively near the ends of the cylinder (1).
A water-cooling casing for a servo motor according to claim 6, characterized in that the tubular body (1) is provided with a through-line through hole (15) at a position avoiding the liquid passage.
A water-cooling casing for a servo motor according to claim 6, wherein a limit step (16) is provided at a notch of the through-water tank (14) of the cylinder body (1), each limit step (16) Sealing and fixing one head (2).
A water-cooling casing for a servo motor according to claim 6, wherein said head (2) is provided with two pieces, and the shape of the head (2) and the shape of the end surface of the barrel (1) Consistently; the two heads (2) are respectively sealed and fixed on both end faces of the cylinder (1).
A water-cooling casing for a servo motor according to claim 6, characterized in that the inner wall of the water-passing hole (13) of the cylinder (1) is provided with internal teeth.
A water-cooling casing for a servo motor according to claim 11, wherein the inner teeth of the inner wall of the water passage hole (13) of the cylinder body (1) are distributed along the circumferential direction of the cylinder body (1). The straight strip shape is either an annular shape distributed along the axial direction of the cylinder (1) or a spiral extending in the axial direction of the cylinder (1).
A water-cooled casing for a servo motor according to claim 6, wherein said cylinder (1) is made of a deformed aluminum alloy.
A water-cooled casing for a servo motor according to claim 6, wherein said head (2) is an aluminum alloy or a rubber-plastic member.
A water-cooling casing for a servo motor according to claim 6, wherein a tube is sealed and fixed in an inlet of the water inlet hole (11) of the cylinder body (1) and an outlet of the water outlet hole (12). Road connector (3).
A manufacturing process of a water-cooled casing of a servo motor, comprising: the following steps:

1. A long tube having a plurality of water-passing holes (13) distributed in the circumferential direction and extending through the end faces of both ends is extruded by profile extrusion;

2. According to the size requirements of the casing, the long pipe is cut into a suitable length (1).

3. The water-passing trough (14) is machined on both end faces of the cylinder (1) to connect all the water-passing holes (13) and the water-passing trough (14) into a single water flow passage;

4. Make a head (2);

5. Install the head (2).
A manufacturing process of a water-cooled casing for a servo motor according to claim 16, wherein the cylinder (1) and the head (2) are both made of a deformed aluminum alloy.
The manufacturing process of a water-cooled casing of a servo motor according to claim 16, characterized in that the number of the heads (2) produced in the step 4 is identical to the number of the water-passing tanks (14), and one-to-one correspondence a limiting step (16) is provided at the notch of the through water tank (14) of the cylinder body (1), and the sealing head (2) is sealed and fixed on the limiting step (16) Upper.
A manufacturing process for a water-cooled casing of a servo motor according to claim 16, wherein said step 4 produces two heads (2), and the shape of the head (2) and the cylinder (1) The shape of the end faces is uniform; one of the heads (2) is provided with a large through hole or a notch which can pass through the inlet pipe and the outlet pipe at the same time, or one of the heads (2) is provided with two can pass through a small through hole or a notch of the water pipe and the outlet pipe, or a small through hole or a notch which can pass through the inlet pipe or the outlet pipe respectively on the two heads (2); the two heads (2) are respectively sealed It is fixed to both end faces of the cylinder (1).
The manufacturing process of a water-cooled casing of a servo motor according to claim 16, characterized in that, in the step 5, when the number of the water-passing holes (13) of the cylinder (1) is a double number: each Both ends of the water-passing hole (13) are respectively connected to two sides of the water-passing hole (13) and adjacent to each other through a through-water tank (14) provided on the end surface of the cylindrical body (1). The end of the water hole (13), wherein the ends of the two water-passing holes (13) in the same water-passing tank (14) are respectively used for water inlet and outlet, and the slots of the remaining water-passing tanks (14) pass through the head ( 2) Sealing to form a single water flow channel between the influent and the effluent;

When the number of the water-passing holes (13) of the cylinder (1) is singular: two ends of the pair of adjacent water-passing holes (13) not at the same end are used for water inflow and water, respectively, and each of the remaining Both ends of the water-passing hole (13) are respectively connected to two water-passing holes (13) on both sides of the cylindrical body (1) through a water-passing tank (14) disposed on the end faces of the cylindrical body (1). The notch of the through-water tank (14) is sealed by the head (2) to form a single water flow passage between the inlet and the outlet.
A manufacturing process of a water-cooled casing of a servo motor, comprising: the following steps:

1. A long tube having a plurality of water-passing holes (13) distributed in the circumferential direction and extending through the end faces of both ends is extruded by profile extrusion;

2. According to the size requirements of the casing, the long pipe is cut into a suitable length (1).

3. The inlet hole (11) and the outlet hole (12) are machined in the cylinder (1), and the inlet of the inlet hole (11) and the outlet of the outlet hole (12) are disposed on the outer circumference of the cylinder (1). Upper, the inlet of the water inlet hole (11) and the inlet of the water outlet hole (12) are all disposed on the end surface of the cylinder body (1); then the water tank (14) is machined on both end faces of the cylinder body (1) to advance The water hole (11), the water outlet hole (12), and all the water passing holes (13) are connected by a water tank (14) to form a single liquid passage;

4. Install a pipe joint (3) in the inlet of the water inlet hole (11) of the cylinder (1) and the outlet of the water outlet hole (12);

5. Make and install the head (2).
A manufacturing process of a water-cooled casing for a servo motor according to claim 21, comprising the steps of: said cylinder (1) being made of a deformed aluminum alloy; said head (2) being aluminum Alloy or rubber parts.
A manufacturing process for a water-cooled casing of a servo motor according to claim 21, wherein: A limiting step (16) is provided at the notch of the through water tank (14) of the cylinder body (1), and a sealing head (2) is fabricated and mounted on each limiting step (16).
A water-cooling casing for a servo motor according to claim 21, wherein said head (2) is made in two pieces, and the shape of the head (2) is identical to the shape of the end surface of the cylinder (1). The two heads (2) are respectively sealed and fixed on both end faces of the cylinder (1).